Sheet metal forming die capable of adjusting clamping force

Abstract

The utility model relates to the technical field of sheet metal processing, in particular to a sheet metal forming die capable of adjusting clamping force. The stamping die comprises a table top, a to-be-stamped workpiece is placed on the table top, then the to-be-flattened workpiece with the uneven surface is placed at the bottom of an inner cavity of the table top, an air cylinder is started to conduct jacking downwards, a mounting plate is driven to move downwards, the mounting plate drives a die body at the bottom to move downwards, and stamping is conducted on a sheet metal part; the guide rods limit the mounting plate in the horizontal direction so that the mounting plate can move in the vertical direction, the die body can vertically descend and ascend, the good stamping effect can be achieved, and the problems that due to inclination of the die, sheet metal parts are flattened unevenly or deform and the like are solved; and meanwhile, the guide rod and the flattening plate are driven to move downwards to flatten the workpiece, so that the defects of unevenness, scratches, deformation and the like on the surface of a metal plate in the machining and transporting process of the workpiece are prevented, and the product quality is prevented from being influenced.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal processing technology, and more specifically, to a sheet metal forming mold with adjustable clamping force. Background Technology

[0002] Sheet metal forming dies are tools used to process sheet metal materials into specific shapes and sizes, including stamping dies, bending dies, and forming dies. Among them, stamping dies are a special process equipment used in cold stamping to process materials into parts (or semi-finished products).

[0003] There are many existing technologies for stamping devices, such as:

[0004] Chinese patent application CN220196129U discloses a sheet metal stamping die, comprising a box body with sliding rods fixedly installed at each of the four corners, two lead screw cavities fixedly installed at the upper end of the base plate, a hydraulic cylinder fixedly installed at the top of the box body, a hydraulic telescopic rod fixedly installed at the output end of the hydraulic cylinder, and a die fixedly installed at the bottom end of the hydraulic telescopic rod. Compared with existing devices, this structure features two pairs of bidirectional lead screws inside the bottom lead screw cavities. Two motors rotate, driving the two pairs of bidirectional lead screws to rotate. The rotation of the two pairs of bidirectional lead screws causes the clamping blocks to move inward, thereby fixing the punch. Multiple limiting telescopic blocks are installed on the placement frame, which can restrict the workpiece from moving left or right, enabling more stable stamping and forming, increasing forming efficiency, and ensuring that the stamped pattern is in the same position on the workpiece, preventing misalignment.

[0005] Existing stamping equipment uses a stamping mechanism to stamp sheet metal parts. However, during processing and transportation, defects such as unevenness, scratches, and deformation appear on the sheet metal surface, affecting product quality. In view of this, we propose a sheet metal forming die with adjustable clamping force. Utility Model Content

[0006] The purpose of this utility model is to solve the above-mentioned shortcomings and provide a sheet metal forming mold with adjustable clamping force;

[0007] To achieve the above objectives, this utility model provides an adjustable clamping force sheet metal forming mold, including a table, a placement platform fixedly disposed at the top center of the table, a mounting frame disposed at the top of the table, a mounting plate slidably disposed within the inner cavity of the mounting frame, a mold body fixedly disposed at the bottom center of the mounting plate, a guide assembly disposed at the bottom of the mounting plate, the guide assembly including guide rods fixedly disposed on both sides of the bottom of the mounting plate, springs disposed on the surface of the guide rods, the guide rods slidingly extending into the inner cavity of the table, and a pressure plate fixedly disposed at the bottom.

[0008] As a further improvement to this technical solution, a cylinder is fixedly installed on the top of the mounting bracket, and the output end of the cylinder slides into the inner cavity of the mounting bracket, with the bottom of the output end fixedly connected to the top of the mounting plate.

[0009] As a further improvement to this technical solution, a clamping assembly is provided on the top of the placement platform. The clamping assembly includes upright plates fixedly installed on both sides of the top of the placement platform. An L-shaped clamping plate is provided on the inner side of the upright plate. A threaded rod is threaded on the upright plate. The output end of the threaded rod passes through the upright plate and is rotatably connected to one side of the clamping plate. The clamping plate is slidably connected to the placement platform.

[0010] As a further improvement to this technical solution, a slider is fixedly provided at the bottom of the clamping plate, and a groove for the slider to slide is provided at the corresponding position on the top of the placement platform.

[0011] As a further improvement to this technical solution, the vertical distance between the bottom of the mold body and the top of the workpiece to be stamped is equal to the vertical distance between the bottom of the pressure plate and the top of the workpiece to be flattened, so as to ensure the normal operation of the structure.

[0012] As a further improvement to this technical solution, a cabinet door is provided on one side of the tabletop, and shock-absorbing pads are provided at the four ends of the bottom of the tabletop.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In this adjustable clamping force sheet metal forming mold, the workpiece to be stamped is placed on the table, and then the workpiece with an uneven surface to be flattened is placed at the bottom of the inner cavity of the table, so that the workpiece is directly below the pressure plate. The cylinder is activated to lift downward, driving the mounting plate to move downward. Then the mounting plate drives the bottom mold body to move downward, stamping the sheet metal part. During the downward movement of the mounting plate, the guide rod limits the mounting plate in the horizontal direction, so that it moves in the vertical direction. This helps the mold body to descend and rise vertically and smoothly, thereby applying pressure evenly to the sheet metal part, which helps to achieve a good stamping effect and avoids problems such as uneven flattening or deformation of the sheet metal part caused by mold tilting. Then, the spring is used to buffer the mold body, while driving the guide rod and pressure plate to move downward, flattening the workpiece and preventing defects such as unevenness, scratches, and deformation on the sheet metal surface during processing and transportation, which would affect the quality of the product. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a front view structural diagram of the present utility model;

[0017] Figure 3This is a cross-sectional structural diagram of the present invention;

[0018] Figure 4 This is a schematic diagram of the guiding mechanism structure of this utility model.

[0019] The meanings of the labels in the diagram are as follows:

[0020] 1. Countertop; 11. Placement table; 12. Box door;

[0021] 2. Mounting bracket;

[0022] 3. Mounting plate;

[0023] 4. Mold body;

[0024] 5. Guide assembly; 51. Guide rod; 52. Spring;

[0025] 6. Press flat plate;

[0026] 7. Cylinder;

[0027] 8. Clamping assembly; 81. Vertical plate; 82. Clamping plate; 83. Threaded rod;

[0028] 9. Shock-absorbing pads. 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] Please see Figures 1-4 As shown, this embodiment provides a sheet metal forming mold with adjustable clamping force, including a table 1, a placement platform 11 fixedly disposed at the top center of the table 1, a mounting bracket 2 disposed at the top of the table 1, a mounting plate 3 slidably disposed in the inner cavity of the mounting bracket 2, a mold body 4 fixedly disposed at the bottom center of the mounting plate 3, a guide assembly 5 disposed at the bottom of the mounting plate 3, the guide assembly 5 including guide rods 51 fixedly disposed on both sides of the bottom of the mounting plate 3, a spring 52 disposed on the surface of the guide rods 51, the guide rods 51 slidably extend into the inner cavity of the table 1 below, and a pressure plate 6 fixedly disposed at the bottom;

[0031] When the mounting plate 3 moves downward, it drives the guide rod 51 and the pressure plate 6 to move downward, which is used to flatten the sheet metal parts. The guide rod 51 limits the mounting plate 3 in the horizontal direction, so that it moves in the vertical direction. The spring 52 is used to buffer the mold body 4.

[0032] The improvement in this embodiment is as follows: the workpiece to be stamped is placed on the placement table 11, and then the workpiece with an uneven surface to be flattened is placed at the bottom of the inner cavity of the table 1, so that the workpiece is directly below the pressing plate 6, causing the mounting plate 3 to move downward, driving the bottom mold body 4 to move downward, and stamping the sheet metal part. During the downward movement of the mounting plate 3, the guide rod 51 limits the mounting plate 3 in the horizontal direction, so that it moves in the vertical direction. The spring 52 is used to buffer the mold body 4, and at the same time, it drives the guide rod 51 and the pressing plate 6 to move downward, flattening the workpiece.

[0033] To facilitate the movement of mounting plate 3, when moving mounting plate 3, therefore, as follows: Figures 1-3 As shown, a cylinder 7 is fixedly installed on the top of the mounting bracket 2. The output end of the cylinder 7 slides into the inner cavity of the mounting bracket 2, and the bottom of the output end is fixedly connected to the top of the mounting plate 3. When the mounting plate 3 needs to be moved downward to stamp the sheet metal, the workpiece to be stamped is placed on the placement table 11, and then the cylinder 7 is started, controlling the output end of the cylinder 7 to rise downward, driving the mounting plate 3 at the bottom to move downward. Then the mounting plate 3 drives the mold body 4 at the bottom to move downward to stamp the sheet metal. After the stamping is completed, the output end of the cylinder 7 is controlled to rise upward, driving the mounting plate 3 to move upward, so that the mold body 4 returns to its position, preparing for the next stamping. The convenient control of the up and down movement of the mounting plate 3 is beneficial to the subsequent stamping work of the workpiece.

[0034] Considering that the workpiece is prone to displacement under stress during the stamping process, which affects product quality, therefore, if Figures 1-3 As shown, a clamping assembly 8 is provided on the top of the placement table 11. The clamping assembly 8 includes upright plates 81 fixedly installed on both sides of the top of the placement table 11. An L-shaped clamping plate 82 is provided on the inner side of the upright plate 81. A threaded rod 83 is threaded on the upright plate 81. The output end of the threaded rod 83 passes through the upright plate 81 and is rotatably connected to one side of the clamping plate 82. The clamping plate 82 is slidably connected to the placement table 11. When stamping a workpiece, the workpiece to be stamped is placed on the top of the side with the lower height of the clamping plate 82. Then, the threaded rod 83 is rotated. Since the threaded rod 83 is threadedly connected to the upright plate 81, the threaded rod 83 moves inward inside the upright plate 81, pushing the clamping plate 82 to slide inward on the surface of the placement table 11, fixing the workpiece between the side walls of the two clamping plates 82, clamping and fixing the workpiece. The clamping force is adjustable, which is beneficial for clamping and fixing workpieces that do not meet the specified dimensions, preventing the workpiece from shifting during processing, causing the stamping pattern to deviate, and affecting the processing quality.

[0035] To make the sliding of the clamping plate 82 smoother, as the clamping plate 82 slides, therefore, Figure 1 and Figure 3As shown, a slider is fixedly provided at the bottom of the clamping plate 82, and a groove for the slider to slide is provided at the corresponding position on the top of the placement table 11. Rotating the threaded rod 83 drives the clamping plate 82 to move. The clamping plate 82 slides in the groove at the top of the placement table 11 through the slider at the bottom, so that the clamping plate 82 slides on the surface of the placement table 11, which facilitates the subsequent clamping and fixing of the workpiece and is beneficial for the stamping workpiece.

[0036] While the die body 4 is stamping the workpiece, in order to flatten the workpiece to be flattened by the pressure plate 6, therefore, as Figure 3 As shown, the vertical distance between the bottom of the mold body 4 and the top of the workpiece to be stamped is equal to the vertical distance between the bottom of the pressure plate 6 and the top of the workpiece to be flattened, so as to ensure the normal operation of the structure.

[0037] Considering the significant pressure exerted when the pressure plate 6 moves downwards, and the fact that the working area of ​​the pressure plate 6 is located at a low position with a certain blind spot, therefore, if Figures 1-3 As shown, a door 12 is provided on one side of the worktable 1, and shock-absorbing pads 9 are provided at the four ends of the bottom of the worktable 1. Before the stamping operation, the workpiece to be flattened is placed at the bottom of the inner cavity of the worktable 1, so that the workpiece is directly below the pressing plate 6. Then the door 12 is closed, forming a physical barrier between the pressing plate 6 and the operator, preventing the lower limbs of the human body from accidentally entering the area under the pressing plate 6, and avoiding injury to the feet or other body parts. Then the shock-absorbing pads 9 buffer and dampen the equipment, which helps to reduce the noise generated during the stamping process and reduce the impact on other floors.

[0038] In practical use, the adjustable clamping force sheet metal forming mold of this utility model places the workpiece to be stamped on the top of the side with the lower height of the clamping plate 82. Then, the threaded rod 83 is rotated. Since the threaded rod 83 is threadedly connected to the vertical plate 81, the threaded rod 83 moves inward inside the vertical plate 81, pushing the clamping plate 82 to slide inward on the surface of the placement table 11, fixing the workpiece between the side walls of the two clamping plates 82, thus clamping and fixing the workpiece. Then, the workpiece with an uneven surface to be flattened is placed at the bottom of the inner cavity of the table 1, so that the workpiece is in the pressure position. Directly below the platen 6, close the box door 12, start the cylinder 7, control the output end of the cylinder 7 to lift downward, drive the bottom mounting plate 3 to move downward, and then the mounting plate 3 drives the bottom mold body 4 to move downward, stamping the sheet metal parts. During the downward movement of the mounting plate 3, it drives the guide rod 51 and the pressure plate 6 to move downward, flattening the sheet metal parts at the bottom of the inner cavity of the table 1. At the same time, the guide rod 51 limits the mounting plate 3 in the horizontal direction, so that it moves in the vertical direction. The spring 52 is used to buffer the mold body 4.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sheet metal forming mold with adjustable clamping force, comprising a table (1), characterized in that: A placement platform (11) is fixedly installed at the center of the top of the tabletop (1). A mounting bracket (2) is installed at the top of the tabletop (1). A mounting plate (3) is slidably installed in the inner cavity of the mounting bracket (2). A mold body (4) is fixedly installed at the center of the bottom of the mounting plate (3). A guide assembly (5) is installed at the bottom of the mounting plate (3). The guide assembly (5) includes guide rods (51) fixedly installed on both sides of the bottom of the mounting plate (3). A spring (52) is installed on the surface of the guide rods (51). The guide rods (51) slide into the inner cavity of the tabletop (1) below and a pressure plate (6) is fixedly installed at the bottom. When the mounting plate (3) moves downward, it drives the guide rod (51) and the pressure plate (6) to move downward, which is used to flatten the sheet metal parts. The guide rod (51) limits the mounting plate (3) in the horizontal direction, so that it moves in the vertical direction. The spring (52) is used to buffer the mold body (4).

2. The sheet metal forming mold with adjustable clamping force according to claim 1, characterized in that: A cylinder (7) is fixedly installed on the top of the mounting bracket (2). The output end of the cylinder (7) slides into the inner cavity of the mounting bracket (2), and the bottom of the output end is fixedly connected to the top of the mounting plate (3).

3. The sheet metal forming mold with adjustable clamping force according to claim 1, characterized in that: The top of the placement platform (11) is provided with a clamping assembly (8). The clamping assembly (8) includes upright plates (81) fixedly disposed on both sides of the top of the placement platform (11). An L-shaped clamping plate (82) is disposed on the inner side of the upright plate (81). A threaded rod (83) is threaded on the upright plate (81). The output end of the threaded rod (83) passes through the upright plate (81) and is rotatably connected to one side of the clamping plate (82). The clamping plate (82) is slidably connected to the placement platform (11).

4. The sheet metal forming mold with adjustable clamping force according to claim 3, characterized in that: A slider is fixedly provided at the bottom of the clamping plate (82), and a groove for sliding the slider is provided at the corresponding position on the top of the placement platform (11).

5. The sheet metal forming mold with adjustable clamping force according to claim 1, characterized in that: The vertical distance between the bottom of the mold body (4) and the top of the workpiece to be stamped is equal to the vertical distance between the bottom of the pressure plate (6) and the top of the workpiece to be flattened, so as to ensure normal operation between the structures.

6. The sheet metal forming mold with adjustable clamping force according to claim 1, characterized in that: A door (12) is provided on one side of the tabletop (1), and shock-absorbing pads (9) are provided at the four ends of the bottom of the tabletop (1).

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