CN220387671U

CN220387671U - Large rotary stamping die

Info

Publication number: CN220387671U
Application number: CN202321876673.4U
Authority: CN
Inventors: 陶校军; 盛龙龙; 龙洋; 洪振龙
Original assignee: Ningbo Zhenyu Technology Co Ltd
Current assignee: Ningbo Zhenyu Technology Co Ltd
Priority date: 2023-07-17
Filing date: 2023-07-17
Publication date: 2024-01-26
Anticipated expiration: 2033-07-17

Abstract

The utility model discloses a large rotary stamping die, which comprises an upper die and a lower die, wherein the upper die comprises an upper die seat and a male die, the lower die is rotationally connected with a female die matched with the male die, the upper die is provided with a withdrawal mechanism and a balance mechanism, the upper die is movably connected with a plurality of guide posts, each guide post penetrates through the withdrawal mechanism and is connected with the male die, the lower die is provided with a guide hole matched with the guide post, the upper die is provided with a plurality of first maintenance structures, and part of the guide posts are linked with the withdrawal mechanism to form a gap for the male die to move upwards; the balance mechanism comprises a plurality of elastic components, the elastic components comprise a connecting piece and a second maintaining structure, the first end of the connecting piece is connected with the upper die base, and the second end of the connecting piece is connected with the male die. According to the utility model, the return mechanism is smoothly linked through the balance mechanism, and the male die and each guide post can be returned under the condition that the female die does not rotate in place, so that the damage of the large-rotation stamping die is avoided, and the service life of the die is prolonged.

Description

Large rotary stamping die

Technical Field

The utility model relates to the technical field of die equipment, in particular to a large-rotation stamping die.

Background

The new energy electric vehicle adopts a motor to drive a vehicle body to run, along with the high-speed development of the new energy automobile industry in recent years, higher requirements are put on the quality and the service life of the motor, the problem of uneven thickness of raw materials of stator and rotor iron core punching sheets of the motor is solved, coaxiality, parallelism and dynamic balance precision of the stator and rotor iron cores are required to be ensured, the precision requirements are realized by using a large rotary structure die for processing, and because of the characteristic structure of the iron cores, great appearance differences exist, particularly, the appearance of products is special-shaped, and the stator iron core 1 is in a star shape and comprises a ring body 11 and a plurality of star corners 12 surrounding the edge of the ring body. The stator core is usually manufactured by stamping through a large rotary stamping die, the female die rotates in place along with the rotating shaft sleeve in each stamping process, and the male die and the female die conduct position correction through the correction component in the stamping process, so that lamination shaping of the rotor core is realized.

In order to prevent the male die from entering the female die without rotating the female die in place, the existing large-rotation stamping die is generally provided with a protection device for preventing the male die from descending on the male die. For example, the utility model patent with publication number CN202762832U discloses a stamping die with a protection device, which comprises an upper die holder, an upper die holder and a male die, wherein the upper surface of the upper die holder is provided with a female die matched with the male die, the upper surface of the female die is provided with a rotary sleeve, the lower surface of the upper die holder is provided with a small fixing plate, the male die is fixedly connected with the lower surface of the small fixing plate, a drawing plate is movably arranged in the upper die holder, the lower surface of the drawing plate and the upper surface of the small fixing plate are respectively provided with convex teeth capable of being meshed with each other, the upper end of a transmission slide block is in inclined plane fit with one end of the drawing plate, the lower end of the transmission slide block is provided with a guide detection rod, the rotary sleeve is provided with a guide hole matched with the guide detection rod, the other end of the drawing plate is provided with a micro switch, a reset rubber pad is arranged in the drawing plate, the small fixing plate is connected with the upper die holder through the male die, a discharging plate is sleeved outside the male die, and the discharging plate is connected with the male die fixing plate through a discharging spring.

In actual use, the stamping die pushes the drawing plate to enable the upper fixing plate and the drawing plate to have a jogged gap, the elastic force of the restoring deformation of the unloading spring drives the male die to be lifted, however, if the elastic force of the unloading spring is too large, the small fixing plate can be used for extruding and overtightening the drawing plate, so that the drawing plate is difficult to move in place in time, the concave and the male dies are broken or broken due to dislocation stamping, the guide assembly is damaged, the die is damaged, and the service life of the die is shortened.

Disclosure of Invention

The utility model aims to solve the defects of the technology, and the large rotary stamping die is designed, the return mechanism is smoothly linked through the balance mechanism, and the male die and each guide post can be returned under the condition that the female die does not rotate in place, so that the large rotary stamping die is prevented from being damaged, and the service life of the die is prolonged.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the large-rotation stamping die comprises an upper die and a lower die, wherein the upper die comprises an upper die base and a male die, the lower die is rotationally connected with a female die matched with the male die, the upper die is provided with a withdrawal mechanism and a balancing mechanism, the upper die is movably connected with a plurality of guide posts, each guide post is arranged on the withdrawal mechanism in a penetrating mode and is connected with the male die, the lower die is provided with a guide hole matched with the guide post, the upper die is provided with a plurality of first maintenance structures, each first maintenance structure acts on the male die to enable the male die to have an upward moving trend, and part of the guide posts are linked with the withdrawal mechanism to form a gap for the male die to move upwards;

the balance mechanism comprises a plurality of elastic components, each elastic component comprises a connecting piece and a second maintenance structure, each second maintenance structure is arranged in the corresponding upper die base, a first end of each connecting piece is connected with the corresponding upper die base, and a second end of each connecting piece is connected with the corresponding male die.

Preferably, the retracting mechanism comprises a moving plate and a drawing plate, the moving plate is arranged at the top of the male die and is connected with the second end of the connecting piece, the drawing plate is movably connected to the bottom of the upper die holder, one side of the drawing plate is provided with a reset structure connected with the upper die holder, the opposite sides of the moving plate and the drawing plate are respectively provided with a tooth part, the tooth parts of the moving plate are in concave-convex fit with the tooth parts of the drawing plate, the drawing plate is communicated with a first movable hole for each guide post to move, a driving inclined plane is formed in the first movable hole, part of the guide post is matched with the driving inclined plane, and the drawing plate is communicated with a second movable hole for the connecting piece to move.

Preferably, the elastic component further comprises a height-adjustable adjusting piece, the upper die holder is penetrated with a sliding hole for sliding connection of the connecting piece, a positioning piece is installed at the top opening of the sliding hole, the first end of the connecting piece is connected with the adjusting piece, the second holding structure is a spring piece, and the second holding structure acts on the opposite sides of the positioning piece and the adjusting piece.

Preferably, the adjusting piece is composed of a plurality of gaskets which are stacked, and the adjusting piece is connected in the sliding hole in a sliding way.

Preferably, the upper die further comprises a die plate part, a base part is arranged at the top of the male die, the moving plate is arranged at the top of the base part, the base part is fixedly connected with each guide post, the male die can pass through the die plate part to move, and a guide sleeve for sliding connection of the guide posts is arranged in the die plate part.

Preferably, the base part is provided with a movable groove for installing the first maintenance structure, the template part is provided with a pressing plate for covering the movable groove, the first maintenance structure is a spring piece, and the first maintenance structure is arranged on the opposite sides of the movable groove and the pressing plate.

Preferably, the shapes of the female die and the male die are matched with the stator core, and the plurality of first maintenance structures are uniformly distributed along the edge of the male die.

Preferably, the elastic components are uniformly distributed in a rectangular array, and are respectively arranged at the star corners corresponding to the ring body.

Preferably, a driving part is arranged at the upper end of the guide post, the outer surface of the driving part is matched with the driving inclined plane, a sliding post is arranged at the end part of the guide post, which is exposed out of the driving part, and a sliding groove for sliding connection of the sliding post is formed in the upper die holder.

Preferably, the lower die comprises a fixed bushing and a rotary driving device, the female die is sleeved with a rotary sleeve, each guide hole is formed in the top of the rotary sleeve, the rotary sleeve is rotationally connected in the fixed bushing, and the movable part of the rotary driving device is connected with the rotary sleeve.

Compared with the prior art, the utility model has the beneficial effects that:

when the large rotary stamping die is used, if the female die does not rotate in place, the guide columns cannot be fully inserted into and matched with the corresponding guide holes, at the moment, the lower die extrudes the guide columns to move upwards, so that the guide columns are linked with the withdrawal mechanism to act to form a gap for the male die to move upwards, the balancing mechanism enables the male die to have downward extrusion force through each elastic component and is used for balancing the force exerted by each first maintenance structure on the withdrawal mechanism, so that the withdrawal mechanism is smooth in linkage, each first maintenance structure is restored to deform to drive the male die to overcome each second maintenance structure to move upwards so as to avoid entering the female die, and each guide hole is driven to move upwards so as to avoid collision with the guide hole when the male die moves upwards, so that damage to the large rotary stamping die is avoided, and the service life of the die is prolonged.

Drawings

FIG. 1 is a schematic diagram of the upper die in an embodiment;

FIG. 2 is a schematic view of the structure of the pushing mechanism and the punch in the embodiment;

FIG. 3 is a schematic view of the structure of the lower die in the embodiment;

FIG. 4 is a schematic view of the structure of a guide post in an embodiment;

FIG. 5 is a schematic view of the structure of the drawer plate in the embodiment;

fig. 6 is a schematic structural view of a stator core manufactured by the large-rotation stamping die in the embodiment.

In the figure: 1. a stator core; 11. a ring body; 12. star-shaped corner parts; 2. an upper die holder; 3. a template part; 4. a male die; 5. a female die; 6. a moving plate; 7. drawing a plate; 8. a blocking piece; 9. a guide post; 10. a guide hole; 13. a second maintenance structure; 14. an adjusting member; 15. a reset structure; 16. a first movable hole; 17. a driving inclined plane; 18. a second movable hole; 19. a slide hole; 20. a positioning piece; 21. a base portion; 22. a guide sleeve; 23. a movable groove; 24. a pressing plate; 25. a driving section; 26. a spool; 27. a chute; 28. fixing the bushing; 29. a rotation driving device; 30. a swivel sleeve; 31. a buffer structure; 32. a first bearing; 33. a second bearing; 34. a first maintenance structure; 35. and a connecting piece.

Detailed Description

The utility model is further described below by way of examples with reference to the accompanying drawings.

Referring to fig. 1 to 6, a large rotary stamping die comprises an upper die and a lower die, wherein the upper die comprises an upper die holder 2, a male die 4 and a die plate part 3, the upper die is provided with a retracting mechanism and a balancing mechanism, the retracting mechanism comprises a moving plate 6 and a drawing plate 7, the moving plate 6 is arranged at the top of the male die 4, the drawing plate 7 is movably connected to the bottom of the upper die holder 2, teeth are arranged on opposite sides of the moving plate 6 and the drawing plate 7, and the teeth of the moving plate 6 are in concave-convex fit with the teeth of the drawing plate 7.

The upper die is movably connected with a plurality of guide posts 9, the upper end of the guide posts 9 is provided with a driving part 25, the upper end of the guide posts 9, which is exposed out of the driving part 25, is provided with a slide post 26, the upper die holder 2 is provided with a slide groove 27 for sliding connection of the slide post 26, the slide groove 27 penetrates through the top of the upper die holder 2, a blocking piece 8 is arranged at the top opening of the slide groove 27, a buffer structure 31 is arranged between the blocking piece 8 and the slide post 26, and the buffer structure 31 is a spring piece and is used for buffering impact force generated when the lower end of the guide posts 9 collide.

The top of the male die 4 is provided with a base part 21, the moving plate 6 is arranged at the top of the base part 21, the drawing plate 7 is penetrated with a first movable hole 16 for each guide post 9 to move, the guide posts 9 penetrate through the moving plate 6 and are connected with the base part 21, the male die 4 can move through the die plate part 3, and a guide sleeve 22 for sliding connection of the guide posts 9 is arranged in the die plate part 3 and used for guiding each guide post 9 and the male die 4 to move up and down.

The base part 21 is provided with a plurality of movable grooves 23, the plurality of movable grooves 23 are uniformly distributed along the edge of the male die 4, a first holding structure 34 is arranged in the movable grooves 23, the die plate part 3 is provided with a pressing plate 24 covering the movable grooves 23, the first holding structure 34 is a spring piece, the first holding structure 34 is arranged on the opposite sides of the movable grooves 23 and the pressing plate 24, and each first holding structure 34 acts on the male die 4 to enable the male die 4 to have upward movement trend.

The lower die comprises a fixed bushing 28 and a rotary driving device 29, wherein a female die 5 matched with the male die 4 is rotationally connected to the fixed bushing 28, a rotary sleeve 30 is sleeved on the female die 5, and a movable part of the rotary driving device 29 is connected with the rotary sleeve 30. The inner wall of the fixed bushing 28 is in a step shape, the rotary sleeve 30 is matched with the fixed bushing 28, a plurality of first bearings 32 are arranged between the fixed bushing 28 and the rotary sleeve 30, the rotary driving device 29 is a belt wheel for driving the rotary sleeve 30 to rotate, a second bearing 33 is arranged between the belt wheel and the fixed bushing 28, the first bearings 32 and the second bearings 33 are needle bearings, the belt wheel is connected with a driving motor through a synchronous belt, and the rotary connection of the female die 5 on the lower die is realized.

A plurality of guide holes 10 are formed in the top of the rotary sleeve 30, when the female die 5 rotates in place, the guide holes 10 respectively correspond to the guide posts 9, the lower ends of the guide posts 9 are inserted into the guide holes 10 and are completely matched with the guide posts, at the moment, the tooth parts of the drawing plate 7 and the tooth parts of the moving plate 6 are in contact so as to support the male die 4 to enable the male die 4 to be unable to move, and therefore the positions of the guide posts 9 are positioned, and the guide posts 9 are ensured to be matched with the guide holes 10 respectively, so that the shapes of the female die 5 and the male die 4 are matched with the stator core 1.

The balance mechanism comprises a plurality of elastic components, the elastic components are uniformly distributed in a rectangular array and are respectively arranged corresponding to the ring body 11 by each star corner 12, each elastic component comprises a connecting piece 35, a second holding structure 13 and an adjusting piece 14, the upper die holder 2 is communicated with a sliding hole 19 for the connecting piece 35 to slide and connect, a positioning piece 20 is arranged at the top opening of the sliding hole 19, the first end of the connecting piece 35 is connected with the adjusting piece 14, the second holding structure 13 is a spring piece, the second holding structure 13 acts on opposite sides of the positioning piece 20 and the adjusting piece 14, the second end of the connecting piece 35 is connected with the movable plate 6, and the drawing plate 7 is communicated with a second movable hole 18 for the connecting piece 35 to move.

One side of the drawing plate 7 is provided with a reset structure 15 connected with the upper die holder 2, the reset structure 15 is a fixed block and a spring part fixedly connected with the upper die holder 2, the first movable hole 16 and the second movable hole 18 are waist holes, each waist hole extends along the length direction of the drawing plate 7, and the inner hole wall of the first movable hole 16 is in contact with the guide hole 10 for guiding the moving direction of the drawing plate 7.

When the female die 5 does not rotate in place, the guide posts 9 cannot be fully inserted into and matched with the corresponding guide holes 10, the guide holes 10 and the guide posts 9 are in interference fit, so that the lower die extrudes each guide post 9 to enable the guide posts 9 to move upwards, a driving inclined surface 17 is formed on one side of the inner hole wall of the first movable hole 16, which is close to the reset structure 15, the outer surface of the driving part 25 is matched with the driving inclined surface 17, the guide posts 9 can drive the driving posts to move the drawing plate 7 through the matching of the driving inclined surface 17 when the guide posts 9 drive the driving posts to move upwards, the balance mechanism can enable the moving plate 6 to have extrusion force for downwards moving and extruding the male die 4 through the connecting piece 35 and the second maintaining structure 13, excessive extrusion of the moving plate 6 on the drawing plate 7 under the action of each first maintaining structure 34 can be avoided to a certain extent, and difficult movement of the moving plate is difficult, and smooth linkage of the retracting mechanism is ensured.

Until the teeth of the drawing plate 7 and the teeth of the moving plate 6 are in concave-convex correspondence, a gap for the convex mold 4 to move upwards is formed between the two, each first holding structure 34 is restored to deform so as to drive the convex mold 4 to overcome each second holding structure 13 to move upwards and prevent the convex mold 4 from entering the concave mold 5, the convex mold 4 drives the moving plate 6 to move upwards so as to enable the teeth of the drawing plate 7 and the teeth of the moving plate 6 to be meshed with each other, and each guide hole 10 is driven to move upwards when the convex mold 4 moves upwards so as to avoid collision with the guide hole 10, so that the large rotary stamping die is protected, and the service life of the die is prolonged.

The adjusting piece 14 is composed of a plurality of gaskets which are stacked, the adjusting piece 14 is connected in the sliding hole 19 in a sliding way, the height of the adjusting piece 14 can be adjusted to be high or low by changing the stacking quantity of the gaskets according to the requirement of balancing the extrusion force of each first maintaining structure 34, and therefore the distance between the positioning piece 20 and the adjusting piece 14 is adjusted, the elasticity of the second maintaining structure 13 is changed accurately, and the stress balance of the retracting mechanism is realized.

Of course, the above is only a typical example of the utility model, and other embodiments of the utility model are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the utility model claimed.

Claims

1. The utility model provides a big gyration stamping die, includes mould and lower mould, goes up the mould and includes upper die base (2) and terrace die (4), the lower mould rotate be connected with terrace die (4) complex die (5), characterized by: the upper die is provided with a retracting mechanism and a balancing mechanism, the upper die is movably connected with a plurality of guide posts (9), each guide post (9) is penetrated through the retracting mechanism and is connected with the male die (4), the lower die is provided with a guide hole (10) matched with the guide post (9), the upper die is provided with a plurality of first maintaining structures (34), each first maintaining structure (34) acts on the male die (4) to enable the male die to have an upward moving trend, and part of the guide posts (9) are linked with the retracting mechanism to form a gap for the male die (4) to move upwards;

the balance mechanism comprises a plurality of elastic components, each elastic component comprises a connecting piece (35) and a second maintaining structure (13), each second maintaining structure (13) is arranged in the corresponding upper die holder (2), a first end of each connecting piece (35) is connected with the corresponding upper die holder (2), and a second end of each connecting piece (35) is connected with the corresponding male die (4).

2. The large rotary stamping die according to claim 1, characterized in that: the retracting mechanism comprises a moving plate (6) and a drawing plate (7), wherein the moving plate (6) is arranged at the top of the male die (4) and is connected with the second end of the connecting piece (35), the drawing plate (7) is movably connected to the bottom of the upper die holder (2), one side of the drawing plate (7) is provided with a reset structure (15) connected with the upper die holder (2), the opposite sides of the moving plate (6) and the drawing plate (7) are respectively provided with a tooth part, the tooth parts of the moving plate (6) and the tooth parts of the drawing plate (7) are in concave-convex fit, the drawing plate (7) is penetrated with a first movable hole (16) for each guide post (9) to move, a driving inclined surface (17) is formed in the first movable hole (16), the part of the guide post (9) is matched with the driving inclined surface (17), and the drawing plate (7) is penetrated with a second movable hole (18) for the connecting piece (35) to move.

3. The large rotary stamping die according to claim 1 or 2, characterized in that: the elastic component still includes high adjustable regulating part (14), upper die base (2) link up and have the confession connecting piece (35) slide hole (19) of connection, locating piece (20) are installed to the open-top department of slide hole (19), the first end of connecting piece (35) with regulating part (14) are connected, second maintenance structure (13) are the spring piece, second maintenance structure (13) are used for locating piece (20) with opposite side of regulating part (14).

4. A large rotary stamping die as defined in claim 3, wherein: the adjusting piece (14) is composed of a plurality of gaskets which are stacked, and the adjusting piece (14) is connected in the sliding hole (19) in a sliding mode.

5. The large rotary stamping die according to claim 2, characterized in that: the upper die further comprises a die plate part (3), a base part (21) is arranged at the top of the male die (4), the moving plate (6) is arranged at the top of the base part (21), the base part (21) is fixedly connected with each guide post (9), the male die (4) can move through the die plate part (3), and a guide sleeve (22) for sliding connection of the guide posts (9) is arranged in the die plate part (3).

6. The large rotary stamping die of claim 5, wherein: the base part (21) is provided with a movable groove (23) for installing the first maintenance structure (34), the template part (3) is provided with a pressing plate (24) for covering the movable groove (23), the first maintenance structure (34) is a spring piece, and the first maintenance structure (34) is arranged on the opposite sides of the movable groove (23) and the pressing plate (24).

7. The large rotary stamping die according to claim 2, characterized in that: the shapes of the female die (5) and the male die (4) are matched with the stator core (1), and a plurality of first holding structures (34) are uniformly distributed along the edge of the male die (4).

8. The large rotary stamping die of claim 7, wherein: the elastic components are uniformly distributed in a rectangular array and are respectively arranged at the star corners (12) corresponding to the ring body (11).

9. The large rotary stamping die according to claim 2, characterized in that: the upper end of the guide post (9) is provided with a driving part (25), the outer surface of the driving part (25) is matched with the driving inclined plane (17), the end part of the guide post (9) exposed out of the driving part (25) is provided with a slide post (26), and the upper die holder (2) is provided with a sliding groove (27) for sliding connection of the slide post (26).

10. The large rotary stamping die according to claim 1, characterized in that: the lower die comprises a fixed bushing (28) and a rotary driving device (29), the female die (5) is sleeved with a rotary sleeve (30), each guide hole (10) is formed in the top of the rotary sleeve (30), the rotary sleeve (30) is rotationally connected in the fixed bushing (28), and the movable part of the rotary driving device (29) is connected with the rotary sleeve (30).