9.10 Valve Pin Height Adjustment QCVG Actuator

9.10 Valve Pin Height Adjustment QCVG Actuator
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Service and Maintenance / Valve Pin Height Adjustment QCVG Actuator
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9.10 Valve Pin Height Adjustment QCVG Actuator
Precondition for the following steps are to be performed with the QCVG actuator installed in the
mold, and the system at operating temperature.
Heavy Weight Hazard
Transport and lifting equipment should be operated only by trained personnel.
Operate lifting and transport equipment slowly and carefully to avoid uncontrolled
swinging of the manifold.
Lifting and transport equipment for lifting Hot Runner Systems shall be
approved and properly rated taking into account the weight and size of the
manifold.
Hot Surfaces Hazard
Contact between the skin and hot surfaces could result in burns.
Use personal protective equipment, such as gloves, apron, sleeves and face
protection, to guard against burns.
When servicing or handling the hot runner system outside the manifold plates
or the injection molding machine, care must be taken to heed the hot surface
exposure warnings.
Hazard of Material Damage
The highest operating pressure is 103 bar (1500 psi), the typical
operating pressure is between 41 bar and 82 bar (600 psi and 1200 psi).
A lower operating pressure increases the seal life.
The following steps are to be performed with the system at operating
temperature.
Clamping plate cooling (max. 100 °C / 210 °F) must be on to prevent
damage to the actuator seals.
After switch off the hot runner heater, the cooling for the actuator
have to be turned on for at least 15 minutes, to avoid damages of
the actuator sealing.
Master Language is English EN
Hot Runner System Instruction Manual
RESTRICTED: Property of Synventive.
- 317 - For limited third party distribution based on need and intended use.
SVC-17-0001_EN-Rev03
All rights reserved. Errors and omissions excepted
© 2015 Synventive Molding Solutions
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Service and Maintenance / Valve Pin Height Adjustment QCVG Actuator
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9.10.1 Height Adjustment of shut-off Valve Gate Pins with QCVG Actuator
Installation and valve pin adjustment
1) Slide the valve pin (VP) into pin head adapter (16).
NOTICE
If the pin has previously been contoured, note the orientation.
The pin head adapter (16) is keyed to the actuator support
(14), found on the manifold.
Doc003179.png
2) Place the actuator coupling (10) with the valve pin (VP) and pin head
adapter (16) on the actuator support (14).
Doc003180.png
3) If the Hot Runner System is using a tapered shut-off, make sure the
valve pin (VP) is not seated in the gate at this time.
4) Verify that the flange of the actuator coupling (10) is resting on the
actuator support (14).
If a gap is present:
NOTICE
This indicates the valve pin is making contact in the gate.
●● Rotate the adjusting screw (09) to lift the valve pin until the
gap is eliminated.
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5) Tighten the set with the socket head cap screw (13).
Master Language is English EN
Hot Runner System Instruction Manual
RESTRICTED: Property of Synventive.
- 318 - For limited third party distribution based on need and intended use.
SVC-17-0001_EN-Rev03
All rights reserved. Errors and omissions excepted
© 2015 Synventive Molding Solutions
C P
Service and Maintenance / Valve Pin Height Adjustment QCVG Actuator
T A
Heavy Weight Hazard
6) Install the clamping plate (with the actuator housing already installed in
them).
Doc003119.png
Actuator parts
(01) Actuator housing
(02) Actuator cap
(03)Piston
(04)O-ring
(05)O-ring
(06)Poly-Pack
(07) Socket head cap screw M5x12
(08) Socket head cap screw M6x50
(09) Adjusting screw
(10) Actuator coupling
(11) Actuator disk
(12) Retaining ring for shafts
(13) Socket head cap screw M6x18
(14) Actuator support
(15) Flat head screw M6x12
(15) Flat head screw M6x 20
(16) Pin head adapter ø8.0
(17) Valve pin bushing nut
(18) Valve pin bushing
(19) Support spacer (when required)
Doc003152.tif
Master Language is English EN
Hot Runner System Instruction Manual
RESTRICTED: Property of Synventive.
- 319 - For limited third party distribution based on need and intended use.
SVC-17-0001_EN-Rev03
All rights reserved. Errors and omissions excepted
© 2015 Synventive Molding Solutions
C P
Service and Maintenance / Valve Pin Height Adjustment QCVG Actuator
T A
7) Install the actuator disk (11) over the actuator coupling (10) in the
piston (03).
Doc003181.png
8) Ensure that the retaining ring (12) is correctly positioned in groove of
actuator coupling (10).
Doc003182.png
Hot Surfaces Hazard
Contact between the skin and hot surfaces could result in burns.
9) Heat the mold up to operating temperature.
NOTICE
Wait additional 30 minutes until the system is entirely heated up.
10)Close the actuator with a hydraulic pressure of 2,75 bar (36 psi).
Master Language is English EN
Hot Runner System Instruction Manual
RESTRICTED: Property of Synventive.
- 320 - For limited third party distribution based on need and intended use.
SVC-17-0001_EN-Rev03
All rights reserved. Errors and omissions excepted
© 2015 Synventive Molding Solutions
C P
Service and Maintenance / Valve Pin Height Adjustment QCVG Actuator
T A
Height adjustment of straight shut-off valve gate pins
●● Turn the adjusting screw (09) until the face of the valve pin (VP)
is in the desired location for molding (typically 0.13 mm (005”)
protrusion through the gate).
●● To take up the play in the valve pin (VP) and coupling assembly,
access the parting-line side of the valve pin (VP) and push
against it before locking the socket head cap screw (13).
NOTICE
The adjusting Screw (09) has a 1 mm pitch to facilitate fine
adjustment.
Doc003153.png
Height adjustment of conical shut-off valve gate pins
●● Turn the adjusting screw (09) clockwise until the valve pin
(VP) seats in the gate.
●● Then turn off the hydraulics and turn the adjustment screw
(09) an additional 1/8 turn clockwise to preload the valve pin
(VP) 0.13 mm (005”).
NOTICE
The adjusting Screw (09) has a 1 mm pitch to facilitate fine
adjustment.
Doc003153.png
11)Holding the adjustment screw (09) in place.
12)Tighten the socket head cap screw (13).
13)Actuate the valve gate several time and check for correct valve pin
seating.
Master Language is English EN
Hot Runner System Instruction Manual
RESTRICTED: Property of Synventive.
- 321 - For limited third party distribution based on need and intended use.
SVC-17-0001_EN-Rev03
All rights reserved. Errors and omissions excepted
© 2015 Synventive Molding Solutions
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