Multi-punch step-by-step blanking stamping die

Abstract

The utility model discloses a multi-punch step-by-step blanking stamping die, and relates to the technical field of punch dies. The stamping die comprises an upper die and a lower die, corresponding guide holes are formed in the upper die and the lower die, guide columns are installed in the guide holes, the guide columns are matched with the guide holes, the upper die is connected with the lower die through the guide columns, corresponding punch mounting holes are formed in the upper die, and the upper die is connected with the lower die through the punch mounting holes. A blanking punch and a stamping punch which are matched with the punch mounting holes are respectively mounted in the punch mounting holes, the stamping punch is longer than the blanking punch, and the blanking punch and the stamping punch are symmetrically arranged on the upper die. The stamping die has the advantages that blanking and stamping are completed step by step in one die, so that operation is simplified, working efficiency is improved, and use cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of punch dies, and in particular relates to a multi-punch step-by-step punching and stamping die. Background Art

[0002] At present, some mechanical processing will first use a blanking punch die to punch the material, and then use a stamping punch die to punch and form it to obtain the required workpiece. During the production process, the punch die needs to be replaced frequently, which is cumbersome to operate, increases labor intensity, reduces work efficiency, and brings inconvenience to production. In addition, different punch dies need to be made during the production process, which increases the cost of use. Utility Model Content

[0003] In view of the problems in the related art, the utility model proposes a multi-punch step-by-step punching stamping die to overcome the above technical problems existing in the existing related art.

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model discloses a multi-punch step-by-step punching and stamping die, comprising an upper die and a lower die. Corresponding guide holes are provided on the upper die and the lower die, guide pillars are installed in the guide holes, the guide pillars are matched with the guide holes, the upper die is connected to the lower die through the guide pillars, corresponding punch mounting holes are provided in the upper die, punch mounting holes are respectively equipped with punching punches and stamping punches that are matched with the punches, the stamping punches are longer than the punching punches, and the punching punches and the stamping punches are symmetrically arranged on the upper die.

[0006] Furthermore, gaskets are installed in the upper mold and the lower mold. The upper mold includes an upper mold base, a gasket, and an upper mold core. A mold handle is provided on the upper side of the upper mold base, and the mold handle is located in the middle of the upper mold base. A gasket is installed on the lower side of the upper mold base, one side of the gasket is tightly attached to the lower side of the upper mold base, and the other side of the gasket is tightly attached to the upper side of the upper mold core.

[0007] Furthermore, the lower mold includes a lower mold base, a gasket, and a lower mold core. The lower mold base is equipped with a gasket, and the lower mold core is equipped with the gasket. The lower mold core and the upper mold core are provided with corresponding spring grooves. The spring groove is coaxial with the guide hole, and the spring groove is larger than the guide hole. A spring 1 is installed in the spring groove, and the spring is mounted on the guide column. The two ends of the spring 1 are respectively abutted against the upper mold core and the lower mold core.

[0008] Furthermore, a blanking hole is provided on the lower die core, the position of the blanking hole corresponds to the blanking punch, and the blanking hole fits the blanking punch.

[0009] Furthermore, a stamping groove is provided on the lower die core, the position of the stamping groove corresponds to the stamping punch, the stamping groove fits with the stamping punch, the inner diameter of the stamping groove is equal to the blanking hole, a support is provided in the stamping groove, a top block is provided in the stamping groove, the top block is located in the support, the top block is higher than the support, a plurality of limit holes are provided in the support, and the limit holes are evenly arranged in the support.

[0010] Furthermore, a cylinder mounting groove is provided in the lower die core, the cylinder mounting groove is located on one side of the lower die core, the cylinder mounting groove is relatively located below the blanking hole, a push rod groove is provided in the lower die core, one end of the push rod groove is connected to one end of the cylinder mounting groove, the other end of the push rod groove is provided on one side of the stamping groove, a slide groove is provided in the lower die core, the slide groove is located directly above the push rod groove, the width of the slide groove is equal to the inner diameter of the blanking hole, and the slide groove is located below the blanking hole.

[0011] Furthermore, a movable plate is installed in the stamping groove, and a plurality of sliding rods are provided on the movable plate. The sliding rods are installed in the limiting holes. The inner diameter of the movable plate fits with the top block. A second spring is installed between the support and the top block. The second spring is sleeved on the top block. The two ends of the second spring are respectively abutted against the bottom side of the movable plate and the bottom of the stamping groove, and the movable plate is flush with the top block.

[0012] Furthermore, a cylinder is installed in the cylinder installation groove, a push rod is provided in the cylinder, a sliding block is provided on the push rod, the push rod is matched with the push rod groove, the sliding block is installed in the sliding groove, and the sliding block is matched with the sliding groove.

[0013] The utility model has the following beneficial effects: by using a multi-punch step-by-step blanking and stamping die, first the die is placed on the equipment, and after adjusting the position, the upper die handle on the upper die seat of the upper die is fixed to the slider of the upper device, and the lower die seat of the lower die is fixed to the equipment by a clamp, and after the die is fixed, the distance between the upper die and the lower die is adjusted, and after the preparation work is completed, the equipment is started to work, and the prepared plate is placed on the lower die core in the die, and the plate is located below the blanking punch, and after the plate is placed down, the equipment pushes the upper die downward, and the upper die is compressed downward along the guide column, and in this process, the spring between the upper die core and the lower die core is compressed, so that the upper die is stably compressed, and as the upper die is compressed, the blanking punch and the stamping punch on it gradually move downward. When the upper die core approaches, its blanking punch starts working first, and the blanking punch blanks the sheet, and the blanked sheet falls into the chute below it through the blanking hole. When the blanking punch has blanked the sheet, the equipment starts to lift the upper die, and the blanking punch and stamping punch on the upper die rise from the blanking hole and stamping groove on the lower die core. During this process, the cylinder in the cylinder mounting groove on the lower die core starts to work, and the push rod in the cylinder extends in the push rod groove, and the slider on the push rod pushes the sheet in the chute to move toward the stamping groove. When the slider on the push rod moves to the side of the stamping groove, the sheet has fallen onto the movable plate and the top block in the stamping groove. At the same time, the sheet on the lower die core adjusts its position to align the part to be blanked with the blanking hole. When the blanked sheet falls into the stamping groove and the sheet on the lower die core is adjusted After the upper die is in the correct position, the equipment starts to compress the upper die downward again, and its blanking punch blanks the sheet again, so that the blanked sheet falls into the slide groove under the blanking hole, and the stamping punch also stamps the previous blanked sheet in the stamping groove. In this process, the movable plate starts to move downward under the pressure of the stamping punch, and the spring 2 under the movable plate starts to compress. At the same time, the slide bar under the movable plate moves downward in the limiting hole of the support platform. When the movable plate is compressed by the stamping punch so that the bottom contacts the upper side of the support platform, the blanked sheet is also stamped and formed into a processed workpiece. The blanking of the sheet and the stamping of the blanked sheet are completed at the same time. When these two processes are completed, the equipment raises the upper die again, and the blanking punch and stamping punch on it leave the blanking hole again. and the stamping groove. At the same time, the compressed spring 2 under the movable plate begins to rebound, and the rebounding spring 2 pushes the movable plate up, and the slide bar on the movable plate also moves together in the limiting hole. The rising movable plate drives the workpiece on it. When the movable plate rises to be flush with the top block, the slide bar under the movable plate is restricted by the limiting hole, so that the movable plate stops rising, and the spring 2 returns to the state that it has not been compressed by the stamping punch. The workpiece on the movable plate continues to rise under the action of inertia and is ejected out of the stamping groove. When the workpiece is ejected out of the stamping groove, the upper die also returns to the height before compression, and the slider in the slide groove pushes the punched sheet in the slide groove into the stamping groove again. At this time, the ejected workpiece is put away and the position of the sheet on the lower die core is adjusted again to wait for the next punching and stamping.By combining the blanking punch and the stamping punch in one die, blanking and stamping are completed in steps in one die, thereby simplifying the operation, improving the work efficiency, and reducing the cost of use. The punched workpiece is ejected from the punching groove through the cooperation of the movable plate and the spring, so that the operator does not need to take the workpiece out of the punching groove, thereby reducing the labor intensity and ensuring the personal safety of the operator.

[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the utility model embodiments, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic diagram of the exploded cross-sectional structure of the utility model;

[0017] Figure 2 It is a left side cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3 It is a schematic diagram of the right side structure of the utility model;

[0019] Figure 4 It is a front structural schematic diagram of the utility model;

[0020] Figure 5 For this utility model Figure 1 A local enlarged structural schematic diagram;

[0021] Figure 6 For this utility model Figure 1 Schematic diagram of the local enlarged structure at point B.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Upper die; 2. Upper die base; 201. Die handle; 3. Gasket; 4. Upper die core; 5. Guide hole; 6. Guide column; 7. Punch mounting hole; 8. Blanking punch; 9. Stamping punch; 10. Lower die; 11. Lower die core; 1101. Blanking hole; 1102. Stamping groove; 1103. Support platform; 1104. Ejector block; 1105. Limiting hole; 1106. Cylinder mounting groove; 1107. Push rod groove; 1108. Slide groove; 12. Spring groove; 13. Spring 1; 14. Movable plate; 1401. Slide rod; 15. Spring 2; 16. Cylinder; 1601. Push rod; 1602. Slide block; 17. Lower die base. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] See also Figure 1-6 As shown, the utility model is a multi-punch step-by-step blanking and stamping die, comprising an upper die 1 and a lower die 10, wherein corresponding guide holes 5 are provided on the upper die 1 and the lower die 10, wherein guide posts 6 are installed in the guide holes 5, wherein the guide posts 6 match the guide holes 5, wherein the upper die 1 is connected to the lower die 10 via the guide posts 6, wherein corresponding punch mounting holes 7 are provided in the upper die 1, wherein blanking punches 8 and stamping punches 9 matching therewith are respectively installed in the punch mounting holes 7, wherein the stamping punches 9 are longer than the blanking punches 8, wherein the blanking punches 8 and the stamping punches 9 are symmetrically arranged on the upper die 1; in the process of using the die, the die is first placed on the equipment, and after adjusting the position, the upper die handle 201 on the upper die seat 2 of the upper die 1 is fixed to the slider of the equipment above it, and the lower die seat 17 of the lower die 10 is fixed on the upper die seat 2 of the upper die 1 by a clamp. On the equipment, after fixing the mold, adjust the distance between the upper mold 1 and the lower mold 10. After the preparation work is completed, start the equipment to work, put the prepared plate on the lower mold core 11 in the mold, and the plate is located below the punching punch 8. After putting down the plate, the equipment pushes the upper mold 1 downward, and the upper mold 1 is compressed downward along the guide column 6. Its punching punch 8 punches the plate, and at the same time, the stamping punch 9 also punches the last punched plate in the stamping groove 1102. When these two processes are completed, the equipment raises the upper mold 1 again, and the punching punch 8 and the stamping punch 9 thereon leave the blanking hole 1101 and the stamping groove 1102 again. By combining the punching punch and the stamping punch in one mold, the punching and stamping are completed step by step in one mold, thereby simplifying the operation, improving the work efficiency, and reducing the use cost.

[0027] In one embodiment, for the above-mentioned multi-punch step-by-step blanking stamping die, a gasket 3 is installed in both the upper die 1 and the lower die 10, and the upper die 1 includes an upper die base 2, a gasket 3, and an upper die core 4. A die handle 201 is provided on the upper side of the upper die base 2, and the die handle 201 is located in the middle of the upper die base 2. A gasket 3 is installed on the lower side of the upper die base 2, and one side of the gasket 3 is tightly attached to the lower side of the upper die base 2, and the other side of the gasket 3 is tightly attached to the upper side of the upper die core 4.

[0028] In one embodiment, for the above-mentioned multi-punch step-by-step blanking and stamping die, the lower die 10 includes a lower die base 17, a gasket 3, and a lower die core 11. The lower die base 17 is installed with a gasket 3, and the lower die core 11 is installed on the gasket 3. The lower die core 11 and the upper die core 4 are provided with corresponding spring grooves 12. The spring groove 12 is coaxial with the guide hole 5, and the spring groove 12 is larger than the guide hole 5. A spring 13 is installed in the spring groove 12, and the spring 13 is sleeved on the guide column 6. The two ends of the spring 13 are respectively abutted against the upper die core 4 and the lower die core 11; the lower die base 17 is fixed to the equipment by a clamp, and its gasket 3 plays a role in buffering and protecting the mold during the blanking and stamping process, and the spring 13 can improve the stability of the mold.

[0029] In one embodiment, for the above-mentioned multi-punch step-by-step punching and stamping die, a blanking hole 1101 is opened on the lower die core 11 , and the position of the blanking hole 1101 corresponds to the punching punch 8 , and the blanking hole 1101 fits with the punching punch 8 .

[0030] In one embodiment, for the above-mentioned multi-punch step-by-step punching stamping die, a stamping groove 1102 is opened on the lower die core 11, and the position of the stamping groove 1102 corresponds to the stamping punch 9, the stamping groove 1102 fits with the stamping punch 9, the inner diameter of the stamping groove 1102 is equal to the blanking hole 1101, a support 1103 is provided in the stamping groove 1102, and a top block 1104 is provided in the stamping groove 1102, the top block 1104 is located in the support 1103, the top block 1104 is higher than the support 1103, and a plurality of limit holes 1105 are opened in the support 1103, and the limit holes 1105 are evenly arranged in the support 1103.

[0031] In one embodiment, for the above-mentioned multi-punch step-by-step punching stamping die, a cylinder mounting groove 1106 is provided in the lower die core 11, and the cylinder mounting groove 1106 is located on one side of the lower die core 11, and the cylinder mounting groove 1106 is relatively located below the blanking hole 1101, and a push rod groove 1107 is provided in the lower die core 11, and one end of the push rod groove 1107 is connected to one end of the cylinder mounting groove 1106, and the other end of the push rod groove 1107 is connected to the other end of the push rod groove 1107. One end is opened on one side of the stamping groove 1102, and a slide groove 1108 is opened in the lower die core 11. The slide groove 1108 is located directly above the push rod groove 1107, and the width of the slide groove 1108 is equal to the inner diameter of the blanking hole 1101. The slide groove 1108 is equal to the inner diameter of the blanking hole 1101, so that the punched sheet can be accurately pushed into the stamping groove 1102 by the slider 1602.

[0032] In one embodiment, for the above-mentioned multi-punch step-by-step punching stamping die, a movable plate 14 is installed in the stamping groove 1102, and a plurality of slide bars 1401 are provided on the movable plate 14, and the slide bars 1401 are installed in the limiting holes 1105. The inner diameter of the movable plate 14 matches the top block 1104, and a spring 15 is installed between the support 1103 and the top block 1104. The spring 15 is sleeved on the top block 1104, and the spring 15 is installed between the support 1103 and the top block 1104. The two ends of 5 are respectively against the bottom side of the movable plate 14 and the bottom of the stamping groove 1102, and the movable plate 14 is flush with the top block 1104; during the stamping process, the movable plate 14 starts to move downward under the pressure of the stamping punch 9, and the spring 15 under the movable plate 14 starts to compress, and at the same time, the slide bar 1401 under the movable plate 14 moves downward in the limiting hole 1105 of the support platform 1103. When the movable plate 14 is compressed by the stamping punch 9 so that the bottom is aligned with the support platform 1103, the movable plate 14 is pressed by the stamping punch 9. When the upper side of the movable plate 14 contacts the upper side of the movable plate 14, the stamping is completed. When the stamping punch 9 begins to leave the stamping groove 1102, the compressed spring 2 15 under the movable plate 14 begins to rebound. The rebounding spring 2 15 pushes the movable plate 14 to rise, and the slide bar 1401 on the movable plate 14 also moves together in the limiting hole 1105. The rising movable plate 14 drives the workpiece thereon. When the movable plate 14 rises to be flush with the top block 1104, the slide bar 1401 under the movable plate 14 is restricted by the limiting hole 1105, so that the movable plate 14 stops rising, and the spring 2 15 returns to the state that it has not been compressed by the stamping punch 9 before. The workpiece on the movable plate 14 continues to rise under the action of inertia and is ejected from the stamping groove 1102. When the workpiece is ejected from the stamping groove 1102, the upper mold 1 brings the stamping punch 9 back to the height before compression, so that the operator does not need to take the workpiece out of the stamping groove 1102, thereby reducing the labor intensity and ensuring the personal safety of the operator.

[0033] In one embodiment, for the above-mentioned multi-punch step-by-step punching stamping die, a cylinder 16 is installed in the cylinder mounting groove 1106, a push rod 1601 is provided in the cylinder 16, a slider 1602 is provided on the push rod 1601, the push rod 1601 is matched with the push rod groove 1107, the slider 1602 is installed in the slide groove 1108, and the slider 1602 is matched with the slide groove 1108; the push rod 1601 in the cylinder 16 extends in the push rod groove 1107, and the slider 1602 on the push rod 1601 pushes the plate in the slide groove 1108 to move toward the stamping groove 1102, and finally the plate is pushed into the stamping groove 1102.

[0034] In summary, with the aid of the above technical solution of the utility model, by using a multi-punch step-by-step blanking stamping die, first the die is placed on the equipment, and after adjusting the position, the upper die handle 201 on the upper die seat 2 of the upper die 1 is fixed to the slider of the upper device, and the lower die seat 17 of the lower die 10 is fixed to the equipment through a clamp. After the die is fixed, the distance between the upper die 1 and the lower die 10 is adjusted. After the preparation work is completed, the equipment is started to work, and the prepared sheet is placed on the lower die core 11 in the die. The sheet is located below the blanking punch 8. After the sheet is placed down, the equipment pushes the upper die 1 downward, and the upper die 1 is compressed downward along the guide column 6. In this process, the spring 13 between the upper die core 4 and the lower die core 11 is compressed, so that The upper die 1 is compressed stably. As the upper die 1 is compressed, the shearing punch 8 and the stamping punch 9 on it gradually approach the lower die core 11. The shearing punch 8 starts working first. The shearing punch 8 punches the sheet. The punched sheet falls into the chute 1108 below it through the blanking hole 1101. When the shearing punch 8 has punched the sheet, the equipment starts to lift the upper die 1. The shearing punch 8 and the stamping punch 9 on the upper die 1 are lifted from the blanking hole 1101 and the stamping groove 1102 on the lower die core 11. During this process, the cylinder 16 in the cylinder mounting groove 1106 on the lower die core 11 starts working, and the push rod 1601 in the cylinder 16 extends in the push rod groove 1107. The slider 1602 on the push rod 1601 pushes the chute 1 The sheet in 108 moves toward the punching groove 1102. When the slider 1602 on the push rod 1601 moves to the side of the punching groove 1102, the sheet has fallen into the movable plate 14 and the top block 1104 in the punching groove 1102. At the same time, the sheet on the lower die core 11 adjusts its position to align the part to be punched with the blanking hole 1101. When the punched sheet falls into the punching groove 1102 and the sheet on the lower die core 11 adjusts its position, the equipment again causes the upper die 1 to start compressing downward, and its punching punch 8 punches the sheet again, so that the punched sheet falls into the slide groove 1108 under the blanking hole 1101. At the same time, the punching punch 9 also punches the previous punched sheet in the punching groove 1102. In this process, the movable plate 14 is in the punching The punch 9 begins to move downward under the pressure, and the spring 2 15 under the movable plate 14 begins to be compressed. At the same time, the slide bar 1401 under the movable plate 14 moves downward in the limiting hole 1105 of the support 1103. When the movable plate 14 is compressed by the punch 9 so that the bottom contacts the upper side of the support 1103, the punched sheet is also punched and formed into a processed workpiece. The punching of the sheet and the punching of the punched sheet are completed at the same time. When these two processes are completed, the equipment raises the upper mold 1 again, and the punching punch 8 and the punching punch 9 thereon leave the blanking hole 1101 and the punching groove 1102 again. At the same time, the compressed spring 2 15 under the movable plate 14 begins to rebound, and the rebounding spring 2 15 pushes the movable plate 14 up.The slide bar 1401 on the movable plate 14 also moves together in the limiting hole 1105, and the rising movable plate 14 drives the workpiece thereon. When the movable plate 14 rises to be flush with the top block 1104, the slide bar 1401 under the movable plate 14 is limited by the limiting hole 1105, so that the movable plate 14 stops rising, and the spring 15 returns to the state before being compressed by the punch 9. The workpiece on the movable plate 14 continues to rise under the action of inertia and is ejected from the punching groove 1102. When the workpiece is ejected from the punching groove 1102, the upper mold 1 also returns to the height before compression, and the slider 1602 in the slide groove 1108 pushes the punched sheet in the slide groove 1108 into the punching groove 1102 again. At this time, the ejected workpiece is put away and the position of the sheet on the lower die core 11 is adjusted again to wait for the next punching and stamping.

[0035] Through the above technical solution, 1. by combining the blanking punch and the stamping punch in one die, blanking and stamping are completed step by step in one die, thereby simplifying the operation, improving work efficiency, and reducing the cost of use.

[0036] 2. The punched workpiece is ejected from the punching groove by the cooperation of the movable plate and the spring, so that the operator does not need to take the workpiece out of the punching groove, thereby reducing the labor intensity and ensuring the personal safety of the operator.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-punch step-by-step punching die, characterized in that: The invention comprises an upper die (1) and a lower die (10), wherein the upper die (1) and the lower die (10) are provided with corresponding guide holes (5), wherein guide posts (6) are installed in the guide holes (5), wherein the guide posts (6) are matched with the guide holes (5), wherein the upper die (1) is connected to the lower die (10) via the guide posts (6), wherein the upper die (1) is provided with corresponding punch mounting holes (7), wherein the punch mounting holes (7) are respectively provided with a shearing punch (8) and a stamping punch (9) which are matched with the punch mounting holes, wherein the stamping punch (9) is longer than the shearing punch (8), and wherein the shearing punch (8) and the stamping punch (9) are symmetrically arranged on the upper die (1).

2. A multi-punch step-by-step punching die according to claim 1, characterized in that: Gaskets (3) are installed in both the upper mold (1) and the lower mold (10); the upper mold (1) comprises an upper mold base (2), a gasket (3), and an upper mold core (4); a mold handle (201) is provided on the upper side of the upper mold base (2); the mold handle (201) is located in the middle of the upper mold base (2); a gasket (3) is installed on the lower side of the upper mold base (2); one side of the gasket (3) is in close contact with the lower side of the upper mold base (2), and the other side of the gasket (3) is in close contact with the upper side of the upper mold core (4).

3. The multi-punch step-by-step punching die according to claim 1, characterized in that: The lower mold (10) comprises a lower mold base (17), a gasket (3), and a lower mold core (11); the gasket (3) is installed on the lower mold base (17); the lower mold core (11) is installed on the gasket (3); the lower mold core (11) and the upper mold core (4) are provided with corresponding spring grooves (12); the spring groove (12) is coaxial with the guide hole (5); the spring groove (12) is larger than the guide hole (5); a spring (13) is installed in the spring groove (12); the spring (13) is sleeved on the guide column (6); and the two ends of the spring (13) are respectively abutted against the upper mold core (4) and the lower mold core (11).

4. The multi-punch step-by-step punching die according to claim 3, characterized in that: The lower die core (11) is provided with a blanking hole (1101), the position of the blanking hole (1101) corresponds to the punch (8), and the blanking hole (1101) fits the punch (8).

5. The multi-punch step-by-step punching die according to claim 3, characterized in that: The lower die core (11) is provided with a stamping groove (1102), the position of the stamping groove (1102) corresponds to the stamping punch (9), the stamping groove (1102) and the stamping punch (9) are matched, the inner diameter of the stamping groove (1102) is equal to the blanking hole (1101), a support platform (1103) is provided in the stamping groove (1102), a top block (1104) is provided in the stamping groove (1102), the top block (1104) is located in the support platform (1103), the top block (1104) is higher than the support platform (1103), a plurality of limiting holes (1105) are provided in the support platform (1103), and the limiting holes (1105) are evenly arranged in the support platform (1103).

6. The multi-punch step-by-step punching die according to claim 3, characterized in that: The lower die core (11) is provided with a cylinder mounting groove (1106), the cylinder mounting groove (1106) is located on one side of the lower die core (11), and the cylinder mounting groove (1106) is relatively located below the blanking hole (1101). The lower die core (11) is provided with a push rod groove (1107), one end of the push rod groove (1107) is connected to one end of the cylinder mounting groove (1106), and the other end of the push rod groove (1107) is opened on one side of the stamping groove (1102). The lower die core (11) is provided with a slide groove (1108), the slide groove (1108) is located directly above the push rod groove (1107), the width of the slide groove (1108) is equal to the inner diameter of the blanking hole (1101), and the slide groove (1108) is located below the blanking hole (1101).

7. The multi-punch step-by-step punching die according to claim 5, characterized in that: A movable plate (14) is installed in the stamping groove (1102), and a plurality of slide bars (1401) are provided on the movable plate (14), and the slide bars (1401) are installed in the limiting holes (1105). The inner diameter of the movable plate (14) matches the top block (1104), and a second spring (15) is installed between the support platform (1103) and the top block (1104). The second spring (15) is sleeved on the top block (1104), and the two ends of the second spring (15) are respectively abutted against the bottom side of the movable plate (14) and the bottom of the stamping groove (1102), and the movable plate (14) is flush with the top block (1104).

8. The multi-punch step-by-step punching die according to claim 6, characterized in that: A cylinder (16) is installed in the cylinder installation groove (1106), a push rod (1601) is provided in the cylinder (16), a slider (1602) is provided on the push rod (1601), the push rod (1601) is matched with the push rod groove (1107), the slider (1602) is installed in the slide groove (1108), and the slider (1602) is matched with the slide groove (1108).

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