A bending die for motorcycle production

Abstract

This invention discloses a bending die for motorcycle production, relating to the field of pipe bending machine technology. It includes: a base, fixedly mounted on the ground, serving as the main support for various functional modules; and a feeding assembly, located on top of the base, used to precisely control the axial feed amount and circumferential rotation angle of the steel pipe. By incorporating a straightening assembly and utilizing a servo motor dual-drive linkage control component, the horizontal and vertical straightening components operate synchronously. This automatically adjusts the distance between the horizontal and vertical straightening wheels, thereby centering and straightening steel pipes of different specifications in all directions during the pipe feeding process. This effectively eliminates the initial deformation of the steel pipe, ensuring its straightness before entering the bending area, and thus improving the accuracy of subsequent bending and forming.

Description

Technical Field

[0001] This invention relates to the field of pipe bending machine technology, specifically a bending die for motorcycle production. Background Technology

[0002] The intelligent manufacturing equipment industry is a key direction for high-end equipment manufacturing and a foundation for the transformation and upgrading of the manufacturing industry. Traditional machining equipment is accelerating its transformation towards digitalization, automation, and intelligence. In the motorcycle manufacturing field, the frame, as the core skeleton of the vehicle, directly determines the safety and stability of the entire vehicle through its production quality. The frame is mainly assembled by welding multiple steel pipes bent at different angles; therefore, the steel pipe bending process is a crucial link in motorcycle manufacturing. Bending dies, as specialized tooling used to change the angle and shape of the pipes, directly determine the precision and strength of the frame. In existing steel pipe bending technology, mechanical pipe bending machines are typically used for cold bending of the steel pipes. This involves fixing one end of the steel pipe with a clamp and applying torque to the pipe using a rotating bending mechanism, forcing it to undergo plastic deformation around the die to obtain the desired bending angle. To improve processing efficiency, some automated pipe bending equipment also integrates functions such as automatic feeding and automatic clamping to achieve batch and standardized production of pipe fittings.

[0003] However, certain limitations still exist in the existing technology. For example, patent CN220760653U discloses a hydraulic single-head pipe bending machine. Although this device can heat the steel pipe through a heating component to assist bending and complete the bending action through the cooperation of positioning rollers and guide rollers, it still has shortcomings in terms of adaptability to steel pipes of different specifications and processing stability. Specifically: First, this prior art mainly relies on the cooperation of a single positioning roller and guide roller, lacking a comprehensive correction mechanism for the steel pipe before it enters the bending area. When the steel pipe to be processed has initial bending or ellipticity errors, it is difficult to automatically center and straighten it during the feeding process, which can easily lead to deviation of the steel pipe axis after bending. Second, the bending assistance method of this device is relatively simple, and no special auxiliary support components are set up. During the bending process of the steel pipe, the unbent tail section of the steel pipe is prone to warping or cross-sectional deformation due to unbalanced force, affecting the geometric accuracy of the finished product. Finally, the adjustment mechanism of this device is mostly independently controlled, which cannot achieve rapid, linkage-based adaptive clamping of steel pipes of different diameters, and the ease of operation needs to be improved. Summary of the Invention

[0004] Technical problems to be solved Existing technologies lack sufficient automatic centering and straightening capabilities during the steel pipe feeding process, and also lack effective support and protection for the unbent sections of the steel pipe during bending, making it difficult to guarantee processing accuracy and finished product quality.

[0005] Technical solution To achieve the above objectives, the present invention provides the following technical solution: a bending die for motorcycle production, comprising: The base is fixedly set on the ground and serves as the main support for each functional module; The feeding assembly, located on top of the base, is used to precisely control the axial feed amount and the circumferential rotation angle of the steel pipe. A correction component, disposed on the base and located in front of the feeding component, is used to perform multi-dimensional attitude correction on the steel pipe during the conveying process, so as to keep the steel pipe moving forward in a straight axial direction and eliminate initial deformation. A pipe bending assembly is located at the front end of the base and is used to perform a fixed-angle bending operation with the straightened steel pipe. An auxiliary component, disposed at the front end of the base and located on one side of the bending assembly, is used to apply clamping constraints to the non-bending section of the steel pipe during the bending process to ensure the overall integrity and stability of the steel pipe.

[0006] Furthermore, the feeding component includes: A pair of slide rails are parallel to and fixedly disposed on the top of the base along the length direction of the base; Slide 1 is slidably connected to slide rail 1 via a slider, and a support block is fixedly provided on its side; A pair of slide rails 2 are fixedly installed on the top of the slide plate 1, and the length direction of the slide rails 2 is perpendicular to the length direction of the slide rail 1; The feeder is slidably connected to the top of the slide rail two via a slider at the bottom, and the front end of the feeder is provided with a pipe clamp for clamping steel pipes; Hydraulic cylinder one, the cylinder body is fixedly connected to the top of the support block, and the end of its telescopic rod is fixedly connected to the side wall of the feeder, used to drive the feeder to make lateral displacement along the slide rail two.

[0007] Furthermore, a groove is provided on the upper surface of the base, and the groove is located at the center between the two slide rails. The feeding component further includes: A slide bar is fixedly connected to the center of the bottom of the slide plate one, and the slide bar extends into the slide groove one and slides in cooperation with the slide groove one; A drive rod is axially rotatably disposed inside the slide groove. A threaded groove is formed on the outer cylindrical surface of the drive rod. The drive rod passes through the slide bar and is threadedly engaged with the slide bar through the threaded groove. A support block is fixedly connected to the tail end face of the base; A servo motor is fixedly installed on the top of the support block. Its output shaft is connected to the end of the drive rod via a coupling. It is used to drive the drive rod to rotate and thus control the steel pipe to be fed precisely along the axial direction.

[0008] Furthermore, the corrective component includes: A pair of horizontal straightening elements are symmetrically arranged on both sides of the steel pipe conveying path to apply clamping force to the steel pipe from the horizontal direction for straightening. A pair of vertical straightening elements are set on the upper and lower sides of the steel pipe conveying path to apply clamping force to the steel pipe from the vertical direction for straightening. The linkage control component is built into the base, and its output end is connected to the horizontal correction component and the vertical correction component respectively, for driving the horizontal correction component and the vertical correction component to move synchronously in opposite directions or in opposite directions.

[0009] Furthermore, a pair of second sliding grooves are provided on the base, and the length direction of the second sliding groove is perpendicular to the length direction of the first sliding groove; The horizontal corrective component includes: A pair of slide rails three are respectively fixedly embedded in the inner bottom surface of the slide groove two; Each set of slide rails three has a pair of support columns slidably connected to its top, and the bottom end of the support column extends into the slide groove two and slides in cooperation with the slide groove two. A horizontal straightening wheel is rotatably connected to the top of the support column. The annular groove surfaces of the two opposing horizontal straightening wheels together form a horizontal limiting space that fits against the surface of the steel pipe.

[0010] Furthermore, the vertical straightening element includes: A pair of guide posts are vertically fixed to the top of the base; A movable frame, with a pair of movable frames slidably connected to each of the guide columns; Vertical straightening wheels are rotatably connected to each of the movable frames via a rotating shaft. A space is formed between two oppositely arranged vertical straightening wheels for the steel pipe to pass through, and the annular groove surface of the vertical straightening wheel is in contact with the surface of the steel pipe.

[0011] Furthermore, the vertical straightening component also includes: An adjusting rod is rotatably connected to the inner side of the guide column. The bottom end of the adjusting rod extends into the interior of the base. The adjusting rod has a threaded groove with symmetrical rotation direction. The adjusting rod passes through the ends of the two movable frames and is threadedly engaged with the movable frames through the threaded groove to drive the two movable frames to move closer or further apart. Conical wheel one is coaxially and fixedly connected to the bottom of each of the adjusting rods; The second worm gear is axially rotatably mounted inside the base; Conical wheel two is coaxially fixedly connected to both ends of worm gear two, and conical wheel two meshes with conical wheel one for transmission; The rotation of the worm gear 2 drives the cone wheel 2 to rotate in conjunction with the cone wheel 1, thereby controlling the two adjusting rods to rotate synchronously.

[0012] Furthermore, the leveling corrector also includes: A worm gear 1 is axially rotatably disposed inside the slide groove 2. Both ends of the worm gear 1 are provided with threaded grooves 2 with symmetrical helical directions. Both ends of the worm gear 1 pass through the support column and are threadedly engaged with the support column through the threaded grooves 2 to drive the support columns to move closer or further apart. The linkage control component includes: A rotating rod is axially rotatably disposed inside the base; A pair of worm gears are coaxially fixedly connected to the rotating rod and respectively mesh with the corresponding worm gear. A pair of worm gears are coaxially fixedly connected to the rotating rod and respectively mesh with the corresponding worm gears. Servo motor 2 is fixedly installed inside the base, and its output end is connected to the end of the rotary rod to provide synchronous driving force.

[0013] Furthermore, the pipe bending assembly includes: A support frame is fixedly connected to the front end of the base; A rotating frame is rotatably connected to the upper part of the support frame; A rotating shaft is fixedly inserted through the center of the rotating frame, and the bottom end of the rotating shaft is movably inserted through the support frame to guide the rotating frame to rotate around the center of the rotating shaft; A bending wheel, fixedly connected to the top of the rotating shaft, is used as a shaping mold for bending steel pipes; Hydraulic cylinder two, the cylinder body is hinged to the top of the rotating frame, and a bending block is fixedly connected to the end of its telescopic rod. The steel pipe is clamped and limited between the bending wheel and the bending block, so as to bend the steel pipe into shape during the rotation of the rotating frame. Servo motor three is fixedly installed at the bottom of the support frame, and its output end is connected to the bottom end of the rotating shaft for transmission.

[0014] Furthermore, the auxiliary components include: A fixing bracket is fixedly connected to the front side of the base; A pair of four slide rails are fixedly connected in parallel to the top of the fixed frame; The moving block is slidably connected to the top of the slide rail four via a slider; Hydraulic cylinder three, the cylinder body is fixedly connected to the top of the fixed frame and located between the two slide rails four, and the end of its telescopic rod is fixedly connected to the back side of the moving block; A movable strip is slidably connected to the front end face of the movable block, and a clamping block is fixedly connected to the end of the movable strip. The clamping block has a concave surface that matches the curvature of the steel pipe surface so as to keep the remaining section from deforming when the steel pipe is bent. Hydraulic cylinder four, the cylinder body is fixedly connected to the side of the moving block, and the end of its telescopic rod is fixedly connected to the moving bar; Hydraulic cylinder three is used to control the radial movement of the clamping block towards or away from the steel pipe, and hydraulic cylinder four is used to control the clamping block to make fine adjustments along the axial direction of the steel pipe.

[0015] Compared with existing technologies, this bending die for motorcycle production has the following advantages: I. This invention, by setting up a straightening component and utilizing a servo motor dual-drive linkage control device, drives the horizontal and vertical straightening components to operate synchronously. It can automatically adjust the distance between the horizontal and vertical straightening wheels, thereby centering and straightening steel pipes of different specifications in all directions during the steel pipe feeding process. This effectively eliminates the initial deformation of the steel pipe, ensures the straightness of the steel pipe before entering the bending area, and thus improves the accuracy of subsequent bending and forming.

[0016] Second, by setting up auxiliary components, the present invention uses a hydraulic cylinder to drive the clamping blocks to press down and clamp the steel pipe, and coordinates with a hydraulic cylinder to control the clamping blocks to move slightly along the axial direction of the steel pipe. This can provide stable support and guidance for the unbent section of the steel pipe during the bending process, effectively offsetting the bending torque, preventing the steel pipe from warping or deforming during the stress process, and significantly improving the quality and stability of bending and forming.

[0017] Third, by setting up a feeding component and adopting a threaded transmission structure of a servo motor, a drive rod, and a slide bar, this invention achieves precise control of the axial feed amount of the steel pipe. At the same time, combined with the structural design of a hydraulic cylinder driving the feeder to move laterally, it can flexibly adjust the rotation angle and lateral position of the steel pipe, meet the needs of complex bending processes for multi-degree-of-freedom feeding of the steel pipe, and improve the processing adaptability of the equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention from another perspective; Figure 3 This is a schematic diagram of the structure of the components of the present invention, excluding the base; Figure 4 For the present invention Figure 3 Another perspective structural diagram; Figure 5 This is a schematic diagram of the exploded structure of the correction component of the present invention; Figure 6 For the present invention Figure 5 Another perspective structural diagram; Figure 7 This is an exploded view of the feed assembly of the present invention; Figure 8 For the present invention Figure 7 Another perspective structural diagram; Figure 9 This is an exploded structural diagram of the pipe bending assembly and auxiliary assembly of the present invention; Figure 10 For the present invention Figure 9 Another perspective on the structure.

[0019] In the diagram: 1. Base; 2. Feeding assembly; 201. Slide rail one; 202. Slide plate one; 203. Slide rail two; 204. Feeder; 205. Hydraulic cylinder one; 206. Slide bar; 207. Drive rod; 208. Support block; 209. Servo motor one; 3. Correction assembly; 301. Slide rail three; 302. Support column; 303. Horizontal correction wheel; 304. Guide column; 305. Moving frame; 306. Vertical correction wheel; 307. Adjusting rod; 308. Conical wheel one; 309. Worm gear two; 310. Conical wheel two; 311. Worm gear 1. 312. Rotary rod; 313. Worm gear one; 314. Worm gear two; 315. Servo motor two; 4. Pipe bending assembly; 401. Support frame; 402. Rotating frame; 403. Rotating shaft; 404. Bending wheel; 405. Hydraulic cylinder two; 406. Servo motor three; 5. Auxiliary components; 501. Fixed frame; 502. Slide rail four; 503. Moving block; 504. Hydraulic cylinder three; 505. Moving bar; 506. Hydraulic cylinder four; 507. Clamping block; 6. Steel pipe; 7. Support block; 8. Pipe fitting clamp; 9. Slide groove one; 10. Slide groove two. Detailed Implementation

[0020] The technical solutions of 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.

[0021] like Figure 1-10As shown, the present invention provides a technical solution: a bending die for motorcycle production. The device is installed on the floor of the production workshop and is mainly used for the precise bending and forming of steel pipe 6 in the production of motorcycle frames. The core advantage of this device is that it realizes the automated centering and straightening of steel pipe 6 through the linkage control of the straightening component 3, which can adapt to steel pipes 6 of different diameters. At the same time, with the help of the auxiliary component 5, it effectively solves the problem of easy deformation of the cross section of steel pipe 6 during the bending process. The bending die mainly includes a base 1, a feeding component 2, a straightening component 3, a bending component 4, and an auxiliary component 5.

[0022] The base 1, as the main support of the entire device, is fixedly set on the ground. Its top is provided with slide groove 9 and slide groove 10 for installing and supporting other functional components, ensuring the stability of the equipment when it is running at high speed.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the feeding assembly 2 is located at the top rear end of the base 1, used to realize the axial feeding and rotation of the steel pipe 6, thereby cooperating with the front-end bending assembly 4 to achieve multi-angle bending. Specifically, a pair of slide rails 201 are fixedly fixed parallel to the top of the base 1. A slide plate 202 is slidably connected to the slide rails 201. A support block 7 is fixedly connected to the side of the slide plate 202. A slide bar 206 is fixedly connected to the middle of the bottom of the slide plate 202. The slide bar 206 extends into the slide groove 9 in the middle of the base 1 and slides in cooperation with the slide groove 9. A drive rod 207 is rotatably installed inside the slide groove 9. The drive rod 207 has a threaded groove and is threadedly connected to the slide bar 206. A support block 208 at the tail end of the base 1 is fixedly installed. There is a servo motor 209, the output end of which is connected to the drive rod 207. When the servo motor 209 is started, the drive rod 207 rotates and drives the slide plate 202 to move smoothly along the slide rail 201, thereby controlling the feed amount of the steel pipe 6. In addition, a pair of slide rails 203 are vertically fixed on the top of the slide plate 202. The feeder 204 is slidably connected to the slide plate 202 through the slide rails 203. The end of the feeder 204 is provided with a pipe clamp 8, and the side is connected to the telescopic rod of the hydraulic cylinder 205 fixed on the top of the support block 7. The action of the hydraulic cylinder 205 can drive the feeder 204 to move laterally along the slide rails 203, thereby controlling the rotation or lateral position adjustment of the steel pipe 6.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the straightening component 3 is located in front of the feeding component 2 and is used to correct the posture of the steel pipe 6 before it enters the bending area, eliminating the initial bending deformation of the steel pipe 6. This component includes a horizontal straightening component, a vertical straightening component, and a linkage control component. The horizontal straightening component includes a slide rail 301 located inside the slide groove 10, a support column 302 slidably connected to the slide rail 301, and a horizontal straightening wheel 303 rotatably connected to the top of the support column 302. The vertical straightening component includes a guide column fixed to the top of the base 1. 304. A movable frame 305 is slidably connected to the guide column 304, and a vertical straightening wheel 306 is rotatably connected to the movable frame 305. The annular groove surface of the straightening wheel is in contact with the surface of the steel pipe 6. In order to achieve automatic adjustment, an adjusting rod 307 is rotatably connected to the inner side of the guide column 304 and drives the movable frame 305 to rise and fall through the thread. A conical wheel 308 is fixed at the bottom of the adjusting rod 307. At the same time, a worm gear 311 is rotatably provided inside the slide groove 10. The worm gear 311 passes through the support column 302 and drives the... Its horizontal movement and linkage control components include a rotating rod 312 rotatably disposed inside the base 1, a worm wheel 313 fixed on the rotating rod 312 to mesh with a worm gear 311, and a worm wheel 314 fixed on the rotating rod 312 for driving the vertical straightening component. A servo motor 315 is also fixed inside the base 1. The servo motor 315 drives the rotating rod 312 to rotate. When the servo motor 315 is started, it drives the worm gear 311 to rotate through the worm wheel 313, thereby driving the support column 302 and the horizontal... The straightening wheels 303 move towards each other; at the same time, the rotating rod 312 drives the worm gear 309 to rotate through the worm wheel 314. The conical wheels 310 fixed at both ends of the worm gear 309 mesh with the conical wheel 308 at the bottom of the adjusting rod 307, thereby driving the adjusting rod 307 to rotate, causing the moving frame 305 and the vertical straightening wheel 306 to move closer to each other in sync. This linkage design can automatically adjust the distance between the two pairs of straightening wheels, so that they can clamp steel pipes 6 of different specifications, and achieve self-locking through threaded engagement, ensuring the stability of the straightening process.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8As shown, the pipe bending assembly 4 is located at the front end of the base 1 and is the core component for bending the steel pipe 6. It includes a support frame 401 fixed on the base 1, a rotating frame 402 rotatably connected to the support frame 401, a rotating shaft 403 fixedly passing through the rotating frame 402 and connected to the servo motor 406 at the bottom, a bending wheel 404 fixed to the top of the rotating shaft 403, and a hydraulic cylinder 405 hinged to the top of the rotating frame 402. A bending block is connected to the end of the telescopic rod of the hydraulic cylinder 405. During operation, the hydraulic cylinder 405 extends to press the steel pipe 6 between the bending wheel 404 and the bending block. Then, the servo motor 406 drives the rotating shaft 403 and the rotating frame 402 to rotate as a whole, forcing the steel pipe 6 to bend around the bending wheel 404. The required bending angle can be accurately obtained by controlling the rotation angle.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the auxiliary component 5 is located at the front end of the base 1 and on one side of the bending component 4. It is used to support the unbent part of the steel pipe 6 during the bending process to prevent warping or cross-sectional deformation. The component includes a fixed frame 501, on which a slide rail 502 is provided. A moving block 503 is slidably connected to the fixed frame 501 and driven to rise and fall by a hydraulic cylinder 504. A moving strip 505 is slidably connected to the front end of the moving block 503. The concave surface of the clamping block 507 at the end of the moving strip 505 is in contact with the surface of the steel pipe 6. The hydraulic cylinder 506 controls the axial movement of the moving strip 505. During the bending process, the hydraulic cylinder 504 drives the clamping block 507 to press down and clamp the steel pipe 6. The hydraulic cylinder 506 then finely adjusts the axial position of the steel pipe 6 according to the bending progress, thereby effectively offsetting the bending torque and ensuring the integrity of the steel pipe 6.

[0027] Working process: First, according to the diameter of the steel pipe 6 to be processed, servo motor 2 315 is started, and the distance between the horizontal straightening wheel 303 and the vertical straightening wheel 306 is automatically adjusted through the linkage control component, so that the steel pipe 6 is inserted and clamped on the pipe clamp 8 of the feeding component 2; then, servo motor 1 209 is activated to transport the steel pipe 6 to the position of the bending component 4, and hydraulic cylinder 2 405 drives the bending block to press the steel pipe 6, while the clamping block 507 of the auxiliary component 5 presses down to clamp the tail of the steel pipe 6; next, servo motor 3 406 drives the rotating frame 402 to rotate for bending. During the bending process, the feeding component 2 cooperates in feeding, and the auxiliary component 5 cooperates in fine adjustment; finally, after bending and forming, all components are reset, and the steel pipe 6 can be removed.

[0028] In this embodiment, the surfaces of both the horizontal straightening wheel 303 and the vertical straightening wheel 306 are covered with a rubber layer to increase the friction with the surface of the steel pipe 6, prevent slippage, and avoid hard contact that could scratch the surface of the steel pipe 6. Both the first worm gear 311 and the second worm gear 309 are self-locking worm gears to ensure that the position of the straightening wheel remains fixed after the second servo motor 315 stops rotating, preventing displacement due to the reaction force of the steel pipe 6. The first hydraulic cylinder 205, the second hydraulic cylinder 405, the third hydraulic cylinder 504, and the fourth hydraulic cylinder 506 are all equipped with a hydraulic control system, which can achieve precise pressure and flow regulation, thereby controlling the movement speed and clamping force of each component. The first servo motor 209, the second servo motor 315, and the third servo motor 406 are all connected to the PLC control system, and the operator can set parameters through the control panel to achieve automated production.

[0029] 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 die for motorcycle manufacturing, characterized in that, include: The base (1) is fixedly set on the ground and serves as the main support for each functional module; The feed assembly (2) is located on the top of the base (1) and is used to precisely control the axial feed amount of the steel pipe (6) and the circumferential rotation angle of the steel pipe (6); The correction component (3) is set on the base (1) and located in front of the feeding component (2) for multi-dimensional posture correction of the steel pipe (6) during the conveying process, so as to keep the steel pipe (6) moving forward in a straight axial direction and eliminate initial deformation; The pipe bending assembly (4) is set at the front end of the base (1) and is used to cooperate with the straightened steel pipe (6) to perform a fixed angle bending operation; An auxiliary component (5) is disposed at the front end of the base (1) and located on one side of the bending assembly (4) to apply clamping constraints to the non-bending section of the steel pipe (6) during the bending process to ensure the overall integrity and stability of the steel pipe (6).

2. The bending die for motorcycle production according to claim 1, characterized in that, The feed assembly (2) includes: A pair of slide rails (201) are parallel to and fixedly disposed on the top of the base (1) along the length direction of the base (1); The first slide plate (202) is slidably connected to the first slide rail (201) by a slider, and a support block (7) is fixedly provided on its side. A pair of slide rails (203) are fixedly installed on the top of the slide plate (202), and the length direction of the slide rails (203) is perpendicular to the length direction of the slide rails (201); The feeder (204) is slidably connected to the top of the slide rail (203) via a slider at the bottom. The front end of the feeder (204) is provided with a pipe clamp (8) for clamping the steel pipe (6). Hydraulic cylinder one (205) has its cylinder body fixedly connected to the top of the support block (7), and its telescopic rod end is fixedly connected to the side wall of the feeder (204), which is used to drive the feeder (204) to make lateral displacement along the slide rail two (203).

3. A bending die for motorcycle production according to claim 1, characterized in that, The upper surface of the base (1) is provided with a sliding groove (9), which is located at the center between the two sliding rails (201); The feed assembly (2) further includes: A slider (206) is fixedly connected to the bottom center of the slide plate (202), and the slider (206) extends into the slide groove (9) and slides in cooperation with the slide groove (9); The drive rod (207) is axially rotatably disposed inside the slide groove (9). A threaded groove is provided on the outer cylindrical surface of the drive rod (207). The drive rod (207) passes through the slide bar (206) and is threadedly engaged with the slide bar (206) through the threaded groove. The support block (208) is fixedly connected to the tail end face of the base (1); Servo motor 1 (209) is fixedly installed on the top of the support block (208), and its output shaft is connected to the end of the drive rod (207) via a coupling. It is used to drive the drive rod (207) to rotate and thus control the steel pipe (6) to be fed precisely along the axial direction.

4. A bending die for motorcycle production according to claim 1, characterized in that, The corrective component (3) includes: A pair of horizontal straightening elements are symmetrically arranged on both sides of the conveying path of the steel pipe (6) to apply clamping force to the steel pipe (6) from the horizontal direction for straightening; A pair of vertical straightening elements are set on the upper and lower sides of the conveying path of the steel pipe (6) to apply clamping force to the steel pipe (6) from the vertical direction for straightening; The linkage control component is built into the base (1), and its output end is connected to the horizontal correction component and the vertical correction component respectively, for driving the horizontal correction component and the vertical correction component to move synchronously towards or away from each other.

5. A bending die for motorcycle production according to claim 1, characterized in that, A pair of sliding grooves (10) are provided on the base (1), and the length direction of the sliding grooves (10) is perpendicular to the length direction of the sliding grooves (9); The horizontal corrective component includes: A pair of slide rails (301) are respectively fixedly embedded in the inner bottom surface of the slide groove (10); Support column (302), a pair of support columns (302) are slidably connected to the top of each set of slide rail three (301), the bottom end of the support column (302) extends into the slide groove two (10) and slides in cooperation with the slide groove two (10); A horizontal straightening wheel (303) is rotatably connected to the top of the support column (302). The annular groove surfaces of the two opposing horizontal straightening wheels (303) together form a horizontal limiting space that fits against the surface of the steel pipe (6).

6. A bending die for motorcycle production according to claim 1, characterized in that, The vertical straightening component includes: A pair of guide posts (304) are vertically fixed to the top of the base (1); A movable frame (305) is slidably connected to each of the guide columns (304). Vertical straightening wheel (306) is rotatably connected to each of the moving frames (305) via a rotating shaft. A space is formed between two oppositely arranged vertical straightening wheels (306) for the steel pipe (6) to pass through, and the annular groove surface of the vertical straightening wheel (306) is in contact with the surface of the steel pipe (6).

7. A bending die for motorcycle production according to claim 1, characterized in that, The vertical straightening component also includes: An adjusting rod (307) is rotatably connected to the inner side of the guide post (304). The bottom end of the adjusting rod (307) extends into the interior of the base (1). The adjusting rod (307) is provided with a threaded groove three with symmetrical rotation direction. The adjusting rod (307) passes through the ends of the two movable frames (305) and is threadedly engaged with the movable frames (305) through the threaded groove three to drive the two movable frames (305) to move closer or further apart from each other. Conical wheel 1 (308) is coaxially fixedly connected to the bottom of each of the adjusting rods (307); The second worm gear (309) is axially rotatably disposed inside the base (1); Conical wheel two (310) is coaxially fixedly connected to both ends of worm gear two (309), and conical wheel two (310) meshes with conical wheel one (308) for transmission; The rotation of the worm gear 2 (309) drives the cone wheel 2 (310) to move in conjunction with the cone wheel 1 (308), thereby controlling the two adjusting rods (307) to rotate synchronously.

8. A bending die for motorcycle production according to claim 1, characterized in that, The horizontal correction component also includes: The worm gear (311) is axially rotatably disposed inside the slide groove (10). The two ends of the worm gear (311) are provided with threaded grooves (2) with symmetrical helical direction. The two ends of the worm gear (311) pass through the support column (302) and are threadedly engaged with the support column (302) through the threaded grooves (2) to drive the support column (302) to move closer or further away from each other. The linkage control component includes: The rotating rod (312) is axially rotatable inside the base (1); A pair of worm gears (313) are coaxially fixedly connected to the rotating rod (312) and respectively mesh with the corresponding worm gears (311); A pair of worm gears (314) are coaxially fixedly connected to the rotating rod (312) and respectively mesh with the corresponding worm gears (309); Servo motor 2 (315) is fixedly installed inside the base (1), and its output end is connected to the end of the rotary rod (312) for providing synchronous driving force.

9. A bending die for motorcycle production according to claim 1, characterized in that, The pipe bending assembly (4) includes: The support frame (401) is fixedly connected to the front end of the base (1); A rotating frame (402) is rotatably connected to the upper part of the support frame (401); A rotating shaft (403) is fixedly inserted through the center of the rotating frame (402), and the bottom end of the rotating shaft (403) is movably inserted through the support frame (401) to guide the rotating frame (402) to rotate around the center of the rotating shaft (403); A bending wheel (404) is fixedly connected to the top of the rotating shaft (403) and is used as a shaping mold for bending the steel pipe (6); Hydraulic cylinder 2 (405) has its cylinder body hinged to the top of the rotating frame (402), and a bending block is fixedly connected to the end of its telescopic rod. The steel pipe (6) is clamped and limited between the bending wheel (404) and the bending block so as to bend the steel pipe (6) into shape during the rotation of the rotating frame (402). Servo motor three (406) is fixedly installed at the bottom of the support frame (401), and its output end is connected to the bottom end of the rotating shaft (403) for transmission.

10. A bending die for motorcycle production according to claim 1, characterized in that, The auxiliary component (5) includes: The fixing bracket (501) is fixedly connected to the front side of the base (1); A pair of slide rails (502) are fixedly connected in parallel to the top of the fixing frame (501); The movable block (503) is slidably connected to the top of the slide rail four (502) via a slider; Hydraulic cylinder three (504) has its cylinder body fixedly connected to the top of the fixed frame (501) and located between the two slide rails four (502), and its telescopic rod end is fixedly connected to the back side of the moving block (503). A movable strip (505) is slidably connected to the front end face of the movable block (503). A clamping block (507) is fixedly connected to the end of the movable strip (505). The clamping block (507) has a concave surface that matches the curvature of the steel pipe (6) so that it fits the surface of the steel pipe (6) when the steel pipe (6) is bent and keeps the remaining section from deforming. Hydraulic cylinder four (506) has its cylinder body fixedly connected to the side of the moving block (503), and the end of its telescopic rod is fixedly connected to the moving bar (505); Hydraulic cylinder three (504) is used to control the radial movement of the clamping block (507) toward or away from the steel pipe (6), and hydraulic cylinder four (506) is used to control the clamping block (507) to make fine adjustments along the axial direction of the steel pipe (6).

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