A blank rotation mechanism for a press die

Abstract

This application relates to a sheet metal rotation mechanism for a stamping die, comprising: a base, which is disposed on the lower die of the die and is arranged along the width direction of the lower die; a rotating seat, which is disposed on the base and is arranged along the length direction of the base, with a rotating pin vertically disposed at the middle position of the rotating seat along the length direction, the rotating pin being used to insert into a through hole on a mating sheet metal; a sliding block, which is slidably disposed on the rotating seat and slides along the width direction of the rotating seat, with a stop block disposed at the end of the sliding block away from the sheet metal feeding direction; a limiting hook, which is disposed on the side of the rotating seat near the sheet metal feeding direction, with the limiting hook at the end of the rotating seat and extending out of the rotating seat; and a driving assembly, which is used to drive the sliding block to slide, the driving assembly being linked with the upper die, and the driving assembly driving the sliding block to slide, causing the stop block to push the sheet metal to rotate around the rotating pin until it abuts against the limiting hook. This application improves the working efficiency of the stamping die.

Description

Technical Field

[0001] This application relates to the field of continuous stamping dies, and in particular to a sheet rotation mechanism for a stamping die. Background Technology

[0002] Stamping is a process in which pressure is applied to material at room temperature using a die mounted on a press, causing it to separate or undergo plastic deformation. A progressive die is a cold stamping die that uses a single strip of raw material to simultaneously complete multiple stamping operations at different stations on a single die. The strip of material moves a fixed distance, one stroke per operation, until the finished product is formed.

[0003] There is a sheet metal stamping part. The forming process of the sheet metal stamping part is as follows: cutting, rotating, and multiple stamping. During the stamping process, a robot arm conveys the sheet forward to finally obtain the product. (Refer to...) Figure 1 The sheet metal stamping part 01 is irregularly shaped and has through holes 02 before stamping.

[0004] Because the sheet material is irregularly shaped, cutting the strip directly results in more waste material between the two middle pieces, while cutting it at an angle saves more material. However, the sheet material needs to be aligned during stamping, so after cutting, it needs to be rotated at an angle before being conveyed to the stamping position for stamping.

[0005] Currently, the material sheet is usually rotated by a cylinder linkage mechanism, which requires multiple cylinders and auxiliary parts. This not only makes the structure more complex, but also results in the cylinders and molds being controlled separately. This leads to poor synchronization between the cylinder movements and the molds, requiring a reduction in the working speed to achieve seamless coordination between the two. This slow working speed affects the efficiency of the stamping mold. Summary of the Invention

[0006] In order to improve the working efficiency of stamping dies, this application provides a sheet rotation mechanism for stamping dies.

[0007] The blank rotation mechanism of the stamping die provided in this application adopts the following technical solution:

[0008] A sheet metal rotation mechanism for a stamping die includes: a base, the base being disposed on the lower die of the die, the base being disposed along the width direction of the lower die;

[0009] A rotating seat is mounted on a base and is arranged along the length of the base. A rotating pin is vertically arranged at the middle position of the rotating seat along the length of the base. The rotating pin is used to insert into the through hole on the mating material sheet.

[0010] A sliding block is slidably disposed on a rotating seat. The sliding block slides along the width direction of the rotating seat, and a stop block is provided on the end of the sliding block away from the material feeding direction.

[0011] A limiting hook is provided on the side of the rotating seat near the material feeding direction, at the end of the rotating seat, and extending out of the rotating seat.

[0012] A driving component is used to drive the sliding block to slide. The driving component is linked with the upper mold. The driving component is used to drive the sliding block to slide, so that the stop block pushes the material sheet to rotate around the rotating pin until the material sheet abuts against the limit hook.

[0013] By adopting the above technical solution, when the mold is opened, the robot places the cut material sheet on the rotating seat. Since the drive component and the upper mold are linked, when the mold is closed, the drive component drives the sliding block to slide to the preparatory position. The rotating pin is engaged with the through hole on the material sheet to achieve the positioning of the material sheet. Then, during the process of the mold being opened again, the stop on the sliding block pushes the material sheet to rotate around the rotating pin, thereby achieving the rotation of the material sheet.

[0014] This application eliminates the cylinder linkage mechanism, resulting in a simpler, more reliable, and more stable structure. Simultaneously, the drive component works synchronously with the mold, ensuring that the sheet metal rotation mechanism operates in sync with the mold, eliminating the need for matching time, increasing working speed, and improving the efficiency of the stamping die.

[0015] Optionally, the rotating base has a sliding groove, the sliding block is slidably disposed inside the sliding groove, the end of the sliding block away from the material feeding direction extends out of the rotating base, the base is provided with a support column for supporting the sliding block on the side away from the material feeding direction, and a reset groove is provided at the bottom of the sliding groove; the driving assembly includes a driven block connected to the sliding block, a driving block connected to the upper mold, and a reset nitrogen cylinder disposed inside the reset groove, the end of the sliding block extending out of the rotating base is connected to the driven block, the driven block is perpendicular to the sliding direction of the sliding block, the driving block is located between the rotating base and the driven block, the bottom of the driving block is provided with an inclined push surface on the side near the driven block, and the piston rod of the reset nitrogen cylinder is connected to the sliding block;

[0016] When the mold is closed, the upper mold drives the driving block to move closer to the lower mold, causing the inclined push surface to push the driven block to slide away from the rotating seat. When the mold is opened, the reset nitrogen cylinder drives the sliding block to slide and reset. During reset, the sliding block drives the stop block to push the material sheet to rotate around the rotating pin.

[0017] By adopting the above technical solution, using the drive block connected to the upper mold as the drive source, the driven block is directly pushed to slide through the inclined push surface during the downward movement of the drive block, thereby driving the sliding block to slide to the preparatory position. No additional power source is required, making the structure simpler. When the mold opens, the drive block moves upward to release the obstruction of the driven block, thereby allowing the reset nitrogen cylinder to directly drive the sliding block to slide and reset. During the reset process, the sliding block drives the stop block to push the material sheet to rotate around the rotating pin.

[0018] Meanwhile, the drive block moves synchronously with the upper mold, making the drive component more responsive and eliminating premature or delayed movements, which can improve the working speed and efficiency of the entire mold.

[0019] Optionally, the sliding block is a T-shaped block, and limit blocks are provided on both sides of the sliding block in the length direction. The limit blocks are detachably connected to the inside of the sliding groove, and the side of the limit block near the sliding block is provided with a limiting part for pressing the sliding block.

[0020] By adopting the above technical solution, the limiting block is detachably connected inside the sliding groove, and the entire sliding block can be easily removed after the limiting block is removed. The limiting part presses the sliding block, thereby limiting the sliding block and making it difficult for the sliding block to fall out of the sliding groove.

[0021] Optionally, the base has a groove along its length, the bottom of the rotating seat is slidably disposed inside the groove, and a pressing block is provided at one end of the rotating seat along its length. The pressing block is connected to the upper mold, and a guide slope is provided on the bottom of the pressing block near the rotating seat. When the mold is closed, the guide slope on the pressing block pushes the rotating seat to slide, and the rotating seat is reset by a nitrogen cylinder.

[0022] By adopting the above technical solution, the bottom of the rotating seat is slidably positioned inside the groove, guiding and limiting the sliding of the rotating seat. A lower pressure block on the upper mold pushes the rotating seat to slide as a whole, and the slidable rotating seat is reset by a nitrogen cylinder. This allows the rotating seat to drive the material sheet to slide along its own length, moving the material sheet closer to the center of the mold width, thus meeting the needs of different scenarios. Because the sliding rotating seat changes the position of the rotating pin, if the rotating seat needs to slide, the rotating pin does not engage with the through hole on the material sheet during placement, but rather engages with the through hole during the preparation of the rotating seat into position.

[0023] In addition, the lower pressure block moves synchronously with the upper mold, and there is no premature or delayed movement, so it does not affect the working speed of the mold.

[0024] Optionally, pressure-bearing parts are provided on both sides of the rotating seat along its length, and pressure strips can be detachably connected to both sides of the base along its length, with the pressure strips pressing against the pressure-bearing parts.

[0025] By adopting the above technical solution, the pressure strip is pressed onto the pressure-bearing part, thereby limiting the pressure-bearing part and making the rotating seat slide only along the length of the slide groove, making it difficult to detach from the slide groove.

[0026] Optionally, one end of the slide is provided with a guide opening, which gradually increases in size along the direction from near the slide to far away from the slide.

[0027] By adopting the above technical solution, a guide port is set to facilitate the insertion of the rotating seat into the slide groove, thereby guiding and limiting the rotating seat.

[0028] Optionally, the rotating seat has a receiving groove, and the rotating pin includes a pin body disposed inside the receiving groove and a limiting ring disposed near the bottom of the receiving groove. A pressure block is detachably connected inside the receiving groove, and the pin body passes through the pressure block.

[0029] By adopting the above technical solution, the limiting ring is pressed down by the pressure block to limit the rotation pin. The rotation pin can be removed and replaced with a rotation pin of different diameter according to the size of the through hole.

[0030] Optionally, the top of the pin is tapered.

[0031] By adopting the above technical solution, the top of the pin is set in a conical shape, which facilitates the insertion and engagement of the rotating pin with the through hole on the material sheet.

[0032] Optionally, the rotating seat is provided with a placement groove, and the limiting hook includes a rod and a protrusion located at the end of the rod away from the rotating seat. The end of the rod near the rotating seat is located inside the placement groove, and the rod is not higher than the surface of the rotating seat.

[0033] By adopting the above technical solution, the rod is placed inside the placement groove, so that the rod is not higher than the surface of the rotating seat, making the surface of the rotating seat flatter and reducing the possibility of the material getting stuck.

[0034] Optionally, a positioning head is provided at one end of the rotating seat away from the limiting hook, and a limiting space for the material sheet is formed between the limiting hook and the positioning head.

[0035] By adopting the above technical solution, the material sheet is restricted between the limit hook and the positioning head after it is rotated, thereby making the position of the material sheet after rotation more accurate and helping to improve working accuracy.

[0036] In summary, this application includes at least one of the following beneficial technical effects:

[0037] 1. When the mold opens, the robotic arm places the cut sheet material onto the rotating base. The rotating pin engages with the through-hole on the sheet material to achieve positioning. Because the drive assembly and upper mold are linked, when the mold closes, the drive assembly moves the sliding block to the pre-positioned position. Then, as the mold reopens, the stop on the sliding block pushes the sheet material around the rotating pin, thus achieving rotation. This eliminates the need for a cylinder linkage mechanism, resulting in a simpler, more reliable, and more stable structure. Simultaneously, the drive assembly works synchronously with the mold, ensuring the sheet material rotation mechanism operates in sync with the mold, eliminating the need for matching time, resulting in faster working speeds and improved efficiency for stamping dies.

[0038] 2. Utilizing a drive block connected to the upper mold as the driving source, the sliding block is directly pushed by the inclined push surface during the downward movement of the drive block, bringing the sliding block to the ready position. No additional power source is required, resulting in a simpler structure. When the mold opens, the drive block moves upward to release the obstruction of the sliding block, allowing the reset nitrogen cylinder to directly drive the sliding block to slide and reset. During the reset process, the sliding block drives the stop block to push the material sheet to rotate around the rotating pin.

[0039] 3. The rotating seat is slidably positioned inside the groove, and the rotating seat is pushed to slide as a whole by the pressure block on the upper mold. After sliding, the rotating seat is reset by a nitrogen cylinder. This allows the rotating seat to drive the material sheet to slide along its own length, realizing the movement of the material sheet and bringing it closer to the center of the mold width direction, thus meeting the needs of different scenarios. In addition, the pressure block moves synchronously with the upper mold without any premature or delayed movement, and does not affect the working speed of the mold. Attached Figure Description

[0040] Figure 1 This is a flowchart illustrating the sheet forming process in the background art of this application.

[0041] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application.

[0042] Figure 3 This is a schematic diagram illustrating the unrotated state of the sheet in the embodiments of this application.

[0043] Figure 4 This is a schematic diagram illustrating the state of the sheet after rotation in an embodiment of this application.

[0044] Figure 5 This is a schematic diagram illustrating the structure of the driving component in the embodiments of this application.

[0045] Figure 6 This is an exploded view illustrating the rotating pin structure in the embodiments of this application.

[0046] Explanation of reference numerals in the attached figures:

[0047] 01. Material sheet; 02. Through hole; 1. Base; 11. Slide groove; 111. Guide opening; 12. Support column; 13. Pressure strip; 14. Mounting groove; 15. Nitrogen cylinder; 2. Rotary seat; 21. Rotary pin; 211. Pin body; 212. Limiting ring; 213. Pressure block; 22. Sliding groove; 221. Reset groove; 23. Pressure bearing part; 24. Placement groove; 25. Receiving groove; 26. Positioning head; 3. Sliding block; 31. Stop block; 4. Limiting hook; 41. Rod part; 42. Protrusion part; 5. Drive assembly; 51. Driven block; 52. Drive block; 521. Inclined push surface; 53. Reset nitrogen cylinder; 6. Limiting block; 61. Limiting part; 7. Lower pressure block; 71. Guide inclined surface. Detailed Implementation

[0048] The following is in conjunction with the appendix Figure 2-6 This application will be described in further detail.

[0049] This application discloses a sheet rotation mechanism for a stamping die.

[0050] Reference Figure 2 and Figure 3 A sheet metal rotation mechanism for a stamping die includes a base 1, a rotating seat 2, a sliding block 3, a limiting hook 4, and a driving assembly 5. The base 1 is fixedly mounted on the lower die. The rotating seat 2 is slidably mounted on the base 1 and slides along the length of the base 1. The sliding block 3 is slidably mounted on the rotating seat 2. The driving assembly 5 drives the sliding block 3 to slide along the width of the base 1. A rotating pin 21 is vertically positioned at the middle of the rotating seat 2 along its length. A stop block 31 is positioned on the sliding block 3 at the end away from the material feeding direction of the sheet metal 01. The limiting hook 4 is positioned on the side of the rotating seat 2 closest to the material feeding direction of the sheet metal 01. The sliding block 3 is located between the limiting hook 4 and the rotating pin 21. The stop block 31 is located on the side of the rotating pin 21 away from the material feeding direction of the sheet metal 01.

[0051] Reference Figure 3 and Figure 4 When the mold opens, the robotic arm places the cut sheet 01 onto the rotating base 2. When the mold closes, the rotating base 2 slides to the ready position, and at the same time, the drive assembly 5 drives the sliding block 3 to slide to the ready position. During this process, the rotating pin 21 engages with the through hole 02 on the sheet 01 to position the sheet 01. Then, when the mold reopens, the rotating base 2 slides back to its original position, and at the same time, the stop block 31 on the sliding block 3 pushes the sheet 01 to rotate around the rotating pin 21, causing the side of the sheet 01 closest to its feeding direction to abut against the limit hook 4, thereby realizing the rotation of the sheet 01.

[0052] Reference Figure 2A groove 11 is formed along the length of the base 1, and a guide opening 111 is provided at one end of the groove 11. The guide opening 111 gradually increases in size from the direction close to the groove 11 to the direction away from the groove 11. The bottom of the rotating seat 2 is slidably disposed inside the groove 11. A pressure bearing part 23 is integrally formed on both sides of the rotating seat 2 along its length. A pressure strip 13 is detachably connected to both sides of the base 1 along its length by bolts. The pressure strip 13 partially presses against the pressure bearing part 23. This achieves the limitation of the rotating seat 2, making it difficult for the rotating seat 2 to detach from the groove 11.

[0053] Reference Figure 5 A lower pressure block 7 is provided at one end of the rotating seat 2 near the limiting hook 4 along its length. The lower pressure block 7 is fixedly connected to the upper mold. A guide slope 71 is provided on the bottom side of the lower pressure block 7 near the rotating seat 2. The rotating seat 2 also has a plane parallel to the guide slope 71. A mounting groove 14 is provided at the bottom of the slide groove 11. A nitrogen cylinder 15 is fixedly installed inside the mounting groove 14. The piston rod of the nitrogen cylinder 15 is fixedly connected to the rotating seat 2. When the mold is closed, the guide slope 71 on the lower pressure block 7 pushes the rotating seat 2 to slide. When the mold is opened, the nitrogen cylinder 15 drives the rotating seat 2 to reset.

[0054] Reference Figure 5 and Figure 6 A receiving groove 25 is provided on the rotating base 2. The rotating pin 21 includes a pin body 211 and a limiting ring 212. The pin body 211 is disposed inside the receiving groove 25 and is vertically arranged. The limiting ring 212 is integrally formed at the bottom end of the pin body 211. The top end of the pin body 211 extends out of the receiving groove 25 and is tapered. A pressure block 212 is detachably connected to the receiving groove 25 by bolts. The pin body 211 moves through the pressure block 212, and the pressure block 212 limits the positioning of the limiting ring 212.

[0055] Reference Figure 4 and Figure 5 A sliding groove 22 is formed on the rotating base 2 between the limiting hook 4 and the rotating pin 21. The sliding groove 22 extends through the width of the rotating base 2. The sliding block 3 is slidably disposed inside the sliding groove 22. The end of the sliding block 3 away from the material sheet 01 extends out of the rotating base 2. A support column 12 is fixedly installed on the side of the base 1 away from the material sheet 01. The support column 12 is used to support the part of the sliding block 3 located outside the sliding groove 22. The sliding block 3 is a T-shaped block. Limiting blocks 6 are integrally formed on both sides of the sliding block 3 along its length. The limiting blocks 6 are detachably connected to the inside of the sliding groove 22 by bolts. A limiting part 61 is integrally formed on the side of each limiting block 6 near the sliding block 3. The limiting part 61 is located on the sliding block 3. The sliding block 3 is limited by pressing it with the limiting part 61.

[0056] Reference Figure 2The rotating seat 2 has a placement groove 24. The limiting hook 4 includes a rod 41 and a protrusion 42. The length direction of the rod 41 is perpendicular to the length direction of the rotating seat 2. One end of the rod 41 is located inside the placement groove 24 and is fixed by bolts. The rod 41 is lower than the surface of the rotating seat 2. The protrusion 42 is integrally formed on the other end of the rod 41.

[0057] Reference Figure 2 and Figure 4 A positioning head 26 is detachably connected to the rotating seat 2 by bolts. The positioning head 26 is located at the end of the rotating seat 2 away from the limiting hook 4. When the material piece 01 is rotated, the limiting hook 4 and the positioning head 26 work together to limit the material piece 01, making the positioning of the material piece 01 more accurate.

[0058] Reference Figure 4 and Figure 5 A reset groove 221 is provided at the bottom of the sliding groove 22. The drive assembly 5 includes a driven block 51, a drive block 52, and a reset nitrogen cylinder 53. The driven block 51 is fixedly connected to the end of the sliding block 3 away from the material sheet 01 in the feeding direction. The drive block 52 is fixedly connected to the upper mold and is located between the rotating seat 2 and the driven block 51. An inclined push surface 521 is provided on the bottom of the drive block 52 near the driven block 51. The reset nitrogen cylinder 53 is fixedly installed inside the reset groove 221, and the piston rod of the reset nitrogen cylinder 53 is fixedly connected to the sliding block 3.

[0059] Reference Figure 4 and Figure 5 When the mold closes, the upper mold drives the lower pressure block 7 and the driving block 52 to move downwards. The guide slope 71 on the lower pressure block 7 pushes the rotating seat 2 to slide, and the inclined push surface 521 pushes the driven block 51 to slide away from the rotating seat 2, thereby bringing the rotating seat 2 and the driven block 51 to the ready position. When the mold opens, the reset nitrogen cylinder 53 drives the sliding block 3 to slide and reset, and the nitrogen cylinder 15 drives the rotating seat 2 to reset. When the sliding block 3 slides, the stop block 31 pushes the material piece 01 to rotate around the rotating pin 21. When the rotating seat 2 slides, it drives the material piece 01 to move to the center position of the lower mold, thereby realizing the rotation and translation of the material piece 01.

[0060] The implementation principle of the sheet rotation mechanism of a stamping die in this application embodiment is as follows: When the die is opened, the rotated sheet 01 is moved to the next position by the robot arm and the sheet 01 to be rotated is placed on the rotating seat 2. Then, when the die is closed, the upper die drives the lower pressing block 7 and the driving block 52 to move downward. The lower pressing block 7 pushes the rotating seat 2 to slide away from itself, and the driving block 52 pushes the driven block 51 to slide away from the rotating seat 2, so that the rotating seat 2 and the driven block 51 reach the preparatory position. During this process, the rotating pin 21 is engaged with the through hole 02 on the sheet 01 to realize the positioning of the sheet 01.

[0061] When the mold is opened, the reset nitrogen cylinder 53 drives the sliding block 3 to slide and reset, and the nitrogen cylinder 15 drives the rotating seat 2 to reset. When the sliding block 3 slides, the stop block 31 pushes the material piece 01 to rotate around the rotating pin 21, so that the side of the material piece 01 close to its own material direction abuts against the limit hook 4, and the side away from its own material direction abuts against the positioning head 26, and then waits for the robot to grab it.

[0062] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A blank rotation mechanism of a press die, characterized by comprising: Include: The base (1) is arranged on the lower mold of the mold, and the base (1) is arranged along the width direction of the lower mold; the rotating seat (2) is arranged on the base (1), and the rotating seat (2) is arranged along the length direction of the base (1), and the middle position of the length direction of the rotating seat (2) is vertically provided with a rotating pin (21) used for inserting and matching the through hole (02) on the material sheet (01); the sliding block (3) is slidingly arranged on the rotating seat (2), and the sliding block (3) slides along the width direction of the rotating seat (2), and the sliding block (3) is provided with a stop block (31) away from one end of the material sheet (01) in the feeding direction; the limiting hook (4) is arranged on the side of the rotating seat (2) close to the material sheet (01) in the feeding direction, and the limiting hook (4) is close to the end position of the rotating seat (2), and the limiting hook (4) extends out of the rotating seat (2); the driving assembly (5) is connected with the upper mold, and the driving assembly (5) is used for driving the sliding block (3) to slide, so that the stop block (31) pushes the material sheet (01) to rotate around the rotating pin (21), until the material sheet (01) is in contact with the limiting hook (4); the sliding groove (22) is arranged on the rotating seat (2), the sliding block (3) is slidingly arranged in the sliding groove (22), one end of the sliding block (3) away from the material sheet (01) in the feeding direction extends out of the rotating seat (2), and the side of the base (1) away from the material sheet (01) in the feeding direction is provided with a supporting column (12) supporting the sliding block (3), and the bottom of the sliding groove (22) is provided with a reset groove (221); the driving assembly (5) comprises a driven block (51) connected to the sliding block (3), a driving block (52) connected to the upper mold and a reset nitrogen cylinder (53) arranged in the reset groove (221), one end of the sliding block (3) extending out of the rotating seat (2) is connected with the driven block (51), the driven block (51) is perpendicular to the sliding direction of the sliding block (3), the driving block (52) is located between the rotating seat (2) and the driven block (51), the driving block (52) is provided with an inclined pushing surface (521) on the side close to the driven block (51) at the bottom, and the piston rod of the reset nitrogen cylinder (53) is connected with the sliding block (3); when the mold is closed, the driving block (52) is driven by the upper mold to move towards the lower mold, so that the inclined pushing surface (521) pushes the driven block (51) to slide away from the rotating seat (2), when the mold is opened, the sliding block (3) is reset by the reset nitrogen cylinder (53), and when the sliding block (3) is reset, the stop block (31) pushes the material sheet (01) to rotate around the rotating pin (21).The base (1) is provided with a sliding groove (11) along its length direction, the rotating seat (2) is slidably arranged in the sliding groove (11), one end of the rotating seat (2) in the length direction is provided with a pressing block (7), the pressing block (7) is connected to the upper die, the bottom of the pressing block (7) is provided with a guide inclined surface (71) near one side of the rotating seat (2), when the mold is closed, the guide inclined surface (71) on the pressing block (7) pushes the rotating seat (2) to slide, and the rotating seat (2) is reset by a nitrogen cylinder (15).

2. A blank rotation mechanism for a stamping die according to claim 1, characterized in that: The sliding block (3) is a T-shaped block, both sides of the length direction of the sliding block (3) are provided with a limiting block (6), the limiting block (6) is detachably connected inside the sliding groove (22), and the limiting block (6) is provided with a limiting portion (61) for pressing the sliding block (3) on one side close to the sliding block (3).

3. A blank rotation mechanism for a stamping die as defined in claim 1, wherein: Both sides of the length direction of the rotating seat (2) are provided with a pressure receiving part (23), and both sides of the length direction of the base (1) are detachably connected with a pressing strip (13), and the pressing strip (13) is partially pressed on the pressure receiving part (23).

4. A blank rotation mechanism for a stamping die according to claim 1, wherein: One end of the sliding groove (11) is provided with a guide port (111), and the guide port (111) gradually increases in the direction from close to the sliding groove (11) to far away from the sliding groove (11).

5. A blank rotation mechanism for a stamping die according to claim 1, wherein: The rotating seat (2) is provided with a containing groove (25), the rotating pin (21) includes a pin body (211) arranged inside the containing groove (25) and a limiting ring (212) arranged on the pin body (211) close to the groove bottom of the containing groove (25), and the containing groove (25) is detachably connected with a pressing block (213), and the pin body (211) penetrates the pressing block (213).

6. A blank rotation mechanism for a stamping die according to claim 5, wherein: The top end of the pin body (211) is conical.

7. A blank rotation mechanism for a stamping die as defined in claim 1, wherein: The rotating seat (2) is provided with a placing groove (24), the limiting hook (4) includes a rod portion (41) and a protruding portion (42) arranged on one end of the rod portion (41) away from the rotating seat (2), one end of the rod portion (41) close to the rotating seat (2) is located inside the placing groove (24), and the rod portion (41) is not higher than the surface of the rotating seat (2).

8. A blank rotation mechanism for a stamping die according to claim 1, wherein: One end of the rotating seat (2) away from the limiting hook (4) is provided with a positioning head (26), and the limiting hook (4) and the positioning head (26) form a limiting space for the material sheet (01).

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