Mechanical part forming stamping die

Abstract

The invention provides a mechanical part forming stamping die which comprises a base, four guide columns are fixedly connected to the base, sliding blocks are slidably connected to the guide columns, sliding sleeves slidably connected with the guide columns are fixedly connected to the bottom ends of the sliding blocks, four fixing sleeves are fixedly connected to the base, and supporting plates are slidably connected to the interiors of the fixing sleeves. A connecting strip is slidably connected between every two adjacent fixing sleeves, the connecting strips are fixedly connected with the supporting plate, the bottom ends of the connecting strips are fixedly connected with sliding rods slidably connected with the base, an adjusting plate is slidably connected into the base, the four sliding rods are fixedly connected with the adjusting plate, and a first screw rod is rotatably connected to the base. The first screw rod is in threaded connection with the adjusting plate, a pressing plate is slidably connected into the fixing sleeve, and a first spring is clamped between the pressing plate and the supporting plate. The buffer spring with damaged elasticity is compressed and compensated through the adjusting structure, the effective buffer force of the buffer spring is recovered, and frequent replacement of the spring is not needed.

Description

Technical Field

[0001] This invention belongs to the field of stamping die structure design technology, and specifically relates to a stamping die for forming mechanical parts. Background Technology

[0002] In the stamping process of mechanical parts, buffer springs are key components to ensure stamping quality. They absorb the impact force of stamping through their own elastic deformation, preventing parts from deforming or being damaged due to excessive impact.

[0003] However, the buffer springs of stamping dies are subjected to repeated compression and reset cycles over a long period of time, which can easily lead to metal fatigue and damage to the elasticity (reduction of elasticity). At this time, the buffering effect will be significantly weakened, which manifests as an increase in the stamping deformation rate of parts and a decrease in stamping accuracy. Traditional dies do not have a targeted adjustment structure and can only be solved by replacing the spring, which requires stopping the machine to disassemble and replace it, affecting the continuity of production. Summary of the Invention

[0004] The purpose of this invention is to provide a stamping die for forming mechanical parts in order to solve the above-mentioned problems. By adjusting the structure, the buffer spring with damaged elasticity is compressed and compensated to restore its effective buffering force, without the need for frequent spring replacement.

[0005] The present invention achieves the above objectives through the following technical solutions: A stamping die for forming mechanical parts includes a base, four guide pillars fixedly connected to the base, a stamping structure on the four guide pillars, a fixed plate, a fixed plate fixedly connected to the four guide pillars, a slider slidably connected to the guide pillars, a sliding sleeve fixedly connected to the bottom end of the slider and slidably connected to the guide pillar, four fixed sleeves fixedly connected to the base, the sliding sleeves slidably connected to the fixed sleeves, a support plate slidably connected inside the fixed sleeves, an adjustment structure on the base, the adjustment structure including a connecting strip, a connecting strip slidably connected between two adjacent fixed sleeves, the connecting strip fixedly connected to the support plate, a sliding rod fixedly connected to the bottom end of the connecting strip and slidably connected to the base, an adjustment plate slidably connected inside the base, four sliding rods fixedly connected to the adjustment plate, a first screw rotatably connected to the base, the first screw threadedly connected to the adjustment plate, a pressure plate slidably connected inside the fixed sleeves, the pressure plate abutting against the sliding sleeve, and a first spring clamping between the pressure plate and the support plate.

[0006] In a preferred embodiment, a slide plate is fixedly connected between the four sliders, a top mold is mounted on the slide plate via a second mounting structure, a bottom mold is mounted on the base via a first mounting structure, a driving component is fixedly connected to the fixed plate, and the telescopic end of the driving component is fixedly connected to the slide plate.

[0007] In a preferred embodiment, a scale block is fixedly connected to the pressure plate, the scale block is slidably connected to the fixed sleeve, and a scale is fixedly connected to the fixed sleeve. The scale block and the scale are used in conjunction.

[0008] As a preferred embodiment, the first mounting structure includes two first slide rails. Two L-shaped first slide rails are fixedly connected to the base. A T-shaped bottom mold is slidably connected between the two first slide rails. A first baffle is fixedly connected to the two first slide rails. The bottom mold abuts against the first baffle.

[0009] As a preferred embodiment, the base is slidably connected to two L-shaped clamping plates, and the base is rotatably connected to a second screw. The threads at both ends of the second screw are in opposite directions. The second screw is threadedly connected to the clamping plates, and the clamping plates are slidably connected to the first slide rail. The bottom mold is provided with two first slots, and the clamping plates engage with the first slots.

[0010] As a preferred embodiment, the end of the second screw is slidably connected to a rotating rod with an "I"-shaped cross-section, and the rotating rod is perpendicular to the direction of the second screw.

[0011] As a preferred embodiment, the base is internally fixedly connected to a guide shaft, and the card plate is slidably connected to the guide shaft.

[0012] As a preferred embodiment, the second mounting structure includes a second slide rail. Two L-shaped second slide rails are fixedly connected to the slide plate. A top mold is slidably connected between the two second slide rails. A second baffle is fixedly connected to the two second slide rails. The top mold abuts against the second baffle.

[0013] As a preferred embodiment, a mounting sleeve is fixedly connected to the slide plate, a locking rod is slidably connected inside the mounting sleeve, a second locking groove is provided on the top mold, the locking rod engages with the second locking groove, a second spring is fixedly connected between the locking rod and the mounting sleeve, and a lifting block is fixedly connected to the top of the locking rod.

[0014] As a preferred embodiment, the bottom mold is provided with multiple ejection structures, each ejection structure including an ejector rod. Multiple ejector rods are slidably connected to the bottom mold. Multiple stroke cavities are provided inside the bottom mold. An anti-detachment ring is fixedly connected to the ejector rod. A fixing ring is fixedly connected inside the stroke cavity. A third spring is fixedly connected between the ejector rod and the bottom mold. The distance between the bottom surface of the anti-detachment ring and the top surface of the fixing ring is equal to the distance between the top surface of the ejector rod and the bottom surface of the groove in the bottom mold.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention features four guide pillars fixedly connected to a base, with sliders slidably connected to the guide pillars. The bottom ends of the sliders are fixedly connected to sliding sleeves that are slidably connected to the guide pillars. Four fixed sleeves are fixedly connected to the base, with support plates slidably connected inside each sleeve. A connecting strip slidably connects between adjacent fixed sleeves and is fixedly connected to the support plate. The bottom end of the connecting strip is fixedly connected to a sliding rod that is slidably connected to the base. An adjusting plate slidably connects inside the base, with the four sliding rods fixedly connected to the adjusting plate. A first screw is rotatably connected to the base and threadedly connected to the adjusting plate. A pressure plate slidably connects inside each fixed sleeve, and a first spring is clamped between the pressure plate and the support plate. This adjustment structure compresses and compensates for damaged buffer springs, restoring their effective buffering force without the need for frequent spring replacements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A. Figure 3 This is a schematic diagram of the connection structure between the base and the first mounting structure of the present invention; Figure 4 for Figure 4 The diagram shown is an enlarged view of the structure of section B. Figure 5 This is a schematic diagram of the connection structure between the first screw and the adjusting plate of the present invention; Figure 6 for Figure 5 The diagram shows an enlarged view of section C. Figure 7 This is a schematic diagram of the connection structure between the drive component and the slide plate of the present invention; Figure 8 for Figure 7 The diagram shown is an enlarged view of the structure of part D. Figure 9 for Figure 7 The diagram shows an enlarged view of the E-section structure.

[0017] The figure shows: 1. Base; 2. Guide post; 3. Stamping structure; 301. Fixing plate; 302. Slider; 303. Slide plate; 304. Bottom mold; 305. Top mold; 306. Sliding sleeve; 307. Fixing sleeve; 308. Support plate; 309. First spring; 310. Driving component; 4. Adjusting structure; 401. Connecting bar; 402. Sliding rod; 403. Adjusting plate; 404. First screw; 405. Pressure plate; 406. Marker block; 407. Scale; 5. First mounting structure; 50 1. First slide rail; 502. First baffle; 503. Clamping plate; 504. First slot; 505. Second screw; 506. Rotating rod; 507. Guide shaft; 6. Second mounting structure; 601. Second slide rail; 602. Second baffle; 603. Mounting sleeve; 604. Clamping rod; 605. Second slot; 606. Lifting block; 607. Second spring; 7. Ejection structure; 701. Push rod; 702. Stroke cavity; 703. Anti-detachment ring; 704. Third spring; 705. Fixing ring. 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 Figures 1 to 9As shown, this embodiment of the invention provides a stamping die for forming mechanical parts, specifically including a base 1, four guide pillars 2 fixedly connected to the base 1, a stamping structure 3 provided on the four guide pillars 2, the stamping structure 3 including a fixing plate 301, the fixing plate 301 fixedly connected to the four guide pillars 2, a slider 302 slidably connected to the guide pillars 2, a sliding sleeve 306 fixedly connected to the bottom end of the slider 302 and slidably connected to the guide pillar 2, four fixing sleeves 307 fixedly connected to the base 1, the sliding sleeves 306 and the fixing sleeves 307 slidably connected, a support plate 308 slidably connected inside the fixing sleeves 307, an adjusting structure 4 provided on the base 1, the adjusting structure 4 including a connecting strip 401, a connecting strip 401 slidably connected between two adjacent fixing sleeves 307, the connecting strip 401 fixedly connected to the support plate 308, and a support plate 308 fixedly connected to the bottom end of the connecting strip 401 and the guide pillar 308. The base 1 is slidably connected to a slide rod 402, and an adjusting plate 403 is slidably connected inside the base 1. Four slide rods 402 are fixedly connected to the adjusting plate 403. A first screw 404 is rotatably connected to the base 1 and threadedly connected to the adjusting plate 403. A pressure plate 405 is slidably connected inside the fixing sleeve 307, and the pressure plate 405 abuts against the slide sleeve 306. A first spring 309 is clamped between the pressure plate 405 and the support plate 308. According to the initial requirements of the parts to be stamped, rotating the first screw 404 causes the support plate 308 to move slightly upward through the adjusting plate 403 and the slide rods 402, so that the first spring 309 reaches the initial compression amount (confirmed by the position of the scale block 406 on the scale 407), ensuring the initial buffering effect. When the mold is used continuously for a period of time, if the deformation rate of the parts increases during stamping, the slide sleeve 306 will have a "jerking" feeling when it presses down. If the buffering force is insufficient, activate the spring compensation operation, stop the machine, and ensure that the slide plate 303 is in the upward reset state (the slide sleeve 306 is not pressing the pressure plate 405). Turn the first screw 404 with an Allen wrench to slowly move the adjusting plate 403 upward. The adjusting plate 403 pulls the connecting strip 401 upward through the slide rod 402, which in turn moves the support plate 308 upward, further compressing the first spring 309. Observe the movement of the scale block 406 on the scale 407 to control the compensation amount. After compensation, start the test stamping and test the parts. If the deformation rate returns to normal, the compensation is in place. If deformation still occurs, continue to turn the first screw 404 slightly to increase the compression (increase the scale by a little each time) until the buffering effect is restored.

[0020] Please see Figures 1 to 9As shown, a slide plate 303 is fixedly connected between the four sliders 302. A top mold 305 is mounted on the slide plate 303 via a second mounting structure 6. A bottom mold 304 is mounted on the base 1 via a first mounting structure 5. A driving component 310 is fixedly connected to the fixed plate 301. The telescopic end of the driving component 310 is fixedly connected to the slide plate 303, facilitating quick installation and removal of the top mold 305 via the second mounting structure 6 and quick installation and removal of the bottom mold 304 via the first mounting structure 5. A scale block 406 is fixedly connected to the pressure plate 405. The scale block 406 is slidably connected to the fixed sleeve 307. A scale 407 is fixedly connected to the fixed sleeve 307. The scale block 406 and the scale 407 work together to visually indicate the spring force compensation of the first spring 309.

[0021] Please see Figures 1 to 9 As shown, the first mounting structure 5 includes two first slide rails 501. Two L-shaped first slide rails 501 are fixedly connected to the base 1. A T-shaped bottom mold 304 is slidably connected between the two first slide rails 501. A first baffle 502 is fixedly connected to the two first slide rails 501, and the bottom mold 304 abuts against the first baffle 502. Two L-shaped clamping plates 503 are slidably connected to the base 1. A second screw 505 is rotatably connected to the base 1. The threads at both ends of the second screw 505 are in opposite directions. The second screw 505 is threadedly connected to the clamping plate 503, and the clamping plate 503 is slidably connected to the first slide rail 501. The bottom mold 304 has two first slots 504, and the clamping plate 503 is slidably connected to the first slide rail 501. A slot 504 engages; a rotating rod 506 with an "I"-shaped cross-section is slidably connected to the end of the second screw 505, and the rotating rod 506 is perpendicular to the direction of the second screw 505; a guide shaft 507 is fixedly connected inside the base 1, and the clamping plate 503 is slidably connected to the guide shaft 507; when the bottom mold 304 needs to be replaced, the second screw 505 can be rotated. Since the threads at both ends of the second screw 505 are opposite, the two clamping plates 503 can slide in opposite directions or towards each other. The setting of the guide shaft 507 improves the stability of the sliding of the clamping plate 503. The clamping plate 503 disengages from the first slot 504, and the old bottom mold 304 is pulled out along the first slide rail 501. After the new bottom mold 304 is installed, the second screw 505 is rotated in the opposite direction to fix it.

[0022] Please see Figures 1 to 9As shown, the second mounting structure 6 includes a second slide rail 601. Two L-shaped slide rails 601 are fixedly connected to the slide plate 303. A top mold 305 is slidably connected between the two slide rails 601. A second baffle 602 is fixedly connected to the two slide rails 601, and the top mold 305 abuts against the second baffle 602. A mounting sleeve 603 is fixedly connected to the slide plate 303. A cross-shaped locking rod 604 is slidably connected inside the mounting sleeve 603. A second slot 605 is provided on the top mold 305. The locking rod 604 engages with the second slot 605. A second spring 607 is fixedly connected between the locking rod 604 and the mounting sleeve 603. A lifting block 606 is fixedly connected to the top of the locking rod 604. When replacing the top mold 305... Pull the lifting block 606 upwards. The lifting block 606 drives the locking rod 604 to slide upwards along the axis of the mounting sleeve 603, compressing the second spring 607 until the bottom end of the locking rod 604 is completely retracted into the mounting sleeve 603, so as to avoid obstructing the insertion of the top mold 305. Push the top mold 305 in along the length direction of the second slide rail 601 until the side of the top mold 305 is completely abutting against the second baffle 602. At this time, the second slot 605 of the top mold 305 is aligned with the position of the locking rod 604. Slowly release the lifting block 606. The second spring 607 returns to its original position under the action of elastic force, pushing the locking rod 604 to slide downwards along the axis of the mounting sleeve 603 until the bottom end of the locking rod 604 is completely inserted into the second slot 605 of the top mold 305, thus locking the top mold 305 and installing and replacing the mold.

[0023] Please see Figures 1 to 9As shown, the bottom mold 304 is provided with multiple ejection structures 7, each including an ejector rod 701. Multiple ejector rods 701 are slidably connected to the bottom mold 304. Multiple stroke cavities 702 are provided inside the bottom mold 304. Anti-detachment rings 703 are fixedly connected to the ejector rods 701. Fixed rings 705 are fixedly connected inside the stroke cavities 702. A third spring 704 is fixedly connected between the ejector rods 701 and the bottom mold 304. The distance between the bottom surface of the anti-detachment ring 703 and the top surface of the fixed ring 705 is equal to the distance between the top surface of the ejector rod 701 and the bottom surface of the groove in the bottom mold 304. When the stamping power device is activated, the sliding plate 303 drives the top mold 305 downwards. The top mold 305 contacts and presses down on the parts, and the parts exert downward pressure on the top of the ejector rods 701, pushing the ejector rods 701. The anti-detachment ring 703 slides downward along the bottom mold 304, and moves downward with the ejector rod 701, compressing the third spring 704. When the top mold 305 is pressed down to the lowest position to complete the stamping, the bottom surface of the anti-detachment ring 703 abuts against the top surface of the fixed ring 705, and the ejector rod 701 stops moving downward. At this time, the top end of the ejector rod 701 is completely retracted into the stamping groove, which does not affect the forming of the part. After the stamping is completed, the drive component 310 (preferably a hydraulic rod) drives the slide plate 303 and the top mold 305 to reset upward, and the top mold 305 is separated from the part. The third spring 704 extends under the action of elasticity, pushes the anti-detachment ring 703 to move upward, and drives the ejector rod 701 to slide upward along the bottom mold 304. The top end of the ejector rod 701 contacts the bottom surface of the part and applies an upward ejection force to push the part out of the stamping groove.

[0024] When using this invention, firstly, according to the initial requirements of the parts to be stamped, the first screw 404 is rotated, and the support plate 308 is moved slightly upward through the adjusting plate 403 and the sliding rod 402, so that the first spring 309 reaches the initial compression amount (confirmed by the position of the scale block 406 on the scale 407), ensuring the initial buffering effect. After the mold has been used continuously for a period of time, if the deformation rate of the parts increases during stamping, and the "jerking sensation" when the sliding sleeve 306 is pressed down is weakened and the buffering force is insufficient, then the spring compensation operation should be activated. The machine should be stopped and the slide plate 303 should be ensured to be in the upward reset state (the sliding sleeve 306 should not be pressing the pressure plate 405). The first screw 404 should be turned by the Allen wrench to drive the adjusting plate 403 to move upward slowly. The adjusting plate 403 pulls the connecting strip 401 upward through the sliding rod 402, which in turn drives the support plate 308 to move upward, thus additionally compressing the first spring 309. The movement of the scale block 406 on the scale 407 should be observed to control the compensation amount. After compensation, a test stamping should be started, and the parts should be tested. If the deformation rate returns to normal, it means that the compensation is in place. If deformation still occurs, the first screw 404 should be turned slightly to increase the compression amount (increasing the scale by a little bit each time) until the buffering effect is restored. When the bottom mold 304 needs to be replaced, the second screw 505 can be rotated. Since the threads at both ends of the second screw 505 are in opposite directions, the two clamping plates 503 can slide in opposite directions or towards each other. The guide shaft 507 improves the stability of the sliding of the clamping plates 503. The clamping plates 503 disengage from the first clamping groove 504 and are pulled out along the first slide rail 501. After the new bottom mold 304 is installed, the second screw 505 is rotated in the opposite direction to fix it. When replacing the top mold 305, the lifting block 606 is pulled upward. The lifting block 606 drives the clamping rod 604 to slide upward along the axis of the mounting sleeve 603, compressing the second spring 607. The bottom end of the locking rod 604 is fully retracted into the mounting sleeve 603 to avoid obstructing the insertion of the top mold 305; the top mold 305 is pushed in along the length of the second slide rail 601 until the side of the top mold 305 is fully in contact with the second baffle 602. At this time, the second slot 605 of the top mold 305 is aligned with the position of the locking rod 604; the lifting block 606 is slowly released, and the second spring 607 is reset under the action of elastic force, pushing the locking rod 604 to slide downward along the axis of the mounting sleeve 603 until the bottom end of the locking rod 604 is fully inserted into the second slot 605 of the top mold 305, thus completing the locking of the top mold 305, and then the mold is installed and replaced; When the stamping power unit is started, the slide plate 303 drives the top die 305 to move downward. The top die 305 contacts the part and presses down. The part exerts downward pressure on the top of the ejector rod 701, pushing the ejector rod 701 to slide downward along the bottom die 304. The anti-detachment ring 703 moves downward with the ejector rod 701, compressing the third spring 704. When the top die 305 is pressed down to the lowest position to complete the stamping, the bottom surface of the anti-detachment ring 703 abuts against the top surface of the fixed ring 705, and the ejector rod 701 stops moving downward. At this time, the top of the ejector rod 701 is completely retracted into the stamping groove, which does not affect the forming of the part. After the stamping is completed, the drive component 310 (preferably a hydraulic rod) drives the slide plate 303 and the top die 305 to return to their original positions. The top die 305 disengages from the part. The third spring 704 extends under the action of elasticity, pushing the anti-detachment ring 703 to move upward, driving the ejector rod 701 to slide upward along the bottom die 304. The top of the ejector rod 701 contacts the bottom surface of the part and applies an upward ejection force, pushing the part out of the stamping groove.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stamping die for forming mechanical parts, comprising a base (1), characterized in that: Four guide posts (2) are fixedly connected to the base (1). A stamping structure (3) is provided on the four guide posts (2). The stamping structure (3) includes a fixing plate (301). The fixing plate (301) is fixedly connected to the four guide posts (2). A slider (302) is slidably connected to the guide posts (2). A sliding sleeve (306) is fixedly connected to the bottom end of the slider (302) and is slidably connected to the guide post (2). Four fixing sleeves (307) are fixedly connected to the base (1). The sliding sleeve (306) is slidably connected to the fixing sleeve (307). A support plate (308) is slidably connected inside the fixing sleeve (307). An adjustment structure (4) is provided on the base (1). The adjustment structure (4) includes a connecting strip (401). Two adjacent... A connecting strip (401) is slidably connected between the fixed sleeves (307). The connecting strip (401) is fixedly connected to the support plate (308). The bottom end of the connecting strip (401) is fixedly connected to a slide rod (402) that is slidably connected to the base (1). An adjusting plate (403) is slidably connected inside the base (1). The four slide rods (402) are fixedly connected to the adjusting plate (403). A first screw (404) is rotatably connected to the base (1). The first screw (404) is threadedly connected to the adjusting plate (403). A pressure plate (405) is slidably connected inside the fixed sleeves (307). The pressure plate (405) abuts against the slide sleeve (306). A first spring (309) is clamped between the pressure plate (405) and the support plate (308).

2. The mechanical parts forming stamping die according to claim 1, characterized in that: A slide plate (303) is fixedly connected between the four sliders (302). A top mold (305) is installed on the slide plate (303) through a second mounting structure (6). A bottom mold (304) is installed on the base (1) through a first mounting structure (5). A drive component (310) is fixedly connected to the fixed plate (301). The telescopic end of the drive component (310) is fixedly connected to the slide plate (303).

3. The mechanical parts forming stamping die according to claim 1, characterized in that: A scale block (406) is fixedly connected to the pressure plate (405). The scale block (406) is slidably connected to the fixing sleeve (307). A scale (407) is fixedly connected to the fixing sleeve (307). The scale block (406) and the scale (407) are used together.

4. The mechanical parts forming stamping die according to claim 2, characterized in that: The first mounting structure (5) includes two first slide rails (501). Two L-shaped first slide rails (501) are fixedly connected to the base (1). A T-shaped bottom mold (304) is slidably connected between the two first slide rails (501). A first baffle (502) is fixedly connected to the two first slide rails (501). The bottom mold (304) abuts against the first baffle (502).

5. A stamping die for forming mechanical parts according to claim 4, characterized in that: The base (1) is slidably connected to two L-shaped clamping plates (503). The base (1) is rotatably connected to a second screw (505). The threads at both ends of the second screw (505) are opposite in direction. The second screw (505) is threadedly connected to the clamping plate (503). The clamping plate (503) is slidably connected to the first slide rail (501). The bottom mold (304) is provided with two first slots (504). The clamping plate (503) engages with the first slots (504).

6. A stamping die for forming mechanical parts according to claim 5, characterized in that: The end of the second screw (505) is slidably connected to a rotating rod (506) with an "I" shaped cross section, and the rotating rod (506) is perpendicular to the direction of the second screw (505).

7. A stamping die for forming mechanical parts according to claim 5, characterized in that: The base (1) is internally fixedly connected to a guide shaft (507), and the card plate (503) is slidably connected to the guide shaft (507).

8. A stamping die for forming mechanical parts according to claim 2, characterized in that: The second mounting structure (6) includes a second slide rail (601), and two L-shaped second slide rails (601) are fixedly connected to the slide plate (303). A top mold (305) is slidably connected between the two second slide rails (601), and a second baffle (602) is fixedly connected to the two second slide rails (601). The top mold (305) abuts against the second baffle (602).

9. A stamping die for forming mechanical parts according to claim 8, characterized in that: An mounting sleeve (603) is fixedly connected to the sliding plate (303). A locking rod (604) is slidably connected inside the mounting sleeve (603). A second locking groove (605) is provided on the top mold (305). The locking rod (604) engages with the second locking groove (605). A second spring (607) is fixedly connected between the locking rod (604) and the mounting sleeve (603). A lifting block (606) is fixedly connected to the top of the locking rod (604).

10. A stamping die for forming mechanical parts according to claim 2, characterized in that: The bottom mold (304) is provided with multiple ejection structures (7), each ejection structure (7) including an ejector rod (701). Multiple ejector rods (701) are slidably connected to the bottom mold (304). Multiple stroke cavities (702) are provided inside the bottom mold (304). An anti-detachment ring (703) is fixedly connected to the ejector rod (701). A fixing ring (705) is fixedly connected inside the stroke cavity (702). A third spring (704) is fixedly connected between the ejector rod (701) and the bottom mold (304). The distance between the bottom surface of the anti-detachment ring (703) and the top surface of the fixing ring (705) is equal to the distance between the top surface of the ejector rod (701) and the bottom surface of the groove of the bottom mold (304).

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