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Temperature control device for plastic injection mould

A technology of temperature control device and injection mold, which is applied in the field of plastic injection molding technology, can solve the problems of high cost and low reliability, and achieve the effect of low manufacturing cost, high reliability and wide temperature range

Inactive Publication Date: 2013-07-03
INST OF INFORMATION TECH OF GUET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The circulation, disconnection and flow rate of the cooling water flow are controlled by a series of complex electronic components such as temperature sensors, single-chip microcomputers, and solenoid valves in the prior art. This method has the disadvantages of high cost and low reliability.

Method used

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  • Temperature control device for plastic injection mould
  • Temperature control device for plastic injection mould
  • Temperature control device for plastic injection mould

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] refer to figure 1 , figure 2 , image 3 , a temperature control device for plastic injection molds, mainly composed of a flow adjustment unit and a drive unit, the flow adjustment unit includes a three-way mechanism composed of a valve body 1 and a valve core 2, the first outlet 13 in the three-way mechanism The size of the opening of the second outlet 14 is controlled by the rotation angle of the valve core 2 and is inversely proportional to each other. The adjustment end of the valve core 2 is equipped with a gear 4; the drive unit includes a cylinder 10 with a heat conductor 12, and the opening of the cylinder 10 The end is equipped with a rack piston 8; the rack on the rack piston 8 meshes with the gear 4.

[0023] The drive unit also includes a limiting plate 5 , an adjusting cylinder 6 and a spring 7 , one end of the spring 7 is connected to the rack piston 8 , and the other end is arranged in the adjusting cylinder 6 , and the adjusting cylinder 6 is screwed t...

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PUM

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Abstract

The invention discloses a temperature control device for a plastic injection module, and is characterized in that the temperature control device is mainly composed of a flow adjusting unit and a driving unit; the flow adjusting unit comprises a tee joint mechanism consisting of a valve body and a valve plug, the sizes of openings at two outlets of the tee joint mechanism are in an inverse proportion relation under the control of a rotating angle of the valve plug, and an adjusting end of the valve plug is equipped with a gear; the driving unit comprises a cylinder with a heat conductor, an opening end of the cylinder is equipped with a rack piston, and the rack on the rack piston is engaged with the gear. The temperature control device has the advantages of simple structure, low cost, full mechanical structure without any electron component, high reliability and convenient mounting, use and maintenance.

Description

technical field [0001] The invention relates to a plastic injection molding process, in particular to a temperature control device for a plastic injection mold. Background technique [0002] Plastic injection mold or plastic injection mold is one of the key equipment for plastic molding. Due to its continuous absorption of heat from the plastic melt during the production process, the temperature continues to rise, and the excessively high temperature in the mold will cause the product to fail to shape. However, if the temperature in the mold is too low, defects such as insufficient melt filling and excessive flow lines on the surface of the product will occur. Therefore, to ensure the smooth progress of injection molding, appropriate methods and devices must be used to control the temperature of the mold within a certain range. For example, when polyvinyl chloride plastic is injection molded, the surface temperature of the mold is usually controlled between 55 and 65°C. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/78
Inventor 刘朝福杨连发
Owner INST OF INFORMATION TECH OF GUET