Punching die structure

Abstract

The utility model discloses a stamping die structure improves the die and realizes the edge covering of the frame of backboard through the stamping process without burr. The stamping die structure comprises a lower die seat; the upper surface of the lower die seat is provided with horizontally movable frame support blocks, which are used for cooperating with the upper die to stamp the frame of a product in a stamping process; opposite surfaces of the frame support blocks are provided with compacting driving devices, and the compacting driving devices drive the pressing blocks to move horizontally; the compacting driving devices are provided below with side punch driving devices, and the side punch driving devices drive the side punch blocks to move horizontally; the height difference between the upper surface of the side punch block and the lower surface of the frame support block is set as the thickness of the product; the lower surface of the frame support block is provided with a lower punch driving device, and the lower punch driving device drives a lower punch block to move up and down; when the lower punch block and the pressing block are at the limit stroke, the horizontal distance between them is not less than twice the thickness of the product.

Description

Technical Field

[0001] This utility model belongs to the field of stamping backplate technology, and specifically refers to a stamping die structure. Background Technology

[0002] In the existing technology, the back panels of large-screen display devices such as televisions and computer monitors are mainly produced by stamping. The corresponding holes, slots and other structures can be stamped according to the pre-designed structure to facilitate the installation of other modules and meet some functional requirements of the display device.

[0003] Typically, a metal sheet larger than the product size is used as the base material for stamping. After stamping, burrs inevitably remain at the edges and corners, affecting product quality and appearance. Current practice involves binding the edges of the back panel with plastic to cover the stamped edges and prevent exposure. However, this method complicates the production process, and the plastic binding material also faces issues such as insufficient strength. Utility Model Content

[0004] The main purpose of this utility model is to provide a stamping die structure to solve the problems existing in the prior art. By improving the die, the edge of the back plate is formed without burrs through stamping process.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A stamping die structure includes a lower die base; a horizontally movable frame support block is provided on the upper surface of the lower die base for stamping the frame of a product in conjunction with an upper die during the stamping process; a pressing drive device and a pressure block driven by the pressing drive device to move horizontally are provided on the opposite side of the frame support block; a side punch drive device and a side punch block driven by the side punch drive device to move horizontally are provided below the pressing drive device; the height difference between the upper surface of the side punch block and the lower surface of the frame support block is set as the thickness of the product; a lower punch drive device and a lower punch block driven by the lower punch drive device to move vertically are provided below the frame support block, and the horizontal distance between the lower punch block and the pressure block at their limit stroke is not less than twice the thickness of the product.

[0007] The pressing drive device, the side punch drive device, and the bottom punch drive device are all mounted on the lower die base. The lower die base is provided with a groove that is opposite to the edge of the product. The edge support block is horizontally movable and fits into the inner side of the groove. The pressing drive device and the side punch drive device are mounted on the outer side of the groove, and the bottom punch drive device is mounted at the bottom of the groove.

[0008] The pressing drive device, the side punch drive device, and the downward punch drive device are one of the following: a cylinder, a hydraulic cylinder, or a motor.

[0009] An electromagnet is provided on the upper surface of the lower mold base; the frame support block is made of metal material; a guide post is provided between the electromagnet and the frame support block, one end of the guide post is fixedly connected to the frame support block, and the other end is movably inserted through the electromagnet, and a spring is sleeved on the circumference of the guide post, with the two ends of the spring abutting against the frame support block and the electromagnet respectively.

[0010] The side punch and the lower punch have an upper inclined surface and a side inclined surface respectively on their punching surfaces.

[0011] After adopting the above technical solution, the present invention has the following technical effects:

[0012] The structure of this utility model can be applied to the post-processing of the upper and lower dies of the stamping equipment after they are closed, so as to reprocess the edge of the product to achieve a seamless stamping of the edge of the edge material with a rounded chamfer. This makes the edge of the metal stamping back plate no longer exposed, but is contained in the inner wall of the edge. This can increase the thickness of the edge to improve strength, optimize the product appearance, and avoid burrs. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0014] Figure 2 This is a schematic diagram of the side stamping process in a specific embodiment of the present invention.

[0015] Figure 3 This is a schematic diagram of the lower stamping process in a specific embodiment of the present invention.

[0016] Explanation of icon numbers:

[0017] 1-Lower mold base; 11-Groove; 2-Frame support block; 3-Clamping drive device; 4-Pressure block; 5-Side punch drive device; 6-Side punch block; 61-Upper inclined surface; 7-Lower punch drive device; 8-Lower punch block; 81-Side inclined surface; 9-Electromagnet; 10-Guide post; 20-Spring;

[0018] a-Product; b-Border; c-Bevel; d-Flange;

[0019] D - Horizontal spacing; H - Height difference. Detailed Implementation

[0020] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0021] refer to Figure 1-3 As shown, this utility model discloses a stamping die structure, including a lower die base 1; the upper surface of the lower die base 1 is provided with a horizontally movable frame support block 2, which is used to cooperate with the upper die to stamp and form the frame b of product a in the stamping process.

[0022] A clamping drive device 3 is provided on the opposite side of the frame support block 2, and a pressure block 4 is driven by the clamping drive device 3 to move horizontally;

[0023] Below the pressing drive device 3 is a side punch drive device 5, and a side punch block 6 driven by the side punch drive device 5 to move horizontally; the height difference H between the upper surface of the side punch block 6 and the lower surface of the frame support block 2 is set to the thickness of product a.

[0024] Below the frame support block 2, there is a lower punch drive device 7 and a lower punch block 8 driven by the lower punch drive device 7 to move up and down. The horizontal distance D between the lower punch block 8 and the pressure block 4 when they are at their limit stroke is not less than twice the thickness of product a.

[0025] Through the above solution, the structure of this utility model can be applied to the subsequent process after the upper and lower dies of the stamping equipment are closed, and the frame b of product a is reprocessed to achieve the integral stamping of a flange d with a smooth chamfer c on the material edge of the frame b, so that the material edge of the metal stamping back plate is no longer exposed, but is contained in the inner wall of the frame b. This can increase the thickness of the frame b to improve its strength, optimize the product appearance, and avoid burrs from being exposed.

[0026] Specifically, refer to Figure 2 As shown, in this subsequent process, the side punch is performed first: the lower punch drive device 7 retracts the lower punch block 8 to avoid the impact, the pressing drive device 3 drives the pressing block 4 to cooperate with the frame support block 2 to clamp the frame b, and the side punch drive device 5 drives the side punch block 6 to move horizontally to punch the material edge of the frame b, forming a 90° flange d; then the lower punch is performed: the side punch drive device 5 retracts the side punch block 6 to avoid the impact, the pressing drive device 3 continues to drive the pressing block 4 to maintain the limit stroke, thereby supporting the outer wall of the frame b, and the lower punch drive device 7 drives the lower punch block 8 to push upward to punch the flange d, punching the 90° flange d into 180°, parallel to the inner wall of the frame b.

[0027] The following are specific embodiments of the present invention.

[0028] The aforementioned pressing drive device 3, side punch drive device 5, and bottom punch drive device 7 are all installed on the lower die base 1. The lower die base 1 is provided with a groove 11 that is opposite to the position of the frame b of product a. The frame support block 2 is horizontally movably fitted on the inner side of the groove 11. The pressing drive device 3 and the side punch drive device 5 are installed on the outer side of the groove 11, and the bottom punch drive device 7 is installed at the bottom of the groove 11.

[0029] The aforementioned pressing drive device 3, side punch drive device 5, and downward punch drive device 7 can be devices such as cylinders, hydraulic cylinders, or motors that can output linear reciprocating motion. Cylinders are preferred as they provide fast punching speed and high force.

[0030] An electromagnet 9 is provided on the upper surface of the lower mold base 1. The frame support block 2 is made of metal, which ensures both strength and allows it to be attracted by the electromagnet 9 when it is energized. A guide post 10 is provided between the electromagnet 9 and the frame support block 2. One end of the guide post 10 is fixedly connected to the frame support block 2, and the other end is movably inserted through the electromagnet 9. A spring 20 is sleeved on the circumference of the guide post 10, and the two ends of the spring 20 abut against the frame support block 2 and the electromagnet 9, respectively. Thus, when the electromagnet 9 is not energized, the frame support block 2 is pushed out by the action of the spring 20, thereby supporting the inner wall of the frame b. When the electromagnet 9 is energized, the frame support block 2 is attracted back by magnetic attraction, providing clearance for the movement of the lower punch block 8.

[0031] The stamping surfaces of the aforementioned side punch 6 and lower punch 8 are respectively provided with an upper inclined surface 61 and a side inclined surface 81. By providing the upper inclined surface 61 / side inclined surface 81, the deformation of the material can be guided when the side punch 6 / lower punch 8 comes into contact with the material edge of the frame b, resulting in higher stamping quality.

[0032] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A stamping die structure, characterized in that: Includes a lower die base; the upper surface of the lower die base is provided with a horizontally movable frame support block, which is used to cooperate with the upper die to stamp the frame of the product during the stamping process; The opposite side of the frame support block is provided with a pressing drive device and a pressing block that is driven by the pressing drive device to move horizontally. Below the pressing drive device is a side punch drive device, and a side punch block that is driven by the side punch drive device to move horizontally; the height difference between the upper surface of the side punch block and the lower surface of the frame support block is set as the thickness of the product. Below the frame support block is a lower punch drive device and a lower punch block that is driven by the lower punch drive device to move up and down. The horizontal distance between the lower punch block and the pressure block when they are at their limit stroke is not less than twice the product thickness.

2. The stamping die structure as described in claim 1, characterized in that: The pressing drive device, the side punch drive device, and the bottom punch drive device are all mounted on the lower die base. The lower die base is provided with a groove that is opposite to the edge of the product. The edge support block is horizontally movable and fits into the inner side of the groove. The pressing drive device and the side punch drive device are mounted on the outer side of the groove, and the bottom punch drive device is mounted at the bottom of the groove.

3. The stamping die structure as described in claim 1, characterized in that: The pressing drive device, the side punch drive device, and the downward punch drive device are one of the following: a cylinder, a hydraulic cylinder, or a motor.

4. The stamping die structure as described in claim 1, characterized in that: An electromagnet is provided on the upper surface of the lower mold base; the frame support block is made of metal material; a guide post is provided between the electromagnet and the frame support block, one end of the guide post is fixedly connected to the frame support block, and the other end is movably inserted through the electromagnet, and a spring is sleeved on the circumference of the guide post, with the two ends of the spring abutting against the frame support block and the electromagnet respectively.

5. The stamping die structure as described in claim 1, characterized in that: The side punch and the lower punch have an upper inclined surface and a side inclined surface respectively on their punching surfaces.

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