Trimming and separating die structure for part uncoiling and blanking blank

Abstract

The utility model relates to a trimming and separating die structure for a part uncoiling and blanking blank, which comprises an upper die holder and a lower die holder, a first pressure plate, a male die and a second pressure plate are sequentially arranged on the upper die holder, the first pressure plate is connected with the upper die holder through a nitrogen spring, and the second pressure plate is connected with the upper die holder through a spiral spring; a fixed female die and a movable female die are arranged on the lower die base, the fixed female die is in rigid connection with the lower die base, and the movable female die is located below the male die, is adjacent to the fixed female die and is connected with the lower die base through a nitrogen spring. The device is combined with a punching die, so that punching and trimming separation can be realized at the same time in one working step. And the production cost and the mold manufacturing cost are saved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts, specifically relating to a trimming and separation mold structure for uncoiling and blanking part blanks. Background Technology

[0002] In the manufacturing process of automotive parts, it is generally necessary to first uncoil and blank the raw material before processing and shaping. For blanks with holes, holes are usually punched first, followed by trimming and separation. For example... Figure 10 The example shown is a blank for uncoiling a car wheel cover. The conventional mold structure has a fixed die, OP10 punching die I and OP20 trimming die II, which cannot move up and down. The die punches holes in the OP10 process and trims and separates the blank in the OP20 process. Due to the large size of the product, the die feeding pitch is 1200 mm and the length of the entire die is close to 4000 mm, resulting in high mold manufacturing and maintenance costs, high energy consumption during production, and high production costs. Summary of the Invention

[0003] The problem to be solved by this utility model is to provide a trimming and separation mold structure for uncoiling and blanking blanks of parts. This mold structure can be combined with a punching mold and punching and trimming and separation can be achieved simultaneously in one step.

[0004] The technical solution provided by this utility model is: a trimming and separation mold structure for uncoiling and blanking blanks of parts, including an upper mold base and a lower mold base. The upper mold base is provided with a pressure plate 1, a punch and a pressure plate 2 in sequence. The pressure plate 1 is connected to the upper mold base through a nitrogen spring, and the pressure plate 2 is connected to the upper mold base through a helical spring. The lower mold base is provided with a fixed die and a movable die. The fixed die is rigidly connected to the lower mold base, and the movable die is located below the punch and adjacent to the fixed die and is connected to the lower mold base through a nitrogen spring.

[0005] In use, this invention first connects the upper die base to the upper die of the punching die, and the lower die base to the lower die of the punching die. Initially, a powerful nitrogen spring holds the elastic die in place, ensuring the elastic die and the fixed die are level. As the upper die descends, the first and second pressure plates of the upper die press down on the sheet metal. As the upper die continues to descend, the punch descends as well. Because the force of the nitrogen spring under the elastic die is greater than the trimming and blanking force, the elastic die remains stationary under the action of the powerful nitrogen spring, first trimming away the triangular areas on both sides. As the die continues to descend, it is compressed by the helical spring, and the second pressure plate and the upper die base come into contact. Under the action of the punch press, the powerful nitrogen spring is compressed, causing the elastic die to move downwards. The elastic die and the fixed die form a step difference, achieving separation. Simultaneously, the punching die completes the punching process.

[0006] This invention, combined with a punching die, allows for simultaneous punching and trimming in a single process, saving on production and die manufacturing costs. Attached Figure Description

[0007] Figure 1 It is a structure schematic view of the utility model;

[0008] Figure 2 It is a top view of the utility model; Figure 1

[0009] Figure 3 It is a schematic view of the utility model initial working state;

[0010] Figure 4 It is a schematic view of the utility model pressing working state;

[0011] Figure 5 It is a schematic view of the utility model trimming working state;

[0012] Figure 6 It is a partial enlarged view of the utility model; Figure 5

[0013] Figure 7 It is a schematic view of the utility model separation working state;

[0014] Figure 8 It is a partial enlarged view of the utility model; Figure 7

[0015] Figure 9 It is a schematic view of the utility model one-step realization punching trimming separation working state;

[0016] Figure 10 It is a schematic view of the existing punching trimming separation working state. Specific implementation

[0017] Referring to Figure 1 and Figure 2 , the utility model discloses an upper die holder 1, lower die holder 8, upper die holder 1 is equipped with pressure plate one 3, male die 4 and pressure plate two 5 in proper order, pressure plate one 3 is connected with upper die holder 1 through nitrogen spring 9, and pressure plate two 2 is connected with upper die holder 1 through spiral spring, lower die holder 8 is equipped with fixed female die 5 and movable female die 6, fixed female die 5 is rigidly connected with lower die holder 8, movable female die 6 is located below male die 4 and pressure plate two 2 and is adjacent to fixed female die 5 and is connected with lower die holder 8 through strong nitrogen spring 7. When movable female die 6 is at the upper dead point, its top surface is aligned with the top surface of fixed female die 5. When pressure plate one 3 and pressure plate two 5 are at the lower dead point, their bottom surfaces are all aligned with the bottom of male die 4.

[0018] When the utility model is used for trimming and separating the blank of part uncoiling and blanking, the initial state (as shown in Figure 3 , strong nitrogen spring pushes against elastic female die, guarantees that elastic female die and fixed female die are flat and places the plate on it, when the upper die goes down, the pressure plate one and the pressure plate two of the upper die press the plate first (as shown in Figure 4 ​​​As shown in the drawings), as the upper die continues to go down, the male die goes down, and because the nitrogen spring force under the elastic female die is greater than the trimming blanking force, the elastic female die is stationary under the action of the strong nitrogen spring, and the triangular areas on both sides are trimmed off first (as shown in Figure 5 and Figure 6 the drawings). The die continues to go down and is compressed by the spiral spring, and the pressure plate two and the upper die holder are in contact; under the action of the punch, the nitrogen spring (nitrogen spring 9 and strong nitrogen spring 7) is compressed, so that the elastic female die moves downward, the elastic female die and the fixed female die form a step difference, the male die goes down along the step difference, and the separation function is realized (as shown in Figure 7 and Figure 8 the drawings).

[0019] For parts that need to be punched, trimmed and separated, the upper die holder of the utility model is connected with the upper die of the punching die, the lower die holder is connected with the lower die of the punching die, and the above method steps are followed. Under the action of the punch, the punching die completes punching at the same time, the trimming and separation functions are realized (as shown in Figure 9 the drawings, OP10. Punching, trimming and separation), and the product is obtained.

Claims

1. A trimming and separating die structure for a part blanking and piercing blank, comprising an upper die holder, a lower die holder, characterized in that: The upper die base is sequentially provided with a first pressing plate, a male die and a second pressing plate, the first pressing plate is connected with the upper die base through a nitrogen spring, and the second pressing plate is connected with the upper die base through a spiral spring; the lower die base is provided with a fixed female die and a movable female die, the fixed female die is rigidly connected with the lower die base, and the movable female die is located below the male die, is adjacent to the fixed female die and is connected with the lower die base through a nitrogen spring.

2. The trim and separate die structure for opening and blanking a part from a blank as claimed in claim 1 wherein: The nitrogen spring connecting the movable female die with the lower die base is a strong nitrogen spring.

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