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Garbage can injection mold constant temperature control system and method

A technology for constant temperature control of injection molds, which is applied in the field of constant temperature control systems for trash can injection molds. It can solve the problems of cracking material properties of workpieces, affecting the quality of workpieces, and changes, so as to achieve stable temperature adjustment, precise temperature control, and prevention of cracking or material occurrence. effect of change

Pending Publication Date: 2022-08-09
ZHEJIANG KAIHUA MOLDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention mainly solves the problems in the prior art that the temperature control of the injection molding machine is unstable, which causes the cracking of the workpiece or the change of the material properties, which affects the quality of the workpiece, and provides a garbage can injection mold constant temperature control system and method

Method used

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  • Garbage can injection mold constant temperature control system and method

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Embodiment 1

[0034] In this embodiment, a constant temperature control system for an injection mold of a trash can, such as figure 1 As shown, the mold includes a cavity mold 1 and a core mold 2 that are joined together, and the system also includes a controller and a water temperature controller. The cavity mold and the core mold are evenly divided into several layers of temperature adjustment layers along the mold opening direction, which are located between the two dotted lines as shown in the figure, and only part of the temperature adjustment area is marked in the figure. The temperature adjustment layer can be physically separated or just divided. Physically, a partition is set between each temperature adjustment layer in the mold. Between the warm runners, the physical separation is used to reduce the temperature influence between the temperature control layers.

[0035] Each temperature adjustment layer includes an outer temperature adjustment flow channel 3 arranged around the ca...

Embodiment 2

[0039] In the present embodiment, a method for controlling the constant temperature of an injection mold for a trash can, such as figure 2 described, including the following steps:

[0040] Step 1. Set temperature monitoring parameters, including constant temperature, constant temperature interval, upper limit temperature and lower limit temperature, and evenly divide the mold into several temperature-adjusting layers including temperature-adjusting runners along the mold opening direction;

[0041] Step 2. Detecting the actual temperature in the mold in real time, according to the temperature difference between the actual temperature and the constant temperature, the first-stage temperature adjustment judgment is performed on each temperature adjustment layer, and the temperature is adjusted to the upper and lower limit temperatures; specifically including:

[0042] (2-1) Obtain the actual temperature of each temperature control layer, calculate the absolute value of the dif...

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Abstract

The invention discloses a garbage can injection mold constant temperature control system and method. The problems that in the prior art, temperature control of an injection molding machine is unstable, consequently, workpieces crack or materials are changed, and the quality of the workpieces is affected are solved. The mold comprises a cavity mold and a core mold, the system comprises a controller and a water temperature controller, the cavity mold and the core mold are evenly divided into a plurality of temperature adjusting layers, each temperature adjusting layer internally comprises an outer temperature adjusting flow channel arranged in the cavity mold and an inner temperature adjusting flow channel arranged in the core mold, and the inner temperature adjusting flow channels and the outer temperature adjusting flow channels are connected to the water temperature controller through water inlet pipelines. A plurality of temperature sensors are arranged on each temperature adjusting layer; in the temperature adjusting process, a first-stage temperature adjusting and step-by-step temperature adjusting combined mode is adopted, step-by-step temperature adjusting is adopted after the temperature is close to the constant temperature, in order to achieve accurate adjusting, the temperature is gradually close to the constant temperature in a step-shaped change mode, and temperature adjusting is more stable; and the problem that the injection molding part cracks or the material is changed due to sudden temperature change is solved.

Description

technical field [0001] The invention relates to the technical field of mold injection molding, in particular to a constant temperature control system and method for an injection mold of a trash can. Background technique [0002] Plastic trash cans are widely used in people's lives, and these plastic trash cans are generally made by injection molding using molds. In the injection molding process, mold temperature control is very important, and the mold and internal temperature need to be kept in a relatively stable range. At present, many injection molding machines have not done a good job in temperature control, and the temperature adjustment is not accurate enough, which is prone to sudden changes in temperature. As a result, the workpiece is cracked due to rapid temperature changes and the material properties are changed, which affects the quality of the workpiece. SUMMARY OF THE INVENTION [0003] The invention mainly solves the problem that the temperature control of ...

Claims

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Application Information

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IPC IPC(8): B29C45/78
CPCB29C45/78B29C2945/76531B29C2945/76732
Inventor 梁正华李茂明
Owner ZHEJIANG KAIHUA MOLDS
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