CN217570500U - Fine blanking die for small flange - Google Patents

Abstract

The utility model discloses a finish stamping die utensil for small flange, including the upper die base, the upper padding plate, the punch holder, the backstop board, take off the flitch, the lower bolster, the lower plate, lower bolster and die holder, install the punch holder on the punch holder, wear to be equipped with in the punch holder and push away the material round pin, it is connected with the dowel steel to push away material round pin top, be equipped with the die in the middle of the lower bolster, be equipped with the lower punch in the die cavity of die, the cover is equipped with the kicking piece ware on the lower punch, kicking piece ware below is equipped with down the dowel steel, lower dowel steel below is connected with the ring of impressing down, be equipped with the lubricating oil runner on the take off flitch, the side of backstop board is equipped with leads the oil groove, the lubricating oil runner is linked together with leads the oil groove, it is linked together with the die cavity that holds the punch holder on backstop board to lead the oil groove. The beneficial effects of the utility model are that: the material can be prevented from being torn in the shearing area and transversely moving outside the shearing area, the uniform material flow is ensured, the blanking precision is high, the blanking quality is stable, and the product plasticity is improved; lubricating oil can be introduced, so that the effects of cooling, lubricating and reducing friction are achieved, and the service life of parts is prolonged.

Description

Fine blanking die for small flange

Technical Field

The utility model relates to a stamping die technical field specifically is a finish punching die mould for small flange.

Background

The stamping die is a special process equipment for processing materials (metal or nonmetal) into parts (or semi-finished products) in cold stamping processing, and is called a cold stamping die (commonly called a cold stamping die). Stamping is a press working method in which a material is pressed at room temperature by a die mounted on a press to be separated or plastically deformed, thereby obtaining a desired part. Flanges, also called flange flanges or beads, are parts of the interconnection between pipes for the connection between the ends of the pipes, and flanges at the inlet and outlet of the equipment for the connection between two pieces of equipment. The small flanges are mostly stainless steel sheets, the toughness of the materials is high, the materials are difficult to punch, the thickness of the materials is thick, and the required specification of the precision of the die is high. The requirements of size, planeness, contour end face circular run-out degree and the like cannot be met by adopting a common process (blanking compound die); and the common process does not have a lubricating pipeline, and parts such as a punch, a female die and the like have large friction, are easy to wear and have short service life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a finish punching die mould for small flange to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a finish stamping die utensil for small flange, includes from the top down upper die base, upper padding plate, punch holder, backstop board, takes off flitch, lower bolster, lower plate, lower bolster and the die holder that sets gradually, install the drift on the punch holder, the punch holder is passed upper padding plate, backstop board and takes off the flitch downwards in proper order to the upper padding plate, wear to be equipped with in the upper punch and push away the material round pin, the top that pushes away the material round pin is connected with the dowel bar, go up the dowel bar and upwards pass upper padding plate and upper die base, the centre of lower bolster is equipped with the die, be equipped with the lower punch in the die cavity of die, the cover is equipped with the kicking piece ware on the lower punch, the below of kicking piece ware is equipped with down the dowel bar, the lower dowel bar passes lower splint, lower bolster and lower die holder downwards in proper order, the below of dowel bar is connected with the ring of impressing down, be equipped with the lubricating oil runner on the stripper board, the side of backstop board that is close to taking off the die cavity is equipped with the oil groove, the lubricating oil runner wears to establish and takes off the inside L shape structure and is linked together with the oil groove of taking off the die cavity of taking off the oil.

Further preferably, a plurality of nitrogen springs are arranged between the upper die holder and the stop plate.

Preferably, the lower surface of the stripper plate is provided with a V-shaped gear ring on both the end surface of the die cavity for accommodating the upper punch and the end surface of the die cavity for accommodating the female die, and the V-shaped gear ring is designed by adopting a profiling structure.

Further preferably, a plurality of first limiting columns are arranged between the stop plate and the upper base plate, the first limiting columns are arranged on the stop plate, and the first limiting columns are arranged along the edge of the upper clamping plate.

Preferably, a plurality of second limiting columns are arranged between the lower template and the stripper plate, the second limiting columns are mounted on the stripper plate, guide columns are arranged at four corners of the lower template, and the guide columns penetrate through the stripper plate upwards.

Preferably, the lower die base is provided with two limiting plates, the two limiting plates are respectively positioned on the feeding side surface and the discharging side surface of the lower die plate, the lower die plate and the limiting plates are respectively provided with a plurality of buoyancy lifting pins, and the buoyancy lifting pins on the lower die plate and the limiting plates are symmetrically arranged along the feeding direction.

Further preferably, the number of the upper clamping plate, the number of the upper punch and the number of the female die are two.

Has the beneficial effects that: the utility model discloses a finish stamping die mould for small flange can produce three kinds of power during operation and act on the mould, namely blanking power, blank holder power and anti-jacking force, produces the blank holder power through V-arrangement ring gear before the blanking begins and compresses tightly the material on the die, can prevent that the material tears in the shearing zone and the material lateral shifting outside the shearing zone, guarantees that the material flows evenly; simultaneously, the ejector compresses the material on the upper punch; when the material is in a compact state under the dual actions of the blank pressing force and the reverse jacking force, the upper punch generates a downward blanking force on the material, the material is blanked along a die cavity knife edge of the female die, and the product is blanked in a pure shearing mode, so that the blanking precision is high, and the blanking quality is stable; the material of the blanking area is in a three-dimensional pressure stress state, so that the plasticity of a formed product can be improved; through the design of the lubricating oil flow passage and the oil guide groove, the punching oil can be guided for lubrication, and the die cavity of the upper punch, the die cavity knife edge of the upper punch, the stop plate and the stripper plate, which are used for accommodating the upper punch, the lower punch, the ejector and the die cavity knife edge of the female die, are cooled, lubricated and reduced in friction, so that the surface is protected from being abraded, and the service life of parts is prolonged.

Drawings

Fig. 1 is an exploded schematic view of a fine blanking die for a small flange according to an embodiment of the present invention;

fig. 2 is a schematic axial view of a fine blanking die for a small flange according to an embodiment of the present invention;

fig. 3 is a schematic front view of a fine blanking die for a small flange according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional structural view of a retainer plate and a stripper plate according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a stopper plate according to an embodiment of the present invention;

fig. 6 is a schematic view of an assembly structure of the upper clamping plate and the stop plate according to the embodiment of the present invention;

FIG. 7 is a schematic structural view of a stop plate and a stripper plate according to an embodiment of the present invention;

fig. 8 is a schematic view of an assembly structure of the lower template disclosed in the embodiment of the present invention;

fig. 9 is an assembly structure diagram of the lower template and the limiting plate disclosed in the embodiment of the present invention.

Reference numerals are as follows: 1-an upper die holder, 2-an upper backing plate, 3-an upper clamping plate, 4-a stop plate, 5-a stripper plate, 6-a lower die plate, 7-a lower clamping plate, 8-a lower backing plate, 9-a lower die holder, 10-an upper punch, 11-a material pushing pin, 12-a first limiting column, 13-a nitrogen spring, 14-a female die, 15-a lower punch, 16-a piece ejector, 17-a second limiting column, 18-a guide column, 19-a limiting plate, 20-a floating pin, 21-a V-shaped gear ring, 22-a lubricating oil flow passage, 23-an oil guide groove, 24-an upper transmission rod, 25-a lower press-in ring and 26-a lower transmission rod.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-9, a fine blanking die for a small flange comprises an upper die holder 1, an upper backing plate 2, an upper clamp plate 3, a stop plate 4, a stripper plate 5, a lower die plate 6, a lower clamp plate 7, a lower backing plate 8 and a lower die holder 9 which are arranged in sequence from top to bottom, wherein an upper punch 10 is installed on the upper clamp plate 3, the upper punch 10 penetrates through the upper clamp plate 3, the stop plate 4 and the stripper plate 5 in sequence from bottom to top, a material pushing pin 11 penetrates through the upper punch 10, an upper force transmission rod 24 is connected above the material pushing pin 11, the upper force transmission rod 24 penetrates through the upper backing plate 2 and the upper die holder 1 from top to bottom, a female die 14 is arranged in the middle of the lower die plate 6, a lower punch 15 is arranged in a die cavity of the female die 14, the small flange is blanked by matching the upper punch 10 with the lower punch 15, wherein the blanked product (i.e., the small flange) is arranged in the die cavity of the female die 14, and waste is arranged in the die cavity of the upper punch 10. The lower punch 15 is sleeved with an ejector 16, a lower dowel bar 26 is arranged below the ejector 16, the lower dowel bar 26 sequentially penetrates through the lower clamping plate 7, the lower backing plate 8 and the lower die holder 9 downwards, and a lower press-in ring 25 is connected below the lower dowel bar 26. After blanking, the die is opened, and a product is ejected out of the die cavity of the female die 14 by lifting the ejector 16; the pushing pin 11 is kept still under the action of the upper dowel bar 24, and drives the stop plate 4, the upper clamping plate 3 and the upper punch 10 to synchronously ascend along with the ascending of the stripper plate 5, so that the waste is ejected out of the die cavity of the upper punch 10.

The stripper plate 5 is provided with a lubricating oil flow passage 22, the side surface of the stop plate 4 close to the stripper plate 5 is provided with an oil guide groove 23, the lubricating oil flow passage 22 penetrates through the stripper plate 5 and is of an L-shaped structure and communicated with the oil guide groove 23, and the end of the oil guide groove 23 far away from the lubricating oil flow passage 22 is communicated with a die cavity of the stop plate 4 for accommodating the upper punch 10. The lubricating oil flow passage 22 is a lubricating oil passage pipeline, lubricating oil is introduced through the lubricating oil flow passage 22, and then the lubricating oil enters the die cavity containing the upper punch 10 on the stop plate 4 through the oil guide groove 23, so that the upper punch 10, the die cavity edge of the upper punch 10, the die cavity containing the upper punch 10 on the stop plate 4 and the stripper plate 5 are cooled and lubricated, the friction coefficient is reduced, the abrasion is reduced, and the service life is prolonged; meanwhile, in the stamping and actuating process of the die, lubricating oil can be stored in an oil groove on the edge of the ejector 16, so that the temperature of die cavity blades of the lower punch 15, the ejector 16 and the female die 14 is reduced, the lubricating effect is realized, the friction is reduced, the surfaces of the female die 14, the lower punch 15 and the ejector 16 are protected from being abraded, and the service life of parts is prolonged.

In the application, a plurality of nitrogen springs 13 are arranged between the upper die holder 1 and the stop plate 4 to replace blank pressing force on a fine blanking machine, so that the stability of the quality of a blanked product is ensured, and the structure of the die is simplified; the die cavity end face of the lower surface of the stripper plate 5 for accommodating the upper punch 10 and the die cavity end face of the female die 14 are both provided with V-shaped gear rings 21, and the V-shaped gear rings 21 are designed by adopting a copying structure. When the fine blanking die for the small flange is used for blanking, three forces, namely a blanking force, an edge pressing force and an anti-jacking force, are exerted on the die. Before blanking begins, materials are pressed into the gear ring of the V-shaped gear ring 21 on the pressing surface of the stripper plate 5 and the female die 14, the materials are pressed on the lower die plate 6, and the blank holder force generated on the inner surface of the gear ring of the V-shaped gear ring 21 is lateral pressure, so that the materials can be prevented from being torn in a blanking area and moving transversely outside the blanking area, and uniform material flow is ensured; at the same time, the counter-lift force of the ejector 16 presses the material against the upper punch 10; when the material is in a compact state under the dual actions of the blank holder force and the reverse ejection force, the upper punch 10 generates a downward blanking force on the material, the material is blanked along a die cavity knife edge of the female die 14, the product is blanked in a pure shearing mode, the blanking precision is high, and the blanking quality is stable. The material of the blanking area is in a three-dimensional pressure stress state, so that the plasticity of a formed product can be improved; after blanking is finished, the blank pressing force and the reverse ejection force are released, the small flange is opened by using a fine blanking die, the stripper plate 5, the stop plate 4 and the upper clamping plate 3 are lifted to drive the upper punch 10 to lift synchronously, and the pushing pin 11 can eject waste materials downwards from the die cavity of the upper punch 10 along with the lifting of the upper punch 10; meanwhile, the lower dowel bar 26 pushes the ejector 16 to ascend, so that a punched product can be ejected upwards from the cavity of the female die 14; under the action of compressed air, the product and waste are blown out of the die, and the blank holder force and the anti-jacking force are effectively compressed in the whole blanking process.

In this application, be equipped with a plurality of first spacing posts 12 between backstop 4 and the upper padding plate 2, a plurality of first spacing posts 12 are installed on backstop 4, and a plurality of first spacing posts 12 set up along the edge of punch holder 3. Through the design of first spacing post 12, can restrict the position of upper padding plate 2 relative backstop 4, protect punch head 10 of punch holder 3 and last installation, improve part life.

In the application, a plurality of second limiting posts 17 are arranged between the lower template 6 and the stripper plate 5, and the plurality of second limiting posts 17 are mounted on the stripper plate 5 and used for limiting the position of the stripper plate 5 relative to the lower template 6 and preventing materials, the upper punch 10 and the lower punch 15 from being crushed; the four corners of lower bolster 6 all is equipped with guide post 18, and guide post 18 upwards wears to locate in taking off flitch 5, and it is accurate to guarantee to take off the traffic direction of flitch 5 when the mould is opened and shut, improves the blanking quality of product.

In this application, be equipped with two limiting plates 19 on the die holder 9, two limiting plates 19 are located the feeding side and the ejection of compact side of lower bolster 6 respectively, all are equipped with a plurality of buoyancy lift pins 20 on lower bolster 6 and the limiting plate 19, and a plurality of buoyancy lift pins 20 on lower bolster 6 and the limiting plate 19 are along pay-off direction symmetrical arrangement. Through the arrangement of the limiting plate 19, the lower template 6, the lower clamping plate 7 and the lower backing plate 8 can be protected, and meanwhile, the material can be prevented from deforming at the edges of the pressing surfaces of the stripper plate 5 and the lower template 6 to influence the feeding precision, so that the blanking of a product is influenced; the lift pins 20 are used to limit material sloshing and improve blanking quality.

In this application, punch holder 3, upper punch 10 and die 14 all have two, improve the blanking efficiency of product, and the maintenance that can be convenient for the mould simultaneously and the change of part reduce the mould cost of repairing.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the protection scope of the present invention.

Claims (7)

1. The utility model provides a finish blanking die utensil for small flange, includes from the top down upper die base (1), upper padding plate (2), punch holder (3), backstop board (4), takes off flitch (5), lower bolster (6), lower plate (7), lower bolster (8) and lower bolster (9) that set gradually, install punch (10) on punch holder (3), punch holder (10) downwards pass punch holder (3), backstop board (4) and take off flitch (5) in proper order, wear to be equipped with in punch holder (10) and push away material round pin (11), the top that pushes away material round pin (11) is connected with last dowel steel (24), go up dowel steel (24) and upwards pass upper padding plate (2) and upper die base (1), the centre of lower bolster (6) is equipped with die (14), be equipped with lower punch (15) in the die cavity of die (14), the cover is equipped with kicker (16) on lower punch (15), the below of kicker (16) is equipped with lower dowel steel (26), lower dowel steel (26) pass lower bolster (7) in proper order, lower bolster (7) and lower bolster (8) are connected with its characteristic lower ring (25) down: be equipped with lubricating oil runner (22) on taking off flitch (5), the side that is close to taking off flitch (5) of backstop board (4) is equipped with leads oil groove (23), lubricating oil runner (22) wear to establish and take off flitch (5) inside be L shape structure and with lead oil groove (23) and be linked together, the die cavity that holds upper punch head (10) on keeping away from lubricating oil runner (22) end and backstop board (4) of leading oil groove (23) is linked together.

2. The fine blanking die for the small flange according to claim 1, characterized in that: and a plurality of nitrogen springs (13) are arranged between the upper die holder (1) and the stop plate (4).

3. The fine blanking die for the small flange according to claim 1, characterized in that: the lower surface of the stripper plate (5) is provided with a V-shaped gear ring (21) in the end face of the die cavity for accommodating the upper punch (10) and the end face of the die cavity for accommodating the female die (14), and the V-shaped gear ring (21) is designed in a copying structure.

4. The fine blanking die for the small flange according to claim 1, characterized in that: be equipped with a plurality of first spacing posts (12) between backstop board (4) and upper padding plate (2), it is a plurality of first spacing post (12) are installed on backstop board (4), and are a plurality of first spacing post (12) set up along the edge of punch holder (3).

5. The fine blanking die for the small flange according to claim 1, characterized in that: a plurality of second limiting columns (17) are arranged between the lower template (6) and the stripper plate (5), the second limiting columns (17) are mounted on the stripper plate (5), guide columns (18) are arranged at four corners of the lower template (6), and the guide columns (18) penetrate through the stripper plate (5) upwards.

6. The fine blanking die for the small flange according to claim 1, characterized in that: the lower die holder (9) is provided with two limiting plates (19), the two limiting plates (19) are respectively positioned on the feeding side surface and the discharging side surface of the lower die plate (6), the lower die plate (6) and the limiting plates (19) are respectively provided with a plurality of buoyancy lifting pins (20), and the buoyancy lifting pins (20) on the lower die plate (6) and the limiting plates (19) are symmetrically arranged along the feeding direction.

7. The fine blanking die for the small flange according to claim 1, characterized in that: the number of the upper clamping plate (3), the number of the upper punch (10) and the number of the female die (14) are two.

Images