Blanking needle for pneumatic stamping material

Abstract

The punching needle comprises a punching needle body, a mounting hole is formed in the top of the punching needle body, and a punching blade is arranged at the bottom of the punching needle body; an air channel, an air storage cavity and air holes are formed in the punching needle body from top to bottom in a communicating and penetrating mode, and the air holes are distributed in the bottom of the punching needle body. The air channel supplies air to the air hole through the air storage cavity, and air stamping is achieved through air injection of the air hole. According to the pneumatic punching device, pneumatic punching is carried out in the upward moving and resetting process of the punching needle, material sheets are prevented from being taken up under the joint action of the punching blade, and the punching machining quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of punching and cutting needles, in particular to a punching and cutting needle for air punching materials. Background Art

[0002] The required shape of the sheet can be obtained by punching the material with a punching needle. The punching blade of the punching needle is generally an enclosed structure, which can easily lift the sheet during the upward reset process, causing the sheet to bend or difficult to cut, affecting the quality of the punching process. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a punching needle for air punching materials, which performs air punching of materials during the upward resetting process to avoid the associated effect of the punching blade to lift up the material sheet, thereby improving the punching process quality.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a punching needle for air punching materials, comprising a punching needle body, the top of the punching needle body having a mounting hole, and the bottom having a punching blade; an airway, an air storage cavity and air holes are connected and penetrated from top to bottom in the punching needle body, and the air holes are distributed at the bottom of the punching needle body; the airway supplies air to the air holes through the air storage cavity, and air is ejected through the air holes to realize air punching of materials.

[0005] Furthermore, the straight-through channel structure of the air hole has an air jet direction vertically downward toward the sheet on the punching die.

[0006] Furthermore, there are a plurality of pores, and the pores are all distributed within the contour range enclosed by the punching blade.

[0007] Furthermore, the mounting holes are threaded blind holes evenly distributed around the air holes.

[0008] Furthermore, it comprises a piston which is arranged in the airway and slides upward and downward, the piston is connected with a piston rod which extends to the outside of the airway, and the piston is connected with a push-pull driving part through the piston rod.

[0009] Furthermore, the air duct is equipped with an air supply source, and the air duct is connected to the air supply pipeline of the air supply source through a threaded pipe interface located at the air inlet.

[0010] Furthermore, an air valve is installed between the threaded pipe interface and the air supply pipeline.

[0011] Beneficial effects: In the present utility model, during the upward reset process of the blanking punch pin, air pressure blanking is performed. The gas ejected from the air holes impacts on the workpiece sheet, forming a downward air pressure thrust on the workpiece sheet. The air pressure thrust is greater than the frictional force between the workpiece sheet and the blanking edge, enabling the workpiece sheet to fall during the upward reset process of the punch pin after blanking, avoiding the workpiece sheet being lifted by the associated action of the blanking edge. This not only improves the quality of blanking processing but also ensures the normal blanking of the workpiece sheet. Description of the Drawings

[0012] Attached Figure 1 is the overall structural schematic diagram of the blanking punch pin of the present utility model;

[0013] Attached Figure 2 is the semi-sectional structural schematic diagram of the blanking punch pin of the present utility model;

[0014] Attached Figure 3 is the first structural embodiment of the air supply component for supplying air to the blanking punch pin of the present utility model;

[0015] Attached Figure 4 is the second structural embodiment of the air supply component for supplying air to the blanking punch pin of the present utility model. Detailed Embodiment

[0016] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] As shown in Attached Figure 1 and Attached Figure 2 A blanking punch pin for air pressure blanking includes a punch pin body 1. The top of the punch pin body 1 has a mounting hole 2, and the bottom has a blanking edge 3. A gas passage 4, a gas storage cavity 5, and air holes 6 are continuously and vertically formed through the punch pin body 1 from top to bottom. The air holes 6 are distributed at the bottom of the punch pin body 1. The gas passage 4 supplies gas to the air holes 6 through the gas storage cavity 5, and air pressure blanking is achieved by ejecting gas through the air holes 6. In the present utility model, during the upward reset process of the blanking punch pin, air pressure blanking is performed. The gas ejected from the air holes 6 impacts on the workpiece sheet, forming a downward air pressure thrust on the workpiece sheet. The air pressure thrust is greater than the frictional force between the workpiece sheet and the blanking edge 3, enabling the workpiece sheet to fall during the upward reset process of the punch pin after blanking, avoiding the workpiece sheet being lifted by the associated action of the blanking edge 3. This not only improves the quality of blanking processing but also ensures the normal blanking of the workpiece sheet.

[0018] It should be noted that, as shown in Attached Figure 2 The straight through-hole structure of the air holes 6 has its jetting direction vertically downward towards the workpiece sheet on the blanking die, thereby forming a vertically downward air pressure on the workpiece sheet. The air pressure thrust is vertically downward, enabling the workpiece sheet to be separated from the blanking edge 3 faster and more easily without jamming.

[0019] More specifically, as shown in Attached Figure 2As shown, the number of the air holes 6 is several, and several air holes 6 are all distributed within the contour range enclosed by the blanking edge 3, so as to improve the uniformity of the air impact on the sheet material and prevent the sheet material from tilting due to uneven air impact thrust.

[0020] The mounting holes 2 are threaded blind holes evenly distributed around the air holes 6, and cooperate with bolts to mount the punch body 1 on the upper die structure of the blanking die.

[0021] As shown in the attached Figure 3 and the attached Figure 4 As shown, for the blanking punch adapted to the present utility model, the required air supply components have the following two embodiments:

[0022] Embodiment 1: As shown in the attached Figure 3 As shown, the present utility model includes a piston 7 that slides up and down in the air passage 4, the piston 7 is connected with a piston rod 8 extending outside the air passage 4, the piston 7 is connected with a push-pull driving part 9 through the piston rod 8, and the push-pull driving part 9 is preferably a cylinder.

[0023] Embodiment 2: The air passage 4 is provided with an air supply source 10 in a supporting manner, and the air passage 4 is docked with the air supply pipeline 10a of the air supply source 10 through a threaded pipe interface 11 located at the air inlet. An air valve 12 is installed between the threaded pipe interface 11 and the air supply pipeline 10a. The air supply source 10 is an air supply device or a gas storage tank with corresponding pressure. When an air impact action is required, the air valve 12 is opened, and when no air impact action is required, the air valve 12 is closed. The air valve 12 is preferably an electromagnetic valve.

[0024] The above is only the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A blanking punch with gas stamping material, comprising a punch body (1), the top of the punch body (1) is provided with a mounting hole (2), and the bottom is provided with a blanking edge (3); characterized in that: An air passage (4), an air storage cavity (5) and air holes (6) are communicated and penetrated through the punch body (1) from top to bottom, and the air holes (6) are distributed at the bottom of the punch body (1); the air passage (4) supplies air to the air holes (6) through the air storage cavity (5), and air pressure blanking is realized by jetting air through the air holes (6).

2. The blanking punch with air stamping according to claim 1, characterized in that: The straight through hole structure of the air hole (6) has a jetting direction vertically downward towards the sheet on the blanking die.

3. The blanking punch with air stamping material according to claim 1 or 2, characterized in that: The number of the air holes (6) is several, and several air holes (6) are all distributed within the contour enclosed by the blanking edge (3).

4. The blanking punch with air pressure feeding according to claim 1, wherein: The mounting holes (2) are threaded blind holes uniformly distributed around the air holes (6).

5. A blanking punch with air pressure material feeding according to claim 1, characterized in that: It includes a piston (7) slid up and down in the air passage (4), the piston (7) is connected with a piston rod (8) extending outside the air passage (4), and the piston (7) is connected with a push-pull driving part (9) through the piston rod (8).

6. The blanking punch with air pressure feeding according to claim 1, wherein: An air supply source (10) is arranged in a supporting manner for the air passage (4), and the air passage (4) is docked with the air supply pipeline (10a) of the air supply source (10) through a threaded pipe interface (11) located at the air inlet.

7. The blanking punch with air stamping according to claim 6, characterized in that: A pneumatic valve (12) is installed between the threaded pipe interface (11) and the air supply pipeline (10a).

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