Fender end stamping die
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FUZHOU JINHONGSHUN AUTO PARTS CO LTD
- Filing Date
- 2023-12-04
- Publication Date
- 2026-06-26
AI Technical Summary
When stamping car mudguards with molds, especially when cutting off the middle reinforcing zone of the workpiece connection, deformation and cracking are likely to occur, making it difficult to guarantee the accuracy of the stamped product.
A final stamping die for a mudguard was designed, employing an upper and lower die base structure. The lower die base is equipped with a lower mounting plate and a lower material support block, along with a floating material support block, positioning pins, a cutting blade block, and a guide cutting block. In conjunction with the upper die base's mounting base plate, positioning square pillars, forming blocks, and cutting blade blocks, the uniform force distribution and precise positioning are ensured through cross-shaped positioning keys and detachable positioning thin plates.
It achieves elastic deformation tolerance and stable positioning of the workpiece, ensures neat cuts, improves processing quality and finished product accuracy, reduces manufacturing costs, and facilitates workpiece removal.
Smart Images
Figure CN117531903B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a stamping die, and more specifically to a final stamping die for a mudguard. Background Technology
[0002] The left and right parts of a car mudguard are symmetrical in shape, such as... Figure 1 As shown, it includes a central mounting plate area, an inclined connecting side plate located on the outer edge of the mounting plate, and a C-shaped cover plate located on the outer edge of the connecting side plate. Because during the die-stamping of the left and right parts of the automotive mudguard, the central reinforcing area of the connection between the left and right parts needs to be cut off at the end of the process, this area is prone to deformation or even cracking during stamping, making it difficult to guarantee the accuracy of the stamped product. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to provide a mudguard final stamping die that has uniform force distribution, smooth material discharge, and good processing accuracy.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a mudguard final stamping die, including an upper die base and a lower die base, a lower mounting plate provided on the lower die base, a lower mounting groove provided on the lower mounting groove, a pair of lower support blocks that match the shape of the workpiece being formed, a floating support block movably provided on the lower mounting plate within the lower support blocks, the floating support block being located at the end of the lower support block away from the left and right part connection portion, a positioning pin protruding from the floating support block provided on the lower mounting plate, an installation slot provided on the lower support block, a lower cutting blade block for cutting off the left and right part connection portion provided in the installation slot, the lower cutting blade block being smaller than the size of the installation slot, lower guide cutting blocks provided on both sides of the lower mounting groove corresponding to the part of the workpiece to be cut, and several filling blocks provided on the outer periphery of the lower support block in the lower mounting groove to restrict the position of the lower support block and prevent its displacement.
[0005] The upper mold base is provided with a mounting base plate, and the mounting base plate is provided with positioning square posts at the four corners. The mounting base plate is provided with an upper mounting plate, and the upper mounting plate is provided with guide grooves that cooperate with the four positioning square posts. The upper mounting plate is provided with two upper forming blocks side by side, and the upper forming blocks are provided with forming pressure surfaces that cooperate with the finished workpiece. The upper mounting plate is provided with an upper cutting blade block for cutting off the connection between the left and right parts between the two upper forming blocks. The upper mounting plate is provided with upper cutting guide blocks on both sides of the upper cutting blade block.
[0006] As a preferred embodiment, the upper mounting plate is connected to the upper forming block by four positioning flat keys, which are arranged in a cross shape.
[0007] As a preferred embodiment, positioning plates are detachably provided on the two surfaces of the positioning column that mate with the upper mounting plate.
[0008] As a preferred embodiment, the lower mounting plate is provided with a number of elastic push pins corresponding to the outer periphery of the lower support block.
[0009] As a preferred embodiment, the lower mounting groove is provided with two pairs of elastic positioning pins that protrude from the two lower support blocks and cooperate with the through holes on the workpiece.
[0010] The beneficial effects of this invention are:
[0011] In this mold, because the lower cutting blade is smaller than the size of the mounting slot, lower guide cutting blocks are provided on both sides of the part of the workpiece to be cut in the lower mounting slot. These blocks can accommodate the elastic deformation of the workpiece, resulting in a clean cut and ensuring processing quality. Several filler blocks are provided around the lower support block in the lower mounting slot to limit its position and prevent it from shifting, making the installation and positioning of the lower support block more convenient and stable during stamping. The upper mold base has a mounting base plate with positioning posts at its four corners. An upper mounting plate is also provided on the mounting base plate, with guide slots that mate with the four positioning posts, making the installation and positioning of the upper mounting plate more convenient and accurate, thus ensuring the precision of the final formed workpiece.
[0012] Because the upper mounting plate is connected to the upper forming block by four positioning keys arranged in a cross shape, not only is the installation accuracy ensured, but the upper forming block will not shift during stamping.
[0013] Because the positioning column and the upper mounting plate are detachably equipped with positioning plates on their two surfaces, positioning is not only accurate, but also easy to install, thus reducing manufacturing costs.
[0014] Because the lower mounting plate is provided with several elastic ejector pins corresponding to the outer periphery of the lower support block, it is convenient to remove the workpiece after stamping.
[0015] Because the lower mounting groove is equipped with two pairs of elastic positioning pins that protrude from the two lower support blocks and cooperate with the through holes on the workpiece, the positioning of the workpiece is more convenient and accurate. Attached Figure Description
[0016] Figure 1 This is a structural schematic diagram of the left and right mudguard components.
[0017] Figure 2 This is a schematic diagram of the workpiece structure before this process.
[0018] Figure 3 This is a schematic diagram of the lower mold structure of this mold.
[0019] Figure 4 This is a schematic diagram of the upper mold structure of this mold.
[0020] In the diagram: 1 Upper mold base, 2 Lower mold base, 3 Lower mounting plate, 4 Lower material support block, 5 Elastic ejector pin, 6 Elastic positioning pin; 7 Floating material support block, 8 Positioning pin, 9 Lower cutting blade block, 10 Lower guide cutting block; 11 Filling block; 12 Mounting base plate, 13 Positioning square column, 14 Upper mounting plate, 15 Positioning thin plate, 16 Upper forming block, 17 Positioning flat key, 18 Upper cutting blade block, 19 Upper cutting guide block. Detailed Implementation
[0021] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0022] like Figure 1-4 As shown, the final stamping die for the mudguard includes an upper die base 1 and a lower die base 2. The lower die base 2 has a lower mounting plate 3, and the lower mounting plate 3 has a lower mounting groove. A pair of lower support blocks 4, matching the shape of the workpiece, are located in the lower mounting groove. Several elastic ejector pins 5 are provided on the lower mounting plate 3 corresponding to the outer periphery of the lower support blocks 4. Two pairs of elastic locating pins 6, each extending through one of the two lower support blocks 4, and matching the through holes in the workpiece, are located in the lower mounting groove.
[0023] A floating support block 7 is movably mounted on the lower mounting plate 3 within the lower support block 4. The floating support block 7 is located at the end of the lower support block 4 away from the left and right parts connecting parts. A positioning pin 8 is provided on the lower mounting plate 3, which protrudes from the floating support block 7. The lower support block 4 is provided with a mounting groove, and a lower cutting blade 9 for cutting off the left and right parts connecting parts is provided in the mounting groove. The lower cutting blade 9 is smaller than the size of the mounting groove. Lower guide cutting blocks 10 are provided on both sides of the part of the workpiece to be cut in the lower mounting groove. Several filling blocks 11 are provided on the outer periphery of the lower support block 4 in the lower mounting groove to restrict the position of the lower support block 4 and prevent it from shifting.
[0024] The upper mold base 1 is provided with a mounting base plate 12. Positioning square posts 13 are respectively provided at the four corners of the mounting base plate 12. An upper mounting plate 14 is provided on the mounting base plate 12. The upper mounting plate 14 has guide slots that mate with the four positioning square posts 13. Positioning thin plates 15 are detachably provided on the two surfaces of the positioning square posts 13 that mate with the upper mounting plate 14. Two upper forming blocks 16 are arranged side-by-side on the upper mounting plate 14. The upper mounting plate 14 is connected to the upper forming blocks 16 by four positioning flat keys 17 arranged in a cross pattern.
[0025] The upper forming block 16 is provided with a forming pressure surface that matches the finished workpiece. The upper mounting plate 14 is provided with an upper cutting blade block 18 for cutting off the connecting part of the left and right parts between the two upper forming blocks 16. The upper mounting plate 14 is provided with upper cutting guide blocks 19 on both sides of the upper cutting blade block 18.
[0026] 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 scope of protection of the present invention.
Claims
1. A final stamping die for a mudguard, comprising an upper die base and a lower die base, wherein a lower mounting plate is provided on the lower die base, a lower mounting groove is provided on the lower mounting plate, and a pair of lower support blocks that match the shape of the workpiece are provided in the lower mounting groove, characterized in that: The lower mounting plate has a floating support block movably mounted in the lower support block. The floating support block is located at the end of the lower support block away from the left and right parts connecting part. The lower mounting plate has a positioning pin that passes through the floating support block. The lower support block has a mounting groove. The mounting groove has a lower cutting blade block that cuts the left and right parts connecting part. The lower cutting blade block is smaller than the size of the mounting groove. The lower mounting groove has lower guide cutting blocks on both sides corresponding to the part of the workpiece to be cut. The lower mounting groove has several filling blocks on the outer periphery of the lower support block to limit the position of the lower support block and prevent it from shifting. The upper mold base has a mounting base plate. The mounting base plate has positioning square posts at the four corners. The mounting base plate has an upper mounting plate. The upper mounting plate has guide grooves that cooperate with the four positioning square posts. The upper mounting plate has two upper forming blocks arranged side by side. The upper forming blocks have forming pressure surfaces that cooperate with the finished workpiece. The upper mounting plate has an upper cutting blade block for cutting the left and right parts connecting part between the two upper forming blocks. The upper mounting plate has upper cutting guide blocks on both sides of the upper cutting blade block.
2. The final stamping die for a mudguard as described in claim 1, characterized in that: The upper mounting plate is connected to the upper molding block by four positioning flat keys, which are arranged in a cross shape.
3. The final stamping die for a mudguard as described in claim 2, characterized in that: Positioning plates are detachably provided on the two surfaces of the positioning column that mate with the upper mounting plate.
4. The final stamping die for a mudguard as described in claim 3, characterized in that: The lower mounting plate is provided with several elastic top pins corresponding to the outer periphery of the lower support block.
5. The final stamping die for a mudguard as described in claim 4, characterized in that: The lower mounting groove is provided with two pairs of elastic positioning pins that protrude from the two lower support blocks and cooperate with the through holes on the workpiece.