Metal plate bending device

Abstract

The invention relates to the technical field of metal processing, and particularly discloses a metal plate bending device which comprises a supporting base, a workbench, a first rotating arm, a second rotating arm and two clamping frames, the workbench is installed at the top of the supporting base, and the first rotating arm and the second rotating arm are rotationally connected to the two sides of the supporting base correspondingly. The two clamping frames are arranged on the first rotating arm and the second rotating arm correspondingly, clamping plates are slidably connected to the interiors of the clamping frames so as to clamp the aluminum material, a barrel and two fixing discs, the barrel is arranged on the workbench and can move in the direction close to the aluminum material, the two fixing discs are both arranged in the barrel, and the fixing discs can rotate in the barrel; a plurality of limiting grooves are formed in the fixed disc, and the limiting grooves are arc-shaped; according to the metal plate bending device, the aluminum material can be bent step by step, so that the elastic restoring force on the aluminum material is released for multiple times, and the precision of the aluminum material after stretch bending can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, and in particular to a metal sheet bending device. Background Art

[0002] Aluminum is a product made of aluminum and other alloy elements. The main metal element is aluminum, and some alloy elements are added to improve the performance of aluminum. Aluminum is widely used in the construction industry, automotive industry, aerospace, electronics industry, photovoltaic industry, medical industry and other fields due to its excellent characteristics. Stretch bending machines can be divided into turntable stretch bending machines and double-arm stretch bending machines as well as various special stretch bending machines, such as shower room stretch bending machines, train top beam stretch bending machines, and elevator stretch bending machines. Stretch bending machines can cold bend various steel pipes, square pipes, H-shaped steels, I-beams, channel steels, angle irons, flat irons and aluminum profiles with sections below 500mm. In the processing of aluminum, stretch bending machines are usually used to bend aluminum into the shape required for processing to meet production needs.

[0003] The Chinese patent document with authorization announcement number CN217165968U discloses a drawing and bending machine for aluminum processing. The drawing and bending machine for aluminum processing has a snap-fit ​​sliding structure composed of a mounting sleeve and a pulling plate, so that the mounting sleeve can slide on the outside of the pulling plate to change the position of the first mounting plate and the second mounting plate above the device body, thereby facilitating the drawing and bending machine for aluminum processing to bend aluminum materials of different sizes, which is beneficial to improving the practicality of the drawing and bending machine for aluminum processing.

[0004] However, the structural design of the above-mentioned related technology is as follows: during the process of bending aluminum with a small arc, elastic restoring force will be generated in the aluminum, and the one-time bending makes it difficult to completely release the elastic restoring force in the aluminum, resulting in elastic recovery after bending, which makes it difficult for the precision of the aluminum to meet production requirements after bending. In severe cases, cracks or wrinkles will appear on the aluminum, and the aluminum needs to be corrected, which affects the production quality of the aluminum.

[0005] Therefore, a metal sheet bending device is proposed to solve the above-mentioned problems. Summary of the invention

[0006] The present invention provides a metal sheet bending device, aiming to solve the problem in the related art that the elastic restoring force is difficult to release during the bending process of aluminum materials.

[0007] The metal sheet bending device of the present invention comprises a support base, a workbench, a first rotating arm and a second rotating arm, wherein the workbench is installed on the top of the support base, and the first rotating arm and the second rotating arm are rotatably connected to the two sides of the support base respectively, and further comprises: Two clamping frames, the two clamping frames are respectively arranged on the first rotating arm and the second rotating arm, and the inside of the clamping frames is slidably connected with a clamping plate to clamp the aluminum material; The cylinder and two fixed disks, the cylinder is arranged on a workbench and can move toward the direction close to the aluminum material, the two fixed disks are arranged inside the cylinder, the fixed disks can rotate in the cylinder, and a plurality of limit grooves are opened on the fixed disks, and the limit grooves are arc-shaped; A plurality of connecting columns are distributed in an arc shape on the outer side of the cylinder with the axis of the cylinder as the center. A connecting rod is arranged on the connecting column. A sliding rod is arranged at one end of the connecting rod. The sliding rod is slidably arranged in the limiting groove.

[0008] The two ends of the aluminum material are clamped by two clamping plates, and the aluminum material is pulled against the connecting column by rotating the first and second rotating arms to bend the aluminum material. When the aluminum material is in contact with all the connecting columns, the clamping plates release the aluminum material, and then the elastic restoring force on the aluminum material is released by rotating the first and second rotating arms in the opposite directions. While the first and second rotating arms are reversed, the fixed disk pulls several connecting columns toward the cylinder through the sliding rod to reduce the curvature formed by the several connecting columns. During the rotation of the fixed disk, the cylinder approaches the aluminum material to make the adjusted several connecting columns contact the aluminum material, and then the aluminum material is clamped and bent again. When the aluminum material is in contact with all the connecting columns again, the above operations are repeated so that the aluminum material can be bent step by step, so that the elastic restoring force on the aluminum material is released multiple times to improve the accuracy of the aluminum material after bending.

[0009] Preferably, a rotating column is installed in the middle of the fixed disk, the rotating column is rotatably connected to the cylinder, the bottom end of the rotating column passes through the bottom end of the cylinder and extends to the outside of the cylinder, and the bottom end of the rotating column is provided with a threaded block.

[0010] Preferably, a transmission mechanism is provided inside the support seat, and the transmission mechanism has a screw, the threaded block is threadedly connected to the screw, a pushing member and a lifting assembly are provided on the second rotating arm, a connecting plate is slidably connected to the outer side of the pushing member, the connecting plate is installed at the bottom of the clamping plate located on the second rotating arm, the pushing member is located above the lifting assembly, the lifting assembly is slidably connected to the second rotating arm, and the lifting assembly can engage with the transmission mechanism.

[0011] After the clamp releases the aluminum material, the pusher can squeeze the lifting assembly to move the lifting assembly downward, and then the second rotating arm can drive the lead screw in the transmission mechanism to rotate through the lifting assembly, and the lead screw can drive the cylinder to approach the aluminum material through the threaded block.

[0012] Preferably, the pushing member includes a movable plate and an extrusion plate, the movable plate is slidably connected to the inside of the second rotating arm, the connecting plate is slidably connected to the outside of the movable plate, the movable plate is installed on one side of the extrusion plate, and the bottom of the extrusion plate is arc-shaped.

[0013] When the clamping plate releases the aluminum material, the clamping plate drives the movable plate to slide inside the second rotating arm through the connecting plate, and the movable plate squeezes the lifting component through the squeezing plate.

[0014] Preferably, the lifting assembly includes an extrusion block, a movable rod and a gear five, the movable rod is arranged on the inner bottom wall of the rotating arm two, the extrusion block is installed on the movable rod, the top side of the extrusion block has an arc surface, an elastic member is installed between the extrusion block and the inner bottom wall of the rotating arm two to drive the extrusion block to reset, the bottom end of the movable rod passes through the rotating arm two and extends to the outside of the rotating arm two, and the gear five is installed at the bottom end of the movable rod.

[0015] The movable plate drives the extrusion plate to slide on the top of the extrusion block. When the clamping plate releases the aluminum material, the extrusion plate presses down the extrusion block, and the extrusion block drives the gear five to move downward through the movable rod.

[0016] Preferably, the transmission mechanism includes a rotating rod, gear three and a driven assembly, the rotating rod is arranged at the bottom of the workbench, the gear three is installed on the rotating rod, the gear five can be meshed with gear three, the lifting assembly can be meshed with gear three, the driven assembly is meshed with gear three, and the lead screw is arranged on the driven assembly.

[0017] Preferably, the driven assembly includes a rotating rod, gear four, bevel gear one and bevel gear two, the rotating rod is rotatably connected to the workbench, the gear four is installed at the bottom end of the rotating rod, the gear four is meshed with gear three, the bevel gear one is installed on the outer side of the bottom end of the rotating rod, the bevel gear two is meshed and connected to one side of the bevel gear one, and one end of the lead screw is installed at one end of the bevel gear two.

[0018] After gear five moves down, it meshes with gear three. When arm two rotates, gear five rotates synchronously with arm two. At the same time, gear five drives the rotating rod on gear four to rotate through gear three, and the rotating rod drives the lead screw on bevel gear two to rotate through bevel gear one.

[0019] Preferably, the transmission mechanism further comprises a transmission assembly and a worm, wherein the transmission assembly is arranged on the lead screw, and the worm slides on the transmission assembly, and the lead screw can drive the worm to rotate through the transmission assembly.

[0020] Preferably, a fixed plate is installed on the threaded block, a rotating shaft is rotatably connected to the fixed plate, gear 2 is installed on the outer side of the top end of the rotating shaft, gear 1 is meshed with gear 2, gear 1 is installed on the rotating column, a worm wheel is installed on the outer side of the bottom end of the rotating shaft, and the worm wheel is meshed with the worm.

[0021] When the lead screw rotates, it drives the worm to rotate through the transmission assembly, the worm drives gear 2 to rotate through the rotating shaft on the worm wheel, gear 2 drives the rotating column to rotate through gear 1, thereby driving the fixed plate to rotate.

[0022] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: the aluminum material is clamped by the clamping plate, and the aluminum material is pulled and bent by rotating the rotating arm 1 and the rotating arm 2. When the aluminum material is in contact with all the connecting columns, the clamping plate releases the aluminum material, and then the rotating arm 1 and the rotating arm 2 rotate in opposite directions to release the elastic restoring force on the aluminum material. When the rotating arm 1 and the rotating arm 2 are reversed, the fixed plate pulls several connecting columns toward the cylinder body through the sliding rod to reduce the curvature formed by the several connecting columns. At the same time, the cylinder body approaches the aluminum material to make the adjusted several connecting columns contact the aluminum material, and then the aluminum material is clamped and bent again. When the aluminum material is in contact with all the connecting columns again, the above operation is repeated so that the aluminum material can be bent step by step, so that the elastic restoring force on the aluminum material can be released multiple times, thereby improving the accuracy of the aluminum material after bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0024] Figure 2 It is a schematic structural diagram of a support base according to a specific embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of the internal structure of a support base in a specific embodiment of the present invention.

[0026] Figure 4 It is a schematic structural diagram of a mold according to a specific embodiment of the present invention.

[0027] Figure 5 It is a schematic diagram of the internal structure of the cylinder of a specific embodiment of the present invention.

[0028] Figure 6 It is a schematic diagram of the top structure of the fixed disk in a specific embodiment of the present invention.

[0029] Figure 7 It is a structural schematic diagram of the adjustment mechanism of a specific embodiment of the present invention.

[0030] Figure 8 It is a schematic diagram of the internal structure of the rotating arm 2 in a specific embodiment of the present invention.

[0031] Fig. 9 It is a schematic structural diagram of a lifting assembly in a specific embodiment of the present invention.

[0032] Reference numerals: 11. Support seat; 12. Workbench; 13. Storage slot; 14. Accommodation slot; 15. Through slot; 16. Installation cavity; 21. Rotating arm 1; 22. Rotating arm 2; 23. Sliding slot 1; 24. Driving member; 31. Mounting cylinder; 311. Cylinder body; 312. Slide plate; 32. Bending arc assembly; 321. Connecting rod; 322. Fixing frame; 323. Connecting column; 324. Fixing sleeve; 325. Slide rod; 33. Adjusting assembly; 331. Rotating column; 332. Gear 1; 333. Fixing plate; 334. Limiting groove; 34. Thread block; 35. Gear 2; 36. Worm gear; 37. Rotating shaft; 38. Fixing plate; 41. Rotating rod; 42. Gear three; 43. Driven assembly; 431. Rotating rod; 432. Gear four; 433. Bevel gear one; 434. Bevel gear two; 44. Lead screw; 45. Transmission assembly; 451. Transmission wheel one; 452. Transmission wheel two; 453. Internal spline shaft one; 454. Transmission member; 46. External spline shaft one; 47. Worm; 48. Mounting plate; 51, pusher; 511, movable plate; 512, extrusion plate; 52, connecting plate; 53, sliding sleeve; 54, guide rod; 55, lifting assembly; 551, extrusion block; 552, movable rod; 553, gear 5; 554, inner spline shaft 2; 555, elastic member; 56, outer spline shaft 2; 61. Mounting frame; 62. Telescopic member 1; 63. Clamping assembly; 631. Clamping frame; 632. Support frame; 633. Telescopic member 2; 634. Clamping plate; 635. Slide groove 2. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] like Figures 1 to 9 As shown, the metal sheet bending device of the present invention includes a support mechanism, a driving mechanism, a mold, a transmission mechanism, an adjustment mechanism and a clamping mechanism. The mold is arranged on the top of the support mechanism, and the driving mechanism is arranged on the support mechanism for pulling the aluminum material to bend. The transmission mechanism is arranged inside the support mechanism for adjusting the mold and driving the mold to move in a direction close to the aluminum material. The adjustment mechanism is arranged in the driving mechanism, and there are two clamping mechanisms for clamping the two ends of the aluminum material, and both clamping mechanisms are arranged on the driving mechanism.

[0035] like Figures 1 to 3 As shown, the support mechanism includes a support seat 11 and a workbench 12. The workbench 12 is installed on the top of the support seat 11, and both sides of the top of the support seat 11 are provided with receiving grooves 13 for accommodating the drive mechanism. A receiving groove 14 is provided at the bottom of one of the receiving grooves 13, and an installation cavity 16 is provided inside the support seat 11, and a through groove 15 connected to the installation cavity 16 is provided on the inner wall of the receiving groove 14.

[0036] like Figure 1 , Figure 2 and Figure 8 As shown, the driving mechanism includes a rotating arm 1 21, a rotating arm 22 and two driving members 24. The rotating arm 1 21 and the rotating arm 22 are respectively rotatably connected to one side of the inner bottom wall of the receiving groove 13, and the receiving groove 14 is located at the bottom side of the rotating arm 2 22. The interior of the rotating arm 2 22 has a cavity, and the top of the rotating arm 2 22 is provided with a slide groove 1 23 connected to the cavity in the rotating arm 2 22. The two driving members 24 are respectively arranged at the bottom side of the rotating arm 1 21 and the rotating arm 2 22. In this embodiment, the driving member 24 is a servo motor, and the driving member 24 is installed inside the support seat 11. The two clamping mechanisms are respectively arranged at the top side of the rotating arm 1 21 and the rotating arm 2 22.

[0037] When the aluminum material is bent, two clamping mechanisms are used to clamp the two ends of the aluminum material, and the aluminum material is placed against the mold. Then, the two driving members 24 drive the first rotating arm 21 and the second rotating arm 22 to rotate, so that the aluminum material is bent under the action of the mold.

[0038] like Figure 1 , Figure 3 and Figure 4 As shown, the mold includes a mounting cylinder 31, a plurality of arc bending components 32 and an adjusting component 33. The plurality of arc bending components 32 are arranged on the outside of the mounting cylinder 31, and the plurality of arc bending components 32 are distributed in an arc shape with the axis of the mounting cylinder 31 as the center, and the adjusting component 33 is arranged inside the mounting cylinder 31. By rotating the adjusting component 33, the plurality of arc bending components 32 can be driven to approach each other to adjust the curvature formed by the plurality of arc bending components 32, so that aluminum materials with different curvatures can be bent.

[0039] like Figures 1 to 4 As shown, the installation cylinder 31 includes a cylinder body 311 and a slide plate 312. The cylinder body 311 is installed on the top of the slide plate 312, and the cylinder body 311 is located on the top of the workbench 12. The workbench 12 is provided with a groove for the slide plate 312 to slide.

[0040] like Figures 3 to 6 As shown, the bending component 32 includes a connecting rod 321, a fixing frame 322 and a connecting column 323. The fixing frame 322 is installed at one end of the connecting rod 321. In this embodiment, the fixing frame 322 is U-shaped. The connecting column 323 is rotatably connected to the inside of the fixing frame 322, and the fixing frame 322 is extended from the outside of the connecting column 323. The other end of the connecting rod 321 passes through the cylinder 311 and extends to the inside of the cylinder 311. The cylinder 311 is slidably connected to the connecting rod 321, and a fixing sleeve 324 is installed at the other end of the connecting rod 321. A sliding rod 325 is installed inside the fixing sleeve 324, and the bottom of the sliding rod 325 is slidably connected to the inner bottom wall of the cylinder 311.

[0041] like Figures 3 to 6As shown, the adjustment assembly 33 includes a rotating column 331 and two fixed disks 333. The top of the rotating column 331 is rotatably connected to the middle of the inner top wall of the cylinder 311, the bottom of the rotating column 331 passes through the bottom of the cylinder 311 and extends into the mounting cavity 16 of the support seat 11, and a gear 1 332 is installed on the outer side of the bottom of the rotating column 331. The two fixed disks 333 are both installed on the outer side of the rotating column 331, and the fixing sleeve 324 is located between the two fixed disks 333. A plurality of limiting grooves 334 are provided on the fixed disk 333, and the limiting grooves 334 are in an arc shape, and the slide rod 325 is slidably connected in the limiting grooves 334.

[0042] When the rotating column 331 rotates, the rotating column 331 drives the fixed plate 333 to rotate synchronously. At this time, under the limit of the limit groove 334, the sliding rod 325 can be driven to approach the rotating column 331. At the same time, the sliding rod 325 drives the connecting column 323 to approach the cylinder 311 through the connecting rod 321, thereby reducing the curvature formed by several connecting columns 323.

[0043] like Figure 4 and Figure 5 As shown, the bottom end of the rotating column 331 is rotatably connected to the threaded block 34, a fixed plate 38 is installed at the bottom of one side of the threaded block 34, the top of the fixed plate 38 is rotatably connected to the rotating shaft 37, a gear 2 35 is installed on the outer side of the top end of the rotating shaft 37, the gear 2 35 is meshed with the gear 1 332, and a worm gear 36 is installed on the outer side of the bottom end of the rotating shaft 37.

[0044] like Figure 3 to Figure 4 As shown, the transmission mechanism is located in the mounting cavity 16 of the support seat 11, and the transmission mechanism includes a rotating rod 41, a gear 3 42, a driven assembly 43, a lead screw 44, a transmission assembly 45, an external spline shaft 1 46 and a worm 47. The rotating rod 41 is rotatably connected to the bottom of the workbench 12, and the gear 3 42 is installed at the bottom end of the rotating rod 41. The gear 3 42 is located in the through groove 15, and the gear 3 42 is meshed with the driven assembly 43. One end of the lead screw 44 is installed on the driven assembly 43, and the transmission assembly 45 is arranged on the lead screw 44. The lead screw 44 is threadedly connected in the thread block 34, and the other end of the lead screw 44 passes through the thread block 34 and is rotatably connected to the inner wall of the support seat 11. The external spline shaft 1 46 is slidably connected in the transmission assembly 45, and the worm 47 is installed at one end of the external spline shaft 1 46, and the worm 47 is meshed with the worm wheel 36, and the fixed plate 38 is rotatably connected with the worm 47 through the support plate.

[0045] like Figures 3 to 7As shown, the driven assembly 43 includes a rotating rod 431, a gear 432, a bevel gear 1 433 and a bevel gear 2 434. The rotating rod 431 is rotatably connected to the bottom of the workbench 12, the gear 432 is mounted at the bottom end of the rotating rod 431, the gear 432 is meshed with the gear 3 42, the bevel gear 1 433 is mounted on the outer side of the bottom end of the rotating rod 431, the bevel gear 2 434 is meshed and connected to one side of the bevel gear 1 433, and one end of the lead screw 44 is mounted on one end of the bevel gear 2 434.

[0046] Continue to refer Figures 3 to 7 As shown, the transmission assembly 45 includes a transmission wheel 1 451, a transmission wheel 2 452, an inner spline shaft 1 453 and a transmission member 454. The transmission wheel 1 451 is mounted on the outer side of one end of the lead screw 44, and the transmission wheel 2 452 is mounted on the outer side of one end of the inner spline shaft 1 453. The outer sides of the lead screw 44 and the inner spline shaft 1 453 are both rotatably connected with a mounting plate 48 to support the lead screw 44 and the inner spline shaft 1 453, and the mounting plate 48 is mounted on the bottom of the workbench 12.

[0047] The transmission member 454 is arranged on the transmission wheel 1 451 and the transmission wheel 2 452. In this embodiment, the transmission wheel 1 451 and the transmission wheel 2 452 are both pulleys, and the transmission member 454 is a belt. In other embodiments, the transmission wheel 1 451 and the transmission wheel 2 452 are both sprockets, and the transmission member 454 is a chain. The outer spline shaft 1 46 is slidably connected to the inner spline shaft 1 453. A baffle is installed at one end of the outer spline shaft 1 46 that passes through the inner spline shaft 1 453 to prevent the inner spline shaft 1 453 and the outer spline shaft 1 46 from slipping off.

[0048] When gear three 42 rotates, gear three 42 drives bevel gear one 433 on rotating rod 431 to rotate through gear four 432, and bevel gear one 433 drives lead screw 44 to rotate through bevel gear two 434. At this time, lead screw 44 drives several connecting columns 323 on cylinder 311 to approach aluminum material through thread block 34. When thread block 34 moves, worm wheel 36 drives worm 47 to move synchronously with thread block 34, and at the same time, outer spline shaft one 46 slides in inner spline shaft one 453. During the rotation of the lead screw 44, the lead screw 44 drives the worm 47 on the inner spline shaft 1 453 to rotate through the transmission assembly 45, and the worm 47 drives the worm wheel 36 to drive the gear 2 35 on the rotating shaft 37 to rotate. At the same time, the gear 2 35 drives the fixed plate 333 on the rotating column 331 to rotate through the gear 1 332, thereby reducing the arc formed by the several connecting columns 323. At the same time, the support plate on the fixed plate 38 can limit the lateral movement of the worm 47 to prevent the connecting column 323 from driving the worm wheel 36 to rotate when it is under pressure, so as to ensure the stability of the several connecting columns 323 after adjustment.

[0049] like Figure 1 and Figure 8As shown, the adjustment mechanism includes a pusher 51 and a lifting assembly 55 . The pusher 51 is located in the cavity of the second rotating arm 22 . The lifting assembly 55 is arranged on one side of the inner bottom wall of the second rotating arm 22 . The pusher 51 is arranged on the top of the lifting assembly 55 .

[0050] Continue to refer Figure 1 and Figure 8 As shown, the pusher 51 includes a movable plate 511 and a squeeze plate 512. The movable plate 511 is installed on one side of the squeeze plate 512, and the bottom of the squeeze plate 512 is arc-shaped. The outer side of the movable plate 511 is slidably connected with a connecting plate 52, and the top of the connecting plate 52 is located in the slide groove 1 23. Both sides of the bottom of the movable plate 511 are installed with sliding sleeves 53, and the inside of the sliding sleeves 53 is slidably connected with a guide rod 54. The two ends of the guide rod 54 are respectively fixed to the two sides of the inner wall of the rotating arm 22.

[0051] like Figures 7 to 9 As shown, the lifting assembly 55 includes an extrusion block 551, a movable rod 552, a gear 553 and an inner spline shaft 554. The movable rod 552 is arranged on one side of the inner bottom wall of the second rotating arm 22, and the movable rod 552 can slide along the height direction of the second rotating arm 22. The extrusion block 551 is installed at the top of the movable rod 552, and one side of the top of the extrusion block 551 has an arc surface. In the initial state, the bottom of the extrusion plate 512 is located at the top of the extrusion block 551. An elastic member 555 is installed between the extrusion block 551 and the inner bottom wall of the second rotating arm 22. In this embodiment, the elastic member 555 is a spring, and in other embodiments, the elastic member 555 is an elastic sheet.

[0052] The bottom end of the movable rod 552 passes through the pivot arm 22 and extends to the outside of the pivot arm 22. The gear 553 is installed at the bottom end of the movable rod 552. The gear 553 can mesh with the gear 3 42. The inner spline shaft 2 554 is installed at the bottom end of the gear 553. The inner spline shaft 2 554 is slidably connected to the outer spline shaft 2 56. The bottom end of the outer spline shaft 2 56 is installed on the driving member 24 located at the bottom of the pivot arm 22.

[0053] The extrusion block 551 is extruded by the extrusion plate 512, and the extrusion block 551 drives the gear 5 553 to move downward through the movable rod 552 and mesh with the gear 3 42. Then, the driving member 24 at the bottom of the second rotating arm 22 drives the second internal spline shaft 554 to rotate in the reverse direction, thereby driving the second rotating arm 22 to rotate in the reverse direction. At the same time, the second internal spline shaft 554 drives the gear 3 42 to rotate through the gear 5 553, so that the fixed disk 333 in the cylinder 311 rotates, thereby reducing the arc formed by the plurality of connecting columns 323.

[0054] like Figure 1 and Figure 8As shown, the clamping mechanism includes a mounting frame 61, a telescopic member 1 62 and a clamping assembly 63. The mounting frames 61 in the two clamping mechanisms are respectively mounted on one side of the top of the rotating arm 1 21 and the rotating arm 2 22. The telescopic member 1 62 is mounted on the mounting frame 61. In this embodiment, the telescopic member 1 62 is a hydraulic cylinder, and the clamping assembly 63 is mounted on the movable end of the telescopic member 1 62.

[0055] Continue to refer Figure 1 and Figure 8 As shown, the clamping assembly 63 includes a clamping frame 631, a support frame 632, a telescopic member 633 and a clamping plate 634. The clamping frames 631 in the two clamping mechanisms are respectively connected to the top of the rotating arm 1 21 and the rotating arm 2 22 in a sliding manner, and one side of the clamping frame 631 has an opening so that the end of the aluminum material can extend into the clamping frame 631. The support frame 632 is installed on one side of the clamping frame 631, and the shape of the support frame 632 is U-shaped. The fixed end of the telescopic member 633 is installed on one side of the inner wall of the support frame 632. In this embodiment, the telescopic member 633 is a hydraulic cylinder, and the clamping plate 634 is installed on the movable end of the telescopic member 633. The clamping plate 634 is slidably connected to the inside of the clamping frame 631.

[0056] like Figure 8 As shown, the clamping plate 634 located on the second rotating arm 22 is installed on the top of the connecting plate 52, and the bottom of the clamping frame 631 located on the second rotating arm 22 is provided with a second sliding groove 635 for the connecting plate 52 to slide.

[0057] Working principle: When bending aluminum, insert the two ends of the aluminum into the two clamping frames 631 respectively, and then start the telescopic member 2 633. At this time, the telescopic member 2 633 pushes the clamping plate 634 to clamp the two ends of the aluminum. During the movement of the clamping plate 634 on the rotating arm 22, the clamping plate 634 on the rotating arm 22 drives the extrusion plate 512 to move along the arc surface on the extrusion block 551 through the connecting plate 52, so that the extrusion plate 512 moves to the lowest point of the arc surface of the extrusion block 551. At this time, under the action of the elastic member 555, the elastic member 555 pushes the extrusion block 551 to move upward, and the extrusion block 551 drives the gear five 553 to disengage from the gear three 42 through the movable rod 552.

[0058] After the aluminum material is clamped, the two driving members 24 drive the two rotating arms 1 21 and the rotating arm 2 22 to rotate, so as to pull the aluminum plate to bend against the connecting column 323. When the aluminum material is in contact with all the connecting columns 323, the telescopic member 2 633 drives the clamping plate 634 to reset. At this time, the extrusion plate 512 squeezes the extrusion block 551, and the extrusion block 551 drives the gear 5 553 to move down and mesh with the gear 3 42. Then the two driving members 24 drive the rotating arm 1 21 and the rotating arm 2 22 to reverse, so as to release the elastic restoring force on the aluminum material. During the release of the elastic restoring force on the aluminum material, the end of the aluminum material is always attached to the inner wall of the clamping frame 631. After the elastic restoring force on the aluminum material is released, the rotating arm 1 21 and the rotating arm 2 22 stop reversing. During the reversal of the rotating arm 1 21 and the rotating arm 22, the gear 5 553 drives the gear 3 42 to rotate, thereby driving the lead screw 44 and the worm 47 to rotate.

[0059] When the worm 47 rotates, the worm 47 drives the second gear 35 on the rotating shaft 37 to rotate through the worm wheel 36, and the second gear 35 drives the fixed plate 333 on the rotating column 331 to rotate through the first gear 332, thereby reducing the arc formed by the plurality of connecting columns 323. When the lead screw 44 rotates, the thread block 34 moves along the length direction of the lead screw 44, so that the plurality of connecting columns 323 on the cylinder 311 with reduced arcs are moved closer to the aluminum material.

[0060] When the several connecting columns 323 with reduced curvature come into contact with the aluminum material, the telescopic member 2 633 drives the clamping plate 634 to clamp the aluminum material again, the gear 553 is disengaged from the gear 3 42, and then the rotating arm 1 21 and the rotating arm 2 22 continue to pull the aluminum material to bend, and when the aluminum material fits with the several connecting columns 323 again, the above operation is repeated until the aluminum material is bent into shape. Through the above operation, the aluminum material can be bent step by step, and at the same time, the elastic restoring force on the aluminum material can be released when the aluminum material is bent in a small curvature, thereby preventing unnecessary deformation of the aluminum material after bending, thereby improving the bending accuracy of the aluminum material.

[0061] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A metal sheet bending device, comprising a support base (11), a workbench (12), a first rotating arm (21) and a second rotating arm (22), wherein the workbench (12) is mounted on the top of the support base (11), and the first rotating arm (21) and the second rotating arm (22) are rotatably connected to two sides of the support base (11), respectively, characterized in that: Also includes: Two clamping frames (631), the two clamping frames (631) are respectively arranged on the first rotating arm (21) and the second rotating arm (22), and the interior of the clamping frames (631) is slidably connected with a clamping plate (634) for clamping the aluminum material; A cylinder (311) and two fixed disks (333), wherein the cylinder (311) is disposed on a workbench (12) and is capable of moving in a direction close to the aluminum material, and the two fixed disks (333) are both disposed inside the cylinder (311), and the fixed disks (333) are capable of rotating in the cylinder (311), and a plurality of limiting grooves (334) are provided on the fixed disks (333), and the limiting grooves (334) are arc-shaped; A plurality of connecting columns (323) are distributed in an arc shape on the outside of the cylinder (311) with the axis of the cylinder (311) as the center. A connecting rod (321) is provided on the connecting column (323). A sliding rod (325) is provided at one end of the connecting rod (321). The sliding rod (325) is slidably arranged in the limiting groove (334).

2. The metal sheet bending device according to claim 1, characterized in that: A rotating column (331) is installed in the middle of the fixed disk (333). The rotating column (331) is rotatably connected to the cylinder (311). The bottom end of the rotating column (331) penetrates the bottom end of the cylinder (311) and extends to the outside of the cylinder (311). A threaded block (34) is provided at the bottom end of the rotating column (331).

3. The metal sheet bending device according to claim 2, characterized in that: A transmission mechanism is provided inside the support seat (11), wherein the transmission mechanism has a lead screw (44), the threaded block (34) is threadedly connected to the lead screw (44), a pusher (51) and a lifting assembly (55) are provided on the second rotating arm (22), a connecting plate (52) is slidably connected to the outer side of the pusher (51), the connecting plate (52) is mounted on the bottom of a clamping plate (634) located on the second rotating arm (22), the pusher (51) is located above the lifting assembly (55), the lifting assembly (55) is slidably connected to the second rotating arm (22), and the lifting assembly (55) can mesh with the transmission mechanism.

4. The metal sheet bending device according to claim 3, characterized in that: The pushing member (51) comprises a movable plate (511) and an extrusion plate (512); the movable plate (511) is slidably connected to the inside of the second rotating arm (22); the connecting plate (52) is slidably connected to the outside of the movable plate (511); the movable plate (511) is mounted on one side of the extrusion plate (512); and the bottom of the extrusion plate (512) is arc-shaped.

5. The metal sheet bending device according to claim 4, characterized in that: The lifting assembly (55) comprises an extrusion block (551), a movable rod (552) and a gear five (553); the movable rod (552) is arranged on the inner bottom wall of the second rotating arm (22); the extrusion block (551) is mounted on the movable rod (552); one side of the top of the extrusion block (551) has an arc surface; an elastic member (555) is installed between the extrusion block (551) and the inner bottom wall of the second rotating arm (22) to drive the extrusion block (551) to reset; the bottom end of the movable rod (552) passes through the second rotating arm (22) and extends to the outside of the second rotating arm (22); and the gear five (553) is mounted on the bottom end of the movable rod (552).

6. The metal sheet bending device according to claim 5, characterized in that: The transmission mechanism comprises a rotating rod (41), a gear three (42) and a driven assembly (43); the rotating rod (41) is arranged at the bottom of the workbench (12); the gear three (42) is mounted on the rotating rod (41); the gear five (553) can mesh with the gear three (42); the lifting assembly (55) can mesh with the gear three (42); the driven assembly (43) meshes with the gear three (42); and the lead screw (44) is arranged on the driven assembly (43).

7. The metal sheet bending device according to claim 6, characterized in that: The driven assembly (43) comprises a rotating rod (431), a gear four (432), a bevel gear one (433) and a bevel gear two (434); the rotating rod (431) is rotatably connected to the workbench (12); the gear four (432) is mounted at the bottom end of the rotating rod (431); the gear four (432) is meshed with the gear three (42); the bevel gear one (433) is mounted on the outside of the bottom end of the rotating rod (431); the bevel gear two (434) is meshed and connected to one side of the bevel gear one (433); and one end of the lead screw (44) is mounted at one end of the bevel gear two (434).

8. The metal sheet bending device according to claim 7, characterized in that: The transmission mechanism further comprises a transmission assembly (45) and a worm (47); the transmission assembly (45) is arranged on the lead screw (44); the worm (47) slides on the transmission assembly (45); and the lead screw (44) can drive the worm (47) to rotate via the transmission assembly (45).

9. The metal sheet bending device according to claim 8, characterized in that: A fixing plate (38) is mounted on the threaded block (34), a rotating shaft (37) is rotatably connected to the fixing plate (38), a second gear (35) is mounted on the outer side of the top end of the rotating shaft (37), a first gear (332) is meshed with the second gear (35), the first gear (332) is mounted on the rotating column (331), a worm wheel (36) is mounted on the outer side of the bottom end of the rotating shaft (37), and the worm wheel (36) is meshed with the worm (47).

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