A die for punching a metal sheet

Abstract

The utility model discloses a kind of punching die of sheet metal, including drive unit, the connecting end of drive unit is connected with pressing plate, the clamping plate of pressing plate lower is provided with, the ejector pin of detachable is provided in the pressing plate with the clamping plate, the one end of ejector pin is connected with pressing plate, the other end is provided with compression assembly, the periphery of pressing plate is provided with guide pillar, the other end of guide pillar is connected with mould seat, mould seat is transversely distributed and is provided with material tape, by drive unit work, make pressing plate push ejector pin to material tape and carry out punching, when drive unit drive pushes ejector pin and carries out punching, after compression sleeve and material tape in material groove abut, the connecting end of ejector pin extrudes elastic connecting piece, make the working end of ejector pin pass through the hole of compression sleeve bottom, material tape is punched, after punching is completed, drive unit resets, pulls ejector pin, elastic connecting piece backtracks, make the working end of ejector pin rebound to compression sleeve, it is also effectively protected ejector pin simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of metal processing technology, specifically a punching die for metal sheets. Background Technology

[0002] Metal adapter sheets are all manufactured using a punching process. Punching dies typically include a male die and a female die, which work together to punch the metal adapter sheet away from the strip. In existing metal adapter sheet punching dies, the punch or ejector pin is not easily detached from the strip. Therefore, this paper proposes a new type of metal sheet punching die. Utility Model Content

[0003] Technical problems to be solved

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a punching die for metal sheets.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a metal sheet punching die, including a driving unit, a pressure plate connected to the connecting end of the driving unit, a clamping plate provided under the pressure plate, a detachable ejector pin provided in the pressure plate and the clamping plate, one end of the ejector pin being connected to the pressure plate, and a pressing assembly provided at the other end, guide pillars provided around the pressure plate, the other end of the guide pillars being connected to a die base, and a strip of material being arranged laterally on the die base, wherein the driving unit operates to cause the pressure plate to push the ejector pin toward the strip of material for punching.

[0007] Furthermore, the ejector pin includes a connecting end connected to the pressure plate and a working end for punching the strip. The top of the connecting end is installed in the pressure plate, and the outer diameter of the connecting end is larger than the outer diameter of the working end.

[0008] Furthermore, the pressing assembly includes a pressing sleeve covering the working end and an elastic structural member installed between the pressing sleeve and the working end, wherein the pressing sleeve is fitted with the connecting end.

[0009] Furthermore, the bottom of the pressing sleeve is provided with a hole through which the working end can pass. When the connecting end presses the elastic structural member, the working end passes through the hole and protrudes out of the pressing sleeve.

[0010] Furthermore, the mold base is provided with horizontally distributed material grooves, the material strip is installed in the material grooves, and pressure strips are also provided on both sides of the material grooves.

[0011] Furthermore, brackets for supporting the drive unit are provided on both sides of the pressure strip. The drive unit is installed on the top of the brackets, and the bottom of the brackets is fixed on the mold base.

[0012] Furthermore, mold frames for supporting the mold base are provided at both ends of the bottom of the mold base.

[0013] Beneficial effects: Compared with existing technologies, this metal sheet punching die has the following advantages: When the ejector pin is driven by the drive unit to punch, after the pressing sleeve comes into contact with the material strip in the trough, the connecting end of the ejector pin squeezes the elastic connector, so that the working end of the ejector pin passes through the hole at the bottom of the pressing sleeve to punch the material strip. After punching is completed, the drive unit resets and pulls the ejector pin. The elastic connector retracts, so that the working end of the ejector pin springs back into the pressing sleeve, which also effectively protects the ejector pin. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a right-side view of the overall structure of this utility model; Figure 3 for Figure 2 Schematic diagram of the overall cross-sectional structure of AA; Figure 4 for Figure 3 A magnified view of part A in the diagram; Figure 5 This is a schematic diagram of the ejector pin structure of this utility model; Figure 6 This is a cross-sectional structural diagram of the assembly of the ejector pin and the pressing component of this utility model. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 As shown, this utility model provides a technical solution: a punching die for a metal sheet, including a drive unit 1, a pressure plate 2 connected to the connecting end of the drive unit 1, a clamping plate 21 provided under the pressure plate 2, a detachable ejector pin 3 provided in the pressure plate 2 and the clamping plate 21, one end of the ejector pin 3 being connected to the pressure plate 2, and the other end being provided with a pressing assembly 4, guide pillars 5 being provided around the pressure plate 2, the other end of the guide pillars 5 being connected to a die base 6, and a strip of material being arranged laterally on the die base 6. By working through the drive unit 1, the pressure plate 2 pushes the ejector pin towards the strip of material for punching.

[0017] Please see Figures 2 to 6As shown in this example: the ejector pin 3 includes a connecting end 31 connected to the pressure plate 2 and a working end 32 for punching the strip. The top of the connecting end 31 is installed in the pressure plate 2, and the outer diameter of the connecting end 31 is larger than the outer diameter of the working end 32. The pressing assembly 4 includes a pressing sleeve 41 covering the working end 32 and an elastic structural member 42 installed between the pressing sleeve 41 and the working end 32. The pressing sleeve 41 fits onto the connecting end 31. The bottom of the pressing sleeve 41 has a hole 410 for the working end 32 to pass through. When the connecting end 31 presses the elastic structural member 42, the working end 32 protrudes out of the pressing sleeve 41 through the hole 410. An elastic connector 42 is placed, and a pressing sleeve 41 is fitted over the elastic connector 42. The elastic connector 42 is a spring, one end of which is fixedly connected to the bottom of the pressing sleeve. Since the outer diameter of the connecting end 31 of the ejector pin 3 is larger than the outer diameter of the working end 32, a step is formed between the connecting end 31 and the working end 32. The other end of the spring is fixedly connected to the step. When the bottom of the pressing sleeve 41 abuts against the material strip, the step squeezes the spring, which allows the working end 32 of the ejector pin 3 to pass through the hole 410 of the pressing sleeve 41, and then punches the material in the material strip. Conversely, when the drive unit 6 is reset, the ejector pin 3 is pulled back to its original position, the spring rebounds, and the pressing sleeve 41 covers the working end 32 of the ejector pin 3.

[0018] Furthermore, the mold base 6 is provided with a horizontally distributed material groove 61, and the material strip is installed in the material groove 61. Pressure strips 62 are also provided on both sides of the material groove 61. The pressure strips 62 are installed on both sides of the material groove 61. By extending the edge of the pressure strips 62 into the material groove 61, the material strip located in the material groove 61 can be pressed together.

[0019] Furthermore, the outer sides of the pressure strip 62 are provided with brackets 11 for supporting the drive unit 1. The drive unit 1 is installed on the top of the bracket 11 and the bottom of the bracket 11 is fixed on the mold base 6. The drive unit 1 is a cylinder.

[0020] Furthermore, mold frames 63 for supporting the mold base 6 are provided at both ends of the bottom of the mold base 6.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A punching die for a metal sheet, comprising a drive unit (1), characterized in that: The drive unit (1) is connected to a pressure plate (2) at its connecting end. A clamping plate (21) is provided under the pressure plate (2). A detachable ejector pin (3) is provided in the pressure plate (2) and the clamping plate (21). One end of the ejector pin (3) is connected to the pressure plate (2), and the other end is provided with a pressing assembly (4). Guide posts (5) are provided around the pressure plate (2). The other end of the guide posts (5) is connected to a mold base (6). A material strip is arranged horizontally on the mold base (6). The drive unit (1) works to make the pressure plate (2) push the ejector pin towards the material strip for punching.

2. The metal sheet punching die according to claim 1, characterized in that: The ejector pin (3) includes a connecting end (31) connected to the pressure plate (2) and a working end (32) for punching the strip. The top of the connecting end (31) is installed in the pressure plate (2), and the outer diameter of the connecting end (31) is larger than the outer diameter of the working end (32).

3. The metal sheet punching die according to claim 2, characterized in that: The pressing assembly (4) includes a pressing sleeve (41) covering the working end (32) and an elastic structural member (42) installed between the pressing sleeve (41) and the working end (32), wherein the pressing sleeve (41) is fitted with the connecting end (31).

4. The metal sheet punching die according to claim 3, characterized in that: The bottom of the compression sleeve (41) is provided with a hole (410) through which the working end (32) can pass. When the connecting end (31) squeezes the elastic structural member (42), the working end (32) passes through the hole (410) and protrudes out of the compression sleeve (41).

5. A metal sheet punching die according to claim 1, characterized in that: The mold base (6) is provided with a horizontally distributed material groove (61), and the material strip is installed in the material groove (61). Pressure strips (62) are also provided on both sides of the material groove (61).

6. A metal sheet punching die according to claim 5, characterized in that: The outer sides of the pressure strip (62) are provided with brackets (11) for supporting the drive unit (1). The drive unit (1) is installed on the top of the bracket (11), and the bottom of the bracket (11) is fixed on the mold base (6).

7. A metal sheet punching die according to claim 6, characterized in that: The bottom of the mold base (6) is provided with mold frames (63) at both ends for supporting the mold base (6).

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