CN111974868B

CN111974868B - Anti-scratch device for hot trimming die

Info

Publication number: CN111974868B
Application number: CN202010690919.3A
Authority: CN
Inventors: 徐维维; 王云成; 费冬阳; 高敬夫; 甘相璐
Original assignee: Gz Tooling Group Automobile Technology Co ltd
Current assignee: Gz Tooling Group Automobile Technology Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2024-12-20
Anticipated expiration: 2040-07-17
Also published as: CN111974868A

Abstract

The present invention discloses an anti-scratch device for a hot trimming die, which belongs to the field of plastic forming, and particularly relates to a hot trimming die for a forging; it comprises an upper die insert, an upper trimming insert, a lower die insert and a lower trimming insert, wherein the upper trimming insert is fixedly arranged on the bottom surface of the upper die insert, the lower trimming insert is fixedly arranged on the lower die insert, the inner edge of the lower trimming insert cooperates with the outer edge of the upper trimming insert to cut the forging together; a plurality of groups of anti-scratch devices are arranged on one side of the lower trimming insert close to the lower die insert, and the plurality of groups of anti-scratch devices are all arranged on the outer side of the cutting edge of the lower trimming insert. The present invention has the advantages of simple structure, convenient loading and unloading, low cost, etc., and is convenient for on-site process debugging and rectification.

Description

Scratch-proof device for hot trimming die

Technical Field

The invention belongs to the field of plastic forming, and particularly relates to a hot trimming die for a forging piece.

Background

The hot forming trimming die is different from the cold stamping die in the stamping production process, and when the upper die moves downwards, the part is trimmed in the forming process, so that the lower trimming insert is easy to scrape the part, and scratches are generated.

Disclosure of Invention

The invention aims to provide a scratch-resistant device for a hot trimming die, which aims to solve the technical problem that a part is trimmed in the forming process, and a lower trimming insert is easy to scratch the part to generate scratches.

In order to achieve the above purpose, the invention provides a scratch-proof device for a hot trimming die, which comprises the following specific technical scheme:

the scratch-resistant device for the hot trimming die is characterized by comprising an upper die insert, an upper trimming insert, a lower die insert and a lower trimming insert, wherein the upper trimming insert is fixedly arranged on the bottom surface of the upper die insert, the lower trimming insert is fixedly arranged on the lower die insert, and the inner edge of the lower trimming insert is matched with the outer edge of the upper trimming insert to jointly cut a forging;

The side that is close to the lower mould insert of lower side cut insert is provided with multiunit scratch prevention device, multiunit scratch prevention device all sets up the outside of the blade of lower side cut insert.

Further, the scratch-preventing device comprises a guide block, wherein the height of the guide block is greater than or equal to the height of the cutting edge of the lower trimming insert.

Further, the scratch-proof device further comprises a screw and a gasket, the bottom end of the guide block is connected with the lower trimming insert, a groove is formed in one side of the top end of the guide block, the gasket is arranged in the groove, the screw is arranged in the gasket, and the screw penetrates through the gasket and is fixedly connected with the lower trimming insert.

Further, the guide block is cylindrical.

Further, the guide block is clamped with the lower trimming insert.

The scratch-resistant device for the hot trimming die has the advantages that in order to solve the problem that the trimming cutter block scrapes materials in the forming process, the on-site process optimization and modification are assisted, the outer side of the lower trimming cutter block is provided with a circular convex hull, so that the process forming and trimming are convenient, and meanwhile, scratches on parts are avoided;

The scratch-resistant device designed by the application can prevent the lower trimming insert from scraping materials during the production of the hot-cutting die, has the advantages of simple structure, convenient assembly and disassembly, low cost and the like, and is convenient for on-site process debugging and correction.

Drawings

Fig. 1 is a schematic diagram of a working structure of a lower die insert, an upper die insert and a scratch-proof device for a hot trimming die, which are matched with a forging piece.

Fig. 2 is a schematic structural diagram of the upper die holder and the lower die holder of the scratch-proof device for the hot trimming die.

Fig. 3 is a schematic structural view of an upper die holder of the scratch-proof device for a hot trimming die.

Fig. 4 is a schematic structural view of a lower die holder of the scratch-proof device for a hot trimming die according to the present invention

Fig. 5 is a schematic diagram of a lower die holder of the scratch-proof device for a hot trimming die.

Fig. 6 is a schematic perspective view of a scratch-preventing device for a hot trimming die according to the present invention.

Fig. 7 is a schematic structural view of a guide block of the scratch-preventing device for a hot trimming die.

Fig. 8 is a cross-sectional view of the lower die holder, the upper die holder, and the scratch-preventing device for the hot trimming die, which are matched with the forging piece.

The figure shows that 1, an upper die insert; 2, an upper trimming insert, 3, a lower die insert, 4, a lower trimming insert, 5, a forge piece, 6, a scratch-proof device, 601, a guide block, 602, a groove, 603, a screw, 604 and a gasket.

Detailed Description

In order to better understand the objects, structures and functions of the present invention, a scratch-preventing device for a hot trimming die according to the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 8, the scratch-resistant device for the hot trimming die comprises an upper die insert 1, an upper trimming insert 2, a lower die insert 3 and a lower trimming insert 4, wherein the upper trimming insert 2 is fixedly arranged on the bottom surface of the upper die insert 1, the lower trimming insert 4 is fixedly arranged on the lower die insert 3, and the inner edge of the lower trimming insert 4 is matched with the outer edge of the upper trimming insert 2 to jointly cut a forging 5;

the side that is close to lower side cut insert 3 of lower mould insert 4 is provided with multiunit scratch prevention device 6, multiunit scratch prevention device 6 all set up the outside of the blade of lower side cut insert 4.

In this embodiment, the anti-scratch device 6 includes a guide block 601, and the height of the guide block 601 is equal to or greater than the height of the cutting edge of the lower trimming insert 4.

In this embodiment, the anti-scratch device 6 further includes a screw 603 and a washer 604, the bottom end of the guide block 601 is connected with the lower trimming insert 4, a groove 602 is disposed on one side of the top end, a washer 604 is disposed in the groove 602, a screw 603 is disposed in the washer 604, and the screw 603 penetrates through the washer 604 and is fixedly connected with the lower trimming insert.

In this embodiment, the guide block 601 is cylindrical.

In this embodiment, the guide block 601 is engaged with the lower trimming insert 4.

Working principle:

When the die is in operation, under the action of the press, the upper trimming insert 2 is contacted with the forging piece 5, the lower trimming insert 4 is used for trimming, and when the sliding block descends to the bottom dead point, the trimming is completed, so that the purposes of trimming and forming are achieved once. When the slide block moves downwards, the lower trimming insert 4 is easy to contact with the part, so that the part is scratched;

when the upper die is stamped downwards, the forging piece 5 enters the cutting edge of the upper trimming insert 2 through the cylindrical guide block 601, and the contact with the sharp corner on the outer side of the lower trimming insert 4 is avoided.

As shown in the following figure, the cylindrical guide block 601 is locked on the lower trimming insert 4 through the screw 603 and the gasket 604, the top end height of the cylindrical guide block 601 after being locked is equal to or greater than the cutting edge height of the lower trimming insert 4, when the upper die is stamped downwards, the forging 5 enters the cutting edge of the upper trimming insert 2 through the cylindrical guide block 601, and the contact with the sharp corner outside the lower trimming insert 4 is avoided.

It will be understood that the application has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the application. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the essential scope thereof. Therefore, it is intended that the application not be limited to the particular embodiment disclosed, but that the application will include all embodiments falling within the scope of the appended claims.

Claims

1. A scratch prevention device for a hot trimming die, characterized in that it comprises an upper die insert (1), an upper trimming insert (2), a lower die insert (3) and a lower trimming insert (4), wherein the upper trimming insert (2) is fixedly arranged on the bottom surface of the upper die insert (1), and the lower trimming insert (4) is fixedly arranged on the lower die insert (3), and the inner edge of the lower trimming insert (4) cooperates with the outer edge of the upper trimming insert (2) to cut the forging (5) together;

A plurality of groups of anti-scratch devices (6) are arranged on one side of the lower trimming insert (4) close to the lower mold insert (3), and the plurality of groups of anti-scratch devices (6) are all arranged on the outer side of the cutting edge of the lower trimming insert (4);

The anti-scratch device (6) comprises a guide block (601), the height of the guide block (601) is greater than or equal to the height of the cutting edge of the lower trimming insert (4), the guide block (601) is cylindrical, and the guide block (601) is clamped with the lower trimming insert (4);

The anti-scratch device (6) further comprises a screw (603) and a washer (604); the bottom end of the guide block (601) is connected to the lower cutting insert (4); a groove (602) is arranged on one side of the top end; a washer (604) is arranged in the groove (602); a screw (603) is arranged in the washer (604); the screw (603) passes through the washer (604) and is fixedly connected to the lower cutting insert.