Self-clamping piercing die

Abstract

The utility model discloses a kind of self-clamping punching die, including upper die structure and the lower die structure compatible with upper die structure, upper die plate is installed on upper die holder, side push lead column is symmetrically arranged and vertically installed on the lower surface of upper die plate, pressing plate is slidably installed on side push lead column, spring is sleeved on side push lead column, and the two ends of spring are respectively abutting tightly upper die plate and pressing plate, long hole punch is vertically installed on upper die plate;Lower die plate is installed on lower die holder, side push clamping block is symmetrically arranged and slidably installed in the sliding slot of lower die plate, lower die insert is installed on lower die holder, and lower die insert is located between two side push clamping blocks, the working end of two side push clamping blocks is compatible with the two sides of workpiece on lower die insert.The punching, pressing and clamping action of the die is simultaneously and continuously carried out, single working time is short, convenient to use and high efficiency, and simple structure, low in cost, ensure the stable clamping of workpiece, guarantee processing quality.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a self-clamping punching die. Background Technology

[0002] In the field of sheet metal stamping, it is often necessary to use stamping dies to punch out oblong holes (waist-shaped holes) and other process shapes on workpieces. Traditional punching dies mainly face the following technical bottlenecks when processing such holes: 1. Poor workpiece positioning reliability: Thin sheet metal is prone to displacement or deformation under the action of punching force, requiring additional pneumatic / hydraulic clamping mechanisms (such as CN210547527U), which increases the complexity of the die by more than 30% and increases the production line configuration cost. 2. Low efficiency of multi-process coordination: Existing split clamping solutions (such as the independent pressure block of CN111515315A) require the clamping action to be completed before the stamping, increasing the single cycle time by 0.5-1 second, which cannot match the cycle time requirements of high-speed punch presses (>60SPM).

[0003] Currently, existing punching dies with clamping functions or mechanisms are complex in structure, expensive, and involve separate and independent processes, resulting in inconsistent operation and low efficiency. There is an urgent need for a punching die with a simple structure that can automatically clamp the workpiece during punching. Utility Model Content

[0004] The purpose of this utility model is to provide a self-clamping punching die to solve the problems of some punching dies with clamping functions or mechanisms having complex structures, high costs, separate and independent processes, insufficient continuity in operation, and low efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A self-clamping punching die includes an upper die structure and a lower die structure adapted to the upper die structure. The upper die structure includes an upper die base, an upper die plate, side pusher pillars, a spring, a pressure plate, and an elongated punch. The upper die plate is mounted on the upper die base. The side pusher pillars are symmetrically arranged and vertically mounted on the lower surface of the upper die plate. The pressure plate is slidably mounted on the side pusher pillars. The spring is fitted on the side pusher pillars, and the two ends of the spring abut against the upper die plate and the pressure plate, respectively. The elongated punch is vertically mounted on the upper die plate. The lower mold structure includes a lower mold base, a lower mold plate, side push clamps, and a lower mold insert. The lower mold plate is installed on the lower mold base. The side push clamps are symmetrically arranged and slidably installed in the grooves of the lower mold plate. The lower mold insert is installed on the lower mold base and is located between the two side push clamps. The working ends of the two side push clamps are adapted to the two sides of the workpiece on the lower mold insert. The side push guide post is adapted to the outer side of the side push clamp; The elongated punch passes through the pressure plate and is adapted to the workpiece.

[0006] A further technical solution is that the side push post is provided with a limiting groove that slides with the pressure plate.

[0007] A further technical solution is: the bottom of the side push guide post is provided with a first wedge-shaped surface with the bottom end facing outward, and the outer top of the side push clamp is provided with a second wedge-shaped surface with the top end facing inward, and the first wedge-shaped surface and the second wedge-shaped surface are adapted to each other.

[0008] A further technical solution is that the side-pushing clamp has an L-shaped structure.

[0009] A further technical solution is that the lower mold insert is provided with a material storage cavity.

[0010] A further technical solution is that adjustable baffles are symmetrically arranged on the lower mold insert.

[0011] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: This utility model proposes a self-clamping punching die. When punching a workpiece, the die uses a side pusher column to push two side pusher blocks towards each other, clamping the workpiece to be punched. At the same time, the pressure plate also presses the workpiece during the downward movement of the side pusher column. In the entire punching process, the punching, pressing and clamping actions of the die are carried out simultaneously and continuously. The single working time is short, it is convenient to use and highly efficient, and the structure is simple and low cost. It ensures stable clamping of the workpiece and guarantees the processing quality. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of a self-clamping punching die according to the present invention.

[0013] Figure 2 This utility model Figure 1 A structural diagram from a top-down perspective.

[0014] Figure 3 This utility model Figure 1 A schematic diagram of the structure of the middle-side push column.

[0015] Reference numerals in the attached drawings: 1. Upper die base; 2. Upper template; 3. Side push guide post; 31. Limiting groove; 4. Spring; 5. Pressure plate; 6. Long hole punch; 7. Lower die base; 8. Lower template; 9. Side push clamping block; 10. Lower die insert; 11. Workpiece; 12. Baffle. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0022] This implementation example Figure 1 and Figure 2 As shown, a self-clamping punching die includes an upper die structure and a lower die structure adapted to the upper die structure. The upper die structure includes an upper die base 1, an upper die plate 2, side pusher pillars 3, a spring 4, a pressure plate 5, and a long hole punch 6. The upper die plate 2 is mounted on the upper die base 1. The side pusher pillars 3 are symmetrically arranged and vertically mounted on the lower surface of the upper die plate 2. The pressure plate 5 is slidably mounted on the side pusher pillars 3. The spring 4 is fitted on the side pusher pillars 3, and the two ends of the spring 4 abut against the upper die plate 2 and the pressure plate 5 respectively. The long hole punch 6 is vertically mounted on the upper die plate 2. The lower mold structure includes a lower mold base 7, a lower mold plate 8, side push clamping blocks 9, and a lower mold insert 10. The lower mold plate 8 is installed on the lower mold base 7. The side push clamping blocks 9 are symmetrically arranged and slidably installed in the grooves of the lower mold plate 8. The lower mold insert 10 is installed on the lower mold base 7 and is located between the two side push clamping blocks 9. The working ends of the two side push clamping blocks 9 are adapted to the two sides of the workpiece 11 on the lower mold insert 10. The side push guide post 3 is adapted to the outer side of the side push clamping block 9; The elongated punch 6 passes through the pressure plate 5 and is adapted to the workpiece 11.

[0023] The working process of this utility model is as follows: First, the workpiece 11 is placed on the stamping station of the lower die structure, that is, on the lower die insert 10. Then, the hydraulic components of the hydraulic stamping equipment bring the upper die structure down until the side push guide post 3 pushes the two side push clamping blocks 9 to move towards each other in the slide groove. The two side push clamping blocks 9 clamp the workpiece 11 and position it. At the same time, the pressure plate 5 will also press the workpiece 11 down. Then, the long hole punch 6 will punch the workpiece 11. Finally, the punching is completed, and the die is reset for the next processing.

[0024] Preferably, such as Figure 3 As shown, the side pusher post 3 is provided with a limiting groove 12 that slides with the pressure plate 5.

[0025] The limiting groove 12 is used to limit the sliding of the pressure plate 5, prevent it from falling off and control its movable stroke when it is pressed.

[0026] Preferably, the bottom of the side push guide post 3 is provided with a first wedge-shaped surface with the bottom end facing outward, and the outer top of the side push clamping block 9 is provided with a second wedge-shaped surface with the top end facing inward, and the first wedge-shaped surface and the second wedge-shaped surface are adapted to each other.

[0027] As the side push guide post 3 moves downward, its first wedge-shaped surface will match the second wedge-shaped surface of the side push clamping block 9, pressing the two side push clamping blocks 9 together, that is, the two side push clamping blocks 9 clamp the workpiece.

[0028] It is worth noting that a reset spring can be installed in the slide groove. After the side push guide post 3 moves upward and resets, the two side push clamps 9 are reset under the action of their respective reset springs.

[0029] Preferably, the side-pushing clamp 9 has an L-shaped structure.

[0030] The horizontal end of the L-shaped side-push clamping block 9 is used to clamp the workpiece 11.

[0031] Preferably, the lower mold insert 10 is provided with a material storage cavity.

[0032] The storage chamber can temporarily store flushed waste materials, serving a collection function.

[0033] Preferably, adjustable baffles 12 are symmetrically arranged on the lower mold insert 10.

[0034] Two side-push clamping blocks 9 position and clamp the workpiece 11 in the horizontal direction, and two baffles 12 fix the workpiece 11 in the vertical direction.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-clamping punching die, characterized in that: The upper mold structure includes an upper mold structure that is adapted to the upper mold structure. The upper mold structure includes an upper mold base (1), an upper mold plate (2), a side pusher post (3), a spring (4), a pressure plate (5), and a long hole punch (6). The upper mold plate (2) is installed on the upper mold base (1). The side pusher posts (3) are symmetrically arranged and vertically installed on the lower surface of the upper mold plate (2). The pressure plate (5) is slidably installed on the side pusher post (3). The spring (4) is fitted on the side pusher post (3), and the two ends of the spring (4) abut against the upper mold plate (2) and the pressure plate (5) respectively. The long hole punch (6) is vertically installed on the upper mold plate (2). The lower mold structure includes a lower mold base (7), a lower template (8), side push clamps (9), and a lower mold insert (10). The lower template (8) is mounted on the lower mold base (7). The side push clamps (9) are symmetrically arranged and slidably mounted in the grooves of the lower template (8). The lower mold insert (10) is mounted on the lower mold base (7) and is located between the two side push clamps (9). The working ends of the two side push clamps (9) are adapted to the two sides of the workpiece (11) on the lower mold insert (10). The side push guide post (3) is adapted to the outer side of the side push clamp (9); The elongated punch (6) passes through the pressure plate (5) and is adapted to the workpiece (11).

2. The self-clamping punching die according to claim 1, characterized in that: The side pusher column (3) is provided with a limiting groove (31) that slides with the pressure plate (5).

3. The self-clamping punching die according to claim 1, characterized in that: The bottom of the side push guide post (3) is provided with a first wedge-shaped surface with the bottom end facing outward, and the top of the side push clamp (9) is provided with a second wedge-shaped surface with the top end facing inward. The first wedge-shaped surface and the second wedge-shaped surface are adapted to each other.

4. The self-clamping punching die according to claim 1, characterized in that: The side-push clamp (9) has an L-shaped structure.

5. The self-clamping punching die according to claim 1, characterized in that: The lower mold insert (10) is provided with a material storage cavity.

6. The self-clamping punching die according to claim 1, characterized in that: The lower mold insert (10) is symmetrically provided with adjustable baffles (12).

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