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Device and method for welding plastic materials in laser transmission manner

A technology of laser transmission welding and plastic materials, applied in the field of laser welding, can solve problems such as secondary polymerization of unfavorable plastic materials, loss of plastic melt, no welding device, etc., to ensure accuracy and repeatability, and ensure welding strength. , to ensure the effect of welding quality

Active Publication Date: 2013-03-20
光机电(广州)科技研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the actual plastic laser welding process, the contact surfaces of the plastic parts that need to be welded together are not absolutely flat, so in order to ensure the maximum welding area, it is usually necessary to apply a certain pressure to the welded parts, but the pressure is not too high. The bigger the better, excessive pressure will cause the loss of plastic melt, which is not conducive to the secondary polymerization between plastic materials and affect the welding strength
Due to the different melting points of different plastic materials, the fluidity in the molten state is also different, so the pressure required for the sample during laser transmission welding is also different, which makes the welding device with adjustable pressure function indispensable, but there is no such thing at present. Aspect welding device

Method used

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  • Device and method for welding plastic materials in laser transmission manner
  • Device and method for welding plastic materials in laser transmission manner

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] like figure 1As shown, the welding device used for laser transmission welding of plastic materials includes a support plate 4, a laser light source, and a pressure adjustment mechanism. The pressure adjustment mechanism includes a pressing plate mechanism, a guide rail 5 and a driving mechanism. The pressing plate mechanism and the driving mechanism connected, and connected with the support plate 4 through the guide rail 5; the platen mechanism is provided with a light-transmitting window 2 composed of a light-transmitting window and a light-transmitting window that is highly transparent to infrared lasers; the welded plastic material 6 is placed on the support plate 4, and correspondingly arranged below the light-transmitting window 2; the laser light source connects the light-transmitting window 2 and the welded plastic material 6 sequentially through the laser beam 1, that is, the laser beam 1 passes through the light-transmitting window 2, and the effect For welded ...

Embodiment 2

[0053] This embodiment has the same structural features as Embodiment 1 except for the following features: the laser beam 1 is a near-infrared semiconductor laser beam with a wavelength of 1064nm.

Embodiment 3

[0055] This embodiment has the same structural features as Embodiment 1 except for the following features: the laser beam 1 is a near-infrared semiconductor laser beam in the 980nm band.

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PUM

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Abstract

The invention provides a device for welding plastic materials in a laser transmission manner. The device comprises a supporting plate, a laser light source and a pressure regulating mechanism, wherein the pressure regulating mechanism comprises a pressing plate mechanism, a supporting plate, a guide rail and a drive mechanism; the pressing plate mechanism is connected with the drive mechanism and is connected with the supporting plate through the guide rail; the pressing plate mechanism is provided with a light-transmitting window consisting of a light-transmitting window opening and a light-transmitting window body; plastic materials to be welded are positioned on the supporting plate and correspondingly arranged below the light-transmitting window; and the laser light source is sequentially connected with the light-transmitting window and the plastic materials to be welded through laser beams. The invention also provides a welding method realized by the device. According to the invention, the plastic materials to be welded are under proper pressure, and further generate secondary polarization to be combined together, thus welding quality and welding strength are ensured.

Description

technical field [0001] The invention relates to the technical field of laser welding, in particular to a welding device and a welding method for laser transmission welding of plastic materials, which adopt the principle of transmission welding to perform laser welding on plastic materials. Background technique [0002] Plastic materials, as an important part of polymer materials, have unique structures and excellent performance, and are widely used in various fields of science and technology, national defense construction and national economy. Plastic, steel, wood, and cement are listed as the four pillar materials. Substituting plastic for steel and plastic for wood is the future development direction of our country, which also provides opportunities and markets for high-tech plastic processing methods. [0003] As a high-tech processing technology with distinctive characteristics, laser welding technology is widely used in the field of welding processing of metal materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C65/16
CPCB29C65/1616B29C65/1635B29C66/1122B29C66/41B29C66/45B29C66/73921B29C66/81267B29C66/8242B29C66/8322B29C66/92211B29C66/9241B29C66/9674B29K2995/0027
Inventor 庞振华宋杰赵博梁锡辉
Owner 光机电(广州)科技研究院有限公司