Blanking die

Abstract

The utility model belongs to the technical field of part machining, and discloses a blanking die. The die comprises a die body, a die insert is installed on the edge of the die body, the edge of the die insert is connected to a steel plate in a pressed mode, the cutting edge of the die insert is in a concave-convex shape, and the steel plate is in a concave-convex shape after being cut. The problem that in the prior art, the step pitch is shortened to cause material shortage of one side of a groove in a steel plate is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of part processing, in particular to a blanking die. Background Art

[0002] The body of an automobile is made of steel plates. The steel plates are in a reel shape. When processing the steel plates, it is necessary to unroll the steel plates and cut the steel plates at equal intervals through a die. The steel plates pass through the lower side of the die at a uniform speed. The die cuts the steel plates at the same time interval. The length of the steel plate cut out is the pitch. If the cutting edge of the die is linear, the cut edge of the steel plate will be linear. At the set pitch, the number of steel plates that can be processed from each steel coil is fixed.

[0003] Currently, in order to reduce the processing cost of vehicles, the pitch is usually shortened, so that the number of steel plates that can be processed from a single set of steel coils becomes more. However, in the subsequent steel plate processing process, it is necessary to punch grooves on the edge of the steel plate. Through the above grooves, subsequent positioning ability is provided for the secondary steel plate, so as to facilitate the processing of the steel plate. If the edge of the steel plate cannot cross the groove after stamping, it will cause the lack of material phenomenon, resulting in the inability to position the steel plate during the subsequent processing and positioning process, and the steel plate cannot meet the processing requirements subsequently. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a blanking die to solve the problem that shortening the pitch in the prior art will cause lack of material on one side of the groove on the steel plate.

[0005] To achieve this purpose, the utility model adopts the following technical solutions: The utility model provides a blanking die, which includes a die body. A die insert is installed on the edge of the die body. The edge of the die insert is pressed against the steel plate. The cutting edge of the die insert is concave-convex. The steel plate is cut into a concave-convex shape by the cutting edge.

[0006] Preferably, a convex portion is formed on the edge of the die insert, and an arc-shaped edge is provided at the top of the convex portion.

[0007] Preferably, the convex portions are installed at equal intervals, and the radius of the arc-shaped edge is 6 cm.

[0008] Preferably, the die body includes a first main body portion and a second main body portion. The second main body portion is installed on both sides of the first main body portion. Die inserts are installed on the same-side edges of the first main body portion and the second main body portion.

[0009] Preferably, a positioning post is formed on the side of the first main body portion, and a positioning groove is formed on the side of the second main body portion. The positioning post is inserted into the positioning groove.

[0010] Preferably, a concave area is formed between the protruding parts, and the bottom end of the concave area is arc-shaped.

[0011] Preferably, the radius of the bottom end of the concave area is 6 cm.

[0012] Beneficial effects: The unfolded steel plate is successively cut by the mold body. The protruding areas on the steel plate can span the entire stamping groove, so that there is no lack of material on both sides of the groove. The protruding areas of two adjacent steel plates are staggered together and jointly occupy the same length of the steel plate. The more steel plates are cut, the longer the length of the steel plate can be saved, thereby achieving the purpose of saving materials. Description of the Drawings

[0013] Figure 1 is the structural diagram of the first main body part of the present invention;

[0014] Figure 2 is the structural diagram of the second main body part of the present invention;

[0015] Figure 3 is the cutting schematic diagram of the mold body of the present invention;

[0016] Figure 4 is the cutting schematic diagram of the straight-line mold steel plate.

[0017] In the figure: 1. Steel plate; 12. Forming area; 13. Protruding area; 14. Concave area; 2. Mold insert; 21. Protruding part; 22. Concave part; 3. First main body part; 4. Second main body part. Detailed Embodiments

[0018] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that only the parts related to the present invention are shown in the drawings for the convenience of description, rather than all the structures.

[0019] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0020] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may also include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0021] In the description of the present embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0022] Under the prior art, when cutting a steel plate, it is necessary to reserve areas on both sides of the steel plate in the forming area that can be stamped into grooves, and it is necessary to reserve a relatively long steel plate for the above areas for use by the forming areas on both sides, resulting in waste of the steel plate and increasing the manufacturing cost of the vehicle.

[0023] To solve the above problems, as Figures 1 to 2 shown, the present utility model provides a blanking die, which includes a die body. A die insert 2 is installed at the edge of the die body, and the edge of the die insert 2 is crimped on the steel plate 1. The cutting edge of the die insert 2 is concave-convex. The steel plate 1 is cut into a concave-convex shape by the cutting edge, and corresponding raised areas 13 and sunken areas 14 will also be formed on the steel plate 1. The position of the raised area 13 on the steel plate 1 is the position of the concave part 22 on the die insert 2, and the position of the sunken area 14 on the steel plate 1 is the position of the convex part 21 on the die insert 2.

[0024] The edge of the steel plate 1 is cut into a concave-convex shape. The protruding part can be conical or circular. As long as it can span the groove during the stamping process, it is a qualified product. The edges of the two groups of steel plates 1 can be spliced through the convex area 13 and the concave area 14 of the concave-convex shape. The concave-convex areas on the two adjacent steel plates 1 occupy the same length interval of the same steel plate 1. The areas occupied by the concave-convex shape can overlap. In this length interval of the steel plate 1, a convex area 13 that can span the groove can be provided for the forming areas 12 of the steel plates 1 on both sides at the same time. During the cutting process of the steel plate 1, the convex area 13 between the two adjacent forming areas 12 occupies the same section of the steel plate 1 length. The more times of cutting, the more steel plate 1 length can be saved. Furthermore, more stamped steel plates 1 can be cut from the steel coil, reducing the production cost.

[0025] A convex part 21 is formed at the edge of the mold insert 2. The top of the convex part 21 is provided with an arc edge. The edge of the convex part 21 is circular, which is convenient for mold making and can timely adjust the design dimensions and change the side length of the arc edge related radius.

[0026] The convex parts 21 of the present utility model are installed at equal intervals, and the radius of the arc edge is 6 cm. When the radius is 6 cm, when stamping the groove, the lack of material on both sides of the groove is less. After the steel plate 1 is cut and formed, the arc edge is processed into an arc with a radius of 6 cm, which can minimize the lack of material when the steel plate 1 is connected to other components, achieving the effect of stable connection.

[0027] The mold body of the present utility model includes a first main body part 3 and a second main body part 4. The second main body part 4 is installed on both sides of the first main body part 3. Mold inserts 2 are installed on the same-side edges of the first main body part 3 and the second main body part 4. The blanking mold of the present utility model needs to cooperate with workpieces of different shapes. The straight side length of the original workpiece is improved to a wavy side length, so that adjacent steel plates 1 can share the same section of the steel plate 1 interval, saving materials and shortening the pitch.

[0028] A positioning column is formed on the side of the first main body part 3, and a positioning groove is formed on the side of the second main body part 4. The positioning column is inserted into the positioning groove. The second main body part 4 is detachably installed on both sides of the first main body part 3, which is convenient for matching the first main body part 3 with different structures and can adapt to the cutting of workpieces of different shapes.

[0029] A concave part 22 is formed between the convex parts 21. The bottom end of the concave part 22 is arc-shaped. At this time, the edge cut by the mold insert 2 is wavy, which can shorten the pitch and avoid the lack of material phenomenon. The radius of the bottom end of the concave part 22 is 6 cm. At this time, the wavy shape is close to the sine shape, making the edges of adjacent steel plates 1 similar, leaving the same area of convex area 13 for the steel plates 1 on both sides, so that the lack of material phenomenon can be avoided during the stamping process of the steel plate 1, and at the same time, the pitch can be shortened.

[0030] As Figure 4 shown, in the prior art, when using a straight die for cutting, if a raised area 13 of the same length as that of the present utility model is left, each adjacent steel plate 1 uses a section of the steel plate 1. When stamping grooves subsequently, meat shortage can be avoided. However, the required length of the steel plate 1 is relatively large, and only 4 groups of steel plates 1 can be cut within the specified length. And as Figure 3 shown, when using the die insert 2 of the present utility model for cutting, adjacent steel plates 1 share the same section of area. The raised areas 13 formed respectively in this area correspond to the steel plates 1 on both sides. The raised area 13 can avoid meat shortage on one side of the groove when stamping the groove. At the same time, since every two adjacent steel plates 1 share the same section of area to form the raised area 13, compared with cutting using a straight die, a section of the length of the steel plate 1 can be saved, increasing the number of steel plates 1 that can be cut from each steel coil. In comparison with Figure 3 , 5 groups of steel plates 1 can be cut under the same length. Thus, while ensuring that the steel plates 1 will not have meat shortage, the production cost can be reduced.

[0031] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A blanking die, characterized in that: It comprises a mould body, the edge of which is mounted a mould insert (2), the edge of which is pressed onto a steel plate (1), the cutting edge of which is concave-convex, and the steel plate (1) is cut by the cutting edge into a concave-convex shape.

2. The blanking die according to claim 1, characterized in that: The edge of the mold insert (2) forms a raised portion (21), and the top end of the raised portion (21) is provided with an arc-shaped edge.

3. The blanking die according to claim 2, characterized in that: The protrusions (21) are installed at equal intervals, and the radius of the arc-shaped edge is 6 cm.

4. The blanking die according to claim 1, characterized in that: The mold body comprises a first main body part (3) and a second main body part (4), wherein the second main body part (4) is mounted on both sides of the first main body part (3), and the mold insert (2) is mounted on the same side edges of the first main body part (3) and the second main body part (4).

5. The blanking die according to claim 4, characterized in that: A positioning column is formed on the side of the first main body (3), and a positioning groove is formed on the side of the second main body (4), and the positioning column is inserted into the positioning groove.

6. The blanking die according to claim 3, characterized in that: A recessed portion (22) is formed between the raised portions (21), and the bottom end of the recessed portion (22) is arc-shaped.

7. The blanking die according to claim 6, characterized in that: The radius of the bottom end of the recessed portion (22) is 6 cm.

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