A stamping die mechanism with punch wear compensation

Abstract

The application discloses a stamping die mechanism with punch wear compensation, which comprises a connecting plate, a lower die assembly is arranged on the top of the connecting plate, a moving plate is arranged above the connecting plate, and a lower die assembly is arranged on the bottom of the moving plate. The stamping die mechanism has the punch wear compensation function in the process of use through the cooperation of the connecting plate, the moving plate, the upper die body, the fixing column, the stamping block, the compensation block, the lower die body, the stamping port, the inclined port, the stabilizing column, the track, the sliding block, the cross rod, the clamping plate, the plug block, the recess block, the bolt one, the supporting plate, the supporting column, the assembly groove, the fixing shaft, the limiting frame, the half cylinder, the sliding groove, the pressing plate and the bolt two. The surface of one fixing column is provided with a stamping block, and a plurality of compensation blocks are further arranged. After the edge of the stamping block is worn, the compensation blocks can be manually adjusted and replaced to the stamping working position, so that the punch or the upper die does not need to be replaced as a whole, the maintenance cost is low, and the stamping die mechanism is convenient to use.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, specifically to a stamping die mechanism with punch wear compensation. Background Technology

[0002] Stamping dies are special process equipment used in cold stamping to process materials (metal or non-metal) into parts (or semi-finished products). Stamping is a pressure processing method that uses dies mounted on a press to apply pressure to materials at room temperature, causing separation or plastic deformation to obtain the desired parts. Currently, existing stamping dies lack wear compensation functions for the processing punches on the upper die. With prolonged stamping work, the edges of the punches will wear down, requiring complete replacement, resulting in high maintenance costs and inconvenience.

[0003] A search revealed a stamping die for metal parts, with publication number CN221246709U. The die includes a stamping equipment body, a die body placed on the table of the stamping equipment body, side blocks on both sides of the die body in the width direction, and a mounting base fixedly connected to the table of the stamping equipment body. A rotating shaft is rotatably connected inside the mounting base. This technical solution also has the aforementioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a stamping die mechanism with punch wear compensation to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a stamping die mechanism with punch wear compensation, comprising a connecting plate, a lower die assembly mounted on the top of the connecting plate, a moving plate disposed above the connecting plate, a lower die assembly mounted on the bottom of the moving plate, an upper die assembly comprising an upper die body, a plurality of fixed posts fixedly connected to the bottom of the upper die body, stamping blocks sleeved on the surface of the fixed posts, and a plurality of compensation blocks movably sleeved above the fixed posts.

[0006] Optionally, the lower die assembly includes a lower die body, which is fixedly installed on the top of the connecting plate. The top of the lower die body is machined with a stamping port for use with the stamping block, and the lower die body is machined with an inclined opening.

[0007] Optionally, a plurality of stabilizing columns are fixedly connected to the top of the connecting plate, and the moving plate is slidably connected to the surface of the stabilizing columns.

[0008] Optionally, the upper mold assembly further includes a track, which is fixedly connected to a notch on the side of the fixed column. A slider is slidably connected to the surface of the track, and a clamping plate is connected to the side of the slider via a crossbar.

[0009] Optionally, the side of the card plate is fixedly connected to an insert block, and both the stamping block and the compensation block are fixedly connected to a groove block. The insert block is movably inserted into the corresponding groove block, and a bolt is provided on the card plate, which is threadedly connected to the track.

[0010] Optionally, a support plate is rotatably connected to the card plate, and a support column is fixedly connected to one side of the support plate, with the support column resting on the bottom of the compensation block.

[0011] Optionally, the side of the card plate is provided with an assembly groove, and a fixed shaft is fixedly connected to the inner wall of the assembly groove. The support plate is rotatably connected to the surface of the fixed shaft.

[0012] Optionally, a limiting frame is slidably connected to the side of the card plate, and a semi-cylinder is fixedly connected to the inner wall of the limiting frame, with the semi-cylinder abutting against the support plate.

[0013] Optionally, the card plate is provided with a sliding groove, and the end of the limiting frame is slidably connected in the sliding groove.

[0014] Optionally, a pressure plate is provided above the card plate, and a second bolt is provided on the pressure plate. The second bolt is threaded onto the card plate, and a protrusion is fixedly connected to the bottom of the pressure plate. The bottom of the protrusion presses against the top of the limiting frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the mutual cooperation of a connecting plate, a moving plate, an upper die body, a fixed column, a stamping block, a compensation block, a lower die body, a stamping opening, an inclined opening, a stabilizing column, a track, a slider, a crossbar, a clamping plate, an insert block, a groove block, a bolt one, a support plate, a support column, an assembly groove, a fixed shaft, a limit frame, a semi-cylinder, a sliding groove, a pressure plate, and a bolt two, enables the stamping die to have a punch wear compensation function during use. The surface of a fixed column has a stamping block and multiple compensation blocks. After the edge of the stamping block wears, it can be manually adjusted and the compensation block can be replaced to the stamping working position without replacing the entire punch or upper die. This results in low maintenance costs and convenient use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the front view of the present invention; Figure 2 This is a three-dimensional structural diagram of the invention from a bottom view; Figure 3 This is a three-dimensional structural schematic diagram of the front view of the upper mold component of the present invention; Figure 4 This is a three-dimensional structural schematic diagram of the upper mold component of the present invention (bottom view). Figure 5 This is a first-view three-dimensional structural diagram of the stamping block and compensation block of the present invention. Figure 6 This is a two-dimensional structural diagram of the stamping block and compensation block of the present invention from a second perspective. Figure 7 This is a first-view exploded perspective view of the fixed column and stamping block structures of the present invention. Figure 8 This is a two-dimensional exploded view of the structure of the fixed column and stamping block of the present invention from a second perspective. Figure 9 This is a first-view perspective three-dimensional structural diagram of the card plate and fixing column of the present invention. Figure 10 This is a two-dimensional structural diagram of the card plate and fixing column of the present invention from a second perspective; Figure 11 This is a first-view three-dimensional structural diagram of the track and card plate of the present invention; Figure 12 This is a two-dimensional structural diagram of the track and card plate of the present invention from a second perspective; Figure 13 This is a three-dimensional structural diagram of the track and card plate of the present invention from a third-person perspective; Figure 14 This is a three-dimensional cross-sectional view of the lower mold assembly of the present invention; Figure 15 This is a three-dimensional cross-sectional schematic diagram of the insert block and recessed block of the present invention; Figure 16 This is a three-dimensional structural diagram of the fixed column and track of the present invention.

[0017] In the diagram: 1 Connecting plate, 2 Moving plate, 3 Upper mold body, 4 Fixed column, 5 Stamping block, 6 Compensation block, 7 Lower mold body, 8 Stamping port, 9 Inclined port, 10 Stabilizing column, 11 Track, 12 Slider, 13 Crossbar, 14 Clamping plate, 15 Insert block, 16 Groove block, 17 Bolt 1, 18 Support plate, 19 Support column, 20 Assembly slot, 21 Fixed shaft, 22 Limiting frame, 23 Semi-cylinder, 24 Slide groove, 25 Pressure plate, 26 Bolt 2, 27 Protrusion, 28 Reinforcing block, 29 Limiting block. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-16 A stamping die mechanism with punch wear compensation includes a connecting plate 1. Four through-hole blocks are fixedly connected to the side of the connecting plate 1. By using screws to pass through the through-holes on the through-hole blocks, the connecting plate 1 can be installed on the worktable of a hydraulic or other driving device. A lower die body 7 is fixedly installed on the top of the connecting plate 1. Mounting blocks are fixedly connected to the side of the lower die body 7. The mounting blocks are installed on the top of the connecting plate 1 by screws. During processing, the lower die body 7 has three stamping holes 8 formed on its top and inclined holes 9 formed on its side that communicate with the stamping holes 8. The stamped workpiece will fall through the stamping holes 8 and enter the inclined holes 9. The inclined surface inside the inclined holes 9 facilitates the workpiece to slide to the outside of the lower die body 7. Two reinforcing blocks 28 are also fixedly connected inside the lower die body 7. The reinforcing blocks 28 are used to reinforce the lower die body 7 and prevent the lower die body 7 from deforming due to the stamping force. The lower die body 7, the stamping holes 8 and the inclined holes 9 constitute the lower die assembly.

[0020] In practical applications, workpieces are usually provided with pre-drilled openings. A positioning pin is machined on the top of the lower die body 7. The machining opening on the workpiece passes through the positioning pin on the lower die body 7. Then, the upper die has a pre-drilled hole for the positioning pin (cylindrical rod). This ensures that the stamped workpiece will not shift. This is also existing technology. Therefore, the positioning pin and the pre-drilled hole on the upper die are not shown in the attached drawings of this technical solution.

[0021] Four stabilizing columns 10 are fixedly connected to the top of the connecting plate 1. Each stabilizing column 10 is a cylindrical long bar. A moving plate 2 slides on the surface of the four stabilizing columns 10. The top of the moving plate 2 is machined with four threaded openings. The threaded openings are designed to facilitate the connection of hydraulic or other linear drive mechanisms to the moving plate 2. The moving plate 2 can slide on the surface of the stabilizing columns 10. The arrangement of the four stabilizing columns 10 makes the up-and-down movement of the moving plate 2 more precise and stable.

[0022] The bottom of the moving plate 2 is fixedly mounted with an upper mold body 3. An mounting block is also fixedly connected to the side of the upper mold body 3. The mounting block is installed on the bottom of the moving plate 2 using screws. When the moving plate 2 moves, the upper mold body 3 moves accordingly. The bottom of the upper mold body 3 is integrally machined with three fixing posts 4. Each fixing post 4 has two notches machined on it, and a stamping block 5 is movably fitted onto the surface of each fixing post 4. The stamping block 5 is a frame structure; its outer edge mates with the stamping port 8 to perform stamping processing on the workpiece. Because stamping involves the outer edge being squeezed and broken, the hollow center of the stamping block 5 does not affect its use. (As shown in the figure...) The lower edge of the stamping block 5 slightly extends beyond the lower edge of the fixing post 4. Two compensation blocks 6 are also fitted onto the surface of the fixing post 4. The specifications of the compensation blocks 6 are the same as those of the stamping block 5. A track 11 is fixedly connected to the inner wall of the notch. A slider 12 is slidably connected to the surface of the track 11. The vertical cross-section of the track 11 is rectangular. This design ensures that the slider 12 will only slide on its surface and will not rotate. Two crossbars 13 are fixedly connected to the side of the slider 12. The side of the two crossbars 13 away from the slider 12 is fixedly connected by a clamping plate 14. Two inserts 15 are fixedly connected to the side of the clamping plate 14. The specific shape of the inserts 15 is as follows... Figure 15 As shown, the insert block 15 has two inclined surfaces, and the stamping block 5 and the compensation block 6 are both fixedly connected with groove blocks 16. There are twelve groove blocks 16 in total. Four groove blocks 16 are fixedly connected to the stamping block 5, and the other eight groove blocks 16 are fixedly connected to the two compensation blocks 6 respectively. The grooves on the groove blocks 16 also have two inclined surfaces. The insert block 15 is movably inserted into the corresponding groove block 16. The insert block 15 will become tighter and tighter as it is inserted, ensuring the installation stability of the stamping block 5. The clamping plate 14 is provided with a bolt 17. The bolt 17 passes through the clamping plate 14 and is threadedly connected to the rail 11. In this way, the clamping plate 14 and the rail 11 are connected and installed using the bolt 17. After unscrewing the bolt 17, the stamping block 5 can be removed from the surface of the fixed column 4. Then, the two compensation blocks 6 can be removed. Then, the stamping block 5 is installed at the top of the fixed column 4, and the compensation blocks 6 are installed. The insert block 15 is inserted into the groove block 16 on the compensation block 6, and the stamping work can be performed using the compensation block 6.

[0023] During the stamping process, there will be repeated up and down movements, so support is needed for the compensation block 6. During production, the clamping plate 14 is machined with two assembly slots 20 and two sliding grooves 24. A fixed shaft 21 is fixedly connected to the inner wall of each assembly slot 20. A support plate 18 is rotatably connected to the surface of the fixed shaft 21. The size of the assembly slot 20 is slightly larger than the width of the support plate 18, so the support plate 18 will only undergo a small displacement on the surface of the fixed shaft 21, but this does not affect its use. A support column 19 is fixedly connected to one side of the support plate 18. The support column 19 abuts against the bottom of the lower compensation block 6. After abutting against the lower compensation block 6, the groove block 16 at the top of the upper compensation block 6 will abut against the bottom of the moving plate 2. A limiting bracket 22 is provided between the two sliding grooves 24. The two end blocks of the limiting bracket 22 match the inner wall of the sliding groove 24. (See the attached instruction manual.) Figure 11 and 13 The shapes of the slide groove 24 and the end of the limiting frame 22 are clearly visible. When the limiting frame 22 is pulled straight away from the clamping plate 14, the limiting frame 22 will not disengage from the slide groove 24. When the limiting frame 22 is pushed upward, it can slide upward. Two semi-cylinders 23 are fixedly connected to the inner wall of the limiting frame 22. The semi-cylinders 23 abut against the support plate 18, and the support column 19 abuts against the bottom of the compensation block 6. In this way, the support plate 18 will not swing on the surface of the fixed shaft 21, and the compensation block 6 will be supported and will not slide on the surface of the fixed column 4. When the limiting frame 22 is in the state shown in the figure, the distance between its inner wall and the bolt 17 is very small. This can also effectively prevent the bolt 17 from accidentally reversing. In addition, the lower edge of the limiting frame 22 does not cover the entire nut of the bolt 17, and the lower part of the nut of the bolt 17 extends beyond the outside of the limiting frame 22.

[0024] A limiting block 29, shaped as shown in the figure, is fixedly connected to the top of the clamping plate 14. A pressure plate 25 is slidably connected to the surface of the limiting block 29. A protrusion 27 is fixedly connected to the bottom of the pressure plate 25, pressing against the top of the clamping plate 14 and restricting its upward movement. A bolt 26 is provided on the pressure plate 25, with its bottom end passing through the pressure plate 25 and threaded onto the clamping plate 14. As shown in the figure, the thread depth on the clamping plate 14 is reserved, meaning that there is still space for the bolt 26 to enter the clamping plate 14. The purpose of this design is to... This allows the pressure plate 25 and the protrusion 27 to have room to move downwards, ensuring that the limit frame 22 and the semi-cylinder 23 can press against the support plate 18, thereby ensuring a stable support state for the compensation block 6. The upper mold body 3, fixed column 4, stamping block 5, compensation block 6, track 11, slider 12, crossbar 13, clamping plate 14, insert block 15, groove block 16, bolt 17, support plate 18, support column 19, assembly groove 20, fixed shaft 21, limit frame 22, semi-cylinder 23, slide groove 24, pressure plate 25, bolt 26 and protrusion 27 constitute the lower mold assembly.

[0025] Finally, the materials used in this technical solution are all conventional high-strength metals, while the targeted workpieces are made of aluminum or other metals with relatively low hardness. This way, the recoil force during stamping will be smaller and will not affect the overall structural stability.

[0026] In the manufacturing process of this technical solution, only the stamping block 5 and the compensation block 6 need to be used in batches. The clamping plate 14 and the structure connected to it can be reused. The stamping block 5 and the compensation block 6 are consumables. The manufacturing cost is significantly lower than that of the overall mold manufacturing.

[0027] In use, the stamping block 5 is first used to stamp the workpiece. When the edge of the stamping block 5 wears, the operator uses a wrench or other tools to loosen bolt 26. Bolt 26 will move, and then the operator manually pushes the pressure plate 25. The pressure plate 25 and bolt 26 will disengage from pressing the limit bracket 22. Then, the operator manually moves the limit bracket 22, which will slide within the slide groove 24. The semi-cylinder 23 will then disengage, the support column 19 will disengage from pressing against the compensation block 6, and the limit bracket 22 will disengage from the obstruction 17. Then, the workers used tools to loosen bolt 17, which would disengage from track 11. Then, the workers directly pulled the clamping plate 14, which would cause the insert block 15 to disengage from the groove block 16 on the stamping block 5. Then, one or two compensation blocks 6 were removed from the fixing post 4, and the stamping block 5 was put on the fixing post 4. After that, the two compensation blocks 6 were put on the fixing post 4, and the compensation blocks 6 below the two compensation blocks 6 were locked. The reason why the stamping block 5 needs to be put back on the fixing post 4 is because the length of the support plate 18 is limited.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stamping die mechanism with punch wear compensation, comprising a connecting plate (1), characterized in that: The top of the connecting plate (1) is equipped with a lower mold assembly, the upper part of the connecting plate (1) is provided with a moving plate (2), the bottom of the moving plate (2) is equipped with a lower mold assembly, the upper mold assembly includes an upper mold body (3), the bottom of the upper mold body (3) is fixedly connected with a number of fixed columns (4), the surface of the fixed columns (4) is fitted with a stamping block (5), and a number of compensation blocks (6) are movably fitted above the fixed columns (4).

2. The stamping die mechanism with punch wear compensation according to claim 1, characterized in that: The lower die assembly includes a lower die body (7), which is fixedly installed on the top of the connecting plate (1). The top of the lower die body (7) is machined with a stamping port (8) for use with the stamping block (5), and the lower die body (7) is machined with an inclined port (9).

3. The stamping die mechanism with punch wear compensation according to claim 2, characterized in that: The top of the connecting plate (1) is fixedly connected to several stabilizing columns (10), and the moving plate (2) is slidably connected to the surface of the stabilizing columns (10).

4. The stamping die mechanism with punch wear compensation according to claim 3, characterized in that: The upper mold assembly also includes a track (11), which is fixedly connected to the notch on the side of the fixed column (4). A slider (12) is slidably connected to the surface of the track (11), and a clamping plate (14) is connected to the side of the slider (12) via a crossbar (13).

5. The stamping die mechanism with punch wear compensation according to claim 4, characterized in that: The side of the card plate (14) is fixedly connected with a plug (15), and the stamping block (5) and the compensation block (6) are both fixedly connected with a groove block (16). The plug (15) is movably inserted into the groove block (16) corresponding to it. The card plate (14) is provided with a bolt (17), which is threadedly connected to the track (11).

6. The stamping die mechanism with punch wear compensation according to claim 5, characterized in that: A support plate (18) is rotatably connected to the plate (14), and a support column (19) is fixedly connected to one side of the support plate (18). The support column (19) rests on the bottom of the compensation block (6).

7. The stamping die mechanism with punch wear compensation according to claim 6, characterized in that: The side of the card plate (14) is provided with an assembly groove (20), and a fixed shaft (21) is fixedly connected to the inner wall of the assembly groove (20). The support plate (18) is rotatably connected to the surface of the fixed shaft (21).

8. The stamping die mechanism with punch wear compensation according to claim 7, characterized in that: The side of the card plate (14) is slidably connected to a limiting frame (22), and a semi-cylinder (23) is fixedly connected to the inner wall of the limiting frame (22), and the semi-cylinder (23) abuts against the support plate (18).

9. The stamping die mechanism with punch wear compensation according to claim 8, characterized in that: The card plate (14) is provided with a sliding groove (24), and the end of the limiting frame (22) is slidably connected in the sliding groove (24).

10. The stamping die mechanism with punch wear compensation according to claim 9, characterized in that: A pressure plate (25) is provided above the card plate (14), and a bolt (26) is provided on the pressure plate (25). The bolt (26) is threadedly connected to the card plate (14). A protrusion (27) is fixedly connected to the bottom of the pressure plate (25), and the bottom of the protrusion (27) presses against the top of the limiting frame (22).

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