Rim raw material welding and fixing equipment

Abstract

The invention discloses rim raw material welding and fixing equipment. The rim raw material welding and fixing equipment comprises a welding mechanical arm and fixing equipment. The fixing device is composed of a first positioning assembly and a second positioning assembly. When the electromagnetic part is powered on, the pressure applying part is attracted, the first spring is kept compressed, the elastic part opens the retaining part, and the retaining part is in separated contact with the pushing part. According to the rim raw material welding and fixing equipment, through cooperation of the first positioning assembly and the second positioning assembly, accurate positioning of rim raw materials is achieved, and position deviation cannot occur during welding. And meanwhile, two procedures are achieved on one station, welding work can be achieved, redundant welding spots can be removed through a pushing piece in the second positioning assembly, and subsequent machining work is facilitated. In addition, adaptive adjustment can be carried out according to the width of rim raw materials needing to be machined, positioning operation is carried out on the rim raw materials with different widths, and the adaptive capacity and practicability of the fixing equipment are improved.

Description

Technical Field

[0001] This invention relates to welding technology, and more particularly to a welding and fixing device for wheel rim raw materials. Background Technology

[0002] The wheel rim is a crucial component of a wheel. During manufacturing, the rim needs to be shaped and molded before the spokes are welded to it. However, the rim itself also requires welding during manufacturing. This involves gathering the cut sheet metal into a circle and welding it. To prevent misalignment during welding, it needs to be positioned precisely to ensure welding accuracy.

[0003] CN215509728U discloses a welding auxiliary tooling for wheel rim strips, which uses a push-type structure to push and position the wheel rim strips to ensure welding accuracy. However, after welding, excess weld points that have not cooled cannot be removed, increasing the difficulty of subsequent cleaning. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention proposes a welding and fixing device for wheel rim raw materials.

[0005] A welding and fixing device for wheel rim raw materials, characterized in that it comprises: Welding robotic arm; A fixing device for positioning wheel rim raw materials, the fixing device consists of a first positioning component and a second positioning component. The first positioning component is used to bring the wheel rim raw materials together to form a circle, and the second positioning component is used to align the two sides of the misaligned wheel rim raw materials. The first positioning component is provided with a positioning seat, a motor and symmetrically arranged clamping blocks. The motor is located at the lower end of the positioning seat and has a rotating shaft. The symmetrically arranged clamping blocks are respectively connected to the rotating shaft. The positioning seat has a support plate, and the second positioning component is mounted on the support plate. The second positioning assembly includes a support base, a cylinder, a pusher, and a limiting member. The positioning base has a mounting groove that mates with the support base. The cylinder is mounted on the support base, and the pusher is connected to the cylinder. The limiting member is fitted over the pusher, and a mounting sleeve is connected to the end of the limiting member near the cylinder. The mounting sleeve contains an electromagnetic component, a first spring, a pressure-applying component, an elastic component, and multiple retaining components. The elastic component is located in the middle of the retaining components, and the retaining components are in contact with the pusher due to the elastic force of the elastic component. The pressure-applying component is in contact with the retaining components. The first spring is located between the pressure-applying component and the electromagnetic component. A second spring is located between the mounting sleeve and the cylinder. When the cylinder drives the pushing component to move, the retaining component drives the limiting component to move. When the electromagnetic component is energized, it attracts the pressure component, keeping the first spring compressed. The elastic component expands the retaining component, causing the retaining component to separate from the pushing component.

[0006] In this invention, the rotating shaft is provided with a first threaded portion and a second threaded portion, the thread directions of the first threaded portion and the second threaded portion are opposite, the clamping block is provided with a moving block that cooperates with the rotating shaft, the clamping block is provided with a dovetail block, and the positioning seat is provided with a dovetail groove that cooperates with the dovetail block.

[0007] In this invention, the support base is composed of a first stepped surface, a second stepped surface, and a third stepped surface, wherein the height of the first stepped surface is greater than the height of the second stepped surface, and the height of the second stepped surface is greater than the height of the third stepped surface.

[0008] In this invention, the pushing member is composed of a first rod and a second rod. The first rod has multiple limiting grooves, and the second rod has an inclined surface and symmetrically arranged sliding blocks.

[0009] In this invention, a through hole is formed in the middle of the limiting member, the pushing member is disposed in the through hole, one end of the pushing member is formed with an avoidance notch, the other end is formed with an installation protrusion, and a sliding groove that cooperates with the sliding block is provided in the through hole.

[0010] In this invention, a mounting hole is formed in the middle of the mounting protrusion, the mounting hole is connected to the through hole, the inner diameter of the mounting hole is larger than the inner diameter of the through hole, the outer wall of the mounting protrusion is provided with external threads, and a blocking surface is formed at the connection between the mounting hole and the through hole.

[0011] In this invention, the retaining member is composed of a blocking plate and symmetrically arranged sliding plates, and an inclined block is formed between the sliding plates. One side of the inclined block is provided with a first guiding inclined surface, and the other side is provided with a limiting tooth and an arc-shaped groove. The elastic member is disposed in the arc-shaped groove.

[0012] In this invention, the mounting hole is provided with a second guide slope that cooperates with the first guide slope and a sliding opening that cooperates with the slide plate, the length of the sliding opening being greater than the length of the slide plate.

[0013] In this invention, the pressure-applying component is composed of a first cylinder and a second cylinder, wherein the diameter of the first cylinder is larger than the diameter of the second cylinder, and an insertion hole is formed between the first cylinder and the second cylinder.

[0014] In this invention, the mounting sleeve has a mounting area and a through hole in the middle, the inner diameter of the through hole is smaller than the inner diameter of the mounting area, the second cylinder is disposed in the through hole, and the inner wall of the mounting area is provided with internal threads.

[0015] The wheel rim raw material welding and fixing device of this invention has the following advantages: Through the cooperation of the first and second positioning components, the device achieves precise positioning of the wheel rim raw material, preventing positional shifts during welding. Simultaneously, it performs two processes at one station, enabling welding and allowing the removal of excess weld points via the pusher in the second positioning component, facilitating subsequent processing. Furthermore, it can be adapted to the width of the wheel rim raw material to be processed, enabling positioning operations for wheel rim raw materials of different widths, thus improving the adaptability and practicality of the fixing device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the rim raw material welding and fixing equipment of the present invention; Figure 2 for Figure 1 A schematic diagram of the fixed equipment structure in the diagram; Figure 3 for Figure 2 A schematic diagram of the structure in another direction; Figure 4 for Figure 2 Exploded view; Figure 5 for Figure 4 A schematic diagram of the second positioning component structure; Figure 6 for Figure 5 Main perspective view; Figure 7 for Figure 5 Exploded view; Figure 8 for Figure 7 A schematic diagram of the pushing component structure in the middle; Figure 9 for Figure 7 A schematic diagram of the limiting component structure in the middle; Figure 10 for Figure 9 A schematic diagram of the structure in another direction; Figure 11 for Figure 10 Enlarged view of section A in the image; Figure 12 for Figure 7 A schematic diagram of the retainer structure in the middle; Figure 13 for Figure 7 A schematic diagram of the elastic element structure in the diagram; Figure 14 for Figure 7 A schematic diagram of the pressure-applying component, the first spring, the electromagnetic component, and the mounting sleeve. Figure 15This is a schematic diagram of the limiting member, pushing member, holding member, first spring, second spring, mounting sleeve and pressure applying member in this invention; Figure 16 for Figure 15 A magnified view of section B in the image.

[0017] In the diagram: 1. Welding robotic arm; 2. Fixing device; 3. First positioning component; 4. Second positioning component; 5. Pushing component; 6. Wheel rim raw material; 7. Positioning seat; 8. Motor; 9. Clamping block; 10. Rotating shaft; 11. Support plate; 12. First threaded part; 13. Second threaded part; 14. Moving block; 15. Positioning slide; 16. Threaded hole; 17. Dovetail block; 18. Dovetail groove; 19. Clamping opening; 20. Support seat; 21. Cylinder; 22. Limiting component; 23. Mounting groove; 24. Mounting sleeve; 25. Electromagnetic component; 26. First spring; 27. Pressure applying component; 28. Elastic component; 29. ​​Holding component; 30. Second spring; 31. First guide slope; 32. Limiting component. 33. Tooth 34. Limiting groove 35. First stepped surface 36. Second stepped surface 37. Third stepped surface 38. First rod 39. Second rod 39. Inclined surface 40. Sliding block 41. Sliding groove 42. Through hole 43. Avoidance notch 44. Mounting protrusion 45. Mounting hole 46. External thread 47. Blocking surface 48. Blocking plate 49. Slide plate 50. Inclined block 51. Arc groove 52. Mounting notch 53. Sliding opening 54. Contraction notch 55. Elastic area 56. Release hole 57. First cylinder 58. Second cylinder 59. Insertion hole 60. Through hole 61. Mounting area 62. Flat part 63. Weld 64. Internal thread 65. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] like Figures 1 to 16As shown, this invention relates to a welding and fixing device for wheel rim raw materials. The device comprises a welding robotic arm 1 and a fixing device 2. The welding robotic arm 1 can employ existing welding structures, so they will not be described in detail here. The fixing device 2 is used to gather the plates to be welded into a circle. However, when forming a circle, misalignment may occur at the ends of the plates during alignment when the plates are pushed by force, resulting in the two sides of the plates not being on the same vertical plane. This can cause the plates to twist, affecting the forming accuracy of the wheel rim raw material 6. Therefore, the fixing device 2 uses the cooperation of the first positioning component 3 and the second positioning component 4 to gather and align the plates, facilitating welding by the welding robotic arm 1. The welding method can employ laser wire welding. Finally, after welding, the pusher 5 in the second positioning component 4 can remove excess weld points from the welded edges while they are still warm, enabling two processes to be completed in one station, further improving work efficiency.

[0020] The fixing device 2 is used to position the rim raw material 6. The fixing device 2 consists of a first positioning component 3 and a second positioning component 4. The second positioning component 4 is set on the first positioning component 3, so that the first positioning component 3 and the second positioning component 4 cooperate with each other to achieve the positioning of the plate.

[0021] The first positioning component 3 is used to bring together the rim raw material 6 to form a circle, and the second positioning component 4 is used to align the two sides of the misaligned rim raw material 6. The first positioning component 3 is provided with a positioning seat 7, a motor 8, and symmetrically arranged clamping blocks 9. The motor 8 is located at the lower end of the positioning seat 7 and has a rotating shaft 10. The symmetrically arranged clamping blocks 9 are respectively connected to the rotating shaft 10. The positioning seat 7 is provided with a support plate 11, and the second positioning component 4 is mounted on the support plate 11.

[0022] The rotating shaft 10 has a first threaded portion 12 and a second threaded portion 13, with the threads of the first threaded portion 12 and the second threaded portion 13 having opposite directions. The clamping block 9 has a movable block 14 that mates with the rotating shaft 10. A positioning slide 15 is provided on the positioning seat 7, and the movable block 14 is disposed therein. The movable block 14 has a threaded hole 16 that mates with the first threaded portion 12 and the second threaded portion 13. The clamping block 9 has a dovetail block 17, and the positioning seat 7 has a dovetail groove 18 that mates with the dovetail block 17. The rotating shaft 10 is driven by the motor 8, causing it to rotate. Because the threads of the first threaded portion 12 and the second threaded portion 13 on the rotating shaft 10 have opposite directions, this causes the symmetrically arranged clamping blocks 9 to separate or move closer together. Furthermore, the dovetail groove 18 and the dovetail block 17 work together to achieve the sliding trajectory of the clamping blocks 9.

[0023] A clamping opening 19 is formed in the middle of the clamping block 9. The inner diameter of the clamping opening 19 is smaller than the diameter of the rim material 6 to be formed, so that the clamping block 9 only needs to gather the plate and then align it to clamp and apply pressure to ensure that the two ends of the plate are in close contact. Then, it works with the second positioning component 4 to achieve positioning on both sides.

[0024] The second positioning component 4 includes a support base 20, a cylinder 21, a pusher 5, and a limiting member 22. The positioning base 7 has an installation groove 23 that mates with the support base 20. The cylinder 21 is mounted on the support base 20. The pusher 5 is connected to the cylinder 21. The limiting member 22 is fitted over the pusher 5.

[0025] A mounting sleeve 24 is connected to one end of the limiting member 22 near the cylinder 21. The mounting sleeve 24 is equipped with an electromagnetic member 25, a first spring 26, a pressure member 27, an elastic member 28, and multiple retaining members 29. The elastic member 28 is located in the middle of the retaining members 29. The retaining members 29 are in contact with the pushing member 5 due to the elastic force of the elastic member 28. The pressure member 27 is in contact with the retaining member 29. The first spring 26 is located between the pressure member 27 and the electromagnetic member 25. A second spring 30 is provided between the mounting sleeve 24 and the cylinder 21.

[0026] When cylinder 21 moves the pushing member 5, it moves the limiting member 22 via the retaining member 29. This allows the pushing member 5 to move the limiting member 22, making the pushing member 5 and the limiting member 22 an integrated structure. When it is necessary to remove excess weld points, simply energize the electromagnetic member 25 to attract the pressure member 27, keeping the first spring 26 compressed. The elastic member 28 opens the retaining member 29, and the retaining member 29 moves with the pressure member 27 through the cooperation of the first guide slope 31 and the second guide slope 32, thereby increasing the inner diameter between the retaining members 29. The limiting teeth 33 and the limiting groove 34 disengage, causing the retaining member 29 to separate from the pushing member 5. When cylinder 21 is activated, it can only move the pushing member 5 forward to remove excess weld points. The limiting member 22, under the elastic force of the second spring 30, continues to restrict the position of the rim material 6.

[0027] The support base 20 consists of a first stepped surface 35, a second stepped surface 36, and a third stepped surface 37. The height of the first stepped surface 35 is greater than the height of the second stepped surface 36, and the height of the second stepped surface 36 is greater than the height of the third stepped surface 37. The cylinder 21 is mounted on the third stepped surface 37, and the limiting member 22 is mounted on the upper end of the third stepped surface 37 and connected to the limiting member 22 via the pushing member 5. The second stepped surface 36 is used to support the rim material 6, and the first stepped surface 35 is used to block the position of the rim material 6, cooperating with the limiting member 22 to achieve blocking.

[0028] When the rim raw material 6 is gathered, both ends are kept as flat parts 63, which allows the welding robot arm 1 to better weld the weld seam 64.

[0029] When the rim raw material 6 is placed into the clamping opening 19, it can be pre-formed and clamped tightly to keep both ends of the rim raw material 6 as flat portions 63. It will slightly open under its own elasticity, so it needs to be clamped by the clamping block 9 to ensure contact between the two ends and to ensure welding accuracy.

[0030] The pusher 5 consists of a first rod 38 and a second rod 39. The first rod 38 has multiple limiting grooves 34, which cooperate with the limiting teeth 33 on the retainer 29 to limit movement. The second rod 39 has an inclined surface 40 and symmetrically arranged sliding blocks 41. The inclined surface 40 is used to remove excess weld points, while the sliding blocks 41 cooperate with the sliding grooves 42 inside the limiting member 22 to slide along the sliding grooves 42, preventing positional deviation.

[0031] The limiting member 22 has a through hole 43 in the middle, and the pushing member 5 is set in the through hole 43. One end of the pushing member 5 has an avoidance notch 44, and the other end has an installation protrusion 45. The through hole 43 is provided with a sliding groove 42 that cooperates with the sliding block 41.

[0032] The clearance notch 44 is used to position the rim material 6 of different widths. Since the tires are different sizes, the wheel sizes need to match each other. The larger the tire size, the wider the tire needs to be. Therefore, the width of the rim material 6 also needs to be increased. So, in order to adapt to the rim material 6 of different widths, it is necessary to ensure that the limiting part 22 can position the rim material 6 of different widths.

[0033] The width of the clamping opening 19 is the maximum width of the rim material 6 to be processed. When the M surface inside the clearance notch 44 contacts the clamping block 9, it indicates the minimum width distance of the positioning member 22 for positioning the rim material 6. Therefore, the clearance notch 44 can accommodate rim materials 6 of different widths, thereby improving the adaptability of the fixing device 2.

[0034] A mounting hole 46 is formed in the middle of the mounting protrusion 45. The mounting hole 46 communicates with the through hole 43. The inner diameter of the mounting hole 46 is larger than the inner diameter of the through hole 43, so that the retainer 29 will not enter the through hole 43. The outer wall of the mounting protrusion 45 is provided with external threads 47. A blocking surface 48 is formed at the connection between the mounting hole 46 and the through hole 43. The blocking surface 48 is used to block the retainer 29.

[0035] The retaining member 29 consists of a blocking plate 49 and symmetrically arranged sliding plates 50. The blocking plate 49 is used to cooperate with the mounting protrusion 45 for limiting the movement. An inclined block 51 is formed between the sliding plates 50. One side of the inclined block 51 has a first guide slope 31, and the other side has a limiting tooth 33 and an arc-shaped groove 52. The elastic member 28 is disposed in the arc-shaped groove 52. The upper end of the first guide slope 31 forms a mounting notch 53 to facilitate cooperation with the second guide slope 32.

[0036] Meanwhile, the mounting hole 46 is provided with a second guide slope 32 that mates with the first guide slope 31 and a sliding opening 54 that mates with the slide plate 50. The length of the sliding opening 54 is greater than the length of the slide plate 50. This ensures that when the first guide slope 31 slides along the second guide slope 32 toward the pressure member 27, the slide plate 50 can remain within the sliding opening 54, preventing the slide plate 50 from being unable to move due to the short length of the sliding opening 54.

[0037] The elastic element 28 is arc-shaped and has a contraction notch 55. An elastic region 56 is formed in the middle of the elastic element 28.

[0038] The elastic element 28 has release holes 57 at both ends to facilitate its installation and removal. The diameter of the elastic element 28 when not installed is larger than its diameter after installation, and the elastic force of the elastic element 28 is less than that of the first elastic element 28.

[0039] When the limiting tooth 33 engages with the limiting groove 34 to limit the movement, the elastic element 28 is in a contracted state with the smallest diameter. At this time, the first spring 26 is in a slightly compressed state, but its elastic force is still greater than that of the elastic element 28. Therefore, the pressure element 27 can be pushed, thereby pushing the retaining element 29 through the pressure element 27, so that the limiting tooth 33 on the retaining element 29 engages with the limiting groove 34 to limit the movement.

[0040] When the electromagnetic component 25 is energized, it attracts the pressure component 27, which compresses the first spring 26. The first spring 26 then releases its pushing force on the pressure component 27, and the elastic component 28, no longer pushed by the pressure component 27, resets itself. This causes multiple retaining components 29 to open, and the sliding of the first guide ramp 31 and the second guide ramp 32 brings the retaining components 29 closer to the pressure component 27, separating the limiting teeth 33 from the limiting grooves 34. When the cylinder 21 is activated again, it drives the pushing component 5 to remove multiple weld points.

[0041] Since the mounting sleeve 24 is connected to the limiting member 22, and a second spring 30 is provided between the mounting sleeve 24 and the cylinder 21, the position of the cylinder 21 remains unchanged. Therefore, the second spring 30 will apply pressure to the limiting member 22. Even when the limiting member 22 is not in contact with the pushing member 5, it will still apply external force to position the rim material 6.

[0042] When the M surface within the clearance notch 44 contacts the clamping block 9, the second spring 30 is still in a compressed state, rather than in a natural state, so it can be positioned for rim raw materials 6 of different widths.

[0043] The pressure-applying component 27 consists of a first cylindrical body 58 and a second cylindrical body 59. The diameter of the first cylindrical body 58 is larger than the diameter of the second cylindrical body 59. An insertion hole 60 is formed between the first and second cylindrical bodies 58 and 59. The first rod 38 of the pushing component 5 is disposed within the insertion hole 60. The first cylindrical body 58 is used to push the retaining component 29. The second cylindrical body 59 is disposed within the through hole 61. The diameter of the first cylindrical body 58 matches the inner diameter of the mounting area 62. The second cylindrical body 59 is disposed in the middle of the electromagnetic component 25, such that the first cylindrical body 58 is made of a magnetic material, while the second cylindrical body 59 is made of a non-magnetic material, ensuring that the electromagnetic component 25 attracts the first cylindrical body 58 instead of the second cylindrical body 59.

[0044] The mounting sleeve 24 has a mounting area 62 and a through hole 61 in the middle. The inner diameter of the through hole 61 is smaller than the inner diameter of the mounting area 62. The second cylinder 59 is set in the through hole 61. The inner wall of the mounting area 62 is provided with an internal thread 65, which is connected to the external thread 47.

[0045] Meanwhile, when positioning the rim material 6 by the limiting member 22, the pushing member 5 can be pushed by the cylinder 21, which will then drive the limiting member 22 to apply pressure to the rim material 6. Alternatively, when the clamping block 9 clamps the rim material 6, the cylinder 21 can be de-vented and the mounting sleeve 24 can be pushed by the elastic force of the second spring 30, which will push the limiting member 22. The elastic force of the second spring 30 will then limit the position of the rim material 6, ensuring the alignment of both sides of the rim material 6.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rim raw material welding fixing apparatus characterized by comprising: The utility model relates to a welding robot, a fixing device for positioning rim raw materials, the fixing device is composed of first positioning assembly and second positioning assembly, the first positioning assembly is used for closing rim raw materials to form a circle, the second positioning assembly is used for aligning both sides of misaligned rim raw materials, the first positioning assembly is equipped with positioning seat, motor and the symmetrically arranged clamping block, the motor sets up in the lower end of positioning seat, the motor is equipped with rotating shaft, and the symmetrically arranged clamping block is connected with rotating shaft respectively, the positioning seat is equipped with support plate, and the second positioning assembly is installed on the support plate, The second positioning assembly is equipped with support seat, cylinder, pusher and limiting piece, the positioning seat is equipped with the installation groove that cooperates with support seat, the cylinder sets up on support seat, the pusher is connected with cylinder, the limiting piece is covered in the outside of pusher, one mounting sleeve is connected on the end close to cylinder of limiting piece, the inside of mounting sleeve is equipped with electromagnetic element, first spring, pressure applying piece, elastic piece and multiple retaining pieces, the elastic piece is located in the middle of retaining piece, the retaining piece is contacted with pusher by the elastic force of elastic piece, the pressure applying piece is contacted with retaining piece, the first spring is between pressure applying piece and electromagnetic element, the second spring is arranged between mounting sleeve and cylinder, When the cylinder drives the pusher to move, the retaining piece is driven to move by the limiting piece, When the electromagnetic element is electrified, the pressure applying piece is attracted, the first spring is compressed, the elastic piece is opened, the retaining piece is separated from the pusher. The rotating shaft is equipped with first threaded part and second threaded part, the thread direction of first threaded part and second threaded part is opposite, the clamping block is equipped with moving block that cooperates with rotating shaft, the clamping block is equipped with dovetail block, the positioning seat is equipped with dovetail groove that cooperates with dovetail block. The support seat is composed of first stepped surface, second stepped surface and third stepped surface, the height of first stepped surface is greater than the height of second stepped surface, and the height of second stepped surface is greater than the height of third stepped surface.

2. The rim raw material welding fixture apparatus according to claim 1, characterized by, The pusher is composed of first rod body and second rod body, the first rod body is equipped with multiple limiting grooves, the second rod body is equipped with inclined surface and symmetrically arranged sliding block.

3. The rim raw material welding fixture apparatus according to claim 1, characterized by, The limiting piece is formed with through hole in the middle, the pusher is arranged in the through hole, one end of the pusher is formed with avoiding notch, the other end is formed with mounting protrusion, the through hole is equipped with sliding groove that cooperates with sliding block.

4. The rim material welding fixture apparatus according to claim 1, wherein The mounting protrusion is formed with mounting hole in the middle, the mounting hole is communicated with the through hole, the inner diameter of mounting hole is greater than the inner diameter of through hole, the outer wall of mounting protrusion is equipped with external thread, and the connecting place of mounting hole and through hole forms blocking surface.

5. The rim raw material welding fixture apparatus according to claim 4, characterized by, The retaining piece is equipped with blocking plate and symmetrically arranged sliding plate, the sliding plate and sliding plate are formed with inclined block between them, one side of inclined block is equipped with first guide inclined surface, the other side is equipped with limiting teeth and arc-shaped groove, and the elastic piece is arranged in the arc-shaped groove.

6. The rim raw material welding fixture apparatus according to claim 5, wherein The mounting hole is equipped with second guide inclined surface that cooperates with first guide inclined surface and sliding opening that cooperates with sliding plate, and the length of sliding opening is greater than the length of sliding plate.

7. The rim raw material welding fixture apparatus according to claim 6, wherein ​ 8. The rim raw material welding fixture apparatus according to claim 7, characterized by, ​ 9. The rim material welding fixture apparatus of claim 1, wherein, The pressure applying part is composed of a first cylinder and a second cylinder, the diameter of the first cylinder is larger than that of the second cylinder, and the middle of the first cylinder and the second cylinder forms an insertion hole.

10. The rim raw material welding fixture apparatus according to claim 9, wherein The middle of the mounting sleeve is provided with a mounting area and a through hole, the inner diameter of the through hole is smaller than that of the mounting area, the second cylinder is arranged in the through hole, and an inner thread is arranged on the inner wall of the mounting area.

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