Laser welding platform with square tube edge sealing clamp

Abstract

The utility model discloses a laser welding platform with a square tube edge sealing clamp, which comprises a welding machine base, a welding machine platform arranged on the upper surface of the welding machine base, a three-axis welding device arranged on the welding machine platform and a laser welding gun arranged on the three-axis welding device, the square tube edge sealing clamp comprises a fixing table which is arranged on the welding machine platform and is used for placing a square tube, a plurality of clamping jaws which are arranged on the fixing table, a positioning strip which is used for limiting the square tube in the radial direction, a positioning block which is used for limiting the square tube in the axial direction, and a rotating mechanism which enables the fixing table to rotate. The clamp can adapt to various square pipes with different sizes, the welding mode can be flexibly adjusted according to different welding environments and requirements, the application range of the clamp is widened, and replacement of the clamp is reduced; the clamp is simple in overall operation, can be used easily, is high in welding accuracy and stability, and can improve the production efficiency and reduce the labor cost.

Description

Technical Field

[0001] The utility model relates to the technical field of square tube edge sealing laser welding, in particular to a laser welding platform with a square tube edge sealing clamp. Background Art

[0002] The fixtures used in laser welding machines for square tube edge banding are primarily used to hold and secure the workpiece during laser welding, ensuring a stable and efficient welding process. In specific applications like square tube edge banding, the accuracy and stability of the fixture significantly impact the quality of the laser weld.

[0003] In recent years, with the rapid development of laser welding technology, research on laser welding fixtures has continued to deepen in China. Researchers are committed to improving the accuracy, stability, and automation of fixtures to meet the high quality requirements of laser welding across various industries. Combined with the rapid development of artificial intelligence robotics and automation technology, laser welding fixtures are becoming even more intelligent. By incorporating advanced sensors and data analysis algorithms, fixtures can automatically adjust part shape, adjust welding parameters, and automatically correct weld deviations, thereby improving laser welding efficiency and quality.

[0004] The primary task of the square tube edge-sealing fixture is to ensure that the square tube maintains precise positioning and stable support during the laser welding process. This helps prevent potential displacement during welding, thereby ensuring weld accuracy and quality. Using specialized fixtures allows for precise control of the welding process, reducing the need for rework and improving production efficiency. The fixture design also needs to consider operator safety. By providing stability, reliability, and secure fixation, it can reduce operator risk during automated welding. Furthermore, the fixture's convenience can improve operator efficiency. Summary of the Invention

[0005] In view of this, the purpose of the present utility model is to solve the above technical problems and provide a laser welding platform with a square tube edge sealing fixture.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a laser welding platform with a square tube edge sealing fixture, comprising a welding machine base, a welding machine platform arranged on the upper surface of the welding machine base, a three-axis welding device arranged on the welding machine platform and a laser welding gun arranged on the three-axis welding device, the three-axis welding device comprising an X-axis robotic arm for lateral translation, a Z-axis robotic arm for vertical lifting and a Y-axis robotic arm for forward and backward translation connected in sequence, and also comprising a square tube edge sealing fixture arranged on the welding machine platform, the square tube edge sealing fixture comprising a fixed platform for placing square tubes arranged on the welding machine platform, a plurality of clamps arranged on the fixed platform, a positioning bar for radially limiting the square tube and a positioning block for axially limiting the square tube, and a rotating mechanism for rotating the fixed platform, the positioning bar being arranged on one side of the fixed platform, and the rotation axis of the rotating mechanism being parallel to the X-axis robotic arm.

[0007] Preferably, the rotating mechanism includes a pair of rotating shaft seats arranged on the welding machine platform, a turntable arranged on the rotating shaft seat, a transmission gear connected to the turntable, a driving gear connected to the transmission gear and a motor connected to the driving gear. The fixed platform is connected between the pair of rotating shaft seats and rotates with the turntable parallel to the X-axis robotic arm.

[0008] Furthermore, a through hole is formed on the turntable at one end of the rotating shaft seat away from the welding end, and a square tube with a length longer than the distance between the two rotating shaft seats is inserted into the through hole.

[0009] Furthermore, a synchronous transmission shaft is provided between the two driving gears of a pair of the rotating shaft seats, and the synchronous transmission shaft is connected to the motor to enable the two driving gears to rotate synchronously.

[0010] Furthermore, the positioning block is provided on the turntable, the positioning block is flush with one end portion of the fixed platform, and the positioning block rotates synchronously with the turntable and the fixed platform.

[0011] Furthermore, the fixing platform is fixed to the turntable at one end of the laser welding gun via a cantilever connecting rod, and the cantilever connecting rod is fixedly connected to the side plane of the fixing platform.

[0012] Preferably, the square tube edge sealing fixture also includes a material return device arranged on the welding machine platform, the material return device includes a push rod that can move telescopically forward and backward and a two-axis moving device connected to the push rod, the two-axis moving device includes a Y-axis moving part and a Z-axis moving part, and the push rod is connected to the Y-axis moving part.

[0013] Preferably, the clamping claw comprises a clamping seat connected to the fixing platform, a cylinder provided in the clamping seat, and a clamping plate connected to the cylinder and capable of telescopically moving up and down relative to the surface of the fixing platform.

[0014] Furthermore, the plurality of clamping jaws are arranged in a straight line along one side of the fixing platform.

[0015] The technical effects of the utility model are mainly reflected in the following aspects: (1) It can adapt to a variety of square tubes of different sizes and can also flexibly adjust the welding method according to different welding environments and needs, thereby increasing the scope of application of the fixture and reducing the replacement of the fixture; (2) The overall operation of the fixture is simple and can be easily used, and the welding accuracy and stability are high, which can improve production efficiency and reduce labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the overall structure of the utility model Figure 2 ;

[0018] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure of part A;

[0019] Figure 4 This is a schematic diagram of the overall structure of the utility model Figure 3 ;

[0020] Figure 5 This is a schematic diagram of the overall structure of the utility model Figure 4 ;

[0021] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure of part B. DETAILED DESCRIPTION

[0022] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp. Example 1

[0023] according to Figure 1-6As shown, a laser welding platform with a square tube edge sealing fixture includes a welding machine base 1, a welding machine platform 2 arranged on the upper surface of the welding machine base 1, a three-axis welding device 3 arranged on the welding machine platform 2, and a laser welding gun 4 arranged on the three-axis welding device 3, the three-axis welding device 3 includes an X-axis robot 31 for lateral translation, a Z-axis robot 32 for vertical lifting and lowering, and a Y-axis robot 33 for front and back translation, which are connected in sequence, the laser welding gun 4 is connected to the Y-axis robot 33, and also includes a square tube edge sealing fixture 5 arranged on the welding machine platform 2, the square tube edge sealing fixture 5 includes a fixed platform 51 for placing a square tube 6 arranged on the welding machine platform 2, a plurality of clamps 52 arranged on the fixed platform 51, a positioning bar 53 for radially limiting the square tube 6 and a positioning block 54 for axially limiting the square tube 6, and a rotating mechanism 55 for rotating the fixed platform 51, the positioning bar 53 is arranged on one side of the fixed platform 51, and the rotation axis of the rotating mechanism 55 is parallel to the X-axis robot 31.

[0024] After the square tube 6 is placed on the fixed platform 51, it reaches a preset position under the action of the positioning bar 53, for example, the welding part of the square tube 6 reaches the starting point of the laser welding gun 4, and the clamping jaws 52 clamp the square tube 6 and fix it. During the operation of the laser welding gun 4, the rotating mechanism 55 drives the square tube 6 to rotate. When one side of the square tube 6 is welded, the rotating mechanism 55 drives the square tube 6 to rotate 90 degrees to reach the other side to be welded, and the laser welding gun 4 continues the welding work, so that a linkage relationship is formed between the laser welding gun 4, the three-axis welding device 3 and the square tube edge sealing fixture 5.

[0025] Specifically, the rotating mechanism 55 includes a pair of rotating shaft seats 551 arranged on the welding machine platform 2, a turntable 552 arranged on the rotating shaft seat 551, a transmission gear 553 connected to the turntable 552, a drive gear 554 connected to the transmission gear 553 and a motor 555 connected to the drive gear 554. The rotating shaft seat 551 is used to support the turntable 552 and the transmission gear 553. The turntable 552 is fixedly connected to the transmission gear 553 and rotates synchronously. The fixed platform 51 is connected between the pair of rotating shaft seats 551. Generally, the fixed platform 51 is directly fixedly connected to the turntable 552 and rotates parallel to the X-axis robot arm 31 with the turntable 552. The transmission gear 553 produces a deceleration effect on the drive gear 554, thereby converting the high-speed and low-torque output of the motor 555 into a low-speed and high-torque output.

[0026] In order to adapt to the edge sealing of square tubes 6 of more different lengths, when the length of some square tubes 6 is longer than the distance between the two rotating shaft seats 551, in order to be able to perform edge sealing processing on the square tube 6, a through-hole 556 is formed on the turntable 552 of the rotating shaft seat 551 away from the welding end, and a square tube 6 with a length longer than the distance between the two rotating shaft seats 551 is inserted into the through-hole 556. The edge sealing end of the square tube 6 is placed on one end of the laser welding gun 4 of the fixed table 51, and the other end of the square tube 6 passes through the turntable 552 on the rotating shaft seat 551 on the other side.

[0027] A synchronous transmission shaft 557 is provided between the two driving gears 554 of a pair of rotating shaft seats 551 . The synchronous transmission shaft 557 is connected to the motor 555 to enable the two driving gears 554 to rotate synchronously. The two driving gears 554 share one motor 555 .

[0028] In order to better position the square tube 6 at the end that needs edge sealing and not affect the operation of the laser welding gun 4, the fixed platform 51 is not in direct contact with the turntable 552 at one end of the laser welding gun 4, and the positioning block 54 is directly arranged on the fixed platform 51 at one end of the laser welding gun 4; or the positioning block 54 is arranged on the turntable 552, and the positioning block 54 is flush with one end of the fixed platform 51, and the positioning block 54 rotates synchronously with the turntable 552 and the fixed platform 51.

[0029] At this time, the fixing platform 51 is fixed to the turntable 552 at one end of the laser welding gun 4 via a cantilever connecting rod 56 , and the cantilever connecting rod 56 is fixedly connected to the side plane of the fixing platform 51 .

[0030] Specifically, the clamping jaws 52 include a clamping base 521 connected to the fixed platform 51, a cylinder 522 arranged in the clamping base 21, and a clamping plate 523 connected to the cylinder 522 and capable of telescopically moving up and down relative to the surface of the fixed platform 51. Driven by the cylinder 522, the clamping plate 523 can press and fix the square tube 6 on the fixed platform 51; a plurality of the clamping jaws 52 are arranged in a straight line along one side of the fixed platform 51, and generally the clamping jaws 52 and the positioning bar 53 are on the same side.

[0031] The square tube edge sealing fixture 5 also includes a material return device 57 arranged on the welding machine platform 2, and the material return device 57 includes a push rod 571 that can move telescopically forward and backward and a two-axis moving device connected to the push rod 571. The two-axis moving device includes a Y-axis moving part 572 and a Z-axis moving part 573. The push rod 571 is connected to the Y-axis moving part 572. After the edge sealing of the square tube 6 is completed, the fixed table 51 rotates to restore its original position, and the push rod 571 extends toward the fixed table 51 to push the square tube 6 out.

[0032] Working principle:

[0033] The square tube 6 is placed on the fixing table 51 , and the radial position of the square tube 6 is limited by the positioning strip 53 , the axial position of the square tube 6 is limited by the positioning block 54 , and the square tube 6 is fixed on the fixing table 51 by the clamping jaws 52 .

[0034] The laser welding gun 4 performs edge sealing welding on one side of the square tube 6 under the linkage of the X-axis robot 31 , the Y-axis robot 33 and the Z-axis robot 32 of the three-axis welding device 3 .

[0035] After completing the edge welding of one side of the square tube 6, the rotating mechanism 55 drives the fixed platform 51 to rotate. Specifically, the motor 555 rotates to rotate the synchronous transmission shaft 557, and the synchronous transmission shaft 557 drives the two driving gears 554 to rotate. The two driving gears 554 respectively correspond to the transmission gears 553 in the two rotating shaft seats 551 to rotate, and the turntable 552 is driven to rotate through the transmission gear 553. Finally, the fixed platform 51 is driven to rotate through the turntable 552. During this process, the square tube 6 rotates with the fixed platform 51 and moves to different edges to be sealed, and is linked with the laser welding gun 4 to perform edge welding.

[0036] After completing the edge sealing of all edges, the fixing table 51 rotates back to its original position, the clamping jaws 52 release the square tube 6, and the square tube 6 can be pushed out through the material withdrawal device 57.

Claims

1. A laser welding platform with a square tube edge-sealing fixture, comprising a welding machine base, a welding machine platform disposed on the upper surface of the welding machine base, a three-axis welding device disposed on the welding machine platform, and a laser welding gun disposed on the three-axis welding device, wherein the three-axis welding device includes an X-axis robot arm for lateral translation, a Z-axis robot arm for vertical lifting, and a Y-axis robot arm for forward and backward translation, connected in sequence. The invention is characterized in that: It also includes a square tube edge sealing fixture arranged on the welding machine platform, the square tube edge sealing fixture includes a fixed platform arranged on the welding machine platform for placing the square tube, a plurality of clamps arranged on the fixed platform, a positioning bar for radially limiting the square tube and a positioning block for axially limiting the square tube, and a rotating mechanism for rotating the fixed platform, the positioning bar is arranged on one side of the fixed platform, and the rotation axis of the rotating mechanism is parallel to the X-axis robotic arm.

2. The laser welding platform with a square tube edge sealing fixture according to claim 1, characterized in that: The rotating mechanism includes a pair of rotating shaft seats arranged on the welding machine platform, a turntable arranged on the rotating shaft seat, a transmission gear connected to the turntable, a driving gear connected to the transmission gear and a motor connected to the driving gear. The fixed platform is connected between the pair of rotating shaft seats and rotates with the turntable parallel to the X-axis robotic arm.

3. The laser welding platform with a square tube edge sealing fixture according to claim 2, characterized in that: A through hole is formed on the turntable at one end of the rotating shaft seat away from the welding end, and a square tube with a length longer than the distance between the two rotating shaft seats is inserted into the through hole.

4. The laser welding platform with a square tube edge sealing fixture according to claim 2, characterized in that: A synchronous transmission shaft is provided between the two driving gears of a pair of the rotating shaft seats, and the synchronous transmission shaft is connected to the motor to enable the two driving gears to rotate synchronously.

5. The laser welding platform with a square tube edge sealing fixture according to claim 2, characterized in that: The positioning block is arranged on the turntable, is flush with one end of the fixing table, and rotates synchronously with the turntable and the fixing table.

6. A laser welding platform with a square tube edge sealing fixture according to claim 2 or 5, characterized in that: The fixing platform is fixed to the turntable at one end of the laser welding gun through a cantilever connecting rod, and the cantilever connecting rod is fixedly connected to the side plane of the fixing platform.

7. The laser welding platform with a square tube edge sealing fixture according to claim 1, characterized in that: The square tube edge sealing fixture also includes a material stripping device arranged on the welding machine platform, the material stripping device includes a push rod that can move telescopically forward and backward and a two-axis moving device connected to the push rod, the two-axis moving device includes a Y-axis moving part and a Z-axis moving part, and the push rod is connected to the Y-axis moving part.

8. The laser welding platform with a square tube edge sealing fixture according to claim 1, characterized in that: The clamping claw comprises a clamping seat connected to a fixing platform, a cylinder arranged in the clamping seat, and a clamping plate connected to the cylinder and capable of telescopically moving up and down relative to a surface of the fixing platform.

9. The laser welding platform with a square tube edge sealing fixture according to claim 8, characterized in that: The plurality of clamping claws are arranged in a straight line along one side of the fixing platform.

Images