CN217647401U

CN217647401U - Trimming and punching compound die

Info

Publication number: CN217647401U
Application number: CN202221259482.9U
Authority: CN
Inventors: 唐玉金; 赵星烨
Original assignee: Jiangyin Kaixin Die Forging Co ltd
Current assignee: Jiangyin Kaixin Die Forging Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-10-25
Anticipated expiration: 2032-05-24

Abstract

The utility model discloses a side cut compound die that punches a hole, including the lower mould with set up the drift directly over the lower mould, the drift is used for connecting elevating system in order to cut edge the blank with the lower mould cooperation, and the lower mould includes the die holder, is provided with on the die holder along the closed ring-shaped mold core of vertical direction removal under the drift, and die holder and mold core pass through the elastic component and connect, and the inboard of mold core is provided with the subassembly that punches a hole, and the top surface of drift is provided with the holding port, and the projection of the subassembly top surface that punches a hole on the horizontal plane sets up in the projection of holding port on the horizontal plane. This side cut compound die that punches a hole only needs to last the decline through elevating system control drift, can be in proper order to only need the side cut and punch a hole the operation of placing the blank on the lower mould, practice thrift the production space, simplify the process, guarantee positioning accuracy's basis on, further simplified equipment structure, reduce cost, and convenient operation has improved production efficiency.

Description

Trimming and punching compound die

Technical Field

The utility model belongs to the technical field of the compound die technique and specifically relates to a side cut compound die that punches a hole is related to.

Background

In industrial production, punching and trimming are two common processes, and are generally used for performing finish machining on a forged blank so as to improve the quality of a product.

In the prior art, two sets of dies are usually adopted for punching and trimming, so that the cost is increased, the production space is occupied, the production efficiency is reduced, secondary positioning is required in the machining process, and the position deviation exists in the secondary positioning, so that the waste products after trimming and punching are increased.

Therefore, the chinese utility model with publication number CN212664655U discloses a trimming and punching composite die; including last mould device and lower mould device, lower mould device includes base, lower bolster, a plurality of guide pillar, a plurality of spring, lower trimming die and a plurality of nut, and the top surface of lower trimming die is equipped with and punches a hole, goes up the mould device and includes guide pillar, cope match-plate pattern, fixing base, goes up trimming die, a plurality of support columns, drift, drive arrangement and telescopic link. The trimming and punching composite die can simultaneously perform trimming and punching, reduce the cost and save the occupied area of a production line.

However, the above trimming and punching compound die has a complex structure, when a blank is processed, the lifting mechanism is required to drive the upper die device to descend to enable the upper trimming die and the lower trimming die to be matched, the blank is trimmed, and then the driving device acts on the punch through the telescopic rod to perform punching processing.

Therefore, there is a need for an improved trimming and punching compound die in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, provide a simplify structure, reduce cost and further improve machining efficiency's side cut compound die that punches a hole.

In order to realize the technical effects, the utility model adopts the technical scheme that: the lower die comprises a die holder, a closed ring-shaped die core which moves under the punch along the vertical direction is arranged on the die holder, the die holder is connected with the die core through an elastic piece, a punching assembly is arranged on the inner side of the die core, an accommodating opening is formed in the top surface of the punch, and the projection of the top surface of the punching assembly on the horizontal plane is arranged in the projection of the accommodating opening on the horizontal plane.

Preferably, in order to realize the punching operation of the blank, the punching assembly comprises a stamping part which moves along the vertical direction inside the die core and a limiting support part which is arranged under the stamping part and is fixedly connected with the die holder.

Preferably, in order to ensure punching accuracy, the stamping part is in clearance fit with the accommodating opening.

Preferably, in order to realize stable support of the stamping part, a limiting bulge is arranged on the circumferential inner wall of the mold core, and the stamping part is abutted against the limiting bulge.

Preferably, in order to facilitate the connection between the elastic part and the die holder and between the elastic part and the die core, a bottom plate is fixedly connected below the die holder, and the elastic part is arranged between the bottom plate and the die core.

Preferably, in order to ensure the stable lifting movement of the mold core, the elastic part and the lifting plate are arranged between the mold cores, the elastic part is provided with a plurality of lifting plates, and the elastic parts are uniformly distributed between the lifting plates and the bottom plate.

Preferably, in order to further ensure the stable lifting movement of the mold core, the elastic pieces are uniformly distributed on a cylindrical surface which takes the axis of the mold core as a central line.

Preferably, in order to ensure stable lifting movement of the lifting plate and improve punching precision, the die holder is connected with the bottom plate through a fixing frame, and the lifting plate slides in the vertical direction in a space formed by the fixing frame, the bottom plate and the die holder in a surrounding manner.

Preferably, in order to realize stable lifting movement of the die core and improve punching precision, the elastic piece is a nitrogen spring.

Preferably, in order to facilitate stable placement of the blank and guarantee the trimming precision, a supporting protrusion used for supporting the blank flashes is arranged on the top surface of the die holder, a positioning through hole is formed in the die holder, one hole opening of the positioning through hole is formed in the top surface of the supporting protrusion, and the die core is arranged on the inner side of the positioning through hole.

To sum up, the utility model discloses side cut compound die that punches a hole only needs to last the decline through elevating system control drift compared with prior art, can be in proper order to only need side cut and the operation of punching a hole placing the blank on the lower mould, practice thrift the production space, simplify the process, guarantee positioning accuracy's basis on, further simplified equipment structure, reduce cost, and convenient operation has improved production efficiency.

Drawings

FIG. 1 is a schematic view of the structure of embodiment 1;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 isbase:Sub>A sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a schematic view of the structure of the punch and die holder according to embodiment 1;

FIG. 7 is an exploded view of FIG. 6;

FIG. 8 is a top view of FIG. 6;

FIG. 9 is a schematic structural view of embodiment 2;

FIG. 10 is a schematic structural view from another perspective in example 2;

in the figure: 100. the stamping die comprises a stamping head, 101, an accommodating opening, 200, a die holder, 201, a supporting protrusion, 202, a positioning through hole, 300, a die core, 301, a limiting protrusion, 400, an elastic piece, 500, a stamping piece, 600, a limiting supporting piece, 700, a bottom plate, 800, a lifting plate, 900, a fixing frame, 901, a first side plate, 902, a second side plate, 903, a first bolt, 110, a top plate, 120, a second bolt, 130, a bottom mounting plate, 140, a top mounting plate and 150.T-shaped grooves.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Example 1

As shown in fig. 1 to 8, the trimming and punching compound die of embodiment 1 includes a lower die, a punch 100 is disposed right above the lower die, a top plate 110 is fixedly connected to a top surface of the punch 100, the top plate 110 is used to connect an elevating mechanism (the elevating mechanism is preferably a mechanical structure such as a hydraulic cylinder that drives the top plate 110 and the punch 100 to perform an elevating motion, and is not shown in the drawings), the elevating mechanism drives the top plate 110 to descend so that the punch 100 and the lower die cooperate to cut off flash from a blank placed on the lower die, the lower die includes a die holder 200, a positioning through hole 202 is disposed at a center of the die holder 200, a supporting protrusion 201 is disposed on a top surface of the die holder 200, an opening at a top of the positioning through hole 202 is disposed on a top surface of the supporting protrusion 201, a closed-ring-shaped die core 300 is disposed inside the positioning through hole 202, the die core 300 is inserted into the positioning through hole 202 so that the die core 300 can move in a vertical direction, the die holder 200 and the die core 300 are connected through an elastic member 400, a punching assembly is disposed inside of the die core 300, the punching assembly includes a limiting support member 500 and a horizontal plane disposed right below the punch 500 and a horizontal plane is disposed on a horizontal plane of the stamping member 101, the horizontal plane that is disposed on the horizontal plane.

When the trimming and punching compound die is used, a blank to be processed is placed on the lower die, the trimming part of the blank is opposite to the supporting protrusion 201, and the supporting protrusion 201 is used for supporting the flash, so that the blank can be conveniently and stably placed, and the accurate flash cutting function of the blank can be realized.

The lifting mechanism drives the top plate 110 and the punch 100 to move downwards, and after the punch 100 is contacted with the blank, the punch is matched with the lower die to realize the function of cutting off the flash of the blank; the lifting mechanism continuously drives the top plate 110 and the punch 100 to descend, so as to drive the blank with the flash removed, the mold core 300 below the blank and the stamping part 500 inside the mold core 300 to move downwards, the elastic part 400 is compressed until the bottom of the stamping part 500 is abutted against the limiting support part 600, at the moment, the blank and the mold core 300 continuously descend, so that the stamping part 500 moves upwards relative to the blank, the top surface of the stamping part 500 acts on the bottom of the blank, holes are formed in the blank, and the material of the hole-forming part enters the accommodating port of the punch 100. So for cut edge and punch a hole and go on same mould, simplified equipment structure, improved machining efficiency, reduced production occupation space, moreover, the device only need last the downstream through elevating system drive roof 110, can cut edge and punch a hole the operation, it is convenient to use, simple structure has further reduced device cost, has improved machining efficiency.

Stamping workpiece 500 and hold a 101 clearance fit, adopt this design for stamping workpiece 400 and the circumference inner wall that holds a 101 mutually support, carry out accurate punching a hole to the blank, improved the machining precision to the blank.

The circumferential inner wall of the mold core 300 is provided with a limiting bulge 301, and the stamping part 500 is abutted to the limiting pushing part 301. The stamping part 500 can be supported by the limiting protrusions 301 on the inner side wall of the mold core 300, and the stamping part 500 is prevented from falling downwards to be separated from the mold core 300.

A bottom plate 700 is fixedly connected below the die holder 200 through a fixing frame 900, the fixing frame 900 comprises two first side plates 901 fixed above the bottom plate 700 in parallel and two second side plates 902 fixed above the bottom plate 700 in parallel and perpendicular to the first side plates 901, the first side plates 901 are fixedly connected through first bolts 903 and second side plates 902, and two sides of the die holder 200 are fixedly connected with the first side plates 901 through second bolts 120; the inner side of the fixing frame 900 is provided with a lifting plate 800, the lifting plate 800 is provided with an opening through which the limiting support 600 passes, the lifting plate 800 is fixed below the mold core 300, and four side walls of the lifting plate are respectively attached to two first side plates 901 and two second side plates 902; the number of the elastic pieces 400 is four, the two ends of each elastic piece 400 are respectively connected with the lifting plate 800 and the bottom plate 700, and the four elastic pieces 400 are uniformly distributed on a cylindrical surface which takes the axial lead of the mold core 300 as the central line.

After the structure is adopted, the fixed connection between the die holder 200 and the bottom plate 700 is realized through the fixing frame 900, and the lifting plate 800 can slide in a space formed by the fixing frame 900, the bottom plate 700 and the die holder 200 in the vertical direction by utilizing the mutual attachment of the lifting plate 800 and the two first side plates 901 and the two second side plates 90. Because the lifting plate 800 is fixed below the mold core 300, stable lifting movement of the mold core 300, the blank and the stamping part 500 is further ensured, and the punching and hair processing precision is improved; moreover, the elastic piece 400 is connected with the die holder 200 and the die core 300 through the lifting plate 800 and the bottom plate 700, the number of the elastic pieces 400 is four, the elastic pieces are uniformly distributed on a cylindrical surface taking the axial lead of the die core 300 as a central line, so that the lifting plate 800 can uniformly bear pressure to ensure stable lifting movement of the lifting plate 800, moreover, the elastic piece 400 adopts a nitrogen spring, the nitrogen spring is a novel elastic component taking high-pressure nitrogen as a working medium, the nitrogen spring has small volume, large elasticity, long stroke, stable work, precise manufacture, long service life (one million times), gentle elastic curve and no need of pre-tightening and the like, the conventional elastic components such as a metal spring, rubber, an air cushion and the like are difficult to complete, the design and manufacture of the die are simplified, the installation and adjustment of the die are convenient, the service life of the die is prolonged, and the stability of the product quality is ensured.

Example 2

As shown in fig. 9 and 10, the trimming and punching compound die of embodiment 2 is based on embodiment 1, and is different in that a top mounting plate 140 is disposed above a top plate 110, the top mounting plate 140 is used for connecting a lifting mechanism, a bottom mounting plate 130 is disposed below a bottom plate 700, a projection of the bottom mounting plate 130 on a horizontal plane coincides with a projection of the top mounting plate 140 on the horizontal plane, four T-shaped grooves 150 which are distributed side by side at equal intervals are disposed on a top surface of the bottom mounting plate 130 and a bottom surface of the top mounting plate 140, the T-shaped grooves 150 are through grooves, and the T-shaped grooves 150 on the bottom mounting plate 130 and the T-shaped grooves 150 on the top mounting plate 140 are disposed in a one-to-one correspondence and opposite to each other. Two U-shaped notches are formed in both sides of the bottom plate 700 and both sides of the top plate 110, locking bolts are screwed in the notches, the bottom plate 700 is locked on the bottom mounting plate 130 through the locking bolts screwed into the T-shaped grooves 150, and the top plate 110 is locked on the top mounting plate 140.

In this embodiment, by adjusting the horizontal positions of the top mounting plate 140 and the bottom mounting plate 130, the projections of the top mounting plate 140 and the bottom mounting plate 130 on the horizontal plane are overlapped, the bottom plate 700 is slid along the T-shaped groove 150 on the bottom mounting plate 130, the bottom plate 700 is locked on the bottom mounting plate 130 by the locking bolt after the positions of the bottom plate and the bottom mounting plate are adjusted, the top plate 110 is slid along the T-shaped groove 150 on the top mounting plate 140, and the top plate 110 is locked on the top mounting plate 140 by the locking bolt after the positions of the top plate and the bottom mounting plate are adjusted, so that the relative positions of the punch 100 and the lower die can be flexibly adjusted in the actual processing process of the blank, and after the punch 100 is driven by the lifting mechanism to move downwards, the high-precision trimming and punching operation of the blank can be realized, and the product forming quality is improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a side cut compound die that punches a hole, includes the lower mould and sets up in drift (100) directly over the lower mould, drift (100) are used for connecting elevating system in order with the lower mould cooperation is cut edge its characterized in that to the blank:

the lower die comprises a die holder (200), a closed ring-shaped die core (300) which moves in the direction of the vertical direction under the punch (100) is arranged on the die holder (200), the die holder (200) and the die core (300) are connected through an elastic piece (400), a punching assembly is arranged on the inner side of the die core (300), an accommodating opening (101) is formed in the top surface of the punch (100), and the projection of the top surface of the punching assembly on the horizontal plane is arranged in the projection of the accommodating opening (101) on the horizontal plane.

2. The trimming and punching compound die according to claim 1, wherein: the punching assembly comprises a stamping part (500) which moves on the inner side of the mold core (300) along the vertical direction and a limiting support part (600) which is arranged under the stamping part (500) and is fixedly connected with the mold base (200).

3. The trimming and punching compound die according to claim 2, wherein: the stamping part (500) is in clearance fit with the accommodating opening (101).

4. The trimming and punching compound die according to claim 2, characterized in that: the circumference inner wall of mold core (300) is provided with spacing arch (301), stamping workpiece (500) with spacing arch (301) looks butt.

5. The trimming and punching compound die according to claim 1, wherein: the lower part of the die holder (200) is fixedly connected with a bottom plate (700), and the elastic part (400) is arranged between the bottom plate (700) and the die core (300).

6. The trimming and punching compound die according to claim 5, wherein: the elastic piece (400) and be provided with lifter plate (800) between mold core (300), elastic piece (400) are provided with a plurality ofly, evenly distributed in lifter plate (800) with between bottom plate (700).

7. The trimming and punching compound die according to claim 6, characterized in that: the elastic pieces (400) are uniformly distributed on a cylindrical surface which takes the axial lead of the mold core (300) as a central line.

8. The trimming and punching compound die according to claim 6, characterized in that: die holder (200) with bottom plate (700) are connected through fixed frame (900), lifter plate (800) along the vertical direction slide in fixed frame (900) bottom plate (700) with die holder (200) enclose in closing the space that forms.

9. The trimming and punching compound die according to any one of claims 1 to 8, wherein: the elastic piece (400) is a nitrogen spring.

10. The trimming and punching compound die according to any one of claims 1 to 8, wherein: the die holder is characterized in that a supporting protrusion (201) used for supporting blank fins is arranged on the top surface of the die holder (200), a positioning through hole (202) is formed in the die holder (200), one hole of the positioning through hole (202) is formed in the top surface of the supporting protrusion (201), and the die core (300) is arranged on the inner side of the positioning through hole (202).