CN203197153U - Mechanisms to prevent the rise of workpieces or scrap - Google Patents

Abstract

The utility model relates to the technical field of stamping dies, in particular to a mechanism for preventing a workpiece or waste material from rising; the mechanism comprises a ejector pin and an elastic component connected to the ejector pin, the ejector pin is arranged inside a punch of a die, and under the action of the elastic force of the elastic component, the front end of the ejector pin is exposed from the front end face of the punch; during punching, the punch enters a die from top to bottom to complete the punching, and during punching, the ejector pin compresses the elastic component to always keep it flush with the front end face of the punch, and after the punching is completed, the punch begins to lift upwards driven by a die base, and the punched workpiece or waste material is separated from the punch and enters a die opening under the action of the elastic force of the elastic component connected to the ejector pin; the utility model effectively solves the problem of workpiece or waste material rising during the stamping process, and has a simple and reliable structure.

Description

Mechanisms to prevent the rise of workpieces or scrap

technical field

The utility model relates to the technical field of stamping dies, in particular to a mechanism for preventing workpieces or waste materials from rising.

Background technique

The mold is assembled from various parts. When stamping, the upper mold and the lower mold cooperate to punch out metal parts that meet the requirements.

The reliability of unloading is very important for the mold to work normally. Under normal circumstances, we will use the unloading plate to unload the large contour waste, and the punched small pieces or waste will fall from the die by gravity, but gravity is sometimes unreliable. Especially in the case of high-speed stamping, due to reasons such as high speed and magnetization of the die edge, it may cause the workpiece or scrap to rise from the die mouth. If the rising parts or waste stick on the punch edge plane, it will affect the normal work, and even damage the mold and press in severe cases. Therefore, to avoid this phenomenon, it is necessary to have reliable prevention parts and Scrap rising bodies.

At present, when punching large parts in general, the upper mold can be used to unload the peripheral waste by adding an elastic unloading device, and the intermediate waste can be used by the punching rod in the press, as shown in Figure 1, in order to prevent the waste in the middle Sticking on the punch 1, two punching rods 2 are arranged in the punch 1, but using the punching rods 2 to discharge material makes the mold structure complicated and the cost rises. And the punching rod 2 is only suitable for blanking large parts. When punching small porous parts at high speed, the punching die 1 can't be provided with the punching rod 2 in the small middle, so it is not suitable for using the punching rod 2 to discharge.

Utility model content

The utility model solves the problem that the punching rod cannot be used to prevent the parts or waste from rising when the stamping die is stamping small parts, causing the parts or waste to stick to the plane of the punch edge, affecting the normal operation of the die, and even damaging the die. Provides a mechanism to prevent the rise of workpieces or scrap.

In order to achieve the above functions, the technical solution provided by the utility model is:

A mechanism for preventing workpieces or scraps from rising, comprising a ejector pin and an elastic component connected to the ejector pin, the ejector pin is arranged inside the punch of a mold, and under the action of the elastic force of the elastic component, the The front end of the ejector pin exposes the front face of the punch.

Preferably, the elastic member is a spring.

Preferably, the front end of the ejector pin is spherical.

Preferably, the ejector pin has a diameter of 2-6 mm.

The beneficial effect of the utility model is that: a mechanism for preventing workpieces or waste materials from rising, including a jacking pin and an elastic component connected with the jacking pin, the jacking pin is arranged inside the punch of the mold, in the Under the action of the elastic force of the elastic component, the front end of the ejector pin exposes the front face of the punch; when punching, the punch enters the die from top to bottom to complete punching, and the ejector pin compresses the punch during punching. The elastic part is used to keep the front end of the ejector pin flush with the front end of the punch. After blanking, the punch starts to lift up driven by the die base. Under the action of the elastic force of the elastic part connected with the material pin, it separates from the punch and enters the cavity of the die; the utility model effectively solves the problem that the workpiece or waste rises during the stamping process, and has a simple and reliable structure.

Description of drawings

Fig. 1 is the structural representation of the stamping die that adopts existing punching rod;

Fig. 2 is the structural representation of the utility model;

Fig. 3 is a structural schematic diagram of the utility model during punching.

Detailed ways

Below in conjunction with accompanying drawing 2 and Fig. 3, the utility model is further elaborated:

As shown in Figure 2, the mechanism for preventing workpieces or waste from rising includes a ejector pin 3 and an elastic member 4 connected to the ejector pin 3. Under the action, the front end of the ejector pin 3 exposes the front end face of the punch 1 . In this embodiment, the elastic member 4 adopts a spring with high cost performance and stable performance. Of course, in actual use, we can also use an air cylinder or an elastic rubber sheet according to actual needs.

The front end of the ejector pin 3 exposes the height of the front end of the punch 1 and the diameter of the ejector pin 3, which can be adjusted according to actual processing needs. Generally speaking, the exposed height is 2 to 6 times the thickness of the punched material. The diameter of the pin 3 is preferably 2 to 6 mm.

In this embodiment, in order to make the ejector pin 3 move more smoothly, the front end of the ejector pin 3 adopts a spherical shape.

As shown in Figure 3, during blanking, the punch 1 enters the die from top to bottom (not shown in Figure 3), and the ejector pin 3 compresses the elastic part 4 under the action of the resistance of the material 5, so that the ejector The front end of the pin 3 is always flush with the front end of the punch 1. After punching, the punch 1 starts to lift up under the drive of the die base 6, and the punched part or waste 51 is aligned with the ejector pin 3. Under the action of the elastic force of the connected elastic part 4, it is separated from the punch 1 and enters the die opening (not shown in FIG. 3 ).

The above-described embodiments are only preferred examples of the utility model, and are not intended to limit the scope of implementation of the utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the utility model patent scope , should be included in the utility model patent application scope.

Claims (4)

1. A mechanism for preventing parts or waste from rising, characterized in that it includes a jacking pin (3) and an elastic member (4) connected to the jacking pin (3), the jacking pin (3) It is arranged inside the punch (1) of the mold, and under the action of the elastic force of the elastic component (4), the front end of the ejector pin (3) exposes the front end of the punch (1). 2. The mechanism for preventing parts or waste from rising according to claim 1, characterized in that: the elastic member (4) is a spring. 3. The mechanism for preventing workpieces or scraps from rising according to claim 1, characterized in that: the front end of the ejector pin (3) is spherical. 4. The mechanism for preventing workpieces or scraps from rising according to any one of claims 1-3, characterized in that: the diameter of the ejector pin (3) is 2-6mm.

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