Stamping die safety reset dual-protection structure

Abstract

The utility model discloses a dual-protection structure for safe reset of a stamping die, which relates to the technical field of stamping dies and comprises a lower die holder, an upper die holder, a slider I, a slider II, a photoelectric sensor and the like. The first sliding block and the second sliding block are connected to the lower die base in a sliding mode, the inclined face driving structure is used for pushing the sliding blocks to be close to the forming die core to clamp a blank when the upper die base moves downwards, and after stamping is completed, the sliding block forced pulling-back structure pulls the sliding blocks to be away from the forming die core to relieve fixation. The photoelectric sensor monitors the return state of the sliding block and communicates with the press start-stop switch, and it is ensured that the press automatically stops when the sliding block does not return. The structure realizes real-time monitoring and dual protection of the die state, effectively solves the problem of product and die damage caused by non-return of the sliding block, has the advantages of simple structure, low manufacturing cost, convenience in maintenance, remarkable protection effect and the like, is suitable for the field of stamping dies, and improves the production safety and the product quality.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically a dual protection structure for safe reset of stamping dies. Background Technology

[0002] In the field of stamping dies, the safe reset of the die and the stable clamping of the blank are crucial to ensuring product quality and production safety. Traditional stamping dies typically rely on a single reset mechanism to ensure accurate reset after stamping, but this design often presents safety hazards. Especially during continuous production, factors such as nitrogen depletion, wear or damage to parts can cause the reset mechanism to malfunction, resulting in the slide not returning to its proper position and consequently damaging the product and the die.

[0003] To address this issue, some improved stamping dies have emerged on the market, attempting to enhance their safety and stability by adding extra protective structures. However, these protective structures are often complex, increasing manufacturing costs and maintenance difficulties, and their protective effectiveness is limited in practical applications. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a dual-protection structure for the safe reset of stamping dies, thus solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a double protection structure for safe reset of stamping die, including a lower die base and an upper die base, wherein the upper part of the lower die base is slidably connected to slider one and slider two, and the upper die base, slider one, and slider two are jointly provided with an inclined surface driving structure and a slider forced pull-back structure.

[0006] Furthermore, the inclined surface driving structure includes a lower inclined surface reserved on the opposite end faces of slider one and slider two, and a driving block installed at the bottom of the upper mold base. The bottom end of the driving block is reserved with an upper inclined surface that matches the lower inclined surface.

[0007] Furthermore, an upper mold stop plate is installed at the bottom of the upper mold base, and a through hole is reserved inside the upper mold stop plate. The driving block extends to the bottom of the upper mold stop plate through the through hole.

[0008] Furthermore, the slider forced pull-back structure includes return hooks installed on both sides of slider one and slider two, and a drive groove reserved at the bottom of the drive block, wherein the drive groove and the return hooks are arranged perpendicular to each other.

[0009] Furthermore, a forming mold core is installed on the upper part of the lower mold base, and slider one and slider two are located on both sides of the forming mold core, and their shapes are adapted to the forming mold core.

[0010] Furthermore, a pressure plate is mounted on the bottom end of the upper mold base via an upper mold gas spring. The pressure plate is located directly above the forming mold core and is adapted to the shape of the forming mold core.

[0011] Furthermore, a photoelectric sensor is installed on the upper part of the lower mold base and near the position of slider one. The photoelectric sensor is installed at the return position of slider one and slider two.

[0012] This invention provides a dual-protection structure for the safe reset of a stamping die. Compared with the prior art, it has the following advantages:

[0013] This stamping die features a dual-protection structure for safe reset. By sliding sliders one and two on the lower die base, and incorporating a ramp drive structure and a slider forced pull-back structure between the upper die base and the sliders, it achieves stable clamping of the workpiece and safe die reset. During stamping, the ramp drive structure simultaneously pushes the slider closer to the forming die core, clamping and constraining the workpiece. After stamping, the slider forced pull-back structure pulls the slider away from the forming die core, releasing the fixation on the formed product. Furthermore, the structure includes a photoelectric sensor to monitor the slider's return position, thus enabling automatic press shutdown protection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of sliders one and two in this utility model;

[0016] Figure 3 This is a structural schematic diagram of the upper mold base from the bottom view of this utility model;

[0017] Figure 4 This is a schematic diagram of the assembly structure of this utility model.

[0018] In the diagram: 1. Lower mold base; 11. Molding mold core; 12. Slider 1; 13. Slider 2; 14. Photoelectric sensor; 15. Lower inclined surface; 16. Return hook; 2. Upper mold base; 21. Upper mold stop plate; 22. Upper mold gas spring; 23. Pressure plate; 24. Drive block; 25. Upper inclined surface; 26. Drive groove. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a double protection structure for safe reset of a stamping die, including a lower die base 1 and an upper die base 2. The upper part of the lower die base 1 is slidably connected to slider 12 and slider 2 13 respectively. The upper die base 2 and slider 12 and slider 2 13 are jointly provided with an inclined surface driving structure and a slider forced pull-back structure. During the downward movement of the upper die base 2, the inclined surface driving structure can simultaneously push slider 12 and slider 2 13 closer to the forming die core 11, and finally fix the blank on the forming die core 11 together. During the upward movement of the upper die base 2, the slider 12 and slider 2 13 can be pulled away from the forming die core 11, releasing the fixation of the formed product. A photoelectric sensor 14 is installed on the upper part of the lower die base 1 and near the position of slider 12.

[0021] The upper part of the lower mold base 1 is equipped with the forming mold core 11. Slide 1 12 and slide 2 13 are located on both sides of the forming mold core 11, and the shapes of slide 1 12 and slide 2 13 are adapted to the forming mold core 11. The top heights of slide 1 12 and slide 2 13 are the same and are higher than the top height of the forming mold core 11. In this way, when slide 1 12 and slide 2 13 are close to the forming mold core 11, they can clamp and constrain the blank placed on the upper part of the forming mold core 11.

[0022] The bottom end of the upper mold base 2 is equipped with an upper mold stop plate 21. An upper mold gas spring 22 is installed inside the upper mold stop plate 21. The telescopic end of the upper mold gas spring 22 extends to the lower part of the upper mold stop plate 21 and is equipped with a pressure plate 23. The pressure plate 23 is located directly above the forming mold core 11 and is adapted to the shape of the forming mold core 11. The pressure plate 23 can press the blank placed on the upper part of the forming mold core 11 in the vertical direction.

[0023] The inclined surface drive structure includes a lower inclined surface 15 reserved on the opposite end faces of slider 12 and slider 23, a drive block 24 installed at the bottom of the upper mold base 2, and an upper inclined surface 25 reserved on the bottom of the drive block 24. The upper mold stop plate 21 has a through hole reserved inside, which allows the bottom end of the drive block 24 with the upper inclined surface 25 to extend to the bottom of the upper mold stop plate 21. The lower inclined surface 15 is located directly below the upper inclined surface 25, and the inclined surface angle of the lower inclined surface 15 is matched with that of the upper inclined surface 25.

[0024] The slider forced pull-back structure includes return hooks 16 installed on both sides of slider 12 and slider 23, and a drive groove 26 reserved in the bottom of the drive block 24. The drive groove 26 and the return hooks 16 are set on the same side and are perpendicular to each other.

[0025] The photoelectric sensor 14 is installed at the return position of slider 12 and slider 23 (the specific structure and detection principle of the photoelectric sensor 14 are existing known technologies and will not be described in detail here). During the upward movement of the upper mold base 2, the photoelectric sensor 14 can monitor whether slider 12 and slider 23 are forcibly pulled back by the drive groove 26 and the return hook 16. The photoelectric sensor 14 is also connected to the start / stop switch of the press (not shown in the figure). That is to say, if slider 12 and slider 23 are not pulled back by the drive groove 26 and the return hook 16, the photoelectric sensor 14 will not detect slider 12 and slider 23. At this time, it will send this signal to the start / stop switch of the press, and the entire press will automatically stop.

[0026] When the stamping die is in operation, the blank is placed on the upper part of the forming die core 11. Then, the press drives the upper die holder 2, upper die stop plate 21, upper die gas spring 22, pressure plate 23, and drive block 24 to move downwards as a whole. When the lower surface of the pressure plate 23 contacts the upper surface of the blank, the pressure plate 23 applies a downward force to the blank, continuing its downward movement. Because of the presence of the upper die gas spring 22, its extension end contracts, ensuring that while the height of the pressure plate 23 remains unchanged, the upper die holder 2, upper die stop plate 21, upper die gas spring 22, and drive block 24 can still move downwards as a whole. During the movement, the drive block 24 will rely on the inclined surface structure of the upper inclined surface 25 and the lower inclined surface 15 to squeeze the slider 12 and slider 23 to move closer to the forming mold core 11. When it moves to the lowest position, the slider 12 and slider 23 can just form a clamping constraint effect on both sides of the blank. That is to say, the blank is constrained in four directions at this time, which is convenient for stamping. The specific stamping process and stamping structure are existing known technologies and will not be described in detail here. When the pressing is in place, the upper part of the return hook 16 is located in the drive groove 26 to prepare for the forced pull-back of the slider 12 and slider 2 13.

[0027] After the stamping of the blank is completed, the blank becomes a formed product. At this time, the press will drive the upper die holder 2, the upper die stop plate 21, the upper die gas spring 22, the pressure plate 23 and the drive block 24 to move upward as a whole. At the moment of upward movement, because the upper part of the return hook 16 is still in the drive groove 26, it will pull the return hook 16 away from the drive groove 26. During this process, because the drive groove 26 and the return hook 16 are set perpendicular to each other, a horizontal component force will be generated during the upward pulling process, causing the return hook 16, slider 12 and slider 2 13 to be pulled outward as a whole. That is to say, slider 12 and slider 2 13 are forcibly pulled apart, releasing the horizontal constraint on the formed product. This is the first layer of protection. The second layer of protection is the setting of the photoelectric sensor 14. As mentioned above, the photoelectric sensor 14 can detect whether slider 12 and slider 2 13 have returned to their original positions, and if they have not returned, it will stop the press.

[0028] This dual structure solves the problem of products and molds being damaged during production due to factors such as nitrogen exhaustion, damage, and parts wear, which prevent the slider from returning to its original position.

Claims

1. A dual-protection structure for safe reset of a stamping die, comprising a lower die holder (1) and an upper die holder (2), characterized in that: The upper part of the lower mold base (1) is slidably connected to slider one (12) and slider two (13). The upper mold base (2) is provided with a slope driving structure and a slider forced pull-back structure together with slider one (12) and slider two (13).

2. The dual protection structure for safe reset of stamping dies according to claim 1, characterized in that: The inclined surface driving structure includes a lower inclined surface (15) reserved on the opposite end face of slider one (12) and slider two (13), and a driving block (24) installed at the bottom of the upper mold base (2). The bottom of the driving block (24) is reserved with an upper inclined surface (25) adapted to the lower inclined surface (15).

3. The dual protection structure for safe reset of stamping dies according to claim 2, characterized in that: The upper mold base (2) is equipped with an upper mold stop plate (21) at its bottom end. The upper mold stop plate (21) has a through hole reserved inside. The driving block (24) extends through the through hole to the bottom of the upper mold stop plate (21).

4. The dual protection structure for safe reset of stamping dies according to claim 1, characterized in that: The slider forced pull-back structure includes return hooks (16) installed on both sides of slider one (12) and slider two (13), and a drive groove (26) reserved at the bottom of the drive block (24). The drive groove (26) and the return hooks (16) are perpendicular to each other.

5. The dual protection structure for safe reset of stamping dies according to claim 1, characterized in that: The upper part of the lower mold base (1) is equipped with a forming mold core (11), and the slider one (12) and slider two (13) are located on both sides of the forming mold core (11), and their shapes are adapted to the forming mold core (11).

6. The dual protection structure for safe reset of stamping dies according to claim 1, characterized in that: The bottom end of the upper mold base (2) is equipped with a pressure plate (23) via an upper mold gas spring (22). The pressure plate (23) is located directly above the forming mold core (11) and is adapted to the shape of the forming mold core (11).

7. The dual protection structure for safe reset of stamping dies according to claim 1, characterized in that: A photoelectric sensor (14) is installed on the upper part of the lower mold base (1) and near the position of slider one (12). The photoelectric sensor (14) is installed at the return position of slider one (12) and slider two (13).

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