In-mold riveting press die capable of automatically detecting pressure magnitude

Abstract

This utility model relates to the field of automotive mold technology, specifically to an in-mold riveting stamping mold with automatic pressure detection. It includes a base, an upper mold assembly, a lower mold assembly, rivets, and sheet metal. The lower mold assembly is located on top of the base, and the upper mold assembly is located on top of the lower mold assembly. A pressure detection component is located between the upper and lower mold assemblies. The pressure detection component includes a load cell, a fixed base, and a mounting plate. The fixed base is located at the bottom of the mounting plate, and the load cell is bolted to the bottom of the mounting plate. The upper mold assembly includes an upper mold base, and a first nitrogen spring is located at the bottom of the upper mold base, which is situated at the top of the mounting plate. By adding an automatic pressure detection mechanism, and by real-time detection of the riveting force during in-mold riveting, defective products can be detected promptly, and potential insufficient pressure in the mold can be monitored, preventing the generation of more defective products and thus improving the overall performance.

Description

Technical Field

[0001] This utility model relates to the field of automotive mold technology, specifically to an in-mold riveting stamping mold that automatically detects pressure. Background Technology

[0002] With the diversification of automobiles and the increasing variety of customer demands, automobile costs are decreasing and production costs are becoming more focused on. Riveting technology avoids complex welding processes and simplifies production. In-mold riveting is a cold-working process that uses mechanical force to permanently connect workpieces through intermediate connecting parts (such as rivets). It is used in the processing of automobile body structural parts, interior parts, and other components, such as door panels, frames, and seat frames. Various hardware parts are connected and fixed by in-mold riveting stamping dies, thereby improving the production efficiency and quality of automobile parts.

[0003] Currently, the use of in-mold riveting stamping dies lacks an automatic pressure detection mechanism. During the riveting process, insufficient pressure can result from spring leakage, damage, or other reasons, leading to a series of problems such as uneven rivet expansion, unstable upsetting head dimensions, and cracking in the riveted products. Therefore, an in-mold riveting stamping die with automatic pressure detection is proposed. This mechanism allows for real-time detection of the riveting force during in-mold riveting, enabling the timely detection of defective products and monitoring for potential insufficient pressure issues in the die. This prevents the generation of more defective products and improves the overall performance. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides an in-mold riveting stamping die that automatically detects the pressure, so as to detect the riveting force during in-mold riveting in real time, and to detect defective products in a timely manner, thereby improving the use effect.

[0005] The technical solution adopted by this utility model to solve its technical problem is an in-mold riveting stamping die that automatically detects the pressure, including a base, an upper die assembly, a lower die assembly, rivets and sheet metal. The lower die assembly is provided on the top of the base, the upper die assembly is provided on the top of the lower die assembly, and a pressure detection assembly is provided between the upper die assembly and the lower die assembly.

[0006] The pressure detection assembly includes a load cell, a fixed base, and a mounting plate. The fixed base is disposed at the bottom of the mounting plate, and the load cell is connected to the bottom of the mounting plate by bolts.

[0007] The upper mold assembly includes an upper mold base, a first nitrogen spring is provided at the bottom of the upper mold base located at the top of the mounting plate, a top block corresponding to the weighing sensor is sleeved inside the fixed base, and a second nitrogen spring is provided inside the fixed base located around the top block.

[0008] By adopting the above technical solution and adding an automatic pressure detection mechanism, defective products can be detected in a timely manner by detecting the riveting force in real time.

[0009] Specifically, a pressure plate is provided at the bottom of the second nitrogen spring, and an upper clamping plate insert is provided at the bottom of the top block inside the fixed base. A rivet punch is fixedly provided at the bottom of the upper clamping plate insert, and a guide pin is provided at the bottom of the rivet punch.

[0010] Specifically, an inner guide sleeve is provided on the inner side of the fixing base, and an inner guide post is sleeved inside the inner guide sleeve, with the top of the inner guide post fixedly connected to the bottom of the mounting plate.

[0011] Specifically, there are multiple guide pins symmetrically distributed at the bottom of the pressure plate for positioning the sheet material.

[0012] Specifically, the weighing sensor includes a wire, and the weighing sensor is electrically connected to an external display device through the wire to display the riveting pressure detection value in real time.

[0013] Specifically, the top of the upper die base has a mounting hole for connecting the stamping equipment, and the bottom of the base has a mounting groove for fixing to the worktable.

[0014] Specifically, the contact surface between the top block and the load cell is a plane, which is used to evenly transmit the pressure during riveting through the top block to the load cell.

[0015] Specifically, the lower mold assembly includes a lower mold base, and the top of the lower mold base is connected to the lower mold core by bolts.

[0016] Specifically, the base includes a PLC controller.

[0017] The beneficial effects of this utility model are:

[0018] The in-mold riveting stamping die with automatic pressure detection described in this utility model adds an automatic pressure detection mechanism by setting a base, guide pin, rivet punch, ejector block and weighing sensor. During in-mold riveting processing, by detecting the riveting force in real time, defective products can be detected in time, and the die can be monitored for possible insufficient pressure, preventing the generation of more defective products, thereby improving the quality of die use and enhancing the effect of use. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2This is a cross-sectional structural diagram of the present invention;

[0022] Figure 3 This is a cross-sectional view of the pressure detection component of this utility model;

[0023] In the diagram: 1. Base; 2. Upper mold assembly; 201. Upper mold base; 202. Upper clamping plate insert; 203. Pressure plate; 204. Guide pin; 205. Rivet punch; 206. First nitrogen spring; 207. Second nitrogen spring; 208. Inner guide post; 209. Inner guide sleeve; 210. Ejector block; 3. Lower mold assembly; 301. Lower mold base; 302. Lower mold core; 4. Pressure detection assembly; 401. Weighing sensor; 402. Fixing base; 403. Mounting plate; 5. Rivet; 6. Material sheet. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] To facilitate real-time monitoring of the riveting force during in-mold riveting, defective products can be detected promptly, thereby improving the overall performance. Figure 1-3 As shown, the in-mold riveting stamping die for automatically detecting pressure according to this utility model includes a base 1, an upper die assembly 2, a lower die assembly 3, rivets 5 and a sheet 6. The lower die assembly 3 is provided on the top of the base 1, the upper die assembly 2 is provided on the top of the lower die assembly 3, and a pressure detection component 4 is provided between the upper die assembly 2 and the lower die assembly 3.

[0026] The pressure detection assembly 4 includes a load cell 401, a fixed base 402, and a mounting plate 403. The fixed base 402 is disposed at the bottom of the mounting plate 403, and the load cell 401 is connected to the bottom of the mounting plate 403 by bolts.

[0027] The upper mold assembly 2 includes an upper mold base 201. The bottom of the upper mold base 201 is located at the top of the mounting plate 403 and a first nitrogen spring 206 is provided. The fixed base 402 is fitted with a top block 210 corresponding to the weighing sensor 401. The fixed base 402 is located at the periphery of the top block 210 and a second nitrogen spring 207 is provided.

[0028] During use, an automatic pressure detection mechanism is added through the weighing sensor 401, fixed base 402, mounting plate 403, upper mold base 201, first nitrogen spring 206, top block 210 and second nitrogen spring 207. During the riveting process in the mold, the riveting force can be detected in real time to detect defective products.

[0029] For example, such as Figure 2 , Figure 3 As shown, the present invention also includes a pressure plate 203 at the bottom of the second nitrogen spring 207, an upper clamping plate insert 202 at the bottom of the top block 210 inside the fixing seat 402, a rivet punch 205 fixedly disposed at the bottom of the upper clamping plate insert 202, and a guide pin 204 disposed at the bottom of the rivet punch 205.

[0030] During use, the pressure plate 203 is used to press down and fix the material sheet 6. The second nitrogen spring 207 is symmetrically installed at the bottom four corners of the upper clamping plate insert 202, so that the pressure plate 203 forms a horizontal suspension state, ensuring that the pressure force is evenly applied to the surface of the material sheet 6, and avoiding riveting defects caused by insufficient local pressure.

[0031] For example, such as Figure 3 As shown, the present invention also includes an inner guide sleeve 209 provided on the inner side of the fixed base 402, an inner guide post 208 sleeved inside the inner guide sleeve 209, and the top of the inner guide post 208 is fixedly connected to the bottom of the mounting plate 403.

[0032] During use, the inner guide sleeve 209 and inner guide post 208 can guide the movement of the mounting plate 403, improving the accuracy and stability of the movement.

[0033] For example, such as Figure 3 As shown, the present invention also includes multiple guide pins 206, which are symmetrically distributed at the bottom of the pressure plate 203 for positioning the sheet 6.

[0034] During use, the guide pin 206 can be pre-inserted into the corresponding positioning hole of the material piece 6 to complete precise positioning before the riveting and stamping action.

[0035] For example, such as Figure 3 As shown, the present invention also includes a weighing sensor 401 comprising a wire, and the weighing sensor 401 is electrically connected to an external display device via the wire for real-time display of the riveting pressure detection value.

[0036] During use, the load cell 401 can be connected to an external display device via a wire so that the riveting pressure detection value can be displayed in real time.

[0037] For example, such as Figure 1 As shown, the present invention also includes an installation hole for connecting a stamping device on the top of the upper mold base 201, and an installation groove for fixing to the workbench on the bottom of the base 1.

[0038] When in use, the mounting holes facilitate the pre-fixed connection of the stamping equipment, and the mounting groove facilitates the fixed installation of the base 1 on the workbench.

[0039] For example, such as Figure 3 As shown, the present invention also includes a planar contact surface between the top block 210 and the weighing sensor 401, which is used to uniformly transmit the pressure during riveting through the top block 210 to the weighing sensor 401.

[0040] In use, the rivet punch 205 causes the top block 210 to be subjected to force, and the top block 210 can transmit the force to the load cell 401, thereby achieving the effect of real-time detection of pressure.

[0041] For example, such as Figure 1 As shown, the present invention also includes a lower mold assembly 3 comprising a lower mold base 301, the top of which is connected to a lower mold core 302 by bolts.

[0042] During use, the lower die base 301 and lower die core 302 facilitate the riveting and stamping action with the upper die base 201.

[0043] For example, such as Figure 1 As shown, the present invention also includes a PLC controller in the base 1.

[0044] During use, the PLC controller facilitates the cooperation between the traction equipment, feeding mechanism, and hydraulic equipment to perform in-mold riveting and stamping operations.

[0045] In use, the external traction device first moves the sheet 6 laterally to the riveting station. The rivet 5 is conveyed to the top of the sheet 6 through the rivet conveying mechanism. At the same time, the first nitrogen spring 206 provides continuous pressure. When the stamping equipment moves the upper die base 201 downward, the pressure plate 203 is elastically connected to the upper clamping plate insert 202 through the second nitrogen spring 207. After the pressure plate 203 moves downward and presses down on the sheet 6, the nitrogen spring 2 begins to compress, generating gradually increasing elastic pressure, which can stably press the sheet 6 onto the riveting station of the lower die core 302, preventing the sheet 6 from shifting during the riveting process.

[0046] Next, the upper mold base 201 continues to descend. The guide pin 204 is pre-inserted into the positioning hole of the material sheet 6 for precise positioning. When the rivet punch 205 continues to descend with the upper clamping plate insert 202 to squeeze the rivet 5, the rivet punch 205 causes the top block 210 to be stressed. The top block 210 transmits the vertical pressure to the weighing sensor 401 nested in the groove of the fixed base 402. At the same time, under the joint action of the first nitrogen spring 206, the weighing sensor 401 can display the pressure at this time of riveting, so as to achieve the effect of detecting the pressure magnitude. It can detect the force value of the pressure source in real time during the actual riveting process, so as to detect defective products in time, avoid defective products from being mixed with high-quality products, thereby improving the processing quality and greatly improving the use effect of the mold.

[0047] 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 descriptions of the above embodiments and specifications are merely illustrative of the principles of this 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 protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An in-mold riveting stamping die with automatic pressure detection, characterized in that, It includes a base (1), an upper mold assembly (2), a lower mold assembly (3), rivets (5) and a sheet (6). The lower mold assembly (3) is provided on the top of the base (1), and the upper mold assembly (2) is provided on the top of the lower mold assembly (3). A pressure detection assembly (4) is provided between the upper mold assembly (2) and the lower mold assembly (3). The pressure detection assembly (4) includes a load cell (401), a fixed base (402) and a mounting plate (403). The fixed base (402) is disposed at the bottom of the mounting plate (403), and the load cell (401) is connected to the bottom of the mounting plate (403) by bolts. The upper mold assembly (2) includes an upper mold base (201), the bottom of which is located at the top of the mounting plate (403) and is provided with a first nitrogen spring (206). The fixed base (402) is fitted with a top block (210) corresponding to the weighing sensor (401), and the fixed base (402) is provided with a second nitrogen spring (207) located outside the top block (210).

2. The in-mold riveting stamping die with automatic pressure detection according to claim 1, characterized in that, The bottom of the second nitrogen spring (207) is provided with a pressure plate (203), and the bottom of the top block (210) in the fixed seat (402) is provided with an upper clamping plate insert (202). A rivet punch (205) is fixedly provided at the bottom of the upper clamping plate insert (202), and a guide pin (204) is provided at the bottom of the rivet punch (205).

3. The in-mold riveting stamping die with automatic pressure detection according to claim 1, characterized in that, An inner guide sleeve (209) is provided on the inner side of the fixed base (402), and an inner guide post (208) is sleeved inside the inner guide sleeve (209), and the top of the inner guide post (208) is fixedly connected to the bottom of the mounting plate (403).

4. The in-mold riveting stamping die with automatic pressure detection according to claim 2, characterized in that, The guide pins (204) are multiple and symmetrically distributed at the bottom of the pressure plate (203) for positioning the sheet (6).

5. The in-mold riveting stamping die with automatic pressure detection according to claim 1, characterized in that, The weighing sensor (401) includes a wire, and the weighing sensor (401) is electrically connected to an external display device through the wire to display the riveting pressure detection value in real time.

6. The in-mold riveting stamping die with automatic pressure detection according to claim 1, characterized in that, The upper die base (201) has a mounting hole at the top for connecting the stamping equipment, and the base (1) has a mounting groove at the bottom for fixing to the workbench.

7. The in-mold riveting stamping die with automatic pressure detection according to claim 1, characterized in that, The contact surface between the top block (210) and the load cell (401) is a plane, which is used to uniformly transmit the pressure during riveting through the top block (210) to the load cell (401).

8. The in-mold riveting stamping die with automatic pressure detection according to claim 1, characterized in that, The lower mold assembly (3) includes a lower mold base (301), the top of which is connected to the lower mold core (302) by bolts.

9. The in-mold riveting stamping die with automatic pressure detection according to claim 1, characterized in that, The base (1) includes a PLC controller.

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