CN-224209300-U - Laser welding positioning device and laser welding system

CN224209300UCN 224209300 UCN224209300 UCN 224209300UCN-224209300-U

Abstract

The utility model discloses a laser welding positioning device and a laser welding system, which are used for positioning a piece to be welded on a product piece, and comprise a supporting piece, a welding piece and a welding piece, wherein the supporting piece is used for supporting the product piece; the pressure welding device comprises a bearing piece, a pressing piece, a pressure positioning piece, a pressure detection piece and a pressure detection piece, wherein the pressing piece can be close to or far from the bearing piece along a first direction, the pressure positioning piece is arranged on the pressing piece and comprises a pressure connection part, the pressure connection part is used for propping against a to-be-welded piece to press and position the to-be-welded piece to a product piece, a through groove is formed in the pressure connection part, the through groove penetrates through the pressure connection part along the first direction, and the pressure detection piece is used for detecting pressure applied by the pressure connection part to the to-be-welded piece. Compared with the prior art, the pressure detection part is arranged to detect the pressure applied to the piece to be welded by the pressure detection part, the pressure applied to the product piece by the pressure detection part is ensured to be within a proper range by monitoring the pressure applied in the pressure welding process in real time, the displacement of the piece to be welded in the welding process is not caused by the too small pressure, and the damage or penetration of the copper bar is not caused by the too large pressure.

Inventors

MA JIFEI
CHEN WENXIN
HONG ZHICAI
WU GUOXIAN
YU BING
DENG TIANJUN
WANG PING
DUAN WEI
Ling qinghai
LI JIE
LI FENG
YANG YUNPENG
QIN ZHIHONG
LI FENG

Assignees

重庆金康动力新能源有限公司

Dates

Publication Date: 20260508
Application Date: 20250507

Claims (10)

1. A laser welding positioning device for positioning a workpiece to be welded to a product piece, comprising: The supporting piece is used for supporting the product piece; A pressing member movable in a first direction toward or away from the support member; The crimping positioning piece is arranged on the pressurizing piece and comprises a crimping part, the crimping part is used for propping against the to-be-welded piece so as to crimp and position the to-be-welded piece on the product piece, a through groove is formed in the crimping part, and the through groove penetrates through the crimping part along the first direction; And the pressure detection piece is used for detecting the pressure applied to the piece to be welded by the crimping part.
2. The laser welding positioning device according to claim 1, wherein the positioning device is further provided with a plurality of ventilation pieces, the crimping positioning pieces are directly or indirectly connected with the ventilation pieces, ventilation cavities are arranged in the pressure applying pieces, the ventilation pieces are arranged on the pressure applying pieces, ventilation channels are arranged in the ventilation pieces in a penetrating mode, the ventilation channels are provided with first ends and second ends, the first ends of the ventilation channels are communicated with the ventilation cavities, and the second ends of the ventilation channels extend towards the crimping positions of the crimping portions and the to-be-welded pieces.
3. The laser welding positioning apparatus of claim 2 wherein the pressure sensing member includes a slider, a spring, and a pressure sensor, wherein: The sliding block can be in sliding fit with the ventilation piece along the first direction, and the crimping positioning piece can be in sliding fit with the sliding block along the first direction; the pressure sensor is fixed on the ventilation piece, one end of the spring is connected with the sliding block, and the other end of the spring is abutted to the pressure sensor.
4. The laser welding positioning device according to claim 1, wherein the pressure welding portion includes a plurality of walls, and the through groove is formed around the plurality of walls.
5. The laser welding positioning apparatus according to claim 4, wherein the wall thickness of the wall is 0.2-0.4mm.
6. The laser welding positioning device as set forth in claim 4, wherein a bottom portion of one of said walls is provided with a press-fit protrusion.
7. The laser welding positioning device of claim 1, wherein the support member comprises a first tray and a second tray, the first tray is detachably disposed on the second tray, and the first tray is used for supporting the product member.
8. The laser welding positioning device of claim 7 wherein said second tray is provided with a support post for cooperating with a predetermined location on said product piece to support said product piece on said second tray.
9. The laser welding positioning apparatus as set forth in claim 1, wherein said pressing member is connected to a height adjusting member for adjusting a distance between said pressing member and said product member in said first direction.
10. A laser welding system comprising a production line, a laser welding positioning device and a laser source, wherein the laser welding positioning device is a laser welding positioning device according to any one of claims 1-9, wherein: The bearing piece is arranged on the production line and moves along a preset path along the production line, a preset position is arranged on the preset path, and when the bearing piece bears the product piece to reach the preset position, the bearing piece can move back and forth along the first direction; The pressing piece and the laser source are both positioned at the preset position, when the supporting piece reaches the preset position, the pressing piece moves along the first direction, the pressing positioning piece is used for pressing and positioning the to-be-welded piece onto the product piece, and light rays emitted by the laser source pass through the through groove and then reach the welding position of the to-be-welded piece and the product piece.

Description

Laser welding positioning device and laser welding system Technical Field The utility model relates to the technical field of laser welding, in particular to a laser welding positioning device and a laser welding system. Background In the field of vehicle-mounted motor controller assembly in the new energy automobile assembly industry, the frequency converter needs to be frequently loaded with requirements of high frequency, high current, high heat conduction and the like, and an assembly point basically adopts a high-strength welding process. In the prior art, the copper bar needs to be welded to the motor controller by laser, and the copper bar is crimped and positioned at a preset position of the motor controller by using a pressure head before welding, but if the crimping pressure is too high, a molten pool is easily welded through. Disclosure of utility model The utility model aims to provide a laser welding positioning device and a laser welding system, which are used for solving the technical problems in the prior art, ensuring moderate pressure and avoiding damage or penetration of copper bars caused by overlarge pressure. In a first aspect, the present utility model provides a laser welding positioning device for positioning a workpiece to be welded to a product piece, comprising: The supporting piece is used for supporting the product piece; A pressing member movable in a first direction toward or away from the support member; The crimping positioning piece is arranged on the pressurizing piece and comprises a crimping part, the crimping part is used for propping against the to-be-welded piece so as to crimp and position the to-be-welded piece on the product piece, a through groove is formed in the crimping part, and the through groove penetrates through the crimping part along the first direction; And the pressure detection piece is used for detecting the pressure applied to the piece to be welded by the crimping part. The laser welding positioning device is characterized in that the positioning device is further provided with a plurality of ventilation pieces, the crimping positioning pieces are directly or indirectly connected with the ventilation pieces, ventilation cavities are formed in the pressure applying pieces, the ventilation pieces are arranged on the pressure applying pieces, ventilation channels are arranged in the ventilation pieces in a penetrating mode, the ventilation channels are provided with first ends and second ends, the first ends of the ventilation channels are communicated with the ventilation cavities, and the second ends of the ventilation channels extend towards crimping positions of the crimping portions and the to-be-welded pieces. The laser welding positioning device as described above, wherein preferably, the pressure detecting member includes a slider, a spring, and a pressure sensor, wherein: The sliding block can be in sliding fit with the ventilation piece along the first direction, and the crimping positioning piece can be in sliding fit with the sliding block along the first direction; the pressure sensor is fixed on the ventilation piece, one end of the spring is connected with the sliding block, and the other end of the spring is abutted to the pressure sensor. In the laser welding positioning device as described above, it is preferable that the pressure-bonding section includes a plurality of walls, and the through groove is formed by surrounding the plurality of walls. A laser welding positioning device as described above, wherein preferably the wall thickness of the wall is 0.2-0.4mm. In the laser welding positioning device, preferably, a bottom of one of the walls is provided with a crimp protrusion. The laser welding positioning device according to the above aspect, preferably, the supporting member includes a first tray and a second tray, the first tray is detachably disposed on the second tray, and the first tray is used for supporting the product piece. In one embodiment, the second tray is provided with a support column, and the support column is configured to cooperate with a preset portion on the product piece to support the product piece on the second tray. In the laser welding positioning device as described above, preferably, the pressing member is connected to a height adjusting member for adjusting a distance between the pressing member and the product member in the first direction. In a second aspect, the present utility model provides a laser welding system, including a production line, a laser welding positioning device and a laser source, where the laser welding positioning device is the foregoing laser welding positioning device, and the laser welding positioning device includes: The bearing piece is arranged on the production line and moves along a preset path along the production line, a preset position is arranged on the preset path, and when the bearing piece bears the product piece to reach the preset position, the bearing piece c