CN217775280U

CN217775280U - Trimming and curling integrated die

Info

Publication number: CN217775280U
Application number: CN202221937972.XU
Authority: CN
Inventors: 顾大明
Original assignee: Suzhou Mingfeng Precision Machinery Co ltd
Current assignee: Suzhou Mingfeng Precision Machinery Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-11-11
Anticipated expiration: 2032-07-26

Abstract

The utility model belongs to the technical field of metal punching press, a side cut turn-up integral type mould is related to, including last mould and lower mould, go up the mould and include by interior and outer setting lead positive piece, go up annular drift and go up take off the flitch, lead positive piece and go up take off the flitch and can float independently, the lower mould includes down annular drift and be located down the outer and floatable lower take off the flitch of annular drift, it has outer cylinder and the outer fillet face that is located outer cylinder below to go up the annular drift, lower annular drift has the inner cylinder face, is located the last fillet face of inner cylinder top and is located go up the interior knife face in the fillet face outside, the inner diameter of inner cylinder face is two-fold greater work piece thickness than the external diameter of outer cylinder face, goes up the flitch and includes the outer knife face with interior knife face complex. The utility model discloses an one set of mould has accomplished two steps of side cut and turn-up in one shot processing, makes production serialization for production efficiency has saved the manpower, and has guaranteed the product yield.

Description

Trimming and curling integrated die

Technical Field

The utility model relates to a metal stamping technical field, in particular to side cut turn-up integral type mould.

Background

Metal stamping is a common process for processing many metal products, and with diversification of customer requirements, the design of a die also needs to meet various product requirements.

The workpiece 1 in fig. 1 is a part of annular configuration with a central hole 11 and a bead 12, the inner part of the configuration having precision requirements, while the outer edge is rolled back into a U-shaped configuration, the edge being cut upwards. To accomplish this, edge rollover is required after the material is trimmed, but trimming can cause the product to fall from the strip of material, and rollover requires manual removal of the material and manual placement into another mold. On one hand, the production line is required to be provided with a manual control material discharge, and the processing continuity is poor; on the other hand, the risk of accidents is also increased.

Chinese patent CN205650689U discloses a turn-ups side cut mould, which includes a mould base, a turn-ups upper mould, a cutter and a fixing screw, wherein the mould base includes a base and a cylindrical limiting column, an annular first turn-ups section is arranged between the base and the cylindrical limiting column, a second turn-ups section matched with the first turn-ups section is arranged on the turn-ups upper mould, the cutter is fixedly connected to the outer side of the turn-ups upper mould through the fixing screw, and a groove for the cutter to stretch into is arranged on the base of the mould base. The die can cut off the excess materials after the flanging of the workpiece by the cutter while flanging, but the obtained section is still in the outward direction, the inner side of the section is pressed and is not deformed, and the flanging is generated on the inner side of the material, so that the die is not suitable for the occasions that the inner part of the product is not deformed and the outer side of the product is required to be rolled.

Therefore, it is necessary to develop a new mold to complete the trimming and hemming processes at one time.

Disclosure of Invention

The utility model discloses a main aim at provides a side cut turn-up integral type mould, can once only accomplish two steps of side cut and turn-up of material, make production serialization for production efficiency has saved the manpower, and has guaranteed the product yield.

The utility model discloses a following technical scheme realizes above-mentioned purpose: the upper die comprises a guide block, an upper annular punch and an upper stripper plate which are arranged from inside to outside, the guide block and the upper stripper plate can float independently, the lower die comprises a lower annular punch and a lower stripper plate which is positioned outside the lower annular punch and can float, the upper annular punch is provided with an outer cylindrical surface and an outer fillet surface positioned below the outer cylindrical surface, the lower annular punch is provided with an inner cylindrical surface, an upper fillet surface positioned above the inner cylindrical surface and an inner cutter surface positioned outside the upper fillet surface, the inner diameter of the inner cylindrical surface is larger than the outer diameter of the outer cylindrical surface by one time, and the upper stripper plate comprises an outer cutter surface matched with the inner cutter surface.

Specifically, the bottom of the pilot block is provided with a conical part with a large upper part and a small lower part.

Specifically, the middle part of the lower annular punch is provided with a through hole, and the lower die is provided with a blanking hole with the caliber not smaller than that of the through hole.

Furthermore, the aperture of the through hole is 1-2cm larger than the inner diameter of the inner cylindrical surface.

Furthermore, the lower die is also provided with an inclined slideway positioned below the blanking hole.

The utility model discloses technical scheme's beneficial effect is:

the utility model discloses an one set of mould has accomplished two steps of side cut and turn-up in one shot processing, makes production serialization for production efficiency has saved the manpower, and has guaranteed the product yield.

Drawings

FIG. 1 is a perspective view of a workpiece;

FIG. 2 is a perspective view of the edge-cutting and edge-curling integrated mold according to the embodiment when the mold is opened;

FIG. 3 is a sectional view of the trimming and hemming integrated mold according to the embodiment when the mold is closed;

FIG. 4 is an enlarged view of a portion of the portion A of FIG. 3;

FIG. 5 is a partial sectional view of the trimming and hemming integrated die of the embodiment when the die is opened.

The figures in the drawings represent:

1-workpiece, 10-material belt, 11-center hole, 12-crimping;

2-upper die, 21-guide block, 211-conical part, 22-upper annular punch, 221-outer cylindrical surface, 222-outer circular angular surface, 23-upper stripper plate and 231-outer cutter surface;

3-lower die, 31-lower annular punch, 311-inner cylindrical surface, 312-upper fillet surface, 313-inner cutter surface, 314-through hole, 32-lower stripper plate, 33-blanking hole and 34-inclined slideway.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

The embodiment is as follows:

as shown in fig. 1 to 5, the utility model discloses a trimming and curling integrated die, including last mould 2 and lower mould 3, it includes from interior to exterior that mould 2 sets up leads positive piece 21, go up annular drift 22 and go up stripper plate 23, lead positive piece 21 and go up stripper plate 23 and can float independently, lower mould 3 includes annular drift 31 down and is located the outer lower stripper plate 32 that just can float of annular drift 31 down, it has outer cylinder 221 and the outer fillet 222 that is located outer cylinder 221 below to go up annular drift 22, lower annular drift 31 has inner cylinder 311, be located the last fillet 312 of inner cylinder 311 top and be located the interior cutter face 313 in the last fillet 312 outside, the inside diameter of inner cylinder 311 is greater than the work piece 1 thickness of the external diameter of outer cylinder 221 by one time, it includes the outer cutter face 231 with interior cutter face 313 complex to go up stripper plate 23. When the mold is opened, the guide block 21 descends below the excircle corner surface 222 of the upper annular punch 22, the upper stripper plate 23 descends below the lower surface of the guide block 21, and the lower stripper plate 32 ascends above the upper surface of the lower annular punch 31. The die assembly process of the die is divided into two strokes of trimming and curling: in the trimming stroke, the material strip 10 is fed between the upper die 2 and the lower die 3 and is positioned above the lower stripper plate 32, then the upper stripper plate 23 contacts the material strip 10, then the guide block 21 penetrates into the central hole 11 of the unformed workpiece for positioning, the upper die 2 continues to descend until the material strip 10 contacts the lower annular punch 31, and the inner cutter face 313 on the lower annular punch 31 and the outer cutter face 231 on the upper stripper plate 23 cooperate to achieve a shearing effect, so that the material strip 10 is cut along a circular range and then enters the hemming stroke. In the curling stroke, the upper annular punch 22 is pressed down to the inside of the edge of the sheared material, the upper annular punch 22 and the lower annular punch 31 press the edge of the sheared material together, and the edge of the sheared material is curled up through the gap between the outer cylindrical surface 221 and the inner cylindrical surface 311, so that the curled edge 12 having a U-shaped edge cross section is obtained. The upper fillet surface 312 and the outer fillet surface 222 are smooth structures, and both are used to prevent indentation and even punching at the turning position of the workpiece 1 during the turning. The utility model discloses an one set of mould has accomplished two steps of side cut and turn-up in one shot processing, makes production serialization for production efficiency has saved the manpower, and has guaranteed the product yield.

As shown in fig. 3 to 5, the bottom of the pilot block 21 has a tapered portion 211 with a large top and a small bottom. When the guide block 21 descends, the tapered part 211 has the function of automatically aligning the axis of the central hole 11, so that the center hole is prevented from being punched and distorted during trimming and turning.

As shown in fig. 3 to 5, the lower annular punch 31 has a through hole 314 at the middle portion thereof, and the lower mold 3 has a blanking hole 33 having a range larger than the lower projection range of the through hole 314. When the die assembly is completed, the whole workpiece 1 is punched into the through hole 314, and when the die assembly is opened, the workpiece 1 is blocked by the lower annular punch 31 and directly falls down to leave the die through the blanking hole 33.

As shown in FIGS. 3 to 5, the aperture of the through hole 314 is 1-2cm larger than the inner diameter of the inner cylindrical surface 311. The inner cylindrical surface 311 is tightly fitted with the outer diameter of the workpiece 1 after molding, and when the punching is completed, the workpiece 1 is entirely located in the through hole 314 and does not contact the inner cylindrical surface 311 any more. When the mold is opened, the edge of the workpiece 1 cannot pass through the inner cylindrical surface 311 in the reverse direction any more, but can only fall down. The aperture of the through hole 314 is made large to prevent the workpiece 1 from being stuck therein when falling down, ensuring that it successfully leaves the die.

As shown in fig. 2 and 3, the lower mold 3 further has a chute 34 below the blanking hole 33. The workpiece 1 dropped from the drop hole 33 eventually slides out along the inclined slide 34 by simply placing a collection frame below the exit of the inclined slide 34. Therefore, on one hand, the workpiece 1 can be prevented from being accumulated below the die in the continuous processing, and on the other hand, the falling height of the workpiece 1 is reduced, so that the workpiece 1 is prevented from being damaged.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. The utility model provides a side cut turn-up integral type mould, includes mould (2) and lower mould (3), its characterized in that: the upper die (2) comprises a guide block (21), an upper annular punch (22) and an upper stripper plate (23) which are arranged from inside to outside, the guide block (21) and the upper stripper plate (23) can float independently, the lower die (3) comprises a lower annular punch (31) and a lower stripper plate (32) which is positioned outside the lower annular punch (31) and can float, the upper annular punch (22) is provided with an outer cylindrical surface (221) and an outer fillet surface (222) positioned below the outer cylindrical surface (221), the lower annular punch (31) is provided with an inner cylindrical surface (311), an upper fillet surface (312) positioned above the inner cylindrical surface (311) and an inner cutter surface (313) positioned outside the upper fillet surface (312), the inner diameter of the inner cylindrical surface (311) is twice as large as the outer diameter of the outer cylindrical surface (221), and the upper stripper plate (23) comprises an outer cutter surface (231) matched with the inner cutter surface (313).

2. The trim and hemming integrated die of claim 1 wherein: the bottom of the guide block (21) is provided with a conical part (211) with a large top and a small bottom.

3. The trimming and hemming integrated die according to claim 1, wherein: the middle part of the lower annular punch head (31) is provided with a through hole (314), and the lower die (3) is provided with a blanking hole (33) with the range larger than the lower projection range of the through hole (314).

4. The trim and hemming integrated die of claim 3 wherein: the aperture of the through hole (314) is 1-2cm larger than the inner diameter of the inner cylindrical surface (311).

5. The trim and hemming integrated die of claim 3 wherein: the lower die (3) is also provided with an inclined slideway (34) positioned below the blanking hole (33).