Screw rotating speed control method for improving plasticizing quality of injection molding machine

A technology of screw speed and injection molding machine, which is applied in the field of setting the screw speed value in the plasticizing process of the injection molding machine, can solve the problems of long time for determining process parameters and many times of mold trial, so as to improve the uniformity of melt plasticization and increase the Plasticizing quality, the effect of reducing material waste

Active Publication Date: 2021-09-21
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in actual production, the diversity of equipment and materials results in a large number of trial molds for specific products and a long time for determining process parameters.

Method used

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  • Screw rotating speed control method for improving plasticizing quality of injection molding machine
  • Screw rotating speed control method for improving plasticizing quality of injection molding machine
  • Screw rotating speed control method for improving plasticizing quality of injection molding machine

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Embodiment Construction

[0027] The present invention will be further described below through specific embodiments. The following description is only a part of the embodiments, and any non-creative replacement or modification based on the examples of the present invention, and other obtained embodiments belong to the protection scope of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0028] The invention relates to a screw speed control method for improving the plasticizing quality of an injection molding machine. The equipment mainly includes a plasticizing unit of an injection molding machine, a screw displacement sensor, a sensor controller, a plasticizing servo motor, a servo motor controller, and an injection molding machine controller. Wait.

[0029] A screw speed control method for improving the plasticizing qual...

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Abstract

The invention discloses a screw rotating speed control method for improving plasticizing quality of an injection molding machine, the screw rotating speed control method comprises the following steps that a current displacement value of a screw is collected through a displacement sensor arranged at the tail end of the screw, a screw structure parameter and an initial process parameter set value are read by an injection molding machine controller, and the values are substituted into a screw rotating speed control function calculation model; and a screw rotating speed control scheme about the real-time screw displacement is obtained and is transmitted to an injection molding machine plasticizing motor servo control system to control the screw rotating speed in the current period in real time, so that the uniformity of the melt plasticizing quality is realized. According to the screw rotating speed control method for improving the plasticizing quality of the injection molding machine, the plasticizing quality of a plastic melt is improved, the uniformity of the melt is improved, and the mold testing frequency caused by replacement of equipment or materials is reduced.

Description

technical field [0001] The invention belongs to the field of injection molding, and in particular relates to a method for setting the rotational speed value of a screw during the plasticization process of an injection molding machine. Background technique [0002] Plastics have the characteristics of light weight and good chemical stability, and are widely used in various fields. Injection molding is one of the main processing methods of plastics. Nowadays, the precision of plastic products puts forward higher requirements on the injection molding process, and the quality of plasticization is a prerequisite for ensuring the precision of injection molded products. During the plasticizing process, the screw moves back axially while rotating, and the effective length of the screw decreases continuously, resulting in differences in the thermal history and shear history of the materials participating in plasticizing at different times, resulting in a decrease in the uniformity of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/76
CPCB29C45/76B29C2945/76605B29C2945/76665
Inventor 谢鹏程朱金柏赵梓良丁玉梅杨卫民
Owner BEIJING UNIV OF CHEM TECH
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