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Light spot homogenizing system and method for laser soldering

A laser welding and spot technology, applied in the field of lasers, can solve the problems of affecting welding quality and uneven heating, and achieve the effect of good roundness, ensuring welding quality and uniform energy distribution.

Inactive Publication Date: 2021-11-02
苏州励上自动化科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, in the process of laser soldering, the difference between the central area and the edge area of ​​the laser irradiation spot will cause uneven heating and affect the welding quality.

Method used

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  • Light spot homogenizing system and method for laser soldering
  • Light spot homogenizing system and method for laser soldering
  • Light spot homogenizing system and method for laser soldering

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Embodiment

[0019] Example: see figure 1 , the invention provides a spot homogenization system for laser soldering, including a beam shaping component for homogenizing a collimated beam, and the beam shaping component sequentially includes a homogenizing lens group and a laser condenser lens along the advancing direction of the optical path Head 3, the main optical axis of the homogenizing lens group and the main optical axis of the laser condensing lens 3 coincide with the emission direction of the collimated beam, and the homogenizing lens group includes convex lens 1 and concave lens 2, convex lens 1 and concave lens 2 in sequence along the direction of optical path advancement interval setting.

[0020] The convex lens 1 is a plano-convex convex lens, and the concave lens 2 is a plano-concave concave lens. The convex surface of the convex lens 1 matches the concave surface of the concave lens 2, and the convex surface of the convex lens 1 and the concave surface of the concave lens 2 ...

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Abstract

The invention relates to the technical field of lasers, in particular to a light spot homogenizing system and method for laser soldering.The system comprises a light beam shaping assembly, the light beam shaping assembly sequentially comprises a homogenizing lens set and a laser condensing lens in the advancing direction of a light path, the homogenizing lens set sequentially comprises a convex lens and a concave lens in the advancing direction of the light path, and the convex lens and the concave lens are arranged in a spaced mode. The method comprises the following steps: step 1, sequentially assembling the convex lens, the concave lens and the laser condensing lens in the advancing direction of the light path; and step 2, adjusting the vertical distance between the convex lens and the concave lens, so that a light spot extending out of the laser condensing lens is elliptical. Uniformization treatment is carried out through the light beam shaping assembly, so that the roundness of the laser spot is better, energy distribution is more uniform, uneven heating caused by the difference between a laser irradiation spot center area and a laser irradiation spot edge area in the product welding process is avoided, and the welding quality is ensured.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a spot homogenization system and method for laser soldering. Background technique [0002] Laser soldering is to use laser to heat the connection part, melt the tin material, and realize the connection. Its characteristics are very remarkable: only local heating of the connection part, no thermal influence on the component body; fast heating and cooling speed, fine joint structure, High reliability; non-contact heating; different heating specifications can be implemented according to the type of component leads to obtain consistent joint quality; real-time quality control can be performed, etc. [0003] At present, in the process of laser soldering, the difference between the central area and the edge area of ​​the laser irradiation spot will cause uneven heating and affect the welding quality. Contents of the invention [0004] The object of the present invention is to provide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/005B23K3/04B23K3/08B23K26/06B23K26/064
CPCB23K1/0056B23K3/04B23K3/08B23K26/064B23K26/0648
Inventor 崔林
Owner 苏州励上自动化科技有限公司
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