Edge trimming die for cambered surface stamping part

Abstract

The utility model belongs to mould technical field especially relates to cambered surface stamping part trimming die. Cambered surface stamping part trimming die, including upper die holder and lower die holder, the upper die holder is connected with female die through elastic part, and the lower die holder is connected with male die matched with female die, the upper die holder of one side of female die is connected with trimming mechanism, the trimming mechanism includes: two opposite swing blocks, and the swing blocks are rotatably connected with the upper die holder, and the swing blocks are provided with arc cutting knife on one side relative to female die, drive block is located on the side of male die corresponding swing block, and is used for driving two swing blocks relative movement. The utility model discloses cambered surface stamping part trimming die passes through the trimming mechanism for swing block, can effectively extrude the edge material to the inside and fold again and then cut, and the punching is more thorough.

Description

Technical Field

[0001] This utility model belongs to the field of metal processing technology, and in particular relates to a cutting die for arc-shaped stamping parts. Background Technology

[0002] Stamping dies are special process equipment used in cold stamping to process metal or non-metal materials into parts or semi-finished parts. They are widely used in current technology due to the high structural strength of stamped metal. In sheet metal stamping, shearing (such as edge trimming) of sheet metal parts is involved. Currently, stamping and trimming are usually completed using two separate sets of dies, increasing the cost of manufacturing. Some systems now use the same die for both stamping and trimming, but this can lead to situations where the workpiece is not yet stamped while the trimming is complete. If stamping continues before the trimming is finished, the resulting workpiece dimensions may not meet requirements, such as the central structure being formed but the edge dimensions being insufficient. Patent CN111545647A discloses a shaping and trimming stamping die, including an upper die base, an upper template, a lower die base, a lower template, an upper pressure plate, and a lower pressure plate. An upper pad is bolted to the upper template and the upper die base. A guide sleeve is fixedly connected to the upper die base. A guide post that can be inserted into the guide sleeve is fixedly connected to the lower die base. The upper die base can move vertically along the guide post. The upper pressure plate is located below the upper pad. A connector is vertically slidably connected to the upper pad. The lower end of the connector extends out of the upper pad and is threaded to the upper pressure plate. The upper end of the connector is vertically slidably connected to the upper pad. The upper template is fitted in the middle of the upper pressure plate. The upper pressure plate can slide vertically along the upper template. A first elastic element, which is a spring, is connected between the upper pressure plate and the upper pad. In practice, during workpiece processing, the workpiece to be shaped is placed on the lower template. After the workpiece is placed, the hydraulic cylinder is activated, causing the upper mold base to move downward. The workpiece is positioned by the interlocking of the upper and lower templates. After the workpiece is positioned, the upper template 2, driven by the upper mold base 1, continues to press down on the lower template. The elastic force of the second elastic element (nitrogen spring) at the bottom of the lower template gradually increases, which gradually increases the squeezing force on the workpiece between the upper and lower templates, thus shaping the workpiece. Because the lower template is vertically slidably connected to the lower pressure plate, the upper template drives the lower template to continue moving downward, causing the edge material of the workpiece to be gradually clamped by the pressure plates (upper and lower pressure plates). Although the edge material of the workpiece is clamped by the pressure plates, other parts of the workpiece are still located inside the mold (i.e., between the upper and lower templates). The upper template continues to push the lower template downward, causing shearing to occur between the edge material of the workpiece and the part of the workpiece that is pressed by the mold. The shearing force generated during the stamping process acts on the workpiece, causing the edge material of the workpiece to be cut off, thus achieving the edge trimming of the workpiece. While this technical solution provides space for material flow during workpiece shaping, preventing the cutting process from being completed before the workpiece shaping is finished, it is only suitable for straight-line cutting and not for cutting curved workpieces. Utility Model Content

[0003] The purpose of this utility model is to provide a cutting die for arc-shaped stamping parts, so as to complete the stamping and cutting of arc-shaped workpieces using the same tool.

[0004] To achieve the above objectives, this utility model provides a cutting die for arc-shaped stamping parts, including an upper die base and a lower die base. The upper die base is connected to a die cavity via an elastic element, and the lower die base is connected to a punch that matches the die cavity.

[0005] A trimming mechanism is connected to the upper die base on one side of the die cavity, and the trimming mechanism includes:

[0006] Two opposing swing blocks are rotatably connected to the upper mold base, and the two swing blocks are provided with arc-shaped cutters on one side of the die cavity;

[0007] A drive block is located on one side of the punch corresponding to the swing block, and is used to drive the two swing blocks to move relative to each other.

[0008] Optionally, the trimming mechanism further includes:

[0009] An intermediate block is disposed between the two swing blocks. When the two swing blocks move to their relative positions, the intermediate block limits the swing blocks. An arc-shaped cutter is provided on one side of the intermediate block relative to the die. When the two swing blocks move to their relative positions, the two swing blocks and the intermediate block form a complete arc.

[0010] The return spring is located on both sides of the middle block and is connected to the swing blocks on both sides of the middle block.

[0011] Optionally, a stop block is provided on one side of the drive block, and the stop block is disposed opposite to the punch.

[0012] Optionally, the lower ends of both swing blocks are provided with wedge-shaped surfaces, and the wedge-shaped surfaces of the two swing blocks are arranged opposite to each other;

[0013] The driving block consists of two wedge-shaped blocks, and the wedge-shaped surfaces of the two driving blocks respectively mate with the wedge-shaped surfaces of the two pendulum blocks.

[0014] Optionally, limiting blocks are provided on the outer sides of the two swing blocks, and the limiting blocks are connected to the upper mold base.

[0015] Optionally, an edge material collection port is provided on the lower die holder between the abutment block and the punch.

[0016] Optionally, the two swing blocks have an arc-shaped cavity on the side away from the die.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The cutting mechanism of the arc-shaped stamping die of this utility model is a swing block, which can effectively squeeze and gather the edge material inward before cutting it off, resulting in a more thorough punching. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0020] Figure 1 This is a perspective view of the arc-shaped stamping part trimming die of this utility model;

[0021] Figure 2 This is a cross-sectional view of the arc-shaped stamping part trimming die of this utility model;

[0022] Figure 3 This is a schematic diagram of the upper die in the arc-surface stamping edge trimming die of this utility model;

[0023] Figure 4 for Figure 3 A magnified view of part A in the image;

[0024] Figure 5 This is a cross-sectional view of the upper die in the arc-surface stamping edge trimming die of this utility model;

[0025] Figure 6 This is a schematic diagram of the lower die in the arc-surface stamping edge trimming die of this utility model;

[0026] In the picture:

[0027] 100 - Upper mold base; 110 - Die cavity; 120 - Trimming mechanism; 121 - Swing block; 122 - Intermediate block; 123 - Return spring; 124 - Limit block;

[0028] 200-Lower die holder; 210-Punch; 220-Drive block; 230-Support block; 240-Scratching material collection port. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] This embodiment provides a cutting die for curved stamping parts, such as... Figure 1-2 The device includes an upper mold base 100 and a lower mold base 200. The upper mold base 100 is connected to a die 110 via an elastic element, and the lower mold base 200 is connected to a punch 210 that matches the die 110. A trimming mechanism 120 is connected to the upper mold base 100 on one side of the die 110.

[0032] Specifically, such as Figure 3-4 As shown, the trimming mechanism 120 includes two opposing swing blocks 121 and a drive block 220. The two opposing swing blocks 121 are rotatably connected to the upper die base 100. Each swing block 121 has an arc-shaped cutter on one side relative to the die cavity 110, which is used to punch the edge material of the test piece. In this embodiment, the side of each swing block 121 away from the die cavity 110 has an arc-shaped cavity. The purpose of the arc-shaped cavity is to ensure that the edge material is located within the cavity during punching, preventing edge material from splashing. The drive block 220 is located on the side of the punch 210 corresponding to the swing blocks 121, and is used to drive the two swing blocks 121 to move relative to each other, squeezing the edge material on both sides inward, so that the edge material is within the punching range of the arc-shaped cutter of the swing block, and that the edge material is in close contact with the arc-shaped cutter, improving the stability of the punching process.

[0033] In this example, during the mold closing process, the die 110 and the punch 210 first contact to stamp the workpiece. Under the action of the elastic element, the upper die holder 100 can descend further. At this time, the lower die holder 100 drives the swing block 121 of the punching mechanism 120 to continue to move downward, punching the edge material. The elastic element is generally a nitrogen spring.

[0034] As a further solution to this embodiment, such as Figure 4-5As shown, the trimming mechanism 120 also includes an intermediate block 122, which is located between two swing blocks 121. When the two swing blocks 121 move to their relative positions, the intermediate block 122 limits the movement of the swing blocks 121. The intermediate block 122 has an arc-shaped cutter on one side relative to the die 110. When the two swing blocks 121 move to their relative positions, the two swing blocks 121 and the intermediate block 122 form a complete arc, punching the arc-shaped edge material. A return spring 123 is located on both sides of the intermediate block 122 and connected to the swing blocks 121 on both sides of the intermediate block 122. After the swing blocks 121 on both sides leave the drive block 220, the return spring 123 resets the swing blocks, causing the two swing blocks to move in opposite directions and open the included angle.

[0035] In this embodiment, a limiting block 124 is provided on the outer side of the two swing blocks 121. The limiting block 124 is connected to the upper mold base 100. There is a certain gap between the limiting block 123 and the swing block 121, so that the swing block 121 can swing within a certain range. The limiting block 123 restricts the opening angle when the two swing blocks are reset. The limiting block is detachably connected to the upper mold base 100. The gap between the limiting block 123 and the swing block 121 is adjusted according to the size of the edge material so that the opening angle when the two swing blocks are reset is greater than the size of the edge material.

[0036] As a further embodiment, a support block 230 is provided on one side of the drive block 220. The support block 230 is arranged opposite to the punch 210. When punching, the cutting mechanism 120 will generate a certain lateral force, and the support block 230 can be used to resist the lateral force of the cutting mechanism 120.

[0037] In this embodiment, the lower ends of both swing blocks 121 are provided with wedge-shaped surfaces, and the wedge-shaped surfaces of the two swing blocks 121 are arranged opposite to each other; the driving blocks 220 are two wedge-shaped blocks, and the wedge-shaped surfaces of the two driving blocks 220 respectively cooperate with the wedge-shaped surfaces of the two swing blocks 121. During the descent of the swing blocks 121, the wedge-shaped surfaces of the swing blocks contact the wedge-shaped surfaces of the driving blocks. As the swing blocks 121 continue to descend, the driving blocks 220 cause the two swing blocks to move relative to each other, squeezing the edge material inward. An edge material collection port 240 is opened on the lower die base 200 between the abutment block 230 and the punch 210. After the edge material is punched, it falls from the edge material collection port 240 into the recycling box.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting die for arc-shaped stamping parts, including an upper die base (100) and a lower die base (200), wherein the upper die base (100) is connected to a die cavity (110) via an elastic element, and the lower die base (200) is connected to a punch (210) that matches the die cavity (110). Its features are, A trimming mechanism (120) is connected to the upper die base (100) on one side of the die cavity (110), the trimming mechanism (120) comprising: Two opposing swing blocks (121) are rotatably connected to the upper mold base (100), and the two swing blocks (121) are provided with arc-shaped cutters on one side of the die (110); A drive block (220) is located on one side of the punch (210) corresponding to the swing block (121) and is used to drive the two swing blocks (121) to move relative to each other.

2. The arc-surface stamping part trimming die according to claim 1, characterized in that, The trimming mechanism (120) also includes: An intermediate block (122) is disposed between the two swing blocks (121). The intermediate block (122) has an arc-shaped cutter on one side relative to the die (110). When the two swing blocks (121) move into position relative to each other, the intermediate block (122) limits the swing blocks (121), and the two swing blocks (121) and the intermediate block (122) form a complete arc. The reset spring (123) is located on both sides of the middle block (122) and is connected to the swing blocks (121) on both sides of the middle block (122).

3. The arc-surface stamping part trimming die according to claim 1, characterized in that, The drive block (220) has a support block (230) on one side, and the support block (230) is arranged opposite to the punch (210).

4. The arc-surface stamping part trimming die according to claim 1, characterized in that, Both of the two pendulum blocks (121) have wedge-shaped surfaces at their lower ends, and the wedge-shaped surfaces of the two pendulum blocks (121) are arranged opposite to each other; The driving block (220) consists of two wedge-shaped blocks, and the wedge-shaped surfaces of the two driving blocks (220) respectively cooperate with the wedge-shaped surfaces of the two swing blocks (121).

5. The arc-surface stamping part trimming die according to claim 1, characterized in that, Limiting blocks (124) are provided on the outer sides of the two swing blocks (121), and the limiting blocks (124) are connected to the upper mold base (100).

6. The arc-shaped stamping part trimming die according to claim 3, characterized in that, A scrap material collection port (240) is provided on the lower die holder (200) between the abutment block (230) and the punch (210).

7. The arc-shaped stamping part trimming die according to claim 2, characterized in that, The two swing blocks (121) have an arc-shaped cavity on the side away from the die (110).

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