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Laser welding method

A technology of laser welding and laser welding machine, applied in laser welding equipment, welding equipment, welding equipment and other directions, can solve the problem of not easy to ablate solder joints, and achieve the effect of avoiding welding errors, shortening welding time, and fast welding speed

Inactive Publication Date: 2015-03-25
深圳云麟科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to overcome the shortcomings of the current laser tin-feeding welding method, the present invention proposes a laser welding method that is not easy to ablate solder joints, tin blocking, tin breaking and the precision of tin-feeding is easy to control

Method used

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] see figure 2 In the laser welding method of the present invention, a circuit board 17 and a laser welding machine 10 need to be provided. There are one or more pads 18 to be soldered on the circuit board 17 , where the melted solder forms solder joints to complete the soldering of the pads 18 . The laser welding machine 10 (partial structure is not shown) that is positioned at the top of the circuit board 17 is used to realize the fast welding of the pad 18. The laser welding machine 10 includes a focusing head 11 and a tin feeding head 13. The focusing head 11 is laser we...

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Abstract

The invention provides a laser welding method. According to the method, a laser welding machine and a circuit board to be welded are provided, a plurality of bonding pads to be welded are arranged on the circuit board, the laser welding machine comprises a focusing head and a tin feeding head, the tin feeding head comprises a tin feeding end, the tin feeding end can feed a tin wire continuously, the tin feeding head is located between the focusing head and the bonding pads, before high-power light of the focusing head exits or while high-power light exits, a section of the tin wire is fed by the tin feeding head, and the tin wire, the focusing head and the bonding pads are located on the same straight line. According to the laser welding method, the welding speed is high, the welding precision is high, the requirement for control equipment is not high, the production cost is low, stability is improved greatly, and the laser welding method has high market value.

Description

【Technical field】 [0001] The invention relates to the field of welding, in particular to a tin-feeding laser welding method for welding circuit boards. 【Background technique】 [0002] Welding is a processing and connection method that produces interatomic bonding between two workpieces of the same sex or opposite sex by heating or pressure, or both. Welding is used in a wide range of applications, both on metals and non-metals. Today, with the development of the industrial industry, almost any ordinary item in our life needs to be welded, such as the anti-theft windows used in every household, the rice cooker for cooking, the mobile phone, earphones and other electronic products. Wait, soldering is used in their making. Welding applications can be described as ubiquitous. [0003] In our daily life, we often replace manual soldering with the soldering iron automatic soldering method. The soldering iron automatic soldering method has a history of more than 50 years, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/005B23K26/22
CPCB23K1/0056
Inventor 乐辉
Owner 深圳云麟科技有限公司
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