Yamato | VG3511-8F | Instruction manual | Yamato VG3511-8F Instruction manual

Instruction Manual
HIGH SPEED CYLINDER BED 3-NEEDLE
INTERLOCK STITCH MACHINE
VG3511-8F
Thank you for having purchased the Model VG3511-8F.
Before using your VG3511-8F, please read the instruction
manual and understand the contents well.
A f ter reading the instruction manual, please keep it in a location where it is easily accessible to the operator.
CONTENTS
S a f e t y i n s t r u c t i o n s ⅰ-ⅳ
1. Name of each part
1
2. Installation
2
2.1 2.1.1
2.1.2
2.2
2.3
2.4
2.5
2.6
2.7
T a b l e c u t t i n g d i a g r a m T a b l e t o p t y p e ( T y p e A : s t a n d a r d ) T a b l e t o p t y p e ( T y p e B ) T a b l e t o p t y p e M o t o r , b e l t a n d p u l l e y H a n g i n g b e l t B e l t c o v e r E y e g u a r d a n d f i n g e r g u a r d T h r e a d g u i d e p l a t e 2
2
3
4
5
6
6
7
7
2.8
A c c e s s o r i e s 8
3. Sewing speed and rotating direction of pulley
9
4. Lubrication
10
4.1
4.2
4.3
4.4
L u b r i c a t i n g o i l L u b r i c a t i n g C h a n g i n g o i l C h e c k i n g a n d r e p l a c i n g o i l f i l t e r 10
10
11
11
5. Proper operation
12
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
5.11
5.12
5.13
5.14
5.15
5.16
N e e d l e s y s t e m I n s t a l l i n g n e e d l e s T h r e a d i n g A d j u s t i n g t h r e a d t e n s i o n P r e s s u r e o f p r e s s e r f o o t A d j u s t i n g p o s i t i o n o f p r e s s e r f o o t A d j u s t i n g m o v e m e n t o f d i f f e r e n t i a l f e e d d o g A d j u s t i n g s t i t c h l e n g t h H e m m i n g g u i d e ( l e f t ) T r i m m i n g w i d t h o f f a b r i c H e m m i n g g u i d e ( r i g h t ) F a b r i c g u i d e ( r i g h t ) Raising upper feed roller (with puller mechanism)
Pressure of upper feed roller (with puller mechanism)
S P d e v i c e a n d H R d e v i c e C l e a n i n g t h e m a c h i n e 12
12
13
14
14
14
15
16
17
17
18
18
19
19
20
20
CONTENTS
6. Adjustments
6.1
6.2 6.3
6.4
6.4.1
6.4.2
6.4.3
6.5
6.6
6.7
6.8
6.9
6.10
6.11
6.12
6.13
6.14
6.15
6.16
N e e d l e t h r e a d t e n s i o n T o p c o v e r t h r e a d t e n s i o n L o o p e r t h r e a d t e n s i o n N e e d l e a n d s p r e a d e r S p r e a d e r T o p c o v e r t h r e a d g u i d e T o p c o v e r t h r e a d e y e l e t D i s t a n c e b e t w e e n n e e d l e a n d l o o p e r U s i n g t i m i n g g a u g e H e i g h t o f n e e d l e Needle and back-and-forth position of looper
N e e d l e a n d n e e d l e g u a r d ( r e a r ) N e e d l e a n d n e e d l e g u a r d ( f r o n t ) H e i g h t o f f e e d d o g C h a n g i n g r a n g e o f d i f f e r e n t i a l r a t i o P r e s s e r f o o t l i f t R e p l a c i n g f a b r i c p r e s s e r Feeding amount of puller (with puller mechanism)
Pressure of clutch tension spring (with puller mechanism)
7. Trimming mechanism
7.1
7.2
7.3
7.4
7.5
7.6
7.7
21
21
23
23
24
24
25
25
26
26
27
27
28
29
29
30
31
32
33
33
34
A d j u s t i n g t r i m m i n g p o s i t i o n o f f a b r i c A d j u s t i n g s u c t i o n p i p e ( f r o n t ) A d j u s t i n g s u c t i o n p i p e c o v e r R e m o v i n g a n d r e s e t t i n g l o w e r k n i f e R e m o v i n g a n d r e s e t t i n g u p p e r k n i f e A d j u s t i n g u p p e r k n i f e s t r o k e S h a r p e n i n g k n i v e s 34
35
35
36
37
38
39
8. Specifications
40
Attention
◇This instruction manual is designed mainly
◇The numbers in lower left corners of figures
for technicians, but it is advisable that also
are
figure numbers. We use them in texts
operators read the instructions with
as needed for your reference.
mark to use the machine properly.
A ttention
The parts used for this product are subject to chang e without notice. If such a chang e is
made , any part of the contents and illustrations of this instruction manual may not con form to this product.
In preparing the instruction manual, we have made our best efforts for making it free of
any error or omission. If any error or omission should yet be found, it might not be recti fied immediately.
Safety instructions
1. To ensure safe use
2.Installation and preparation
Always observe the following instructions to ensure the safe use of the industrial sewing machines and devices.
2-1 Instruction and training
1-1 Application and purpose
The sewing machine is designed to improve productivity in the sewing industry and must not be
used for other applications and purposes. Do not
use this sewing machine until it can be confirmed
that safety measures for the drive units have
been taken.
1-2 Before use
Read all instruction manuals thoroughly before
starting the use of this machine and follow
them.
Also, read the instruction manual for the installed
drive unit.
1-3 Working
environment
DO NOT WORK IN THE FOLLOWING ENVIRONMENTS:
- Place where atmosphere temperature and humidity give a bad influence the performance of
sewing machines.
- Outdoors and place where the sewing machines
are exposed to sunlight directly.
- Atmosphere containing dust, corrosive gases or
flammable gases.
- Place where voltage fluctuation exceeds ± 10 %
of the rated voltage.
- Place where power capacity necessary for the
used motor specifications cannot be secured.
- Place where strong electric or magnetic fields
are generated such as near large-output high
frequency transmitters or high frequency welding machines.
Operators and workers, who supervise, repair or
maintain the machine head and machine unit, are
required to have the adequate knowledge and operation skills to do the job safely. In order to
establish such necessary conditions, it needs
for the employer to plan and enforce the safety
education and training to those workers.
2-2 Sewing table and motor
(1) Prepare a machine table that has enough
strength to withstand the weight of the sewing head and any reaction while operating.
(2) Maintain a comfortable working environment
with considering the lighting and the arrangement of sewing machine so that the operators can work smoothly.
(3) When installing the control box and the related parts on the sewing machine, take care
about the posture of the worker.
(4) Install the drive unit correctly according
to the instruction manual.
2-3 Wiring
(1) Never connect the plug for power supply until assembly is finished.
(2) Fix the connectors securely to the sewing
machine head, motor, and electric apparatus.
(3) Do not apply excessive force to the connection cords.
(4) Connect the cords away from the driving
parts.
(5) Place the ground wire securely to the designated position on the machine head.
2-4 Before operation
1-4 Unpacking and transportation
(1) Unpack from the top.
(2) Never hold the parts near the needle or
threading parts when removing the sewing machine head from the buffer of box.
(3) When carrying the sewing machine head, have
an assistant.
(4) Pay attention not to get excessive impact or
shock when moving the sewing machine head
with a pushcart.
(1) Take care not to attach lubricant, silicone
oil, and grease on the eyes or skin.
Keep them away from children.
(2) Be sure to fill or drop lubrication oil before operating the sewing machine.
Use the Yamato SF oil as specified.
(3) Never put your hand under the needle or near
the moving parts of the machine when turning
on power supply switch.
i
Safety instructions
(4) When operating a new sewing machine, make
sure the rotating direction of pulley agrees
with the rotating-direction mark.
2-5 During operation
(1) Be sure to operate the sewing machine with
the safeguards such as belt cover, finger
guard, and eye guard.
(2) Never place the finger, hair or objects under the needle or close to the moving parts
while operating the sewing machine.
(3) Be sure to turn off the power supply switch
when threading or replacing the needles.
(4) Never place your hands close to the knives
when operating the sewing machine with the
trimming devices.
(5) Be sure to turn off the power supply switch
when terminating the sewing work or leaving
the sewing machine.
(6) If the sewing machine malfunctions, abnormal
sound or smell something unusual while operating, be sure to turn off the power supply
switch.
2-6 Removal
(1) Turn off the power supply switch if removed
or replaced any parts or during adjustment
of sewing machine.
(2) Do not pull the cord when removing the plug.
Be sure to hold the plug itself.
(3) A high voltage is applied inside the control
box. Turn off the power supply switch and
wait more than 5 minutes before opening the
cover.
3.Maintenance, inspection, and repair
(1) Follow the instruction manuals for maintenance, inspection, and repair.
(2) Entrust the maintenance, inspection, and repair to specially trained personnel.
(3) Be sure to turn off the power supply switch
and make sure the sewing machine and motor
completely stop before the maintenance, inspection, and repair. (If using a clutch motor, take care that the motor keeps turning
for a while even after turning off the power
ii
supply switch.)
(4) Be sure to remove the gasket too, when the
cover removed at the maintenance, inspection, and repair. If not removed, may be
injured at the edge of gasket.
(5) Do not modify the sewing machine by the
customer's judgment.
(6) Be sure to use original replacement parts
for repairs or maintenance.
4.Caution signs and alert pictorial markings
This instruction manual contains the following
caution signs and alert pictorial markings to
prevent you from injuring yourself or the sewing machine from being damaged.
Please follow the instructions.
4-1 Meanings of caution signs
WARNING indicates potentially hazardous situations which, if not heeded, could result in
death or serious injury to you and others.
Caution indicates hazardous situations which,
if not heeded, may result in minor or moderate
injury to you and others, or may result in machine damage.
NOTE is used to emphasize essential information.
Safety instructions
4-2 Alert pictorial markings
This mark indicates the warning
which, if not heeded, could result in death or Serious injury.
This mark indicates the caution
for high temperature.
This mark indicates the warning
which, if not heeded, could result in death or Serious injury.
High-voltage applies in the
control box. This label indicates that electric shock may be
caused.
This mark indicates the caution
which, if not grounded, the machine or device could malfunction and could result in personal injury.
5.Warning labels on sewing machines
This label indicates
that removal of the
safeguards and works
except for sewing performance while the
power supply switch
is on are prohibited.
(For details, see the
next page.)
High-voltage applies
in the control box.
This label indicates
that electric shock
may be caused.
This label is affixed on the
safeguards. Considering the
operation, it is not affixed
on the finger guard and eye
guard. Be sure to operate
with the finger guard and eye
guard in position.
Stepping motor and solenoid
may overheat if used continuously. To prevent a burn,
take care not to touch.
If not connected earth line,
static electricity may be
generated and inflict injury
on person. In addition, the
malfunction of electric system may cause injury to person.
Check the rotating
direction of machine
pulley agrees with '
ROTATING-DIRECTION
SYMBOL'.
iii
Safety instructions
Rotating direction symbol
iv
1. Name of each part
Thread guide plate
Seal plug
(lubricating)
SP device
Handwheel
Needle thread eyelet
Oil sight window
Needle bar guard
Presser spring regulator
Thread
tension
spring cap
Adjusting screw
(differential feed)
Needle thread
take-up guard
Differential
feed graduations
Front cover
Finger guard
Oil sight gauge
Main feed bar
adjusting screw
Hemming guide(right)
Eye guard
Screw
(draining oil)
Slide cover
Suction pipe
Fig. 1-1
VG3511-8F
1
Fig. 2-1
VG3511-8F
2
operator
4- Φ 9 Φ 16 countersunk hole
depth 16
Refer to the instruction of the motor
for dimensions A, B, C, and D.
Section Y-Y
Section X-X
3- Φ 9.5
(installing hole for motor)
Ttable dimensions: 1200×595×50
center of pulley
2. Installation
2.1 Table cutting diagram
2.1.1 Table top type(Tyep A : standard)
Refer to the instruction of the motor
for dimensions A, B, C, and D.
Section X-X
operator
4- Φ 9 Φ 16countersunk
hole depth 16
3- Φ 9.5
(installing hole for motor)
Table dimensions: 1200×595×50
center of pulley
2. Installation
2.1.2 Table top type (Type B )
Fig. 2-2
3
VG3511-8F
2. Installation
2.2 Table top type
Install a machine correctly referring to Figs. 2-3 and 2-4.
sewing
machine
⑤
sewing
machine
⑤
①
①
⑤
②
⑤
②
⑤
②
③
④
②
③
machine table
Fig. 2-3
Fig. 2-4
VG3511-8F
4
④
machine
table
2. Installation
2.3 Motor, belt and pulley
See the instruction manual for the motor used and install
the motor properly.
64.5 ㎜
40°
Clutch motor:
To install the clutch motor, align the center of the machine
pulley with that of the motor pulley when the motor pulley
shifts to the left with toeing down the pedal.
5.5 ㎜
10 ㎜
M-type of V-belt
Fig. 2-5
Note: Table 1 shows the outside diameter of the motor
pulley, rpm of the machine, and size of the belt
when using the clutch motor of 3-phase, 2-pole,
400W(1/2HP).
The outside diameter on the table shows the nearest size to the calculated values based on the commercial available pulleys at intervals of 5 mm.
Use only those motor pulleys applicable to the machine. If
not applicable, the sewing machine will be over maximum
and it can cause the damage to the machine.
diameter
of pulley
(㎜)
Calculate the outside diameter of a motor pulley from the
formula as below.
Or see Table 2 to select a proper motor pulley.
Usual sewing speed
× 64.5 + 5 mm
Servomoter speed
Belt
Size of belt
50 Hz 60 Hz
Semi-
Fully-
submerged submerged
90
4600
M40
M33
95
4850
M40
M34
100
5100
M41
M34
5350
105
4550
M41
M34
110
4750
M41
M35
115
5000
M42
M35
120
5200
M42
M35
125
5400
M42
M36
Table 1
Sewing speed
Servomotor:
Outside diameter
=
of motor pulley
Sewing speed
of machine
(sti/min)
Outside
of machine
(sti/min)
Outside diameter
of motor pulley ( ㎜ )
rpm of servomotor
3000 rpm
3600 rpm
4200
95
80
4500
102
86
4700
106
89
5000
113
95
5500
117
98
5500
123
104
Table 2
Use a V-belt of M type.
For belt size, refer to Table 1.
VG3511-8F
5
2. Installation
2.4 Hanging belt
②
①
Before hanging belt, ALWAYS turn the power switch OFF
and check that the machine has already stopped.
10 - 20 ㎜
Use the M-type of V-belt.
(1) Hang the belt ① on the machine pulley ② , and then
on the motor pulley ③ while rotating the machine pulley.
(2) Adjust the belt tension so that the belt has a slack of
10 - 20 ㎜ when its center is pushed with 10 N.
(3) Lock the motor with the adjusting bar ④ .
③
④
Fig. 2-6
2.5 Belt cover
Be sure to install belt cover to prevent you from injuring
and a material from being caught by the belt.
⑤
(1) Install the belt cover ⑤ . (Fig. 2-7)
(2) Push the belt cover support ⑥ to the belt cover ⑤ to
install it.
(3) Fix the belt cover(lower) ⑦ on the machine table. (Fig.
2-9)
Fig. 2-7
see from back
side of machine
⑤
⑥
⑦
Fig. 2-9
Fig. 2-8
VG3511-8F
6
2. Installation
2.6 Eye guard and finger guard
To ensure safe use, always install the eye guard ① and the
finger guard ② on the prescribed position when operating.
①
②
Fig. 2-10
2.7 Thread guide plate
(1) Put the screws ③ into the hole
of the thread
guide plate ④ and push it to the left.
(2) Fix the thread guide plate ④ with the screws ③ .
③
④
Fig. 2-11
VG3511-8F
7
2. Installation
2.8 Accessories
Install the accessories as the suction pipe(rear), the suction pipe support, the flexible hose and the speed controller on the machine as follows:
(1) Install the speed controller ⑧ in the screw hole on the bottom of the lower knife holder.
(2) Insert the suction pipe(rear) ① into the hole of the bottom of the lower knife holder bracket ② and fix them
with the screw ③ .
(3) Remove the screws ④ at the rear of the machine frame.
(4) Install the suction pipe support ⑤ with the screws ④ at the place the screws ④ were located.
(5) Install the suction pipe(rear) ① on the suction pipe support ⑤ .
(6) Insert the flexible hose ⑦ fitted with the hose band ⑥ into the suction pipe(rear) ① . Then, fix them with
the hose band ⑥.
⑦
④
⑤
⑥
③
①
⑧
②
Fig. 2-12
A
NOTICE
If tightened the screw ③ excessively, the suction pipe(rear) ① may be deformed. That may be difficult to remove
it when clogged with chips.
VG3511-8F
8
3. Sewing speed and rotating direction of pulley
The maximum sewing speed is 5500 sti/min and usually
sewing speed is 5000 sti/min (during intermittent
operation).
Run a new machine at speed about 15 - 20% lower than
maximum speed during the first 200 hours (for about one
month) so that a machine can offer a long service life in
good condition.
The rotating directions of the machine pulley ① and the
handwheel ② are clockwise as shown in the figure.
②
①
Fig. 3-1
If rotated in reverse direction, oil cannot be supplied
properly. It can cause the damage to the machine.
VG3511-8F
9
4. Lubrication
Before lubricating, ALWAYS turn the power switch OFF and check that the machine has already stopped.
4.1 Lubricating oil
Use YAMATO SF OIL No. 28.
①
Never add additives to the oil.
If added, it can cause the deterioration of the oil and the
damage to the machine.
Fig. 4-1
4.2 Lubricating
When using a new machine, or a machine which has not
been run for a while, supply a few drops of oil to the needle
bar ① and the looper bar ② .
②
Remove the seal plug ③ indicated “OIL” and supply oil to
the upper line of the oil sight gauge ④ .
Check that oil splashes from the nozzle inside the oil sight
window ⑤ while running a machine.
If oil does not splash from the nozzle, see “4.4 Checking
and replacing oil filter” on page 11.
1. Too much oil or insufficient oil can cause oil leakage
and machine trouble. Be sure to keep the oil level between the lines. Also too much lubrication can cause
the oil scatter and material stain.
2. Supply with a few amount of oil into the hole ⑥ periodically.
Fig. 4-2
⑤
③
Fig. 4-3
⑥
④
Fig. 4-4
Fig. 4-5
VG3511-8F
10
4. Lubrication
Before lubricating, ALWAYS turn the power switch OFF and check that the machine has already stopped.
4.3 Changing oil
Period of changing:
When using a new machine, change the lubricating oil after
running a machine for 200 hours (for about one month).
After that, change the oil once or twice a year.
①
Procedure for changing:
(1)
(2)
(3)
(4)
(5)
Remove the belt cover. (See page 6.)
Remove V-belt from the motor pulley. (See page 6.)
Remove the machine from the machine table.
Set a container received the oil under the screw ① .
After removing screw ① , oil is drained.
Fig. 4-6
ATTENTION
Be careful not to soil the V-belt and the machine pulley
with the oil.
(6)
(7)
(8)
(9)
Reset the screw ① .
Change the oil. (See “4.2 lubricating” on page 10.)
Reset the machine on the machine table.
Hang V-belt on the motor pulley and reset the belt
cover. (See page 6)
4.4 Checking and replacing oil filter
◆ If the oil filter ② is clogged with dust, lubrication cannot be done properly.
◆ Remove the oil filter cap ③ and the oil filter ② to
check them every six months. If clogged or cracked,
clean or replace the oil filter.
◆ If oil is splashed from the nozzle insufficiently or includes many bubbles though the oil is sufficiently kept,
check or replace the oil filter.
④
②
NOTICE
Carefully check and replace them without spilling oil
stagnant in the oil filter ② when loosening screw ④ .
③
Fig. 4-7
VG3511-8F
11
5. Proper operation
5.1 Needle system
Use UY × 128GAS (UY128GAS).
Select a proper needle in size depending on the thickness
and type of fabric.
Japanese
standard
Metric
standard
9
10
11
12
13
14
65
70
75
80
85
90
Table 3
5.2 Installing needles
Before installing, ALWAYS turn the power switch OFF
and check that the machine has already stopped.
(1) Loosen the screws ① with a screwdriver. (Fig. 5-1)
(2) Remove an old needle with a pair of tweezers.
(3) Insert a new needle into the needle clamp ② as far as it
will go with facing its scarf to the right back. (Figs. 5-2
and 5-3)
(4) Tighten the screws ① with a screwdriver.
②
①
ATTENTION
Tighten the screws ① with a tightening torque of
0.6N・m.
Fig. 5-1
NO
OK!
NO
OK!
Fig. 5-2
Fig. 5-3
VG3511-8F
12
NO
5. Proper operation
5.3 Threading
When threaded, rethread by tying new threads with the preset threads.
When not threaded, thread correctly as shown in Fig. 5-4.
A: Needle thread
Pull out the threads until they come to the front of the needles. Then, cut off the knots before passing them
through the needle eyes.
Thread correctly for the left needle which is in the inmost position as shown in the figure.
B: Looper thread
B C
Pull the thread until the knot comes out. Then, cut off the knot.
A A A
C: Spreader thread
Pull the thread until the knot comes out.
with UT or UT-A
device
④
⑤
Fig. 5-4
①
②
Never thread through
top cover tension disc
D
③
E
☆ Looper thread
Pull the thread until the knot is out. Then, cut off the knot.
Note: Threading for sewing with UT or UT-A device
* For standard type of thread, thread through the looper
thread eyelet(left) ④ via the looper thread release ③ .
(Thread D)
* For stretchless thread, thread directly to the looper ⑤
through the looper thread release ③ . (Thread E)
☆ for stretch able thread
Note: For easy threading, pull the lever ②
of the thread take-up eyelet holder
①.
After threading, push the lever ②
to reset the thread take-up eyelet
holder ① to the original position.
VG3511-8F
13
5. Proper operation
5.4 Adjusting thread tension
Adjust the thread tension with the thread tension spring
caps ① depending on fabric type, thread type, seam width,
stitch length, and other sewing conditions.
● To tighten the thread tension, turn the caps clockwise.
● To loosen the thread tension, turn the caps counterclockwise.
①
loosen
tighten
Fig. 5-5
5.5 Pressure of presser foot
Loosen the lock nut ② and turn the adjusting screw ③ to
adjust the pressure.
decrease
increase
③
②
● To increase the pressure, turn it clockwise.
● To decrease the pressure, turn it counterclockwise.
Keep the pressure to a minimum for stable sewing performance.
Fig. 5-6
5.6 Adjusting position of presser foot
Before adjusting, ALWAYS turn the power switch OFF
and check that the machine has already stopped.
④
Adjust right-and-left position of the needle holes of the
presser foot.
Loosen the screw ④ . Move the front of the presser foot
right or t so that the needle drops in the center of the
needle drop.
Then, tighten the screw ④ securely.
needles
Fig. 5-7
VG3511-8F
14
5. Proper operation
Before operating, ALWAYS turn the power switch OFF and check that the machine has already stopped.
5.7 Adjusting movement of differential feed dog
The differential ratio has been set from 1:0.7 to 1:1.4 at
shipment.
When aligned the differential feed lever(right) ① with the
line ② of the differential feed graduations, the movement
of the differential feed dog is the same as that of the main
feed dog (differential ratio 1:1), resulting in uniform sewing.
gathering
④
stretching
③
(1) Loosen the lock nut ③ .
(2) Turn the adjusting screw ④ to adjust the movement of
the differential feed dog.
● To increase the movement for gathering, turn it clockwise.
● To decrease the movement for stretching, turn it counterclockwise.
①
Fig. 5-8
(3) Tighten the lock nut ③ securely.
gathering 【1:1.4】
② 1:1
uniform sewing
1:0.7 stretching
①
Fig. 5-9
VG3511-8F
15
5. Proper operation
5.8 Adjusting stitch length
Stitch length is adjustable from 1.4 to 3.6 ㎜ . Table 4
shows the number of stitches per inch (25.4 ㎜ ) and 30 ㎜
converted to the stitch length.
The main feed lever stopper ⑤ has been adjusted so as to
stop at 3.6 ㎜ at the maximum with the screw ⑥ at shipment.
Stitch length
Number ou stitch Number of stitch
(㎜)
(per 1 inch)
(per 30 ㎜ )
1.4
18
21
2.0
13
15
3.0
8.5
3.6
7
10
8
Table 4
Adjusting procedure:
(1) Loosen the lock nut ① .
(2) Align the end of the main feed lever ④ with the required position on the main feed graduations ③ . Turn
the main feed bar adjusting screw ② to adjust it.
● To make the stitch length smaller, turn it clockwise.
● To make the stitch length larger, turn it counterclockwise.
①
③
②
④
⑥
Fig. 5-10
stitch length
1.4 ㎜
2.0 ㎜
④
8.5 stitches
3.6 ㎜
7 stitches
Fig. 5-11
16
stitch
(per 1 inch)
18 stitches
13 stitches
3.0 ㎜
⑥
VG3511-8F
③ number of
⑤
5. Proper operation
5.9 Hemming guide(left)
(1) Loosen the screw ② of the hemming guide(left) ① .
(2) Align the right on the guiding part of the hemming
guide(left) ① with that of the upper knife ③ .
(3) Tighten the screw ② securely.
③
SUPPLEMENT
See“7.1 Adjusting trimming position of fabric ”to adjust the right-and-left position of lower fabric.
aligned
①
②
Fig. 5-12
5.10 Trimming width of fabric
Install or remove the folder spacer ⑤ on the guiding part
of the hemming guide(left) ① to change the trimming width
of a fabric.
⑤
④
When sewing with the folder spacer ⑤ , the trimming width
is 3.0 ㎜ .
When sewing without it, the trimming width is 5.0 ㎜ .
Remove the screw ④ to remove the folder spacer ⑤ .
①
Fig. 5-13
VG3511-8F
17
5. Proper operation
5.11 Hemming guide(right)
(1) Loosen the screws ② of the hemming guide(right) ① .
(2) Align the right end of the hemming guide(right) ① with
that of folded fabric set for hem width.
(3) Tighten the screws ② securely.
①
②
Fig. 5-14
5.12 Fabric guide(right)
(1) Loosen the screws ④ of the fabric guide(right) ③ .
(2) Align the left end of the fabric guide(right) ③ with the
guiding part of the hemming guide(right) ① .
(3) Tighten the screws ④ securely.
③
①
Fig. 5-15
VG3511-8F
18
④
5. Proper operation
Before operating, ALWAYS turn the power switch OFF and check that the machine has already stopped.
5.13 Raising upper feed roller (with puller mechanism)
Move the upper feed roller lifting lever ② up or down to
raise the upper feed roller ① when pulling out a fabric due
to fabric jam.
Raising the upper feed roller lifting lever ② keeps raising
the upper feed roller ① .
②
①
Fig. 5-16
5.14 Pressure of upper feed roller (with puller mechanism)
Adjust the pressure of the upper feed roller as low as possible to feed a fabric while putting between the upper and
lower feed rollers.
Turn the adjusting screw ③ to adjust it.
decrease
increase
③
● To increase the pressure, turn it clockwise.
● To decrease the pressure, turn it counterclockwise.
Fig. 5-17
VG3511-8F
19
5. Proper operation
Before operating, ALWAYS turn the power switch OFF and check that the machine has already stopped.
5.15 SP device and HR device
①
Use SP device (needle thread oiling) equipped as standard
to prevent thread breakage and skip stitch when running
a machine at high speed or using synthetic thread and/or
synthetic fabric.
Also use HR device (needle point cooling) as an extra.
Use dimethyl silicon oil.
Open the lid ① of SP container and the lid ② of HR container to check the oil level.
Fig. 5-18
1. When not using SP device and HR device, remove the
felts. If not removed, it may occur irregular condition
during sewing.
2. If silicone oil is attached to the parts other than SP
and HR devices, it can cause the machine trouble. Be
sure to wipe it away.
②
Fig. 5-19
5.16 Cleaning the machine
③
Clean waste thread and dust inside the machine at the end
of work a day.
Remove the seal plug ③ at the back of the machine and
clean the grooves in the stitch plate, feed dog area, and oil
filter screen area once a week.
NOTICE
If the oil filter screen is clogged with dust, oil in the cylinder does not return to the oil reservoir. It can cause oil
leakage.
VG3511-8F
20
Fig. 5-20
6. Adjustments
Before operating, ALWAYS turn the power switch OFF and check that the machine has already stopped.
6.1 Needle thread tension
34.5 ㎜
Needle thread take-up
a
Procedure:
(1) Loosen the screws ② and ③ .
● To tighten the needle thread, move the needle
thread take-up ① in the direction T.
● To loosen the needle thread, move the needle
thread take-up ① in the direction L.
(2) Tighten the screws ② and ③ securely.
As standard, set the part “a” horizontally, and make the
distance between the screw ② the needle thread takeup ① tip to 34.5 ㎜ when the needle bar is at the highest
point.
①
L
T
②
③
Fig. 6-1
Needle thread eyelet
If the above mentioned adjustments are not enough or
want to make adjustment for each needle thread, perform
the following steps.
Procedure:
(1) Loosen the screws ⑤ .
● To tighten the needle thread, move each eyelet ④
in the direction T.
● To loosen the needle thread, move each eleyet ④
in the direction L.
(2) Tighten the screws ⑤ securely.
As standard, make the distance between the needle thread
eyelet holder ⑥ and each eye of the needle thread eyelet
④ as below.
Left needle: 25 ㎜
Middle needle: 17.5 ㎜
Right needle: 10 ㎜
T
10 ㎜
17.5 ㎜
25 ㎜
L
⑥
⑤
④
Fig. 6-2
T
⑦
L
Adjusting all eyelets together:
(1) Loosen the screw ⑦ of the SP device.
● To tighten the needle thread, move the SP device
⑧ in the direction T.
● To loosen the needle thread, move the SP device
⑧ in the direction L.
(2) Tighten the screw ⑦ securely.
As standard, set the SP device at the highest point.
⑧
Fig. 6-3
VG3511-8F
21
6. Adjustments
Before adjustment, ALWAYS turn the motor switch OFF
and check that the motor has already stopped.
As the needle thread loop may difficult to be formed depending on the type of thread, the looper can not catch
the needle thread. This can cause skip stitch.
In this case, thread the needle thread through the needle
thread retainer disc ① and the needle thread retainer support which has been attached with the machine as accessories.
①
Fig. 6-4
Use the needle thread guide when the needle thread
forms loop unstably with stretchable thread like synthetic
thread.
As standard, align the center of the eye of the needle bar
thread eyelet ② with the top of the needle thread guide ③ ,
and make them parallel when the needle bar is at the lowest point.
Loosen the screw ④ to adjust the height and right-andleft position of the needle thread guide ③ .
③
④
②
Fig. 6-5
VG3511-8F
22
6. Adjustments
6.2 Top cover thread tension
Loosen the screws ② and move the top cover thread
eyelet(left) ① to adjust it.
a
①
T
● To decrease take-up amount, turn the eyelet(left) ① in
the direction T.
● To increase take-up amount, turn the eyelet(left) ① in
the direction L.
L
The part “a” on the top cover thread eyelet(left) ① is
horizontal as standard.
When using stretchable thread like stretchable thread, turn
the top cover thread eyelet(left) ① in the direction L.
②
for stretchable thread
Fig. 6-6
ADVICE
Thread stretchable thread through the lower eye.
6.3 Looper thread tension
Align center of the eyes of the thread take-up eyelets(left)
④ and (right) ⑤ 3.0 ㎜ under the lines ③ on the thread
take-up eyelet holder as standard.
Loosen the screws of both thread take-up eyelets to adjust
them.
④
⑤
③
● To tighten the looper thread tension, raise both eyelets.
● To loosen the looper thread tension, lower both eyelets.
3.0 ㎜
⑥
Fig. 6-7
ADVICE
When using stretchable thread, move the thread takeup eyelets ④ and ⑤ to the lowest points. Do not thread
through the top cover tension disc ⑥ .
VG3511-8F
23
6. Adjustments
6.4 Needle and spreader
6.4.1 Spreader
②
0.5 - 0.8 ㎜
(1) Loosen the screws ③ and ④ of the spreader holder.
(Fig. 6-10)
(2) Make the clearance between the left needle and the
hook ② of the spreader ① to 0.5 - 0.8 ㎜ . (Fig. 6-8)
(3) Make the clearance between the center of the left needle and the hook ② to 4.5 - 5.5 ㎜ when the spreader
① is at the extreme left. Then tighten the screw ④
securely. (Figs. 6-8 and 6-10)
(4) Make the height from the top of the stitch plate to the
bottom of the spreader ① to 8.5 - 9.5 ㎜ . Then tighten the screw ③ securely. (Figs. 6-9 and 6-10)
①
4.5 - 5.5 ㎜
Fig. 6-8
ATTENTION
①
Adjust the height of the spreader so that the top cover
thread passes behind the right needle and is caught by
the left needle within adjustable range based on the needle distance.
8.5 - 9.5 ㎜
stitch plate
Fig. 6-9
④
③
Fig. 6-10
VG3511-8F
24
6. Adjustments
6.4.2 Top cover thread guide
(1) Loosen the screws ② of the top cover thread guide ① .
(Fig. 6-11)
(2) Make the clearance between the top of the spreader ③
and the bottom of the top cover thread guide ① to 0.5
㎜ . (Fig. 6-11)
(3) Set the hook ④ in the center of the slot of the top
cover thread guide ① when the spreader ③ is at the
extreme right. Then, tighten the screws ② securely.
(Figs. 6-11 and 6-12)
①
②
⑤
1.0 ㎜
①
0.5 ㎜
⑤
③
③
Fig. 6-11
6.4.3 Top cover thread eyelet
(1) Loosen the screw ⑥ of the top cover thread eyelet ⑤ .
(Fig. 6-12)
(2) Make the clearance between the top of the top cover
thread guide ① and the top cover thread eyelet ⑤ to
1.0 ㎜ when the needle bar is at the lowest point. (Fig.
6-11)
(3) Set the eye of the top cover thread eyelet ⑤ along the
extending line from the slot of the top cover thread
guide ① . (Fig. 6-12)
(4) Tighten the screw ⑥ securely. (Fig. 6-12)
①
④
③
⑤
⑥
Fig. 6-12
VG3511-8F
25
6. Adjustments
6.5 Distance between needle and looper
The distance “L” between the looper tip and the center of
the right needle depends on the needle distance when the
needles are at the lowest points and the looper ① is at the
extreme right.
①
See Table 5 and loosen the screw ② of the looper holder
to adjust the distance.
②
SUPPLEMENT
The distance between the center of the needle bar and
the looper ① tip is 6.0 mm even if the needle distance
changes.
needle distance
(mark)
gauge mark
L
Fig. 6-13
looper's
distance "L"
3.2 ㎜ (32)
A
4.4 ㎜
4.0 〃 (40)
B
4.0 〃
4.8 〃 (48)
C
3.6 〃
5.6 〃 (56)
D
3.2 〃
6.4 〃 (64)
E
2.8 〃
Table 5
The timing gauge (No. 95220) makes it possible to adjust
the distance easily.
The gauge is an extra part. Place an order with our agents
or directly with us, if needed.
6.0 ㎜
Fig. 6-14
6.6 Using timing gauge
needles
C
D
A timing gauge has the marks (A, B, C, D, E) for each
needle distance.
Move the looper at the extreme right. Keep fitting the
right needle into the groove “V” corresponding needle
distance, and fit the looper tip to the gauge.
Then, tighten the screw ② securely.
Fig. 6-15
VG3511-8F
26
AE
B
①
6. Adjustments
6.7 Height of needle
(1) Install the needle to the left hole in the needle clamp.
(2) Check the looper is inserted into the looper holder
fully.
(3) Turn the handwheel until the looper tip meets the center of the left needle.
(4) Loosen the screw ① of the needle bar bracket and
move the needle bar up and down. Adjust the looper tip
to pass 0.8 - 1.3 ㎜ above the top of the needle eye.
(5) Tighten the screw ① securely. Check that the needle
drops in the center of the needle hole of the stitch
plate respectively.
0.8 1.3 ㎜
Fig. 6-16
①
Fig. 6-18
Fig. 6-17
6.8 Needle and back-and-forth position of looper
(1) Turn the handwheel until the looper tip ④ meets the
center of the left needle ⑤ .
(2) Loosen the screw ③ and move the looper holder back
or forth. Make the clearance between the back of the
left needle ⑤ and the looper tip to 0.2 - 0.3 ㎜ . Then,
tighten the screw ③ securely.
④
3-needle
0.2 0.3 ㎜
⑤
②
④
ATTENTION
When tightening the screw ③ , back-and-forth position
of the looper may be shifted. Recheck the position after
tightening it.
2-needle
0.2 0.3 ㎜
③
⑤
Fig. 6-19
VG3511-8F
27
6. Adjustments
6.9 Needle and needle guard(rear)
(1) Turn the handwheel clockwise to lower the needles at
the lowest points.
(2) Loosen the screw ① .
(3) Align the line ③ on the needle guard(rear) ② with the
centers of the needle eyes.
(4) Tighten the screw ① securely.
(5) Turn the handwheel until the looper tip meets the center of the right needle.
(6) Loosen the screws ① and ④ , and move the needle
guard(rear) ② back or forth. Make the clearance between the right needle and the looper tip to 0 - 0.05 ㎜ .
(7) Check the clearance between the left needle and the
needle guard(rear) ② is 0 - 0.05 ㎜ with keeping (6).
②
③
Fig. 6-20
(8) Tighten the screws ① and ④ securely.
①
④
Fig. 6-21
0 - 0.05 ㎜
0 - 0.05 ㎜
Fig. 6-22
VG3511-8F
28
6. Adjustments
6.10 Needle and needle guard(front)
(1) Turn the handwheel clockwise until the looper tip meets
the center of the left needle.
(2) Loosen the screw ① . Adjust the height from the needle point to the angular part of the needle guard(front)
② to 1.5 - 2.0 ㎜ .
(3) Tighten the screw ① securely.
(4) Loosen the screws ① and ③ . Adjust the clearance between the needle guard(front) ② and the left, or right
needles to 0 - 0.3 ㎜ respectively.
(5) Tighten the screws ① and ③ securely.
②
1.5 - 2.0 ㎜
Fig. 6-23
①
②
③
0 - 0.3 ㎜
Fig. 6-24
Fig. 6-25
6.11 Height of feed dog
Adjust the height from the top of the stitch plate to the
tops of the differential feed dog ④ and the main feed dog
⑤ to 1.0 - 1.2 ㎜ when the feed dogs are at the highest
points as standard. Also they are parallel to the top of the
stitch plate.
Loosen the screws ⑥ and ⑦ to adjust them.
stitch plate
⑤
④
1.0 - 1.2 ㎜
⑦
⑥
Fig. 6-26
VG3511-8F
29
6. Adjustments
6.12 Changing range of differential ratio
Differential ratio 1:1.1 - 1:2
(1) Remove the side cover ① (three pcs. of screws).
(2) Remove the screw ② of the differential feed bar connection ③ .
(3) Fix the differential feed bar connection ③ in the hole
④ with the screw ② .
NOTE
Max. stitch length of the main feed dog is 2.3 ㎜ in a differential ratio of 1:2, and 3.0 ㎜ in 1:1.5 respectively.
①
Fig. 6-27
1:2 gathering
1:1.5
1:1.1
Fig. 6-28
③
③
②
④
②
Fig. 6-29
VG3511-8F
30
6. Adjustments
6.13 Presser foot lift
The presser foot lift for the needle distance 5.6 ㎜ is as
follows:
- with spreader: 5.5 ㎜
- without spreader: 7.0 ㎜
②
(1) Loosen the lock nut ① .
(2) Push down the lifter lever ② to make the lift between
the top of the stitch plate and the bottom of the
presser foot to 5.5 ㎜ (7.0 ㎜ ).
(3) Apply the screw ③ to the lifter lever ② when the
presser foot is raised by 5.5 ㎜ (7.0 ㎜ ).
(4) Tighten the lock nut ① securely.
(5) Loosen the screws ⑤ of the collar ④ .
(6) Make the clearance between the presser bar bushing
⑥ and the collar ④ to 0.2 ㎜ when the presser foot is
raised by 5.5 ㎜ (7.0 ㎜ ).
(7) Tighten the screws ⑤ securely.
③
①
Fig. 6-30
③
②
①
Fig. 6-31
⑤
⑥
④
0.2 ㎜
spreader
stitch plate
5.5 ㎜
Fig. 6-32
VG3511-8F
31
6. Adjustments
6.14 Replacing fabric presser
The fabric presser ② for hem width 19.1 ㎜ (3/4 inches)
has been set on the right of the presser foot ① at shipment. Also packed for 25.4 ㎜ (one inch). Use the fabric
presser depending on hem width.
To remove the fabric presser ② , loosen the screw ③ of
the presser foot ① .
③
①
②
Fig. 6-33
VG3511-8F
32
6. Adjustments
6.15 Feeding amount of puller (with puller mechanism)
(1) Remove the top cover seal plug ① .
(2) Rotate the handwheel until the screw ② of the upper
feed roller regulator comes right above.
Loosen the screw ② with a hexagon socket screwdriver.
(3) Rotate the handwheel until the adjusting screw ③
comes right above. (Fig. 6-34)
(4) Turn the adjusting screw ③ to adjust the feeding
amount.
①
increase
decrease
③
● To decrease the amount, turn it clockwise.
● To increase the amount, turn it counterclockwise.
(5) Tighten the screw ② with a tightening torque of 2.5
N・m securely.
②
Fig. 6-34
To make fine adjustment, loosen the nut ⑥ of the upper
④
feed roller lever rod ⑤ for the upper feed roller lever ④ .
And move the nut ⑥ up or down to adjust it.
⑥
⑤
● To decrease the amount, move it up.
● To increase the amount, move it down.
ATTENTION
Before adjusting, supply oil into two holes on the upper
feed roller lever rod ⑤ .
Fig. 6-35
6.16 Pressure of clutch tension spring (with puller mechanism)
(1) Loosen two screws ⑧ to tighten the collar ⑦ slightly.
(2) Turn the adjusting screw ⑨ to adjust the pressure of
the clutch tension spring ⑩ .
● To increase the pressure for stretching, turn it
clockwise.
● To decrease the pressure for gathering, turn it
counterclockwise.
Keep the pressure as to turn the spring ⑩ manually.
(3) Tighten two screws ⑧ securely.
⑩
⑧
⑦
⑨
Fig. 6-36
VG3511-8F
33
7. Trimming mechanism
Before operating, ALWAYS turn the power switch OFF and check that the machine has already stopped.
7.1 Adjusting trimming position of fabric
Loosen the screw ① of the lower knife braket to move the
lower knife holder ② right and left.
④
③
Adjust it as follows:
(1) Loosen the screw ① .
(2) Move the lower knife holder ② at required position.
(3) Tighten the screw ① with a tightening torque of 1.5 2 N・m.
(4) Rotate the handwheel to check the sharpness of the
blades by setting a thread between the upper knife ③
and the lower knife ④ .
(5) Set the top of the lower knife ④ 7.0 ㎜ apart from the
upper knife ③ tip (at the base of the blade). Then,
tighten the screw ⑤ of the collar(left) ⑥ .
(6) Recheck the knifes cut properly.
①
Fig. 7-1
7.0 ㎜
③
ATTENTION
Refer to“7.2 Adjusting suction pipe(front)”and“7.3
Adjusting suction pipe cover”after changing trimming
position of a fabric.
stitch plate
Fig. 7-2
VG3511-8F
34
②⑤
④
7. Trimming mechanism
7.2 Adjusting suction pipe(front)
Set right-and-left position of the suction pipe(front) ②
about 5 ㎜ apart from the left side of the chip receiver ④ .
Loosen the screw ③ to adjust the position of the suction
pipe(front) ② or remove it.
5㎜
☆ Suction by compressed air:
Adjust the suction power with the speed controller ① .
Keep the pressure to a minimum for suctioning the
chips.
☆ Suction by vacuum system:
Connect the flexible hose to the vacuum dust collector
to adjust the suction power.
Keep the pressure to a minimum for suctioning the
chips.
④
②
③
①
Fig. 7-3
ADVICE
If tightened the screw ③ excessively, the suction pipe(front) ② may be deformed. That may
be difficult to adjust or remove it.
7.3 Adjusting suction pipe cover
Adjust the position of the suction pipe cover ⑤ after
changing the position of the suction pipe(front) ② .
(1) Loosen the screws ⑥ on the suction pipe cover ⑤ .
(2) Align the right side of the suction pipe cover ⑤ with
the inlet of the suction pipe(front) ② .
(3) Tighten the screw ⑥ securely.
⑤
⑥
Fig. 7-4
VG3511-8F
35
7. Trimming mechanism
7.4 Removing and resetting lower knife
Removing the lower knife:
(1) Loosen the screw ② of the collar(left) ① .
(2) Move the upper knife holder ④ to the left and make
the clearance between the upper knife ③ and the lower
knife ⑤ .
(3) Tighten the screw ② slightly.
(4) Loosen the screw ⑥ of the lower knife ⑤ and pull out
the lower knife ⑤ downward.
②
①
Resetting the lower knife:
(1) Make the lower knife ⑤ blade even with the top of the
stitch plate. Then, tighten the screw ⑥ securely.
(2) Loosen the screw ② . The upper knife ③ touches the
lower knife ⑤ with its spring.
(3) Rotate the handwheel manually to check the sharpness
of the blades by setting a thread between the upper
knife ③ and the lower knife ⑤ .
(4) Set the top of the lower knife ⑤ 7.0 ㎜ apart from the
upper knife ③ tip (at the base of the blade). Then,
tighten the screw ② securely.
(5) Recheck the knives cut properly.
Fig. 7-5
⑤
③
⑥
④
Fig. 7-6
7.0 ㎜
⑤
③
stitch plate
Fig. 7-7
VG3511-8F
36
7. Trimming mechanism
7.5 Removing and resetting upper knife
Removing the upper knife:
(1)
(2)
(3)
(4)
⑨
Loosen the screw ⑥ on the upper knife holder ④ .
Remove the upper knife holder ④ .
Remove the screw ⑦ on the upper knife ③ .
Remove the upper knife ③ .
④
②
①
Resetting the upper knife:
(1) Attach the upper knife ③ to the pin ⑧ in the upper
knife holder ④ and tighten the screw ⑦ securely.
(2) Set the left end of the chip receiver ⑨ fixed on the left
of the upper knife holder ④ 1.5 ㎜ apart from the left
end of the upper knife shaft ⑩ .
(3) Rotate the handwheel manually to lower the upper knife
③ at the lowest point. Move the upper knife holder ④
to place the upper knife tip 0.5 ㎜ above the top of the
lower knife. Then, tighten the screw ⑥ securely.
(4) Loosen the screw ② on the collar(left) ① . The upper
knife ③ touches the lower knife ⑤ with its spring.
(5) Rotate the handwheel manually to check the sharpness
of the blades by setting a thread between the upper
knife ③ and the lower knife ⑤ .
(6) Set the top of the lower knife ⑤ 7.0 ㎜ apart from the
upper knife ③ tip (at the base of the blade). Then,
tighten the screw ② securely. (See Fig. 7-7)
(7) Recheck the knives cut properly.
⑥
Fig. 7-8
③
⑦
⑧
④
⑥
Fig. 7-9
③
⑤
0.5 ㎜
⑨
stitch plate
⑩
1.5 ㎜
④
Fig. 7-11
Fig. 7-10
VG3511-8F
37
7. Trimming mechanism
7.6 Adjusting upper knife stroke
Adjust the stroke of the upper knife to 3.0 - 6.5 ㎜ . It has been adjusted 4.0 ㎜ at shipment. Adjust the stroke
as follows:
(1) Loosen the screws ① to remove the bracket cover ② and the bracket cover gasket ③ .
(2) Loosen the nut ⑤ on the upper knife adjusting lever pin ④ to adjust it.
● To make stroke smaller, move it in the direction Y.
● To make stroke larger, move it in the direction X.
(3) Tighten the nut ⑤ securely.
(4) Loosen the screw ⑦ on the upper knife holder ⑥ to tighten it slightly.
(5) Rotate the handwheel manually to lower the upper knife ⑩ at the lowest point. Move the upper knife holder
⑥ to place the upper knife tip 0.5 ㎜ above the top of the lower knife. Then, tighten the screw ⑦ securely.
(See Fig. 7-12)
(6) Loosen the screw ⑨ on the collar(left) ⑧ . The upper knife ⑩ touches to the lower knife ⑪ with its spring.
(7) Rotate the handwheel manually to check the sharpness of the blades by setting a thread between the upper
knife ⑩ and the lower knife ⑪ .
(8) Set the top of the lower knife ⑪ 7.0 ㎜ apart from the upper knife ⑩ tip (at the base of the blade). Then,
tighten the screw ⑨ securely. (See Fig. 7-12)
(9) Recheck the knives cut properly.
(10) Reset the bracket cover ② and the bracket cover gasket ③ with the screws ① .
⑩ ⑪
⑨⑧
④
③
②
⑥
⑦
Fig. 7-12
⑤
①
X
④
Y
⑤
Fig. 7-13
VG3511-8F
38
7. Trimming mechanism
7.7 Sharpening knives
If the knives cut badly, re-sharpen the lower knife ② .
Prepare the cold water and re-sharpen the lower knife with
keeping it cool.
Re-sharpen the correct angle as in the figure.
①
②
ADVICE
Normal grinder is not useful to sharpen the upper knife
① made of super hard alloy. Contact us directly or the
dealer for re-sharpening it.
Fig. 7-14
10°
45°
Fig. 7-15
VG3511-8F
39
8. Specifications
Model
VG3511-8F
Description
High speed cylinder bed 3-needle interlock stitch machine with left hand trimming mechanism
Dimensions
470 ㎜(L)× 220 ㎜(W)× 405 ㎜(H)
Circumference
of Cylinder
340 ㎜
Weight
41.5 kg
Stitch Type
ISO 406, 407, 602, 605
Application
Hemming operation of knitted fabric for lightweight material
Sewing Speed
Up to 5500 rpm (during intermittent operation)
1.4 - 3.6 ㎜
Stitch Length
Number of stitches
per inch(25.4 ㎜ ) 7 - 18 stitches
Needle System
UY × 128GAS #10 - #14 (standard: #10)
Needle Distance
3-needle: 4.8 ㎜ , 5.6 ㎜ , 6.4 ㎜
Needle Stroke
31 ㎜
Upper knife stroke
3.0 - 4.0 ㎜
Suctioning chips
Ventury or vacuum system
per 30 ㎜
Presser Foot Lift
Feed Regulation
Differential Ratio
8 - 21 stitches
For 5.6 ㎜ of needle distance
with spreader: 5.5 ㎜ , without spreader: 7.0 ㎜
By adjusting screw (available for micro adjustment)
Standard: 1 : 0.7 - 1 : 1.4
1 : 1.1 - 1 :2 (stitch length is 2.5 mm or less in max. normal differential)
Differential Feed
Micro adjustment by adjuster
Regulation
Adjustable by moving external lever even during operation
Lubrication
Lubrication automatically by trochoid-shaped pump
Lubricating Oil
YAMATO SF OIL No.28
Capacity of
Oil Reservoir
Installation
Compliance with
Regulator
Noise
declaration
800 ml
Table top type
CE Marking
LpA=83.6dB(5,500sti/min) according to ISO 10821-C6.2-ISO 11204 GR2
Table 6
VG3511-8F
40
4-4-12, NISHI T ENM A , K I T A - K U , O S A K A , J A P A N
T E L:81- 6 - 6 3 6 4 - 5 6 21 F A X:81- 6 - 6 3 6 5 - 718 5
〒530- 0047 大 阪 市 北 区 西 天 満4 丁 目4 番12 号
TEL( 0 6)6 3 6 4- 5 6 21( 代 )FAX( 0 6)6 3 6 5- 718 5
P/N 9720349(I)
No.1 Edited in 2009.9
(VG3511-8F)
Printed in Japan 2009.8.1H I
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