CN213915751U - High-precision bending die - Google Patents

Abstract

The utility model belongs to the technical field of the mould stamping technology and specifically relates to a high accuracy mould of bending is related to, and the high accuracy mould of bending is used for bending the work piece, and it includes mould and lower mould, the fixed locating component that is provided with on the lower mould, locating component is including fixed the setting main location platform and the fixed setting on the lower mould are in vice location platform on the lower mould, main location bench has the location boss, the location boss is used for right the work piece carries out prepositioning, vice location platform be used for with it is right to go up the mould cooperation the work piece is bent. The method and the device improve the condition that multiple times of stamping and bending are needed to be carried out on the workpiece in the related art.

Description

High-precision bending die

Technical Field

The application relates to the field of die stamping technology, in particular to a high-precision bending die.

Background

Stamping is a press working method in which a die mounted on a press is used to apply pressure to a material at room temperature to cause separation or plastic deformation of the material, thereby obtaining a desired part. The stamping die is a special process equipment for processing materials (metal or nonmetal) into parts (or semi-finished products) in cold stamping processing, and is called a cold stamping die (commonly called a cold stamping die).

The stamping die is classified into a punching shear die, a bending die, a drawing die, a forming die, a compression die, and the like according to a processing method of a product. The bending die is widely applied, the conventional bending die generally comprises an upper die, a lower die, an unloading device, a guiding device and a fastening device, when the bending die is used, a workpiece is placed on the lower die, the upper die is driven, and the workpiece placed on the lower die is punched and bent by the upper die.

With respect to the related art among the above, the inventors consider the following drawbacks: the processing method comprises the steps of directly placing a workpiece on a lower die and then stamping and bending the workpiece, wherein the workpiece is easy to displace in the process of stamping the workpiece by an upper die, and the workpiece is not bent completely in the single-process stamping process, so that the workpiece needs to be stamped and bent for multiple times, namely the usability of a bending die in the related technology is insufficient.

SUMMERY OF THE UTILITY MODEL

In order to improve the condition that needs carry out a lot of punching press bending to the work piece among the correlation technique, this application provides a high accuracy mould of bending.

The application provides a high accuracy mould of bending adopts following technical scheme:

the utility model provides a high accuracy mould of bending for bend the work piece, includes mould and lower mould, the fixed locating component that is provided with on the lower mould, locating component is including fixed the main location platform on the lower mould and fixed the setting are in vice location platform on the lower mould, the main location bench has the location boss, the location boss is used for right the work piece carries out the prepositioning, vice location platform be used for with it is right to go up the mould cooperation the work piece is bent.

Through adopting above-mentioned technical scheme, through setting up main location platform and vice location platform on the lower mould, when needs bend the work piece, place the work piece and carry out the prepositioning on the boss of location, start the mould afterwards, go up the mould and can remove to the lower mould, the last mould of pushing down can cooperate with vice location platform, then bends the work piece. Through setting up main location platform and location boss for the work piece is difficult for taking place the displacement at the in-process of bending, thereby increases the precision of bending, makes the work piece better at the in-process shaping effect of single process punching press, reduces the emergence that the process needs the punching press condition of bending many times. Therefore, the high-precision bending die improves the condition that a workpiece needs to be punched and bent for multiple times in the prior art.

Optionally, a first retaining wall and a second retaining wall are fixedly arranged on the main positioning table, and the first retaining wall and the second retaining wall are used for limiting the workpiece.

By adopting the technical scheme, after the workpiece is placed in, one part of the workpiece can be positioned between the first retaining wall and the second retaining wall, the first retaining wall and the second retaining wall can apply a clamping force to the workpiece, namely the first retaining wall and the second retaining wall can limit the workpiece, and the first retaining wall and the second retaining wall can be matched with the positioning boss, so that the workpiece arranged on the main positioning table is not easy to displace, and the bending precision is further increased.

Optionally, the auxiliary forming assembly is used for forming the workpiece, and comprises a first forming seat arranged on the upper die in a sliding manner and a second forming seat arranged on the upper die in a sliding manner, a first forming hole and a second forming hole are formed in the main positioning table, a third retaining wall is fixedly arranged on the main positioning table, the first forming hole is located between the first retaining wall and the third retaining wall, the second forming hole is located between the second retaining wall and the third retaining wall, when the upper die is pressed downwards, the first forming seat moves towards the first forming hole, and the second forming seat moves towards the second forming hole.

Through adopting above-mentioned technical scheme, when the upper die pushes down, first shaping seat can move towards first shaping hole, and the second shaping seat can move towards the second shaping hole to carry out the auxiliary forming to the work piece, in order to obtain the shape of required work piece, through setting up first shaping seat and second shaping seat, can carry out auxiliary forming to the work piece when bending, and need not carry out secondary operation to the work piece, increase the usability of the high accuracy mould of bending.

Optionally, the upper die is close to one side of the lower die and is fixedly provided with a first push block and a second push block, when the upper die is pressed downwards, the first push block is used for pushing the first forming seat, and the second push block is used for pushing the second forming seat.

Through adopting above-mentioned technical scheme, when the upper die pushed down, first ejector pad can exert a thrust to first shaping seat, and the second ejector pad can exert a promotion to the second shaping seat to make first shaping seat remove towards first shaping hole, the second shaping seat removes towards the second shaping hole. Through set up first ejector pad and second ejector pad on last mould for just can drive first shaping seat and second shaping seat and remove when the last mould pushes down, need not adopt other mechanisms to drive first shaping seat and second shaping seat, thereby increase the usability of high accuracy mould of bending.

Optionally, the auxiliary forming assembly further comprises a punching forming seat arranged on the lower die in a sliding manner, a third forming hole matched with the punching forming seat is formed in the third retaining wall and the main positioning table, and when the upper die is pressed downwards, the punching forming seat can move towards the third forming hole.

Through adopting above-mentioned technical scheme, when the upper die pushes down, the shaping seat that punches a hole can move towards the third shaping hole to punch a hole to the work piece, through setting up the shaping seat that punches a hole, the shaping seat that punches a hole cooperates with first shaping seat and second shaping seat, pushes down when the upper die and bends the work piece and carry out the shaping and punch a hole to the work piece, and need not carry out secondary operation to the work piece, increases the usability of the high accuracy mould of bending.

Optionally, a third pushing block is fixedly arranged on the upper die, and when the upper die is pressed downwards, the third pushing block is used for pushing the punching forming seat.

Through adopting above-mentioned technical scheme, when the upper die pushed down, the third ejector pad through last mould just can promote the profile of compact seat that punches a hole, need not use other mechanisms to drive the profile of compact seat that punches a hole, increases the usability of high accuracy mould of bending.

Optionally, a guide post is fixedly arranged on the upper die, a guide hole matched with the guide post is formed in the lower die, the guide post is connected with the guide hole in a sliding mode, and when the upper die is pressed down, the guide post can enter the guide hole.

Through adopting above-mentioned technical scheme, when the upper die pushes down, the guide post of going up the mould can enter into to the guiding hole of lower mould, and the guide hole can play the guide effect to the guide post, and the guide post can play the guide effect to last mould simultaneously for it is more accurate with the cooperation of lower mould to go up the mould when pushing down, thereby increases the machining precision of the mould of bending of high accuracy.

Optionally, the number of the guide posts is at least two, and the number of the guide holes is the same as that of the guide posts and corresponds to that of the guide posts one by one.

Through adopting above-mentioned technical scheme, set up two piece at least guide posts and two guiding holes for it is more accurate to go up the mould and cooperate with lower mould complex in-process pushing down, further increases the machining precision of the high accuracy mould of bending.

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

1. the utility model provides a high accuracy mould of bending is through setting up the location boss at the main location bench, when the work piece of packing into, the location boss can play prepositioning effect to the work piece, when the upper die pushes down, because the prepositioning effect of location boss, the work piece is difficult for taking place to remove at the in-process of bending to increase the machining precision of the mould of bending, the work piece can finish in the processing of single operation shaping. Therefore, the high-precision bending die improves the condition that a workpiece needs to be punched and bent for multiple times in the related art.

2. The high-precision bending die further comprises an auxiliary forming assembly, and the auxiliary forming assembly is used for enabling the upper die to perform auxiliary forming on the workpiece in the process of stamping the workpiece, so that the workpiece does not need to be secondarily formed after the workpiece is bent.

Drawings

FIG. 1 is a schematic view of a stamped workpiece according to the related art;

FIG. 2 is a schematic structural diagram of an embodiment of a high-precision bending die according to the present application;

FIG. 3 is a front view of the positioning assembly and auxiliary forming assembly of FIG. 2;

FIG. 4 is a side view of the positioning assembly and auxiliary forming assembly of FIG. 2;

fig. 5 is a schematic view of the mating structure of the upper mold and the positioning assembly in fig. 2.

Description of reference numerals: 1. an upper die; 11. a first push block; 12. a second push block; 13. a third push block; 14. a guide post; 2. a lower die; 21. a guide hole; 3. a positioning assembly; 31. a main positioning table; 311. positioning the boss; 312. a first retaining wall; 313. a second retaining wall; 314. a third retaining wall; 315. a first forming hole; 316. a second molding hole; 317. a third forming hole; 32. a secondary positioning table; 4. an auxiliary forming assembly; 41. a first forming seat; 42. a second forming base; 43. punching a forming seat; 5. a workpiece; 51. a circular ring part; 511. a bending forming part; 512. punching a hole part; 52. a curved portion.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

Referring to fig. 1, in order to obtain a workpiece 5 which is stamped in the related art, the workpiece 5 includes a circular ring portion 51 and a bending portion 52 fixedly disposed on the circular ring portion 51, and two bending forming portions 511 and a punching portion 512 are fixedly disposed on the circular ring portion 51.

The embodiment of the application discloses high accuracy stamping die. Referring to fig. 1 and 2, a high-precision stamping die is used for stamping a workpiece 5, and the high-precision stamping die comprises an upper die 1 and a lower die 2, wherein when the workpiece 5 is stamped, the upper die 1 moves towards the lower die 2, and the upper die 1 and the lower die 2 cooperate to stamp the workpiece 5. The specific structure and the working principle of the upper die 1 and the lower die 2 are the prior art, and are not described again.

In order to increase the positioning accuracy of the workpiece 5 during stamping, a positioning assembly 3 is mounted on the lower die 2, and the positioning assembly 3 comprises a main positioning table 31 fixedly arranged on the lower die 2 and an auxiliary positioning table 32 fixedly arranged on the lower die 2. Specifically, the main positioning table 31 has a substantially cylindrical shape, and the main positioning table 31 is located on the lower die 2 on the side closer to the upper die 1. The main positioning table 31 is fixedly provided with a positioning boss 311, the positioning boss 311 is substantially in a circular truncated cone shape, the positioning boss 311 has a side wall, the side wall is used for pre-positioning the workpiece 5, when machining is needed, the workpiece 5 is placed on the positioning boss 311, and the circular ring part 51 of the workpiece 5 is embedded on the side wall of the positioning boss 311 to prepare for machining. The auxiliary positioning table 32 is substantially triangular prism-shaped, one side of the auxiliary positioning table 32 close to the upper die 1 is provided with an arc surface, the auxiliary positioning table 32 is used for being matched with the upper die 1 to machine a bending part of the workpiece 5, when the upper die 1 is pressed downwards, the upper die 1 presses a part of the workpiece 5 on the auxiliary positioning table 32, and then the bending part 52 is formed.

Therefore, by providing the positioning boss 311, the workpiece 5 is closely attached to the side wall of the positioning boss 311 during machining, that is, the workpiece 5 is not easily displaced during machining, and the purpose of improving the machining accuracy is achieved.

Referring to fig. 2 and 3, in order to further improve the processing accuracy, a first retaining wall 312, a second retaining wall 313 and a third retaining wall 314 are fixedly provided around the main positioning table 31. Specifically, the first retaining wall 312 is substantially rectangular parallelepiped, the first retaining wall 312 has an arc, the second retaining wall 313 is substantially rectangular parallelepiped, the second retaining wall 313 has an arc, the third retaining wall 314 is substantially rectangular parallelepiped, and the third retaining wall 314 has an arc. The first retaining wall 312, the second retaining wall 313 and the third retaining wall 314 are all fixedly disposed on the lower die 2, and the first retaining wall 312, the second retaining wall 313 and the third retaining wall 314 are all wrapped on the side wall of the main positioning table 31. Through the arrangement of the first retaining wall 312, the second retaining wall 313 and the third retaining wall 314, meanwhile, the auxiliary positioning table 32 is located between the first retaining wall 312 and the second retaining wall 313, after the workpiece 5 is placed on the positioning boss 311, the bending portion of the workpiece 5 is located between the first retaining wall 312 and the second retaining wall 313, and the first retaining wall 312 and the second retaining wall 313 exert the abutting force on the workpiece 5, so that when the upper die 1 stamps the workpiece 5, the bending portion of the workpiece 5 is not easy to displace, and the purpose of improving the processing precision of the workpiece 5 is achieved.

Referring to fig. 3 and 4, in order to increase the usability of the high-precision bending die, an auxiliary forming assembly 4 is further mounted on the upper die 1. The auxiliary forming assembly 4 comprises a first forming seat 41 arranged on the lower die 2 in a sliding manner, a second forming seat 42 arranged on the lower die 2 in a sliding manner, and a punching forming seat 43 arranged on the lower die 2 in a sliding manner, wherein the first forming seat 41 is used for processing one bending forming part 511 on the circular ring part 51, the second forming part is used for processing the other bending forming part 511 on the circular ring part 51, and the punching forming seat 43 is used for processing a punching part 512 on the circular ring part 51. Specifically, five guide sliders are fixedly arranged on the upper die 1, the guide sliders are substantially rectangular, guide chutes are formed in the five guide sliders, the first forming seat 41, the second forming seat 42 and the punching forming seat 43 are slidably connected with the guide chutes of the guide sliders, sliding spaces are formed among the guide chutes of different guide sliders, and the first forming seat 41, the second forming seat 42 and the punching forming seat 43 are located in the sliding spaces. Therefore, by applying a pushing or pulling force to the first forming base 41, the second forming set and the punch forming base 43, the first forming base 41, the second forming base 42 and the punch forming base 43 can slide along the length direction of the guide block, i.e. the first forming base 41, the second forming base 42 and the punch forming base 43 move toward or away from the main positioning table 31.

The main positioning table 31 is provided with a first forming hole 315 and a second forming hole 316, the first forming hole 315 is located between the first retaining wall 312 and the third retaining wall 314, the first forming seat 41 is substantially in a rectangular parallelepiped shape, a first striker is fixedly disposed on the first forming seat 41, the first striker faces the first forming hole 315, when the upper die 1 is pressed down, the first forming seat 41 drives the first striker to move toward the first forming hole 315, and the first striker enters the first forming hole 315 to form one of the bending forming portions 511.

The second forming hole 316 is located between the second retaining wall 313 and the third retaining wall 314, the second forming seat 42 is substantially rectangular, a second striker is fixedly disposed on the second forming seat 42, the second striker faces the second forming hole 316, when the upper die 1 is pressed down, the second forming seat 42 drives the second striker to move toward the second forming hole 316, and the second striker enters the second forming hole 316 to form another bending forming portion 511.

A third forming hole 317 is formed in the third retaining wall 314 and the main positioning table 31, the punch forming seat 43 is substantially rectangular, a third striker is fixedly disposed on the punch forming seat 43, the third striker faces the third forming hole 317, and when the upper die 1 is pressed down, the third striker is driven by the third forming seat to move toward the third forming hole 317 and enter the third forming hole 317 to form the punch hole 512.

Referring to fig. 4 and 5, in order to drive the first forming seat 41, the second forming seat 42 and the third forming seat to move, a first pushing block 11, a second pushing block 12 and a third pushing block 13 are fixedly arranged on the upper die 1, wherein the first pushing block 11 is used for driving the first forming seat 41 to move, the second pushing block 12 is used for driving the second forming seat 42 to move, and the third pushing block 13 is used for driving the punching forming seat 43 to move. Specifically, the first pushing block 11, the second pushing block 12 and the third pushing block 13 are substantially rectangular parallelepiped, and the axes of the first pushing block 11, the second pushing block 12 and the third pushing block 13 are all vertically arranged. Chamfers are arranged on the first pushing block 11, the second pushing block 12 and the third pushing block 13, correspondingly, chamfers matched with the chamfers of the first pushing block 11 are arranged on the first forming seat 41, chamfers matched with the chamfers of the second pushing block 12 are arranged on the second forming seat 42, and chamfers matched with the chamfers of the third pushing block 13 are arranged on the third forming seat. When the upper die 1 is pressed down, the chamfer of the first push block 11 will contact with the chamfer of the first forming seat 41, and then a pushing force towards the direction of the first forming hole 315 is applied to the first forming seat 41; the chamfer of the second push block 12 will contact the chamfer of the second forming seat 42, and then exert a pushing force on the second forming seat 42 towards the direction of the second forming hole 316; the chamfer of the third pushing block 13 will contact the chamfer of the third forming seat, and then apply a pushing force to the punch forming seat 43 in the direction of the third forming hole 317, so that the auxiliary forming assembly 4 can process the workpiece 5.

Referring to fig. 2, in order to increase the matching accuracy of the upper die 1 and the lower die 2, a plurality of guide posts 14 are fixedly arranged on the upper die 1, guide holes 21 matched with the guide posts 14 are formed in the lower die 2, and the guide posts 14 are slidably connected with the guide holes 21. When going up mould 1 and pushing down, guide post 14 can enter into guiding hole 21, and guiding hole 21 can play the guide effect to guide post 14, makes guide post 14 then to go up mould 1 and play the guide effect to increase the machining precision of the high accuracy mould of bending. At least two guide posts 14 are provided to have better processing precision, in the embodiment, four guide posts 14 are provided, four guide posts 14 are uniformly distributed on the edge of the upper die 1 close to the lower die 2, correspondingly, the number of the guide holes 21 is the same as that of the guide posts 14, and the guide holes 21 correspond to the guide posts 14 one by one, that is, four guide holes 21 are provided.

The implementation principle of the high-precision bending die in the embodiment of the application is as follows: when the workpiece 5 is placed on the positioning boss 311, the upper die 1 is driven to move toward the lower die 2, the upper die 1 bends the workpiece 5, and the auxiliary forming unit 4 presses down the upper die 1 and simultaneously performs auxiliary forming on the workpiece 5, so that the workpiece 5 is formed with the bent forming portion 511 and the punching portion 512. After the bending is finished, the upper die 1 is driven to be away from the lower die 2, the workpiece 5 is taken out, and the bending operation is finished.

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 (8)

1. The utility model provides a high accuracy mould of bending for work piece (5) bend, its characterized in that: including last mould (1) and lower mould (2), fixed locating component (3) that is provided with on lower mould (2), locating component (3) are in including fixed setting main location platform (31) and the fixed setting on lower mould (2) are in vice location platform (32) on lower mould (2), main location platform (31) are gone up and are had location boss (311), location boss (311) are used for right work piece (5) carry out the prepositioning, vice location platform (32) be used for with it is right to go up mould (1) cooperation work piece (5) are bent.

2. The high-precision bending die according to claim 1, characterized in that: the workpiece limiting device is characterized in that a first retaining wall (312) and a second retaining wall (313) are fixedly arranged on the main positioning table (31), and the first retaining wall (312) and the second retaining wall (313) are used for limiting the workpiece (5).

3. A high accuracy mould of bending of claim 2, characterized in that: also comprises an auxiliary forming component (4) used for forming the workpiece (5), the auxiliary forming assembly (4) comprises a first forming seat (41) arranged on the upper die (1) in a sliding mode and a second forming seat (42) arranged on the upper die (1) in a sliding mode, a first forming hole (315) and a second forming hole (316) are arranged on the main positioning table (31), a third retaining wall (314) is fixedly arranged on the main positioning table (31), the first forming hole (315) is positioned between the first retaining wall (312) and the third retaining wall (314), the second forming hole (316) is positioned between the second retaining wall (313) and the third retaining wall (314), when the upper die (1) is pressed down, the first forming seat (41) moves towards the first forming hole (315), the second forming shoe (42) moves toward the second forming hole (316).

4. A high accuracy mould of bending of claim 3, characterized in that: go up mould (1) and be close to one side of lower mould (2) is fixed and is provided with first ejector pad (11) and second ejector pad (12), works as go up mould (1) when pushing down, first ejector pad (11) are used for promoting first shaping seat (41), second ejector pad (12) are used for promoting second shaping seat (42).

5. A high accuracy bending die according to claim 3 or 4, wherein: supplementary shaping subassembly (4) still including slide setting at lower mould (2) the shaping seat (43) that punches a hole, third barricade (314) and main location platform (31) are last seted up with the shaping seat (43) complex third shaping hole (317) that punches a hole, work as go up mould (1) and push down, punch a hole shaping seat (43) can move towards third shaping hole (317).

6. A high accuracy mould of bending of claim 5, characterized in that: the punching die is characterized in that a third push block (13) is fixedly arranged on the upper die (1), and when the upper die (1) is pressed downwards, the third push block (13) is used for pushing the punching forming seat (43).

7. A high accuracy mould of bending of any claim 1-4, characterized by: go up fixed guide post (14) that is provided with on mould (1), seted up on lower mould (2) with guide post (14) complex guiding hole (21), guide post (14) with guiding hole (21) sliding connection, when last mould (1) pushes down, guide post (14) can enter into in guiding hole (21).

8. A high accuracy mould of bending of claim 7, characterized in that: the number of the guide posts (14) is at least two, and the number of the guide holes (21) is the same as that of the guide posts (14) and corresponds to that of the guide posts one by one.

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