CN209849793U - Split type structure convenient to drift installation is fixed - Google Patents

Abstract

The utility model discloses a split structure which is convenient for the installation and fixing of a punch, which comprises a punch, a threaded assembly head, a flange, a straight edge cutting line, a quasi-circular shape, a set plate, and a positioning hole. The main body of the punch is in the form of a cylinder The upper end of the punch is provided with a threaded assembly head, and the outer peripheral surface of the punch below the threaded assembly head is provided with a flange. Circular, the sleeve plate is a flat cylindrical structure, the center of the sleeve plate is provided with a through hole with the same shape and size as the circle, the sleeve plate is matched with the flange, and is set on the outer periphery of the flange On the surface, a positioning hole is opened on the peripheral surface of the cover plate, and the positioning hole extends to the center of the cover plate and penetrates to the through hole. Through the above method, the utility model provides a split structure that is convenient for the installation and fixing of the punch, which makes the installation of the punch convenient and quick, improves the production efficiency, effectively reduces the cost of the mold, and prolongs the service life.

Description

A split structure that facilitates the installation and fixation of the punch

technical field

The utility model relates to the field of installation and fixing devices for forging punches, in particular to a split structure which facilitates the installation and fixing of punches.

Background technique

Forging punching is a common process in forging processing. In closed forging, it is usually necessary to set a flange on the punch to close the die cavity for forging. In the production process of a high-pressure valve body, the punch first passes through the mold insert, and then the mold insert moves forward together with the punch under the thrust of the punch flange to forge the blank, the punch punches, and the mold insert is closed mold cavity. However, in forging, the size of the die insert is often larger than the size of the punch flange, which means that under the same pressure, the punch flange will be subject to greater destructive force, causing the flange to send plastic deformation and cause the punch to prematurely fail.

Usually the punch is a whole, made of die steel, and there is a thread at the end of the punch for a fixed connection. Simply increasing the diameter and thickness of the flange of the punch to increase its strength will increase the cost of the mold and make the punch unsightly, which is not advisable. Secondly, the mass of the large-size punch is too heavy, and it is not easy to install without a special clamping tool, which increases the time cost and reduces the production efficiency. Therefore, it is necessary to change the flange structure to solve the problems of deformation and difficult installation without increasing the size of the flange.

Utility model content

The technical problem mainly solved by the utility model is to provide a split structure which facilitates the installation and fixing of the punch, which makes the installation of the punch convenient and fast, improves the production efficiency, effectively reduces the mold cost and prolongs the service life.

In order to solve the above technical problems, a technical solution adopted by the utility model is to provide a split structure that is convenient for the installation and fixing of the punch, including the punch, the threaded assembly head, the flange, the straight edge cutting line, the quasi-circular shape, the sleeve Plate, positioning hole, the main body of the punch is cylindrical, the upper end of the punch is provided with a threaded assembly head, the outer peripheral surface of the punch below the threaded assembly head is provided with a flange, and the cross-sectional shape of the flange is It is a quasi-circular shape with symmetrical straight-edge cutting lines on both sides. The sleeve plate has a flat cylindrical structure, and a through hole with the same shape and size as the quasi-circular shape is opened in the center of the sleeve plate. The plate is matched with the flange, and is set on the outer peripheral surface of the flange. The peripheral surface of the cover plate is provided with a positioning hole, and the positioning hole extends to the center of the cover plate and penetrates to the through hole.

In a preferred embodiment of the present invention, there are four positioning holes in total, and the interval between adjacent positioning holes is 90 degrees.

In a preferred embodiment of the present invention, the distance between the straight edge cutting line and the outer peripheral surface of the punch is greater than 0.

In a preferred embodiment of the utility model, the thickness of the sleeve plate is greater than the thickness of the flange.

The beneficial effects of the utility model are: the utility model provides a split structure that facilitates the installation and fixing of the punch, which makes the installation of the punch convenient and fast, improves the production efficiency, effectively reduces the cost of the mold, and prolongs the service life .

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, wherein:

Fig. 1 is a structural diagram of a preferred embodiment of a split structure that facilitates the installation and fixation of the punch of the utility model.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figure 1, the utility model embodiment comprises:

A split structure that facilitates the installation and fixing of the punch, including a punch 1, a threaded assembly head 3, a flange 2, a straight edge cutting line, a quasi-circular shape 6, a sleeve plate 5, and a positioning hole 4. The punch 1 The main body is cylindrical, the upper end of the punch 1 is provided with a threaded assembly head 3, and the outer peripheral surface of the punch 1 below the threaded assembly head 3 is provided with a flange 2, and the cross-sectional shape of the flange 2 is two sides. There is a quasi-circle 6 with a symmetrical straight-edge cutting line. The sleeve 5 is a flat cylindrical structure. The center of the sleeve 5 is provided with a through hole with the same shape and size as the quasi-circle 6. The sleeve The plate 5 is matched with the flange 2, and is set on the outer peripheral surface of the flange 2. The peripheral surface of the cover plate 5 is provided with a positioning hole 4, and the positioning hole 4 extends to the center of the cover plate 5 and penetrates to the through hole. .

Wherein, there are 4 positioning holes in total, and the interval between adjacent positioning holes is 90 degrees.

Further, the distance between the straight edge cutting line and the outer peripheral surface of the punch 1 is greater than zero.

Further, the thickness of the sleeve plate 5 is greater than that of the flange 2 .

Specifically, as shown in the figure, the left side is the forging punch, which consists of punch 1, flange 2, and thread 3. According to the requirement of forging punching and the size of the forging, it is necessary to process punches 1 of different sizes. In order to increase the strength of punch flange 2, it is often the main method to increase its thickness and diameter. However, in actual work, the punch flange only plays the role of transmitting pressure, and it does not directly contact the high-temperature forging blank, so it is a bit wasteful to use die steel simply for transmitting pressure. Since the overall surface of the punch is smooth and its shape is basically a cylinder, no suitable tightening part can be found during the tightening process, and special tightening tooling is required. Usually, in order to facilitate the screwing operation, several blind holes are processed at the root of the punch 1 so that the lever can be put into it for screwing. However, the existence of blind holes will reduce the strength of the punch, and it is easy to cause stress concentration, which will cause the punch 1 to break, so it is not advisable.

According to the existing problems, it is considered to process the punch flange 2 into a square circle. As shown in the figure on the right above, the punch flange is processed into a square shape 6, and then the sleeve plate 5 is made separately. The inner hole of the sleeve plate 5 is also square and circular, and its size is consistent with the size of the inner hole of the flange 2. There are several holes 4 on the sleeve plate 5, and the peripheral dimensions can be changed according to requirements. When installing, put the sleeve plate 5 on the flange 2, put the lever into the hole 4 to rotate, the sleeve plate 5 will rotate together with the punch and then tighten; when forging, the pressure will be transmitted through the sleeve plate 5, and the sleeve plate The thickness of 5 is slightly greater than the thickness of flange 2, which can effectively protect flange 2. The cover plate 5 can be made of ordinary structural steel, but the hardness cannot be lower than that of the flange, otherwise the flange 2 will be crushed once deformed.

For example, in the forging process of a certain valve body, the above-mentioned assembly structure is used, the mold material cost is reduced by 8%, the life of the punch is increased by 30%, the mold installation time is reduced by 40%, the efficiency is improved, and the cost is reduced .

The structure of the present application adopts a split structure, and adopts a non-circular assembly surface, which can transmit force. The beneficial effects thus achieved are:

1. The punch is easy to install and fix, improving efficiency;

2. Reduce the mold cost and protect the punch;

3. The boards can be made in different sizes according to the needs, and can be replaced at any time, with versatility;

4. It is convenient to process the set plate.

To sum up, the utility model provides a split structure that facilitates the installation and fixing of the punch 1, which makes the installation of the punch convenient and fast, improves the production efficiency, effectively reduces the cost of the mold, and prolongs the service life.

The above descriptions are only examples of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the utility model description, or directly or indirectly used in other related technologies Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (4)

1. A split structure that facilitates the installation and fixing of the punch, is characterized in that it includes a punch, a threaded assembly head, a flange, a straight edge cutting line, a circle, a sleeve plate, and a positioning hole, and the main body of the punch It is cylindrical, and the upper end of the punch is provided with a threaded assembly head, and the outer peripheral surface of the punch below the threaded assembly head is provided with a flange, and the cross-sectional shape of the flange is that there are symmetrical straight-edged cutting lines on both sides. The sleeve plate is a flat cylindrical structure, and the center of the sleeve plate is provided with a through hole with the same shape and size as the circle shape. The sleeve plate is matched with the flange and is set on the flange. On the outer peripheral surface of the sleeve plate, a positioning hole is opened on the peripheral surface of the sleeve plate, and the positioning hole extends to the center of the sleeve plate and penetrates to the through hole. 2. The split structure for facilitating the installation and fixing of the punch according to claim 1, characterized in that there are 4 positioning holes in total, and the interval between adjacent positioning holes is 90 degrees. 3. The split structure for facilitating the installation and fixing of the punch according to claim 1, wherein the distance between the straight edge cutting line and the outer peripheral surface of the punch is greater than 0. 4. The split structure for facilitating the installation and fixing of the punch according to claim 1, characterized in that, the thickness of the sleeve plate is greater than the thickness of the flange.