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Method of welding hot plate for proportional valve control

A technology of hot plate welding and proportional valve, which is applied in the field of proportional valve control hot plate welding to achieve good welding effect.

Active Publication Date: 2015-05-20
佩斯科(东莞)机械设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And prior art lacks the technology that pressure is carried out automatic control

Method used

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Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention is further described in conjunction with the following examples.

[0016] A specific embodiment of the method for controlling hot plate welding by a proportional valve of the present invention, comprising steps:

[0017] A. Start the proportional valve to control the heating pressure of the parts and the oil tank respectively. When the heating is over, judge whether the heating pressure signal and the heating depth signal are within the preset range. If not, stop working and give an alarm. If yes, go to the next step ;

[0018] B. Start the proportional valve to control the hot-melt pressure of the parts and the fuel tank respectively. When the hot-melt ends, judge whether the hot-melt pressure signal and the hot-melt depth signal are within the preset range. If not, stop working and give an alarm. If so, then Proceed to the next step.

[0019] C. Start the moving device to move the parts to the welding position, start the proportional valve to c...

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Abstract

The invention relates to the technical field of a hot plate welding method, in particular to a method of welding a hot plate for proportional valve control. A valve opening of a proportional valve control cylinder is respectively started during a heating stage, a hot melting stage and a welding stage, so as to control the pressure between parts and a heating plate, the pressure between an oil tank and the heating plate or the pressure between the parts and the oil tank, the heating phase, the hot melting phase and the welding phase are simultaneously timed according to preset data, the completion of every timing processing indicates the completion of one stage, the current pressure and depth are detected again after the completion of one stage, and detection data and the preset data are compared. If the detection data are within the preset range, judgment can be made that the operation of the stage is normal, and next stage of operations can be started. Otherwise, judgment can be made that the pressure control is improper, then the operation is stopped, and alarming is performed, so as to further control the proportional valve to regulate the pressure and achieve good welding effects during the welding process.

Description

technical field [0001] The invention relates to the technical field of hot plate welding methods, in particular to a method for controlling hot plate welding by a proportional valve. Background technique [0002] Automobile fuel tanks include a box body and a cover body. During the production process, it is often necessary to weld the cover body or the box body with plastic parts. [0003] Plastic welding generally uses pressure to make melt plastic macromolecules diffuse and tightly bond together plastic connections. In the whole welding process, it is generally necessary to heat the fuel tank and the plastic parts separately, heat-melt them, and then carry out welding, heating, and heat-melting are generally realized through a heating plate, and welding needs to provide a certain pressure between the two. At this stage Equipment exists to automate these three steps. [0004] However, in the three stages of heating, heat fusion and welding, pressure control is extremely ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C65/02
Inventor 吕惠卿
Owner 佩斯科(东莞)机械设备有限公司