An EVA injection molding machine screw
By installing a protective shroud on the outside of the EVA injection molding machine screw and supplying air for cooling, the problem of premature foaming caused by frictional heating of the screw was solved, thus achieving continuous production and improved efficiency.
CN224616914UActive Publication Date: 2026-08-11NINGBO TIANYOU INJECTION MOLDING CO LTD
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Patent Information
- Application Number
- CN202521467075.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-14
- Publication Date
- 2026-08-11
- Estimated Expiration
- 2035-07-14
AI Technical Summary
Technical Problem
During long-term operation, the EVA raw material generates heat due to friction, causing the temperature to rise. If the temperature exceeds the set value, the material foams prematurely, affecting product quality and interrupting production, thus failing to meet the needs of modern continuous production.
Method used
A protective shroud with a fan is installed outside the screw body to cool the EVA raw material and keep the temperature within the set range to prevent premature foaming.
Benefits of technology
It achieves cooling without stopping the machine, ensuring continuous production, improving efficiency, reducing costs, and preventing localized high-temperature foaming.
✦ Generated by Eureka AI based on patent content.
Abstract
This utility model provides an EVA injection molding machine screw, relating to the field of injection molding machines. It includes an injection system, the output end of which is connected to the input end of the screw body, and the output end of the screw body is connected to the input end of the mold body. A protective shroud is fitted around the screw body, and a fan is installed on at least one side of the protective shroud. The fan blows air into the protective shroud to cool the molten material transported by the screw body, inhibiting pre-foaming before the material enters the mold. This application, by installing a protective shroud with a fan outside the screw body, can provide real-time air cooling, preventing premature foaming of the material above 80°C, eliminating the need for machine shutdown for cooling, ensuring continuous production, improving efficiency, reducing costs, and solving core problems.
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