Cumsa Unveils Innovative Vacuum System for Injection Moulding Industry

Avoiding gas entrapment Cumsa launches new vacuum system for superior injection moulding

2024-03-29 Source: Cumsa 2 min Reading Time

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Setting a new standard in manufacturing efficiency, Cumsa has unveiled an innovative vacuum system tailored for the injection moulding industry. This system is designed to remove air from the mould cavity both before and during the injection process, effectively addressing the issue of gas entrapment.

The vacuum jet units use much less energy than vacuum pumps. (Source: Cumsa) — The vacuum jet units use much less energy than vacuum pumps.
(Source: Cumsa)

Cumsa introduces a new vacuum system designed to enhance injection moulding processes. This innovative system is engineered to create a vacuum of up to -900 mbar by extracting air from the mould cavity before and during the injection process, boasting a suction capacity of 60 litres per minute. This process effectively eliminates common moulding issues associated with gas entrapment, ensuring a smoother manufacturing operation.

A standout feature of this system is its dual-function capability, which not only vacuums out air but also blows off injection gases through the same air channels. This addition serves a dual purpose: it cleans the vents to prevent clogging and aids in ejecting the parts after each cycle, streamlining the manufacturing process.

The implementation of vacuum technology in injection moulding has shown to significantly improve the quality of the manufactured parts. Benefits include enhanced solidity of the parts, faster filling times and a reduction in flashing, contributing to a more efficient production line. Notably, these devices consume much less energy compared to traditional vacuum pumps, aligning with the growing demand for sustainable manufacturing solutions.

The system can be used as a standalone unit or integrated with other Cumsa vacuum devices for increased pulling force or specific vacuum needs. It features a unique single outlet for both pulling and blowing air, marking it as the only system of its kind currently available in the market. Additionally, a version with a double outlet offers users the ability to select from four different vacuum levels, automating the process to repeat for every cycle without manual adjustment.

This vacuum system incorporates electronics and a solenoid valve that automatically manages the opening and closing of the Vacuum Valve (VV) during the injection process, further enhancing operational efficiency. With the option to combine this system with the LV (Laminar Gas Outlet) and VD (Double Valve) gas evacuation systems, manufacturers can further optimise the vacuum generation and subsequent blowing of the plastic part, offering a versatile solution to a wide range of injection molding challenges.

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