Special-shaped welded pipe mold polishing device

By designing an angle-adjustable grinding wheel and clamping system, the problem of difficulty in adjusting the grinding wheel angle and debris cleaning of traditional grinding machines is solved, and efficient grinding and debris treatment of special-shaped tube molds is achieved, improving grinding effect and production efficiency .

CN222327697UActive Publication Date: 2025-01-10GANSU SHUANGRUI PIPE MANUFACTURING CO LTD
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Patent Information

Application Number
CN202421096641.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-20
Publication Date
2025-01-10
Estimated Expiration
2034-05-20

AI Technical Summary

Technical Problem

It is difficult for traditional grinders to adjust the angle of the grinding wheel according to the concave and convex surfaces of the special-shaped tube mold, resulting in some positions being unable to be polished, and a large amount of debris is generated during the grinding process, making it difficult to clean.

Method used

A special-shaped welded pipe mold grinding device is designed, including a workbench, translational assembly, rotating assembly, hydraulic cylinder, servo motor and clamping system. Through the cooperation of hydraulic cylinder and servo motor, multi-angle adjustment and clamping of the grinding wheel are realized. The cooperation between the dust collecting tank and the vacuum suction tube enables the collection and cleaning of debris.

Benefits of technology

Multi-angle grinding of irregular faces of special-shaped tube molds is realized, which improves the scope of application of the grinding wheel, and effectively collects and processes debris generated during the grinding process, improving the fineness and production efficiency of the finished product.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model relates to the technical field of pipe fitting polishing, in particular to a special-shaped welded pipe mold polishing device which comprises a workbench, extension bases are fixedly connected to the two sides of the workbench, annular square bases are connected to the outer walls of the extension bases in a sleeved mode, and hydraulic cylinders are fixedly connected to the top faces of the annular square bases. And translation assemblies are arranged at the driving ends of the two hydraulic cylinders correspondingly, rotating assemblies are arranged at the bottoms of the translation assemblies, inwards-concave connecting bases are arranged on the bottom faces of the rotating assemblies, and arc-shaped blocks are arranged in the middles of the inwards-concave connecting bases. According to the pipe fitting multi-angle polishing device, through the cooperative arrangement of the workbench, the translation assembly, the rotating assembly, the inner concave connecting base, the switching shell, an arc-shaped block, a circular groove, a second servo motor, a connecting rod, a polishing wheel, an inner gear ring, a clamping tooth block, an extension shell, a limiting block, a pressing block, a limiting groove and a spring, the effect of multi-angle polishing according to the shape of a pipe fitting is achieved; and therefore, the application range of the polishing wheel is well widened.
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Description

Technical Field

[0001] The utility model relates to the technical field of pipe grinding, in particular to a special-shaped welded pipe mold grinding device. Background Art

[0002] The full name of electric grinder is reciprocating electric polishing grinder (also known as filing machine). It is widely used in finishing and surface polishing in the mold industry. It is a substitute for similar pneumatic products. When producing special-shaped tubes, different concave and convex molds are required for plasticity. The ends and surfaces of concave and convex molds are prone to unevenness during the production process, and processing and grinding are required to make the end faces smooth.

[0003] However, when grinding special-shaped pipe molds, due to the different structural characteristics of the concave and convex surfaces, traditional grinders are mostly fixed-position grinding wheels, and the angle position of the grinding wheel cannot be adjusted according to the concave and convex surfaces of the mold. It may happen that some parts of the mold cannot be ground, making the finished product less refined. In addition, a large amount of debris is easily generated during the grinding process, and the debris is more troublesome to clean up. Therefore, in response to the above problems, we provide a new type of special-shaped welded pipe mold grinding device. Utility Model Content

[0004] The utility model aims to provide a grinding device for a special-shaped welded pipe mold to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A grinding device for a special-shaped welded pipe mold comprises a workbench, both sides of the workbench are fixedly connected with an extension seat, the outer wall of the extension seat is sleeved with an annular square seat, the top surface of the annular square seat is fixedly connected with a hydraulic cylinder, the driving ends of the two hydraulic cylinders are provided with a translation assembly, the bottom of the translation assembly is provided with a rotating assembly, the bottom surface of the rotating assembly is provided with an inner concave seat, the middle part of the inner concave seat is provided with an arc block, the interior of the arc block is fixedly connected with servo motor 2, the driving end of the servo motor 2 is fixedly connected with connecting rod 2, the bottom end of the connecting rod 2 is fixedly connected with a grinding wheel, both sides of the arc block are fixedly connected with an adapter shell, the outer wall of the adapter shell is rotatably connected to the inner side surface of the inner concave seat, and the inner side surface of one of the adapter shells is provided with two limit grooves.

[0007] Further, a circular groove is provided on one side of the concave socket. One side of the inner wall of the circular groove is fixedly connected with an internal gear ring. A toothed block is slidably inserted into the interior of the internal gear ring. One side of the toothed block is fixedly connected with a pressing block. The other side of the toothed block is fixedly connected with an extension shell. Limiting blocks are fixedly connected to the outer wall of the extension shell corresponding to two limiting grooves. Springs are arranged inside both the extension shell and the adapter shell. One end of the spring is connected to the outer wall of the toothed block, and the other end of the spring is connected to the outer wall of the arc-shaped block.

[0008] Further, the translation assembly includes a receiving long block. The bottom surface of the receiving long block is fixedly connected to the driving end of the hydraulic cylinder. A sliding groove is arranged inside the translation assembly. A special-shaped connecting block is slidably connected inside the sliding groove. A groove is arranged in the middle of the top surface of the special-shaped connecting block. A rack is fixedly connected to the bottom surface of the groove. A first connecting rod is rotatably connected to the middle inner side surface of the receiving long block. A gear is fixedly connected to the middle side of the outer wall of the first connecting rod. The bottom outer wall of the gear is meshed with a section of the rack. A machine shell is fixedly connected to one side outer wall of the receiving long block. A first servo motor is fixedly connected inside the machine shell. The driving end of the first servo motor is fixedly connected to one end of the first connecting rod. A receiving turntable is rotatably connected to the middle side inside the special-shaped connecting block.

[0009] Further, the rotation assembly includes a circular seat. The top surface of the circular seat is fixedly connected to the top surface of the special-shaped connecting block. A central connecting rod is rotatably connected to the bottom surface inside the circular seat. The bottom end of the central connecting rod is fixedly connected to the top surface of the concave socket through a turntable. The top end of the central connecting rod penetrates through the circular seat and is fixedly connected to the bottom surface of the receiving turntable. A worm gear is fixedly connected to the outer wall of the central connecting rod. A worm is meshed with one side outer wall of the worm gear. An L-shaped block is fixedly connected to one side inside the circular seat. A small motor is fixedly connected to the top surface of the L-shaped block. The driving end of the small motor is fixedly connected to the middle of the worm through a rotating shaft. One end of the worm away from the small motor is rotatably connected to the inner side surface of the L-shaped block through a rotating shaft.

[0010] Further, linear guide rails are fixedly connected to the inner sides of the top surfaces of the two extension seats. A guide rail slider is arranged inside the linear guide rails. The top surface of the guide rail slider is fixedly connected to the inner side surface of the annular square seat.

[0011] Furthermore, two sides of the top surface of the workbench are rotatably connected with bidirectional screw rods, one end of the two bidirectional screw rods is fixedly connected with a pulley, and the two pulleys are connected by belts. A servo motor three is fixedly connected to the inner side of the top surface of the workbench, and the driving end of the servo motor three is fixedly connected to the inner middle side of one of the pulleys through a rotating shaft. Both sides of the outer walls of the two bidirectional screw rods are threadedly connected with movable blocks, and the top surfaces of the movable blocks are fixedly connected with L-shaped connecting blocks, the top surface of the L-shaped connecting block is rotatably connected with a screw rod, and the outer wall of the screw rod is threadedly connected with a guide block, and the adjacent ends of the two adjacent L-shaped connecting blocks and the guide block are fixedly connected with a clamping block.

[0012] Furthermore, a dust collecting groove is provided on the middle side of the top surface of the workbench, a dust suction pipe is fixedly connected to the bottom of the inner side surface of the dust collecting groove, and a dust suction box is provided at one end of the dust suction pipe away from the workbench.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, through the coordinated arrangement of a workbench, a translation component, a rotation component, a concave connection seat, an adapter shell, an arc block, a circular groove, a servo motor 2, a connecting rod, a grinding wheel, an inner gear ring, a tooth block, an extension shell, a limit block, a pressing block, a limit groove and a spring, the function of multi-angle grinding according to the shape of the pipe fitting is realized, so that the grinding wheel can grind the irregular parts of the special-shaped pipe mold, and the design of the overall structure is convenient for adjusting the inclination angle of the grinding wheel, thereby better improving the application range of the grinding wheel, and having a certain practical effect.

[0015] 2. In the utility model, the pipe fittings or pipe fitting molds to be polished are clamped by the cooperation of the L-shaped connecting block, the screw rod, the guide block and the clamping block, and the clamping block can be adjusted according to the length of the clamped pipe fittings by using the setting of the two-way screw rod, the pulley, the belt, the servo motor and the movable block. The debris generated during the polishing process can be collected and processed by the coordinated setting of the workbench, the dust collecting trough, the dust collecting pipe and the dust collecting box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a special-shaped welded pipe mold grinding device proposed by the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of a workbench of a special-shaped welded pipe mold grinding device proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the position of the movable blocks of a special-shaped welded pipe mold grinding device proposed by the utility model;

[0019] Figure 4It is a schematic structural diagram of a translation component of a grinding device for a special-shaped welded pipe mold proposed by the present utility model;

[0020] Figure 5 It is a schematic cross-sectional view of an inner concave socket of a grinding device for a special-shaped welded pipe mold proposed by the present utility model;

[0021] Figure 6 It is a schematic position diagram of a limit block of a grinding device for a special-shaped welded pipe mold proposed by the present utility model;

[0022] Figure 7 For Figure 5 The enlarged view of part A in

[0023] Legend:

[0024] 1. Workbench; 2. Outer extension seat; 3. Ring-shaped square seat; 4. Hydraulic cylinder; 5. Translation component; 51.承接 long block; 52. Special-shaped connection block; 53. Groove; 54. Rack; 55. Connecting rod one; 56. Gear; 57. Machine shell; 58. Servo motor one; 59.承接 turntable; 6. Rotation component; 61. Circular seat; 62. Central connecting rod; 63. Worm gear; 64. Worm; 65. C-shaped block; 66. Small motor; 7. Inner concave socket; 8. Adapter shell; 9. Arc-shaped block; 10. Circular groove; 11. Servo motor two; 12. Connecting rod two; 13. Grinding wheel; 14. Inner gear ring; 15. Tooth-locking block; 16. Extension shell; 17. Limit block; 18. Pressing block; 19. Limit groove; 20. Spring; 21. Linear guide rail; 22. Guide rail slider; 23. Bidirectional lead screw; 24. Pulley; 25. Servo motor three; 26. Movable block; 27. L-shaped connection block; 28. Screw; 29. Guide block; 30. Clamping block; 31. Dust collection groove; 32. Dust suction pipe; 33. Dust suction box. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1 to 7In the embodiment of the utility model, a special-shaped welding pipe mold grinding device includes a workbench 1, a dust collecting groove 31 is opened on the middle side of the top surface of the workbench 1, a dust collecting pipe 32 is fixedly connected to the bottom of the inner side of the dust collecting groove 31, and a dust collecting box 33 is arranged at the end of the dust collecting pipe 32 away from the workbench 1, and an extension seat 2 is fixedly connected to both sides of the workbench 1, and an annular square seat 3 is sleeved on the outer wall of the extension seat 2, and a hydraulic cylinder 4 is fixedly connected to the top surface of the annular square seat 3, and the driving ends of the two hydraulic cylinders 4 are provided with translation components 5, and a rotating component 6 is provided at the bottom of the translation component 5, and an inner concave seat 7 is provided on the bottom surface of the rotating component 6, and an arc block 9 is provided in the middle of the inner concave seat 7, and a servo motor 11 is fixedly connected to the inside of the arc block 9, and a connecting rod 12 is fixedly connected to the driving end of the servo motor 11, and a connecting rod 12 is connected to the driving end of the servo motor 11. The bottom end of the second rod 12 is fixedly connected with a grinding wheel 13, and both sides of the arc block 9 are fixedly connected with an adapter shell 8. The outer wall of the adapter shell 8 is rotatably connected to the inner side surface of the inner recessed seat 7. The inner side surface of an adapter shell 8 is provided with two limit grooves 19, and a circular groove 10 is provided on one side of the inner wall of the circular groove 10. An inner gear ring 14 is fixedly connected to one side of the inner wall, and a tooth block 15 is slidably inserted inside the inner gear ring 14. A pressing block 18 is fixedly connected to one side of the tooth block 15, and an extension shell 16 is fixedly connected to the other side of the tooth block 15. The outer wall of the extension shell 16 is fixedly connected to the limit block 17 corresponding to the two limit grooves 19. A spring 20 is provided inside the extension shell 16 and the adapter shell 8, and one end of the spring 20 is connected to the outer wall of the tooth block 15, and the other end of the spring 20 is connected to the outer wall of the arc block 9.

[0027] During specific implementation, the grinding wheel 13 is adjusted to move up and down by setting the hydraulic cylinder 4, and is adjusted according to the shape of the special-shaped pipe fittings to be ground. The tooth block 15 is pressed into the circular groove 10 by pressing the pressing block 18, so that the tooth block 15 is free from the restriction of the inner gear ring 14, and then the grinding wheel 13 is moved. The grinding wheel drives the arc block 9 to adjust the angle through the adapter shell 8. During the adjustment process, the pressed tooth block 15 is adjusted to rotate with the arc block 9 through the cooperation of the limit groove 19 provided in the adapter shell 8 and the limit block 17 provided on the outer wall of the extension shell 16. When it is adjusted to the appropriate position, , release the pressing block 18, and the tooth block 15 is snapped back into the matching inner tooth ring 14 under the action of the spring 20, thereby limiting the arc block 9 with the adjusted angle, so that the grinding wheel 13 can adjust the position stably, so that the grinding wheel can grind the irregular parts of the special-shaped tube mold. The design of the overall structure is convenient for adjusting the inclination angle of the grinding wheel, thereby better improving the application range of the grinding wheel, and has certain practical effects. The dust collecting groove 31 provided on the workbench 1 is used to collect the debris generated during the grinding process, and then cooperates with the dust suction pipe 32 and the dust suction box 33 to clean the debris accumulated in the dust collecting groove 31, which is convenient for subsequent processing.

[0028] Embodiment 1

[0029] As Figure 1 、 4 shown, in this embodiment, the translation component 5 includes a receiving long block 51. The bottom surface of the receiving long block 51 is fixedly connected to the driving end of the hydraulic cylinder 4. A chute is provided inside the translation component 5. An irregular connecting block 52 is slidably connected inside the chute. A groove 53 is provided in the middle of the top surface of the irregular connecting block 52. A rack 54 is fixedly connected to the bottom surface of the groove 53. A first connecting rod 55 is rotatably connected to the middle inner side surface of the receiving long block 51. A gear 56 is fixedly connected to the middle side of the outer wall of the first connecting rod 55. The bottom outer wall of the gear 56 is meshed with a section of the rack 54. A machine shell 57 is fixedly connected to one outer wall of the receiving long block 51. A first servo motor 58 is fixedly connected inside the machine shell 57. The driving end of the first servo motor 58 is fixedly connected to one end of the first connecting rod 55. A receiving turntable 59 is rotatably connected to the middle side inside the irregular connecting block 52.

[0030] During specific implementation, start the provided first servo motor 58. Use the first servo motor 58 to drive the gear 56 to rotate through the first connecting rod 55. Through the cooperation of the gear 56 and the rack 54 in the groove 53 of the irregular connecting block 52, the irregular connecting block 52 can translate left and right in the chute provided in the receiving long block 51. By means of the arrangement of the irregular connecting block 52 through the rotating component 6 and the concave receiving seat 7, the provided grinding wheel 13 is driven to translate left and right, so as to better adjust according to the parts of the pipe fittings to be ground as required.

[0031] As Figure 5 、 7 shown, in this embodiment, the rotating component 6 includes a circular seat 61. The top surface of the circular seat 61 is fixedly connected to the top surface of the irregular connecting block 52. A central connecting rod 62 is rotatably connected to the bottom surface inside the circular seat 61. The bottom end of the central connecting rod 62 is fixedly connected to the top surface of the concave receiving seat 7 through a turntable. The top end of the central connecting rod 62 penetrates through the circular seat 61 and is fixedly connected to the bottom surface of the receiving turntable 59. A worm gear 63 is fixedly connected to the outer wall of the central connecting rod 62. A worm 64 is meshed with one outer wall of the worm gear 63. An L-shaped block 65 is fixedly connected to one side inside the circular seat 61. A small motor 66 is fixedly connected to the top surface of the L-shaped block 65. The driving end of the small motor 66 is fixedly connected to the middle of the worm 64 through a rotating shaft. The end of the worm 64 away from the small motor 66 is rotatably connected to the inner side surface of the L-shaped block 65 through a rotating shaft.

[0032] During specific implementation, the small motor 66 is started, and the worm 64 is driven to rotate through the rotating shaft by the small motor 66. The rotation of the worm 64 drives the rotation of the worm wheel 63. When the worm wheel 63 rotates, the bottom of the center connecting rod 62 is driven to rotate through the concave connecting seat 7 connected to the turntable, thereby further expanding the adjustment range of the grinding wheel 13, so that it is more suitable for grinding the uneven positions of special-shaped pipe fittings.

[0033] Embodiment 2

[0034] like Figure 1 , 2 As shown, in this embodiment, a linear guide rail 21 is fixedly connected to the inner side of the top surface of the two extension seats 2, and a guide rail slider 22 is arranged inside the linear guide rail 21, and the top surface of the guide rail slider 22 is fixedly connected to the inner side surface of the annular square seat 3.

[0035] During specific implementation, the linear guide rail 21 and the guide rail slider 22 cooperate to drive the connected annular square seat 3 to automatically move forward and backward on the extension seat 2, so that the translation assembly 5, the rotation assembly 6 and the recessed seat 7 connected by the hydraulic cylinder 4 above the annular square seat 3 move as a whole, so that the provided grinding wheel 13 can move forward and backward as needed.

[0036] like Figure 2 , 3 As shown, in this embodiment, two sides of the top surface of the workbench 1 are rotatably connected with bidirectional screw rods 23, one end of the two bidirectional screw rods 23 is fixedly connected with a pulley 24, and the two pulleys 24 are connected by belts. A servo motor three 25 is fixedly connected to the inner side of the top surface of the workbench 1, and the driving end of the servo motor three 25 is fixedly connected to the inner middle side of a pulley 24 through a rotating shaft. Both sides of the outer walls of the two bidirectional screw rods 23 are threadedly connected with movable blocks 26, and the top surfaces of the movable blocks 26 are fixedly connected with L-shaped connecting blocks 27. The top surface of the L-shaped connecting block 27 is rotatably connected with a screw rod 28, and the outer wall of the screw rod 28 is threadedly connected with a guide block 29, and the adjacent ends of the two adjacent L-shaped connecting blocks 27 and the guide block 29 are fixedly connected with a clamping block 30.

[0037] During specific implementation, a servo motor 3 25 is started, and a pulley 24 connected thereto is driven to rotate via a rotating shaft by the servo motor 3 25, and another pulley 24 is driven to operate through the arrangement of one pulley 24 and a belt, so that the bidirectional screw rod 23 fixedly connected with the two pulleys 24 operates, so that the movable block 26 on the bidirectional screw rod 23 can move, and the L-shaped connecting block 27 connected thereto is driven to follow the movement through the movable block 26, so that the clamping block 30 provided on the L-shaped connecting block 27 can be adjusted to a certain extent according to the length of the clamped pipe fitting, and the screw rod 28 and the guide block 29 provided can clamp the special-shaped pipe fitting that needs to be polished, and a handle for easy twisting is provided above the screw rod 28, and a plurality of protective strips are provided on the clamping surface of the clamping block 30.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A grinding device for a special-shaped welded pipe mold, comprising a workbench (1), characterized in that: Both sides of the workbench (1) are fixedly connected with an extension seat (2), the outer wall of the extension seat (2) is sleeved with an annular square seat (3), the top surface of the annular square seat (3) is fixedly connected with a hydraulic cylinder (4), the driving ends of the two hydraulic cylinders (4) are provided with a translation assembly (5), the bottom of the translation assembly (5) is provided with a rotating assembly (6), the bottom surface of the rotating assembly (6) is provided with an inner concave seat (7), and the middle part of the inner concave seat (7) is provided with an arc block (9) The arc block (9) is fixedly connected to a servo motor 2 (11) inside, the driving end of the servo motor 2 (11) is fixedly connected to a connecting rod 2 (12), the bottom end of the connecting rod 2 (12) is fixedly connected to a grinding wheel (13), both sides of the arc block (9) are fixedly connected to an adapter shell (8), the outer wall of the adapter shell (8) is rotatably connected to the inner side surface of the inner recessed seat (7), and the inner side surface of one of the adapter shells (8) is provided with two limit grooves (19).

2. The grinding device for a special-shaped welded pipe mold according to claim 1, characterized in that: A circular groove (10) is provided on one side of the inner recessed seat (7), an inner tooth ring (14) is fixedly connected to one side of the inner wall of the circular groove (10), a tooth block (15) is slidably inserted inside the inner tooth ring (14), a pressing block (18) is fixedly connected to one side of the tooth block (15), an extension shell (16) is fixedly connected to the other side of the tooth block (15), the outer wall of the extension shell (16) corresponds to two limit grooves (19) and is fixedly connected to the limit block (17), a spring (20) is provided inside the extension shell (16) and the adapter shell (8), one end of the spring (20) is connected to the outer wall of the tooth block (15), and the other end of the spring (20) is connected to the outer wall of the arc block (9).

3. The grinding device for a special-shaped welded pipe mold according to claim 1, characterized in that: The translation assembly (5) comprises a receiving long block (51), the bottom surface of the receiving long block (51) is fixedly connected to the driving end of the hydraulic cylinder (4), a slide groove is arranged inside the translation assembly (5), a special-shaped connecting block (52) is slidably connected inside the slide groove, a groove (53) is arranged in the middle of the top surface of the special-shaped connecting block (52), a rack (54) is fixedly connected to the bottom surface of the groove (53), a connecting rod (55) is rotatably connected to the inner side surface of the middle part of the receiving long block (51), and the connecting rod (55) is rotatably connected to the inner side surface of the middle part of the receiving long block (51), and the connecting rod (55) is rotatably connected to the inner side surface of the receiving long block (51). A gear (56) is fixedly connected to the middle side of the outer wall of the connecting rod (55); the bottom outer wall of the gear (56) is meshingly connected to a section of the rack (54); one side outer wall of the receiving long block (51) is fixedly connected to a housing (57); a servo motor (58) is fixedly connected inside the housing (57); a driving end of the servo motor (58) is fixedly connected to one end of the connecting rod (55); and a receiving turntable (59) is rotatably connected to the middle side of the interior of the special-shaped connecting block (52).

4. The grinding device for a special-shaped welded pipe mold according to claim 3 is characterized in that: The rotating assembly (6) includes a circular seat (61), the top surface of the circular seat (61) is fixedly connected to the top surface of the special-shaped connecting block (52), a central connecting rod (62) is rotatably connected to the inner bottom surface of the circular seat (61), the bottom end of the central connecting rod (62) is fixedly connected to the top surface of the concave connecting seat (7) through a turntable, the top end of the central connecting rod (62) penetrates through the circular seat (61) and is fixedly connected to the bottom surface of the承接转盘(59), a worm gear (63) is fixedly connected to the outer wall of the central connecting rod (62), a worm (64) is meshed with the outer wall of one side of the worm gear (63), an L-shaped block (65) is fixedly connected to one side inside the circular seat (61), a small motor (66) is fixedly connected to the top surface of the L-shaped block (65), the driving end of the small motor (66) is fixedly connected to the middle part of the worm (64) through a rotating shaft, and the end of the worm (64) far from the small motor (66) is rotatably connected to the inner side surface of the L-shaped block (65) through a rotating shaft.

5. The grinding device for a special-shaped welded pipe mold according to claim 1, characterized in that: Linear guide rails (21) are fixedly connected to the inner sides of the top surfaces of the two extension seats (2), a guide rail slider (22) is arranged inside the linear guide rails (21), and the top surface of the guide rail slider (22) is fixedly connected to the inner side surface of the annular square seat (3).

6. The grinding device for a special-shaped welded pipe mold according to claim 1, characterized in that: Two-way lead screws (23) are rotatably connected to both sides of the top surface of the workbench (1), one ends of the two two-way lead screws (23) are fixedly connected with belt pulleys (24), the two belt pulleys (24) are connected by a belt, a servo motor three (25) is fixedly connected to the inner side of the top surface of the workbench (1), the driving end of the servo motor three (25) is fixedly connected to the middle side inside one of the belt pulleys (24) through a rotating shaft, movable blocks (26) are threadedly connected to both sides of the outer walls of the two two-way lead screws (23), L-shaped connecting blocks (27) are fixedly connected to the top surfaces of the movable blocks (26), a screw rod (28) is rotatably connected to the top surfaces of the L-shaped connecting blocks (27), a guide block (29) is threadedly connected to the outer wall of the screw rod (28), and clamping blocks (30) are fixedly connected to the adjacent ends of the two L-shaped connecting blocks (27) and the guide block (29).

7. The grinding device for a special-shaped welded pipe mold according to claim 1, characterized in that: A dust collection groove (31) is formed in the middle side of the top surface of the workbench (1), a dust suction pipe (32) is fixedly connected to the bottom of the inner side surface of the dust collection groove (31), and a dust suction box (33) is arranged at the end of the dust suction pipe (32) far from the workbench (1).