Laser welding equipment

Abstract

To provide laser welding equipment that is improved in welding quality and reduced in cost.SOLUTION: Laser welding equipment comprises a base portion 1, a positioning assembly 2, a laser device 3, a reflection assembly 4, a transmission assembly 5 and an interlocking rotation assembly 6 and performs welding between end faces of a first workpiece and a second workpiece. The base portion fixes the first and second workpieces. The positioning assembly is disposed above the base portion and has a fixed clamping member and two connecting members. The laser device is connected to the fixed clamping member 21. The reflection assembly is connected to the fixed clamping member. The transmission assembly is connected to a bracket assembly 30 of the laser device. The interlocking rotation assembly has one end connected to a motor provided in the transmission assembly and the other end connected to the connecting member 22 of the positioning assembly.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a laser welding apparatus having a simplified structure. [Background technology]

[0002] A conventional laser welding machine 9 uses laser energy to perform welding. Figure 7 shows the "Automatic Auxiliary Welding Device" of Taiwan Patent No. TW202346015A. The conventional laser welding machine 9 uses a laser oscillator to form a light beam, which is expanded, reflected, and focused before being irradiated onto the surface of a workpiece 91. The surface heat generated by the irradiation melts the workpiece through thermal conduction, and the laser welding of the workpiece 91 is achieved by the specific melt spot formed.

[0003] However, the conventional laser welding machine 9 uses a connecting rod assembly structure 92 for connection to the laser welding machine 9, and the connecting rod assembly structure 92 moves up and down or forward and backward and left and right, resulting in spatial positional and angular changes. In addition, a laser gun 93 is connected to the end of the connecting rod assembly structure 92, and when the connecting rod assembly structure 92 moves, it affects the laser gun 93, causing the laser gun 93 to shake during welding, which can reduce welding accuracy or cause the welding position to shift, and therefore improvement is required. Summary of the Invention [Problem to be solved by the invention]

[0004] In consideration of the above-mentioned problems present in conventional laser welding machines, the inventors of the present invention have developed the laser welding apparatus of the present invention. A primary object of the present invention is to provide a laser welding apparatus with improved welding quality. Another object of the present invention is to provide a laser welding apparatus with reduced costs. [Means for solving the problem]

[0005] To achieve the above objectives, the present invention adopts the following technical solutions:

[0006] The present invention provides a laser welding apparatus for welding the end faces of a first workpiece and a second workpiece. The laser welding apparatus of the present invention includes a base, a positioning assembly, a laser device, a reflecting assembly, a transmission assembly, and an interlocking rotation assembly. The base secures the first workpiece and the second workpiece. The positioning assembly is installed above the base, and includes a fixed clamping member and two linking members, each of which is installed to connect to either side of the fixed clamping member. The laser device is installed to connect to the fixed clamping member, and the fixed clamping member is installed to connect to the bracket assembly. The reflecting assembly is installed to connect to the fixed clamping member, and the reflecting assembly is provided with a reflecting mirror corresponding to the laser device. The transmission assembly is installed to connect to the bracket assembly of the laser device. One end of the interlocking rotation assembly is connected to a motor installed in the transmission assembly, and the other end is installed to connect to the linking member of the positioning assembly.

[0007] The base portion further includes two support portions connected to the upper portion of the base portion, and the two support portions respectively fit onto the outsides of the first workpiece and the second workpiece to support and fix the first workpiece and the second workpiece in predetermined positions.

[0008] The fixed clamping member of the positioning assembly is provided with a first fixed block and a second fixed block extending radially, and a bore is provided between the first fixed block and the second fixed block.

[0009] The reflecting assembly is connected to the first fixed block, the laser device is connected to the second fixed block, and the laser device corresponds to a reflecting mirror of the reflecting assembly.

[0010] The laser emits a laser beam onto a reflecting mirror of the reflecting assembly, which redirects the laser beam through the perforation.

[0011] The laser device further includes four conduits, which pass through four fixing holes provided in the fixed clamping member and are positioned in the laser device.

[0012] The fixed clamping member of the positioning assembly is pivotally connected to two movable clamping members, and the two movable clamping members are respectively installed to connect to the two linking members.

[0013] The interlocking rotation assembly includes a large gear and a small gear, the large gear is connected to the outside of the two connecting members of the positioning assembly, the small gear is connected to the motor of the transmission assembly, and the small gear is connected to mesh with the large gear.

[0014] The positioning assembly comprises two fixed shaft members and a cover member, the two fixed shaft members being respectively connected to the two connecting members, the cover member covering the interlocking rotation assembly, and the two fixed shaft members, the two connecting members, the large gear, the first workpiece, and the second workpiece being fixed so as to be stationary relative to each other (fixed to a stationary body).

[0015] The interlocking rotation assembly rotates the fixed clamping member, the laser device, and the reflecting assembly through a certain angle or circle around a central axis provided on the large gear. [Effects of the Invention]

[0016] The present invention has the following advantages due to the above-mentioned solution.

[0017] 1. In the present invention, the small gear of the transmission assembly rotates the large gear, thereby driving the interlocking rotation assembly, and the laser device and the reflecting assembly rotate around their central axes, while the first workpiece, the second workpiece, the two connecting members, and the two fixed shaft members remain stationary, so that the laser device rotates stably during the welding process and the objective of improving processing accuracy can be achieved.

[0018] 2. The present invention uses a simple mechanism in which the laser device and the interlocking rotating assembly work together by utilizing gear meshing to rotate the laser device around a central axis, without the need for complex connecting rods, thereby reducing the manufacturing costs of the laser welding device. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a three-dimensional view of a laser welding apparatus according to the present invention; [Figure 2] 1 is a three-dimensional exploded view of a laser welding apparatus according to the present invention; [Figure 3] 1 is a cross-sectional view of a laser welding apparatus according to the present invention. [Figure 4] 1 is a conceptual diagram showing how the laser device of the present invention operates and how a laser beam is reflected by a reflecting mirror. [Figure 5] XX cross-sectional view of FIG. 4 of the present invention. [Figure 6] 1 is a conceptual diagram showing how the interlocking rotation assembly of the present invention rotates the laser device around the device's central axis to perform welding operations. [Figure 7] FIG. 1 is a conceptual diagram of a conventional laser welding machine. DETAILED DESCRIPTION OF THE INVENTION

[0020] 1 and 2, the laser welding apparatus A of the present invention is for performing end face welding of a first workpiece 71 and a second workpiece 72, and comprises a base 1, a positioning assembly 2, a laser device 3, a reflecting assembly 4, a transmission assembly 5, and an interlocking rotation assembly 6. The structure of the present invention will be described in detail below with reference to the drawings.

[0021] As shown in Figures 1 and 2, the base 1 is supported (placed) on the ground, and two supports 11 are provided on the base, which support the first workpiece 71 and the second workpiece 72 and fix the positions of the first workpiece 71 and the second workpiece 72, thereby preventing the first workpiece 71 and the second workpiece 72 from bending due to gravity and reducing the quality of the welding work.

[0022] 1 and 2, the positioning assembly 2 further includes a fixed clamping member 21, two linking members 22, and two fixed shaft members 24. The two linking members 22 are installed to connect to both sides of the fixed clamping member 21, and the two support parts 11 are installed to connect to the upper part of the base part 1, and the two support parts 11 are connected to the first workpiece 71 to fix the first workpiece 71.

[0023] Furthermore, as shown in Figures 1 to 3, the fixed clamping member 21 is provided with a first fixed block 211 and a second fixed block 212, and the first fixed block 211 and the second fixed block 212 extend in the radial direction of the circular cross section of the fixed clamping member 21, a perforation 214 is provided between the first fixed block 211 and the second fixed block 212, the reflection assembly 4 is installed so as to be connected to the first fixed block 211, and the laser device 3 is installed so as to be connected to the second fixed block 212, and the fixed clamping member 21 is pivotally connected to two movable clamping members 215, and the two movable clamping members 215 are connected to and fixed to the two connecting members 22, respectively. The fixed clamping member 21 and the two movable clamping members 215 are tightly fitted to the first workpiece 71 and the second workpiece 72, so that the fixed clamping member 21, the two movable clamping members 215, the two connecting members 22, the two fixed shaft members 24, the first workpiece 71, and the second workpiece 72 can form a stationary body (not moving, in a stationary state relative to each other) without shaking.

[0024] 1 and 2, the laser device 3 is installed so as to be connected to the fixed clamping member 21. The laser device 3 further includes four conduits 31, which pass through four fixing holes 213 provided in the fixed clamping member 21 and are positioned in the laser device 3. The laser device 3 emits a laser beam 32 that is irradiated onto a reflecting mirror 41 of the reflecting assembly 4, and the laser beam 32 is reflected at a certain angle by the reflecting mirror 41 and passes through the perforation 214 of the fixed clamping member 21.

[0025] As shown in FIGS. 1 and 2, the reflection assembly 4 is installed so as to be connected to the fixed clamping member 21, and the reflection assembly 4 is provided with a reflection mirror 41 corresponding to the laser device 3.

[0026] As shown in Figures 1 and 2, the transmission assembly 5 is configured to connect to the laser device 3, and a motor 51 is provided in the transmission assembly 5, and the motor 51 is configured to connect to a bracket assembly 30 provided in the laser device 3.

[0027] 1 and 2, the interlocking rotation assembly 6 further includes a large gear 61 and a small gear 62. The large gear 61 is connected to the outside of the two connecting members 22 of the positioning assembly 2. The small gear 62 is installed to be connected to a rotation shaft provided on the motor 51 of the transmission assembly 5, and the small gear 62 is installed to be connected to and mesh with the large gear 61. The interlocking rotation assembly 6 rotates the fixed clamping member 21, the two movable clamping members 215, the laser device 3, and the reflecting assembly 4 through a certain angle or in a circular rotation around the central axis Z of the large gear 61.

[0028] The laser welding apparatus A of the present invention provides a better solution, as shown in FIGS. 3 and 4. First, an operator attaches the first workpiece 71 and the second workpiece 72 to the fixed shaft member 24 of the positioning assembly 2. The first workpiece 71 and the second workpiece 72 are fixed together by the movable clamping member 215 clamping and fixing the fixed clamping member 21. At this time, the end face of the first workpiece 71 contacts (abuts) the end face of the second workpiece 72, allowing partial spot welding to be performed in advance. Then, the operator activates the laser device 3 to irradiate the reflecting mirror 41 of the reflecting assembly 4 with the laser beam 32. The laser beam 32 is deflected 90 degrees by the reflecting mirror 41 and passes through the perforation 214 in the fixed clamping member 21, welding the connected end faces of the first workpiece 71 and the second workpiece 72.

[0029] 4 to 6, the motor 51 of the transmission assembly 5 is operated to rotate the small gear 62, which is connected to mesh with the large gear 61. The small gear 62 rotates the fixed clamping member 21, the movable clamping member 215, the laser device 3, the reflecting assembly 4, and the transmission assembly 5 by a predetermined welding angle around the central axis Z of the large gear 61, thereby welding the first workpiece 71 and the second workpiece 72. At the same time, the two connecting members 22, the two fixed shaft members 24, the large gear 61, the first workpiece 71, and the second workpiece 72 remain stationary. After welding is completed, the laser device 3 is stopped and the next workpiece is transported to a fixed position. Then, the laser device 3 is operated again, and the motor 51 is rotated in the reverse direction to weld the next workpiece.

[0030] As described above, the present invention provides a laser welding apparatus, the structure of which has not been disclosed in publications or made publicly available through telecommunications lines, and therefore meets the requirements for a patent.

[0031] The above content is the technical principle adopted in the specific embodiment of the present invention, and if any changes or improvements are made in accordance with the detailed description of the present invention, all such changes or improvements are included in the scope of the claims of the present invention.

[0032] A: Laser welding equipment 1: Base part 11: Support part 2: Positioning assembly 21: Fixed clamping member 211: First fixed block 212: Second fixed block 213: Fixed hole 214: Perforation 215: Movable clamping member 22: Connecting member 24: Fixed shaft member 3: Laser device 30: Bracket assembly 31: Conduit 32: Laser beam 4: Reflective assembly 41: Reflective mirror 5: Transmission assembly 51: Motor 6: Interlocking Rotating Assembly 61: Large gear 62: Small gear Z: Center axis 71: First workpiece 72: Second workpiece 9: Conventional laser welding machine 91: Workpiece 92: Connecting rod assembly structure 93: Laser Gun

Claims

1. A laser welding apparatus comprising: a base portion, a positioning assembly, a laser device, a reflecting assembly, a transmission assembly, and a linked rotation assembly; The base portion is provided with two support portions, and the two support portions fix a first workpiece and a second workpiece to be processed; The positioning assembly is installed above the base portion, and the positioning assembly includes a fixed clamping member and two connecting members, and the two connecting members are installed on both sides of the fixed clamping member, respectively; the laser device is installed to be connected to the fixed clamping member, and the fixed clamping member is installed to be connected to the bracket assembly; the reflection assembly is installed to be connected to the fixed clamping member, and the reflection assembly is provided with a reflection mirror corresponding to the laser device; the transmission assembly is configured to connect to the bracket assembly of the laser device; One end of the interlocking rotation assembly is connected to a motor provided in the transmission assembly, and the other end is connected to a connecting member of the positioning assembly; a positioning assembly that abuts an end face of the first workpiece to be processed against an end face of the second workpiece to be processed, and the laser device, the reflecting assembly, and the linked rotating assembly cooperate to weld the two abutted end faces.

2. 2. The laser welding apparatus according to claim 1, wherein the two support parts are fitted to the outside of the first workpiece to be processed and the second workpiece to be processed, thereby fixing the first workpiece and the second workpiece in a predetermined supporting position.

3. 2. The laser welding apparatus according to claim 1, wherein the fixed clamping member of the positioning assembly is provided with a first fixed block and a second fixed block extending radially, and a hole is provided between the first fixed block and the second fixed block.

4. 4. The laser welding apparatus according to claim 3, wherein the reflecting assembly is installed to be connected to the first fixed block, the laser device is installed to be connected to the second fixed block, and the laser device corresponds to a reflecting mirror of the reflecting assembly.

5. 5. The laser welding apparatus of claim 4, wherein the laser emits a laser beam onto a reflecting mirror of the reflecting assembly, the reflecting mirror redirecting the laser beam through the perforation.

6. 6. The laser welding apparatus according to claim 1, wherein the laser device further comprises four conduits, and the four conduits are positioned in the laser device by passing through four fixing holes provided in the fixed clamping member.

7. 2. The laser welding apparatus according to claim 1, wherein the fixed clamping member of the positioning assembly is pivotally connected to two movable clamping members, and the two movable clamping members are respectively installed to connect to the two connecting members.

8. 2. The laser welding apparatus according to claim 1, wherein the interlocking rotation assembly comprises a large gear and a small gear, the large gear is connected to the outer sides of the two connecting members of the positioning assembly, the small gear is connected to the motor of the transmission assembly, and the small gear is connected to mesh with the large gear.

9. 9. The laser welding apparatus according to claim 8, wherein the positioning assembly comprises two fixed shaft members and a cover member, the two fixed shaft members being respectively connected to the two connecting members, the cover member covering the interlocking rotation assembly, and the two fixed shaft members, the two connecting members, the large gear, the first workpiece, and the second workpiece being fixed so as to be stationary relative to each other.

10. 10. The laser welding apparatus according to claim 9, wherein the interlocking rotation assembly rotates the fixed clamping member, the laser device, and the reflecting assembly at a certain angle or in a circular shape around a central axis provided on the large gear.

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