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Silicone Wire Seal Mold

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  • Product Detail

Product Core Requirements and Technology Positioning

To make cable seals efficiently for the electronics, automotive and home appliance industries, this solution uses a 1-out-of-128 cold runner mould structure. The core is made of S136 mould steel (heat-treated to HRC48-52) and the mould frame is made of P20 steel. Together with a high-tonnage injection moulding machine and an automated manipulator system, this solution achieves the production goals of being extremely precise, extremely efficient and requiring minimal human intervention, and meets the strict industry requirements for the production of cable seals. The mould frame is made of P20 steel, combined with a high-tonnage injection moulding machine and an automated robotic system, to achieve ultra-high precision, ultra-high efficiency and low manual intervention, to meet the industry's strict requirements on cable seals in terms of dimensional tolerance (±0.05mm), surface finish (Ra ≤ 0.4μm) and lot consistency.



128-Cavity Mold Design:

The 128-cavity design allows the production of 128 wire seals in a single injection cycle, drastically improving production efficiency. Traditional molds typically produce just 1 or 2 seals per cycle, but with our wire seal mold, production output is significantly increased, reducing cycle times and enhancing overall productivity.

Mold System Design and Key Technologies Mold Core and Parting Surface:

DesignThe mold core is made of S136 tool steel, which is vacuum-quenched and tempered twice to make it hard (HRC 48-52) and resistant to corrosion. This makes it suitable for use with liquid silicone rubber (LSR) vulcanization environments.

The cavity is designed using 3D modelling and silicone shrinkage compensation (1.5%-2.0%), with the parting surface precision-ground (flatness ≤0.005mm) and coated with titanium nitride (TiN) to improve demolding performance.

Cold Runner System Design:

The design of the cold runner system is made up of several stages, which makes sure that all 128 cavities are filled in the same way. And the pressure is kept at a level of less than 5% (ΔP) so that problems like flash and short-shot are not caused. The runner design is made better using Moldflow simulation, which makes sure that the temperature at the front of the flow is no more than 3°C. This also means that the cycle is no more than 40 seconds.


 FAQ

Q: QUALITY CONTROL?

A: We have QC person stay on the production lines to do the inspection. All products must have been inspected before delivery. We do inline inspection and final inspection.

1.All raw material checked once it arrive our factory.

2.All pieces, logos and all details checked during production.

3.All packing details checked during production.

4.All production quality and packing checked on final inspection by manual after finished.