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Multipoint heating device of rotomoulding forming device

A technology of rotomoulding and heating devices, applied in the direction of coating, etc., can solve problems such as plane warping, deformation, and increased equipment investment

Inactive Publication Date: 2007-09-12
长春恒兴集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the traditional injection molding process is used for production, serious sink marks will occur in areas with uneven thickness, and defects such as warping and deformation will also occur on larger planes. At the same time, large-tonnage injection molding machines are required, which greatly increases the investment in equipment.

Method used

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  • Multipoint heating device of rotomoulding forming device

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Embodiment Construction

[0006] The technical design of the present invention is as follows: the three heating nozzles 6 of the multi-point heating device are respectively arranged on the front and left and right sides of the heating chamber, wherein the heating nozzles at the front are fixed, and the heating nozzles on the left and right sides are retractable. Type linkage mechanism to facilitate the opening and closing of the side door of the heating chamber; a fan is arranged above the heating chamber to control the flow direction of the heating gas in the heating chamber; the gas in the liquefied petroleum gas cylinder group 1 passes through the electromagnetic servo valve 3 of the pipeline, the flow The valve 5 is distributed to three heating nozzles 6 to realize the simultaneous heating of the molding mold in three directions. The infrared sensor 4 monitors the actual temperature of the molding mold. After the data acquisition circuit is introduced into the computer 2 for processing, the distribut...

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Abstract

The present invention relates to the application of automatic control technology, infrared remote sensing technology, computer communication technology, etc in rotational molding plastic product. The rotational molding apparatus includes optimized heating device, optimally designed fuel gas control system, etc. and the multiple point heating device and fuel gas flow control system consist of several heating nozzles, electromagnetic servo valve, flow control valve, infrared sensor, computer and other parts. The computerized fuel flow control system can monitor the temperature change inside the heating chamber of forming mold, cooperate the heating rates of the nozzles and realize closed-loop optimal control of the fuel gas flow rate to obtain high quality rotational molded plastic product.

Description

Technical field: [0001] The present invention relates to the application of automatic control, infrared remote sensing, computer communication and other technologies to realize the production of rotational molding of plastic products, that is, the production equipment of rotational molding technology, including the composition optimization design of the equipment heating device, the design of the flow regulation control system of heating gas, etc. , belongs to the technical field of plastic molding. Background technique: [0002] Due to the large size and complex shape of plastic parts of automobiles, especially heavy trucks, most of them are curved shells. When the traditional injection molding process is used for production, serious sink marks will occur in areas with uneven thickness, and defects such as warping and deformation will also occur on larger planes. At the same time, large-tonnage injection molding machines are required, which greatly increases the investment ...

Claims

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Application Information

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IPC IPC(8): B29C41/52B29C41/46B29C41/04
Inventor 范世永张伟邱红玉
Owner 长春恒兴集团有限公司
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