CN218656431U - Stamping die - Google Patents

Abstract

The utility model discloses a stamping die. The utility model discloses a stamping die includes first mould, first pin, second mould and second pin. The first die is provided with a first through hole penetrating along the die closing direction, and the first pin is in interference fit with the first through hole. The second die is provided with a second through hole penetrating along the die closing direction, the aperture of the second through hole is the same as that of the first through hole, and the hole axes are overlapped. The second die is provided with a stripper plate and a stripper back plate, and the second through hole penetrates through the stripper plate and the stripper back plate. The second pin and the interference fit of the second through hole, the end part of the second pin deviating from the first pin extends to the end face of the stripper plate deviating from the first die, the side wall of the second pin is provided with a first protruding part, the stripper plate and the stripper plate are arranged between a first groove communicated with the second through hole, and the first protruding part extends into the first groove. The second mould can be clapped back the first pin of running out of the first mould when the stamping mould is opened by setting up the second pin, thereby improving the safety and the working efficiency of the stamping mould.

Description

Stamping die

Technical Field

The utility model relates to the technical field of mold, especially a stamping die.

Background

A stamping die is a special process device for processing materials into parts in cold stamping processing.

The stamping die comprises an upper die part and a lower die part, wherein the upper die part comprises an upper die base, an upper padding plate, an upper clamping plate, a stripping back plate and a stripping plate, and the lower die part comprises a lower die plate, a lower padding plate and a lower die base. In order to ensure the assembly precision of the stamping die, pin holes for positioning are required to be formed in the upper die part and the lower die when each component of the upper die part and the lower die is processed, and pins are arranged in the pin holes for fixing each component of the upper die part and the lower die part.

In recent years, the profit of the stamping industry is getting lower and lower due to the rising purchase cost of raw materials, the rising labor cost and the gradual hardening of market competition. In order to improve the competitiveness of enterprises, the production cost must be reduced as much as possible to improve the production efficiency. Since the speed of stamping in the stamping die production directly affects the production cost, the newly developed stamping die is vigorously developed towards high speed. The mould is in fast-speed punching production, and the locating pin of lower mould part can run out the lower bolster surface occasionally owing to the vibration of mould and the vacuum suction effect of last mould stripper plate, can directly run into the locating hole on the stripper plate of same position even a bit, causes the actuation that stripper plate and locating pin last, offset and striking, and when the locating pin card dies on stripper plate, the mould will normally not open and shut, directly can lead to stripper plate and lower bolster to crack. The locating pin of going up the mould part also can appear the pin and become flexible to run down and get into the circumstances that takes off the flitch and cause the flitch card to die, and the template also can crack when serious.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a stamping die, this stamping die can prevent effectively that its pin of going up mould part and lower mould part from running out the place panel at the in-process of high-speed punching press to make stamping die safer, high-efficient.

According to the utility model discloses stamping die, including first mould, first pin, second mould and second pin. The first die is provided with a first through hole penetrating along the die closing direction; the first pin is in interference fit with the first through hole; the second die is matched with the first die and provided with a second through hole penetrating through the second die along the die assembly direction, the second through hole has the same aperture as the first through hole, the axes of the second through hole and the first through hole are coincident, one side of the second die facing the first die is provided with a stripping plate, one side of the stripping plate departing from the first die is provided with a stripping back plate, and the second through hole penetrates through the stripping plate and the stripping back plate; the second pin is in interference fit with the second through hole, the second pin is connected with the stripper plate and the stripper back plate, the end part of the second pin, which deviates from the first pin, extends to the end face position of the stripper back plate, which deviates from the first die, the side wall of the second pin is provided with a first protruding part, a first groove communicated with the second through hole is formed between the stripper plate and the stripper back plate, and the first protruding part extends into the first groove.

According to some embodiments of the utility model, first bellying is arranged around the periphery wall of second pin, and first recess is arranged around the second through-hole, and first recess sets up in the one side of taking off the material backplate towards first mould, or first recess sets up in the one side of taking off the flitch and deviating from first mould, or first recess sets up in taking off the material backplate and taking off between the flitch.

According to some embodiments of the present invention, when the first groove is disposed on a side of the stripper plate facing the first mold, the wall surface of the first protrusion facing away from the first mold is attached to the wall surface of the first groove facing the first mold; when the first groove is arranged on one side of the stripper plate, which is far away from the first mold, the wall surface of the first bulge, which faces the first mold, is attached to the wall surface of the first groove, which faces the stripper back plate; when the first groove is arranged between the stripping back plate and the stripping plate, the wall surface of the first protruding part facing the first mold is attached to the wall surface of the stripping back plate facing the first groove, and the wall surface of the first protruding part departing from the first mold is attached to the wall surface of the first groove facing the first mold.

According to some embodiments of the invention, the first recess surrounds the peripheral wall surface of the second through-hole and the first boss surrounds the peripheral wall surface of the second pin at an interval.

According to some embodiments of the present invention, the second mold further comprises an upper clamp plate, an upper pad plate, and an upper mold base, wherein the upper pad plate is disposed on one side of the upper mold base facing the first mold, and is attached to the upper mold base; the upper clamping plate is arranged on one side, facing the first mold, of the upper base plate and is attached to the upper base plate; the stripping back plate is arranged on one side, facing the first mold, of the upper clamping plate and is attached to the upper clamping plate; the stripper plate is arranged on one side of the stripper back plate, which faces the first mold, and is attached to the stripper back plate; the upper die holder, the upper backing plate, the upper clamping plate, the stripping back plate and the stripping plate are penetrated through by the second through hole.

According to the utility model discloses a some embodiments, stamping die still includes the third pin, third pin and second through-hole interference fit, and the third pin connects upper die base, upper padding plate and punch holder.

According to some embodiments of the present invention, the first mold comprises a lower mold base, a lower pad plate and a lower mold plate, the lower pad plate is disposed on one side of the lower mold base facing the second mold and is attached to the lower mold base; the lower template is arranged on one side of the lower base plate, which faces the second die, and is attached to the lower base plate; the lower die holder, the lower backing plate and the lower die plate are penetrated through by the first through hole, and the first pin is connected with the lower die holder, the lower backing plate and the lower die plate.

According to some embodiments of the utility model, the terminal surface that first pin faced the second mould is parallel and level with the surface that first mould faced the second mould, the terminal surface that the third pin faced first mould is parallel and level with the surface that the punch holder faced first mould, the terminal surface that the second pin deviates from first mould and the surface parallel and level that takes off the material backplate and deviate from first mould, the terminal surface that the second pin faced first mould with take off the flitch and face the surface parallel and level that first mould was faced, the terminal surface that the second pin faced first mould and the terminal surface that deviates from first mould respectively with the terminal surface butt of first pin and third pin.

According to the utility model discloses a some embodiments, first pin lateral wall is equipped with the second bellying, is equipped with the second recess that communicates with first through-hole between lower bolster and the lower bolster, and the second bellying stretches into the second recess.

According to some embodiments of the utility model, the third pin lateral wall is equipped with the third bellying, is equipped with the third recess that communicates with the second through-hole between punch holder and the upper padding plate, and the third bellying stretches into the third recess.

According to the utility model discloses a stamping die has following beneficial effect at least:

the utility model discloses a stamping die, the in-process of opening gradually finishes in stamping die punching press, space between first mould and the second mould can produce vacuum suction, the surface of first mould is probably run out to the first pin that sets up in the first through-hole, second pin is setting up in the second through-hole department of taking off the material backplate and taking off the flitch section this moment, the second pin sets up first bellying, take off the material backplate and take off and set up between the flitch with first bellying complex first recess, thereby realize the second pin and take off the flitch and take off the more stable fixed of material backplate, the second pin is difficult to for taking off the flitch and moving along self axial direction. When the first pin moves upwards, the second pin can beat the first pin downwards to return to the original position. Through the setting of second pin, clap the first pin that runs out first mould and get back to original position, fundamentally has stopped stamping die because the pin runs out the produced potential safety hazard in first mould surface, has avoided the condition that the first pin of first mould got into the second mould promptly, has improved stamping die's security to make stamping die's operating speed can break through, improved the efficiency of punching press.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a stamping die according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of the stamping die of FIG. 1;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is an exploded view of the stamping die of FIG. 1;

FIG. 5 is a schematic diagram of a second die construction of the stamping die of FIG. 1;

FIG. 6 is a schematic view of a first die structure of the stamping die of FIG. 1;

FIG. 7 is a schematic view of a second pin construction;

fig. 8 is a cross-sectional view of a stamping die according to a second embodiment of the present invention;

fig. 9 is a sectional view of a press die according to a third embodiment of the present invention.

In the drawings, each reference numeral denotes:

the die comprises a first die 100, a lower die holder 110, a lower backing plate 120, a lower die plate 130, a first through hole 140 and a second groove 150;

the second mold 200, the upper mold base 210, the upper padding plate 220, the upper clamping plate 230, the stripping back plate 240, the stripping plate 250, the second through hole 260, the first groove 270 and the third groove 280;

a first pin 300, a second boss 310;

second pin 400, first boss 410;

a third pin 500, a third boss 510.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated in relation to the orientation description, such as up, down, left, right, front, rear, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

It can be understood that, among the correlation technique, stamping die is in high-speed punching production, and the locating pin of lower mould part can run out the lower bolster surface occasionally owing to the vibration of mould and the vacuum suction effect of going up the mould stripper plate, can directly run into the locating hole on the stripper plate of same position even a bit, causes the actuation that stripper plate and locating pin last, offset and striking, when the locating pin card dies on stripper plate, the mould will not normally open and shut, directly can lead to stripper plate and lower bolster to burst. The locating pin of going up the mould part also can appear the pin and become flexible to run down and get into the circumstances that takes off the flitch and cause the flitch card to die, and the template also can crack when serious.

A stamping die according to an embodiment of the present invention is described below with reference to fig. 1 to 9.

According to the present invention, a press mold includes a first mold 100, a first pin 300, a second mold 200, and a second pin 400.

The first mold 100 may be an upper mold portion of a press mold, or a lower mold portion of the press mold. When the first die 100 refers to an upper die portion of a stamping die, the second die 200 is a lower die portion of the stamping die; when the first die 100 is referred to as a lower die portion of a press die, the second die 200 is an upper die portion of the press die. For convenience of description, the first die 100 is defined as a lower die portion of a stamping die, and in this case, the first die 100 includes a lower die holder 110, a lower pad plate 120 and a lower die plate 130, and the second die 200 includes an upper die holder 210, an upper pad plate 220, an upper clamping plate 230, a stripper back plate 240 and a stripper plate 250.

It can be understood that, referring to fig. 1, 2, 4 and 6, in the stamping die of the present embodiment, the first die 100 is provided with the first through hole 140 penetrating along the mold closing direction for installing the first pin 300, and the lower die base 110, the lower bolster 120 and the lower die plate 130 are positioned by the interference fit of the first pin 300 and the first through hole 140.

It can be understood that, referring to fig. 1 to 7, a second die 200 cooperating with the first die 100 is provided, and the material is pressed by the cooperation of the first die 100 and the second die 200. Specifically, the lower die holder 110 of the first die 100 is mounted on the lower table of the punch press, the upper die holder 210 of the second die 200 is mounted on the upper table of the punch press, the stamping material is located between the lower die plate 130 and the stripper plate 250, the stripper plate 250 is provided with the insert of the stripper plate 250, and the lower die plate 130 is provided with the insert of the lower die plate 130. When the stamping die moves, the upper table surface of the punch press drives the second die 200 of the stamping die to move downwards for stamping, the stripper plate 250 is firstly pressed on the stamping material, and then the stamping material is punched and molded under the combined action of the insert of the stripper plate 250 and the insert of the lower die plate 130.

It is understood that, referring to fig. 2, in the stamping die of the present embodiment, the second die 200 is provided with the second through hole 260 penetrating in the die closing direction, and the second through hole 260 has the same hole diameter as the first through hole 140 and has the same hole axis. The second through hole 260 has the same aperture as the first through hole 140 and the hole axes coincide, which facilitates the positioning of the first mold 100 and the second mold 200 of the stamping mold.

It is understood that, referring to fig. 1, 4 and 5, in the stamping die of the present embodiment, a stripper plate 250 is disposed on a side of the second die 200 facing the first die 100, the stripper plate 250 is made of CR12MOV, the stripper plate 250 is used to place the inserts of the stripper plate 250, the position of the inserts is ensured to be accurate, and after the punch shearing is completed, the stripper plate 250 separates the punch from the stamping material by the force provided by the stripper spring.

It can be understood that, referring to fig. 1, fig. 4 and fig. 5, in the stamping die of the present embodiment, a material removing back plate 240 is disposed on a side of the material removing plate 250 facing away from the first die 100, and the material removing back plate 240 is made of CR12 and is used for fixing the inserts on the material removing plate 250 and bearing the concentrated stress generated during the production process of the formed inserts.

The second through hole 260 penetrates through the stripper plate 250 and the stripper back plate 240, the stripper plate 250 and the stripper back plate 240 are connected by a second pin 400 arranged in the second through hole 260, a first protrusion 410 is arranged on the side wall of the second pin 400, a first groove 270 communicated with the second through hole 260 is arranged between the stripper plate 250 and the stripper back plate 240, the first protrusion 410 extends into the first groove 270, and the second pin 400 is kept at a relatively unchanged position compared with the stripper plate 250 and the stripper back plate 240 through the matching of the first protrusion 410 and the first groove 270.

In the process of gradually opening the stamping die after stamping, a vacuum suction force is generated in the space between the first die 100 and the second die 200, the first pin 300 arranged in the first die 100 may run out of the surface of the first die 100, and since the hole diameters of the first through hole 140 and the second through hole 260 are the same and the hole axis positions of the first through hole 140 and the second through hole 260 are overlapped, the first pin 300 installed in the first through hole 140 may run into the second through hole 260, which may cause abnormal opening and closing of the die, and even cause the lower die and the stripper plate 250 to crack. The second pin 400 is arranged at the second through hole 260, and since the first protrusion 410 of the second pin 400 is installed in the first groove 270 arranged between the stripper plate 250 and the stripper back plate 240, the position of the second pin 400 relative to the stripper plate 250 and the stripper back plate 240 is fixed, and the second pin 400 does not move relative to the stripper plate 250 and the stripper back plate 240 due to the suction force when the stamping die is opened, so that the second pin 400 prevents the first pin 300 about to enter the second through hole 260 from continuing to enter the second through hole 260, the safety of the stamping die is improved, the stamping die can work at a higher speed, and the working efficiency of the stamping die is improved.

It will be appreciated that, with reference to fig. 2, 3, 4 and 7, in the present embodiment, in particular, the first protrusion 410 is disposed around the outer circumferential wall of the second pin 400, and the first recess 270 is disposed around the second through hole 260. Second pin 400 is installed in second through-hole 260, and first boss 410 encircles the periphery wall of second pin 400 and arranges, and first recess 270 encircles second through-hole 260 and arranges, makes first boss 410 and first recess 270 coaxial, facilitates the processing of first boss 410 and first recess 270, facilitates the cooperation of first boss 410 and first recess 270.

It can be understood that, referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 7, in this embodiment, specifically, the first protrusion 410 is a boss disposed on the outer peripheral wall of the second pin 400, and the first protrusion 410 may be a circular boss or a square boss surrounding the outer peripheral wall of the second pin 400, and the boss surrounds the outer peripheral wall of the second pin 400, so that the contact area between the boss and the first groove 270 is larger, and the larger contact area makes the assembly of the second pin 400 and the groove more stable.

It should be understood that, in other embodiments, the first protrusion 410 may also be a bump disposed on the outer wall of the second pin 400, the bump has a smaller contact area, the cavity volume required for the first groove 270 to match with the bump is smaller, and the first groove 270 with a smaller occupied area is formed on the stripper plate 240 or the stripper plate 250, which helps to increase the rigidity of the stripper plate 240 or the stripper plate 250.

It should be understood that in other embodiments, first protrusion 410 may be integrally formed with second pin 400, which may provide a higher degree of precision in mating second pin 400 with second through hole 260; the first protruding portion 410 and the second pin 400 can also be processed separately, for example, a groove matching the first protruding portion 410 is processed on the second pin 400, the produced first protruding portion 410 is embedded in the groove of the first protruding portion 410, the first protruding portion 410 and the second pin 400 are separately processed, when the shape and size of the first protruding portion 410 are not changed, the first protruding portion 410 matching the same shape and size is opened on the second pin 400, that is, the shape and size of the groove opened on the second pin 400 are not changed, so that for the second pin 400 with different sizes, redundant processing is not needed, and only the grooves with the same size and size are processed on the second pins 400 with different sizes for matching the first protruding portion 410, so that matching can be realized, the process flow is simplified, and the production cost of stamping dies with different sizes is saved.

It can be understood that the second pin 400 is made of SKD11, has a heat treatment hardness of Hrc58 ° to 60 °, and is machined by grinding with a lathe.

It can be understood that, referring to fig. 1 to 7, in this embodiment, specifically, the first groove 270 is disposed on a side of the stripper back plate 240 facing the first mold 100, the wall surface of the first protrusion 410 facing away from the first mold 100 is attached to the wall surface of the first groove 270 facing the first mold 100, the wall surface of the first protrusion 410 facing the first mold 100 is attached to the wall surface of the stripper plate 250 facing away from the first mold 100, and the wall surfaces of the first protrusion 410 facing away from the first mold 100 and the wall surfaces facing the first mold 100 are respectively attached to the stripper back plate 240 and the stripper plate 250, so that the stripper plate 250 and the stripper back plate 240 confine the first protrusion 410 therebetween, and therefore, during opening and closing of the stamping mold, the second pin 400 does not move relative to the stripper plate 250 and the stripper back plate 240, that is, the second pin 400 does not move relative to the second mold 200, so that the second pin 400 can beat back the moving first pin 300 to the original position.

It should be understood that, in other embodiments, the first groove 270 may be disposed on a side of the stripper plate 250 facing away from the first mold 100, where a wall surface of the first protrusion 410 facing away from the first mold 100 is attached to the stripper plate 240, a wall surface of the first protrusion 410 facing toward the first mold 100 is attached to a wall surface of the first groove 270 facing toward the stripper plate 240, and a wall surface of the first protrusion 410 facing away from the first mold 100 and a wall surface of the first protrusion 410 facing toward the first mold 100 are attached to a wall surface of the stripper plate 240 and a wall surface of the first groove 270 facing toward the stripper plate 240, respectively, so that the stripper plate 250 and the stripper plate 240 limit the first protrusion 410 therebetween, so that the second pin 400 does not move relative to the stripper plate 250 and the stripper plate 240 during opening and closing of the stamping mold, that is, the second pin 400 does not move relative to the second mold 200, and thus the second pin 400 can flap the moved first pin 300 back to the original position.

It should be understood that in other embodiments, the first groove 270 may be disposed between the stripper plate 240 and the stripper plate 250, when the wall surface of the first protrusion 410 facing the first mold 100 is attached to the wall surface of the first groove 270 facing the stripper plate 240, the wall surface of the first protrusion 410 facing away from the first mold 100 is attached to the wall surface of the first groove 270 facing the first mold 100, and the wall surface of the first protrusion 410 facing away from the first mold 100 and the wall surface facing the first mold 100 are attached to the stripper plate 240 and the stripper plate 250, respectively, so that the stripper plate 250 and the stripper plate 240 limit the first protrusion 410 therebetween, so that the second pin 400 does not move relative to the stripper plate 250 and the stripper plate 240, that is, the second pin 400 does not move relative to the second mold 200 during the opening and closing of the stamping mold, and thus the second pin 400 can shoot the moving first pin 300 back to the original position.

It is understood that, referring to fig. 1, 2, 3, 5 and 7, in the present embodiment, specifically, the first groove 270 is arranged at a distance from the peripheral wall surface of the second through hole 260 surrounding the peripheral wall surface of the second pin 400 surrounding the first protrusion 410. The wall surface of the first groove 270 facing the first mold 100 and the wall surface facing away from the first mold 100 are attached to the wall surface of the first protrusion 410 facing away from the first mold 100 and the wall surface facing the first mold 100, so that the second pin 400 does not move relative to the second mold 200 in the mold closing direction; second pin 400 is in interference fit with second through hole 260, and second through hole 260 penetrates second mold 200, so second pin 400 does not move relative to second mold 200 perpendicular to the mold closing direction, and therefore second pin 400 does not move relative to second mold 200. The circumferential wall surface of the first groove 270 surrounding the second through hole 260 and the circumferential wall surface of the first protrusion 410 surrounding the second pin 400 are arranged at intervals, so that the first protrusion 410 and the first groove 270 are convenient to assemble, the assembly accuracy of the first protrusion 410 and the first groove 270 is reduced, the processing technology of the first protrusion 410 and the first groove 270 is simplified, and the production cost is saved.

Of course, it can be understood that the first groove 270 and the first protruding portion 410 may also be in an interference fit, the interference fit between the first groove 270 and the first protruding portion 410 enables the first protruding portion 410 to be assembled with the second die 200 more stably, and the interference fit does not generate a gap between the first groove 270 and the first protruding portion 410, so as to facilitate increasing the rigidity of the second die 200, and enable the stamping die to be suitable for a wider range of stamping processes.

It is understood that, referring to fig. 1 and 5, in the present embodiment, specifically, the second die includes an upper die base 210, an upper pad plate 220, an upper clamping plate 230, a stripper back plate 240, and a stripper plate 250. The upper pad 220 is disposed on one side of the upper die holder 210 facing the first die 100, and the upper pad 220 is attached to the upper die holder 210; the upper clamp plate 230 is arranged on one side of the upper backing plate 220 facing the first mold 100, and the upper clamp plate 230 is attached to the upper backing plate 220; the stripper back plate 240 is arranged on one side of the upper clamping plate 230 facing the first mold 100, and the stripper back plate 240 is attached to the upper clamping plate 230; the stripper plate 250 is disposed on a side of the stripper back plate 240 facing the first mold 100, and the stripper plate 250 is attached to the stripper back plate 240.

It can be understood that the upper die base 210 is made of A3 and is used for placing an outer guide pillar, an inner guide pillar sleeve, a limiting pillar, a spring, an equal-height screw, a punch, a hook, a positioning pin, a fixing screw and a die.

It will be appreciated that the upper backing plate 220 is made of CR12 and is designed to withstand the forces experienced by the punch or insert during the stamping process, and to cause the wall upper die holder 210 to dent or deform.

It will be appreciated that the upper clamp plate 230 is made of 45 gauge steel, and that the upper clamp plate 230 is used to secure the various punches, inserts and inner guide posts, ensuring the functional position and accuracy of these parts.

It can be understood that, referring to fig. 1, fig. 2, fig. 4 and fig. 5, in this embodiment, specifically, the upper die holder 210, the upper pad plate 220, the upper clamping plate 230, the stripper back plate 240 and the stripper plate 250 are penetrated by the second through hole 260, and the third pin 500 is in interference fit with the second through hole 260 to connect the upper die holder 210, the upper pad plate 220, the upper clamping plate 230, the stripper back plate 240 and the stripper plate 250, that is, the upper die holder 210, the upper pad plate 220, the upper clamping plate 230, the stripper back plate 240 and the stripper plate 250 are positioned by the interference fit of the third pin 500 with the second through hole 260.

It should be understood that in other embodiments, the second mold 200 is provided with more than one second through hole 260, more than one third pin 500 for cooperating with the second through hole 260, and the cooperation of the plurality of third pins 500 with the second through holes 260 in the second mold 200 can make the positioning of the upper mold base 210, the upper cushion plate 220, the upper clamping plate 230, the stripper plate 240 and the stripper plate 250 more reliable.

It can be understood that, referring to fig. 1, 4 and 6, in the present embodiment, in particular, the first mold 100 includes a lower die base 110, a lower bolster 120 and a lower die plate 130. The lower backing plate 120 is arranged on one side of the lower die base 110 facing the second die 200 and is attached to the lower die base 110; the lower template 130 is disposed on one side of the lower pad plate 120 facing the second mold 200, and is attached to the lower pad plate 120.

It will be appreciated that the lower platen 130 is made of CR12MOV and is used to position the lower die insert to ensure the accuracy of the position of the stamping die in stamping the stamping material, while the lower platen 130 is used to withstand the side forces of stamping.

It will be appreciated that the lower backing plate 120 is made of CR12 and needs to be quenched to withstand the forces generated during the stamping of the lower die insert and to prevent the lower die base 110 from sagging or deforming.

It can be understood that the lower die base 110 is made of A3, and does not need to be subjected to heat treatment, and the lower die base 110 has no special requirement on the hardness thereof and is used for placing an outer guide pillar, a limiting pillar, a lifting hook, a floating and lifting dual-purpose pin and a fixing screw.

It can be understood that, referring to fig. 1, fig. 2, fig. 4 and fig. 6, in this embodiment, specifically, the lower die base 110, the lower pad plate 120 and the lower die plate 130 are penetrated by the first through hole 140, the first pin 300 is disposed in interference fit with the first through hole 140, and the first pin 300 is connected to the lower die base 110, the lower pad plate 120 and the lower die plate 130, that is, the lower die base 110, the lower pad plate 120 and the lower die plate 130 are positioned by the interference fit of the first pin 300 and the first through hole 140.

It should be understood that in other embodiments, the first mold 100 is provided with more than one first through hole 140, the first pin 300 for cooperating with the first through hole 140 is provided with more than one first pin 300, and the cooperation of the plurality of first pins 300 and the first through holes 140 in the first mold 100 can ensure that the lower die base 110, the lower bolster 120 and the lower die plate 130 are positioned more firmly.

It can be understood that, referring to fig. 1, fig. 2, fig. 4, fig. 5 and fig. 6, in the present embodiment, specifically, the end surface of the first pin 300 facing the second mold 200 is flush with the surface of the first mold 100 facing the second mold 200, and the end surface of the second pin 400 facing the first mold 100 is flush with the surface of the stripper plate 250 facing the first mold 100. By doing so, the side of the second through hole 260 facing the first mold 100 does not have a cavity, so the first pin 300 does not enter the second through hole 260 even after being sucked out. In the clamped state, the end surface of second pin 400 facing first mold 100 abuts first pin 300, and even if first pin 300 is sucked out, first pin 300 is returned to the original position by second pin 400 during clamping.

On the premise of providing the first through hole 140 and the second through hole 260 which have the same aperture and the coincident hole axes, the second pin 400 is arranged in the second through hole 260, so that the first die 100 and the second die 200 can be conveniently positioned, and the safety of the stamping die is ensured.

It can be understood that, referring to fig. 1, fig. 2, fig. 4 and fig. 5, in this embodiment, specifically, the end surface of the third pin 500 facing the first mold 100 is flush with the surface of the upper clamping plate 230 facing the first mold 100, and the end surface of the second pin 400 facing away from the first mold 100 is flush with the surface of the stripper back plate 240 facing away from the first mold 100. In the clamped state, the end surface of second pin 400 facing away from first mold 100 abuts third pin 500, and even if third pin 500 is sucked out, third pin 500 is returned to the original position by second pin 400 during clamping.

It should be understood that in other embodiments, the aperture of the hole segment of the second through hole 260 located on the upper die holder 210, the upper backing plate 220, and the upper clamping plate 230 may be slightly larger than the aperture of the hole segment of the second through hole 260 located on the stripper back plate 240 and the stripper plate 250, the aperture of the hole segment of the second through hole 260 located on the upper die holder 210, the upper backing plate 220, and the upper clamping plate 230 may be slightly larger than the aperture of the hole segment of the second through hole 260 located on the stripper plate 250 and the stripper back plate 240, and the first pin 300 and the third pin 500 may be arranged to be in interference fit with the first through hole 140 and the second through hole 260, respectively. With this arrangement, even if the first pin 300 is sucked out of the first mold 100 during mold opening, the first pin 300 does not enter the second through hole 260 during mold closing, and even if the third pin 500 tends to move toward the first mold 100 during mold opening, the movement is blocked by the stripper back plate 240, thereby improving the safety of the press mold.

It should be understood that, referring to fig. 8, in other embodiments, the sidewall of the first pin 300 may be provided with a second protrusion 310, a second groove 150 communicating with the first through hole 140 is provided between the lower mold plate 130 and the lower bolster 120, and the second protrusion 310 extends into the second groove 150. By arranging the second protrusion 310 on the first pin 300, since the second protrusion 310 of the first pin 300 is mounted in the second groove 150 arranged between the lower template 130 and the lower template 120, the position of the first pin 300 relative to the lower template 130 and the lower template 120 is fixed, and therefore, the first pin 300 does not move relative to the first die 100 in the process of opening the die, and the safety of the die is improved.

It should be understood that, referring to fig. 9, in other embodiments, the sidewall of the third pin 500 may be provided with a third protrusion 510, a third groove 280 communicating with the second through hole 260 is provided between the upper clamping plate 230 and the upper shim plate 220, and the third protrusion 510 extends into the third groove 280. By providing the third protrusion 510 on the third pin 500, since the third protrusion 510 of the third pin 500 is mounted in the third groove 280 provided between the upper plate 230 and the upper plate 220, the position of the third pin 500 relative to the upper plate 230 and the upper plate 220 is fixed, and therefore, the third pin 500 does not move relative to the second die 200 during the process of opening the die, thereby improving the safety of the die.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A stamping die, comprising:

the first die is provided with a first through hole penetrating through the first die along a die assembly direction;

the first pin is in interference fit with the first through hole;

the second die is matched with the first die and provided with a second through hole penetrating through the second die along a die assembly direction, the aperture of the second through hole is the same as that of the first through hole, the axes of the second through hole and the first through hole are coincident, one side of the second die facing the first die is provided with a stripper plate, one side of the stripper plate, which is far away from the first die, is provided with a stripper back plate, and the second through hole penetrates through the stripper plate and the stripper back plate;

the second pin is in interference fit with the second through hole and is connected with the stripper plate and the stripper back plate;

the second pin deviates from the end part of the first pin extends to the end face position of the stripping back plate deviates from the first die, a first protruding part is arranged on the side wall of the second pin, a first groove communicated with the second through hole is formed between the stripping plate and the stripping back plate, and the first protruding part extends into the first groove.

2. The stamping die of claim 1, wherein the first protrusion is disposed around the outer peripheral wall of the second pin, the first groove is disposed around the second through hole, the first groove is disposed on a side of the stripper plate facing the first die, or the first groove is disposed on a side of the stripper plate facing away from the first die, or the first groove is disposed between the stripper plate and the stripper plate.

3. The stamping die according to claim 2, wherein when the first groove is disposed on a side of the stripper plate facing the first die, a wall surface of the first protrusion facing away from the first die is attached to a wall surface of the first groove facing the first die; when the first groove is arranged on one side of the stripper plate, which is far away from the first mold, the wall surface of the first bulge, which faces the first mold, is attached to the wall surface of the first groove, which faces the stripper plate; when the first groove is arranged between the stripping back plate and the stripping plate, the wall surface of the first mold, facing the stripping back plate, of the first bulge is attached to the wall surface of the first groove, and the wall surface of the first mold, facing away from the first bulge, of the first bulge is attached to the wall surface of the first groove, facing the first mold.

4. The press die according to claim 3, wherein the first recess is arranged around the peripheral wall surface of the second through hole at a distance from the first protrusion around the peripheral wall surface of the second pin.

5. The stamping die of claim 1, wherein the second die further comprises an upper clamping plate, an upper backing plate and an upper die base, wherein the upper backing plate is arranged on one side of the upper die base facing the first die and attached to the upper die base; the upper clamping plate is arranged on one side, facing the first mold, of the upper base plate and is attached to the upper base plate; the stripping back plate is arranged on one side, facing the first mold, of the upper clamping plate and is attached to the upper clamping plate; the stripper plate is arranged on one side of the stripper back plate, which faces the first mold, and is attached to the stripper back plate; the upper die holder, the upper base plate, the upper clamping plate, the stripping back plate and the stripping plate are penetrated through by the second through hole.

6. The stamping die of claim 5, further comprising a third pin, wherein the third pin is in interference fit with the second through hole, and the third pin connects the upper die base, the upper backing plate, and the upper clamping plate.

7. The stamping die of claim 1, wherein the first die comprises a lower die holder, a lower backing plate and a lower die plate, the lower backing plate is arranged on one side, facing the second die, of the lower die holder and is attached to the lower die holder; the lower template is arranged on one side, facing the second die, of the lower backing plate and is attached to the lower backing plate; the lower die base, the lower backing plate and the lower template are penetrated through by the first through hole, and the first pin is connected with the lower die base, the lower backing plate and the lower template.

8. The stamping die of claim 6, wherein the end surface of the first pin facing the second die is flush with the surface of the first die facing the second die, the end surface of the third pin facing the first die is flush with the surface of the upper clamping plate facing the first die, the end surface of the second pin facing away from the first die is flush with the surface of the stripper plate facing away from the first die, the end surface of the second pin facing the first die is flush with the surface of the stripper plate facing the first die, and the end surfaces of the second pin facing the first die and the end surfaces of the second pin facing away from the first die are respectively in abutment with the end surfaces of the first pin and the third pin.

9. The stamping die of claim 7, wherein the first pin has a second protrusion on a side wall thereof, a second groove communicating with the first through hole is provided between the lower die plate and the lower backing plate, and the second protrusion extends into the second groove.

10. The stamping die of claim 6, wherein the third pin sidewall is provided with a third protrusion, a third groove communicated with the second through hole is provided between the upper clamping plate and the upper backing plate, and the third protrusion extends into the third groove.

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