Sheet metal die convenient to punch

Abstract

The sheet metal die comprises an upper die, a lower die and a base, the upper die is arranged above the lower die in a sliding connection mode, and the lower portion of the lower die is elastically connected with the base. A plurality of detachable ejector rods are arranged on the base, and through grooves are formed in the positions, corresponding to the ejector rods, of the upper die and the lower die. In the using process of the die, the sheet metal working procedure and the punching working procedure can be combined and completed in one working procedure, the working efficiency is improved, and manpower is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet metal molds, in particular to a sheet metal mold that is convenient for punching holes. Background Art

[0002] Sheet metal dies are typically used to bend thin sheets. Punching holes in thin sheets typically requires the use of drills or punching dies. For sheet metal parts that require punching, the conventional process of bending first and then punching complicates the process and reduces sheet metal processing efficiency. Repeatedly transferring sheet metal parts to different dies for both sheet metal forming and punching increases the risk of damage and requires significant labor. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a sheet metal die that is convenient for punching.

[0004] The technical solution of the utility model is: a sheet metal punching die comprises an upper die, a lower die, and a base. The upper die is provided with a sliding connection above the lower die, and the lower die is elastically connected to the base. The base is provided with multiple detachable ejector pins, and the upper and lower dies are provided with through slots at positions corresponding to the ejector pins.

[0005] Furthermore, a plurality of guide pillars are symmetrically distributed on both sides of the top surface of the lower mold, one end of the guide pillar is fixedly connected to the lower mold, and the other end passes through the upper mold.

[0006] Furthermore, a groove is provided in the length direction of the lower mold, and a protrusion matching the groove is provided in the upper mold.

[0007] Furthermore, the bottom end of the push rod is provided with a threaded end, and the other end is provided with a concave surface matching the groove; the threaded end is screwed into the base, and the concave surface is located in the guide cylinder of the lower mold.

[0008] Furthermore, multiple columns are symmetrically distributed on both sides of the bottom surface of the lower mold, and connecting tubes are provided at the positions of the base corresponding to the columns. The lower ends of the columns pass through the connecting tubes. A spring is provided in the connecting tubes, one end of the spring contacts the column and the other end contacts the base.

[0009] Furthermore, a waste bin is provided on the top of the upper mold, the waste bin is communicated with the through slot and a hinged bin door is provided on the side.

[0010] Furthermore, a slope is provided on the bottom surface of the waste bin, and a lower side of the slope is close to the bin door.

[0011] Furthermore, a boss is provided at a position of the waste bin corresponding to the through groove, the through groove passes through the boss, and the edge of the top surface of the boss is chamfered.

[0012] Compared with existing technologies, the advantages of this utility model lie in the following: The upper and lower dies are used to bend and form sheet metal parts. As the upper and lower dies continue to move downward, the ejector pins punch holes in the bent sheet metal parts. This simplifies the process, improves sheet metal processing efficiency, saves manpower, and increases the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is an overall schematic diagram of the utility model;

[0015] Figure 2 This is a cross-sectional view of the utility model.

[0016] Among them: 1. Base; 2. Lower mold; 3. Upper mold; 4. Through groove; 11. Connecting tube; 12. Push rod; 111. Spring; 121. Threaded end; 122. Concave surface; 21. Column; 22. Groove; 23. Guide cylinder; 31. Bump; 32. Waste bin; 33. Guide column; 321. Slope; 322. Bin door; 323. Boss. DETAILED DESCRIPTION

[0017] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0018] The specific implementation of the present invention will be described below with reference to the accompanying drawings:

[0019] like Figures 1-2 As shown, a sheet metal die convenient for punching includes an upper die 3, a lower die 2 and a base 1. A slidingly connected upper die 3 is provided above the lower die 2. A plurality of guide pillars 33 are symmetrically distributed on both sides of the top surface of the lower die 2. One end of the guide pillar 33 is fixedly connected to the lower die 2, and the other end passes through the upper die 3. A groove 22 is provided in the length direction of the lower die 2, and a protrusion 31 that matches the groove 22 is provided in the upper die 3. The thin plate is placed between the upper die 3 and the lower die 2, and the forming equipment drives the upper die 3 to move along the guide pillar 33. When the protrusion 31 is embedded in the groove 22, the thin plate is bent and formed under the cooperation of the upper die 3 and the lower die 2.

[0020] The lower part of the lower mold 2 is elastically connected to the base 1. A plurality of symmetrically distributed columns 21 are provided on both sides of the bottom surface of the lower mold 2. A connecting tube 11 is provided at the position of the base 1 corresponding to the column 21, and the lower end of the column 21 passes through the connecting tube 11. A spring 111 is provided in the connecting tube 11, and one end of the spring 111 contacts the column 21, and the other end contacts the base 1. A plurality of detachable push rods 12 are provided on the base 1. The bottom end of the push rod 12 is provided with a threaded end 121, and the other end is provided with a concave surface 122 that matches the groove 22. The threaded end 121 is screwed into the base 1, and the concave surface 122 is located in the guide tube 23 of the lower mold 2. A through groove 4 is provided at the position of the upper mold 3 and the lower mold 2 corresponding to the push rod 12. The detachable push rod 12 is easy to replace. When the concave surface 122 contacts the sheet metal and applies pressure, it can fit the surface of the sheet metal and cut a hole. The upper die 3 and lower die 2 continue to move downward with the bent sheet metal part, the spring 111 is compressed, and the ejector pin 12 moves upward along the guide cylinder 23 relative to the lower die 2, passing through the through slot 4 while punching a hole in the sheet metal part. After the hole is punched, the forming equipment drives the upper die 3 upward, the spring 111 rebounds, and the lower die 2 moves upward.

[0021] A waste bin 32 is provided at the top of the upper mold 3. The waste bin 32 is connected to the through groove 4 and has a hinged bin door 322 on the side. The ejector rod 12 pushes the waste into the waste bin 32. The waste bin 32 stores the waste to prevent the waste from splashing and injuring people or damaging the equipment. The bottom surface of the waste bin 32 is provided with a slope 321, and the lower side of the slope 321 is close to the bin door 322. When the bin door 322 is opened, the waste rolls out of the waste bin 32 under the action of the slope 321, making it easy to discharge the material. A boss 323 is provided at the position of the waste bin 32 corresponding to the through groove 4. The through groove 4 passes through the boss 323, and the edge of the top surface of the boss 323 is chamfered. After the waste is pushed out of the boss 323, it is separated from the top surface of the boss 323 due to the action of the chamfer, preventing the waste from falling back into the through groove 4.

[0022] The working principle of the specific embodiment of the utility model is as follows: a thin plate is placed between the upper die 3 and the lower die 2. The upper die 3 is driven by the equipment to move downward until the boss 323 mates with the groove 22. The thin plate is bent into shape under the cooperation of the boss 323 and the groove 22. The upper die 3 and the lower die 2 continue to move downward with the formed sheet metal part, and the ejector rod 12 passes through the through slot 4 to punch a hole in the sheet metal part.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "upper," "lower," "left," "right," "front," "rear," and similar expressions used herein are for illustrative purposes only.

[0024] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A sheet metal punching die, characterized by: The invention comprises an upper die (3), a lower die (2) and a base (1); the upper die (3) is provided with a sliding connection above the lower die (2); the lower die (2) is elastically connected to the base (1); a plurality of detachable ejector rods (12) are provided on the base (1); and through grooves (4) are provided on the upper die (3) and the lower die (2) at positions corresponding to the ejector rods (12).

2. The sheet metal punching die according to claim 1, characterized in that: A plurality of guide pillars (33) are symmetrically distributed on both sides of the top surface of the lower mold (2), one end of the guide pillar (33) is fixedly connected to the lower mold (2), and the other end passes through the upper mold (3).

3. The sheet metal punching die according to claim 1, characterized in that: The lower die (2) is provided with a groove (22) in the length direction, and the upper die (3) is provided with a protrusion (31) that matches the groove (22).

4. The sheet metal punching die according to claim 3, characterized in that: The bottom end of the push rod (12) is provided with a threaded end (121), and the other end is provided with a concave surface (122) that matches the groove (22); the threaded end (121) is screwed into the base (1), and the concave surface (122) is located in the guide cylinder (23) of the lower mold (2).

5. The sheet metal punching die according to claim 1, characterized in that: A plurality of symmetrically distributed columns (21) are provided on both sides of the bottom surface of the lower mold (2); a connecting tube (11) is provided on the base (1) at a position corresponding to the columns (21); the lower end of the column (21) passes through the connecting tube (11); a spring (111) is provided in the connecting tube (11); one end of the spring (111) contacts the column (21), and the other end contacts the base (1).

6. The sheet metal punching die according to claim 1, characterized in that: A waste bin (32) is provided on the top of the upper mold (3), the waste bin (32) is communicated with the through groove (4) and a hinged bin door (322) is provided on the side.

7. The sheet metal punching die according to claim 6, characterized in that: The bottom surface of the waste bin (32) is provided with a slope (321), and the lower side of the slope (321) is close to the bin door (322).

8. The sheet metal punching die according to claim 6, characterized in that: The waste bin (32) is provided with a boss (323) at a position corresponding to the through groove (4), the through groove (4) passes through the boss (323), and the edge of the top surface of the boss (323) is chamfered.

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