Horizontal stretch bending machine with plug-in core

Abstract

The application relates to a horizontal stretch-bending machine with a plug-in core, which comprises a stretch-bending machine table, a swing arm structure and a vertical arm frame, the rear side of the stretch-bending machine table is provided with a rear table, the upper end surface of the stretch-bending machine table is provided with a die placing table, both sides of the stretch-bending machine table are provided with a swing arm structure, the rear side middle part of the swing arm structure is provided with an inner notch, a vertical butt joint shaft is arranged in the inner notch, a pushing oil cylinder is arranged between the rear end of the upper end surface of the rear table and the butt joint shaft, the swing arm structure is slidably provided with a vertical arm frame, the vertical arm frame is internally provided with a shooting arm mounting frame, and the shooting arm mounting frame is slidably provided with a shooting arm structure. The application has the characteristics of fast shooting action speed, low energy consumption, greatly improved production efficiency of the equipment, simplified overall structure of the equipment and improved running smoothness of the stretch-bending machine.

Description

Technical Field

[0001] This invention relates to the field of tension bending machine technology, and in particular to a horizontal tension bending machine with a core inserter. Background Technology

[0002] Conventional stretch bending machines typically use motors and electric cylinders as actuators. This type of stretch bending machine is mainly used for bending small decorative strips. If this equipment is used for bending large parts, the wear and tear on the equipment will increase significantly, affecting its service life. To solve this problem, the actuators inside the stretch bending machine need to be replaced, replacing the motor and electric cylinder with rotary hydraulic cylinders. To facilitate system operation, multiple control valve groups need to be installed inside the equipment, such as inside the machine base or on the boom. This will greatly increase the weight and overall size of the equipment, and significantly increase its energy consumption. To solve these problems, the hydraulic circuit structure of the stretch bending machine needs to be integrated. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a horizontal bending machine with a core insert, which has the characteristics of fast injection speed, low energy consumption, greatly improved production efficiency, simplified overall structure, and improved smooth operation of the bending machine.

[0004] The technical solution adopted by the present invention to solve its technical problem is as follows: a horizontal bending machine with a core is provided, including a bending machine base, a swing arm structure and a vertical arm frame. A rear machine base is installed on the rear side of the bending machine base. A mold placement platform is installed on the upper surface of the bending machine base. A swing arm structure is installed on both sides of the bending machine base. The swing arm structure has an inner recess in the middle of its rear side. A vertical docking shaft is installed in the inner recess. A push cylinder is installed between the rear end of the upper surface of the rear machine base and the docking shaft. A vertical arm frame is slidably installed on the swing arm structure. An injection arm mounting frame is installed inside the vertical arm frame. An injection arm structure is slidably installed in the injection arm mounting frame. A rotating chuck assembly is installed on the end of the injection arm structure near the mold placement platform. A core is installed on the clamping port of the rotating chuck assembly.

[0005] The rear machine base has first cable chains installed on both sides of the front end, which are connected to the cable distribution base. The front end of the first cable chain extends along both sides of the bending machine base and protrudes from both sides of the front end of the bending machine base. The first cable chain is provided with a first cable. The first cable extends out of the first cable chain and is fixed to the lower side of the outer convex shell near the bending machine base by a cable bracket. At the same time, a cable connector is installed at the front end of the vertical arm base plate. A second cable chain is installed between the lower front side of the swing arm structure and the cable connector. The second cable chain bypasses the outer convex shell.

[0006] As a supplement to this technical solution, an upper cable distribution seat is installed on the vertical arm frame, and a side cable is installed between the cable connector and the upper cable distribution seat. An injection arm cable distribution seat that mates with the injection arm mounting frame is installed above the injection arm structure. The injection arm structure is divided into two layers. A cable guide wheel is rotatably installed on one end of the injection arm structure and the rotating chuck assembly, which are opposite to each other. Several parallel horizontal cables are arranged on one side of the injection arm cable distribution seat. The horizontal cables pass around the cable guide wheel and extend into the upper and lower layers of the injection arm structure. Upper layer cables are arranged in the upper layer of the injection arm structure, and lower layer cables are arranged in the lower layer of the injection arm structure. A chuck cable distribution seat is installed between the rotating chuck assembly and the injection arm structure. A cylinder connecting cable is installed between the upper side of the chuck cable distribution seat and the clamping cylinder of the rotating chuck assembly.

[0007] As a supplement to this technical solution, the bending machine base includes a rear support plate, a lower base plate, and a vertical bracket. Two vertical brackets are installed side by side in the middle of the upper surface of the lower base plate. A rear support plate is vertically installed on the rear side of the vertical brackets. The mold placement platform is installed on the upper end of the vertical brackets. Swing arm mounting shafts extending vertically toward the middle of the bending machine base are installed on both the left and right ends of the lower base plate and both ends of the mold placement platform.

[0008] As a supplement to this technical solution, a lubricating oil guide sleeve is fitted onto one end of the swing arm mounting shaft, and a lubricating oil guide plate is fitted onto the outer ring of the lubricating oil guide sleeve. Several radially arranged strip-shaped grooves are uniformly arranged on the upper and lower end faces of the lubricating oil guide plate. One end of the strip-shaped groove is connected to the inner ring of the lubricating oil guide plate. An annular guide groove is provided in the middle of the upper and lower end faces of the lubricating oil guide plate or near the outer ring. A connecting through hole is provided at the node of the strip-shaped groove and the annular guide groove.

[0009] As a supplement to this technical solution, the swing arm structure includes a swing arm body, a swing arm docking seat, and a vertical arm slide rail panel. The rear center of the swing arm body has an indentation, and the front side of the swing arm body has an outwardly protruding shell corresponding to the indentation. The docking shaft is vertically installed inside the outwardly protruding shell. One end of the swing arm body has a swing arm docking seat, and the upper part of the other end houses a drive motor with its main shaft facing upwards. A transverse lead screw with one end connected to the drive motor's main shaft is installed in the upper part of the swing arm body. The swing arm body is equipped with... The boom slide rail panel extends from the front and rear sides of the boom body, and the extended parts of the boom slide rail panel serve as sliding tracks. A boom base plate is installed inside the lower part of the boom frame. The boom base plate covers the front and rear sides of the boom slide rail panel, so that the boom base plate and the boom slide rail panel can slide relative to each other. An internal thread drive block is installed on the lower end surface of the boom base plate. The internal thread drive block is sleeved on the transverse lead screw, and the transverse lead screw and the internal thread drive block are threadedly matched. When the transverse lead screw rotates, it can drive the internal thread drive block to move along the transverse lead screw direction.

[0010] As a supplement to this technical solution, the injection arm mounting frame includes a mounting frame side plate, a mounting frame top plate, and a mounting frame bottom plate. Two vertical mounting frame side plates are symmetrically mounted on the front and rear ends of the upper end of the mounting frame bottom plate. The mounting frame top plate is installed between the upper ends of the mounting frame side plates. An upper pivot shaft that passes through the vertical arm frame is installed in the middle of the upper end face of the mounting frame top plate. A lower pivot shaft that inserts into the vertical arm bottom plate is installed in the middle of the lower end face of the mounting frame bottom plate. Two slide rail structures arranged vertically side by side are installed on the front and rear sides of the injection arm structure. Several limiting slider seats that cover the slide rail structures are installed on the side of the mounting frame side plate near the injection arm structure.

[0011] As a supplement to this technical solution, a wire guide wheel is installed on one end of the injection arm structure. The wire guide wheel has extension shafts extending forward and backward at both ends. The extension shafts have wire guide wheel guide posts facing the injection direction of the injection arm structure. At least four guide seats are installed on the front and rear sides of the injection arm structure, corresponding to the wire guide wheel guide posts. The wire guide wheel guide posts pass laterally through the guide seats. A downwardly extending docking pin is installed on the lower side of the extension shaft. A gas spring is installed between the lower end of the docking pin and the injection arm structure. The gas spring is parallel to the wire guide wheel guide posts.

[0012] As a supplement to this technical solution, the injection arm structure includes an injection arm body and a lower injection cylinder. A rotating chuck assembly is installed on one end of the injection arm body, and the other end extends upward, with an upper cylinder docking seat installed inside the extension. An upper injection cylinder with a main shaft and an upper cylinder docking seat is installed in the upper part of the injection arm mounting frame. The injection arm body has a hollow interior forming an inner cavity structure. A lower injection cylinder with its main shaft facing the rotating chuck assembly is installed in the inner cavity structure. A plug-in core base mounting block is installed on the main shaft of the lower injection cylinder. A plug-in core base is rotatably mounted on the side of the plug-in core base mounting block near the lower injection cylinder.

[0013] As a supplement to this technical solution, the rotary chuck assembly includes a docking base, a turntable mounting housing, a docking shaft, and a clamping base. One side of the docking base is docked with the injection arm structure, and the other side is fitted with the turntable mounting housing. One side of the turntable mounting housing has an opening, and a turntable structure is rotatably mounted inside the turntable mounting housing. A docking shaft that docks with the turntable structure is installed at the opening of the turntable mounting housing, and the extended end of the docking shaft is connected to the clamping base.

[0014] As a supplement to this technical solution, the plug-in core includes a T-shaped docking handle, a plug-in base, and a rod-shaped structure. The plug-in base is installed on one end of the T-shaped docking handle. Several rod-shaped structures are installed on the plug-in base in a stacked arrangement. Several detachable insertion modules that extend the length of the rod-shaped structure are installed on the rod-shaped structure. An insertion head is installed on the detachable insertion module at the very end.

[0015] Beneficial Effects: This invention relates to a horizontal stretch bending machine with a plug-in core. By eliminating the need to directly install the control circuit in the motor cabinet and the valve group structure controlling the hydraulic system on the stretch bending machine, the weight of the entire machine is greatly reduced. Simultaneously, through a reasonable cable layout, the external hydraulic station can drive the various actuators within the stretch bending machine. A simple and clear cable layout is formed between the actuators, facilitating worker maintenance and preventing interference between cables and structural components during operation, thus avoiding cable tangling and equipment damage. It features fast injection speed, low energy consumption, significantly improved production efficiency, simplified overall structure, smoother operation, and extended service life. Attached Figure Description

[0016] Figure 1 This is a top view of the present invention;

[0017] Figure 2 This is a structural view of the present invention;

[0018] Figure 3This is a structural view of the rear part of the invention;

[0019] Figure 4 This is a front view of the bending machine platform described in this invention;

[0020] Figure 5 This is a top view of the bending machine platform described in this invention;

[0021] Figure 6 This is the present invention. Figure 5 A sectional view along the A-A direction;

[0022] Figure 7 This is the present invention. Figure 6 Enlarged view of a portion of point A in the middle;

[0023] Figure 8 This is a structural view of the bending machine platform and the swing arm structure of the present invention when they are connected;

[0024] Figure 9 This is a top view of the bending machine platform and the swing arm structure of the present invention when they are connected;

[0025] Figure 10 This is the present invention. Figure 9 A cross-sectional view along the B-B direction;

[0026] Figure 11 This is a structural view of the combination of the lubricating oil guide sleeve and the lubricating oil guide plate described in this invention;

[0027] Figure 12 This is a front view of the lubricating oil guide sleeve and lubricating oil guide plate assembly as described in this invention;

[0028] Figure 13 This is the present invention. Figure 12 A cross-sectional view along the C-C direction;

[0029] Figure 14 This is a front view of the swing arm structure described in this invention;

[0030] Figure 15 This is the present invention. Figure 14 A cross-sectional view along the D-D direction;

[0031] Figure 16 This is a view of the cable arrangement at the rear machine tool as described in this invention;

[0032] Figure 17 This is a view of the cable arrangement at the swing arm structure described in this invention;

[0033] Figure 18 This is a view of the cable arrangement at the support frame described in this invention;

[0034] Figure 19This is a structural view of the boom frame described in this invention;

[0035] Figure 20 This is a structural view of the injection arm mounting frame described in this invention;

[0036] Figure 21 This is a front view of the injection arm mounting frame described in this invention;

[0037] Figure 22 This is the present invention. Figure 21 A cross-sectional view along the E-E direction;

[0038] Figure 23 This is a top view of the vertical arm frame described in this invention;

[0039] Figure 24 This is the present invention. Figure 23 A cross-sectional view along the F-F direction;

[0040] Figure 25 This is a structural view of the lower injection cylinder as described in this invention;

[0041] Figure 26 This is a structural view of the rotary chuck assembly described in this invention;

[0042] Figure 27 This is a top view of the rotary chuck assembly described in this invention;

[0043] Figure 28 This is the present invention. Figure 27 A cross-sectional view along the G-G direction;

[0044] Figure 29 This is a front view of the rotary chuck assembly described in this invention;

[0045] Figure 30 This is the present invention. Figure 29 A cross-sectional view along the H-H direction;

[0046] Figure 31 This is the present invention. Figure 29 A sectional view along the I-I direction;

[0047] Figure 32 This is a structural view of the insertion / removal core described in this invention.

[0048] Illustrations: 1. Bending machine base; 2. Swing arm structure; 3. Vertical arm frame; 4. Injection arm mounting frame; 5. Injection arm structure; 6. Rotary chuck assembly; 7. Insert / extract core; 8. Rear machine base; 9. First electrical control cabinet; 10. Push cylinder; 11. Mold placement platform; 12. Step platform; 13. Control panel; 14. Main switch; 15. Overall cable mounting base; 16. Cable distributor; 17. First cable carrier; 18. First cable; 19. Second cable carrier; 20. Cable connector; 22. Side cable; 23. Upper cable distributor; 24. Upper cable; 25. Injection arm cable distributor; 26. Horizontal cable; 27. Upper cable; 28. Lower cable; 29. ​​Chuck cable distributor; 30. Cylinder connecting cable; 31. Cable guide wheel.

[0049] 101. Rear support plate; 102. Lower base plate; 103. Vertical bracket; 104. Loose opening; 105. Swing arm mounting shaft; 106. Lubricating oil guide sleeve; 107. Lubricating oil guide plate; 108. Washer structure; 109. Oil injection pipe; 110. Lower limit sleeve.

[0050] 201. Inner notch; 202. Connecting shaft; 203. Swing arm connecting seat; 204. Outer convex housing; 205. Drive motor; 206. Internal thread drive block; 207. Transverse lead screw; 208. Vertical arm slide rail panel; 209. Swing arm body; 210. Partition structure.

[0051] 301. Boom base plate; 302. Boom side support; 303. Boom top plate; 304. Boom electrical control box; 305. Swing arm push cylinder.

[0052] 401. Install frame side plate; 402. Install frame top plate; 403. Install frame bottom plate; 404. Limiting slider seat; 405. Lower rotating shaft; 406. Upper rotating shaft; 407. Swing arm; 408. Upper injection cylinder.

[0053] 501. Injection arm body; 502. Slide rail structure; 503. Dust cover; 504. Upper cylinder docking seat; 505. Inner cavity structure; 506. Lower injection cylinder; 507. Insertion core base; 508. Insertion core base mounting block; 509. Guide post mounting seat; 510. Guide sleeve structure; 511. Guide post structure; 512. T-type mating interface; 513. Insertion core fixing block.

[0054] 601. Docking base; 602. Turntable mounting housing; 603. Docking shaft; 604. Clamping base; 605. Rotating cylinder; 606. Clamping assembly operating table; 607. Upper clamping cylinder; 608. Front clamping cylinder; 609. Clamping port; 610. Lubricating oil tank; 611. Notch structure; 612. Locking bolt; 613. Disc structure; 614. Shaft structure; 615. Shaft lubricating oil docking nozzle; 616. Worm gear structure; 617. Disc washer structure; 618. Turntable structure.

[0055] 701. T-shaped docking handle; 702. Plug-in base; 703. Rod-shaped structure; 704. Detachable insertion module; 705. Insertion head;

[0056] 1001, butt joint; 1002, socket hole; 1003, butt shaft positioning sleeve; 1004, lubricating oil storage cavity;

[0057] 1101. Mounting hole panel; 1102. Limiting sleeve;

[0058] 1061. Oil outlet; 1062. Vertical oil guide groove; 1063. Annular diffusion groove;

[0059] 1071, strip groove; 1072, annular guide groove; 1073, connecting through hole;

[0060] 2021, Oil injection channel for the docking shaft;

[0061] 3101, guide seat; 3102, extension shaft; 3103, cable guide post; 3104, gas spring; 3105, docking pin; 3106, positioning roller; 3107, cable rolling sleeve; 3108, annular cable positioning groove. Detailed Implementation

[0062] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0063] Embodiments of the present invention relate to a horizontal stretch bending machine with a plug-in core, such as... Figure 1 — Figure 3As shown, the machine includes a bending machine base 1, a swing arm structure 2, a rear machine base 8, and a first electrical control cabinet 9. The swing arm structure 2 is rotatably installed on the left and right sides of the bending machine base 1. The rear machine base 8, which extends backward, is installed on the rear side of the bending machine base 1. The first electrical control cabinet 9 is installed above the rear end of the rear machine base 8. The middle of the rear side of the swing arm structure 2 is provided with an indentation 201 that extends to the side of the bending machine base 1. A docking shaft 202 is vertically installed at one end of the indentation 201 near the bending machine base 1.

[0064] An inclined push cylinder 10 is installed on both sides of the rear end of the rear machine base 8 and between the docking shaft 202. The cylinder body of the push cylinder 10 is connected to the rear machine base 8 through a rotating shaft. An annular docking sleeve is installed on the main shaft of the push cylinder 10. The annular docking sleeve is sleeved in the middle of the docking shaft 202. The docking shaft 202 and the annular docking sleeve rotate relative to each other. When the main shaft of the push cylinder 10 performs a telescopic action, it can push the swing arm structure 2 to swing.

[0065] The bending machine base 1 is equipped with a mold placement platform 11, which is mainly used to place bending molds. At the same time, a stepped platform 12 with a guardrail structure is installed on the front side of the bending machine base 1. A control panel 13 is installed on the left side of the stepped platform 12, and a main switch 14 is installed on the right side. The stepped platform 12 allows workers to easily approach the operating position for convenient operation. The guardrail structure can protect workers and prevent accidental injury during equipment operation. The control panel 13 ensures that workers can operate accurately, and the main switch 14 can start and stop the entire machine.

[0066] The swing arm structure 2 is equipped with a vertical arm frame 3 that can slide along the upper surface of the swing arm structure 2. An injection arm mounting frame 4 is installed inside the vertical arm frame 3. The upper and lower ends of the injection arm mounting frame 4 are connected to the vertical arm frame 3 through vertical rotating shafts. An injection arm structure 5 that can move horizontally along the injection arm mounting frame 4 is installed inside the injection arm mounting frame 4. A rotating chuck assembly 6 is installed on the end of the injection arm structure 5 near the mold placement table 11. A plug-in core 7 is installed on the clamping port of the rotating chuck assembly 6.

[0067] like Figure 4As shown, the bending machine base 1 includes a rear support plate 101, a lower base plate 102, and a vertical bracket 103. Two vertical brackets 103 are installed side by side on the upper end of the lower base plate 102. The rear support plate 101 is vertically installed on the rear side of the vertical brackets 103. The mold placement platform 11 is installed on the upper end of the vertical brackets 103. The left and right ends of the lower base plate 102 and the two ends of the mold placement platform 11 are all equipped with swing arm mounting shafts 105 that extend vertically toward the middle of the bending machine base 1. The swing arm structure 2 is equipped with a horizontally oriented "H"-shaped swing arm docking seat 203, which is sleeved on the middle of the swing arm mounting shaft 105.

[0068] like Figure 5 As shown, in order to ensure the stability of the installation of the swing arm docking seat 203, the swing arm docking seat 203 is equipped with a mounting shaft connecting seat that matches the lower end of the swing arm mounting shaft 105 located on the mold placement table 11. The mounting shaft connecting seat is used to facilitate the disassembly and assembly of the swing arm mounting shaft 105, and also to limit the position of the swing arm mounting shaft 105.

[0069] like Figure 5 As shown, in order to ensure smooth movement between the swing arm docking seat 203 and the swing arm mounting shaft 105, a lubricating oil guide sleeve 106 is fitted on the end of the swing arm docking seat 203 that docks with the mold placement table 11 or the end that docks with the lower base plate 102. A lubricating oil guide plate 107 is fitted on the outer ring of the lubricating oil guide sleeve 106. The lubricating oil guide plate 107 is tightly fitted to the end face of the swing arm docking seat 203.

[0070] Meanwhile, in order to continuously replenish the lubricating oil, an oil injection channel is provided inside the swing arm mounting shaft 105. At the same time, an oil injection nozzle that connects to the oil injection channel is installed on one end of the swing arm mounting shaft 105 near the middle of the bending machine platform 1. A drainage notch 104 is provided on the rear support plate 101. The drainage notch 104 is used to introduce the oil injection pipe 109, which is connected to the oil injection nozzle.

[0071] like Figure 6 As shown, in order to ensure the stability of the installation of the lubricating oil guide plate 107 located on the upper part of the swing arm docking seat 203, a limiting sleeve 1102 that fits the lubricating oil guide sleeve 106 is fixedly installed on the lower end surface of the mold placement table 11, and a washer structure 108 that abuts against the lubricating oil guide plate 107 is installed on the lower side of the limiting sleeve 1102.

[0072] like Figure 7 As shown, in order to ensure the stability of the installation of the lubricating oil guide plate 107 located at the lower part of the swing arm docking seat 203, a lower limiting sleeve 110 with its upper end abutting against the lubricating oil guide plate 107 is installed on the lubricating oil guide sleeve 106 on the lower base plate 102.

[0073] like Figure 5 As shown, in order to facilitate the assembly of the equipment, the mold placement platform 11 is provided with mounting holes corresponding to the swing arm mounting shaft 105. In order to cover the mounting holes, a mounting hole panel 1101 is embedded in the mounting holes.

[0074] like Figure 11 — Figure 13 As shown, in order to ensure smoother operation between the swing arm docking seat 203 and the swing arm mounting shaft 105, the lubrication structure is further improved. First, the lubricating oil guide plate 107 is improved. Six radially arranged strip grooves 1071 are evenly arranged on the upper and lower end surfaces of the lubricating oil guide plate 107. One end of the strip groove 1071 is connected to the inner ring of the lubricating oil guide plate 107. An annular guide groove 1072 is provided in the middle of the upper and lower end surfaces of the lubricating oil guide plate 107 or near the outer ring. A connecting through hole 1073 is provided at the node of the strip groove 1071 and the annular guide groove 1072.

[0075] In addition to modifying the lubricating oil guide plate 107, the lubricating oil guide sleeve 106 also needs to be improved. The inner side wall of the lubricating oil guide sleeve 106 is provided with several vertical oil guide grooves 1062 corresponding to the strip grooves 1071. One end of the vertical oil guide grooves 1062 extends to the end of the swing arm mounting shaft 105, so that the lubricating oil can enter the end position of the swing arm mounting shaft 105. The other end of the vertical oil guide grooves 1062 extends to the upper side of the lubricating oil guide plate 107. The lubricating oil guide sleeve 106 is provided with an oil outlet 1061 connecting the vertical oil guide grooves 1062 and the strip grooves 1071. At the same time, in order to diffuse the lubricating oil, an annular diffusion groove 1603 corresponding to the oil outlet on the swing arm mounting shaft 105 is provided on the lubricating oil guide sleeve 106.

[0076] like Figure 8 — Figure 10As shown, the swing arm structure 2 includes a swing arm body 209, a swing arm docking seat 203, and a vertical arm slide rail panel 208. The swing arm body 209 has an indentation 201 at its rear center and an outwardly projecting shell 204 corresponding to the indentation 201. The docking shaft 202 is vertically installed inside the outwardly projecting shell 204. One end of the swing arm body 209 has the swing arm docking seat 203, and the upper part of the other end has a drive motor 205 with its main shaft facing upwards. A transverse lead screw 207, with one end docking with the main shaft of the drive motor 205, is installed in the upper part of the swing arm body 209. The swing arm body 209 also has front and rear protruding... The boom slide rail panel 208 of the boom body 209 has front and rear extended portions that serve as sliding tracks. A boom base plate 301 is installed inside the lower part of the boom frame 3. The boom base plate 301 covers the front and rear sides of the boom slide rail panel 208, allowing relative sliding between the boom base plate 301 and the boom slide rail panel 208. An internal thread drive block 206 is installed on the lower end surface of the boom base plate 301. The internal thread drive block 206 is sleeved on the transverse lead screw 207, and the transverse lead screw 207 and the internal thread drive block 206 are threadedly matched. When the transverse lead screw 207 rotates, it can drive the internal thread drive block 206 to move along the direction of the transverse lead screw 207.

[0077] Several partition structures 210 are evenly installed inside the swing arm body 209, arranged in a parallel and spaced manner. The partition structures 210 can improve the overall structural strength of the swing arm body 209.

[0078] like Figure 14 and Figure 15 As shown, a docking joint 1001 is installed on the main shaft of the push cylinder 10. The docking joint 1001 is provided with a sleeve hole 1002 corresponding to the docking shaft 202. A docking shaft positioning sleeve 1003 is embedded in the upper and lower openings of the sleeve hole 1002.

[0079] The lower middle part of the docking shaft 202 is provided with a docking shaft oil injection channel 2021 that extends into the middle part of the docking shaft 202. The upper end of the docking shaft oil injection channel 2021 extends toward the outer ring of the docking shaft 202 to form an injection channel. The inner ring of the sleeve hole 1002, the outer ring of the docking shaft 202 and the two docking shaft positioning sleeves 1003 form a lubricating oil storage cavity 1004.

[0080] Conventional stretch bending machines typically use motors and electric cylinders as actuators. This type of stretch bending machine is mainly used for bending small decorative strips. If this equipment is used for bending large parts, the wear and tear on the equipment will increase significantly, affecting its service life. To solve this problem, the actuators inside the stretch bending machine need to be replaced, replacing the motor and electric cylinder with rotary hydraulic cylinders. To facilitate system operation, multiple control valve groups need to be installed inside the equipment, such as inside the machine base or on the boom. This will greatly increase the weight and overall size of the equipment, and significantly increase its energy consumption. To solve these problems, the hydraulic circuit structure of the stretch bending machine needs to be integrated.

[0081] like Figure 16 — Figure 19 As shown, an integrated hydraulic station and electrical distribution box are installed on the rear side of the bending machine. The hydraulic station and electrical distribution box are then connected to the bending machine via pipelines. A general cable mounting base 15 is installed on the upper rear side of the rear platform 8. A cable distribution base 16 is installed on the front side of the general cable mounting base 15. First cable carriers 17 connected to the cable distribution bases 16 are installed on both sides of the front end of the rear platform 8. The front ends of the first cable carriers 17 extend along both sides of the bending machine platform 1 and protrude from both sides of the front end of the bending machine platform 1. A first cable 18 is installed inside the first cable carrier 17. The first cable 18 extends out of the first cable carrier 17 and is fixed to the lower side of the outer convex shell 204 near the bending machine platform 1 via a cable bracket. A cable connector 20 is installed on the front end of the boom base plate 301. A second cable carrier 19 is installed between the lower front side of the swing arm structure 2 and the cable connector 20. The second cable carrier 19 bypasses the outer convex shell 204. An upper cable distribution base 2 is installed on the boom frame 3. 3. A side cable 22 is installed between the cable connector 20 and the upper cable holder 23. An injection arm cable distributor 25, which is connected to the injection arm mounting frame 4, is installed above the injection arm structure 5. The injection arm structure 5 is divided into two layers. A cable guide wheel 31 is rotatably installed on one end of the injection arm structure 5 and the rotating clamp assembly 6. Several parallel horizontal cables 26 are arranged on one side of the injection arm cable distributor 25. The horizontal cables 26 pass around the cable guide wheel. 31 extends into the upper and lower layers of the injection arm structure 5. An upper layer cable 27 is provided in the upper layer of the injection arm structure 5, and a lower layer cable 28 is provided in the lower layer of the injection arm structure 5. A chuck cable divider 29 is installed between the rotating chuck assembly 6 and the injection arm structure 5. A cylinder connecting cable 30 is installed between the upper side of the chuck cable divider 29 and the clamping cylinder of the rotating chuck assembly 6. An upper cable 24 is installed between the upper cable divider 23 and the upper side of the injection arm cable divider 25.

[0082] In this technical solution, there is no valve group structure controlling the hydraulic input and output within the entire bending machine, which avoids connecting the valve group to the equipment, greatly reducing the weight of the entire machine. At the same time, through reasonable cable layout, the external hydraulic station can drive the various actuators inside the bending machine. The actuators form a simple and clear cable layout, which is convenient for workers to maintain and avoids interference between cables and structural components during equipment operation, preventing cable tangling and equipment damage.

[0083] like Figure 19 As shown, the boom frame 3 includes a boom base plate 301, a boom side support 302, and a boom top plate 303. The boom side support 302 is vertically installed on the front and rear sides of the upper end of the boom base plate 301. The boom top plate 303 is horizontally arranged between the upper ends of the boom side support 302. The boom distribution box 304 is installed on the boom top plate 303.

[0084] like Figure 20 and Figure 21 As shown, the injection arm mounting frame 4 includes a mounting frame side plate 401, a mounting frame top plate 402, and a mounting frame bottom plate 403. Two vertical mounting frame side plates 401 are symmetrically mounted on the front and rear ends of the upper end of the mounting frame bottom plate 403. The mounting frame top plate 402 is mounted between the upper ends of the mounting frame side plates 401. An upper pivot 406 with its upper end passing through the vertical arm frame 3 is mounted in the middle of the upper end face of the mounting frame top plate 402. A lower pivot 405 that inserts into the vertical arm bottom plate 301 is mounted in the middle of the lower end face of the mounting frame bottom plate 403. Two slide rail structures 502 arranged vertically and horizontally are mounted on the front and rear sides of the injection arm structure 5. Several limiting slider seats 404 that cover the slide rail structures 502 are mounted on the side of the mounting frame side plate 401 near the injection arm structure 5.

[0085] like Figure 21 As shown, dust covers 503 corresponding to the slide rail structure 502 are installed between the middle of the left and right sides of the injection arm mounting frame 4 and between the left and right ends of the front and rear sides of the injection arm structure 5. The dust covers 503 have a foldable structure and cover the exposed part of the slide rail structure 502. When the injection arm mounting frame 4 moves left and right, the dust covers 503 will fold or unfold, thereby preventing the slide rail structure 502 from being exposed.

[0086] The upper end of the boom frame 3 is equipped with a swing arm push cylinder 305, and the upper end of the upper rotating shaft 406 is equipped with a swing arm 407. The swing arm 407 is connected to the main shaft of the swing arm push cylinder 305. When the main shaft of the swing arm push cylinder 305 performs the extension and retraction action, it can control the upper rotating shaft 406 to rotate forward and reverse, thereby realizing the swing action of the injection arm mounting frame 4 and the injection arm structure 5.

[0087] When the injection arm structure 5 performs the injection action, it pulls the cable on the injection arm structure 5. When the injection arm structure 5 returns to its original state, the cable cannot return to its original state, causing the cable to become coiled. Once the cable becomes coiled, repeated injection actions will cause the cables to become entangled. To solve the above problem, this technical solution installs a cable guide wheel 31 on one end of the injection arm structure 5. Figure 20 As shown, the cable guide 31 has extension shafts 3102 extending forward and backward at both ends. The extension shafts 3102 have cable guide posts 3103 facing the injection direction of the injection arm structure 5. The injection arm structure 5 has guide seats 3101 corresponding to the cable guide posts 3103 installed on its front and rear sides. There are four guide seats 3101 in total, installed on the front and rear sides of the injection arm structure 5. The cable guide posts 3103 pass laterally through the guide seats 3101. Figure 22 As shown, a downwardly extending docking pin 3105 is installed on the lower side of the extension shaft 3102. A gas spring 3104 is installed between the lower end of the docking pin 3105 and the injection arm structure 5. The gas spring 3104 is parallel to the guide post 3103 of the cable tray.

[0088] The principle by which the cable guide wheel 31 can reset the cable is as follows: when the injection arm structure 5 performs the injection action, the injection arm structure 5 pulls the cable. When the cable is pulled, the cable guide wheel 31 is subjected to tension. The cable guide wheel 31 moves through the cable guide wheel guide post 3103 and guide seat 3101, so that the cable guide wheel 31 is closer to the injection arm structure 5. The overall length of the cable on the upper side of the cable guide wheel 31 will decrease, while the length of the cable between the cable guide wheel 31 and the injection arm structure 5 will increase. When the injection arm structure 5 resets, the injection arm structure 5 releases the tension on the cable. Under the elastic force of the gas spring 3104, the distance between the cable guide wheel 31 and the injection arm structure 5 increases, the cable on the upper side of the cable guide wheel 31 returns to its original state, and the length of the cable between the cable guide wheel 31 and the injection arm structure 5 will decrease.

[0089] To ensure that the cable guide wheel 31 can smoothly drive the cable, the cable guide wheel 31 includes an extension shaft 3102, positioning rollers 3106, and cable rolling sleeve 3107. Two positioning rollers 3106 are rotatably mounted side by side on the middle of the extension shaft 3102. The cable rolling sleeve 3107 is sleeved on the outer ring of the positioning rollers 3106. A positioning sleeve sleeved on the middle of the extension shaft 3102 is installed between the two positioning rollers 3106. Several annular cable positioning grooves 3108 are evenly arranged on the outer ring of the cable rolling sleeve 3107.

[0090] like Figure 23 and Figure 24As shown, the injection arm structure 5 includes an injection arm body 501 and a lower injection cylinder 506. A rotating chuck assembly 6 is installed on one end of the injection arm body 501, and the other end extends upward, with an upper cylinder docking seat 504 installed inside the extension. An upper injection cylinder 408 with a main shaft and upper cylinder docking seat 504 is installed in the upper part of the injection arm mounting frame 4. The injection arm body 501 has a hollow interior forming an inner cavity structure 505. The lower injection cylinder 506 with its main shaft facing the rotating chuck assembly 6 is installed in the inner cavity structure 505. A plug-in core base mounting block 508 is installed on the main shaft of the lower injection cylinder 506. A plug-in core base 507 is rotatably installed on the side of the plug-in core base mounting block 508 near the lower injection cylinder 506.

[0091] To ensure stable injection during the lower injection cylinder 506 and to precisely control the injection volume, such as... Figure 25 As shown, a guide post mounting base 509 is installed near the cylinder body position of the lower injection cylinder 506. Guide post structures 511 parallel to the main shaft of the lower injection cylinder 506 are installed at the four corners of the guide post mounting base 509. One end of the guide post structure 511 extends horizontally to the rotating chuck assembly 6 and docks with the mating surface of the rotating chuck assembly 6. Guide sleeve structures 510 matching the guide post structure 511 are embedded at the four corners of the insertion and extraction core base mounting block 508.

[0092] The insert core base 507 is provided with a T-shaped interface 512 that rotates 90° counterclockwise on the side facing the clamping port of the rotating chuck assembly 6. Insert core fixing blocks 513 are installed on the front and rear sides of the T-shaped interface 512.

[0093] like Figure 26 — Figure 28 As shown, the rotary chuck assembly 6 includes a docking base 601, a turntable mounting housing 602, a docking shaft 603, and a clamping base 604. One side of the docking base 601 is docked with the injection arm structure 5, and the turntable mounting housing 602 is installed on the other side. One side of the turntable mounting housing 602 has an opening, and a turntable structure 618 is rotatably mounted inside the turntable mounting housing 602. The docking shaft 603, which docks with the turntable structure 618, is installed at the opening of the turntable mounting housing 602. The protruding end of the docking shaft 603 is connected to the clamping base 604.

[0094] like Figure 26As shown, the clamping base 604 is provided with a clamping port 609, which is rectangular. Clamping block structures are embedded in the four side walls inside the clamping base 604. An upper clamping cylinder 607 is installed on the upper side of the clamping base 604, and a front clamping cylinder 608 is installed on the front side of the clamping base 604. The main shaft of the upper clamping cylinder 607 is connected to the clamping block structure located on the upper side wall, and the main shaft of the front clamping cylinder 608 is connected to the clamping block structure located on the front side wall. This allows the upper clamping cylinder 607 and the front clamping cylinder 608 to clamp and fix the insert core 7 when they are activated. At the same time, a clamping assembly operating table 606 for controlling the start and stop of the upper clamping cylinder 607 and the front clamping cylinder 608 is installed on the front side of the turntable mounting housing 602.

[0095] like Figure 29 and Figure 30 As shown, one end of the docking shaft 603 is fitted together with a disc structure 613 and a turntable structure 618, and the other end is fitted together with a shaft structure 614 and a clamping base 604. Several notch structures 611 are evenly arranged on the edge of the disc structure 613. Locking bolts 612 are installed in the notch structures 611 to abut against the disc structure 613 and connect with the turntable structure 618. Four shaft lubricating oil docking nozzles 615 are evenly installed on the outer ring of the shaft structure 614. A lubricating oil tank 610 is installed on the docking base 601. The bottom of the lubricating oil tank 610 is connected to the shaft lubricating oil docking nozzles 615 through a pipe.

[0096] To improve the sealing between the docking shaft 603 and the disc structure 613, a disc gasket structure 617 is installed between them to be compressed by both.

[0097] like Figure 31 As shown, a rotating cylinder 605 with its main shaft vertically extending into the interior of the turntable mounting housing 602 is installed at the upper front part of the turntable mounting housing 602. A worm gear structure 616 is installed on the main shaft of the rotating cylinder 605. The worm gear structure 616 and the disc structure 613 form a worm wheel matching, thereby ensuring that the worm gear structure 616 can drive the disc structure 613 to rotate when it rotates.

[0098] Meanwhile, in order to further increase the stability of the worm structure 616 during operation, two conical limiting heads are symmetrically arranged on the upper and lower ends of the worm structure 616. The small diameter end of the conical limiting head is close to the middle of the worm structure 616, and the conical surface of the conical limiting head can abut against the outer arc surface of the disc structure 613.

[0099] like Figure 32As shown, the plug-in core 7 includes a T-shaped docking handle 701, a plug-in base 702, and a rod-shaped structure 703. The plug-in base 702 is installed on one end of the T-shaped docking handle 701. Several rod-shaped structures 703 are installed on the plug-in base 702 in a stacked arrangement. Several detachable insertion modules 704 that extend the length of the rod-shaped structures 703 are installed on the rod-shaped structures 703. An insertion head 705 is installed on the detachable insertion module 704 at the very end.

[0100] In this technical solution, the T-type docking handle 701 is mainly used to facilitate matching and docking with the T-type interface 512 to complete the fixation between the two. At the same time, the plug-in base 702 is used to facilitate docking with the clamping block structure, making the clamping block structure more secure and less likely to damage the plug-in core 7.

[0101] During the use of the insert core 7, different rod-shaped structures 703 can be selected and spliced ​​according to the different cross-sections of the insertion holes of the bent material to ensure that the rod-shaped structure 703 can fill the insertion holes of the bent material when inserted, thus ensuring the accuracy of the bending operation. At the same time, in order to facilitate the control of the overall length of the insert core 7, a detachable insertion module 704 is installed on the rod-shaped structure 703 to extend the length of the rod-shaped structure 703. The cross-section of the detachable insertion module 704 is the same as that of the long rod-shaped structure 703, and the long rod-shaped structure 703 and the detachable insertion module 704, as well as adjacent detachable insertion modules 704, are connected by a concave-convex structure. In addition, in order to facilitate the insertion of the insert core 7 into the insertion hole of the bent material, the insertion end edge of the insertion head 705 adopts a slightly reduced ball-shaped structure.

Claims

1. A horizontal bending machine with a plug-in core, characterized in that: The machine includes a bending machine base (1), a swing arm structure (2), and a vertical arm frame (3). A rear machine base (8) is installed on the rear side of the bending machine base (1). A mold placement platform (11) is installed on the upper surface of the bending machine base (1). A swing arm structure (2) is installed on both sides of the bending machine base (1). An indentation (201) is provided in the middle of the rear side of the swing arm structure (2). A vertically aligned docking shaft (202) is installed in the indentation (201). The rear machine base (8) A push cylinder (10) is installed between the rear end of the upper end face of the swing arm structure (2) and the docking shaft (202). A vertical arm frame (3) is slidably installed on the swing arm structure (2). An injection arm mounting frame (4) is installed inside the vertical arm frame (3). An injection arm structure (5) is slidably installed inside the injection arm mounting frame (4). A rotating chuck assembly (6) is installed on one end of the injection arm structure (5) near the mold placement table (11). A plug-in core (7) is installed on the clamping port of the rotating chuck assembly (6). The rear machine base (8) is equipped with a first drag chain (17) connected to the branch line seat (16) on both sides of the front end. The front end of the first drag chain (17) extends along both sides of the bending machine base (1) and extends out from both sides of the front end of the bending machine base (1). A first cable (18) is provided inside the first drag chain (17). The first cable (18) extends out of the first drag chain (17) and is fixed to the lower side of the outer convex shell (204) near the bending machine base (1) by the cable frame. At the same time, a cable connector (20) is installed at the front end of the vertical arm base plate (301). A second drag chain (19) is installed between the lower front side of the swing arm structure (2) and the cable connector (20). The second drag chain (19) bypasses the outer convex shell (204). The bending machine base (1) includes a rear support plate (101), a lower base plate (102) and a vertical bracket (103). The lower base plate (102) and the mold placement platform (11) are equipped with swing arm mounting shafts (105) that extend vertically toward the center of the bending machine platform (1). A lubricating oil guide sleeve (106) is sleeved on one end of the swing arm mounting shaft (105). A lubricating oil guide plate (107) is sleeved on the outer ring of the lubricating oil guide sleeve (106). A number of radially arranged strip grooves (1071) are evenly arranged on the upper and lower end surfaces of the lubricating oil guide plate (107). One end of the strip groove (1071) is connected to the inner ring of the lubricating oil guide plate (107). An annular guide groove (1072) is provided in the middle of the upper and lower end surfaces of the lubricating oil guide plate (107) or near the outer ring. A connecting through hole (1073) is provided at the node of the strip groove (1071) and the annular guide groove (1072). The swing arm structure (2) includes a swing arm body (209), a swing arm docking seat (203), and a vertical arm slide rail panel (208). The swing arm body (209) has an indentation (201) in the middle of its rear side, and an outwardly protruding shell (204) corresponding to the indentation (201) and protruding forward on the front side of the swing arm body (209). A wire guide wheel (31) is installed on one end of the injection arm structure (5). Extension shafts (3102) extending towards the front and rear sides are provided on both ends of the wire guide wheel (31). A wire guide wheel guide post (3103) facing the injection direction of the injection arm structure (5) is provided on the extension shaft (3102). Guide seats (3101) corresponding to the wire guide wheel guide posts (3103) are installed on the front and rear sides of the injection arm structure (5). There are at least four guide seats (3101), each installed on the front and rear sides of the injection arm structure (5). The wire guide wheel guide post (3103) passes laterally through the guide seat (3101). A downwardly extending docking pin (3105) is installed on the lower side of the extension shaft (3102). A gas spring (3104) is installed between the lower end of the docking pin (3105) and the injection arm structure (5). The gas spring (3104) and the wire guide wheel guide post (3103) are parallel. The injection arm structure (5) includes an injection arm body (501) and a lower injection cylinder (506). A rotating chuck assembly (6) is installed on one end of the injection arm body (501), and the other end extends upward to form an extension. An upper cylinder docking seat (504) is installed in the extension. An upper injection cylinder (408) that docks with the spindle and the upper cylinder docking seat (504) is installed in the upper part of the injection arm mounting frame (4). The ejection arm body (501) has a hollow interior forming an inner cavity structure (505). A lower ejection cylinder (506) with its main shaft facing the rotating chuck assembly (6) is installed inside the inner cavity structure (505). A plug-in core base mounting block (508) is installed on the main shaft of the lower ejection cylinder (506). A plug-in core base (507) is rotatably mounted on the side of the plug-in core base mounting block (508) near the lower ejection cylinder (506). The plug-in core (7) includes a T-shaped docking handle (701), a plug-in base (702), and a rod-shaped structure (703). The plug-in base (702) is installed on one end of the T-shaped docking handle (701). Several rod-shaped structures (703) are stacked vertically on the plug-in base (702). Several detachable insertion modules (704) that extend the length of the rod-shaped structures (703) are installed on the rod-shaped structures (703). An insertion head (705) is installed on the detachable insertion module (704) at the very end.

2. A horizontal bending machine with a plug-in core according to claim 1, characterized in that: The upper cable holder (23) is installed on the vertical arm frame (3), and a side cable (22) is installed between the cable connector (20) and the upper cable holder (23). An injection arm cable distributor (25) that connects to the injection arm mounting frame (4) is installed on the upper part of the injection arm structure (5). The injection arm structure (5) is divided into two layers. A cable guide wheel (31) is rotatably installed on one end of the injection arm structure (5) and the rotating chuck assembly (6) that are opposite to each other. Several parallel cables are arranged on one side of the injection arm cable distributor (25) and are in the same water. A horizontal cable (26) is provided on the horizontal line. The horizontal cable (26) passes around the cable guide wheel (31) and extends into the upper and lower layers of the injection arm structure (5). An upper cable (27) is provided in the upper layer of the injection arm structure (5), and a lower cable (28) is provided in the lower layer of the injection arm structure (5). A chuck branch seat (29) is installed between the rotating chuck assembly (6) and the injection arm structure (5). A cylinder connecting cable (30) is installed between the upper side of the chuck branch seat (29) and the clamping cylinder of the rotating chuck assembly (6).

3. A horizontal bending machine with a plug-in core according to claim 1, characterized in that: Two vertical supports (103) are installed side by side in the middle of the upper surface of the lower base plate (102). A rear support plate (101) is vertically installed on the rear side of the vertical supports (103). The mold placement platform (11) is installed on the upper end of the vertical supports (103).

4. A horizontal bending machine with a plug-in core according to claim 1, characterized in that: The docking shaft (202) is vertically installed inside the outer convex housing (204). One end of the swing arm body (209) is provided with a swing arm docking seat (203), and the upper part of the other end is equipped with a drive motor (205) with its main shaft facing upwards. A transverse lead screw (207) with one end connected to the main shaft of the drive motor (205) is installed inside the upper part of the swing arm body (209). A vertical arm slide rail panel (208) extending from the front and rear sides of the swing arm body (209) is installed on the swing arm body (209). The lower part of the boom frame (3) is equipped with a boom base plate (301) which covers the front and rear sides of the boom slide rail panel (208) so that the boom base plate (301) and the boom slide rail panel (208) can slide relative to each other. An internal thread drive block (206) is installed on the lower end surface of the boom base plate (301). The internal thread drive block (206) is sleeved on the transverse screw (207) and the transverse screw (207) and the internal thread drive block (206) are threaded together.

5. A horizontal bending machine with a plug-in core according to claim 1, characterized in that: The injection arm mounting frame (4) includes a mounting frame side plate (401), a mounting frame top plate (402), and a mounting frame bottom plate (403). Two vertical mounting frame side plates (401) are symmetrically mounted on the front and rear ends of the upper end of the mounting frame bottom plate (403). The mounting frame top plate (402) is mounted between the upper ends of the mounting frame side plates (401). An upper pivot (406) that passes through the vertical arm frame (3) is mounted in the middle of the upper end face of the mounting frame top plate (402). A lower pivot (405) that inserts into the vertical arm bottom plate (301) is mounted in the middle of the lower end face of the mounting frame bottom plate (403). Two slide rail structures (502) arranged vertically and horizontally are mounted on the front and rear sides of the injection arm structure (5). Several limiting slider seats (404) that cover the slide rail structures (502) are mounted on the side of the mounting frame side plate (401) near the injection arm structure (5).

6. A horizontal bending machine with a plug-in core according to claim 1, characterized in that: The rotary chuck assembly (6) includes a docking base (601), a turntable mounting housing (602), a docking shaft (603), and a clamping base (604). The docking base (601) is docked with the injection arm structure (5) on one side and the turntable mounting housing (602) is installed on the other side. An opening is provided on one side of the turntable mounting housing (602). A turntable structure (618) is rotatably installed inside the turntable mounting housing (602). A docking shaft (603) that docks with the turntable structure (618) is installed at the opening of the turntable mounting housing (602). The protruding end of the docking shaft (603) is connected to the clamping base (604).

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