Bending equipment for wheelchair processing

Abstract

This invention relates to the field of wheelchair processing equipment, and discloses a bending device for wheelchair processing, including a processing table. A cylindrical body is fixedly installed on one side of the processing table, and a rotating shaft is movably installed inside the cylindrical body. The upper and lower outer diameters of the rotating shaft are respectively fixedly installed at both ends of an I-beam bracket. A main clamping mold is fixedly installed on one side of the top of the I-beam bracket, and a first telescopic cylinder is fixedly installed on the other side of the top of the I-beam bracket. A movable block is fixedly installed at the drive end of the first telescopic cylinder. A guide clamping mold is provided on the side of the movable block near the main clamping mold. A vertical frame is fixedly installed inside the movable block, and rotating frames are movably installed at both ends of the vertical frame. This invention can provide uniform and stable clamping force to protect the tubing, reduce bending force and springback through heating, adjust the clamping force to adapt to multiple tubing models, achieve continuous processing, has high efficiency and small footprint, and ensures processing quality.

Description

Technical Field

[0001] This invention relates to the field of wheelchair processing equipment, specifically bending equipment for wheelchair processing. Background Technology

[0002] In the wheelchair manufacturing process, tubing bending is a crucial step that directly affects the wheelchair's structural strength, appearance quality, and safety. With increasing societal attention to people with disabilities and mobility impairments, the market demand for wheelchairs continues to grow, leading to increasingly higher quality requirements. This places higher performance standards on tubing bending equipment.

[0003] Traditional wheelchair tubing bending equipment has several shortcomings in practical applications. Firstly, in the tubing clamping stage, most equipment uses a rigid clamping structure, making precise control of the clamping force difficult. When dealing with tubing of different diameters and materials, either insufficient clamping force causes the tubing to slip during bending, affecting bending accuracy; or excessive clamping force causes wear, deformation, and even cracks on the tubing's outer wall, severely reducing product yield. This rigid clamping method is particularly effective for thin-walled tubing, significantly hindering the advancement of lightweight wheelchair design.

[0004] Secondly, the springback phenomenon of the tubing during bending is a significant factor affecting bending quality. Traditional equipment often lacks effective heating auxiliary devices, relying solely on mechanical force for bending. This not only requires greater driving force, increasing equipment energy consumption, but also results in significant springback of the tubing after bending, leading to deviations in the bending angle. This necessitates multiple subsequent corrections, reducing production efficiency and making it difficult to ensure consistency in mass production. Furthermore, forced bending can easily cause defects such as wrinkles and dents at the bending point, weakening the tubing's structural strength and posing safety hazards for wheelchair use.

[0005] In addition, existing bending equipment also has limitations in terms of adaptability and continuity. On the one hand, for pipes of different specifications, it is necessary to change the corresponding clamping molds and adjust the equipment parameters, which is cumbersome, time-consuming, and difficult to respond quickly to diverse production needs. On the other hand, most equipment cannot achieve continuous bending of pipes. After completing one bend, it is necessary to manually adjust the position or rotation angle of the pipe, which not only increases the labor intensity but also easily affects the processing accuracy due to human error, resulting in low production efficiency and making it difficult to meet the requirements of large-scale industrial production.

[0006] Furthermore, some bending equipment, due to unreasonable structural design, occupies a large area and is not flexible enough in workshop layout, increasing the cost of using production space. At the same time, the complex transmission structure of the equipment results in a high failure rate and difficult maintenance, further increasing the company's production costs. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a bending device for wheelchair processing, which solves problems such as uneven clamping force causing damage to wheelchair tubing during bending, excessive springback and wrinkles after bending, cumbersome adjustments when changing tubing specifications, difficulty in continuous processing, and large equipment footprint.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a bending device for wheelchair processing, comprising a processing table, a cylindrical body fixedly mounted on one side of the processing table, a rotating shaft movably mounted inside the cylindrical body, the upper and lower outer diameters of the rotating shaft being fixedly mounted at both ends of an I-beam bracket, a main clamping mold fixedly mounted on one side of the top of the I-beam bracket, a first telescopic cylinder fixedly mounted on the other side of the top of the I-beam bracket, a movable block fixedly mounted on the driving end of the first telescopic cylinder, a guide clamping mold provided on the side of the movable block near the main clamping mold, a vertical frame fixedly mounted inside the movable block, rotating frames movably mounted at both ends of the vertical frame, and the upper and lower inner diameters of the vertical frame being fixedly mounted on the main clamping mold. Each component has a first chamber. Spring plates are fixedly installed on both sides of the interior of each first chamber, with the ends of the spring plates extending into the interior of the corresponding rotating frame. A connecting rod is movably installed at one end of each rotating frame, and a push rod is movably installed at the end of each connecting rod. The end of each push rod extends to the outside of the movable block and is fixedly installed at one end of the guide clamp mold. A pressure roller is fixedly installed on one side of the interior of each rotating frame, with the inner end of the pressure roller abutting against the surface of the corresponding spring plate. Two positioning bearing seats are also fixedly installed at the top of the processing table via a bracket. A ceramic infrared heater is also fixedly installed at the top of the processing table, positioned between the positioning bearing seats and the cylinder.

[0009] Preferably, each of the first chambers has a threaded rod movably installed inside. Each threaded rod has a support platform threadedly connected to its outer diameter, and both sides of the support platform abut against the surface of the spring plate. The frame has a second chamber inside. Each of the upper and lower sides of the second chamber has a short shaft movably installed inside, and the outer ends of the short shafts are fixedly connected to the inner ends of the corresponding threaded rods. Each inner end of the short shaft is fixedly installed with a driven bevel gear. An adjusting shaft is movably installed on one side of the frame. The inner end of the adjusting shaft is fixedly installed with a driving bevel gear, and the driving bevel gear meshes with the inner ends of the two driven bevel gears. The outer end of the adjusting shaft extends to the outside of the movable block and is fixedly installed with an adjusting handwheel.

[0010] Preferably, a transmission gear is fixedly installed on the lower outer diameter of the rotating shaft, and a second telescopic cylinder is fixedly installed on one side of the bottom end of the processing table. A rack plate is fixedly installed on the driving end of the second telescopic cylinder, and the rack plate is meshed with the inner end of the transmission gear.

[0011] Preferably, the inner ring of the positioning bearing seat is fixedly installed on both sides of the two connecting plates. A guide wheel frame is movably installed on the inner side of the rear connecting plate. Several first guide wheels are movably installed inside the guide wheel frame. A third telescopic cylinder is fixedly installed on the outer side of the rear connecting plate. The drive end of the third telescopic cylinder is fixedly installed in the middle of the guide wheel frame.

[0012] Preferably, a plurality of drive shafts are movably mounted on the inner end of the front connecting plate. A second guide wheel is fixedly mounted on the outer diameter of the middle part of each drive shaft. A drive wheel is fixedly mounted on the top end of each drive shaft, and the outer diameters of the drive wheels are connected by a drive belt. A first motor is fixedly mounted on the outer end of the front connecting plate. A first drive gear is fixedly mounted on the drive end of the first motor. A first driven gear is fixedly mounted on the bottom end of the middle drive shaft, and the first driven gear meshes with the inner end of the first drive gear.

[0013] Preferably, a second motor is fixedly installed on the top of one side of the positioning bearing housing, and a fixing ring is fixedly installed on the outer end of the inner ring of the other side of the positioning bearing housing. A second driven gear is fixedly installed on the outer diameter of the fixing ring, and the second driven gear meshes with the inner end of the second driving gear.

[0014] This invention provides a bending device for wheelchair processing. It has the following beneficial effects:

[0015] 1. This invention employs a clamping structure combining a main clamping mold and a guide clamping mold, along with the coordinated action of components such as a rotating frame, spring plate, and pressure roller, to provide a uniform and stable clamping force for the pipe. When the guide clamping mold is under force, the rotating frame bends, causing the pressure roller to bend the spring plate. The reaction force of the spring plate pushes the guide clamping mold to continuously clamp the pipe, while the displacement of the pressure roller with the bending of the spring plate compensates for changes in elasticity, ensuring uniform clamping force throughout the process. Simultaneously, the inherent elasticity of the spring plate ensures both effective clamping and prevents wear and deformation of the pipe's outer wall due to excessive clamping force, effectively improving the quality of subsequent forming.

[0016] 2. The ceramic infrared heater equipped in this invention can precisely heat the bending part of the tube. This design not only reduces the force required for bending, but also significantly suppresses the springback phenomenon of the tube after bending, reduces the generation of wrinkles and deformation, and makes the shape of the bending part more regular and the size more accurate, meeting the strict requirements of wheelchair tubes for bending accuracy.

[0017] 3. This invention achieves automatic feeding and rotation of the pipe by using a first motor and a second motor in conjunction with corresponding transmission structures, ensuring the continuity of bending processing and effectively improving production efficiency. At the same time, this integrated transmission design avoids complex, large drive components, significantly reducing the equipment's footprint and facilitating better workshop space planning and layout. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the cylindrical body in this invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the cylinder in this invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the active block in this invention;

[0022] Figure 5 This is a schematic diagram of the internal structure of the second chamber in this invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the positioning bearing housing in this invention;

[0024] Figure 7 This is a side view of the positioning bearing housing in this invention;

[0025] Figure 8 This is a bottom-view perspective view of the present invention.

[0026] The components include: 1. Processing table; 2. Cylinder; 3. Rotating shaft; 4. I-beam support; 5. Main clamping mold; 6. First telescopic cylinder; 7. Movable block; 8. Guide clamping mold; 9. Stand; 10. Rotating frame; 11. First chamber; 12. Spring plate; 13. Connecting rod; 14. Push rod; 15. Pressure roller; 16. Threaded rod; 17. Support table; 18. Second chamber; 19. Short shaft; 20. Driven bevel gear; 21. Adjusting shaft; 22. Driving bevel gear; 23. Adjusting handwheel; 24. Transmission... 25. Driven gear; 26. Second telescopic cylinder; 27. Rack plate; 28. Positioning bearing seat; 29. ​​Connecting plate; 20. Guide wheel frame; 31. First guide wheel; 32. Third telescopic cylinder; 33. Drive shaft; 34. Second guide wheel; 35. Drive wheel; 36. Drive belt; 37. First motor; 38. First drive gear; 39. Second motor; 40. Second drive gear; 41. Fixed ring; 42. Second driven gear; 43. Ceramic infrared heater. Detailed Implementation

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example

[0029] Please see the appendix Figure 1 - Appendix Figure 8 This invention provides a bending device for wheelchair processing, such as... Figure 1As shown, the equipment includes a processing table 1, which serves as the basic load-bearing structure for the entire device. All components are directly or indirectly mounted on the processing table 1, providing stable support for the processing. A cylindrical body 2 is fixedly mounted on one side of the processing table 1. The cylindrical body 2 provides a closed rotation space for the rotating shaft 3, ensuring the stability of the rotating shaft 3 during rotation and preventing interference from external factors. The rotating shaft 3 is movably mounted inside the cylindrical body 2. The rotating shaft 3 is the core rotating component that realizes the bending action. Its rotation drives the I-beam support 4 and related clamping components to rotate synchronously, thereby completing the bending of the pipe. The upper and lower outer diameters of the rotating shaft 3 are fixedly mounted at both ends of the I-beam support 4. The I-beam support 4 connects the rotating shaft 3 with the main clamping mold 5 and the first telescopic cylinder 6, stably transmitting the rotational force of the rotating shaft 3 to ensure stability. The bending force is effectively applied to the pipe. A main clamping mold 5 is fixedly installed on one side of the top of the I-beam support 4. The main clamping mold 5 serves as a fixed clamping component and cooperates with the guide clamping mold 8 to form a clamping space, providing a stable reference point for pipe bending. A first telescopic cylinder 6 is fixedly installed on the other side of the top of the I-beam support 4. The first telescopic cylinder 6 is the power source for driving the movement of the guide clamping mold 8. Through its telescopic movement, it drives the movable block 7 and subsequent components to achieve clamping and loosening of the pipe. A movable block 7 is fixedly installed on the driving end of the first telescopic cylinder 6. The movable block 7 is the intermediate carrier connecting the first telescopic cylinder 6 and the guide clamping mold 8. Components such as the upright frame 9 are installed inside to convert the telescopic force into clamping force. The guide clamping mold 8 is set on the side of the movable block 7 closest to the main clamping mold 5. Driven by a telescopic cylinder 6, the tube moves closer to the main clamping mold 5 and clamps the tube together with the main clamping mold 5. Its position can be adjusted according to the tube specifications. A support frame 9 is fixedly installed inside the movable block 7. The support frame 9 provides installation support for components such as the rotating frame 10 and the spring plate 12, ensuring that these components maintain a stable relative position when under force and ensuring smooth force transmission. Rotating frames 10 are movably installed at both ends of the support frame 9. The rotating frames 10 can rotate around the support frame 9. When the movable block 7 moves it, the rotating frame 10 will bend, and then act on the spring plate 12 through the pressure roller 15. The upper and lower sides of the inside of the support frame 9 are provided with first chambers 11. The first chambers 11 provide installation and deformation space for the spring plate 12, restrict the deformation direction of the spring plate 12, and ensure its elastic function. Force can be effectively transmitted. Spring plates 12 are fixedly installed on both sides of the interior of the first chamber 11, with the ends of the spring plates 12 extending into the interior of the corresponding rotating frame 10. The spring plates 12 have good elasticity and will bend when the rotating frame 10 is squeezed by the pressure roller 15, generating a reaction force. This ensures that the clamping force of the guide clamp mold 8 on the pipe remains uniform, preventing damage to the pipe. A connecting rod 13 is movably installed at one end of each rotating frame 10. The connecting rod 13 acts as a force transmission medium, converting the movement of the rotating frame 10 into the linear movement of the push rod 14, ensuring the smooth movement of the guide clamp mold 8. A push rod 14 is movably installed at the end of each connecting rod 13, directly connecting to the guide clamp mold 8. The force transmitted by the connecting rod 13 is applied to the guide clamp mold 8, enabling the guide clamp mold 8 to accurately clamp the pipe.The ends of push rods 14 extend to the outside of movable blocks 7 and are fixedly installed at one end of guide clamp mold 8. This connection method ensures direct force transmission, reduces losses, and makes the clamping action efficient and reliable. Pressure rollers 15 are fixedly installed on one side of the inner side of rotating frame 10, and the inner ends of pressure rollers 15 abut against the surface of the corresponding side spring plate 12. When rotating frame 10 bends, pressure rollers 15 roll on the surface of spring plate 12. As the degree of bending of spring plate 12 increases, pressure rollers 15 move to extend the lever arm, compensate for the change in elasticity of spring plate 12, and ensure the clamping force throughout the entire process. The processing table 1 is uniformly equipped with two positioning bearing seats 27 fixedly mounted on its top via a bracket. These bearing seats 27 guide and position the pipe, ensuring it maintains the correct posture during transport and bending, preventing deviation that could affect accuracy. A ceramic infrared heater 43 is also fixedly mounted on the top of the processing table 1, positioned between the positioning bearing seats 27 and the cylinder 2. The ceramic infrared heater 43 heats the bent portion of the pipe, reducing the bending force required, suppressing springback, minimizing wrinkles and deformation, and improving bending quality.

[0030] In this embodiment, threaded rods 16 are movably installed inside the first chamber 11. When the threaded rods 16 rotate, they can drive the support platform 17 to move, thereby changing the support position of the support platform 17 on the spring plate 12. The outer diameter of the threaded rods 16 is threadedly connected to the support platform 17, and both sides of the support platform 17 abut against the surface of the spring plate 12. By changing the support point, the support platform 17 adjusts the elastic force of the spring plate 12 when it bends, so as to adapt to the clamping force requirements of different types of pipes. The inside of the upright 9 is provided with a second chamber 18. The second chamber 18 provides installation space for transmission components such as short shafts 19 and bevel gears, ensuring that the transmission structure is compact and stable. Short shafts 19 are movably installed on both the upper and lower sides inside the second chamber 18, and the outer ends of the short shafts 19 are fixedly connected to the inner ends of the corresponding threaded rods 16. The short shafts 19 transmit the rotational force of the driven bevel gear 20 to the threaded rods 16, so that the threaded rods 16 rotate synchronously. Driven bevel gears 20 are fixedly installed on the inner end of the short shaft 19. The driven bevel gears 20 mesh with the driving bevel gears 22, converting the rotational motion of the adjusting shaft 21 into the rotation of the short shaft 19. The adjusting shaft 21 is movably installed on one side of the inside of the stand 9. The adjusting shaft 21 is the operating shaft for adjusting the position of the support platform 17. By rotating the adjusting shaft 21, the driving bevel gear 22 can be driven to rotate. The driving bevel gear 22 is fixedly installed on the inner end of the adjusting shaft 21, and the driving bevel gear 22 is meshed with the inner ends of the two driven bevel gears 20. The driving bevel gear 22 drives the two driven bevel gears 20 at the same time, realizing the synchronous adjustment of the upper and lower threaded rods 16, ensuring that the support platform 17 moves in a consistent manner. The outer end of the adjusting shaft 21 extends to the outside of the movable block 7 and is fixedly installed with an adjusting handwheel 23. The adjusting handwheel 23 allows the operator to manually rotate the adjusting shaft 21 to conveniently adjust the clamping force and adapt to the processing of different pipe materials.

[0031] Furthermore, a transmission gear 24 is fixedly installed on the lower outer diameter of the rotating shaft 3. The transmission gear 24 meshes with the rack plate 26, converting the linear motion of the rack plate 26 into the rotational motion of the rotating shaft 3. A second telescopic cylinder 25 is fixedly installed on one side of the bottom end of the processing table 1. When the second telescopic cylinder 25 extends or retracts, it drives the rack plate 26 to move, which in turn drives the rotating shaft 3 to rotate through the transmission gear 24, providing power for bending. The rack plate 26 is fixedly installed on the driving end of the second telescopic cylinder 25, and the rack plate 26 meshes with the inner end of the transmission gear 24. The rack plate 26 moves linearly under the drive of the second telescopic cylinder 25, which in turn drives the transmission gear 24 and the rotating shaft 3 to rotate, thus realizing the bending action.

[0032] Furthermore, the inner ring of the positioning bearing seat 27 is fixedly installed on both ends of the two connecting plates 28. The connecting plates 28 connect the two positioning bearing seats 27 and provide a mounting base for the guide wheel frame 29, drive shaft 32, etc. The guide wheel frame 29 is movably installed on the inner end of the rear connecting plate 28. The guide wheel frame 29 moves under the drive of the third telescopic cylinder 31, driving the first guide wheel 30 to approach the second guide wheel 33 to achieve pipe clamping. Several first guide wheels 30 are movably installed inside the guide wheel frame 29. The first guide wheels 30 and the second guide wheels 33 cooperate to clamp the pipe and reduce friction damage as the pipe rotates. The third telescopic cylinder 31 is fixedly installed on the outer end of the rear connecting plate 28. The third telescopic cylinder 31 drives the guide wheel frame 29 to move and adjust the distance between the first guide wheel 30 and the second guide wheel 33 to adapt to pipes of different diameters. The drive end of the third telescopic cylinder 31 is fixedly installed in the middle of the guide wheel frame 29 to ensure that the guide wheel frame 29 is evenly stressed and moves smoothly, thus ensuring the clamping effect.

[0033] Furthermore, several drive shafts 32 are movably mounted on the inner end of the front connecting plate 28. The drive shafts 32 support the second guide wheels 33 and simultaneously transmit the power of the first motor 36 to the second guide wheels 33. Second guide wheels 33 are fixedly mounted on the outer diameter of the middle portion of each drive shaft 32. The second guide wheels 33 cooperate with the first guide wheels 30 to clamp and transport the pipe, achieving automatic pipe feeding. Drive wheels 34 are fixedly mounted on the top of each drive shaft 32, and the outer diameters of the drive wheels 34 are connected by drive belts 35. The drive wheels 34 and drive belts 35 cause all drive shafts 32 to rotate synchronously, ensuring that the second guide wheels 33 rotate at the same speed and avoiding… The pipe is offset, and a first motor 36 is fixedly installed on the outer end of the front connecting plate 28. The first motor 36 provides power for pipe conveying and drives the second guide wheel 33 to rotate through the transmission structure to ensure processing continuity. A first driving gear 37 is fixedly installed on the drive end of the first motor 36. The first driving gear 37 meshes with the first driven gear 38 to transmit power to the middle transmission shaft 32. The bottom end of the middle transmission shaft 32 is fixedly installed with the first driven gear 38, and the first driven gear 38 meshes with the inner end of the first driving gear 37 to realize the transmission of power from the first motor 36 to the transmission shaft 32 and ensure transmission efficiency.

[0034] Furthermore, a second motor 39 is fixedly installed on the top of one side of the positioning bearing seat 27. The second motor 39 provides power for the rotation of the pipe, enabling the pipe to be bent continuously at multiple angles. A fixing ring 41 is fixedly installed on the outer end of the inner ring of one side of the positioning bearing seat 27. The fixing ring 41 connects the second driven gear 42 to the inner ring of the positioning bearing seat 27, so that the second driven gear 42 rotates and drives the inner ring to rotate. The second driven gear 42 is fixedly installed on the outer diameter of the fixing ring 41 and meshes with the inner end of the second driving gear 40. The second driven gear 42 transmits the power of the second motor 39 to the fixing ring 41 and the inner ring of the positioning bearing seat 27, driving the pipe to rotate, which facilitates continuous bending.

[0035] Working principle: The wheelchair tubing material to be bent is passed through the space between the two positioning bearing seats 27 and extends to one side of the main clamping mold 5. Then, the third telescopic cylinder 31 is activated, which drives the guide wheel frame 29 to move inward, causing all the first guide wheels 30 to move. The cooperation of the first guide wheels 30 and the second guide wheels 33 completes the clamping of the tubing. Then, the first motor 36 is activated, which drives the first drive gear 37 to rotate, causing the first driven gear 38 and one of the drive shafts 32 to rotate. The drive shaft 32, through the drive wheel 34 and the drive belt 35, drives all the drive shafts 32 and the second guide wheels 33 to rotate, thereby controlling the forward movement of the tubing. The tubing passes through the interior of the ceramic infrared heater 43, utilizing... The ceramic infrared heater 43 heats the bent section of the pipe, which not only reduces the bending force required but also significantly suppresses the springback of the pipe after bending, reducing wrinkling deformation. The bent section is then moved to one side of the main clamping mold 5. The first telescopic cylinder 6 is activated, driving the movable block 7 to move. Using the action of the connecting rod 13 and the push rod 14, the guide clamping mold 8 moves, facilitating the clamping of the pipe by the guide clamping mold 8 and the main clamping mold 5. The first telescopic cylinder 6 continues to drive the movable block 7 to move. At this time, the guide clamping mold 8 and the push rod 14 are subjected to force, causing the connecting rod 13 to bend the rotating frame 10. When the rotating frame 10 bends, the pressure roller 15 bends the spring plate 12. The reaction force generated by the bent spring plate 12 pushes the push rod 14 and the guide clamping mold 8 to continue moving forward. The internal movement clamps the pipe. Furthermore, during the bending process, the pressure roller 15 displaces on the surface of the spring plate 12. As the bending degree of the spring plate 12 increases, the movement of the pressure roller 15 causes the lever arm of the bent spring plate 12 to also increase, thus compensating for the increasing elastic force of the spring plate 12 as the bending degree increases. This ensures that the reaction force applied by the spring plate 12 to the guide clamping mold 8 remains uniform throughout the process. The spring plate 12 itself has a large elastic force, maintaining the clamping force on the pipe without causing wear and deformation of the pipe's outer wall due to excessive clamping force, improving the subsequent forming quality. Additionally, the adjusting handwheel 23 can be rotated to drive the adjusting shaft 21 and the driving bevel gear 22 to rotate. The rotating driving bevel gear 22 will... The two driven bevel gears 20 and the short shaft 19 rotate, which in turn rotates the two threaded rods 16. When the threaded rods 16 rotate, they cause the support platform 17 on the outer diameter to move outwards or inwards synchronously, thus changing the support point of the spring plate 12. When the support point changes, the elastic force generated when bending with the same force also changes accordingly, allowing adjustment of the clamping force according to different pipe models. After clamping is completed, the second telescopic cylinder 25 is activated, driving the rack plate 26 to move, which in turn drives the transmission gear 24 to rotate, thereby driving the rotating shaft 3 to rotate. The rotating shaft 3 then drives the I-beam bracket 4, the main clamping mold 5, and the guide clamping mold 8 to rotate, thus performing the bending operation on the pipe. When the pipe needs to be rotated, the second motor 39 drives the second drive gear 40 to rotate.The second driven gear 42 and the fixed ring 41 rotate, which in turn rotates the inner ring of the positioning bearing seat 27, and consequently rotates the connecting plate 28 and the clamped pipe. This facilitates continuous bending of the pipe. The first motor 36 and the second motor 39, in conjunction with a corresponding transmission structure, control the feeding and rotation of the pipe, maintaining the continuity of the pipe bending process while significantly reducing the equipment's footprint.

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

Claims

1. A bending machine for wheelchair processing, comprising a processing table (1), characterized in that, A cylindrical body (2) is fixedly installed on one side of the processing table (1). A rotating shaft (3) is movably installed inside the cylindrical body (2). The upper and lower outer diameters of the rotating shaft (3) are fixedly installed at both ends of an I-beam bracket (4). A main clamping mold (5) is fixedly installed on one side of the top of the I-beam bracket (4). The I-beam bracket (4) serves to connect the rotating shaft (3) and the main clamping mold (5). A first telescopic cylinder (6) is fixedly installed on the other side of the top of the I-beam bracket (4). A movable block (7) is fixedly installed at the drive end of the first telescopic cylinder (6). A guide clamping mold (8) is provided on the side of the movable block (7) near the main clamping mold (5). A vertical frame (9) is fixedly installed inside the movable block (7). A rotating frame (10) is movably installed at both ends of the vertical frame (9). A first chamber (11) is opened on both the upper and lower sides of the vertical frame (9). Spring plates (12) are fixedly installed on both sides of the interior of the first chamber (11), and the ends of the spring plates (12) extend into the interior of the corresponding rotating frame (10). A connecting rod (13) is movably installed at one end of each of the two rotating frames (10). A push rod (14) is movably installed at the end of each connecting rod (13). The end of each push rod (14) extends to the outside of the movable block (7) and is fixedly installed at one end of the guide clamp mold (8). A pressure roller (15) is fixedly installed on one side of the interior of each rotating frame (10), and the inner end of the pressure roller (15) abuts against the surface of the corresponding spring plate (12). Two positioning bearing seats (27) are also fixedly installed at the top of the processing table (1) by means of a bracket. A ceramic infrared heater (43) is fixedly installed at the top of the processing table (1) at the position between the positioning bearing seat (27) and the cylinder (2). The inner rings of the two positioning bearing seats (27) are fixedly installed at the two ends of the two connecting plates (28). The inner end of the rear connecting plate (28) is movably installed with a guide wheel frame (29). Several first guide wheels (30) are movably installed inside the guide wheel frame (29). The outer end of the rear connecting plate (28) is fixedly installed with a third telescopic cylinder (31). The drive end of the third telescopic cylinder (31) is fixedly installed in the middle of the guide wheel frame (29).

2. The bending equipment for wheelchair processing according to claim 1, characterized in that, A threaded rod (16) is movably installed in the middle of the first chamber (11). A support platform (17) is threadedly connected to the outer diameter of the threaded rod (16), and both sides of the support platform (17) abut against the surface of the spring plate (12). A second chamber (18) is opened in the middle of the frame (9). A short shaft (19) is movably installed on the upper and lower sides of the interior of the second chamber (18), and the outer ends of the short shaft (19) are fixedly connected to the threaded rod (16) on the corresponding side. 6) The inner end of the short shaft (19) is fixedly equipped with a driven bevel gear (20). An adjusting shaft (21) is movably installed on one side of the inside of the upright frame (9). The inner end of the adjusting shaft (21) is fixedly equipped with a driving bevel gear (22), and the driving bevel gear (22) is meshed with the inner ends of the two driven bevel gears (20). The outer end of the adjusting shaft (21) extends to the outside of the movable block (7) and is fixedly equipped with an adjusting handwheel (23).

3. The bending equipment for wheelchair processing according to claim 1, characterized in that, A transmission gear (24) is fixedly installed on the lower outer diameter of the rotating shaft (3), and a second telescopic cylinder (25) is fixedly installed on one side of the bottom end of the processing table (1). A rack plate (26) is fixedly installed on the driving end of the second telescopic cylinder (25), and the rack plate (26) meshes with the inner end of the transmission gear (24).

4. The bending equipment for wheelchair processing according to claim 1, characterized in that, On the other side, a number of drive shafts (32) are movably installed on the inner end of the connecting plate (28). A second guide wheel (33) is fixedly installed on the outer diameter of the middle part of each drive shaft (32). A drive wheel (34) is fixedly installed on the top of each drive shaft (32), and the outer diameters of the drive wheels (34) are connected by a drive belt (35). On the other side, a first motor (36) is fixedly installed on the outer end of the connecting plate (28). A first driving gear (37) is fixedly installed on the driving end of the first motor (36). A first driven gear (38) is fixedly installed on the bottom end of the middle drive shaft (32), and the first driven gear (38) meshes with the inner end of the first driving gear (37).

5. The bending equipment for wheelchair processing according to claim 1, characterized in that, A second motor (39) is fixedly installed on the top of the positioning bearing seat (27) on one side. A fixing ring (41) is fixedly installed on the outer end of the inner ring of the positioning bearing seat (27) on the same side. A second driven gear (42) is fixedly installed on the outer diameter of the fixing ring (41), and the second driven gear (42) meshes with the inner end of the second driving gear (40).

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