CN222403068U

CN222403068U - Multi-punch step-by-step blanking stamping die

Info

Publication number: CN222403068U
Application number: CN202420336485.0U
Authority: CN
Inventors: 金爱民; 黄章红
Original assignee: Anhui Feixiang Electrical Appliance Co ltd
Current assignee: Anhui Feixiang Electrical Appliance Co ltd
Priority date: 2024-02-23
Filing date: 2024-02-23
Publication date: 2025-01-28
Anticipated expiration: 2034-02-23

Abstract

The utility model discloses a multi-punch step-by-step blanking stamping die, and relates to the technical field of punch dies. The utility model comprises an upper die and a lower die, wherein 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, punching punches and stamping punches matched with the punch mounting holes are arranged in the punch mounting holes Bie An, the stamping punches are longer than the punching punches, and the punching punches and the stamping punches are symmetrically arranged on the upper die. The method has the advantages that blanking and stamping are completed in one die in a divided mode, so that operation is simplified, working efficiency is improved, and use cost is reduced.

Description

Multi-punch step-by-step blanking stamping die

Technical Field

The utility model belongs to the technical field of punch dies, and particularly relates to a multi-punch step-by-step blanking stamping die.

Background

At present, when some machines are processed, materials are punched through a punching punch die, and then the required workpiece is obtained through punching and forming through the punching punch die, so that the punch die needs to be replaced frequently in the production process, the operation is complex, the labor intensity is improved, the working efficiency is reduced, inconvenience is brought to the production, and different punch dies need to be manufactured in the production process, and the use cost is increased.

Disclosure of utility model

Aiming at the problems in the related art, the utility model provides a multi-punch step-by-step blanking stamping die, which aims to overcome the technical problems in the prior art.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

The utility model relates to a multi-punch step-by-step blanking stamping die which comprises an upper die and a lower die, wherein 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, blanking punches and stamping punches matched with the punch mounting holes are installed in the punch mounting holes Bie An, the stamping punches are longer than the blanking punches, and the blanking punches and the stamping punches are symmetrically arranged on the upper die.

Further, the gasket is installed in the upper die and the lower die, the upper die comprises an upper die base, a gasket and an upper die core, a die shank is arranged on the upper side of the upper die base, the die shank is located in the middle of the upper die base, the gasket is installed on the lower side of the upper die base, one side of the gasket is tightly attached to the lower side of the upper die base, and the other side of the gasket is tightly attached to the upper side of the upper die core.

Further, the lower die comprises a lower die base, a gasket and a lower die core, the gasket is arranged on the lower die base, the lower die core is arranged on the gasket, the lower die core and the upper die core are provided with corresponding spring grooves, the spring grooves and the guide holes are coaxial, the spring grooves are larger than the guide holes, a first spring is arranged in the spring grooves and sleeved on the guide post, and two ends of the first spring are propped against the upper die core and the lower die core respectively.

Further, a blanking hole is formed in the lower die core, the position of the blanking hole corresponds to that of the blanking punch, and the blanking hole is matched with the blanking punch.

Further, the punching groove is formed in the lower die core, the position of the punching groove corresponds to that of the punching punch, the punching groove is matched with the punching punch, the inner diameter of the punching groove is equal to that of the blanking hole, a supporting table is arranged in the punching groove, a jacking block is arranged in the punching groove and is located in the supporting table, the jacking block is higher than the supporting table, a plurality of limiting holes are formed in the supporting table, and the limiting holes are uniformly arranged in the supporting table.

Further, the cylinder mounting groove has been seted up in the lower mould benevolence, the cylinder mounting groove is located one side of lower mould benevolence, the cylinder mounting groove is located the below of blanking hole relatively, the push rod groove has been seted up in the lower mould benevolence, the one end in push rod groove is connected with the one end in cylinder mounting groove, one side in the punching press groove is seted up to the other end in push rod groove, the spout has been seted up in the lower mould benevolence, the spout is located the push rod groove directly over, the width of spout equals with the internal diameter of blanking hole, the spout is located the below of blanking hole.

Further, the movable plate is arranged in the stamping groove, a plurality of sliding rods are arranged on the movable plate, the sliding rods are arranged in the limiting holes, the inner diameter of the movable plate is matched with the top block, a second spring is arranged between the supporting table and the top block and is sleeved on the top block, two ends of the second spring are propped against the bottom side of the movable plate and the bottom of the stamping groove respectively, and the movable plate is flush with the top block.

Further, an air cylinder is arranged in the air cylinder mounting groove, a push rod is arranged in the air cylinder, a sliding block is arranged on the push rod, the push rod is matched with the push rod groove, the sliding block is arranged in the sliding groove, and the sliding block is matched with the sliding groove.

The utility model has the advantages that by using a multi-punch step-by-step blanking stamping die, firstly placing the die on equipment, fixing an upper die handle on an upper die seat of the upper die and a sliding block of equipment above the die handle after the die is adjusted, fixing a lower die seat of the lower die on the equipment through a clamp, adjusting the distance between the upper die and the lower die after the die is fixed, starting the equipment to work after the preparation work is finished, placing a prepared plate on a lower die core in the die, the plate is positioned below the blanking punch, pushing down the upper die downwards by the plate after the plate is put down, compressing the upper die downwards along a guide post, gradually closing the upper die core with the blanking punch and the punching punch on the upper die, starting the blanking punch to work in advance, dropping the plate into a chute below the blanking punch through the blanking punch, starting the upper die, aligning the blanking punch and the punching punch with the upper die core to the sliding block in the chute, and simultaneously lifting the upper die core to the sliding block, and the ram in the punching slot when the punching ram is aligned with the upper die core and the sliding block is lifted, and the ram is moved to the ram in the punching slot when the punching is started to stretch the punching slot After the plate on the lower die core is adjusted, the equipment starts to compress downwards again, the blanking punch of the equipment punches the plate again, the blanking punch of the equipment drops into the chute below the blanking hole, the blanking punch of the equipment also punches the plate in the punching groove, simultaneously, the movable plate starts to move downwards under the pressure of the punching punch, the spring II below the movable plate starts to compress, the slide bar below the movable plate moves downwards in the limiting hole of the supporting table, when the bottom of the movable plate compressed by the blanking punch is contacted with the upper side of the supporting table, the blanking of the plate is also completed at the same time by the blanking punch, the equipment lifts the upper die again after the two processes are completed, the blanking punch of the plate and the punching punch of the equipment leave the blanking hole and the punching groove again, simultaneously, the spring II compressed below the movable plate starts to rebound, the spring II pushes the movable plate to move in the limiting hole, the movable plate drives the movable plate to lift the upper workpiece, the movable plate is lifted by the movable plate to be contacted with the upper side of the supporting plate, the lower plate is lifted by the sliding block, the sliding block is lifted by the sliding plate is also lifted by the sliding plate again, the sliding plate is stopped before the sliding plate is lifted by the sliding plate is lifted up by the sliding plate again, the sliding plate is lifted by the sliding plate again, the sliding plate is stopped at the sliding plate is lifted by the sliding plate again, the sliding plate is stopped by the sliding plate is stopped, the sliding plate is ejected by the sliding plate is stopped, and the sliding plate is ejected by the sliding plate, and the sliding plate is ejected by the sliding down, The punching is carried out by combining the punching punch and the punching punch in the same die, so that the punching and the punching are completed in the same die, the operation is simplified, the working efficiency is improved, the use cost is reduced, the punched workpiece is ejected out of the punching groove through the matching of the movable plate and the spring II, an operator does not need to take out the workpiece from the punching groove, the labor intensity is reduced, and the personal safety of the operator is ensured.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings that are needed for the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an exploded cross-sectional structure of the present utility model;

FIG. 2 is a schematic view of the left side cross-sectional structure of the present utility model;

FIG. 3 is a right side schematic view of the present utility model;

FIG. 4 is a schematic diagram of the front structure of the present utility model;

FIG. 5 is a schematic view of the structure of the present utility model shown in FIG. 1 at a partially enlarged scale;

fig. 6 is a schematic view of a partial enlarged structure at B of fig. 1 according to the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. The upper die, the upper die holder, 201, the die shank, 3, the gasket, 4, the upper die core, 5, the guide hole, 6, the guide pillar, 7, the punch mounting hole, 8, the punching punch, 9, the punching punch, 10, the lower die, 11, the lower die core, 1101, the blanking hole, 1102, the punching groove, 1103, the supporting table, 1104, the top block, 1105, the limiting hole, 1106, the cylinder mounting groove, 1107, the push rod groove, 1108, the sliding groove, 12, the spring groove, 13, the first spring, 14, the movable plate, 1401, the slide bar, 15, the second spring, 16, the cylinder, 1601, the push rod, 1602, the slide block, 17 and the lower die holder.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, based on the embodiments in the utility model, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "open," "upper," "lower," "top," "middle," "inner," and the like indicate an orientation or positional relationship, merely for convenience of description and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

Referring to fig. 1-6, the utility model discloses a multi-punch step-by-step blanking stamping die, which comprises an upper die 1 and a lower die 10, wherein corresponding guide holes 5 are formed in the upper die 1 and the lower die 10, guide columns 6 are installed in the guide holes 5, the guide columns 6 are matched with the guide holes 5, the upper die 1 is connected with the lower die 10 through the guide columns 6, corresponding punch mounting holes 7 are formed in the upper die 1, blanking punches 8 and stamping punches 9 matched with the punch mounting holes are respectively installed in the punch mounting holes 7, the stamping punches 9 are longer than the blanking punches 8, and 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 firstly placed on equipment, an upper die handle 201 on an upper die holder 2 of an upper die 1 is fixed with a sliding block of the equipment above the upper die handle 201 after the position is adjusted, a lower die holder 17 of a lower die 10 is fixed on the equipment through a clamp, after the die is fixed, the distance between the upper die 1 and the lower die 10 is adjusted, and after preparation work is finished, the equipment is started to work, a prepared plate is placed on a lower die core 11 in the die, the plate is positioned below a blanking punch 8, the equipment pushes the upper die 1 downwards after the plate is put down, the upper die 1 compresses downwards along a guide pillar 6, the blanking punch 8 performs blanking on the plate, meanwhile, a stamping punch 9 performs stamping on the plate which has been blanked on the upper die 1 in a stamping groove 1102, after the two processes are finished, the upper die 1 is lifted again, the blanking punch 8 and the stamping punch 9 leave the blanking hole 1101 and the stamping groove 1102 again, the blanking punch and the stamping punch are combined in the die, so that the blanking and the stamping are finished in the die in a step, the operation is simplified, the work efficiency is improved, and reduces the cost of use.

In one embodiment, for the multi-punch step-blanking stamping die, the upper die 1 and the lower die 10 are internally provided with the gasket 3, the upper die 1 comprises an upper die holder 2, the gasket 3 and an upper die core 4, the upper side of the upper die holder 2 is provided with a die shank 201, the die shank 201 is positioned in the middle of the upper die holder 2, the gasket 3 is installed on the lower side of the upper die holder 2, one side of the gasket 3 is tightly attached to the lower side of the upper die holder 2, and the other side of the gasket 3 is tightly attached to the upper side of the upper die core 4.

In one embodiment, for the multi-punch step-by-step punching and stamping die, the lower die 10 comprises a lower die holder 17, a gasket 3 and a lower die core 11, the gasket 3 is installed on the lower die holder 17, the lower die core 11 is installed on the gasket 3, a corresponding spring groove 12 is formed in the lower die core 11 and the upper die core 4, the spring groove 12 is coaxial with the guide hole 5, the spring groove 12 is larger than the guide hole 5, a first spring 13 is installed in the spring groove 12, the first spring 13 is sleeved on the guide post 6, two ends of the first spring 13 are respectively propped against the upper die core 4 and the lower die core 11, the lower die holder 17 is fixed on equipment through a clamp, the gasket 3 plays roles of buffering, protecting the die and the like in the punching and stamping process, and the first spring 13 can improve the stability of the die.

In one embodiment, for the multi-punch step-and-punch stamping die, the lower die core 11 is provided with a blanking hole 1101, the position of the blanking hole 1101 corresponds to the position of the blanking punch 8, and the blanking hole 1101 is matched with the blanking punch 8.

In one embodiment, for the multi-punch step-by-step punching and stamping die, the lower die core 11 is provided with a punching slot 1102, the position of the punching slot 1102 corresponds to that of the punching punch 9, the punching slot 1102 is matched with the punching punch 9, the inner diameter of the punching slot 1102 is equal to that of the blanking hole 1101, a supporting table 1103 is arranged in the punching slot 1102, a top block 1104 is arranged in the punching slot 1102, the top block 1104 is positioned in the supporting table 1103, the top block 1104 is higher than the supporting table 1103, a plurality of limiting holes 1105 are formed in the supporting table 1103, and the limiting holes 1105 are uniformly arranged in the supporting table 1103.

In one embodiment, for the multi-punch step-punching stamping die, the lower die core 11 is provided with the cylinder mounting groove 1106 therein, the cylinder mounting groove 1106 is located at one side of the lower die core 11, the cylinder mounting groove 1106 is relatively located below the blanking hole 1101, the lower die core 11 is provided with the push rod groove 1107, one end of the push rod groove 1107 is connected with one end of the cylinder mounting groove 1106, the other end of the push rod groove 1107 is provided with one side of the stamping groove 1102, the lower die core 11 is provided with the slide groove 1108, the slide groove 1108 is located right above the push rod groove 1107, the width of the slide groove 1108 is equal to the inner diameter of the blanking hole 1101, the slide groove 1108 is located below the blanking hole 1101, and the width of the slide groove 1108 is equal to the inner diameter of the blanking hole 1101, so that the punched plate can be accurately pushed into the stamping groove 1102 by the slide block 1602.

In one embodiment, for the multi-punch step-by-step punching and stamping die, a movable plate 14 is installed in the stamping groove 1102, a plurality of sliding rods 1401 are arranged on the movable plate 14, the sliding rods 1401 are installed in the limiting holes 1105, the inner diameter of the movable plate 14 is matched with the top block 1104, a second spring 15 is installed between the supporting platform 1103 and the top block 1104, the second spring 15 is sleeved on the top block 1104, two ends of the second spring 15 are respectively propped 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; in the process of stamping, the movable plate 14 starts to move downwards under the pressure of the stamping punch 9, the second spring 15 under the movable plate 14 starts to compress, meanwhile, the sliding rod 1401 under the movable plate 14 moves downwards in the limiting hole 1105 of the supporting platform 1103, stamping is completed when the bottom of the movable plate 14 is compressed by the stamping punch 9 and is contacted with the upper side of the supporting platform 1103, when the stamping punch 9 starts to leave the stamping slot 1102, the second spring 15 compressed under the movable plate 14 starts to rebound, the rebound spring 15 pushes the movable plate 14 to lift up, the sliding rod 1401 on the movable plate 14 moves together in the limiting hole 1105, the rising movable plate 14 drives a workpiece thereon, when the movable plate 14 rises to be level with the top block 1104, the sliding rod 1401 under the movable plate 14 is limited by the limiting hole 1105, so that the movable plate 14 stops rising, the second spring 15 returns to a state of not being compressed by the stamping punch 9 before, the workpiece on the movable plate 14 continues to rise up to the ejected slot 1102 under the action of inertia, when the workpiece is ejected from the stamping slot 1102, the upper die 1 is carried by the upper die 1, the workpiece is not compressed back into the stamping slot 1102, and the workpiece is not taken out from the stamping operation is reduced, and the personal safety of operators is ensured.

In one embodiment, for the multi-punch step-and-punch stamping die, the cylinder 16 is installed in the cylinder installation groove 1106, the push rod 1601 is arranged in the cylinder 16, the slide block 1602 is arranged on the push rod 1601, the push rod 1601 is matched with the push rod groove 1107, the slide block 1602 is installed in the slide groove 1108, the slide block 1602 is matched with the slide groove 1108, the push rod 1601 in the cylinder 16 extends in the push rod groove 1107, the slide block 1602 on the push rod 1601 pushes the plate in the slide groove 1108 to move towards the stamping groove 1102, and finally the plate is pushed into the stamping groove 1102.

In summary, by means of the above technical solution of the present utility model, by using a multi-punch step-blanking stamping die, the die is first placed on a device, after the position is adjusted, the upper die shank 201 on the upper die holder 2 of the upper die 1 is fixed with the slide block of the device above it, the lower die holder 17 of the lower die 10 is fixed on the device by a clamp, after the die is fixed, the distance between the upper die 1 and the lower die 10 is adjusted, after the preparation is completed, the device is started to start working, the prepared plate is placed on the lower die core 11 in the die, the plate is located below the blanking punch 8, the device pushes the upper die 1 downward after the plate is put down, the upper die 1 is compressed downward along the guide post 6, during this process, the first spring 13 between the upper die core 4 and the lower die core 11 is compressed, so that the upper die 1 is stably compressed, the blanking punch 8 and the stamping punch 9 on the upper die 1 gradually approach the lower die core 11, the blanking punch 8 starts working first, the blanking punch 8 performs blanking on the plate, the blanked plate falls into a chute 1108 below the blanking punch 8 through a blanking hole 1101, after the blanking punch 8 performs blanking on the plate, the equipment starts to lift the upper die 1, the blanking punch 8 and the stamping punch 9 on the upper die 1 lift from the blanking hole 1101 and the stamping slot 1102 on the lower die core 11, in the process, a cylinder 16 in a cylinder mounting slot 1106 on the lower die core 11 starts working, a push rod 1601 in the cylinder 16 stretches in the push rod slot 1107, a slide block 1602 on the push rod 1601 pushes the plate in the chute 1108 to move towards the stamping slot 1102, when the slide block 1602 on the push rod 1601 moves to the side of the stamping slot 1102, the plate already falls onto a movable plate 14 and a top block 1104 in the stamping slot 1102, and simultaneously, the plate adjusting position on the lower die core 11 aligns the part to be blanked with the blanking hole 1101, when the blanked sheet falls into the punching slot 1102, After the plate on the lower die core 11 is well positioned, the device starts to compress the upper die 1 downwards again, the blanking punch 8 thereof punches the plate again, the punched plate falls into the chute 1108 under the blanking hole 1101, meanwhile, the punching punch 9 punches the last punched plate in the punching slot 1102, in the process, the movable plate 14 starts to move downwards under the pressure of the punching punch 9, the spring II 15 under the movable plate 14 starts to compress, meanwhile, the slide bar 1401 under the movable plate 14 moves downwards in the limit hole 1105 of the supporting platform 1103, when the bottom of the movable plate 14 is compressed by the punching punch 9 to be contacted with the upper side of the supporting platform 1103, the punched plate is also punched and formed into a processed workpiece, the punching of the plate and the punching of the punched plate are completed at the same time, after the two processes are completed, the device lifts the upper die 1 again, the blanking punch 8 and the punching punch 9 on the upper blanking punch 8 leave the blanking hole 1101 and the punching slot 1102 again, meanwhile, the compressed spring II 15 below the movable plate 14 begins to rebound, the rebound spring II pushes the movable plate 14 to lift, the sliding rod 1401 on the movable plate 14 moves together in the limiting hole 1105, the rising movable plate 14 drives the workpiece on the movable plate, when the movable plate 14 rises to be level with the top block 1104, the sliding rod 1401 below the movable plate 14 is limited by the limiting hole 1105, so that the movable plate 14 stops rising, the spring II returns to the state not compressed by the punching punch 9 before, the workpiece on the movable plate 14 continues to rise under the action of inertia and is ejected out of the punching slot 1102, when the workpiece is ejected out of the punching slot 1102, the upper die 1 also returns to the height before compression, the sliding block 1602 in the sliding slot 1108 pushes the punched plate in the sliding slot 1108 into the punching slot 1102 again, at this time, the ejected work is retracted and the position of the plate on the lower die 11 is adjusted again to wait for the next blanking, and (5) stamping.

Through above-mentioned technical scheme, 1, through combining blanking drift and punching press drift in a mould for blanking, punching press are accomplished in a mould step by step, thereby have simplified the operation and have improved work efficiency, and reduced the cost of using.

2. The punched workpiece is ejected out of the punching groove through the matching of the movable plate and the second spring, so that an operator does not need to take out the workpiece from the punching groove, the labor intensity is reduced, and the personal safety of the operator is ensured.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above disclosed preferred embodiments of the utility model are merely intended to help illustrate the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The multi-punch step-by-step blanking stamping die is characterized by comprising an upper die (1) and a lower die (10), wherein corresponding guide holes (5) are formed in the upper die (1) and the lower die (10), guide columns (6) are arranged in the guide holes (5), the guide columns (6) are matched with the guide holes (5), the upper die (1) is connected with the lower die (10) through the guide columns (6), corresponding punch mounting holes (7) are formed in the upper die (1), blanking punches (8) and stamping punches (9) matched with the punch mounting holes are respectively arranged in the punch mounting holes (7), the stamping punches (9) are longer than the blanking punches (8), and the blanking punches (8) and the stamping punches (9) are symmetrically arranged on the upper die (1).

2. The multi-punch step blanking stamping die according to claim 1, wherein gaskets (3) are arranged in the upper die (1) and the lower die (10), the upper die (1) comprises an upper die holder (2), gaskets (3) and an upper die core (4), a die shank (201) is arranged on the upper side of the upper die holder (2), the die shank (201) is located in the middle of the upper die holder (2), the gaskets (3) are arranged on the lower side of the upper die holder (2), one side of each gasket (3) is tightly attached to the lower side of the upper die holder (2), and the other side of each gasket (3) is tightly attached to the upper side of the corresponding upper die core (4).

3. The multi-punch step blanking stamping die according to claim 1, wherein the lower die (10) comprises a lower die holder (17), a gasket (3) and a lower die core (11), the gasket (3) is arranged on the lower die holder (17), the lower die core (11) is arranged on the gasket (3), a corresponding spring groove (12) is formed in the lower die core (11) and the upper die core (4), the spring groove (12) is coaxial with the guide hole (5), the spring groove (12) is larger than the guide hole (5), a first spring (13) is arranged in the spring groove (12), the first spring (13) is sleeved on the guide post (6), and two ends of the first spring (13) are respectively propped against the upper die core (4) and the lower die core (11).

4. A multi-punch step-by-step blanking stamping die as claimed in 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 that of the blanking punch (8), and the blanking hole (1101) is matched with the blanking punch (8).

5. The multi-punch step blanking stamping die according to claim 3, wherein the lower die core (11) is provided with a stamping groove (1102), the stamping groove (1102) is located corresponding to the stamping punch (9), the stamping groove (1102) is matched with the stamping punch (9), the inner diameter of the stamping groove (1102) is equal to that of the blanking hole (1101), a supporting table (1103) is arranged in the stamping groove (1102), a top block (1104) is arranged in the stamping groove (1102), the top block (1104) is located in the supporting table (1103), the top block (1104) is higher than the supporting table (1103), a plurality of limiting holes (1105) are formed in the supporting table (1103), and the limiting holes (1105) are uniformly arranged in the supporting table (1103).

6. The multi-punch step-by-step blanking stamping die according to claim 3, wherein a cylinder mounting groove (1106) is formed in the lower die core (11), the cylinder mounting groove (1106) is located at one side of the lower die core (11), the cylinder mounting groove (1106) is located below the blanking hole (1101) relatively, a push rod groove (1107) is formed in the lower die core (11), one end of the push rod groove (1107) is connected with one end of the cylinder mounting groove (1106), the other end of the push rod groove (1107) is formed at one side of the stamping groove (1102), a sliding groove (1108) is formed in the lower die core (11), the sliding groove (1108) is located right above the push rod groove (1107), the width of the sliding groove (1108) is equal to the inner diameter of the blanking hole (1101), and the sliding groove (1108) is located below the blanking hole (1101).

7. The multi-punch step blanking stamping die according to claim 5, wherein a movable plate (14) is installed in the stamping groove (1102), a plurality of sliding rods (1401) are arranged on the movable plate (14), the sliding rods (1401) are installed in limiting holes (1105), the inner diameter of the movable plate (14) is matched with that of the top block (1104), a second spring (15) is installed between the supporting table (1103) and the top block (1104), the second spring (15) is sleeved on the top block (1104), two ends of the second spring (15) are respectively propped 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-blanking stamping die of claim 6, wherein a cylinder (16) is installed in the cylinder installation groove (1106), a push rod (1601) is arranged in the cylinder (16), a sliding block (1602) is arranged on the push rod (1601), the push rod (1601) is matched with the push rod groove (1107), the sliding block (1602) is installed in the sliding groove (1108), and the sliding block (1602) is matched with the sliding groove (1108).