Anti-scratch device for hot trimming die

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

Technical Field

[0001] The invention belongs to the field of plastic forming, and in particular relates to a hot trimming die for forgings. Background Art

[0002] The hot forming trimming die is different from the cold stamping die in the stamping production process. When the upper die moves downward, the part is trimmed during the forming process, which makes it easy for the lower trimming insert to scrape the part and produce scratches. Summary of the invention

[0003] The purpose of the present invention is to provide an anti-scratch device for a hot trimming mold to solve the technical problem that when a part is trimmed during the molding process, the lower trimming insert is easy to scratch the part and cause scratches.

[0004] To achieve the above purpose, the specific technical solution of the anti-scratch device for hot trimming mold of the present invention is as follows:

[0005] A scratch prevention device for a hot trimming die, characterized in that 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, and the inner edge of the lower trimming insert cooperates with the outer edge of the upper trimming insert to cut the forging together;

[0006] 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 arranged on the outer side of the cutting edge of the lower trimming insert.

[0007] Furthermore, the anti-scratch device comprises a guide block, the height of which is greater than or equal to the height of the cutting edge of the lower trimming insert.

[0008] Furthermore, the anti-scratch device also includes screws and washers. The bottom end of the guide block is connected to the lower cutting insert. A groove is set on one side of the top. A washer is set in the groove. A screw is set in the washer. The screw passes through the washer and is fixedly connected to the lower cutting insert.

[0009] Furthermore, the material guide block is cylindrical.

[0010] Furthermore, the material guide block is clamped with the lower trimming insert.

[0011] The anti-scratch device for a hot trimming die of the present invention has the following advantages: in order to solve the problem of the trimming knife block scraping the material during the molding process and assist in on-site process optimization and rectification, a circular convex hull is designed on the outer side of the lower trimming knife block, which facilitates process molding and trimming while also avoiding scratches on the parts;

[0012] The anti-scratch device designed in the present application prevents the lower cutting edge insert from scratching the material during hot cutting mold production, and has the advantages of simple structure, convenient loading and unloading, low cost, etc., and is convenient for on-site process debugging and rectification. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a schematic diagram of the working structure of the lower die insert, the upper die insert, the anti-scratch device and the forging in the anti-scratch device for the hot trimming die.

[0014] Figure 2 The present invention is a schematic structural diagram of the cooperation between an upper die base and a lower die base of a scratch prevention device for a hot trimming die.

[0015] Figure 3 The present invention is a schematic structural diagram of an upper die seat of an anti-scratch device for a hot trimming die.

[0016] Figure 4 The structure diagram of the lower die seat of the anti-scratch device for the hot trimming die of the present invention is shown in FIG. Figure 1

[0017] Figure 5 The structure diagram of the lower die seat of the anti-scratch device for the hot trimming die of the present invention is shown in FIG. Figure 2 .

[0018] Figure 6 It is a schematic diagram of the three-dimensional structure of an anti-scratch device for a hot trimming mold of the present invention.

[0019] Figure 7 The present invention is a schematic structural diagram of a material guide block of an anti-scratch device for a hot trimming die.

[0020] Figure 8 The present invention is a cross-sectional view of the cooperation between the lower die base, the upper die base, the anti-scratch device and the forging of an anti-scratch device for a hot trimming die of the present invention.

[0021] Explanation of the markings in the figure: 1. upper die insert; 2. upper trimming insert; 3. lower die insert; 4. lower trimming insert; 5. forging; 6. anti-scratch device; 601. guide block; 602. groove; 603. screw; 604. washer. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of an anti-scratch device for a hot trimming mold of the present invention in conjunction with the accompanying drawings.

[0023] like Figure 1-Figure 8As shown, the present invention is an anti-scratch device for a hot trimming die, comprising 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;

[0024] A plurality of groups of anti-scratch devices 6 are arranged on one side of the lower trimming insert 4 close to the lower die insert 3 , and the plurality of groups of anti-scratch devices 6 are arranged on the outer side of the cutting edge of the lower trimming insert 4 .

[0025] In this embodiment, the anti-scratch device 6 comprises a guide block 601 , and 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 .

[0026] In this embodiment, the anti-scratch device 6 also includes a screw 603 and a washer 604. The bottom end of the guide block 601 is connected to the lower cutting insert 4, and a groove 602 is set on the top side. A washer 604 is set in the groove 602, and a screw 603 is set in the washer 604. The screw 603 passes through the washer 604 and is fixedly connected to the lower cutting insert.

[0027] In this embodiment, the guide block 601 is cylindrical.

[0028] In this embodiment, the guide block 601 is engaged with the lower trimming insert 4 .

[0029] Working principle:

[0030] During operation, under the action of the press, when the upper trimming insert 2 contacts the forging 5, the lower trimming insert 4 performs trimming; when the slider moves down to the bottom dead center, the trimming is completed; thus, the purpose of trimming and forming is completed at one time. When the slider moves downward, the lower trimming insert 4 is easy to contact the part, resulting in scratches on the part;

[0031] When the upper die is pressed downward, the forging 5 passes through the cylindrical guide block 601 and enters the cutting edge of the upper trimming insert 2, avoiding contact with the outer sharp corner of the lower trimming insert 4.

[0032] As shown in the figure below, the cylindrical guide block 601 is locked on the lower trimming insert 4 by means of screws 603 and washers 604. After the cylindrical guide block 601 is locked, the top height should be ≥ the edge height of the lower trimming insert 4. When the upper die presses downward, the forging 5 passes through the cylindrical guide block 601 and enters the edge of the upper trimming insert 2, avoiding contact with the outer sharp corner of the lower trimming insert 4.

[0033] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A scratch protection device for a hot trimming mold, 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); 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.

Images