Novel tension straightening equipment

Abstract

The invention discloses novel tension straightening equipment, and relates to the field of tension straightening. The novel tension straightening equipment comprises a straightening table, stretching and fixing units installed at the two ends of the top of the straightening table, and an auxiliary straightening unit installed between the two stretching and fixing units. According to the novel tension straightening equipment, the auxiliary straightening unit is arranged, an upper roller and a lower roller can conduct staggered rolling in the tension straightening process, so that the stress deformation part of a workpiece is rapidly straightened, then the upper roller and the lower roller conduct alignment rolling, the whole rolling base is driven to rotate through a rotating air cylinder, and the workpiece is straightened. Therefore, the rolling angles of the upper roller, the lower roller and the workpiece are changed, the problems of stress deformation and uneven thickness in different directions are solved, straightening can be faster during follow-up tension straightening, meanwhile, the clamping area is changed through the variable contact piece, and the situation that the workpiece is damaged due to the fact that clamping downward pressure is too large is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of tension straightening, in particular to a novel tension straightening device. Background Art

[0002] Tension straightening is a special straightening technology. The difference between it and traditional straightening equipment is that it mainly relies on the chucks at both ends of the straightening machine. One set of chucks fixes the workpiece, and the other set of chucks stretches the workpiece. The tension generated during stretching changes the stress inside the workpiece, thereby achieving the straightening effect. It is mainly used for processing plate workpieces. Compared with traditional roller straightening machines, it has better stress elimination effect.

[0003] However, the existing tension straightening machine only relies on pulling at both ends for tension straightening. On the one hand, the contact surface with the workpiece is constant during the stretching process. When the plate is thicker, in order to avoid slipping, the clamping part needs to provide greater pressure to ensure a secure clamping, which will cause the clamping part to deform, affecting the output rate of finished products. At the same time, if there is a difference in thickness of the plate or the stress deformation is severe in some parts of the workpiece, due to the complex internal stress direction and the large stress in some parts, during actual straightening, excessive tension will cause the thinner part to be stretched and deformed more severely, which is prone to the risk of breakage. Small tension will require a longer straightening time. For this purpose, a new type of tension straightening equipment is specially provided. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a new type of tension straightening equipment, which solves the problems of unreasonable clamping part design of the existing tension straightening machine during tensile straightening, and the problem of easy breakage and long stretching time when relying solely on tensile straightening.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a novel tension straightening device, comprising a straightening table and stretching and fixing units installed at both ends of the top of the straightening table, and an auxiliary straightening unit installed between the two sets of stretching and fixing units, wherein the stretching and fixing units include a clamping seat slidably arranged on the straightening table, a fixing fixture is provided in the clamping seat, and a variable contact member is installed on the inner bottom of the fixing fixture, and the clamping contact area of the fixing fixture is changed by the variable contact member; torsion members are provided on both sides of the clamping seat, and the two ends of the fixing fixture are driven to rise and fall by the torsion members, so as to twist the workpiece during tension stretching;

[0006] The auxiliary straightening unit includes a sliding support and a roller pressing seat slidably arranged on the straightening table, wherein the roller pressing seat is provided with a directional roller pressing member and a direction-changing roller pressing member, and the direction-changing roller pressing member can be selectively arranged on the top or one side of the directional roller pressing member;

[0007] The direction-changing rolling member is located on top of the directional rolling member and is used for relative rolling so that the workpiece is squeezed;

[0008] The direction-changing rolling member is located on one side of the directional rolling member and is used for staggered rolling to bend the workpiece;

[0009] The rolling seat is rotatably arranged on the sliding support so that the directional rolling member and the direction-changing rolling member can roll the workpiece at different angles.

[0010] Preferably, the fixing fixture includes a jacket and an upper pressure plate movably arranged on the top of the jacket, a downward pressure cylinder is fixedly arranged on the top of the jacket, the output end of the downward pressure cylinder movably penetrates into the interior of the jacket and is fixedly connected to the upper pressure plate, a positioning shaft is fixedly arranged on the top of the upper pressure plate, and the positioning shaft movably penetrates the top wall of the jacket, and the variable contact piece is arranged in the inner bottom of the jacket.

[0011] Preferably, a receiving groove is provided at the bottom of the jacket, and the variable contact member comprises:

[0012] A plurality of lower clamping strips are arranged in the jacket;

[0013] A sliding drive bar is slidably arranged at the bottom of the plurality of lower clamping bars and is perpendicular to the lower clamping bars;

[0014] The receiving groove is formed at the bottom of the lower clamping strip, and the width of the receiving grooves at the bottom of the plurality of lower clamping strips is increased;

[0015] A wedge-shaped top block is integrally formed on the top of the sliding drive bar, and multiple wedge-shaped top blocks are respectively arranged in multiple receiving grooves, so that the sliding drive bar can sequentially push up the multiple lower clamping bars when sliding;

[0016] The lifting cylinder is fixedly arranged at the bottom of the jacket and is transmission-connected to the sliding drive bar.

[0017] Preferably, a receiving groove is provided in the jacket, the lower clamping bar is vertically slidably arranged in the receiving groove, a sliding groove perpendicular to the receiving groove is provided at the bottom of the jacket, and the sliding groove is connected to the inside of the receiving groove, the sliding drive bar is slidably connected in the sliding groove, and a connecting bar is fixedly connected between the plurality of sliding drive bars and the output end of the lifting cylinder.

[0018] Preferably, the torsion member includes a fixing frame fixedly assembled on both sides of the top of the jacket, a deformable rubber pad is installed between the fixing frame and the jacket, and both the deformable rubber pad and the jacket are provided with assembly slots, a rotating shaft is rotatably provided on the top of the fixing frame, and a torsion cylinder is installed on the top of the rotating shaft.

[0019] Preferably, a cover plate is fixedly provided on the top of the clamping seat, the torsion cylinder is fixedly assembled in the cover plate, a vertical positioning groove is provided on the inner side wall of the clamping seat, the end of the rotating shaft is slidably provided in the vertical positioning groove, and rotating ears are fixedly provided on both sides of the middle part of the jacket, and the rotating ears are rotatably connected to the inner side wall of the clamping seat, and a material feed trough is provided on both sides of the clamping seat.

[0020] Preferably, the directional rolling member includes a lower roller, and an upper pull cylinder is fixedly provided on both sides of the sliding support, and both ends of the lower roller are rotatably connected to the output ends of the upper pull cylinder;

[0021] The direction-changing roller pressure member includes an upper roller, and carrier plates are slidably provided on both sides of the top of the sliding support, and a lower top cylinder is fixedly provided on the carrier plate. The two ends of the upper roller are rotatably connected to the output end of the lower top cylinder, and the top cover of the sliding support is fixedly provided with a direction-changing cylinder, and a synchronization bar is fixedly provided between the output end of the direction-changing cylinder and the two groups of carrier plates.

[0022] Preferably, a rotating cylinder is fixedly provided at the bottom of the sliding support, the output end of the rotating cylinder is fixedly connected to the roller pressing seat, and support shafts are rotatably provided at the openings on both sides of the sliding support;

[0023] Both sides of the sliding support are provided with linear grooves, one side of the linear groove is provided with an L-shaped groove connected thereto, the L-shaped groove and the linear groove are combined to form an n-shaped groove, the lower roller is slidingly arranged in the linear groove, and the direction-changing roller pressure piece is slidingly arranged in the n-shaped groove.

[0024] Preferably, slide rails are fixedly provided on both sides of the top of the straightening table, the clamping seat and the sliding support are slidably provided on the slide rails, a sunken groove is provided on the inner top of the straightening table, a linear motor is fixedly provided in the sunken groove, the sliding support is fixedly assembled with the mover of the linear motor, servo cylinders are fixedly provided on both sides of the sunken groove, and two groups of servo cylinders are fixedly connected to two groups of clamping seats respectively.

[0025] Preferably, a PLC control machine is fixedly provided on the straightening table, a positioning support frame is fixedly provided on the feeding end of the straightening table, and a bracket is fixedly provided on the discharging end of the straightening table.

[0026] The present invention discloses a novel tension straightening device, which has the following beneficial effects:

[0027] 1. This new tension straightening equipment is equipped with an auxiliary straightening unit. During tension straightening, after the workpiece is clamped by two sets of fixed clamps, the upper and lower rollers are first used for offset rolling, thereby achieving rapid straightening of the stress and deformation parts of the workpiece. Then, the upper and lower rollers are used for counter-rolling, so that the overall thickness of the workpiece tends to be uniform, avoiding breakage during subsequent tension straightening. At the same time, during the above process, the entire roller pressing seat is driven to rotate by the rotating cylinder, thereby changing the rolling angle of the upper and lower rollers and the workpiece, eliminating stress deformation and uneven thickness problems in different directions, so that subsequent tension straightening can be performed more quickly.

[0028] 2. This new tension straightening equipment sets a variable contact piece in the fixed fixture, starts the lifting cylinder, causes the output end of the lifting cylinder to contract, and pulls multiple sliding drive bars along the slide groove through the connecting bar. At this time, the wedge-shaped top block at the front end of the sliding drive bar moves along the receiving groove to lift the first group of lower clamping bars upward. At this time, if the sliding drive bar continues to move, the second group of wedge-shaped top blocks will lift the second group of lower clamping bars. The number of lifted lower clamping bars is selected according to demand, thereby changing the total clamping area with the bottom of the workpiece and increasing the static friction. This replaces the traditional clamp that changes the static friction by increasing the downward pressure, avoids deep indentations on the workpiece due to excessive downward pressure during the clamping process, and can also avoid clamping breakage during thin plate processing.

[0029] 3. During the tension straightening process, this new type of tension straightening equipment sets torsion pieces at both ends of the fixed clamps. While maintaining tight tension between the two sets of fixed clamps, it twists both sides of the workpiece and uses the torsional force to relax the internal stress of the workpiece, further accelerating the stress elimination. At the same time, compared with simple single-direction stretching tension straightening, it can eliminate stress in more directions.

[0030] 4. After the stress is eliminated, the new tension straightening equipment uses the servo cylinders at both ends to pull the clamping parts at both ends of the workpiece into the roller press seat, squeezes the clamping marks on the workpiece through the upper and lower rollers in the roller press seat, and then pulls the workpiece, thereby achieving the purpose of eliminating the clamping marks on the workpiece and reducing material waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0032] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0033] Figure 2 This is a schematic structural diagram of the stretching and fixing unit of the present invention;

[0034] Figure 3 This is a schematic diagram of the overall back structure of the present invention;

[0035] Figure 4 This is an exploded view of the outer surface structure of the jacket of the present invention;

[0036] Figure 5 This is a cross-sectional view of the bottom structure of the jacket of the present invention;

[0037] Figure 6 This is a cross-sectional view of the inner side wall structure of the jacket of the present invention;

[0038] Figure 7 This is a schematic structural diagram of the auxiliary straightening unit of the present invention;

[0039] Figure 8 This is a schematic diagram of the side structure of the auxiliary straightening unit of the present invention;

[0040] Figure 9 This is a schematic diagram of the top structure of the straightening table of the present invention;

[0041] Figure 10 Schematic diagram of the staggered rolling of the upper and lower rollers of the present invention;

[0042] Figure 11 Schematic diagram of the upper roller and the lower roller in the present invention;

[0043] Figure 12 It is a schematic diagram of the turning rolling of the upper roller and the lower roller of the present invention.

[0044] In the figure: 1, straightening table; 12, PLC control machine; 13, positioning support frame; 14, bracket; 15, sinking groove; 16, slide rail; 17, linear motor; 18, servo cylinder;

[0045] 2. Tensile fixing unit; 21. Clamping seat; 22. Cover plate; 23. Feed chute; 24. Fixing fixture; 241. Jacket; 242. Variable contact member; 2421. Lower clamping strip; 2422. Sliding drive strip; 2423. Connecting strip; 2424. Lifting cylinder; 2425. Receiving groove; 2426. Wedge-shaped ejector block; 243. Upper pressure plate; 244. Lower pressure cylinder; 245. Positioning shaft; 246. Torsion member; 2461. Fixing bracket; 2462. Rotating shaft; 2463. Deformable rubber pad; 2464. Assembly notch; 2465. Torsion cylinder; 247. Rotating lifting lug; 248. Slide; 249. Storage groove; 25. Vertical positioning groove;

[0046] 3. Auxiliary straightening unit; 31. Sliding support; 32. Rolling seat; 33. Rotating cylinder; 34. Directional rolling member; 341. Lower roller; 342. Pull-up cylinder; 35. Direction-changing rolling member; 351. Upper roller; 352. Lower push cylinder; 353. Carrying plate; 354. Synchronizing bar; 355. Direction-changing cylinder; 36. Linear groove; 37. L-shaped groove; 38. Support shaft. DETAILED DESCRIPTION

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0048] The embodiments of the present application provide a new type of tension straightening equipment to solve the problems of unreasonable clamping part design of existing tension straightening machines during tension straightening, and the problems of easy breakage and long stretching time when relying solely on tension straightening.

[0049] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0050] The embodiment of the present invention discloses a novel tension straightening device.

[0051] According to the attached Figure 1-12 As shown, it includes a straightening table 1 and stretching and fixing units 2 installed at both ends of the top of the straightening table 1, and an auxiliary straightening unit 3 installed between the two groups of stretching and fixing units 2. The stretching and fixing unit 2 includes a clamping seat 21 slidably set on the straightening table 1, and a fixing fixture 24 is provided in the clamping seat 21. The inner bottom of the fixing fixture 24 is installed with a variable contact member 242, and the clamping contact area of the fixing fixture 24 is changed by the variable contact member 242; torsion members 246 are provided on both sides of the clamping seat 21, and the two ends of the fixing fixture 24 are driven to rise and fall by the torsion members 246, so as to twist the workpiece during tension stretching;

[0052] The auxiliary straightening unit 3 includes a sliding support 31 and a roller pressing seat 32 which are slidably arranged on the straightening table 1. The roller pressing seat 32 is provided with a directional roller pressing member 34 and a direction-changing roller pressing member 35. The direction-changing roller pressing member 35 can be selectively arranged on the top or one side of the directional roller pressing member 34.

[0053] The direction-changing rolling member 35 is located on top of the directional rolling member 34 and is used for relative rolling so that the workpiece is squeezed;

[0054] The direction-changing rolling member 35 is located on one side of the directional rolling member 34 and is used for offset rolling so that the workpiece is bent;

[0055] The rolling seat 32 is rotatably arranged on the sliding support 31 so that the directional rolling member 34 and the direction-changing rolling member 35 can roll the workpiece at different angles.

[0056] The fixing fixture 24 includes a sleeve 241 and an upper pressure plate 243 movably arranged at the top of the sleeve 241. A downward pressure cylinder 244 is fixedly arranged on the top of the sleeve 241. The output end of the downward pressure cylinder 244 movably penetrates into the interior of the sleeve 241 and is fixedly connected to the upper pressure plate 243. A positioning shaft 245 is fixedly arranged on the top of the upper pressure plate 243, and the positioning shaft 245 movably penetrates the top wall of the sleeve 241. The variable contact member 242 is arranged in the inner bottom of the sleeve 241.

[0057] The bottom of the jacket 241 is provided with a receiving groove 249, and the variable contact member 242 includes a plurality of lower clamping bars 2421, a sliding drive bar 2422, a lifting cylinder 2424, a receiving groove 2425 and a wedge-shaped top block 2426. The plurality of lower clamping bars 2421 are arranged in the jacket 241; the sliding drive bar 2422 is slidably arranged at the bottom of the plurality of lower clamping bars 2421, and is perpendicular to the lower clamping bars 2421; the receiving groove 2425 is opened at the bottom of the lower clamping bar 2421, and The width of the grooves 2425 at the bottom of the multiple lower clamping strips 2421 is increasing; the wedge-shaped top blocks 2426 are integrally formed at the top of the sliding drive strip 2422, and the multiple wedge-shaped top blocks 2426 are respectively arranged in the multiple grooves 2425, so that when the sliding drive strip 2422 slides, the multiple lower clamping strips 2421 can be lifted upward in sequence; the lifting cylinder 2424 is fixedly set at the bottom of the jacket 241, and the lifting cylinder 2424 is transmission-connected to the sliding drive strip 2422.

[0058] A receiving groove 249 is provided in the jacket 241, and the lower clamping bar 2421 is vertically slidably set in the receiving groove 249. A sliding groove 248 perpendicular to the receiving groove 249 is provided at the bottom of the jacket 241, and the sliding groove 248 is connected to the inside of the receiving groove 249. The sliding drive bar 2422 is slidably connected in the sliding groove 248, and a connecting bar 2423 is fixedly connected between the multiple sliding drive bars 2422 and the output end of the lifting cylinder 2424.

[0059] The torsion member 246 includes a fixing frame 2461 fixedly assembled on both sides of the top of the sleeve 241, and a deformable rubber pad 2463 is installed between the fixing frame 2461 and the sleeve 241, and an assembly slot 2464 is provided on the deformable rubber pad 2463 and the sleeve 241. A rotating shaft 2462 is rotatably provided on the top of the fixing frame 2461, and a torsion cylinder 2465 is installed on the top of the rotating shaft 2462. The torsion cylinder 2465 at both ends of the two sets of clamping seats 21 repeatedly extends and retracts, driving the rotating shafts 2462 on both sides to move up and down along the vertical positioning slots 25 respectively, thereby causing the entire sleeve 241 to twist, thereby twisting the workpiece in the stretched and straightened state forward and backward, thereby further releasing and eliminating the internal stress of the metal, and can eliminate certain torsional stress and stress in other directions. In this process, the bolts used for fixing the fixing frame 2461 with the sleeve 241 are twisted in the assembly slot 2464, causing the deformable rubber pad 2463 to deform.

[0060] A cover plate 22 is fixedly provided on the top of the clamping seat 21, and the torsion cylinder 2465 is fixedly assembled in the cover plate 22. A vertical positioning groove 25 is provided on the inner wall of the clamping seat 21, and the end of the rotating shaft 2462 is slidably provided in the vertical positioning groove 25. Rotating ears 247 are fixedly provided on both sides of the middle part of the jacket 241, and the rotating ears 247 are rotatably connected to the inner wall of the clamping seat 21. A material trough 23 is provided on both sides of the clamping seat 21.

[0061] The directional rolling member 34 includes a lower roller 341. An upper pull cylinder 342 is fixedly installed on both sides of the sliding support 31. The two ends of the lower roller 341 are rotatably connected to the output end of the upper pull cylinder 342. A pressure sensor is installed between the output end of the upper pull cylinder 342 and the lower roller 341 to monitor the pressure value during rolling.

[0062] The direction-changing rolling member 35 includes an upper roller 351, and carrier plates 353 are slidingly provided on both sides of the top of the sliding support 31. A lower top cylinder 352 is fixedly provided on the carrier plate 353. The two ends of the upper roller 351 are rotatably connected to the output end of the lower top cylinder 352. The top cover of the sliding support 31 is fixedly provided with a direction-changing cylinder 355. A synchronization bar 354 is fixedly provided between the output end of the direction-changing cylinder 355 and the two groups of carrier plates 353. A pressure sensor is installed between the output end of the lower top cylinder 352 and the upper roller 351 for monitoring the pressure value during rolling.

[0063] A rotating cylinder 33 is fixedly provided at the bottom of the sliding support 31, and the output end of the rotating cylinder 33 is fixedly connected to the roller pressing seat 32. Support shafts 38 are rotatably provided at the openings on both sides of the sliding support 31 to support the workpiece when the workpiece enters and exits the roller pressing seat 32;

[0064] A linear groove 36 is provided on both sides of the sliding support 31, and an L-shaped groove 37 connected to the linear groove 36 is provided on one side of the linear groove. The L-shaped groove 37 and the linear groove 36 are combined to form an n-shaped groove. The lower roller 341 is slidably set in the linear groove 36, and the direction-changing roller pressure piece 35 is slidably set in the n-shaped groove.

[0065] Slide rails 16 are fixedly provided on both sides of the top of the straightening table 1, and the clamping seat 21 and the sliding support 31 are slidably provided on the slide rails 16. A sunken groove 15 is opened on the inner top of the straightening table 1, and a linear motor 17 is fixedly provided in the sunken groove 15. The sliding support 31 is fixedly assembled with the mover of the linear motor 17. Servo cylinders 18 are fixedly provided on both sides of the sunken groove 15. Two groups of servo cylinders 18 are fixedly connected to the two groups of clamping seats 21 respectively. A tension sensor is installed between the output end of the servo cylinder 18 and the clamping seat 21 to monitor the tension of the workpiece during tension straightening and stretching.

[0066] A PLC control machine 12 is fixedly provided on the straightening platform 1 , a positioning support frame 13 is fixedly provided at the feeding end of the straightening platform 1 , and a bracket 14 is fixedly provided at the discharging end of the straightening platform 1 .

[0067] Working principle: When the device is in use, the material is passed from the feeding end of the straightening table 1 into the positioning support frame 13, then through the inside of the jacket 241 on one side, then through the inside of the roller press seat 32, and finally through the jacket 241 on the other side. At this time, the PLC control machine 12 controls the entire device to start;

[0068] First, the clamping is adjusted according to the thickness of the workpiece. By setting the gradient threshold, the size of the clamping surface of the fixed clamp 24 and the workpiece is adjusted according to the thickness of the plate. At this time, the lifting cylinder 2424 is started to shrink the output end of the lifting cylinder 2424, and the multiple sliding drive strips 2422 are pulled along the slide groove 248 through the connecting strip 2423. At this time, the wedge-shaped top block 2426 at the front end of the sliding drive strip 2422 moves along the receiving groove 2425, pushing the first group of lower clamping strips 2421 upward. At this time, if the sliding drive strip If 2422 continues to move, the second set of wedge-shaped top blocks 2426 will lift the second set of lower clamping strips 2421, so that the number of lower clamping strips 2421 to be lifted can be selected according to the needs, thereby changing the total clamping area with the bottom of the workpiece. Then, the downward pressure cylinder 244 is started, so that its output end drives the upper pressure plate 243 to move downward, so that the upper pressure plate 243 and the lower clamping strips 2421 complete the clamping of the workpiece. In this way, the static friction force is increased by increasing the clamping contact surface to a certain extent, thereby avoiding the workpiece being damaged during clamping due to the clamping surface being too small.

[0069] At this time, both ends of the workpiece are clamped and fixed, and enter the pre-straightening stage. In this stage, the upper roller 351 and the lower roller 341 are in a staggered state. At this time, by starting the upper pulling cylinder 342 and the lower pushing cylinder 352, the upper roller 351 and the lower roller 341 are moved relative to each other, and the areas of the workpiece with large stress and deformation are pre-rolled and straightened by staggered rolling, so that local large stress is quickly eliminated. During the staggered rolling, by starting the rotating cylinder 33, the rotating cylinder 33 drives the rolling seat 32 to rotate, so that the angle between the workpiece and the upper roller 351 and the lower roller 341 is adjusted, so that within a certain range, stress and deformation in different directions can be straightened, and finally the workpiece is roughly horizontal.

[0070] Then, by controlling the contraction of the lower top cylinder 352, the upper roller 351 moves to the top of the n-shaped groove, and then the direction-changing cylinder 355 extends, driving the carrier plate 353 to move, so that the upper roller 351 moves to the inside of the linear groove 36. At this time, the upper roller 351 and the lower roller 341 are opposite to each other. At this time, by starting the lower top cylinder 352, the upper roller 351 and the lower roller 341 clamp the surface of the workpiece, and at the same time start the linear motor 17, so that the mover of the linear motor 17 drives the entire rolling seat 32 to move back and forth between the two groups of clamping seats 21, and in this process, by starting a group of servo cylinders 18, a group of clamping seats 21 moves away from the middle and maintains a constant traction tension, so that the entire workpiece remains taut. At this time, the upper roller 351 and the lower roller 341 roll back and forth, so that the overall thickness of the workpiece tends to be uniform, thereby preparing for the subsequent stretching and straightening, and avoiding the uneven thickness from breaking during stretching;

[0071] After completing the above operations, the whole enters the formal straightening state. At this time, the upper pulling cylinder 342 and the lower pushing cylinder 352 are started, so that the height difference between the upper roller 351 and the lower roller 341 is at the maximum state. At this time, one group of clamping seats 21 remains stationary, and the other group of clamping seats 21 is stretched by the servo cylinder 18; and in the early stage of stretching, the torsion cylinders 2465 at both ends of the two groups of clamping seats 21 repeatedly extend and retract, driving the rotating shafts 2462 on both sides to move up and down along the vertical positioning grooves 25 respectively, so that the entire jacket 241 is twisted, thereby twisting the workpiece in the stretched and straightened state forward and backward, thereby further releasing and eliminating the internal stress of the metal, and being able to eliminate certain torsional stress and stress in other directions; then the torsion cylinder 2465 stops, and the jackets 241 at both ends remain horizontal. At this time, by slowly increasing the pulling force value of the servo cylinder 18, the final tension stretching straightening is performed, and finally the internal stress of the workpiece is completely released and becomes a horizontal sheet material;

[0072] At this time, the tension straightening of the workpiece has been completed, and then the fixed clamp 24 at the unloading end is released, and then the servo cylinder 18 at the loading end pulls the clamping seat 21 at the loading end to move in the opposite direction, so that the clamped part of the workpiece at the discharge end is pulled between the upper roller 351 and the lower roller 341, and the upper roller 351 and the lower roller 341 are used to slightly roll the workpiece to eliminate the slight deformation caused by the clamping of the workpiece end, and then the servo cylinder 18 at the loading end pushes the workpiece to move to the inside of the clamping seat 21 at the unloading end, and then the clamping seat 21 at the unloading end clamps the workpiece, the fixed clamp 24 at the loading end is released, and the workpiece is clamped by the clamping seat 21 at the unloading end and moved to the unloading end, at this time, the upper roller 351 and the lower roller 341 are used to roll the deformed part of the other end of the workpiece until it is flat, and finally the fixed clamp 24 at the unloading end clamps the workpiece, and the straightened workpiece is pushed to the bracket 14 to complete the straightening.

[0073] When in use, the device can straighten independent plate-like workpieces of fixed length one by one, and can also straighten continuous metal coils continuously. By installing a laser cutting machine at the bracket 14, the continuous metal coils can be processed into multiple independent plate-like flat workpieces.

[0074] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel tension straightening device, comprising a straightening platform (1), a stretching fixing unit (2) mounted on both ends of the top of the straightening platform (1), and an auxiliary straightening unit (3) mounted between the two sets of stretching fixing units (2), characterized in that: The stretching and fixing unit (2) comprises a clamping seat (21) slidably arranged on the straightening table (1); a fixing clamp (24) is arranged in the clamping seat (21); a variable contact piece (242) is installed on the inner bottom of the fixing clamp (24); and the clamping contact area of the fixing clamp (24) is changed by the variable contact piece (242); twisting pieces (246) are arranged on both sides of the clamping seat (21); and the twisting pieces (246) are used to drive the two ends of the fixing clamp (24) to rise and fall, so as to twist the workpiece during tension stretching; The auxiliary straightening unit (3) comprises a sliding support (31) and a roller pressing seat (32) which are slidably arranged on the straightening table (1); a directional roller pressing member (34) and a direction-changing roller pressing member (35) are arranged in the roller pressing seat (32); the direction-changing roller pressing member (35) can be selectively arranged on the top or one side of the directional roller pressing member (34); The direction-changing rolling member (35) is located on top of the directional rolling member (34) and is used for relative rolling so that the workpiece is squeezed; The direction-changing rolling member (35) is located on one side of the directional rolling member (34) and is used for offset rolling so that the workpiece is bent; The rolling seat (32) is rotatably arranged on the sliding support (31), so that the directional rolling member (34) and the direction-changing rolling member (35) can roll the workpiece at different angles.

2. A novel tension straightening device according to claim 1, characterized in that: The fixing fixture (24) includes a jacket (241) and an upper pressure plate (243) movably arranged at the top of the jacket (241); a downward pressure cylinder (244) is fixedly arranged at the top of the jacket (241); an output end of the downward pressure cylinder (244) movably penetrates into the interior of the jacket (241) and is fixedly connected to the upper pressure plate (243); a positioning shaft (245) is fixedly arranged at the top of the upper pressure plate (243), and the positioning shaft (245) movably penetrates the top wall of the jacket (241); and the variable contact member (242) is arranged in the inner bottom of the jacket (241).

3. A novel tension straightening device according to claim 2, characterized in that: The inner bottom of the jacket (241) is provided with a receiving groove (249), and the variable contact member (242) includes: A plurality of lower clamping strips (2421) are arranged in the clamping jacket (241); A sliding drive bar (2422) is slidably disposed at the bottom of the plurality of lower clamping bars (2421) and is perpendicular to the lower clamping bars (2421); The receiving groove (2425) is provided at the bottom of the lower clamping strip (2421), and the width of the receiving groove (2425) at the bottom of the plurality of lower clamping strips (2421) is increased progressively; A wedge-shaped top block (2426) is integrally formed on the top of the sliding drive bar (2422), and a plurality of wedge-shaped top blocks (2426) are respectively disposed in a plurality of receiving grooves (2425), so that the sliding drive bar (2422) can sequentially push up the plurality of lower clamping bars (2421) when sliding; A lifting cylinder (2424) is fixedly arranged at the bottom of the jacket (241), and the lifting cylinder (2424) is transmission-connected to the sliding drive bar (2422).

4. A novel tension straightening device according to claim 3, characterized in that: A receiving groove (249) is provided in the jacket (241), and the lower clamping strip (2421) is vertically slidably arranged in the receiving groove (249). A sliding groove (248) perpendicular to the receiving groove (249) is provided at the bottom of the jacket (241), and the sliding groove (248) is connected to the inside of the receiving groove (249). The sliding drive strip (2422) is slidably connected in the sliding groove (248), and a connecting strip (2423) is fixedly connected between the plurality of sliding drive strips (2422) and the output end of the lifting cylinder (2424).

5. A novel tension straightening device according to claim 2, characterized in that: The torsion member (246) includes a fixing frame (2461) fixedly assembled on both sides of the top of the jacket (241), a deformable rubber pad (2463) is installed between the fixing frame (2461) and the jacket (241), and an assembly notch (2464) is provided on the deformable rubber pad (2463) and the jacket (241), a rotating shaft (2462) is rotatably provided on the top of the fixing frame (2461), and a torsion cylinder (2465) is installed on the top of the rotating shaft (2462).

6. A novel tension straightening device according to claim 5, characterized in that: A cover plate (22) is fixedly provided on the top of the clamping seat (21), and the torsion cylinder (2465) is fixedly assembled in the cover plate (22). A vertical positioning groove (25) is provided on the inner wall of the clamping seat (21), and the end of the rotating shaft (2462) is slidably provided in the vertical positioning groove (25). Rotating ears (247) are fixedly provided on both sides of the middle part of the sleeve (241), and the rotating ears (247) are rotatably connected to the inner wall of the clamping seat (21). A material trough (23) is provided on both sides of the clamping seat (21).

7. The novel tension straightening equipment according to claim 1 is characterized in that: The directional roller pressing member (34) includes a lower roller (341), and an upper pull cylinder (342) is fixedly provided on both sides of the sliding support (31), and both ends of the lower roller (341) are rotatably connected to the output end of the upper pull cylinder (342); The direction-changing roller pressure member (35) includes an upper roller (351), and carrier plates (353) are slidably provided on both sides of the top of the sliding support (31). A lower top cylinder (352) is fixedly provided on the carrier plate (353). The two ends of the upper roller (351) are rotatably connected to the output end of the lower top cylinder (352). The top cover of the sliding support (31) is fixedly provided with a direction-changing cylinder (355), and a synchronization bar (354) is fixedly provided between the output end of the direction-changing cylinder (355) and the two groups of carrier plates (353).

8. A novel tension straightening device according to claim 7, characterized in that: A rotating cylinder (33) is fixedly provided at the bottom of the sliding support (31), and the output end of the rotating cylinder (33) is fixedly connected to the roller pressing seat (32). Support shafts (38) are rotatably provided at the openings on both sides of the sliding support (31); Both sides of the sliding support (31) are provided with linear grooves (36), one side of the linear groove (36) is provided with an L-shaped groove (37) connected thereto, the L-shaped groove (37) and the linear groove (36) are combined to form an n-shaped groove, the lower roller (341) is slidably arranged in the linear groove (36), and the direction-changing roller pressing member (35) is slidably arranged in the n-shaped groove.

9. The novel tension straightening equipment according to claim 1 is characterized in that: Slide rails (16) are fixedly provided on both sides of the top of the straightening platform (1), and the clamping seat (21) and the sliding support (31) are both slidably provided on the slide rails (16). A sinking groove (15) is provided on the inner top of the straightening platform (1), and a linear motor (17) is fixedly provided in the sinking groove (15). The sliding support (31) is fixedly assembled with the mover of the linear motor (17). Servo cylinders (18) are fixedly provided on both sides of the sinking groove (15), and two groups of the servo cylinders (18) are respectively fixedly connected to the two groups of clamping seats (21).

10. A novel tension straightening device according to claim 9, characterized in that: A PLC control machine (12) is fixedly provided on the straightening platform (1), a positioning support frame (13) is fixedly provided at the feeding end of the straightening platform (1), and a bracket (14) is fixedly provided at the discharging end of the straightening platform (1).

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