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Instant heating/cooling device for injection mold and mold temperature control method thereof

A technology of instant heating and injection mold, applied in the control field of controlling the temperature of the mold, can solve the problems of poor mold temperature uniformity, larger temperature control machine, affecting production efficiency, etc., to improve the yield rate, simplify the template, improve the The effect of production efficiency

Active Publication Date: 2008-08-27
哈希斯热流道科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to form or store high-temperature water, it is necessary to set up a heating tank and other equipment, so that the volume of the entire temperature control machine becomes larger. At the same time, since the high-temperature water is heated outside the mold and then passed into the mold, the heat energy will be absorbed during transmission. The loss reduces the thermal conductivity, affects the production efficiency, and the uniformity of the mold temperature is also poor

Method used

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  • Instant heating/cooling device for injection mold and mold temperature control method thereof
  • Instant heating/cooling device for injection mold and mold temperature control method thereof
  • Instant heating/cooling device for injection mold and mold temperature control method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Embodiment one: see Fig. 1 to Figure 5 As shown, an instantaneous heating / cooling device for an injection mold includes a template 20, the template 20 is provided with a cavity 24, and the template 20 is provided with 5 circulating water circuits 50, which are respectively connected to the cooling water circuit 8 The inlet 40, the channels arranged around the cavity 24 and the outlet 42 connected to the cooling water circuit 8 are composed of 3 (or 4) channels connected to the circulating water circuit 50 corresponding to each channel of the circulating water circuit 50. In the joint hole 22 between the inlet 40 and the outlet 42, a heating rod 30 is inserted in each joint hole 22, and there is a gap between the heating part 32 at the inner end of the heating rod 30 and the wall of the joint hole for cooling water or the heated part 32 The saturated water vapor transformed by heating passes through, and the outer end is connected to the power supply through the heating...

Embodiment 2

[0043] Embodiment two: see Image 6 , 7 As shown, an instantaneous heating / cooling device for an injection mold, in this embodiment, its structure is similar to Embodiment 1, the difference is that: the outer edge of the heating rod 30 is spirally wound with a heat transfer plate along the length direction 60. The heat transfer plate 60 is in close contact with the inner wall of the coupling hole 22 for heat transfer between the heating part 32 of the heating rod 30 and the inner wall. The heat transfer plate 60 has a certain thickness and width, and is made of a material with a high heat transfer rate. Made, so that the heat generated by the heating part can be more effectively transferred to the inner wall of the bonding hole, and the heating template 20 can be heated more quickly.

Embodiment 3

[0044] Embodiment three: see Figure 8 , 9 As shown, an instantaneous heating / cooling device for an injection mold, in this embodiment, its structure is similar to that of Embodiment 1, the difference is that: the outer edge of the heating rod 30 is evenly distributed with a plurality of 32 a heat transfer plate 60 extending in the length direction, the heat transfer plate 60 is in close contact with the inner wall of the coupling hole 22 for heat transfer between the heating rod 30 and the inner wall, the heat transfer plate 60 has a certain thickness and width, and adopts heat transfer Made of high-efficiency materials, the distance between adjacent plates can be adjusted according to the needs of heat conduction, and the number of heat transfer plates can be increased or decreased.

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Abstract

The invention discloses an instant heating / cooling device of an injection mould, which comprises a molding board, wherein a mould cavity is provided on the molding board, and at least a circulating water loop is arranged in the molding board. The invention is characterized in that a plurality of combined holes which are respectively communicated with the inlet and the outlet of the circulating water loop are distributed correspondingly at each channel of the circulating water loop, a heating rod is inserted in each combined hole, and a clearance is reserved between the heating part at the inner end of the heating rod and the wall of the combined hole, and is used for cooling water or moist steam which is heated to change by the heated part to pass through; the mould with the device adopts the temperature control method that the reference temperature is set in advance, and the power on-off of the heating rod can be controlled in time according to the temperatures which are detected by temperature sensors around the mould, so as to control the temperature of the molding board in real time. The heating rod of the invention is positioned in the molding board, thereby realizing the direct heating to the mould cavity, avoiding the loss of the heat transmission, and enhancing the heat transfer efficiency. Meanwhile the water and moist steam are used as heat conducting mediums, so that the uniformity of heat conduction is enhanced.

Description

technical field [0001] The invention relates to an injection mold, in particular to an injection mold with the function of instantaneous heating or cooling to a certain temperature, and a control method for controlling the temperature of the mold. Background technique [0002] Before injection molding starts, the mold needs to be preheated to improve the quality of injection molding products. However, if the mold is preheated, there will often be temperature unevenness, or over-preheating, insufficient preheating, etc. These temperature control problems will cause spots, paste spots, orange peel lines, flow marks and other undesirable phenomena on the surface of the injection molded product. , directly affects the quality of the finished product, therefore, a mold temperature controller is usually required to control the temperature of the mold. [0003] At present, the mold temperature control machine is generally composed of two parts: a heat conduction device and a cooli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/73B29C45/78
Inventor 许南旭
Owner 哈希斯热流道科技(苏州)有限公司
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