Engine cover stamping equipment

Abstract

The utility model discloses engine cover stamping equipment which comprises an upper pressing die, a lower pressing die, a base, an elastic reset assembly and a plurality of shaping cutter assemblies, the elastic reset assembly is installed between the bottom end face of the lower pressing die and the upper end face of the base, and a groove is formed in the bottom end face of the upper pressing die; a plurality of shaping cutter assemblies are arranged on the outer edge of the periphery of a lower forming plate at intervals, in the process that an upper forming plate is pressed downwards and the lower forming plate punches an engine hood, shaping cutters in the shaping cutter assemblies are matched with grooves in the bottom end face of the upper forming plate, and in the process that the shaping cutters are matched with the grooves, the shaping cutters are matched with the grooves. The trimming knife cuts the outer edge of the periphery of the engine hood so as to remove and trim burrs possibly generated on the outer edge of the periphery of the engine hood, and due to the fact that the burrs on the outer edge of the periphery of the engine hood are removed and trimmed at the same time in the punch forming process of the engine hood, the engine hood does not need to be transferred and trimmed after being punched; therefore, the production efficiency of the engine cover is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive stamping production equipment, and specifically to an engine hood stamping equipment. Background Technology

[0002] A car hood is an openable cover located at the front of the vehicle's engine. Its main function is to seal the engine, isolate it from noise and heat, and protect the engine and its paint. Car hoods are typically made of steel or aluminum alloy, materials that have high strength and good heat resistance, enabling them to withstand the high temperatures and pressures generated by the engine.

[0003] The manufacturing process of a hood includes stamping, welding, and painting. The stamping process involves pressing a sheet metal into the shape of the hood using a stamping press. During the stamping process, especially for hoods with complex shapes, the edges are susceptible to stress, which can cause burrs to form on the material edges.

[0004] In existing technologies, methods for repairing burrs on the edges of hoods generally include manual grinding, mechanical trimming, and laser cutting. Manual grinding involves using a grinder or file, suitable for small-batch or localized repairs. Mechanical trimming uses a special mold for secondary stamping to precisely remove excess edges, suitable for mass production, offering high efficiency and good consistency. Laser cutting uses a laser cutting machine to finely trim the edges, offering high precision and suitability for mass production. However, all of these methods involve removing the stamped hood after it has been formed and positioning it with tooling before repair, reducing the production efficiency of hoods. Utility Model Content

[0005] To address the low production efficiency caused by the need to remove and repair the hood during the stamping process of existing car hoods due to burrs on the edges, this invention provides a hood stamping device.

[0006] To solve the above-mentioned technical problems, this utility model provides an engine hood stamping device, including an upper die, a lower die, a base, an elastic reset component, and multiple sets of shaping cutter assemblies. The upper die includes an upper forming plate, and the lower die includes a lower forming plate. Multiple guide posts are provided between the bottom end face of the lower die and the upper end face of the base. The lower die can move up and down along the guide posts. The elastic reset component is installed between the bottom end face of the lower die and the upper end face of the base. Multiple sets of shaping cutter assemblies are spaced apart along the outer edges of the lower forming plate. The bottom end face of the upper die is formed with a groove that matches the multiple shaping cutter assemblies. The shaping cutter assembly includes a mounting block and a cutting cutter. The mounting block is fixedly installed on the lower die, and the cutting cutter is fixedly installed on the top of the mounting block. The top of the cutting cutter is higher than the top surface of the lower forming plate.

[0007] In an embodiment of this utility model, a first support base is also included. The first support base is installed on the upper end surface of the base. The top end of the elastic reset component is connected to the bottom end surface of the lower mold, and the bottom end of the elastic reset component is fixedly connected to the top end surface of the first support base.

[0008] In an embodiment of this utility model, a second support base is also included. The second support base is fixedly installed on the upper end surface of the base. The elastic reset component includes a first spring assembly and a second spring assembly. The top end of the first spring assembly is fixedly connected to the bottom end surface of the lower mold, the bottom end of the first spring assembly is fixedly connected to the first support base, the top end of the second spring assembly is fixedly connected to the bottom end of the first support base, and the bottom end of the second spring assembly is fixedly connected to the top end of the second support base.

[0009] In an embodiment of this utility model, the first spring assembly is a helical spring, and the second spring assembly is an air spring.

[0010] In an embodiment of this utility model, a first support base is equipped with a plurality of support blocks corresponding to a plurality of trimming blade assemblies. The top of the support block extends to a position at a height of d1 above the top surface of the first support base, and the bottom of the support block extends to a position at a height of d2 below the bottom surface of the first support base. The sum of the values ​​of d1 and d2 is the groove depth of the groove.

[0011] In embodiments of this utility model, the first support base and the second support base are made of carbon steel.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. By using the above-mentioned engine hood stamping equipment, multiple sets of trimming knife assemblies are arranged at intervals around the outer edges of the lower forming plate. During the process of the upper forming plate pressing down and the lower forming plate stamping the engine hood, the trimming knife in the trimming knife assembly matches the groove at the bottom end face of the upper forming plate. During the process of matching with the groove, the trimming knife cuts the outer edges of the engine hood to remove and trim any burrs that may be generated around the outer edges of the engine hood. Since the burrs around the outer edges are removed and trimmed at the same time during the stamping process of the engine hood, it is not necessary to transfer and trim the engine hood after stamping, thus improving the production efficiency of the engine hood.

[0014] 2. By providing an elastic reset component between the bottom end face of the lower die and the upper end face of the base, the pressure applied by the upper die can be evenly distributed on the hood, which is beneficial to improving the stamping effect of the hood. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structural principle of the cover stamping equipment in the embodiments of this application.

[0017] Figure 2 This is a schematic diagram of the structural state in which the upper die moves downward to the lower die side in an embodiment of this application.

[0018] Figure 3 This is a schematic diagram of the structural state in which the upper and lower molds are attached in an embodiment of this application.

[0019] Figure 4 This is a schematic diagram illustrating the structural principle of the tool-cutting assembly in this application for cutting off the outer edges of the hood.

[0020] Figure 5 for Figure 1 A magnified schematic diagram of the structure at point A in the diagram.

[0021] Explanation of reference numerals in the attached figures

[0022] 10- Engine hood stamping equipment;

[0023] 20-Hood;

[0024] 100 - Upper mold, 101 - Upper forming plate, 102 - Groove;

[0025] 200-Lower pressing mold, 201-Lower forming plate, 202-Shaping tool assembly, 2021-Shaping tool, 2022-Mounting block, 203-Guide post, 204-First support seat, 205-Second support, 206-Support block;

[0026] 300 - Base;

[0027] 400 - Elastic reset assembly, 401 - First spring assembly, 402 - Second spring assembly. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0029] Please refer to the appendix. Figure 1 To be continued Figure 2As shown, this embodiment provides a hood stamping device 10, including an upper die 100, a lower die 200, a base 300, an elastic reset component, and multiple sets of shaping knife components 202.

[0030] The upper die 100 includes an upper forming plate 101 for molding metal sheets. The lower die 200 is located directly below the upper die 100. The lower die 200 includes a lower forming plate 201 that cooperates with the upper forming plate 101. Multiple guide posts 203 are provided between the bottom end face of the die and the upper end face of the base 300. The lower die 200 can move up and down along the guide posts 203. The elastic reset assembly 400 is installed between the bottom end face of the lower die 200 and the upper end face of the base 300.

[0031] The upper forming plate 101 and the lower forming plate 201 are complementary shapes. During pressing, the metal sheet placed between the upper forming plate 101 and the lower forming plate 201 can obtain a corresponding hood shape according to the forming space between the upper forming plate 101 and the lower forming plate 201.

[0032] See attached document Figure 1 and attached Figure 2 As shown, multiple sets of trimming blade assemblies 202 are arranged around the outer edges of the lower forming plate 201. Each trimming blade assembly 202 includes a mounting block 2022 and a trimming blade 2021. The mounting block 2022 is fixedly installed on the outer edge of the lower die 200. The top of the trimming blade 2021 is flush with the top surface of the lower die 200. The top of the trimming blade 2021 is flush with the top surface of the lower die 200, but the blade of the trimming blade 2021 protrudes to the upper surface of the lower forming plate 201, that is, the trimming blade 2021 is higher than the top surface of the lower forming plate 201.

[0033] The function of the mounting block 2022 is to fix the trimmer 2021 to the outer edge of the lower forming plate 201. In this embodiment, the mounting block 2022 can adopt a block-shaped structure, and the mounting block 2022 is provided with screw holes that run vertically through it. Countersunk screws are installed in the screw holes to fix the mounting block 2022 to the outer edges of the lower forming plate 201. The trimmer 2021 is fixedly installed on the top of the mounting block 2022, and the top of the trimmer 2021 is flush with the top surface of the lower die 200. The trimmer 2021 can be installed on the mounting block 2022 by welding or screw fixing. Understandably, after the cutting tool 2021 is installed on the mounting block 2022, the cutting edge of the cutting tool 2021 should be perpendicular to the part of the hood 20 to be cut. In this way, when the upper die 100 applies downward punching force to the metal sheet, the cutting edge of the cutting tool 2021 applies upward cutting force to the contact part with the hood 20, so as to make the edge of the hood 20 smooth and reduce the generation of burrs.

[0034] It should be noted that the function of the trimmer 2021 is to remove and trim the burrs generated on the outer edge of the stamped part (hood 20) after stamping. It works by using the blade of the trimmer 2021 to contact the outer edge of the stamped part and cut and trim it. Therefore, the trimmer 2021 can directly adopt the trimmer structure of the stamped part in the existing technology, and is suitable for precision trimming of stamped parts with high precision requirements. It can provide a more refined trimming effect and reduce the generation of burrs.

[0035] Continue to refer to the appendix Figure 1 To be continued Figure 4 As shown, a groove 102 that matches multiple shaping blade assemblies 202 is formed on the bottom end face of the upper die 100. When the lower die 200 stamps the metal sheet (hood 20) placed on the lower forming plate 201, the shaping blade 2021 in the shaping blade assembly 202 will be higher than the upper end face of the lower forming plate 201 and extend into the groove 102 at the bottom end face of the upper die 100. In this way, as the shaping blade 2021 extends into the groove 102, it cuts and trims the outer edge of the hood 20 that is in contact with its blade, thereby completing the shaping and deburring repair work of the outer edges of the hood 20.

[0036] Continue to refer to the appendix Figure 1 and attached Figure 2 As shown, the elastic reset component 400 is installed between the bottom end face of the lower die 200 and the upper end face of the base 300. By providing the elastic reset component 400 between the bottom end face of the lower die 200 and the upper end face of the base 300, the pressure applied by the upper die 100 can be evenly distributed on the hood 20, which is beneficial to improving the stamping effect of the hood 20.

[0037] Combined with reference to the appendix Figure 1 and attached Figure 2 As shown, in this embodiment, the hood stamping equipment 10 further includes a first support seat 204 and a second support seat 205. The first support seat 204 is installed on the upper surface of the base 300. The top end of the elastic reset component 400 is connected to the bottom surface of the lower die 200, and the bottom end of the elastic reset component 400 is fixedly connected to the top surface of the first support seat 204. The second support seat 205 is fixedly installed on the upper surface of the base 300. The elastic reset component 400 includes a first spring component 401 and a second spring component 402. The top end of the first spring component 401 is fixedly connected to the bottom surface of the lower die 200, and the bottom end of the first spring component 401 is fixedly connected to the first support seat 204. The top end of the second spring component 402 is fixedly connected to the bottom end of the first support seat 204, and the bottom end of the second spring component 402 is fixedly connected to the top end of the second support seat 205.

[0038] In some embodiments, the first spring assembly 401 and the second spring assembly 402 have different spring coefficients, for example, the first spring assembly 401 is a helical spring and the second spring assembly 402 is an air spring.

[0039] In some embodiments, the first support base 204 and the second support base 205 are made of carbon steel, that is, the first support base 204 and the second support base 205 are made of different materials than the upper die 100 and the lower die 200. Usually, the upper die 100 and the lower die 200 are made of cold alloy tool steel, which has a higher cost. The reason why the first support base 204 and the second support base 205 are made of carbon steel is to reduce the unit price by using a cheaper material.

[0040] See attached document Figure 1 Appendix Figure 2 and appendix Figure 5 As shown, the first support base 204 is equipped with a plurality of support blocks 206 corresponding to a plurality of trimming tool assemblies 202. The top of the support block 206 extends to a position at a height d1 above the top surface of the first support base 204, and the bottom of the support block 206 extends to a position at a height d2 below the bottom surface of the first support base 204. The sum of the values ​​of d1 and d2 is the groove depth of the groove 102.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. "Above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top," and "on the surface" can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature, and therefore should not be construed as a limitation of this utility model.

[0042] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including the combination of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A hood stamping device, characterized in that, The device includes an upper die, a lower die, a base, an elastic reset assembly, and multiple sets of shaping blade assemblies. The upper die includes an upper forming plate, and the lower die includes a lower forming plate. Multiple guide posts are provided between the bottom end face of the lower die and the upper end face of the base, allowing the lower die to move up and down along the guide posts. The elastic reset assembly is installed between the bottom end face of the lower die and the upper end face of the base. Multiple sets of shaping blade assemblies are spaced apart along the outer edges of the lower forming plate. The bottom end face of the upper die has grooves that match the multiple shaping blade assemblies. Each shaping blade assembly includes a mounting block and a shaping blade. The mounting block is fixedly mounted on the lower die, and the shaping blade is fixedly mounted on the top of the mounting block, with the top of the shaping blade higher than the top surface of the lower forming plate.

2. The engine hood stamping equipment according to claim 1, characterized in that, It also includes a first support base, which is installed on the upper end face of the base. The top end of the elastic reset component is connected to the bottom end face of the lower mold, and the bottom end of the elastic reset component is fixedly connected to the top end face of the first support base.

3. The engine hood stamping equipment according to claim 2, characterized in that, It also includes a second support base, which is fixedly installed on the upper end surface of the base. The elastic reset assembly includes a first spring assembly and a second spring assembly. The top end of the first spring assembly is fixedly connected to the bottom end surface of the lower mold, the bottom end of the first spring assembly is fixedly connected to the first support base, the top end of the second spring assembly is fixedly connected to the bottom end of the first support base, and the bottom end of the second spring assembly is fixedly connected to the top end of the second support base.

4. The engine hood stamping equipment according to claim 3, characterized in that, The first spring assembly is a helical spring, and the second spring assembly is an air spring.

5. The engine hood stamping equipment according to claim 3, characterized in that, The first support base is equipped with a plurality of support blocks corresponding to the plurality of shaping blade assemblies. The top end of the support block extends to a position at a height of d1 above the top surface of the first support base, and the bottom end of the support block extends to a position at a height of d2 below the bottom surface of the first support base. The sum of the values ​​of d1 and d2 is the groove depth of the groove.

6. The engine hood stamping equipment according to claim 3, characterized in that, The first and second support bases are made of carbon steel.

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