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Laser butt welding device and method for transparent plastic

A technology of transparent plastic and transparent plastic plate, applied in the field of plastic laser welding and laser butt welding of transparent plastic, to achieve the effect of beautiful welding seam, high welding efficiency and high welding strength

Pending Publication Date: 2020-11-03
宁波华焯激光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a laser butt welding of transparent plastics that does not apply absorbent, has high welding efficiency, high welding strength, beautiful weld seams, clean and environmental protection, and meets the needs of transparent plastic butt welding in high-demand fields such as food and medical treatment. Device and method thereof to overcome deficiencies in the prior art

Method used

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  • Laser butt welding device and method for transparent plastic
  • Laser butt welding device and method for transparent plastic
  • Laser butt welding device and method for transparent plastic

Examples

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Effect test

no. 1 example

[0035] see figure 1 , a laser butt welding device for transparent plastics, comprising a laser 1 and a workbench 7, a motion platform 8 is provided on the workbench 7, and a fixture assembly 10 for clamping two butt-welded transparent plastic plates 6, two A heat sink 5 is arranged above the butt-welding transparent plastic plate 6, and the heat-radiating fin 5 covers at least the butt joint parts of two butt-welding transparent plastic plates 6, and the motion platform 8 is provided with a welding head assembly 9, which includes two welding heads 3 , the two welding heads 3 are connected to the laser 1 through the optical fiber 2, the laser beam emitted by the laser 1 is transmitted through the optical fiber 2 and passes through the two welding heads 3 respectively, and there is an angle A between the two welding heads 3, so that the laser beam passing through the two The relative angles of the two laser beams of each welding head 3 are 60° to 90°, and the focal points of the...

no. 2 example

[0061] A transparent plastic laser butt welding device is different from the first embodiment in that: more than one cylinder is provided on the supporting plate 21, and an elastic member 20 is arranged on the piston rod of the cylinder. The material of the elastic member 20 is rubber, and the cylinder’s The piston rod drives the elastic member 20 to move toward the outside of the transparent plastic plate 6, and the transparent plastic plate 6 and the elastic member 20 are in contact with each other to achieve a pressing effect.

[0062] Other parts not described are the same as those of the first embodiment, and will not be described in detail here.

no. 3 example

[0064] A transparent plastic laser butt welding device differs from the first embodiment in that the motion platform 8 is a multi-joint manipulator motion platform, the multi-joint manipulator motion platform includes a six-axis manipulator, and the six-axis manipulator is provided with a fixed welding head 3. The fixture, the six-axis manipulator drives the welding head 3 to move through the fixture; the actuator that makes the two welding heads 3 respectively pass through the motion platform 8 to realize the three-dimensional space curved welding trajectory is the actuator that realizes the three-dimensional space welding trajectory.

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Abstract

The invention relates to a laser butt welding device and method for transparent plastic. The butt welding device comprises a laser device and a workbench, a moving platform and a tool clamp assembly are arranged on the workbench, two butt welding transparent plastic plates are arranged on the tool clamp assembly, cooling fins are arranged above butt joint portions of the plastic plates, and a welding head assembly is arranged on the moving platform; and two welding heads on the welding head assembly are installed at a certain angle, and the welding heads are connected with the laser device through optical fibers. The butt welding method comprises the steps that the laser device emits two laser beams, the focuses of the two laser beams conduct focusing on the butt joint portions of the twobutt welding transparent plastic plates, and the plastic absorbs laser energy and converts the laser energy into heat energy, so that the plastic at the butt joint portions generates little melting, and a butt welding seam is formed after cooling. According to the laser butt welding device and method, under the condition of not coating an absorbent, laser butt welding of two pieces of transparentplastic is achieved, the laser butt welding device and method have the advantages of being high in welding efficiency, high in welding strength, attractive in weld seam, clean, environment-friendly and the like, and the laser butt welding device and method are suitable for laser butt welding of the transparent plastic in the high-requirement fields of food, medical treatment and the like.

Description

technical field [0001] The invention relates to the field of laser welding of plastics, in particular to the field of laser butt welding of transparent plastics. Background technique [0002] Plastic is a high molecular compound polymerized by addition polymerization or polycondensation reaction with monomer as raw material. Because of its excellent characteristics such as light weight, good chemical stability, corrosion resistance, impact resistance and good insulation, it is a kind of It is a widely used engineering material. [0003] Most of the plastic products on the market are completed by injection molding. Due to the diverse development of plastic products, it is difficult to meet individual needs only by injection molding. Therefore, secondary molding of injection plastics is imperative. At present, traditional plastic secondary molding methods mainly include cementation, hot melt welding, hot air welding, ultrasonic welding, friction welding and so on. In the act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/16
CPCB29C65/16B29C66/80
Inventor 黄禹陈志潘奇才丁浩谢拥军
Owner 宁波华焯激光科技有限公司
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