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Mold heating and cooling rod and mold capable of realizing rapid cooling and rapid heating

A mold heating and cooling rod technology, which is applied in the field of mold heating and cooling rods and molds that can realize rapid cooling and rapid heating, can solve the problems of flow marks, shrinkage, surface foaming, etc., and achieve improved fluidity, reduced pressure, Good heat insulation effect

Inactive Publication Date: 2010-04-28
杨东佐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The second object of the present invention is to provide a mold that is easy to realize rapid heating and uniform heating, rapid cooling and uniform cooling of the mold core that is provided with a molding surface, and can realize rapid cooling and rapid heating, so as to solve the problem of weld lines, weld lines, etc. Problems with major defects such as flow marks, uneven gloss, uneven product density, surface blistering, shrinkage, the need for high injection pressure, and product deformation due to residual stress after the molten material is solidified and molded

Method used

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  • Mold heating and cooling rod and mold capable of realizing rapid cooling and rapid heating
  • Mold heating and cooling rod and mold capable of realizing rapid cooling and rapid heating
  • Mold heating and cooling rod and mold capable of realizing rapid cooling and rapid heating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Such as figure 1 As shown, a mold that can realize rapid cooling and rapid heating includes a control unit electrically connected to the injection molding machine, a water pump electrically connected to the control unit, a heating element, a temperature sensor, an electric control water valve, an electric control air valve, and an electric control unit. The control air valve is connected to the pressure regulating filter and the water / air pipe connection joint through the air pipe, and the electric control water valve is connected to the water pump and the water / air pipe connection joint through the water pipe. The water / air pipe connection joint is installed in the cooling heat insulation hole and the heat insulation cooling hole and communicate with the cooling heat insulation hole and the heat insulation cooling hole; the pressure regulating filter is connected with the compressed air pump through the air pipe. The mold temperature when heating the cooling rod and t...

Embodiment 2

[0067] Such as Figure 5 As shown, different from Embodiment 1, the heating and cooling rod body 31 is cylindrical, the section of the heating element accommodation hole 32 is a sector with a central angle less than 180°, and the section of the cooling and heat insulation hole 33 is a sector with a central angle greater than 180° , the cooling and heat insulation hole 33 surrounds the heating element accommodating hole 32 from three directions. The temperature sensor 34 is arranged at one end of the heating and cooling rod body 31 and extends into the heating and cooling rod body 31 .

Embodiment 3

[0069] Such as Figure 6 As shown, the difference from Embodiment 1 is that the heating and cooling rod body 41 is cylindrical, the section of the heating element accommodation hole 42 is similar to a semicircle, the section of the cooling and heat insulation hole 43 is similar to a semicircle, and the cross section of the cooling and heat insulation hole greater than the cross-section of the heating element.

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Abstract

The invention relates to a mold heating and cooling rod which comprises a heating and cooling rod body and a heating element, a cooling thermal insulation hole for introducing a cooling medium when a mold needs to be cooled and discharging the cooling medium when the mold needs to be heated and a heating element accommodating hole are arranged in the heating and cooling rod body along the axial direction, and the heating element is mounted in the heating element accommodating hole; the mold capable of realizing rapid cooling and rapid heating comprises a mold core and the heating and cooling rod, and the heating and cooling rod is in contact with the mold core; and one side of the heating and cooling rod which is provided with the heating element is near to a molding surface of the mold core. The advantages are that, as the molding surface can be rapidly and evenly heated and cooled and rapidly heated to the temperature which is near to or equal to that of melting materials, a molded product has the advantages of good quality, difficult production of weld marks, flow marks, surface bubbles and the like, even color and luster, even density of the product, small shrinkage and ability of reducing the injection pressure and the product deformation caused by residual stress after consolidating and molding the molten materials.

Description

technical field [0001] The invention relates to a mold heating and cooling rod for heating and cooling a mold and a mold capable of realizing rapid cooling and rapid heating, in particular to a mold heating and cooling rod on a molding machine such as injection or die-casting and a mold capable of rapid cooling and rapid heating mold. Background technique [0002] The injection molding method of plastic or metal refers to injecting molten plastic or metal into the molding cavity of the mold, and obtaining a product consistent with the cavity after cooling and molding. In the injection molding process, a heating and cooling device that can realize rapid cooling and heating of the mold is required to control the temperature of the mold. [0003] The existing heating rod can only provide heating function, such as electric heating rod, when the mold needs to be heated, the electric heating rod does not have the function of heat insulation. Rapid and uniform heating; when cooli...

Claims

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Application Information

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IPC IPC(8): B29C33/02B29C33/04B29C45/73B29C45/26B29C45/78B22D17/20B22D17/22B22D17/32
CPCB29C45/73B29C33/04B29C2045/7393
Inventor 杨东佐
Owner 杨东佐
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