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Injection molding machine

A technology for injection molding machines and molding materials, which is applied in the field of injection molding machines and can solve problems such as larger setting range, longer filling time, and time-consuming

Active Publication Date: 2016-05-04
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In particular, when the filling amount increases, such as when forming a thick-walled product, the filling time also becomes longer accordingly.
In this case, the setting range of the switching set pressure for switching from speed control to pressure control also becomes large, and it takes time to set the switching set pressure.

Method used

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Examples

Experimental program
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Embodiment Construction

[0023] Hereinafter, modes for implementing the present invention will be described with reference to the drawings, but the same or corresponding components will be assigned the same or corresponding symbols in each drawing, and description will be omitted.

[0024] figure 1 It is a diagram showing an injection molding machine according to one embodiment of the present invention. figure 1 The shown injection molding machine has a frame Fr, a mold clamping device 10, an injection device 40, a controller 70, and the like. The controller 70 has a storage medium 72 such as a CPU (Central Processing Unit) 71 and a memory. The controller 70 controls the mold clamping device 10 and the injection device 40 by causing the CPU 71 to execute the program stored in the storage medium 72 .

[0025] Next, 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 ...

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PUM

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Abstract

The invention provides an injection molding machine capable of enabling users to reduce time. The injection molding machine includes a cylinder that heats a molding material which is filled with the inside of a mold unit; a feeding member that feeds the molding material within the cylinder; a drive device that moves the feeding member forward and backward; a controller that carries out a filling process of driving the drive device to control the speed of the feeding member, and a hold pressure process of driving the drive device to control pressure acting on the molding material from the feeding member; and a detector that detects information on the pressure of the molding material. If the speed of the feeding member when moving forward is made positive and the speed of the feeding member when moving backward is made negative, the setting speed of the feeding member is reduced in the middle of the filling process. The controller performs switchover from the filling process to the hold pressure process on the basis of the amount of change of a detection value of the detector after the setting speed is reduced.

Description

[0001] This application claims priority based on Japanese Patent Application No. 2014-215727 filed on October 22, 2014. The entire contents of this Japanese application are incorporated herein by reference. technical field [0002] The invention relates to an injection molding machine. Background technique [0003] The injection molding machine includes an injection device for filling a molding material into a mold device, a controller for controlling the injection device, and the like. The injection device has, for example, a cylinder, a nozzle, a screw, and an injection motor. The cylinder heats the molding material. The nozzle is arranged at the front end of the cylinder and pressed against the mold device. The screw moves forward and backward freely in the cylinder, and the molding material in front of the screw is sent out from the cylinder. The injection motor advances and retreats the screw. The controller drives the injection motor to implement the filling proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/77
CPCB29C45/77B29C2045/776B29C2945/7601B29C2945/76287B29C2945/76404B29C2945/76933B29C2945/76943B29C2945/76006B29C2945/7611B29C2945/76498B29C2945/76595
Inventor 德能龙一
Owner SUMITOMO HEAVY IND LTD