A dual-station welding positioning mechanism for a motorhome chassis

Abstract

The present invention relates to the technical field of welding equipment, and discloses a dual-station welding positioning mechanism for a motorhome chassis, comprising a workbench, a welding robot arranged on the workbench, and welding tables arranged on both sides of the workbench, wherein a positioning device and a rotating device are arranged on the welding table, and a transmission assembly is arranged between the positioning device and the rotating device; the positioning device comprises a plurality of pairs of top plates and a control member; the rotating device comprises a bearing plate and a rotating member for controlling the rotation of the bearing plate, and a driving member is arranged between a connecting column and the positioning devices on the welding tables on both sides. The present invention drives the positioning devices and the rotating devices on both sides to run in the opposite direction through the driving member, so that the positioning device no longer fixes the welded workpiece, and the workpiece is stored through the rotating device, and the positioning device on the other side positions and fixes the unwelded workpiece, thereby solving the problem that the welding robot is difficult to realize the functions of fast unloading and positioning of the workpiece during the conversion welding of the two workpieces on the dual-station.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to a double-station welding positioning mechanism for a motorhome chassis. Background Art

[0002] Dual-station welding refers to working on two completely identical welding stations on one piece of equipment to achieve the purpose of completing two processes at the same time. When the welding robot is welding the workpieces to be welded on the stations on both sides, when the robot is processing the workpiece on the welding station on one side, manual work is required to unload, load and position the workpiece on the welding station on the other side. The operation process is relatively complicated, and it is difficult to realize the welding robot's function of quickly unloading and positioning the workpiece during the conversion process. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0004] A dual-station welding positioning mechanism for a motorhome chassis, comprising a workbench, a welding robot arranged on the workbench, and welding tables arranged on both sides of the workbench, wherein a positioning device and a rotating device are arranged on the welding table, and a transmission assembly is arranged between the positioning device and the rotating device;

[0005] Storage bins are fixedly installed on both sides of the top of the workbench, the welding table is fixedly installed on the top of the storage bins, a base is fixedly installed on the top of the workbench, the base is arranged between the two welding tables, a connecting column is fixedly installed between the base and the welding robot, and the connecting column drives the welding robot to rotate;

[0006] The positioning device includes multiple pairs of top plates and control components. The multiple pairs of top plates are respectively arranged around the welding table. An adjustment component is arranged on one side of the top plate. The control component is arranged at the bottom edge of the welding table. The control component drives the multiple pairs of top plates to move synchronously at the same time, and the adjustment component drives the top plates to move.

[0007] The rotating device includes a carrying plate and a rotating member for controlling the rotation of the carrying plate, wherein the carrying plate is installed in the middle of the welding table, and the rotating member drives the carrying plate to rotate so that the welding parts on the top of the carrying plate are stored in the storage bin;

[0008] A driving member is arranged between the connecting column and the positioning devices on the welding tables on both sides, so that when the welding robot completes welding of the welding piece on the left and rotates toward the welding table on the right, it drives multiple pairs of the top plates to move backwards, and after the top plate is separated from the supporting plate, the rotating device drives the supporting plate to rotate, and at the same time the driving member drives the positioning device on the right side to position the welding piece, and the rotating device on the right side of the driving member stops running.

[0009] Preferably, the adjusting member includes a sliding block and a first screw rod, sliding grooves are provided on all sides of the top of the welding table, the first screw rod is rotatably arranged in the sliding groove through a bearing, the sliding block is slidably arranged in the sliding groove, the sliding block is threadedly connected to the first screw rod, a rectangular table is provided on the top of the sliding block, a guide rail groove is provided at the bottom of the rectangular table, a guide rail block is fixedly connected to the top of the sliding block, the guide rail block is slidably arranged in the guide rail groove, a second screw rod is rotatably connected in the guide rail groove through a bearing, and the second screw rod is threadedly connected to the guide rail block.

[0010] Preferably, the second screw extends out of the rectangular table, and both ends of one side of the rectangular table are rotatably connected to the first gears through bearings, one of the first gears is fixedly connected to one end of the second screw, and a first toothed belt is sleeved on the outer circumference of the two first gears, a mounting plate is fixedly installed at one end of the rectangular table, a motor is fixedly connected to one side of the mounting plate, and the output end of the motor is fixedly connected to one of the first gears.

[0011] Preferably, an inner groove is provided on one side of the rectangular table, a circular block is slidably connected in the inner groove, a connecting rod is fixedly connected to one side of the circular block, a spring is fixedly connected to the other side of the circular block, one end of the connecting rod extends outside the rectangular table and is fixedly connected to a vertical plate, the top plate is fixedly installed on one side of the vertical plate and the bottom surface is in contact with the top surface of the welding table, and anti-slip teeth are provided on one side of the top plate.

[0012] Preferably, the control member includes a plurality of rotating rods, and the plurality of rotating rods are respectively arranged at the edges around the bottom of the welding platform, the rotating rods are rotatably connected to the welding platform through bearing seats, first worms are fixedly connected to both sides of the outer periphery of the rotating rods, a first worm wheel is fixedly connected to one side of the outer periphery of the first screw, the first worm wheel is arranged in a sliding groove, the first worm wheel is meshingly connected to the first worm, and a first bevel gear set is provided at the connecting ends of the plurality of rotating rods, and the two ends of the first bevel gear set are respectively fixedly connected to the ends of the two rotating rods, so that when one of the rotating rods rotates, the other rotating rods are driven to rotate.

[0013] Preferably, a fixed seat is fixedly connected to one side of the storage bin, a vertical rod is rotatably connected to the fixed seat and the welding table through a bearing, a second worm is fixedly connected to the top of the outer periphery of the vertical rod, a second worm wheel is fixedly connected to the middle part of the outer periphery of one of the rotating rods, and the second worm wheel is meshingly connected to the second worm.

[0014] Preferably, the rotating part includes a conversion part and a side rod, a through hole is opened at the top of the welding table, the supporting plate is rotatably arranged in the through hole through a bearing, a round rod is fixedly connected to one side of the supporting plate, an inner hole is opened at one end of the round rod, a movable rod is rotatably connected in the inner hole of the round rod through a bearing, the conversion part is arranged at the connection between the round rod and the movable rod, the side rod is rotatably connected between the fixed seat and the welding table through a bearing, a second bevel gear set is installed between the side rod and the movable rod, and two ends of the second bevel gear set are respectively fixedly connected to the side rod and one end of the movable rod.

[0015] Preferably, the conversion member includes a plurality of hinged plates, which are respectively installed on the outer periphery of the movable rod and hinged to the movable rod, a torsion spring is installed at the hinge between the hinge plate and the movable rod, the hinge plate is arranged in the inner hole, a baffle is fixedly connected to the inner wall of the inner hole, and the baffle is in contact with the hinge plate.

[0016] Preferably, the transmission assembly includes a second toothed belt, and second gears are provided at the bottom of the side rod and the vertical rod, wherein one of the second gears is fixedly connected to the side rod, and the other second gear is rotatably connected to the movable rod through a one-way bearing, and the second toothed belt is sleeved outside the two second gears and meshingly connected to the second gears.

[0017] Preferably, the driving member includes two transmission belts, one of which is sleeved on the top of the outer periphery of the connecting column and on the vertical rod on the left side of the connecting column, and the other is sleeved on the bottom of the outer periphery of the connecting column and on the vertical rod on the right side of the connecting column, so that when the connecting column rotates, the two transmission belts rotate in opposite directions.

[0018] Beneficial Effects

[0019] Compared with the prior art, the present invention provides a dual-station welding positioning mechanism for a motorhome chassis, which has the following beneficial effects:

[0020] 1. A double-station welding positioning mechanism for a motorhome chassis. When the welding robot finishes welding the workpiece on the left welding station and turns to the right welding station, the positioning device on the left welding station is driven to run in the reverse direction through the setting of the driving member, so that multiple pairs of top plates move backwards. At the same time, the setting of the transmission component drives the rotating device to run, and the workpiece on the welding station is stored in the storage bin. At the same time, the positioning device on the right welding station is driven to run forward, and the workpiece is positioned and fixed through the top plate, which solves the problem that the welding robot is difficult to realize the functions of fast unloading and positioning of the workpiece during the conversion welding of the two workpieces on the double station.

[0021] 2. A double-station welding positioning mechanism for a motorhome chassis, which can effectively adjust the position of a separate rectangular table on a welding table through a sliding connection between a guide block on the top of a sliding block and a guide groove at the bottom of a rectangular table, and a threaded connection between the guide block and a second screw, thereby adjusting the position between a single top plate and a workpiece, thereby adjusting the distance between the top plate and the workpiece before driving a control component to operate multiple pairs of top plates simultaneously, thereby making the device suitable for positioning workpieces of various shapes.

[0022] 3. A dual-station welding positioning mechanism for a motorhome chassis. After the workpiece on the left welding table is completed, the driving member first drives the positioning device to run in the reverse direction, so that multiple top plates are separated from the workpiece and the load-bearing plate. When the top plate is still on the top of the load-bearing plate, the rotating member is set by the conversion member so that the round rod does not move when the movable rod rotates, thereby avoiding the top plate from contacting the load-bearing plate. The load-bearing plate rotates, causing the load-bearing plate and the top plate to collide. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is one of the structural schematic diagrams of a double-station welding positioning mechanism for a motorhome chassis of the present invention;

[0024] Figure 2 This is a second structural schematic diagram of a dual-station welding positioning mechanism for a motorhome chassis of the present invention;

[0025] Figure 3 For the present invention Figure 2 Schematic diagram of the structure of the middle A part;

[0026] Figure 4 It is a schematic diagram of the control component structure of the present invention;

[0027] Figure 5 For the present invention Figure 4 Schematic diagram of the structure of the middle B part;

[0028] Figure 6 It is a schematic diagram of the transmission assembly structure of the present invention;

[0029] Figure 7 For the present invention Figure 6 Schematic diagram of the structure of the middle C part;

[0030] Figure 8 It is a schematic diagram of the structure of the rotating member of the present invention;

[0031] Fig. 9 For the present invention Figure 8 Schematic diagram of the structure of the middle D part.

[0032] In the figure: 1, workbench; 2, welding robot; 3, welding table; 4, positioning device; 5, rotating device; 6, transmission assembly; 7, storage bin; 8, base; 9, connecting column; 41, top plate; 42, control member; 43, adjusting member; 51, bearing plate; 52, rotating member; 0, driving member; 431, sliding block; 432, first screw; 433, sliding groove; 434, rectangular table; 435, guide groove; 436, guide block; 437, second screw; 438, first gear; 439, first toothed belt; 430, motor; 44, inner groove; 45, circular block; 4 6. connecting rod; 47. spring; 48. vertical plate; 49. anti-skid teeth; 421. rotating rod; 422. first worm; 423. first worm wheel; 424. first bevel gear set; 425. fixed seat; 426. vertical rod; 427. second worm; 428. second worm wheel; 521. conversion member; 522. side rod; 523. through hole; 524. round rod; 525. inner hole; 526. movable rod; 527. second bevel gear set; 5211. hinge plate; 5212. torsion spring; 5213. baffle; 61. second toothed belt; 62. second gear; 01. transmission belt. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a double-station welding positioning mechanism for a motorhome chassis.

[0035] Embodiment 1:

[0036] See also Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 8 A double-station welding positioning mechanism for a motorhome chassis comprises a workbench 1, a welding robot 2 arranged on the workbench 1, and welding tables 3 arranged on both sides of the workbench 1, a positioning device 4 and a rotating device 5 are arranged on the welding table 3, and a transmission component 6 is arranged between the positioning device 4 and the rotating device 5;

[0037] Storage bins 7 are fixedly installed on both sides of the top of the workbench 1, the welding table 3 is fixedly installed on the top of the storage bin 7, a base 8 is fixedly installed on the top of the workbench 1, the base 8 is arranged between the two welding tables 3, and a connecting column 9 is fixedly installed between the base 8 and the welding robot 2, and the connecting column 9 drives the welding robot 2 to rotate;

[0038] The positioning device 4 includes a plurality of pairs of top plates 41 and a control member 42. The plurality of pairs of top plates 41 are respectively arranged around the welding table 3. An adjusting member 43 is arranged on one side of the top plates 41. The control member 42 is arranged at the bottom edge of the welding table 3. The control member 42 drives the plurality of pairs of top plates 41 to move synchronously at the same time, and the adjusting member 43 drives the top plates 41 to move.

[0039] The rotating device 5 includes a carrying plate 51 and a rotating member 52 for controlling the rotation of the carrying plate 51. The carrying plate 51 is installed in the middle of the welding table 3. The rotating member 52 drives the carrying plate 51 to rotate so that the welding parts on the top of the carrying plate 51 are stored in the storage bin 7.

[0040] A driving member 0 is arranged between the connecting column 9 and the positioning devices 4 on the welding tables 3 on both sides, so that when the welding robot 2 completes welding of the welding piece on the left and rotates toward the welding table 3 on the right, it drives multiple pairs of top plates 41 to move backwards, and after the top plate 41 is separated from the supporting plate 51, the rotating device 5 drives the supporting plate 51 to rotate, and at the same time, the driving member 0 drives the positioning device 4 on the right to position the welding piece, and the rotating device 5 on the right side of the driving member 0 stops running.

[0041] Specifically, when the welding robot 2 finishes welding the workpiece on the left welding table 3 and rotates toward the right welding table 3, it drives the driving member 0 on the left side of the welding robot 2 to operate, and the driving member 0 drives the control member 42 to operate in the reverse direction, thereby driving multiple pairs of adjusting members 43 and the top plate 41 on one side of the adjusting member 43 to make opposite movements, so that the top plate 41 no longer fixes the workpiece, and at the same time, the driving member 0 drives the rotating member 52 to operate, thereby driving the bearing plate 51 to rotate, and during the rotation of the bearing plate 51, the workpiece on the surface of the bearing plate 51 is driven into the storage bin 7, and at the same time, the driving member 0 on the right side of the welding robot 2 operates, driving the control member 42 to operate in the forward direction, thereby driving multiple pairs of adjusting members 43 and the top plate 41 on one side of the adjusting member 43 to make relative movements, so that the top plate 41 positions and fixes the workpiece on all sides;

[0042] When the welding robot 2 finishes welding the workpiece on the left welding table 3 and turns to the right welding table 3, the positioning device 4 on the left welding table 3 is driven to run in the reverse direction through the setting of the driving component 0, so that multiple pairs of top plates 41 move backwards. At the same time, through the setting of the transmission component 6, the rotating device 5 is driven to run, and the workpiece on the welding table 3 is stored in the storage bin 7. At the same time, the positioning device 4 on the right welding table 3 is driven to run forward, and the workpiece is positioned and fixed through the top plate 41, which solves the problem that the welding robot 2 is difficult to realize the functions of fast unloading and positioning of the workpiece during the conversion welding of two workpieces on the double workstation.

[0043] Embodiment 2:

[0044] The difference from the above embodiment 1 is that, see Figure 2-Figure 7 For the above-mentioned positioning device 4, the adjusting member 43 includes a sliding block 431 and a first screw rod 432. Sliding grooves 433 are provided on all sides of the top of the welding platform 3. The first screw rod 432 is rotatably arranged in the sliding groove 433 through a bearing. The sliding block 431 is slidably arranged in the sliding groove 433. The sliding block 431 is threadedly connected with the first screw rod 432. A rectangular platform 434 is provided on the top of the sliding block 431. A guide groove 435 is provided on the bottom of the rectangular platform 434. A guide block 436 is fixedly connected to the top of the sliding block 431. The guide block 436 is slidably arranged in the guide groove 435. A second screw rod 437 is rotatably connected in the guide groove 435 through a bearing. The second screw 437 is threadedly connected with the guide block 436.

[0045] The second screw rod 437 extends to the outside of the rectangular platform 434, and both ends of one side of the rectangular platform 434 are rotatably connected to the first gears 438 through bearings, one of the first gears 438 is fixedly connected to one end of the second screw rod 437, and the outer circumferences of the two first gears 438 are sleeved with a first toothed belt 439, and a mounting plate is fixedly installed at one end of the rectangular platform 434, and a motor 430 is fixedly connected to one side of the mounting plate, and the output end of the motor 430 is fixedly connected to one of the first gears 438;

[0046] An inner groove 44 is provided on one side of the rectangular platform 434, a circular block 45 is slidably connected in the inner groove 44, a connecting rod 46 is fixedly connected to one side of the circular block 45, a spring 47 is fixedly connected to the other side of the circular block 45, one end of the connecting rod 46 extends to the outside of the rectangular platform 434 and is fixedly connected to a vertical plate 48, a top plate 41 is fixedly installed on one side of the vertical plate 48 and the bottom surface is in contact with the top surface of the welding platform 3, and an anti-slip tooth 49 is provided on one side of the top plate 41;

[0047] The control member 42 includes a plurality of rotating rods 421, which are respectively arranged at the edges of the bottom of the welding platform 3, and the rotating rods 421 are rotatably connected to the welding platform 3 through a bearing seat. The first worm 422 is fixedly connected to both sides of the outer periphery of the rotating rod 421, and the first worm wheel 423 is fixedly connected to one side of the outer periphery of the first screw 432. The first worm wheel 423 is arranged in the sliding groove 433, and the first worm wheel 423 is meshed and connected with the first worm 422. The connecting ends of the plurality of rotating rods 421 are provided with a first bevel gear set 424, and the two ends of the first bevel gear set 424 are respectively fixedly connected to the ends of the two rotating rods 421, so that when one of the rotating rods 421 rotates, the other rotating rods 421 are driven to rotate;

[0048] A fixed seat 425 is fixedly connected to one side of the storage bin 7, a vertical rod 426 is rotatably connected between the fixed seat 425 and the welding table 3 through a bearing, a second worm 427 is fixedly connected to the top of the outer periphery of the vertical rod 426, a second worm wheel 428 is fixedly connected to the middle of the outer periphery of one of the rotating rods 421, and the second worm wheel 428 is meshedly connected with the second worm 427;

[0049] Specifically, when the welding robot 2 completes processing of the workpiece on the left welding table 3 and rotates toward the right welding table 3, it drives the left driving member 0 to operate, thereby driving the vertical rod 426 to rotate, and through the meshing connection between the second worm 427 on the vertical rod 426 and the second worm gear 428 on one of the rotating rods 421, one of the rotating rods 421 is driven to rotate, and the end connections of the plurality of rotating rods 421 are all fixedly mounted with the first bevel gear set 424, so that the other rotating rods 421 are driven to rotate synchronously, and through the meshing connection between the second worm gear 427 on the vertical rod 426 and the second worm gear 428 on one of the rotating rods 421, the other rotating rods 421 are driven to rotate synchronously. The meshing connection between a worm 422 and a first worm wheel 423 on a first screw 432 drives the first screw 432 to rotate, and the threaded connection between the first screw 432 and the sliding block 431 drives the rectangular platform 434 and the top plate 41 on one side of the rectangular platform 434 to move in a direction away from the workpiece, so that the multiple top plates 41 no longer fix the workpiece, and at the same time, the welding robot 2 drives the right-side driving member 0 to operate, drives the right-side vertical rod 426 to rotate, and then drives the multiple rectangular platforms 434 and the top plate 41 on one side to move in a direction close to the workpiece;

[0050] When the shape of the workpiece is irregular, the first gear 438 of the motor 430 is rotated in advance, and the meshing connection between the first toothed belt 439 and the two first gears 438 drives the two first gears 438 to rotate, thereby driving the second screw 437 to rotate, and the threaded connection between the second screw 437 and the guide block 436 drives the guide block 436 and the bottom sliding block 431 to move, so as to adjust the position of the rectangular table 434 on the welding table 3. When part of the top plate 41 is not in contact with the workpiece, the control part 42 controls the multiple top plates 41 to continue to move relative to each other. At this time, the distance between the top plate 41 and the rectangular table 434 is controlled by the sliding connection between the connecting rod 46 on one side of the vertical plate 48 and the rectangular table 434, and the top plate 41 is fixed to the periphery of the workpiece by providing corresponding elastic force to one side of the top plate 41.

[0051] Embodiment three:

[0052] The difference from the above-mentioned embodiment 2 is that, see Figure 6-Figure 9 For the above-mentioned rotating device 5 and transmission assembly 6, the rotating member 52 includes a conversion member 521 and a side rod 522. A through hole 523 is provided on the top of the welding table 3. The bearing plate 51 is rotatably arranged in the through hole 523 through a bearing. A round rod 524 is fixedly connected to one side of the bearing plate 51. An inner hole 525 is provided at one end of the round rod 524. A movable rod 526 is rotatably connected in the inner hole 525 of the round rod 524 through a bearing. The conversion member 521 is arranged at the connection between the round rod 524 and the movable rod 526. The side rod 522 is rotatably connected between the fixed seat 425 and the welding table 3 through a bearing. A second bevel gear set 527 is installed between the side rod 522 and the movable rod 526. The two ends of the second bevel gear set 527 are fixedly connected to the side rod 522 and one end of the movable rod 526 respectively.

[0053] The conversion member 521 includes a plurality of hinged plates 5211, which are respectively installed on the outer periphery of the movable rod 526 and hinged to the movable rod 526. A torsion spring 5212 is installed at the hinge between the hinged plate 5211 and the movable rod 526. The hinged plate 5211 is arranged in the inner hole 525. A baffle 5213 is fixedly connected to the inner wall of the inner hole 525. The baffle 5213 contacts the hinged plate 5211.

[0054] The transmission assembly 6 includes a second toothed belt 61, and second gears 62 are provided at the bottom of the side rod 522 and the vertical rod 426, wherein one of the second gears 62 is fixedly connected to the side rod 522, and the other second gear 62 is rotatably connected to the movable rod 526 through a one-way bearing, and the second toothed belt 61 is sleeved outside the two second gears 62 and meshedly connected with the second gears 62;

[0055] Specifically, when the driving member 0 on the left side of the welding robot 2 is in operation, the vertical rod 426 is driven to rotate, and the side rod 522 is driven to rotate through the meshing connection between the second gear 62 at the bottom of the vertical rod 426 and the bottom of the side rod 522 and the second toothed belt 61. Since the second gear 62 at the bottom of the vertical rod 426 is connected to the vertical rod 426 through a one-way bearing, when the vertical rod 426 rotates at this time, the second gear 62 is driven to rotate. When the vertical rod 426 rotates in the opposite direction, the vertical rod 426 cannot drive the second gear 62 to rotate. The rotation of the side rod 522 drives the second bevel gear set 527 to rotate, thereby driving the movable rod 526 to rotate. When the top plate 41 moves in the direction away from the workpiece When the top plate 41 is detached from the supporting plate 51, the elastic force provided by the torsion spring 5212 at the connection between the hinge plate 5211 and the movable rod 526 causes the hinge plate 5211 to drive the baffle 5213 to rotate, thereby driving the round rod 524 to rotate, and further driving the supporting plate 51 to rotate, thereby rotating the workpiece on the top of the supporting plate 51 and storing it in the storage bin 7.

[0056] Embodiment 4:

[0057] The difference from the above-mentioned embodiment 3 is that, see Figure 8 For the above-mentioned driving member 0, the driving member 0 includes two transmission belts 01, one of which is sleeved on the top of the outer periphery of the connecting column 9 and on the vertical rod 426 located on the left side of the connecting column 9, and the other is sleeved on the bottom of the outer periphery of the connecting column 9 and on the vertical rod 426 located on the right side of the connecting column 9, so that when the connecting column 9 rotates, the two transmission belts 01 rotate in opposite directions;

[0058] Specifically, when the connecting column 9 rotates, the two transmission belts 01 are driven to rotate in opposite directions, so that the positioning device 4 and the rotating device 5 on both sides of the welding robot 2 run in opposite directions.

[0059] 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 dual-station welding positioning mechanism for a motorhome chassis, comprising a workbench, a welding robot disposed on the workbench, and welding tables disposed on both sides of the workbench, characterized in that: The welding table is provided with a positioning device and a rotating device, and a transmission component is provided between the positioning device and the rotating device; Storage bins are fixedly installed on both sides of the top of the workbench, the welding table is fixedly installed on the top of the storage bins, a base is fixedly installed on the top of the workbench, the base is arranged between the two welding tables, a connecting column is fixedly installed between the base and the welding robot, and the connecting column drives the welding robot to rotate; The positioning device includes multiple pairs of top plates and control components. The multiple pairs of top plates are respectively arranged around the welding table. An adjustment component is arranged on one side of the top plate. The control component is arranged at the bottom edge of the welding table. The control component drives the multiple pairs of top plates to move synchronously at the same time, and the adjustment component drives the top plates to move. The rotating device includes a carrying plate and a rotating member for controlling the rotation of the carrying plate, wherein the carrying plate is installed in the middle of the welding table, and the rotating member drives the carrying plate to rotate so that the welding parts on the top of the carrying plate are stored in the storage bin; A driving member is arranged between the connecting column and the positioning devices on the welding tables on both sides, so that when the welding robot completes welding of the left welding piece and rotates toward the right welding table, it drives multiple pairs of the top plates to move backwards, and after the top plates are separated from the carrying plate, the rotating device drives the carrying plate to rotate, and at the same time, the driving member drives the positioning device on the right side to position the welding piece, and the rotating device on the right side of the driving member stops running; The rotating member includes a conversion member and a side rod, a through hole is provided on the top of the welding table, the bearing plate is rotatably arranged in the through hole through a bearing, a round rod is fixedly connected to one side of the bearing plate, an inner hole is provided at one end of the round rod, a movable rod is rotatably connected in the inner hole of the round rod through a bearing, the conversion member is provided at the connection between the round rod and the movable rod, the side rod is rotatably connected between the fixed seat and the welding table through a bearing, a second bevel gear set is installed between the side rod and the movable rod, and two ends of the second bevel gear set are respectively fixedly connected to the side rod and one end of the movable rod; The conversion member includes a plurality of hinged plates, which are respectively installed on the outer periphery of the movable rod and hinged to the movable rod. A torsion spring is installed at the hinge between the hinged plate and the movable rod. The hinged plate is arranged in the inner hole. A baffle is fixedly connected to the inner wall of the inner hole, and the baffle is in contact with the hinged plate.

2. A dual-station welding positioning mechanism for a motorhome chassis according to claim 1, characterized in that: The adjusting member includes a sliding block and a first screw rod. Sliding grooves are provided on all sides of the top of the welding platform. The first screw rod is rotatably arranged in the sliding groove through a bearing. The sliding block is slidably arranged in the sliding groove. The sliding block is threadedly connected to the first screw rod. A rectangular platform is provided on the top of the sliding block. A guide rail groove is provided on the bottom of the rectangular platform. A guide rail block is fixedly connected to the top of the sliding block. The guide rail block is slidably arranged in the guide rail groove. A second screw rod is rotatably connected in the guide rail groove through a bearing. The second screw rod is threadedly connected to the guide rail block.

3. A dual-station welding positioning mechanism for a motorhome chassis according to claim 2, characterized in that: The second screw extends outside the rectangular platform, and both ends of one side of the rectangular platform are rotatably connected to the first gears through bearings, one of the first gears is fixedly connected to one end of the second screw, and a first toothed belt is sleeved on the outer periphery of the two first gears. A mounting plate is fixedly installed at one end of the rectangular platform, and a motor is fixedly connected to one side of the mounting plate, and the output end of the motor is fixedly connected to one of the first gears.

4. A dual-station welding positioning mechanism for a motorhome chassis according to claim 3, characterized in that: An inner groove is provided on one side of the rectangular table, a circular block is slidably connected in the inner groove, a connecting rod is fixedly connected to one side of the circular block, a spring is fixedly connected to the other side of the circular block, one end of the connecting rod extends outside the rectangular table and is fixedly connected to a vertical plate, the top plate is fixedly installed on one side of the vertical plate and the bottom surface is in contact with the top surface of the welding table, and anti-slip teeth are provided on one side of the top plate.

5. A dual-station welding positioning mechanism for a motorhome chassis according to claim 4, characterized in that: The control component includes a plurality of rotating rods, and the plurality of rotating rods are respectively arranged at the edges around the bottom of the welding platform, and the rotating rods are rotatably connected to the welding platform through bearing seats, and first worms are fixedly connected to both sides of the outer periphery of the rotating rods, and a first worm wheel is fixedly connected to one side of the outer periphery of the first screw, and the first worm wheel is arranged in a sliding groove, and the first worm wheel is meshed with the first worm, and a first bevel gear set is provided at the connecting ends of the plurality of rotating rods, and the two ends of the first bevel gear set are respectively fixedly connected to the ends of the two rotating rods, so that when one of the rotating rods rotates, the other rotating rods are driven to rotate.

6. A dual-station welding positioning mechanism for a motorhome chassis according to claim 5, characterized in that: A fixed seat is fixedly connected to one side of the storage bin, a vertical rod is rotatably connected to the fixed seat and the welding table through a bearing, a second worm is fixedly connected to the top of the outer periphery of the vertical rod, a second worm wheel is fixedly connected to the middle of the outer periphery of one of the rotating rods, and the second worm wheel is meshingly connected to the second worm.

7. The dual-station welding positioning mechanism for a motorhome chassis according to claim 1, characterized in that: The transmission assembly includes a second toothed belt, and second gears are provided at the bottom of the side rod and the vertical rod, one of the second gears is fixedly connected to the side rod, and the other second gear is rotatably connected to the movable rod through a one-way bearing, and the second toothed belt is sleeved outside the two second gears and meshingly connected to the second gears.

8. The dual-station welding positioning mechanism for a motorhome chassis according to claim 7, characterized in that: The driving member includes two transmission belts, one of which is sleeved on the top of the outer periphery of the connecting column and on the vertical rod on the left side of the connecting column, and the other is sleeved on the bottom of the outer periphery of the connecting column and on the vertical rod on the right side of the connecting column, so that when the connecting column rotates, the two transmission belts rotate in opposite directions.

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