Stamping die

Abstract

A stamping die comprises a die body, an upper die and a lower die are arranged on the die body, the upper die comprises a fixing plate and a punching protruding piece which are connected with each other, the punching protruding piece comprises a plurality of punches which are coaxially arranged, the radial size of each punch is sequentially increased in the direction close to the fixing plate, and an upper forming face is arranged at the end, away from the fixing plate, of each punch. The die further comprises a plurality of female dies, punching grooves which are matched with the punches in a cutting mode and correspond to the punches in a one-to-one mode are formed in the female dies, and lower forming faces matched with the upper forming faces are arranged at the edges of groove openings of the punching grooves, so that the edges of the cutting holes are formed under the extrusion action of the upper forming faces and the lower forming faces. During punching, the corresponding female dies are selected according to different size requirements, then the punching convex piece is controlled to approach the female dies until the punching convex piece and the female dies abut against each other, the corresponding punches and the punching grooves are matched to complete punching, punching of different sizes can be achieved only by replacing the female dies, the whole die does not need to be replaced, production efficiency is improved, and meanwhile cost is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch die technical field especially relates to a punch die. BACKGROUND

[0002] Punching is a widely used forming method, through the press and die to plate, strip, pipe and profile etc. exert external force, make it produce plastic deformation or separation, can obtain the workpiece of required shape and size. And in the prior art, the design of punch die is usually single, a die can only form single type hole, this design makes when needing to produce multiple type hole workpiece, often needs the cooperation of multiple dies, increases the production cost and time. SUMMARY

[0003] In view of the deficiencies in the background art, the utility model aims at providing a punch die.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A punch die, including die body, be equipped with upper die and lower die on the die body, the upper die includes fixed plate and punch convex piece that are connected with each other, the punch convex piece includes coaxially arranged several punches, the radial dimension of each punch increases gradually along the direction close to the fixed plate, and is equipped with upper forming surface at the end away from the fixed plate, the outer diameter of the punch located at the end close to the lower die of the punch convex piece remains unchanged, still include several concave dies, each concave die is equipped with punch groove that is cut with the punch, each punch groove is corresponding to each punch, and is equipped with lower forming surface that is adapted to the upper forming surface at the edge of the groove, so that the edge of the cut hole is formed under the extrusion of the upper forming surface and the lower forming surface.

[0006] Further, the lower die is equipped with guide column, the upper die is equipped with through hole that is adapted to each guide column, the guide column is further equipped with several openable and closable limit rings.

[0007] Further, the limit ring includes two arc-shaped ring bodies, one end of the two ring bodies is hingedly connected with each other, and the other end is openable and closable.

[0008] Further, each guide column is further equipped with damping pad, one end of the damping pad is abutted with the lower die, and the other end is abutted with the limit ring.

[0009] Further, the lower die is further equipped with mounting groove, the concave die includes body that is adapted to the mounting groove, and mounting piece that is equipped with the lower forming surface, and the side away from the lower forming surface of the mounting piece is attached with the lower die.

[0010] Further, the mounting groove comprises a first groove matched with the body, and a second groove matched with the mounting sheet.

[0011] Further, the mounting groove penetrates the lower die, and the depth of the second groove is equal to the height of the mounting sheet.

[0012] Further, the mounting sheet is provided with at least two clamping grooves on the side facing the upper die, and the two clamping grooves are symmetrically distributed with respect to the central axis of the punching groove.

[0013] Further, the die body is further provided with a driving device in transmission connection with the fixed plate, and a sensor fixed to the fixed plate and electrically connected with the driving device, and the guide column is provided with a plurality of position sensing points corresponding to the punches one by one, and the sensor is used for monitoring the position information of each position sensing point and transmitting signals to the driving device.

[0014] The utility model discloses the beneficial effect is:

[0015] 1. The utility model provides a punch press, including die body, be equipped with upper die and lower die on die body, and the upper die includes fixed plate and punch convex part who connects each other, and the punch convex part includes coaxial arrangement a plurality of punches, and the radial dimension of each punch increases gradually along the direction close to the fixed plate, and is equipped with upper forming surface on the end away from the fixed plate, still include a plurality of female die, and each female die is equipped with the punch groove with punch cutting cooperation and one -to -one correspondence, and the punch groove is equipped with the lower forming surface with the upper forming surface adaptation at the edge of the slot, so that the edge of cutting hole is formed under the extrusion of the upper forming surface and the lower forming surface, when punching, according to the size requirement of different selection corresponding female die, then control punch convex part to be close to female die until the abutment of both, so that corresponding punch and punch groove cooperation complete punch, this design can realize the punch of different sizes by only replacing female die, need not to replace the whole die, improve production efficiency and effectively reduce cost at the same time.

[0016] 2. The utility model provides a punch press, and the lower die is further equipped with the guide column, and the upper die is equipped with the through -hole with the guide column adaptation, ensures the alignment accuracy of upper die and lower die, avoids the processing error caused by the deviation of upper die. The guide column is further provided with a plurality of limit rings, which can avoid the damage of equipment or processing error caused by excessive movement of the upper die, and the limit ring is a detachable structure, which is convenient to disassemble and replace.

[0017] 3. The utility model provides a punch press, and the guide column is further provided with a damping pad, which is used for absorbing the impact energy in the punching process and reducing the wear of the fixed plate and the limit ring.

[0018] 4. The utility model provides a kind of punch die, female die includes body and mounting piece, lower mould is provided with mounting groove, mounting groove includes the first recess compatible with body, and the second recess compatible with mounting piece, so that female die is connected in mounting groove, without additional limit;And the depth of second recess is equal to the height of mounting piece, so that female die can be completely fitted in mounting groove, and the force of corresponding punching protruding piece is dispersed by lower mould and female die when punching.

[0019] 5. The utility model provides a kind of punch die, mounting piece is provided with at least two clamping grooves towards the side of upper mould, two clamping grooves are distributed symmetrically with respect to the center axis of impact groove, facilitate staff to dress different female die when punching, reduce the pollution to female die.

[0020] 6. The utility model provides a kind of punch die, mould body is further provided with the drive device of output end and fixed plate transmission connection, and inductor electrically connected with drive device, guide column is provided with a plurality of position sensing points corresponding to punch, inductor moves along with fixed plate and detects each position sensing point during punching process, then the information of each position sensing point is transmitted to drive device, drive device receives signal and controls the movement of upper mould on guide column, to realize more accurate punching. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0022] Figure 1 It is a schematic view of the punch die of the utility model;

[0023] Figure 2 It is an explosion view of the punch die of the utility model;

[0024] Figure 3 It is the front view of the punch die of the utility model;

[0025] Figure 4 It is the schematic view of the upper mould of the punch die of the utility model;

[0026] Figure 5 It is the schematic view of the lower mould of the punch die of the utility model;

[0027] Figure 6 It is the schematic view of the female die of the punch die of the utility model;

[0028] Figure 7This is a cross-sectional view of the die cavity of a stamping die according to the present invention;

[0029] In the diagram, 10 is the upper die; 101 is the through hole; 20 is the lower die; 201 is the guide post; 202 is the limiting ring; 203 is the shock-absorbing pad; 204 is the mounting groove; 30 is the fixing plate; 40 is the punching protrusion; 401 is the punch; 402 is the upper forming surface; 50 is the die cavity; 501 is the punch groove; 502 is the lower forming surface; 503 is the body; 504 is the mounting piece; 505 is the clamping groove; and 60 is the base. Detailed Implementation

[0030] The following is combined with Figures 1 to 7 This utility model will be described in detail.

[0031] A stamping die, such as Figure 1 As shown, it includes a mold body 503, on which an upper mold 10 and a lower mold 20 are provided, as follows: Figure 4 As shown, the upper die 10 includes a fixed plate 30 and a punching protrusion 40 connected to each other. The punching protrusion 40 includes several punches 401 coaxially arranged, with the radial dimension of each punch 401 increasing sequentially along the direction close to the fixed plate 30. An upper forming surface 402 is provided at the end away from the fixed plate 30. The outer diameter of the punch 401 located at the end of the punching protrusion 40 near the lower die 20 remains unchanged, making the contact between the punch 401 and the product more stable and ensuring that the punching protrusion 40 can smoothly cut into the product. It also includes several dies 50, each die 50 having a groove 501 that cuts and engages with the punches 401. Each groove 501 corresponds one-to-one with each punch 401, and a lower forming surface 502 adapted to the upper forming surface 402 is provided at the edge of the groove, so that the edge of the cut hole is formed under the extrusion action of the upper forming surface 402 and the lower forming surface 502. All dies 50 have the same outer diameter and can be detachably installed on the same lower die 20. Furthermore, the transition between two adjacent punches 401 is not through the upper forming surface 402, which improves the accuracy of punching.

[0032] During punching, the appropriate die 50 is first selected according to different size requirements. The die 50 is then installed on the lower die 20. The punching protrusion 40 is then controlled to move closer to the die 50 until they abut against each other, allowing the corresponding punch 401 to engage with the punch groove 501 to complete the punching. This design allows for punching of different sizes by simply changing the die 50, eliminating the need to replace the entire mold, thus improving production efficiency while effectively reducing costs.

[0033] In this embodiment, as Figure 3 and Figure 5As shown, the lower die 20 is provided with a plurality of guide columns 201, and the upper die 10 is provided with through holes 101 matched with the guide columns 201. A plurality of limiting rings 202 are further sleeved on the guide columns 201 to avoid damage of the equipment or processing error caused by excessive movement of the upper die 10. The limiting ring 202 is a structure that can be opened and closed. Specifically, the limiting ring 202 includes two arc-shaped ring bodies, and the two ring bodies are hingedly connected at one end and can be opened and closed at the other end. For different sizes of punching, the punching protruding piece 40 moves different distances. For example, the larger the size of the required punching, the more distance the punching protruding piece 40 needs to move. Therefore, when completing punching of different sizes, the position of the fixed plate 30 on the guide column 201 will also be different, and therefore different numbers of limiting rings 202 need to be sleeved. In some embodiments, the height of each limiting ring 202 corresponds to the height of each punch 401, that is, different numbers of limiting rings 202 do not need to be sleeved, and limiting can be achieved by replacing limiting rings 202 of appropriate size. The limiting ring 202 is made of hard metal material and will not easily deform during the punching process.

[0034] In this embodiment, as shown in Figure 2 Each guide column 201 is further sleeved with a shock pad 203, one end of the shock pad 203 abuts against the lower die 20, and the other end abuts against the limiting ring 202. The shock pad 203 can absorb impact energy during the punching process and reduce wear of the fixed plate 30 and the limiting ring 202. The inner side of the limiting ring 202 can be further provided with a gasket to prevent friction between the limiting ring 202 and the guide column 201, and also to absorb impact during limiting.

[0035] In this embodiment, the lower die 20 is further provided with a mounting groove 204, as shown in Figure 6 and Figure 7As shown, the die 50 includes a body 503 adapted to be mounted in the mounting groove 204, and a mounting piece 504 provided with a lower forming surface 502 and capable of being attached to the lower die 20. The mounting groove 204 includes a first groove adapted to the body 503, and a second groove adapted to the mounting piece 504. The die 50 is clamped in the mounting groove 204, ensuring that the die 50 does not deviate during punching, without the need for additional limiting and fixing. The mounting groove 204 extends through the entire lower die 20, and the waste generated by punching can be directly discharged from the lower end of the mounting groove 204. The depth of the second groove is equal to the height of the mounting piece 504, so that the entire die 50 can be completely fitted and mounted in the mounting groove 204, and the lower die 20 and the die 50 jointly disperse the force of the corresponding punching protrusion 40 during punching, further ensuring that the die 50 does not deviate during punching. Further, the side of the mounting piece 504 facing the upper die 10 is provided with at least two clamping grooves 505, which are symmetrically distributed with respect to the center axis of the punch groove 501, facilitating the use of tools such as clamps by workers during punching to assemble and disassemble different dies 50, reducing pollution to the die 50. In some embodiments, the number and position of the clamping grooves 505 can be set according to actual needs, and can be asymmetrically set. Specifically, the radial dimensions of each die 50 differ, and the depth of any punch groove 501 is not less than the height of the punching protrusion 40, ensuring that the corresponding punch 401 can enter and abut against the die 50 during large-size punching.

[0036] In this embodiment, the bottom of the die body 503 is provided with a fixed base 60 for supporting the die body 503 and further providing space for the discharge of waste, while ensuring that the punching protrusion 40 can be successfully completed during large-size punching.

[0037] In this embodiment, the die body 503 is also provided with a driving device in transmission connection with the fixed plate 30, and a sensor fixed to the fixed plate 30 and electrically connected to the driving device. The guide column 201 is provided with a plurality of position sensing points corresponding to each punch 401. The sensor is used to monitor the position information of each position sensing point and transmit signals to the driving device. The driving device is provided with a PLC programmable control board, which can preset target displacement information corresponding to each position sensing point and work and shutdown instructions, so that the driving device can make corresponding feedback according to the signals sent by the sensor to complete the corresponding punching. In some embodiments, the sensor can also sense product information, and send a work signal to the driving device when detecting that the product is placed on the die 50, and the driving device completes the corresponding work according to the predetermined program.

[0038] The working process of the stamping die proposed in this embodiment is as follows:

[0039] The driving device is preset with related punching information, corresponding limit ring 202 is arranged on the guide column 201 according to different size requirements, the corresponding concave die 50 is selected and clamped in the mounting groove 204, then the product to be punched is placed on the concave die 50, the inductor transmits information to the driving device after sensing, the driving device controls the upper die 10 to move towards the lower die 20 along the guide column 201, the inductor can sense the position information of each position sensing point on the guide column 201 during the moving process, until the punch 401 corresponding to the target punching size abuts against the punch groove 501, the driving device immediately controls the fixed plate 30 to stop moving, at this time, the limit ring 202 abuts against the fixed plate 30, and the over-movement of the upper die 10 is avoided.

[0040] After the punching is completed, the driving device controls the upper die 10 to move away from the lower die 20 and return to the initial position, until the next punching, and the above process is recycled.

[0041] The above embodiment is only for illustrating the technical concept and characteristics of the utility model, the purpose is to enable the person skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model. Any equivalent change or modification according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.

Claims

1. A stamping die characterized by, The utility model relates to a die body is provided with upper die and lower die on, the upper die includes fixed plate and punch convex piece that connect with each other, the punch convex piece includes a plurality of punch that set coaxially, the radial dimension of each punch increases gradually along the direction close to the fixed plate, and is equipped with upper forming surface at the end away from the fixed plate, the outer diameter of punch located the end close to the lower die of punch convex piece keeps constant, still include a plurality of female die, each female die is equipped with punch groove that cut with punch cooperation, each punch groove with each punch one to one corresponds, and is equipped with lower forming surface with the upper forming surface adaptation at the edge of slot, so that the edge of cutting hole is formed under the extrusion of upper forming surface and lower forming surface.

2. A stamping die as claimed in claim 1, wherein, The lower die is provided with guide columns, and the upper die is provided with through holes matched with the guide columns; the guide columns are further provided with a plurality of openable and closable limiting rings.

3. A stamping die as claimed in claim 2, wherein, The limiting ring includes two arc-shaped ring bodies, one end of the two ring bodies is hingedly connected to each other, and the other end is openable and closable.

4. A stamping die as claimed in claim 3, wherein, Each guide column is further provided with a shock-absorbing pad, one end of the shock-absorbing pad abuts against the lower die, and the other end abuts against the limiting ring.

5. A stamping die as defined in claim 1, wherein, The lower die is further provided with a mounting groove, the female die includes a body matched with the mounting groove, and a mounting piece provided with the lower forming surface, and one side of the mounting piece away from the lower forming surface is attached to the lower die.

6. A stamping die as claimed in claim 5, wherein, The mounting groove includes a first groove matched with the body, and a second groove matched with the mounting piece.

7. A stamping die as claimed in claim 6, wherein, The mounting groove penetrates the lower die, and the depth of the second groove is equal to the height of the mounting piece.

8. A stamping die as claimed in claim 7, wherein, One side of the mounting piece facing the upper die is provided with at least two clamping grooves, and the two clamping grooves are symmetrically distributed with respect to the center axis of the punch groove.

9. A stamping die as defined in claim 2 wherein, The die body is further provided with a driving device in transmission connection with the fixed plate, and a sensor fixed to the fixed plate and electrically connected with the driving device, the guide columns are provided with a plurality of position sensing points corresponding to each punch, and the sensor is used for monitoring the position information of each position sensing point and transmitting signals to the driving device.

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