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A dual-component laser bonding device

A joining device and laser technology, applied in the direction of laser welding equipment, welding equipment, welding/welding/cutting items, etc., to achieve the effect of stable welding and high-speed welding

Active Publication Date: 2022-05-20
UNITED WINNERS LASER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] To sum up, the object of the present invention is to solve all the above-mentioned problems and achieve high-quality and high-speed welding of two parts at the same time without using expensive galvanometers

Method used

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  • A dual-component laser bonding device
  • A dual-component laser bonding device
  • A dual-component laser bonding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] figure 1 (a) is a side view of the laser bonding apparatus and bonding method of two members of Example 1, figure 1 (b) is a plan view of the end faces of the two members viewed from the laser-irradiated upper surface.

[0030] The high-brightness fiber laser 2 that produces a keyhole on the machined surface 3 is emitted from the fiber laser 5 through the fiber 6 , and the collimated laser 8 is obtained through the collimating lens 7 .

[0031] The collimated laser light 8 is reflected to approximately 90 degrees by a circular mirror 11 having a sloped shape fixed to the rotary motor 9 at the position of the rotation center of gravity 1 , and then reflected by the mirror 12 and condensed by a condenser lens 13 . The mirror 11 is mounted at an angle of 45°+α slightly larger than 45°, and is obtained by rotating at a high speed on the machined surface 3 with an angle of 45°+α. figure 1 The bonding center 14 shown in (b) is a laser focal point 15 that rotates in a cir...

Embodiment 2

[0039] image 3 (a) shows that in Example 1, the fiber laser 2 and the blue laser 18 are wavelength-division-multiplexed in the laser output unit 31, and after wavelength-division multiplexing by the fiber-type wavelength division multiplexer 32, image 3 The core portion 38 of the double-clad process fiber 33 shown in (b) transmits fiber laser light through the cladding 39 , transmits blue laser light through the cladding 39 , and emits dual-wavelength laser light 34 . In addition, the description of the part which overlaps with Example 1 is abbreviate|omitted.

[0040] The dual-wavelength laser light 34 is collimated by the collimating lens 35 and then reflected by the circular mirror 11 having the same slope shape as used in Embodiment 1, and then condensed by the condenser lens 36 , and is configured to Two metal members 361 are welded at the rotational focus 37 .

[0041]In Example 1, the rotation reflection was performed at about 90 degrees, but it may not be 90 degree...

Embodiment 3

[0044] Figure 4 (a) is a basic configuration diagram of a two-member laser bonding apparatus and a bonding method in Example 3. FIG. The description of the part overlapping with Embodiment 1 is omitted.

[0045] The inner half 41 of the collimated laser light 8 is transformed by the wedge-shaped edge prism 42 into semi-collimated light 43 whose optical axis is slightly inclined.

[0046] A circular focal spot is obtained on one side of the copper rod 1 with two contact square cross-sections on the machined surface 3 .

[0047] On the other hand, the remaining half of the semi-collimated light 45 in the collimated laser light 8 is reflected by the inclined-shaped mirror 11 to obtain another circular focus on the other side of the copper rod 1 . According to the same principle as in Embodiment 1, the condensing spot 16 of the blue laser light 18 is irradiated at the junction center 14 between the two focal spots generating the keyhole 4 . The diameter of the openings 16 is i...

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Abstract

The invention discloses a dual-component laser bonding device, which comprises two metal components, and when the two metal components are in contact with or close to each other, a high-brightness first keyhole that produces a keyhole is set in any one of the two metal components. Laser beams, and reflect the second laser beams with low brightness and different wavelengths that do not produce keyholes in a wavelength division multiplexed manner, and condense the reflected two laser beams into the laser bonding device through the condenser lens, Among the reflected laser beams, the first laser beam is focused on two metal members, and the second laser beam is focused near the rotating keyhole, and the opening diameter of the keyhole is melted by the high-speed heating of the second laser beam , the metal temperature rises to increase the aperture of the keyhole. The invention can simultaneously realize high-quality and high-speed welding of two parts without using an expensive ammeter, and has the characteristics of low cost, easy implementation and the like.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to a two-component laser bonding device. Background technique [0002] In recent years, due to the high performance of the laser oscillator and the improvement of the function of the laser irradiator, the quality of the welding of the two components and the quality of the welding contact have improved. This, coupled with the high power absorption of copper by green and blue lasers, enables high-quality, high-contact welding of copper that has been difficult to achieve until now. [0003] Prior art literature: [0004] Patent Document 1: JP 2016-421 Laser Beam; [0005] Patent Document 2: Japanese Patent Laid-Open No. 2018106059 Mitsubishi Electric; [0006] Figure 7 The shown Patent Document 1 is a method called vibration, and is a method of performing spiral welding while rotating in a circular shape while rotating the laser condensing point for processing. Figure 8 is Patent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/21B23K26/06
CPCB23K26/21B23K26/06B23K26/0604B23K2103/12
Inventor 樱井努牛增强卢国杰陈国宁
Owner UNITED WINNERS LASER CO LTD
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