CN115255053A

CN115255053A - High-performance bending device for controlling resilience and application method thereof

Info

Publication number: CN115255053A
Application number: CN202210646491.1A
Authority: CN
Inventors: 牛宝全; 马喜春; 林跃鲤
Original assignee: Shanghai Niutun Precision Manufacturing Co ltd
Current assignee: Shanghai Niutun Precision Manufacturing Co ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-11-01

Abstract

The invention discloses a springback-controlled high-performance bending device and an application method thereof, and belongs to the field of sheet metal equipment.

Description

High-performance bending device for controlling resilience and application method thereof

Technical Field

The invention discloses a high-performance bending device for controlling resilience and an application method thereof, and belongs to the field of sheet metal equipment.

Background

The bending machine is a machine capable of bending thin plates, the mechanism form of the bending machine is various, a U-shaped bending piece is bent, an air cylinder is usually adopted to drive an arc-shaped punching head, a matched die is used for punching the thin plates, the bending machine is enabled to form U-shaped bending, some materials have strong yield strength, the bending piece can rebound by only performing common bending, the yield strength of the bending piece can be overcome by excessive bending at the moment, the degree of excessive bending needs to be calculated and actually tested, the thickness and the materials of the thin plates are various, the die needs to be readjusted every time different thin plates are replaced, manpower is consumed very much, and therefore a novel bending device is needed to solve the problem.

Disclosure of Invention

The present invention is directed to solving the above problems and to providing a high-performance bending apparatus for controlling springback and a method of using the same.

The invention realizes the aim through the following technical scheme, and the high-performance bending device for controlling resilience and the application method thereof comprise a base, a support, a stamping head, a die and a cylinder, wherein the support is fixed on the base, the cylinder is fixedly connected with the support, the stamping head is fixed on a piston rod of the cylinder, the die is arranged on the base and is positioned below the stamping head, the die comprises a sliding block and two swinging blocks, the sliding block is connected with the base in a sliding manner, the base is provided with rotating grooves for the swinging blocks to rotate on two sides of the sliding block, the sliding block is provided with movable grooves for pushing the swinging blocks to rotate on two sides, the base is fixed with a detection block, the detection block is provided with a detection groove with the same shape as a qualified bending piece, the base is provided with the stepping mechanism who is used for promoting the sheet material through detecting the groove in mould both sides, stepping mechanism is including promoting the subassembly and being used for driving the drive assembly that promotes the subassembly and move along the rectangle orbit, it includes fixed plate and control panel to promote the subassembly, a plurality of catch plates that set up at intervals each other of fixed plate fixedly connected with, fixed plate and control panel sliding connection, and be provided with elastic component one between fixed plate and the control panel, fixed plate sliding connection has the push rod, be provided with between fixed plate and the control panel and utilize the relative slip between fixed plate and the control panel to drive the gliding feedback mechanism of push rod, base sliding connection has the regulating block, be connected with elastic component two between regulating block and the slider, the base is provided with and utilizes the push rod to slide and drives the gliding drive mechanism of regulating block.

By adopting the technical scheme, the sheet material can be intermittently pushed to move forwards by utilizing the stepping mechanism, the bent piece after being bent can be subjected to appearance detection by pushing the bent piece to the detection groove on the detection block, if the bent piece can pass through the detection groove, the product is qualified, the bending device is driven by the stepping mechanism, if the bent piece fails, the bending piece is represented to rebound, the feedback mechanism can transmit the change to the transmission mechanism, the adjusting block moves downwards, the bending device can bend the bent piece to a greater degree by increasing the sliding distance of the sliding block, then the stepping mechanism can drive the bent piece to pass through the detection groove again, if the bent piece still fails, the sliding distance of the sliding block is increased again until the bent piece is qualified, the adjusting block can be kept at the current position as long as the bent piece is once, the subsequent processing is carried out according to the current bending degree, and the labor consumed by calculating the excessive bending amount and adjusting the die is saved when the sheet material with different thicknesses or materials is replaced at every time.

Preferably, the driving assembly comprises a first cam, a second cam, a driving plate, two driving blocks and two driving springs, the driving plate is fixedly connected with the control plate, the driving plate is perpendicular to the control plate, the first cam is abutted with the control plate, the second cam is abutted with the driving plate, the first cam is coaxially and fixedly connected with the second cam, the first cam is rotatably connected with the base, the second cam is slidably connected with the base, the sliding directions of the two driving blocks are perpendicular to each other, the two driving blocks are abutted with the fixed plate and the control plate, and the two driving springs are respectively connected between the two driving blocks and the base.

By adopting the technical scheme, the angle difference between the first cam and the second cam is utilized to ensure that the first cam and the second cam have time difference when being abutted against the control board and the drive board, and the drive block and the drive spring are utilized to drive the sliding in the opposite direction, so that the effect of driving the pushing assembly to slide according to the rectangular track is realized.

Preferably, the feedback mechanism comprises a fixed rack, a driving gear and a sliding rack, the fixed rack is fixedly connected with the control panel, the driving gear is rotatably connected with the fixed plate, the sliding rack is slidably connected with the fixed plate, the fixed rack and the sliding rack are both meshed with the driving gear, and the sliding rack is fixedly connected with the push rod.

Through adopting above-mentioned technical scheme, when taking place the relative slip between control panel and the fixed plate, the control panel can drive fixed rack and slide relatively with the fixed plate, and drive gear keeps not taking place the displacement on the fixed plate this moment, and consequently fixed rack can drive gear and rotate, and the rotation of driven gear can drive the slip rack and slide to the realization utilizes the relative slip between fixed plate and the control panel to drive the gliding effect of push rod.

Preferably, drive mechanism includes driving rack, drive gear, screwed pipe, kicking piece and one-way bearing, one-way bearing and screwed pipe fixed connection, drive gear and one-way bearing fixed connection, driving rack and base sliding connection, and driving rack and drive gear mesh mutually, be provided with elastic component three between driving rack and the base, driving rack and push rod looks butt, the kicking piece is worn to establish in the screwed pipe, and with screwed pipe threaded connection, kicking piece and base sliding connection, and the mutual butt of kicking piece and regulating block, the base is provided with the canceling release mechanical system that the drive ejector pin resets.

Through adopting above-mentioned technical scheme, when the push rod takes place to slide, can promote the transmission rack to slide towards the direction of overcoming the good three of elasticity, the slip drive gear of transmission rack rotates, drive gear drives the screwed pipe through one-way bearing and rotates, make the head piece slide and drive the regulating block and slide under the screw thread effect of screwed pipe, when push rod and transmission rack separation, the transmission rack slides under the drive of elastic component three, drive gear reverse rotation, and because the characteristics of the one-way transmission moment of torsion of one-way bearing, the screwed pipe can not driven this moment, thereby realize that the push rod just makes the regulating block move down one section distance once of slip.

Preferably, canceling release mechanical system includes rolling wheel, spool, clockwork spring, rope, ratchet, pawl and pressure spring, rolling wheel fixed connection is in the screwed pipe outside, the spool rotates with the base to be connected, and is connected with the clockwork spring between spool and the base, the one end and the rolling wheel fixed connection of rope, and the other end and the spool fixed connection of rope, the rope winding is on the spool, ratchet and spool fixed connection, base sliding connection has the connecting block, the pawl rotates with the connecting block to be connected, pressure spring connects between pawl and connecting block, pawl and ratchet mesh mutually, the base is provided with and is used for driving the gliding control mechanism of connecting block.

Through adopting above-mentioned technical scheme, when the screwed pipe rotates at every turn and drives the regulating block and move down, the rolling wheel all can carry out the rolling to the rope, thereby make the spool of winding around the rope take place rotatoryly, the rotation of spool makes the clockwork spring warp the energy storage, and the ratchet, pawl and compression spring's cooperation makes the unable counter rotation of spool, therefore the clockwork spring can keep the deformation state, when the pawl under control mechanism's drive with the ratchet separation, clockwork spring release capacity drives spool counter rotation, make the spool carry out the rolling to the rope, drive screwed pipe counter rotation, make the kicking upwards promote the regulating block and slide, make the regulating block accomplish to reset.

Preferably, control mechanism includes control lever, ejector pad one, ejector pad two and reset spring one, control lever and base sliding connection, ejector pad one and control lever fixed connection, ejector pad two and connecting block fixed connection, ejector pad one and the mutual butt of ejector pad two, and ejector pad one and ejector pad two all are provided with the inclined plane that the inclination is the same in mutual butt department, reset spring one is connected between connecting block and base.

By adopting the technical scheme, the pushing block I drives the pushing block II to move by utilizing the inclined plane through pushing the control rod to slide downwards, the connecting block drives the pawl to be separated from the ratchet wheel through the movement of the pushing block II, the reset spring I is deformed, and after the control rod is loosened, the connecting block is reset under the driving of the reset spring I, so that the pawl is meshed with the ratchet wheel again, meanwhile, the connecting block also drives the pushing block II to slide, so that the pushing block II drives the pushing block I to slide by utilizing the inclined plane, and the control rod is reset.

Preferably, a negative pressing part is connected between each two pushing plates in a sliding mode, an air cavity is formed in each negative pressure plate, the air cavities of the negative pressing parts are communicated with each other through connecting pipes, each negative pressing part is connected with an air pipe in a sliding mode, the air pipes penetrate through the negative pressing parts and are provided with air holes, a second reset spring is arranged between each air pipe and each negative pressing part, each air pipe is fixedly connected with a sucker, each sucker is provided with a through hole communicated with the corresponding sliding pipe, an ejector rod is arranged at the bottom of each negative pressing part, and the base is provided with an inclined boss used for driving the ejector rod to slide upwards.

Through adopting above-mentioned technical scheme, when the in-process of slurcam inserting the sheet material both sides, gas pocket on the trachea can be linked together with the air cavity for the sucking disc will bend a piece and adsorb, and through the cooperation of ejector pin and oblique boss, will bend a piece and upwards lift up, thereby reduce the friction of bending a piece and base, and let transport more stably.

An application method of a high-performance bending device for controlling springback, comprising the following steps of:

s1: firstly, resetting the adjusting block through a resetting mechanism;

s2: placing a plate on a base, and driving the plate to be above the die under the driving of a stepping mechanism;

s3: the stamping head bends the plate under the driving of the cylinder;

s4: the step mechanism pushes the plate processed in the step S3 to a detection groove of the detection block;

s5: through the detection of the step S4, if the plate passes through the detection groove, the process is finished, and if the plate is not rebounded, the push rod is driven to slide through the feedback mechanism, so that the transmission mechanism drives the adjusting block to slide downwards, the sliding distance of the sliding block is increased, and the plate can be bent excessively;

s6: and the step S3 is carried out again.

Compared with the prior art, the invention has the beneficial effects that:

(1) The detection groove on the detection block can be used for detecting a bent piece bent according to the current bending degree, if the bent piece cannot be rebounded through the detection groove, the stepping mechanism is utilized, the feedback mechanism and the transmission mechanism are matched with each other, the adjusting block can be moved downwards, the sliding distance of the slider is increased, so that the bending device can bend the bent piece to a greater degree, the bending degree is repeatedly detected and increased, the bent piece finally meets the size requirement, the transmission mechanism can enable the adjusting block to be kept at the position adjusted at the last time, the follow-up bending is performed according to the bending degree, and the labor for calculating the excessive bending amount and adjusting the mould to consume when the plates with different thicknesses or materials are replaced at each time is saved.

(2) Utilize mutually supporting of burden casting die, trachea, sucking disc, ejector pin and oblique boss for when stepping mechanism drove the piece of bending and removes, the piece of bending can the rebound and the base separation, reduce with the base and the slider between the friction, and make the transport of the piece of bending more stable

Drawings

FIG. 1 is a schematic diagram of the overall structure of a high-performance bending apparatus for controlling springback and a method for using the same according to the present invention;

FIG. 2 is a schematic cross-sectional view of a high performance bending apparatus for controlling spring-back and method of use thereof in accordance with the present invention;

FIG. 3 is a schematic structural diagram of a driving assembly and a feedback mechanism of a high-performance bending apparatus for controlling springback and a method for applying the same according to the present invention;

FIG. 4 is a schematic diagram of a driving structure of a high-performance bending apparatus for controlling springback and a method for applying the same according to the present invention;

FIG. 5 is a schematic structural view of a resetting mechanism of a high-performance bending apparatus for controlling springback and a method for applying the same according to the present invention;

FIG. 6 is a schematic structural diagram of a control mechanism of a high-performance bending apparatus for controlling springback and an application method thereof according to the present invention.

Reference numerals: 1. a base; 2. a support; 3. stamping a head; 4. a cylinder; 5. a slider; 6. swinging a block; 7. a detection block; 8. a fixing plate; 9. a control panel; 10. a push plate; 11. a first elastic part; 12. a push rod; 13. a regulating block; 14. a second elastic part; 15. a first cam; 16. a second cam; 17. a drive plate; 18. a drive block; 19. a drive spring; 20. fixing a rack; 21. a drive gear; 22. a sliding rack; 23. a drive rack; 24. a transmission gear; 25. a threaded pipe; 26. a top piece; 27. a one-way bearing; 28. an elastic member III; 29. a winding wheel; 30. a rope; 31. a reel; 32. an inclined boss; 33. a ratchet wheel; 34. a pawl; 35. a compression spring; 36. a control lever; 37. a first push block; 38. a second push block; 39. a first return spring; 40. connecting blocks; 41. a negative pressure piece; 42. a connecting pipe; 43. an air pipe; 44. a suction cup; 45. a second return spring; 46. and a push rod.

Detailed Description

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-2, a high-performance bending device for controlling springback and an application method thereof, include a base 1, a support 2, a stamping head 3, a mold and a cylinder 4, the support 2 is fixed on the base 1, the cylinder 4 is fixedly connected with the support 2, the stamping head 3 is fixed on a piston rod of the cylinder 4, the mold is disposed on the base 1, and the mold is located below the stamping head 3, the mold includes a slider 5 and two swing blocks 6, the slider 5 is slidably connected with the base 1, the base 1 is provided with rotation grooves for the swing blocks 6 to rotate on two sides of the slider 5, two sides of the slider 5 are provided with movable grooves for pushing the swing blocks 6 to rotate, when the bending device works, a sheet is placed above the slider 5, the cylinder 4 drives the stamping head 3 to press the sheet and the slider 5 downward, the slider 5 drives the middle axis of the stamping head 3 to slide downward, the swing blocks 6 are integrally L-like, the shape which can rotate with the bending position as a fulcrum, one end of the swing blocks 6 is embedded into the movable grooves, therefore, when the slider 5 slides downward, the other end of the slider can be close to the slider 5, and the slider 5 is pushed to the bending is completed.

As shown in fig. 1-2, a detection block 7 is fixed on a base 1, the detection block 7 is provided with a detection groove having the same shape as that of a qualified bent piece, the base 1 is provided with stepping mechanisms for pushing a material of a plate 10 to pass through the detection groove at two sides of a die, each stepping mechanism comprises a pushing assembly and a driving assembly for driving the pushing assembly to move along a rectangular track, each pushing assembly comprises a fixing plate 8 and a control plate 9, the fixing plate 8 is fixedly connected with a plurality of pushing plates 10 arranged at intervals, the fixing plate 8 is slidably connected with the control plate 9, an elastic piece I11 is arranged between the fixing plate 8 and the control plate 9, the fixing plate 8 is slidably connected with a push rod 12, a feedback mechanism for driving a push rod 12 to slide by using relative sliding between the fixing plate 8 and the control plate 9 is arranged between the fixing plate 8 and the control plate 9, the base 1 is slidably connected with an adjusting block 13, and an elastic piece II 14 is connected between the adjusting block 13 and the sliding block 5, the base 1 is provided with a transmission mechanism which utilizes a push rod 12 to slide and drive an adjusting block 13 to slide, when the bending is finished, a stepping mechanism drives a bent piece which finishes the bending to be conveyed forwards, the stepping mechanism drives a control plate 9 and a fixed plate 8 to move according to a rectangular track through a driving assembly, so that a pushing plate 10 is firstly inserted into two sides of the plate, then the plate is driven to move forwards, then the pushing plate 10 is withdrawn from two sides of the plate, and finally returns to the initial position, thereby realizing the pushing of the plate, the bent piece can move towards a detection groove on a detection block 7 under the pushing of the stepping mechanism, if the bent piece can pass through the detection groove, the bent product is qualified, the base 1 is directly pushed out through the stepping mechanism, if the bent piece can not pass through the detection groove, the plate is rebounded, and the fixed plate 8 and the pushing plate 10 can be clamped and can not move forwards, and the control panel 9 and the fixed plate 8 can slide, therefore, the control panel 9 can still slide under the drive of the drive assembly, relative sliding occurs between the fixed plate 8 and the control panel 9, the push rod 12 is driven to move through the feedback mechanism by utilizing the relative sliding, the push rod 12 drives the adjusting block 13 to move downwards through the transmission mechanism, so that the distance between the adjusting block 13 and the sliding block 5 is increased, the distance that the sliding block 5 can slide downwards is lengthened at the moment, the rotatable angle of the two swinging blocks 6 is larger, the plate can be further bent, springback is overcome, then the plate is pushed to the detection groove by the stepping mechanism again, the process is repeated continuously until the plate can pass through, the transmission mechanism can enable the adjusting block 13 to be kept at the position adjusted at the last time, the sliding block 5 bent at the next time also keeps the current sliding depth, and the bending device can automatically adjust the degree of excessive bending according to the difference of the material and the thickness of the plate in the mode, the labor required for adjusting the die is reduced, and the production efficiency is improved.

Wherein the existence of elastic component 11 makes the relative slip between control panel 9 and the fixed plate 8 have certain resistance, and when only fixed plate 8 was blocked, just can take place relative slip between fixed plate 8 and the control panel 9, and two 14 messenger's sliders 5 can reset after the completion is bent to the panel.

As shown in fig. 3-4, the driving assembly includes a first cam 15, a second cam 16, a driving plate 17, two driving blocks 18 and two driving springs 19, the driving plate 17 and the control plate 9 are fixedly connected, the driving plate 17 is arranged perpendicular to the control plate 9, the first cam 15 abuts against the control plate 9, the second cam 16 abuts against the driving plate 17, the first cam 15 and the second cam 16 are coaxially and fixedly connected, the first cam 15 and the second cam 16 are rotatably connected to the base 1, the two driving blocks 18 are slidably connected to the base 1, the sliding directions of the two driving blocks 18 are perpendicular to each other, the two driving blocks 18 abut against the fixed plate 8 and the control plate 9, the two driving springs 19 are respectively connected between the two driving blocks 18 and the base 1, the first cam 15 and one group of driving blocks 18 and one group of driving springs 19 are used for driving the pushing assembly to be inserted into or pushed out of two sides of a sheet, the second cam 16 and the other group of driving blocks 18 and the driving springs 19 are responsible for driving the pushing assembly to move forward or reset, a certain angle is provided between the first cam 15 and the second cam 16, when the first cam 15 and the second cam 16 rotate coaxially, the first cam 15 and the second cam 15 contact with the driving block 9, the driving plate 10 to drive the driving plate to move forward, and the other driving plate to move, and the driving plate 10 to move forward, and the driving plate 10 to move before the driving plate 15 and the driving plate 10.

As shown in fig. 4, the feedback mechanism includes a fixed rack 20, a driving gear 21 and a sliding rack 22, the fixed rack 20 is fixedly connected to the control board 9, the driving gear 21 is rotatably connected to the fixing plate 8, the sliding rack 22 is slidably connected to the fixing plate 8, both the fixed rack 20 and the sliding rack 22 are engaged with the driving gear 21, the sliding rack 22 is fixedly connected to the push rod 12, when relative sliding occurs between the control board 9 and the fixing plate 8, the control board 9 can drive the fixed rack 20 to slide relative to the fixing plate 8, at this time, the driving gear 21 is kept on the fixing plate 8 without displacement, so that the fixed rack 20 can drive the driving gear 21 to rotate, and the rotation of the driving gear 21 can drive the sliding rack 22 fixedly connected to the push rod 12 to slide, thereby achieving the effect of driving the push rod 12 to slide by using the relative sliding between the fixing plate 8 and the control board 9.

As shown in fig. 2 and 5, the transmission mechanism includes a transmission rack 23, a transmission gear 24, a threaded pipe 25, a top member 26 and a one-way bearing 27, the one-way bearing 27 is fixedly connected with the threaded pipe 25, the transmission gear 24 is fixedly connected with the one-way bearing 27, the transmission rack 23 is slidably connected with the base 1, the transmission rack 23 is meshed with the transmission gear 24, a third elastic member 28 is disposed between the transmission rack 23 and the base 1, the transmission rack 23 is abutted against the push rod 12, the top member 26 is inserted into the threaded pipe 25 and is threadedly connected with the threaded pipe 25, the top member 26 is slidably connected with the base 1, the top member 26 is abutted against the adjusting block 13, the base 1 is provided with a reset mechanism for resetting the push rod 46, when the push rod 12 slides, the transmission rack 23 is pushed to slide in a direction overcoming the third elastic member 28, the transmission rack 23 slides to drive the transmission gear 24 to rotate, the transmission gear 24 drives the threaded pipe 25 to rotate through the one-way bearing 27, so that the top member 26 slides under the threaded pipe 25 and drives the adjusting block 13 to slide, when the push rod 12 is separated from the transmission rack 23, the transmission rack 23 drives the threaded pipe to rotate, and the adjusting block 13, the one-way bearing 27, so that the one-way torque transmission of the one-way bearing is not driven by the one-way bearing is driven by the one-way bearing 27, and the one-way bearing is not driven by the one-way bearing, thereby realizing the one-way adjustment block 13.

The direction of the push rod 12 pushing the transmission rack 23 is opposite to the direction of the fixed plate 8, so that when the push rod 12 moves under the driving of the fixed plate 8, the transmission rack 23 is not pushed, and only under the driving of the feedback mechanism, the transmission rack 23 is pushed.

As shown in fig. 5, the reset mechanism comprises a winding wheel 29, a winding shaft 31, a clockwork spring, a rope 30, a ratchet 33, a pawl 34 and a hold-down spring 35, the winding wheel 29 is fixedly connected to the outer side of the threaded pipe 25, the winding shaft 31 is rotatably connected with the base 1, the clockwork spring is connected between the winding shaft 31 and the base 1, one end of the rope 30 is fixedly connected with the winding wheel 29, the other end of the rope 30 is fixedly connected with the winding shaft 31, the rope 30 is wound on the winding shaft 31, the ratchet 33 is fixedly connected with the winding shaft 31, the base 1 is slidably connected with a connecting block 40, the pawl 34 is rotatably connected with the connecting block 40, the hold-down spring 35 is connected between the pawl 34 and the connecting block 40, the pawl 34 is meshed with the ratchet 33, the base 1 is provided with a control mechanism for driving the connecting block 40 to slide, the winding wheel 29 is fixed on the threaded pipe 25, when the adjusting block 13 is driven by each rotation of the threaded pipe 25 to move downwards, the winding wheel 29 winds the rope 30, so that the winding shaft 31 wound around the rope 30 rotates, the winding shaft 31 rotates to enable the clockwork spring to deform and store energy, the ratchet wheel 33, the pawl 34 and the compression spring 35 are matched to enable the winding shaft 31 not to rotate reversely, so that the clockwork spring can keep a deformation state, when the pawl 34 is driven by the control mechanism to be separated from the ratchet wheel 33, the winding shaft 31 is driven by clockwork spring releasing capacity to rotate reversely, the rope 30 is wound by the winding shaft 31, the threaded pipe 25 is driven to rotate reversely, the top piece 26 pushes the adjusting block 13 upwards to slide, the adjusting block 13 is enabled to complete resetting, wherein under the action of the one-way bearing 27, the reverse rotation of the threaded pipe 25 cannot be transmitted to the transmission gear 24, and therefore the transmission mechanism part cannot be influenced by the resetting mechanism.

As shown in fig. 5-6, the control mechanism includes a control rod 36, a first push block 37, a second push block 38 and a first return spring 39, the control rod 36 is slidably connected to the base 1, the first push block 37 is fixedly connected to the control rod 36, the second push block 38 is fixedly connected to a connecting block 40, the first push block 37 and the second push block 38 abut against each other, and the first push block 37 and the second push block 38 are provided with inclined surfaces having the same inclination at the abutting positions, the first return spring 39 is connected between the connecting block 40 and the base 1, the first push block 37 drives the second push block 38 to move by the inclined surfaces by pushing the control rod 36 to slide downwards, the connecting block 40 drives the pawl 34 to separate from the ratchet wheel 33 by the connecting block 40, and the first return spring 39 is deformed, after the control rod 36 is released, the connecting block 40 is reset by the first return spring 39, so that the pawl 34 is engaged with the ratchet wheel 33 again, and the connecting block 40 also drives the second push block 38 to slide, so that the second push block 38 drives the first push block 37 to slide by the inclined surfaces, and the control rod 36 is reset.

As shown in fig. 1-2, a negative pressure part 41 is slidably connected between each pushing plate 10, an air cavity is formed in the negative pressure plate, the air cavity of each negative pressure part 41 is communicated with each other through a connecting pipe 42, an air pipe 43 is slidably connected to each negative pressure part 41, the air pipe 43 penetrates through the negative pressure part 41, an air hole is formed in the air pipe 43, a second return spring 45 is arranged between the air pipe 43 and the negative pressure part 41, the air pipe 43 is fixedly connected with a suction cup 44, the suction cup 44 is provided with a through hole communicated with the sliding pipe, a top rod 46 is arranged at the bottom of the negative pressure part 41, an inclined boss 32 for driving the top rod 46 to slide upwards is arranged on the base 1, when the pushing plates 10 are inserted into two sides of a plate, the suction cups 44 on the air pipe 43 are firstly attached to the surface of a bent part, then due to the blockage of the bent part, the air pipe 43 slides in the direction of overcoming the elastic force of the second return spring and the air hole slides into the air cavity of the negative pressure part 41, the connecting pipe 42 is connected with the air pump, negative pressure is formed in the air cavity by air suction of the air pump, when the air hole slides into the negative pressure part 41, the air pipe 43 is communicated with the air cavity, negative pressure is formed on the air pipe 43, the air pipe 43 is communicated with the through hole, the bent part is adsorbed by the sucker 44, the ejector rod 46 of the negative pressure part 41 is contacted with the inclined boss 32, the ejector rod 46 drives the negative pressure part 41 to slide upwards under the action of the inclined boss 32, the bent plate is driven by the sucker 44 to move upwards and is separated from the slider 5 or the base 1, friction between the bent part and the base 1 and the slider 5 is reduced, when the push plate 10 begins to withdraw from two sides of the plate, the ejector rod 46 slides down from the inclined boss 32 firstly, the negative pressure part 41 is reset under the action of self weight, the bent part is driven to return to the base 1, then the air pipe 43 resets under the elastic action of the second reset spring 45, so that the air hole exits from the air cavity, the air pressure in the air pipe 43 returns to normal, and the suction cup 44 loosens the bending piece.

An application method of a high-performance bending device for controlling springback comprises the following steps:

s1: firstly, resetting the adjusting block 13 through a resetting mechanism;

s2: a plate is placed on the base 1 and is driven to be above the die by the stepping mechanism;

s3: the stamping head 3 bends the plate under the driving of the cylinder 4;

s4: the stepping mechanism pushes the plate processed in the step S3 to a detection groove of the detection block 7;

s5: through the detection of the step S4, if the plate passes through the detection groove, the process is finished, and if the plate is not rebounded, the push rod 12 is driven to slide through the feedback mechanism, so that the transmission mechanism drives the adjusting block 13 to slide downwards, the sliding distance of the sliding block 5 is increased, and the plate can be bent excessively;

s6: re-performing the S3 step

In summary, the working principle of the invention is as follows:

the adjusting block 13 is reset before bending, the control rod 36 is pushed first, so that the control rod 36 drives the first pushing block 37 to move downwards, the first pushing block 37 drives the second pushing block 38 to move backwards by utilizing the inclined surface, the connecting block 40 slides towards the direction of overcoming the elastic force of the first reset spring 39 and drives the pawl 34 to separate from the ratchet wheel 33, at the moment, the rotation of the reel 31 is not limited any more, the spring releases the elastic force to drive the reel 31 to rotate, the reel 31 winds the rope 30, the winding wheel 29 drives the threaded pipe 25 to rotate under the pulling of the rope 30, the ejector rod 46 pushes the adjusting block 13 to slide upwards, the resetting of the adjusting block 13 is completed, and at the moment, the distance between the sliding block 5 and the adjusting block 13 only can be used for normally bending the plate.

Then, the first bending is carried out, the plate is placed on the base 1, the plate is located between the two pushing plates 10, then the first cam 15 and the second cam 16 are driven to rotate, the first cam 15 firstly abuts against the control plate 9 and pushes the control plate 9 to slide, the fixing plate 8 pushes one of the driving blocks 18 to slide in a direction of overcoming the elastic force of the driving spring 19, the pushing plates 10 are driven to move to two sides of the plate, then the second cam 16 abuts against the driving plate 17, the control plate 9 slides under the driving of the driving plate 17, the other driving block 18 slides in a direction of overcoming the elastic force of the driving spring 19, meanwhile, the pushing plates 10 push the plate 10 to move forwards, and then the first cam 15 and the second cam 16 are separated from the control plate 9 and the driving plate 17 in sequence, the control plate 9 and the fixed plate 8 are respectively pushed by the two driving blocks 18 under the action of the elastic force of the two driving springs 19, the pushing plate 10 is firstly withdrawn from the two sides of the plate and then reset to the original position, the plate is conveyed to a position between the sliding block 5 and the punching head 3 for the first time, at the moment, the air cylinder 4 is started to drive the punching head 3 to move downwards and press the plate and the sliding block 5, the sliding block 5 slides towards the direction overcoming the elastic force of the second elastic part 14, the middle part of the plate is pressed by the punching head 3 to move downwards, the two ends of the plate are supported by the swinging blocks 6 and cannot move downwards, so that the plate is bent from the middle part, then the swinging blocks 6 on the two sides of the sliding block 5 start to rotate, the two ends of the pushing plate 10 move towards the central axis of the sliding block 5, when the sliding block 5 and the adjusting block 13 are pressed, the bending is finished, and the plate finally forms a U-shaped bent part.

Then, the first detection is carried out, the punching head 3 is separated from the bent piece under the driving of the cylinder 4, the sliding block 5 is reset under the elastic force of the second elastic piece 14 and takes the bent piece out of the base 1, at the moment, the first cam 15 and the second cam 16 start to rotate again, at the moment, the plate is changed into the bent piece from the plate and has a certain height, so that the sucking disc 44 between the pushing plates 10 can be pressed on the bent piece, the air pipe 43 slides towards the direction overcoming the elastic force of the second reset spring 45, the air hole on the air pipe 43 enters the air cavity of the negative pressure piece 41, at the moment, the inside of the air pipe 43 is communicated with the air cavity through the air hole and forms negative pressure, the sucking disc 44 adsorbs the bent piece, the ejector rod 46 of the negative pressure piece 41 starts to be in contact with the inclined boss 32 and moves upwards under the inclined plane of the inclined boss 32, the air pipe 43 drives the bent piece to move upwards to be separated from the sliding block 5, and then the bent piece starts to move towards the detection groove on the detection block 7 under the driving of the pushing plate 10.

When the bending piece can pass through the detection groove, the push plate 10 moves according to a normal track, after the push plate 10 sends the bending piece into the detection groove, the two sides of the bending piece begin to exit, at the moment, the ejector rod 46 leaves the inclined boss 32 firstly, so that the negative pressure piece 41 descends under the action of the dead weight, the bending piece returns to the base 1, then the air pipe 43 resets under the elastic action of the second reset spring 45, so that the air hole exits from the air cavity, the negative pressure state is relieved in the air pipe 43, the sucking disc 44 loosens the bending piece, at last, the push plate 10 resets, at the moment, the bending piece is placed in the detection groove, and the next-time cam first 15 and the cam second 16 rotate to send the bending piece out of the bending device.

When the bent piece cannot pass through the detection groove, the fixed plate 8 cannot slide due to the fact that the pushing plate 10 is blocked by the bent piece, at this time, the control plate 9 slides against the elastic force of the driving spring 19 and the elastic piece I11 under the driving of the cam II 16 and drives the fixed rack 20 to move, the movement of the fixed rack 20 enables the driving gear 21 to rotate and drives the sliding rack 22 to slide, the sliding rack 22 drives the push rod 12 to slide, the push rod 12 pushes the driving rack 23 to slide towards the direction overcoming the elastic force of the elastic piece III 28, the sliding of the driving rack 23 enables the transmission gear 24 to rotate, the transmission gear 24 transmits rotation to the threaded pipe 25 through the one-way bearing 27, the threaded pipe 25 rotates to enable the push rod 46 to slide downwards under the action of threads, and the adjusting block 13 moves downwards under the elastic force of the elastic piece II 14, the sliding distance of the sliding block 5 is increased, then the first cam 15 and the second cam 16 are separated from the driving plate 17 and the control plate 9, so that the pushing plate 10 exits from the two sides of the bending piece under the action of the driving block 18 and the driving spring 19, the control plate 9 and the fixing plate 8 are in a mutually staggered state under the action of the elastic force of the first elastic piece 11, the fixed rack 20 drives the sliding rack 22 to reset through the driving gear 21, the push rod 12 is separated from the transmission rack 23, the transmission rack 23 resets under the action of the elastic force of the third elastic piece 28 and drives the transmission gear 24 to rotate in the reverse direction, but due to the characteristic of the one-way bearing 27, the transmission gear 24 cannot drive the threaded pipe 25 to rotate, so that the adjusting block 13 is kept in the current state, and the adjustment of the adjusting block 13 is completed.

Then the bending piece can be bent for the second time by the punching head 3, at the moment, the distance of the sliding block 5 sliding downwards is increased, and the rotating angle of the swinging block 6 is increased, so that the bending piece is bent to a greater extent, resilience can be overcome, after bending is completed, the bending piece can be pushed to the detection groove again, if the bending piece cannot pass through the detection groove, the process is repeated again to increase the distance between the adjusting block 13 and the sliding block 5 until the bending piece can pass through the detection groove, the adjusting block 13 can also be kept at the current position, so that subsequent plates can be processed according to the bending degree, and the control rod 36 is pushed to reset, so that the bending device can be self-adaptive to resilience of the plates.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a high performance bending device of control resilience, includes base (1), support (2), punching press head (3), mould and cylinder (4), support (2) are fixed on base (1), cylinder (4) and support (2) fixed connection, punching press head (3) are fixed in on the piston rod of cylinder (4), the mould sets up on base (1), and the mould is located punching press head (3) below, its characterized in that: the die comprises a sliding block (5) and two swinging blocks (6), the sliding block (5) is connected with a base (1) in a sliding manner, the base (1) is provided with rotating grooves for the swinging blocks (6) to rotate on two sides of the sliding block (5), movable grooves for pushing the swinging blocks (6) to rotate are formed in two sides of the sliding block (5), the base (1) is fixed with a detection block (7), the detection block (7) is provided with a detection groove which is identical to the shape of a qualified bending piece, the base (1) is provided with stepping mechanisms for pushing a plate (10) to pass through the detection groove on two sides of the die, each stepping mechanism comprises a pushing assembly and a driving assembly for driving the pushing assembly to move along a rectangular track, the pushing assembly comprises a fixed plate (8) and a control plate (9), the fixed plate (8) is fixedly connected with a plurality of pushing plates (10) which are arranged at intervals, the fixed plate (8) is connected with the control plate (9) in a sliding manner, an elastic piece (11) is arranged between the fixed plate (8) and the control plate (9), a push rod (8) is connected with a control plate (12), and a sliding mechanism for driving the sliding adjustment block (13) which is arranged between the fixed plate (8) and the base (9), an elastic part II (14) is connected between the adjusting block (13) and the sliding block (5), and the base (1) is provided with a transmission mechanism which utilizes the push rod (12) to slide to drive the adjusting block (13) to slide.

2. The high-performance bending device for controlling springback of claim 1, wherein: the driving assembly comprises a first cam (15), a second cam (16), a driving plate (17), two driving blocks (18) and two driving springs (19), the driving plate (17) is fixedly connected with the control plate (9), the driving plate (17) is perpendicular to the control plate (9), the first cam (15) is connected with the control plate (9) in a propping mode, the second cam (16) is connected with the driving plate (17) in a propping mode, the first cam (15) is fixedly connected with the second cam (16) in a coaxial mode, the first cam (15) is rotationally connected with the base (1) in a propping mode, the second cam (16) is connected with the first cam (15) and the second cam (16) in a propping mode, the driving blocks (18) are connected with the base (1) in a sliding mode, the sliding directions of the two driving blocks (18) are perpendicular to each other, the driving blocks (18) are connected with the fixing plate (8) and the control plate (9) in a propping mode, and the driving springs (19) are connected between the two driving blocks (18) and the base (1) respectively.

3. The high-performance bending device for controlling springback of claim 1, wherein: feedback mechanism includes fixed rack (20), drive gear (21) and slip rack (22), fixed rack (20) and control panel (9) fixed connection, drive gear (21) rotate with fixed plate (8) to be connected, slip rack (22) and fixed plate (8) sliding connection, fixed rack (20) and slip rack (22) all mesh with drive gear (21) mutually, slip rack (22) and push rod (12) fixed connection.

4. The high-performance bending device for controlling springback of claim 1, wherein: drive mechanism includes driving rack (23), drive gear (24), screwed pipe (25), ejecting (26) and one-way bearing (27), one-way bearing (27) and screwed pipe (25) fixed connection, drive gear (24) and one-way bearing (27) fixed connection, driving rack (23) and base (1) sliding connection, and driving rack (23) and drive gear (24) mesh mutually, be provided with elastic component three (28) between driving rack (23) and base (1), driving rack (23) and push rod (12) looks butt, ejecting (26) are worn to establish in screwed pipe (25), and with screwed pipe (25) threaded connection, ejecting (26) and base (1) sliding connection, and ejecting (26) and regulation block (13) butt each other, base (1) is provided with the canceling release mechanical system that drive ejector pin (46) reset.

5. A high performance bending apparatus for controlling springback according to claim 4, wherein: reset mechanism includes wind-up wheel (29), spool (31), clockwork spring, rope (30), ratchet (33), pawl (34) and pressure spring (35), wind-up wheel (29) fixed connection is in screwed pipe (25) outside, spool (31) rotate with base (1) and are connected with the clockwork spring between spool (31) and base (1), the one end and wind-up wheel (29) fixed connection of rope (30), and the other end and spool (31) fixed connection of rope (30), rope (30) winding is on spool (31), ratchet (33) and spool (31) fixed connection, base (1) sliding connection has connecting block (40), pawl (34) rotate with connecting block (40) and are connected, pressure spring (35) are connected between pawl (34) and connecting block (40), pawl (34) and ratchet (33) mesh mutually, base (1) are provided with and are used for driving the gliding control mechanism of connecting block (40).

6. A high performance bending apparatus for controlling springback according to claim 5, wherein: control mechanism includes control lever (36), ejector pad (37), ejector pad two (38) and reset spring (39), control lever (36) and base (1) sliding connection, ejector pad (37) and control lever (36) fixed connection, ejector pad two (38) and connecting block (40) fixed connection, ejector pad one (37) and ejector pad two (38) butt each other, and ejector pad one (37) and ejector pad two (38) all are provided with the same inclined plane of inclination in mutual butt department, reset spring (39) are connected between connecting block (40) and base (1).

7. A high-performance bending apparatus for controlling springback according to claim 1, wherein: all sliding connection has negative casting die (41) between every pushing plate (10), the interior air cavity that has seted up of negative casting die, every negative casting die (41) the air cavity all communicates through connecting pipe (42) each other, every negative casting die (41) all sliding connection has trachea (43), trachea (43) run through negative casting die (41), and trachea (43) have seted up the gas pocket, be provided with reset spring two (45) between trachea (43) and negative casting die (41), trachea (43) fixedly connected with sucking disc (44), the through-hole that is linked together with the slip pipe is seted up to sucking disc (44), negative casting die (41) bottom is provided with ejector pin (46), base (1) is provided with and is used for driving ejector pin (46) oblique boss (32) that upwards slides.

8. An application method of a high-performance bending device for controlling springback is characterized in that: the application method comprises the following steps:

s1: firstly, the adjusting block (13) is reset through a resetting mechanism;

s2: the sheet material is placed on the base (1) and is driven to move above the die by the stepping mechanism;

s3: the stamping head (3) bends the plate under the driving of the cylinder (4);

s4: the stepping mechanism pushes the plate processed in the step S3 to a detection groove of a detection block (7);

s5: after the detection of the step S4, if the plate passes through the detection groove, the bending is finished, and if the plate rebounds and does not pass, the push rod (12) is driven to slide through the feedback mechanism, so that the transmission mechanism drives the adjusting block (13) to slide downwards, the sliding distance of the sliding block (5) is increased, and the plate can be bent excessively;

s6: and returning to the step S3 for restarting.