CN118477924A - Automatic pipe bending machine capable of feeding with follow-up and feeding method thereof - Google Patents
Automatic pipe bending machine capable of feeding with follow-up and feeding method thereof Download PDFInfo
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- CN118477924A CN118477924A CN202410952017.0A CN202410952017A CN118477924A CN 118477924 A CN118477924 A CN 118477924A CN 202410952017 A CN202410952017 A CN 202410952017A CN 118477924 A CN118477924 A CN 118477924A
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- 238000005452 bending Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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Abstract
The invention is suitable for the technical field of pipe bending machines, and provides an automatic pipe bending machine capable of feeding with follow-up and a feeding method thereof, comprising a frame, wherein a workbench is arranged at the top of the frame; the pushing unit comprises a pushing base, a pushing frame and a flexible feeding assembly, wherein the pushing base is slidably arranged at the top of the workbench through a pushing sliding rail, the pushing frame is arranged at the top of the pushing base, and the flexible feeding assembly penetrates through the workbench. The device has solved automatic bending machine material loading in-process and has produced longer waiting clearance, is in unsettled state when reducing the efficiency of bending processing and bending the processing of return bend end, because lack support atress easily produces vibrations to influence the precision of bending processing and the problem of finished product quality, reached at return bend tip in-process of bending, adjusted the return bend tip, avoided the return bend vibrations to influence processing, incessantly carries out a set of return bend material loading simultaneously, improves machining efficiency's effect.
Description
Technical Field
The invention relates to the technical field of pipe bending machines, in particular to an automatic pipe bending machine capable of feeding in a follow-up mode and a feeding method thereof.
Background
The pipe bending machine is generally divided into hydraulic and numerical control, the hydraulic pipe bending machine is driven by pure hydraulic pressure, and the numerical control pipe bending machine is called an automatic pipe bending machine, and a PLC control system is added on the basis of the hydraulic pipe bending machine, so that digital information control is realized. The numerical control pipe bending machine is most widely applied, and relates to various metal pipe bending machines on automobiles, airplanes and trains, various pipe bending machines of medical production equipment, various pipe bending machines used on power generation boiler systems and the like.
The existing automatic pipe bending machine can realize the feeding of the bent pipe according to different bending positions in the bending process. But only after the first group of bent pipes are machined, the new bent pipes can be inserted into the pushing clamp after the first group of bent pipes are taken down, and the new group of bent pipes are fed. Therefore, the automatic pipe bending machine can generate longer waiting clearance in the bending process, and the bending efficiency is reduced.
Meanwhile, when the tail end of the bent pipe is separated from the inside of the pushing clamp head to carry out the last bending processing, the end part of the bent pipe is in a suspended state, and vibration is easily generated due to lack of support and stress in the bending processing process, so that the precision of the bending processing and the quality of a finished product are affected.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide the automatic pipe bending machine capable of feeding with follow-up and improving the processing efficiency and the feeding method thereof, wherein the pipe bending end is adjusted in the pipe bending process, the pipe bending vibration is avoided to influence the processing, and meanwhile, a new group of pipe bending feeding is continuously carried out.
In order to achieve the above purpose, the present invention provides the following technical solutions:
An automatic pipe bending machine capable of feeding with follow-up comprises a frame, wherein a workbench is arranged at the top of the frame; the pushing unit comprises a pushing base, a pushing frame and a flexible feeding assembly, wherein the pushing base is slidably arranged at the top of the workbench through a pushing sliding rail, the pushing frame is arranged at the top of the pushing base, and the flexible feeding assembly penetrates through the workbench; the follow-up feeding unit comprises a feeding sleeve penetrating through the pushing frame, a first feeding component arranged at one end of the feeding sleeve and a second feeding component arranged at the other end of the feeding sleeve; the sleeving unit comprises a telescopic component arranged at the top of the pushing base and a sleeving component connected with the end part of the telescopic component; the pipe bending unit comprises a guide die assembly capable of guiding the pipe bending, a wheel die assembly arranged at the end part of the frame and a swing arm assembly arranged on the side wall of the frame; the abutting core rod unit is arranged at one end, far away from the bent pipe unit, of the frame and comprises an abutting sliding groove, an abutting installation frame, an abutting air cylinder and an abutting piece, wherein the abutting sliding groove is arranged at the top of the workbench, the abutting installation frame is slidably arranged at the top of the abutting sliding groove, the abutting air cylinder penetrates through the abutting installation frame, and the abutting piece is connected with the abutting air cylinder; wherein, follow-up feeding unit is inside to be provided with the return bend, the return bend runs through the socket joint subassembly setting.
The invention is further provided with: the pushing slide rails are symmetrically arranged into two groups relative to the longitudinal axis of the workbench, a pushing frame is arranged at the center of the top of the pushing base along the longitudinal direction of the rack, and one end, close to the sleeving unit, of the pushing frame is rotationally connected with a swinging assembly; the flexible feeding assembly is arranged at one end, close to the bent pipe unit, of the pushing frame, and two groups of flexible feeding assemblies are arranged along the length direction of the workbench.
The invention is further provided with: the flexible feeding assembly comprises a flexible guide roller capable of guiding the bent pipe and a lifting cylinder arranged at the bottom of the workbench, a through hole with the inner diameter being matched with the outer diameter of the feeding sleeve is formed in the pushing frame in a penetrating mode, and a rotating assembly capable of driving the bent pipe to rotate is arranged at the end portion, far away from the flexible feeding assembly, of one side of the pushing frame.
The invention is further provided with: the feeding sleeve is of a hollow cylindrical structure with the inner diameter being matched with the outer diameter of the bent pipe, a first feeding component is sleeved at one end of the feeding sleeve, which is close to the abutting core rod unit, and a second feeding component is sleeved at one end of the feeding sleeve, which is close to the sleeving unit; the first feeding assembly comprises a first feeding sleeve sleeved on the outer side wall of the feeding sleeve, a first chuck is inserted into the first feeding sleeve, and one end, far away from the feeding sleeve, of the first chuck is connected with a plurality of groups of first clamping jaws in a rotating mode.
The invention is further provided with: the second feeding assembly comprises a second feeding sleeve sleeved on the outer side wall of the feeding sleeve, a second chuck is inserted into the second feeding sleeve, and a plurality of groups of second clamping jaws are rotatably connected to one end, away from the feeding sleeve, of the second chuck; the first clamping jaw ends of the multiple groups are all arranged to be of arc structures with the inner walls being matched with the shape of the bent pipe, and the second clamping jaw ends of the multiple groups are all arranged to be of arc structures with the inner walls being matched with the shape of the bent pipe.
Through adopting above-mentioned technical scheme, feeding sleeve both ends set up first feeding subassembly and second feeding subassembly, and during return bend material loading, from inside entering feeding sleeve of first feeding subassembly is inside, wears out from second feeding subassembly again, and first feeding subassembly and second feeding subassembly homoenergetic press from both sides tight or relax the return bend.
The invention is further provided with: the telescopic component comprises a mounting frame mounted on one side of the pushing frame, the mounting frame is mounted on the top of the pushing frame, a telescopic cylinder is mounted on the top of the mounting frame, the output end of the telescopic cylinder is connected with a sliding connecting rod, and one end, far away from the telescopic cylinder, of the sliding connecting rod is connected with a sleeving component.
The invention is further provided with: the connecting plate is far away from the rack ring that the ring structure was installed in the rotation of flexible subassembly one side is kept away from to the connecting plate including being connected with the sliding connection pole, the rack ring is kept away from connecting plate one side and is installed the ring that cup joints of shape and adaptation with it, cup joint and encircle and be provided with the multiunit on the ring and can cup joint the module to return bend lateral wall butt.
Through adopting above-mentioned technical scheme, the rack ring can drive the bell and spigot joint ring according to the change of return bend bending angle in step and rotate, cup joints the flexible laminating that can realize with return bend tip lateral wall of module, is convenient for bend the in-process at the return bend, provides the support for the return bend from the return bend tip.
The invention is further provided with: the wheel die assembly is installed at the end part of one side of the frame far away from the abutting core rod unit, and the bottom of the wheel die assembly is rotationally connected with a swing arm assembly capable of bending the bent pipe, and the guide die assembly is installed at one side of the wheel die assembly far away from the swing arm assembly and is arranged along the length direction of the workbench.
The invention is further provided with: the butt spout sets up along workstation width direction, the butt piece sets up at butt mounting bracket and is close to follow-up feeding unit one side lateral wall, and set up to the cylinder structure with return bend shape adaptation.
The feeding method of the automatic pipe bender capable of feeding in a follow-up manner comprises the following steps of:
S1, sliding a pushing base to a side close to the bent pipe unit, and inserting a first group of bent pipes into a first feeding assembly;
S2, the abutting piece is abutted with the first group of bent pipes, and the pushing base slides to the side close to the abutting core rod unit, so that the first group of bent pipes sequentially pass through the first feeding assembly, the feeding sleeve, the second feeding assembly and the sleeving assembly;
s3, the first feeding assembly and the second feeding assembly are tightened, and the pushing base slides to one side close to the bent pipe unit, so that the first group of bent pipes enter the guide module assembly;
S4, the pushing base continues to slide towards one side close to the bent pipe unit, and the first group of bent pipes are bent under the cooperation of the wheel die assembly and the swing arm assembly;
S5, the first group of bent pipes are separated from the second feeding assembly, the second feeding assembly is kept in an open state, the telescopic assembly drives the sleeving assembly to move towards one side close to the bent pipe unit, and the end parts of the first group of bent pipes are sleeved;
s6, the first feeding assembly is opened, the second group of bent pipes are inserted into the first feeding assembly, the abutting piece abuts against the second group of bent pipes, the pushing base slides to the side close to the abutting core rod unit, and the second group of bent pipes sequentially penetrate through the first feeding assembly, the feeding sleeve and the second feeding assembly;
s7, the telescopic assembly drives the sleeve joint assembly to move to one side close to the second feeding assembly for resetting;
S8, continuously repeating feeding bending operation of the first group of bent pipes by the second group of bent pipes.
In summary, the present application includes at least one of the following beneficial technical effects:
1. Through set up first feeding subassembly and second feeding subassembly at feeding sleeve both ends for the in-process that first group return bend was worn out from second feeding subassembly is inside, can be with second group return bend 7 from first feeding subassembly grafting in feeding sleeve inside. Uninterrupted follow-up feeding of the first group of bent pipes and the second group of bent pipes is realized, so that waiting gaps of bent pipe units after bending are reduced, and the working efficiency of the device is improved.
2. The rack ring is arranged to drive the sleeve ring to rotate, so that the sleeve assembly can drive the bent pipe to synchronously adjust the rotation angle according to the change of the bending angle, and the bent pipe is ensured to be bent normally.
3. The telescopic sleeving module is attached to the outer side wall of the end part of the bent pipe, so that the sleeving assembly can be abutted to the end part of the bent pipe. In the bending process of the bent pipe, the bent pipe is supported from the end part of the bent pipe, so that vibration caused by stress in the bending process of the bent pipe is effectively avoided, and the bending processing precision and the quality of a finished product are affected.
Drawings
FIG. 1 is a schematic diagram of an automatic pipe bender capable of feeding with follow-up according to the present invention.
FIG. 2 is a schematic diagram of an exploded structure of the automatic pipe bender capable of feeding with follow-up according to the present invention.
Fig. 3 is a schematic structural diagram of a pushing unit in the present invention.
Fig. 4 is a partial cross-sectional view taken along section line A-A in fig. 1.
Fig. 5 is a schematic structural diagram of the follow-up feeding unit in the present invention.
Fig. 6 is a schematic diagram of an explosion structure of the follow-up feeding unit in the present invention.
Fig. 7 is a schematic diagram of feeding state of the follow-up feeding unit in the present invention.
Fig. 8 is a schematic structural view of the telescopic assembly according to the present invention.
Fig. 9 is a schematic structural diagram of a socket assembly according to the present invention.
Fig. 10 is a schematic diagram of an explosion structure of a socket assembly according to the present invention.
Fig. 11 is a schematic structural view of the pipe bending unit in the present invention.
FIG. 12 is a schematic view of another view of the elbow unit of the present invention.
Fig. 13 is a schematic structural view of an abutting mandrel unit in the present invention.
Reference numerals illustrate: 1. a frame; 11. a work table;
2. a pushing unit; 21. pushing a material sliding rail; 22. a pushing base; 23. a pushing frame; 24. a rotating assembly; 241. a rotating electric machine; 242. a rotating member; 25. a swing assembly; 251. a swing cylinder; 252. a swinging sleeve; 26. a flexible feed assembly; 261. a flexible guide roller; 262. a lifting cylinder;
3. A follow-up feeding unit; 31. a feeding sleeve; 32. a first feed assembly; 321. a first feed sleeve; 322. a first chuck; 323. a first jaw; 33. a second feeding assembly; 331. a second feed sleeve; 332. a second chuck; 333. a second jaw;
4. A sleeving unit; 41. a telescoping assembly; 411. a mounting frame; 412. a telescopic cylinder; 413. a sliding connecting rod; 414. a mounting block; 42. a socket assembly; 421. a connecting plate; 422. a sleeve joint ring; 423. a rack ring; 424. sleeving a motor; 425. a drive gear; 426. a guide roller; 427. a sleeving module; 4271. a telescopic rod; 4272. a buffer spring; 4273. an abutting plate;
5. a bent pipe unit; 51. a guide die assembly; 511. a guide die cylinder; 512. a guide die module; 513. a guide die slide rail; 514. a guide die groove; 52. a wheel mold assembly; 521. a wheel die mounting member; 522. a wheel mold rotating member; 523. wheel mold guide grooves; 53. a swing arm assembly; 531. swing arm frame; 532. a lifting roller; 533. an adjusting member;
6. Abutting the mandrel unit; 61. abutting against the chute; 62. abutting the mounting frame; 63. abutting the cylinder; 64. an abutment;
7. And (3) bending the pipe.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.
Referring to fig. 1-13, the present invention provides the following technical solutions:
Referring to fig. 1-7 and fig. 11-13, an embodiment of the present invention includes a frame 1, a pushing unit 2, a follow-up feeding unit 3, a bending unit 5, an abutting core rod unit 6 and a bending pipe 7. The frame 1 is arranged to be of a rectangular structure and is horizontally arranged, a workbench 11 is arranged at the top of the frame 1, and a working environment is provided for the whole device. One end of the top of the workbench 11 is provided with a core rod abutting unit 6, and the other end is provided with an elbow pipe unit 5. The top of the workbench 11 is provided with a pushing unit 2 in a sliding manner along the length direction, and the pushing unit 2 is provided with a follow-up feeding unit 3 in a penetrating manner. The bent pipe 7 is spliced into the follow-up feeding unit 3 under the cooperation of the abutting core rod unit 6, and the follow-up feeding unit 3 conveys the bent pipe 7 into the bent pipe unit 5 to finish bending processing in the sliding process of the follow-up feeding unit 2.
Referring to fig. 1-4, the pushing unit 2 includes two sets of pushing rails 21 symmetrically disposed along the length direction of the table 11, and a pushing base 22 is slidably mounted on top of the two sets of pushing rails 21. The pushing base 22 is rectangular in structure, and a pushing frame 23 is arranged at the top center of the pushing base along the length direction of the frame 1. The pushing frame 23 is provided with a through hole with an inner diameter matched with the outer diameter of the feeding sleeve 31 in a penetrating way, and the feeding sleeve 31 can be sleeved inside the pushing frame 23. The pushing frame 23 is close to one end of the sleeving unit 4 and is rotatably connected with a swinging component 25, and the swinging component 25 is arranged at the top of the pushing base 22 and is arranged on one side of the pushing frame 23. The swing assembly 25 comprises a swing cylinder 251 arranged on the side wall of the pushing frame 23 and a swing sleeve 252 rotatably sleeved at the end part of the pushing frame 23, and the swing cylinder 251 stretches and contracts to drive the swing sleeve 252 to rotate, so that the angle of the swing sleeve 252 is finely adjusted, and the feeding sleeve 31 inside the pushing frame 23 is ensured to be inserted reliably.
Referring to fig. 1-4, the flexible feeding assembly 26 is disposed at one end of the pushing frame 23 near the pipe bending unit 5, and two groups are disposed along the length direction of the workbench 11. Two groups of flexible feeding assemblies 26 are arranged throughout the workbench 11, and the flexible feeding assemblies 26 comprise flexible guide rollers 261 capable of guiding the bent pipe 7 and lifting cylinders 262 arranged at the bottom of the workbench 11. The lifting cylinder 262 stretches and contracts to drive the flexible guide roller 261 to move along the vertical direction, so that the bent pipe 7 is guided according to the height of the bent pipe 7, on one hand, the bent pipe 7 can smoothly enter the bent pipe unit 5 to complete bending, on the other hand, the flexible material of the lifting cylinder can be utilized to provide buffering, and vibration caused by stress of the bent pipe 7 is reduced. The end of the side, far away from the flexible feeding component 26, of the pushing frame 23 is provided with a rotating component 24 capable of driving the bent pipe 7 to rotate, and the rotating component 24 comprises a rotating motor 241 arranged at the top of the pushing frame 23 and a rotating piece 242 arranged on the side wall of the side, far away from the flexible feeding component 26, of the pushing frame 23. After the feeding sleeve 31 is inserted into the pushing frame 23, according to the change of the bending angle, the rotating motor 241 can drive the rotating piece 242 to rotate, synchronously drive the feeding sleeve 31 to rotate, and finally adjust the angle of the bent pipe 7.
Referring to fig. 1-2 and fig. 5-7, the follow-up feeding unit 3 includes a feeding sleeve 31 penetrating through the pushing frame 23, the feeding sleeve 31 is of a hollow cylindrical structure with an inner diameter adapted to an outer diameter of the elbow pipe 7, and the elbow pipe 7 can be inserted into the feeding sleeve 31 to complete feeding. The feeding sleeve 31 is sleeved with a first feeding component 32 near one end of the abutting core rod unit 6, and is sleeved with a second feeding component 33 near one end of the sleeving unit 4. When the bent pipe 7 is fed, the bent pipe 7 enters the feeding sleeve 31 from the inside of the first feeding assembly 32 and then passes out of the second feeding assembly 33, and the bent pipe 7 can be clamped or loosened by the first feeding assembly 32 and the second feeding assembly 33.
Referring to fig. 5-7, by providing a first feeding assembly 32 and a second feeding assembly 33 at both ends of the feeding sleeve 31, the first feeding assembly 32 and the second feeding assembly 33 can be opened or closed, respectively. So that the second set of elbows 7 can be inserted into the feeding sleeve 31 from the first feeding assembly 32 during the process of the first set of elbows 7 penetrating out from the second feeding assembly 33. Uninterrupted follow-up feeding of the first group of bent pipes 7 and the second group of bent pipes 7 is realized, so that waiting gaps after bending of the bent pipe units 5 are reduced, and the working efficiency of the device is improved.
Referring to fig. 5-7, the first feeding assembly 32 includes a first feeding sleeve 321 sleeved on the outer sidewall of the feeding sleeve 31, where the first feeding sleeve 321 is configured as a hollow cylinder structure with an inner diameter adapted to the outer diameter of the feeding sleeve 31. The first feeding sleeve 321 is inserted with a first chuck 322, and one end of the first chuck 322 far away from the feeding sleeve 31 is rotatably connected with a plurality of groups of first clamping jaws 323. The ends of the plurality of groups of first clamping claws 323 are all arranged to be arc structures with the inner walls being matched with the shape of the bent pipe 7, the plurality of groups of first clamping claws 323 rotate relative to the first clamping chuck 322, and clamping or loosening of the bent pipe 7 can be achieved. The second feeding assembly 33 comprises a second feeding sleeve 331 sleeved on the outer side wall of the feeding sleeve 31, and the second feeding sleeve 331 is of a hollow cylindrical structure with an inner diameter adapted to the outer diameter of the feeding sleeve 31. The second feeding sleeve 331 is inserted with a second chuck 332, and a plurality of groups of second clamping jaws 333 are rotatably connected to one end of the second chuck 332 away from the feeding sleeve 31. The ends of the second clamping jaws 333 are all provided with arc structures with the inner walls being matched with the shape of the bent pipe 7, and the second clamping jaws 333 rotate relative to the second clamping chuck 332, so that the bent pipe 7 can be clamped or loosened.
Referring to fig. 1-2 and 11-12, the pipe bending unit 5 includes a guide die assembly 51 for guiding the pipe bending 7, and the guide die assembly 51 is mounted on a side of the wheel die assembly 52 away from the swing arm assembly 53 and disposed along the length direction of the table 11. The wheel module 52 is mounted at the end of the frame 1 on the side far away from the abutting core rod unit 6, and the bottom thereof is rotatably connected with a swing arm assembly 53 capable of bending the bent pipe 7. After the bent pipe 7 enters the bent pipe unit 5, the bent pipe 7 is guided by the guide module 51, the bent pipe 7 is abutted against the wheel module 52, and the bent pipe 7 is bent through the rotation of the swing arm module 53.
Referring to fig. 11-12, the guide module 51 includes a guide rail 513 mounted on the top of the table 11, the guide rail 513 being disposed along the width direction of the table 11 and having a guide module 512 slidably connected to the top thereof. The side wall of the guide die module 512 is connected with a guide die cylinder 511, the guide die cylinder 511 is arranged on the side wall of the frame 1, and the guide die cylinder 511 stretches and contracts to drive the guide die module 512 to slide relative to the guide die slide rail 513, so that the position of the guide die assembly 51 is adjusted. The side wall of the guide die block 512, which is close to the side of the wheel die block 52, is provided with a guide die groove 514, and the guide die groove 514 is arranged along the length direction of the workbench 11 and is matched with the shape of the bent pipe 7. After entering the guide die assembly 51, the bent pipe 7 is attached to the guide die groove 514, and then the position of the guide die block 512 is adjusted to attach the bent pipe 7 to the wheel die assembly 52.
Referring to fig. 11 to 12, the wheel mold assembly 52 includes a wheel mold mounting member 521 mounted at the center of the sidewall of the frame 1, and a wheel mold rotating member 522 having a cylindrical structure rotatably mounted at the top of the wheel mold mounting member 521. The side wall of the wheel mold rotating piece 522 is provided with a wheel mold guide groove 523 with a shape matched with the bent pipe 7 in a surrounding mode, so that the bent pipe 7 can be attached to the wheel mold rotating piece 522.
Referring to fig. 11-12, the swing arm assembly 53 includes a swing arm frame 531 rotatably mounted at the bottom of the wheel mold rotating member 522, and the swing arm frame 531 can bend the bent pipe 7 during rotation of the swing arm frame 531 relative to the wheel mold rotating member 522. The regulating element 533 is arranged on the side wall of the frame 1 along the vertical direction, the lifting roller 532 which can be abutted against the bent pipe 7 is slidably arranged on the regulating element 533, and the regulating element 533 can drive the lifting roller 532 to move along the vertical direction, so that the bent pipe 7 is abutted against the bottom of the bent pipe 7, and the vibration of the bent pipe 7 is reduced.
Referring to fig. 1-2 and 13, the abutting core rod unit 6 is disposed at an end of the frame 1 far from the pipe bending unit 5, and the abutting core rod unit 6 includes an abutting sliding groove 61 mounted on the top of the table 11. The abutment slide groove 61 is provided along the width direction of the table 11, an abutment mounting bracket 62 is slidably mounted on the top of the abutment slide groove 61, the abutment mounting bracket 62 is provided in the vertical direction, and an abutment cylinder 63 is provided at the top thereof penetrating the abutment mounting bracket 62. The output end of the abutting cylinder 63 is connected with an abutting piece 64, and the abutting piece 64 is arranged on the side wall of the abutting mounting frame 62, which is close to the side wall of the follow-up feeding unit 3, and is in a cylindrical structure matched with the shape of the bent pipe 7. The position of the abutment core rod unit 6 can be adjusted by sliding the abutment mounting bracket 62 relative to the abutment sliding groove 61, and the abutment cylinder 63 stretches and contracts to drive the abutment member 64 to move so as to abut against the elbow pipe 7.
In the second embodiment, referring to fig. 1-2, fig. 5 and fig. 8-10, the second embodiment is improved based on the first embodiment, and although uninterrupted follow-up feeding of the two sets of bent pipes 7 can be achieved through cooperation of the pushing unit 2 and the follow-up feeding unit 3, in the process that the bent pipes 7 are separated from the inside of the follow-up feeding unit 3 to be bent for the last time, the end parts of the bent pipes 7 lack support, so that vibration is generated due to stress in the bending process. Therefore, the sleeve joint unit 4 which can provide support for the bent pipe 7 in the last bending process needs to be arranged, so that the bending precision reduction caused by the stress vibration of the bent pipe 7 is avoided.
Referring to fig. 1-2, 5 and 8-10, the sleeving unit 4 includes a telescopic component 41 installed on the top of the pushing base 22 and a sleeving component 42 connected to an end of the telescopic component 41, where the telescopic component 41 can drive the sleeving component 42 to move along the length direction of the workbench 11, so as to be sleeved with the end of the elbow 7. The sleeve joint assembly 42 is further abutted against the outer side wall of the elbow 7, and supports the elbow 7 from the end part of the elbow 7 to avoid vibration caused by stress of the elbow 7.
Referring to fig. 5 and 8-10, the telescopic assembly 41 includes a mounting frame 411 mounted on one side of the pushing frame 23, the mounting frame 411 being mounted on the side of the top of the pushing frame 23 remote from the swing assembly 25, and a telescopic cylinder 412 being mounted on the top thereof. Two groups of mounting blocks 414 are arranged on the side wall of one side of the mounting frame 411, far away from the pushing frame 23, in the length direction, the output end of the telescopic cylinder 412 is connected with a sliding connecting rod 413, and the sliding connecting rod 413 is inserted into the two groups of mounting blocks 414. One end of the sliding connecting rod 413, which is far away from the telescopic cylinder 412, is connected with the sleeving assembly 42, and the telescopic cylinder 412 can stretch to drive the sliding connecting rod 413 to slide inside the two groups of mounting blocks 414, and finally drive the sleeving assembly 42 to move along the length direction of the workbench 11 so as to be sleeved with the end part of the bent pipe 7.
Referring to fig. 5 and 8-10, the socket assembly 42 includes a connection plate 421 connected to a sliding link 413, and connection of the socket assembly 42 and the telescopic assembly 41 is achieved through the connection plate 421. A plurality of groups of guide rollers 426 are arranged on one side, away from the telescopic component 41, of the connecting plate 421, the guide rollers 426 are rotatably arranged on the side wall, away from the sliding connecting rod 413, of the connecting plate 421, a rack ring 423 is rotatably arranged on the guide rollers, and a sleeve ring 422 with the shape matched with the rack ring 423 is arranged on one side, away from the connecting plate 421, of the rack ring 423. A sleeve motor 424 is arranged on one side of the connecting plate 421 away from the guide roller 426, and the output end of the sleeve motor 424 is connected with a driving gear 425. The driving gear 425 is meshed with the rack ring 423, and in the process that the sleeve motor 424 drives the driving gear 425 to rotate, the rack ring 423 and the sleeve ring 422 can be driven to synchronously rotate through the meshing between the driving gear 425 and the rack ring 423. Therefore, the sleeve joint assembly 42 can drive the bent pipe 7 to synchronously adjust the rotation angle according to the change of the bending angle, so that the bending of the bent pipe 7 can be ensured to be normally carried out.
Referring to fig. 5 and fig. 8-10, a plurality of groups of sleeving modules 427 capable of abutting against the outer side wall of the elbow 7 are circumferentially arranged on the sleeving ring 422, and the sleeving modules 427 are telescopic to achieve the abutting against the outer side wall of the end part of the elbow 7, so that the sleeving assembly 42 can abut against the end part of the elbow 7. In the bending process of the bent pipe 7, the bent pipe 7 is supported from the end part of the bent pipe 7, so that vibration caused by stress in the bending process of the bent pipe 7 is effectively avoided, and the bending processing precision and the quality of a finished product are affected.
Referring to fig. 5 and 8-10, each set of the sleeving modules 427 includes a telescopic rod 4271 penetrating through the sleeving ring 422, a buffer spring 4272 is sleeved on the outer side wall of the telescopic rod 4271, and the buffer spring 4272 can provide buffer for the telescopic rod 4271 in the telescopic process of the telescopic rod 4271. The telescopic rod 4271 is connected with an abutting plate 4273 near the center of the sleeve joint ring 422, and the abutting plate 4273 is arranged in an arc shape which is attached to the outer side wall of the elbow 7. During the expansion and contraction process of the expansion and contraction rod 4271, the abutting plate 4273 can be attached to the outer side wall of the elbow 7, so that support is provided for the elbow 7.
An embodiment III, a feeding method of an automatic pipe bender capable of feeding with follow-up, according to the above automatic pipe bender capable of feeding with follow-up, includes the following steps:
s1, the pushing base 22 slides to the side close to the bent pipe unit 5, and the first group of bent pipes 7 are inserted into the first feeding assembly 32.
S11, the pushing base 22 slides on the pushing sliding rail 21 and gradually moves towards the side close to the pipe bending unit 5, the plurality of groups of first clamping jaws 323 rotate relative to the first clamping chuck 322 to keep the first feeding assembly 32 in an open state, and the plurality of groups of second clamping jaws 333 rotate relative to the second clamping chuck 332 to keep the second feeding assembly 33 in an open state.
And S12, after the space between the pushing frame 23 and the abutting piece 64 is enough for the first group of bent pipes 7 to be inserted, the first group of bent pipes 7 are inserted into the first feeding assembly 32 which is arranged through the pushing frame 23.
S2, the abutting piece 64 abuts against the first group of bent pipes 7, and the pushing base 22 slides to the side close to the abutting core rod unit 6, so that the first group of bent pipes 7 sequentially pass through the first feeding assembly 32, the feeding sleeve 31, the second feeding assembly 33 and the sleeving assembly 42.
S21, after the first set of elbows 7 is inserted into the first feeding assembly 32, the abutment mounting frame 62 slides relative to the abutment sliding groove 61, and the position of the abutment 64 is adjusted so that the end of the abutment 64 is inserted into the first set of elbows 7 to abut against the first set of elbows 7.
S22, the pushing base 22 slides on the pushing sliding rail 21 and gradually moves to the side close to the abutting core rod unit 6, and the first group of bent pipes 7 sequentially pass through the first feeding assembly 32, the feeding sleeve 31, the second feeding assembly 33 and the sleeving assembly 42.
S3, the first feeding assembly 32 and the second feeding assembly 33 are tightened, and the pushing base 22 slides to the side close to the bent pipe unit 5, so that the first group of bent pipes 7 enter the guide die assembly 51;
S31, the first clamping jaws 323 rotate relative to the first chuck 322 to enable the first feeding assembly 32 to keep a tightening state, and the second clamping jaws 333 rotate relative to the second chuck 332 to enable the second feeding assembly 33 to keep a tightening state.
S32, the pushing base 22 slides on the pushing slide rail 21 and gradually moves to the side close to the pipe bending unit 5, so that the first group of pipe bending 7 enters the inside of the guide die assembly 51, and the pipe bending 7 is guided by the guide die assembly 51 to be in contact with the wheel die assembly 52.
S4, the pushing base 22 continues to slide to the side close to the bent pipe unit 5, and the first group of bent pipes 7 are bent under the cooperation of the wheel die assembly 52 and the swing arm assembly 53.
S41, the pushing base 22 slides on the pushing sliding rail 21 and continues to move towards the side close to the bent pipe unit 5, the wheel die assembly 52 rotates to drive the bent pipe 7 to move, and the swing arm assembly 53 synchronously rotates relative to the wheel die assembly 52 to bend the first group of bent pipes 7.
S5, the first group of bent pipes 7 are separated from the second feeding assembly 33, the second feeding assembly 33 is kept in an open state, and the telescopic assembly 41 drives the sleeving assembly 42 to move towards the side close to the bent pipe unit 5, so that the end parts of the first group of bent pipes 7 are sleeved.
S51, the end parts of the first group of bent pipes 7 are separated from the second feeding assembly 33 in the bending process, and at the moment, the second clamping jaws 333 rotate relative to the second clamping chuck 332 to enable the second feeding assembly 33 to keep an open state.
And S52, the telescopic cylinder 412 stretches and contracts to drive the sliding connecting rod 413 to slide in the mounting block 414, so that the sleeving assembly 42 moves towards the end part of the first group of bent pipes 7.
And S53, after the sleeve joint assembly 42 is sleeved on the outer side wall of the end part of the first group of bent pipes 7, the plurality of groups of sleeve joint modules 427 arranged around the sleeve joint ring 422 are tightened to abut against the outer side wall of the first group of bent pipes 7.
And S54, in the bending process of the first group of bent pipes 7, according to the rotation of the first group of bent pipes 7, the sleeve motor 424 synchronously drives the driving gear 425 to rotate, and under the meshing of the rack ring 423, the sleeve ring 422 synchronously rotates along with the first group of bent pipes 7.
S6, the first feeding assembly 32 is opened, the second group of bent pipes 7 are inserted into the first feeding assembly 32, the abutting piece 64 abuts against the second group of bent pipes 7, the pushing base 22 slides to the side close to the abutting core rod unit 6, and the second group of bent pipes 7 sequentially pass through the first feeding assembly 32, the feeding sleeve 31 and the second feeding assembly 33.
And S61, rotating the plurality of groups of first clamping jaws 323 relative to the first clamping chuck 322 to enable the first feeding assembly 32 to be kept in an open state, and inserting the second group of bent pipes 7 into the first feeding assembly 32 in the bending process of the first group of bent pipes 7.
S62, after the second set of elbows 7 is inserted into the first feeding assembly 32, the abutment mounting frame 62 slides relative to the abutment sliding groove 61, and the position of the abutment 64 is adjusted so that the end of the abutment 64 is inserted into the second set of elbows 7 to abut against the second set of elbows 7.
S63, the pushing base 22 slides on the pushing sliding rail 21 and gradually moves to the side close to the abutting core rod unit 6, and the second group of bent pipes 7 sequentially pass through the first feeding assembly 32, the feeding sleeve 31 and the second feeding assembly 33.
And S7, the telescopic component 41 drives the sleeving component 42 to move to the side close to the second feeding component 33, and resetting is carried out.
And S71, the telescopic cylinder 412 stretches and contracts to drive the sliding connecting rod 413 to slide in the mounting block 414, so that the sleeving assembly 42 moves to the side close to the second feeding assembly 33, and resetting is completed.
S8, continuously repeating the feeding and bending operation of the first group of bent pipes 7 by the second group of bent pipes 7.
It will be apparent that the embodiments described above are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Claims (10)
1. An automatic pipe bending machine capable of feeding with follow-up, which is characterized in that: the automatic feeding device comprises a frame (1), wherein a workbench (11) is arranged at the top of the frame (1);
The pushing unit (2) comprises a pushing base (22) which is slidably arranged at the top of the workbench (11) through a pushing sliding rail (21), a pushing frame (23) which is arranged at the top of the pushing base (22) and a flexible feeding component (26) which penetrates through the workbench (11);
The follow-up feeding unit (3), the follow-up feeding unit (3) comprises a feeding sleeve (31) which penetrates through the pushing frame (23), a first feeding component (32) which is arranged at one end of the feeding sleeve (31) and a second feeding component (33) which is arranged at the other end of the feeding sleeve (31);
the sleeving unit (4) comprises a telescopic component (41) arranged at the top of the pushing base (22) and a sleeving component (42) connected with the end part of the telescopic component (41);
the pipe bending unit (5), the pipe bending unit (5) comprises a guide die assembly (51) capable of guiding the pipe bending (7), a wheel die assembly (52) arranged at the end part of the frame (1) and a swing arm assembly (53) arranged on the side wall of the frame (1);
An abutting core rod unit (6), wherein the abutting core rod unit (6) is arranged at one end, far away from the bent pipe unit (5), of the frame (1), and the abutting core rod unit (6) comprises an abutting sliding groove (61) arranged at the top of the workbench (11), an abutting mounting frame (62) slidably arranged at the top of the abutting sliding groove (61), an abutting air cylinder (63) penetrating through the abutting mounting frame (62) and an abutting piece (64) connected with the abutting air cylinder (63);
wherein, follow-up feeding unit (3) inside is provided with return bend (7), return bend (7) run through and cup joint subassembly (42) setting.
2. An automatic pipe bender capable of feeding according to claim 1, wherein: the pushing slide rails (21) are symmetrically arranged into two groups relative to the axial line of the length direction of the workbench (11), a pushing frame (23) is arranged at the center position of the top of the pushing base (22) along the length direction of the rack (1), and one end, close to the sleeving unit (4), of the pushing frame (23) is rotationally connected with a swinging assembly (25);
The flexible feeding assembly (26) is arranged at one end, close to the bent pipe unit (5), of the pushing frame (23), and two groups of flexible feeding assemblies are arranged along the length direction of the workbench (11).
3. An automatic pipe bender capable of feeding according to claim 2, wherein: the flexible feeding assembly (26) comprises a flexible guide roller (261) capable of guiding the bent pipe (7) and a lifting cylinder (262) arranged at the bottom of the workbench (11), a through hole with the inner diameter being matched with the outer diameter of the feeding sleeve (31) is formed in the pushing frame (23) in a penetrating mode, and a rotating assembly (24) capable of driving the bent pipe (7) to rotate is arranged at the end portion, far away from the flexible feeding assembly (26), of one side.
4. An automatic pipe bender capable of feeding according to claim 1, wherein: the feeding sleeve (31) is of a hollow cylindrical structure with the inner diameter matched with the outer diameter of the bent pipe (7), a first feeding component (32) is sleeved at one end, close to the abutting core rod unit (6), of the feeding sleeve (31), and a second feeding component (33) is sleeved at one end, close to the sleeving unit (4);
the first feeding assembly (32) comprises a first feeding sleeve (321) sleeved on the outer side wall of the feeding sleeve (31), a first clamping plate (322) is inserted into the first feeding sleeve (321), and a plurality of groups of first clamping jaws (323) are rotationally connected to one end, far away from the feeding sleeve (31), of the first clamping plate (322).
5. The automatic pipe bending machine capable of feeding with follow-up according to claim 4, wherein: the second feeding assembly (33) comprises a second feeding sleeve (331) sleeved on the outer side wall of the feeding sleeve (31), a second clamping plate (332) is inserted into the second feeding sleeve (331), and a plurality of groups of second clamping jaws (333) are rotatably connected to one end, far away from the feeding sleeve (31), of the second clamping plate (332);
the ends of the first clamping jaws (323) are arranged into arc structures with the inner walls being matched with the shape of the bent pipe (7), and the ends of the second clamping jaws (333) are arranged into arc structures with the inner walls being matched with the shape of the bent pipe (7).
6. An automatic pipe bender capable of feeding according to claim 1, wherein: the telescopic component (41) comprises a mounting frame (411) arranged on one side of the pushing frame (23), the mounting frame (411) is arranged at the top of the pushing frame (23), a telescopic cylinder (412) is arranged at the top of the mounting frame, the output end of the telescopic cylinder (412) is connected with a sliding connecting rod (413), and one end, far away from the telescopic cylinder (412), of the sliding connecting rod (413) is connected with a sleeving component (42).
7. The automatic pipe bending machine capable of feeding according to claim 6, wherein: the socket joint subassembly (42) include connecting plate (421) of being connected with sliding connection rod (413), telescopic subassembly (41) one side is kept away from to connecting plate (421) and rack ring (423) of ring structure are installed in rotation through guide roll (426), rack ring (423) keep away from connecting plate (421) one side and install socket joint ring (422) of shape and adaptation thereof, socket joint ring (422) are gone up to encircle and are provided with multiunit can cup joint module (427) to return bend (7) lateral wall butt.
8. An automatic pipe bender capable of feeding according to claim 1, wherein: the wheel die assembly (52) is arranged at one side end part of the frame (1) far away from the abutting core rod unit (6), and the bottom of the wheel die assembly is rotationally connected with a swing arm assembly (53) capable of bending the bent pipe (7), and the guide die assembly (51) is arranged at one side of the wheel die assembly (52) far away from the swing arm assembly (53) and is arranged along the length direction of the workbench (11).
9. An automatic pipe bender capable of feeding according to claim 1, wherein: the abutting sliding groove (61) is formed in the width direction of the workbench (11), and the abutting piece (64) is arranged on the side wall of the abutting installation frame (62) close to one side of the follow-up feeding unit (3) and is of a cylindrical structure matched with the shape of the bent pipe (7).
10. A feeding method of an automatic pipe bender capable of feeding in a follow-up manner, which is characterized by comprising the following steps of:
S1, a pushing base (22) slides to a side close to an elbow unit (5), and a first group of elbows (7) are inserted into a first feeding assembly (32);
S2, the abutting piece (64) is abutted with the first group of bent pipes (7), and the pushing base (22) slides to the side close to the abutting core rod unit (6) so that the first group of bent pipes (7) sequentially pass through the first feeding assembly (32), the feeding sleeve (31), the second feeding assembly (33) and the sleeving assembly (42);
s3, the first feeding assembly (32) and the second feeding assembly (33) are tightened, and the pushing base (22) slides to the side close to the bent pipe unit (5) so that the first group of bent pipes (7) enter the guide module assembly (51);
S4, continuously sliding the pushing base (22) to a side close to the bent pipe unit (5), and bending the first group of bent pipes (7) under the cooperation of the wheel die assembly (52) and the swing arm assembly (53);
S5, the first group of bent pipes (7) are separated from the second feeding assembly (33), the second feeding assembly (33) is kept in an open state, the telescopic assembly (41) drives the sleeving assembly (42) to move towards the side close to the bent pipe unit (5), and the end parts of the first group of bent pipes (7) are sleeved;
S6, the first feeding assembly (32) is opened, the second group of bent pipes (7) are inserted into the first feeding assembly (32), the abutting piece (64) is abutted with the second group of bent pipes (7), the pushing base (22) slides to the side close to the abutting core rod unit (6), and the second group of bent pipes (7) sequentially pass through the first feeding assembly (32), the feeding sleeve (31) and the second feeding assembly (33);
S7, the telescopic component (41) drives the sleeving component (42) to move towards the side close to the second feeding component (33) to reset;
S8, continuously repeating feeding bending operation of the first group of bent pipes (7) by the second group of bent pipes (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410952017.0A CN118477924A (en) | 2024-07-16 | 2024-07-16 | Automatic pipe bending machine capable of feeding with follow-up and feeding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410952017.0A CN118477924A (en) | 2024-07-16 | 2024-07-16 | Automatic pipe bending machine capable of feeding with follow-up and feeding method thereof |
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| CN118477924A true CN118477924A (en) | 2024-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410952017.0A Pending CN118477924A (en) | 2024-07-16 | 2024-07-16 | Automatic pipe bending machine capable of feeding with follow-up and feeding method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1748891A (en) * | 2005-10-19 | 2006-03-22 | 张家港市合丰机械制造有限公司 | Material feeding pushing aid device for tube bending machine |
| CN113020347A (en) * | 2021-03-09 | 2021-06-25 | 广东铭利达科技有限公司 | Numerical control pipe bender |
| CN115193972A (en) * | 2022-09-16 | 2022-10-18 | 南京多艾玩具有限公司 | Pipe bending device for manufacturing baby carriage |
| CN115647151A (en) * | 2022-11-01 | 2023-01-31 | 浙江金马逊智能制造股份有限公司 | Core rod mechanism for cutting off bent pipe workpiece on line and cutting device |
| CN116274532A (en) * | 2023-04-12 | 2023-06-23 | 南通职业大学 | Full-automatic pipe bending machine |
| CN219837071U (en) * | 2023-05-15 | 2023-10-17 | 南京卓耐重工机械制造有限公司 | Feeding clamping anti-loosening device of pipe bending machine |
-
2024
- 2024-07-16 CN CN202410952017.0A patent/CN118477924A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1748891A (en) * | 2005-10-19 | 2006-03-22 | 张家港市合丰机械制造有限公司 | Material feeding pushing aid device for tube bending machine |
| CN113020347A (en) * | 2021-03-09 | 2021-06-25 | 广东铭利达科技有限公司 | Numerical control pipe bender |
| CN115193972A (en) * | 2022-09-16 | 2022-10-18 | 南京多艾玩具有限公司 | Pipe bending device for manufacturing baby carriage |
| CN115647151A (en) * | 2022-11-01 | 2023-01-31 | 浙江金马逊智能制造股份有限公司 | Core rod mechanism for cutting off bent pipe workpiece on line and cutting device |
| CN116274532A (en) * | 2023-04-12 | 2023-06-23 | 南通职业大学 | Full-automatic pipe bending machine |
| CN219837071U (en) * | 2023-05-15 | 2023-10-17 | 南京卓耐重工机械制造有限公司 | Feeding clamping anti-loosening device of pipe bending machine |
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