Multi-stage stamping forming die for aluminum cover plate

Abstract

The utility model discloses a kind of aluminum material cover plate multistage stamping forming die, including upper die holder and lower die holder, upper die holder and lower die holder are sequentially provided with cutting material station, pre-pressing station, forming station, lower die holder is provided with lower pre-pressing block on pre-pressing station;Upper die holder is provided with upper pre-pressing block on pre-pressing station;Lower die holder is provided with a pair of positioning pin matched with workpiece upper positioning hole on pre-pressing station, upper die holder is provided with material-avoiding hole matched with positioning pin on pre-pressing station;Lower pre-pressing block is provided with several convex rib pre-pressing strips, the height of convex rib pre-pressing strip is higher than the height of workpiece upper forming convex rib 0.3-0.5mm;Upper pre-pressing block is provided with several convex rib pre-pressing grooves matched with each convex rib pre-pressing strip.

Description

Technical Field

[0001] This utility model relates to a stamping processing equipment, specifically to a multi-stage stamping forming die for aluminum cover plates. Background Technology

[0002] Aluminum cover plates, due to their relatively flat shape and large surface area, are highly susceptible to springback after molding. This springback can cause warping and unevenness, affecting usability and leading to scrapping, significantly increasing production costs. Furthermore, the unpredictable timing of springback can result in customer complaints and product recalls. Even the addition of reinforcing ribs to the cover plate does not effectively solve this problem. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a multi-stage stamping die for aluminum cover plates to solve the problem of excessive springback of parts and ensure the quality of finished products.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a multi-stage stamping forming die for aluminum cover plates, including an upper die base and a lower die base, wherein the upper die base and the lower die base are sequentially provided with a cutting station, a pre-pressing station and a forming station;

[0005] The upper die base has an upper cutting seat at the cutting station, and the upper cutting seat has a pair of positioning punches for punching positioning holes on the workpiece. The upper cutting seat is detachably equipped with an upper cutting knife assembly. The lower die base has a lower cutting seat at the cutting station, and the lower cutting seat has positioning die buttons that cooperate with the pair of positioning punches. The lower cutting seat is detachably equipped with a lower cutting knife assembly.

[0006] The lower mold base has a lower pre-pressing block at the pre-pressing station; the upper mold base has an upper pre-pressing block at the pre-pressing station; the lower mold base has a pair of locating pins at the pre-pressing station that mate with the locating holes on the workpiece; the upper mold base has a material-avoiding hole at the pre-pressing station that mates with the locating pins; the lower pre-pressing block has several raised rib pre-pressing strips, the height of which is 0.3-0.5mm higher than the forming ribs on the workpiece; the upper pre-pressing block has several raised rib pre-pressing grooves that mate with each raised rib pre-pressing strip.

[0007] The upper mold base has a pair of positioning pins at the forming station that mate with the positioning holes on the workpiece; the lower mold base has a material-avoiding hole at the forming station that mates with the positioning pins; the lower mold base has a lower forming block at the forming station, and the upper mold base has an upper forming block at the forming station; the lower forming block has several raised rib forming strips, the height of which is the height of the formed ribs on the workpiece; the upper forming block has several raised rib forming grooves that mate with each raised rib forming strip.

[0008] The upper die base is equipped with several punching punches for punching through holes in the workpiece at the forming station, and the lower die base is equipped with matching punching die buttons at the forming station.

[0009] As a preferred embodiment, the upper mold base is provided with several elastic pressure pins for pre-pressing workpieces at the cutting station, pre-pressing station, and forming station.

[0010] As a preferred embodiment, the lower mold base is provided with several workpiece limiting components that restrict the edges of the workpiece at both the pre-pressing station and the forming station.

[0011] As a preferred embodiment, the lower mold base is provided with a pre-compression cavity at the pre-compression station, the pre-compression cavity is provided with the lower pre-compression block, and the side wall of the pre-compression cavity is provided with a number of side pads for adjusting the position of the lower pre-compression block.

[0012] As a preferred embodiment, the lower mold base is provided with a molding cavity at the molding station, the molding cavity is provided with the lower molding block, and the side wall of the molding cavity is provided with a number of side pads for adjusting the position of the lower molding block.

[0013] The beneficial effects of this utility model are:

[0014] This mold is equipped with a cutting station, a pre-pressing station, and a forming station in sequence. The lower pre-pressing block of the pre-pressing station has several raised pre-pressing strips, the height of which is 0.3-0.5mm higher than the forming ribs on the workpiece. The upper pre-pressing block has several raised pre-pressing grooves that mate with each raised pre-pressing strip. The lower forming block of the forming station has several raised forming strips, the height of which is the same as the height of the forming ribs on the workpiece. The upper forming block has several raised forming grooves that mate with each raised forming strip. By first raising the raised ribs by 0.3-0.5mm, and then pressing them back once in the subsequent forming process, the problem of flatness deviation caused by springback is effectively solved, ensuring product quality. Furthermore, the continuous processing of the three stations reduces material handling costs, improves processing efficiency, and lowers processing costs.

[0015] Because the upper mold base is equipped with several elastic pressure pins for pre-pressing workpieces at the cutting station, pre-pressing station, and forming station, the workpiece will not shift position during product processing, further ensuring the accuracy of processing.

[0016] Because the lower mold base is equipped with several workpiece limiting components that restrict the edges of the workpiece at both the pre-pressing station and the forming station, the accuracy of workpiece positioning is ensured.

[0017] Because the lower mold base has a pre-compression cavity at the pre-compression station, and the pre-compression cavity contains the lower pre-compression block, and the side wall of the pre-compression cavity is provided with a number of side pads for adjusting the position of the lower pre-compression block; the lower mold base has a molding cavity at the molding station, and the molding cavity contains the lower molding block, and the side wall of the molding cavity is provided with a number of side pads for adjusting the position of the lower molding block, appropriate side pads can be selected according to the installation situation, reducing the difficulty of mold processing and installation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the lower mold structure.

[0019] Figure 2 This is a schematic diagram of the upper mold structure.

[0020] Figure 3 This is a schematic diagram of the workpiece after processing at each workstation.

[0021] In the diagram: 1 Upper die holder, 2 Lower die holder, 3 Upper cutting seat, 4 Positioning punch, 5 Upper cutting blade assembly; 6 Lower cutting seat, 7 Positioning die button, 8 Lower cutting blade assembly; 9 Lower pre-pressing block; 10 Upper pre-pressing block; 11 Positioning pin, 12 Rib pre-pressing strip, 13 Lower forming block, 14 Upper forming block; 15 Rib forming strip, 16 Punching punch, 17 Punching die button, 18 Elastic pressure pin, 19 Workpiece limiting component, 20 Side pad block. Detailed Implementation

[0022] The specific implementation scheme of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] like Figure 1-3 As shown, the multi-stage stamping forming die for aluminum cover plates includes an upper die base 1 and a lower die base 2, with a cutting station, a pre-pressing station, and a forming station sequentially provided on the upper die base 1 and the lower die base 2.

[0024] The upper die base 1 is provided with an upper cutting seat 3 at the cutting station. The upper cutting seat 3 is provided with a pair of positioning punches 4 for punching positioning holes on the workpiece. The upper cutting seat 3 is detachably provided with an upper cutting knife assembly 5. The lower die base 2 is provided with a lower cutting seat 6 at the cutting station. The lower cutting seat 6 is provided with positioning die buttons 7 that cooperate with the pair of positioning punches 4. The lower cutting seat 6 is detachably provided with a lower cutting knife assembly 8.

[0025] The lower mold base 2 has a pre-pressing cavity at the pre-pressing station, and a lower pre-pressing block 9 is provided in the pre-pressing cavity. Several side pads 20 for adjusting the position of the lower pre-pressing block 9 are provided on the side wall of the pre-pressing cavity. The upper mold base 1 has an upper pre-pressing block 10 at the pre-pressing station; the lower mold base 2 has a pair of positioning pins 11 at the pre-pressing station that mate with positioning holes on the workpiece, and a material-avoiding hole at the pre-pressing station that mates with the positioning pins 11; the lower pre-pressing block 9 has several raised rib pre-pressing strips 12, the height of which is 0.3-0.5mm higher than the forming ribs on the workpiece; the upper pre-pressing block 10 has several raised rib pre-pressing grooves that mate with each raised rib pre-pressing strip 12.

[0026] The upper mold base 1 is provided with a pair of positioning pins 11 that cooperate with the positioning holes on the workpiece at the forming station. The lower mold base 2 is provided with a material-avoiding hole that cooperates with the positioning pins 11 at the forming station. The lower mold base 2 is provided with a forming cavity at the forming station. The forming cavity is provided with a lower forming block 13. The side wall of the forming cavity is provided with a number of side pads 20 for adjusting the position of the lower forming block 13.

[0027] The upper mold base 1 is provided with an upper forming block 14 at the forming station; the lower forming block 13 is provided with a number of raised rib forming strips 15, the height of the raised rib forming strips 15 is the height of the raised rib forming strips on the workpiece; the upper forming block 14 is provided with a number of raised rib forming grooves that cooperate with each raised rib forming strip 15.

[0028] The upper die base 1 has several punches 16 for punching through holes in the workpiece at the forming station, and the lower die base 2 has matching punching die buttons 17 at the forming station. The upper die base 1 has several elastic pressure pins 18 for pre-pressing the workpiece at the cutting station, pre-pressing station, and forming station. The lower die base 2 has several workpiece limiting parts 19 for restricting the edges of the workpiece at both the pre-pressing station and the forming station.

[0029] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the protection scope of the present invention.

Claims

1. A multi-stage stamping forming die for aluminum cover plates, comprising an upper die base (1) and a lower die base (2), wherein the upper die base (1) and the lower die base (2) are sequentially provided with a cutting station, a pre-pressing station, and a forming station. The upper die base (1) is provided with an upper cutting seat (3) at the cutting station. The upper cutting seat (3) is provided with a pair of positioning punches (4) for punching positioning holes on the workpiece. The upper cutting seat (3) is detachably provided with an upper cutting knife assembly (5). The lower die base (2) is provided with a lower cutting seat (6) at the cutting station. The lower cutting seat (6) is provided with a positioning die button (7) that cooperates with the pair of positioning punches (4). The lower cutting seat (6) is detachably provided with a lower cutting knife assembly (8). Its features are: The lower mold base (2) is provided with a lower pre-pressing block (9) at the pre-pressing station; the upper mold base (1) is provided with an upper pre-pressing block (10) at the pre-pressing station; the lower mold base (2) is provided with a pair of positioning pins (11) that cooperate with the positioning holes on the workpiece at the pre-pressing station; the upper mold base (1) is provided with a material-avoiding hole that cooperates with the positioning pins (11) at the pre-pressing station; the lower pre-pressing block (9) is provided with a number of rib pre-pressing strips (12), the height of the rib pre-pressing strips (12) is 0.3-0.5mm higher than the forming ribs on the workpiece; the upper pre-pressing block (10) is provided with a number of rib pre-pressing grooves that cooperate with each rib pre-pressing strip (12); The upper mold base (1) is provided with a pair of positioning pins (11) that cooperate with the positioning holes on the workpiece at the forming station. The lower mold base (2) is provided with a material-avoiding hole that cooperates with the positioning pins (11) at the forming station. The lower mold base (2) is provided with a lower forming block (13) at the forming station. The upper mold base (1) is provided with an upper forming block (14) at the forming station. The lower forming block (13) is provided with several rib forming strips (15), and the height of the rib forming strips (15) is the height of the forming rib on the workpiece. The upper forming block (14) is provided with several rib forming grooves that cooperate with each rib forming strip (15). The upper die base (1) is provided with several punching punches (16) for punching through holes in the workpiece at the forming station, and the lower die base (2) is provided with matching punching die buttons (17) at the forming station.

2. The multi-stage stamping die for aluminum cover plates as described in claim 1, characterized in that: The upper mold base (1) is provided with several elastic pressure pins (18) for pre-pressing workpieces at the cutting station, pre-pressing station and forming station.

3. The multi-stage stamping die for aluminum cover plates as described in claim 1, characterized in that: The lower mold base (2) is provided with several workpiece limiting parts (19) that restrict the edges of the workpiece in both the pre-pressing station and the forming station.

4. The multi-stage stamping die for aluminum cover plates as described in claim 1, characterized in that: The lower mold base (2) is provided with a pre-compression cavity at the pre-compression station, and the lower pre-compression block (9) is provided in the pre-compression cavity. Several side pads (20) for adjusting the position of the lower pre-compression block (9) are provided on the side wall of the pre-compression cavity.

5. The multi-stage stamping forming die for aluminum cover plates as described in claim 1, characterized in that: The lower mold base (2) is provided with a molding cavity at the molding station, and the lower molding block (13) is provided in the molding cavity. Several side pads (20) for adjusting the position of the lower molding block (13) are provided on the side wall of the molding cavity.

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