Stamping die for automobile parts

Abstract

The invention relates to the technical field of stamping dies, and discloses an automobile part stamping die which comprises a lower die and an upper die. A base plate convex piece is mounted on the lower die, and a sealing plate convex piece is mounted on the base plate convex piece; a base plate groove matched with the base plate convex piece and a sealing plate groove matched with the sealing plate convex piece are formed in the bottom of the upper die; when a workpiece is placed on the lower die, the upper die moves downwards to punch the workpiece, and a corresponding base plate structure and a corresponding sealing plate structure can be punched on the workpiece through the base plate convex piece and the sealing plate convex piece on the lower die. The sealing plate convex piece is integrally arranged on the base plate convex piece of the lower die, so that forming of the main body of the ground base plate and blanking of the functional opening are synchronously completed in the same set of die, and opening excess materials which are originally used as waste materials are directly formed into useful trunk sealing plates, so that the material utilization rate is increased, and the production cost is reduced. And the investment cost and the process circulation time of a special sealing plate mold are reduced.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, and in particular to a stamping die for automotive parts. Background Technology

[0002] The trunk floor mat (also known as the trunk floor, luggage compartment floor, or spare tire cover) is an important functional component of modern automotive interior systems. It is usually installed at the bottom of the vehicle's trunk (luggage compartment), covering the spare tire compartment or storage space. It serves a combination of functions, including carrying luggage, isolating noise, beautifying the interior, and protecting the storage space below. When processing this floor mat, stamping dies are used to stamp the sheet metal into shape.

[0003] In the structure of a car trunk, the trunk cover, as a small independent trim piece installed on the inside of the tailgate, usually serves to cover the internal sheet metal structure, arrange the inspection window, and improve the overall visual consistency of the trunk. Compared with the larger floor mat laid at the bottom of the trunk, this cover is a relatively regular-shaped and smaller auxiliary cover. However, it must also have good rigidity, assembly precision, and matching performance with the surrounding interior parts. Therefore, it requires a special stamping die to stamp it.

[0004] In the production process of trunk floor mats, in order to achieve partial avoidance or functional openings in certain areas, such as for installing anchor points, handles, or opening structures for easy access to the bottom storage compartment, a punching process is usually required in the mold to form the corresponding openings. However, in current conventional processes, the sheet material scraps punched off from these opening areas are often directly treated as waste, failing to achieve effective material reuse. At the same time, the trunk sealing plate, as another independent component, requires a special mold for stamping during processing. However, in the existing technology, there is a lack of an integrated structural design that can simultaneously form the main structure of the trunk floor mat and punch the functional openings in the same set of stamping molds, and simultaneously form the sheet material punched off from the opening areas directly into the trunk sealing plate.

[0005] To address the aforementioned problems, this application proposes a stamping die for automotive parts. Summary of the Invention

[0006] This invention proposes a stamping die for automotive parts, which solves the problems of directly discarding the excess material generated from punching the functional opening of the trunk floor mat in related technologies, resulting in low material utilization, and the trunk sealing plate requiring independent mold processing. There is a lack of integrated mold design that can directly form the excess material punched off the floor mat into the sealing plate, leading to the problems of scattered processes and increased costs.

[0007] The present invention provides a stamping die for automotive parts, comprising a lower die and an upper die;

[0008] A pad protrusion is installed on the lower mold, and a sealing plate protrusion is installed on the pad protrusion;

[0009] The bottom of the upper mold is provided with a pad groove that matches the pad protrusion and a sealing plate groove that matches the sealing plate protrusion.

[0010] When the workpiece is placed on the lower die, the upper die moves down to press the workpiece. The corresponding pad and sealing plate structures can be punched out of the workpiece through the pad protrusion and sealing plate protrusion on the lower die.

[0011] As a further optimization of the present invention, the pad protrusion includes a pad protrusion, the pad protrusion is installed on the top of the lower mold, and an irregular protrusion is integrally formed on the pad protrusion.

[0012] As a further optimization of the present invention, the sealing plate protrusion includes a sealing plate protrusion, the top surface of the pad protrusion is integrally formed with the sealing plate protrusion, and a cross protrusion is integrally formed on the sealing plate protrusion.

[0013] As a further optimization of the present invention, the top of the lower mold is provided with a rectangular air blowing groove arranged around the protrusion of the pad plate, and the rectangular air blowing groove is used to blow air onto the protrusion of the pad plate.

[0014] As a further optimization of the present invention, the lower mold is provided with an air guide channel communicating with a rectangular air blowing groove, and the side of the lower mold is provided with an air inlet communicating with the air guide channel.

[0015] As a further optimization of the present invention, the lower die is equipped with a telescopic push rod arranged around the protrusion of the pad, and the telescopic push rod is used to lift the stamped pad.

[0016] The above-described technical solution of the present invention has the following beneficial technical effects:

[0017] 1. When processing automotive parts, the sheet metal is placed on the lower die, and then the upper die is moved down by the press to stamp the sheet metal. Under pressure, the sheet metal can be stamped into a trunk floor mat structure through the pad protrusion on the lower die. Since the pad protrusion is integrally provided with a sealing plate protrusion, the corresponding opening can be punched out on the stamped pad through the sealing plate protrusion, so that the material punched out at the opening forms the sealing plate structure in actual use. The above design, by integrally setting the sealing plate protrusion on the pad protrusion of the lower die, realizes the simultaneous completion of the main body forming of the floor mat and the functional opening punching in the same set of molds, and directly forms the opening scrap that was originally waste into a useful trunk sealing plate, improving the material utilization rate and reducing the investment cost of special sealing plate molds and process flow time.

[0018] 2. After the sheet metal is stamped, the press drives the upper die to move upward. Then, the sheet metal can be lifted up by the telescopic ejector rod on the lower die. The air inlet on the lower die is connected to an air pipe. The gas enters the air guide channel in the lower die through the air inlet, and then exits through the rectangular air blowing grooves arranged around the pad protrusion. This blowing of air onto the surface of the pad protrusion can both cool it down and remove impurities, keeping the surface of the pad protrusion clean. The above design, while ejecting the die, uses the rectangular air blowing grooves around the pad protrusion to quickly cool the surface of the die and the formed part, prevent thermal deformation, and effectively remove debris and impurities generated during the stamping process, ensuring the surface of the pad protrusion is clean. This improves the surface quality of the product, reduces die wear caused by impurities, and extends the service life of the die. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a stamping die for automotive parts proposed in this invention;

[0020] Figure 2 This is a front view of a stamping die for automotive parts proposed in this invention;

[0021] Figure 3 This is a schematic diagram of the lower mold structure in this invention;

[0022] Figure 4 This is a schematic diagram of the structure of the sealing plate protrusion in this invention;

[0023] Figure 5 This is a schematic diagram of the upper mold in this invention.

[0024] Reference numerals: 1. Lower mold; 101. Telescopic ejector rod; 11. Pad plate protrusion; 111. Pad plate protrusion; 112. Irregular protrusion; 12. Sealing plate protrusion; 121. Sealing plate protrusion; 122. Cross protrusion; 13. Rectangular air blowing groove; 14. Air inlet; 2. Upper mold; 21. Pad plate groove; 22. Sealing plate groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0026] like Figure 1-5 As shown, the present invention provides a stamping die for automotive parts, comprising a lower die 1 and an upper die 2;

[0027] A pad protrusion 11 is installed on the lower mold 1, and a sealing plate protrusion 12 is installed on the pad protrusion 11;

[0028] The bottom of the upper mold 2 is provided with a pad groove 21 that matches the pad protrusion 11 and a sealing plate groove 22 that matches the sealing plate protrusion 12.

[0029] When the workpiece is placed on the lower die 1, the upper die 2 moves down to punch the workpiece. The corresponding pad structure and sealing structure can be punched out of the workpiece through the pad protrusion 11 and the sealing protrusion 12 on the lower die 1.

[0030] The sheet material is placed on the lower mold 1, and the press drives the upper mold 2 to move down. The pad groove 21 of the upper mold 2 cooperates with the pad protrusion 11 of the lower mold 1, and the sealing plate groove 22 cooperates with the sealing plate protrusion 12. Under pressure, the sheet material is stamped into a trunk floor mat structure, and corresponding openings are punched out at the same time. The material punched out at the openings forms the sealing plate structure. The above achieves the simultaneous completion of the main body forming and functional opening punching of the floor mat in the same set of molds, which improves the material utilization rate and reduces the investment cost and process flow time of the special sealing plate mold.

[0031] It should be noted that in actual use, the upper mold 2 is connected to the drive end of the press.

[0032] In this embodiment, the pad protrusion 11 includes a pad protrusion 111, which is installed on the top of the lower mold 1, and an irregular protrusion 112 is integrally formed on the pad protrusion 111.

[0033] During the process of the upper die 2 moving down to stamp the sheet metal, the pad protrusion 111 cooperates with the pad groove 21 of the upper die 2 to stamp out the basic shape of the main body of the floor mat, while the irregular protrusion 112 stamps out the specific irregular structure on the floor mat. The above can accurately stamp out the main body of the floor mat and the specific irregular structure to meet the shape requirements of different parts of the floor mat.

[0034] In this embodiment, the sealing plate protrusion 12 includes a sealing plate protrusion 121, the top surface of the pad protrusion 111 is integrally formed with the sealing plate protrusion 121, and a cross protrusion 122 is integrally formed on the sealing plate protrusion 121.

[0035] When the upper die 2 moves down to press, the sealing plate protrusion 121 punches out the basic shape of the sealing plate on the sheet metal, while the cross protrusion 122 punches out a cross-shaped structure on the sealing plate, so that the punched-out opening material forms a sealing plate with a cross structure. The above can accurately form a sealing plate structure that meets the requirements, ensuring the shape and structural accuracy of the sealing plate.

[0036] In this embodiment, the top of the lower mold 1 is provided with a rectangular air blowing groove 13 arranged around the pad protrusion 111, and the rectangular air blowing groove 13 is used to blow air onto the pad protrusion 111; the lower mold 1 is provided with an air guiding channel communicating with the rectangular air blowing groove 13, and the side of the lower mold 1 is provided with an air inlet 14 communicating with the air guiding channel.

[0037] Connect the air pipe to the air inlet 14 on the side of the lower mold 1. After the sheet metal is stamped, the gas enters the air guide channel in the lower mold 1 through the air inlet 14, and then exits from the rectangular air blowing groove 13 arranged around the pad protrusion 111. This blows air onto the surface of the pad protrusion 111, which can both cool down the surface and prevent thermal deformation, and remove impurities, keeping the surface of the pad protrusion 111 clean, improving the surface quality of the product, reducing mold wear caused by impurities, and extending the service life of the mold.

[0038] In this embodiment, a telescopic push rod 101 is installed on the lower mold 1, which surrounds the pad protrusion 111, and the telescopic push rod 101 is used to lift the stamped pad.

[0039] After the sheet metal is stamped, the press drives the upper die 2 to move upward, and the telescopic ejector rod 101 extends upward to lift the stamped pad from the lower die 1, making it easier to remove the formed floor mat, improving production efficiency, and reducing the difficulty and labor intensity of manual part removal.

[0040] The specific working principle of this invention is as follows:

[0041] Place the sheet metal workpiece to be processed on the top of the lower die 1, so that the sheet metal covers the working area of ​​the pad protrusion 11, the sealing plate protrusion 12 and the telescopic ejector rod 101, and complete the loading and positioning before stamping.

[0042] An external press drives the upper mold 2 to move downwards. The groove 21 of the pad plate at the bottom of the upper mold 2 fits with the pad plate protrusion 11 of the lower mold 1, and the plate is stamped to form the main body of the trunk floor mat with an irregular structure. At the same time, the sealing plate groove 22 of the upper mold 2 fits with the sealing plate protrusion 12 of the lower mold 1. While the opening is punched out at the corresponding position of the floor mat, the excess material at the opening is directly punched into a trunk sealing plate with a cross structure. This allows a set of molds to complete the three processes of floor mat forming, floor mat opening punching, and sealing plate forming simultaneously.

[0043] Throughout the stamping process, the external air supply equipment inputs high-pressure gas through the air inlet 14 into the air guide channel. The gas is conducted through the air guide channel to the rectangular air blowing groove 13 arranged around the pad protrusion 111, and is blown out evenly from the groove, continuously blowing air onto the surface of the pad protrusion 111 and the stamping contact area of ​​the sheet metal. On the one hand, it blows away the debris and impurities generated during stamping, and on the other hand, it cools down the mold protrusion and the sheet metal during forming, preventing thermal deformation and impurity residue from affecting product quality.

[0044] After the stamping is completed, the external press drives the upper mold 2 to move upward and reset. Then the telescopic ejector rod 101 on the lower mold 1 extends upward and lifts the stamped floor pad and sealing plate simultaneously, so that the two parts are completely separated from the pad protrusion 11 and sealing plate protrusion 12 of the lower mold 1, and the demolding operation is completed. The operator can directly take away the formed automotive parts and enter the next processing stage.

[0045] After the molded parts are removed, the telescopic ejector rod 101 retracts downwards to reset, and the rectangular air blowing groove 13 continuously blows air to perform a final cleaning of the protrusion surface of the lower die 1. Then, a new sheet metal is placed and the next stamping cycle begins.

[0046] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A stamping die for automotive parts, characterized in that, Including the lower mold (1) and the upper mold (2); A pad protrusion (11) is installed on the lower mold (1), and a sealing plate protrusion (12) is installed on the pad protrusion (11). The bottom of the upper mold (2) is provided with a pad groove (21) that matches the pad protrusion (11) and a sealing groove (22) that matches the sealing protrusion (12). When the workpiece is placed on the lower die (1), the upper die (2) moves down to punch the workpiece. The corresponding pad structure and sealing structure can be punched out of the workpiece through the pad protrusion (11) and sealing protrusion (12) on the lower die (1).

2. The stamping die for automotive parts according to claim 1, characterized in that, The pad protrusion (11) includes a pad protrusion (111), which is installed on the top of the lower mold (1), and an irregular protrusion (112) is integrally formed on the pad protrusion (111).

3. A stamping die for automotive parts according to claim 2, characterized in that, The sealing plate protrusion (12) includes a sealing plate protrusion (121), the top surface of the pad protrusion (111) is integrally formed with the sealing plate protrusion (121), and a cross protrusion (122) is integrally formed on the sealing plate protrusion (121).

4. A stamping die for automotive parts according to claim 2, characterized in that, The top of the lower mold (1) is provided with a rectangular air blowing groove (13) arranged around the pad protrusion (111), and the rectangular air blowing groove (13) is used to blow air onto the pad protrusion (111).

5. A stamping die for automotive parts according to claim 4, characterized in that, The lower mold (1) has an air guide channel that communicates with the rectangular air blowing groove (13), and the side of the lower mold (1) has an air inlet (14) that communicates with the air guide channel.

6. A stamping die for automotive parts according to claim 1, characterized in that, The lower die (1) is equipped with a telescopic push rod (101) arranged around the pad protrusion (111), and the telescopic push rod (101) is used to lift the stamped pad.

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