Split block assembly for tube bender

Abstract

This utility model discloses a split-type rotating block assembly for a pipe bending machine, comprising: a guide mold assembly, including a guide mold groove and a translation unit; a rotating assembly and a rotating seat; a wheel mold assembly, including a lifting unit and a wheel mold seat, the wheel mold seat having a wheel groove; and a clamping mold assembly, including a moving unit and a clamping groove; the inner wall cross-section of the clamping groove and the wheel groove are both semi-circular with an inner diameter consistent with the inner diameter of the guide mold groove, and the clamping groove and the wheel groove are used to combine to form a clamping mold channel; a locking element is provided above and / or below the guide mold groove, the locking element abutting against the wheel mold to lock the height of the wheel mold seat. This split-type rotating block assembly for a pipe bending machine reduces the height position of the wheel groove through the locking element on the guide mold groove, so that during the rotation of the rotating assembly driving the rotating seat, the height positions of the wheel groove and the clamping groove are fixed, avoiding positional shift in the height direction, ensuring bending accuracy, improving product quality, thereby ensuring yield and production efficiency, and avoiding material waste.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending technology, and in particular to a split-type rotating block assembly for a pipe bending machine. Background Technology

[0002] Bending pipe fittings have wide applications in mechanical engineering, light industry, construction, shipbuilding, and aerospace due to their advantages such as lightweight, high strength, and low material consumption. In recent years, with continuous technological development, various industries have increasingly higher requirements for the quality of pipe bending and forming.

[0003] In the prior art, such as the Chinese utility model patent with announcement number CN202291037U, a steel pipe bending mold is disclosed, including a guide mold part, a clamping mold part and a wheel mold. The steel pipe bending mold adopts a split combination structure, and each part of the mold is a split and detachable structure, which reduces the processing and manufacturing difficulty of the steel pipe bending mold, facilitates later maintenance, and reduces the mold repair cost.

[0004] However, because the various parts of the above mold adopt a split structure, the assembly accuracy between the casting part, clamping part and wheel mold is reduced. Especially during the pipe bending process, after being subjected to the reverse force of the pipe, the height position of the wheel mold seat deviates, which reduces the bending accuracy, affects the bending quality of the pipe, and in severe cases increases the defect rate, resulting in material waste and reduced production efficiency.

[0005] Therefore, it is necessary to improve the existing split-type pipe bending device. Utility Model Content

[0006] The purpose of this utility model is to overcome the defects in the existing technology and provide a split-type rotating block assembly for a pipe bending machine that improves bending forming quality, ensures yield and production efficiency, and reduces defect rate.

[0007] To achieve the above-mentioned technical effects, the technical solution of this utility model is: a split-type rotating block assembly for a pipe bending machine, comprising: The mold guide assembly includes a mold guide groove extending in a horizontal direction and a translation unit that drives the mold guide groove to move along its own length direction. The mold guide groove is a through groove with its opening facing horizontally and its inner wall cross-section being semi-circular. A rotating assembly and a rotating base, wherein the rotating assembly drives the rotating base to rotate and the rotation axis extends in a vertical direction; The wheel mold assembly includes a lifting unit disposed on the rotating base and a wheel mold base disposed at the output end of the lifting unit, wherein the wheel mold base is provided with a horizontal wheel groove; The clamping assembly includes a moving unit disposed on the rotating base and a clamping groove disposed at the output end of the translation unit, wherein the moving direction of the clamping groove is horizontal and perpendicular to the length direction of the guide groove; The inner wall cross-sections of the clamping groove and the wheel groove are both semicircles with the same inner diameter as the inner diameter of the guide mold groove. The clamping groove and the wheel groove are used to combine to form a clamping mold channel. The moving path of the clamping mold channel includes the clamping position. In the clamping position, the clamping mold channel and the guide mold groove are coaxial and the groove openings of the clamping groove and the guide mold groove face the same direction. A locking element is provided above and / or below the guide mold groove, the locking element being used to abut against the wheel mold to lock the height of the wheel mold base.

[0008] Preferably, in order to ensure the height position of the wheel groove during the bending process, locking components are provided above and below the guide mold groove.

[0009] Preferably, in order to fix the height position of the wheel groove, the locking member includes a locking arm integrally formed on the guide groove.

[0010] Preferably, in order to reduce the friction between the wheel groove and the guide mold groove when the wheel groove rotates, the locking member further includes a rolling member disposed between the locking arm and the wheel mold, the rolling member rotating on the locking arm or the wheel mold.

[0011] Preferably, for ease of maintenance, the rolling element is a ball that can be detachably rotated on the locking arm, and the ball protrudes from the side of the locking arm adjacent to the wheel mold.

[0012] Preferably, in order to increase the number of force-bearing nodes, the balls are densely distributed at the end of the locking arm adjacent to the wheel mold assembly.

[0013] Preferably, in order to realize the replacement and removal of the ball, the locking arm includes a fixed arm integrally formed on the guide mold groove and a movable arm detachably disposed on the side of the fixed arm away from the guide mold groove. The fixed arm and the movable arm are provided with a fixed through hole and a movable hole. The fixed through hole and the movable hole surround to form an assembly cavity adapted to the ball. The inner wall of the assembly cavity fits against the ball.

[0014] Preferably, in order to facilitate the insertion of the pipe between the wheel groove and the guide mold groove, the extension trajectory of the wheel groove includes a semicircular segment and two straight segments connected to and parallel to the two ends of the semicircular segment, and the two straight segments extend to the same surface of the wheel mold.

[0015] Preferably, in order to avoid the bent portion of the pipe, the moving unit includes a moving rack, a moving motor, and a moving gear. The moving rack slides along its own length on the rotating seat, the moving gear meshes with the moving rack, the moving motor is fixed on the rotating seat and driven by the moving gear, and the moving rack is located on the side and below the clamping groove to accommodate the bent portion of the pipe.

[0016] Preferably, in order to improve the bending accuracy of the pipe, a support bar with the same length direction as the moving rack and fixedly connected to the clamping groove is fixedly placed directly above the moving rack. The support bar is used to horizontally support the bent part of the pipe.

[0017] In summary, compared with the prior art, the split-type rotating block assembly of this utility model for pipe bending machines clamps the pipe through the cooperation of the clamping groove and the wheel groove during the pipe bending operation. At the same time, the locking part on the guide mold groove reduces the height position of the wheel groove, so that the height position of the wheel groove and the clamping groove is fixed during the rotation of the rotating assembly and the rotating seat, avoiding positional displacement in the height direction, ensuring bending accuracy, improving product quality, thereby ensuring yield and production efficiency, and avoiding material waste. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the first embodiment; Figure 2 yes Figure 1 An explosion diagram; Figure 3 This is a structural schematic diagram from another perspective of the first embodiment; Figure 4 yes Figure 3 Cross-sectional structural diagram; Figure 5 This is a partial structural schematic diagram of the second embodiment; Figure 6 yes Figure 5 An explosion diagram; In the diagram: 1. Guide mold assembly; 11. Guide mold groove; 12. Translation unit; 121. Translation cylinder; 122. Translation plate; 1221. Slide opening; 13. Bracket; 14. Fixed guide bar; 15. Limiting protrusion; 2. Rotating assembly; 21. Rotating motor; 22. Screw; 23. Screw sleeve; 24. Rotating rack; 25. Rotating gear; 26. Bearing; 27. Guide rail; 28. Guide bar; 3. Rotating seat; 31. Caster wheel; 32. Slide groove; 33. Upper fixed seat; 34. Lower fixed cylinder; 35. Rotating boss; 36. Slide tube; 4. Wheel mold assembly; 41. Lifting unit; 411. Power cylinder; 412. Power push block; 413. Pressure-bearing slide bar; 42. Wheel mold seat; 421. Wheel groove; 422. Lifting seat; 5. Clamping mold assembly; 51. Moving unit; 511. Moving rack; 512. Moving gear; 513. Moving motor; 514. Support bar; 52. Clamping groove; 53. Slide bar; 6. Locking component; 61. Locking arm; 611. Fixed arm; 6111. Fixed through hole; 612. Movable arm; 6121. Movable hole; 613. Clamping arm; 62. Rolling component; 63. Bolt; 7. Pipe. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0020] First Embodiment

[0021] like Figures 1-4 As shown, the split-type rotating block assembly for a pipe bending machine according to the first embodiment of this utility model includes: The mold guide assembly 1 includes a mold guide groove 11 extending in the horizontal direction and a translation unit 12 that drives the mold guide groove 11 to move along its own length direction. The mold guide groove 11 is a through groove with its opening facing horizontally and its inner wall cross-section being semi-circular. Rotating component 2 and rotating seat 3, rotating component 2 drives rotating seat 3 to rotate and the rotation axis extends in the vertical direction; The wheel mold assembly 4 includes a lifting unit 41 disposed on the rotating base 3 and a wheel mold base 42 disposed at the output end of the lifting unit 41. The wheel mold base 42 is provided with a horizontal wheel groove 421. The clamping assembly 5 includes a moving unit 51 disposed on the rotating base 3 and a clamping groove 52 disposed at the output end of the translation unit 12. The moving direction of the clamping groove 52 is horizontal and perpendicular to the length direction of the guide groove 11. The inner wall cross-sections of the clamping groove 52 and the wheel groove 421 are both semi-circular with the same inner diameter as the inner diameter of the guide mold groove 11. The clamping groove 52 and the wheel groove 421 are used to combine to form a clamping mold channel. The moving path of the clamping mold channel includes the clamping position. In the clamping position, the clamping mold channel and the guide mold groove 11 are coaxial and the groove openings of the clamping groove 52 and the guide mold groove 11 are aligned. A locking element 6 is provided above and / or below the guide mold groove 11. The locking element 6 is used to abut against the wheel mold to lock the height of the wheel mold base 42.

[0022] In use, the device adjusts the wheel groove 421 on the wheel mold base 42 to the same height as the guide mold groove 11 using the lifting unit 41. Then, the pipe 7 to be processed is inserted between the wheel groove 421, the guide mold groove 11, and the clamping groove 52 (it should be noted that the outer diameter of the pipe 7 is the same as the inner diameter of the wheel groove 421, the guide mold groove 11, and the clamping groove 52). Then, the position of the guide mold groove 11 is adjusted by the translation unit 12, so that the guide mold groove 11 drives the locking member 6 to move, so that the locking member 6 abuts against the top and / or bottom of the wheel groove 421. At the same time, the moving unit 51 drives the clamping groove 52 to move towards the guide mold groove 11, so that the opening of the clamping groove 52 is aligned with the guide mold groove 11. When the grooves of the mold groove 11 overlap, the clamping groove 52 and the guide mold groove 11 form a clamping channel, which clamps and fixes the pipe 7. At the same time, the outer edge of the pipe 7 abuts against the inner wall of the wheel groove 421, the guide mold groove 11 and the clamping groove 52. At this time, the pipe 7, the clamping channel and the guide mold groove 11 are coaxial, and the clamping channel is adjacent to one end of the guide mold groove 11. Then, the rotating component 2 is started, which drives the rotating seat 3 to rotate horizontally, so that the clamping channel rotates synchronously, and then acts on the pipe 7, causing the pipe 7 to bend. After the pipe 7 is bent, the moving unit 51 moves the clamping groove 52 away from the wheel groove 421, making it easier to remove the bent pipe 7. During the pipe bending process, the locking element 6 can always lock the height position of the wheel groove 421, thereby preventing the wheel groove 421 from shifting up and down and causing positional wobbling. This, in turn, fixes the height position of the pipe 7 and the clamping groove 52, ensuring that the axis of the pipe 7 is always in a horizontal plane. This ensures the quality of pipe bending, avoids material waste, and guarantees the yield rate, thus helping to improve processing efficiency.

[0023] In this embodiment, locking members 6 are provided above and below the guide mold groove 11. Thus, during the pipe bending process, the height positions of the wheel mold base 42 and the wheel groove 421 can be locked by the locking arms 61 on the upper and lower sides of the guide mold groove 11, further ensuring the bending and forming quality of the pipe 7.

[0024] Specifically, the locking component 6 includes a locking arm 61 integrally formed on the guide mold groove 11. More specifically, the locking arm 61 is a long strip-shaped structure integrally formed on the upper and lower sides of the guide mold groove 11, protruding from the groove opening of the guide mold groove 11. When bending the pipe, the upper locking arm 61 fits against the edge of the clamping groove 52 on the top surface of the wheel mold base 42, while the lower locking arm 61 fits against the edge of the clamping groove 52 on the bottom surface of the wheel mold base 42. The two locking arms 61 cooperate with each other to limit the height position of the wheel mold base 42 and ensure the complete forming quality of the pipe 7.

[0025] A further improvement is that the extension trajectory of the groove 421 includes a semicircular segment and two straight segments connected to and parallel to the two ends of the semicircular segment, with the two straight segments extending to the same surface of the mold. During pipe bending, the portion of the groove 421 extending along one of the straight segments forms a clamping channel with the clamping groove 52 to clamp the pipe 7, keeping the clamped portion of the pipe 7 relatively fixed to the mold base 42 and the clamping groove 52. As the rotating component 2 drives the rotating seat 3 to rotate, the clamped portion remains relatively fixed, while the adjacent portion is subjected to force and undergoes bending deformation, thus realizing the pipe bending operation. The semicircular segment facilitates the passage of the pipe 7 through the groove 421, while the other straight segment makes the mold base 42 have a mirror-symmetrical structure to ensure consistent structural strength on both sides.

[0026] A further improvement is that the moving unit 51 includes a moving rack 511, a moving motor 513, and a moving gear 512. The moving rack 511 slides along its own length on the rotating seat 3. The moving gear 512 meshes with the moving rack 511. The moving motor 513 is fixed on the rotating seat 3 and driven by the moving gear 512. The moving rack 511 is located on the side and below the clamping groove 52 to accommodate the bent portion of the tube 7.

[0027] With this design, the movable rack 511 is positioned on the lower side of the clamping groove 52, so that there is clearance space above the movable rack 511 to accommodate the bent part of the pipe 7. This makes it easier to bend different parts of the same pipe 7 multiple times and bend the pipe 7 into an S-shape.

[0028] A further improvement is that a support bar 514 with the same length direction and fixedly connected to the clamping groove 52 is fixedly installed directly above the moving rack 511. The support bar 514 is used to horizontally support the bent part of the pipe 7.

[0029] With this design, the support bar 514 can be used to support the pipe 7 horizontally. While the support bar 514 supports the pipe 7, the clamping groove 52 and the wheel groove 421 cooperate to clamp the pipe 7 near the bending position. This ensures that after the rotating component 2 drives the rotating seat 3 to rotate, the axis of the pipe 7 is curved, but it is still on a horizontal plane.

[0030] Specifically, the top surface of the rotating seat 3 is provided with two horizontal sliding grooves 32 with their openings facing each other. A sliding bar 53 of the same length direction is fixed below the support bar 514. The two sides of the sliding bar 53 slide between the two sliding grooves 32. The clamping groove 52 is fixed to the upper side of one end of the support bar 514. The rotating seat 3 is provided with a notch that connects to the lower part of the sliding groove 32. The moving rack 511 is fixed below the sliding bar 53 and has the same length direction as the sliding bar 53. The moving gear 512 rotates around its own axis. The line rotates within the notch and meshes with the moving rack 511. The moving motor 513 is fixed on the rotating seat 3 and its output end is fixedly connected to the coaxial center line of the moving gear 512. Thus, the moving motor 513 can drive the moving gear 512 to rotate, which in turn drives the moving rack 511 to move along its own length. With the sliding cooperation of the slide bar 53 and the slide groove 32, the support bar 514 can move stably along its own length to achieve the clamping of the pipe 7 after docking with the wheel groove 421.

[0031] More specifically, the guide mold assembly 1 also includes a bracket 13, which is fixed above the ground. A fixed guide strip 14 is fixed on the top surface of the bracket 13. The fixed guide strip 14 extends along the length direction of the guide mold groove 11. A limiting protrusion 15 is integrally formed on the top surface of the fixed guide strip 14. The translation unit 12 includes a translation cylinder 121 and a translation plate 122. The translation plate 122 is attached to the top surface of the bracket 13 and is provided with a sliding opening 1221 with the same length direction as the guide mold groove 11. The inner walls on both sides of the sliding opening 1221 are attached to the fixed guide strip 14. The limiting protrusion 15 is attached to the top surface of the translation plate 122. The cylinder of the translation cylinder 121 is fixed on the bracket 13 and its axis is parallel to the length direction of the guide mold groove 11. The piston rod is fixedly connected to the translation plate 122. Thus, the translation cylinder 121 can drive the translation plate 122 to move smoothly under the sliding cooperation of the slide 1221 and the fixed guide bar 14, thereby driving the guide mold groove 11 to move, so that the guide mold groove 11 disengages from the wheel mold base 42 or contacts the wheel mold base 42 to lock the height position of the wheel mold base 42.

[0032] Rotating assembly 2 includes a rotating motor 21, a screw 22, a screw sleeve 23, a rotating rack 24, a rotating gear 25, and a bearing 26. Specifically, the outer rings of the rotating motor 21 and the bearing 26 are fixed to the ground. The rotating motor 21 is driven by the screw 22, and the axial direction of the screw 22 is parallel to the length direction of the guide mold groove 11. The screw sleeve 23 is threadedly connected to the screw 22. The rotating rack 24 is fixed to one side of the screw sleeve 23, and its length direction is consistent with the length direction of the guide mold groove 11. The rotating gear 25 is a ring gear. The bottom of the rotating seat 3... The rotating seat 3 is also integrally connected to a rotating boss 35. The rotating gear 25 meshes with the rotating rack 24 and its inner wall is fixedly connected to the rotating boss 35. The inner ring of the bearing 26 is fixedly connected to the rotating boss 35, and the outer ring is fixed to the ground. The other end of the bottom surface of the rotating seat 3 is provided with a universal wheel 31 to support the rotating seat 3. The rotating assembly 2 also includes a guide rail 27 fixed to the ground and in the same length direction as the guide mold groove 11. Two guide bars 28 slide on the guide rail 27. The two guide bars 28 are fixedly connected to the rotating rack 24 and the threaded sleeve 23 respectively.

[0033] With the above structure, the rotating motor 21 runs, driving the screw 22 to rotate, which acts on the screw sleeve 23, causing the screw sleeve 23 to drive the rotating rack 24 to translate. The rotating rack 24 acts on the rotating gear 25, and under the guidance of the bearing 26, the rotating gear 25 rotates around its own axis, thereby driving the rotating seat 3 to rotate.

[0034] The rotating seat 3 also has an integrally formed slide tube 36 extending vertically. The end of the rotating seat 3 away from the universal wheel 31 is provided with a notch. A lower fixed cylinder 34 extending vertically is fixed in the notch. An upper fixed seat 33 is fixed at the top of the lower fixed cylinder 34. A horizontal lifting seat 422 is fixed below the wheel mold seat 42. The lifting seat 422 slides vertically on the upper fixed seat 33. The lifting unit 41 includes a power cylinder 411, a power push block 412 and a pressure sliding rod 413. The power cylinder 411 is circumferentially horizontal. Its cylinder is fixed at the bottom of the notch. The piston rod seal passes through the lower fixed cylinder 34 and is fixedly connected to the power push block 412. The top surface of the power push block 412 is inclined. The bottom surface of the pressure sliding rod 413 is parallel to the top surface of the power push block 412. The top end is fixed below the lifting seat 422 and passes through the upper fixed seat 33. The pressure sliding rod 413 slides through the inner side of the slide tube 36.

[0035] With the above structure, under the influence of gravity, the wheel mold base 42, the lifting base 422, and the pressure-bearing slide rod 413 slide downwards, so that the bottom surface of the pressure-bearing slide rod 413 is in contact with the inclined top surface of the power push block 412. The power cylinder 411 drives the power push block 412 to move, changing the position of the power push block 412, so that the power push block 412 acts on the top surface of the pressure-bearing slide rod 413, causing the pressure-bearing slide rod 413 to move in the vertical direction under the guidance of the slide tube 36, thereby driving the wheel mold base 42 to move up and down.

[0036] Second Embodiment

[0037] like Figure 5 and Figure 6 As shown, the split rotating block assembly for a pipe bending machine in the second embodiment of this utility model is based on the first embodiment, except that the locking member 6 further includes a rolling member 62 disposed between the locking arm 61 and the wheel mold, and the rolling member 62 rotates on the locking arm 61 or the wheel mold seat 42.

[0038] This design converts the sliding friction between the locking arm 61 and the wheel mold seat 42 into rolling friction through the rotating rolling element 62, thereby reducing frictional resistance and facilitating the rotation of the rotating component 2 to drive the rotating seat 3 to rotate, thus realizing the pipe bending operation.

[0039] A further improvement is that the rolling element 62 is a ball that can be detachably rotated on the locking arm 61, with the ball protruding from the side of the locking arm 61 adjacent to the wheel mold; the ball is densely distributed at the end of the locking arm 61 adjacent to the wheel mold assembly 4.

[0040] In this embodiment, the ball can rotate in any direction with its own center as the center, and there are multiple balls, which increases the number of contact points between the ball and the wheel mold seat 42, making it easier for the wheel mold seat 42 to rotate. In addition, the ball can be detached from the locking arm 61, which makes it convenient to replace the ball after long-term use when the surface of the ball is worn, so as to ensure the locking effect on the height position of the wheel mold seat 42.

[0041] Specifically, the locking arm 61 includes a fixed arm 611 integrally formed on the guide mold groove 11 and a movable arm 612 detachably disposed on the side of the fixed arm 611 away from the guide mold groove 11. The fixed arm 611 and the movable arm 612 are provided with a fixed through hole 6111 and a movable hole 6121. The fixed through hole 6111 and the movable hole 6121 surround and form an assembly cavity adapted to the ball. The inner wall of the assembly cavity fits against the ball.

[0042] More specifically, the locking arm 61 also includes a clamping arm 613, which is integrally formed above and below the guide mold groove 11 and along the same length as the guide mold groove 11. An opening is provided at one corner of the clamping arm 613 adjacent to the wheel mold assembly 4. The fixed arm 611 is integrally formed on the inner wall of the opening, and the side of the fixed arm 611 adjacent to the groove of the guide mold groove 11 and the side of the clamping arm 613 adjacent to the guide mold groove 11 are on the same horizontal plane. The movable arm 612 fits against the side of the fixed arm 611 facing away from the groove of the guide mold groove 11 and is fixedly connected to the clamping arm 613 by bolts 63. The movable hole 6121 is a blind hole with a hemispherical inner wall. The inner wall of the fixed through hole 6111 and the inner wall of the movable hole 6121 are on the same spherical surface, and the surface area of ​​the inner wall of the fixed through hole 6111 is smaller than the surface area of ​​the inner wall of the movable hole 6121.

[0043] Thus, the ball bearings are assembled between the inner walls of the movable hole 6121 and the fixed through hole 6111, and can be detachably connected to the clamping arm 613 by bolts 63, thereby realizing the detachable connection between the fixed arm 611 and the movable arm 612. On the one hand, this facilitates the replacement of the ball bearings and ensures the smoothness of the ball bearing surface. On the other hand, it allows the ball bearings to pass through the fixed through hole 6111 and abut against the wheel mold seat 42. By utilizing its own rotation between the movable hole 6121 and the fixed through hole 6111, it reduces the resistance encountered by the wheel mold seat 42 when rotating. This facilitates the rotation of the wheel mold seat 42 while locking the height position of the wheel mold seat 42 and the wheel groove 421, thereby ensuring the bending processing quality of the pipe 7 and avoiding material waste.

[0044] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A split-type rotating block assembly for a pipe bending machine, characterized in that, include: The mold guide assembly includes a mold guide groove extending in a horizontal direction and a translation unit that drives the mold guide groove to move along its own length direction. The mold guide groove is a through groove with its opening facing horizontally and its inner wall cross-section being semi-circular. A rotating assembly and a rotating base, wherein the rotating assembly drives the rotating base to rotate and the rotation axis extends in a vertical direction; The wheel mold assembly includes a lifting unit disposed on the rotating base and a wheel mold base disposed at the output end of the lifting unit, wherein the wheel mold base is provided with a horizontal wheel groove; The clamping assembly includes a moving unit disposed on the rotating base and a clamping groove disposed at the output end of the translation unit, wherein the moving direction of the clamping groove is horizontal and perpendicular to the length direction of the guide groove; The inner wall cross-sections of the clamping groove and the wheel groove are both semicircles with the same inner diameter as the inner diameter of the guide mold groove. The clamping groove and the wheel groove are used to combine to form a clamping mold channel. The moving path of the clamping mold channel includes the clamping position. In the clamping position, the clamping mold channel and the guide mold groove are coaxial and the groove openings of the clamping groove and the guide mold groove face the same direction. A locking element is provided above and / or below the guide mold groove, the locking element being used to abut against the wheel mold to lock the height of the wheel mold base.

2. The split-type rotating block assembly for a pipe bending machine according to claim 1, characterized in that: Locking elements are provided above and below the guide groove.

3. The split-type rotating block assembly for a pipe bending machine according to claim 1, characterized in that: The locking component includes a locking arm integrally formed on the guide groove.

4. The split-type rotating block assembly for a pipe bending machine according to claim 3, characterized in that: The locking component further includes a rolling element disposed between the locking arm and the wheel mold, the rolling element rotating on the locking arm or the wheel mold.

5. The split-type rotating block assembly for a pipe bending machine according to claim 4, characterized in that: The rolling element is a ball that can be detachably rotated on the locking arm, and the ball protrudes from the side of the locking arm adjacent to the wheel mold.

6. The split-type rotating block assembly for a pipe bending machine according to claim 5, characterized in that: The ball bearings are densely distributed at the end of the locking arm adjacent to the wheel mold assembly.

7. The split-type rotating block assembly for a pipe bending machine according to claim 5, characterized in that: The locking arm includes a fixed arm integrally formed on the guide mold groove and a movable arm detachably disposed on the side of the fixed arm away from the guide mold groove. The fixed arm and the movable arm are provided with a fixed through hole and a movable hole. The fixed through hole and the movable hole surround to form an assembly cavity adapted to the ball. The inner wall of the assembly cavity is in contact with the ball.

8. The split-type rotating block assembly for a pipe bending machine according to any one of claims 1-7, characterized in that: The extension trajectory of the wheel groove includes a semicircular segment and two straight segments that are connected to and parallel to both ends of the semicircular segment, and the two straight segments extend to the same surface of the wheel mold.

9. The split-type rotating block assembly for a pipe bending machine according to any one of claims 1-7, characterized in that: The moving unit includes a moving rack, a moving motor, and a moving gear. The moving rack slides along its own length on the rotating seat. The moving gear meshes with the moving rack. The moving motor is fixed on the rotating seat and driven by the moving gear. The moving rack is located below the side of the clamping groove to accommodate the bent portion of the pipe.

10. The split-type rotating block assembly for a pipe bending machine according to any one of claims 1-7, characterized in that: A support bar of the same length and fixedly connected to the groove is fixed directly above the movable rack. The support bar is used to horizontally support the bent part of the pipe.

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