An interchange device for stretch bending and roll bending in a tube bender

Abstract

The present invention is applicable to the technical field of pipe benders, and provides an interchangeable device for stretch bending and roll bending in a pipe bender, including a main clamping die assembly and an auxiliary rolling wheel assembly; by connecting the first clamping die base, the second clamping die base and the rolling wheel die base to the machine body through clamping die base locking blocks, when the bending radius of the pipe is small and stretch bending is required, the clamping die is connected to the first clamping die base, the second clamping die base and the rolling wheel die base through a main clamping dovetail key. When the pipe is bent greatly and roll bending is required, the main clamping rolling wheel die base can be used to replace the clamping die and connect to the first clamping die base, the second clamping die base and the rolling wheel die base. At the same time, when the bending radius is small, the pushing plate can be connected to the guiding die, and stretch bending is carried out through a pushing oil cylinder. When the bending radius of the pipe is large, the auxiliary rolling wheel base can be used to replace the guiding die and connect to the pushing plate, and at the same time, the oil cylinder controlling the stretch bending layer does not act to perform roll bending, so as to realize the pipe bending requirements of both roll bending and stretch bending of the pipe on the same machine.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipe benders, and particularly relates to an interchange device for stretch bending and roll bending in a pipe bender. Background Art

[0002] Pipe benders are mainly used for bending steel pipes in electric power construction, boilers, bridges, ships, furniture, decoration, etc. They have the advantages of multiple functions, reasonable structure, simple operation, etc. In addition to the pipe bending function, this machine can also use the oil cylinder as a hydraulic jack, and has the characteristics of low price and convenient use compared with numerically controlled pipe bending equipment, occupying the leading product position in the domestic pipe bender market.

[0003] Traditional pipe benders can only perform single roll bending or stretch bending operations on pipes. Summary of the Invention

[0004] The present invention provides an interchange device for stretch bending and roll bending in a pipe bender, aiming to solve the problem that traditional pipe benders can only perform single roll bending or stretch bending operations on pipes.

[0005] The present invention is realized as follows: An interchange device for stretch bending and roll bending in a pipe bender includes a main clamping die assembly, a main clamping die positioning assembly, a mandrel assembly, an auxiliary clamping die assembly, an auxiliary clamping die group, and an auxiliary rolling wheel assembly;

[0006] The main clamping die assembly includes a machine body, a clamping die seat lock block, a first clamping die seat, a support key, a first adjusting bolt platform, and a second clamping die seat. The clamping die seat lock block is fixedly connected to the machine body, and the clamping die seat lock block is located on one side of the machine body. The support key is slidably connected to the clamping die seat lock block, and the support key is located on the side of the clamping die seat lock block away from the machine body. The first clamping die seat is fixedly connected to the support key, and the first clamping die seat is located on the side of the support key away from the clamping die seat lock block. The first adjusting bolt platform is fixedly connected to the first clamping die seat, and the first adjusting bolt platform is located on one side of the first clamping die seat. The second clamping die seat is fixedly connected to the first clamping die seat, and the second clamping die seat is located at one end of the first clamping die seat away from the support key;

[0007] The main clamping die positioning component includes a main stop block, a tooth rod, a reel die base, and a main clamping dovetail key. There are two main stop blocks, and the two main stop blocks are respectively fixedly connected to the first clamping die base and the second clamping die base. The main stop block is located on one side of the second clamping die base. The tooth rod is fixedly connected to the main stop block, and the tooth rod is located on the side of the main stop block away from the first clamping die base. The reel die base is fixedly connected to the second clamping die base, and the reel die base is located on the side of the second clamping die base away from the first clamping die base. There are three main clamping dovetail keys, and the three main clamping dovetail keys are respectively fixedly connected to the first clamping die base, the second clamping die base, and the reel die base. The main clamping dovetail key is located on the side of the first clamping die base away from the first adjusting bolt platform.

[0008] Preferably, the main clamping die positioning component further includes a main clamping reel die base, a main pressing block, a first bearing, and a reel core shaft. The main clamping reel die base is detachably connected to the main clamping dovetail key, and the main clamping reel die base is located on the side of the main clamping dovetail key away from the reel die base. The main pressing block is fixedly connected to the main clamping reel die base, and the main pressing block is located on the side of the main clamping reel die base away from the machine body. The reel core shaft is fixedly connected to the main clamping reel die base, and the reel core shaft is sleeved in the inner cavity of the main clamping reel die base. The first bearing is fixedly connected to the reel core shaft, and the reel core shaft is sleeved on the outside of the first bearing.

[0009] Preferably, the reel core component includes a second bearing, a third bearing, a wheel die positioning key, a die positioning member, and a die base. The second bearing is fixedly connected to the reel core shaft, and the second bearing is located on the side of the first bearing away from the main clamping reel die base. The third bearing is fixedly connected to the reel core shaft, and the third bearing is located on the side of the second bearing away from the first bearing. The die base is rotatably connected to the machine body, and the die base is located on one side of the second bearing. The die positioning member is fixedly connected to the die base, and the die positioning member is located on the side of the die base away from the machine body. The wheel die positioning key is fixedly connected to the die positioning member, and the wheel die positioning key is located on the side of the die positioning member away from the die base.

[0010] Preferably, the auxiliary clamping die assembly includes an auxiliary clamping slider, an auxiliary machine base, an auxiliary clamping lock block, a boosting seat and a boosting oil cylinder. The auxiliary machine base is slidably connected to the machine body and is located on one side of the machine body. The auxiliary clamping slider is slidably connected to the auxiliary machine base and is located on the side of the auxiliary machine base away from the machine body. The auxiliary clamping lock block is fixedly connected to the auxiliary clamping slider and is located on the side of the auxiliary clamping slider away from the auxiliary machine base. The boosting seat is fixedly connected to the auxiliary clamping lock block and is located on the side of the auxiliary clamping lock block away from the auxiliary clamping slider. The boosting oil cylinder is fixedly connected to the boosting seat and is located inside the cavity of the boosting seat.

[0011] Preferably, the auxiliary clamping module includes a backing plate, a boosting die sleeve inlay strip, a boosting die sleeve middle inlay strip, a boosting plate fixing block, a boosting plate, a push rod positioning key and an adjusting block. The backing plate is fixedly connected to the boosting seat and is located on one side wall of the boosting seat. The boosting die sleeve middle inlay strip is fixedly connected to the backing plate, and there are two boosting die sleeve inlay strips. Both of the two boosting die sleeve inlay strips are located on the side of the backing plate away from the boosting seat. The boosting die sleeve middle inlay strip is slidably connected to the backing plate and is located between the two boosting die sleeve inlay strips. The boosting plate is fixedly connected to the boosting die sleeve middle inlay strip and is located on the side of the boosting die sleeve middle inlay strip away from the backing plate. The boosting plate is slidably connected to the boosting die sleeve inlay strip. The boosting dovetail block is slidably connected to the boosting plate and is located on the side of the boosting plate away from the boosting die sleeve middle inlay strip. The push rod positioning key is detachably connected to the boosting plate and is located on one side of the boosting dovetail block. The adjusting block is fixedly connected to the boosting dovetail block and is located on the side of the boosting dovetail block away from the boosting plate. The boosting plate fixing block is fixedly connected to the boosting oil cylinder and the boosting die sleeve middle inlay strip and is located at the output end of the boosting oil cylinder.

[0012] Preferably, the auxiliary winding wheel assembly includes an auxiliary winding wheel seat, an adjusting seat, a fourth bearing, a fifth bearing, an auxiliary winding core wheel shaft and an auxiliary pressing block. The auxiliary winding wheel seat is detachably connected to the boosting dovetail block and is located on the side of the boosting dovetail block away from the boosting plate. The adjusting seat is fixedly connected to the auxiliary winding wheel seat and is located on one side of the auxiliary winding wheel seat. Both the fourth bearing and the fifth bearing are fixedly connected to the auxiliary winding wheel seat and are sleeved inside the cavity of the auxiliary winding wheel seat. The auxiliary winding core wheel shaft is fixedly connected to the fifth bearing and the fourth bearing and is sleeved inside the cavities of the fourth bearing and the fifth bearing. The auxiliary pressing block is fixedly connected to the auxiliary winding wheel seat and is located on one side of the fourth bearing.

[0013] Preferably, the main clamping die assembly further includes an adjusting support, a first adjusting bolt, and a first adjusting nut. The adjusting support is fixedly connected to the clamping die base lock block, and the adjusting support is located on the side of the first adjusting bolt platform away from the clamping die base lock block. The first adjusting bolt is threadedly connected to the adjusting support and the first adjusting bolt platform, and the first adjusting bolt penetrates through the adjusting support and extends into the inner cavity of the first adjusting bolt platform. The first adjusting nut is threadedly connected to the first adjusting bolt, and the first adjusting nut is located on the side of the second clamping die base away from the first adjusting bolt platform.

[0014] Preferably, the main clamping die assembly further includes an auxiliary adjusting support, a second adjusting nut, a second adjusting bolt platform, and a second adjusting bolt. The auxiliary adjusting support is fixedly connected to the auxiliary machine base, and the auxiliary adjusting support is located between the auxiliary machine base and the auxiliary clamping slider. The second adjusting bolt platform is fixedly connected to the auxiliary adjusting support, and the second adjusting bolt platform is located on one side of the auxiliary adjusting support. The second adjusting bolt is threadedly connected to the second adjusting bolt platform and the auxiliary clamping slider, and the second adjusting bolt penetrates through the auxiliary adjusting support and extends to one side of the auxiliary adjusting support. The second adjusting nut is threadedly connected to the second adjusting bolt, and the second adjusting nut is sleeved on the outer side of the second adjusting bolt.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In an interchange device for stretch bending and roll bending in a pipe bender of the present invention, the first clamping die base, the second clamping die base, and the coiling die base are connected to the machine body through the clamping die base lock block. When the bending radius of the pipe is small and stretch bending is required, the clamping die is connected to the first clamping die base, the second clamping die base, and the coiling die base through the main clamping dovetail key. When the bending of the pipe is large and roll bending is required, the main clamping coiling die base can be used to replace the clamping die and be connected to the first clamping die base, the second clamping die base, and the coiling die base. At the same time, when the bending radius is small, the pushing plate can be used to connect to the guiding die, and stretch bending is performed through the pushing oil cylinder. When the bending radius of the pipe is large, the auxiliary coiling seat can be used to replace the guiding die and be connected to the pushing plate, and at the same time, the oil cylinder controlling the stretch bending layer does not act, and roll bending is performed, so as to realize the pipe bending requirements of both stretch bending and roll bending of the pipe on the same machine. Description of the Drawings

[0016] Figure 1 Schematic structural diagram of the main clamping die assembly of the present invention;

[0017] Figure 2 Schematic structural diagram of the auxiliary clamping die assembly of the present invention;

[0018] In the figure: 1 - Main clamping die assembly, 11 - Machine body, 12 - Clamping die seat lock block, 13 - First clamping die seat, 14 - Support key, 15 - First adjusting bolt platform, 16 - Adjusting support, 17 - First adjusting bolt, 18 - First adjusting nut, 19 - Second clamping die seat, 2 - Main clamping die positioning assembly, 21 - Main stop block, 22 - Tooth rod, 23 - Winding wheel die seat, 24 - Main clamping dovetail key, 25 - Main clamping winding wheel die seat, 26 - Main pressing block, 27 - First bearing, 28 - Winding core wheel shaft, 3 - Winding core assembly, 31 - Second bearing, 32 - Third bearing, 33 - Wheel die positioning key, 34 - Die positioning part, 35 - Die seat, 4 - Auxiliary clamping die assembly, 41 - Auxiliary clamping slider, 42 - Auxiliary adjusting support, 43 - Second adjusting nut, 44 - Second adjusting bolt platform, 45 - Second adjusting bolt, 46 - Auxiliary machine base, 47 - Auxiliary clamping lock block, 48 - Boosting seat, 49 - Boosting oil cylinder, 5 - Auxiliary clamping die module, 51 - Base plate, 52 - Boosting die sleeve inlay strip, 53 - Boosting die sleeve middle inlay strip, 54 - Boosting plate fixing block, 55 - Boosting plate, 56 - Push rod positioning key, 57 - Boosting dovetail block, 58 - Adjusting block, 6 - Auxiliary winding wheel assembly, 61 - Auxiliary winding wheel seat, 62 - Adjusting seat, 63 - Fourth bearing, 64 - Fifth bearing, 65 - Auxiliary winding core wheel shaft, 66 - Auxiliary pressing block. Detailed implementation manner

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] Please refer to Figure 1-2 , the present invention provides a technical solution: An interchange device for stretch bending and roll bending in a pipe bender, including a main clamping die assembly 1, a main clamping die positioning assembly 2, a winding core assembly 3, an auxiliary clamping die assembly 4, an auxiliary clamping die module 5 and an auxiliary winding wheel assembly 6;

[0021] The main clamping die assembly 1 includes a machine body 11, a clamping die seat lock block 12, a first clamping die seat 13, a support key 14, a first adjusting bolt platform 15 and a second clamping die seat 19. The clamping die seat lock block 12 is fixedly connected to the machine body 11, and the clamping die seat lock block 12 is located on one side of the machine body 11. The support key 14 is slidably connected to the clamping die seat lock block 12, and the support key 14 is located on the side of the clamping die seat lock block 12 away from the machine body 11. The first clamping die seat 13 is fixedly connected to the support key 14, and the first clamping die seat 13 is located on the side of the support key 14 away from the clamping die seat lock block 12. The first adjusting bolt platform 15 is fixedly connected to the first clamping die seat 13, and the first adjusting bolt platform 15 is located on one side of the first clamping die seat 13. The second clamping die seat 19 is fixedly connected to the first clamping die seat 13, and the second clamping die seat 19 is located at the end of the first clamping die seat 13 away from the support key 14;

[0022] The main clamping die positioning assembly 2 includes a main stop block 21, a threaded rod 22, a reel die base 23 and a main clamping dovetail key 24. There are two main stop blocks 21, and the two main stop blocks 21 are respectively fixedly connected to the first clamping die base 13 and the second clamping die base 19. The main stop block 21 is located on one side of the second clamping die base 19. The threaded rod 22 is fixedly connected to the main stop block 21, and the threaded rod 22 is located on the side of the main stop block 21 away from the first clamping die base 13. The reel die base 23 is fixedly connected to the second clamping die base 19, and the reel die base 23 is located on the side of the second clamping die base 19 away from the first clamping die base 13. There are three main clamping dovetail keys 24, and the three main clamping dovetail keys 24 are respectively fixedly connected to the first clamping die base 13, the second clamping die base 19 and the reel die base 23. The main clamping dovetail key 24 is located on the side of the first clamping die base 13 away from the first adjusting bolt platform 15.

[0023] The main clamping die positioning assembly 2 further includes a main clamping reel die base 25, a main pressing block 26, a first bearing 27 and a reel core shaft 28. The main clamping reel die base 25 is detachably connected to the main clamping dovetail key 24, and the main clamping reel die base 25 is located on the side of the main clamping dovetail key 24 away from the reel die base 23. The main pressing block 26 is fixedly connected to the main clamping reel die base 25, and the main pressing block 26 is located on the side of the main clamping reel die base 25 away from the machine body 11. The reel core shaft 28 is fixedly connected to the main clamping reel die base 25, and the reel core shaft 28 is sleeved in the inner cavity of the main clamping reel die base 25. The first bearing 27 is fixedly connected to the reel core shaft 28, and the reel core shaft 28 is sleeved on the outside of the first bearing 27.

[0024] The reel core assembly 3 includes a second bearing 31, a third bearing 32, a wheel die positioning key 33, a die positioning member 34 and a die base 35. The second bearing 31 is fixedly connected to the reel core shaft 28, and the second bearing 31 is located on the side of the first bearing 27 away from the main clamping reel die base 25. The third bearing 32 is fixedly connected to the reel core shaft 28, and the third bearing 32 is located on the side of the second bearing 31 away from the first bearing 27. The die base 35 is rotatably connected to the machine body 11, and the die base 35 is located on one side of the second bearing 31. The die positioning member 34 is fixedly connected to the die base 35, and the die positioning member 34 is located on the side of the die base 35 away from the machine body 11. The wheel die positioning key 33 is fixedly connected to the die positioning member 34, and the wheel die positioning key 33 is located on the side of the die positioning member 34 away from the die base 35.

[0025] The auxiliary clamping die assembly 4 includes an auxiliary clamping slider 41, an auxiliary machine base 46, an auxiliary clamping lock block 47, a boosting seat 48 and a boosting oil cylinder 49. The auxiliary machine base 46 is slidably connected to the machine body 11, and the auxiliary machine base 46 is located on one side of the machine body 11. The auxiliary clamping slider 41 is slidably connected to the auxiliary machine base 46, and the auxiliary clamping slider 41 is located on the side of the auxiliary machine base 46 away from the machine body 11. The auxiliary clamping lock block 47 is fixedly connected to the auxiliary clamping slider 41, and the auxiliary clamping lock block 47 is located on the side of the auxiliary clamping slider 41 away from the auxiliary machine base 46. The boosting seat 48 is fixedly connected to the auxiliary clamping lock block 47, and the boosting seat 48 is located on the side of the auxiliary clamping lock block 47 away from the auxiliary clamping slider 41. The boosting oil cylinder 49 is fixedly connected to the boosting seat 48, and the boosting oil cylinder 49 is located in the inner cavity of the boosting seat 48.

[0026] The auxiliary clamping module 5 includes a backing plate 51, a boosting die sleeve inlay strip 52, a boosting die sleeve middle inlay strip 53, a boosting plate fixing block 54, a boosting plate 55, a push rod positioning key 56, an adjusting block 58. The backing plate 51 is fixedly connected to the boosting seat 48, and the backing plate 51 is located on one side wall of the boosting seat 48. The boosting die sleeve middle inlay strip 53 is fixedly connected to the backing plate 51, and there are two boosting die sleeve inlay strips 52. Both of the two boosting die sleeve inlay strips 52 are located on the side of the backing plate 51 away from the boosting seat 48. The boosting die sleeve middle inlay strip 53 is slidably connected to the backing plate 51, and the boosting die sleeve middle inlay strip 53 is located between the two boosting die sleeve inlay strips 52. The boosting plate 55 is fixedly connected to the boosting die sleeve middle inlay strip 53, and the boosting plate 55 is located on the side of the boosting die sleeve middle inlay strip 53 away from the backing plate 51. The boosting plate 55 is slidably connected to the boosting die sleeve inlay strip 52. The boosting dovetail block 57 is slidably connected to the boosting plate 55, and the boosting dovetail block 57 is located on the side of the boosting plate 55 away from the boosting die sleeve middle inlay strip 53. The push rod positioning key 56 is detachably connected to the boosting plate 55, and the push rod positioning key 56 is located on one side of the boosting dovetail block 57. The adjusting block 58 is fixedly connected to the boosting dovetail block 57, and the adjusting block 58 is located on the side of the boosting dovetail block 57 away from the boosting plate 55. The boosting plate fixing block 54 is fixedly connected to the boosting oil cylinder 49 and the boosting die sleeve middle inlay strip 53, and the boosting plate fixing block 54 is located at the output end of the boosting oil cylinder 49.

[0027] The auxiliary winding wheel assembly 6 includes an auxiliary winding wheel seat 61, an adjustment seat 62, a fourth bearing 63, a fifth bearing 64, an auxiliary winding core shaft 65 and an auxiliary pressing block 66. The auxiliary winding wheel seat 61 is detachably connected to the boosting dovetail block 57, and the auxiliary winding wheel seat 61 is located on the side of the boosting dovetail block 57 away from the pushing plate 55. The adjustment seat 62 is fixedly connected to the auxiliary winding wheel seat 61, and the adjustment seat 62 is located on one side of the auxiliary winding wheel seat 61. Both the fourth bearing 63 and the fifth bearing 64 are fixedly connected to the auxiliary winding wheel seat 61, and both the fourth bearing 63 and the fifth bearing 64 are sleeved in the inner cavity of the auxiliary winding wheel seat 61. The auxiliary winding core shaft 65 is fixedly connected to the fifth bearing 64 and the fourth bearing 63, and the auxiliary winding core shaft 65 is sleeved in the inner cavities of the fourth bearing 63 and the fifth bearing 64. The auxiliary pressing block 66 is fixedly connected to the auxiliary winding wheel seat 61, and the auxiliary pressing block 66 is located on one side of the fourth bearing 63.

[0028] In this embodiment, the first clamping die seat 13, the second clamping die seat 19 and the winding wheel die seat 23 are connected to the machine body 11 through the clamping die seat lock block 12. When the bending radius of the pipe is small and stretch bending is required, the clamping die is connected to the first clamping die seat 13, the second clamping die seat 19 and the winding wheel die seat 23 through the main clamping dovetail key 24. When the bending of the pipe is large and roll bending is required, the main clamping winding wheel die seat 25 can be used to replace the clamping die and be connected to the first clamping die seat 13, the second clamping die seat 19 and the winding wheel die seat 23. At the same time, when the bending radius is small, the pushing plate 55 can be used to connect to the guiding die, and stretch bending is performed through the pushing oil cylinder 49. When the bending radius of the pipe is large, the auxiliary winding wheel seat 61 can be used to replace the guiding die and be connected to the pushing plate 55, and at the same time, the oil cylinder controlling the stretch bending layer does not act, and roll bending action is performed, so as to realize the pipe bending requirements of both roll bending and stretch bending of the pipe on the same machine.

[0029] Furthermore, the main clamping die assembly 1 further includes an adjusting support 16, a first adjusting bolt 17 and a first adjusting nut 18. The adjusting support 16 is fixedly connected to the clamping die seat lock block 12, and the adjusting support 16 is located on the side of the first adjusting bolt platform 15 away from the clamping die seat lock block 12. The first adjusting bolt 17 is threadedly connected to the adjusting support 16 and the first adjusting bolt platform 15, and the first adjusting bolt 17 penetrates through the adjusting support 16 and extends into the inner cavity of the first adjusting bolt platform 15. The first adjusting nut 18 is threadedly connected to the first adjusting bolt 17, and the first adjusting nut 18 is located on the side of the second clamping die seat 19 away from the first adjusting bolt platform 15.

[0030] In this embodiment, by providing the adjusting support 16, the first adjusting bolt 17 and the first adjusting nut 18, and screwing and fixing the first adjusting bolt 17 to the adjusting support 16 and the first adjusting bolt platform 15, when the first adjusting bolt 17 is rotated, the support key 14 and the first clamping die seat 13 can be driven to move, thereby adjusting the fixed position of the pipe.

[0031] Further, the main clamping die assembly 1 further includes an auxiliary adjusting support 42, a second adjusting nut 43, a second adjusting bolt platform 44 and a second adjusting bolt 45. The auxiliary adjusting support 42 is fixedly connected to the auxiliary machine base 46, and the auxiliary adjusting support 42 is located between the auxiliary machine base 46 and the auxiliary clamping slider 41. The second adjusting bolt platform 44 is fixedly connected to the auxiliary adjusting support 42, and the second adjusting bolt platform 44 is located on one side of the auxiliary adjusting support 42. The second adjusting bolt 45 is threadedly connected to the second adjusting bolt platform 44 and the auxiliary clamping slider 41, and the second adjusting bolt 45 passes through the auxiliary adjusting support 42 and extends to one side of the auxiliary adjusting support 42. The second adjusting nut 43 is threadedly connected to the second adjusting bolt 45, and the second adjusting nut 43 is sleeved on the outer side of the second adjusting bolt 45.

[0032] In this embodiment, by providing the auxiliary adjusting support 42, the second adjusting bolt 45 and the second adjusting bolt platform 44, and threadedly connecting the second adjusting bolt 45 to the second adjusting bolt platform 44 and the auxiliary clamping slider 41, when the second adjusting bolt 45 is rotated, the position of the boosting seat 48 on the auxiliary clamping slider 41 can be adjusted, thereby adjusting the fixing position of the pipe.

[0033] The working principle and usage process of the present invention: After the present invention is installed, when the bending radius of the pipe is small and stretch bending is required, the clamping die is connected to the first clamping die base 13, the second clamping die base 19 and the reel die base 23 through the main clamping dovetail key 24. When the bending of the pipe is large and roll bending is required, the main clamping reel die base 25 can be used to replace the clamping die and connect to the first clamping die base 13, the second clamping die base 19 and the reel die base 23. At the same time, when the bending radius is small, the pushing plate 55 can be used to connect to the guiding die, and stretch bending is performed through the pushing oil cylinder 49. When the bending radius of the pipe is large, the auxiliary reel base 61 can be used to replace the guiding die and connect to the pushing plate 55, and at the same time, the oil cylinder controlling the stretching layer does not act, and roll bending is performed.

[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An interchangeable device for stretch bending and roll bending in a pipe bender, characterized in that: It includes a main clamping die assembly (1), a main clamping die positioning assembly (2), a core winding assembly (3), an auxiliary clamping die assembly (4), an auxiliary clamping die group (5) and an auxiliary winding wheel assembly (6); the main clamping die assembly (1) includes a machine body (11), a clamping die seat lock block (12), a first clamping die seat (13), a support key (14), a first adjusting bolt platform (15) and a second clamping die seat (19). The clamping die seat lock block (12) is fixedly connected to the machine body (11), and the clamping die seat lock block (12) is located on one side of the machine body (11). The support key (14) is slidably connected to the clamping die seat lock block (12), and the support key (14) is located on the side of the clamping die seat lock block (12) away from the machine body (11). The first clamping die seat (13) is fixedly connected to the support key (14), and the first clamping die seat (13) is located on the side of the support key (14) away from the clamping die seat lock block (12). The first adjusting bolt platform (15) is fixedly connected to the first clamping die seat (13), and the first adjusting bolt platform (15) is located on one side of the first clamping die seat (13). The second clamping die seat (19) is fixedly connected to the first clamping die seat (13), and the second clamping die seat (19) is located at one end of the first clamping die seat (13) away from the support key (14); the main clamping die positioning assembly (2) includes a main stop block (21), a tooth rod (22), a winding wheel die seat (23) and a main clamping dovetail key (24). There are two main stop blocks (21), and the two main stop blocks (21) are respectively fixedly connected to the first clamping die seat (13) and the second clamping die seat (19). The main stop block (21) is located on one side of the second clamping die seat (19). The tooth rod (22) is fixedly connected to the main stop block (21), and the tooth rod (22) is located on the side of the main stop block (21) away from the first clamping die seat (13). The winding wheel die seat (23) is fixedly connected to the second clamping die seat (19), and the winding wheel die seat (23) is located on the side of the second clamping die seat (19) away from the first clamping die seat (13). There are three main clamping dovetail keys (24), and the three main clamping dovetail keys (24) are respectively fixedly connected to the first clamping die seat (13), the second clamping die seat (19) and the winding wheel die seat (23). The main clamping dovetail key (24) is located on the side of the first clamping die seat (13) away from the first adjusting bolt platform (15);The main clamping die positioning assembly (2) further includes a main clamping reel die base (25), a main pressing block (26), a first bearing (27) and a reel core shaft (28). The main clamping reel die base (25) is detachably connected to the main clamping dovetail key (24), and the main clamping reel die base (25) is located on the side of the main clamping dovetail key (24) away from the reel die base (23). The main pressing block (26) is fixedly connected to the main clamping reel die base (25), and the main pressing block (26) is located on the side of the main clamping reel die base (25) away from the machine body (11). The reel core shaft (28) is fixedly connected to the main clamping reel die base (25), and the reel core shaft (28) is sleeved in the inner cavity of the main clamping reel die base (25). The first bearing (27) is fixedly connected to the reel core shaft (28), and the reel core shaft (28) is sleeved on the outer side of the first bearing (27). The main clamping die assembly (1) further includes an adjusting support (16), a first adjusting bolt (17) and a first adjusting nut (18). The adjusting support (16) is fixedly connected to the clamping die base lock block (12), and the adjusting support (16) is located on the side of the first adjusting bolt platform (15) away from the clamping die base lock block (12). The first adjusting bolt (17) is threadedly connected to the adjusting support (16) and the first adjusting bolt platform (15), and the first adjusting bolt (17) penetrates through the adjusting support (16) and extends into the inner cavity of the first adjusting bolt platform (15). The first adjusting nut (18) is threadedly connected to the first adjusting bolt (17), and the first adjusting nut (18) is located on the side of the second clamping die base (19) away from the first adjusting bolt platform (15).; 2. The interchangeable device for stretch bending and roll bending in a tube bender according to claim 1, characterized in that: The core component (3) includes a second bearing (31), a third bearing (32), a wheel die positioning key (33), a die positioning member (34), and a die seat (35). The second bearing (31) is fixedly connected to the core wheel shaft (28), and the second bearing (31) is located on the side of the first bearing (27) away from the main clamping wheel die seat (25). The third bearing (32) is fixedly connected to the core wheel shaft (28), and the third bearing (32) is located on the side of the second bearing (31) away from the first bearing (27). The die seat (35) is rotatably connected to the machine body (11), and the die seat (35) is located on one side of the second bearing (31). The die positioning member (34) is fixedly connected to the die seat (35), and the die positioning member (34) is located on the side of the die seat (35) away from the machine body (11). The wheel die positioning key (33) is fixedly connected to the die positioning member (34), and the wheel die positioning key (33) is located on the side of the die positioning member (34) away from the die seat (35).

3. The interchangeable device for stretch bending and roll bending in a pipe bender according to claim 2, characterized in that: The auxiliary clamping die component (4) includes an auxiliary clamping slider (41), an auxiliary machine base (46), an auxiliary clamping lock block (47), a boosting seat (48), and a boosting oil cylinder (49). The auxiliary machine base (46) is slidably connected to the machine body (11), and the auxiliary machine base (46) is located on one side of the machine body (11). The auxiliary clamping slider (41) is slidably connected to the auxiliary machine base (46), and the auxiliary clamping slider (41) is located on the side of the auxiliary machine base (46) away from the machine body (11). The auxiliary clamping lock block (47) is fixedly connected to the auxiliary clamping slider (41), and the auxiliary clamping lock block (47) is located on the side of the auxiliary clamping slider (41) away from the auxiliary machine base (46). The boosting seat (48) is fixedly connected to the auxiliary clamping lock block (47), and the boosting seat (48) is located on the side of the auxiliary clamping lock block (47) away from the auxiliary clamping slider (41). The boosting oil cylinder (49) is fixedly connected to the boosting seat (48), and the boosting oil cylinder (49) is located in the inner cavity of the boosting seat (48).

4. The interchange device for stretch bending and roll bending in a tube bender according to claim 3, characterized in that: The auxiliary clamping module (5) includes a backing plate (51), a pushing die sleeve insert bar (52), a pushing die sleeve middle insert bar (53), a pushing plate fixing block (54), a pushing plate (55), a push rod positioning key (56), a boosting dovetail block (57) and an adjusting block (58). The backing plate (51) is fixedly connected to the boosting seat (48), and the backing plate (51) is located on one side wall of the boosting seat (48). The pushing die sleeve middle insert bar (53) is fixedly connected to the backing plate (51), and there are two pushing die sleeve insert bars (52). Both of the two pushing die sleeve insert bars (52) are located on the side of the backing plate (51) away from the boosting seat (48). The pushing die sleeve middle insert bar (53) is slidably connected to the backing plate (51), and the pushing die sleeve middle insert bar (53) is located between the two pushing die sleeve insert bars (52). The pushing plate (55) is fixedly connected to the pushing die sleeve middle insert bar (53), and the pushing plate (55) is located on the side of the pushing die sleeve middle insert bar (53) away from the backing plate (51). The pushing plate (55) is slidably connected to the pushing die sleeve insert bar (52). The boosting dovetail block (57) is slidably connected to the pushing plate (55), and the boosting dovetail block (57) is located on the side of the pushing plate (55) away from the pushing die sleeve middle insert bar (53). The push rod positioning key (56) is detachably connected to the pushing plate (55), and the push rod positioning key (56) is located on one side of the boosting dovetail block (57). The adjusting block (58) is fixedly connected to the boosting dovetail block (57), and the adjusting block (58) is located on the side of the boosting dovetail block (57) away from the pushing plate (55). The pushing plate fixing block (54) is fixedly connected to the pushing oil cylinder (49) and the pushing die sleeve middle insert bar (53), and the pushing plate fixing block (54) is located at the output end of the pushing oil cylinder (49).

5. The interchange device for stretch bending and roll bending in a tube bender according to claim 4, characterized in that: The auxiliary winding wheel assembly (6) includes an auxiliary winding wheel seat (61), an adjustment seat (62), a fourth bearing (63), a fifth bearing (64), an auxiliary winding core shaft (65) and an auxiliary pressing block (66). The auxiliary winding wheel seat (61) is detachably connected to the boosting dovetail block (57), and the auxiliary winding wheel seat (61) is located on the side of the boosting dovetail block (57) away from the pushing plate (55). The adjustment seat (62) is fixedly connected to the auxiliary winding wheel seat (61), and the adjustment seat (62) is located on one side of the auxiliary winding wheel seat (61). Both the fourth bearing (63) and the fifth bearing (64) are fixedly connected to the auxiliary winding wheel seat (61), and both the fourth bearing (63) and the fifth bearing (64) are sleeved in the inner cavity of the auxiliary winding wheel seat (61). The auxiliary winding core shaft (65) is fixedly connected to the fifth bearing (64) and the fourth bearing (63), and the auxiliary winding core shaft (65) is sleeved in the inner cavities of the fourth bearing (63) and the fifth bearing (64). The auxiliary pressing block (66) is fixedly connected to the auxiliary winding wheel seat (61), and the auxiliary pressing block (66) is located on one side of the fourth bearing (63).

6. The interchangeable device for stretch bending and roll bending in a tube bender according to claim 3, characterized in that: The main clamping die assembly (1) further includes an auxiliary adjustment support (42), a second adjustment nut (43), a second adjustment bolt platform (44) and a second adjustment bolt (45). The auxiliary adjustment support (42) is fixedly connected to the auxiliary machine base (46), and the auxiliary adjustment support (42) is located between the auxiliary machine base (46) and the auxiliary clamping slider (41). The second adjustment bolt platform (44) is fixedly connected to the auxiliary adjustment support (42), and the second adjustment bolt platform (44) is located on one side of the auxiliary adjustment support (42). The second adjustment bolt (45) is threadedly connected to the second adjustment bolt platform (44) and the auxiliary clamping slider (41), and the second adjustment bolt (45) penetrates through the auxiliary adjustment support (42) and extends to one side of the auxiliary adjustment support (42). The second adjustment nut (43) is threadedly connected to the second adjustment bolt (45), and the second adjustment nut (43) is sleeved on the outer side of the second adjustment bolt (45).

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