Pipe double-bending forming machine

Abstract

The invention belongs to the technical field of bending machines, and particularly relates to a pipe double-bending forming machine which comprises a base, a pressing mechanism and two bending mechanisms. The pressing mechanism is arranged on the base, an upper die and a lifting part of the pressing mechanism are arranged at the upper end and the lower end of the mounting base respectively, a lower die is arranged on the lifting part, and clamping grooves are formed in the top side of the upper die and the bottom side of the lower die; the two bending mechanisms are symmetrically located on the two sides of the pressing mechanism, guide rails are arranged on the base, moving seats of the bending mechanisms are slidably connected with the guide rails, and translation driving pieces are connected with the moving seats. The rotating shaft is rotationally connected with the moving seat; the rolling wheel and the connecting base are arranged on the rotating shaft, a pressing driving piece is arranged at the end, away from the rotating shaft, of the connecting base, and the pressing block is arranged on the pressing driving piece; the rolling wheel is provided with an annular groove, the pressing block is provided with a limiting groove, and the annular groove and the limiting groove form a bending clamping position. The two bending mechanisms bend the two ends of the pipe, and efficiency is improved; and the translation driving part drives the moving seat to move, so that the bending mechanism bends and forms different positions of the pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of bending machines, and in particular relates to a pipe double-bending forming machine. Background Art

[0002] With the development of society, there are more and more pipe bending equipment on the market, but generally they can only bend one position of the pipe.

[0003] For example, the Chinese patent document with the announcement number CN221869849U discloses a bending machine for pipe processing, including a table body, two guide blocks are fixedly connected to the table body, each guide block is fixedly connected to a fixed frame, each fixed frame is slidably connected to a first clamping block and two second clamping blocks, and the upper end of each first clamping block is fixedly connected to a cross plate; a hydraulic cylinder is arranged on the table body, a bending rod is fixedly connected to the driving end of the hydraulic cylinder, a pressure wheel is arranged on the bending rod, an extrusion assembly is arranged on the bending rod, the extrusion assembly includes an extrusion block with a T-shaped cross section, a sliding groove is provided on the bending rod, the extrusion block and the sliding groove are slidably connected, a first spring is fixedly connected to the upper inner wall of the sliding groove, and the first spring is fixedly connected to the extrusion block. The first clamping block and the second clamping block limit the position of the pipe, the pressure wheel moves downward to bend the pipe, and the pipe and the first clamping block and the second clamping block slide relative to each other laterally.

[0004] In the technical solution of the above patent document, the pipe needs to be placed in two fixed frames on the table to limit the position, and then the pipe is bent at one point by a pressure wheel. If the pipe needs to be bent multiple times, the overall position of the pipe needs to be readjusted and bent again, which reduces production efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a pipe double-bending forming machine to solve the problems of low automation and slow bending efficiency of existing bending equipment.

[0006] To achieve the above-mentioned purpose, an embodiment of the present invention provides a double-bending forming machine for pipes, comprising a base, a clamping mechanism and two bending mechanisms; the clamping mechanism is arranged on the base, and the clamping mechanism comprises a mounting seat, an upper die, a lifting member and a lower die, the mounting seat is arranged on the base, a supporting portion is extended from the upper end of the mounting seat, the upper die is arranged on the bottom side of the supporting portion, the lifting member is arranged at the lower end of the mounting seat, and the lower die is arranged on the lifting member, and the top side of the upper die and the bottom side of the lower die are both provided with clamping grooves for clamping the pipe to be bent; two groups of the bending mechanisms are arranged on the base and are symmetrically located on both sides of the clamping mechanism; the bending mechanism comprises a moving seat, a translation driving member, a rotating shaft , a rotating drive member, a connecting seat, a roller, a pressure block and a clamping drive member; a guide rail is provided on the base, the movable seat is slidably connected to the guide rail, and the translational drive member is connected to the movable seat for driving the movable seat to move along the guide rail; the rotating shaft is rotatably connected to the movable seat, and the rotating drive member is connected to the rotating shaft for driving the rotating shaft to rotate; the roller and the connecting seat are arranged on the rotating shaft, and a mounting portion is provided at one end of the connecting seat away from the rotating shaft, the clamping drive member is arranged on the mounting portion, and the pressure block is arranged at the moving end of the clamping drive member; the roller is provided with an annular groove, and the pressure block is provided with a limiting groove, and the annular groove and the limiting groove form a bending clamping position.

[0007] Furthermore, the pressing block includes a fixed seat, a slider and an elastic member, the fixed seat is connected to the clamping drive member, the slider is slidably connected to the fixed seat, the limiting groove is arranged on the slider, the elastic member connects the slider and the fixed seat, and when the bending mechanism bends the tube, the slider overcomes the elastic force of the elastic member and slides on the fixed seat.

[0008] Furthermore, the rotary drive member includes a first gear, a telescopic member and a first rack, the first gear is sleeved on the rotating shaft, the telescopic member is arranged in the moving seat, and the first rack is connected to the telescopic member and meshes with the first gear.

[0009] Furthermore, it also includes a straightening device and a transfer robot, the straightening device is arranged on the base and is used to straighten the pipe; the straightening device includes a plurality of pushing mechanisms arranged on the base, adjacent pushing mechanisms are provided with a spacing and a support frame; the pushing mechanism includes a base, a pushing drive, a fixed correction block and a movable correction block; the base has two side plates extending upward, the fixed correction block is arranged on the inner side of one of the side plates, the pushing drive is arranged on the other side plate, the movable correction block is arranged on the pushing drive, and correction grooves are provided on the opposite sides of the movable correction block and the fixed correction block; a support guide rod is also provided between the movable correction block and the fixed correction block, and the support guide rod is used for the movable correction block to guide and support the pipe; the transfer robot is arranged above the base, and is used to clamp the pipe of the straightening device and transfer it to the clamping mechanism.

[0010] Furthermore, corresponding sides of the movable correction pressure block and the fixed correction pressure block are also provided with avoidance grooves coaxial with the correction groove, the diameter of the avoidance groove is larger than the diameter of the correction groove, and the correction grooves are distributed at both ends of the avoidance groove; an elastic rubber block is also provided in the avoidance groove of the movable correction pressure block, and the elastic rubber block is located on the diameter of the correction groove.

[0011] Furthermore, it also includes a feeding device, which is arranged on one side of the base, and the feeding device is used to transport the pipe to the straightening device.

[0012] Furthermore, the feeding device includes a lifting mechanism and a transfer mechanism; the lifting mechanism includes a material rack, a chain transmission mechanism, an inclined plate and a limit piece; the chain transmission mechanism is obliquely arranged on the material rack, and a stacking area is provided on one side of the chain transmission mechanism for stacking the pipes to be bent; the chain transmission mechanism is provided with a chain plate, and the chain plate is provided with a slot for receiving the pipes in the stacking area; the inclined plate is provided on one side of the upper end of the chain transmission mechanism and is obliquely arranged, and the limit piece is provided above the inclined plate and forms a guide groove for guiding single pipes to be arranged in sequence; the transfer mechanism is provided between the lifting mechanism and the straightening device, and is used to transfer the pipes at the bottom end of the guide groove to move to the straightening device.

[0013] Furthermore, the transfer mechanism includes multiple groups of lifting and moving components arranged in sequence, and the lifting and moving components include a support seat, a lifting cylinder, a lifting plate and a lifting plate; the support seat is arranged on one side of the base, the lifting cylinder is arranged on the bottom side of the support seat, the lifting plate is slidably arranged on one side of the support seat and connected to the lifting cylinder, the lifting plate is arranged on one side of the lifting plate for transverse movement, and support grooves are provided at both ends of the lifting plate; each of the lifting plates is connected to a translation drive mechanism, and the translation drive mechanism drives each of the lifting plates to move synchronously; the top side of the support seat is also provided with a groove for transitionally supporting the pipe.

[0014] Furthermore, the translation drive mechanism includes a motor, a transmission shaft and a second gear, the motor is arranged on one side of the lifting plate, and the transmission shaft is rotatably connected to each of the lifting plates; each of the lifting plates is provided with a second rack, each of the second racks is meshed with the second gear, and the second gear is connected to the transmission shaft.

[0015] Furthermore, the transfer robot includes a downward drive component, a belt conveyor component, a connecting plate and a plurality of clamps, the belt conveyor component is connected to the downward drive component, the downward drive component is connected to the connecting plate, and a plurality of clamps are arranged in sequence at the bottom end of the connecting plate.

[0016] The above one or more technical solutions in the tube double bending forming machine provided by the embodiment of the present invention have at least the following technical effects:

[0017] Because the mounting seat of the clamping mechanism is arranged on the base, the upper die is arranged on the bottom side of the mounting seat support part, the lower end of the mounting seat is provided with a lifting piece, the lower die is arranged on the lifting piece, and the top side of the upper die and the bottom side of the lower die are provided with clamping grooves for clamping and fixing the pipe to be bent to prevent the pipe from moving and affecting the bending effect. The two sets of bending mechanisms are symmetrically arranged on both sides of the clamping mechanism, so that the two sets of bending mechanisms bend the two ends of the pipe respectively, thereby improving the forming efficiency of pipe bending. The movable seat of the bending mechanism is provided with a rotatable rotating shaft, the rotating drive is connected to the rotating shaft, the rotating shaft is also provided with a roller and a connecting seat, the mounting portion of the connecting seat is provided with a clamping drive, the movable end of the clamping drive is provided with a pressure block, the pressure block is provided with a limit groove, the roller is provided with an annular groove, the clamping drive drives the pressure block to move upward to clamp the pipe in the annular groove, so that the annular groove and the limit groove form a bending clamping position, and then the rotating drive drives the rotating shaft to rotate, driving the connecting seat, the roller and the clamping drive to rotate together, so that the pressure block rotates around the rotation direction of the roller and keeps the pipe pressed in the annular groove, thereby realizing the bending of the pipe. Because the movable seat is connected to a translation drive, a guide rail is provided on the base, and the translation drive drives the movable seat to move along the guide rail, so that the bending mechanism moves close to the clamping mechanism, and the different positions of the pipe are bent and formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A three-dimensional diagram of a tube double-bending machine provided in an embodiment of the present invention.

[0020] Figure 2 A structural diagram of the clamping mechanism of the tube double-bending forming machine provided in an embodiment of the present invention.

[0021] Figure 3 A structural diagram of the bending mechanism of the tube double-bending forming machine provided in an embodiment of the present invention.

[0022] Figure 4 A structural diagram of a translational drive component of a bending mechanism of a tube double-bending forming machine provided in an embodiment of the present invention.

[0023] Figure 5 A partial structural diagram of the bending mechanism of the tube double-bending forming machine provided in an embodiment of the present invention.

[0024] Figure 6 Another stereoscopic view of the tube double-bending machine provided in an embodiment of the present invention.

[0025] Figure 7 The double bending forming machine for pipes provided in the embodiment of the present invention Figure 6 A is an enlarged view of the middle image.

[0026] Figure 8 A structural diagram of a lifting mechanism in a feeding device of a tube double-bending forming machine provided in an embodiment of the present invention.

[0027] Fig. 9 A structural diagram of a transfer mechanism in a feeding device of a tube double bending forming machine provided in an embodiment of the present invention.

[0028] Fig.10 A structural diagram of a lifting and moving assembly in a transfer mechanism of a tube double-bending machine provided in an embodiment of the present invention.

[0029] Fig.11 A structural diagram of a pushing mechanism in a straightening device of a tube double-bending machine provided in an embodiment of the present invention.

[0030] Fig.12 Another structural diagram of the pushing mechanism in the straightening device of the tube double bending forming machine provided in an embodiment of the present invention.

[0031] In the figure, 100, base, 110, guide rail;

[0032] 200, clamping mechanism, 210, mounting seat, 211, supporting portion, 220, upper die, 230, lifting member, 240, lower die, 250, clamping groove;

[0033] 300, bending mechanism, 310, moving seat, 320, translation driving member, 321, driving member, 322, third rack, 323, third gear, 330, rotating shaft, 340, rotating driving member, 341, first gear, 342, telescopic member, 343, first rack, 350, connecting seat, 351, mounting portion, 360, roller, 361, annular groove, 370, pressing block, 371, limiting groove, 372, fixing seat, 373, sliding block, 374, elastic member, 375, roller, 380, pressing driving member;

[0034] 400, straightening device, 410, pushing mechanism, 411, base, 412, pushing driving member, 413, fixed correction pressing block, 414, movable correction pressing block, 415, side plate, 416, correction groove, 417, supporting guide rod, 418, avoiding groove, 419, elastic rubber block, 420, supporting frame;

[0035] 500, transfer robot, 510, downward drive assembly, 520, belt conveyor assembly, 530, connecting plate, 540, clamping claw;

[0036] 600, feeding device, 610, lifting mechanism, 611, material rack, 612, chain transmission mechanism, 613, tilting plate, 614, limiting member, 615, chain plate, 616, card slot, 617, guide slot, 620, transfer mechanism, 621, lifting and moving assembly, 622, support seat, 623, lifting cylinder, 624, lifting plate, 625, lifting plate, 626, support slot, 627, groove, 628, second rack, 630, translation drive mechanism, 631, motor, 632, transmission shaft, 633, second gear;

[0037] 700. Pipes. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0039] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0041] In the embodiments of the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0042] In one embodiment of the double-bending forming machine for pipes of the present invention, please refer to Figures 1 to 12。The pipe double-bending forming machine includes a base 100, a pressing mechanism 200, and two bending mechanisms 300. The pressing mechanism 200 is arranged on the base 100. The pressing mechanism 200 includes a mounting seat 210, an upper die 220, a lifting member 230, and a lower die 240. The mounting seat 210 is arranged on the base 100. A supporting portion 211 extends from the upper end of the mounting seat 210. The upper die 220 is arranged on the bottom side of the supporting portion 211. The lifting member 210 is arranged at the lower end of the mounting seat 210. The lower die 240 is arranged on the lifting member 230. Clamping grooves 250 are provided on both the top side of the upper die 220 and the bottom side of the lower die 240 for clamping the pipe 700 to be bent. Two groups of bending mechanisms 300 are arranged on the base 100 and symmetrically located on both sides of the pressing mechanism 200. The bending mechanism 300 includes a moving seat 310, a translation driving member 320, a rotating shaft 330, a rotation driving member 340, a connecting seat 350, a roller 360, a pressing block 370, and a pressing driving member 380. A guide rail 110 is provided on the base 100. The moving seat 310 is slidably connected to the guide rail 110. The translation driving member 320 is connected to the moving seat 310 for driving the moving seat 310 to move along the guide rail 110. The rotating shaft 330 is rotatably connected to the moving seat 310. The rotation driving member 340 is connected to the rotating shaft 330 for driving the rotating shaft 330 to rotate. The roller 360 and the connecting seat 350 are arranged on the rotating shaft 330. An installation portion 351 is provided at one end of the connecting seat 350 away from the rotating shaft 330. The pressing driving member 380 is arranged on the installation portion 351. The pressing block 370 is arranged at the moving end of the pressing driving member 380. The roller 360 is provided with an annular groove 361, and the pressing block 370 is provided with a limiting groove 371. The annular groove 361 and the limiting groove 371 form a bending clamping position.

[0043] Specifically, since the mounting base 210 of the pressing mechanism is provided on the base 100, the upper die 220 is provided on the bottom side of the mounting base support portion 211. A lifting member 230 is provided at the lower end of the mounting base 210, and the lower die 240 is provided on the lifting member 230. Clamping grooves 250 are provided on the top side of the upper die 220 and the bottom side of the lower die 240 for clamping and fixing the pipe 700 to be bent, so as to prevent the pipe 700 from moving and affecting the bending effect. Two sets of bending mechanisms 300 are symmetrically provided on both sides of the pressing mechanism 200, so that the two sets of bending mechanisms 200 perform bending treatments on both ends of the pipe 700 respectively, improving the forming efficiency of the bending of the pipe 700. A rotatable rotating shaft 330 is provided on the moving seat 310 of the bending mechanism. The rotation driving member 340 is connected to the rotating shaft 330. A roller 360 and a connecting seat 350 are further provided on the rotating shaft 330. A pressing driving member 380 is provided on the mounting portion 351 of the connecting seat. A pressing block 370 is provided at the moving end of the pressing driving member 380. The pressing block 370 is provided with a limiting groove 371, and the roller 360 is provided with an annular groove 361. The pressing driving member 380 drives the pressing block 370 to move upward to clamp the pipe 700 in the annular groove 361, so that the annular groove 361 and the limiting groove 371 form a bending clamping position. Then, the rotation driving member 340 drives the rotating shaft 330 to rotate, driving the connecting seat 350, the roller 360 and the pressing driving member 380 to rotate together, so that the pressing block 370 rotates around the rotation direction of the roller 360 and keeps the pipe 700 clamped in the annular groove 361, thereby realizing the bending of the pipe. Since the moving seat 310 is connected to a translation driving member 320, and a guide rail 110 is provided on the base 100, the translation driving member 320 drives the moving seat 310 to move along the guide rail 110, so that the bending mechanism 300 moves close to the pressing mechanism 380 to perform bending forming on different positions of the pipe 700.

[0044] Among them, the translation driving member 320 includes a driving member 321, a third rack 322 and a third gear 323. The third rack 322 is provided on the base 100 and is parallel to the guide rail 110. The third rack 322 meshes with the third gear 323. The driving member 321 is connected to the moving seat 310 and the third gear 323 for driving the third gear 323 to rotate, so that the third gear 323 moves along the third rack 322, causing the moving seat 310 to move along the guide rail 110.

[0045] Further, the pressing block 370 includes a fixed seat 372, a slider 373 and an elastic member 374. The fixed seat 372 is connected to the pressing driving member 380. The slider 373 is slidably connected to the fixed seat 372. The limiting groove 371 is provided on the slider 373. The elastic member 374 connects the slider 373 and the fixed seat 372. When the bending mechanism 300 bends the pipe 700, the slider 373 overcomes the elastic force of the elastic member 374 and slides on the fixed seat 372. Specifically, when the rotating driving member 340 drives the rotating shaft 330 to rotate, the connecting seat 350, the pressing driving member 380 and the pressing block 370 are driven to rotate upward by 90°. Since the slider 373 is slidably connected to the fixed seat 372, during the rotation process, the slider 373 overcomes the elastic force of the elastic member 374 under the gravity and slides downward along the fixed seat 372. The slider 373 dynamically bends the pipe 700 around the rotating direction of the rotating shaft 330 to avoid direct bending and excessive pressure damage to the pipe.

[0046] Among them, a roller 375 is also provided in the fixed seat 372, and the bottom end of the slider 373 is slidably connected to the roller 375. The roller 375 reduces the friction between the slider 373 and the fixed seat 372, ensuring that the slider 373 slides on the fixed seat 372 when the pipe 700 is bent.

[0047] Further, the rotary drive member 340 includes a first gear 341, a telescopic member 342 and a first rack 343. The first gear 341 is sleeved on the rotary shaft 330. The telescopic member 342 is disposed in the movable seat 310. The first rack 343 is connected to the telescopic member 342 and meshed with the first gear 341. Specifically, the telescopic member 342 is connected to the first rack 343 to drive the first rack 343 to move, drive the first gear 341 meshed with the first rack 343 to rotate, and make the rotary shaft 330 rotate synchronously.

[0048] Furthermore, it also includes a straightening device 400 and a transfer robot 500. The straightening device 400 is arranged on the base 100 and is used to straighten the pipe 700. The straightening device 400 includes a plurality of pushing mechanisms 410 arranged on the base 100, and a spacing is provided between adjacent pushing mechanisms 410, and a support frame 420 is provided. The pushing mechanism 410 includes a base 411, a pushing driving member 412, a fixed correction pressing block 413 and a movable correction pressing block 414. The base 411 extends upward with two side plates 415. The fixed correction pressing block 413 is provided on the inner side of one side plate 415, the pushing driving member 412 is provided on the other side plate 415, and the movable correction pressing block 414 is provided on the pushing driving member 412. Correction grooves 416 are provided on the opposite sides of the movable correction pressing block 414 and the fixed correction pressing block 413. A support guide rod 417 is provided between the movable correction block 414 and the fixed correction block 413. The support guide rod 417 is used for the movable correction block 414 to guide and support the pipe 700. The transfer robot 500 is provided above the base 100 and is used to clamp the pipe 700 of the straightening device and transfer it to the clamping mechanism 200.

[0049] Specifically, there is a spacing between adjacent pushing mechanisms 410 and a support frame 420, and the support frame 420 can be used to support the pipe 700 to be bent. Since the opposite sides of the movable correction pressing block 414 and the fixed correction pressing block 413 are provided with a correction groove 416, and a support guide rod 417 is provided between them, the pushing driving member 412 is connected to the movable correction pressing block 414, and is used to drive the movable correction pressing block 414 to move along the support guide rod 417 to the fixed correction pressing block 413, and then position the pipe 700 in the correction groove 416, so that the pipe is straightened in the correction groove 416. Multiple groups of pushing mechanisms 410 position different positions of the pipe 700, straighten the pipe 700 as a whole, avoid errors caused by insufficient straightness of the pipe 700, and improve the bending accuracy. After the straightening of the tube 700 is completed, the push drive 412 moves the movable correction block 414 away from the fixed correction block 412 to release the tube 700, so that the tube 700 is supported on the support frame 420, and the transfer robot 500 arranged above the base 100 then clamps the tube 700 and transfers it to the clamping mechanism 200 for bending and forming.

[0050] Furthermore, a corresponding side of the movable correction pressing block 414 and the fixed correction pressing block 413 is provided with an escape groove 418 coaxial with the correction groove 416, the diameter of the escape groove 418 is larger than the diameter of the correction groove 416, and the correction groove 416 is distributed at both ends of the escape groove 418. An elastic rubber block 419 is also provided in the escape groove 418 of the movable correction pressing block, and the elastic rubber block 419 is located on the diameter of the correction groove 416. Specifically, because the diameter of the avoidance groove 418 is larger than the diameter of the correction groove 416, and the correction groove 416 is distributed at both ends of the avoidance groove 418, the avoidance groove 418 avoids the bending part of the main body of the air-avoiding pipe 700; the pushing driving member 412 drives the movable correction pressure block 414 to move to the fixed correction pressure block 413, and the correction groove 416 positions the pipe 700, so that the elastic rubber block 419 in the avoidance groove presses the pipe 700 to move to the avoidance groove of the fixed correction pressure block 413 to straighten the pipe in the avoidance groove 418.

[0051] Furthermore, a feeding device 600 is provided on one side of the base 100, and the feeding device 600 is used to transport the pipe 700 to the straightening device 400. Specifically, the automatic feeding, straightening, conveying and bending process of the pipe 700 is realized, and the precision and production efficiency of the pipe bending forming are improved.

[0052] Furthermore, the feeding device 600 includes a lifting mechanism 610 and a transfer mechanism 620. The lifting mechanism 610 includes a material rack 611, a chain transmission mechanism 612, an inclined plate 613 and a stopper 614. The chain transmission mechanism 612 is tiltedly arranged on the material rack 611, and a stacking area is provided on one side of the chain transmission mechanism 612 for stacking the pipes 700 to be bent. The chain transmission mechanism 612 is provided with a chain plate 615, and the chain plate 615 is provided with a slot 616 for receiving the pipes 700 in the stacking area. The inclined plate 613 is arranged on one side of the upper end of the chain transmission mechanism 612 and is tiltedly arranged. The stopper 614 is arranged above the inclined plate 613 and forms a guide groove 617 for guiding the single pipes to be arranged in sequence. The transfer mechanism 620 is arranged between the lifting mechanism 610 and the straightening device 400, and is used to transfer the pipes 700 at the bottom of the guide groove 617 to the straightening device 400. Specifically, the slots 616 of the chain plates 615 carry the pipes in the stacking area and then transport them through the chain transmission mechanism 612. Since an inclined plate 613 is provided on one side of the upper end of the chain transmission mechanism 612, a stopper 614 is provided above the inclined plate 613 and a guide groove 617 is formed, the pipes 700 transported by the chain transmission mechanism 612 are sequentially arranged on the inclined plate 613 and the guide groove 617. Then the transfer mechanism 620 moves the pipes 700 of the lifting mechanism to the straightening device 400 for straightening.

[0053] Further, the transfer mechanism 620 includes a plurality of lifting and moving components 621 arranged in sequence, and the lifting and moving components 621 include a support seat 622, a lifting cylinder 623, a lifting plate 624 and a lifting plate 625. The support seat 626 is arranged on one side of the base 100, the lifting cylinder 623 is arranged on the bottom side of the support seat 622, the lifting plate 624 is slidably arranged on one side of the support seat 622 and connected to the lifting cylinder 623, the lifting plate 625 is arranged on one side of the lifting plate 624 for transverse movement, and support grooves 626 are arranged at both ends of the lifting plate 625. Each lifting plate 625 is connected to a translation driving mechanism 630, and the translation driving mechanism 630 drives each lifting plate 625 to move synchronously. A groove 627 is also arranged on the top side of the support seat 622 for transition support of the pipe 700. Specifically, the lifting cylinder 623 lifts the lifting plate 624, so that the two support grooves 626 of the lifting plate 625 simultaneously lift the pipe located in the groove 627 of the support seat and the pipe located in the guide groove 617 of the feeding mechanism, and the translation drive mechanism 630 then drives the lifting plate 625 to move, so that one pipe moves to the straightening device 400 and the other pipe moves to the groove 627 on the support seat. The transfer mechanism 620 moves the two pipes at the same time, reducing the moving time of the pipe 700 and improving efficiency.

[0054] Furthermore, the translation drive mechanism 630 includes a motor 631, a transmission shaft 632 and a second gear 633. The motor 631 is disposed on one side of a lifting plate 624, and the transmission shaft 632 is rotatably connected to each lifting plate 624. Each lifting plate 625 is provided with a second rack 628, and each second rack 628 is meshed with a second gear 633, and the second gear 633 is connected to the transmission shaft 632. Specifically, since the transmission shaft 632 is rotatably connected to each lifting plate 624, the second gear 633 is connected to the transmission shaft 632, and the motor 631 drives the transmission shaft 632 to rotate, driving the second gear 633 to rotate, so that the second rack 628 meshed with the second gear 633 moves, and each lifting plate 625 moves synchronously to transport the pipe 700.

[0055] Further, the transfer robot 500 includes a downward drive assembly 510, a belt conveyor assembly 520, a connecting plate 530 and a plurality of clamps 540. The belt conveyor assembly 520 is connected to the downward drive assembly 510, the downward drive assembly 510 is connected to the connecting plate 530, and a plurality of clamps 540 are arranged in sequence at the bottom of the connecting plate 530. Specifically, the downward drive assembly 510 drives the connecting plate 530 and the clamps 540 to move downward to clamp the straightened pipe 700 and then move upward, and the belt conveyor assembly 520 drives the downward drive assembly 510 and the clamps 540 to move to the clamping mechanism 200, so that the clamping mechanism 200 clamps the pipe 700.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-bending tube forming machine, characterized in that: The invention comprises a base, a clamping mechanism and two bending mechanisms; the clamping mechanism is arranged on the base, the clamping mechanism comprises a mounting seat, an upper die, a lifting member and a lower die, the mounting seat is arranged on the base, a supporting portion is extended from the upper end of the mounting seat, the upper die is arranged on the bottom side of the supporting portion, the lifting member is arranged on the lower end of the mounting seat, the lower die is arranged on the lifting member, and a clamping groove is provided on the top side of the upper die and the bottom side of the lower die for clamping the pipe to be bent; two groups of bending mechanisms are arranged on the base and are symmetrically located on both sides of the clamping mechanism; the bending mechanism comprises a moving seat, a translation driving member, a rotating shaft, a rotating driving member, a connecting seat, a roller, A pressure block and a clamping driving member; a guide rail is provided on the base, the movable seat is slidably connected to the guide rail, and the translation driving member is connected to the movable seat for driving the movable seat to move along the guide rail; the rotating shaft is rotatably connected to the movable seat, and the rotating driving member is connected to the rotating shaft for driving the rotating shaft to rotate; the roller and the connecting seat are arranged on the rotating shaft, and a mounting portion is provided at one end of the connecting seat away from the rotating shaft, the clamping driving member is arranged on the mounting portion, and the pressure block is arranged at the moving end of the clamping driving member; the roller is provided with an annular groove, and the pressure block is provided with a limiting groove, and the annular groove and the limiting groove form a bending clamping position.

2. The double-bending tube forming machine according to claim 1, characterized in that: The pressing block includes a fixed seat, a slider and an elastic member, the fixed seat is connected to the clamping drive member, the slider is slidably connected to the fixed seat, the limiting groove is arranged on the slider, the elastic member connects the slider and the fixed seat, and when the bending mechanism bends the tube, the slider overcomes the elastic force of the elastic member and slides on the fixed seat.

3. The double-bending tube forming machine according to claim 1, characterized in that: The rotary driving member includes a first gear, a telescopic member and a first rack. The first gear is sleeved on the rotating shaft. The telescopic member is arranged in the moving seat. The first rack is connected to the telescopic member and meshes with the first gear.

4. The tube double bending machine according to any one of claims 1 to 3, characterized in that: It also includes a straightening device and a transfer robot, the straightening device is arranged on the base and is used to straighten the pipe; the straightening device includes a plurality of pushing mechanisms arranged on the base, adjacent pushing mechanisms are provided with a spacing and a support frame; the pushing mechanism includes a base, a pushing drive, a fixed correction block and a movable correction block; the base has two side plates extending upward, the fixed correction block is arranged on the inner side of one of the side plates, the pushing drive is arranged on the other side plate, the movable correction block is arranged on the pushing drive, and correction grooves are provided on the opposite sides of the movable correction block and the fixed correction block; a support guide rod is also provided between the movable correction block and the fixed correction block, and the support guide rod is used for the movable correction block to guide and support the pipe; the transfer robot is arranged above the base, and is used to clamp the pipe of the straightening device and transfer it to the clamping mechanism.

5. The double-bending tube forming machine according to claim 4, characterized in that: The corresponding sides of the movable correction pressure block and the fixed correction pressure block are also provided with avoidance grooves coaxial with the correction groove, the diameter of the avoidance groove is larger than the diameter of the correction groove, and the correction grooves are distributed at both ends of the avoidance groove; the avoidance groove of the movable correction pressure block is also provided with an elastic rubber block, and the elastic rubber block is located on the diameter of the correction groove.

6. The double-bending tube forming machine according to claim 4, characterized in that: It also includes a feeding device, which is arranged on one side of the base, and the feeding device is used to transport the pipe to the straightening device.

7. The double-bending tube forming machine according to claim 6, characterized in that: The feeding device includes a lifting mechanism and a transfer mechanism; the lifting mechanism includes a material rack, a chain transmission mechanism, an inclined plate and a limit piece; the chain transmission mechanism is obliquely arranged on the material rack, and a stacking area is provided on one side of the chain transmission mechanism for stacking the pipes to be bent; the chain transmission mechanism is provided with a chain plate, and the chain plate is provided with a slot for receiving the pipes in the stacking area; the inclined plate is provided on one side of the upper end of the chain transmission mechanism and is obliquely arranged, and the limit piece is provided above the inclined plate and forms a guide groove for guiding single pipes to be arranged in sequence; the transfer mechanism is provided between the lifting mechanism and the straightening device, and is used to transfer the pipes at the bottom end of the guide groove to move to the straightening device.

8. The double-bending tube forming machine according to claim 7, characterized in that: The transfer mechanism includes multiple groups of lifting and moving components arranged in sequence, and the lifting and moving components include a support seat, a lifting cylinder, a lifting plate and a lifting plate; the support seat is arranged on one side of the base, the lifting cylinder is arranged on the bottom side of the support seat, the lifting plate is slidably arranged on one side of the support seat and connected to the lifting cylinder, the lifting plate is arranged on one side of the lifting plate for transverse movement, and support grooves are provided at both ends of the lifting plate; each lifting plate is connected to a translation drive mechanism, and the translation drive mechanism drives each lifting plate to move synchronously; the top side of the support seat is also provided with a groove for transitionally supporting the pipe.

9. The double-bending tube forming machine according to claim 8, characterized in that: The translation drive mechanism includes a motor, a transmission shaft and a second gear. The motor is arranged on one side of the lifting plate, and the transmission shaft is rotatably connected to each lifting plate. Each lifting plate is provided with a second rack, and each second rack is meshed with the second gear, and the second gear is connected to the transmission shaft.

10. The double-bending tube forming machine according to claim 4, characterized in that: The transfer robot includes a downward drive component, a belt conveyor component, a connecting plate and a plurality of clamps, wherein the belt conveyor component is connected to the downward drive component, the downward drive component is connected to the connecting plate, and a plurality of clamps are arranged in sequence at the bottom end of the connecting plate.

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