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Bidirectional compensation control method for temperature and pressure of mold in injection molding process

A technology of two-way compensation and control method, applied in the field of mold temperature and pressure control, can solve the problem of not considering the temperature and pressure balance control of melt fluidity, and achieve the effect of ensuring utilization and cost control, improving efficiency, and controlling precision.

Pending Publication Date: 2022-07-12
ZHEJIANG KAIHUA MOLDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention mainly solves the problem of temperature and pressure balance control in the prior art without considering the fluidity of molten material; it provides a two-way compensation control method for mold temperature and pressure in the injection molding process, through compensation control of gate pressure and local temperature, to ensure different The fluidity of the molten material at the position meets the corresponding requirements, improving injection molding efficiency and energy utilization

Method used

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  • Bidirectional compensation control method for temperature and pressure of mold in injection molding process

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Embodiment 1

[0056] A bidirectional compensation control method for mold temperature and pressure in an injection molding process in this embodiment, such as figure 1 shown, including the following steps:

[0057]A bidirectional compensation control method for mold temperature and pressure in an injection molding process, comprising the following steps:

[0058] S1: From the cavity gate 3 as the starting point, it is divided into several detection areas to the end of the cavity.

[0059] The division process of the detection area is as follows:

[0060] Set a number of radii, take the cavity gate 3 as the center of the sphere, and determine the detection sphere respectively.

[0061] In this embodiment, as figure 2 As shown, the set radii expand sequentially, including the first radius r1, the second radius r2, the third radius r3...the nth radius rn, until the end of the cavity 1 is also included in the detection sphere. Each detection sphere is a concentric sphere with the same sphe...

Embodiment 2

[0101] A bidirectional compensation control method for mold temperature and pressure in an injection molding process of the present embodiment, further comprising:

[0102] S5: Transfer the injection-molded product to an incubator for a rated time.

[0103] The products after injection molding are kept warm in the incubator to reduce the time occupied by the injection mold and improve the injection efficiency. Avoid the deformation of the product due to the rapid cooling during the cooling process.

[0104] A heat preservation water circuit is arranged outside the heat preservation box, and the heat preservation water way is filled with the outlet water of the cooling water circuit. Make full use of the cooling water in the cooling water circuit, use the cooling water circuit that has been heated up after use for heat preservation, make full use of resources and reduce energy consumption.

[0105] The method of this implementation also includes the heat preservation process ...

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Abstract

The invention discloses a bidirectional compensation control method for temperature and pressure of a mold in an injection molding process. The problem that in the prior art, it is not considered that temperature and pressure balance control is conducted while melt flowability is guaranteed is solved. The method comprises the following steps: S1, taking a cavity sprue as a starting point, and dividing into a plurality of detection areas from the tail end of a cavity; s2, in the injection molding process, the pressure, the temperature and the melt flow speed of each detection area are monitored in real time; the flowing position and the flowing speed of the melt in the cavity are compared with a preset flowing speed threshold value to evaluate the fluidity of the melt; s3, according to the evaluated fluidity and the pressure and temperature data obtained in the detection area where the position is located, pressure subsection control or temperature local control is executed, and the melt flow speed is adjusted; and S4, the mold injection molding process is completed. Through the compensation control of the sprue pressure and the local temperature, the flowability of melt at different positions meets corresponding requirements, and the injection molding efficiency and the energy utilization rate are improved.

Description

technical field [0001] The invention relates to the field of mold temperature and pressure control, in particular to a bidirectional compensation control method for mold temperature and pressure in an injection molding process. Background technique [0002] Injection molds are used for injection molding. Injection molding, also known as injection molding, is a molding method of injection and molding. The advantages of the injection molding method are that the production speed is fast, the efficiency is high, the operation can be automated, there are many varieties of colors, the shape can be from simple to complex, the size can be from large to small, and the size of the product is accurate, the product is easy to replace, and it can be formed into complex shapes. Parts, injection molding is suitable for mass production and complex shape products and other molding processing fields. [0003] The temperature and pressure required in the injection molding process are factors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/77B29C45/78B29C45/17
CPCB29C45/77B29C45/78B29C45/1769B29C2945/76531B29C2945/76595B29C2945/76732
Inventor 梁正华李茂明
Owner ZHEJIANG KAIHUA MOLDS
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