Injection control system for injection molding machine and control method

A technology of control system and control method, applied in the field of injection control system of injection molding machine, can solve the problems of easy curing of plastics, affecting the quality of injection molded parts, and low accuracy in judging the filling degree of the cavity, so as to increase the thermal conductivity rate and thermal conductivity, The effect of improving injection quality and increasing mixing speed

Inactive Publication Date: 2018-10-09
琮伟机械(昆山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the plastic in the cold material well in the prior art is easy to solidify when the injection molding machine is injected, which affects the quality of the injection molded parts and the low accuracy rate of judgment of the filling degree of the cavity, which affects the quality of the injection molded parts

Method used

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  • Injection control system for injection molding machine and control method
  • Injection control system for injection molding machine and control method
  • Injection control system for injection molding machine and control method

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Embodiment 1

[0039] In order to solve the problems existing in the prior art, the present invention provides an injection control system for an injection molding machine, specifically, refer to figure 1 , figure 2 with image 3 , the injection control system for an injection molding machine includes:

[0040] Plasticizing device 1, screw driving device 7, injection device and nozzle pressure detection device (not shown in the figure), described plasticizing device 1 comprises screw rod 11 and barrel 12, and described screw rod 11 is arranged on described barrel 12 Inside, the barrel 12 is a hollow structure, and a heating coil 121 is arranged in the hollow structure. It can be understood that, by setting the heating coil 121 in the hollow structure of the barrel 12, it can be ensured that the raw material The heat is uniform, and the density of injection molding will not decrease due to the loss of part of the heat during processing.

[0041] The screw driving device 7 provides driving...

Embodiment 2

[0056] This embodiment relates to an injection control method for an injection molding machine. Specifically, refer to Figure 4 , the method includes the steps of:

[0057] S1. Determine whether the current running speed v of the screw 11 is within the range of the preset running speed v', if not, send an alarm; if so, execute step S2,

[0058] S2. The control screw 11 runs at the current running speed v for a preset time T,

[0059] S3. Determine whether the travel distance s of the screw 11 within the preset time T is within the preset travel distance s', if so, execute step S4,

[0060] S4. Determine whether the pressure change Δp of the nozzle 3 within the preset time T is within the range of the preset pressure change Δp', if so, enter the pressure maintaining stage, otherwise send out an alarm.

[0061] Further, the preset operating speed v', the preset travel distance s' of the screw 11 and the preset pressure variation Δp' of the nozzle are preset according to the p...

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Abstract

The invention relates to the technical field of injection molding machines, in particular to an injection control system for an injection molding machine. The system comprises a plasticization device,a screw rod driving device, an injection device and a spray nozzle pressure detection device, wherein the plasticization device comprises a screw rod and a material tube; the screw rod is arranged inthe material tube; the material tube is of a hollow structure; a heating coil is arranged in the hollow structure; the screw rod driving device provides driving power for the screw rod; the injectiondevice comprises a spray nozzle; the spray nozzle comprises a connecting part and a built-in part; the connecting part is connected with the material tube; the built-in part extends into a main flowpassage of a mold; the main flow passage and the mold are connected through a spring; the main flow passage moves along with the spray nozzle; the spray nozzle is used for spraying melt into a mold cavity; the spray nozzle pressure detection device is used for detecting the spray nozzle pressure change. The injection control system has the advantages that the structure is simple; a main flow passage cup moves along with the spray nozzle; the problem of influencing injection molding quality due to plastic curing in a cold material well can be solved.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to an injection control system and method of an injection molding machine. Background technique [0002] Injection molding, also known as injection molding, is the main method of thermoplastic molding. The basic principle is to use the extrudability and moldability of plastics to add granular or powdered plastics to the hopper of the injection molding machine. In the injection molding machine, the plastics are heated and melted to keep them flowing. Driven by high pressure, it is quickly injected into a closed mold with a lower temperature through the nozzle at the front of the barrel. After cooling and shaping, the molten plastic solidifies into the required plastic part. [0003] In the injection molding process of the prior art, there are many factors that affect the injection molding quality. For example, the mixing speed and mixing volume of the injection molding mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/20B29C45/60B29C45/74B29C45/77
CPCB29C45/20B29C45/60B29C45/74B29C45/77B29C2945/76006B29C2945/7611
Inventor 宇汝宏邹长波
Owner 琮伟机械(昆山)有限公司
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