Injection molding machine

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AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By controlling the temperature of the cylinder block according to the temperature of the mold device in the injection molding machine, the problem of poor molding caused by inconsistent temperature increase speed of the cylinder block and the mold device is solved, and the effect of reducing the residence time of the molded material and improving the quality of the molded product is achieved.

CN114953377BActive Publication Date: 2025-03-28SUMITOMO HEAVY IND LTD

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Patent Information

Application Number: CN202210176973.5
Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner
Priority Date: 2021-02-26
Filing Date: 2022-02-25
Publication Date: 2025-03-28
Estimated Expiration: 2042-02-25

Application Information

Patent Timeline

26 Feb 2021

Priority

25 Feb 2022

Application

CN202210176973.5

28 Mar 2025

Publication

CN114953377B

IPC: B29C45/73; B29C45/78

CPC: B29C45/73; B29C45/7306; B29C45/78; B29C2945/76531; B29C45/74; B29C2945/76668; B29C2945/76933; B29C2945/7604

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AI Technical Summary

Technical Problem

In injection molding machines, the heating speed of the cylinder and mold device is inconsistent, resulting in the molding material staying in the cylinder for a long time, and it is prone to yellowing and other molding defects.

Method used

By providing a heating cylinder and a control unit in the injection molding machine, the heating of the cylinder block is controlled according to the temperature of the mold device, so as to ensure that the molding process is completed as soon as possible after the molding material reaches the target temperature.

Benefits of technology

It effectively reduces the residence time of the molding material in the heating cylinder, reduces yellowing and other poor molding situations, and improves the quality of the molded products.

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Abstract

The present invention suppresses molding defects caused by a long residence time of a molding material in a cylinder during heating. An injection molding machine includes a heating cylinder and a control unit. The heating cylinder is connected to a cavity space formed in a mold device and melts the molding material in order to mold a molded product in the cavity space. The control unit controls the temperature rise of the heating cylinder according to the temperature of the mold device.

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