CN111468593A

CN111468593A - Blanking die capable of conveniently replacing die core

Info

Publication number: CN111468593A
Application number: CN202010332719.0A
Authority: CN
Inventors: 盛黎明; 胡双元; 胡志敏
Original assignee: Shenzhen Gangyuan Micro Key Technology Co ltd
Current assignee: Shenzhen Gangyuan Micro Key Technology Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-07-31

Abstract

The invention relates to a blanking die capable of conveniently replacing a die core, which comprises an upper die and a lower die; the upper die comprises an upper die plate, an upper fixed plate group fixedly connected to the lower side of the upper die plate, a stripping plate group arranged below the upper fixed plate group, a stripping spring for pushing the upper fixed plate group and the stripping plate group to be away from each other, and a stripping bolt, wherein the stripping plate group is hoisted on the upper die plate through the stripping bolt; the lower side of the stripping plate group is detachably embedded with stripping core blocks; a punch fixing block is detachably embedded at the lower side of the upper fixing plate group, a punch is fixed on the punch fixing block, and the punch penetrates through the stripper plate group and the stripper core block; the lower die comprises a lower die plate, a lower backing plate and a knife edge fixing plate which are fixedly connected in sequence from bottom to top, a concave die block is embedded in the middle of the knife edge fixing plate, a first blanking hole matched with the punch is formed in the concave die block, a second blanking hole communicated with the first blanking hole is formed in the lower backing plate, and a cavity is formed in the middle of the lower die plate. The invention has the effect of reducing the mold cost of manufacturers.

Description

Blanking die capable of conveniently replacing die core

Technical Field

The invention relates to the technical field of blanking dies, in particular to a blanking die with a conveniently replaceable die core.

Background

When the micro light-touch switch is produced, firstly, a punching machine and a corresponding die are used for punching and processing a copper material belt so as to process the copper material belt into a terminal material belt (namely the material belt with the micro light-touch switch terminal), then, a light-touch switch base is injected on the terminal material belt, then, an elastic sheet, a button and an upper cover are sequentially additionally arranged on the light-touch switch base, and finally, the formed light-touch switch is cut off from the terminal material belt.

Because the terminal material belts corresponding to the micro tact switches of different models are different, and different terminal material belts need to use different dies, after one terminal material belt is processed, if another terminal material belt needs to be processed, the dies need to be detached from a punch press and replaced by another die.

Disclosure of Invention

The invention aims to provide a blanking die with a replaceable die core, which has the advantages that: the mold cost of manufacturers can be greatly reduced.

The above object of the present invention is achieved by the following technical solutions: a blanking die capable of conveniently replacing a die core comprises an upper die and a lower die, wherein the upper die comprises an upper die plate, an upper fixed plate group fixedly connected to the lower side of the upper die plate, a stripper plate group arranged below the upper fixed plate group, a stripper spring for pushing the upper fixed plate group and the stripper plate group to be away from each other and a stripper bolt vertically arranged, the stripper plate group is hung on the upper die plate through the stripper bolt, and the stripper plate group can move relative to the upper die plate along the axial direction of the stripper bolt at a certain distance; a stripping core block is embedded at the lower side of the stripping plate group and is detachably connected with the stripping plate group; a punch fixing block is embedded in the lower side of the upper fixing plate group and detachably connected with the upper fixing plate group, a punch is fixed on the punch fixing block and penetrates through the stripper plate group and the stripper core block;

the lower die comprises a lower die plate, a lower backing plate and a knife edge fixing plate which are fixedly connected in sequence from bottom to top, a concave module is embedded in the middle of the knife edge fixing plate, a first blanking hole matched with a punch is formed in the concave module, a second blanking hole communicated with the first blanking hole is formed in the lower backing plate, and a cavity is formed in the position, corresponding to the concave module, in the middle of the lower die plate.

Through the technical scheme, a manufacturer only needs to match the corresponding stripping core block, the punch fixing block, the punch, the lower cushion plate and the female die block for products of different models, and does not need to produce too many upper templates, upper fixing plate groups, lower templates and knife edge fixing plates, so that the mold cost of the manufacturer can be greatly reduced, and when the manufacturer newly adds products, only new stripping core blocks, punch fixing blocks, punches, lower cushion plates and female die blocks need to be designed and produced. After a terminal material belt is processed, if another terminal material belt is needed to be processed, a user only needs to replace the stripping core block, the punch fixing block, the punch, the lower cushion plate and the female die block. The mould is when using, the five metals material area is passed between by taking off the pellet and the die piece, the cope match-plate pattern downstream under the drive of punch press, make take off pellet and die piece press from both sides the five metals material area earlier tightly, then the punching pin continues downstream and carries out the blanking to the five metals material area with the blade cooperation on the first blanking mouth, then the cope match-plate pattern rebound under the drive of punch press, make the punching pin rebound earlier and take the separation with the five metals under the effect of taking off the pellet, then take off the pellet rebound again and loosen the five metals material area, accomplish a blanking to the five metals material area.

The invention is further configured to: the concave module is provided with a stepped hole which penetrates through the upper side and the lower side of the concave module, and the aperture of the stepped hole is gradually increased from top to bottom; a floating pin, a floating spring and a plug are sequentially arranged in the stepped hole from top to bottom, the floating pin is in sliding fit with the stepped hole, the upper end of the floating pin extends out of the stepped hole, and the plug is in threaded fit with the stepped hole; one end of the floating spring is abutted against the floating pin, and the other end of the floating spring is abutted against the plug.

By the technical scheme, when the hardware material belt is clamped by the stripping core block and the concave module, the floating pin can be pressed into the stepped hole; when taking off the material pellet and loosening the five metals material area, the buoyancy pin can be under the effect of buoyancy spring reextension shoulder hole and with five metals material area jack-up to make the five metals material area separate with the blade in first blanking hole, so that the punch press continues to remove the five metals material area.

The invention is further configured to: the flotation pin is including being located anticreep portion and the floating portion that integrated into one piece just stretched out by the shoulder hole upper end in the shoulder hole middle part, the diameter of anticreep portion is greater than the diameter of floating portion.

Through above-mentioned technical scheme, the portion of floating is used for jacking the five metals material area, and the setting of anticreep portion can avoid the flotation material round pin to deviate from the shoulder hole.

The invention is further configured to: the upper fixing plate group comprises an upper base plate fixed on the lower side of the upper template and a punch fixing plate fixed on the lower side of the upper base plate, a first installation cavity is formed in the middle of the punch fixing plate, and the punch fixing block is embedded in the first installation cavity and connected with the upper base plate through bolts.

Through above-mentioned technical scheme, the upper padding plate is used for cooperating the bolt to fix the punching pin fixed block, and the punching pin fixed plate is used for strengthening the punching pin fixed block, avoids the punching pin fixed block to take place the skew in the course of the work.

The invention is further configured to: the material removing plate group comprises a material removing base plate and a material removing fixing plate fixed on the lower side of the material removing base plate, a second mounting cavity is formed in the middle of the material removing fixing plate, and the material removing core block is embedded in the second mounting cavity and connected with the material removing base plate through bolts.

Through the technical scheme, the material removing base plate is used for being matched with the bolt to fix the material removing core block, and the material removing fixing plate is used for processing the material removing core block, so that the material removing core block is prevented from deviating in the working process.

The invention is further configured to: a first rib arranged along the vertical direction is integrally formed on the side wall of the second mounting cavity, a first groove matched with the first rib is formed on the side wall of the stripping core block,

through above-mentioned technical scheme, can avoid the user will take off material core piece dress when will taking off material core piece dress to the second installation cavity and turn over through the setting of first bead and first recess.

The invention is further configured to: the upper side of the concave module is in bolted connection with two parallel positioning strips, the length direction of the positioning strips is parallel to the conveying direction of the material belt, and the lower edge of one opposite side of the two positioning strips is provided with a slot into which the edge of the material supply belt is inserted;

and an avoiding groove for the positioning strip to enter is formed in the position of the stripping core block corresponding to the positioning strip.

Through the technical scheme, when the punching die is used, the two sides of the hardware material belt are respectively inserted into the two slots, so that the positioning strip positions and limits the hardware material belt, the situation that the hardware material belt deviates in the punching process is avoided, and the punching die can accurately punch the correct position on the hardware material belt.

The invention is further configured to: positioning pieces are arranged at two ends of the upper side of the knife edge fixing plate in the material belt conveying direction; the positioning piece comprises a movable block movably embedded on the knife edge fixing plate and two positioning blocks fixed on the upper side of the movable block at intervals, the movable block is connected with the lower backing plate through a bolt, the bolt for connecting the movable block and the lower backing plate is not positioned between the two adjacent positioning blocks, and the lower edge of one opposite side of the two positioning blocks is provided with a positioning groove into which the edge of the feeding belt is inserted;

and the lower side of the stripper plate group is provided with a avoiding hole for the positioning piece to enter.

Through above-mentioned technical scheme, when using, the five metals material area is passed by the constant head tank for the locating piece is fixed a position and is spacing to the five metals material area, avoids taking place the condition appearance of skew in the blanking course of working five metals material area, thereby makes the correct position on the five metals material area that dashes that the punching pin can be accurate.

The invention is further configured to: a third mounting cavity is formed in the middle of the knife edge fixing plate, and the concave module is movably embedded in the third mounting cavity and is connected with the lower backing plate through bolts; the side wall of the third mounting cavity is integrally formed with a second convex edge arranged in the vertical direction, and a second groove is formed in the position, corresponding to the second convex edge, of the concave module.

Through above-mentioned technical scheme, can avoid the user to adorn the die piece when installing the die piece in the third installation cavity anti-with the setting of second bead and second recess.

The invention is further configured to: the upper template is provided with a first connecting hole penetrating through the fixing plate, the position, corresponding to the first connecting hole, of the upper fixing plate group is provided with a second connecting hole penetrating through the upper fixing plate group, and the position, corresponding to the first connecting hole, of the stripper plate group is provided with a third connecting hole; the material removing bolt sequentially penetrates through the first connecting hole, the second connecting hole and the third connecting hole from top to bottom, the material removing bolt is in threaded fit with the third connecting hole, the material removing bolt is in sliding fit with the first connecting hole and the second connecting hole, and the head of the material removing bolt is abutted to the upper side of the upper fixing plate group.

Through the technical scheme, when the die punches the hardware material belt, the punch drives the upper die plate to move downwards, so that the stripping core block and the concave module clamp the hardware material belt firstly; then the punch can still drive the upper template to move downwards for a certain distance (at the moment, the stripping bolt and the upper template move relatively), so that the punch can continue to move downwards and is matched with the cutting edge on the first blanking port to blank the hardware material belt; then, when the upper template moves upwards under the action of the punch press, the upper template moves upwards for a certain distance (at the moment, the stripping bolt and the upper template move relatively), the stripping core block still cooperates with the concave module to clamp the hardware material belt under the action of the stripping spring, and the punch moves upwards along with the upper template and is separated from the hardware material belt; then the head of the stripping bolt abuts against the upper side of the upper fixing plate group; then, the upper template further moves upwards, the material removing core block and the material removing plate group also move upwards under the driving of the material removing bolt, so that the material removing core block is separated from the hardware material belt. Because the blade of the first blanking mouth of die-cutting sword cooperation is gone on the blanking back to the five metals material area, the cooperation between die-cutting sword and the five metals material area is relatively tighter, if directly extract the die-cutting sword from the five metals material area, causes the five metals material area to warp very easily, and takes off the material core piece cooperation female module and will punch and five metals material under the tight circumstances of clamp with the five metals material area and separate, can avoid the die-cutting sword to make the circumstances of warping appear with the five metals material area.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the mold cost of a manufacturer is greatly reduced;

2. due to the arrangement of the floating pin, the floating spring and the plug, after the die completes one-time blanking of the hardware material belt, the hardware material belt can be automatically separated from the cutting edge of the first blanking hole, so that a punching machine can continuously move the hardware material belt conveniently;

3. the punch is separated from the hardware material belt under the condition that the hardware material belt is clamped by the stripping core block matched concave module, so that the condition that the hardware material belt is deformed by the punch can be avoided.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a schematic view showing the connection relationship between the material-removing core block and the material-removing fixing plate;

FIG. 5 is a cross-sectional view taken along line C-C of FIG. 1;

FIG. 6 is a schematic view showing the connection between the knife-edge fixing plate and the die block;

fig. 7 is a sectional view taken in the direction D-D of fig. 1.

In the figure, 1, an upper die; 11. mounting a template; 121. an upper base plate; 122. a punch fixing plate; 123. a first mounting cavity; 131. removing the material base plate; 132. a material removing fixing plate; 133. a second mounting cavity; 134. a first rib; 135. avoiding holes; 14. a material removing spring; 15. removing the material bolt; 151. a first connection hole; 152. a second connection hole; 153. a third connection hole; 16. removing the material core block; 161. a first groove; 162. an avoidance groove; 17. a punch fixing block; 18. punching; 2. a lower die; 21. a lower template; 211. a cavity; 22. a lower base plate; 221. a second blanking hole; 23. a knife edge fixing plate; 231. a third mounting cavity; 232. a second rib; 24. a female module; 241. a first blanking hole; 242. a positioning bar; 243. a slot; 244. a second groove; 25. a stepped hole; 26. a float pin; 27. a float spring; 28. a plug; 29. a positioning member; 291. a movable block; 292. positioning blocks; 293. and (6) positioning a groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.

Example (b):

referring to fig. 1, the blanking die capable of conveniently replacing a die core disclosed by the invention comprises an upper die 1 and a lower die 2.

Referring to fig. 1 and 2, the upper die 1 includes an upper die plate 11, an upper pad 121, a punch fixing plate 122, a stripping pad 131, and a stripping fixing plate 132, which are sequentially disposed from top to bottom; the upper backing plate 121 and the punch fixing plate 122 are connected by bolts to form an upper fixing plate group, the stripping backing plate 131 and the stripping fixing plate 132 are connected by bolts to form a stripping plate group, and the stripping plate group is connected with the upper template 11 by a plurality of stripping bolts 15 in combination with fig. 3. Specifically, the upper plate 11 is provided with a plurality of first connection holes 151 penetrating through the upper and lower sides of the upper plate 11; a second connection hole 152 penetrating through the upper fixed plate group is formed in the position, corresponding to the first connection hole 151, of the upper fixed plate group; a third connecting hole 153 is formed in the stripper plate group at a position corresponding to the first connecting hole 151; the material removing bolt 15 is inserted into the first connecting hole 151, the second connecting hole 152 and the third connecting hole 153, and the material removing bolt 15 is in sliding fit with the first connecting hole 151 and the second connecting hole 152 and in threaded fit with the third connecting hole 153. In addition, a stripping spring 14 is fixed between the punch fixing plate 122 and the stripping backing plate 131; specifically, as shown in fig. 2, in this embodiment, the fixing plate 122 and the stripping pad 131 are respectively provided with spring grooves disposed oppositely, two ends of the stripping spring 14 are respectively disposed in the spring grooves, and the depth of the two spring grooves is smaller than the length of the spring in the non-stressed state of the spring.

Referring to fig. 2 and 4, a second mounting cavity 133 is formed in the middle of the material-removing fixing plate 132, a material-removing core block 16 matched with the second mounting cavity 133 is movably embedded in the second mounting cavity 133, and the material-removing core block 16 is connected with the material-removing base plate 131 through a bolt; in order to prevent a user from reversely loading the core removing block 16 when loading the core removing block 16 into the second mounting cavity 133, a first rib 134 is integrally formed on the sidewall of the second mounting cavity 133 and is vertically arranged, and a first groove 161 matched with the first rib 134 is formed on the sidewall of the core removing block 16.

Referring to fig. 5, a first mounting cavity 123 penetrating through the upper side and the lower side of the punch fixing plate 122 is formed in the center of the punch fixing plate 122, a punch fixing block 17 is movably embedded in the first mounting cavity 123, the punch fixing block 17 is connected with an upper backing plate 121 through bolts (here, fig. 2 is combined), a punch 18 is fixedly connected to the lower side of the punch fixing block 17, the punch 18 penetrates through the stripper backing plate 131 and the stripper core block 16, and the punch 18 is in sliding fit with the stripper backing plate 131 and the stripper core block 16.

Referring to fig. 2, the lower die 2 includes a lower die plate 21, a lower backing plate 22 and a knife edge fixing plate 23 which are sequentially arranged from bottom to top and connected together through bolts, a third mounting cavity 231 is formed in the middle of the knife edge fixing plate 23, a concave die block 24 is arranged in the mounting cavity, and the concave die block 24 is connected with the lower backing plate 22 through bolts.

Referring to fig. 5, a first blanking hole 241 is formed in the die block 24 at a position corresponding to the punch 18, a second blanking hole 221 communicated with the first blanking hole 241 is formed in the lower backing plate 22, and a cavity 211 is formed in the middle of the lower die plate 21 at a position corresponding to the die block 24.

Referring to fig. 6, in order to prevent a user from reversely assembling the female die block 24 when the female die block 24 is assembled into the third assembling cavity 231, a second rib 232 is integrally formed on a sidewall of the third assembling cavity 231 in a vertical direction, and a second groove 244 engaged with the second rib 232 is formed on the sidewall of the female die block 24.

Referring to fig. 3, stepped holes 25 penetrating through upper and lower sides of the concave module 24 are formed in the concave module 24, and the diameters of the stepped holes 25 are gradually increased from top to bottom; the stepped hole 25 is provided with a float pin 26, a float spring 27 and a plug 28 in this order from top to bottom. The float pin 26 includes a retaining portion 262 located in the middle of the stepped hole 25 and a floating portion 261 integrally formed at the upper end of the retaining portion 262 and extending from the upper end of the stepped hole 25, and it should be noted that the diameter of the retaining portion 262 is larger than that of the floating portion 261. The plug 28 is in threaded fit with the stepped hole 25, and a hexagonal blind hole is formed in the lower side of the plug 28.

Referring to fig. 2 and 6, two parallel positioning strips 242 are bolted on the upper side of the die block 24, the length direction of the positioning strips 242 is parallel to the conveying direction of the material belt, and the lower edge of the opposite side of the two positioning strips 242 is provided with a slot 243 into which the edge of the material supply belt is inserted; an avoiding groove 162 for the positioning strip 242 and the corresponding bolt to enter is arranged at the position of the stripping core block 16 corresponding to the positioning strip 242.

Referring to fig. 6 and 7, positioning members 29 are disposed at both ends of the upper side of the knife edge fixing plate 23 in the material belt conveying direction; the positioning element 29 includes a movable block 291 movably embedded on the knife edge fixing plate 23 and two positioning blocks 292 fixed on the upper side of the movable block 291 at intervals, the movable block 291 is connected with the lower pad 22 by bolts, the bolts connecting the movable block 291 with the lower pad 22 are not located between two adjacent positioning blocks 292, and the lower edge of the opposite side of the two positioning blocks 292 is provided with a positioning groove 293 into which the edge of the feeding belt is inserted. An avoiding hole 135 for the positioning block 293 to enter is formed at the lower side of the stripper plate group.

The manufacturer only needs to match the corresponding stripping core block 16, punch fixing block 17, punch 18, lower backing plate 22 and concave module 24 for different models of products. When a manufacturer adds a new product, only the new stripping core block 16, the punch fixing block 17, the punch 18, the lower cushion plate 22 and the concave module 24 need to be designed and produced. After one terminal material belt is processed, if another terminal material belt is needed to be processed, a user only needs to replace the stripper core block 16, the punch fixing block 17, the punch 18, the lower cushion plate 22 and the concave module 24.

In use, the strap is mounted on a punch machine with the strap passing between locating member 29 and the opposing locating strip 242. When the die punches the metal material belt, the punch drives the upper template 11 to move downwards, so that the material stripping core block 16 and the concave module 24 clamp the metal material belt, and at the moment, the floating pin 26 is pressed into the stepped hole 25; then the punch press can still drive the upper template 11 to move downwards for a certain distance (at this time, the stripping bolt 15 and the upper template 11 move relatively), so that the punch 18 can continue to move downwards and is matched with the cutting edge on the first blanking port to blank the hardware material belt; then, when the upper die plate 11 moves upwards under the action of the punch press, the upper die plate 11 moves upwards for a certain distance (at this time, the stripper bolt 15 and the upper die plate 11 move relatively), the stripper core block 16 still cooperates with the concave module 24 to clamp the metal material belt under the action of the stripper spring 14, and the punch 18 moves upwards along with the upper die plate 11 and is separated from the metal material belt; then the head of the stripping bolt 15 is abutted to the upper side of the upper fixing plate group; then, with the further upward movement of the upper template 11, the material removing core block 16 and the material removing plate group are also moved upward under the driving of the material removing bolt 15, so that the material removing core block 16 is separated from the metal material belt; thereafter, the floating pin 26 will be extended out of the stepped hole 25 again under the action of the floating spring 27 and jack up the hardware material belt, so as to separate the hardware material belt from the cutting edge of the first blanking hole 241, so that the punching machine can move the hardware material belt continuously.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a blanking mould that can conveniently change mold core, includes mould (1) and lower mould (2), characterized by: the upper die (1) comprises an upper die plate (11), an upper fixed plate group fixedly connected to the lower side of the upper die plate (11), a stripping plate group arranged below the upper fixed plate group, a stripping spring (14) for pushing the upper fixed plate group and the stripping plate group to be away from each other, and stripping bolts (15) vertically arranged, wherein the stripping plate group is hung on the upper die plate (11) through the stripping bolts (15), and the stripping plate group can axially move for a certain distance along the stripping bolts (15) relative to the upper die plate (11); a stripping core block (16) is embedded at the lower side of the stripping plate group, and the stripping core block (16) is detachably connected with the stripping plate group; a punch fixing block (17) is embedded at the lower side of the upper fixing plate group, the punch fixing block (17) is detachably connected with the upper fixing plate group, a punch (18) is fixed on the punch fixing block (17), and the punch (18) penetrates through the stripper plate group and the stripper core block (16);

lower mould (2) include by lower bolster (21), lower bolster (22) and edge of a knife fixed plate (23) of supreme rigid coupling in proper order down, edge of a knife fixed plate (23) middle part inlays and is equipped with concave module (24), be equipped with on concave module (24) with first blanking hole (241) of punch (18) complex, set up second blanking hole (221) with first blanking hole (241) intercommunication on lower bolster (22), cavity (211) have been opened to the position that corresponds concave module (24) in lower bolster (21) middle part.

2. The blanking die capable of conveniently replacing the die core as claimed in claim 1, wherein: the concave module (24) is provided with a stepped hole (25) which penetrates through the upper side and the lower side of the concave module (24), and the diameter of the stepped hole (25) is gradually increased from top to bottom; a floating pin (26), a floating spring (27) and a plug (28) are sequentially arranged in the stepped hole (25) from top to bottom, the floating pin (26) is in sliding fit with the stepped hole (25), the upper end of the floating pin extends out of the stepped hole (25), and the plug (28) is in threaded fit with the stepped hole (25); one end of the floating spring (27) is abutted with the floating pin (26), and the other end of the floating spring is abutted with the plug (28).

3. The blanking die capable of conveniently replacing the die core as claimed in claim 2, wherein: buoyancy pin (26) are including being located anticreep portion (262) and the integrated into one piece in anticreep portion (262) upper end and by unsteady portion (261) that shoulder hole (25) upper end stretched out in shoulder hole (25) middle part, the diameter of anticreep portion (262) is greater than the diameter of unsteady portion (261).

4. The blanking die capable of conveniently replacing the die core as claimed in claim 1, wherein: the upper fixing plate group comprises an upper base plate (121) fixed on the lower side of the upper template (11) and a punch fixing plate (122) fixed on the lower side of the upper base plate (121), a first installation cavity (123) is formed in the middle of the punch fixing plate (122), and the punch fixing block (17) is embedded in the first installation cavity (123) and connected with the upper base plate (121) through bolts.

5. The blanking die capable of conveniently replacing the die core as claimed in claim 1, wherein: the material removing plate group comprises a material removing base plate (131) and a material removing fixing plate (132) fixed on the lower side of the material removing base plate (131), a second mounting cavity (133) is formed in the middle of the material removing fixing plate (132), and the material removing core block (16) is embedded in the second mounting cavity (133) and connected with the material removing base plate (131) through bolts.

6. The blanking die capable of conveniently replacing the die core as claimed in claim 5, wherein: the side wall of the second mounting cavity (133) is integrally formed with a first rib (134) arranged along the vertical direction, and the side wall of the material-removing core block (16) is provided with a first groove (161) matched with the first rib (134).

7. The blanking die capable of conveniently replacing the die core as claimed in claim 1, wherein: two positioning strips (242) which are parallel to each other are connected to the upper side of the female module (24) through bolts, the length direction of each positioning strip (242) is parallel to the conveying direction of the material belt, and the lower edge of the opposite side of each positioning strip (242) is provided with a slot (243) into which the edge of the material supply belt is inserted;

and an avoiding groove (162) for the positioning strip (242) to enter is formed in the position of the stripping core block (16) corresponding to the positioning strip (242).

8. The blanking die capable of conveniently replacing the die core as claimed in claim 7, wherein: positioning pieces (29) are arranged at two ends of the upper side of the knife edge fixing plate (23) in the material belt conveying direction; the positioning piece (29) comprises a movable block (291) movably embedded on the knife edge fixing plate (23) and two positioning blocks (292) fixed on the upper side of the movable block (291) at intervals, the movable block (291) is in bolt connection with the lower backing plate (22), a bolt for connecting the movable block (291) with the lower backing plate (22) is not located between two adjacent positioning blocks (292), and a positioning groove (293) into which a feeding belt edge is inserted is formed in the lower edge of one opposite side of the two positioning blocks (292);

and a dodging hole (135) for a positioning part (29) to enter is formed in the lower side of the stripping plate group.

9. The blanking die capable of conveniently replacing the die core as claimed in claim 1, wherein: a third mounting cavity (231) is formed in the middle of the knife edge fixing plate (23), and the concave module (24) is movably embedded in the third mounting cavity (231) and is in bolt connection with the lower backing plate (22); a second rib (232) arranged along the vertical direction is integrally formed on the side wall of the third mounting cavity (231), and a second groove (244) is formed in the position, corresponding to the second rib (232), of the concave module (24).

10. The blanking die capable of conveniently replacing the die core as claimed in claim 1, wherein: the upper template (11) is provided with first connecting holes (151) penetrating through the fixing plate, the positions, corresponding to the first connecting holes (151), of the upper fixing plate group are provided with second connecting holes (152) penetrating through the upper fixing plate group, and the positions, corresponding to the first connecting holes (151), of the material stripping plate group are provided with third connecting holes (153); take off material bolt (15) and pass first connecting hole (151), second connecting hole (152) and third connecting hole (153) from top to bottom in proper order, take off material bolt (15) with third connecting hole (153) screw-thread fit, take off material bolt (15) with first connecting hole (151) and second connecting hole (152) sliding fit, just take off the head butt of material bolt (15) in upper fixed plate group upside.