A welding robot

Abstract

The present invention relates to the technical field of welding robots, and discloses a welding robot, including a workbench and a first chute opened in the middle of the front side of the workbench. A rotary motor (first motor) is fixedly installed on the right side of the workbench. The sliding assembly includes: the output end of the first motor penetrates through the workbench and is rotatably connected with a bidirectional lead screw. In the present invention, when the first motor is started to rotate the bidirectional lead screw, while the bidirectional lead screw rotates, it drives two threaded connection blocks and the moving plate to approach each other so that the welding positions at both ends of the exhaust pipe are aligned. While the two fixed blocks approach each other, it drives the second gear to engage with the rack so that the second gear rotates and drives the threaded rod, the threaded sleeve and the connecting sleeve to move forward. The forward movement of the connecting sleeve drives the moving plate to approach the fixed plate, and then the exhaust pipe placed inside is clamped by the second clamping plate and the first clamping plate, which can avoid errors during welding and make the weld uneven.

Description

Technical Field

[0001] The present invention relates to the technical field of welding robots, and specifically relates to a welding robot. Background Art

[0002] Welding robots are widely used in various fields of manufacturing, including automobile manufacturing, aerospace, electronics, metal processing, etc. Specific applications include automobile manufacturing, where welding robots can be used for welding the body of an automobile, welding engine components, and welding the chassis.

[0003] Currently, welding robots play an important role in the welding of exhaust pipes in automobile manufacturing. When welding robots perform exhaust pipe welding, in most cases, two exhaust pipe ends are directly aligned and fixed by manual labor before welding. The operation process is relatively slow. Moreover, when manual alignment and fixation are carried out for a long time, it is inevitable that errors will occur during welding of the exhaust pipes, resulting in uneven weld seams. In addition, since the exhaust pipe is in an arc shape, after one side is welded, manual labor is still required to flip it over for welding on the other side, increasing the labor force.

[0004] In view of the above problems, a welding robot is proposed. Utility Model Content

[0005] The purpose of the present invention is to provide a welding robot, which solves the problems in the background art that in most cases, two exhaust pipe ends are directly aligned and fixed by manual labor before welding, the operation process is relatively slow, and when manual alignment and fixation are carried out for a long time, it is inevitable that errors will occur during welding of the exhaust pipes, resulting in uneven weld seams. In addition, since the exhaust pipe is in an arc shape, after one side is welded, manual labor is still required to flip it over for welding on the other side, increasing the labor force.

[0006] To achieve the above object, the present invention provides the following technical solution: A welding robot, including a workbench, a first motor fixedly installed on the right side of the workbench, and a sliding assembly. The sliding assembly includes a first motor, a bidirectional lead screw, and threaded connection blocks. The output end of the first motor penetrates through the workbench and is rotatably connected to the bidirectional lead screw. A first chute is provided in the middle of the front side of the workbench. Threaded connection blocks are threadedly connected to the left and right sides of the middle part of the outer wall of the bidirectional lead screw, and the threaded connection blocks cooperate with the first chute. Fixed blocks are fixedly connected to the front sides of the threaded connection blocks. Fixed plates are fixedly connected to the front sides of the tops of the fixed blocks. A first clamping plate is fixedly connected to the top of the fixed plate. A sliding groove is provided in the top of the fixed block. A first slider is slidably connected to the inside of the sliding groove. A moving plate is fixedly connected to the top of the first slider. A second clamping plate is fixedly connected to the top of the moving plate. A connecting block is installed on the rear side of the left second clamping plate. A second motor is installed and connected to the upper right side of the connecting block. The output end of the second motor penetrates through the connecting block and is provided with a rotating assembly. Through the rotating assembly, the exhaust pipe can be flipped to weld the other side. A compression groove is provided in the lower part of the relative side of the second clamping plate and the first clamping plate. A limiting assembly is provided inside the compression groove. A second gear is rotatably connected through the inside of the rear side of the threaded connection block. A rack is meshed and connected to the top of the second gear. The top of the rack is fixedly connected to the inner top of the first chute. At the rear, a moving assembly is provided on the front side of the second gear;

[0007] As a further description of the above technical solution: The rotating assembly includes a rotating shaft. Rotating shafts are rotatably connected to the upper and lower parts of the inside of the connecting block. The right side of the upper rotating shaft penetrates through the connecting block and is fixedly connected to the output end of the second motor. Synchronous wheels are fixedly connected to the middle parts of the outer walls of the two rotating shafts. A synchronous belt is meshed and connected to the outer walls of the two synchronous wheels. First gears are fixedly connected to the left sides of the two rotating shafts and are rotatably connected inside the bidirectional lead screw. Second chutes are provided on the adjacent sides of the two first clamping plates and the second clamping plates. Clamping moving plates are slidably connected to the inside of the two first clamping plates and the second clamping plates. Connecting grooves are provided on the relatively far sides of the four clamping moving plates. Uniformly distributed rollers are rotatably connected to the inside of the connecting grooves and the rollers cooperate with the second chutes. Uniformly distributed tooth grooves are provided on the relatively far side of the left clamping moving plate and the tooth grooves cooperate with the first gear;

[0008] As a further description of the above technical solution: The limiting assembly includes a first spring. The first spring is fixedly connected to the inner bottom of the compression groove. A limiting plate is fixedly connected to the top of the first spring. The top of the limiting plate penetrates through the second clamping plate and the first clamping plate and is fixedly connected to a limiting block and the limiting block cooperates with the clamping moving plate;

[0009] As a further description of the above technical solution: The moving component includes a threaded rod fixedly connected to the front side of the second gear. The outer wall of the threaded rod is threadedly connected to a threaded sleeve. The outer wall of the threaded sleeve is sleeved with a connecting sleeve, and the other end of the connecting sleeve is fixedly connected to the moving plate. On both the left and right sides of the outer wall of the threaded sleeve, there are fixedly connected second sliders. On both the left and right sides of the inner wall of the connecting sleeve, there are provided third chutes that cooperate with the second sliders. At the front side inside the connecting sleeve, there is fixedly connected a second spring that cooperates with the threaded sleeve;

[0010] As a further description of the above technical solution: On the opposite sides of the four clamping moving plates, there are provided anti-slip patterns, which make the exhaust pipe more stable during rotation;

[0011] As a further description of the above technical solution: At the front part of the top of the workbench, there is provided a feeding groove for placing the materials to be welded;

[0012] As a further description of the above technical solution: At the bottom of the workbench, there are fixedly connected uniformly distributed support feet for supporting the workbench;

[0013] As a further description of the above technical solution: At the rear side of the top of the workbench, there is installed a welding robotic arm;

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. For a welding robot provided by the present invention, first place the exhaust pipe to be welded between the first clamping plate and the second clamping plate, and then start the first motor to rotate the bidirectional lead screw. While the bidirectional lead screw rotates, it drives the two threaded connection blocks and the moving plate to approach each other to align the welding positions at both ends of the exhaust pipe. While the two fixed blocks approach each other, they drive the second gear to engage with the rack to rotate the second gear. By rotating the second gear, it drives the threaded rod, the threaded sleeve, and the connecting sleeve to move forward. By the forward movement of the connecting sleeve, it drives the moving plate to approach the fixed plate, and then the second clamping plate and the first clamping plate clamp the exhaust pipe placed inside, which can quickly align and fix the exhaust pipe for welding, and can avoid generating errors during welding and making the weld uneven.

[0016] 2. For a welding robot provided by the present invention, first, when it is necessary to weld the other side after one side is welded, start the second motor to drive the rotating shaft to rotate. When the rotating shaft rotates, it drives the two rotating shafts to rotate simultaneously through the synchronous pulley and the synchronous belt, so that the two first gears rotate simultaneously. By the rotation of the first gear and the engagement with the tooth groove, and then through the sliding of the connecting groove in the second chute, the clamping moving plate rotates. When the clamping moving plate rotates, the exhaust pipe can be rotated by ninety degrees to weld the other side of the exhaust pipe, which can avoid the need for manual flipping of the exhaust pipe on the other side for welding after welding is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 Schematic diagram of the rack of the present invention;

[0019] Figure 3 Cross-sectional view of the threaded connection block of the present invention;

[0020] Figure 4 Schematic diagram of the sliding assembly of the present invention;

[0021] Figure 5 For the present invention Figure 3 Enlarged view at position A;

[0022] Figure 6 Schematic diagram of the roller of the present invention;

[0023] Figure 7 Schematic diagram of the second clamping plate of the present invention;

[0024] Figure 8 For the present invention Figure 7 Enlarged view at position B;

[0025] Figure 9 Schematic diagram of the bidirectional lead screw of the present invention;

[0026] Figure 10 For the present invention Figure 9 Enlarged view at position C;

[0027] Figure 11 Schematic diagram of the second spring of the present invention;

[0028] Figure 12 For the present invention Figure 11 Enlarged view at position D.

[0029] In the figure: 1, workbench; 2, first chute; 3, first motor; 301, bidirectional lead screw; 302, threaded connection block; 303, fixed block; 304, fixed plate; 305, sliding groove; 306, first slider; 307, moving plate; 308, first clamping plate; 309, second clamping plate; 310, connection block; 4, second motor; 401, rotating shaft; 402, synchronous pulley; 403, synchronous belt; 404, first gear; 405, clamping moving plate; 406, connection groove; 407, roller; 408, second chute; 409, tooth groove; 410, anti-slip pattern; 5, compression groove; 501, first spring; 502, limiting plate; 503, limiting block; 6, second gear; 601, rack; 602, threaded rod; 603, threaded sleeve; 604, second slider; 605, connection sleeve; 606, third chute; 607, second spring; 7, material feeding groove; 8, welding robotic arm; 9, support feet. Detailed implementation manner

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] To further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

[0032] Combined with Figure 1 , Figure 2 , Figure 3 , and Figure 4 , including, workbench 1, a material feeding groove 7 is opened at the front part of the top of the workbench 1, which can place the materials to be welded. Uniformly distributed support feet 9 are fixedly connected to the bottom of the workbench 1 for supporting the workbench 1, and a welding robotic arm 8 is installed at the rear side of the top of the workbench 1.

[0033] Combined with, Figure 2 , Figure 3 and Figure 4, a sliding component, the sliding component includes; a first motor 3, a bidirectional lead screw 301, and threaded connection blocks 302. The output end of the first motor 3 penetrates through the workbench 1 and is rotatably connected to the bidirectional lead screw 301. The outer wall of the bidirectional lead screw 301 is threadedly connected to the threaded connection blocks 302 on the left and right sides of the middle part, and the threaded connection blocks 302 cooperate with the first sliding groove 2. When the first motor 3 is turned on to rotate the bidirectional lead screw 301, while the bidirectional lead screw 301 is rotating, it drives the two threaded connection blocks 302 to approach the moving plate 307 to align the welding positions at both ends of the exhaust pipe. Fixed blocks 303 are fixedly connected to the front sides of the threaded connection blocks 302. Fixed plates 304 are fixedly connected to the front sides of the tops of the fixed blocks 303. A first clamping plate 308 is fixedly connected to the top of the fixed plate 304. A sliding groove 305 is opened at the top of the fixed block 303. A first slider 306 is slidably connected to the inside of the sliding groove 305. A moving plate 307 is fixedly connected to the top of the first slider 306. A second clamping plate 309 is fixedly connected to the top of the moving plate 307. A connecting block 310 is installed at the rear side of the second clamping plate 309 on the left. While the connecting sleeve 605 moves forward, it drives the moving plate 307 to approach the fixed plate 304, and then the exhaust pipe placed inside is clamped by the second clamping plate 309 and the first clamping plate 308.

[0034] Combined with Figure 3 , Figure 5 and Figure 6, the second motor 4 is installed and connected to the upper right side of the connecting block 310. The output end of the second motor 4 penetrates through the connecting block 310 and is provided with a rotating assembly. The exhaust pipe can be flipped by the rotating assembly to weld the other side. The rotating assembly includes: a rotating shaft 401. The upper and lower parts inside the connecting block 310 are both rotatably connected to the rotating shaft 401. The right side of the upper rotating shaft 401 penetrates through the connecting block 310 and is fixedly connected to the output end of the second motor 4. Synchronous wheels 402 are fixedly connected to the middle parts of the outer walls of the two rotating shafts 401. A synchronous belt 403 is meshed and connected to the outer walls of the two synchronous wheels 402. First gears 404 are fixedly connected to the left sides of the two rotating shafts 401 and are rotatably connected inside the bidirectional lead screw 301. Second chutes 408 are opened on the adjacent sides of the two first clamping plates 308 and the second clamping plate 309. Clamping moving plates 405 are slidably connected inside the two first clamping plates 308 and the second clamping plate 309. Tooth grooves 409 are provided on the two moving plates 405 on the left side and not on the two moving plates 405 on the right side. Connecting grooves 406 are opened on the relatively far sides of the four clamping moving plates 405. Uniformly distributed rollers 407 are rotatably connected inside the connecting grooves 406 and the rollers 407 cooperate with the second chutes 408. When the second motor 4 is started to drive the rotating shaft 401 to rotate, when the rotating shaft 401 rotates, the two rotating shafts 401 are simultaneously driven to rotate through the synchronous wheels 402 and the synchronous belt 403, so that the two first gears 404 rotate simultaneously. Through the rotation of the first gear 404 and the engagement with the tooth groove 409, and then through the sliding of the connecting groove 406 in the second chute 408, the clamping moving plate 405 rotates. When the clamping moving plate 405 rotates, the exhaust pipe can be rotated by ninety degrees to weld the other side of the exhaust pipe.

[0035] Combined with Figure 6 , uniformly distributed tooth grooves 409 are opened on the relatively far side of the left clamping moving plate 405 and the tooth grooves 409 cooperate with the first gear 404. Anti-slip lines 410 are provided on the relatively side of the four clamping moving plates 405. Through the anti-slip lines 410, the exhaust pipe is more stable during the rotation process.

[0036] Combined with Figure 7 and Figure 8, compression groove 5. Compression grooves 5 are provided at the lower parts on the opposite sides of the second clamping plate 309 and the first clamping plate 308. A limiting component is arranged inside the compression groove 5. The limiting component includes: a first spring 501. The first spring 501 is fixedly connected to the inner bottom of the compression groove 5. The top of the first spring 501 is fixedly connected to a limiting plate 502. The top of the limiting plate 502 penetrates through the second clamping plate 309 and the first clamping plate 308 and is fixedly connected to a limiting block 503, and the limiting block 503 cooperates with the clamping moving plate 405. When the clamping moving plate 405 rotates, it drives the limiting block 503 to be compressed into the compression groove 5 through the first spring 501. When not in use, the limiting block 503 will rebound through the first spring 501 to limit the clamping moving plate 405 to prevent the clamping moving plate 405 from falling off.

[0037] Combined, Figure 9 , Figure 10 , and Figure 12 , second gear 6. The rear side inside of the threaded connection block 302 penetrates and is rotatably connected to the second gear 6. A rack 601 is meshed and connected to the top of the second gear 6. The top of the rack 601 is fixedly connected to the inner top of the first chute 2. At the rear, a moving component is arranged on the front side of the second gear 6. The moving component includes: a threaded rod 602. The threaded rod 602 is fixedly connected to the front side of the second gear 6. A threaded sleeve 603 is threadedly connected to the outer wall of the threaded rod 602. A connecting sleeve 605 is sleeved on the outer wall of the threaded sleeve 603, and the other end of the connecting sleeve 605 is fixedly connected to the moving plate 307. Second sliders 604 are fixedly connected to the left and right sides of the outer wall of the threaded sleeve 603. Third chutes 606 are provided on the left and right sides of the inner wall of the connecting sleeve 605, and the third chutes 606 cooperate with the second sliders 604. While the two fixed blocks 303 approach each other, they drive the second gear 6 to mesh with the rack 601 to make the second gear 6 rotate. When the second gear 6 rotates to drive the threaded rod 602 to rotate, the threaded sleeve 603 moves forward. By sliding the second slider 604 in the third chute 606, it is prevented that the threaded sleeve 603 rotates while the threaded rod 602 rotates. When the threaded sleeve 603 moves forward, it will contact the second spring 607 inside the connecting sleeve 605 to make the connecting sleeve 605 move forward. While the connecting sleeve 605 moves forward, it drives the moving plate 307 to approach the fixed plate 304, and then the exhaust pipe placed inside is clamped by the second clamping plate 309 and the first clamping plate 308.

[0038] Combined, Figure 11 , a second spring 607 is fixedly connected to the front side inside of the connecting sleeve 605. The second spring 607 plays a buffering role to prevent damage to the exhaust pipe due to excessive clamping force during the alignment movement. The second spring 607 cooperates with the threaded sleeve 603. By the threaded sleeve 603 contacting the second spring 607, the connecting sleeve 605 is made to move forward.

[0039] Working principle:

[0040] 1. First, place the exhaust pipe to be welded between the first clamping plate 308 and the second clamping plate 309, then turn on the first motor 3 to rotate the bidirectional screw rod 301. When the bidirectional screw rod 301 rotates, the two threaded connection blocks 302 and the movable plate 307 are driven to approach each other so that the welding positions at both ends of the exhaust pipe are aligned. When the two fixed blocks 303 approach each other, the second gear 6 is driven to mesh with the rack 601 to rotate the second gear 6. When the threaded rod 602 rotates due to the rotation of the second gear 6, the threaded sleeve 603 moves forward, and the second slider 604 is moved in the third The sliding in the slide groove 606 prevents the threaded sleeve 603 from rotating while the threaded rod 602 rotates. When the threaded sleeve 603 moves forward, it will contact the second spring 607 inside the connecting sleeve 605, causing the connecting sleeve 605 to move forward. When the connecting sleeve 605 moves forward, it drives the movable plate 307 to approach the fixed plate 304, and then clamps the exhaust pipe prevented from inside through the second clamping plate 309 and the first clamping plate 308. The second spring 607 acts as a buffer to prevent excessive clamping force from causing damage to the exhaust pipe during the alignment movement.

[0041] 2. When welding one side after completing welding, the other side needs to be welded, the second motor 4 is turned on to drive the rotating shaft 401 to rotate. When the rotating shaft 401 rotates, the synchronous wheel 402 and the synchronous belt 403 simultaneously drive the two rotating shafts 401 to rotate, so that the two first gears 404 rotate simultaneously, and the first gear 404 rotates to engage with the tooth groove 409, and then slides in the second slide groove 408 through the connecting groove 406 to rotate the clamping movable plate 405. When the clamping movable plate 405 rotates, the exhaust pipe can be rotated ninety degrees to weld the other side of the exhaust pipe. The anti-slip groove 410 makes the exhaust pipe more stable during the rotation process. When the clamping movable plate 405 rotates, it drives the limit block 503 to be compressed into the compression groove 5 through the first spring 501. When not in use, the limit block 503 will rebound through the first spring 501 to limit the clamping movable plate 405 to prevent the clamping movable plate 405 from falling.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding robot, characterized in that: include Workbench (1); A first motor (3) is fixedly mounted on the right side of the workbench (1); A sliding assembly, the sliding assembly comprising: a first motor (3), a bidirectional screw rod (301), and a threaded connection block (302); the output end of the first motor (3) passes through a workbench (1) and is rotatably connected to the bidirectional screw rod (301); a first slide groove (2) is provided in the middle of the front side of the workbench (1); the threaded connection blocks (302) are threadedly connected to the left and right sides of the middle of the outer wall of the bidirectional screw rod (301); the threaded connection blocks (302) are matched with the first slide groove (2); the front sides of the threaded connection blocks (302) are fixedly connected to the fixed blocks (302); 3) The top front side of the fixed block (303) is fixedly connected to a fixed plate (304), the top of the fixed plate (304) is fixedly connected to a first clamping plate (308), a sliding groove (305) is provided on the top of the fixed block (303), a first sliding block (306) is slidably connected inside the sliding groove (305), a moving plate (307) is fixedly connected to the top of the first sliding block (306), a second clamping plate (309) is fixedly connected to the top of the moving plate (307), and a connecting block (310) is installed on the rear side of the left second clamping plate (309); a second motor (4), the second motor (4) being mounted and connected to the upper right side of the connection block (310), the output end of the second motor (4) passing through the connection block (310) and being provided with a rotating assembly, through which the exhaust pipe can be turned over to weld the other side; A compression groove (5), wherein the second clamping plate (309) and the first clamping plate (308) are provided with a compression groove (5) at their lower parts on one side opposite to the second clamping plate (309), and a limiting component is provided inside the compression groove (5); The second gear (6) is penetrated and rotatably connected to the rear side of the threaded connection block (302), the top of the second gear (6) is meshedly connected to the rack (601), the top of the rack (601) is fixedly connected to the top of the inside of the first slide groove (2), and a moving component is arranged at the rear and front side of the second gear (6).

2. A welding robot according to claim 1, characterized in that: The rotating assembly comprises: a rotating shaft (401), the upper and lower parts of the interior of the connecting block (310) are both rotatably connected to the rotating shaft (401), the right side of the upper rotating shaft (401) passes through the connecting block (310) and is fixedly connected to the output end of the second motor (4), the middle parts of the outer walls of the two rotating shafts (401) are both fixedly connected to synchronous wheels (402), the outer walls of the two synchronous wheels (402) are meshedly connected to synchronous belts (403), the left sides of the two rotating shafts (401) are both fixedly connected to first gears (404) and the first gears (404) are rotatably connected inside the bidirectional screw rod (301), and the two first clamping plates (308 ) and the adjacent side of the second clamping plate (309) are provided with a second sliding groove (408), the inside of the two first clamping plates (308) and the second clamping plates (309) are slidably connected with a clamping movable plate (405), and the relatively distant side of the four clamping movable plates (405) are provided with a connecting groove (406), the inside of the connecting groove (406) is rotatably connected with evenly distributed rollers (407) and the rollers (407) cooperate with the second sliding groove (408), and the relatively distant side of the left clamping movable plate (405) is provided with evenly distributed tooth grooves (409) and the tooth grooves (409) cooperate with the first gear (404).

3. A welding robot according to claim 1, characterized in that: The limiting assembly comprises: a first spring (501), the first spring (501) is fixedly connected to the inner bottom of the compression groove (5), the top of the first spring (501) is fixedly connected to the limiting plate (502), the top of the limiting plate (502) passes through the second clamping plate (309) and the first clamping plate (308) and is fixedly connected to the limiting block (503), and the limiting block (503) cooperates with the clamping movable plate (405).

4. A welding robot according to claim 1, characterized in that: The moving assembly comprises a threaded rod (602), the threaded rod (602) being fixedly connected to the front side of the second gear (6), the outer wall of the threaded rod (602) being threadedly connected to a threaded sleeve (603), the outer wall of the threaded sleeve (603) being sleeved with a connecting sleeve (605), and the other end of the connecting sleeve (605) being fixedly connected to the moving plate (307), the left and right sides of the outer wall of the threaded sleeve (603) being fixedly connected to second sliders (604), the left and right sides of the inner wall of the connecting sleeve (605) being provided with third sliding grooves (606), and the third sliding grooves (606) being matched with the second sliders (604), and the inner front side of the connecting sleeve (605) being fixedly connected to a second spring (607), and the second spring (607) being matched with the threaded sleeve (603).

5. A welding robot according to claim 2, characterized in that: Anti-skid grooves (410) are provided on opposite sides of the four clamping movable plates (405), and the anti-skid grooves (410) make the exhaust pipe more stable during the rotation process.

6. A welding robot according to claim 1, characterized in that: The top front portion of the workbench (1) is provided with a material discharge trough (7) for placing unwelded materials.

7. A welding robot according to claim 1, characterized in that: The bottom of the workbench (1) is fixedly connected with evenly distributed supporting feet (9) for supporting the workbench (1).

8. A welding robot according to claim 2, characterized in that: A welding robot arm (8) is installed on the top rear side of the workbench (1).

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