A locking and limiting mechanism for parts used in stamping dies

Abstract

This invention provides a locking and limiting mechanism for stamping die parts, relating to the field of stamping die technology. It includes: a base with an upper pressure plate on top; a guide frame on the front top of the base; a driving mechanism at the bottom of the guide frame; and transmission components on the left and right sides of the guide frame. In this invention, the guide rollers correspond to the through slots of the guide frame, enabling continuous feeding. The transmission components, in conjunction with the driving mechanism, release the limiting action and push the metal sheet backward after stamping. Through mechanical transmission, the feeding action and the sheet clamping action are linked sequentially and performed in one continuous motion, effectively improving the stamping efficiency of the equipment. This solves the problem of manually pushing the metal sheet to the stamping part for limiting and clamping, which required separate steps for feeding and clamping, resulting in poor production efficiency and the need for additional drive control components for the unloading part, increasing equipment weight and cost.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, and in particular to a locking and limiting mechanism for parts used in stamping dies. 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). They are called cold stamping dies (commonly known as cold stamping dies). Stamping is a pressure processing method that uses dies mounted on a press to apply pressure to materials at room temperature, causing them to separate or undergo plastic deformation, thereby obtaining the desired parts.

[0003] However, most of the current traditional stamping die parts locking and limiting mechanisms require manual pushing of the metal sheet to the stamping part for limiting and clamping. The continuous stamping process is cumbersome and laborious, and the feeding action and sheet clamping action need to be carried out in steps, resulting in poor production efficiency of the equipment. In addition, the unloading part needs to be equipped with an extra drive control component, which is more troublesome to use and increases the weight and cost of the equipment. Summary of the Invention

[0004] In view of this, the present invention provides a locking and limiting mechanism for parts of stamping dies, wherein the guide roller corresponds to the through groove of the guide frame, enabling continuous feeding action; the transmission component and the drive mechanism work together to release the limit and push the metal sheet backward after stamping, and the feeding action and the sheet clamping action are linked together in sequence through mechanical transmission to be performed at one time, effectively improving the stamping efficiency of the equipment.

[0005] This invention provides a locking and limiting mechanism for stamping dies, specifically comprising: a base, an upper pressure plate on top of the base; a guide frame on the front side of the top of the base; a driving mechanism at the bottom of the guide frame; transmission components on the left and right sides of the guide frame, the two transmission components being symmetrically distributed; a support frame at the rear of the transmission components, and a limiting clamping plate above the support frame; a pushing frame on the left side of the guide frame, and a sliding frame at the rear end of the pushing frame; a lower die and a lower cutter on the top of the base, the lower die being located at the rear end of the guide frame, and the lower cutter being located in front of the sliding frame; and an upper die and an upper cutter at the bottom of the upper pressure plate, the upper die and the upper cutter corresponding to the lower die and the lower cutter.

[0006] Optionally, a material feeding trough is provided on the rear side of the top of the base, and the material feeding trough is located behind the lower cutter. A collection box is provided at the rear end of the base, and the collection box is connected to the material feeding trough.

[0007] Optionally, a through groove is provided in the middle of the bottom plate of the guide frame, and limiting grooves are provided on the left and right sides of the guide frame. The limiting grooves correspond to the lower mold, and the limiting clamps correspond to the limiting grooves.

[0008] Optionally, the drive mechanism includes a servo motor, a rotating shaft, a missing gear, a guide roller, a rotating disk, and a cam shaft. The servo motor is fixedly installed on the top of the base and is located on the right side of the guide frame. The rotating shaft of the servo motor is provided with a rotating shaft, which is located below the guide frame and is rotatably connected to the guide frame through bearings. The rotating shaft has two missing gears, which correspond to the transmission components. The rotating shaft is provided with a guide roller, which has a three-quarter columnar structure and matches the missing teeth of the missing gears. The guide roller also corresponds to the through slot of the guide frame. The left end of the rotating shaft is provided with a rotating disk, and the left side of the rotating disk is provided with a cam shaft, which corresponds to the push frame.

[0009] Optionally, the transmission assembly includes a mounting base and a rack. The mounting base is fixedly mounted on the top of the base, and the support frame is fitted onto the mounting base. The top of the mounting base is provided with a rack, which is distributed in parallel with the mounting base, and the rack meshes with a gear.

[0010] The mounting base has an insertion hole at the middle of its front end and a sliding groove at the top.

[0011] The rack has a slide bar at the bottom, a pad at the rear end of the rack, and a chamfer at the rear end of the pad. The rack has a connecting rod at the front end, and an insert rod on the connecting rod. The insert rod is distributed in parallel with the rack, and a first tension spring is fitted on the insert rod.

[0012] Optionally, the rack is slidably connected to the slide groove of the mounting base via a slide bar, and the insertion rod is slidably inserted into the insertion hole, and the two ends of the first tension spring are respectively connected to the connecting rod and the mounting base.

[0013] Optionally, the support frame is a U-shaped frame structure, and a through hole is provided in the middle of the top plate of the support frame. Two limiting round rods are provided on the top of the support frame, and a second tension spring is fitted on the limiting round rod. The limiting round rod slides through the limiting clamping plate, and the two ends of the second tension spring are respectively connected to the limiting clamping plate and the support frame.

[0014] Optionally, a pressure block is provided on one side of the bottom end of the limiting clamping plate, and the pressure block is in contact with the metal plate at the top of the lower mold. A sliding rod is provided at the bottom of the limiting clamping plate, and a connecting block is provided at the bottom end of the sliding rod. A chamfer is provided on the front side of the bottom end of the connecting block. The sliding rod slides through the through hole of the support frame, and the connecting block is suspended in the frame of the support frame. The connecting block is located above the mounting base, and the connecting block corresponds to the pad block.

[0015] Optionally, the front end of the push frame is provided with a track bar, and the track bar is slidably fitted with the convex shaft of the rotating disk. Two guide sleeves are slidably fitted on the push frame, and the guide sleeves are fixedly installed on the top of the base.

[0016] Optionally, the sliding frame is provided with two mounting blocks, and the two mounting blocks are provided with clamping plates on their opposite inner sides. A compression spring is provided between the clamping plates and the mounting blocks, and the clamping plates are in contact with the parts at the lower cutter.

[0017] Beneficial effects

[0018] According to various embodiments of the present invention, the locking and limiting mechanism for stamping dies, compared with the traditional locking and limiting mechanism, has the following advantages: the guide roller has a three-quarter columnar structure, the guide roller matches the missing tooth of the gear, the guide roller corresponds to the through groove of the guide frame, and the guide roller contacts the metal sheet on the guide frame, thus enabling continuous feeding action. This eliminates the trouble of manually pushing the material forward during the stamping process, simplifies the operation steps of the equipment, and makes it quick, convenient, and labor-saving to use.

[0019] In addition, a pressure block is provided on one side of the bottom end of the limiting clamping plate, and the pressure block is in contact with the metal sheet on the top of the lower mold. Since the limiting clamping plate and the limiting groove are in the same position, interference with the stamping mold is avoided during the stamping process, and the metal sheet can be effectively limited and clamped.

[0020] In addition, when the pad is slid into the bottom of the connecting block, the limiting clamp can be lifted upward, thereby releasing the clamp on the metal sheet. The transmission component and the drive mechanism work together to release the limit and push the metal sheet backward after stamping. The feeding action and the sheet clamping action are linked together in sequence through mechanical transmission, which saves the trouble of step-by-step operation and effectively improves the stamping efficiency of the equipment.

[0021] Furthermore, since the track bar corresponds to the convex shaft of the rotating disk and slides in a sliding fit, the push frame can drive the sliding frame to slide backward. Through the reciprocating cooperation of the track bar and the rotating disk, the clamps on the sliding frame can loosen the finished parts at the lower cutter, so that they can smoothly reach the collection box through the feeding chute. The feeding action and the unloading action can share a single motor drive, eliminating the need for complex control and drive components, which helps to reduce the weight of the equipment and lower costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0023] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0024] In the attached diagram:

[0025] Figure 1 A schematic diagram of the overall structure of the locking and limiting mechanism for stamping dies according to an embodiment of the present invention is shown;

[0026] Figure 2 This illustrates a locking and limiting mechanism for a stamping die part according to an embodiment of the present invention. Figure 1 A schematic diagram illustrating the resulting rotational perspective;

[0027] Figure 3 This illustrates a locking and limiting mechanism for a stamping die part according to an embodiment of the present invention. Figure 1 A schematic diagram showing the result after removing the upper pressure plate;

[0028] Figure 4 This illustrates a locking and limiting mechanism for a stamping die part according to an embodiment of the present invention. Figure 3 A schematic diagram showing the result after the base has been removed;

[0029] Figure 5 A schematic diagram of a guide frame and a lower die for a part locking and limiting mechanism for a stamping die according to an embodiment of the present invention is shown;

[0030] Figure 6 A schematic diagram of the drive mechanism of the locking and limiting mechanism for parts of a stamping die according to an embodiment of the present invention is shown;

[0031] Figure 7 A schematic diagram of the transmission assembly of a part locking and limiting mechanism for stamping dies according to an embodiment of the present invention is shown in an exploded state.

[0032] Figure 8 A schematic diagram of the support frame and limiting plate of the part locking and limiting mechanism for stamping dies according to an embodiment of the present invention is shown in an exploded state;

[0033] Figure 9 A schematic diagram of the push frame and sliding frame of the part locking and limiting mechanism for stamping dies according to an embodiment of the present invention is shown.

[0034] List of reference numerals

[0035] 1. Base; 101. Feed chute; 102. Collection box; 2. Upper pressure plate; 3. Guide frame; 301. Through groove; 302. Limiting groove; 4. Drive mechanism; 401. Servo motor; 402. Rotating shaft; 403. Gear; 404. Guide roller; 405. Rotating disk; 406. Protruding shaft; 5. Transmission assembly; 501. Mounting base; 5011. Insertion hole; 5012. Slide groove; 502. Rack; 5021. Slide bar; 50 22. Pad block; 5023. Insert rod; 5024. First tension spring; 6. Support frame; 601. Through hole; 602. Limiting round rod; 603. Second tension spring; 7. Limiting clamping plate; 701. Pressure block; 702. Slide rod; 703. Connecting block; 8. Push frame; 801. Track bar; 802. Guide sleeve; 9. Sliding frame; 901. Mounting block; 902. Clamping piece; 903. Compression spring; 10. Lower mold; 11. Lower cutter. Detailed Implementation

[0036] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0037] Example: Please refer to Figures 1 to 9 :

[0038] This invention proposes a locking and limiting mechanism for stamping dies, comprising: a base 1, an upper pressure plate 2 above the base 1; a guide frame 3 on the front side of the top of the base 1; a driving mechanism 4 at the bottom of the guide frame 3; transmission components 5 on the left and right sides of the guide frame 3, and the two transmission components 5 are symmetrically distributed; a support frame 6 at the rear of the transmission components 5, and a limiting clamping plate 7 above the support frame 6; a push frame 8 on the left side of the guide frame 3, and a sliding frame 9 at the rear end of the push frame 8; a lower die 10 and a lower cutter 11 on the top of the base 1, with the lower die 10 located at the rear end of the guide frame 3 and the lower cutter 11 located in front of the sliding frame 9; and an upper die and an upper cutter at the bottom of the upper pressure plate 2, with the upper die and upper cutter corresponding to the lower die 10 and lower cutter 11.

[0039] Furthermore, according to embodiments of the present invention, such as Figures 4 to 6 As shown, a through groove 301 is provided in the middle of the bottom plate of the guide frame 3, and limiting grooves 302 are provided on the left and right sides of the guide frame 3, and the limiting grooves 302 correspond to the lower mold 10.

[0040] The drive mechanism 4 includes a servo motor 401, a rotating shaft 402, a missing gear 403, a guide roller 404, a rotating disk 405, and a cam 406. The servo motor 401 is fixedly mounted on the top of the base 1 and is located on the right side of the guide frame 3. The rotating shaft 402 is provided on the rotating shaft of the servo motor 401 and is located below the guide frame 3. The rotating shaft 402 is rotatably connected to the guide frame 3 through bearings. The rotating shaft 402 is provided with two missing gears 403, and the missing gears 403 are connected to the transmission assembly. Corresponding to part 5, a guide roller 404 is provided on the rotating shaft 402. This device is powered by a servo motor 401, which drives the guide roller 404 to rotate using the rotating shaft 402. Since the guide roller 404 has a three-quarter columnar structure and matches the missing tooth of the missing gear 403, the guide roller 404 corresponds to the through groove 301 of the guide frame 3, and the guide roller 404 contacts the metal sheet on the guide frame 3, which can realize continuous feeding action, thus eliminating the trouble of manually pushing the material forward during the stamping process.

[0041] Furthermore, according to embodiments of the present invention, such as Figure 4 and Figure 8 As shown, the support frame 6 is a U-shaped frame structure, and a through hole 601 is opened in the middle of the top plate of the support frame 6. Two limiting round rods 602 are provided on the top of the support frame 6, and a second tension spring 603 is fitted on the limiting round rod 602. The limiting round rod 602 slides through the limiting clamp 7, and the two ends of the second tension spring 603 are respectively connected to the limiting clamp 7 and the support frame 6.

[0042] A pressure block 701 is provided on one side of the bottom end of the limiting clamping plate 7, and the pressure block 701 is in contact with the metal sheet on the top of the lower mold 10. Since the limiting clamping plate 7 and the limiting groove 302 are in corresponding positions, interference with the stamping mold is avoided during the stamping process, and the metal sheet can be effectively limited and clamped.

[0043] Furthermore, according to embodiments of the present invention, such as Figures 6 to 8 As shown, the transmission assembly 5 includes a mounting base 501 and a rack 502. The mounting base 501 is fixedly mounted on the top of the base 1, and the support frame 6 is fitted onto the mounting base 501. The top of the mounting base 501 is provided with a rack 502, and the rack 502 is distributed in parallel with the mounting base 501. The rack 502 is meshed with the missing gear 403.

[0044] The mounting base 501 has an insertion hole 5011 at the middle of the front end and a sliding groove 5012 at the top of the mounting base 501.

[0045] The rack 502 has a slide bar 5021 at the bottom, a pad block 5022 at the rear end of the rack 502, and a chamfer at the rear end of the pad block 5022. The rack 502 has a connecting rod at the front end, and an insert rod 5023 on the connecting rod. The insert rod 5023 is distributed in parallel with the rack 502, and a first tension spring 5024 is fitted on the insert rod 5023.

[0046] The rack 502 is slidably connected to the slide groove 5012 of the mounting base 501 via the slide bar 5021, and the insertion rod 5023 is slidably inserted into the insertion hole 5011, and the two ends of the first tension spring 5024 are respectively connected to the connecting rod and the mounting base 501.

[0047] The bottom of the limiting clamp 7 is provided with a sliding rod 702, and the bottom end of the sliding rod 702 is provided with a connecting block 703. The front side of the bottom end of the connecting block 703 is chamfered. The sliding rod 702 slides through the through hole 601 of the support frame 6, and the connecting block 703 is suspended in the frame of the support frame 6. The connecting block 703 is located above the mounting base 501, and the connecting block 703 corresponds to the pad 5022. During the rotation of the rotating shaft 402 of the present invention, the gear 403 and the rack 502 are used for transmission, so that the rack 502 drives the pad 5022 along the sliding groove of the mounting base 501. When 5012 slides, and the gear 403 and rack 502 are not in a connected state, the elastic action of the first tension spring 5024 drives the rack 502 to slide, so that the pad 5022 returns to its initial position. When the pad 5022 slides into the bottom of the connecting block 703, the limiting clamp 7 can be lifted upward, thereby releasing the clamping of the metal sheet. The transmission component 5 and the drive mechanism 4 work together to release the limit and push the metal sheet backward after stamping. Through mechanical transmission, the feeding action and the sheet clamping action are linked together in sequence and performed at one time.

[0048] Furthermore, according to embodiments of the present invention, such as Figure 3 , Figure 6 and Figure 9 As shown, a material feeding groove 101 is provided on the rear side of the top of the base 1, and the material feeding groove 101 is located behind the lower cutter 11. A collection box 102 is provided at the rear end of the base 1, and the collection box 102 is connected to the material feeding groove 101.

[0049] The left end of the rotating shaft 402 is provided with a rotating disk 405, and the left side of the rotating disk 405 is provided with a convex shaft 406, and the rotating disk 405 corresponds to the push frame 8;

[0050] The front end of the push frame 8 is provided with a track bar 801, and two guide sleeves 802 are slidably mounted on the push frame 8, and the guide sleeves 802 are fixedly installed on the top of the base 1;

[0051] The sliding frame 9 is provided with two mounting blocks 901. The two mounting blocks 901 are provided with clamping pieces 902 on their inner sides. A compression spring 903 is provided between the clamping pieces 902 and the mounting blocks 901. The clamping pieces 902 are in contact with the parts at the lower cutter 11. When the rotating shaft 402 drives the rotating disk 405 to rotate, the push frame 8 can drive the sliding frame 9 to slide backward because the track bar 801 is slidably engaged with the convex shaft 406 of the rotating disk 405. Through the reciprocating engagement of the track bar 801 and the rotating disk 405, the clamping pieces 902 on the sliding frame 9 can loosen the finished parts at the lower cutter 11, so that they can smoothly pass through the feeding chute 101 to the collection box 102. The feeding action and the unloading action can share a single motor drive, which does not require complex control and drive components, and helps to reduce the weight and cost of the equipment.

[0052] The specific usage and function of this embodiment: In this invention, the servo motor 401 provides power, and the rotating shaft 402 drives the guide roller 404 to rotate. Since the guide roller 404 has a three-quarter columnar structure, and the guide roller 404 matches the missing tooth of the missing gear 403, the guide roller 404 corresponds to the through groove 301 of the guide frame 3, and the guide roller 404 contacts the metal sheet on the guide frame 3, it can realize continuous feeding action; a pressure block 701 is provided on one side of the bottom end of the limiting clamping plate 7, and the pressure block 701 contacts the metal sheet on the top of the lower mold 10, which can effectively limit and clamp the metal sheet during the stamping process; during the rotation of the rotating shaft 402 of this invention, the missing gear 403 and the rack 502 are used for transmission, so that the rack 502 drives the pad 5022 to slide along the slide groove 5012 of the mounting base 501, while the missing gear 403 and the rack 502 drive the pad 5022 to slide along the slide groove 5012 of the mounting base 501, and the missing gear 403 and the rack 502 drive the pad 5022 to slide along the slide groove 5012 of the mounting base 501, while the rack 502 and the rack 502 drive the pad 5022 to slide along the slide groove 5012 of the mounting base 501, and the rack 502 ... When the rack 502 is not in the connected state, the elastic action of the first tension spring 5024 drives the rack 502 to slide, so that the pad 5022 returns to its initial position. When the pad 5022 slides into the bottom of the connecting block 703, the limiting clamp 7 can be lifted upward, thereby releasing the clamping of the metal sheet. The transmission component 5 and the drive mechanism 4 work together to release the limiting and push the metal sheet backward after stamping. When the rotating shaft 402 drives the rotating disk 405 to rotate, the push frame 8 can drive the sliding frame 9 to slide backward because the track bar 801 slides into the convex shaft 406 of the rotating disk 405. Through the reciprocating cooperation of the track bar 801 and the rotating disk 405, the clamping piece 902 on the sliding frame 9 can loosen the finished part at the lower cutter 11, so that it can smoothly pass through the feeding groove 101 to the collection box 102, thereby completing the continuous stamping process.

[0053] Finally, it should be noted that when describing the position of each component and the mating relationship between them, the present invention usually uses one or a pair of components as examples. However, those skilled in the art should understand that such positions, mating relationships, etc., are also applicable to other components or other pairs of components.

[0054] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A part locking and positioning mechanism for a press die, characterized by: The utility model provides a part locking and limiting mechanism for stamping die, including: base (1), the upper side of base (1) is equipped with upper pressing plate (2), the top front side of base (1) is equipped with guide frame (3), the bottom of guide frame (3) is equipped with drive mechanism (4), the left and right sides of guide frame (3) are equipped with transmission assembly (5), and two transmission assemblies (5) are symmetrically distributed, the rear of transmission assembly (5) is equipped with support frame (6), and the upper side of support frame (6) is equipped with limiting clamping plate (7), the left side of guide frame (3) is equipped with push frame (8), and the rear end of push frame (8) is equipped with sliding frame (9), the top of base (1) is equipped with lower die (10) and lower cutting tool (11), and lower die (10) is located at the rear end of guide frame (3), and lower cutting tool (11) is located in the front of sliding frame (9), the bottom of upper pressing plate (2) is equipped with upper die and upper cutting tool, and upper die and upper cutting tool correspond to the position of lower die (10) and lower cutting tool (11), The drive mechanism (4) includes a servo motor (401), a rotating shaft (402), a missing gear (403), a guide roller (404), a rotating disc (405) and a convex shaft (406), the servo motor (401) is fixedly installed on the top of the base (1), and the servo motor (401) is located on the right side of the guide frame (3), a rotating shaft (402) is arranged on the rotating shaft of the servo motor (401), and the rotating shaft (402) is located below the guide frame (3) and is rotatably connected to the guide frame (3) through a bearing, two missing gears (403) are arranged on the rotating shaft (402), and the missing gears (403) correspond to the transmission assemblies (5), a guide roller (404) is arranged on the rotating shaft (402), the guide roller (404) has a three-quarter columnar structure, and the guide roller (404) is matched with the missing teeth of the missing gears (403), a rotating disc (405) is arranged on the left end of the rotating shaft (402), and a convex shaft (406) is arranged on the left side of the rotating disc (405), and the rotating disc (405) corresponds to the push frame (8); The transmission assembly (5) includes a mounting base (501) and a rack (502), the mounting base (501) is fixedly installed on the top of the base (1), the support frame (6) is sleeved on the mounting base (501), and the rack (502) is arranged on the top of the mounting base (501) and is parallel to the mounting base (501), and the rack (502) is in meshing connection with the missing gears (403); The mounting base (501) is provided with a bushing (5011) at the middle position of the front end, and the mounting base (501) is provided with a sliding groove (5012) on the top; The rack (502) is provided with a sliding bar (5021) at the bottom, a pad (5022) is arranged at the rear end of the rack (502), a chamfer is formed at the rear end of the pad (5022), a connecting rod is arranged at the front end of the rack (502), and a plug rod (5023) is arranged on the connecting rod, the plug rod (5023) is parallel to the rack (502), and a first tension spring (5024) is sleeved on the plug rod (5023); Two mounting blocks (901) are arranged on the sliding frame (9), clamping pieces (902) are arranged opposite to the inner sides of the mounting blocks (901), compression springs (903) are arranged between the clamping pieces (902) and the mounting blocks (901), and the clamping pieces (902) are in contact with parts at the position of the lower cutter (11).

2. The part locking and positioning mechanism for a stamping die according to claim 1, characterized in that: The bottom base (1) is provided with a discharging groove (101) at the top rear side, and the discharging groove (101) is located behind the lower cutter (11); the bottom base (1) is provided with a collecting box (102) at the rear end, and the collecting box (102) is communicated with the discharging groove (101).

3. The locking mechanism for a press die part according to claim 1, wherein: A through groove (301) is arranged at the middle position of the bottom plate of the material guide frame (3), limit grooves (302) are arranged at the left and right sides of the material guide frame (3), the limit grooves (302) correspond to the lower mold (10), and the position of the limit clamping plate (7) corresponds to the position of the limit grooves (302).

4. The part locking and positioning mechanism for a stamping die according to claim 1, wherein: The rack (502) is slidably connected with the sliding groove (5012) of the mounting base (501) through the sliding bar (5021), the plug rod (5023) is slidably inserted into the plug hole (5011), and the two ends of the first tensile spring (5024) are respectively connected with the connecting rod and the mounting base (501).

5. The part locking mechanism for a stamping die according to claim 4, wherein: The supporting frame (6) is a U-shaped frame structure, a through hole (601) is arranged at the middle position of the top plate of the supporting frame (6), two limit round rods (602) are arranged at the top of the supporting frame (6), the second tensile spring (603) is sleeved on the limit round rod (602), the limit round rod (602) slidably penetrates through the limit clamping plate (7), and the two ends of the second tensile spring (603) are respectively connected with the limit clamping plate (7) and the supporting frame (6).

6. The part locking and positioning mechanism for a stamping die as set forth in claim 5, wherein: The limit clamping plate (7) is provided with a pressing block (701) at one side of the bottom end, the pressing block (701) is in contact with the metal plate at the top of the lower mold (10), the limit clamping plate (7) is provided with a sliding rod (702) at the bottom, the sliding rod (702) is provided with a connecting block (703) at the bottom end, a chamfer is arranged at the front side of the bottom end of the connecting block (703), the sliding rod (702) slidably penetrates through the through hole (601) of the supporting frame (6), the connecting block (703) is suspended in the frame of the supporting frame (6), the connecting block (703) is located above the mounting base (501), and the connecting block (703) corresponds to the pad (5022).

7. The part locking and positioning mechanism for a stamping die as set forth in claim 1, wherein: The pushing frame (8) is provided with a rail strip (801) at the front end, the rail strip (801) is slidably inserted into the convex shaft (406) of the rotating disc (405) in a matched mode, two guide sleeves (802) are slidably sleeved on the pushing frame (8), and the guide sleeves (802) are fixedly installed on the top of the bottom base (1).

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