CN111266461A - Steel shaft stamping and bending die - Google Patents

Abstract

The invention relates to the field of steel shaft machining, in particular to a steel shaft stamping and bending die which comprises a bending die body and a feeding mechanism arranged beside the bending die body, wherein the bending die body comprises an upper die holder, a lower die holder, a first bending inner die, a second bending inner die, four guide pillars and a guide sleeve, the first bending inner die and the second bending inner die are positioned between the upper die holder and the lower die holder, the feeding mechanism comprises a rotating mechanism, a clamping mechanism, a propelling mechanism and a supporting table, and the steel shaft stamping and bending die is convenient to bend a steel shaft under the action of the first bending inner die and the second bending inner die, and can also machine the steel shaft with a larger diameter. The steel shaft is conveyed through the rotating mechanism, the clamping mechanism and the pushing mechanism, and the first bending inner die and the second bending inner die bend the steel shaft, so that the bending shapes are various and the steel shaft can be bent into a complex shape.

Description

Steel shaft stamping and bending die

Technical Field

The invention relates to the field of steel shaft processing, in particular to a steel shaft stamping and bending die.

Background

The mechanical arm is often used for clamping a round shaft in the traditional steel shaft bending process, the steel shaft is bent on the two rotating wheels through the mechanical arm to obtain the steel shaft with any shape, and the steel shaft is processed through the mechanical arm and only can be processed with a small diameter.

Chinese patent application No.: CN 201810953996.6; the invention discloses a working method of a bending die with a springback compensation function, which has the beneficial effects that the excessive compensation of a bending part of a workpiece can be prevented, and meanwhile, the compensation bending angle can be adjusted according to the material of the workpiece, so that the application range of the bending die is wider.

Chinese patent application No.: CN 201910286737.7; discloses a bending die and a bending process of a plate, and solves the problem that a bone fracture plate is inconvenient to bend.

The two inventions have the following disadvantages:

1. although the two invention solves the problems of excessive compensation and inconvenient bending of the bending part of the plate, when the steel shaft is bent, the steel shaft is not convenient to clamp and bend due to the shape of the steel shaft, so that the steel shaft is difficult to process by equipment.

2. The two bending devices can only bend the workpiece once, and the workpiece is single in bending shape and difficult to bend into a complex shape.

Disclosure of Invention

The invention aims to provide a steel shaft stamping and bending die.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a steel shaft stamping bending die, including the mould body of bending and install the feed mechanism next door at the mould body of bending, the mould body of bending includes the upper die base, the die holder, first bending centre form, the second bending centre form, four guide pillars and guide pin bushing, the die holder is placed in punching machine inboard bottom, the upper die base is located the top of die holder, four guide pins all fixedly mounted are in four sides of upper die base, four guide pillars are equallyd divide and are distinguished in four guide pin bushing coaxial line settings, and four guide pillars all fixedly mounted in four sides of die holder, first bending centre form and second bending centre form are located between upper die base and the die holder, and first bending centre form is located one side that the second bending centre form is close to feed mechanism, feed mechanism includes rotary mechanism, chucking mechanism, advancing mechanism and brace table, rotary mechanism, chucking mechanism and advancing mechanism all fixedly mounted on the brace table, the clamping mechanism and the pushing mechanism are sequentially distributed along the length direction of the supporting table, and the rotating mechanism is located on one side, close to the first bending inner die, of the clamping mechanism.

Further, the first bending inner die comprises a lower baffle seat, an upper die base, a pressing block, a bending wheel, two first guide pillars and first springs, the lower baffle seat is fixedly arranged at the top of the lower die base, a bending hole for clamping a steel shaft is formed in the lower baffle seat, the upper die base is arranged right above the lower baffle seat, the pressing hole and the upper die base are fixedly connected, the pressing block is arranged right below the upper die base, the two first guide pillars are fixedly arranged at the top of the pressing block, two strip-shaped avoiding notches are formed in two sides of the upper die base, the tops of the two first guide pillars penetrate through the bottom of the upper die base and are arranged in the strip-shaped avoiding notches, the two first guide pillars are slidably connected with the upper die base through two limiting rings, the two limiting rings are fixedly arranged at the tops of the outer edges of the first guide pillars, the two first springs are respectively sleeved on the two first guide pillars, and two ends of the two first guide pillars are respectively abutted against, the hole that compresses tightly that is used for compressing tightly the steel axle is offered to the bottom of compact heap, compress tightly hole and the setting of hole coaxial line of bending, and the diameter that compresses tightly the hole and bend the hole equals with the steel axle diameter, the wheel of bending is located one side that the lower fender seat is close to the centre form of second bending, the wheel of bending includes first pinch roller, first pivot, two first fender rings and collateral branch fagging, two collateral branch fagging fixed mounting are in the bottom of upper die base, and two collateral branch faggings are mutual symmetry setting, first pinch roller is located between two collateral branch faggings, first pivot is located first pinch roller, and two collateral branch faggings are passed respectively at the both ends of first pivot, two collateral branch faggings and first pivot fixed connection, two first fender rings are located the both sides of first pinch roller respectively, and the both sides of every first fender ring all contradict with first pinch roller and collateral branch fa.

Further, the second bending inner die comprises a bending support seat, a second bending wheel, a trapezoidal slide seat, a downward pressing push plate, an abutting spring, a guide slide plate, a second guide pillar, two second baffle rings and guide bars, the downward pressing push plate is fixedly arranged at the top of the upper die base, the trapezoidal slide seat is positioned under the downward pressing push plate, the two guide bars are positioned at two sides of the trapezoidal slide seat, the inner sides of the two guide bars are attached to two sides of the trapezoidal slide seat, the length direction of the two guide bars is perpendicular to the conveying direction of the steel shaft, one end of the second guide pillar is fixedly arranged on the trapezoidal slide seat, the guide slide plate is fixedly arranged at the top of the lower die base, the other end of the second guide pillar penetrates through the guide slide seat, a guide hole for the second guide pillar to slide is formed in the guide slide plate, the abutting spring is sleeved on the second guide pillar, two ends of the abutting spring are respectively abutted against the guide bar and the second guide, the second bending wheel sleeve is arranged on the second rotating shaft, the two second retaining rings are respectively located on two sides of the second bending wheel, the inner sides of the two second retaining rings are attached to the second bending wheel, the two second retaining rings are fixedly connected with the second rotating shaft, and the bending supporting seat is located on one side, close to the first bending inner die, of the trapezoidal sliding seat.

Further, the bending support seat comprises a connecting plate, a support block, a slide block, two reinforcing ribs, third guide pillars and a collision spring, the support plate is fixedly arranged at the top of the lower die holder, the connecting plate is fixedly arranged at the top of the support plate, two ends of the two reinforcing ribs are respectively and fixedly connected with the connecting plate and the support plate, the support block is fixedly arranged at the bottom of the connecting plate, a strip-shaped avoidance notch is formed in the bottom of the support block, a semicircular notch is formed in one side, close to the support plate, of the support block, the slide block is positioned under the semicircular notch, an arc-shaped notch which is axially arranged with the semicircular notch is formed in the slide block, the diameter of the arc-shaped notch is equal to that of the semicircular notch, one end of each of the two third guide pillars is fixedly arranged at one side, far away, and a nut is fixedly arranged on each third guide pillar, one side of the nut is abutted to the supporting block, the two abutting springs are respectively sleeved on the two third guide pillars, and two ends of the two abutting springs are respectively abutted to the sliding block and the supporting block.

Further, the distance from the lower baffle seat to the top of the lower die seat is greater than the distance from one side of the upper pressing block close to the second bending inner die to one side of the supporting block far away from the first bending inner die.

Further, the rotating mechanism comprises a large gear, a small gear, a servo motor, a support frame plate, a heightening plate, a sleeve, a nut, a baffle ring, two pressing cylinders and a limiting ring, the support frame plate is fixedly arranged on the support table, a through hole for the sleeve to pass through is formed in the top of the support frame plate, the limiting ring is fixedly arranged on one side, close to the first bending inner die, of the sleeve, the large gear is sleeved on the sleeve, an external thread is formed in the outer edge of the other side of the sleeve, the nut is fixedly arranged on the sleeve, the nut is attached to the support frame plate, the two heightening plates are fixedly arranged on the large gear, the two pressing cylinders are respectively and fixedly arranged on the two heightening plates, the two clamping blocks are respectively and fixedly arranged on the output ends of the two pressing cylinders, arc-shaped notches for wrapping the steel shaft are formed in the two, and the pinion and the bull gear are meshed with each other, the servo motor is fixedly installed on the support frame plate, the output end of the servo motor penetrates through the support frame plate and is fixedly connected with the pinion, and the inner diameter of the sleeve is equal to the diameter of the steel shaft.

Further, the clamping mechanism comprises a first transmission box, a first clamping device, a first abutting spring, a second abutting spring, a first abutting plate, a second arc plate and a first gear plate, the first transmission box is fixedly arranged at the top of the supporting table through a base, the first gear plate is positioned in the first transmission box, the first transmission box is in transmission connection with the first gear plate, the first clamping device is fixedly arranged at the outer side of the first transmission box, the bottom of the second arc plate is fixedly connected with the top of the first gear plate, the first abutting plate and the second abutting plate are fixedly arranged on one side of the first gear plate without teeth, the first abutting spring and the second abutting spring are fixedly arranged at the top and the bottom of the inner side of the first transmission box, the first transmission box comprises a first containing box, a first gear, a second gear, a guide sleeve and two limit sleeves, the first containing box is fixedly arranged at the top of the base, the first gear is positioned on the inner side of the first containing box, the second gear is positioned on the outer side of the first containing box, the connecting shaft penetrates through the second gear and the first gear, the connecting shaft and the first gear are both fixedly connected with the second gear, two limit sleeves are both fixedly arranged on the connecting shaft, the inner sides of the two limit sleeves are attached to the outer side of the first containing box, the first gear is meshed with the first gear plate, the guide sleeve is fixedly arranged on the top of the first containing box and is in sliding connection with the first gear plate, the second gear is in transmission connection with the propelling mechanism, the first gear plate is positioned on one side of the first gear, which is far away from the first bending inner die, the toothed side of the first gear plate is close to the first gear, the distance from the top of the first abutting plate to the bottom of the first gear is smaller than the distance from the center of the first gear to the top of the inner side of the first containing box, the distance from the bottom of the second abutting plate to the top of the first gear plate is smaller than the distance from the center of the, first chucking ware includes head rod and first arc board, and first arc board is located the top of second arc board, and first arc board and second arc board coaxial line set up, and the diameter of first arc board equals with the diameter of second arc board, and the both ends of head rod respectively in first arc board and first holding box fixed connection.

Furthermore, the propulsion mechanism comprises a driving component, a second transmission case, a second clamping device, a first guide rail, a first guide slide seat, a third arc plate and a second gear plate, the first guide rail is fixedly arranged at the top of the support table, the first guide slide seat is arranged on the first guide rail, the second transmission case is fixedly arranged at the top of the first guide slide seat, the second clamping device is fixedly arranged on the second transmission case, the second clamping device and the first clamping device are identical in structure, the second transmission case and the first transmission case are identical in structure, the second gear plate is arranged in the second transmission case and is meshed with a gear in the second transmission case, the second gear plate is arranged at one side, close to the first bending internal mold, of the gear in the second transmission case, the third arc plate is fixedly arranged at the top of the second gear plate, the length of the second gear plate is larger than that of the first gear plate, the driving component is fixedly arranged at the top of the support table, and the driving components are all meshed with a second gear on the second transmission case and a second gear on the first transmission case.

Further, drive assembly includes the rack, electric putter, the push pedal, the slide is led to second guide rail and two seconds, increase seat fixed mounting at the top of brace table, second guide rail fixed mounting is at the top of increasing the seat, two seconds are led the slide and are all installed on the second guide rail, the rack is located the top of two seconds and are led the slide, and the bottom fixed connection of top and rack of slide is led to the second, the rack divide equally do not with the first transmission case meshing on the second gear on the first transmission case and the second transmission case, push pedal fixed mounting is in one side that first bending centre form was kept away from to the rack, electric putter passes through mounting panel fixed mounting at the top of brace table, and electric putter's output and push pedal fixed connection.

The invention has the beneficial effects that: this steel axle punching press mould of bending, through the effect of the centre form of first bending centre form and the second centre form of bending, and then be convenient for bend the steel axle, and use the punching machine to bend the steel axle, also can process the great steel axle of diameter. The steel shaft is conveyed through the rotating mechanism, the clamping mechanism and the pushing mechanism, and the first bending inner die and the second bending inner die bend the steel shaft, so that the bending shapes are various and the steel shaft can be bent into a complex shape.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a partial perspective view of the first embodiment of the present invention;

fig. 3 is an exploded perspective view of the first bending inner die;

fig. 4 is a schematic perspective view of a second bending inner die;

FIG. 5 is a schematic perspective view of a bending support seat;

FIG. 6 is a partial perspective view of the second embodiment of the present invention;

fig. 7 is a first schematic perspective view of the rotating mechanism;

fig. 8 is a schematic perspective view of the second rotating mechanism;

FIG. 9 is an exploded perspective view of the clamping mechanism;

FIG. 10 is a perspective view of the propulsion mechanism;

FIG. 11 is a partial perspective view of a first propulsion mechanism;

FIG. 12 is a partial perspective view of the second pushing mechanism;

FIG. 13 is a schematic perspective view of a machined workpiece according to the present invention;

in the figure:

1. an upper die holder;

2. a lower die holder;

3. a guide post;

4. a guide sleeve;

5. a first bending inner die; 5a, a lower baffle seat; 5a1, bending holes; 5b, an upper die holder; 5c, a pressing block; 5c1, a compaction hole 5j and a first pressing wheel; 5d, side supporting plates; 5e, a first rotating shaft; 5f, a first baffle ring; 5h, a first spring; 5i, a first guide pillar;

6. a second bending inner die; 6a, bending the supporting seat; 6a1, connecting plate; 6a2, support plate; 6a3, reinforcing ribs; 6a4, support block; 6a5, slider; 6a6, third guide post; 6a7, abutting spring; 6b, a second bending wheel; 6c, a second baffle ring; 6d, a trapezoidal sliding seat; 6e, pressing the push plate downwards; 6f, a second rotating shaft; 6g, abutting against a spring; 6h, a guide strip; 6i, a guide sliding plate; 6k, a second guide pillar;

7. a rotation mechanism; 7a, a gearwheel; 7b, a pinion; 7c, a servo motor; 7d, supporting the frame plate; 7e, heightening plates; 7f, a fixture block; 7h, sleeving a sleeve; 7i, a nut; 7g, a baffle ring; 7k, a pressing cylinder; 7j, a limiting ring;

8. a chucking mechanism; 8a, a first transmission case; 8a1, a first containment box; 8a2, a first gear; 8a3, second gear; 8a4, connecting shaft; 8a5, a stop collar; 8a6, guide sleeve; 8b, a first clamping device; 8b1, first connecting rod; 8b2, a first arc plate; 8c, a first resisting spring; 8d, a second resisting spring; 8e, a first abutting plate; 8f, a second resisting plate; 8h, a second arc plate; 8i, a first gear plate;

9. a propulsion mechanism; 9a, a driving component; 9a1, rack; 9a2, electric push rod; 9a3, mounting plate; 9a4, push plate; 9a5, second guide rail; 9a6, a second guide carriage; 9a7, a booster seat; 9b, a second transmission case; 9c, a second fastener; 9d, a first guide rail; 9e, a first guide slide seat; 9f, a third arc plate; 9h, a second gear plate.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.

Referring to fig. 1 to 13, a steel shaft stamping and bending die comprises a bending die body and a feeding mechanism installed beside the bending die body, wherein the bending die body comprises an upper die holder 1, a lower die holder 2, a first bending inner die 5, a second bending inner die 6, four guide pillars 3 and guide sleeves 4, the lower die holder 2 is placed at the bottom of the inner side of a stamping machine, the upper die holder 1 is positioned at the top of the lower die holder 2, the four guide sleeves 4 are all fixedly installed at the four sides of the upper die holder 1, the four guide pillars 3 are respectively arranged on the same axis of the four guide sleeves 4, the four guide pillars 3 are all fixedly installed at the four sides of the lower die holder 2, the first bending inner die 5 and the second bending inner die 6 are positioned between the upper die holder 1 and the lower die holder 2, the first bending inner die 5 is positioned at one side of the second bending inner die 6 close to the feeding mechanism, the feeding mechanism comprises a, the rotating mechanism 7, the clamping mechanism 8 and the pushing mechanism 9 are all fixedly mounted on the supporting platform, the rotating mechanism 7, the clamping mechanism 8 and the pushing mechanism 9 are sequentially distributed along the length direction of the supporting platform, and the rotating mechanism 7 is located on one side, close to the first bending inner die 5, of the clamping mechanism 8.

The first bending inner die 5 comprises a lower baffle seat 5a, an upper die seat 5b, a pressing block 5c, a bending wheel, two first guide pillars 5i and a first spring 5h, the lower baffle seat 5a is fixedly arranged at the top of the lower die seat 2, a bending hole 5a1 for clamping a steel shaft is formed in the lower baffle seat 5a, the upper die seat 5b is positioned right above the lower baffle seat 5a, the pressing hole 5c1 is fixedly connected with the upper die seat 1, the pressing block 5c is positioned right below the upper die seat 5b, the two first guide pillars 5i are fixedly arranged at the top of the pressing block 5c, two strip-shaped avoidance notches are formed in two sides of the upper die seat 5b, the tops of the two first guide pillars 5i penetrate through the bottom of the upper die seat 5b and are positioned in the strip-shaped avoidance notches, the two first guide pillars 5i are slidably connected with the upper die seat 5b through two limiting rings, the two limiting rings are fixedly arranged at the top of the outer edge of the first guide, two first springs 5h are respectively sleeved on two first guide posts 5i, two ends of the two first guide posts 5i are respectively abutted against a pressing block 5c and an upper die base 5b, a pressing hole 5c1 for pressing a steel shaft is formed in the bottom of the pressing block 5c, the pressing hole 5c1 and a bending hole 5a1 are coaxially arranged, the diameter of the pressing hole 5c1 and the diameter of the bending hole 5a1 are equal to the diameter of the steel shaft, a bending wheel is arranged on one side of the lower baffle base 5a close to a second bending inner die 6 and comprises a first pressing wheel 5j, a first rotating shaft 5e, two first baffle rings 5f and side support plates 5d, the two side support plates 5d are fixedly arranged at the bottom of the upper die base 1 and are symmetrically arranged, the first pressing wheel 5j is arranged between the two side support plates 5d, the first rotating shaft 5e is arranged in the first pressing wheel 5j, and two ends of the first rotating shaft 5e respectively penetrate through the two side support plates 5d, two side backup pads 5d and first pivot 5e fixed connection, two first fender rings 5f are located the both sides of first pinch roller 5j respectively, and the both sides of every first fender ring 5f all contradict with first pinch roller 5j and side backup pad 5 d. When upper die base 1 pushes down, and then make upper die base 1 drive first pinch roller 5j and upper die base 5b and push down, at the in-process of pushing down, at first compress tightly the steel shaft between compressing tightly hole 5c1 and bending hole 5a1 through compact heap 5c, the continuous pushing down of rethread upper die base 5b, first spring 5h compresses, and then increase the pressure of compact heap 5c to the steel shaft, and at the in-process of pushing down, first pinch roller 5j will be in the steel shaft contact, and then apply decurrent pressure to the steel shaft, thereby bend the steel shaft.

The second bending inner die 6 comprises a bending support seat 6a, a second bending wheel 6b, a trapezoidal sliding seat 6d, a downward pressing push plate 6e, a butting spring 6g, a guide sliding plate 6i, a second guide post 6k, two second stop rings 6c and guide strips 6h, wherein the downward pressing push plate 6e is fixedly arranged at the top of the upper die base 1, the trapezoidal sliding seat 6d is positioned right below the downward pressing push plate 6e, the two guide strips 6h are positioned at two sides of the trapezoidal sliding seat 6d, the inner sides of the two guide strips 6h are attached to two sides of the trapezoidal sliding seat 6d, the length direction of the two guide strips 6h is vertical to the conveying direction of the steel shaft, one end of the second guide post 6k is fixedly arranged on the trapezoidal sliding seat 6d, the guide sliding plate 6i is fixedly arranged at the top of the lower die base 2, the other end of the second guide post 6k penetrates through the guide sliding seat 6i, a guide hole for the second guide post 6k, the cover of conflict spring 6g is established on second guide pillar 6k, and the both ends of conflict spring 6g are contradicted in gib block 6h and second guide pillar 6k respectively, second pivot 6f is vertical the top of installing at trapezoidal slide 6d, second wheel 6b cover of buckling is established on second pivot 6f, and two second fender rings 6c are located the both sides of second wheel 6b of buckling respectively, the inboard of two second fender rings 6c and the laminating of second wheel 6b of buckling, and two second fender rings 6c and second pivot 6f fixed connection, the supporting seat 6a of bending is located one side that trapezoidal slide 6d is close to first mould 5 of buckling. When the steel axle passes the supporting seat 6a of bending, push pedal 6e pushes down through the drive of upper die base 1, and then make the bottom of pushing pedal 6e and trapezoidal slide 6 d's inclined plane contact down, and then along with the in-process that pushes down push pedal 6e and promote downwards, and then make push pedal 6e push down trapezoidal slide 6d and remove towards leading slide 6i, make conflict spring 6g compress, and then make the second at trapezoidal slide 6d top of installing bend wheel 6b and bend the steel axle.

The bending support seat 6a comprises a connecting plate 6a1, a support plate 6a2, a support block 6a4, a slider 6a5, two reinforcing ribs 6a3, a third guide post 6a6 and an abutting spring 6a7, the support plate 6a2 is fixedly mounted at the top of the lower die holder 2, the connecting plate 6a1 is fixedly mounted at the top of the support plate 6a2, two ends of the two reinforcing ribs 6a3 are fixedly connected with the connecting plate 6a1 and the support plate 6a2 respectively, the support block 6a4 is fixedly mounted at the bottom of the connecting plate 6a1, a strip-shaped avoiding notch is formed at the bottom of the support block 6a4, a semicircular notch is formed at one side of the support block 6a4 close to the support plate 6a2, the slider 6a5 is located right below the semicircular notch, an arc notch for providing axial arrangement with the semicircular notch is formed on the slider 6a5, the diameter of the arc notch is equal to that of the semicircular notch, one end of the two third guide posts 6a, the other ends of the two third guide pillars 6a6 penetrate through the strip-shaped avoidance gap and the supporting block 6a4, external threads are formed in the outer edge of the top of the other end of each of the two third guide pillars 6a6, a nut is fixedly arranged on each of the third guide pillars 6a6, one side of each nut is abutted against the supporting block 6a4, the two abutting springs 6a7 are respectively sleeved on the two third guide pillars 6a6, and two ends of each abutting spring 6a7 are respectively abutted against the sliding block 6a5 and the supporting block 6a 4. When the steel shaft passes through supporting shoe 6a4, push down through upper die base 1, and then bend second bending wheel 6b, after the steel shaft was bent, because the distance of push pedal 6e bottom to upper die base 1 bottom of pushing down is greater than the distance of first pinch roller 5j bottom to upper die base 1 bottom, and then make second bending centre form 6 bend the steel shaft earlier than first bending centre form 5, and then make the steel shaft by second bending centre form 6 back of bending, because the power of bending of first bending centre form 5 to the steel shaft, make the steel shaft downwarping, and then make the steel shaft contradict slider 6a5, and then will contradict spring 6a7 and compress, thereby make the steel shaft push slider 6a5 in the strip-shaped breach of supporting shoe 6a 4.

The distance from the lower baffle seat 5a to the top of the lower die seat 2 is greater than the distance from the side of the upper pressing block 5c close to the second bending inner die 6 to the side of the supporting block 6a4 far away from the first bending inner die 5. The distance from the lower blocking seat 5a to the top of the lower die holder 2 is greater than the distance from one side of the upper pressing block 5c close to the second bending inner die 6 to one side of the supporting block 6a4 away from the first bending inner die 5, so that the steel shaft is prevented from being in a bending process, the bottom of the steel shaft is in contact with the top of the lower die holder 2, after the steel shaft is bent once, the distance from the lower blocking seat 5a to the top of the lower die holder 2 is greater than the distance from one side of the upper pressing block 5c close to the second bending inner die 6 to one side of the supporting block 6a4 away from the first bending inner die 5 plus the length of the first bending part.

The rotating mechanism 7 comprises a large gear 7a, a small gear 7b, a servo motor 7c, a support frame plate 7d, heightening plates 7e, a sleeve 7h, a nut 7i, a baffle ring 7g, two pressing cylinders 7k and a limiting ring 7j, wherein the support frame plate 7d is fixedly arranged on a support table, a through hole for the sleeve 7h to pass through is formed in the top of the support frame plate 7d, the limiting ring 7j is fixedly arranged on one side, close to the first bending inner die 5, of the sleeve 7h, the large gear 7a is sleeved on the sleeve 7h, an external thread is formed in the outer edge of the other side of the sleeve 7h, the nut 7i is fixedly arranged on the sleeve 7h, the nut 7i is attached to the support frame plate 7d, the two heightening plates 7e are fixedly arranged on the large gear 7a, the two pressing cylinders 7k are respectively and fixedly arranged on the two heightening plates 7e, the two clamping blocks, and the two fixture blocks 7f are provided with arc-shaped gaps for wrapping the steel shaft, the arc-shaped gaps on the two fixture blocks 7f are coaxially arranged, the small gear 7b is positioned under the large gear 7a, the small gear 7b is meshed with the large gear 7a, the servo motor 7c is fixedly installed on the support frame plate 7d, the output end of the servo motor 7c penetrates through the support frame plate 7d and is fixedly connected with the small gear 7b, and the inner diameter of the sleeve 7h is equal to the diameter of the steel shaft. When the steel shaft needs to rotate, the output end of the pressing cylinder 7k drives the clamping block 7f to work by starting the pressing cylinder 7k, the steel shaft penetrating through the sleeve 7h is clamped, the servo motor 7c is started, the servo motor 7c drives the pinion 7b to rotate, the pinion 7b is meshed with the bull gear 7a, and the pinion 7b drives the bull gear 7a to rotate, so that the steel shaft clamped by the pressing cylinder 7k is driven to rotate.

The clamping mechanism 8 comprises a first transmission box 8a, a first clamping device 8b, a first abutting spring 8c, a second abutting spring 8d, a first abutting plate 8e, a second abutting plate 8f, a second arc plate 8h and a first gear plate 8i, the first transmission box 8a is fixedly arranged at the top of the supporting table through a base, the first gear plate 8i is positioned in the first transmission box 8a, the first transmission box 8a is in transmission connection with the first gear plate 8i, the first clamping device 8b is fixedly arranged at the outer side of the first transmission box 8a, the bottom of the second arc plate 8h is fixedly connected with the top of the first gear plate 8i, the first abutting plate 8e and the second abutting plate 8f are fixedly arranged on the non-toothed side of the first gear plate 8i, the first abutting spring 8c and the second abutting spring 8d are fixedly arranged at the top and the bottom of the inner side of the first transmission box 8a, and the first transmission box 8a comprises a first accommodating box 8a1, A first gear 8a2, a second gear 8a3, a connecting shaft 8a4, a guide sleeve 8a6 and two limit sleeves 8a5, wherein the first accommodating box 8a1 is fixedly mounted on the top of the base, the first gear 8a2 is positioned on the inner side of the first accommodating box 8a1, the second gear 8a3 is positioned on the outer side of the first accommodating box 8a1, the connecting shaft 8a4 passes through the second gear 8a3 and the first gear 8a2, the connecting shaft 8a 9 and the first gear 8a2 are fixedly connected with the second gear 8a3, the two limit sleeves 8a5 are fixedly mounted on the connecting shaft 8a4, the inner sides of the two limit sleeves 8a5 are attached to the outer side of the first accommodating box 8a1, the first gear 8a2 is engaged with the first gear plate 8i, the guide sleeve 8a6 is fixedly mounted on the top of the first accommodating box 8a6, the guide sleeve 8a6 is connected with the first gear transmitting plate 8a 368 i, the first gear transmitting mechanism is positioned on one side away from the first folding gear 368 a 368 i, and the toothed side of the first gear plate 8i is close to the first gear 8a2, the distance from the top of the first abutting plate 8e to the tooth bottom of the first gear plate 8i is less than the distance from the center of the first gear 8a2 to the top of the inner side of the first accommodating box 8a1, the distance from the bottom of the second abutting plate 8f to the tooth top of the first gear plate 8i is less than the distance from the center of the first gear 8a2 to the bottom of the inner side of the first accommodating box 8a1, the first clamping device 8b comprises a first connecting rod 8b1 and a first arc plate 8b2, the first arc plate 8b2 is located at the top of the second arc plate 8h, the first arc plate 8b2 and the second arc plate 8h are coaxially arranged, the diameter of the first arc plate 8b2 is equal to the diameter of the second arc plate 8h, and two ends of the first connecting rod 8b1 are respectively and fixedly connected to the first arc plate 8b2 and the first accommodating box 8a 1. When the pushing mechanism 9 drives the steel shaft to move forward, so as to drive the second gear 8a3 to rotate clockwise, and then the second gear 8a3 is connected with the first gear 8a2 through the connecting shaft 8a4, so as to drive the first gear 8a2 to rotate, and then the first gear 8a2 is meshed with the first gear plate 8i, so as to drive the first gear plate 8i to move downward, so that the second arc plate 8h is separated from the first arc plate 8b2, because the distance from the bottom of the second abutting plate 8f to the top of the first gear plate 8i is smaller than the distance from the center of the first gear 8a2 to the bottom of the inner side of the first accommodating box 8295, so that the teeth of the second abutting plate 8a6 are separated from the teeth of the first gear 8a2 and are not meshed with each other, and further have an upward pushing force on the second abutting plate 8f through the action of the second abutting spring 8d, when the pushing mechanism 9 moves backwards, the first gear plate 8i is pushed by the elastic force of the second abutting spring 8d, so that the first gear plate 8i is meshed with the first gear 8a2, the first gear plate 8i moves upwards, when the second arc plate 8h is moved to contact with the first arc plate 8b2, the steel shaft is clamped, the teeth on the guide sleeve 8a6 are separated from the teeth on the first gear 8a2 and are not meshed with each other, and the first gear plate 8i can be meshed with the first gear 8a2 again under the action of the first abutting spring 8c, so that the steel shaft moves forwards when the pushing mechanism 9 is driven by the pushing mechanism 9.

The propulsion mechanism 9 comprises a driving component 9a, a second transmission case 9b, a second clamping device 9c, a first guide rail 9d, a first guide slide seat 9e, a third arc plate 9f and a second gear plate 9h, wherein the first guide rail 9d is fixedly arranged at the top of the support table, the first guide slide seat 9e is arranged on the first guide rail 9d, the second transmission case 9b is fixedly arranged at the top of the first guide slide seat 9e, the second clamping device 9c is fixedly arranged on the second transmission case 9b, the second clamping device 9c is identical to the first clamping device 8b in structure, the second transmission case 9b is identical to the first transmission case 8a in structure, the second gear plate 9h is arranged in the second transmission case 9b, the second gear plate 9h is meshed with a gear in the second transmission case 9b, the second gear plate 9h is arranged at one side, close to the first bending bend 5, of the second transmission case 9b, the third arc plate 9f is fixedly arranged at the top of the second gear plate 9h, the second gear plate 9h has a length greater than that of the first gear plate 8i, the driving assembly 9a is fixedly mounted on the top of the support table, and the driving assemblies 9a are engaged with the second gear 8a3 on the second transmission case 9b and the second gear 8a3 on the first transmission case 8 a. When the top of the third arc plate 9f contacts with the second clamping device 9c, the gear on the second transmission case 9b is still meshed with the second gear plate 9h, and the bottom of the second gear plate 9h contacts with the bottom of the second transmission case 9b, the gear in the second transmission case 9b is still meshed with the second gear plate 9h, after the driving component 9a is started, the driving component 9a drives the second gear 8a3 on the second transmission case 9b to rotate, the second gear 8a3 on the second transmission case 9b is further meshed with the second gear plate 9h, the second gear plate 9h moves slowly upwards, the third arc plate 9f clamps the steel shaft, and the driving component 9a drives the second gear 8a3 on the first transmission case 8a to mesh when the steel shaft is just started to move by the pushing mechanism 9, so that chucking mechanism 8 loosens the steel axle, and rethread drive assembly 9a continues work, when the bottom of second gear board 9h and the bottom contact of second transmission case 9b, the gear in second transmission case 9b still with the meshing of second gear board 9h, when the appearance that takes place the latch appears, and then turn into drive assembly 9a and promote the motion of second transmission case 9b, and play the effect of direction through the motion of first slide 9e of leading and first guide rail 9d to second transmission case 9 b.

The driving assembly 9a comprises a rack 9a1, an electric push rod 9a2, a push plate 9a4, a second guide rail 9a5 and two second guide sliders 9a6, wherein the heightening seat 9a7 is fixedly arranged on the top of the supporting table, the second guide rail 9a5 is fixedly arranged on the top of the heightening seat 9a7, the two second guide sliders 9a6 are both arranged on the second guide rail 9a5, the rack 9a1 is positioned on the top of the two second guide sliders 9a6, the top of the second guide slide 9a6 is fixedly connected with the bottom of the rack 9a1, the rack 9a1 is respectively engaged with the second gear 8a3 on the first transmission case 8a and the first transmission case 8a on the second transmission case 9b, the push plate 9a4 is fixedly installed on one side of the rack 9a1 far away from the first bending inner die 5, the electric push rod 9a2 is fixedly installed on the top of the support table through the installation plate 9a3, and the output end of the electric push rod 9a2 is fixedly connected with the push plate 9a 4. The rack 9a1 is pushed to move by the electric push rod 9a2, so that the rack 9a1 is meshed with the second gear 8a3 on the first transmission box 8a and the second gear 8a3 on the second transmission box 9b, and the movement of the rack 9a1 is guided by the second guide slide 9a6 and the second guide rail 9a 5.

The working principle is as follows: when the steel shaft needs to be bent, firstly, a worker sequentially penetrates the top of the steel shaft through the pushing mechanism 9, the clamping mechanism 8 and the rotating mechanism 7, the steel shaft is clamped between the first arc plate 8b2 and the second arc plate 8h through the clamping mechanism 8, after the electric push rod 9a2 is started, the electric push rod 9a2 is further pushed forward to drive the rack 9a1, further, the rack 9a1 is meshed with the second gear 8a3 on the first transmission box 8a and the second gear 8a3 on the second transmission box 9b, so that the second gear plate 9h moves slowly and upwards, the third arc plate 9f clamps the steel shaft, the steel shaft is driven to move by the pushing mechanism 9, meanwhile, the driving assembly 9a drives the second gear 8a3 on the first transmission box 8a to carry out meshing motion, further, the second gear 8a3 is driven to rotate clockwise, and then the second gear 8a3 is connected with the first gear 2 through the connecting shaft 8a4, further driving the first gear 8a2 to rotate, then meshing the first gear 8a2 with the first gear plate 8i to drive the first gear plate 8i to move downwards, so that the second arc plate 8h is separated from the first arc plate 8b2, the clamping mechanism 8 does not clamp the steel shaft, then continuing to work through the electric push rod 9a2, when the bottom of the second gear plate 9h contacts with the bottom of the second transmission case 9b, the gear in the second transmission case 9b is still meshed with the second gear plate 9h, the appearance of the latch appears, and then the latch is converted into the electric push rod 9a2 to push the second transmission case 9b to move, so that the electric push rod 9a2 drives the steel shaft to advance for a set distance, when the pushing mechanism 9 moves to the position, a signal is transmitted to the controller, the controller controls the punching machine to press downwards, so that the first pressing wheel 5j on the inner die 5 of the first bending machine presses the steel shaft for the first time, after the steel shaft is bent, the electric push rod 9a2 on the pushing mechanism 9 of the controller is used for working, the steel shaft is pushed forwards, the pushing mechanism 9 is controlled to retreat to a certain distance through the controller, the steel shaft of the pushing mechanism 9 is loosened, the clamping mechanism 8 does not clamp the steel shaft in the distance, the controller is used for controlling the pressing cylinder 7k to start, the output end of the pressing cylinder 7k drives the clamping block 7f to work, the steel shaft penetrating through the sleeve 7h is clamped, the servo motor 7c is started, the servo motor 7c drives the pinion 7b to rotate, the pinion 7b and the gearwheel 7a are meshed with each other, the pinion 7b drives the gearwheel 7a to rotate, the steel shaft clamped by the pressing cylinder 7k is driven to rotate, and the controller is used for controlling the electric push rod 9a2 to work, the clamping after the rotation is pushed, so that the bending supporting seat 6a on the second bending internal mold 6 is avoided, the rotating mechanism 7 is started through the rotation, the steel shaft is rotated and clamped, the punching machine is started through the controller, and the second bending internal mold 6 and the first bending internal mold 5 bend the steel shaft for the second time.

Claims (9)

1. A steel shaft stamping and bending die is characterized by comprising a bending die body and a feeding mechanism arranged beside the bending die body, wherein the bending die body comprises an upper die holder (1), a lower die holder (2), a first bending inner die (5), a second bending inner die (6), four guide pillars (3) and guide sleeves (4), the lower die holder (2) is arranged at the bottom of the inner side of a stamping machine, the upper die holder (1) is positioned at the top of the lower die holder (2), the four guide sleeves (4) are all fixedly arranged at the four sides of the upper die holder (1), the four guide pillars (3) are respectively arranged on the same axis of the four guide sleeves (4), the four guide pillars (3) are all fixedly arranged at the four sides of the lower die holder (2), the first bending inner die (5) and the second bending inner die (6) are positioned between the upper die holder (1) and the lower die holder (2), and the first bending inner die (5) is positioned at one side of the second bending inner die (6) close, the feeding mechanism comprises a rotating mechanism (7), a clamping mechanism (8), a propelling mechanism (9) and a supporting table, wherein the rotating mechanism (7), the clamping mechanism (8) and the propelling mechanism (9) are fixedly mounted on the supporting table, the rotating mechanism (7), the clamping mechanism (8) and the propelling mechanism (9) are distributed in sequence along the length direction of the supporting table, and the rotating mechanism (7) is located on one side, close to the first bending inner die (5), of the clamping mechanism (8).

2. The steel shaft stamping and bending die according to claim 1, wherein the first inner bending die (5) comprises a lower baffle seat (5 a), an upper die seat (5 b), a pressing block (5 c), a bending wheel, two first guide pillars (5 i) and a first spring (5 h), the lower baffle seat (5 a) is fixedly installed at the top of the lower die seat (2), a bending hole (5 a 1) for clamping the steel shaft is formed in the lower baffle seat (5 a), the upper die seat (5 b) is positioned right above the lower baffle seat (5 a), the pressing hole (5 c 1) and the upper die seat (1) are fixedly connected, the pressing block (5 c) is positioned right below the upper die seat (5 b), the two first guide pillars (5 i) are fixedly installed at the top of the pressing block (5 c), two strip notches are formed in two sides of the upper die seat (5 b) and are avoided, the tops of the two first guide pillars (5 i) pass through the bottom of the upper die seat (5 b) and are positioned in the strip notches, the two first guide columns (5 i) are connected with the upper die holder (5 b) in a sliding mode through two limiting rings, the two limiting rings are fixedly installed at the tops of the outer edges of the first guide columns (5 i), two first springs (5 h) are respectively sleeved on the two first guide columns (5 i), two ends of each first guide column (5 i) are respectively abutted to the pressing block (5 c) and the upper die holder (5 b), the bottom of each pressing block (5 c) is provided with a pressing hole (5 c 1) used for pressing a steel shaft, the pressing hole (5 c 1) and the bending hole (5 a 1) are coaxially arranged, the diameter of each pressing hole (5 c 1) and the diameter of each bending hole (5 a 1) are equal to that of the steel shaft, the bending wheel is located on one side, close to the second bending inner die (6), of the lower blocking seat (5 a), and the bending wheel comprises a first pressing wheel (5 j), a first rotating shaft (5 e), two first blocking rings (5 f) and a lateral supporting plate (5 d), two collateral branch faggings (5 d) fixed mounting are in the bottom of upper die base (1), and two collateral branch faggings (5 d) are mutual symmetry setting, first pinch roller (5 j) are located between two collateral branch faggings (5 d), first pivot (5 e) are located first pinch roller (5 j), and two collateral branch faggings (5 d) are passed respectively at the both ends of first pivot (5 e), two collateral branch faggings (5 d) and first pivot (5 e) fixed connection, two first fender rings (5 f) are located the both sides of first pinch roller (5 j) respectively, and the both sides of every first fender ring (5 f) all contradict with first pinch roller (5 j) and collateral branch fagging (5 d).

3. The steel shaft stamping and bending die according to claim 2, wherein the second bending inner die (6) comprises a bending support seat (6 a), a second bending wheel (6 b), a trapezoidal slide seat (6 d), a pressing push plate (6 e), an abutting spring (6 g), a guide slide plate (6 i), a second guide post (6 k), two second baffle rings (6 c) and guide bars (6 h), the pressing push plate (6 e) is fixedly arranged on the top of the upper die base (1), the trapezoidal slide seat (6 d) is positioned under the pressing push plate (6 e), the two guide bars (6 h) are positioned on two sides of the trapezoidal slide seat (6 d), the inner sides of the two guide bars (6 h) are attached to two sides of the trapezoidal slide seat (6 d), the length direction of the two guide bars (6 h) is perpendicular to the conveying direction of the steel shaft, one end of the second guide post (6 k) is fixedly arranged on the trapezoidal slide seat (6 d), the guide sliding plate (6 i) is fixedly arranged at the top of the lower die holder (2), the other end of the second guide post (6 k) penetrates through the guide sliding plate (6 i), a guide hole for the second guide post (6 k) to slide is formed in the guide sliding plate (6 i), a contact spring (6 g) is sleeved on the second guide post (6 k), and two ends of the abutting spring (6 g) are respectively abutted against the guide strip (6 h) and the second guide post (6 k), the second rotating shaft (6 f) is vertically arranged at the top of the trapezoidal sliding seat (6 d), the second bending wheel (6 b) is sleeved on the second rotating shaft (6 f), two second retaining rings (6 c) are respectively positioned at two sides of the second bending wheel (6 b), the inner sides of the two second retaining rings (6 c) are jointed with the second bending wheel (6 b), and the two second stop rings (6 c) are fixedly connected with the second rotating shaft (6 f), and the bending supporting seat (6 a) is positioned on one side of the trapezoidal sliding seat (6 d) close to the first bending internal mold (5).

4. The steel shaft stamping and bending die according to claim 3, wherein the bending support seat (6 a) comprises a connecting plate (6 a 1), a support plate (6 a 2), a support block (6 a 4), a slider (6 a 5), two reinforcing ribs (6 a 3), a third guide pillar (6 a 6) and a collision spring (6 a 7), the support plate (6 a 2) is fixedly installed at the top of the lower die holder (2), the connecting plate (6 a 1) is fixedly installed at the top of the support plate (6 a 2), two ends of the two reinforcing ribs (6 a 3) are respectively and fixedly connected with the connecting plate (6 a 1) and the support plate (6 a 2), the support block (6 a 4) is fixedly installed at the bottom of the connecting plate (6 a 1), a strip-shaped collision notches are formed at the bottoms of the support block (6 a 4), a semicircular notch is formed at one side of the support block (6 a 4) close to the support plate (6 a 2), and the slider (6 a 5) is located right below the semicircular notch, and set up the arc breach that supplies the axis to set up with the semicircle breach on slider (6 a 5), the diameter of arc breach equals the diameter of semicircle breach, the one end fixed mounting of two third guide pillars (6 a 6) is in the one side that backup pad (6 a 2) was kept away from in slider (6 a5, and the other end of two third guide pillars (6 a 6) passes strip-shaped and dodges breach and supporting shoe (6 a 4), and the other end top outer fringe of two third guide pillars (6 a 6) has seted up the external screw thread, and fix on every third guide pillar (6 a 6) and be provided with the nut, one side and supporting shoe (6 a 4) of nut contradict, two conflict springs (6 a 7) are established respectively on two third guide pillars (6 a 6), and the both ends of two conflict springs (6 a 7) are contradicted in slider (6 a 5) and supporting shoe (6 a 4) respectively.

5. The steel shaft stamping and bending die according to claim 4, wherein the distance from the lower baffle seat (5 a) to the top of the lower die seat (2) is greater than the distance from the side of the upper pressing block (5 c) close to the second inner bending die (6) to the side of the supporting block (6 a 4) far away from the first inner bending die (5).

6. The steel shaft stamping and bending die according to claim 5, wherein the rotating mechanism (7) comprises a large gear (7 a), a small gear (7 b), a servo motor (7 c), a supporting frame plate (7 d), a heightening plate (7 e), a sleeve (7 h), a nut (7 i), a baffle ring (7 g), two pressing cylinders (7 k) and a limit ring (7 j), the supporting frame plate (7 d) is fixedly installed on the supporting table, a through hole for the sleeve (7 h) to pass through is formed in the top of the supporting frame plate (7 d), the limit ring (7 j) is fixedly installed on one side, close to the first bending inner die (5), of the sleeve (7 h), the large gear (7 a) is sleeved on the sleeve (7 h), an external thread is formed in the outer edge of the other side of the sleeve (7 h), the nut (7 i) is fixedly installed on the sleeve (7 h), and the nut (7 i) is attached to the supporting frame plate (7 d), two increase board (7 e) fixed mounting on gear wheel (7 a), two compress tightly cylinder (7 k) and equally divide and do not fixed mounting on two increase board (7 e), two fixture block (7 f) are equally divide respectively fixed mounting on the output of two compress tightly cylinder (7 k), and offer the arc breach that is used for the parcel steel shaft on two fixture block (7 f), and the arc breach coaxial line setting on two fixture block (7 f), pinion (7 b) are located gear wheel (7 a) under, and pinion (7 b) and gear wheel (7 a) intermeshing, servo motor (7 c) fixed mounting is on support frame board (7 d), the output of servo motor (7 c) passes support frame board (7 d) and pinion (7 b) fixed connection, the internal diameter of sleeve pipe (7 h) equals the diameter of steel shaft.

7. The stamping and bending die for the steel shaft as claimed in claim 6, wherein the clamping mechanism (8) comprises a first transmission box (8 a), a first clamping device (8 b), a first abutting spring (8 c), a second abutting spring (8 d), a first abutting plate (8 e), a second abutting plate (8 f), a second arc plate (8 h) and a first gear plate (8 i), the first transmission box (8 a) is fixedly arranged at the top of the supporting platform through a base, the first gear plate (8 i) is positioned in the first transmission box (8 a), the first transmission box (8 a) is in transmission connection with the first gear plate (8 i), the first clamping device (8 b) is fixedly arranged at the outer side of the first transmission box (8 a), the bottom of the second arc plate (8 h) is fixedly connected with the top of the first gear plate (8 i), and the first abutting plate (8 e) and the second abutting plate (8 f) are fixedly arranged at one side of the first gear plate (8 i), the first interference spring (8 c) and the second interference spring (8 d) are fixedly arranged at the top and the bottom of the inner side of the first transmission box (8 a), the first transmission box (8 a) comprises a first accommodating box (8 a 1), a first gear (8 a 2), a second gear (8 a 3), a connecting shaft (8 a 4), a guide sleeve (8 a 6) and two limit sleeves (8 a 5), the first accommodating box (8 a 1) is fixedly arranged at the top of the base, the first gear (8 a 2) is positioned at the inner side of the first accommodating box (8 a 1), the second gear (8 a 3) is positioned at the outer side of the first accommodating box (8 a 1), the connecting shaft (8 a 8948) penetrates through the second gear (8 a 3) and the first gear (8 a 2), the connecting shaft (8 a 4) and the first gear (8 a2 a) are fixedly connected with the second gear (3923), and the two limit sleeves (8 a 638 a) are fixedly arranged on the connecting shaft 638 a 5), the inner sides of the two limiting sleeves (8 a 5) are attached to the outer side of the first containing box (8 a 1), the first gear (8 a 2) is meshed with the first gear plate (8 i), the guide sleeve (8 a 6) is fixedly installed at the top of the first containing box (8 a 1), the guide sleeve (8 a 6) is in sliding connection with the first gear plate (8 i), the second gear (8 a 3) is in transmission connection with the pushing mechanism (9), the first gear plate (8 i) is located on one side, away from the first bending inner mold (5), of the first gear (8 a 6), the toothed side of the first gear plate (8 i) is close to the first gear (8 a 2), the distance from the top of the first abutting plate (8 e) to the bottom of the first gear plate (8 i) is smaller than the distance from the center of the first gear (8 a 2) to the top of the inner side of the first containing box (8 a 364), and the distance from the second abutting plate (8 f) to the bottom of the first containing box (8 a 368 i) is smaller than the distance from the top of the center of the first containing box (368 a 368 i), first chucking ware (8 b) include first connecting rod (8 b 1) and first arc board (8 b 2), first arc board (8 b 2) are located the top of second arc board (8 h), and first arc board (8 b 2) and second arc board (8 h) coaxial line setting, the diameter of first arc board (8 b 2) equals with the diameter of second arc board (8 h), and the both ends of first connecting rod (8 b 1) are respectively in first arc board (8 b 2) and first holding box (8 a 1) fixed connection.

8. A steel shaft stamping and bending die according to claim 7, wherein the pushing mechanism (9) comprises a driving assembly (9 a), a second transmission case (9 b), a second clamping device (9 c), a first guide rail (9 d), a first guide slide seat (9 e), a third arc plate (9 f) and a second gear plate (9 h), the first guide rail (9 d) is fixedly installed on the top of the support table, the first guide slide seat (9 e) is installed on the first guide rail (9 d), the second transmission case (9 b) is fixedly installed on the top of the first guide slide seat (9 e), the second clamping device (9 c) is fixedly installed on the second transmission case (9 b), the second clamping device (9 c) has the same structure as the first clamping device (8 b), the second transmission case (9 b) has the same structure as the first transmission case (8 a), and the second gear plate (9 h) is located in the second transmission case (9 b), and the second gear plate (9 h) is engaged with the gear in the second transmission box (9 b), the second gear plate (9 h) is positioned at one side of the gear in the second transmission box (9 b) close to the first bending inner die (5), the third arc plate (9 f) is fixedly installed at the top of the second gear plate (9 h), the length of the second gear plate (9 h) is greater than that of the first gear plate (8 i), the driving component (9 a) is fixedly installed at the top of the supporting table, and the driving component (9 a) is engaged with the second gear (8 a 3) on the second transmission box (9 b) and the second gear (8 a 3) on the first transmission box (8 a).

9. The steel shaft stamping and bending die according to claim 8, wherein the driving assembly (9 a) comprises a rack (9 a 1), an electric push rod (9 a 2), a push plate (9 a 4), a second guide rail (9 a 5) and two second guide sliders (9 a 6), the heightening seat (9 a 7) is fixedly installed at the top of the supporting platform, the second guide rail (9 a 5) is fixedly installed at the top of the heightening seat (9 a 7), the two second guide sliders (9 a 6) are both installed on the second guide rail (9 a 5), the rack (9 a 1) is located at the top of the two second guide sliders (9 a 6), the top of the second guide slider (9 a 6) is fixedly connected with the bottom of the rack (9 a 1), the rack (9 a 1) is respectively engaged with the second inner die (8 a 3) on the first transmission box (8 a) and the first transmission box (9 b) on one side of the equal transmission box (8 a) which is far away from the first bending box (5965 a) and the first transmission box (9 a) is fixedly installed on one side of the push plate (5965), the electric push rod (9 a 2) is fixedly arranged on the top of the support platform through a mounting plate (9 a 3), and the output end of the electric push rod (9 a 2) is fixedly connected with the push plate (9 a 4).

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