Automatic pipe bending machine capable of follow-up feeding and feeding method thereof

Abstract

The present invention is applicable to the technical field of pipe bending machines, and provides an automatic pipe bending machine capable of follow-feeding and a feeding method thereof, comprising a frame, a workbench installed on the top of the frame; a pushing unit, the pushing unit comprising a pushing base slidably installed on the top of the workbench through a pushing slide rail, a pushing frame installed on the top of the pushing base, and a flexible feeding assembly arranged throughout the workbench. The device solves the problems of a long waiting gap during the feeding process of the automatic pipe bending machine, which reduces the efficiency of the bending process, and the problem that the end of the bent pipe is in a suspended state during the bending process, which is prone to vibration due to lack of support force, thereby affecting the accuracy of the bending process and the quality of the finished product. The device achieves the effect of adjusting the end of the bent pipe during the bending process to avoid the vibration of the bent pipe affecting the processing, while continuously feeding a new group of bent pipes to improve the processing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe bending machines, and more specifically, to an automatic pipe bending machine capable of follow-up feeding and a feeding method thereof. Background Art

[0002] Pipe bending machines are generally divided into two types: hydraulic and CNC. Hydraulic pipe bending machines are purely hydraulically driven, while CNC pipe bending machines, also known as automatic pipe bending machines, are based on hydraulic pipe bending machines with a PLC control system added to achieve digital information control. Among them, CNC pipe bending machines are the most widely used, involving various metal pipes on cars, airplanes and trains, various pipes on pharmaceutical production equipment, various pipes on power generation boiler systems, and so on.

[0003] Although the existing automatic pipe bending machine can realize the loading of the bent pipe according to the different bending positions during the bending process, it can only insert the new bent pipe into the pusher chuck and load the new set of bent pipes after the first set of bent pipes are processed and removed. This will cause the automatic pipe bending machine to have a long waiting interval during the bending process, reducing the efficiency of the bending process.

[0004] At the same time, when the end of the bent pipe is released from the push chuck for the last bending process, the end of the bent pipe is in a suspended state. During the bending process, it is easy to vibrate due to lack of support, thus affecting the accuracy of the bending process and the quality of the finished product. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an automatic pipe bending machine and a feeding method thereof which can adjust the end of the bent pipe during the bending process to avoid the influence of the bending pipe vibration on the processing, and at the same time continuously feed a new group of bent pipes to improve the processing efficiency.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An automatic pipe bending machine capable of follow-up feeding comprises a frame, a workbench is installed on the top of the frame; a pushing unit, the pushing unit comprises a pushing base slidably installed on the top of the workbench through a pushing slide rail, a pushing frame installed on the top of the pushing base, and a flexible feeding component arranged through the workbench; a follow-up feeding unit, the follow-up feeding unit comprises a feeding sleeve arranged through the pushing frame, a first feeding component installed at one end of the feeding sleeve, and a second feeding component installed at the other end of the feeding sleeve; a sleeve unit, the sleeve unit comprises a telescopic component installed on the top of the pushing base and a sleeve unit connected to the telescopic component A sleeve assembly connected to the end of a member; a bending unit, the bending unit comprising a guide die assembly for guiding the bent pipe, a wheel die assembly installed at the end of the frame, and a swing arm assembly installed on the side wall of the frame; an abutment core rod unit, the abutment core rod unit is arranged on the frame at one end away from the bending unit, the abutment core rod unit comprises an abutment slide mounted on the top of the workbench, an abutment mounting frame slidably mounted on the top of the abutment slide, an abutment cylinder arranged through the abutment mounting frame, and an abutment member connected to the abutment cylinder; wherein a bent pipe is arranged inside the follower feeding unit, and the bent pipe passes through the sleeve assembly.

[0008] The present invention is further configured as follows: the pushing slide rails are symmetrically arranged in two groups about the axis line in the length direction of the workbench, a pushing rack is arranged at the top center position of the pushing base along the length direction of the frame, and the pushing rack is rotatably connected with a swing component at one end close to the sleeve unit; the flexible feeding component is arranged at one end of the pushing rack close to the bending unit, and two groups are arranged along the length direction of the workbench.

[0009] The present invention is further configured as follows: the flexible feeding assembly includes a flexible guide roller that can guide the bent pipe and a lifting cylinder installed at the bottom of the workbench; a through hole with an inner diameter that matches the outer diameter of the feeding sleeve is penetrated through the pushing rack, and a rotating assembly that can drive the bent pipe to rotate is installed at the end away from the flexible feeding assembly.

[0010] The present invention is further configured as follows: the feeding sleeve is configured as a hollow cylindrical structure with an inner diameter adapted to the outer diameter of the bent pipe, the feeding sleeve is provided with a first feeding component close to one end of the abutting core rod unit, and a second feeding component is provided close to one end of the sleeve unit; the first feeding component includes a first feeding sleeve sleeved on the outer wall of the feeding sleeve, a first chuck is inserted inside the first feeding sleeve, and the first chuck is rotatably connected to a plurality of groups of first clamping jaws away from one end of the feeding sleeve.

[0011] The present invention is further configured as follows: the second feeding assembly includes a second feeding sleeve sleeved on the outer wall of the feeding sleeve, a second chuck is inserted inside the second feeding sleeve, and the second chuck is rotatably connected to one end away from the feeding sleeve with multiple groups of second jaws; the ends of the multiple groups of first jaws are all configured as arc structures whose inner walls are adapted to the shape of the curved pipe, and the ends of the multiple groups of second jaws are all configured as arc structures whose inner walls are adapted to the shape of the curved pipe.

[0012] By adopting the above technical solution, a first feeding assembly and a second feeding assembly are arranged at both ends of the feeding sleeve. When the bent pipe is fed, it enters the feeding sleeve from the inside of the first feeding assembly and then passes out from the second feeding assembly. Both the first feeding assembly and the second feeding assembly can clamp or loosen the bent pipe.

[0013] The present invention is further configured as follows: the telescopic assembly includes a mounting frame installed on one side of the pushing rack, the mounting frame is installed on the top of the pushing rack, and a telescopic cylinder is installed on the top of the mounting frame, a sliding connecting rod is connected to the output end of the telescopic cylinder, and a sleeve assembly is connected to the end of the sliding connecting rod away from the telescopic cylinder.

[0014] The present invention is further configured as follows: the sleeve assembly includes a connecting plate connected to a sliding connecting rod, a rack ring with a circular ring structure is rotatably installed on the side of the connecting plate away from the telescopic assembly through a guide roller, a sleeve ring with a shape matching the rack ring is installed on the side of the rack ring away from the connecting plate, and a plurality of groups of sleeve modules that can abut against the outer wall of the bent pipe are arranged around the sleeve ring.

[0015] By adopting the above technical solution, the rack ring can synchronously drive the sleeve ring to rotate according to the change of the bending angle of the bent pipe. The sleeve module can be telescoped to fit with the outer wall of the end of the bent pipe, which is convenient for providing support for the bent pipe from the end of the bent pipe during the bending process.

[0016] The present invention is further configured as follows: the wheel mold assembly is installed on the end of the frame away from the abutting core rod unit, and its bottom is rotatably connected to a swing arm assembly that can bend the bent pipe; the guide mold assembly is installed on the side of the wheel mold assembly away from the swing arm assembly and is arranged along the length direction of the workbench.

[0017] The present invention is further configured as follows: the abutting slide groove is arranged along the width direction of the workbench, the abutting member is arranged on the side wall of the abutting mounting frame close to the follower feeding unit, and is configured as a cylindrical structure adapted to the shape of the bent pipe.

[0018] A feeding method for an automatic pipe bending machine capable of follow-up feeding, according to the automatic pipe bending machine capable of follow-up feeding as described above, comprises the following steps:

[0019] S1, the push base slides toward the side close to the bending unit, and inserts the first group of bending pipes into the first feeding assembly;

[0020] S2, the abutment member abuts against the first group of bent pipes, and the pusher base slides toward the side close to the abutment mandrel unit, so that the first group of bent pipes pass through the first feeding assembly, the feeding sleeve, the second feeding assembly and the sleeve assembly in sequence;

[0021] S3, the first feeding assembly and the second feeding assembly are tightened, and the pushing base slides toward the side close to the bending unit, so that the first group of bent pipes enters the interior of the guide die assembly;

[0022] S4, the pusher base continues to slide toward the side close to the bending unit, and the first group of bent pipes are bent under the cooperation of the wheel die assembly and the swing arm assembly;

[0023] S5, the first group of bent pipes are released from the second feeding assembly, the second feeding assembly remains in an open state, the telescopic assembly drives the sleeve assembly to move toward the side close to the bending unit, and sleeves the ends of the first group of bent pipes;

[0024] S6, the first feeding assembly is opened, the second group of bent pipes are inserted into the first feeding assembly, the abutment member abuts against the second group of bent pipes, and the pusher base slides toward the side close to the abutment mandrel unit, so that the second group of bent pipes pass through the first feeding assembly, the feeding sleeve, and the second feeding assembly in sequence;

[0025] S7, the telescopic assembly drives the sleeve assembly to move toward the side close to the second feeding assembly to reset;

[0026] S8, the second group of bent pipes continues to repeat the feeding and bending operation of the first group of bent pipes.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By arranging the first feeding assembly and the second feeding assembly at both ends of the feeding sleeve, the second group of bent pipes 7 can be inserted into the feeding sleeve from the first feeding assembly during the process of the first group of bent pipes passing through the second feeding assembly. The uninterrupted follow-up feeding of the first group of bent pipes and the second group of bent pipes is realized, thereby reducing the waiting gap after the bending unit is bent and improving the working efficiency of the device.

[0029] 2. A rack ring is set to drive the sleeve ring to rotate, so that the sleeve assembly can drive the bent pipe to adjust the rotation angle synchronously according to the change of the bending angle, thereby ensuring that the bending of the bent pipe can be carried out normally.

[0030] 3. The sleeve module is telescopically fitted with the outer wall of the end of the bent pipe, so that the sleeve assembly can abut against the end of the bent pipe. It is convenient to provide support for the bent pipe from the end of the bent pipe during the bending process, effectively avoiding vibration caused by the force during the bending process, thereby affecting the bending process accuracy and the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The figure is a schematic diagram of the structure of the automatic pipe bending machine capable of follow-up feeding of the present invention.

[0032] Figure 2 The exploded structural diagram of the automatic pipe bending machine capable of follow-up feeding of the present invention is shown.

[0033] Figure 3 It is a structural schematic diagram of the material pushing unit in the present invention.

[0034] Figure 4 For along Figure 1 Partial section view along the AA cutting line.

[0035] Figure 5 It is a structural schematic diagram of the follow-up feeding unit in the present invention.

[0036] Figure 6 It is a schematic diagram of the explosion structure of the follow-up feeding unit in the present invention.

[0037] Figure 7 It is a schematic diagram of the feeding state of the follower feeding unit in the present invention.

[0038] Figure 8 It is a structural schematic diagram of the telescopic component in the present invention.

[0039] Fig. 9 It is a structural schematic diagram of the socket assembly in the present invention.

[0040] Fig.10 It is a schematic diagram of the exploded structure of the socket assembly in the present invention.

[0041] Fig.11 It is a schematic diagram of the structure of the bending pipe unit in the present invention.

[0042] Fig.12 It is a structural schematic diagram of the bending pipe unit in the present invention from another perspective.

[0043] Fig.13 It is a schematic structural diagram of the abutting core rod unit in the present invention.

[0044] Description of reference numerals: 1, frame; 11, workbench;

[0045] 2. Pushing unit; 21. Pushing slide rail; 22. Pushing base; 23. Pushing rack; 24. Rotating assembly; 241. Rotating motor; 242. Rotating member; 25. Swinging assembly; 251. Swinging cylinder; 252. Swinging sleeve; 26. Flexible feeding assembly; 261. Flexible guide roller; 262. Lifting cylinder;

[0046] 3. Follow-up feeding unit; 31. Feeding sleeve; 32. First feeding assembly; 321. First feeding sleeve; 322. First chuck; 323. First clamp; 33. Second feeding assembly; 331. Second feeding sleeve; 332. Second chuck; 333. Second clamp;

[0047] 4. socket unit; 41. telescopic assembly; 411. mounting frame; 412. telescopic cylinder; 413. sliding connecting rod; 414. mounting block; 42. socket assembly; 421. connecting plate; 422. socket ring; 423. rack ring; 424. socket motor; 425. driving gear; 426. guide roller; 427. socket module; 4271. telescopic rod; 4272. buffer spring; 4273. abutment plate;

[0048] 5. Bending unit; 51. Guide mold assembly; 511. Guide mold cylinder; 512. Guide mold module; 513. Guide mold slide rail; 514. Guide mold groove; 52. Wheel mold assembly; 521. Wheel mold mounting part; 522. Wheel mold rotating part; 523. Wheel mold guide groove; 53. Swing arm assembly; 531. Swing arm frame; 532. Lifting roller; 533. Adjustment part;

[0049] 6. abutting the mandrel unit; 61. abutting the slideway; 62. abutting the mounting frame; 63. abutting the cylinder; 64. abutting the member;

[0050] 7. Pipe bending. DETAILED DESCRIPTION

[0051] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0052] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0053] See also Figure 1-13 , the present invention provides the following technical solutions:

[0054] For example, see Figure 1-7 and Figure 11-13, including a frame 1, a pusher unit 2, a follower feeding unit 3, a tube bending unit 5, an abutting core rod unit 6 and a tube bending 7. The frame 1 is arranged in a rectangular structure and is arranged horizontally. A workbench 11 is installed on the top of the frame 1 to provide a working environment for the entire device. An abutting core rod unit 6 is installed at one end of the top of the workbench 11, and a tube bending unit 5 is installed at the other end. A pusher unit 2 is slidably installed on the top of the workbench 11 along its length direction, and a follower feeding unit 3 is arranged through the pusher unit 2. The tube bending 7 is inserted into the follower feeding unit 3 with the cooperation of the abutting core rod unit 6. During the sliding process of the follower feeding unit 3 following the pusher unit 2, the tube bending 7 is transported to the inside of the tube bending unit 5 to complete the bending process.

[0055] See also Figure 1-4 The pusher unit 2 includes two sets of pusher rails 21 symmetrically arranged along the length direction of the workbench 11, and a pusher base 22 is slidably installed on the top of the two sets of pusher rails 21. The pusher base 22 is set as a rectangular structure, and a pusher frame 23 is set at the center of its top along the length direction of the frame 1. A through hole with an inner diameter that matches the outer diameter of the feeding sleeve 31 is opened on the pusher frame 23, and the feeding sleeve 31 can be sleeved inside the pusher frame 23. The pusher frame 23 is rotatably connected to a swing assembly 25 at one end close to the sleeve unit 4, and the swing assembly 25 is installed on the top of the pusher base 22 and is set on one side of the pusher frame 23. The swing assembly 25 includes a swing cylinder 251 installed on the side wall of the pusher rack 23 and a swing sleeve 252 rotatably sleeved on the end of the pusher rack 23. The extension and retraction of the swing cylinder 251 can drive the swing sleeve 252 to rotate, thereby fine-tuning the angle of the swing sleeve 252 to ensure that the feeding sleeve 31 inside the pusher rack 23 can be reliably plugged in.

[0056] See also Figure 1-4, the flexible feeding assembly 26 is arranged at one end of the pusher 23 near the bending unit 5, and two groups are arranged along the length direction of the workbench 11. Both groups of flexible feeding assemblies 26 are arranged throughout the workbench 11, and the flexible feeding assembly 26 includes a flexible guide roller 261 that can guide the bent pipe 7 and a lifting cylinder 262 installed at the bottom of the workbench 11. The lifting cylinder 262 can be extended and retracted to drive the flexible guide roller 261 to move in the vertical direction, so as to guide the bent pipe 7 according to the height of the bent pipe 7. On the one hand, the bent pipe 7 can smoothly enter the bending unit 5 to complete the bending, and on the other hand, it can also use its own flexible material to provide buffering to reduce the vibration caused by the force on the bent pipe 7. A rotating assembly 24 that can drive the bent pipe 7 to rotate is installed at the end of the pusher 23 away from the flexible feeding assembly 26. The rotating assembly 24 includes a rotating motor 241 installed on the top of the pusher 23 and a rotating member 242 installed on the side wall of the pusher 23 away from the flexible feeding assembly 26. After the feeding sleeve 31 is inserted into the pushing frame 23 , the rotating motor 241 can drive the rotating member 242 to rotate according to the change of the bending angle, and synchronously drive the feeding sleeve 31 to rotate, and finally adjust the angle of the bent pipe 7 .

[0057] See also Figure 1-2 and Figure 5-7 The follow-up feeding unit 3 includes a feeding sleeve 31 that penetrates the pusher frame 23. The feeding sleeve 31 is a hollow cylindrical structure whose inner diameter matches the outer diameter of the elbow 7. The elbow 7 can be inserted into the feeding sleeve 31 to complete the loading. The feeding sleeve 31 is sleeved with a first feeding component 32 at one end close to the abutting core rod unit 6, and a second feeding component 33 at one end close to the sleeve unit 4. When loading the elbow 7, it enters the feeding sleeve 31 from the inside of the first feeding component 32 and then passes out from the second feeding component 33. Both the first feeding component 32 and the second feeding component 33 can clamp or loosen the elbow 7.

[0058] See also Figure 5-7 By arranging the first feeding assembly 32 and the 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 tightened respectively. When the first group of bent pipes 7 pass through the second feeding assembly 33, the second group of bent pipes 7 can be inserted into the feeding sleeve 31 from the first feeding assembly 32. The uninterrupted follow-up feeding of the first group of bent pipes 7 and the second group of bent pipes 7 is realized, thereby reducing the waiting interval after the bending unit 5 is bent, and improving the working efficiency of the device.

[0059] See also Figure 5-7The first feeding assembly 32 includes a first feeding sleeve 321 sleeved on the outer wall of the feeding sleeve 31, and the first feeding sleeve 321 is configured as a hollow cylindrical structure with an inner diameter matching the outer diameter of the feeding sleeve 31. A first chuck 322 is inserted into the interior of the first feeding sleeve 321, and the first chuck 322 is rotatably connected to a plurality of first clamping jaws 323 at one end away from the feeding sleeve 31. The ends of the plurality of first clamping jaws 323 are configured as arc structures with inner walls matching the shape of the curved pipe 7, and the plurality of first clamping jaws 323 rotate relative to the first chuck 322 to achieve clamping or loosening of the curved pipe 7. The second feeding assembly 33 includes a second feeding sleeve 331 sleeved on the outer wall of the feeding sleeve 31, and the second feeding sleeve 331 is configured as a hollow cylindrical structure with an inner diameter matching the outer diameter of the feeding sleeve 31. The second feeding sleeve 331 is internally plugged with a second chuck 332, and the second chuck 332 is rotatably connected to one end away from the feeding sleeve 31 with multiple sets of second clamping jaws 333. The ends of the multiple sets of second clamping jaws 333 are all configured as arc structures whose inner walls are adapted to the shape of the bent pipe 7. The multiple sets of second clamping jaws 333 rotate relative to the second chuck 332 to achieve clamping or loosening of the bent pipe 7.

[0060] See also Figure 1-2 and Figure 11-12 The pipe bending unit 5 includes a guide die assembly 51 that can guide the bent pipe 7. The guide die assembly 51 is installed on the side of the wheel die assembly 52 away from the swing arm assembly 53 and is arranged along the length direction of the workbench 11. The wheel die assembly 52 is installed on the end of the frame 1 away from the abutment core rod unit 6, and the bottom of the wheel die assembly 52 is rotatably connected to the swing arm assembly 53 that can bend the bent pipe 7. After the bent pipe 7 enters the pipe bending unit 5, it is guided by the guide die assembly 51, so that the bent pipe 7 abuts against the wheel die assembly 52, and then the swing arm assembly 53 rotates to complete the bending of the bent pipe 7.

[0061] See also Figure 11-12 The guide mold assembly 51 includes a guide mold slide rail 513 installed on the top of the workbench 11. The guide mold slide rail 513 is arranged along the width direction of the workbench 11, and a guide mold module 512 is slidably connected to the top thereof. The side wall of the guide mold module 512 is connected to a guide mold cylinder 511, which is installed on the side wall of the frame 1. The extension of the guide mold cylinder 511 can drive the guide mold module 512 to slide relative to the guide mold slide rail 513, thereby adjusting the position of the guide mold assembly 51. A guide mold groove 514 is provided on the side wall of the guide mold module 512 close to the wheel mold assembly 52. ​​The guide mold groove 514 is arranged along the length direction of the workbench 11, and its shape is adapted to the shape of the bent pipe 7. After the bent pipe 7 enters the guide mold assembly 51, it fits with the guide mold groove 514, and then the position of the guide mold module 512 is adjusted to make the bent pipe 7 fit with the wheel mold assembly 52.

[0062] See also Figure 11-12The wheel mold assembly 52 includes a wheel mold mounting part 521 mounted at the center of the side wall of the frame 1, and a cylindrical wheel mold rotating part 522 is rotatably mounted on the top of the wheel mold mounting part 521. A wheel mold guide groove 523 with a shape adapted to the bent pipe 7 is opened around the side wall of the wheel mold rotating part 522, so that the bent pipe 7 can fit with the wheel mold rotating part 522.

[0063] See also Figure 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. The swing arm frame 531 can bend the bent pipe 7 during the rotation relative to the wheel mold rotating member 522. An adjusting member 533 is mounted on the side wall of the frame 1 in the vertical direction. A lifting roller 532 that can abut against the bent pipe 7 is slidably mounted on the adjusting member 533. The adjusting member 533 can drive the lifting roller 532 to move in the vertical direction, thereby abutting against the bent pipe 7 from the bottom of the bent pipe 7 to reduce the vibration of the bent pipe 7.

[0064] See also Figure 1-2 and Fig.13 The abutting mandrel unit 6 is arranged on the frame 1 at one end away from the bending unit 5, and the abutting mandrel unit 6 includes an abutting slide 61 installed on the top of the workbench 11. The abutting slide 61 is arranged along the width direction of the workbench 11, and an abutting mounting frame 62 is slidably installed on the top of the abutting slide 61. The abutting mounting frame 62 is arranged in the vertical direction, and an abutting cylinder 63 is arranged on the top of the abutting mounting frame 62. The output end of the abutting cylinder 63 is connected to an abutting member 64, which is arranged on the side wall of the abutting mounting frame 62 close to the follower feeding unit 3 and is arranged to be a cylindrical structure adapted to the shape of the bending pipe 7. The abutting mounting frame 62 can slide relative to the abutting slide 61 to adjust the position of the abutting mandrel unit 6, and the extension and contraction of the abutting cylinder 63 can drive the abutting member 64 to move, so as to abut against the bending pipe 7.

[0065] For example 2, please refer to Figure 1-2 , Figure 5 and Figure 8-10 , the second embodiment is improved on the basis of the first embodiment as follows: although the cooperation of the pushing unit 2 and the follow-up feeding unit 3 can realize the uninterrupted follow-up feeding of the two sets of bent pipes 7, the ends of the bent pipes 7 will vibrate due to lack of support when the bent pipes 7 are released from the follow-up feeding unit 3 for the last bending. Therefore, it is necessary to provide a sleeve unit 4 that can provide support for the bent pipes 7 during the last bending process to avoid the bending accuracy being reduced due to the force vibration of the bent pipes 7.

[0066] See also Figure 1-2 , Figure 5 and Figure 8-10The sleeve unit 4 includes a telescopic component 41 installed on the top of the pusher base 22 and a sleeve component 42 connected to the end of the telescopic component 41. The telescopic component 41 can drive the sleeve 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 component 42 further abuts against the outer wall of the elbow 7, providing support for the elbow 7 from the end of the elbow 7 to prevent the elbow 7 from vibrating due to force.

[0067] See also Figure 5 and Figure 8-10 The telescopic assembly 41 includes a mounting frame 411 mounted on one side of the pusher frame 23. The mounting frame 411 is mounted on the top of the pusher frame 23 away from the swing assembly 25, and a telescopic cylinder 412 is mounted on the top. The side wall of the mounting frame 411 away from the pusher frame 23 is provided with two groups of mounting blocks 414 along its length direction. The output end of the telescopic cylinder 412 is connected to a sliding connecting rod 413, and the sliding connecting rod 413 is inserted into the two groups of mounting blocks 414. The end of the sliding connecting rod 413 away from the telescopic cylinder 412 is connected to the sleeve assembly 42. The telescopic cylinder 412 can drive the sliding connecting rod 413 to slide inside the two groups of mounting blocks 414, and finally drive the sleeve assembly 42 to move along the length direction of the workbench 11 and sleeve the end of the elbow 7.

[0068] See also Figure 5 and Figure 8-10 The sleeve assembly 42 includes a connecting plate 421 connected to the sliding link 413, and the sleeve assembly 42 is connected to the telescopic assembly 41 through the connecting plate 421. A plurality of guide rollers 426 are installed on the side of the connecting plate 421 away from the telescopic assembly 41. The guide rollers 426 are rotatably installed on the side wall of the connecting plate 421 away from the sliding link 413, and a rack ring 423 is rotatably installed on the guide rollers 426. A sleeve ring 422 with a shape matching the rack ring 423 is installed on the side away from the connecting plate 421. A sleeve motor 424 is installed on the side of the connecting plate 421 away from the guide rollers 426, and a driving gear 425 is connected to the output end of the sleeve motor 424. The driving gear 425 and the rack ring 423 are meshed with each other. When the sleeve motor 424 drives the driving gear 425 to rotate, the meshing between the driving gear 425 and the rack ring 423 can drive the rack ring 423 and the sleeve ring 422 to rotate synchronously. Thereby, the sleeve assembly 42 can drive the curved pipe 7 to adjust the rotation angle synchronously according to the change of the bending angle, thereby ensuring that the bending of the curved pipe 7 can be carried out normally.

[0069] See also Figure 5 and Figure 8-10The sleeve ring 422 is surrounded by a plurality of sleeve modules 427 that can abut against the outer wall of the bent pipe 7. The sleeve modules 427 can be extended to fit against the outer wall of the end of the bent pipe 7, so that the sleeve assembly 42 can abut against the end of the bent pipe 7. It is convenient to provide support for the bent pipe 7 from the end of the bent pipe 7 during the bending process of the bent pipe 7, effectively avoiding vibration caused by the force during the bending process of the bent pipe 7, thereby affecting the bending processing accuracy and the quality of the finished product.

[0070] See also Figure 5 and Figure 8-10 Each set of sleeve modules 427 includes a telescopic rod 4271 that passes through the sleeve ring 422. The outer wall of the telescopic rod 4271 is sleeved with a buffer spring 4272. The buffer spring 4272 can provide buffering for the telescopic rod 4271 during the telescopic process. The telescopic rod 4271 is connected to a side of the center of the sleeve ring 422 with an abutment plate 4273. The abutment plate 4273 is set to a circular arc shape that fits the shape of the outer wall of the curved pipe 7. During the telescopic process of the telescopic rod 4271, the abutment plate 4273 can fit the outer wall of the curved pipe 7, thereby providing support for the curved pipe 7.

[0071] Embodiment 3: A feeding method of an automatic pipe bending machine capable of follow-up feeding, according to the above-mentioned automatic pipe bending machine capable of follow-up feeding, comprising the following steps:

[0072] S1. The pushing base 22 slides toward the side close to the bending pipe unit 5 to insert the first group of bending pipes 7 into the first feeding assembly 32.

[0073] S11, the pushing base 22 slides on the pushing rail 21 and gradually moves toward the side close to the bending unit 5, multiple groups of first clamps 323 rotate relative to the first chuck 322 to keep the first feeding assembly 32 in an open state, and multiple groups of second clamps 333 rotate relative to the second chuck 332 to keep the second feeding assembly 33 in an open state.

[0074] S12, when the distance between the pusher rack 23 and the abutment member 64 is sufficient for the first group of bent pipes 7 to be inserted, the first group of bent pipes 7 is inserted into the first feeding assembly 32 that passes through the pusher rack 23.

[0075] S2, the abutment member 64 abuts against the first group of bent pipes 7, and the pushing base 22 slides toward the side close to the abutment core rod unit 6, so that the first group of bent pipes 7 pass through the first feeding assembly 32, the feeding sleeve 31, the second feeding assembly 33 and the sleeve assembly 42 in sequence.

[0076] S21, after the first group of curved tubes 7 are inserted into the first feeding assembly 32, the abutment mounting frame 62 slides relative to the abutment slide groove 61, and the position of the abutment member 64 is adjusted so that the end of the abutment member 64 is inserted into the first group of curved tubes 7 and abuts against the first group of curved tubes 7.

[0077] S22, the pushing base 22 slides on the pushing rail 21, gradually moving toward the side close to the abutting core rod unit 6, and the first group of curved pipes 7 passes through the first feeding assembly 32, the feeding sleeve 31, the second feeding assembly 33 and the sleeve assembly 42 in sequence.

[0078] S3, the first feeding assembly 32 and the second feeding assembly 33 are tightened, and the pushing base 22 slides toward the side close to the bending unit 5, so that the first group of bending pipes 7 enter the interior of the guide mold assembly 51;

[0079] S31, the multiple groups of first clamping jaws 323 rotate relative to the first chuck 322 to keep the first feeding assembly 32 in a tightened state, and the multiple groups of second clamping jaws 333 rotate relative to the second chuck 332 to keep the second feeding assembly 33 in a tightened state.

[0080] S32, the pushing base 22 slides on the pushing slide rail 21 and gradually moves toward the side of the bending unit 5, so that the first group of bent pipes 7 enter the guide mold assembly 51, and the guide mold assembly 51 guides the bent pipes 7 to abut against the wheel mold assembly 52.

[0081] S4, the pushing base 22 continues to slide toward the side close to the bending unit 5, and the first group of bent pipes 7 are bent under the cooperation of the wheel mold assembly 52 and the swing arm assembly 53.

[0082] S41, the pushing base 22 slides on the pushing rail 21 and continues to move toward the side close to the bending unit 5, the wheel die assembly 52 rotates to drive the bending 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 bending pipes 7.

[0083] S5, the first group of bent pipes 7 are disengaged from the second feeding assembly 33, the second feeding assembly 33 remains in an open state, the telescopic assembly 41 drives the sleeve assembly 42 to move toward the side close to the bending unit 5, and sleeves the ends of the first group of bent pipes 7.

[0084] S51, during the bending process of the first group of bent tubes 7, the end portion thereof escapes from the second feeding assembly 33, and at this time, the plurality of groups of second clamping jaws 333 rotate relative to the second clamping plate 332 to keep the second feeding assembly 33 in an open state.

[0085] S52, the telescopic cylinder 412 is telescoped to drive the sliding connecting rod 413 to slide inside the mounting block 414, so that the sleeve assembly 42 moves toward the end of the first group of curved pipes 7.

[0086] S53, after the sleeve assembly 42 is sleeved on the outer side wall of the end of the first group of curved pipes 7, the multiple groups of sleeve modules 427 arranged around the sleeve ring 422 are tightened to abut against the outer side wall of the first group of curved pipes 7.

[0087] S54, when the first group of bent pipes 7 continue to bend, 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 rotates synchronously with the first group of bent pipes 7.

[0088] S6. The first feeding assembly 32 is opened, and the second group of curved tubes 7 are inserted into the first feeding assembly 32. The abutment member 64 abuts against the second group of curved tubes 7. The pushing base 22 slides toward the side close to the abutment core rod unit 6, so that the second group of curved tubes 7 pass through the first feeding assembly 32, the feeding sleeve 31, and the second feeding assembly 33 in sequence.

[0089] S61, the multiple groups of first clamping jaws 323 rotate relative to the first clamping plate 322 to keep the first feeding assembly 32 in an open state, and during the bending process of the first group of bent tubes 7, the second group of bent tubes 7 are inserted into the first feeding assembly 32.

[0090] S62, after the second group of curved pipes 7 are inserted into the first feeding assembly 32, the abutment mounting frame 62 slides relative to the abutment slide groove 61, and the position of the abutment member 64 is adjusted so that the end of the abutment member 64 is inserted into the second group of curved pipes 7 and abuts against the second group of curved pipes 7.

[0091] S63, the pushing base 22 slides on the pushing rail 21, and gradually moves toward the side close to the abutting core rod unit 6, and the second group of bent pipes 7 passes through the first feeding assembly 32, the feeding sleeve 31, and the second feeding assembly 33 in sequence.

[0092] S7, the telescopic assembly 41 drives the sleeve assembly 42 to move toward the side close to the second feeding assembly 33 for resetting.

[0093] S71, the telescopic cylinder 412 is telescoped to drive the sliding connecting rod 413 to slide inside the mounting block 414, so that the sleeve assembly 42 moves toward the side close to the second feeding assembly 33, and the reset is completed.

[0094] S8, the second group of bent pipes 7 continue to repeat the feeding and bending operation of the first group of bent pipes 7.

[0095] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. An automatic pipe bending machine capable of follow-up feeding, characterized in that: It comprises a frame (1), with a workbench (11) installed on the top of the frame (1); A material pushing unit (2), the material pushing unit (2) comprising a material pushing base (22) slidably mounted on the top of the workbench (11) via a material pushing slide rail (21), a material pushing frame (23) mounted on the top of the material pushing base (22), and a flexible material feeding component (26) arranged through the workbench (11); A follower feeding unit (3), the follower feeding unit (3) comprising a feeding sleeve (31) provided through the pushing frame (23), a first feeding assembly (32) installed at one end of the feeding sleeve (31), and a second feeding assembly (33) installed at the other end of the feeding sleeve (31); A sleeve unit (4), the sleeve unit (4) comprising a telescopic component (41) mounted on the top of the pusher base (22) and a sleeve component (42) connected to the end of the telescopic component (41); A pipe bending unit (5), the pipe bending unit (5) comprising a guide die assembly (51) capable of guiding the pipe bend (7), a wheel die assembly (52) mounted on an end of the frame (1), and a swing arm assembly (53) mounted on a side wall of the frame (1); An abutting mandrel unit (6), the abutting mandrel unit (6) being arranged on an end of the frame (1) away from the bending tube unit (5), the abutting mandrel unit (6) comprising an abutting slide groove (61) mounted on the top of the workbench (11), an abutting mounting frame (62) slidably mounted on the top of the abutting slide groove (61), an abutting cylinder (63) arranged through the abutting mounting frame (62), and an abutting member (64) connected to the abutting cylinder (63); Wherein, a curved pipe (7) is arranged inside the follower feeding unit (3), and the curved pipe (7) passes through the sleeve assembly (42); The feeding sleeve (31) is configured as a hollow cylindrical structure whose inner diameter matches the outer diameter of the bent pipe (7); the feeding sleeve (31) is sleeved with a first feeding component (32) at one end close to the abutting core rod unit (6), and is sleeved with a second feeding component (33) at one end close to the sleeve unit (4); The first feeding assembly (32) comprises a first feeding sleeve (321) sleeved on the outer wall of the feeding sleeve (31), a first chuck (322) being inserted into the interior of the first feeding sleeve (321), and a first chuck (322) being rotatably connected to one end away from the feeding sleeve (31) with a plurality of first clamping jaws (323); The second feeding assembly (33) comprises a second feeding sleeve (331) sleeved on the outer wall of the feeding sleeve (31), a second chuck (332) being inserted into the interior of the second feeding sleeve (331), and a second chuck (332) being rotatably connected to one end away from the feeding sleeve (31) with a plurality of sets of second clamping jaws (333); The ends of the plurality of groups of the first clamping jaws (323) are all configured as arc structures whose inner walls are adapted to the shape of the curved tube (7), and the ends of the plurality of groups of the second clamping jaws (333) are all configured as arc structures whose inner walls are adapted to the shape of the curved tube (7); The telescopic assembly (41) comprises a mounting frame (411) mounted on one side of the material pushing frame (23); the mounting frame (411) is mounted on the top of the material pushing frame (23), and a telescopic cylinder (412) is mounted on the top of the mounting frame (411); the output end of the telescopic cylinder (412) is connected to a sliding connecting rod (413); and the end of the sliding connecting rod (413) away from the telescopic cylinder (412) is connected to a sleeve assembly (42); The sleeve assembly (42) comprises a connecting plate (421) connected to a sliding connecting rod (413); a rack ring (423) with a circular ring structure is rotatably mounted on the side of the connecting plate (421) away from the telescopic assembly (41) via a guide roller (426); a sleeve ring (422) with a shape matching the rack ring (423) is mounted on the side of the rack ring (423) away from the connecting plate (421); and a plurality of sleeve modules (427) are arranged around the sleeve ring (422) and can abut against the outer wall of the bent pipe (7).

2. The automatic pipe bending machine capable of follow-up feeding according to claim 1 is characterized in that: The push rails (21) are symmetrically arranged in two groups about the longitudinal axis of the workbench (11); a push rack (23) is arranged at the top center of the push base (22) along the longitudinal direction of the frame (1); and a swing assembly (25) is rotatably connected to one end of the push rack (23) close to the sleeve unit (4); The flexible feeding components (26) are arranged at one end of the pushing frame (23) close to the bending unit (5), and two groups are arranged along the length direction of the workbench (11).

3. The automatic pipe bending machine capable of follow-up feeding according to claim 2 is characterized in that: The flexible feeding assembly (26) comprises a flexible guide roller (261) capable of guiding the bent pipe (7) and a lifting cylinder (262) mounted at the bottom of the workbench (11); a through hole having an inner diameter matching the outer diameter of the feeding sleeve (31) is formed through the pushing frame (23); and a rotating assembly (24) capable of driving the bent pipe (7) to rotate is mounted at the end thereof away from the flexible feeding assembly (26).

4. The automatic pipe bending machine capable of follow-up feeding according to claim 3 is characterized in that: The wheel die assembly (52) is mounted on an end portion of the frame (1) away from the abutting core rod unit (6), and its bottom is rotatably connected to a swing arm assembly (53) capable of bending the bent pipe (7); the guide die assembly (51) is mounted on a side of the wheel die assembly (52) away from the swing arm assembly (53) and is arranged along the length direction of the workbench (11).

5. The automatic pipe bending machine capable of follow-up feeding according to claim 4 is characterized in that: The abutting slide groove (61) is arranged along the width direction of the workbench (11), and the abutting member (64) is arranged on a side wall of the abutting mounting frame (62) close to the follower feeding unit (3) and is arranged as a cylindrical structure that matches the shape of the bent pipe (7).

6. A feeding method for an automatic pipe bending machine capable of follow-up feeding, using the automatic pipe bending machine capable of follow-up feeding as claimed in claim 5, characterized in that: The following steps are involved: S1, the pushing base (22) slides toward the side close to the bending tube unit (5) to insert the first group of bending tubes (7) into the first feeding assembly (32); S2, the abutment member (64) abuts against the first group of bent pipes (7), and the pusher base (22) slides toward the side close to the abutment core rod unit (6), so that the first group of bent pipes (7) pass through the first feeding assembly (32), the feeding sleeve (31), the second feeding assembly (33) and the sleeve assembly (42) in sequence; S3, the first feeding assembly (32) and the second feeding assembly (33) are tightened, and the pushing base (22) slides toward the side close to the bending unit (5), so that the first group of bending pipes (7) enter the interior of the guide mold assembly (51); S4, the pusher base (22) continues to slide toward the side close to the pipe bending unit (5), and the first group of pipe bends (7) are bent in cooperation with the wheel mold assembly (52) and the swing arm assembly (53); S5, the first group of curved pipes (7) are released from the second feeding assembly (33), the second feeding assembly (33) remains in an open state, the telescopic assembly (41) drives the sleeve assembly (42) to move toward the side close to the curved pipe unit (5), and sleeves the ends of the first group of curved pipes (7); S6, the first feeding assembly (32) is opened, the second group of curved tubes (7) are inserted into the first feeding assembly (32), the abutment member (64) abuts against the second group of curved tubes (7), and the pushing base (22) slides toward the side close to the abutment core rod unit (6), so that the second group of curved tubes (7) pass through the first feeding assembly (32), the feeding sleeve (31), and the second feeding assembly (33) in sequence; S7, the telescopic assembly (41) drives the sleeve assembly (42) to move toward the side close to the second feeding assembly (33) to reset; S8, the second group of bent pipes (7) continues to repeat the feeding and bending operation of the first group of bent pipes (7).

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