CN214517112U

CN214517112U - Sharp corner extruding mold

Info

Publication number: CN214517112U
Application number: CN202023166367.0U
Authority: CN
Inventors: 王聪
Original assignee: Dongguan Xinmeiyang Technology Co ltd
Current assignee: Dongguan Xinmeiyang Technology Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-10-29
Anticipated expiration: 2030-12-24

Abstract

The utility model relates to an extrusion closed angle mould, including lower mould assembly and upper mould assembly, upper mould assembly includes the upper die base, locate the upper die base face and take off the piece to the upper side of lower mould assembly, enclose the briquetting of establishing in upper side of taking off a piece week, connect the first equal-height sleeve and the first elastic component of elastic compression between upper die base and upper side of taking off the piece of upper die base and upper side, lower mould assembly includes the lower die base, locate the lower side of taking off the piece of lower side of lower die base face upward taking off the piece, enclose the shaping piece of establishing in lower side of taking off a piece week and the second elastic component of elastic compression between lower die base and lower side of taking off the piece, upper side takes off the piece and just sets up to taking off the piece down, upper side takes off the piece, lower side of taking off the piece and shaping piece forms the die cavity, one side of briquetting face lower mould assembly is equipped with the protruding muscle just to setting up the die cavity; this mould takes off the piece through last, takes off piece, shaping piece cooperation formation die cavity down, and the product is placed in the die cavity to take place deformation under the pressure effect of briquetting, thereby this mould extrudees the major diameter fillet of product and forms the closed angle, and operating mode is simple effective, and the practicality is strong.

Description

Sharp corner extruding mold

Technical Field

The utility model relates to the technical field of mold, especially, relate to an crowded closed angle mould.

Background

With the rapid development of industrial manufacturing, the application of stamping dies becomes more and more extensive, the natural fillet radius of a product stretching piece is generally larger than 2.0mm during stamping, and some customers require that the whole circumference of the product is smaller than 0.3 mm. Thus, the product processed by the stamping die needs to be further processed to meet the requirements of customers, and therefore, a new die needs to be provided to further process the product, so that the product forms a fillet or a sharp corner with a smaller radius.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides an crowded closed angle mould, it can be to product further processing for the product forms fillet or closed angle that the radius is littleer.

In order to achieve the above purpose, the utility model provides a scheme is:

a sharp corner extruding die comprises a lower die assembly and an upper die assembly which are matched with each other, wherein the upper die assembly comprises an upper die base, an upper stripping block arranged on one side of the upper die base facing the lower die assembly, a pressing block arranged on the peripheral side of the upper stripping block in a surrounding manner, a first equal-height sleeve for connecting the upper die base and the upper stripping block, and a first elastic piece elastically compressed between the upper die base and the upper stripping block, the lower die component comprises a lower die seat, a lower stripping block arranged on one side of the lower die seat facing the upper stripping block, a forming block arranged around the periphery of the lower stripping block, and a second elastic piece elastically compressed between the lower die seat and the lower stripping block, the upper stripping block is arranged opposite to the lower stripping block, the upper stripping block, the lower stripping block and the forming block form a cavity, one side of the pressing block facing the lower die assembly is provided with a convex rib, and the convex rib is opposite to the cavity.

As an improvement, the lower stripping block comprises a plane section, a first arc-shaped section and a second arc-shaped section, the first arc-shaped section is from the plane section toward the direction of the upper die base extends to the inner side wall of the forming block and is abutted against the forming block, and the second arc-shaped section is from the plane section toward the direction of the upper die base extends to the inner side wall of the forming block and is abutted against the forming block.

As an improvement, a second mounting hole is formed in the lower die holder in a recessed manner on the surface side facing the lower stripping block, one end of the second elastic element is mounted in the second mounting hole, and the other end of the second elastic element abuts against the lower stripping block.

As an improved mode, the lower die assembly further comprises a lower cushion plate and a plurality of second equal-height sleeves, the lower cushion plate is arranged between the forming block and the lower die base and connected with the lower die base and the lower stripping block, the lower die base is provided with a plurality of first through holes, the first through holes and the second equal-height sleeves are arranged in a one-to-one correspondence mode, the lower cushion plate is provided with a plurality of second through holes, the second through holes and the first through holes are arranged in a one-to-one correspondence mode, the inner diameter of each second through hole is smaller than that of each first through hole, one end of each second equal-height sleeve is movably installed in each first through hole, the other end of each second equal-height sleeve penetrates through the second through hole and then abuts against the lower stripping block, and the second equal-height sleeves are connected with the lower stripping block screws.

As an improvement mode, the lower die assembly further comprises a plurality of positioning pins and a plurality of first set screws, the positioning pins are mounted on the lower stripping block through the first set screws, the positioning protrusions protrude out of the side, facing the upper stripping block, of the lower stripping block, the upper stripping block is provided with a plurality of positioning holes matched with the positioning pins, and the positioning holes and the positioning pins are arranged in a one-to-one correspondence mode.

As a modification, the upper die seat surface is formed with a first mounting hole recessed toward the surface side of the upper stripping block, and one end of the first elastic member is mounted in the first mounting hole while the other end abuts against the upper stripping block.

As an improvement mode, go up the mould subassembly still including locating the upper die base with go up and take off the upper padding plate between the piece, the upper die base is equipped with a plurality of third through-hole, the third through-hole with first waiting for high sleeve one-to-one sets up, the upper padding plate is equipped with a plurality of fourth through-hole, the fourth through-hole with the third through-hole one-to-one sets up, the internal diameter of fourth through-hole is less than the internal diameter of third through-hole, first waiting for high telescopic one end movable mounting be in the third through-hole, first waiting for high telescopic other end passes behind the fourth through-hole with go up and take off the piece butt, just first waiting for high sleeve with go up and take off a piece screwed connection.

As an improvement mode, the upper die assembly further comprises an ejection pin, a third elastic piece and a second stop screw, the upper stripping block is provided with a fifth through hole and a sixth through hole communicated with the fifth through hole, the inner diameter of the fifth through hole is larger than that of the sixth through hole, one end of the ejection pin is movably installed in the fifth through hole, the other end of the ejection pin penetrates through the sixth through hole and extends out of the upper stripping block, the upper stripping block faces the surface side of the lower stripping block, the second stop screw is installed in the fifth through hole, and the third elastic piece is elastically compressed between the second stop screw and the ejection pin.

As an improvement mode, the sharp-corner extruding die further comprises a plurality of guide pillars arranged on the upper die assembly, the lower die assembly is provided with a plurality of guide holes, and the guide holes and the guide pillars are arranged in a one-to-one correspondence mode.

As an improvement, the upper die assembly further comprises an upper clamping plate arranged around the pressing block and a lower die plate arranged around the forming block, the guide post is mounted on the upper clamping plate, and the guide hole is formed in the lower die plate.

The utility model provides an crowded closed angle mould take off the piece on, take off the piece down, the cooperation of shaping piece forms the die cavity, the product is placed in the die cavity to take place deformation under the pressure effect of briquetting, crowded closed angle mould extrudees the major diameter fillet of product and forms minor diameter fillet or closed angle, the operation is simple effective, therefore, the clothes hanger is strong in practicability, and the crowded closed angle mould of this embodiment sets up the second elastic component through taking off under the die holder and between the flitch for ejecting product after accomplishing the processing operation, easy operation is reliable.

Drawings

FIG. 1 is a schematic view of a sharp corner extruding mold according to the present invention;

FIG. 2 is a top view of the corner extrusion mold shown in FIG. 1, when the corner extrusion mold is in an open state;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a cross-sectional view of the mold for extruding sharp corners of the present invention, at this time, the mold is in a mold closing state;

FIG. 6 is an enlarged view of C in FIG. 5;

FIG. 7 is a schematic view of the combination of the pressing block and the upper stripping block of the present invention;

FIG. 8 is a schematic structural view of a press block of the present invention;

FIG. 9 is a sectional view of the combination of the pressing block, the upper stripping block, the lower stripping block and the forming block of the present invention;

fig. 10 is a front view of the lower stripping block of the present invention;

fig. 11 is a schematic structural diagram of a product.

The meaning of the reference symbols in the drawings is:

1. extruding a sharp corner mold;

10. an upper die assembly; 11. an upper die holder; 111. a first mounting hole; 112. a third through hole; 12. removing the block; 121. positioning holes; 122. a fifth through hole; 123. a sixth through hole; 13. briquetting; 131. a rib is protruded; 14. a first equal height sleeve; 15. a first elastic member; 16. an upper base plate; 161. a fourth via hole; 17. a liftout pin; 18. a third elastic member; 19. a second set screw; 101. an upper splint;

20. a lower die assembly; 21. a lower die holder; 211. a second mounting hole; 212. a first through hole; 22. removing the block; 221. a planar section; 222. a first arcuate segment; 223. a second arcuate segment; 23. forming a block; 24. a second elastic member; 25. a lower template; 251. a guide hole; 26. a lower base plate; 261. a second through hole; 27. a second equal-height sleeve; 28. a positioning pin; 29. a first set screw;

30. a cavity;

40. a guide post;

2. producing a product; 200. a bottom wall; 201. opening a hole; 210. a peripheral wall.

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.

Referring to fig. 1 to 10, the present embodiment provides a mold 1 for extruding sharp corners for further processing a product 2, as shown in fig. 11, the product 2 generally includes a bottom wall 200 and a peripheral wall 210 surrounding the bottom wall 200, the peripheral wall 210 is disposed in a rounded rectangle, the rounded corner of the peripheral wall 210 is generally greater than 2.0mm, and the processing of the mold 1 for extruding sharp corners of the present embodiment can make the peripheral wall 210 of the product 2 form a rounded corner or a sharp corner with a smaller radius.

The extrusion angle corner die 1 comprises a lower die component 20 and an upper die component 10 which are matched, wherein the upper die component 10 comprises an upper die holder 11, an upper stripping block 12 arranged on one side of the upper die holder 11 facing the lower die component 20, a pressing block 13 arranged around the upper stripping block 12, a first equal-height sleeve 14 connecting the upper die holder 11 and the upper stripping block 12, and a first elastic piece 15 elastically compressed between the upper die holder 11 and the upper stripping block 12, the lower die component 20 comprises a lower die holder 21, a lower stripping block 22 arranged on one side of the lower die holder 21 facing the upper stripping block 12, a forming block 23 arranged around the lower stripping block 22, and a second elastic piece 24 elastically compressed between the lower die holder 21 and the lower stripping block 22, when the upper die component 10 and the lower die component 20 are in a die opening state, the first elastic piece 15 and the second elastic piece 24 are both in a natural extension state, and under the elastic support of the second elastic piece 24, the lower stripping block 22 and the forming block 23 are flush with the side facing the upper stripping block 12, or the lower stripping block 22 is slightly higher than the forming block 23 and the product 2 is placed on the lower stripping block 22. When last mould subassembly 10 and lower mould subassembly 20 are in the compound die state, it is just setting up to taking off the piece 22 down to take off the piece 12 on, take off the piece 12 down, take off the piece 22 and the shaping piece 23 forms the die cavity 30 down, product 2 is located die cavity 30, one side that briquetting 13 faces lower mould subassembly 20 is equipped with the protruding muscle 131 of round, protruding muscle 131 is just setting up to die cavity 30, that is to say, it supports to press on the diapire 200 of product 2 to take off the piece 12 on, protruding muscle 131 is then just to the perisporium 210 of product 2, concrete extrusion process is: the product 2 is placed on the lower stripping block 22, the bottom wall 200 of the product 2 is attached to the lower stripping block 22, the upper die assembly 10 is driven to move downwards integrally until the second elastic piece 24 is compressed, the upper stripping block 12 completely abuts against the bottom wall 200 of the product 2, at this time, the upper stripping block 12 does not move downwards any more, then the pressing block 13 continues to move downwards, the convex rib 131 abuts against the peripheral wall 210 of the product 2 and extrudes the product 2 downwards under the action of the driving force until the product 2 completely fills the cavity 30, at this time, the product 2 forms a fillet or a sharp corner with a smaller radius under the extrusion of the pressing block 13, then the upper die assembly 10 moves upwards to leave the product 2, the compressed second elastic piece 24 naturally extends, and the lower stripping block 22 moves upwards to eject the product 2.

The last piece 12 that takes off of crowded closed angle mould 1 of this embodiment, take off piece 22 down, shaping piece 23 cooperation forms die cavity 30, product 2 is placed in die cavity 30, and take place deformation under the pressure effect of briquetting 13, crowded closed angle mould 1 extrudees the major diameter fillet of product 2 and forms minor diameter fillet or closed angle, the operation is simple and effective, therefore, the clothes hanger is strong in practicability, and crowded closed angle mould 1 of this embodiment is through setting up second elastic component 24 between the lower die base 21 and the lower stripper plate, be used for ejecting product 2 after accomplishing the processing operation, and the operation is simple and reliable.

Alternatively, the first elastic member 15 and the second elastic member 24 are both coil springs.

Alternatively, the upper die base 11 is recessed to form a first mounting hole 111 facing the surface side of the upper stripping block 12, and one end of the first elastic member 15 is mounted in the first mounting hole 111 while the other end abuts against the upper stripping block 12. The lower die holder 21 is recessed to form a second mounting hole 211 facing the lower stripping block 22, one end of the second elastic element 24 is mounted in the second mounting hole 211, and the other end abuts against the lower stripping block 22. The first elastic element 15 and the second elastic element 24 are mounted in a simple and reliable manner.

Optionally, in order to adapt to the product 2, the forming block 23 has a rounded rectangular inner cavity, the lower stripping block 22 is located in the rounded rectangular inner cavity of the forming block 23 and abuts against the inner side wall of the forming block 23, and after the lower stripping block 22 is stressed to compress the second elastic member 24 and moves downwards, the forming block 23 forms a rounded rectangular cavity with the lower stripping block 22, and the rounded rectangular cavity is substantially adapted to the product 2.

Referring to fig. 1-10, in order to better adapt to the product 2, the lower stripping block 22 includes a plane section 221, a first arc-shaped section 222 and a second arc-shaped section 223, the first arc-shaped section 222 extends from the plane section 221 to the inner side wall of the forming block 23 in the direction of the upper die holder 11 and abuts against the forming block 23, the second arc-shaped section 223 extends from the plane section 221 to the inner side wall of the forming block 23 in the direction of the upper die holder 11 and abuts against the forming block 23, and the shape of the cavity 30 formed between the upper stripping block 12, the lower stripping block 22 and the forming block 23 is the shape of the processed product 2, so that a sharp corner or a small radius fillet is formed between the forming block 23 and the lower stripping block 22.

Similarly, the upper stripping block 12 is in a rounded rectangular shape as a whole in order to better adapt to the product 2.

Referring to fig. 1-6, the lower mold assembly 20 further includes a lower bolster 26 disposed between the forming block 23 and the lower mold base 21, and a plurality of second equal-height sleeves 27 connecting the lower mold base 21 and the lower stripping block 22, the lower mold base 21 is provided with a plurality of first through holes 212, the first through holes 212 and the second equal-height sleeves 27 are disposed in a one-to-one correspondence manner, the lower bolster 26 is provided with a plurality of second through holes 261, the second through holes 261 and the first through holes 212 are disposed in a one-to-one correspondence manner, the inner diameter of the second through holes 261 is smaller than the inner diameter of the first through holes 212, one end of the second equal-height sleeves 27 is movably mounted in the first through holes 212, the other end of the second equal-height sleeves 27 passes through the second through holes 261 and abuts against the lower stripping block 22, and the second equal-height sleeves 27 are in screw connection with the lower stripping block 22, the movement stroke of the lower stripper block 22 is limited by arranging the second equal-height sleeve 27, and meanwhile, the second equal-height sleeve 27 can play a role in guiding during the movement of the lower stripper plate.

It is understood that there may be one, two or more than three second equal-height sleeves 27, and in this embodiment, there are two second equal-height sleeves 27, and two first equal-height sleeves 14 are symmetrically arranged.

Referring to fig. 1-6 and 11, the lower mold assembly 20 further includes a plurality of positioning pins 28 and a plurality of first set screws 29, the positioning pins 28 are mounted on the lower releasing block 22 through the first set screws 29, and the positioning pins protrude out of the side of the lower releasing block 22 facing the upper releasing block 12, the upper releasing block 12 is provided with a plurality of positioning holes 121 adapted to the positioning pins 28, the positioning holes 121 and the positioning pins 28 are arranged in a one-to-one correspondence, the bottom wall 200 of the product 2 is provided with openings 201, the number of the positioning pins 28 corresponds to the number of the openings 201, when the product 2 is placed, the openings 201 of the product 2 are matched with the positioning pins 28, so as to position and mount the product 2, and facilitate the extruding process.

Referring to fig. 1-6, the upper mold assembly 10 further includes an upper cushion plate 16 disposed between the upper mold base 11 and the upper stripping block 12, the upper mold base 11 has a plurality of third through holes 112, the third through holes 112 are disposed corresponding to the first equal-height sleeves 14 one by one, the upper cushion plate 16 has a plurality of fourth through holes 161, the fourth through holes 161 are disposed corresponding to the third through holes 112 one by one, an inner diameter of the fourth through holes 161 is smaller than an inner diameter of the third through holes 112, one end of the first equal-height sleeves 14 is movably mounted in the third through holes 112, the other end of the first equal-height sleeves 14 passes through the fourth through holes 161 and abuts against the upper stripping block 12, and the first equal-height sleeves 14 are screwed to the upper stripping block 12, the upper stripping block 12 is connected with the upper die base 11 by arranging the first equal-height sleeve 14, the upper stripping block 12 is prevented from being separated from the upper die base 11, while the first equal height sleeve 14 can function as a guide during movement of the upper die assembly 10.

It is understood that one, two or more than three first equal-height sleeves 14 may be provided, and in the present embodiment, three first equal-height sleeves 14 are provided, and three first equal-height sleeves 14 are arranged in a row.

Referring to fig. 1 to 6, the upper mold assembly 10 further includes a material ejecting pin 17, a third elastic member 18 and a second set screw 19, the upper stripping block 12 is provided with a fifth through hole 122 and a sixth through hole 123 communicated with the fifth through hole 122, an inner diameter of the fifth through hole 122 is larger than an inner diameter of the sixth through hole 123, one end of the material ejecting pin 17 is movably installed in the fifth through hole 122, the other end of the material ejecting pin passes through the sixth through hole 123 and extends out of the side of the upper stripping block 12 facing the lower stripping block 22, the second set screw 19 is installed in the fifth through hole 122, the third elastic member 18 is elastically compressed between the second set screw 19 and the material ejecting pin 17, during mold closing, the third elastic member 18 is compressed, the material ejecting pin 17 retracts into the sixth through hole 123, after the extrusion operation is completed, the upper mold assembly 10 moves upward, the third elastic member 18 naturally extends to eject the material ejecting pin 17 out of the sixth through hole 123, the material ejecting pin 17 ejects the product 2 from the upper stripping block 12, is beneficial to improving the production efficiency.

It is understood that there may be one, two or more than three ejector pins 17, in this embodiment, there are two rows of ejector pins 17, each row is provided with four, and the number of the third elastic members 18 and the number of the second set screws 19 are the same as the number of the ejector pins 17.

Optionally, the third elastic member 18 is a coil spring.

Referring to fig. 1-6, the mold 1 for extruding sharp corners further includes a plurality of guide posts 40 disposed on the upper mold assembly 10, the lower mold assembly 20 has a plurality of guide holes 251, the guide holes 251 and the guide posts 40 are disposed in a one-to-one correspondence, and the guide posts 40 are disposed to guide the relative movement of the upper mold assembly 10 and the lower mold assembly 20, thereby preventing the upper mold assembly 10 from swinging downward to cause uneven stress on the product 2.

Specifically, go up mould assembly 10 still including enclosing and establishing the punch holder 101 of briquetting 13 week side and enclosing and establishing the lower bolster 25 at shaping piece 23 week side, upper die base 11, upper padding plate 16 and punch holder 101 pass through long screwed connection, lower bolster 25, lower bolster 26 and lower bolster 21 pass through long screwed connection, guide pillar 40 installs at punch holder 101, guiding hole 251 sets up at lower die plate 25, the crowded closed angle mould 1 of this embodiment rationally sets up the position of guide pillar 40 and guiding hole 251, neither influence the extrusion operation of crowded closed angle mould 1, can guide the relative motion of going up mould assembly 10 and lower mould assembly 20 again, it leads to product 2 atress uneven to avoid going up mould assembly 10 to take place the beat in the downward motion process.

It is understood that there may be one, two or more than three guide posts 40, in this embodiment, there are four guide posts 40 respectively disposed at four corners of the upper clamping plate 101, and similarly, there are four positioning holes 121 respectively disposed at four corners of the lower mold plate 25.

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 spirit of the present invention, several variations and modifications can be made, which are 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 sharp corner extruding die is characterized in that: comprises a lower die component and an upper die component which are matched with each other, wherein the upper die component comprises an upper die base, an upper stripping block arranged on one side of the upper die base facing the lower die component, a pressing block arranged around the upper stripping block, a first equal-height sleeve for connecting the upper die base with the upper stripping block and a first elastic piece elastically compressed between the upper die base and the upper stripping block, the lower die component comprises a lower die seat, a lower stripping block arranged on one side of the lower die seat facing the upper stripping block, a forming block arranged around the periphery of the lower stripping block, and a second elastic piece elastically compressed between the lower die seat and the lower stripping block, the upper stripping block is arranged opposite to the lower stripping block, the upper stripping block, the lower stripping block and the forming block form a cavity, one side of the pressing block facing the lower die assembly is provided with a convex rib, and the convex rib is opposite to the cavity.

2. The pointing die of claim 1, wherein said lower stripper block includes a planar segment, a first arcuate segment extending from said planar segment in a direction toward said upper die base and abutting said forming block, and a second arcuate segment extending from said planar segment in a direction toward said upper die base and abutting said forming block.

3. The corner extrusion die of claim 2, wherein a second mounting hole is formed in a concave surface of the lower die base facing the lower stripping block, one end of the second elastic element is mounted in the second mounting hole, and the other end of the second elastic element abuts against the lower stripping block.

4. The corner extrusion die of claim 1, wherein the lower die assembly further comprises a lower cushion plate arranged between the forming block and the lower die base and a plurality of second equal-height sleeves connected with the lower die base and the lower stripping block, the lower die base is provided with a plurality of first through holes, the first through holes and the second equal-height sleeves are arranged in a one-to-one correspondence manner, the lower cushion plate is provided with a plurality of second through holes, the second through holes and the first through holes are arranged in a one-to-one correspondence manner, the inner diameters of the second through holes are smaller than those of the first through holes, one end of each second equal-height sleeve is movably arranged in each first through hole, the other end of each second equal-height sleeve is abutted to the lower stripping block after penetrating through each second through hole, and the second equal-height sleeves are in screwed connection with the lower stripping block.

5. The pointing angle extrusion die of claim 1, wherein the lower die assembly further comprises a plurality of positioning pins and a plurality of first set screws, the positioning pins are mounted on the lower stripping block through the first set screws, the positioning pins protrude out of the surface side of the lower stripping block facing the upper stripping block, the upper stripping block is provided with a plurality of positioning holes matched with the positioning pins, and the positioning holes and the positioning pins are arranged in a one-to-one correspondence manner.

6. The pointing angle die of claim 1, wherein a surface of the upper die base facing the upper stripper block is recessed to form a first mounting hole, and one end of the first elastic member is mounted in the first mounting hole and the other end of the first elastic member abuts against the upper stripper block.

7. The sharp corner extruding die of claim 1, wherein the upper die assembly further comprises an upper base plate disposed between the upper die base and the upper stripping block, the upper die base is provided with a plurality of third through holes, the third through holes are disposed in one-to-one correspondence with the first equal-height sleeves, the upper base plate is provided with a plurality of fourth through holes, the fourth through holes are disposed in one-to-one correspondence with the third through holes, the inner diameter of each fourth through hole is smaller than that of the third through hole, one end of each first equal-height sleeve is movably mounted in the corresponding third through hole, the other end of each first equal-height sleeve passes through the corresponding fourth through hole and abuts against the upper stripping block, and the first equal-height sleeves are connected with the upper stripping block through screws.

8. The corner extrusion die of claim 1, wherein the upper die assembly further comprises a liftout pin, a third elastic member and a second stop screw, the upper stripping block is provided with a fifth through hole and a sixth through hole communicated with the fifth through hole, the inner diameter of the fifth through hole is larger than that of the sixth through hole, one end of the liftout pin is movably mounted in the fifth through hole, the other end of the liftout pin penetrates through the sixth through hole and extends out of the side, facing the lower stripping block, of the upper stripping block, the second stop screw is mounted in the fifth through hole, and the third elastic member is elastically compressed between the second stop screw and the liftout pin.

9. The apparatus of claim 1, wherein the apparatus further comprises a plurality of guide posts disposed on the upper die assembly, and the lower die assembly has a plurality of guide holes, the guide holes corresponding to the guide posts.

10. The pointing angle extrusion die of claim 9, wherein the upper die assembly further comprises an upper clamp plate disposed around the periphery of the pressing block and a lower die plate disposed around the periphery of the forming block, the guide posts are mounted on the upper clamp plate, and the guide holes are disposed in the lower die plate.