Automatic welding device for lifting platform machining

Abstract

The invention relates to the field of welding equipment, in particular to an automatic welding device for lifting platform machining, which comprises a worktable, a clamping assembly, a driving assembly and a knocking assembly, fixed clamping plates are fixedly mounted on four sides of the worktable, placing plates are fixedly mounted on the outer sides of the fixed clamping plates, and connecting cylinders are fixedly mounted at four corners of the bottom of the worktable. When a driving motor in an arranged driving assembly rotates reversely, a transmission gear in a knocking assembly can be driven to rotate, an inner gear ring can be driven to rotate, when a corrugated block moves to the position of a shifting block, a rectangular sliding groove and a rectangular sliding block are matched, a connecting column can make reciprocating motion and vibration, and therefore the knocking effect is improved. And a rotating gear is driven to rotate repeatedly through a rack, and a cross knocking plate can move up and down in cooperation with a guide groove and a bent sliding column, so that the welding position of a cross rod material is knocked, welding slag falls off, the using effect of the device is improved, and fraud is not required to be carried out again in the later period.

Description

[0001] This application is a divisional application with the application date of July 4, 2024, application number 202410891182X, and the invention name is "An automated welding device for lifting platform processing." Technical Field

[0002] The invention relates to the field of welding equipment, and in particular to an automatic welding device for processing a lifting platform. Background Art

[0003] The lifting platform is a multifunctional lifting and loading and unloading mechanical equipment, which can be divided into fixed and mobile types: the mobile type is divided into straight arm type, curved arm type, scissors type, mast type, aluminum alloy lifting platform, cylinder type: the fixed type includes scissors type, guide rail lifting platform, chain lifting platform, loading and unloading platform and attached electric construction platform, etc.

[0004] During the processing and production of the lifting platform, some parts require welding processes. For example, the base frame of the lifting platform is welded from four cross bars. However, since the cross bars are too long, more clamping units are required, which makes the device costly. At the same time, before welding, a lot of time is required to use the clamping units to clamp and fix the cross bars. After welding, the clamping units need to be unlocked and fixed one by one, which greatly reduces the processing efficiency of aluminum plate welding. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the background technology and to propose an automatic welding device for lifting platform processing.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An automated welding device for processing a lifting platform comprises a workbench, a clamping assembly, a driving assembly and a knocking assembly, wherein fixed clamps are fixedly installed on the four sides of the workbench, a placement plate is fixedly installed on the outer side of the fixed clamp, connecting tubes are fixedly installed on the four corners of the bottom of the workbench, and four electromagnets are symmetrically fixedly installed on the top of the workbench.

[0008] The clamping assembly includes a support table and a rotating ring, a protective sleeve seat is fixedly installed on the top of the support table, four push columns are movably installed on the inner side of the protective sleeve seat, one end of the four push columns are fixedly installed with a movable clamping plate, the other ends of the four push columns are fixedly installed with an arc-shaped sliding block, the top of the support table is rotatably installed with a mounting ring, the outer side of the mounting ring is fixedly installed with a special-shaped push block, the outer side of the special-shaped push block is provided with four arc-shaped sliding grooves, four fixed shifting blocks are fixedly installed inside the mounting ring, four mounting blocks are fixedly installed on the outer side of the rotating ring, inner sleeve columns are fixedly installed inside the four mounting blocks, and movable shifting blocks are sleeved on the outer sides of the inner sleeve columns.

[0009] The driving assembly comprises a driving motor, a reducer is installed at the output end of the driving motor, a driving gear is fixedly installed at the output end of the reducer, and a rotating column is fixedly installed at the top of the driving gear.

[0010] The knocking assembly includes a cross knocking plate, a groove column, a connecting column and an inner gear ring, vertical sliding columns are fixedly installed on both sides of the bottom of the cross knocking plate, and a bent sliding column is fixedly installed on one end of the vertical sliding column away from the cross knocking plate. Guide grooves are opened on both sides of the groove column, a supporting rotating column is fixedly installed on the bottom of the groove column, a rotating gear is fixedly installed on the outer side of the supporting rotating column, a rack is fixedly installed on one end of the connecting column, and a toggle block is fixedly installed on the end of the connecting column away from the rack, and a transmission gear is meshed and installed on the inner side of the inner gear ring.

[0011] In the above-mentioned automated welding device for processing a lifting platform, a support leg is fixedly installed at one end of the connecting tube away from the workbench.

[0012] In the above-mentioned automated welding device for processing a lifting platform, the reducer is fixedly installed at the bottom of the workbench, the rotating sleeve is fixedly installed on the outside of the rotating column, the mounting ring is located on the outside of the rotating sleeve, and a torsion spring is installed on the outer side of the inner sleeve, and the two ends of the torsion spring are respectively installed on the inner side of the movable shift block and the outer side of the inner sleeve, and the arc-shaped slider is slidably installed on the inner side of the arc-shaped slide groove.

[0013] In the above-mentioned automated welding device for processing a lifting platform, circular grooves are provided on the inner sides of the four corners of the workbench, the rotating gear and the groove column are located on the inner sides of the circular grooves, and the end of the supporting rotating column away from the groove column is rotatably installed on the inner side of the connecting tube, the bent sliding column is slidably installed on the inner side of the guide groove, and two circular through holes are provided on the four corners of the top of the workbench, and the vertical sliding column is slidably installed on the inner sides of the circular through holes.

[0014] In the above-mentioned automated welding device for processing a lifting platform, the inner gear ring, transmission gear and driving gear are all located on the inner side of the workbench, the outer side of the transmission gear is meshed with the outer side of the driving gear, rotating rings are fixedly installed on the top and bottom of the inner gear ring, and a corrugated block is fixedly installed on the outer side of the inner gear ring.

[0015] In the above-mentioned automated welding device for processing a lifting platform, rectangular grooves are provided inside the four corners of the workbench, rectangular sliders are slidably installed inside the rectangular grooves, springs are provided inside the rectangular grooves, one end of the spring is fixedly connected to one side of the rectangular slider, and the other side of the rectangular slider is fixedly connected to one side of the inner cavity of the rectangular groove, one side of the rectangular slider is fixedly connected to one side of the connecting column, one side of the rack is meshed with the outer side of the rotating gear, and the outer side of the toggle block is in contact with the outer side of the inner gear ring.

[0016] In the above-mentioned automated welding device for machining a lifting platform, both ends of the movable clamping plate on the side away from the push column are fixedly mounted with pressure blocks.

[0017] In the above-mentioned automated welding device for processing a lifting platform, a protective cover is fixedly installed on the top of the protective sleeve seat, and the protective cover is located on the top of the rotating sleeve ring and the mounting ring.

[0018] In the above-mentioned automated welding device for processing a lifting platform, a striking block is fixedly installed on the top of the cross striking plate.

[0019] Compared with the existing technology, the advantages of this automatic welding device for lifting platform processing are:

[0020] 1. The placement plate can be used to place the bottom frame crossbar material produced by the lifting platform, and the two ends of the crossbar material can be in contact with each other, which is convenient for subsequent welding. In addition, the clamping assembly can be used to clamp the crossbar material placed on the top of the placement plate to ensure that the crossbar material will not be displaced during the welding process, to ensure the normal progress of the welding process, to avoid the agitation or displacement of the crossbar, to ensure the flatness of the joints of the two crossbars and the consistency of the welds, thereby improving the welding quality. At the same time, the operation of the fixing mechanism is simple and convenient, which can effectively improve the processing efficiency of the bottom frame crossbar welding;

[0021] 2. The driving motor in the driving assembly can drive the clamping assembly to operate when it rotates forward, so that the mounting ring in the clamping assembly drives the special-shaped push block to rotate, thereby pushing the push column to move inside the protective sleeve seat through the special-shaped push block, so that the crossbar material is clamped and fixed by the moving clamp plate in cooperation with the fixed clamp plate, and then the electromagnet can be turned on to adsorb and fix the push column, thereby ensuring the clamping effect of the crossbar material. The clamping is simple and convenient, easy to operate, and can clamp materials of different widths to improve the clamping effect;

[0022] 3. When the driving motor in the driving assembly is reversed, the transmission gear in the knocking assembly can be driven to rotate, and the inner gear ring can be driven to rotate. When the corrugated block moves to the position of the toggle block, the connecting column can be vibrated back and forth in cooperation with the rectangular slide groove and the rectangular slider, so that the rack can be reciprocated and the rotating gear can be repeatedly rotated. In addition, the cross knocking plate can be moved up and down in cooperation with the guide groove and the bent slide column, so as to knock on the welding part of the crossbar material, so that the welding slag can fall off, which improves the use effect of the device and eliminates the need for further knocking later. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional appearance structure of an automatic welding device for lifting platform processing proposed by the present invention;

[0024] Figure 2 It is a bottom-up three-dimensional structural schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of a top view and cross-section structure of the present invention;

[0026] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0027] Figure 5 This is a schematic diagram of the internal structure of the protective cover of the present invention when viewed from above;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the driving component of the present invention;

[0029] Figure 7 It is a schematic diagram of the split three-dimensional structure of the striking component of the present invention;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the inner gear ring of the present invention;

[0031] Fig. 9 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0032] In the figure: 1, workbench; 2, support table; 3, protective sleeve seat; 4, movable splint; 5, pressing block; 6, protective cover; 7, fixed splint; 8, placement plate; 9, knocking block; 10, connecting tube; 11, supporting leg; 12, electromagnet; 13, driving motor; 14, reducer; 15, driving gear; 16, limit arc strip; 17, movable shift block; 18, mounting block; 19, rotating collar; 20, rotating column; 21, inner sleeve column; 22, mounting ring; 23, special-shaped push rod Block; 24, arc-shaped slide groove; 25, arc-shaped slider; 26, fixed dial block; 27, push column; 28, transmission gear; 29, inner gear ring; 30, rotating ring; 31, dial block; 32, corrugated block; 33, guide groove; 34, vertical slide column; 35, bent slide column; 36, rotating gear; 37, supporting rotating column; 38, groove column; 39, cross knocking plate; 40, rack; 41, circular groove; 42, spring; 43, rectangular slide groove; 44, rectangular slider; 45, connecting column. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0034] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] Reference Figure 1-Figure 9 An automated welding device for lifting platform processing comprises a workbench 1, a clamping assembly, a driving assembly and a striking assembly. Fixed splints 7 are fixedly installed on the four sides of the workbench 1, and a placement plate 8 is fixedly installed on the outer sides of the fixed splints 7. Connecting tubes 10 are fixedly installed on the four corners of the bottom of the workbench 1. Four electromagnets 12 are symmetrically fixedly installed on the top of the workbench 1, and a supporting leg 11 is fixedly installed on the end of the connecting tube 10 away from the workbench 1.

[0036] The clamping assembly includes a support platform 2 and a rotating collar 19, a protective sleeve seat 3 is fixedly installed on the top of the support platform 2, four push columns 27 are movably installed on the inner side of the protective sleeve seat 3, one end of the four push columns 27 are fixedly installed with a movable clamping plate 4, and the other end of the four push columns 27 are fixedly installed with an arc-shaped slider 25, a mounting ring 22 is rotatably installed on the top of the support platform 2, a special-shaped push block 23 is fixedly installed on the outer side of the mounting ring 22, and four arc-shaped slide grooves 24 are provided on the outer side of the special-shaped push block 23, four fixed shifting blocks 26 are fixedly installed inside the mounting ring 22, four mounting blocks 18 are fixedly installed on the outer side of the rotating collar 19, inner sleeve columns 21 are fixedly installed inside the four mounting blocks 18, and movable shifting blocks 17 are sleeved on the outer side of the inner sleeve column 21, and a torsion spring is sleeved on the outer side of the inner sleeve column 21, and the two ends of the torsion spring are respectively installed on the inner side of the movable shifting block 17 and the outer side of the inner sleeve column 21, and the arc-shaped slider 25 is slidably installed on the inner side of the arc-shaped slide groove 24.

[0037] The driving assembly includes a driving motor 13, a reducer 14 is installed at the output end of the driving motor 13, a driving gear 15 is fixedly installed at the output end of the reducer 14, a rotating column 20 is fixedly installed on the top of the driving gear 15, the reducer 14 is fixedly installed at the bottom of the workbench 1, a rotating ring 19 is fixedly installed on the outside of the rotating column 20, and the mounting ring 22 is located on the outside of the rotating ring 19.

[0038] The knocking assembly includes a cross knocking plate 39, a groove column 38, a connecting column 45 and an inner gear ring 29. Vertical sliding columns 34 are fixedly installed on both sides of the bottom of the cross knocking plate 39. A bending sliding column 35 is fixedly installed on one end of the vertical sliding column 34 away from the cross knocking plate 39. Guide grooves 33 are opened on both sides of the groove column 38. A supporting rotating column 37 is fixedly installed at the bottom of the groove column 38. A rotating gear 36 is fixedly installed on the outer side of the supporting rotating column 37. One end of the connecting column 45 A rack 40 is fixedly installed, and a toggle block 31 is fixedly installed on the end of the connecting column 45 away from the rack 40. A transmission gear 28 is meshed and installed on the inner side of the inner gear ring 29. Circular grooves 41 are opened on the inner sides of the four corners of the workbench 1. The rotating gear 36 and the groove column 38 are both located on the inner side of the circular groove 41, and the end of the supporting rotating column 37 away from the groove column 38 is rotatably installed on the inner side of the connecting cylinder 10, and the bending sliding column 35 is slidably installed on the inner side of the guide groove 33. The top of the workbench 1 Two circular through holes are provided at the four corners of the workbench 1, and the vertical sliding column 34 is slidably installed on the inner side of the circular through holes. The inner gear ring 29, the transmission gear 28 and the driving gear 15 are all located on the inner side of the workbench 1, and the outer side of the transmission gear 28 is meshed with the outer side of the driving gear 15. The top and bottom of the inner gear ring 29 are fixedly installed with a rotating ring 30, and the outer side of the inner gear ring 29 is fixedly installed with a corrugated block 32. Rectangular slide grooves 43 are provided inside the four corners of the workbench 1, and rectangular sliders 44 are slidably installed inside the rectangular slide grooves 43. Springs 42 are provided inside the rectangular slide grooves 43, one end of the spring 42 is fixedly connected to one side of the rectangular slider 44, and the other side of the rectangular slider 44 is fixedly connected to one side of the inner cavity of the rectangular slide groove 43, one side of the rectangular slider 44 is fixedly connected to one side of the connecting column 45, one side of the rack 40 is meshed with the outer side of the rotating gear 36, and the outer side of the toggle block 31 contacts the outer side of the inner gear ring 29.

[0039] Among them, the placement plate 8 provided can be used to place the chassis crossbar material produced by the lifting platform, and the two ends of the crossbar material can be made to contact each other, which is convenient for subsequent welding. In addition, the clamping assembly provided can clamp the crossbar material placed on the top of the placement plate 8 to ensure that the crossbar material will not be displaced during the welding process, ensure the normal progress of the welding process, avoid the vibration or displacement of the crossbar, so as to ensure the flatness of the joints of the two crossbars and the consistency of the weld, thereby improving the welding quality. At the same time, the operation of the fixing mechanism is simple and convenient, which can effectively improve the processing efficiency of the chassis crossbar welding.

[0040] Among them, the driving motor 13 in the driving assembly can drive the clamping assembly to operate when it rotates forward, prompting the mounting ring 22 in the clamping assembly to drive the special-shaped push block 23 to rotate, thereby pushing the push column 27 to move on the inner side of the protective sleeve seat 3 through the special-shaped push block 23, so that the cross bar material is clamped and fixed by the movable clamp plate 4 in cooperation with the fixed clamp plate 7, and then the electromagnet 12 can be turned on to adsorb and fix the push column 27, thereby ensuring the clamping effect of the cross bar material. The clamping is simple and convenient, easy to operate, and materials of different widths can be clamped to improve the clamping effect.

[0041] Among them, when the driving motor 13 in the driving assembly is reversed, the transmission gear 28 in the knocking assembly can be driven to rotate, and the inner gear ring 29 can be driven to rotate. When the corrugated block 32 moves to the position of the toggle block 31, in conjunction with the rectangular slide groove 43 and the rectangular slider 44, the connecting column 45 can be reciprocated and vibrated, so that the rack 40 can reciprocate and the rotating gear 36 can be repeatedly rotated, and in conjunction with the guide groove 33 and the bent slide column 35, the cross knocking plate 39 can be moved up and down, thereby realizing the knocking of the welding part of the cross bar material, so that the welding slag falls off, improving the use effect of the device, and there is no need to blackmail again later.

[0042] Both ends of the movable clamping plate 4 away from the push column 27 are fixedly mounted with pressing blocks 5 , and the top of the protective sleeve seat 3 is fixedly mounted with a protective cover 6 , and the protective cover 6 is located on the top of the rotating sleeve ring 19 and the mounting ring 22 .

[0043] Among them, the set pressure block 5 can reduce the contact area between the movable clamping plate 4 and the cross bar material, which can improve the clamping effect of the cross bar material, and the set protective cover 6 can protect the rotating ring 19 and the mounting ring 22 to prevent debris from falling between the rotating ring 19 and the mounting ring 22.

[0044] A striking block 9 is fixedly mounted on the top of the cross striking plate 39 .

[0045] Among them, the knocking block 9 can reduce the contact area between the cross knocking plate 39 and the crossbar material, which can improve the knocking effect.

[0046] The specific working principle and method of use of the present invention are explained in detail below: first, the base frame crossbar material produced by the lifting platform that needs to be welded is placed on the top of the placement plate 8, and the two ends of the crossbar material are in contact with each other, and then the drive motor 13 is started to rotate forward, and the output end of the drive motor 13 is decelerated by the reducer 14 to drive the rotating column 20, thereby driving the rotating sleeve 19 to rotate, and driving the movable shift block 17 to rotate, the forward rotating movable shift block 17 can push the fixed shift block 26 to rotate forward, so that the mounting ring 22 rotates forward, prompting the special-shaped push block 23 to rotate, and the arc-shaped slider 25 moves inside the arc-shaped slide groove 24, so as to push the push column 27 to move, and push the movable clamping plate 4 close to the fixed clamping plate 7, so as to clamp and fix the crossbar material placed on the top of the placement plate 8, and then the electromagnet 12 can be opened to adsorb and fix the push column 27, so as to ensure the clamping effect of the crossbar material, the clamping is simple and convenient, easy to operate, and can be Materials of different widths can be clamped to improve the clamping effect. After clamping, the welding is performed on the required welding points through external welding equipment. After welding is completed, the driving motor 13 can be started to reverse, and the driving gear 15 is driven to rotate after being decelerated by the reducer 14, and the inner gear ring 29 is driven to rotate through the transmission gear 28, thereby driving the corrugated block 32 to move. When the corrugated block 32 moves to the position of the toggle block 31, in conjunction with the rectangular slide groove 43 and the rectangular slider 44, the connecting column 45 can be reciprocated and vibrated, so that the rack 40 moves back and forth, and the rotating gear 36 is repeatedly rotated, and in conjunction with the guide groove 33 and the bent slide column 35, the cross knocking plate 39 can be moved up and down, thereby realizing the knocking of the welding point of the crossbar material, so that the welding slag falls off, and the use effect of the lifting device is improved. There is no need to knock the slag again later, and the use effect of the lifting device is improved. In addition, after the knocking slag is cleaned, it is only necessary to turn off the electromagnet 12 to take out the welded lifting platform chassis.

[0047] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automated welding device for lifting platform processing, comprising a workbench (1), a clamping assembly, a driving assembly and a striking assembly, characterized in that: The four sides of the workbench (1) are fixedly mounted with fixed clamps (7), the outer sides of the fixed clamps (7) are fixedly mounted with placement plates (8), the four corners of the bottom of the workbench (1) are fixedly mounted with connecting tubes (10), and the top of the workbench (1) is symmetrically fixedly mounted with four electromagnets (12); The clamping assembly comprises a support platform (2) and a rotating collar (19); a protective sleeve seat (3) is fixedly mounted on the top of the support platform (2); four push columns (27) are movably mounted on the inner side of the protective sleeve seat (3); a movable clamping plate (4) is fixedly mounted on one end of each of the four push columns (27); an arc-shaped slider (25) is fixedly mounted on the other end of each of the four push columns (27); a mounting ring (22) is rotatably mounted on the top of the support platform (2); A special-shaped push block (23) is fixedly installed on the outer side of the ring (22), and four arc-shaped slide grooves (24) are opened on the outer side of the special-shaped push block (23); four fixed shifting blocks (26) are fixedly installed inside the mounting ring (22); four mounting blocks (18) are fixedly installed on the outer side of the rotating sleeve ring (19); inner sleeve columns (21) are fixedly installed inside the four mounting blocks (18), and movable shifting blocks (17) are sleeved on the outer sides of the inner sleeve columns (21); The driving assembly comprises a driving motor (13), a reducer (14) is installed at the output end of the driving motor (13), a driving gear (15) is fixedly installed at the output end of the reducer (14), and a rotating column (20) is fixedly installed at the top of the driving gear (15); The knocking assembly comprises a cross knocking plate (39), a slot column (38), a connecting column (45) and an inner gear ring (29), vertical sliding columns (34) are fixedly installed on both sides of the bottom of the cross knocking plate (39), a bending sliding column (35) is fixedly installed on one end of the vertical sliding column (34) away from the cross knocking plate (39), a guide groove (33) is opened on both sides of the slot column (38), a supporting rotating column (37) is fixedly installed on the bottom of the slot column (38), a rotating gear (36) is fixedly installed on the outer side of the supporting rotating column (37), a rack (40) is fixedly installed on one end of the connecting column (45), a toggle block (31) is fixedly installed on the end of the connecting column (45) away from the rack (40), and a transmission gear (28) is meshingly installed on the inner side of the inner gear ring (29); Both ends of the movable clamping plate (4) away from the push column (27) are fixedly mounted with pressing blocks (5); A protective cover (6) is fixedly mounted on the top of the protective sleeve seat (3), and the protective cover (6) is located on the top of the rotating sleeve ring (19) and the mounting ring (22).

2. The automatic welding device for lifting platform processing according to claim 1 is characterized in that: A support leg (11) is fixedly mounted on one end of the connecting tube (10) away from the workbench (1).

3. The automatic welding device for lifting platform processing according to claim 1 is characterized in that: The reducer (14) is fixedly mounted on the bottom of the workbench (1), the rotating collar (19) is fixedly mounted on the outer side of the rotating column (20), the mounting ring (22) is located on the outer side of the rotating collar (19), a torsion spring is sleeved and mounted on the outer side of the inner sleeve column (21), and the two ends of the torsion spring are respectively mounted on the inner side of the movable shift block (17) and the outer side of the inner sleeve column (21), and the arc-shaped slider (25) is slidably mounted on the inner side of the arc-shaped slide groove (24).

4. The automatic welding device for lifting platform processing according to claim 3 is characterized in that: The inner sides of the four corners of the workbench (1) are provided with circular grooves (41), the rotating gear (36) and the groove column (38) are both located on the inner sides of the circular grooves (41), and the end of the supporting rotating column (37) away from the groove column (38) is rotatably mounted on the inner side of the connecting tube (10), the bending sliding column (35) is slidably mounted on the inner side of the guide groove (33), and the four corners of the top of the workbench (1) are provided with two circular through holes, and the vertical sliding column (34) is slidably mounted on the inner sides of the circular through holes.

5. The automatic welding device for lifting platform processing according to claim 4 is characterized in that: The inner gear ring (29), the transmission gear (28) and the driving gear (15) are all located on the inner side of the workbench (1); the outer side of the transmission gear (28) is meshed with the outer side of the driving gear (15); a rotating ring (30) is fixedly mounted on the top and bottom of the inner gear ring (29); and a corrugated block (32) is fixedly mounted on the outer side of the inner gear ring (29).

6. The automatic welding device for lifting platform processing according to claim 5 is characterized in that: Rectangular grooves (43) are provided inside the four corners of the workbench (1), and rectangular sliders (44) are slidably installed inside the rectangular grooves (43). Springs (42) are provided inside the rectangular grooves (43), one end of the spring (42) is fixedly connected to one side of the rectangular slider (44), and the other side of the rectangular slider (44) is fixedly connected to one side of the inner cavity of the rectangular groove (43), one side of the rectangular slider (44) is fixedly connected to one side of the connecting column (45), one side of the rack (40) is meshed with the outer side of the rotating gear (36), and the outer side of the toggle block (31) is in contact with the outer side of the inner gear ring (29).

7. The automatic welding device for lifting platform processing according to claim 1 is characterized in that: A striking block (9) is fixedly mounted on the top of the cross striking plate (39).

Images