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injection molding machine

A technology for injection molding machines and molding materials, which is applied in the direction of program control, instruments, control/regulation systems, etc. It can solve the problems of pressure control stability reduction and achieve the effect of improving stability

Active Publication Date: 2019-05-17
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the pressure holding process, the stability of pressure control may decrease

Method used

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Embodiment Construction

[0018] Hereinafter, modes for implementing the present invention will be described with reference to the drawings, but in each of the drawings, the same or corresponding symbols are attached to the same or corresponding components, and descriptions thereof are omitted.

[0019] figure 1 It is a figure which shows the injection molding machine of one embodiment. The injection molding machine has a frame Fr, a mold clamping device 10 , an injection device 40 and a controller 90 .

[0020] First, the mold clamping device 10 will be described. In the description of the mold clamping device 10, the moving direction of the movable platen 13 during mold closing ( figure 1 The middle is the right direction) as the front, and the moving direction of the movable platen 13 when the mold is opened ( figure 1 The left direction in the middle) is described as the rear.

[0021] The mold clamping device 10 performs mold closing, mold clamping, and mold opening of the mold device 30 . Th...

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Abstract

An injection molding machine that improves the stability of pressure control in a holding pressure process is provided. The injection molding machine includes a cylinder that heats a molding material that fills the inside of a mold unit; an injection member that is disposed within the cylinder so as to be movable forward and backward; a driving source that moves the injection member forward and backward; and a controller that controls the driving source. The controller lowers a control gain used for the control of the driving source during in a holding pressure process when driving the driving source.

Description

technical field [0001] This application claims priority based on Japanese Patent Application No. 2015-131733 filed on June 30, 2015. The entire contents of this Japanese application are incorporated herein by reference. [0002] The invention relates to an injection molding machine. Background technique [0003] An injection molding machine includes, for example, a cylinder for heating a molding material filled in a mold device, a screw provided in the cylinder to be able to advance and retreat and to rotate freely, an injection motor to advance and retreat the screw, and a controller for controlling the injection motor ( For example, refer to Patent Document 1). The controller controls the injection motor, thereby performing the filling process and the pressure maintaining process. In the filling step, the screw is advanced at a set speed, thereby injecting the molding material accumulated in front of the screw from the cylinder, and filling it into the mold device. Nex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/03B29C45/77
CPCB29C45/03B29C45/77B29C2945/76498B29C2945/76006B29C2945/76384B29C2945/76501B29C2945/76862B29C2945/76936B29C2945/76956G05B6/02G05B2219/45244
Inventor 日置一弥
Owner SUMITOMO HEAVY IND LTD