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Welltec Machinery In House Testing of Their New Two-tone Injection Molding Machine with 8 Cavities Closure Production

Abstract: The new two-tone injection molding machine by Welltec is optional with vertical, parallel, piggyback arrangements to accomodate multi-component, multi-color injection production. With the rotary platen controlled by servo motor and extra wide tie bar spacing, it's an ideal injection molding machine for the production of 2 color parts.

Tags: Welltec Machinery, Welltec Injection Molding Machine, Two Tone Injection Molding Machine, Welltec 160P, SWITEK Robot

Welltec in house testing their new two-color injection molding machine 160P in 8 cavities closures production.

The new two-tone injection molding machine by Welltec is optional with vertical, parallel, piggyback arrangements to accomodate multi-component, multi-color injection production. With the rotary platen controlled by servo motor and extra wide tie bar spacing, it's an ideal injection molding machine for the production of 2 color parts.

With 2 sets of independent injection units, the size of two tone injection molding machine will generally larger than a regular servo injection molding machine, it would be very important that when you're choosing a robot for this kind of injection molding machine ,the length of the traverse stroke would be much longer compared to the regular injection molding machine of the same clamping force. In this case the robot for Welltec 160p should be SWITEK 3 Axis servo injection robot SW6308DS-20.



Injection Molding Machine for PVC/PPR Pipe Fittings Production
Chenhsong Servo Injection Molding Machine
JM328-MK6C

JM328-MK6 -- Chenhsong High Precision Hydraulic Servo Injection Molding Machine

No. Name Value
1 Clamping Force 3280 kN
2 Shot Weight 1347 g
3 Shot Speed 472 mm/s
4 Screw Diameter 75 mm
5 Opening Stroke 660 mm
6 Space Between Tie Bars 680 x 680 mm
7 Mold Thickness (Min) 225 mm
8 Mold Thickness (Max) 680 mm
9 Pumper Motor 48 kW
10 Heating Capacity 26 kW

Why is 8 Cavities Mold Design the Best Solution for Elbow with Nuts?

For PVC/PPR pipe fittings with nuts with a diameter of around φ25mm most of the producer will choose an injection molding machine of around 250T and a mold cavities of 8 Cavities, will a more cavities mold design with a larger injection molding machine a better choice for pipe fittings producers?

pipe fittings

8 Cavities Pipe Fittings Nut Insertion Automation Solution

According to the experience of working with LESSO group in the automiztion of their PVC/PPR pipe fittings injection production system, we finally decide to have an 8 cavities mold deisgn with 250T injection molding machine because:

  • A 250T injection molding machine with 8 cavities mold design is an economic investment to start up a pipe fittings injection production system.
  • For a pipe fittings auto-injection production system with nut insertion, the weight of the EOAT would be very heavy. An eight cavities solution will perfectly balance the payload of the injection robot and weight of the EOAT.
  • An 8 cavities layout design of the pipe fittings will produce a better mold flow during the injection production of the pipe fittings.

Anyway, to upgrade your PVC/PPR pipe fittings injection molding system you must keep in mind that it's only valuable to have an automation system for bulk production products, which means that one injection molding machine with only one mold to be equipped with one automation system for the pipe fittings' Nut insertion, runner cutting and parts picking.

For any other question about a PVC/PPR pipe fittings auto-production system please contact Adams from SWITEK for a turn-key solutions of pipe fittings production.


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