Drawing and cutting die capable of reducing abrasion

Abstract

The utility model relates to a broaching and cutting die capable of reducing abrasion, which comprises a lower die provided with a lower die knife edge, and the lower die knife edge is provided with a material placing hole which is formed by sinking inwards from the surface of the lower die knife edge; the upper die can move towards the lower die, the upper die comprises an insertion punch moving along with the upper die, a groove formed by inwards sinking from the surface of the insertion punch, a sliding block arranged on the outer side of the insertion punch and a punch fixedly connected with the sliding block, the sliding block is provided with a through groove penetrating through the upper surface and the lower surface of the sliding block, and a rolling shaft is installed in the through groove; the insertion punch extends into the through groove, and the rolling shaft abuts against the groove. The inserting punch moves towards the lower die to extrude the rolling shaft, the rolling shaft rotates and transmits the extrusion force to the sliding block, the punch moves along with the rolling shaft and enters a product, the inserting punch continuously moves towards the lower die, the rolling shaft falls into the groove and pulls the sliding block to move reversely, and the tail end of the punch is matched with a knife edge of the lower die to cut the product, so that the friction between the inserting punch and the sliding block is reduced; and the service life is prolonged.

Description

Technical Field

[0001] It relates to the technical field of stretch-cutting forming, and particularly to a stretch-cutting die for reducing wear. Background Art

[0002] As is well known, after the product is stretched, due to the flow of the material, redundant and irregular materials will be formed at the mouth part and need to be removed.

[0003] According to Chinese Patent CN214235875U, a through-type rotary cutting and stretching part continuous die is disclosed. The die includes a base, an upper die base is arranged above the base, a punch assembly is arranged inside the upper die base, a punch is arranged on the punch assembly, and a rotary cutting edge mechanism is arranged at the position corresponding to the punch on the upper end surface of the base. The inclined block is driven by an electric push rod, and the inclined block cooperates with the left inclined groove and the right inclined groove of the lifting seat to drive the lifting seat to adjust the lifting height, cut the product, and then through the reset spring arrangement, assist the lifting seat to rebound and reset. However, during long-term use, the inclined block often frictions and collides with the left inclined groove and the right inclined groove, and its precision will decline. After long-term use, the reset spring becomes flabby in elasticity and has a poor recovery effect.

[0004] Therefore, it is necessary to develop a stretch-cutting die for reducing wear to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a stretch-cutting die for reducing wear and improving service life.

[0006] To achieve the above purpose, the present utility model provides the following technical solution: A stretch-cutting die for reducing wear, which includes:

[0007] A lower die, on which a lower die cutting edge is installed, and the lower die cutting edge has a material placing hole formed by being recessed inward from its surface, and the material placing hole is used for placing the product;

[0008] An upper die, which can move towards the lower die. The upper die includes an insert punch that moves therewith, a groove formed by being recessed inward from the surface of the insert punch, a slider arranged outside the insert punch, and a punch fixedly connected to the slider. The slider has a through groove penetrating its upper and lower surfaces, a roller is installed in the through groove, the insert punch extends into the through groove, and the roller abuts against the groove.

[0009] Further, the upper die includes a slider seat, and a cavity is formed inside the slider seat, and the slider is installed in the cavity.

[0010] Further, the upper die includes an inner part, and the bottom of the inner part extends vertically downward to one side of the slider seat and is arranged at a distance from the slider seat.

[0011] Further, the slider has an empty groove formed by inward depression from the inner wall surface of the through groove. One side of the roller is located in the empty groove, and the other side is located in the through groove.

[0012] Further, the side surface of the slider close to the inside is recessed inward from the surface to form a mounting groove. The punch is mounted in the mounting groove. One end of the punch is clamped with the slider, and the other end extends between the slider seat and the inside.

[0013] Further, the punch extends downward along the gap between the slider seat and the inside, and its end extends out of the lower surface of the slider seat.

[0014] Further, the punch is recessed inward from the outside, and its depth changes according to the diameter of the product, so that the end of the punch can extend into the product.

[0015] Further, the bottom of the insert punch is recessed inward from the surface to form the groove, and the groove is located on both the inside and outside of the insert punch.

[0016] Further, the bottom of the inside is recessed inward from the outer surface to form a clearance groove for the punch to move, so as to prevent the inside from colliding with the punch.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model is a cutting die for reducing wear, which has the characteristic of improving the service life. Through the product entering the material placing hole, the upper die and the lower die are closed, the insert punch moves downward, extruding the roller. The roller rotates and transmits the extrusion force to the slider, and the punch moves accordingly and enters the product. The insert punch continues to move downward, the roller falls into the groove, pulling the slider to move in the reverse direction, and the end of the punch cooperates with the cutting edge of the lower die to cut the product, reducing the friction between the insert punch and the slider and improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings, where:

[0019] Figure 1 It is a schematic plane sectional structure diagram of a cutting die for reducing wear of the present utility model;

[0020] Figure 2 is Figure 1 A schematic plane sectional structure diagram of the lower die of the cutting die for reducing wear shown;

[0021] Figure 3 isFigure 1 The schematic diagram of the cross-sectional structure of the upper die plane of the drawing and cutting die for reducing wear is shown;

[0022] Figure 4 for Figure 3 The schematic diagram of the partial planar cross-sectional structure of the upper die of the drawing and cutting die for reducing wear is shown;

[0023] Figure 5 for Figure 1 A schematic diagram of the partial planar cross-sectional structure of a cutting die for reducing wear is shown.

[0024] In the figure: 1. lower die; 2. upper die; 11. lower die seat; 12. lower template; 13. discharge trough; 14. lower die blade; 15. material placement hole; 16. ejector rod; 17. ejector block; 21. upper die seat; 22. upper clamping plate; 23. fixing piece; 24. stop plate; 25. stripper plate; 26. receiving groove; 27. pulling and cutting part; 28. inner; 29. ​​roller; 210. punch; 270. through groove; 271. slider seat; 272. punch; 273. cavity; 274. slider; 275. empty groove; 276. installation groove; 277. groove; 281. avoidance groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Please see Figures 1 to 5 The utility model is a cutting die with reduced wear, which comprises a lower die 1 and an upper die 2 connected with the lower die 1.

[0027] Please see Figures 1 to 2 The lower die 1 includes a lower die base 11 and a lower template 12 fixedly mounted on the lower die base 11. The lower die base 11 carries the lower template 12 to keep it in a horizontal state. The lower template 12 is recessed inward from its upper surface to form a discharge groove 13. The shape of the discharge groove 13 changes according to the shape of the product so that the product can enter the discharge groove 13. A lower die blade 14 is provided in the discharge groove 13. The lower die blade 14 has a feeding hole 15 that runs through its upper and lower surfaces. The diameter of the feeding hole 15 is the same as the diameter of the discharge groove 13, and its axis is the same as the axis of the discharge groove 13. When the product enters the feeding hole 15, the outer wall of the product fits the inner wall of the feeding hole 15.

[0028] The lower die 1 further includes a knockout rod 16 and a knockout block 17. The knockout rod 16 vertically penetrates upward from the bottom of the lower die base 11 through the lower die base 11 and extends into the material placing groove 13. The knockout block 17 is installed in the material placing groove 13, and its shape is the same as that of the material placing groove 13. The lower surface of the knockout rod 16 abuts against the lower surface of the knockout block 17. The upper surface of the knockout block 17 can extend into the material placing hole 15 to eject the product located in the material placing hole 15 and control the height of the product and limit the position of the product when cutting the product.

[0029] Please refer to Figure 1 and Figure 3 , the upper die 2 includes an upper die base 21 and an upper clamping plate 22 fixedly installed on the upper die base 21. The upper die base 21 bears the upper clamping plate 22 to keep it in a horizontal state. A fixing member 23 is installed in the upper clamping plate 22. The fixing member 23 extends vertically downward from the upper clamping plate 22 and its end is connected with a stop plate 24 and a stripper plate 25. The stripper plate 25 is installed on the lower surface of the stop plate 24. A receiving groove 26 is formed by the stripper plate 25 recessing inward from its lower surface.

[0030] Please refer to Figure 1 and Figure 3 , Figure 4 , the upper die 2 further includes a cutting part 27 and an inner punch 28. Both the cutting part 27 and the inner punch 28 are installed in the receiving groove 26. Specifically, the inner punch 28 is located at the center position of the receiving groove 26, and the cutting part 27 is located outside the inner punch 28. A certain gap is maintained between the cutting part 27 and the inner punch 28. The cutting part 27 includes a slider base 271 fixed in the receiving groove 26 and an inserting punch 272 extending into the slider base 271. A cavity 273 is formed inside the slider base 271, and the cavity 273 extends towards the inner punch 28 and communicates with the gap maintained between the cutting part 27 and the inner punch 28.

[0031] A slider 274 is arranged in the cavity 273. The slider 274 has a through groove 270 penetrating its upper and lower surfaces and an empty groove 275 formed by recessing inward from the inner wall surface of the through groove 270. In this embodiment, the empty groove 275 is arc-shaped and is arranged oppositely. A roller 29 is installed in the empty groove 275. One side of the roller 29 is located in the empty groove 275, and the other side is located in the through groove 270.

[0032] The side surface of the slider 274 close to the inner punch 28 is recessed inward from the surface to form a mounting groove 276. The mounting groove 276 is a T-shaped groove. A punch 210 is installed in the mounting groove 276. One end of the punch 210 is clamped with the slider 274 through the mounting groove 276, and the other end extends between the slider base 271 and the inner punch 28 and extends towards the lower die 1 along the gap between the slider base 271 and the inner punch 28. Preferably, the end of the punch 210 extends out of the lower surface of the slider base 271 and is recessed inward from the outside, and its depth changes according to the diameter of the product, so that the end of the punch 210 can extend into the product.

[0033] Please refer toFigure 4 and Figure 5 , the top of the punching insert 272 is located within the upper clamping plate 22, and its height is fixed by the fixing member 23. The bottom of the punching insert 272 extends vertically downward into the through slot 270. A groove 277 is formed by the bottom of the punching insert 272 being recessed inward from the surface. The number of grooves 277 can be changed according to requirements. In this embodiment, the grooves 277 are located on both the inner and outer sides of the punching insert 272. The rollers 29 installed on the inner sides of a pair of sliders 274 are in contact with the surface of the punching insert 272. When the upper die 2 and the lower die 1 are closed, the punching insert 272 moves towards the lower die 1, squeezing the rollers 29. The rollers 29 rotate and transmit the squeezing force to the sliders 274, and the punch 210 then moves towards the inner sleeve 28 and enters the product. The punching insert 272 continues to move towards the lower die 1, and the rollers 29 fall into the grooves 277, pulling the sliders 274 away from the inner sleeve 28. The end of the punch 210 then cooperates with the lower die cutting edge 14 to cut the product.

[0034] The top of the inner sleeve 28 is fixedly connected to the stop plate 24, and its bottom extends vertically downward from the lower surface of the slider seat 271. The bottom diameter of the inner sleeve 28 is the same as the diameter of the product. When the upper die 2 and the lower die 1 are closed, the bottom of the inner sleeve 28 extends into the product and presses against the product.

[0035] Preferably, a clearance groove 281 is formed by the bottom of the inner sleeve 28 being recessed inward from the outer surface. The clearance groove 281 is used for the punch 210 to move, avoiding collision between the inner sleeve 28 and the punch 210.

[0036] When the novel wear-reducing drawing and cutting die of the present utility model is in use, the product enters the material placing hole 15, and the ejector block 17 extends into the material placing hole 15 to control the height of the product. The upper die 2 and the lower die 1 are closed. The bottom of the inner sleeve 28 extends into the product and presses against the product. The punching insert 272 moves towards the lower die 1, squeezing the rollers 29. The rollers 29 rotate and transmit the squeezing force to the sliders 274, and the punch 210 then moves towards the inner sleeve 28 and enters the product. The punching insert 272 continues to move towards the lower die 1, and the rollers 29 fall into the grooves 277, pulling the sliders 274 away from the inner sleeve 28. The end of the punch 210 then cooperates with the lower die cutting edge 14 to cut the product.

[0037] The present utility model relates to a wear-reducing drawing and cutting die, which has the characteristic of improving the service life. By the product entering the material placing hole, the upper die and the lower die being closed, the punching insert moving towards the lower die, squeezing the rollers, the rollers rotating and transmitting the squeezing force to the sliders, the punch moving accordingly and entering the product, the punching insert continuing to move towards the lower die, the rollers falling into the grooves, pulling the sliders to move in the reverse direction, and the end of the punch cooperating with the lower die cutting edge to cut the product, the friction between the punching insert and the sliders is reduced, and the service life is improved.

[0038] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A cutting die with reduced wear, characterized in that: It includes: A lower die (1) is provided with a lower die blade (14), wherein the lower die blade (14) has a material placement hole (15) formed by being recessed inward from its surface, and the material placement hole (15) is used for placing the product; The upper die (2) is movable toward the lower die (1), and the upper die (2) comprises a punch (272) that moves therewith, a groove (277) that is formed by inward depression from the surface of the punch (272), a slider (274) disposed outside the punch (272), and a punch (210) fixedly connected to the slider (274), wherein the slider (274) has a through groove (270) that passes through the upper and lower surfaces thereof, a roller (29) is installed in the through groove (270), the punch (272) extends into the through groove (270), and the roller (29) abuts against the groove (277).

2. The wear-reducing cutting die according to claim 1, characterized in that: The upper mold (2) comprises a slider seat (271), the slider seat (271) forms a cavity (273) inside, and the slider (274) is installed in the cavity (273).

3. The wear-reducing cutting die according to claim 2, characterized in that: The upper mold (2) comprises an inner (28), the bottom of the inner (28) vertically extending downward to one side of the slider seat (271) and spaced apart from the slider seat (271).

4. The wear-reducing cutting die according to claim 1, characterized in that: The slider (274) has a hollow groove (275) which is recessed inward from the inner wall surface of the through groove (270); one side of the roller (29) is located in the hollow groove (275) and the other side is located in the through groove (270).

5. The wear-reducing cutting die according to claim 3, characterized in that: The side surface of the slider (274) close to the anner (28) is recessed inward from the surface to form a mounting groove (276), and the punch (210) is installed in the mounting groove (276). One end of the punch (210) is clamped with the slider (274), and the other end extends between the slider seat (271) and the anner (28).

6. The wear-reducing cutting die according to claim 5, characterized in that: The punch (210) extends along the gap between the slider seat (271) and the inner (28) toward the lower die 1, and the end thereof protrudes out of the lower surface of the slider seat (271).

7. The wear-reducing drawing and cutting die according to claim 6, characterized in that: The punch (210) is recessed from the outside to the inside, and its depth varies according to the diameter of the product, so that the end of the punch (210) can extend into the product.

8. The wear-reducing cutting die according to claim 1, characterized in that: The bottom of the insert punch (272) is recessed inward from the surface to form the groove (277), and the groove (277) is located on both the inner and outer sides of the insert punch (272).

9. The wear-reducing cutting die according to claim 3, characterized in that: The bottom of the inner sleeve (28) is recessed inward from the outer surface to form a clearance groove (281), and the clearance groove (281) is used for the movement of the punch (210) to avoid collision between the inner sleeve (28) and the punch (210).

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