CN214719814U

CN214719814U - Stamping die with cut membrane function

Info

Publication number: CN214719814U
Application number: CN202023168573.5U
Authority: CN
Inventors: 庞胜; 熊辉; 庞经纬; 顾益丰; 李涛; 陈敏
Original assignee: Jiangsu Yidu Intelligent Special Equipment Co ltd
Current assignee: Jiangsu Yidu Intelligent Special Equipment Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-11-16
Anticipated expiration: 2030-12-24

Abstract

The utility model discloses a punching die that has of punch a hole in-process can correspond the die-cut separation of protection film of regional border with this hole simultaneously and cut the membrane function, its structure includes: the film cutting device comprises an upper die and a lower die, wherein a punching needle is arranged on the upper die, a lower die hole matched with the punching needle is formed in the lower die, the lower die hole penetrates through the lower die, and an annular film cutting blade is arranged on the upper die around the punching needle. The stamping die with the film cutting function is particularly suitable for products which are directly used as appearance surfaces of galvanized sheets and the like without surface treatment.

Description

Stamping die with cut membrane function

Technical Field

The utility model relates to a stamping die, concretely relates to punching die that has of membrane function can be cut to punching a hole in-process.

Background

As is well known, the surface of a sheet metal product is inevitably scratched in the stamping process, so surface treatment such as spraying and the like can be generally carried out at the later stage, and the defects such as general scratches and the like can be covered after spraying. However, for high-end network case products, galvanized plates are generally adopted to be directly punched and molded, and a surface zinc layer is directly used as an appearance surface without surface treatment such as spraying. Therefore, the surface of the galvanized sheet is always subjected to film pasting before stamping, and the film pasting can effectively prevent the scratch problem in the processing process. However, when the parts include the press riveting process, the protective film needs to be entirely torn off before the process, otherwise, the protective film is pressed into the press riveting piece, and the press riveting fastness and the appearance effect are affected. The protective film can only be torn off integrally when torn off, and because the manual film tearing operation cannot be carried out on the position needing to be torn off, obvious indentation can be left on the surface of the plate in the subsequent punching process after the protective film is locally wrinkled. If the film is integrally torn, the surface of the product cannot be protected by the subsequent process.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the punching die with the film cutting function is provided, and the protective film on the periphery of the corresponding area of the hole can be simultaneously punched and separated in the punching process.

For solving the technical problem, the utility model discloses the technical scheme who adopts does: a stamping die with a film cutting function comprises: the film cutting device comprises an upper die and a lower die, wherein a punching needle mounting hole which is communicated up and down is arranged in the upper die, a punching needle is movably arranged in the punching needle mounting hole in a penetrating mode, a lower die hole matched with the punching needle is arranged in the lower die in a penetrating mode, the lower die hole penetrates through the lower die, and annular film cutting blades are arranged on the periphery of the punching needle on the bottom surface of the upper die.

In a preferred embodiment, in the stamping die with a film cutting function, the annular film cutting blade is provided on the upper die through an insert for film cutting, and the specific arrangement is as follows: the upper die is provided with an insert mounting cavity matched with the insert for film cutting, the insert for film cutting is fixed in the insert mounting cavity, the insert for film cutting is provided with a punching pin through hole matched with the punching pin, the annular film cutting blade is arranged around the punching pin through hole, and the punching pin is movably arranged in the punching pin through hole in a penetrating mode.

In a preferred embodiment, in the press die with a die cutting function, the die cutting insert is fixed to the upper die in a manner that: the film cutting insert is internally provided with a fixed mounting through hole, the bottom wall of the insert mounting cavity of the upper die is provided with a fastening threaded hole corresponding to the fixed mounting through hole, and a fastening screw penetrates through the fixed mounting through hole in the film cutting insert and is screwed in the fastening threaded hole in the bottom wall of the insert mounting cavity.

Preferably, in the punching die with a film cutting function, a center line of the punching needle and a center line of the annular film cutting edge coincide with each other.

Preferably, in the stamping die with the film cutting function, the cross section of the annular film cutting edge is triangular, and a cutting edge of the annular film cutting edge is formed at the vertex angle of the triangle.

Preferably, in the stamping die with the film cutting function, the cross section of the annular film cutting edge is an isosceles triangle.

The utility model has the advantages that: stamping die with cut membrane function can correspond regional die-cut separation of border with this pore pair simultaneously at the in-process that punches a hole, realized punching a hole, cut membrane one shot forming to production efficiency has been improved greatly. Furthermore, the utility model discloses cutting the membrane sword with the annular and setting up on the mold insert for the membrane, when the membrane sword need be changed because of wearing and tearing are cut to the annular, only need change cut membrane with the mold insert can, and need not change whole last mould, so just greatly reduced manufacturing cost.

Drawings

Fig. 1 is a schematic view of the structural state of the stamping die before stamping.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Fig. 3 is an enlarged schematic view of a portion B of fig. 1.

Fig. 4 is a schematic view of the structure state of the stamping die after stamping.

Fig. 5 is an enlarged schematic view of a portion C of fig. 4.

Fig. 6 is a schematic structural view before clinching.

Fig. 7 is a schematic structural view after clinching.

The reference numerals in fig. 1 to 7 are respectively: 1. the die comprises an upper die, 101, an annular film cutting blade, 102, an insert for film cutting, 103, a punching needle, 104, a fastening screw, 2, a lower die, 203, a lower die hole, 3, a galvanized sheet with a film, 31, a galvanized sheet, 310, a riveting through hole, 311, circular galvanized sheet waste, 32, a protective film, 321, circular film waste, 322, annular film waste, 4, a DSO (digital subscriber optical) spline riveting pad column, 401 and a riveting step.

Detailed Description

The following describes in detail a specific embodiment of a stamping die with a film cutting function according to the present invention with reference to fig. 1 to 7.

As shown in FIG. 1, a stamping die with cut membrane function, include: the film forming die comprises an upper die 1 and a lower die 2, wherein a punching needle 103 is movably arranged in the upper die 1 (the installation structure of the punching needle 103 and the upper die 1 belongs to the conventional technology in the field, and the description is not expanded here), a lower die hole 203 matched with the punching needle 103 is formed in the lower die 2, an annular film cutting blade 101 is arranged on the bottom surface of the upper die 1 on the periphery of the punching needle 103, and the specific arrangement mode of the annular film cutting blade 101 is as follows: an insert mounting cavity is formed in the bottom surface of the upper die 1, an insert 102 for film cutting is arranged in the insert mounting cavity, a punching pin through hole matched with the punching pin 103 is formed in the insert 102 for film cutting, the annular film cutting blade 101 is arranged around the punching pin through hole, the center line of the punching pin 103 is overlapped with the center line of the annular film cutting blade 101, as shown in fig. 2, the cross section of the annular film cutting blade 101 is an isosceles triangle, and the vertex angle of the isosceles triangle forms a cutting edge of the annular film cutting blade; the punching needle 103 is movably arranged in the punching needle through hole of the film cutting insert 102 in a penetrating way; the specific fixing mode of the insert 102 for film cutting and the upper die 1 is as follows: a fixed mounting through hole is formed in the insert 102 for film cutting, a locking threaded hole matched with the fixed mounting through hole in the insert 102 for film cutting is formed in the bottom wall of the insert mounting cavity of the upper die 1, and a fastening screw 104 penetrates through the fixed mounting through hole in the insert 102 for film cutting and is screwed in the locking threaded hole of the upper die 1.

During punching, the upper die 1 and the lower die 2 are opened, the galvanized sheet 31 adhered with the protective film 32, namely the galvanized sheet 3 with the film, is placed between the upper die 1 and the lower die 2 and is horizontally placed on the lower die 2, the upper die 1 descends to be matched with the lower die 2 to clamp the galvanized sheet 3 with the film, meanwhile, the annular film cutting blade 101 on the upper die 1 punches and separates the protective film 32 on the periphery of the area to be punched by the punching pin 103, then the punching pin 103 descends to punch the galvanized sheet 3 with the film, as shown in fig. 4 and 5, after punching, the circular galvanized sheet waste 311 and the circular film waste 321 corresponding to the riveting through hole 310 fall into the lower die hole 203, and the protective film 32 leaves the cut annular film waste 322 at the edge of the riveting through hole 310.

Before the press riveting, the annular film waste 322 is removed, then, as shown in fig. 5, the DSO spline press riveting pad post 4 is placed in the riveting through hole 310 of the galvanized sheet with film 3, and after the press riveting, the press riveting step 401 of the DSO spline press riveting pad post 4 is placed on the annular exposed surface (the surface of the galvanized sheet 31 exposed by removing the annular film waste 322) of the galvanized sheet with film 3, so that the DSO spline press riveting pad post is not affected by the protective film 32.

In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the shapes, structures, features and spirit of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A stamping die with a film cutting function comprises: upper and lower mould, last mould in seted up about having link up towards the needle mounting hole, the activity is worn to be equipped with towards the needle in towards the needle mounting hole, the lower mould in seted up with towards needle matched with lower nib, its characterized in that: the lower die hole penetrates through the lower die, and the bottom surface of the upper die is provided with an annular film cutting blade on the periphery of the punching needle.

2. The punching die with the film cutting function according to claim 1, wherein: the annular film cutting blade is arranged on the upper die through the film cutting insert, and the specific arrangement mode is as follows: the mould comprises an upper mould and a lower mould, wherein the upper mould is provided with an insert mounting cavity matched with an insert for film cutting, the insert for film cutting is fixed in the insert mounting cavity, the insert for film cutting is provided with a punching needle through hole matched with the punching needle, the annular film cutting blade is arranged around the punching needle through hole, and the punching needle is movably arranged in the punching needle through hole in a penetrating manner.

3. The punching die with the film cutting function according to claim 2, wherein: the fixing mode of the insert for cutting the film and the upper die is as follows: the film cutting insert is internally provided with a fixed mounting through hole, the bottom wall of the insert mounting cavity of the upper die is provided with a fastening threaded hole corresponding to the fixed mounting through hole, and a fastening screw penetrates through the fixed mounting through hole in the film cutting insert and is screwed in the fastening threaded hole in the bottom wall of the insert mounting cavity.

4. The punching die with the film cutting function according to claim 1, wherein: the central line of the punching needle and the central line of the annular film cutting edge are overlapped.

5. The punching die with a film cutting function according to any one of claims 1 to 4, wherein: the cross section of the annular film cutting edge is triangular, and the vertex angle of the triangle forms a cutting edge of the annular film cutting edge.

6. The punching die with the film cutting function according to claim 5, wherein: the cross section of the annular film cutting edge is an isosceles triangle.