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injection molding machine

An injection molding machine and compression molding technology, applied in the field of injection molding machines, can solve the problems of reduced thickness accuracy and surface accuracy of molded products, and achieve the effect of preventing thermal deformation

Active Publication Date: 2022-03-18
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the technique of Patent Document 1, if the ejector rod etc. are deformed due to the heat generated during molding, the position of the movable member cannot be controlled to the desired accuracy, and the thickness accuracy and surface accuracy of the molded product may decrease.

Method used

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Experimental program
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Embodiment Construction

[0022] Hereinafter, the modes for implementing the present invention will be described with reference to the accompanying drawings. In each of the drawings, the same or corresponding structures are denoted by the same or corresponding symbols to omit the description.

[0023] (Injection molding machine)

[0024] figure 1 It is a figure which shows the state at the time of completion|finish of mold opening of the injection molding machine of one Embodiment. figure 2 It is a figure which shows the state at the time of mold clamping of the injection molding machine which concerns on one Embodiment. like Figure 1 to Figure 2 As shown, the injection molding machine includes a mold clamping device 100 , an ejector device 200 , an injection device 300 , a moving device 400 and a control device 700 . Hereinafter, each constituent element of the injection molding machine will be described.

[0025] (Clamping device)

[0026] In the description of the mold clamping device 100, th...

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PUM

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Abstract

The object of the present invention is to prevent the thickness accuracy and surface accuracy of the molded product from deteriorating due to thermal deformation of the ejector rod or the like during compression molding. An injection molding machine according to one aspect of the embodiment includes: an ejector rod; and a control unit that controls the advance and retreat of the ejector rod, and advances the movable member from a compression standby position to a compression molding position by the ejector rod, whereby The molding material filled in the cavity space is compressed, and the injection molding machine is characterized in that when the control unit advances the movable member by the ejector rod, the movable member contacts the fixed mold. The position to determine the compression molding position.

Description

technical field [0001] This application claims priority based on Japanese Patent Application No. 2018-067179 filed on March 30, 2018. The entire contents of the Japanese application are incorporated herein by reference. [0002] The present invention relates to an injection molding machine. Background technique [0003] It is known to use an ejector device having an ejector rod and a movable member for injection molding of lenses and the like, and to compress and fill a cavity by pushing the movable member from a compression standby position to a compression molding position by the ejector rod. Compression molding technique of molding material of space (for example, refer to Patent Document 1). [0004] Patent Document 1: Japanese Patent Laid-Open No. 2016-83776 [0005] However, in the technique of Patent Document 1, if the ejector rod or the like is deformed by the heat generated during molding, the position of the movable member cannot be controlled with the desired ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/40B29C45/76
CPCB29C45/4005B29C45/7626B29C45/76B29C45/56B29C2945/76083B29C2945/76264B29C2945/76006B29C2945/7602B29C2945/76314
Inventor 上远野智祐雷磊
Owner SUMITOMO HEAVY IND LTD