CN112264513A

CN112264513A - Staged punching die

Info

Publication number: CN112264513A
Application number: CN202011060255.9A
Authority: CN
Inventors: 严冬祥
Original assignee: Anhui Zhenxiang Precision Technology Co Ltd
Current assignee: Anhui Zhenxiang Precision Technology Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-01-26
Anticipated expiration: 2040-09-30
Also published as: CN112264513B

Abstract

The invention discloses a staged punching die, which comprises an upper die plate, a punch, an elastic clamping piece, a first elastic piece, a connecting plate and a punching plate, wherein: the first elastic piece is fixed between the connecting plate and the punch, the punch is positioned below the connecting plate, and the first elastic piece can elastically deform along the vertical direction; the punch penetrates through the upper template and is connected with the upper template through an elastic clamping piece, and the connecting plate is vertically and slidably mounted on the upper template; the bottom surface of the stamping plate is provided with a first stamping area and a second stamping area, the first stamping area is opposite to the upper template, the second stamping area is opposite to the connecting plate, and when the stamping plate performs stamping movement downwards, the time of collision between the first stamping area and the upper template is earlier than the time of collision between the second stamping area and the connecting plate. The staged punching die disclosed by the invention is simple in structure, avoids secondary processing of a punching hole, increases the processing efficiency and reduces the processing cost.

Description

Staged punching die

Technical Field

The invention relates to the technical field of stamping dies, in particular to a staged punching die.

Background

The punching die is an important accessory for hole machining, and hole machining is carried out on a thinner part through the punching die. The existing punching die generally comprises an upper die and a lower die, a punch is fixed on the upper die, the punch on the upper die is driven by a punching device to downwards impact a component to realize hole machining of the component, the existing punching machining realizes blanking of the punching component through larger downward punching force, but certain burrs are formed above the punched hole of the punching component and even cracks are generated around the punched hole of the punching component due to the larger punching force of the punching device.

Disclosure of Invention

In order to solve the technical problems in the background art, the invention provides a staged punching die.

The invention provides a staged punching die, which comprises an upper template, a punch, an elastic clamping piece, a first elastic piece, a connecting plate and a punching plate, wherein:

the first elastic piece is fixed between the connecting plate and the punch, the punch is positioned below the connecting plate, and the first elastic piece can elastically deform along the vertical direction;

the upper die plate is provided with a connecting groove and a connecting hole, the connecting hole is communicated with the connecting groove, the punch penetrates through the connecting hole and is connected with the upper die plate through an elastic clamping piece, the elastic clamping piece is arranged along the radial direction of the punch and can elastically deform along the vertical direction, and the connecting plate is vertically and slidably mounted in the connecting groove;

the stamping plate is located upper die plate and the stamping plate is fixed on the stamping device, the bottom surface of the stamping plate is provided with a first stamping area and a second stamping area, the first stamping area is opposite to the upper die plate, the second stamping area is opposite to the connecting plate, and when the stamping plate carries out stamping movement downwards, the time of collision between the first stamping area and the upper die plate is earlier than the time of collision between the second stamping area and the connecting plate.

As a further preferable aspect of the present invention, the speed of the punch vertically downward at the moment when the second punching section is in contact with the connecting plate is smaller than the speed of the punching plate vertically downward.

As a further optimized scheme of the invention, the stamping plate is provided with a groove, the second stamping area is the bottom surface of the groove, and the connecting plate is upwards protruded relative to the upper die plate and matched with the groove.

As a further optimized scheme of the invention, the elastic clamping piece comprises an upper plate, a lower plate and a second elastic piece, wherein the upper plate is positioned above the lower plate, the second elastic piece is fixed between the upper plate and the lower plate, and the second elastic piece is elastically deformed along the vertical direction.

As a further preferable aspect of the present invention, the second elastic member is a spring.

As a further preferred solution of the invention, the second elastic element is in a compressed state when not subjected to a force.

As a further optimized proposal of the invention, the invention also comprises a twisting piece which is fixed on the lower plate in a twisting way and is positioned outside the upper template.

As a further optimized scheme of the invention, the upper plate is vertically and slidably mounted on the twisting piece.

As a further optimized proposal of the invention, the upper plate is arranged on the twisting piece through a T-shaped sliding block.

As a further preferable mode of the present invention, the twisting member has a disk shape.

According to the staged punching die, when the punching device drives the punching plate to move downwards to punch the upper die plate and the connecting plate, the first punching area collides with the upper die plate firstly, the upper die plate drives the punch to move downwards, the elastic clamping piece is elastically deformed in the process, so that the punch can punch the punching piece with smaller punching force to enable the punching hole of the workpiece and the periphery of the punching hole to be subjected to certain concave deformation, and when the second punching area is in contact with the connecting plate and drives the connecting plate to move downwards, the first elastic piece is compressed and drives the punch to move downwards, so that the punch can punch the punching piece with larger punching force to complete punching blanking, and further the periphery of the upper surface of the punching hole is formed into a narrower concave ring shape, so that secondary processing of the punching hole is avoided, the processing efficiency is increased, and the processing cost is reduced.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar designations denote like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

A staged punching die as shown in fig. 1-2, comprising an upper die plate 1, a punch 2, an elastic clamping member 3, a first elastic member 4, a connecting plate 5 and a punching plate 6, wherein:

the first elastic piece 4 is fixed between the connecting plate 5 and the punch 2, the punch 2 is positioned below the connecting plate 5, and the first elastic piece 4 can be elastically deformed in the vertical direction;

the upper die plate 1 is provided with a connecting groove 10 and a connecting hole 11, the connecting hole 11 is communicated with the connecting groove 10, the punch 2 penetrates through the connecting hole 11 and is connected with the upper die plate 1 through an elastic clamping piece 3, the elastic clamping piece 3 is arranged along the radial direction of the punch 2, the elastic clamping piece 3 can elastically deform along the vertical direction, and the connecting plate 5 is vertically and slidably installed in the connecting groove 10;

the stamping plate 6 is positioned above the upper template 1, the stamping plate 6 is fixed on a stamping device, the bottom surface of the stamping plate 6 is provided with a first stamping area 60 and a second stamping area 61, the first stamping area 60 is opposite to the upper template 1, namely the first stamping area 60 is positioned right above the upper template, the second stamping area 61 is opposite to the connecting plate 5, namely the second stamping area 61 is positioned right above the connecting plate 5, and when the stamping plate 6 carries out stamping movement downwards, the time of collision between the first stamping area 60 and the upper template 1 is earlier than the time of collision between the second stamping area 61 and the connecting plate 5;

the speed of the punch 2 vertically downward at the moment when the second punching section 61 contacts the connecting plate 5 is smaller than the speed of the punching plate 6 vertically downward;

a groove is formed in the punching plate 6, the second punching area 61 is the bottom surface of the groove, and the connecting plate 5 protrudes upwards relative to the upper template 1 and is matched with the groove;

the elastic clamping piece 3 comprises an upper plate 30, a lower plate 31 and a second elastic piece 32, the upper plate 30 is positioned above the lower plate 31, the second elastic piece 32 is fixed between the upper plate 30 and the lower plate 31, the second elastic piece 32 is elastically deformed along the vertical direction, the second elastic piece 32 is a spring, and when the second elastic piece 32 is not stressed, the second elastic piece 32 is in a compressed state;

the upper template comprises an upper template body 1 and is characterized by further comprising a twisting piece 33, wherein the twisting piece 33 is fixed on the lower plate 31 in a twisting mode, the twisting piece 33 is located outside the upper template body 1, the upper plate 30 is vertically and slidably mounted on the twisting piece 33, the upper plate 30 is mounted on the twisting piece 33 through a T-shaped sliding block 8, and the twisting piece 33 is disc-shaped.

In the working process of the embodiment: when the punching device drives the punching plate 6 to move downwards to punch the upper template 1 receiving plate 5, the upper template 1 drives the punch 2 to move downwards due to the collision of the first punching area 60 and the upper template 1, in the process, the elastic clamping piece 3 generates elastic deformation so as to enable the punch 2 to punch the punching piece with smaller punching force, so that the punching hole of the workpiece and the periphery thereof generate certain concave deformation, thereby completing the deformation stamping of the stamping part with small force, when the second stamping area 61 is contacted with the connecting plate 5 and drives the connecting plate 5 to move downwards, the first elastic part 4 is compressed and the punch 2 is driven to move downwards, so that the punch 2 generates a larger punching force to punch the punching part to complete punching and blanking with larger force, and then make the punching press hole upper surface form narrower downward recessed annular all around, and then avoid the secondary operation in punching press hole, increase machining efficiency, reduce the processing cost.

In order to ensure that the first deformation pressing with a small force is completed to the pressing member and the second blanking pressing with a large force is performed, it is preferable in the present embodiment that the vertical downward speed of the punch 2 is smaller than the vertical downward speed of the pressing plate 6 at the moment when the second pressing area 61 is in contact with the connecting plate 5.

In order to ensure that the deformation stamping with smaller force is firstly completed on the stamping part, and the blanking stamping with larger force is performed again, it is preferable in this embodiment that a groove is formed on the stamping plate 6, the second stamping area 61 is the bottom surface of the groove, and the connecting plate 5 protrudes upwards relative to the upper template 1 and is matched with the groove.

In order to facilitate the installation and removal of the elastic clamping member 3, it is preferable in this embodiment that the elastic clamping member 3 includes an upper plate 30, a lower plate 31 and a second elastic member 32, the upper plate 30 is located above the lower plate 31 and the second elastic member 32 is fixed between the upper plate 30 and the lower plate 31, and the second elastic member 32 is elastically deformed in the vertical direction.

In order to reduce the cost and increase the service life, it is preferable in the present embodiment that the second elastic member 32 is a spring.

In order to ensure the stability of the connection of the resilient clip 3 to the punch 2, it is preferred in this embodiment that the second resilient element 32 is in a compressed state when not subjected to a force.

In order to facilitate the installation and the removal of the elastic clamping piece, it is preferable in this embodiment to further include a twisting piece 33, the twisting piece 33 is fixed on the lower plate 31 in a twisting manner, and the twisting piece 33 is located outside the upper template 1.

In order to avoid the deflection of the upper plate 30 when the second elastic member 32 is compressed, it is preferable in the present embodiment that the upper plate 30 is vertically slidably mounted on the twisting member 33.

In order to avoid the displacement of the upper plate 30 when the second elastic member 32 is compressed, it is preferable in the present embodiment that the upper plate 30 is mounted on the toggle member 33 through the T-shaped slider 8.

In order to facilitate the mounting and dismounting of the elastic clamping member, it is preferable that the twisting member 33 has a disk shape in the present embodiment.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a staged cut-out press which characterized in that, includes cope match-plate pattern (1), drift (2), elasticity joint spare (3), first elastic component (4), connecting plate (5) and punching press board (6), wherein:

the first elastic piece (4) is fixed between the connecting plate (5) and the punch (2), the punch (2) is located below the connecting plate (5), and the first elastic piece (4) can elastically deform in the vertical direction;

the upper die plate (1) is provided with a connecting groove (10) and a connecting hole (11), the connecting hole (11) is communicated with the connecting groove (10), the punch (2) penetrates through the connecting hole (11) and is connected with the upper die plate (1) through the elastic clamping piece (3), the elastic clamping piece (3) is arranged along the radial direction of the punch (2), the elastic clamping piece (3) can elastically deform along the vertical direction, and the connecting plate (5) is vertically and slidably mounted in the connecting groove (10);

the stamping plate (6) is located above the upper die plate (1), the stamping plate (6) is fixed on the stamping device, the bottom surface of the stamping plate (6) is provided with a first stamping area (60) and a second stamping area (61), the first stamping area (60) is opposite to the upper die plate (1), the second stamping area (61) is opposite to the connecting plate (5), and when the stamping plate (6) performs downward stamping motion, the time of collision between the first stamping area (60) and the upper die plate (1) is earlier than the time of collision between the second stamping area (61) and the connecting plate (5).

2. The staged punching die according to claim 1, wherein the speed of the punch (2) vertically downwards at the instant when the second punching zone (61) is in contact with the web (5) is smaller than the speed of the punching plate (6) vertically downwards.

3. The staged punching die of claim 1, wherein the punch plate (6) is recessed, the second punch section (61) is a bottom surface of the recess, and the web (5) is raised upwardly relative to the upper die plate (1) and mates with the recess.

4. The knock-out punch die of claim 1, wherein the resilient snap (3) comprises an upper plate (30), a lower plate (31), and a second resilient member (32), the upper plate (30) being positioned above the lower plate (31) and the second resilient member (32) being secured between the upper plate (30) and the lower plate (31), the second resilient member (32) being resiliently deformed in a vertical direction.

5. The knock-out punch of claim 4 wherein the second resilient member (32) is a spring.

6. The knock-out punch of claim 4, wherein the second resilient member (32) is in compression when unstressed.

7. The knock-out punch of claim 4 further comprising a twist member (33), the twist member being secured to the lower plate (31) and the twist member (33) being located outside the upper platen (1).

8. The knock-down punch die of claim 7, wherein the upper plate (30) is vertically slidably mounted on the twister (33).

9. The knock-down punch die of claim 4, wherein the upper plate (30) is mounted on the toggle (33) by means of a T-shaped slide (8).

10. The knock-down punch of claim 9 wherein the twister (33) is disc-shaped.