Ultrasonic welding quality control method and application thereof in automatic production line

A quality control method, ultrasonic welding technology, applied in automated production lines, in the field of ultrasonic welding quality control, can solve the problems of increasing the initial cost and maintenance cost of equipment, cumbersome height adjustment process, pressure sensor, position sensor, etc., to achieve welding The effect of quality inspection, simple implementation method and low maintenance cost

Pending Publication Date: 2022-03-11
JITRI INST OF PRECISION MFG +1
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on the change of the elastic modulus of the material, the researchers tried to judge the welding quality by the pressure between the welding head and the mold. However, this welding quality judgment method requires a cumbersome height adjustment process, pressure sensors, an

Method used

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  • Ultrasonic welding quality control method and application thereof in automatic production line
  • Ultrasonic welding quality control method and application thereof in automatic production line
  • Ultrasonic welding quality control method and application thereof in automatic production line

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Embodiment Construction

[0023] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

[0024] The invention provides an ultrasonic welding quality control method, which is used for ultrasonic welding of composite materials composed of foaming materials and non-woven materials.

[0025] The welding system and process are as follows: the mold and the welding head are placed on both sides of the composite material composed of foam material and non-woven material, and the welding head and the mold press the welded composite material through the actuator. The conversion to material heat causes the composite material to melt.

[0026] The quality control method is: obtain the sound signal during the melting process of the composite material, judge the melting state of the foam material and the non-woven fabric according to the sound signal, and identify the welding quality composed of the foam material and the non-woven fabric: w...

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Abstract

The invention discloses an ultrasonic welding quality control method and application of the ultrasonic welding quality control method in an automatic production line, and the method comprises the steps that sound signals in the composite material melting process are obtained, and the melting state of a foaming material and non-woven fabric is judged according to the sound signals; when the amplitude-frequency curve characteristic of the sound signal is that the sound loudness is lower than the fusion welding state, and the frequency is concentrated on the vibration frequency of an ultrasonic generator, the foam material and the non-woven fabric are not subjected to fusion welding; and when the amplitude-frequency curve characteristic of the sound signal is that the sound loudness is improved compared with the sound loudness in a non-fusion welding state and a plurality of regular peak values appear when the frequency is lower than the ultrasonic vibration frequency, the foam material and the non-woven fabric are subjected to fusion welding. The ultrasonic welding quality control method can also be integrated in an automatic production line and is used for controlling start and stop of the automatic production line and monitoring the stability of welding quality. The method has the advantages of being simple in implementation method, high in recognition rate, low in equipment cost, low in maintenance cost and the like.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic welding and relates to a quality control method, in particular to an ultrasonic welding quality control method and its application in an automatic production line. Background technique [0002] The foam material has the characteristics of light weight, high elasticity, vibration absorption, high specific strength, and heat preservation. The non-woven fabric has the characteristics of softness and skin-friendly. The composite material composed of these two materials has the characteristics of both, and is widely used. Used in clothing, packaging, sports and leisure industries. [0003] At present, ultrasonic technology is widely used in the welding of various materials. The welding principle is to use ultrasonic transducers to convert electrical energy into mechanical energy, and then use the horn to transmit the mechanical energy vibration energy to the welding head. , The welding head is atta...

Claims

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Application Information

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IPC IPC(8): B29C65/08
CPCB29C65/08
Inventor 杨浩骏陈玉荣苏宏华刘翔
Owner JITRI INST OF PRECISION MFG
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