CN212976475U

CN212976475U - Stamping die

Info

Publication number: CN212976475U
Application number: CN202021829067.3U
Authority: CN
Inventors: 刘小伟
Original assignee: Guangzhou Jinloushan Machinery Equipment Co ltd
Current assignee: Guangzhou Jinloushan Machinery Equipment Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-04-16
Anticipated expiration: 2030-08-27

Abstract

The utility model provides a stamping die, includes upper die base and die holder, the upper die base passes through outer baffle with the die holder and is connected formation suppression chamber, the die holder includes fretwork layer and support wall, the die holder both ends are connected with the chute, the fretwork layer top is provided with the waste material discharge hole. During the stamping process, the waste in the pressing cavity is discharged to a chute through the waste discharge hole and is discharged out of the die through the chute. There is limit structure chute top, the support wall has the arch, limit structure with protruding size is the same, the chute middle part is for leaking hopper-shaped, the die holder both ends are provided with the baffle, funnel top width is greater than the distance between the baffle, outwards extend the in-process reduce gradually as to the baffle distance is the same. The upper die base is provided with a nitrogen spring and an upper die insert, the nitrogen spring is connected with a nitrogen pipe, and the upper die insert is connected with a material ejecting pin.

Description

Stamping die

Technical Field

The application relates to the field of dies, in particular to a stamping die.

Background

Automobile plate's in the middle of the stamping process of mould, often can produce a large amount of waste materials, need carry out the manual work to the waste material and discharge, if not in time discharge, can lead to the success rate of finished piece, and the manual work is discharged and is influenced production efficiency.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a stamping die, which comprises a lower die base and an upper die base; the stamping die comprises an upper die base, a lower die base, a pressing cavity, a waste discharging hole, a chute and a chute, wherein the upper die base and the lower die base are connected with each other to form the pressing cavity, the lower die base comprises a hollowed layer, the top of the hollowed layer is provided with the waste discharging hole, the pressing cavity is connected with the hollowed layer through the waste discharging hole, two ends of the hollowed layer are respectively connected with the chute, the top of the chute is erected at the bottom of the hollowed layer, and the chute extends to the outside of the lower die base and is used for discharging waste.

In the implementation process, waste materials generated in the stamping process of the stamping cavity can be discharged through the waste material discharge holes and fall onto the chute, and the chute extends out of the die, so that the waste materials can be finally discharged out of the die through the chute and cannot be blocked in the waste material discharge holes to influence the success rate of the finished piece.

Furthermore, a support wall is arranged in the hollow layer.

In the implementation process, the support wall can increase the stability of the lower die holder. The lower die holder is provided with the hollow layer, so that the stability is reduced, and the influence on the stability caused by the arrangement of the hollow layer is reduced by the supporting wall.

Furthermore, guide sleeves are respectively arranged at the top two ends and the bottom two ends of the upper surface of the lower die holder, a bottom block is arranged in each guide sleeve, and guide pillars corresponding to the guide sleeves on the lower die holder are arranged at the top two ends and the bottom two ends of the upper die holder.

In the implementation process, the upper die base and the lower die base can be better matched. The requirement on the precision in the die is very high, if the upper die holder and the lower die holder are simply ensured to be matched by manual means, the final dimensional precision qualified rate of a workpiece is reduced, meanwhile, the die can vibrate in the stamping process, and the guide pillar extends into the guide sleeve between stamping processes, so that the upper die holder and the lower die holder can be ensured to be effectively matched, and the displacement cannot be generated in the whole stamping process. Meanwhile, the bottom block can enable a space to be reserved between the upper die base and the lower die base, so that waste materials cannot be clamped at the waste material discharge hole.

Furthermore, the lower die holder is provided with the baffles on the left side and the right side of the two ends of the chute, the middle of the chute is funnel-shaped, the width of the top of the middle part of the chute is larger than the distance between the baffles, and the width is gradually reduced to be equal to the distance between the baffles in the process of extending the lower die holder outwards.

In the implementation process, the chute can maintain the relative stability between the vertical direction and the lower die holder. The width of the funnel-shaped top of the middle part of the chute is larger than the distance between the baffles, so that the chute can be prevented from sliding downwards. And the chutes are gradually reduced to the same distance between the baffles in the process of extending towards the outside of the lower die holder, so that the chutes can be fully ensured to finally extend out of the lower die holder, and waste can be fully discharged out of the lower die holder.

Furthermore, a limiting structure is arranged at the top of the chute, a protrusion is arranged on the supporting wall, and the size of the limiting structure corresponds to that of the protrusion and is used for keeping the chute and the lower die holder relatively stable on the horizontal direction.

In the implementation process, the protrusion is adapted to the limiting structure, and when the protrusion is installed, the protrusion is arranged in the limiting structure, so that the chute and the lower die holder keep relative stability in the horizontal direction. And the chute and the lower die base are fixedly connected without screws and the like. When the chute is separated from the lower die holder, the chute only needs to be lifted and pulled out, and compared with the design, the fixed connection mode is convenient for the maintenance and the repair of the die.

Further, the lower die holder is connected with the upper die base through an outer guide plate.

In the implementation process, the upper die base and the lower die base can be stably connected, and the upper die base and the lower die base cannot be displaced due to vibration generated by stamping of a machine tool in the stamping process, so that the pressing cavity is influenced, the shape of a workpiece is changed, and the qualification rate is influenced.

Furthermore, two pairs of flat grooves are fixed at the bottom of the hollow layer through screws and used for receiving waste materials.

In the implementation process, various waste materials generated in the stamping process can be effectively received. During the stamping process, it is common for the edge portion of the piece to produce a relatively bulky scrap material that has been received by the chute. The central part of the product generates a large volume of waste material, and the flat slot is arranged to receive the small volume of waste material.

Furthermore, a nitrogen spring is arranged on one surface of the upper die holder opposite to the lower die holder and is abutted against the lower die holder through the nitrogen spring.

In the above implementation, the pressure in the die can be maintained at a steady level during the stamping process so that the part will not break or wrinkle. Compared with the traditional elastic element, the nitrogen spring can save space, needs no pre-compression, and has short stroke and stable elasticity.

Furthermore, the periphery of the groove is provided with an upper die insert which is provided with an ejection pin for ejecting the workpiece when the die is opened.

In the above-mentioned realization in-process, the liftout round pin pass through the elastic component with the mould passes through the elastic component to be connected, in the middle of the pressing process the liftout round pin can be compressed, and the spring can resume deformation during the die sinking, and elasticity effect is on the liftout round pin, and the liftout round pin further is used on the work piece for the finished piece of adhesion on the mould in the middle of the stamping process is popped out, need not take out the finished piece with the help of other instruments.

Furthermore, a nitrogen gas pipe is installed on the side edge of the upper die base, and the nitrogen gas pipe is connected with the nitrogen gas spring through a connecting hole formed in the bottom of the upper die base and is used for inflating the nitrogen gas spring.

In the above-mentioned realization process, in the middle of the process of punching press, can utilize the nitrogen gas spring to aerify based on different time points, nitrogen gas is compressed and can produce great pressure in the nitrogen gas spring, and is different at whole punching press's pressure, in order to make the pressure in the mould keep at certain level, in different time quantums, passes through nitrogen gas pipe compression with the nitrogen gas of different volumes in the nitrogen gas spring, stops the input of nitrogen gas, and the high pressure nitrogen gas in the follow-up nitrogen gas spring can take place the inflation and produce pressure, acts on the mould. Due to the action, the manufactured part cannot be broken or wrinkled in the stamping process, if a nitrogen pipe is not used, the elastic force generated by a nitrogen spring in the die is fixed, the impact force of the punch is different under different working procedures, and in this case, the yield of the manufactured part is reduced. And, the mould can be placed for a long time when not having the punching press, and the spring can slow down the pressure of mould, prolongs the life-span of mould.

The utility model provides an useful part is through opening up fretwork layer, waste material discharge hole, chute on stamping die, outside the waste material row that produces among the stamping process enlarges the mould, simultaneously through setting up the stability that supports the wall and keep the mould to set up the arch on supporting the wall and set up limit structure on the chute, fix the chute on the horizontal direction, it is supplementary not to go other fixed connection instrument. Meanwhile, the baffles are arranged at the two ends of the mold, and the middle part of the chute is arranged in a funnel shape, so that the chute is kept relatively stable with the mold in the vertical direction. The chute is only required to be lifted and pulled out in a detachable mode, and the working efficiency is improved.

Drawings

FIG. 1 is a top view of a lower die holder from the top in an embodiment of the present application;

FIG. 2 is a view showing the structure of the inclined grooves installed at both ends of the die holder according to the embodiment of the present invention;

FIG. 3 is a schematic view of an upper die base according to an embodiment of the present disclosure;

fig. 4 is a schematic connection diagram of the upper and lower die holders according to the embodiment of the present application.

Icon: 100-a lower die holder; 110-a hollowed-out layer; 111-a support wall; 120-chute; 121-a limiting structure; 130-a flat groove; 140-a guide sleeve; 141-to bottom block; 150-waste drain hole; 200-an upper die holder; 210-guide pillars; 220-nitrogen spring; 230-an upper die insert; 231-ejector pins; 240-nitrogen gas pipe; 300-outer guide plate.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description using the novelty, the terms "first", "second", etc. are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

Referring to fig. 1, 2, 3, and 4, the preferred embodiments provided by the embodiments of the present application are as follows: a stamping die. The die comprises a lower die holder 100 and an upper die holder 200, wherein the lower die holder is provided with a hollow layer 110, as shown in fig. 4, the upper die holder 200 is connected with the lower die holder 100 through an outer guide plate 300, and a pressing cavity is formed in the center of the upper die holder and the lower die holder. The lower die holder 100 comprises a hollow layer 110, a waste discharge hole 150 is formed in the top of the hollow layer 110, the pressing cavity is connected with the hollow layer 110 through the waste discharge hole 150, two ends of the hollow layer are respectively connected with a chute 120, and as can be seen from fig. 1, the chute 120 is erected at the bottom of the hollow layer 110 and extends out of the lower die holder. During the punching process, the waste generated in the pressing cavity enters the hollow layer 110 through the waste discharge hole and is discharged out of the lower die holder 100 through the chute 120 erected in the hollow layer, and the waste does not need to be discharged by opening the die midway.

Further, two ends of the hollow layer 110 are provided with support walls.

In the implementation process, due to the existence of the hollow layer 110, the stability of the lower die holder 100 can be reduced relative to a common lower die holder, and in order to prolong the service life of the die, support walls are arranged at two ends of the hollow layer. The supporting wall may be configured with three or four sides, and if the waste material dropped during the punching process of the product is not much, the area of the inclined groove 120 in the lower die base 100 may be appropriately reduced, and the area and number of the supporting wall may be increased, so that the sufficient discharge of the waste material is ensured and the life of the die is ensured.

Further, guide sleeves 140 are respectively disposed at two ends of the top and two ends of the bottom of the upper surface of the lower die holder 100, a bottom block 141 is disposed in the guide sleeves, and guide posts 210 corresponding to the guide sleeves on the lower die holder are disposed at two ends of the top and two ends of the bottom of the upper die holder. Before stamping, the guide post 210 on the upper die base extends into the guide sleeve 140 of the lower die base 100, and through the action of the guide sleeves and the guide posts, the upper die base and the lower die base can be accurately matched at corresponding positions, so that the shape of a stamped plate cannot be vertically staggered, and the qualification rate is improved. Simultaneously, can judge to the bottom block and leave the space for between upper die base and the die holder, on the one hand, require to leave certain space at upper and lower mould during installation nitrogen spring, on the other hand, also ensure that the waste material can not block in the suppression chamber for the finished piece warp, reduces the qualification rate of finished piece. In a possible implementation manner, a sensor may be disposed near the bottom block, so as to determine whether the guide pillar has extended to the end of the guide sleeve and whether the upper and lower die holders have sufficiently matched with each other in the further determination process, thereby avoiding the occurrence of a deviation in the distance between the dies in the vertical direction and reducing the yield of the manufactured part.

Further, baffles are arranged at two ends of the lower die holder 100, where the chutes 120 are installed, the middle of each chute is funnel-shaped, the width of the top of the middle part of each chute 120 is greater than the distance between the baffles, and the widths of the tops of the middle parts of the chutes 120 are gradually reduced to be equal to the distances between the baffles in the process of extending the lower die holder 100 outwards.

In the implementation process, the inclined groove is obliquely installed and can slide downwards in a natural state, and the inclined groove cannot slide downwards due to the limiting effect of the baffle plate through the structure. Besides, the hollow layer may also be configured to be funnel-shaped, and the width of the funnel of the hollow layer also decreases from the inside of the lower die base 100 to the outside of the hollow layer, but the contraction speed of the hollow layer is faster than that of the chute 120. Compared with a baffle plate structure, the structure can increase the stability of the die, but also increases the working procedures in the manufacturing process of the die.

Furthermore, the top of the chute 120 has a limiting structure 121, and the supporting wall 111 has a protrusion, and the size of the limiting structure is the same as that of the protrusion.

In the implementation process, the limiting structure of the chute 120 is only required to be arranged in the bulge of the supporting wall during installation, and the stability of the chute can be ensured in the horizontal direction. When the die holder is disassembled, the chute can be separated from the lower die holder 100 only by lifting up and pulling out the chute without other fixed connection, so that the working efficiency is improved. In a possible embodiment, a slide rail is also installed on the side wall of the lower die holder 100, and the chute is connected with the lower die holder 100 by means of the slide rail. In this case the mounting and dismounting is cumbersome in relation to the manner of the limit structure.

Further, the lower die base 100 is connected to the upper die base 200 by an outer guide 300.

In the implementation process, the outer guide plate 300 is provided with screw holes, the upper die holder 200 and the lower die holder 100 are provided with the same screw holes, and the outer guide plate 300, the lower die holder 100 and the upper die holder 200 are respectively connected, so that the upper die holder and the lower die holder are connected with each other to form a pressing cavity. The finished piece accomplishes the punching press in the pressing cavity, and outer baffle 300 distributes around the upper and lower die holder for the pressing cavity that the upper and lower die holder formed can not misplace in the horizontal direction because of the vibrations that produce in the punching press in-process in the middle of the punching press, makes the finished piece warp, guarantees the qualification rate of finished piece.

Further, two pairs of flat grooves 130 are fixed at the bottom of the hollow layer through screws and used for receiving waste materials.

In the above implementation process, during the stamping process, the die holder may vibrate to some extent, the waste material with smaller volume may not drop into the chute 120, on the other hand, the waste material at the edge part may both drop into the chute 120 smoothly, the waste material dropped at the center of the workpiece has smaller volume and may not drop into the chute 120, and the flat slot may receive the waste material dropped by the workpiece and may also receive the waste material generated by the vibration. In a possible embodiment, the flat groove can be installed in a sliding way, so that the disassembly and the installation are simpler. The flat groove can be directly disassembled by arranging the discharge holes from the lower die base.

Further, a nitrogen spring 220 is arranged on one surface of the upper die holder opposite to the lower die holder, and the nitrogen spring 220 is abutted against the lower die holder.

The nitrogen spring has the advantages of small volume, large elasticity, long stroke, stable work, long maximum service life up to one million times, and no need of prepressing compared with other traditional springs. In stamping die, the pressure that nitrogen gas spring can guarantee in the mould remains stable, solves the stamping force not enough, goes up the unsteady problem of mould.

Further, the periphery of the groove is provided with an upper die seat which is provided with an upper die insert 230, and the upper die insert is provided with an ejection pin 231 for pressing a workpiece.

Because the nitrogen spring needs to be installed, a certain space is reserved between the upper die and the lower die, and the spring is contained in the installation structure of the ejection pin, so that the ejection pin can eject a workpiece in the upper die onto the lower die base, and the workpiece can be fully pressed. And, when the mould is opened, the liftout round pin can be outside the finished piece ejection mould, has improved work efficiency.

Further, a nitrogen gas pipe 240 is installed on the side edge of the upper die base, and the nitrogen gas pipe is connected with the nitrogen gas spring 220 through a connecting hole formed in the bottom of the upper die base and used for inflating the nitrogen gas spring 220.

In the above implementation process, the nitrogen spring 220 needs to be flushed with nitrogen to function, and in order to save space, the nitrogen pipe 240 is connected to the nitrogen spring 220 at the middle side of the upper die holder 200 to inflate the nitrogen spring 220.

In one possible implementation, the nitrogen spring 220 may also be replaced with a conventional elastic element. Only the spring mounting flange is arranged in the upper die holder 200.

Although embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the embodiments, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A stamping die is characterized by comprising a lower die holder and an upper die holder; the stamping die comprises an upper die base, a lower die base, a pressing cavity, a waste discharging hole, a chute and a chute, wherein the upper die base and the lower die base are connected with each other to form the pressing cavity, the lower die base comprises a hollow layer, the top of the hollow layer is provided with the waste discharging hole, the pressing cavity is connected with the hollow layer through the waste discharging hole, two ends of the hollow layer are respectively connected with the chute, and the chute extends to the outside of the lower die base from the inside of the lower.

2. The stamping die of claim 1, wherein a support wall is disposed within the hollowed-out layer.

3. The stamping die as claimed in claim 1, wherein guide sleeves are respectively arranged at both top and bottom ends of the upper surface of the lower die holder, a bottom block is arranged in each guide sleeve, and guide posts corresponding to the guide sleeves on the lower die holder are arranged at both top and bottom ends of the upper die holder.

4. The stamping die as claimed in claim 1, wherein the lower die holder is provided with baffles at the left and right sides of the two ends provided with the chutes, the chutes are funnel-shaped in the middle, the width of the top of the middle part of the chutes is larger than the distance between the baffles, and the width of the top of the middle part of the chutes is gradually reduced to be the same as the distance between the baffles in the process of extending towards the outside of the lower die holder.

5. The stamping die as recited in claim 2, wherein the top of the chute is provided with a limiting structure, the support wall is provided with a protrusion, and the size of the limiting structure corresponds to the size of the protrusion for keeping the chute and the lower die base relatively stable in the horizontal direction.

6. The stamping die of claim 1, wherein the lower die holder is interconnected to the upper die holder by an outer guide plate.

7. The stamping die of claim 1, wherein the bottom of the hollowed-out layer is secured with two pairs of flat slots for receiving scrap material.

8. The stamping die as claimed in claim 1, wherein a nitrogen spring is arranged on a surface of the upper die holder opposite to the lower die holder and is abutted against the lower die holder through the nitrogen spring.

9. The stamping die of claim 8, wherein the upper die base is provided with an upper die insert, and the upper die insert is provided with an ejector pin for ejecting the workpiece when the die is opened.

10. The stamping die of claim 8, wherein a nitrogen gas pipe is mounted on the side edge of the upper die base and connected with the nitrogen gas spring for inflating the nitrogen gas spring.