Pipe fitting clamping mechanism of pipe bending machine

Abstract

The utility model discloses a pipe fitting clamping mechanism of a pipe bending machine. The pipe fitting clamping mechanism comprises a base, a rotating shaft is arranged on the base, a working table is connected to the rotating shaft in a rotating mode, an installation frame is arranged on the base, a telescopic rod is arranged on the installation frame, a core rod is arranged at the output end of the telescopic rod, a wheel die is arranged on the rotating shaft, and the working table is connected with the wheel die in a rotating mode. A wheel die is arranged on the workbench, an anti-wrinkling die is fixedly connected to the wheel die, a splicing block is arranged on the wheel die, a guide die is buckled on the anti-wrinkling die, a clamping die is buckled on the splicing block, a supporting frame is arranged on the workbench, and a clamping assembly is arranged on the supporting frame. The clamping assembly and the core rod are arranged on the supporting frame and the base respectively, the inner diameters of the two ends of the pipe are supported at the same time, the stability of the pipe is improved, the bending radius of the pipe is increased, the deformation amount of the pipe in the bending process is effectively reduced, and the defects of distortion, creases and the like caused by uneven stress of a pipe opening are overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe bending machine clamping, in particular to a pipe bending machine pipe fitting clamping mechanism. Background Art

[0002] A pipe bender is a crucial piece of equipment in modern machinery manufacturing, specializing in the production of efficient and precise pipe bending equipment. By precisely controlling parameters such as the bending angle and radius, CNC pipe benders achieve precise shaping of pipes, meeting the diverse needs of various industries for pipe bending products.

[0003] In fields such as construction, elbows are mostly used to connect pipes and adjust the direction of pipes. Therefore, they have certain requirements for the sealing performance of the curved parts and have different technical requirements from other corresponding fields.

[0004] However, there are some problems with the existing technology: when the pipe bending machine is working, when the pipe diameter is large and the pipe length is short, a large amount of stress generated during bending will be concentrated at the pipe mouth, causing the pipe mouth to deform, resulting in the risk of leakage and breakage after the use of the bent pipe. Therefore, we propose a pipe clamping mechanism for a pipe bending machine. Utility Model Content

[0005] In response to the problems existing in the prior art, the purpose of the present utility model is to provide a pipe clamping mechanism for a pipe bending machine. By arranging a clamping assembly and a core rod on the support frame and the base respectively, the inner diameters of both ends of the pipe are supported at the same time to increase the stability of the pipe, improve the bending radius of the pipe, and effectively reduce the deformation of the pipe during the bending process, thereby avoiding defects such as twisting and creases on the pipe mouth due to uneven force.

[0006] The utility model is implemented as follows: a pipe clamping mechanism for a pipe bending machine comprises a base, a rotating shaft is provided on the base, a workbench is rotatably connected to the rotating shaft, a mounting frame is provided on the base, a telescopic rod is provided on the mounting frame, a core rod is provided on the output end of the telescopic rod, a wheel mold is provided on the rotating shaft, an anti-wrinkle mold is fixedly connected to the wheel mold, a puzzle is provided on the wheel mold, a guide mold is buckled on the anti-wrinkle mold, a clamping mold is buckled on the puzzle, a support frame is provided on the workbench, a clamping assembly is provided on the support frame, and transmission assemblies are provided on both the base and the workbench.

[0007] Optionally, a hollow area is formed between the block and the clamping mold, and the hollow area is used to place pipes. A guide rail is fixedly connected to the workbench, and the support frame is slidably connected to the guide rail.

[0008] Optionally, a slide rail is fixedly connected to the guide die, a connecting seat is slidably connected to the slide rail, a cylinder is fixedly connected to the connecting seat, and an output end of the cylinder is fixedly connected to the clamping die.

[0009] Optionally, the clamping assembly includes a hydraulic rod, which is fixedly connected to a support frame, a sleeve is fixedly connected to the support frame, a clamp is provided inside the sleeve, and a column head is fixedly connected to the output end of the hydraulic rod, and the column head moves inside the clamp.

[0010] Optionally, a connecting rod is slidably connected to the clamping barrel, one end of the connecting rod is fixedly connected to a clamping claw, the other end of the connecting rod is fixedly connected to a connecting block, a spring is sleeved on the outer side of the connecting rod, one end of the spring is fixedly connected to the clamping claw, the other end of the spring is fixedly connected to the clamping barrel, and the connecting block is arranged corresponding to the column head.

[0011] Optionally, the transmission assembly includes a threaded seat and a threaded rod, the threaded seat and the threaded rod are rotationally connected, the number of the transmission assembly is two groups, and the two threaded rods are rotationally connected to the support frame and the connecting seat respectively.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. By arranging the clamping assembly and the mandrel on the support frame and the base respectively, the inner diameter of both ends of the pipe are supported at the same time to increase the stability of the pipe, increase the bending radius of the pipe, and effectively reduce the deformation of the pipe during the bending process, avoiding defects such as distortion and creases at the pipe mouth due to uneven force.

[0014] 2. By setting up the clamping barrel, connecting rod, clamping claws, clamping barrel and other structures, when clamping, the output end of the hydraulic rod extends, driving the column head to move in the clamping barrel. When the column head contacts the connecting block, the connecting block is propped up outward, driving the clamping claws to move outward, thereby achieving support and fixation of the pipe. When the column head retracts, the spring automatically resets the clamping claws through elastic force, so that the clamping assembly can adapt to pipes of different diameters.

[0015] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure provided by the utility model;

[0017] Figure 2 This is a schematic diagram of the workbench structure provided by the utility model;

[0018] Figure 3 yes Figure 2 A magnified schematic diagram of part A;

[0019] Figure 4 This is a schematic diagram of the clamping structure provided by the utility model;

[0020] Figure 5 This is a schematic diagram of the wheel mold structure provided by the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the clamping assembly provided by the utility model;

[0022] Figure 7 yes Figure 6 An enlarged schematic diagram of part B.

[0023] In the figure: 1. Base; 11. Rotating shaft; 12. Workbench; 13. Mounting frame; 14. Telescopic rod; 15. Mandrel; 2. Wheel mold; 21. Anti-wrinkle mold; 22. Block; 23. Clamping mold; 24. Guide mold; 3. Support frame; 31. Guide rail; 32. Slide rail; 33. Connecting seat; 34. Cylinder; 4. Clamping assembly; 41. Hydraulic rod; 42. Sleeve; 43. Clamping cylinder; 44. Connecting rod; 45. Clamping claw; 46. Connecting block; 47. Spring; 48. Column head; 5. Transmission assembly; 51. Threaded seat; 52. Threaded rod. DETAILED DESCRIPTION

[0024] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0025] like Figures 1 to 7 As shown, an embodiment of the utility model provides a pipe clamping mechanism for a pipe bending machine, which includes a base 1, a rotating shaft 11 is provided on the base 1, a workbench 12 is rotatably connected to the rotating shaft 11, a mounting frame 13 is provided on the base 1, a telescopic rod 14 is provided on the mounting frame 13, a core rod 15 is provided on the output end of the telescopic rod 14, a wheel mold 2 is provided on the rotating shaft 11, an anti-wrinkle mold 21 is fixedly connected to the wheel mold 2, a piece 22 is provided on the wheel mold 2, a guide mold 24 is buckled on the anti-wrinkle mold 21, a clamping mold 23 is buckled on the piece 22, a support frame 3 is provided on the workbench 12, a clamping assembly 4 is provided on the support frame 3, and a transmission assembly 5 is provided on both the base 1 and the workbench 12.

[0026] Furthermore, during processing, the pipe is put on the clamping assembly 4, and the pipe is close to the clamping die 23 and the guide die 24, the equipment is started, and the threaded rod 52 in the transmission assembly 5 rotates, driving the support frame 3 and the connecting seat 33 to move, thereby driving the clamping die 23 and the guide die 24 to be close to the puzzle block 22 and the guide die 24 respectively, thereby radially limiting the pipe, and the hydraulic rod 41 drives the column head 48 forward, and pushes the clamping jaws 45 to clamp the pipe mouth of the pipe through the connecting block 46. After the clamping jaws 45 clamp the pipe, the hydraulic rod 41 continues to move, and drives the pipe to move in the hollow area through the clamping cylinder 43 until the core rod 15 is inserted into the pipe, thereby realizing the limitation of both ends of the pipe. The two ends of the pipe are limited and supported by the clamping assembly 4 and the core rod 15 respectively, and then the workbench 12 rotates, and the wheel die 2 rotates synchronously, driving the puzzle block 22 to rotate, thereby pulling the pipe to rotate along the wheel die 2, thereby realizing the bending of the pipe.

[0027] Specifically, a hollow area is formed between the block 22 and the clamping die 23, and the hollow area is used to place the pipe.

[0028] Furthermore, by providing the block 22 , the clamping die 23 , the anti-wrinkle die 21 and the guide die 24 , the pipe is allowed to be placed in the hollow area between the block 22 and the clamping die 23 .

[0029] Specifically, a guide rail 31 is fixedly connected to the workbench 12, the support frame 3 is slidably connected to the guide rail 31, a slide rail 32 is fixedly connected to the guide mold 24, a connecting seat 33 is slidably connected to the slide rail 32, a cylinder 34 is fixedly connected to the connecting seat 33, and the output end of the cylinder 34 is fixedly connected to the clamping mold 23.

[0030] Furthermore, when the pipe is put on the clamping assembly 4, the transmission assembly 5 drives the support frame 3 and the connecting seat 33 to move through the threaded transmission of the threaded rod 52 and the threaded seat 51, thereby moving the clamping mold 23 and the guide mold 24, and respectively engaging with the assembly block 22 and the anti-wrinkle mold 21.

[0031] Specifically, the clamping assembly 4 includes a hydraulic rod 41, which is fixedly connected to the support frame 3, and a sleeve 42 is fixedly connected to the support frame 3. A clamp 43 is arranged inside the sleeve 42, and a column head 48 is fixedly connected to the output end of the hydraulic rod 41. The column head 48 moves inside the clamp 43, and a connecting rod 44 is slidably connected to the clamp 43. One end of the connecting rod 44 is fixedly connected to the clamping claw 45, and the other end of the connecting rod 44 is fixedly connected to the connecting block 46. A spring 47 is provided on the outer side of the connecting rod 44, one end of the spring 47 is fixedly connected to the clamping claw 45, and the other end of the spring 47 is fixedly connected to the clamp 43, and the connecting block 46 is arranged corresponding to the column head 48.

[0032] Furthermore, the clamping assembly 4 is the core component of the device and is primarily composed of a hydraulic rod 41, a support frame 3, a sleeve 42, a clamping sleeve 43, a stud 48, a connecting rod 44, a clamping jaw 45, a connecting block 46, and a spring 47. The hydraulic rod 41 is fixedly connected to the support frame 3, with its output end connected to the stud 48, which is able to move freely within the clamping sleeve 43. The clamping sleeve 43 is fixed within the sleeve 42, while the connecting rod 44 is slidably connected to the clamping sleeve 43, with one end connected to the clamping jaw 45 and the other end fixed to the connecting block 46. A spring 47 is provided on the outside of the spring, with both ends of the spring 47 fixedly connected to the clamping jaw 45 and the clamping sleeve 43, respectively. The connecting block 46 is arranged in correspondence with the stud 48 to ensure that when the hydraulic rod 41 is operating, the stud 48 can accurately push the connecting block 46.

[0033] Furthermore, by setting the clamping assembly 4, when working, the hydraulic rod 41 drives the column head 48 forward, and pushes the clamping jaws 45 to clamp the pipe mouth of the pipe through the connecting block 46. After the clamping jaws 45 clamp the pipe, the hydraulic rod 41 continues to move, and drives the pipe to move in the hollow area through the clamping barrel 43 until the core rod 15 is inserted into the pipe, thereby limiting the two ends of the pipe, which not only ensures the stable clamping of the pipe, but also realizes the precise movement of the pipe in the device.

[0034] Specifically, the transmission assembly 5 includes a threaded seat 51 and a threaded rod 52, and the threaded seat 51 and the threaded rod 52 are rotationally connected. There are two groups of transmission assemblies 5, and the two threaded rods 52 are rotationally connected to the support frame 3 and the connecting seat 33 respectively.

[0035] Working principle: The pipe is put on the clamping assembly 4, and the pipe is close to the clamping die 23 and the guide die 24, the equipment is started, the threaded rod 52 in the transmission assembly 5 rotates, driving the support frame 3 and the connecting seat 33 to move, thereby driving the clamping die 23 and the guide die 24 to respectively close to the puzzle block 22 and the guide die 24, thereby radially limiting the pipe, the hydraulic rod 41 drives the column head 48 forward, and pushes the clamping jaws 45 to clamp the pipe mouth of the pipe through the connecting block 46. After the clamping jaws 45 clamp the pipe, the hydraulic rod 41 continues to move, and drives the pipe to move in the hollow area through the clamping cylinder 43 until the core rod 15 is inserted into the pipe, thereby realizing the limitation of both ends of the pipe. The two ends of the pipe are limited and supported by the clamping assembly 4 and the core rod 15 respectively, and then the workbench 12 rotates, and the wheel die 2 rotates synchronously, driving the puzzle block 22 to rotate, thereby pulling the pipe to rotate along the wheel die 2 to realize the bending of the pipe.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe clamping mechanism for a pipe bender, comprising a base (1), characterized in that: The base (1) is provided with a rotating shaft (11), a workbench (12) is rotatably connected to the rotating shaft (11), a mounting frame (13) is provided on the base (1), a telescopic rod (14) is provided on the mounting frame (13), a core rod (15) is provided on the output end of the telescopic rod (14), a wheel mold (2) is provided on the rotating shaft (11), an anti-wrinkle mold (21) is fixedly connected to the wheel mold (2), a piece (22) is provided on the wheel mold (2), a guide mold (24) is fastened to the anti-wrinkle mold (21), a clamping mold (23) is fastened to the piece (22), a support frame (3) is provided on the workbench (12), a clamping assembly (4) is provided on the support frame (3), and a transmission assembly (5) is provided on both the base (1) and the workbench (12).

2. The pipe clamping mechanism for a pipe bender according to claim 1, characterized in that: A hollow area is formed between the block (22) and the clamping die (23), and the hollow area is used to place pipes. A guide rail (31) is fixedly connected to the workbench (12), and the support frame (3) is slidably connected to the guide rail (31).

3. The pipe clamping mechanism for a pipe bender according to claim 1, characterized in that: The guide mold (24) is fixedly connected to a slide rail (32), the slide rail (32) is slidably connected to a connecting seat (33), the connecting seat (33) is fixedly connected to a cylinder (34), and the output end of the cylinder (34) is fixedly connected to the clamping mold (23).

4. The pipe clamping mechanism for a pipe bender according to claim 1, characterized in that: The clamping assembly (4) includes a hydraulic rod (41), the hydraulic rod (41) is fixedly connected to the support frame (3), a sleeve (42) is fixedly connected to the support frame (3), a clamping cylinder (43) is provided inside the sleeve (42), and a column head (48) is fixedly connected to the output end of the hydraulic rod (41), and the column head (48) moves inside the clamping cylinder (43).

5. The pipe clamping mechanism for a pipe bender according to claim 4, characterized in that: The clamping cylinder (43) is slidably connected to a connecting rod (44), one end of the connecting rod (44) is fixedly connected to a clamping claw (45), and the other end of the connecting rod (44) is fixedly connected to a connecting block (46). A spring (47) is sleeved on the outer side of the connecting rod (44), one end of the spring (47) is fixedly connected to the clamping claw (45), and the other end of the spring (47) is fixedly connected to the clamping cylinder (43), and the connecting block (46) is correspondingly arranged with the column head (48).

6. The pipe clamping mechanism for a pipe bender according to claim 1, characterized in that: The transmission assembly (5) comprises a threaded seat (51) and a threaded rod (52), wherein the threaded seat (51) and the threaded rod (52) are rotatably connected. The number of the transmission assembly (5) is two groups, and the two threaded rods (52) are rotatably connected to the support frame (3) and the connecting seat (33), respectively.

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