A positioning fixture for large gear welding

Abstract

The present invention relates to the technical field of gear welding, and discloses a positioning fixture for large gear welding, comprising a support plate, an outer surface of the support plate is fixedly connected to a welding table, a lower surface of the welding table is fixedly connected to a connecting block, a lower surface of the connecting block is fixedly connected to a double-actuator linear motor, an upper surface of the welding table is fixedly connected to a guide rail, an inner surface of the guide rail is slidably connected to a guide block, a top end of the guide block is fixedly connected to a positioning clamping block, and a bottom end of the guide block is fixedly connected to a sliding shaft. In the present invention, four positioning clamping blocks approach the center of the welding table to clamp the gear, making clamping faster and more convenient, thereby improving processing efficiency, and after a plurality of adjustment clamping blocks are adjusted to the same height by a plurality of sliding screws respectively, the gear can be pressed from the top by the pulling force of an elastic telescopic rod, thereby improving clamping stability, thereby making gear welding more precise.

Description

Technical Field

[0001] The invention relates to the technical field of gear welding, in particular to a positioning fixture for welding large gears. Background Art

[0002] During the welding process of large gears, the gears need to be positioned and clamped by a fixture to ensure the stability of the gears during the welding process, so as to ensure the precision and quality of the gear processing. The existing gear welding positioning fixture is slow in the clamping process and cannot perform all-round processing on gears of different diameters and thicknesses, and has low applicability.

[0003] The patent with patent number CN220637829U discloses a gear cutting clamping device, which sets the workpiece on the fixed rod, starts the first motor, and the first motor drives the first rotating rod to rotate. The first movable plate and the second movable plate screwed with the first screw will approach each other until the fixed cylinder and the fixed rod are slidably mounted. One of the connecting rods of the fixed cylinder cooperates to clamp the workpiece, and the protrusion on the fixed rod is clamped with the keyway on the workpiece to limit it. Then it can be cut by the cutting mechanism, and the second motor is started. The second motor drives one of the second rotating rods to rotate through the meshing of two bevel gears, so that the workpiece rotates and performs circumferential cutting on the workpiece. This process realizes a process that is easy to clamp, improves work efficiency, and thus enhances practicality. Although the patent solves the above problems, it still has the problems of being unable to quickly clamp gears of different diameters and thicknesses, cumbersome operation, and low clamping stability. Therefore, a large gear welding positioning fixture is proposed to solve the above problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a large gear welding positioning fixture in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a large gear welding positioning fixture, comprising a support plate, the outer surface of the support plate is fixedly connected to a welding table, the lower surface of the welding table is fixedly connected to a connecting block, the lower surface of the connecting block is fixedly connected to a double-motor linear motor, the upper surface of the welding table is fixedly connected to a guide rail, the inner surface of the guide rail is slidably connected to a guide block, the top end of the guide block is fixedly connected to a positioning clamping block, the bottom end of the guide block is fixedly connected to a sliding shaft, the inner surface of the double-motor linear motor is slidably connected to a slide groove transmission member, the positioning clamping block is close to the double-motor linear motor An adjusting groove is provided on one side, a positioning groove is provided on the side of the positioning clamp block, an elastic telescopic rod is fixedly connected to the bottom surface of the inner wall of the adjusting groove, a clamping block is fixedly connected to the top of the elastic telescopic rod, an adjusting clamping block is fixedly connected to the side of the clamping block close to the double-motor linear motor, a sliding screw is slidably connected to the inner surface of the positioning groove, a positioning nut is threadedly connected to the circumferential surface of the sliding screw, an anti-splash device for preventing sparks and debris from splashing around during welding is provided on the outer side of the welding table, a waste collection device for collecting waste to prevent waste from adhering to various parts of the device and being difficult to clean is provided below the welding table, and the guide block and the inner surface of the welding table are The two guide blocks are connected to each other by sliding on the guide rail, the two guide blocks are connected to each other by sliding on the guide rail, and the two guide blocks are connected to each other by sliding on the guide rail. The four positioning clamps are driven to approach the center of the welding table to clamp the gear, making clamping faster and more convenient, thereby improving processing efficiency. After the positioning clamp clamps the gear, the sliding screw is pulled upward, and the sliding screw contacts the clamp block and drives it to move upward, and the clamp block then drives the adjusting clamp block to move upward, so that the adjusting clamp block can be adjusted to different heights according to the thickness of the gear, and then the positioning nut is rotated. When the positioning nut is rotated to conflict with the positioning clamp block, the sliding screw can be stuck in the adjusting groove to hold the adjusting clamp block, and then multiple adjusting clamps are adjusted to the same height through multiple sliding screws respectively, and the gear can be pressed from the top through the pulling force of the elastic telescopic rod.

[0006] Preferably, the anti-splash device includes a limit plate, a slide rail, and an arc baffle, the limit plate is fixedly connected to the top of the support plate, the slide rail is fixedly connected to both sides of the limit plate, and the arc baffle is slidably connected to the inner surface of the slide rail, and the anti-splash device also includes an inclined slot lifting piece, a transmission block, an L-shaped connecting plate, a transmission shaft, and an arc limit rod, the inclined slot lifting piece is fixedly connected to the bottom end of the arc baffle, the transmission block is fixedly connected to the bottom end of the sliding shaft, the L-shaped connecting plate is fixedly connected to the bottom surface of the transmission block, the transmission shaft is fixedly connected to one side of the L-shaped connecting plate, the arc limit rod is fixedly connected to both sides of the support plate, the arc baffle and the circumferential surface of the welding table are in contact with each other, the transmission shaft and the inner surface of the inclined slot lifting piece are slidably connected, and the arc limit rod and the arc baffle are away from the welding table. One side contacts each other, and the four arc-shaped baffles around the welding table are slid upward along the slide rail respectively. After the arc-shaped baffle moves to the top of the welding table, it can block the sparks and debris generated during welding. When the sliding shaft approaches the center of the welding table, it drives the L-shaped connecting plate and the transmission shaft to approach the center of the welding table through the transmission block, and the transmission shaft is then driven to move upward through the guide of the inclined groove opened in the inclined groove lifting member. The inclined groove lifting member moves upward to drive the arc-shaped baffle to slide upward in the slide rail. After the welding is completed, the positioning clamp releases the gear and moves to the outside of the welding table, and then drives the transmission block to move to the outside of the welding table through the guide block and the sliding shaft. The transmission block then drives the L-shaped connecting plate and the transmission shaft to move to the outside of the welding table. At this time, the inclined groove lifting member moves downward and drives the arc-shaped baffle to move downward to the bottom of the welding table.

[0007] Preferably, the waste chip collection device includes a connecting piece, an arc rod, and a scraper roller, the connecting piece is fixedly connected to a side of the limit plate close to the welding table, the arc rod is fixedly connected at both sides of the connecting piece, and the scraper roller is sleeved on the circumferential surface of the arc rod, and the waste chip collection device also includes an arc guide inclined plate, a connecting plate, an annular material accumulation plate, a material receiving bottom plate, and a fixed plate, the arc guide inclined plate is fixedly connected to both sides of the limit plate, the connecting plate is fixedly connected to a side of the support plate away from the welding table, the annular material accumulation plate is fixedly connected to a side of the connecting plate away from the support plate, the material receiving bottom plate is fixedly connected to the outer surface of the support plate, the fixed plate is fixedly connected to the circumferential surface of the material receiving bottom plate, and the annular material accumulation plate and the arc baffle are connected to each other on the side away from the welding table The scraper roller and the arc baffle plate are in contact with each other on one side close to the welding table, and the arc guide inclined plate and the slide rail are fixedly connected on one side close to the welding table. During the upward movement of the arc baffle plate, the side in contact with the welding table slides in contact with the scraper roller. At this time, friction is generated between the arc baffle plate and the scraper roller, so that the scraper roller rotates along the arc rod and scrapes off the waste chips adhering to the arc baffle plate. When the scraper roller rotates, it contacts the arc guide inclined plate, and the debris scraped off by the scraper roller slides into the annular material accumulation plate through the guidance of the arc guide inclined plate. When the arc baffle plate moves to the bottom of the welding table, the waste chips will be temporarily accumulated between the annular material accumulation plate and the arc baffle plate. When the arc baffle plate moves upward, the waste chips slide to the material receiving bottom plate to complete the collection.

[0008] The present invention adopts the above technical solution to bring the following beneficial effects:

[0009] 1. This positioning fixture is used for large gear welding. The four positioning clamps are close to the center of the welding table to clamp the gear, making clamping faster and more convenient, and improving processing efficiency. After the multiple adjustment clamps are adjusted to the same height through multiple sliding screws, the gear can be pressed from the top through the tension of the elastic telescopic rod, which improves the clamping stability and makes the gear welding more accurate.

[0010] 2. This is a large gear welding positioning fixture. After the arc baffle moves to the top of the welding table, it can block the sparks and debris generated during welding, preventing the sparks and debris from splashing and causing harm to the workers and polluting the environment, thereby improving the safety during welding. The inclined chute lifting piece moves downward and drives the arc baffle to move downward to the bottom of the welding table, making it easier for the workers to take out the welded gears, thereby improving the protection effect of the device and the ease of use of the device.

[0011] 3. This is a large gear welding positioning fixture. The scraper drum rotates along the arc rod and scrapes off the waste chips adhered to the arc baffle, avoiding excessive accumulation of waste chips on the arc baffle, which is difficult to clean and reduces the protection effect. At the same time, it can prevent the waste chips from falling from the arc baffle onto the internal parts of the device, causing troubles caused by the waste chips being absorbed by the gears during welding. When the arc baffle moves upward, the waste chips slide to the receiving bottom plate to complete the collection, which is convenient for the staff to quickly collect the waste chips for recycling and processing, and further avoids the waste chips from adhering to the internal parts of the device and affecting the welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional overall structure of the present invention;

[0013] Figure 2 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the present invention;

[0014] Figure 3 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the welding table of the present invention;

[0015] Figure 4 For the present invention Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0016] Figure 5 It is a schematic diagram of the front side stereoscopic structure of the positioning clamp of the present invention;

[0017] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of B;

[0018] Figure 7 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the anti-splash device of the present invention;

[0019] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of C in the middle;

[0020] Fig. 9 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the waste collection device of the present invention;

[0021] Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure of D in the figure.

[0022] In the figure: 1. support plate; 2. welding table; 3. double-acting linear motor; 4. connecting block; 5. guide rail; 51. guide block; 52. positioning clamp block; 53. sliding shaft; 54. slideway transmission member; 55. adjusting groove; 56. positioning groove; 57. elastic telescopic rod; 58. clamping block; 59. adjusting clamp block; 510. sliding screw; 511. positioning nut; 6. anti-splash device; 61. limit plate; 62. slide rail; 63. arc baffle plate; 64. inclined groove lifting member; 65. transmission block; 66. L-shaped connecting plate; 67. transmission shaft; 68. arc-shaped limit rod; 7. waste chip collection device; 71. connecting member; 72. arc rod; 73. scraper roller; 74. arc-shaped guide inclined plate; 75. connecting plate; 76. annular material accumulation plate; 77. material receiving bottom plate; 78. fixed plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 10, one embodiment of the present invention is: a large gear welding positioning fixture, comprising a support plate 1, the outer surface of the support plate 1 is fixedly connected with a welding table 2, the lower surface of the welding table 2 is fixedly connected with a connecting block 4, the lower surface of the connecting block 4 is fixedly connected with a double-motor linear motor 3, the upper surface of the welding table 2 is fixedly connected with a guide rail 5, the inner surface of the guide rail 5 is slidably connected with a guide block 51, the top of the guide block 51 is fixedly connected with a positioning clamping block 52, the bottom end of the guide block 51 is fixedly connected with a sliding shaft 53, the inner surface of the double-motor linear motor 3 is slidably connected with a slide transmission member 54, the positioning clamping block 52 is provided with an adjustment groove 55 on the side close to the double-motor linear motor 3, the side of the positioning clamping block 52 is provided with a positioning groove 56, the bottom surface of the inner wall of the adjusting groove 55 is fixedly connected with an elastic telescopic rod 57, the top of the elastic telescopic rod 57 is fixedly connected with a clamping block 58, and the clamping block 58 is fixedly connected with an adjustment clamping block 59 on the side close to the double-motor linear motor 3. A sliding screw 510 is slidably connected to the inner surface of the positioning groove 56, and a positioning nut 511 is threadedly connected to the circumferential surface of the sliding screw 510. The four positioning clamps 52 are close to the center of the welding table 2 to clamp the gear, making clamping faster and more convenient, thereby improving processing efficiency. A splash-proof device 6 is provided on the outer side of the welding table 2 to prevent sparks and debris from splashing around during welding. A waste collecting device 7 is provided below the welding table 2 to collect waste chips and prevent them from adhering to various parts of the device and being difficult to clean. The guide block 51 is slidably connected to the inner surface of the welding table 2, the positioning clamp 52 and the upper surface of the guide rail 5 are in contact with each other, the sliding shaft 53 and the inner surface of the slide groove transmission member 54 are slidably connected, the block 58 and the inner wall of the adjusting groove 55 are slidably connected, and after the multiple adjusting clamps 59 are adjusted to the same height by the multiple sliding screws 510, the gear can be pressed from the top by the pulling force of the elastic telescopic rod 57, thereby improving the clamping stability, thereby making the gear welding more accurate.

[0025] Working principle: Place the gear on the welding table 2, start the double-acting linear motor 3, and the double-acting linear motor 3 drives the two slide groove transmission members 54 to approach each other. The slide groove transmission member 54 drives the guide block 51 to slide in the guide rail 5 and approach the center of the welding table 2 through the sliding shaft 53. After being guided by the guide rail 5, the guide block 51 drives the sliding shaft 53 in the opposite direction to slide in the slide groove transmission member 54, so that the slide groove transmission member 54 can simultaneously drive the two guide blocks 51 to slide in the guide rail 5 through the sliding shaft 53. When the two slide groove transmission members 54 approach each other, they drive the four guide blocks 51 to drive the four positioning clamps 52 to approach the center of the welding table 2 and clamp the gear, making the clamping faster and more convenient, and improving the processing efficiency. The rate, the positioning clamp block 52 clamps the gear and then pulls the sliding screw 510 upwards, the sliding screw 510 contacts the block 58 and drives it to move upwards, the block 58 then drives the adjusting clamp block 59 to move upwards, so that the adjusting clamp block 59 can be adjusted to different heights according to the thickness of the gear, and then the positioning nut 511 is rotated, when the positioning nut 511 is rotated to conflict with the positioning clamp block 52, the sliding screw 510 can be stuck in the adjusting groove 55 to support the adjusting clamp block 59, and then the multiple adjusting clamp blocks 59 are adjusted to the same height through the multiple sliding screws 510 respectively, and the gear can be pressed from the top by the pulling force of the elastic telescopic rod 57, thereby improving the clamping stability, thereby making the gear welding more accurate.

[0026] See also Figure 1-Figure 10 On the basis of the above embodiment, in another embodiment of the present invention, the anti-splash device 6 includes a limit plate 61, a slide rail 62, and an arc-shaped baffle 63. The limit plate 61 is fixedly connected to the top of the support plate 1, and the slide rail 62 is fixedly connected to both sides of the limit plate 61. The arc-shaped baffle 63 is slidably connected to the inner surface of the slide rail 62. After the arc-shaped baffle 63 moves to the top of the welding table 2, it can block the sparks and debris generated during welding, preventing the sparks and debris from splashing and causing harm to the workers and polluting the environment, thereby improving the safety during welding. The anti-splash device 6 also includes an inclined slot lifting member 64, a transmission block 65, an L-shaped connecting plate 66, a transmission shaft 67, and an arc-shaped limit rod 68. The inclined slot lifting member 64 is fixed Connected to the bottom end of the arc baffle 63, the transmission block 65 is fixedly connected to the bottom end of the sliding shaft 53, the L-shaped connecting plate 66 is fixedly connected to the bottom surface of the transmission block 65, the transmission shaft 67 is fixedly connected to one side of the L-shaped connecting plate 66, the arc-shaped limit rod 68 is fixedly connected to both sides of the support plate 1, the arc-shaped baffle 63 and the circumferential surface of the welding table 2 are in contact with each other, the transmission shaft 67 and the inner surface of the inclined groove lifting member 64 are slidingly connected, the arc-shaped limit rod 68 and the side of the arc-shaped baffle 63 away from the welding table 2 are in contact with each other, the inclined groove lifting member 64 moves downward and drives the arc-shaped baffle 63 to move downward to the bottom of the welding table 2, which is convenient for the staff to take out the welded gears, which not only improves the protection effect of the device, but also improves the convenience of use of the device.

[0027] Working principle: The four arc-shaped baffles 63 around the welding table 2 are slid upward along the slide rails 62 respectively. After the arc-shaped baffles 63 move to the top of the welding table 2, they can block the sparks and debris generated during welding, preventing the sparks and debris from splashing and causing harm to the workers and polluting the environment, thereby improving the safety during welding. When the sliding shaft 53 approaches the center of the welding table 2, the transmission block 65 drives the L-shaped connecting plate 66 and the transmission shaft 67 to approach the center of the welding table 2. The transmission shaft 67 is then driven to move upward by the guide of the inclined slot opened in the inclined slot lifting member 64. The inclined slot lifting member 6 4 moves upward to drive the arc baffle 63 to slide upward in the slide rail 62. After welding is completed, the positioning clamp 52 releases the gear and moves to the outside of the welding table 2, and then drives the transmission block 65 to move to the outside of the welding table 2 through the guide block 51 and the sliding shaft 53. The transmission block 65 then drives the L-shaped connecting plate 66 and the transmission shaft 67 to move to the outside of the welding table 2. At this time, the inclined slot lifting member 64 moves downward and drives the arc baffle 63 to move downward to the bottom of the welding table 2, which is convenient for the staff to take out the welded gear, which not only improves the protection effect of the device, but also improves the convenience of use of the device.

[0028] See also Figure 1-Figure 10 On the basis of the above embodiment, in another embodiment of the present invention, the waste chip collecting device 7 includes a connecting member 71, an arc rod 72, and a wall scraping roller 73. The connecting member 71 is fixedly connected to one side of the limit plate 61 close to the welding table 2, and the arc rod 72 is fixedly connected to both sides of the connecting member 71. The wall scraping roller 73 is sleeved on the circumferential surface of the arc rod 72. The wall scraping roller 73 rotates along the arc rod 72 and scrapes off the waste chips adhering to the arc baffle 63 to avoid excessive accumulation of waste chips on the arc baffle 63, which is difficult to clean and leads to reduced protection effect. At the same time, it can prevent waste chips from falling from the arc baffle 63 onto the internal parts of the device, causing trouble caused by the waste chips being adsorbed by the gears during welding. The waste chip collecting device 7 also includes an arc guide inclined plate 74, a connecting plate 75, an annular material accumulation plate 76, a material receiving bottom plate 77, and a fixed plate 78. The arc The guide inclined plate 74 is fixedly connected to both sides of the limit plate 61, the connecting plate 75 is fixedly connected to the side of the support plate 1 away from the welding table 2, the annular material accumulation plate 76 is fixedly connected to the side of the connecting plate 75 away from the support plate 1, the material receiving bottom plate 77 is fixedly connected to the outer surface of the support plate 1, and the fixed plate 78 is fixedly connected to the circumferential surface of the material receiving bottom plate 77. The annular material accumulation plate 76 and the side of the arc baffle 63 away from the welding table 2 are in contact with each other, the scraper roller 73 and the side of the arc baffle 63 close to the welding table 2 are in contact with each other, the arc guide inclined plate 74 and the side of the slide rail 62 close to the welding table 2 are fixedly connected, and when the arc baffle 63 moves upward, the waste chips slide to the material receiving bottom plate 77 to complete the collection, which is convenient for the staff to quickly collect the waste chips for recycling and processing, and at the same time further avoids the waste chips adhering to the internal parts of the device and affecting the welding.

[0029] Working principle: When the arc baffle 63 moves upward, the side thereof in contact with the welding table 2 slides in contact with the scraper roller 73. At this time, friction is generated between the arc baffle 63 and the scraper roller 73, so that the scraper roller 73 rotates along the arc rod 72 and scrapes off the waste chips adhering to the arc baffle 63, thereby preventing the waste chips from accumulating too much on the arc baffle 63 and making it difficult to clean up, thereby reducing the protective effect. At the same time, it can prevent the waste chips from falling from the arc baffle 63 onto the internal parts of the device, thereby causing troubles caused by the waste chips being adsorbed by the gears during welding. The scraper roller When 73 rotates, it contacts the arc-shaped guide inclined plate 74, and the debris scraped off by the scraper roller 73 slides into the annular material accumulation plate 76 through the guidance of the arc-shaped guide inclined plate 74. When the arc-shaped baffle plate 63 moves to the bottom of the welding table 2, the waste chips will temporarily accumulate between the annular material accumulation plate 76 and the arc-shaped baffle plate 63. When the arc-shaped baffle plate 63 moves upward, the waste chips slide to the material receiving bottom plate 77 to complete the collection, so that the staff can quickly collect the waste chips for recycling and processing, and further avoid the waste chips adhering to the internal parts of the device and affecting the welding.

[0030] The present invention provides a large gear welding positioning fixture. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A large gear welding positioning fixture, comprising a support plate (1), characterized in that: The outer surface of the support plate (1) is fixedly connected to a welding table (2), the lower surface of the welding table (2) is fixedly connected to a connecting block (4), the lower surface of the connecting block (4) is fixedly connected to a double-motor linear motor (3), the upper surface of the welding table (2) is fixedly connected to a guide rail (5), the inner surface of the guide rail (5) is slidably connected to a guide block (51), the top end of the guide block (51) is fixedly connected to a positioning clamping block (52), the bottom end of the guide block (51) is fixedly connected to a sliding shaft (53), the inner surface of the double-motor linear motor (3) is slidably connected to a slide groove transmission member (54), The positioning clamp (52) is provided with an adjustment groove (55) on a side close to the double-motor linear motor (3), and a positioning groove (56) is provided on a side of the positioning clamp (52). An elastic telescopic rod (57) is fixedly connected to the bottom surface of the inner wall of the adjustment groove (55), a clamping block (58) is fixedly connected to the top of the elastic telescopic rod (57), and an adjustment clamp (59) is fixedly connected to the side of the clamping block (58) close to the double-motor linear motor (3). A sliding screw (510) is slidably connected to the inner surface of the positioning groove (56), and a positioning nut (511) is threadedly connected to the circumferential surface of the sliding screw (510); An anti-splash device (6) is provided on the outside of the welding table (2) for preventing sparks and debris from splashing around during welding, and a waste collecting device (7) is provided below the welding table (2) for collecting waste debris to prevent the waste debris from adhering to various parts of the device and being difficult to clean; The guide block (51) is slidably connected to the inner surface of the welding table (2), the positioning clamp block (52) and the upper surface of the guide rail (5) are in contact with each other, the sliding shaft (53) and the inner surface of the slide groove transmission member (54) are slidably connected, and the clamp block (58) and the inner wall of the adjustment groove (55) are slidably connected; The anti-splash device (6) comprises a limit plate (61), a slide rail (62), and an arc-shaped baffle plate (63), wherein the limit plate (61) is fixedly connected to the top of the support plate (1), the slide rail (62) is fixedly connected to both sides of the limit plate (61), and the arc-shaped baffle plate (63) is slidably connected to the inner surface of the slide rail (62); The anti-splash device (6) further comprises an inclined slot lifting member (64), a transmission block (65), an L-shaped connecting plate (66), a transmission shaft (67), and an arc-shaped limiting rod (68); the inclined slot lifting member (64) is fixedly connected to the bottom end of the arc-shaped baffle plate (63); the transmission block (65) is fixedly connected to the bottom end of the sliding shaft (53); the L-shaped connecting plate (66) is fixedly connected to the bottom surface of the transmission block (65); the transmission shaft (67) is fixedly connected to one side of the L-shaped connecting plate (66); and the arc-shaped limiting rod (68) is fixedly connected to both sides of the support plate (1).

2. The large gear welding positioning fixture according to claim 1 is characterized in that: The arc-shaped baffle plate (63) and the circumferential surface of the welding platform (2) are in contact with each other, the transmission shaft (67) and the inner surface of the inclined slot lifting member (64) are slidably connected, and the arc-shaped limiting rod (68) and the side of the arc-shaped baffle plate (63) away from the welding platform (2) are in contact with each other.

3. The large gear welding positioning fixture according to claim 1 is characterized in that: The waste chip collecting device (7) comprises a connecting member (71), an arc-shaped rod (72), and a wall scraping roller (73); the connecting member (71) is fixedly connected to a side of the limiting plate (61) close to the welding table (2); the arc-shaped rod (72) is fixedly connected to two sides of the connecting member (71); and the wall scraping roller (73) is sleeved on the circumferential surface of the arc-shaped rod (72).

4. The large gear welding positioning fixture according to claim 3 is characterized in that: The waste chip collecting device (7) further comprises an arc-shaped guide inclined plate (74), a connecting plate (75), an annular material accumulation plate (76), a material receiving bottom plate (77), and a fixed plate (78); the arc-shaped guide inclined plate (74) is fixedly connected to both sides of the limiting plate (61); the connecting plate (75) is fixedly connected to a side of the support plate (1) away from the welding table (2); the annular material accumulation plate (76) is fixedly connected to a side of the connecting plate (75) away from the support plate (1); the material receiving bottom plate (77) is fixedly connected to the outer surface of the support plate (1); and the fixed plate (78) is fixedly connected to the circumferential surface of the material receiving bottom plate (77).

5. The large gear welding positioning fixture according to claim 4 is characterized in that: The annular material accumulation plate (76) and the arc-shaped baffle plate (63) are in contact with each other at a side away from the welding table (2), the wall scraping roller (73) and the arc-shaped baffle plate (63) are in contact with each other at a side close to the welding table (2), and the arc-shaped guide inclined plate (74) and the slide rail (62) are fixedly connected at a side close to the welding table (2).

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