CN212598346U

CN212598346U - Combined stamping die

Info

Publication number: CN212598346U
Application number: CN202021246604.1U
Authority: CN
Inventors: 朱威; 莫大强
Original assignee: Guangzhou Youdejia Mould Technology Co ltd
Current assignee: Guangzhou Youdejia Mould Technology Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-02-26
Anticipated expiration: 2030-06-30

Abstract

The utility model provides a modular stamping die relates to the stamping die field. Modular stamping die includes first mould and second mould, and first mould is for being equipped with middle part bulge's type mould structure, and the second mould is including the character cut in bas-relief mould body that is equipped with middle part groove portion to and install the compact heap in middle part groove portion, middle part bulge and the unsmooth cooperation of middle part groove portion, and the compact heap sets up along middle part groove portion opening direction activity, is connected with elasticity roof pressure structure between compact heap and the character cut in bas-relief mould body. In the stamping process, the elastic jacking structure jacks the pressing block to the position of the notch, and at the initial stage of bending deformation of the flat plate material, the pressing block is tightly jacked at the middle position of the flat plate material, so that the middle section of the flat plate material is always attached to the upper side surface of the middle protruding part of the first die, and the middle section is prevented from bulging upwards and deforming; the elastic jacking structure can elastically contract, so that the flat material can be punched into a U-shaped piece.

Description

Combined stamping die

Technical Field

The utility model relates to a stamping die technical field especially relates to a modular stamping die.

Background

In industrial manufacturing, stamping is a common machining process, and a die mounted on a press is used to apply pressure to a material, thereby plastically deforming or shearing the material.

For plate processing, a flat material is usually punched and bent to form a U-shaped member, wherein the die includes two separated parts, as shown in fig. 3, one of the parts is a convex die 1a, the other part is a concave die 2a, and the convex die 1a and the concave die 2a are in concave-convex fit. In the stamping process, the convex die 1a and the concave die 2a move close to each other, the flat plate material 4a is attached to the convex surface of the convex die 1a and the concave surface of the concave die 2a to deform, and when the convex die 1a and the concave die 2a are completely pressed in place, the stamping of the U-shaped part is completed.

At the initial stage of stamping, because the flat plate material 4a is under three-point stress, the supporting force with the middle part upward and the extrusion forces with the left and right sides downward respectively, for the flat plate material 4a with high material hardness, bulging deformation is easily generated at the middle part firstly, so that the redundant bulging deformation part 40a is positioned above the middle bulge part of the convex-shaped die 1a, and then the middle part of the U-shaped piece is folded and deformed after being pressed in place, and the stamping forming quality is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, an object of the utility model is to provide a modular stamping die to the middle part of dull and stereotyped material at first produces the bulging deformation in the punching press man-hour of solution, and the pressfitting targets in place the mid portion of back U-shaped spare and forms the fold deformation, the poor problem of punching press shaping quality.

The utility model discloses a combined stamping die's technical scheme does:

the combined stamping die comprises a first die and a second die, wherein the first die is of a convex die structure provided with a middle protruding part, the second die comprises a concave die body provided with a middle groove part and a pressing block arranged in the middle groove part of the concave die body, the middle protruding part is in concave-convex fit with the middle groove part, the pressing block is movably arranged along the opening direction of the middle groove part, and an elastic jacking structure is connected between the pressing block and the concave die body.

Has the advantages that: the pressing block is arranged in the middle groove part of the concave die body and movably arranged along the opening direction of the middle groove part, the elastic jacking structure jacks the pressing block to a position close to the notch in the process of stamping the flat plate material, and the pressing block is utilized to jack the middle position of the flat plate material at the initial stage of the concave die body pressing the flat plate material to cause the flat plate material to be bent and deformed, so that the middle section of the flat plate material is always attached to the upper side surface of the middle convex part of the first die, and the middle section of the flat plate material is prevented from being bulged upwards and deformed; in addition, in the process of closing the first die and the second die, the elastic jacking structure elastically contracts to ensure that the middle groove part of the second die moves to the position completely matched with the middle convex part of the first die, so that the flat material can be punched into a U-shaped part, and the punching forming quality is better.

Furthermore, a sunk groove is formed in the groove bottom of the groove portion in the middle of the concave die body, and the pressing block is accommodated and installed in the sunk groove.

Furthermore, an assembly groove is formed in the concave die body and is arranged at a position corresponding to the sink groove, and the elastic jacking structure is arranged in the assembly groove.

Furthermore, the elastic jacking structure comprises a hydraulic oil cylinder, a cylinder body of the hydraulic oil cylinder is fixed in the assembling groove, and a push rod of the hydraulic oil cylinder is connected with the pressing block.

Furthermore, the elastic jacking structure further comprises a cylindrical compression spring, the cylindrical compression spring is sleeved outside the hydraulic oil cylinder, and the cylindrical compression spring is connected between the assembling groove and the pressing block.

Furthermore, the pressing block is in clearance fit with the groove wall of the groove part in the middle of the concave die body.

Furthermore, the size of a gap between the pressing block and the groove wall of the groove part in the middle of the concave die body is any value from 3mm to 20 mm.

Furthermore, the edge of the concave mould body close to the middle groove part is provided with a round corner part, and the edge of the middle convex part of the first mould is correspondingly provided with a round corner part.

Drawings

Fig. 1 is a schematic partial sectional view of a combined type stamping die according to an embodiment 1 of the present invention;

fig. 2 is a schematic front view of a combined stamping die according to an embodiment 1 of the present invention;

FIG. 3 is a schematic structural diagram of a flat material stamping process using a raised and recessed die in the prior art.

In fig. 1 and 2: 1. a first mold; 10. a middle convex portion; 2. a second mold; 20. A middle groove portion; 21. sinking a groove; 22. assembling a groove; 23. a rounded corner portion; 3. a compression block; 5. an elastic jacking structure; 51. a hydraulic cylinder; 52. a cylindrical pressure spring;

in fig. 3: 1a, a convex character die; 2a, a concave character die; 4a, flat plate materials; 40a, bulging the deformed portion.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The utility model discloses a modular stamping die's embodiment 1, as shown in fig. 1, fig. 2, modular stamping die includes first mould 1 and second mould 2, first mould 1 is the type of a chinese character style of calligraphy mould structure for being equipped with middle part bulge 10, second mould 2 is including the type of a chinese character ' ao's mould body that is equipped with middle part groove portion 20, and install compact heap 3 in the middle part groove portion 20 of type of a chinese character ' ao's mould body, middle part bulge 10 and the unsmooth cooperation of middle part groove portion 20, compact heap 3 sets up along the opening direction activity of middle part groove portion 20, be connected with elasticity roof pressure structure 5 between compact heap 3 and the type of a chinese character ' ao's mould body.

The pressing block 3 is arranged in the middle groove part 20 of the concave die body, the pressing block 3 is movably arranged along the opening direction of the middle groove part 20, in the process of stamping the flat plate material, the elastic jacking structure 5 jacks the pressing block 3 to a position close to a notch, and in the initial stage of the concave die body for compressing the flat plate material to cause the flat plate material to be bent and deformed, the pressing block 3 is utilized to jack the middle position of the flat plate material, so that the middle section of the flat plate material is always attached to the upper side surface of the middle convex part 10 of the first die 1, and the middle section of the flat plate material is prevented from being bulged upwards and deformed; moreover, in the process of closing the first die 1 and the second die 2, the elastic jacking structure 5 elastically contracts to ensure that the middle groove part 20 of the second die 2 moves to a position completely matched with the middle convex part 10 of the first die 1, so that the flat material can be punched to form a U-shaped part, and the punching forming quality is better.

The bottom of the middle groove part 20 of the concave die body is also provided with a sinking groove 21, the pressing block 3 is accommodated and installed in the sinking groove 21, the bottom of the middle groove part 20 is provided with the sinking groove 21 matched with the pressing block 3 in an accommodating manner, and after the first die 1 and the second die 2 are matched in place, the pressing block 3 is enabled to be parallel and level with the bottom of the middle groove part 20, and the complete extrusion effect on the middle section of the flat plate material is ensured.

An assembly groove 22 is formed in the concave die body, the assembly groove 22 is arranged at a position corresponding to the sinking groove 21, and the elastic jacking structure 5 is installed in the assembly groove 22. In this embodiment, the elastic pressing structure 5 comprises a hydraulic oil cylinder 51, the cylinder body of the hydraulic oil cylinder 51 is fixed in the assembling groove 22, and the push rod of the hydraulic oil cylinder 51 is connected with the pressing block 3. Moreover, the elastic jacking structure 5 further comprises a cylindrical compression spring 52, the cylindrical compression spring 52 is sleeved outside the hydraulic oil cylinder 51, and the cylindrical compression spring 52 is connected between the assembling groove 22 and the pressing block 3.

The elastic jacking structure 5 is designed into a hydraulic oil cylinder 51 and a cylindrical compression spring 52, so that the pressing block 3 can apply enough pressing force to the middle section of the flat plate material at the initial stage of stamping, and the middle section of the flat plate material is stably attached to the upper side surface of the middle protruding part 10 of the first die 1.

Wherein, the pressing block 3 is in clearance fit with the groove wall of the middle groove part 20 of the concave die body. Specifically, the size of the gap between the pressing block 3 and the groove wall of the middle groove part 20 of the concave die body is 5mm, so that the pressing block 3 can be elastically ejected out and retracted back to move in the middle groove part 20, and the problem that the pressing block 3 is small in pressing surface of the middle section of the flat plate material to cause local bulging is solved.

In addition, a round portion 23 is provided at an edge of the recessed body of the second mold 2 near the central recessed portion 20, and a corresponding round portion 23 is provided at an edge of the central protruding portion 10 of the first mold 1. The round corner part 23 is arranged at the edge position, so that the smoothness of edge transition is improved, and the problem that flat plate materials are directly sheared and broken during die assembly is solved.

The utility model discloses a other concrete embodiment of modular stamping die, in order to satisfy different user demands, clearance dimension between the cell wall of the middle part recess part of compact heap and character cut in bas-relief shape mould body can not only be limited to 5mm in concrete embodiment 1, still can be with the clearance dimension design between the cell wall of the middle part recess part of compact heap and character cut in bas-relief shape mould body for 3mm to 20mm between other arbitrary numerical values, can ensure equally that the compact heap carries out elasticity in the middle part recess part ejecting and return the removal of contracting.

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 modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a combined stamping die, characterized by includes first mould and second mould, first mould is the convex character form mould structure for being equipped with middle part convex part, the second mould is including the character cut in bas-relief shape mould body that is equipped with middle part groove portion to and install the compact heap in the middle part groove portion of character cut in bas-relief shape mould body, middle part convex part with middle part groove portion unsmooth cooperation, the compact heap is followed the opening direction activity of middle part groove portion sets up, the compact heap with be connected with elasticity roof pressure structure between the character cut in bas-relief shape mould body.

2. The combined type stamping die as claimed in claim 1, wherein a sunken groove is further formed in the bottom of the groove portion in the middle of the female die body, and the pressing block is accommodated in the sunken groove.

3. The combined stamping die as claimed in claim 2, wherein the female die body is provided with an assembly groove, the assembly groove is arranged at a position corresponding to the sink groove, and the elastic pressing structure is mounted in the assembly groove.

4. The combined stamping die as claimed in claim 3, wherein the elastic pressing structure includes a hydraulic cylinder, a cylinder body of the hydraulic cylinder is fixed in the assembling groove, and a push rod of the hydraulic cylinder is connected with the pressing block.

5. The combined stamping die of claim 4, wherein the elastic pressing structure further comprises a cylindrical compression spring, the cylindrical compression spring is sleeved outside the hydraulic oil cylinder, and the cylindrical compression spring is connected between the assembling groove and the pressing block.

6. The modular stamping die of claim 1, wherein the pressing block is in clearance fit with a groove wall of the central groove portion of the female die body.

7. The combined type stamping die as claimed in claim 6, wherein the clearance between the pressing block and the groove wall of the central groove part of the female die body is any value between 3mm and 20 mm.

8. The modular stamping die of claim 1, wherein the concave die body has a rounded portion at an edge thereof adjacent to the central recessed portion, and the first die has a rounded portion at an edge thereof corresponding to the central raised portion.