Die damage detection device
By incorporating right-angle impact sections and stress relief grooves into the mold, a mold damage detection device has been developed, which solves the quality problem of stamped parts caused by wear of right-angle stamping molds. This device enables real-time detection and early warning of mold wear, ensuring production accuracy and economic benefits.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-03
AI Technical Summary
Wear and tear on right-angle stamping dies during use can lead to uneven pressure on the back of the stamped parts, causing abnormally large angles that are difficult to detect in time. This affects the quality and production accuracy of the stamped parts and can even cause economic losses.
Design a mold damage detection device. By setting a right-angle impact part on the punch and a stress relief groove on the inner side of the die, the device uses a sensing component and a controller to realize real-time detection of wear and uses indicator lights to indicate the wear status.
It enables timely detection of mold wear, avoids the accumulation of quality problems in stamped parts, and ensures production accuracy and economic benefits.
Smart Images

Figure CN224073063U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold damage detection devices, and more specifically, to a mold damage detection device. Background Technology
[0002] Right-angle stamping dies are a type of stamping die primarily used to process sheet metal into parts with right-angle shapes. They typically consist of an upper die base, a lower die base, a punch, a die, an unloading device, and a guiding device. During operation, the press moves the upper die base downwards, causing the punch to move downwards and engage with the die fixed on the lower die base, applying pressure to the sheet metal placed between them. Under this strong pressure, the sheet metal undergoes plastic deformation, ultimately being stamped into a product with a specific right-angle shape. Right-angle stamping dies are widely used in industries such as automobile manufacturing, electronic equipment production, and hardware processing, playing a vital role in industrial production.
[0003] During the operation of right-angle stamping dies, wear at the right-angle point of the punch can trigger a series of problems affecting the quality of the stamped parts. Due to wear at the right angle, the impact force applied to the metal sheet during stamping cannot be evenly and precisely applied to the intended position, resulting in incomplete impact. This causes uneven pressure on the back of the stamped part during forming, leading to an abnormally large back radius angle. More problematic is that this increased angle at the right angle due to punch wear is difficult to detect in actual production. In mass production, minute changes in angle do not immediately show obvious differences in appearance and are often overlooked. However, as time passes and production volume increases, the angle deviation gradually accumulates, seriously affecting the assembly accuracy of the stamped part with other components and even causing economic losses to the company.
[0004] How to design a mold damage detection device to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides a mold damage detection device, which aims to improve the problems mentioned in the background.
[0006] This utility model is implemented as follows:
[0007] This utility model provides a mold damage detection device, including a die, a punch, and a controller. The punch is provided with a right-angle impact part, and the die has a stress relief groove at the inner right angle. The controller is provided with an indicator light and a knob. A sensing component is provided at the bottom of the die. The sensing component includes a housing fixedly connected to the inner side of the die. A trigger rod is provided at the top of the housing. A contact plate is fixedly connected to the bottom of the trigger rod. A first spring is fixedly connected to the bottom of the contact plate. A fixing ring is fixedly connected to the bottom of the first spring. The fixing ring is fixedly connected to the inner wall of the housing. A threaded sleeve is provided on the inner wall of the housing. A limit plate is fixedly connected to the top of the threaded sleeve. A conductive rod is slidably arranged inside the limit plate. A second spring is sleeved on the outer wall of the conductive rod. A support plate is fixedly connected to the bottom of the second spring. The support plate is fixedly connected to the conductive rod. The conductive rod is located inside the fixing ring and is not in contact with the contact plate.
[0008] Preferably, the inner side of the outer shell is connected to the threaded sleeve by a threaded engagement.
[0009] Preferably, the concave die is located below the convex die, and the right-angle impact portion corresponds to the position of the stress relief groove.
[0010] Preferably, the outer side wall of the housing is fixedly connected to a plurality of mounting seats, and the mounting seats are fixedly connected to the bottom of the die by screws.
[0011] Preferably, a connecting seat is fixedly connected to the bottom of the threaded sleeve, a motor is fixedly connected to the bottom inner wall of the outer shell, an output shaft is provided at the output end of the motor, and the top end of the output shaft is fixedly connected to the connecting seat.
[0012] Preferably, the bottom of the contact plate is provided with a contact point, the trigger rod passes through the top of the housing, the contact plate is located inside the housing, and the trigger rod is located inside the stress relief groove.
[0013] Preferably, the knob is electrically connected to the motor, and the bottom of the contact and the conductive rod is electrically connected between the indicator light and the external power source.
[0014] The beneficial effects of this utility model are as follows: the action of the right-angle impact part pressing the stamped part causes the contact plate to contact the conductive rod, and the indicator light illuminates, indicating that the stamping equipment is in normal working condition. If the right-angle impact part gradually wears down, the pressing distance of the stamped part to the trigger rod becomes shorter, causing the contact plate to be unable to effectively contact the conductive rod, so that the indicator light cannot be illuminated in a single impact, thus reminding that the mold has significant wear and that the wear condition of the right-angle impact part needs to be checked, thereby realizing the process of mold damage detection. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the controller structure of a mold damage detection device provided by an embodiment of this utility model;
[0017] Figure 2 This is a schematic diagram showing the location of the outer shell of a mold damage detection device according to an embodiment of this utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of the housing of a mold damage detection device provided by an embodiment of this utility model;
[0019] Figure 4 This is a schematic diagram of the trigger rod position of a mold damage detection device provided by an embodiment of this utility model.
[0020] In the diagram: 1. Die; 2. Punch; 3. Controller; 4. Right-angle impact part; 5. Stress relief groove; 6. Indicator light; 7. Knob; 8. Housing; 9. Mounting base; 10. Trigger rod; 11. Contact plate; 12. Contact point; 13. First spring; 14. Fixing ring; 15. Limiting plate; 16. Support plate; 17. Conductive rod; 18. Second spring; 19. Threaded sleeve; 20. Connecting seat; 21. Output shaft; 22. Motor. Detailed Implementation
[0021] 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. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] Example, refer to Figures 1-4A mold damage detection device includes a die 1, a punch 2, and a controller 3. The punch 2 has a right-angle impact part 4. The die 1 has a stress relief groove 5 at its inner right-angle location. The controller 3 has an indicator light 6 and a knob 7. A sensing component is located at the bottom of the die 1. The sensing component includes a housing 8 fixedly connected to the inner side of the die 1. A trigger rod 10 is located at the top of the housing 8. A contact plate 11 is fixedly connected to the bottom of the trigger rod 10. A first spring 13 is fixedly connected to the bottom of the contact plate 11. A fixing ring 14 is fixedly connected to the bottom, and the fixing ring 14 is fixedly connected to the inner wall of the outer shell 8. A threaded sleeve 19 is provided on the inner wall of the outer shell 8. A limiting plate 15 is fixedly connected to the top of the threaded sleeve 19. A conductive rod 17 is slidably arranged inside the limiting plate 15. A second spring 18 is sleeved on the outer wall of the conductive rod 17. A support plate 16 is fixedly connected to the bottom end of the second spring 18. The support plate 16 is fixedly connected to the conductive rod 17. The conductive rod 17 is located inside the fixing ring 14 and is not in contact with the contact plate 11.
[0023] The inner side of the outer casing 8 is connected to the threaded sleeve 19 by a threaded engagement. The concave mold 1 is located below the convex mold 2. The right-angle impact part 4 corresponds to the stress relief groove 5. Multiple mounting seats 9 are fixedly connected to the outer side wall of the outer casing 8. The mounting seats 9 are fixedly connected to the bottom of the concave mold 1 by screws. A connecting seat 20 is fixedly connected to the bottom of the threaded sleeve 19. A motor 22 is fixedly connected to the bottom inner side wall of the outer casing 8. An output shaft 21 is provided at the output end of the motor 22. The top end of the output shaft 21 is fixedly connected to the connecting seat 20. A contact point 12 is provided at the bottom of the contact plate 11. A trigger rod 10 passes through the top of the outer casing 8. The contact plate 11 is located inside the outer casing 8. The trigger rod 10 is located inside the stress relief groove 5. The knob 7 is electrically connected to the motor 22. The bottom end of the contact point 12 and the conductive rod 17 are electrically connected between the indicator light 6 and the external power supply.
[0024] The working principle of this mold damage detection device is as follows: The controller 3 is installed in an easily observable position. The stamping part is placed between the die 1 and the punch 2. By controlling the punch 2 to move towards the die 1, the right-angle impact part 4 punches the stamping part, making the stamping part into a right-angle shape. During this process, the stamping part is pressed against the trigger rod 10 located inside the stress relief groove 5. The trigger rod 10 presses against the contact plate 11, so that the contact plate 11 overcomes the elastic force of the first spring 13 and contacts the conductive rod 17, so that the contact point 12 and the conductive rod 17 are in an electrically connected state, so that the indicator light 6 forms a power-conducting circuit with the external power supply, and the indicator light 6 lights up. At this time, the indicator light 6 will light up once every time the stamping equipment is used, indicating that the stamping equipment is in a normal working state.
[0025] If the right-angle impact part 4 gradually wears down due to prolonged use, changing from a right angle to a rounded corner, the impact of the right-angle impact part 4 on the stamped part will not reach the initial state. This will cause the rounded corner of the right-angle position of the stamped part to increase, and the pressing distance of the trigger rod 10 to become shorter. As a result, the contact plate 11 cannot effectively contact the conductive rod 17, and the indicator light 6 cannot be lit up during a single impact. This indicates that the mold has significant wear and the wear condition of the right-angle impact part 4 needs to be checked.
[0026] It should be noted that rotating the knob 7 controls the rotation of the motor 22, which in turn drives the connecting seat 20 and the threaded sleeve 19 to rotate via the output shaft 21. This causes the threaded sleeve 19 to move along the length of the outer casing 8, which in turn moves the conductive rod 17. This allows the distance between the conductive rod 17 and the contact plate 11 to be adjusted, making it convenient for staff to adjust the status of the indicator light 6 according to the wear condition.
[0027] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.
[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A mold damage detection device, comprising a die (1), a punch (2), and a controller (3), characterized in that, The punch (2) is provided with a right-angle impact part (4), and the inner right angle of the die (1) is provided with a stress relief groove (5). The controller (3) is provided with an indicator light (6) and a knob (7). The bottom of the die (1) is provided with a sensing component. The sensing component includes a housing (8) fixedly connected to the inner side of the die (1). The top of the housing (8) is provided with a trigger rod (10). The bottom of the trigger rod (10) is fixedly connected with a contact plate (11). The bottom of the contact plate (11) is fixedly connected with a first spring (13). The bottom of the first spring (13) is fixedly connected with a retaining ring (14). The fixing ring (14) is fixedly connected to the inner wall of the outer shell (8). The inner wall of the outer shell (8) is provided with a threaded sleeve (19). The top of the threaded sleeve (19) is fixedly connected to a limiting plate (15). A conductive rod (17) is slidably arranged inside the limiting plate (15). A second spring (18) is sleeved on the outer wall of the conductive rod (17). A support plate (16) is fixedly connected to the bottom end of the second spring (18). The support plate (16) is fixedly connected to the conductive rod (17). The conductive rod (17) is located inside the fixing ring (14). The conductive rod (17) is not in contact with the contact plate (11).
2. The mold damage detection device according to claim 1, characterized in that, The inner side of the outer shell (8) is connected to the threaded sleeve (19) by a threaded engagement.
3. The mold damage detection device according to claim 1, characterized in that, The concave die (1) is located below the convex die (2), and the right-angle impact part (4) corresponds to the position of the stress relief groove (5).
4. The mold damage detection device according to claim 1, characterized in that, The outer side wall of the outer shell (8) is fixedly connected with a plurality of mounting seats (9), which are fixedly connected to the bottom of the die (1) by screws.
5. The mold damage detection device according to claim 1, characterized in that, The bottom of the threaded sleeve (19) is fixedly connected to a connecting seat (20), and the bottom inner wall of the outer shell (8) is fixedly connected to a motor (22). The output end of the motor (22) is provided with an output shaft (21), and the top end of the output shaft (21) is fixedly connected to the connecting seat (20).
6. The mold damage detection device according to claim 1, characterized in that, The bottom of the contact plate (11) is provided with a contact point (12), the trigger rod (10) passes through the top of the outer shell (8), the contact plate (11) is located inside the outer shell (8), and the trigger rod (10) is located inside the stress relief groove (5).
7. The mold damage detection device according to claim 6, characterized in that, The knob (7) is electrically connected to the motor (22), and the bottom of the contact (12) and the conductive rod (17) is electrically connected between the indicator light (6) and the external power source.