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Device for establishing four-side solder wicking prevention substrate by laser ablation

A technology of laser ablation and equipment, which is applied in the manufacture of contacts, etc., can solve the problems of affecting the performance of metal terminals, limited suppression ability, and inability to apply a large number of actual production, so as to improve the ability to suppress tin creep and realize high-speed mass production Effect

Active Publication Date: 2018-04-10
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, laser ablation is usually used to form a nickel barrier to prevent tin climbing. However, the current method of preventing tin climbing by establishing a nickel barrier often has limited suppression ability. To improve the suppression effect, the nickel barrier area must be expanded, which will inevi

Method used

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  • Device for establishing four-side solder wicking prevention substrate by laser ablation
  • Device for establishing four-side solder wicking prevention substrate by laser ablation
  • Device for establishing four-side solder wicking prevention substrate by laser ablation

Examples

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Embodiment Construction

[0043] Taking the FTB H-type electrical connector female terminal as an example, the terminal 4 is linearly arranged on the strip 1, and the strip 1 is wound on the tray 2, 5 is the ablation area under the right welding foot of the terminal, and 6 is under the left welding foot of the terminal Ablation area, 7 is the ablation area on the right leg of the terminal, 8 is the ablation area on the left leg of the terminal, the ablation area is required to be as follows figure 1 shown. No. 1 and No. 4 positioning and guiding mechanisms (24-a, 24-d) turn 45 degrees from inside to outside, and No. 2 and No. 3 positioning and guiding mechanisms (24-b, 24-c) turn 45 degrees from outside to inside. Touch the control panel 12 to set the laser ablation parameters: laser frequency 30kHz, laser scanning line speed 5000mm / s, laser power 30W, laser width 0.1mm, scanning area: length is 1pcs (1 terminal is 1pcs), width is 1pcs There are two parallel rectangles (each rectangle corresponds to a...

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Abstract

The invention relates to an electrical connector manufacturing device, in particular to an automatic production device that ablates four sides of the surface of a terminal with laser and establishes anickel barrier to prevent solder wicking. The main structure includes a feeding mechanism, a positioning and guiding mechanism, a material pulling mechanism, a cutting mechanism, a laser ablation device, a material belt and a control system. The working principle is that through continuous laser ablation of specific positions of the front and back of a metal terminal of an electrical connector, by the use of high energy of the laser, gold layers plated on the surfaces of four front and back sides of the terminal weld leg parts are ablated and removed to expose nickel layers to form a nickel barrier so as to prevent solder paste from climbing up with bent positions of the terminal weld legs during the surface mount, and the poor welding is prevented.

Description

technical field [0001] The invention relates to an electric connector manufacturing equipment, in particular to an automatic production equipment which utilizes a laser to ablate the surface of a terminal on all sides to establish a nickel barrier to prevent tin climbing. Background technique [0002] At present, terminals known in the electrical connector industry are made by bending metal. One end is welded to a circuit board by surface mounting technology, and the other end uses the elasticity of the contact terminal itself to form an elastic contact arm for contacting with other electronic components. However, the surface mount technology uses solder to solder the terminal to the circuit board, and the solder paste usually tends to climb along the bent part, resulting in poor soldering. In order to improve this phenomenon of tin climbing, commonly used methods are: changing the terminal structure to prevent tin climbing; designing an empty slot at the joint between the ...

Claims

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Application Information

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IPC IPC(8): H01R43/16
CPCH01R43/16
Inventor 罗开玉尹越王潇霄鲁金忠
Owner JIANGSU UNIV