A flip clamp worktable for stud welding

Abstract

The application discloses a kind of overturning material clamping workbench for stud welding in the technical field of gas tank manufacturing, including base, be provided with overturning mechanism on base, be provided with material clamping mechanism and supporting mechanism on overturning mechanism, base is equipped with welding robot.The sheet metal part to be welded is hoisted to the supporting mechanism of workbench by crane, the sheet metal part is fixed by material clamping mechanism, the stud welding of the horizontal plane of sheet metal part is carried out by welding robot, after welding, the sheet metal part is overturned 90 degrees by overturning mechanism, so that its original vertical plane faces up, and then the stud welding of the plane is facilitated by welding robot.It can cooperate with welding robot, automatically overturn the automatic sheet metal part, improve welding efficiency.

Description

Technical Field

[0001] This invention relates to a rotating worktable for stud welding in the field of gas box manufacturing technology. Background Technology

[0002] Environmentally friendly gas switchgear uses a safe and environmentally friendly mixed gas instead of SF6 as the insulating medium inside the gas box, thus solving the problem of SF6 gas leakage pollution. The gas box is assembled from multiple sheet metal parts by welding. Various components need to be installed on the outer wall of the gas box, requiring numerous studs to be welded onto it. In existing technologies, stud welding is often done manually or with welding robots. However, manual welding has poor precision, and using welding robots requires welding one side of the sheet metal parts (both horizontal and vertical), necessitating manual flipping before welding the other side, thus reducing welding efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a flipping clamping worktable for stud welding, which can be used in conjunction with a welding robot to automatically flip sheet metal parts and improve welding efficiency.

[0004] To achieve the above objectives, the present invention provides a flipping clamping worktable for stud welding, including a base, a flipping mechanism on the base, a clamping mechanism and a support mechanism on the flipping mechanism, and a welding robot on the base.

[0005] Compared with existing technologies, the advantages of this invention are that the sheet metal parts to be welded are hoisted onto the support mechanism of the workbench by an overhead crane, and the sheet metal parts are clamped and fixed by a clamping mechanism. The welding robot then welds studs onto the horizontal surface of the sheet metal parts. After welding, the sheet metal parts are rotated 90 degrees by a flipping mechanism so that their original vertical surface faces upward, thus facilitating the welding robot to weld studs on that surface. This invention can work in conjunction with the welding robot to automatically flip the sheet metal parts, improving welding efficiency.

[0006] As a further improvement of the present invention, the flipping mechanism includes a pair of flipping columns, which are respectively disposed at both ends of the base. One of the flipping columns is provided with a driven frame at its top, and a driven shaft is provided on the driven frame. The driven shaft is connected to a flip plate. The other flipping column is provided with an active frame at its top, and a protective cover is provided on the active frame. A flipping motor is disposed inside the protective cover. The flipping motor is connected to another flip plate. A clamping mechanism and a support mechanism are disposed between the flip plates.

[0007] The rotating motor drives the connected flip plate to rotate. Since the two flip plates are connected by a support mechanism and a clamping mechanism, they form a whole and are thus driven to rotate by the rotating motor.

[0008] As a further improvement of the present invention, the support mechanism includes an upper fixed rod and a lower fixed rod. The upper fixed rod is disposed between the upper ends of one side of the flip plate, and the lower fixed rod is disposed between the lower ends of the other side of the flip plate. Multiple support rods are disposed between the upper fixed rod and the lower fixed rod, and a step portion connects the horizontal and vertical portions of the support rods.

[0009] In this way, the upper and lower fixed rods connect the two flaps, while the horizontal end of the support rod is connected to the upper fixed rod, and the vertical end of the support rod is connected to the lower fixed rod. This allows the support rod to be mounted on the upper and lower fixed rods, with the horizontal part of the support rod fitting against the horizontal surface of the sheet metal part, the vertical part of the support rod fitting against the vertical surface of the sheet metal part, and the stepped part of the support rod fitting against the stepped part of the sheet metal part, which can effectively support the sheet metal part.

[0010] As a further improvement of the present invention, the clamping mechanism includes an upper clamping cylinder and a lower clamping cylinder. A pair of upper clamping cylinders are provided and are respectively installed on the top of a pair of flip plates. The telescopic end of the upper clamping cylinder is connected to the upper connecting block, the upper connecting block is connected to the upper slider, the upper slider is connected to the upper slide rail, and the slide rail is provided on the upper outer side of the flip plate. An upper clamping plate is provided between the upper connecting blocks. A pair of lower clamping cylinders are provided and are respectively installed on the lower outer side of the flip plate. The telescopic end of the lower clamping cylinder is connected to the lower connecting plate. A lower slider is provided on the lower connecting plate and is connected to the lower slide rail. The lower slide rail is provided on the lower outer side of the flip plate. A lower clamping rod is connected between the upper end and the lower end of the lower connecting plate, and the lower clamping rod is machined into a C-shape.

[0011] After the sheet metal part is hoisted onto the support rod, the telescopic end of the upper clamping cylinder retracts, causing the upper slider to move along the upper slide rail toward the horizontal end of the sheet metal part. This causes the upper connecting block to move the upper clamping plate toward the horizontal end of the sheet metal part. At the same time, the telescopic end of the lower clamping cylinder retracts, causing the lower slider to move along the lower slide rail toward the vertical surface of the sheet metal part. This causes the lower connecting plate to move the two lower clamping rods toward the vertical surface of the sheet metal part. Finally, the upper clamping plate presses against the horizontal end of the sheet metal part while the lower clamping rods press against the vertical surface of the sheet metal part, thus clamping and fixing the sheet metal part.

[0012] As a further improvement of the present invention, the clamping mechanism also includes a pair of central clamping cylinders, which are installed on the upper outer side of the flap. The telescopic end of the central clamping cylinder is hinged to the lower end of the active swing arm. The upper end of the active swing arm is connected to the lower end of the driven swing arm via a pin shaft. A central clamping rod is connected between the upper ends of the driven swing arms.

[0013] After the upper and lower clamping cylinders are in position and clamp the sheet metal part, the middle clamping cylinder is activated, and its extension end extends outward, causing the main swing arm to swing upward around its lower end. This causes the driven swing arm to swing upward around its lower end, resulting in the middle clamping rod swinging towards the step of the sheet metal part around the lower end of the driven swing arm, and finally pressing against the step of the sheet metal part, thus clamping the middle step of the sheet metal part.

[0014] As a further improvement of the present invention, multiple mounting plates are connected to the horizontal and vertical portions of the support rod. The mounting plates are fixedly connected to the support rod by support bolts, and the ends of the support bolts are provided with flexible pads.

[0015] In this way, when the sheet metal part is placed on the support rod, its horizontal and vertical surfaces come into contact with the flexible pad, avoiding friction between it and the support rod that could cause wear.

[0016] As a further improvement of the present invention, a limiting plate is provided on both the horizontal and vertical portions of the support rod closest to the flip plate.

[0017] After the sheet metal part is placed on the support rod, its horizontal side and vertical side can be tightly attached to the two limiting plates respectively, thus determining the lateral position of the sheet metal part on the support rod.

[0018] As a further improvement of the present invention, a positioning plate is provided on the horizontal part of the support rod closest to the flip plate. A mounting groove is provided on one side of the positioning plate. After the positioning plate is inserted into the mounting groove with bolts, it is screwed and fixedly connected to the screw hole on the support rod. A flexible pad is provided on the other side of the positioning plate. A positioning block is provided on the flexible pad. The positioning block matches the assembly hole on the sheet metal part being processed and its area is smaller than that of the flexible pad.

[0019] When the sheet metal part is placed on the support rod, it can be moved in the longitudinal direction so that the positioning block is inserted into an assembly hole on the horizontal surface of the sheet metal part. This completely fixes the position of the sheet metal part on the support rod, and the sheet metal part cannot be shifted due to force when it is clamped and fixed by the clamping mechanism.

[0020] The top of the upper fixed rod is equipped with an upper support slide rail, and the end of the horizontal part of each support rod is equipped with an upper support slider. The upper support slider matches the upper support slide rail, and the outer end of the upper support slider is equipped with a limit screw. The top of the lower fixed rod is equipped with a lower support slide rail, and the end of the vertical part of each support rod is equipped with a lower support slider. The lower support slider matches the lower support slide rail, and the outer end of the lower support slider is equipped with a limit screw.

[0021] In this way, the upper support slider can move back and forth along the upper support slide rail, and the lower support slider can move back and forth along the lower support slide rail, which makes it easy to adjust the position of the support rod on the upper and lower fixed rods. This allows all the support rods to match the sheet metal parts of the corresponding size and specifications. After the position of the support rod is determined, the limit screw and the lower screw can be screwed on so that the end of the limit screw presses against the upper support slide rail, and the end of the limit screw can press against the lower support slide rail, thereby locking and fixing the position of the support rod. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention in conjunction with the welding robot.

[0023] Figure 2 This is a schematic diagram of the structure for placing sheet metal parts according to the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the present invention.

[0025] Figure 4 This is a structural diagram of sheet metal parts and support rods.

[0026] Figure 5 for Figure 1 A magnified view of a portion of point A in the middle.

[0027] Figure 6 for Figure 2 A magnified view of a section at point B.

[0028] The components include: 1. Welding robot; 2. Upper clamping plate; 3. Sheet metal parts; 4. Protective cover; 5. Driven frame; 6. Tilting column; 7. Upper fixed rod; 8. Base; 9. Middle clamping rod; 10. Lower clamping rod; 11. Driven swing arm; 12. Pin shaft; 13. Active swing arm; 14. Middle clamping cylinder; 15. Positioning block; 16. Limiting plate; 17. Flip plate; 18. Tilting motor; 19. Active frame; 20. Support rod; 21. Upper support slide rail; 22. Flexible pad; 23. Positioning plate; 24. Upper clamping cylinder; 25. Upper slide rail; 26. Upper slider; 27. Lower support slider; 28. Lower fixed rod; 29. ​​Lower support slide rail; 30. Welding hole; 31. Mounting plate; 32. Support bolt; 33. Upper connecting block; 34. Upper support slider; 35. Limiting screw; 36. Lower clamping cylinder; 37. Lower connecting plate; 38. Lower slider; 39. Lower slide rail. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] like Figure 1-6 The table shown is a rotating clamping worktable for stud welding, including a base 8, a rotating mechanism on the base 8, and a clamping mechanism and a support mechanism on the rotating mechanism.

[0031] The flipping mechanism includes a pair of flipping columns 6, which are respectively set at both ends of the base 8. One of the flipping columns 6 has a driven frame 5 on its top, and a driven shaft is set on the driven frame 5. The driven shaft is connected to a flip plate 17. The other flipping column 6 has an active frame 19 on its top, and a protective cover 4 is set on the active frame 19. A flipping motor 18 is set inside the protective cover 4. The flipping motor 18 is connected to another flip plate 17. The clamping mechanism and the support mechanism are set between the flip plates 17.

[0032] The support mechanism includes an upper fixed rod 7 and a lower fixed rod 28. The upper fixed rod 7 is located between the upper ends of one side of the flap 17, and the lower fixed rod 28 is located between the lower ends of the other side of the flap 17. Multiple support rods 20 are provided between the upper fixed rod 7 and the lower fixed rod 28. A step is connected between the horizontal and vertical parts of the support rods 20.

[0033] The clamping mechanism includes an upper clamping cylinder 24 and a lower clamping cylinder 36. A pair of upper clamping cylinders 24 are provided and are respectively installed on the top of a pair of flip plates 17. The telescopic end of the upper clamping cylinder 24 is connected to the upper connecting block 33. The upper connecting block 33 is connected to the upper slider 26. The upper slider 26 is connected to the upper slide rail 25. The slide rail is located on the upper outer side of the flip plate 17. An upper clamping plate 2 is provided between the upper connecting blocks 33. A pair of lower clamping cylinders 36 are provided and are respectively installed on the lower outer side of the flip plate 17. The telescopic end of the lower clamping cylinder 36 is connected to the lower connecting plate 37. A lower slider 38 is provided on the lower connecting plate 37. The lower slider 38 is connected to the lower slide rail 39. The lower slide rail 39 is located on the lower outer side of the flip plate 17. A lower clamping rod 10 is connected between the upper end and the lower end of the lower connecting plate 37. The lower clamping rod 10 is machined into a C-shape.

[0034] The clamping mechanism also includes a pair of central clamping cylinders 14. The central clamping cylinders 14 are installed on the upper outer side of the flap 17. The telescopic end of the central clamping cylinders 14 is hinged to the lower end of the active swing arm 13. The upper end of the active swing arm 13 is connected to the lower end of the driven swing arm 11 via the pin shaft 12. The upper ends of the driven swing arms 11 are connected by a central clamping rod 9.

[0035] Multiple mounting plates 31 are connected to the horizontal and vertical portions of the support rod 20. The mounting plates 31 are fixedly connected to the support rod 20 by support bolts 32, and flexible pads 22 are provided at the ends of the support bolts 32. A limiting plate 16 is provided on both the horizontal and vertical portions of the support rod 20 closest to the flip plate 17.

[0036] A positioning plate 23 is provided on the horizontal part of the support rod 20 closest to the flip plate 17. A mounting groove is provided on one side of the positioning plate 23. After the positioning plate 23 is inserted into the mounting groove with bolts, it is screwed and fixed to the screw hole on the support rod 20. A flexible pad 22 is provided on the other side of the positioning plate 23. A positioning round block 15 is provided on the flexible pad 22. The positioning round block 15 matches the assembly hole on the sheet metal part 3 being processed and its area is smaller than that of the flexible pad 22.

[0037] The top of the upper fixed rod 7 is provided with an upper support slide rail 21, and the end of the horizontal part of each support rod 20 is provided with an upper support slider 34. The upper support slider 34 matches the upper support slide rail 21, and the outer end of the upper support slider 34 is provided with a limit screw 35. The top of the lower fixed rod 28 is provided with a lower support slide rail 29, and the end of the vertical part of each support rod 20 is provided with a lower support slider 27. The lower support slider 27 matches the lower support slide rail 29, and the outer end of the lower support slider 27 is provided with a limit screw 35.

[0038] In this invention, the sheet metal part 3 consists of a horizontal surface, a vertical surface, and a stepped surface, with the stepped surface connecting the horizontal and vertical surfaces. The support rod 20 consists of a horizontal portion, a vertical portion, and a stepped portion. The structure of the sheet metal part 3 matches the structure of the support rod 20. Therefore, the horizontal portion of the support rod 20 fits against the horizontal surface of the sheet metal part 3, the vertical portion of the support rod 20 fits against the vertical surface of the sheet metal part 3, and the stepped portion of the support rod 20 fits against the stepped portion of the sheet metal part 3, thus effectively supporting the sheet metal part 3.

[0039] For sheet metal parts 3 of the same specification, pre-adjustment is required before use. The upper support slider 34 can move back and forth along the upper support slide rail 21, and the lower support slider 27 can move back and forth along the lower support slide rail 29. Adjust the position of the support rod 20 on the upper fixed rod 7 and the lower fixed rod 28 so that all the support rods 20 can match the sheet metal parts 3 of the corresponding specifications and sizes. After the position of the support rod 20 is determined, the limit screw 35 and the lower screw can be screwed on so that the end of the limit screw 35 presses against the upper support slide rail 21 and the end of the limit screw 35 presses against the lower support slide rail 29, thereby locking and fixing the position of the support rod 20. Then, by loosening the bolts, the position of the positioning plate 23 on the support rod 20 is adjusted so that after the sheet metal part 3 is placed on the support rod 20, the positioning block 15 on the other side of the positioning plate 23 can be inserted into the corresponding assembly hole on the horizontal surface of the sheet metal part 3. Then, the positioning plate 23 in this state is tightened and fixed with bolts. In this way, the position of the positioning plate 23 can be fixed so that it can be used for sheet metal parts 3 of the same specification.

[0040] After the sheet metal part 3 is hoisted onto the support rod 20, one side of the horizontal plane and one side of the vertical plane of the sheet metal part 3 can respectively adhere tightly to the two limiting plates 16, thus determining the lateral position of the sheet metal part 3 on the support rod 20. Then, the sheet metal part 3 is moved in the longitudinal direction so that the positioning block 15 is inserted into an assembly hole on the horizontal plane of the sheet metal part 3. This completely fixes the position of the sheet metal part 3 on the support rod 20, and when it is clamped and fixed by the clamping mechanism, the sheet metal part 3 cannot shift due to force.

[0041] At this time, the telescopic end of the upper clamping cylinder 24 retracts, causing the upper slider 26 to move along the upper slide rail 25 toward the end of the sheet metal part 3 on the horizontal plane. This causes the upper connecting block 33 to drive the upper clamping plate 2 to move toward the end of the sheet metal part 3 on the horizontal plane. At the same time, the telescopic end of the lower clamping cylinder 36 retracts, causing the lower slider 38 to move along the lower slide rail 39 toward the vertical plane of the sheet metal part 3. This causes the lower connecting plate 37 to drive the two lower clamping rods 10 to move toward the vertical plane of the sheet metal part 3. Finally, the upper clamping plate 2 presses against the end of the sheet metal part 3 on the horizontal plane, while the lower clamping rods 10 press against the vertical plane of the sheet metal part 3, thereby clamping and fixing the sheet metal part 3.

[0042] After the sheet metal part 3 is clamped on the horizontal and vertical planes, the middle clamping cylinder 14 is activated, and its telescopic end extends outward, causing the main swing arm to swing upward around its lower end. This causes the driven swing arm 11 to swing upward around its lower end, thereby causing the middle clamping rod 9 to swing towards the step of the sheet metal part 3 around the lower end of the driven swing arm 11, and finally press against the step of the sheet metal part 3, thus clamping the middle step of the sheet metal part 3.

[0043] Since the upper fixed rod 7 and the lower fixed rod 28 connect the two flaps 17, and the end of the horizontal part of the support rod 20 is connected to the upper fixed rod 7, and the end of the vertical part of the support rod 20 is connected to the lower fixed rod 28, the support rod 20 is mounted on the upper and lower fixed rods 28. Therefore, the flaps 17, the support mechanism and the clamping mechanism form a whole, and the flipping motor 18 can drive this whole to rotate.

[0044] After the sheet metal part 3 is clamped, the welding robot 1 sequentially welds the pre-drilled welding holes 30 on the horizontal surface of the sheet metal part 3 to the studs. After the horizontal surface welding is completed, the flip motor 18 rotates, causing the entire assembly consisting of the flip plate 17, the support mechanism, and the clamping mechanism to rotate together. This causes the sheet metal part 3, which is clamped and fixed on the support rod 20, to rotate 90 degrees, thereby turning the vertical surface of the sheet metal part 3 into a horizontal state. This allows the welding robot 1 to easily weld the studs to the pre-drilled welding holes 30 on the vertical surface of the sheet metal part 3.

[0045] After both sides of the sheet metal part 3 are welded, the flipping motor 18 rotates in the opposite direction, causing the sheet metal part 3 to return to its original position. At this time, the clamping mechanism moves in the opposite direction, thereby detaching the upper clamping plate 2, the middle clamping rod 9 and the lower clamping rod 10 from the sheet metal part 3, and then the sheet metal part 3 is transferred away from the workbench by the overhead crane.

[0046] This invention can properly place and tighten the sheet metal parts 3 of the assembled air box, and weld the studs on its horizontal surface by the welding robot 1. It can also automatically rotate 90 degrees, which makes it convenient for the welding robot 1 to weld the studs on its vertical surface, thereby effectively improving welding efficiency and saving time and effort.

[0047] This invention is not limited to the above embodiments. Based on the technical solutions disclosed herein, those skilled in the art can make some substitutions and modifications to some of the technical features without creative effort, and all such substitutions and modifications are within the protection scope of this invention.

Claims

1. A flipping clamping worktable for stud welding, characterized in that: Includes a base, on which a flipping mechanism is provided, and on which a clamping mechanism and a support mechanism are provided; The tilting mechanism includes a pair of tilting columns, which are respectively set at both ends of the base. One of the tilting columns has a driven frame on its top, and a driven shaft is set on the driven frame. The driven shaft is connected to a flap plate. The other tilting column has an active frame on its top, and a protective cover is set on the active frame. A tilting motor is set inside the protective cover. The tilting motor is connected to another flap plate. A clamping mechanism and a support mechanism are set between the flap plates. The support mechanism includes an upper fixed rod and a lower fixed rod. The upper fixed rod is located between the upper ends on one side of the flap, and the lower fixed rod is located between the lower ends on the other side of the flap. Multiple support rods are provided between the upper fixed rod and the lower fixed rod, and a stepped section connects the horizontal and vertical parts of the support rods. The clamping mechanism includes an upper clamping cylinder and a lower clamping cylinder. There is a pair of upper clamping cylinders, which are respectively installed on the top of a pair of flip plates. The telescopic end of the upper clamping cylinder is connected to the upper connecting block. The upper connecting block is connected to the upper slider. The upper slider is connected to the upper slide rail. The slide rail is located on the upper outer side of the flip plate. An upper clamping plate is provided between the upper connecting blocks. A pair of lower clamping cylinders are provided, which are respectively installed on the lower outer side of the flap. The telescopic end of the lower clamping cylinder is connected to the lower connecting plate. The lower connecting plate is provided with a lower slider, which is connected to the lower slide rail. The lower slide rail is located on the lower outer side of the flap. A lower clamping rod is connected between the upper end and the lower end of the lower connecting plate. The lower clamping rod is machined into a C shape. The clamping mechanism also includes a pair of central clamping cylinders, which are installed on the upper outer side of the flap. The telescopic end of the central clamping cylinder is hinged to the lower end of the active swing arm. The upper end of the active swing arm is connected to the lower end of the driven swing arm via a pin shaft. A central clamping rod is connected between the upper ends of the driven swing arms.

2. The flipping clamping worktable for stud welding according to claim 1, characterized in that: Multiple mounting plates are connected to the horizontal and vertical parts of the support rod. The mounting plates are fixedly connected to the support rod by support bolts, and the ends of the support bolts are provided with flexible pads.

3. The flipping clamping worktable for stud welding according to claim 2, characterized in that: A limiting plate is installed on both the horizontal and vertical sections of the support rod closest to the flip panel.

4. The flipping clamping worktable for stud welding according to claim 3, characterized in that: A positioning plate is installed on the horizontal part of the support rod closest to the flip plate. A mounting groove is opened on one side of the positioning plate. After the positioning plate is inserted into the mounting groove with bolts, it is screwed and fixed to the screw hole on the support rod. A flexible pad is provided on the other side of the positioning plate. A positioning block is provided on the flexible pad. The positioning block matches the assembly hole on the sheet metal part being processed and its area is smaller than that of the flexible pad.

5. The flipping clamping worktable for stud welding according to claim 4, characterized in that: The top of the upper fixed rod is equipped with an upper support slide rail, and the end of the horizontal part of each support rod is equipped with an upper support slider. The upper support slider matches the upper support slide rail, and the outer end of the upper support slider is equipped with a limit screw. The top of the lower fixed rod is equipped with a lower support slide rail, and the end of the vertical part of each support rod is equipped with a lower support slider. The lower support slider matches the lower support slide rail, and the outer end of the lower support slider is equipped with a limit screw.

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