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injection molding machine

A technology for injection molding machines and molding materials, applied in the field of injection molding machines, can solve problems such as large filling volume deviations and large quality deviations of molded products, and achieve the effect of reducing quality deviations

Active Publication Date: 2018-03-09
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At the time of switching between the filling process and the pressure holding process, there is a large variation in the filling amount per injection, and the quality variation of the molded product is also large

Method used

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Embodiment Construction

[0013] Hereinafter, the manners for implementing the present invention will be described with reference to the accompanying drawings. The same or corresponding structures are denoted by the same or corresponding symbols in the respective drawings, and the description will be omitted.

[0014] figure 1 This is a diagram showing an injection molding machine according to an embodiment of the present invention. figure 1 The middle arrow F indicates the flow of the molding material. figure 1 The illustrated 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 CPU (Central Processing Unit) 71 and a storage medium 72 such as a memory. The controller 70 causes the CPU 71 to execute a program stored in the storage medium 72 to thereby control the mold clamping device 10 and the injection device 40.

[0015] Next, the mold clamping device 10 will be described. In the description of the mold clampi...

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Abstract

The present invention provides an injection molding machine that reduces quality variation of molded products. The injection molding machine of the present invention includes: a cylinder for heating the molding material filled into the mold device; a delivery member for sending out the molding material in the cylinder; a driving device for advancing and retreating the delivery member; and a controller for The filling process of controlling the speed of the delivery member and the pressure holding process of controlling the pressure acting on the molding material from the delivery member are carried out by driving the driving device. A detection result of the detector that the molding material has reached a predetermined position is switched from the filling step to the pressure holding step.

Description

Technical field [0001] This application claims priority based on Japanese Patent Application No. 2014-247245 filed on December 5, 2014. The entire contents of this Japanese application are incorporated in this specification by reference. [0002] The invention relates to an injection molding machine. Background technique [0003] The injection molding machine has an injection device that fills the mold device with a molding material, a controller that controls 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 advances and retracts 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 perform a filling process tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/03B29C45/80B29C45/66B29C45/77
CPCB29C45/76B29C45/77B29C2045/776B29C2945/76006B29C2945/7604B29C2945/76404B29C2945/76735B29C2945/76882B29C2945/76933B29C2945/76946
Inventor 铃木基文
Owner SUMITOMO HEAVY IND LTD
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