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Injection molding machine

A technology for injection molding machines and parts, applied in the field of injection molding machines, can solve problems such as deterioration of molded product quality and unstable molding, and achieve excellent molding stability

Inactive Publication Date: 2016-08-24
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, molding may become unstable and the quality of molded products may deteriorate

Method used

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  • Injection molding machine
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Examples

Experimental program
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Embodiment Construction

[0031] Hereinafter, modes for implementing the present invention will be described with reference to the drawings. In each of the drawings, the same or corresponding components are given the same or corresponding symbols and descriptions thereof are omitted.

[0032] (mold clamping device)

[0033] figure 1 It is a figure which shows the clamping apparatus of the injection molding machine which concerns on one Embodiment of this invention. figure 1 Indicates the clamping status. In the description of the mold clamping device, the moving direction of the movable platen when the mold is closed is described as the front, and the moving direction of the movable platen when the mold is opened is described as the rear.

[0034] The injection molding machine 10 includes: a frame 11; a fixed platen 12 fixed to the frame 11; A plurality of (for example four) connecting rods 16 are erected between the fixed platen 12 and the toggle support member 15 .

[0035] The injection molding ...

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PUM

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Abstract

PROBLEM TO BE SOLVED: To provide an injection molding machine superior in molding stability.SOLUTION: An injection molding machine 10 comprises: an injection member 52 movably provided in an axial direction in a cylinder 41 and injecting a molten resin in the cylinder 41 to fill the molten resin in a mold 30; a driving part 43 moving the injection member 52; a control part 80 controlling the driving part 43; and a resin pressure detector 57 detecting a resin pressure applied to the injection member 52. The control part 80 stops the injection member 52 after the start of an injection step and before the start of a pressure holding step, calculates a time integration value of a detection value detected by the resin pressure detector 57 while the injection member 52 is stopped, and adjusts a filling amount by the injection member 52 on the basis of the calculated time integration value.

Description

technical field [0001] The present invention relates to injection molding machines. Background technique [0002] The injection molding machine includes an injection device for injecting molten resin into a mold device. The mold device is composed of a fixed mold and a movable mold, and a cavity space is formed between the fixed mold and the movable mold when the mold is closed. The injection device injects the molten resin in the cylinder from a nozzle provided at the front end of the cylinder, and fills the cavity space in the mold device. The resin cooled and solidified in the cavity space is taken out as a molded product after the mold is opened (for example, refer to Patent Document 1). [0003] Patent Document 1: International Publication No. 2005 / 068155 [0004] The density of the molten resin measured in the cylinder may fluctuate. Therefore, molding may become unstable and the quality of molded products may deteriorate. Contents of the invention [0005] The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/50B29C45/76B29C45/64
Inventor 德能龙一
Owner SUMITOMO HEAVY IND LTD
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