CN204412878U - A kind of lateral cut structure for drawn products under diel - Google Patents

Abstract

The utility model relates to a lateral cutting structure for the lower stretching product of a stamping die, comprising a lower cutting die assembly and an upper cutting punch assembly; the lower cutting die assembly includes a die cavity fixed on the lower die base The concave formwork is embedded with a supporting block, and a concave mold insert is installed on the side of the drawn product to be cut off in the cavity of the concave mold; the upper cutting punch assembly includes a backing plate fixed at the lower end of the upper mold base and The fixed plate includes an oblique wedge whose upper part is fixedly connected with the backing plate and whose lower part protrudes from the lower end of the fixed plate, and a discharge plate which is arranged under the fixed plate and can move up and down through the combined structure of tension and compression. Guide rail, a slider is installed on the guide rail, and a through hole is provided on the guide rail for the wedge to pass through. The upper end of the slider is provided with a wedge hole matching with the wedge. The elastic pressing piece A away from the die insert. The structure can realize the lateral cutting of the down-stretched product, which ensures the shape and accuracy requirements of the cutting part of the product.

Description

A lateral cut-off structure for stretching products under a stamping die

technical field

The utility model relates to a cut-off structure for the production of stretched products under a stamping die, in particular to a lateral cut-off structure for stretched products under a stamping die.

Background technique

There are two ways to cut off the stretched product of the existing stamping die after stretching: one is to realize it through the upper stretching and lateral cutting structure, see Figure 3 for the upper stretching and lateral cutting structure. Both the punch and the die are fixed on the lower mold base, and the lateral cutting of the stretched product is realized by the inclined wedge fixed on the upper mold base going down vertically. This cutting structure can form a flat cut at the cutting position, which can meet the shape and accuracy requirements, but it is currently only applicable to upper-drawn products 2 ^, and cannot meet the direction requirements of stamping burrs on lower-drawn products. In addition, it is inconvenient for the product to be delivered; the other is to cut the structure vertically. Realization, the vertical cutting structure is shown in Figure 4, the punch of the cutting structure is fixed on the upper mold base, the die is fixed on the lower mold base, and the product is cut at the cutting edge of the punch and the die through the downward movement of the punch. , this kind of cut-off structure can meet the requirements of the stamping burr direction of the down-drawn product, and the product is also more convenient to output, but it cannot form a flat cut at the cut-off point, and cannot guarantee the shape and accuracy requirements of the cut-off point of the product.

Contents of the invention

In order to solve the technical problems in the known technology, the utility model provides a lateral cutting structure for stretching products under a stamping die, which ensures the shape and accuracy requirements of the cutting part of the product and facilitates the product delivery.

The technical scheme that the utility model takes for solving the technical problem existing in the known technology is:

A lateral cut-off structure for lower-stretched products of a stamping die, characterized in that it includes a lower cut-off die assembly and an upper cut-off punch assembly; the lower cut-off die assembly includes a Concave formwork, on which a cavity for accommodating stretched products is formed, a cavity insert is installed on the side of the cavity where the edge of the stretched product is to be cut off, and a support block is embedded on the cavity , the upper end of the support block protrudes from the upper end of the die plate, and the height difference between the two is consistent with the thickness of the edge of the stretched product; the upper cutting punch assembly includes a backing plate and The fixed plate includes an inclined wedge with a wedge surface at the lower end, the upper part of the inclined wedge is fixed vertically with the backing plate, and the lower part protrudes from the lower end of the fixed plate, including the unloading plate, which can move up and down through the tension-compression combination structure It is set under the fixed plate, and there is a mounting groove at the lower end of the unloading plate. A guide rail is installed in the mounting groove, and a slider is installed on the guide rail. The lower part of the slider protrudes from the lower end of the unloading plate, and The die cavity on the die plate is aligned, the guide rail is provided with a through hole for the wedge to pass through, and a wedge hole matched with the wedge is provided at the position corresponding to the through hole on the upper end of the slider, including The elastic pressing piece A is arranged in the installation groove of the stripper plate to keep the slide block away from the insert block of the die.

The utility model can also adopt the following technical solutions:

The tension-compression combination structure includes a distance screw and an elastic top pressing member B; the distance screw is movably mounted on the upper mold base, the backing plate and the fixing plate, and its lower end is fixedly connected with the stripping plate; the elastic top The pressing piece B is mounted on the upper die base, the backing plate and the fixed plate, and its upper end is provided with a gland fixedly connected with the upper die base, and its lower end is pressed against the upper surface of the discharge plate.

Both the elastic pressing part A and the elastic pressing part B adopt compression springs.

The advantages and positive effects that the utility model has are:

With this lateral cutting structure, when the upper cutting punch assembly goes down, when the unloading plate contacts the upper end of the support block, the upper edge of the stretched product is compressed, and the upper cutting punch assembly continues to descend During the process, the lower end of the oblique wedge is inserted into the wedge hole of the slider. Through the cooperation of the two slopes, the slider is driven to move along the guide rail in the direction close to the insert of the die, so that the cutting edge part of the front end of the slider is in contact with the die. The cutting edge of the upper end of the insert is punched, which realizes the cutting of the down-stretched product. The cutting part forms a flat incision, which ensures the shape and accuracy requirements of the cutting part of the product. The structure also makes it more convenient for the product to be delivered after cutting.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a cross-sectional schematic diagram of the cooperation between the guide rail and the slider in Fig. 1;

Fig. 3 is the schematic diagram of existing upper stretching lateral cutting structure;

Fig. 4 is a schematic diagram of a conventional down-stretching vertical cut-off structure.

In the figure: 1, lower mold base; 2, concave formwork; 210, concave mold cavity; 3, concave mold insert block; 4, support block; 5, upper mold base; 6, backing plate; 7, fixed plate; 8, Inclined wedge; 810, wedge surface; 9, unloading plate; 910, installation groove; 10, guide rail; 101, through hole; 11, slider; 111, wedge hole; 12, elastic top pressure piece A; 13, fixed distance Screw; 14. Elastic pressing part B; 15. Gland; 1 ^, , lower stretching product; 2 ^, , upper stretching product.

Detailed ways

In order to further understand the invention content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

Please refer to Figures 1 and 2, a lateral cut-off structure for a lower-drawing product of a stamping die, including a lower cut-off die assembly and an upper cut-off punch assembly. The specific structure of the lower cut-off die assembly and the upper cut-off punch assembly is as follows:

The lower cutting die assembly includes a die plate 2, the die plate is fixed on the lower mold base 1, and a die cavity 210 for accommodating the stretched product is formed on the die die cavity, and the edge to be cut off is located in the die cavity A die insert 3 is installed on one side of the die, and a support block 4 is embedded on the die form. The upper end of the support block protrudes from the upper end of the die form, and the height difference between the two is consistent with the thickness of the edge of the stretched product.

The upper cutting punch assembly includes a backing plate 6 and a fixed plate 7 that are sequentially pressed and fixed on the lower end of the upper die base 5; includes a wedge 8 with a wedge surface 810 at the lower end, and the upper part of the wedge is vertically fixed to the backing plate , its lower part protrudes from the lower end of the fixed plate; including the unloading plate 9, the unloading plate can move up and down through the combination structure of tension and compression, and is arranged under the fixed plate, and the lower end of the unloading plate is provided with a mounting groove 910. A guide rail 10 is installed in the groove, and a slider 11 is installed on the guide rail. The lower part of the slider protrudes from the lower end of the discharge plate and is aligned with the die cavity on the die plate. Through the through hole 101, a wedge hole 111 matched with the wedge is provided at the position corresponding to the through hole on the upper end of the slider; including the installation groove of the stripper plate, the slider is far away from the die insert The elastic pressing piece A12.

In the above structure, the combined tension-compression structure preferably includes distance screws 13 and elastic pressing pieces B14. The fixed distance screw is movably mounted on the upper mold base, backing plate and fixing plate, and its lower end is fixedly connected with the stripping plate. Specifically, the upper mold base, the backing plate and the fixed plate are provided with a step hole with a large upper part and a smaller bottom part, and the through step hole, and the fixed distance screw is movably mounted in the step hole. In actual use, in order to improve the stability of the up and down movement of the unloading plate, a spacer that acts as a guide can be set between the step hole and the distance screw, so that the spacer is in contact with the step hole. The elastic pressing part B is mounted on the upper die base, the backing plate and the fixed plate, and its upper end is provided with a gland 15 fixedly connected with the upper die base, and its lower end is pressed against the upper surface of the discharge plate. Specifically, a through hole for installing the elastic pressing piece B is provided on the upper mold base, the backing plate and the fixing plate, and the elastic pressing piece B is installed in the through hole.

In the above structure, the elastic pressing part A and the elastic pressing part B are preferably compression springs, and in addition, an elastic column structure made of urethane can also be used.

The working process of the present utility model is:

Before the mold starts to work, the lower stretched product is moved to the cavity of the die plate. After the mold starts to work, the upper cutting punch assembly goes down together. When the unloading plate touches the upper end surface of the support block, the unloading The plate stops descending. At this time, the upper edge of the lower stretched product is clamped between the upper end surface of the die plate and the lower end surface of the discharge plate. When the upper cutting punch assembly continues to descend, the lower end of the wedge wedge The surface of the wedge is inserted into the wedge hole of the slider, and through the cooperation of the two slopes, the downward force of the wedge on the slider is converted into a force in the horizontal direction, thereby pushing the slider to move along the guide rail toward the direction of the die insert, so that the slider The cutting edge part of the front end and the upper cutting edge part of the die insert form a blanking, and the corresponding part of the stretched product is cut off; then the upper cutting punch assembly goes up, driving the wedge to go up synchronously, so that the slider is pressed against the elastic Under the action of part A, it will stay away from the die insert and return to the original position. When the upper cutting punch assembly continues to move up, the unloading plate will then go up, so that the entire upper cutting punch assembly can be reset. Finally, the The cut stretched product can be easily taken out from the die cavity, thus realizing the lateral cutting of the lower stretched product.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the implementation scope of the present utility model. That is, all equivalent changes and modifications made according to the patent scope of the utility model, for example, the tension-compression combined structure adopts the cooperation structure of the tension spring and the compression spring, etc., all fall into the technical scope of the utility model.

Claims (3)

1. for a lateral cut structure for drawn products under diel, it is characterized in that: comprise lower cut-out die assembly and upper cut-out punch assemblies, described lower cut-out die assembly comprises the concave template be fixed on die shoe, concave template is shaped with the matrix cavity holding drawn products, in matrix cavity, be positioned at the side that drawn products will excise edge die abaculus is installed, concave template is embedded with back-up block, the upper end of back-up block is stretched out from the upper end of concave template, both differences in height and the consistency of thickness of drawn products edge, described upper cut-out punch assemblies comprises the backing plate and fixed head that are pressed abd fixed on upper bolster lower end successively, comprise the wedge that lower end is provided with wedge surface, the top of wedge is vertical with backing plate to be connected, its underpart is stretched out from the lower end of fixed head, comprise stripper, stripper is by the tension and compression combining structure below being arranged on fixed head moving up and down, mounting groove is provided with in the lower end of stripper, in mounting groove, guide rail is installed, guide rail is provided with slide block, the bottom of slide block is stretched out from the lower end of stripper, and align with the matrix cavity on concave template, described guide rail is provided with the through hole passed for wedge, the wedge hole of matching with wedge is provided with in the position that the upper end of slide block is corresponding with this through hole, comprise and be located in stripper mounting groove, make slide block away from the elastic top casting die A of die abaculus.

2. the lateral cut structure for drawn products under diel according to claim 1, is characterized in that: described tension and compression combining structure comprises distance screws and elastic top casting die B; Described distance screws activity is installed on upper bolster, backing plate and fixed head, and its lower end is fixedly connected with stripper; Described elastic top casting die B is installed on upper bolster, backing plate and fixed head, and its upper end is provided with the gland be fixedly connected with upper bolster, and its lower end is pressed on the upper surface of stripper.

3. the lateral cut structure for drawn products under diel according to claim 2, is characterized in that: described elastic top casting die A and elastic top casting die B all adopts stage clip.