Positioning device for welding automobile sheet metal parts

Abstract

The invention relates to the technical field of automobile sheet metal machining equipment, and discloses an automobile sheet metal part welding positioning device which comprises a device table body, a first mounting block is mounted at one end of the top of the device table body, a first clamping positioner is mounted at one end of the first mounting block, and a second mounting block is mounted at the other end of the top of the device table body; a second clamping positioner is mounted at one end of the second mounting block; and a sheet metal part placing plate is mounted in the middle of the top of the device table body. The positioning device for automobile sheet metal part welding is provided with a convenient adjusting structure, sheet metal parts of different sizes and different thicknesses can be effectively fixed and positioned, the sheet metal parts can be overturned or subjected to angle adjustment, and the performance of the positioning device can meet the use requirement for automobile sheet metal part machining.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile sheet metal processing equipment, and in particular relates to a positioning device for welding automobile sheet metal parts. Background Art

[0002] Automotive sheet metal refers to various parts made of metal materials (usually steel or aluminum) on the car body and chassis; these sheet metal parts play an important role in the structure, appearance and safety of the car; during the processing of automotive sheet metal parts, some sheet metal parts need to be assembled and welded using different parts, and during the welding process, the automotive sheet metal parts need to be fixed and positioned to ensure the stability of the welding.

[0003] The existing fixed positioning method for automobile sheet metal welding processing is mostly to place the sheet metal on the processing table, and then fix the sheet metal through a fixed structure. This fixed positioning method is relatively simple, and it cannot be conveniently and effectively adjusted for sheet metal of different sizes and thicknesses. It has poor adaptability and a small scope of use. At the same time, when the sheet metal is large and heavy, it cannot effectively flip or adjust the angle of the sheet metal, which lacks practicality. Therefore, improvements are needed to address the above problems. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a positioning device for welding automobile sheet metal parts, comprising a device platform, a first mounting block is installed at one end of the top of the device platform, a first clamping locator is installed at one end of the first mounting block, a second mounting block is installed at the other end of the top of the device platform, a second clamping locator is installed at one end of the second mounting block, and a sheet metal placement plate is installed in the middle of the top of the device platform.

[0005] Preferably, the first clamping locator and the second clamping locator both include a long plate and a rotating shaft, the rotating shaft is fixedly connected to the middle of one side of the long plate, and the two rotating shafts are respectively rotatably connected to the middle of the second mounting block of the first mounting block, grooves are equidistantly provided on opposite sides of the two long plates, scissor racks are installed inside the grooves, and rubber clamping protective pads are fixedly installed on both inner sides of the scissor racks located outside the grooves.

[0006] Preferably, the rubber clamping protection pad is located inside the groove and both ends are fixedly installed with adjustment blocks, the middle part of the two adjustment blocks is provided with a toggle groove, the inside of the groove is rotatably connected with a bidirectional threaded pin, the upper and lower parts of the bidirectional threaded pin are symmetrically threadedly connected with a threaded moving block, one side of the threaded moving block is in sliding contact with one side of the groove, and the other side of the threaded moving block is fixedly installed with a toggle pin, which is inserted into the inside of the toggle groove.

[0007] Preferably, the bottom of the bidirectional threaded pin extends to the bottom of the long plate and is fixedly installed with a first worm gear, the bottoms of the two long plates are rotatably connected to the first worm, the first worms at the bottoms of the two long plates are meshed with all the first worm gears at the bottoms of the long plates, one end of the two first worms is fixedly installed with a first bevel gear, one end of the bottom of the two long plates is rotatably connected to a second bevel gear meshed with the first bevel gear, and one end of the two second bevel gears is fixedly connected to the first gear.

[0008] Preferably, a long horizontal groove is opened on one side of the top of the device platform, and a first gear column is rotatably connected inside the long horizontal groove. The first gear column cooperates and meshes with the two first gears. A first forward and reverse motor is installed at one end of the device platform, and the output end of the first forward and reverse motor is fixedly connected to one end of the first gear column.

[0009] Preferably, a second worm gear is fixedly mounted on one end of the rotating shaft on the second mounting block, a second worm gear meshingly connected to the second worm gear is rotatably connected to one side of the second mounting block, and one end of the second worm gear is fixedly connected to the first rotating wheel.

[0010] Preferably, an adjustment groove is opened in the middle of the top of the device platform, and a two-way threaded shaft is rotatably connected inside the adjustment groove. Moving plates are symmetrically threaded on both sides of the two-way threaded shaft. Two adjustment rods are rotatably connected between the tops of the two moving plates and the bottom of the sheet metal placement plate. One end of the two-way threaded shaft extends to the outside of one side of the device platform and is fixedly connected to a second rotating wheel.

[0011] Preferably, a transmission cavity is opened in the middle of the device body, a sliding groove connected to the top of the device body is opened at one end of the top of the transmission cavity, a threaded shaft is rotatably connected inside the sliding groove, and a horizontal sliding block slidably installed inside the sliding groove is threadedly connected on the surface of the threaded shaft, and a second gear column is rotatably connected to the upper part of the transmission cavity, and a second forward and reverse motor and a third forward and reverse motor are installed at one end of the device body, and the output ends of the second forward and reverse motor and the third forward and reverse motor are respectively fixedly connected to one end of the threaded shaft and one end of the second gear column.

[0012] Preferably, a pair of inverted convex through grooves are provided on one side of the horizontal slider and the other end of the top of the transmission cavity, and an inverted T-shaped square adjusting rod is movably inserted into the interior of the two pairs of inverted convex through grooves, and a rack matching and meshingly connected to the second gear column is fixedly installed on one side of the four inverted T-shaped square adjusting rods, and the rack is located directly below the inside of the inverted convex through groove, and the tops of the two pairs of inverted T-shaped square adjusting rods are fixedly connected to the bottom of the first mounting block and the second mounting block, respectively.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: by arranging a long plate, a rotating shaft, a groove, a scissors frame, a rubber clamping protective pad, an adjusting block, a toggle groove, a bidirectional threaded pin, a threaded moving block, a toggle pin, a first worm wheel, a first worm, a first bevel gear, a second bevel gear, a first gear, a long horizontal groove, a first gear column, a second worm wheel, a second worm, a first rotating wheel, an adjusting groove, a bidirectional threaded shaft, a moving plate, an adjusting rod, a second rotating wheel, a transmission cavity, a sliding groove, a threaded shaft, a horizontal slider, a second gear column, an inverted convex through groove, an inverted T-shaped square adjusting rod and a rack, the present invention can realize the steam The positioning device for welding automobile sheet metal parts has a convenient adjustment structure, which can effectively adjust sheet metal parts of different sizes and thicknesses and firmly fix and position the sheet metal parts, thereby effectively improving the adaptability and scope of use of the device. At the same time, the device can flip or adjust the angle of the fixed sheet metal parts, thereby effectively improving the convenience and efficiency of sheet metal processing. In addition, the positioning device for welding automobile sheet metal parts has a simple structural design, is convenient and easy to use and operate, and is stable and reliable in processing and adjustment. Its performance can meet the use requirements of automobile sheet metal processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0015] In the attached picture:

[0016] Figure 1 This is a front view structural schematic diagram of the positioning device for welding automobile sheet metal parts of the present invention;

[0017] Figure 2 For the present invention Figure 1 A schematic cross-sectional structure diagram of;

[0018] Figure 3 For the present invention Figure 2 Schematic diagram of the local structure;

[0019] Figure 4 For the present invention Figure 2 A schematic cross-sectional structure diagram of;

[0020] Figure 5 It is a schematic diagram of the top view of the structure of the horizontal slider of the present invention;

[0021] Figure 6 For the present invention Figure 3 Schematic diagram of the local structure;

[0022] Figure 7 For the present invention Figure 6 A schematic diagram of a partial cross-sectional structure;

[0023] In the figure: 1, device body; 101, first forward and reverse motor; 102, second forward and reverse motor; 103, third forward and reverse motor; 2, first mounting block; 3, first clamping positioner; 4, second mounting block; 5, second clamping positioner; 6, sheet metal placement plate; 7, long plate; 8, rotating shaft; 9, groove; 10, scissor frame; 11, rubber clamping protective pad; 12, adjustment block; 13, toggle groove; 14, two-way threaded pin; 15, threaded moving block; 16, toggle pin; 17, first worm gear; 18, The first worm; 19, the first bevel gear; 20, the second bevel gear; 21, the first gear; 22, the long horizontal groove; 23, the first gear column; 24, the second worm gear; 25, the second worm; 26, the first rotating wheel; 27, the adjusting groove; 28, the bidirectional threaded shaft; 29, the moving plate; 30, the adjusting rod; 31, the second rotating wheel; 32, the transmission cavity; 33, the sliding groove; 34, the threaded shaft; 35, the horizontal slider; 36, the second gear column; 37, the inverted convex through groove; 38, the inverted T-shaped square adjusting rod; 39, the rack. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Embodiment 1, by Figures 1 to 7 The present invention comprises a device body 1, a first mounting block 2 is mounted on one end of the top of the device body 1, a first clamping locator 3 is mounted on one end of the first mounting block 2, a second mounting block 4 is mounted on the other end of the top of the device body 1, a second clamping locator 5 is mounted on one end of the second mounting block 4, and a sheet metal placement plate 6 is mounted in the middle of the top of the device body 1;

[0026] The first mounting block 2 and the second mounting block 4 are symmetrically arranged, the first mounting block 2 can be adjusted in lifting and lowering, the second mounting block 4 can be adjusted in lifting and lowering as well as in horizontal movement, the first clamping locator 3 and the second clamping locator 5 are symmetrically arranged and can be adjusted in rotation, the second mounting block 4 that moves horizontally drives the second clamping locator 5 to move, and the sheet metal placed on the top of the sheet metal placement plate 6 is clamped, positioned and fixed by the cooperation of the first clamping locator 3, and the clamped, positioned and fixed sheet metal can be driven to rotate by the synchronous upward movement of the second mounting block 4 of the first mounting block 2, and at the same time, the sheet metal can be driven to flip and adjust the angle by the rotatably adjustable first clamping locator 3 and the second clamping locator 5;

[0027] The middle parts of the first mounting block 2, the first clamping locator 3, the second mounting block 4, the second clamping locator 5 and the sheet metal placement plate 6 are located on the same vertical plane, and the sheet metal placement plate 6 can be raised and lowered to drive the sheet metal on its top to move its position, so that the center point of the sheet metal is located below the center point of the first clamping locator 3 and the second clamping locator 5, so that the first clamping locator 3 and the second clamping locator 5 can effectively clamp, position and fix the sheet metal.

[0028] The positioning device for automobile sheet metal welding has a convenient adjustment structure, which can effectively adjust sheet metal parts of different sizes and thicknesses and firmly fix and position the sheet metal parts, thereby effectively improving the adaptability and scope of use of the device. At the same time, the device can flip or adjust the angle of the fixed sheet metal parts, thereby effectively improving the convenience and efficiency of sheet metal processing.

[0029] The positioning device for welding automobile sheet metal parts has a simple structural design, is convenient and easy to use and operate, and is stable and reliable in processing and adjustment. Its performance can meet the use requirements of automobile sheet metal parts processing.

[0030] Embodiment 2, on the basis of embodiment 1, an adjustment groove 27 is provided in the middle of the top of the device body 1, and a bidirectional threaded shaft 28 is rotatably connected inside the adjustment groove 27, and a movable plate 29 is symmetrically threadedly connected on both sides of the bidirectional threaded shaft 28, and two adjustment rods 30 are rotatably connected between the top of the two movable plates 29 and the bottom of the sheet metal placement plate 6, and one end of the bidirectional threaded shaft 28 extends to the outside of one side of the device body 1 and is fixedly connected to a second rotating wheel 31, so that automobile sheet metal parts of different thicknesses can be effectively positioned and clamped inside the scissors frame 10;

[0031] The automobile sheet metal part to be processed is placed on the top of the sheet metal part placement plate 6. When the center point of the automobile sheet metal part is located at the upper part of the middle position of the scissors frame 10, the sheet metal part placement plate 6 is lowered so that the sheet metal part placement plate 6 drives the automobile sheet metal part to move downward and the center point of the automobile sheet metal part is located at the lower part of the middle position of the scissors frame 10.

[0032] During adjustment, the bidirectional threaded shaft 28 is rotated by the second rotating wheel 31. The rotation of the bidirectional threaded shaft 28 will cause the two movable plates 29 to move away from each other and drive the sheet metal placement plate 6 to move downward through the adjusting rod 30. The downward movement of the sheet metal placement plate 6 will drive the automobile sheet metal on top of it to move downward for adjustment.

[0033] A transmission chamber 32 is provided in the middle of the device body 1, and a sliding groove 33 connected to the top of the device body 1 is provided at one end of the top of the transmission chamber 32. A threaded shaft 34 is rotatably connected inside the sliding groove 33, and a horizontal slider 35 slidably installed inside the sliding groove 33 is threadedly connected on the surface of the threaded shaft 34. A second gear column 36 is rotatably connected to the upper part of the transmission chamber 32. A second forward and reverse motor 102 and a third forward and reverse motor 103 are installed at one end of the device body 1, and the output ends of the second forward and reverse motor 102 and the third forward and reverse motor 103 are fixedly connected to one end of the threaded shaft 34 and one end of the second gear column 36 respectively.

[0034] A pair of inverted convex through grooves 37 are provided on one side of the horizontal slider 35 and the other end of the top of the transmission cavity 32. Inverted T-shaped square adjustment rods 38 are movably inserted inside the two pairs of inverted convex through grooves 37. A rack 39 matching and meshing with the second gear column 36 is fixedly installed on one side of the four inverted T-shaped square adjustment rods 38. The rack 39 is located just below the inside of the inverted convex through groove 37. The tops of the two pairs of inverted T-shaped square adjustment rods 38 are fixedly connected to the bottoms of the first mounting block 2 and the second mounting block 4, respectively, so that the clamping, positioning, fixing and lifting adjustment can be effectively performed.

[0035] When it is necessary to clamp, position and fix the automobile sheet metal part, the second forward and reverse motor 102 is started to rotate the threaded shaft 34, and the rotation of the threaded shaft 34 will cause the horizontal slider 35 to slide inside the sliding groove 33, and the movement of the horizontal slider 35 will drive the pair of inverted T-shaped square adjustment rods 38 thereon to move horizontally, and the horizontal movement of the inverted T-shaped square adjustment rods 38 will drive the rack 39 to move on the surface of the second gear column 36 and maintain an effective meshing connection; at the same time, the movement of the horizontal slider 35 will drive the second mounting block 4 to move toward the first mounting block 2 through the inverted T-shaped square adjustment rods 38, so that the scissor racks 10 on the opposite sides of the two long plates 7 can clamp, position and fix the automobile sheet metal part placed on the top of the sheet metal placement plate 6 through the rubber clamping protective pads 11;

[0036] When it is necessary to lift the automobile sheet metal, the second gear column 36 is rotated by starting the third forward and reverse motor 103. The rotation of the second gear column 36 will drive the four racks 39 to move upward. The upward movement of the four racks 39 will drive the two pairs of inverted T-shaped square adjusting rods 38 to move upward. The upward movement of the two pairs of inverted T-shaped square adjusting rods 38 will drive the first mounting block 2 and the second mounting block 4 to move upward. The upward movement of the first mounting block 2 and the second mounting block 4 will drive the long plate 7 thereon to move upward, thereby driving the automobile sheet metal to be lifted away from the top of the sheet metal placement plate 6.

[0037] Embodiment 3, on the basis of embodiment 1, the first clamping locator 3 and the second clamping locator 5 both include a long plate 7 and a rotating shaft 8, the rotating shaft 8 is fixedly connected to the middle of one side of the long plate 7, and the two rotating shafts 8 are respectively rotatably connected to the middle of the second mounting block 4 of the first mounting block 2, grooves 9 are equidistantly provided on the opposite sides of the two long plates 7, scissors frames 10 are installed inside the grooves 9, and rubber clamping protective pads 11 are fixedly installed on both inner sides of the scissors frames 10 located outside the grooves 9.

[0038] Adjustment blocks 12 are fixedly installed at both ends of the rubber clamping protection pad 11 located inside the groove 9, and a toggle groove 13 is opened in the middle of the two adjustment blocks 12. A two-way threaded pin 14 is rotatably connected to the inside of the groove 9, and the upper and lower parts of the two-way threaded pin 14 are symmetrically threadedly connected with a threaded moving block 15. One side of the threaded moving block 15 is in sliding contact with one side of the groove 9, and a toggle pin 16 is fixedly installed on the other side of the threaded moving block 15. The toggle pin 16 is inserted into the toggle groove 13, so that sheet metal parts of different thicknesses can be clamped, positioned and fixed.

[0039] The bottoms of the two-way threaded pins 14 extend to the bottom of the long plates 7 and are fixedly installed with the first worm gear 17. The bottoms of the two long plates 7 are rotatably connected with the first worm 18. The first worm 18 at the bottoms of the two long plates 7 are meshed with all the first worm gears 17 at the bottoms of the long plates 7. One end of the two first worm gears 18 is fixedly installed with a first bevel gear 19. One end of the bottom of the two long plates 7 is rotatably connected with a second bevel gear 20 meshed with the first bevel gear 19. One end of the two second bevel gears 20 is fixedly connected with the first gear 21, so that the scissors frame 10 can be effectively adjusted.

[0040] When the first gear 21 rotates, it will drive the second bevel gear 20 to rotate, and the rotation of the second bevel gear 20 will transmit the rotation of the first bevel gear 19, and the rotation of the first bevel gear 19 will drive the first worm 18 to rotate, and the rotation of the first worm 18 will transmit the rotation of the first worm gear 17, and the rotation of the first worm gear 17 will drive the two-way threaded pin 14 to rotate, and the rotation of the two-way threaded pin 14 will cause the two threaded moving blocks 15 on its surface to move relative to or away from each other, and the movement of the two threaded moving blocks 15 on the surface of the two-way threaded pin 14 will toggle the adjustment block 12 through the toggle pin 16 and the toggle groove 13 to drive the scissors frame 10 to close or expand, so that the opening angle of the scissors frame 10 can be effectively adjusted to clamp and position sheet metal parts of different thicknesses; at the same time, the side of the sheet metal part can be protectively clamped, positioned and fixed through the rubber clamping protective pad 11 to avoid damage to the positioned and fixed sheet metal parts.

[0041] Embodiment 4, on the basis of embodiment 3, a long horizontal groove 22 is opened on one side of the top of the device body 1, and a first gear column 23 is rotatably connected inside the long horizontal groove 22, and the first gear column 23 cooperates and meshes with the two first gears 21. A first forward and reverse motor 101 is installed at one end of the device body 1, and the output end of the first forward and reverse motor 101 is fixedly connected to one end of the first gear column 23, so that the adjustment can be effectively performed.

[0042] By starting the first forward and reverse motor 101, the first forward and reverse motor 101 drives the first gear column 23 to rotate, and the rotation of the first gear column 23 drives the two first gears 21 to rotate and adjust; at the same time, when the second mounting block 4 moves horizontally and linearly, the first gear 21 on one side of the second mounting block 4 can effectively engage and connect with the first gear column 23.

[0043] A second worm gear 24 is fixedly mounted on one end of the rotating shaft 8 on the second mounting block 4, a second worm 25 meshing with the second worm gear 24 is rotatably connected to one side of the second mounting block 4, and a first rotating wheel 26 is fixedly connected to one end of the second worm 25, so that the two long plates 7 can be effectively rotated to drive the positioned and fixed sheet metal parts to be turned over or adjust the angle;

[0044] When the automobile sheet metal is clamped, positioned and fixed between the inside of the scissor frame 10 on the opposite sides of the two long plates 7, the upward movement of the first mounting block 2 and the second mounting block 4 will drive the automobile sheet metal to be lifted. After being lifted to a certain height, the second worm 25 is rotated by the first rotating wheel 26. The rotation of the second worm 25 will drive the second worm wheel 24 to rotate and drive one of the rotating shafts 8 to rotate. At the same time, the two long plates 7 and the automobile sheet metal therebetween will be driven to rotate by the other rotatable rotating shaft 8, thereby realizing the turning over or angle adjustment of the automobile sheet metal, which is convenient for welding operations on both sides of the automobile sheet metal.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] 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 positioning device for welding automobile sheet metal parts, comprising a device body (1), characterized in that: A first mounting block (2) is mounted on one end of the top of the device body (1), a first clamping locator (3) is mounted on one end of the first mounting block (2), a second mounting block (4) is mounted on the other end of the top of the device body (1), a second clamping locator (5) is mounted on one end of the second mounting block (4), and a sheet metal placement plate (6) is mounted in the middle of the top of the device body (1); The first mounting block (2) and the second mounting block (4) are symmetrically arranged, the first mounting block (2) can be adjusted in elevation, the second mounting block (4) can be adjusted in elevation and in horizontal movement, the first clamping locator (3) and the second clamping locator (5) are symmetrically arranged and can be adjusted in rotation, the second mounting block (4) that moves horizontally drives the second clamping locator (5) to move, and the sheet metal placed on the top of the sheet metal placement plate (6) is clamped, positioned and fixed by the cooperation of the first clamping locator (3), and the clamped, positioned and fixed sheet metal can be driven to rotate by the synchronous upward movement of the second mounting block (4) of the first mounting block (2), and at the same time, the sheet metal can be driven to flip and adjust the angle by the first clamping locator (3) and the second clamping locator (5) that can be adjusted in rotation; The first mounting block (2), the first clamping locator (3), the second mounting block (4), the second clamping locator (5) and the middle of the sheet metal placement plate (6) are located on the same vertical plane, and the sheet metal placement plate (6) can be raised and lowered to drive the sheet metal on its top to move in position, so that the center point of the sheet metal is located below the center points of the first clamping locator (3) and the second clamping locator (5), so that the first clamping locator (3) and the second clamping locator (5) can effectively clamp, position and fix the sheet metal.

2. The positioning device for welding automobile sheet metal parts according to claim 1, characterized in that: The first clamping positioner (3) and the second clamping positioner (5) both comprise a long plate (7) and a rotating shaft (8), the rotating shaft (8) being fixedly connected to the middle of one side of the long plate (7), and the two rotating shafts (8) being rotatably connected to the middle of the second mounting block (4) of the first mounting block (2), respectively, grooves (9) being equidistantly provided on opposite sides of the two long plates (7), scissor frames (10) being installed inside the grooves (9), and rubber clamping protective pads (11) being fixedly installed on both inner sides of the scissor frames (10) outside the grooves (9).

3. A positioning device for welding automobile sheet metal parts according to claim 2, characterized in that: The two ends of the rubber clamping protective pad (11) located inside the groove (9) are fixedly mounted with adjustment blocks (12), the middle parts of the two adjustment blocks (12) are provided with a toggle groove (13), the inside of the groove (9) is rotatably connected with a bidirectional threaded pin (14), the upper and lower parts of the bidirectional threaded pin (14) are symmetrically threadedly connected with a threaded moving block (15), one side of the threaded moving block (15) is in sliding contact with one side of the groove (9), and the other side of the threaded moving block (15) is fixedly mounted with a toggle pin (16), which is inserted into the inside of the toggle groove (13).

4. The positioning device for welding automobile sheet metal parts according to claim 3, characterized in that: The bottom of the bidirectional threaded pin (14) extends to the bottom of the long plate (7) and is fixedly mounted with a first worm gear (17); the bottoms of the two long plates (7) are rotatably connected with a first worm (18); the first worms (18) at the bottoms of the two long plates (7) are meshed with all the first worm gears (17) at the bottoms of the long plates (7); one end of the two first worms (18) is fixedly mounted with a first bevel gear (19); one end of the bottoms of the two long plates (7) is rotatably connected with a second bevel gear (20) meshed with the first bevel gear (19); one end of the two second bevel gears (20) is fixedly connected with a first gear (21).

5. The positioning device for welding automobile sheet metal parts according to claim 4, characterized in that: A long horizontal groove (22) is provided on one side of the top of the device platform (1), a first gear column (23) is rotatably connected inside the long horizontal groove (22), the first gear column (23) cooperates with and meshes with the two first gears (21), a first forward and reverse motor (101) is installed at one end of the device platform (1), and the output end of the first forward and reverse motor (101) is fixedly connected to one end of the first gear column (23).

6. The positioning device for welding automobile sheet metal parts according to claim 2, characterized in that: A second worm gear (24) is fixedly mounted on one end of the rotating shaft (8) on the second mounting block (4), a second worm (25) meshingly connected to the second worm gear (24) is rotatably connected to one side of the second mounting block (4), and one end of the second worm (25) is fixedly connected to the first rotating wheel (26).

7. The positioning device for welding automobile sheet metal parts according to claim 1, characterized in that: An adjustment groove (27) is provided in the middle of the top of the device platform (1), a bidirectional threaded shaft (28) is rotatably connected inside the adjustment groove (27), and movable plates (29) are symmetrically threadedly connected on both sides of the bidirectional threaded shaft (28), and two adjustment rods (30) are rotatably connected between the tops of the two movable plates (29) and the bottom of the sheet metal component placement plate (6), and one end of the bidirectional threaded shaft (28) extends to the outside of one side of the device platform (1) and is fixedly connected to a second rotating wheel (31).

8. The positioning device for welding automobile sheet metal parts according to claim 7, characterized in that: A transmission chamber (32) is provided in the middle of the device body (1); a sliding groove (33) communicating with the top of the device body (1) is provided at one end of the top of the transmission chamber (32); a threaded shaft (34) is rotatably connected inside the sliding groove (33); a horizontal sliding block (35) slidably mounted inside the sliding groove (33) is threadedly connected on the surface of the threaded shaft (34); a second gear column (36) is rotatably connected to the upper part of the transmission chamber (32); a second forward and reverse motor (102) and a third forward and reverse motor (103) are mounted at one end of the device body (1); and output ends of the second forward and reverse motor (102) and the third forward and reverse motor (103) are fixedly connected to one end of the threaded shaft (34) and one end of the second gear column (36), respectively.

9. A positioning device for welding automobile sheet metal parts according to claim 8, characterized in that: A pair of inverted convex through grooves (37) are provided on one side of the horizontal sliding block (35) and on the other end of the top of the transmission cavity (32). Inverted T-shaped square adjustment rods (38) are movably inserted into the interior of the two pairs of inverted convex through grooves (37). A rack (39) matching and meshingly connected with the second gear column (36) is fixedly installed on one side of the four inverted T-shaped square adjustment rods (38). The rack (39) is located directly below the interior of the inverted convex through grooves (37). The tops of the two pairs of inverted T-shaped square adjustment rods (38) are fixedly connected to the bottoms of the first mounting block (2) and the second mounting block (4), respectively.

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