CN115213264A

CN115213264A - A punching press bending device for auto-parts

Info

Publication number: CN115213264A
Application number: CN202211144649.1A
Authority: CN
Inventors: 杜允超; 庄志喜; 王旭梅
Original assignee: Yantai Yizhong Intelligent Technology Co ltd
Current assignee: Yantai Yizhong Intelligent Technology Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2022-10-21
Anticipated expiration: 2042-09-20
Also published as: CN115213264B

Abstract

The utility model relates to a punching press bending device for auto-parts, relate to the punching press field, it includes the frame, the frame is equipped with the mould, the power unit that mould is close to the lower mould on lower mould and the drive, the frame has set firmly two and the high parallel and level's of lower mould guide rail, the lower mould is located between two guide rails, the guide rail top has set firmly the material storage frame, the material storage frame is seted up along vertical direction with the logical groove of blank adaptation, the material loading hole with a blank adaptation is seted up to the tip under the material storage frame, frame sliding connection has the diaphragm, the frame is close to the one end of material storage frame and establishes to the feed end, the other end is established to the discharge end, the diaphragm rotates along length direction and is connected with a plurality of vertical driving levers, the diaphragm is equipped with the restriction driving lever to feed end pivoted stop component, the driving lever can rotate to the discharge end, the diaphragm is equipped with the reset component that is used for the driving lever to resume vertical state. The replacement of work piece can be accomplished fast to this application, has the effect that improves machining efficiency.

Description

A punching press bending device for auto-parts

Technical Field

The application relates to the field of stamping, in particular to a stamping and bending device for automobile accessories.

Background

In the processing of auto-parts, sheet metal is comparatively common raw and other materials, and processing often needs to carry out certain angle to sheet metal class blank and bends, makes it present required shape, and the processing of this type of bending generally adopts the bender at present.

The related art can refer to chinese patent with publication number CN102513420A and discloses a bending machine, which comprises a base and a frame arranged on the base, wherein a power mechanism is fixed on the top of the frame, an upper die of a die is connected below the power mechanism, a lower die of the die is fixed on the base, a gap is formed on the lower die, and scale marks are arranged on the frame. The frame is the type of falling U, including epipleural, left side board and right side board, and the scale mark sets up on left side board and right side board. This application is when using the bender, can select the degree of bending of object difference through the comparison of splint and scale mark.

According to the related technology, the machining of the accessories is flow machining, when the bending machine works, a bent workpiece needs to be manually taken down and then a new blank piece is placed on a die, and for safety, the time interval between two times of bending is long, and the machining efficiency is low.

Disclosure of Invention

In order to improve machining efficiency, the application provides a punching press bending device for auto-parts.

The application provides a punching press bending device for auto-parts adopts following technical scheme:

the utility model provides a punching press bending device for auto-parts, which comprises a frame, the frame is equipped with the mould, the power unit that mould is close to the lower mould on lower mould and the drive, the frame has set firmly two and the high parallel and level guide rails of lower mould, the lower mould is located between two guide rails, the guide rail top has set firmly the material storage frame, the material storage frame along vertical direction set up with the logical groove of blank adaptation, the material loading hole with a blank adaptation is seted up to the tip under the material storage frame, frame sliding connection has the diaphragm, the frame is close to the one end of material storage frame and establishes to the feed end, the other end is established to the discharge end, the diaphragm rotates along length direction and is connected with a plurality of vertical driving levers, the diaphragm is equipped with restriction driving lever to feed end pivoted stop component, the driving lever can rotate to the discharge end, the diaphragm is equipped with the reset component that is used for the driving lever to resume vertical state.

By adopting the technical scheme, a plurality of blank pieces are firstly stacked in the through groove, the blank piece positioned at the lowest part is aligned with the feeding hole under the action of gravity, the transverse plate moves towards the discharging end, the deflector rod pushes the workpiece bent on the lower die towards the discharging end under the action of the limiting member, and meanwhile, the deflector rod at the rear part pushes the blank piece positioned at the lowest part out of the feeding hole and moves to the lower die along the guide rail; then the transverse plate moves back, when the transverse plate touches a workpiece, the shifting rod rotates towards the discharge end to reduce the height and return to the initial state, the processes are circulated, the replacement of the workpiece is completed quickly, and the machining efficiency is improved.

Optionally, a plurality of ratchets are fixedly arranged on the upper end face of the guide rail, an included angle between one side of each ratchet close to the feeding end and the guide rail is an obtuse angle, and an included angle between the other side of each ratchet close to the feeding end and the guide rail is an acute angle or a right angle.

By adopting the technical scheme, because the included angles between the two sides of the ratchet and the guide rail are different, the resistance applied when the deflector rod pushes the workpiece to move towards the direction of the discharging end is smaller; when the transverse plate drives the shifting rod to move back to touch the workpiece, the workpiece is greatly resistant to the ratchet, the shifting rod is further ensured to rotate smoothly to the direction of the discharge end to reduce the height, the workpiece is not easy to accidentally push out of the guide rail by the shifting rod, and the workpiece is convenient to collect.

Optionally, the limiting member comprises a stop block, the stop block is fixedly connected with the transverse plate, one side, close to the feeding end, of the shifting rod is abutted to the stop block, the reset member comprises an elastic piece, the elastic piece is located on one side, close to the discharging end, of the shifting rod and is connected between the shifting rod and the transverse plate, and the shifting rod is in a vertical state under the natural state of the elastic piece.

By adopting the technical scheme, when the transverse plate is close to the discharge end to replace the workpiece, the deflector rod cannot rotate towards the direction of the feed end under the abutting limiting action of the stop block, so that the deflector rod is ensured to push the workpiece to move towards the direction of the discharge end; when the transverse plate moves back, the shifting rod is extruded by the resistance of the workpiece to enable the elastic piece to rotate in the direction close to the discharge end, so that the height of the shifting rod is reduced to cross the workpiece, then the elastic piece is reset under the elastic action of the elastic piece, and the structure is simple and good in effect.

Optionally, the limiting member includes a limiting rod, the limiting rod and the shifting rod are fixedly connected at one end close to the transverse plate, one end of the limiting rod, away from the shifting rod, abuts against the upper end face of the transverse plate, the resetting member includes a balancing weight, and the balancing weight is fixedly arranged at one end of the limiting rod, away from the shifting rod.

By adopting the technical scheme, when the transverse plate is fed for replacing the workpiece, the shifting rod cannot rotate towards the direction of the feeding end under the abutting action of the limiting rod and the transverse plate, so that the shifting rod is ensured to push the workpiece to move towards the direction of the discharging end; when the transverse plate moves back, the workpiece is abutted to enable the shifting rod and the limiting rod to rotate synchronously towards the direction of the discharge end, the height of the shifting rod is reduced to cross the workpiece, and then the shifting rod resets under the action of gravity of the balancing weight, so that the structure is simple and the effect is good.

Optionally, the frame rotates and is connected with the axis of rotation, and axis of rotation fixedly connected with first connecting rod, and the one end that the axis of rotation was kept away from to first connecting rod rotates and is connected with the second connecting rod, and the one end that the first connecting rod was kept away from to the second connecting rod rotates with the diaphragm and is connected.

Through adopting above-mentioned technical scheme, the axis of rotation rotates and drives first connecting rod rotatory, and first connecting rod forms crank link structure with the second connecting rod, and then drives diaphragm reciprocating motion, realizes feeding and the back of diaphragm, and simple structure control is convenient.

Optionally, one end of the rotating shaft is coaxially and fixedly connected with a gear, one side of the upper die is fixedly connected with a vertical rack, and the lower end of the rack is meshed with the gear.

By adopting the technical scheme, when the upper die descends to bend the workpiece on the lower die, the rack is driven to descend synchronously, so that the gear and the rotating shaft are driven to rotate reversely, and the transverse plate is linked to move back; when the upper die ascends, the rack drives the rotating shaft to rotate positively through the gear, the transverse plate is linked to feed to realize the replacement of the workpiece, the transverse plate is controlled to move by utilizing the lifting process of the upper die, the matching is accurate, the accidental interference between the replacement and the bending processing of the workpiece is not easy to occur, and the long-time stable processing is favorably ensured.

Optionally, a plurality of balls are rotatably connected between the lower end face of the transverse plate and the rack.

Through adopting above-mentioned technical scheme, when the diaphragm removed, drive the ball and take place to roll and produce rolling friction, compare in the diaphragm and directly take place sliding friction with the frame, frictional force is littleer, is favorable to the power energy can be saved, has effects such as reducing wear, noise abatement simultaneously.

Optionally, a material collecting frame is arranged at one end, close to the discharge end, of the machine frame.

Through adopting above-mentioned technical scheme, the work piece that the processing was accomplished directly falls into the collecting frame under the impetus of driving lever, the workman periodically shift can, be favorable to realizing long-time flow process.

In summary, the present application includes at least one of the following beneficial technical effects:

1. a plurality of blank pieces are firstly stacked in the through groove, the blank piece at the lowest position is aligned with the feeding hole under the action of gravity, the transverse plate moves towards the discharging end, the deflector rod pushes the workpiece bent on the lower die towards the discharging end under the action of the limiting component, and meanwhile, the deflector rod at the rear part pushes the blank piece at the lowest position out of the feeding hole and moves to the lower die along the guide rail; then the transverse plate moves back, when the transverse plate touches a workpiece, the deflector rod rotates towards the discharge end to reduce the height and returns to the initial state, the process is circulated, the replacement of the workpiece is completed quickly, and the machining efficiency is improved;

2. because the included angles between the two sides of the ratchet and the guide rail are different, the resistance applied when the shifting lever pushes the workpiece to move towards the direction of the discharging end is smaller; when the transverse plate drives the shifting rod to move back to touch the workpiece, the workpiece is greatly resisted by the ratchets, so that the shifting rod is enabled to rotate smoothly towards the direction of the discharging end to reduce the height, the workpiece is not easy to accidentally push out of the guide rail by the shifting rod, and the workpiece is convenient to collect;

3. when the upper die descends to bend a workpiece on the lower die, the rack is driven to descend synchronously, the gear and the rotating shaft are driven to rotate reversely, and the transverse plate is linked to move back; when the upper die ascends, the rack drives the rotating shaft to rotate positively through the gear, the transverse plate is linked to feed to realize the replacement of the workpiece, the transverse plate is controlled to move by utilizing the lifting process of the upper die, the matching is accurate, the accidental interference between the replacement and the bending processing of the workpiece is not easy to occur, and the long-time stable processing is favorably ensured.

Drawings

Fig. 1 is a schematic view of the entire structure of embodiment 1.

FIG. 2 is a schematic view showing the structure of the pushing device of embodiment 1.

Fig. 3 is a schematic view showing the positions of the second link and the avoiding hole.

FIG. 4 is a schematic view showing the structure of the pushing device of embodiment 2.

Description of reference numerals: 1. a frame; 11. a power mechanism; 12. an upper die; 121. a rack; 13. a lower die; 14. a feeding end; 15. a discharge end; 2. a guide rail; 21. a ratchet; 3. a material storage rack; 31. a through groove; 32. a feeding hole; 33. avoiding holes; 4. a transverse plate; 41. a deflector rod; 42. a stopper; 43. an elastic member; 44. a limiting rod; 45. a balancing weight; 46. a ball bearing; 5. a rotating shaft; 51. a first link; 52. a gear; 6. a second link; 7. and (7) collecting the materials.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses a punching press bending device for auto-parts.

Example 1:

referring to fig. 1, the stamping and bending device for the automobile parts comprises a rack 1, wherein an upper die 12 and a lower die 13 which are matched with a processed workpiece are installed on the rack 1, and the lower die 13 is fixedly installed on the rack 1; the upper end of the frame 1 is provided with a power mechanism 11, the upper die 12 is arranged on the power mechanism 11, the upper die 12 is opposite to the lower die 13, the upper die 12 is driven by the power mechanism 11 to lift, the blank on the lower die 13 is bent when the upper die descends, and the workpiece is automatically and quickly replaced when the upper die ascends.

Referring to fig. 1, a feed end 14 and a discharge end 15 are respectively arranged at two ends of a length direction of a frame 1, a lower die 13 is located at an intermediate position of the length direction of the frame 1, a vertical material storage frame 3 is installed at the feed end 14, the material storage frame 3 is provided with a vertical through groove 31 which is vertically communicated with the upper portion and the lower portion, the shape of the through groove 31 is matched with a blank, a plurality of blanks to be processed are stacked and placed in the through groove 31 by a user, and the blank automatically falls down in the through groove 31 under the action of gravity.

Referring to fig. 1 and 2, two guide rails 2 which are parallel to the lower die 13 in height and are arranged along the length direction of the frame 1 are fixedly installed on the frame 1, and the two guide rails 2 are arranged in parallel along the width direction of the frame 1, so that the lower die 13 is positioned between the two guide rails 2; the lower end of the material storage frame 3 is fixedly connected with the guide rail 2, and a feeding hole 32 is formed in one side close to the lower die 13, so that blanks in the through groove 31 can conveniently pass through the feeding hole 32 to be separated from the through groove 31 and can be moved onto the guide rail 2.

Referring to fig. 1 and 2, the frame 1 is provided with a pushing device for pushing the workpiece to be separated from the through groove 31 and to slide along the length direction of the guide rail 2, and in the process that the upper die 12 bends the previous workpiece and then rises, the pushing device pushes the workpiece bent on the lower die 13 to the discharging end 15 and pushes the next blank to the lower die 13.

Referring to fig. 1 and 2, the pushing device includes a horizontal plate 4, and the horizontal plate 4 is disposed along the length direction of the frame 1 and can slide along the length direction of the frame 1. The position that frame 1 is in lower mould 13 below has seted up the cavity, and one side fixed mounting of last mould 12 has vertical rack 121, and frame 1 has seted up the through-hole that supplies rack 121 to pass through, through-hole and cavity intercommunication, and the lower tip of rack 121 passes in the through-hole extends to the cavity, when last mould 12 ascends, drives rack 121 and rises in step.

Referring to fig. 1 and 2, a rotating shaft 5 is installed in the cavity, the rotating shaft 5 is horizontally arranged along the width direction of the rack 1, a gear 52 is coaxially and fixedly installed on the rotating shaft 5, the part of the rack 121 located in the cavity is meshed with the gear 52, and the rotating shaft 5 is driven to rotate by the gear 52 in the process that the rack 121 rises along with the upper die 12. In the process of raising the upper die 12 from the lowest position to the highest position, the rotating shaft 5 is rotated by 180 °.

Referring to fig. 1 and 3, the pushing device further includes a first connecting rod 51 and a second connecting rod 6, the first connecting rod 51 and the second connecting rod 6 are both located in the cavity, one end of the first connecting rod 51 is fixedly connected with the rotating shaft 5, and when the rotating shaft 5 rotates, the first connecting rod 51 is driven to swing around the rotating shaft 5; one end of the second connecting rod 6 is rotatably connected with one end of the first connecting rod 51 far away from the rotating shaft 5, the other end of the second connecting rod is rotatably connected with the lower end part of the transverse plate 4, the first connecting rod 51 and the second connecting rod 6 form a crank connecting rod structure, and then the push plate is driven to move towards the direction close to the discharge end 15 along with the rotation of the rotating shaft 5.

Referring to fig. 1 and 2, the pushing device further comprises a plurality of shifting rods 41 which are arranged along the length direction of the transverse plate 4 at equal intervals, the shifting rods 41 are divided into two groups along the width direction of the transverse plate 4, the shifting rods 41 are in a vertical state in a natural state, and the lower ends of the shifting rods 41 are rotatably connected with the transverse plate 4 and can swing around the width direction of the transverse plate 4; the transverse plate 4 is provided with a limiting component for limiting the deflector rod 41 to rotate towards the feeding end 14, the limiting component is a stop block 42, the stop block 42 is fixedly arranged on the transverse plate 4, and one side of the deflector rod 41, which is close to the feeding end 14, is abutted against the stop block 42 in a vertical state and cannot swing towards the feeding end 14.

Referring to fig. 2 and 3, an avoiding hole 33 adapted to the shift rod 41 is formed in one side of the lower end of the material storage frame 3 close to the feeding end 14, all the shift rod 41 synchronously move towards the discharging end 15 along with the transverse plate 4, at the moment, the shift rod 41 located on one side of the material storage frame 3 far away from the lower die 13 penetrates through the avoiding hole 33 to enter the through groove 31 and abut against the side face of the bottommost blank piece in the through groove 31 to push out the blank piece through the feeding hole 32, two ends of a workpiece are respectively supported by the guide rails 2 on two sides, and the workpiece is pushed by the shift rod 41 to be close to the lower die 13 along the guide rails 2.

Referring to fig. 1 and 2, the distance between the two guide rails 2 is smaller than the length of the finished workpiece, and the bent workpiece is also supported by the two guide rails 2. Along with the movement of the transverse plate 4 to the discharge end 15, the deflector rods 41 on the two sides of the lower die 13 push the workpiece bent on the lower die 13 to the discharge end 15 along the guide rail 2, so as to complete the blanking of the finished workpiece; at the same time, the blank closest to the lower die 13 is pushed onto the lower die 13 by the shift lever 41, and the upper die 12 moves to the highest position.

Referring to fig. 1 and 3, the power mechanism 11 drives the upper mold 12 to descend, the rack 121 descends along with the descending, the gear 52 drives the rotating shaft 5 to rotate reversely, at this time, the first link 51 swings reversely, the transverse plate 4 is pulled back through the second link 6, and the transverse plate 4 moves back.

Referring to fig. 2, the shift lever 41 moves back along with the transverse plate 4 synchronously, and due to the fact that the workpiece is placed on the guide rail 2, the shift lever 41 gradually abuts against one side, close to the discharge end 15, of the workpiece in the moving back process, a plurality of ratchets 21 are fixedly installed on the guide rail 2, and at the moment, one side, close to the feed end 14, of the workpiece abuts against one side, close to the discharge end 15, of the ratchets 21.

Referring to fig. 2 and 4, an included angle between one side of the ratchet 21 close to the discharge end 15 and the guide rail 2 is a right angle (or an acute angle), the workpiece abuts against the side surface, and the workpiece does not tend to move upwards, at this time, the workpiece blocks the shift lever 41 to move back continuously, the shift lever 41 rotates and swings in a direction close to the discharge end 15 under the blocking effect of the workpiece, so that the height of the upper end of the shift lever 41 is reduced, and then the shift lever passes through the lower part of the workpiece, and the shift back is completed.

Referring to fig. 2, a reset member is installed between one side of the deflector rod 41 close to the discharge end 15 and the transverse plate 4, the reset member is an elastic piece 43, the elastic piece 43 is a rubber block, and when the deflector rod 41 swings towards the direction close to the discharge end 15, the rubber block is extruded; after the shift lever 41 passes below the workpiece, the elastic restoring force of the elastic member 43 rapidly aligns the shift lever 41 back to the vertical state, so that the workpiece is pushed towards the discharge end 15 to replace the workpiece by repeating the above process.

Referring to fig. 1 and 2, when a workpiece is replaced, the side of the ratchet 21 (see fig. 4) close to the feed end 14 forms an obtuse angle with the guide rail 2, the workpiece is pushed by the deflector rod 41 to abut against the side of the ratchet 21 close to the feed end 14, and the workpiece moves slightly upwards under the action of the inclined side wall of the ratchet 21, further crosses above the ratchet 21 and smoothly moves towards the discharge end 15, so that the workpiece is replaced. Because the blanking of the finished workpiece and the feeding of the next blank are completed by the process that the transverse plate 4 moves towards the discharging end 15, compared with manual operation, the blanking device has higher efficiency; and because the lifting of the upper die 12 is utilized to control the movement of the transverse plate 4, the control is accurate, compared with manual feeding and discharging, a long time does not need to be reserved for the safety of an operator between each lifting stroke of the upper die 12, the processing efficiency is higher, and the processing method is suitable for long-time flow processing.

Referring to fig. 1 and 2, the discharge end 15 is provided with the collecting frame 7, the workpiece bent on the guide rail 2 is gradually close to the collecting frame 7 along with the pushing action of the deflector rod 41, and finally temporarily stored in the collecting frame 7 under the action of gravity, and the user can clean or replace the collecting frame 7 at regular intervals, so that the flow processing is labor-saving.

Referring to fig. 3, a plurality of spherical grooves are formed in the lower end face of the transverse plate 4, balls 46 are mounted in the grooves, and the balls 46 roll in the quick reciprocating process of the transverse plate 4, so that most of friction between the transverse plate 4 and the rack 1 is rolling friction, abrasion of the transverse plate 4 is reduced, and the transverse plate is convenient to have a longer service life under long-time flow machining.

The implementation principle of the embodiment 1 of the application is as follows: a user stacks a plurality of blank pieces in the through groove 31 in advance, and the blank piece at the lowest part is aligned with the feeding hole 32 under the action of gravity; when the upper die 12 descends, the rack 121 and the gear 52 drive the rotating shaft 5 to rotate, the transverse plate 4 is driven to move towards the discharge end 15 under the action of a crank link mechanism formed by the first connecting rod 51 and the second connecting rod 6, the deflector rod 41 pushes the workpiece bent on the lower die 13 towards the discharge end 15 under the action of a limiting component, meanwhile, the deflector rod 41 at the rear part pushes out the blank piece at the lowest part from the feeding hole 32 and moves onto the lower die 13 along the guide rail 2, and when the bending of the upper die 12 is completed, the transverse plate 4 moves back to an initial state; the above processes are circulated, replacement of the workpiece can be completed quickly, and further the machining efficiency is improved.

Example 2:

referring to fig. 4, the main difference between this embodiment and embodiment 1 is: the stop member is distinct from the reset member. The limiting component is a limiting rod 44 integrally formed with the shifting rod 41, the limiting rod 44 is located on one side, close to the feeding end 14, of the shifting rod 41 and is perpendicular to the shifting rod 41, when the shifting rod 41 is vertical, the limiting rod 44 is horizontal and abuts against the upper end face of the transverse plate 4, the shifting rod 41 is prevented from swinging towards the direction of the feeding end 14, and when the transverse plate 4 moves towards the discharging end 15, the shifting rod 41 can push a workpiece.

Referring to fig. 4, the reset component is a weight block 45, the weight block 45 is fixed at one end of the limit rod 44 far away from the shift lever 41, so that the overall weight of the limit rod 44 and the weight block 45 is greater than that of the shift lever 41, when the shift lever 41 crosses the lower part of the workpiece, the turning angle of the shift lever 41 to the discharge end 15 is smaller than 45 degrees, and under the action of gravity, after the shift lever 41 crosses the lower part of the workpiece, the limit rod 44 and the weight block 45 can pull the shift lever 41 back to a vertical state, so that the reset is completed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a punching press bending device for auto-parts, includes frame (1), and frame (1) is equipped with mould (12), lower mould (13) and drives and goes up mould (12) and be close to power unit (11) of lower mould (13), its characterized in that: frame (1) has set firmly two guide rail (2) with the high parallel and level of lower mould (13), lower mould (13) are located between two guide rail (2), guide rail (2) top has set firmly storage frame (3), storage frame (3) are seted up along vertical direction with logical groove (31) of blank adaptation, material loading hole (32) with a blank adaptation are seted up to storage frame (3) lower tip, frame (1) sliding connection has diaphragm (4), frame (1) is close to the one end of storage frame (3) and establishes to feed end (14), the other end is established to discharge end (15), diaphragm (4) are rotated along length direction and are connected with a plurality of vertical driving lever (41), diaphragm (4) are equipped with restriction driving lever (41) to feed end (14) pivoted stop member, driving lever (41) can rotate to discharge end (15), diaphragm (4) are equipped with the reset member that is used for driving lever (41) to resume vertical state.

2. The press bending apparatus for automobile parts according to claim 1, wherein: the upper end face of the guide rail (2) is fixedly provided with a plurality of ratchets (21), one side of each ratchet (21), which is close to the feeding end (14), forms an obtuse angle with the guide rail (2), and the other side of each ratchet is an acute angle or a right angle.

3. The press bending apparatus for automobile parts according to claim 1, wherein: the limiting component comprises a stop block (42), the stop block (42) is fixedly connected with the transverse plate (4), one side, close to the feeding end (14), of the shifting rod (41) is abutted to the stop block (42), the reset component comprises an elastic piece (43), the elastic piece (43) is located on one side, close to the discharging end (15), of the shifting rod (41) and connected between the shifting rod (41) and the transverse plate (4), and the shifting rod (41) is in a vertical state under the natural state of the elastic piece (43).

4. The press bending apparatus for automobile parts according to claim 1, wherein: the limiting component comprises a limiting rod (44), the limiting rod (44) is fixedly connected with one end, close to the transverse plate (4), of the shifting rod (41), one end, far away from the shifting rod (41), of the limiting rod (44) is abutted to the upper end face of the transverse plate (4), the resetting component comprises a balancing weight (45), and the balancing weight (45) is fixedly arranged at one end, far away from the shifting rod (41), of the limiting rod (44).

5. The press bending apparatus for automobile parts according to claim 1, wherein: frame (1) rotates and is connected with axis of rotation (5), and axis of rotation (5) fixedly connected with first connecting rod (51), and the one end that axis of rotation (5) were kept away from in first connecting rod (51) rotates and is connected with second connecting rod (6), and the one end that first connecting rod (51) were kept away from in second connecting rod (6) rotates with diaphragm (4) and is connected.

6. The press bending apparatus for automobile parts according to claim 5, wherein: one end of the rotating shaft (5) is coaxially and fixedly connected with a gear (52), one side of the upper die (12) is fixedly connected with a vertical rack (121), and the lower end part of the rack (121) is meshed with the gear (52).

7. The press bending apparatus for automobile parts according to claim 1, wherein: a plurality of balls (46) are rotatably connected between the lower end face of the transverse plate (4) and the rack (1).

8. The press bending apparatus for automobile parts according to claim 1, wherein: and a material collecting frame (7) is arranged at one end of the rack (1) close to the discharge end (15).