CN217223223U

CN217223223U - Modularization stamping die

Info

Publication number: CN217223223U
Application number: CN202123317582.0U
Authority: CN
Inventors: 马鑫鑫
Original assignee: Kunshan Changying Precision Technology Co ltd
Current assignee: Kunshan Changying Precision Technology Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-08-19
Anticipated expiration: 2031-12-27

Abstract

The utility model provides a modularization stamping die, including stamping die, stamping die includes the lower mould, the last mould that is relative to the lower mould up-and-down motion, the lower mould includes the lower bolster that is located the top at least, last mould include at least with the lower bolster cooperation and be located take off the flitch of lower bolster top, be located take off the splint of flitch top, modularization stamping die further includes the waste material excision module of installing on stamping die's module installation face, waste material excision module includes at least the lower tool bit of installing on the module installation face of lower bolster and installs the excision drift on the module installation face of splint, the upper end front side of lower tool bit is provided with cutting part, the lower extreme inboard of excision drift is provided with die-cut portion, the cutting part of lower tool bit with the die-cut portion of excision drift corresponds the cooperation from top to bottom, the cutting punch moves up and down along with the clamping plate so as to cut the material strips of the waste materials with the lower cutter head.

Description

Modularization stamping die

Technical Field

The utility model relates to a stamping die technical field especially relates to a stamping die with waste material excision module.

Background

In metal stamping forming's manufacturing field, stamping die uses very extensively to in the stamping process that has little five-metal spare is born to the metal material area, little five-metal spare breaks away from the back from the metal material area, and the continuous material area waste material of formation can be followed stamping die's one side and pushed out in succession, needs to collect the material area waste material. However, in the prior art, manual folding or storage by using a material receiving machine is usually required, the manual folding requires extra labor cost, the sharp edge of the material belt waste is very easy to hurt people, the material receiving machine occupies a limited production space, and the cost of waste recovery is increased, so a new stamping die design is required to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a stamping die with waste material excision module, its material area waste material that aims at solving current stamping die and produces accomodates difficulty, the higher difficult problem of cost, reduces the degree of difficulty that the waste material was accomodate in the material area, also improves the commonality of waste material excision module, effectively reduces use cost.

In order to achieve the above purpose, the utility model provides a scheme is: the utility model provides a modularization stamping die, includes stamping die, stamping die includes the lower mould, for the last mould of lower mould up-and-down motion, the lower mould includes the lower bolster that is located the top at least, go up the mould and include at least with the lower bolster cooperation and be located the flitch of taking off of lower bolster top, be located the splint that takes off the flitch top, modularization stamping die further includes the waste material excision module of installing on stamping die's module installation face, waste material excision module includes at least the lower tool bit of installing on the module installation face of lower bolster and installs the excision drift on the module installation face of splint, the upper end front side of lower tool bit is provided with cutting part, the lower extreme inboard of excision drift is provided with die-cut portion, the cutting part of lower tool bit with the corresponding cooperation from top to bottom of excision drift, the cutting punch moves up and down along with the clamping plate so as to cut the material strips of the waste materials with the lower cutter head.

Further, the utility model discloses modularization stamping die the module installation face of lower bolster has and runs through on the up-down direction the first mounting groove of lower bolster, down the tool bit from top to bottom install in the first mounting groove, when observing from the top down, first mounting groove has and is close to inboard first chamber and the intercommunication of acceping first chamber and external first opening of acceping, the tool bit include down with first chamber complex first cooperation portion, the packing of acceping first opening and outwards surpass the first outer convex part of the module installation face of lower bolster, the cutting position in the upper end front side of outer convex part.

Further, the utility model discloses modularization stamping die is when observing downwards from the top, first opening is less than in the front rear direction first accept the chamber with jointly forming "T" word shape structure, first inside wall of accepting the chamber is provided with asymmetric wall, the first cooperation portion and the first outer convex part of lower tool bit form together in "T" word shape structure that first mounting groove corresponds, first mounting groove diminishes gradually from the top down, the whole structure that is little about big that is of lower tool bit.

Further, the utility model discloses modularization stamping die the module installation face of splint has the mounting hole, the mounting hole with correspond the setting from top to bottom in the first mounting groove, the excision drift is for extending the vertical form bar structure that forms along upper and lower direction, the excision drift passes through the bolt fastening in the mounting hole.

Furthermore, the scrap cutting module of the modular stamping die of the present invention further comprises a fixing seat mounted on the module mounting surface of the stripper plate, when viewed from top to bottom, the module mounting surface of the stripper plate has a second mounting groove penetrating through the stripper plate in the top-to-bottom direction, the fixing seat is mounted in the second mounting groove from top to bottom, the second mounting groove has a second receiving cavity near the inner side and a second opening communicating the second receiving cavity with the outside, a step portion is further formed on the inner wall surface of the second receiving cavity, the fixing seat comprises a second fitting portion fitting with the second receiving cavity, a second outer protrusion filling the second opening and outwardly exceeding the module mounting surface of the stripper plate, the second fitting portion comprises a positioning through groove penetrating through the second outer protrusion from top to bottom and a butting portion abutting against the step portion downward, the cutting punch penetrates through the positioning through groove from top to bottom.

Further, the utility model discloses modularization stamping die is when from the top down observation, the second is acceptd the chamber and is less than the second opening, the second is acceptd the chamber and is the forked tail structure, second cooperation portion also is the forked tail structure.

Further, the utility model discloses modularization stamping die is when from the top down observation, the location leads to the groove including being close to take off the first forked tail of the module installation face of flitch lead to the groove, with first forked tail leads to the groove intercommunication and keeps away from take off the square through groove of the module installation face of flitch and be located first forked tail leads to the groove and is close to take off the inner wall of the module installation face of flitch and follow the second forked tail that the upper and lower direction extends and lead to the groove, the excision drift include with square fixed part that the groove is slided to join in marriage, with the swallow tail portion that the groove is slided to join in marriage in first forked tail and lead to the groove die-cut portion that the groove is slided to join in marriage with the second forked tail.

Further, the utility model discloses modularization stamping die the waste material excision module is further including being located the excision drift with the gasket between the module installation face of splint, the concave third forked tail that is equipped with the die-cut portion sliding fit of excision drift leads to the groove in the outside surface of gasket.

Further, the utility model discloses the outer convex part of shown second of modularization stamping die still is provided with two fixed orificess, the waste material excision module further includes two pilot pins, the pilot pin install respectively in two fixed orificess, the free end of two pilot pins surpasss downwards the lower extreme of fixing base, the tool bit is still including running through from top to bottom down a pair of locating hole of tool bit down, the free end of two pilot pins inserts respectively downwards in a pair of locating hole.

Further, the utility model discloses modularization stamping die the fixing base is followed take off flitch up-and-down motion.

Compared with the prior art, the utility model discloses modularization stamping die is in stamping die has set up a waste material excision module, waste material excision module utilizes stamping die cuts continuous material area waste material in the lump in the action repeatedly of stamping process, and the material area waste material after cutting is a plurality of shorter waste material lamellar bodies, collects it more easily, has avoided adding alone the manual work or has received material machine etc. effectively reduced manufacturing cost. In addition, the waste material excision module is installed in one side of stamping die, and it not only has fixed firm and does not need extra power to cut the advantage, still has the commonality to stamping die of the same type, and the practicality is strong and economic effect is huge.

Drawings

Fig. 1 is a schematic perspective view of the modular stamping die of the present invention when the upper die and the lower die are not combined;

fig. 2 is a schematic perspective view of the modular stamping die of the present invention when the upper die and the lower die are combined;

fig. 3 is a schematic perspective view of a scrap cutting module of the modular stamping die of the present invention;

fig. 4 is an exploded perspective view of a scrap removal module of the modular stamping die of the present invention;

fig. 5 is an exploded perspective view of the scrap removal module of the modular stamping die of the present invention viewed from another direction;

fig. 6 is a top view of the modular stamping die of the present invention, viewed from the top down, after the lower template and the lower tool bit are disassembled;

fig. 7 is a top view of the modular stamping die of the present invention, viewed from the top down, after the stripper plate, the fixing base and the positioning pin are disassembled;

fig. 8 is a top view of the clamp plate, the cutting punch, the spacer and the bolt of the modular stamping die of the present invention, viewed from the top down after being disassembled;

fig. 9 is a partial cross-sectional view of the modular stamping die of the present invention, showing a positioning pin positioning strip;

FIG. 10 is a partial cross-sectional view of the modular press die of FIG. 2 as viewed from the side;

fig. 11 is a perspective view of a slug body.

The meaning of the reference symbols in the drawings is:

a modular stamping die-100; a stamping die-10; a lower die holder-11; a lower backing plate-12; a lower template-13; a first mounting groove-21; a first receiving cavity-22; a first opening-23; an asymmetric wall-211; a stripper plate-14; a second mounting groove-31; a second receiving cavity-32; a second opening-33; a step-34; backing off-15; a clamping plate-16; mounting holes-35; an upper backing plate-17; an upper die holder-18; module mounting face-19; material belt waste-F; material bar-L; -scrap pieces-P; a waste material cutting module-40; a lower tool bit-5; a first fitting portion-51; a first male portion-52; a cut-out portion-53; positioning hole-54; a fixed seat-6; a second fitting portion-61; a second male protrusion-62; a fixing hole-63; a positioning through groove-64; an abutment-65; a first dovetail channel-66; a square through slot-67; a second dovetail through slot-68; bolt-7; cutting off the punch-8; a fixed part-81; dovetail-82; a blanking section-83; a shim-86; a third dovetail through slot-87; a positioning needle-9;

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Regarding the limitation of the direction, the present invention defines the front and rear direction, the transverse direction perpendicular to the front and rear direction, and the up and down direction (vertical direction, longitudinal direction) perpendicular to the front and rear direction and the transverse direction, respectively. The utility model discloses in about the limited of direction, all regard figure 1 as the standard, define the front end that module installation face 19 is located stamping die 10 in figure 1.

Referring to fig. 1 to 10, the present invention provides a modular stamping die 100, which includes a stamping die 10 and a scrap cutting module 40 installed on the stamping die.

Referring to fig. 1, 2, and 6 to 10, the stamping die 10 includes a lower die base 11, a lower backing plate 12, a lower die plate 13, a stripper plate 14, a stripper plate 15, a clamping plate 16, an upper backing plate 17, and an upper die base 18, which are sequentially disposed from bottom to top. The lower die holder 11, the lower backing plate 12 and the lower die plate 13 are collectively referred to as a lower die of the stamping die 10, and the stripper plate 14, the stripper plate 15, the clamping plate 16, the upper backing plate 17 and the upper die holder 18 are collectively referred to as an upper die of the stamping die 10.

Referring to fig. 1, a module mounting surface 19 is defined on a side of the stamping die 10 from which the scrap tape material F is ejected.

Referring to fig. 1, 2 and 6, the module mounting surface 19 of the lower template 13 has a first mounting groove 21 penetrating through the lower template in the vertical direction. The first mounting groove 21 is opened outward in the front-rear direction. When viewed from the top down, the first mounting groove 21 has a first receiving cavity 22 laterally close to the inner side and a first opening 23 communicating the first receiving cavity 22 with the outside, and the first opening 23 is smaller than the first receiving cavity 22 in the front-back direction to form a T shape together. The inner side wall of the first accommodating cavity 22 is provided with an asymmetric wall surface 211, so that the first accommodating cavity 22 is of an asymmetric structure, and a fool-proof effect in the installation process is achieved. The first mounting groove 21 is gradually reduced from top to bottom to form a bell-mouthed structure.

Referring to fig. 1, 2 and 7, the module mounting surface 19 of the stripper plate 14 has a second mounting groove 31 penetrating the lower mold plate in the vertical direction. The second mounting groove 31 is vertically corresponding to the first mounting groove 21. The second mounting groove 31 is opened outward in the front-rear direction. When viewed from the top to the bottom, the second mounting groove 31 has a second receiving cavity 32 laterally close to the inner side and a second opening 33 communicating the second receiving cavity 32 with the outside, the second receiving cavity 32 is smaller than the second opening 33, and the second receiving cavity 32 is in a dovetail structure. A step portion 34 is further formed on the inner wall surface of the second housing chamber 32.

Referring to fig. 1, 2 and 8, the module mounting surface 19 of the clamping plate 16 has mounting holes 35 arranged in the front-rear direction. The mounting hole 35 is vertically and correspondingly disposed to the first mounting groove 21 and the second mounting groove 31.

In the use process of the stamping die 10, the lower die is fixed on a bracket of a punch (not shown), and the upper die reciprocates up and down along with the punch. When the upper die moves downward, the stripper plate 14 first contacts downward against the lower die plate 13 to hold it against the strip of material. Then, the stripper plate 15, the clamping plate 16, the upper backing plate 17 and the upper die base 18 move downward together, so that the stripper plate 15 contacts the stripper plate 14 downward, and a die punch (not shown) carried by the clamping plate 16 performs punching cutting on the material belt. When the upper die moves upwards, the stripper plate 15 firstly moves upwards to leave the stripper plate 14, and then the stripper plate 14 moves upwards to leave the lower die plate 13. Since the stamping die is a common die and tool in the stamping process, and the invention aims at the waste material cutting module with universality, the working process of the stamping die related to the utility model is not described in detail.

Referring to fig. 1 to 10, the scrap cutting module 40 includes a lower blade 5 fixed to the first mounting groove 21, a fixing seat 6 fixed to the second mounting groove 31, a cutting punch 8 fixed to the mounting hole 35 by a bolt 7, and two positioning pins 9.

Referring to fig. 3 to 6, the lower cutting head 5 is integrally configured to be small at the bottom and large at the top, and is installed in the first installation groove 21 from the top to the bottom to be fixed on the module installation surface 19 of the lower template 13. The lower tool bit 5 and the first mounting groove 21 with a bell-mouthed structure can prevent the lower tool bit 5 from moving downwards and falling off. When viewed from the top down, the lower tool bit 5 is of a T-shaped structure, and the lower tool bit 5 includes a first fitting portion 51 fitting with the first accommodating cavity 22 in a foolproof manner, a first outer protrusion 52 filling the first opening 23 and extending outward beyond the module mounting surface 19 of the lower template 13, and a cutting portion 53 located at the upper end of the front side of the outer protrusion 51. The lower tool bit 5 further includes a pair of positioning holes 54 vertically penetrating the lower tool bit 5.

Referring to fig. 3 to 5 and 7, the fixing seat 6 is installed in the second installation groove 31 from top to bottom, and is fixed on the module installation surface 19 of the stripper plate 14. The fixing base 6 includes a second fitting portion 61 that fits into the second receiving cavity 32, and a second outward protruding portion 62 that fills the second opening 33 and protrudes outward beyond the module mounting surface 19 of the stripper plate 14, when viewed from the top down. The second outward protruding portion 62 is further provided with a fixing hole 63 and a positioning through groove 64 which vertically penetrate through the second outward protruding portion 62. The fixing holes 63 are provided in a pair and are provided at the position where the second outward protruding portion 62 is located at the second opening 33. The positioning channel 64 is disposed at a location where the second outward protrusion 62 extends outward beyond the module mounting surface 19 of the stripper plate 14. The second engaging portion 61 includes an abutting portion 65 abutting against the step portion 34 downward to prevent the fixing base 6 from moving downward and falling off.

The positioning through-groove 64 includes, when viewed from the top down, a first dovetail through-groove 66 close to the module mounting surface 19 of the stripper plate 14, a square through-groove 67 communicating with the first dovetail through-groove 66 and far away from the module mounting surface 19 of the stripper plate 14, and a second dovetail through-groove 68 located on an inner wall of the first dovetail through-groove 66 close to the module mounting surface 19 of the stripper plate 14 and extending in the up-down direction.

Referring to fig. 3 to 5, 7 and 9, the two positioning pins 9 are respectively fixed in a pair of fixing holes 63 of the fixing base 6. The two positioning needles 9 reciprocate up and down together with the fixed seat 6 and the stripper plate 14. The free ends of the two positioning pins 9 extend downwards beyond the lower end of the fixed seat 6. During the downward contact of the stripper plate 14 with the lower die plate 13, the two positioning pins 9 are respectively inserted into the pair of positioning holes 54 of the lower cutter head 5.

Referring to fig. 3 to 5, 8 and 10, the cutting punch 8 is a vertical strip-shaped structure extending in the up-down direction. The cutting punch 8 includes a square fixing portion 81 slidably fitted to the square through groove 67, a dovetail portion 82 slidably fitted to the first dovetail through groove 66, and a die-cut portion 83 slidably fitted to the second dovetail through groove 68, as viewed in the top-down direction. Because the shapes of all the through grooves in the positioning through grooves 64 of the fixed seat 6 and all the parts of the cutting punch 8 which are matched with the through grooves in an up-and-down sliding mode are different, stable limiting in other directions except the up-and-down direction is realized, and the up-and-down accurate movement of the cutting punch 8 is ensured. A cutting action is formed between the punching portion 83 and the cutting portion 53 of the lower cutter 5 to cut the tape waste F.

A spacer 86 is provided between a position of the cutting punch 8 through which the bolt 7 passes in the transverse direction and the module mounting surface 19 of the clamping plate 16, so that the cutting punch 8 is laterally spaced out of the module mounting surface 19 of the clamping plate 16 and the cutting punch 8 is vertically engaged with the positioning through groove 64. The cutting punch 8 moves up and down with the clamp plate 16. The outer side surface of the spacer 86 is recessed with a third dovetail through-groove 87 that is slidably fitted with the blanking portion 83 of the cutting punch 8. The third dovetail through groove 87 and the second dovetail through groove 68 vertically correspond to each other and limit the punching portion 83 of the cutting punch 8 together. Because the cutting punch 8 is fixed on the clamping plate 16 through the bolt 7, the cutting punch 8 is well positioned in the transverse direction, and the up-and-down movement of the cutting punch 8 is effectively limited through the gasket 86 and the fixed seat 6.

It should be noted that, since the strip is continuous, even the strip scrap F may still leave a continuous strip L extending along the axial direction of the strip, in general, one or two strips L are located at the outermost side of the strip scrap F, in this embodiment, two strips L are defined, and two scrap cutting modules 40 corresponding to the two strips L are cut and are both disposed on the module mounting surface 19 of the stamping die 10. Of course, because the design of the material belt is various, the situation that the number of the material strips L of the material belt waste F is greater than two is also more common, and because the number of the waste cutting modules 40 is set according to the number of the material strips L, only the two are needed to be corresponding, and the description is omitted here.

Referring to fig. 1, 2, 9 and 10, the scrap cutting module 40 cuts the tape scrap F, in which the tape scrap F after punching out the product is moved in the direction of the module mounting surface 19 to be exposed and suspended outside the module mounting surface 19, and the free end below the cutting punch 8 is located in the positioning through slot 64 of the fixing base 6. Then, when the upper die moves downwards again, the stripper plate 14 presses the material tape waste F downwards, in the process, the two positioning pins 9 fixed on the stripper plate 14 position the corresponding material strips L, so that the material strips L are fixed between the positioning pins 9, and the two positioning pins 9 are inserted into the corresponding positioning holes 54, at this time, the material strips L are located above the cutting portion 53 of the lower tool bit 5. With the further downward movement of the upper die, the cutting punch 8 fixed to the upper die moves downward in the positioning through groove 64, and finally, the inner side of the lower end of the cutting part-83 of the cutting punch 8 and the outer side of the upper end of the cutting part 53 complete the cutting action of the material strip L, and the material strip waste F exposed outwards and suspended outside the module mounting surface 19 falls off accordingly.

Compared with the prior art, the utility model discloses modularization stamping die 100 stamping die 10 has set up a waste material excision module 40, waste material excision module 40 utilizes stamping die 10 cuts continuous material area waste material F in the lump in the action repeatedly of stamping process, and the material area waste material F after cutting is a plurality of shorter waste material lamellar bodies P (please refer to fig. 11), collects it more easily, has avoided addding alone artifical or receipts material machine etc. has effectively reduced manufacturing cost. In addition, the scrap cutting module 40 is installed on one side of the stamping die 10, so that the scrap cutting module not only has the advantages of firm fixation and cutting without additional power, but also has the universality for stamping dies of the same type, and is strong in practicability and great in economic effect.

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

The above examples only represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A modularization stamping die comprises a stamping die, the stamping die comprises a lower die and an upper die moving up and down relative to the lower die, the lower die at least comprises a lower template positioned at the top, the upper die at least comprises a stripper plate matched with the lower template and positioned above the lower template and a clamping plate positioned above the stripper plate, and the modularization stamping die is characterized by further comprising a waste material cutting module arranged on a module mounting surface of the stamping die, the waste material cutting module at least comprises a lower tool bit arranged on the module mounting surface of the lower template and a cutting punch arranged on the module mounting surface of the clamping plate, the front side of the upper end of the lower tool bit is provided with a cutting part, the inner side of the lower end of the cutting punch is provided with a punching part, and the cutting part of the lower tool bit is vertically and correspondingly matched with the cutting part of the cutting punch, the cutting punch moves up and down along with the clamping plate so as to cut the material strips of the waste materials with the lower cutter head.

2. The modular stamping die of claim 1, wherein the module mounting surface of the lower die plate has a first mounting groove extending through the lower die plate in the up-down direction, the lower tool bit is mounted in the first mounting groove from top to bottom, the first mounting groove has a first accommodating cavity near the inner side and a first opening communicating the first accommodating cavity with the outside when viewed from top to bottom, the lower tool bit includes a first fitting portion fitting with the first accommodating cavity, a first outer protrusion filling the first opening and extending outward beyond the module mounting surface of the lower die plate, and the cutting portion is located on the front side of the upper end of the outer protrusion.

3. The modular stamping die according to claim 2, wherein, when viewed from top to bottom, the first opening is smaller than the first receiving cavity in the front-rear direction so as to form a T-shaped structure together, the inner side wall of the first receiving cavity is provided with an asymmetric wall surface, the first matching portion of the lower tool bit and the first outer protrusion form a T-shaped structure corresponding to the first mounting groove together, the first mounting groove gradually decreases from top to bottom, and the lower tool bit as a whole has a structure with a smaller bottom and a larger top.

4. The modular press mold according to claim 2, wherein the module mounting surface of the clamping plate has a mounting hole which is vertically arranged corresponding to the first mounting groove, the cutting punch has a vertical bar-shaped structure formed by extending in an up-down direction, and the cutting punch is fixed to the mounting hole by a bolt.

5. The modular stamping die according to claim 1, wherein the scrap cutting module further includes a fixing seat mounted on the module mounting surface of the stripper plate, the module mounting surface of the stripper plate has a second mounting groove penetrating the stripper plate in the up-down direction when viewed from the top, the fixing seat is mounted in the second mounting groove from the top to the bottom, the second mounting groove has a second receiving cavity near the inner side and a second opening communicating the second receiving cavity with the outside, a step portion is further formed on the inner wall surface of the second receiving cavity, the fixing seat includes a second fitting portion fitting with the second receiving cavity, a second outward protruding portion filling the second opening and protruding outward beyond the module mounting surface of the stripper plate, the second fitting portion includes a positioning through groove penetrating the second outward protruding portion in the up-down direction and an abutting portion abutting against the step portion in the down direction, the cutting punch penetrates through the positioning through groove from top to bottom.

6. The modular stamping die according to claim 5, wherein the second receiving cavity is smaller than the second opening when viewed from above, the second receiving cavity is of a dovetail configuration, and the second mating portion is of a dovetail configuration.

7. The modular stamping die of claim 5, wherein, when viewed from top to bottom, the positioning through grooves comprise a first dovetail through groove close to the module mounting surface of the stripper plate, a square through groove communicated with the first dovetail through groove and far away from the module mounting surface of the stripper plate, and a second dovetail through groove located on the inner wall of the first dovetail through groove close to the module mounting surface of the stripper plate and extending in the up-down direction, and the cutting punch comprises a square fixing portion in sliding fit with the square through groove, a dovetail portion in sliding fit with the first dovetail through groove, and a punching portion in sliding fit with the second dovetail through groove.

8. The modular punch die of claim 7 wherein the scrap cutting module further includes a shim between the cutting punch and the module mounting face of the clamp plate, the shim having an outer side surface recessed with a third dovetail channel that mates with the cutting portion of the cutting punch.

9. The modular stamping die according to claim 5, wherein the second outer convex portion is further provided with two fixing holes, the scrap cutting module further comprises two positioning pins, the positioning pins are respectively installed in the two fixing holes, free ends of the two positioning pins extend downwards beyond the lower end of the fixing seat, the lower tool bit further comprises a pair of positioning holes vertically penetrating through the lower tool bit, and free ends of the two positioning pins are respectively inserted downwards into the pair of positioning holes.

10. A modular stamping die as claimed in claim 5, wherein the fixing base moves up and down with the stripper plate.