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Injection molding machine

A technology for injection molding machines and moving parts, applied in the field of injection molding machines, can solve problems such as magnetic flux leakage, and achieve the effect of preventing dumping and magnetic flux leakage

Inactive Publication Date: 2015-05-20
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this structure, magnetic flux leakage from the movable part towards the center rod becomes a problem

Method used

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  • Injection molding machine
  • Injection molding machine
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Experimental program
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Embodiment Construction

[0017] Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. In this embodiment, the mold clamping device assumes the moving direction of the movable platen at the time of mold closing as the front, and the direction of movement of the movable platen at the time of mold opening as the rear, and the injection device as follows: The moving direction of the screw at the time of injection is set as the front, and the moving direction of the screw at the time of metering is set as the rear.

[0018] figure 1 It is a figure showing the state when the clamping device in the injection molding machine according to the embodiment of the present invention closes the mold, figure 2 It is a figure which shows the state at the time of mold opening of the clamping device in the injection molding machine concerning embodiment of this invention. In addition, in figure 1 and figure 2 In , the hatched parts represent the main se...

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PUM

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Abstract

PURPOSE: An injection molding machine is provided to prevent a magnetic leakage to a center rod by reducing a contact area of a suction plate and the center rod. CONSTITUTION: An injection molding machine comprises a first fixing member, a second fixing member, a first movable member, and a second movable member. The second movable member includes a penetration hole to which a center rod(39) penetrates. A periphery wall of the penetration hole(90) comprises a contact unit(22a) coming into contact with the center rod and a noncontact unit(22b) separated from the center rod. The second movable member is supported in the contact unit, and a contact area is reduced by the noncontact unit.

Description

technical field [0001] The present invention relates to an injection molding machine equipped with an electromagnet for driving mold clamping operation. Background technique [0002] Conventionally, in an injection molding machine, a resin is injected from an injection nozzle of an injection device, filled into a cavity space between a fixed mold and a movable mold, and cured to obtain a molded product. Furthermore, a mold clamping device is arranged for closing, clamping and opening the mold by moving the movable mold relative to the fixed mold. [0003] The mold clamping device has a hydraulic mold clamping device driven by supplying oil to a hydraulic cylinder and an electric mold clamping device driven by an electric motor. The electric mold clamping device has high controllability, does not pollute the surrounding area, and is energy efficient. High, so it is widely used. At this time, by driving the motor to rotate the ball screw to generate a thrust force, the toggl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/03B29C45/64
CPCB29C45/1761B29C45/64B29C2045/645
Inventor 田村惇朗森谷知宽柴田达也
Owner SUMITOMO HEAVY IND LTD