GLOBAL OS 7200 sewing machine Operating instruction manual

Below you will find brief information for sewing machine OS 7200. The OS 7200 is a double needle sewing machine that can be used for a variety of sewing tasks. It is particularly suitable for seam stitching on uppers (open uppers, tubular maccasin with insole cut) as well as on full skin, medium-heavy flesh split (suitcases, tool bags, travelling bags) and heavy fabric like jeans. This machine is also capable of sewing 12 different kinds of stitching seams (six 1 needle and six 2 needles) with a stitch length of 0-10mm. The machine also features stepless speed regulating and a motor of 550W/220V (single-phase) or 550W/380V (three-phase).

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 OS 7200 DOUBLE NEEDLE LEVEL
SEWING MACHINE
OPERATING
INSTRUCTION MANUAL
SERIAL NO. :
CONTENT
1. MACHINE DESCRIPTION эененнененемененсненее нее нем ее ееееттете 1
&gt;. TECHNICAL FEATURES OF OS 7200 еее see cent enee eee eee
3, PREPARATION OF THE MACHINE READY FOR USE etw een ne
31 Fix the needles +==---==&lt;+rerecrnccananacacanacnancaaracaacaarararacaaraerna era ren &oacute;ne rea
3.2 Needle thread preparation “&lt;&lt;ecceeeceeeeeeeenes en encene ete naneraae aretes 2
4. USE OF THE MACHINE “+--“--===eerreconenecccroocnrrneonerenavocacaranenonaraaanaaas 2
4.1 Start pedal | сееееннененееноеенннененннеенеменеенннпененменттнти 2
4.2 Stitching length adjustment setting -““=-“======+terereeeeneeernertane eat rat rt
4.3 Tension adjustment setting of needle thread | эееееененененнинеененеие 7
4.4 Height adjustment setting of presser wheel +&lt;&lt;&lt;v&lt;cecceeeeenenes essence eee 3
4.5 Pressure adjustment setting of presser wheel ““cemeececeeeeeeneeeeene eee rentes 3
5. REPLACEMENT AND ADJUSTMENT &lt;:--==&lt;=ecrccecaacacacaranconanananaanecnareaea 3
5.1 Adjustment of distance between two needles recssssrersersass sr eseran senses 3
572 Setting stitching seam Cae ANT FEE PIR NGS IRS HII NIT AGI APE ATER ENE RED OY .....................f/
53 Adjustment of setting shuttle-needle timing AD отно о Фото ноте тех 6
54 Adjustment of setting tooth transport esr ET EASE NA SEE RIP REE IEN RET PETRI AINSI PRE RY 6
5.5 Adjustment of setting needles intercross timing ===&quot; ...................../
5.6 Adjustment of setting the distance of the needle bar be pushed --=&lt;.5e-eeeeeseoss 7
5.7 Adjustment of Stopping position. tms ee een e rennen nas ete 7
6. MAINTENANCE AND REPAIR creceseeeerescevnnarenansencnatsancaranssannresssnsecnss 8
7. SPARE PARTS FOR THE SEWING MACHINE — &lt;-*==5eve0vereneonenacaaaacaneca ras 8
8. PARTS SUPPLIED WITH THE MACHINE — “&lt;=e00v&lt;eceoooereaaanecanacoonanvacanae
PARTS DRAWIING | сЭенезМенебеыееымосменененененсеенененнненни
Thank you very much for your choice of this double needle level sewing
machine . Please read the manual carefully before use!
1. MACHINE DESCRIPTION
OS 7200 is a double needle sewing machine. it is particularly suitable for seam
stitching on uppers(&quot;open&quot; uppers,tubular maccasin with insole cut) as well as on
full skin, medium-heavy flesh split(suitcases,tool bags, travelling bags)and heavy
fabric like jeans.
The operator can choose twelve kinds of stitching seams(six 1 needle programs
and six 2 needle programs)according to the operator's requirement.
2. TECHNICAL FEATURES OF OS 7200
Sewing Speed: Stepless speed regulating
Stitch Length: 0-10mm
Thread Diameter: 0.6-1.0mm
Sewing Needle: DDX 1(160/180/200)
Motor: 550W/220V(Single-phase)
or 550W/380V(Three-phase)
Net Weight: 170kg
Total Packed Weight: 200kg
Machine Dimensions: 07% 68x 122cm(L.x Wx H.)
Dimensions With Packing: 107% 80x 135cm (L. x W. x H. )
3. PREPARING THE MACHINE READY FOR UEE
3.1 Fix the needles( Fig 1)
To fix the needles , proceed as follows
— Turn the pulley(203) in the correct direction as shown on the belt cover by
hand so that needle bar comes to its highest position(at this position the
distance form the needle holder's(of the needle bar220/230) upper plane to
the needle bar supporter's(223/228) below plane is 1.5mm)
-- Insert the needles upto the bottom of needle hole and tighten the screws
keeping the short groove is back against on to the operator
Needle bar
shelf
(223/228
uo
Needle bar
(222/230)
Fig 1 Fig 2
3.2 Needle thread preparation
To prepare the needle thread , proceed as follows
~- Rotate the pulley (203) by hand until the needles come to its highest
position
-- Thread the needle thread by the path indicated in Fig 2
4. USE OF THE MACHINE
4.1 Start pedal
First of all ‚switch on the machine to watch if the rotation of motor is
conformable to the red arrow on the belt cover . If the direction is
opposite , switch in the other way round. Then operate the pedal in three
different movement(Fig 3)
-- Stepping on forward (Position A) means advance. Stepping on lightly is
slow and Stepping on heavily is fast. Avoid stepping on heavily at the
very beginning.
-- Stop in the neutral position
-- Stepping on backward (Position B) means lifting the presser wheel(315)
so that it is easy to place the shoe onto the stitching area.
Ра
=
)|| 7500
Screw
Fig 3 Fig 4
4.2 Stitching length adjustment setting
This setting is to determine the machine sewing stitch length or the
distance between one stitch and the next.
To adjust stitching length , proceed as follows
— Turning the setting screw in a clockwise direction to reduce the stitching
length(Fig 4) and turning the setting screw in a anti-clockwise
direction to increase the stitching length.
4.3 Tension adjustment setting of needle thread
The setting is to adjust the needle thread tension so that the stitching on
the leather is neither too tight nor too loose.
To set the needle thread tension , proceed as follows(Fig 5)
-- Rotate the thread tension nut 1 in the clockwise direction will tighten the
tension of the needle thread, and vice-versa.
-- Loosen the nut 5 and turn the thread tack-up spring shaft in the
anti-clockwise direction will increase the pressure of the tack-up spring ,
and vice-versa.
-- Tighten the nut 5.
Setting
knob(301)
&gt; |
|]
A
Fig 5 | Fig 6
4.4 Height adjustment setting of presser wheel (Fig 6)
The height of presser whool can be adjusted by turning knob (301).
To set the height of presser wheel, proceed as follows
-- Turning the knob(301) in the clockwise direction , the presser whool(315)
will be moved downward . And turning the knob(301) in the anti-clockwise
direction , the presser whool(3 15) will be moved upward. |
4.5 Pressure adjustment setting of presser wheel (Fig 6)
~The pressure of presser whool can be adjusted by moving presser bar
holder's(307) position. | о 5
To set the pressure of presser wheel, proceed as follows
-- Loosen the screws of the presser bar holder(307).
&copy; -- moving the presser bar holder(307) upward will increase the pressure of the
presser whool(315) and moving press bar holder(307) downward will
reduce the pressure of the presser whool(315).
5. REPLACEMENT AND ADJUSTMENT
5.1 Adjustment of the distance between two needles
There have two kinds of crank(236A/236B) can be used on GR-81, So that
the diatance between two needles can be 7.5mm or 5.5mm. The distance
between two needles will be 7.5mm if the crank(236A) is used and The
distance between two needles will be 5.5mm if the crank(236B) is used.
To replace the crank(236A/236B),proceed as follows(Fig 7)
— Loosen the screw 1 of the connecting lever(235) and screw 2 of the
eccentric pin(238). В
— Loosen the screws 3 of the crank(236A/236B).
-- Remove the crank(236A/236B) from shaft (404).
-- Fix another crank (236A/236B) on shafi(404).
— After replacement, fix all the parts that described above and tighten the
screws again. i
Connecting lever
(235)
screw 1
Crank
(236A/236B)
(236A) (236B)
screw 3
Eccentric pin
(238)
screw 2
Fig 7
Attention: After replacement ,rotate the pulley(203) by hand at least 4 circles
to see if the distance between two needles is always same.If not , lossen the
screw 3 of the crank(236A/236B) and rotate the crank(236A/236B) &agrave; little
angles in the clockwise direction or in the anti-clockwise direction until the
distance between two needles is always same before and after two needles be
intercrossed.
5.2 Setting stitching seam
The operator can choose one of twelve stitching seams(six 1 needle and six
2 needles) as shown in the table 1. The stitching seam can be set by replace
the cam(408) and cam(409). |
To set stitching seam , the proceed as follows(Fig 8)
-- Remove the side cover.
-— Loosen the screws 1 of the lever(405) and remove the tever(403)
-- Loosen the screws 2 of the cam(408).
— Remove the cam(408) and the cam(409).
-- According to the stitching seam be required, choose the cam(408) and
cam(409) as shown in the table 1 and fix them again.
-- Fix the lever(405) and the sidecover again.
Cam (408) —
Screw2
2 needies XDD
| needie NN
It is forbidden
X= TO UL
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Cam 408B | |
| 2 needles is forbidden
Two Needle Fix UT -
2 needles _.—— neg . ,
bars be not | It is forbidden It is forbidden —
intercrossed Fix _ a.
| 1 needie |
Table 1 |
To seting stitching seam as &quot;Straight line&quot;, proceed as follows
-- loosen the screw 3 (shown in Fig 7).
— Tighten the screw 4 (shown in Fig 7).
— Loosen nut 1 and screw 2, unconnecting the Connecting board (420) an
the Pushing lever (421). (as shown in Fig 12)
— Attention: After setting the stitching seam ,rotate the pulley(203) by hand at
least 4 circles to see if the distance between two needles is always same.If not,
lossen the screw 3 of the crank(236A/236B) and rotate the crank(236A/236B)
a little angles in the clockwise direction or in the anti-clockwise direction until
the distance between two needles is always same before and after two needles
be intercrossed. (Fig 7)
5.3 Adjustment of setting the shuttle-needie timing
To adjust the shuttle-needle timing, proceed as follows(Fig 9)
-- Loosen the screw 1 of the gear holder(518).
-- Turn the pulley(203) by hand in the correct direction so that the needle
comes to its lowest position. Thereafter, raise the needles by 5mm from
the lowest position, and then adjust the shuttle so that the tip of shuttle
turns across left needle (operator's side view) about 1mm and the tip of
the shuttle is above the eye of the left needle about 2mm(Fig 10).
— After adjustment, tighten the screws 1 of the gear holder(518) again.
Raise Smm from
its lowest position
Fig 9 | - Fig 10
5.4 Adjustment of setting tooth transport
Turn the pulley(203) by hand in the correct direction so that the needle
comes to its highest position. At the same time , the transport tooth moves
to its highest and backest position(operator's side view), and begining to
move forward.
To adjust tooth transport, proceed as follows(Fig 11)
-- Lossen the screws of the gear(209).
-- Turn the gear(209) in the clockwise direction(operator's side view) , the
timing of the transport movement will be faster . And vice-versa.
5.5 Adjustment of setting needles intercross timing
Turn the pulley(203) by hand in the correct direction so that the needle comes
to its highest position. Then , two needles being crossed and stoped in the
central line between two needles.
To adjust the needles intercross timing, proceed as described at 5.4(Figl 1)
5.6 Adjustment of setting the distance of needle bar be pushed
Turn the pulley(203) by hand in the correct direction so that the needle comes
to its highest position. Then , the back needle bar have pushed to its backest
position(oprator's side view) and the needle bars be knocked together should
be avoided when they are intercrossing .
To set the distance of needle bar be pushed, proceed as follows(Fig 12)
-- Turn the pulley(203) by hand in the correct direction so that the needie
comes to its highest position.
— Loosen the nuts 1 and screws 2 of the connecting board(420).
-- Move the pushing lever(421) towards operator will increase the distance
of the needle bar be pushed , and vice-versa.
— Tighten the screws 2 and nut | f the connecting board(420) again.
1
Positioner
Screw 1
lever(421) . ze _
Fig 12
| Fig 13
5,7 Adjustment of stopping position o |
The stopping position is used to control the pause position of the needie
bar. - |
To adjust the stopping position , proceed as follows(Fig 13)
-- Loosen the screw 1 of the positioner.
——- Adjust the relative position between the positioner and the main shaft .
-- After adjustment , tighten the screw 1 of the positioner again
6. MAINTENANCE AND REPAIR
The machine must be daily lubricated at the end of every shift. rotating parts
and all lubricate eyes on the machine must be carefully and accurately lubricated
daily. Always keep the machine clean and clean the presser wheel, shuttel and
shuttle seat every shift. |
Check and oil the machine carefully when it is reused after a long time. Test
run and running slowly are required.
7. SPARE PARTS FOR THE SEWING MACHINE
Code number
236B
408A
409A
409€
514
515
542
‘8. PARTS SUPPLIED WITH THE MACHINE
name
Allen wrenches (1.5mm-1
{ T-Allen wrench
IX
OS 7200 DOUBLE NEEDLE LEVEL
SEWING MACHINE
Parts
Drawing
7200-107
[
7200-120
7200-105
7200-116
7200-103
7200-115
7200-104
7200-102
7200-101
—10-
7200-110
7200-118
7200-111
7200-117
&gt;
O
7200-119
О 7200-114
\
O UN
&copy; 7200-126
Qo
7200-121
E &raquo;
77)
(0 O.
7200-130
7200-132
7200-127
7200-129
7200-131
7200-128
Fig.No. Item Quantity Remarks
7200-101 | Bevel gear 1
7200-102 | Fixed sleeve 1
7200-103 | Sleeve of the winding shaft 1
7200-104 | Clamping spring 1
7200-105 | Winding shaft 1
7200-106 | Screwing pin 1
7200-107 | Stopper i
7200-108 Stopper lever 1
7200-109 | Screw 1
7200-110 | Narrowing rod 1
7200-111 | Winding amount adjusting rod l
7200-112 | Winding amount adjusting nut 1
7200-113 | Cone spring 1
7200-114 | Threading plate 1
7200-115 | Trigger piece of loosing thread 1
7200-116 | Connecting rod of loosing thread 1
7200-117 | Thread loosen lever 1
7200-118 | Screw pin of thread loosen lever 1
7200-119 | Support of thread loosen lever 1
7200-120 | Connecting rod 1
7200-121 | Rod of thread tighter(long) 1
7200-122 | Rod of thread tighter(short) 1
7200-123 | Cone spring 2
7200-124 | Nut 2
7200-125 | Thread guider rod(long) 1
7200-126 | Thread guider rod(short) &Icirc;
7200-127 | Thread take-up spring shaft 1
7200-128 | Threading wheel 2
7200-129 | Support 1
7200-130 | Torsion spring 1
7200-131 | Thread carrier 1
7200-132 | Thread take-up spring 1
-11-
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Fig.No. Item Quantity Remarks
7200-201 | Frame 1
7200-202 | Positioner support screw 1
7200-203 | Pulley 1
7200-204 | Bearing support 1
7200-205 Sleeve 1
7200-206 | Eccentric gear of shuttle swing 1
7200-207 | Connecting lever 1
7200-208 | Cover plate 1
7200-209 | Gear 1
7200-210 | Main shaft 1
7200-211 | Bobbin thread winding gear 1
7200-212 | Crank of needle bar 1
7200-213 | Location pin 1
7200-214 | Washer 1
7200-215 | Pin of thread take-up crank 1
7200-216 {| Connecting lever 1
7200-217 | Pin of connecting lever 1
7200-218 | Thread take-up lever 1
7200-219 | Connecting pin 1
7200-220 | Thread take-up connecting lever 1
7200-221 | Lower holder of back needle bar 1
7200-222 | Back needle bar 1
7200-223 | Back needle bar supporter 1
7200-224 | Higher holder of back needle bar 1
7200-225 | Pin of needie bar supporter 1
7200-226 | Sleeve 1
7200-227 | Support block of needle bar supporter 1
7200-228 | Fore needle bar supporter 1
7200-229 | Fore needle bar holder 1
7200-230 | Fore needle bar 1
7200-231 | Connecting lever of needle bar 1
7200-232-1 | Washer 2
7200-232-2 | Washer 2
7200-233 | Connecting block of push needle bar 1
7200-234 | Stopper block 1
7200-235 | Connecting lever 1
One is 236A and the
7200-236 | Crank 2 other is 236B
7200-237 | Connecting lever 1
7200-238 | Eccentric pin 1
7200-239 | Pin 1
—13-
7200-302
7200-301
1200-307
7200-304
7206-310
7200-317
7200-316
7200-311
7200-312
7200-312-2
7200-314
7200-315
-14—
Fig. No. Item Quantity Remarks
7200-301 | Setting knob 1
7200-302 | Stopping ring 1
7200-303 | Piston 1
7200-304 | Presser bar 1
7200-305 | Presser spring 1
7200-306 &sect; washer 1
7200-307 | Presser bar holder 1
7200-308 | Spring sleeve 1
7200-309 | Spring 1
7200-310 | Presser bar sleeve 1
7200-311 | Fixing block 1
7200-312 | Presser wheel seat 2
7200-312-2 | Guide screw 2
7200-313 | Spring 2
7200-314 | Presser whee! supporter 2 Symmetric each
other
7200-315 | Presser wheel 2
7200-316 | Presser wheel rocker arm 1
7200-317 | Screwing pin 1
7200-318 | pin 1
—15-
7200-402
7200-413
7200-414
7200-415
7200-418
7200-422
—16-
Fig.No. Item Quantity Remarks
7200-401 Idle gear 1
7200-402 | Eccentric pin of idle gear 1
7200-403 Sleeve of needle bar winding shaft 2
7200-404 | Needle bar winding shaft 1
7200-405 Connecting lever 1
7200-406 &iexcl; Roller pin 1
7200-407 | Roller 1
7200-408A | Cam 1
7200-408B | Cam 1
7200-409A | Cam 1
7200-409B | Cam 1
7200-409C | Cam 1
7200-410 | Gear 1
7200-411 Eccentric pin 1
7200-412 | washer 2
7200-413 | Fixed block 1
7200-414 Sleeve 1
7200-415 | Spring 1
7200-416 | Pushing shaft 1
7200-417 | Pin 1
7200-418 | Roller 1
7200-419 | Screw 1
7200-420 | Connecting board 1
7200-421 Pushing lever 1
7200-422 | Pin 1
—17—
7200-513 &copy;
7200-529
7200-504
7200-510
7200-507
7200-506 в \
7200-503
7200-502
7200-524
7200-517
e
&copy; 7200-528
1200-516
7200-527
7200-525
7200-515
7200-539
7200-537
7200-536
7200-535 „= &copy;
€
Ss &copy;
N e
—18-
Fig.No.
Item
Quantity
Remarks
7200-501
Frame seat
7200-502
Cupreous nut
7200-503
Aluminic cover
7200-504
Presser piece
7200-505
Location block
7200-506
Support pin
7200-507
Cover ring
7200-510
Quter shuttle seat
7200-511
Inner shuttle seat
7200-512
Location screw
7200-513
Bearing washer
7200-514
Shuttle
7200-515
bobbin
7200-516
Shuttle driver
7200-517
Shuttle driver shaft
7200-518
Gear holder
7200-519
Droved gear
7200-520
Driving gear
7200-521
Sleeve
7200-522
Lubricating ring
7200-523
Eccentric shaft
7200-524
Washer
7200-525
Pin
7200-526
Sleeve
7200-527
Washer
7200-528
Nut
7200-529
Pin
7200-530
Swing arm
7200-531
Bearing
7200-532
Roller pin
7200-533
Roller
7200-534
Spring
7200-535
Transport block
7200-536
Spring steel piece
7200-537
Transport lever
7200-538
Transport foot
7200-539
Lifting block
7200-540
Needle plate
7200-541
Cover
7200-542
Lug
—19-
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Key features

Double needle sewing machine
Suitable for various materials
12 stitching seams
Stepless speed regulation
550W motor

Frequently asked questions

The OS 7200 is particularly suitable for seam stitching on uppers (open uppers, tubular maccasin with insole cut) as well as on full skin, medium-heavy flesh split (suitcases, tool bags, travelling bags) and heavy fabric like jeans.

The OS 7200 sewing machine can sew 12 different kinds of stitching seams - six 1 needle and six 2 needles.

The OS 7200 sewing machine has a stitch length adjustment range of 0-10mm.