CN215199220U

CN215199220U - Punching die

Info

Publication number: CN215199220U
Application number: CN202121111177.0U
Authority: CN
Inventors: 吴挺; 黎华平
Original assignee: Taizhou Vocational and Technical College
Current assignee: Taizhou Vocational and Technical College
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-12-17
Anticipated expiration: 2031-05-21

Abstract

The utility model provides a punching die belongs to mould technical field. It has solved the problem of how to improve the production efficiency of punching a hole processing among the prior art. The utility model provides a punching die, includes mould and lower mould, be provided with the material locating plate that is used for the work piece location and can reciprocate on the lower mould, the locating hole that is used for the work piece location has on the material locating plate, be provided with the first drift of a plurality of that can punch a hole to the work piece that sets up in the locating hole on the lower mould, be provided with the elastic component between material locating plate and the lower mould, still be provided with on the lower mould and can punch a hole and can be with the ejecting material returned structure that punches a hole of work piece in the locating hole to the work piece in the locating hole, go up be provided with on the mould with the same and with the through-hole of the first drift one-to-one of a plurality of with first drift quantity, all cross-under have in every through-hole can be with the ejecting material returned pole of waste material that first drift was punched out. This cut-out press has improved the production efficiency of processing of punching a hole.

Description

Punching die

Technical Field

The utility model belongs to the technical field of the mould, concretely relates to cut-out press.

Background

The punching die is one of stamping dies, and punching processing of a workpiece is realized through blanking of a punch.

The in-process of processing of punching a hole to the work piece through cut-out press now, generally need manually fix the work piece on last mould or lower mould, then make through the lathe go up mould and lower mould and carry out the compound die, the processing of punching a hole to the work piece is realized through the drift, the processing of punching a hole is accomplished the back, dismantle the work piece from the mould again, the manual dismantlement of installing is carried out to the work piece, simultaneously because the in-process of punching a hole, the impact force of drift is too big, the waste material card that probably leads to punching a hole to produce is in the mould, inconvenient taking out, influence next time processing operation, thereby influence the process velocity, lead to the work piece to punch a hole the production efficiency of processing low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a punching die, the utility model aims to solve the technical problem that: how to improve the production efficiency of punching processing.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a punching die, includes mould and lower mould, be provided with the material locating plate that is used for the work piece location and can reciprocate on the lower mould, the locating hole that is used for the work piece location has on the material locating plate, be provided with the first drift of a plurality of that can punch a hole to the work piece that sets up in the locating hole on the lower mould, be provided with the elastic component between material locating plate and the lower mould, still be provided with on the lower mould and can punch a hole and can be with the ejecting material returned structure that punches a hole of work piece in the locating hole to the work piece in the locating hole, go up be provided with on the mould with the same and with the through-hole of the first drift one-to-one of a plurality of with first drift quantity, all cross-under have in every through-hole can be with the ejecting material returned pole of waste material that first drift was punched out.

The workpiece is placed in a positioning hole in a material positioning plate, an upper die moves downwards to contact with the material positioning plate and then presses the workpiece through the movement of a machine tool, the upper die continues to move downwards to press the material positioning plate, a plurality of first punches and a punching and material returning structure complete punching of the workpiece, punched waste materials enter corresponding through holes respectively, after punching is completed, the machine tool returns to drive the upper die to move upwards, a material returning rod ejects the waste materials in the corresponding through holes, the material positioning plate arranged on a lower die is pushed to the original position under the action of an elastic piece, then the workpiece is ejected through the punching and material returning structure, multiple punching processes of the workpiece can be completed at one time, the waste materials can be directly ejected, the workpiece can be punched and processed while the next workpiece is conveniently produced, and the production efficiency of the punching processes is improved.

In foretell cut-out press, the material returned structure that punches a hole includes first material returned piece, second drift and compression spring, first material returned piece wears to connect on the material locating plate and can stretch into the locating hole, the second drift wears to connect on first material returned piece and can stretch into in the locating hole, compression spring sets up between lower mould and first material returned piece. The second punch can be directly upwards used for punching a hole in the positioning hole in the process of pressing down the upper die, the compression spring enables the first material returning block to reset after pressing down, the first material returning block can eject the workpiece which is punched in the positioning hole, and the workpiece which is punched conveniently is quickly taken out, so that the production efficiency is improved.

In the punching die, the punching and material returning structure further comprises a plurality of material pushing rods, and the plurality of material pushing rods are connected to the lower die in a penetrating mode and can push the first material returning blocks to move upwards. After the workpiece in the positioning hole is punched, the first material returning block is pushed upwards to the first material returning block through the plurality of material pushing rods, so that the workpiece in the positioning hole can be quickly ejected out by the first material returning block, the workpiece after punching is conveniently taken out quickly, and the production efficiency is improved.

In the above-described punching die, a protruding strip is formed to protrude from a side portion of the second punch. The sand grip directly realizes the processing of the workpiece groove in the process of punching the workpiece by the second punch without additionally processing the groove, thereby reducing the processing procedures and improving the production efficiency.

In the punching die, the lower die is fixedly connected with a fixing plate, a plurality of first punches are fixed on the fixing plate, and each first punch is connected to the material positioning plate in a penetrating manner and can extend into the positioning hole. The fixed plate is used for installing the first punches of the plurality of, and the first punches of the plurality of can be guaranteed to punch a hole to the work piece in the locating hole.

In foretell cut-out press, go up mould downside fixedly connected with die, the through-hole sets up on the die, upward be provided with the second material returned piece that can reciprocate on the mould, the second material returned piece is located the top of a plurality of material returned pole. After the work piece in the locating hole is punched by the first punches of a plurality of, the waste material after punching enters into the corresponding through-hole in the die respectively, and the waste material in the through-hole that the removal promoted a plurality of material returned pole through the second material returned piece is ejecting with corresponding, avoids the waste material card in the die, influences the processing of punching a hole next time.

In foretell cut-out press, be fixed with a plurality of on the lower mould and be the first guide pillar of circumference distribution, every first guide pillar all passes the material locating plate and makes the material locating plate can reciprocate along first guide pillar, all is provided with on every first guide pillar and carries out spacing cushion to the material locating plate. The material positioning plate is guaranteed to move up and down along the first guide pillar, the first punch is enabled to achieve the position degree and the flatness of workpiece machining, and the machining precision of punching machining is improved.

In the punching die, the elastic pieces are nitrogen springs or compression springs, the elastic pieces are a plurality of elastic pieces, and the elastic pieces are circumferentially distributed on the lower die. The elastic part has large compression force, and ensures the material positioning plate to stably run up and down.

In the punching die, the lower die is provided with the guide post, the upper die is provided with the guide sleeve, and the guide sleeve is sleeved on the guide post. The upper and lower guide movement of the lower die and the upper die is ensured, and the processing precision of punching processing is ensured.

Compared with the prior art, the punching die has the advantages that:

1. the punching machine can directly complete a plurality of punching processes of a workpiece at one time, and can also directly eject waste materials, so that the workpiece can complete the punching process and simultaneously facilitate the production of the next workpiece, and the production efficiency of the punching process is improved.

2. The material positioning plate is guaranteed to move up and down along the first guide pillar, the first punch is enabled to achieve the position degree and the flatness of workpiece machining, and the machining precision of punching machining is improved.

3. The lower die and the upper die move up and down in a guiding manner, so that the machining precision of punching is guaranteed.

Drawings

FIG. 1 is a sectional view of the present punching die.

FIG. 2 is a schematic structural view of the present punching die.

Figure 3 is an exploded view of the present punch die.

Fig. 4 is a schematic structural view of the second punch.

Fig. 5 is an enlarged view of a portion a of fig. 3.

In the figure, 1, an upper die; 1a, a through hole; 1b, a guide sleeve; 2. a lower die; 2a, a guide post; 3. a material positioning plate; 31. positioning holes; 4. a first punch; 5. an elastic member; 6. a first material returning block; 7. a second punch; 7a, convex strips; 8. a compression spring; 9. a lifter bar; 10. a fixing plate; 11. a female die; 12. a second material returning block; 13. cushion blocks; 14. a material returning rod; 21. a first guide post.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-5, a punching die comprises an upper die 1 and a lower die 2, a material positioning plate 3 which is used for positioning a workpiece and can move up and down is arranged on the lower die 2, a positioning hole 31 which is used for positioning the workpiece is arranged on the material positioning plate 3, a fixing plate 10 is fixedly connected to the lower die 2, a plurality of first punches 4 are fixed on the fixing plate 10, each first punch 4 is connected to the material positioning plate 3 in a penetrating manner and can extend into the positioning hole 31, the fixing plate 10 is used for installing the plurality of first punches 4, it is ensured that the plurality of first punches 4 can punch the workpiece in the positioning hole 31, an elastic part 5 is arranged between the material positioning plate 3 and the lower die 2, the elastic part 5 is a nitrogen spring or a compression spring, the elastic part 5 is a plurality of elastic parts, and the plurality of lower dies 5 are circumferentially arranged on the lower die 2.

The lower die 2 is also provided with a punching and material returning structure which can punch a workpiece in the positioning hole 31 and can eject the workpiece in the positioning hole 31, the punching and material returning structure comprises a first material returning block 6, a second punch 7, a compression spring 8 and a plurality of material ejecting rods 9, the first material returning block 6 is connected on the material positioning plate 3 in a penetrating manner and can extend into the positioning hole 31, the second punch 7 penetrates through the first material returning block 6 and can extend into the positioning hole 31, the compression spring 8 is arranged between the lower die 2 and the first material returning block 6, the second punch 7 can directly punch the workpiece in the positioning hole 31 upwards in the process that the upper die 1 is pressed downwards, the compression spring 8 enables the first material returning block 6 to reset after being pressed downwards, the workpiece punched in the positioning hole 31 by the first material returning block 6 can be ejected, the workpiece punched in the positioning hole can be conveniently and quickly taken out, so that the production efficiency is improved, a plurality of ejector beam 9 meets with the lower knockout cylinder of lathe, a plurality of ejector beam 9 wears to connect on lower mould 2, the lower knockout cylinder of lathe can promote a plurality of ejector beam 9, make a plurality of ejector beam 9 promote first material returning block 6 and upwards move and get into in locating hole 31, work piece in locating hole 31 punches a hole and accomplishes the back, will first material returning block 6 upwards push up first material returning block 6 through a plurality of ejector beam 9, make first material returning block 6 can be ejecting the work piece in locating hole 31 fast, the work piece that conveniently punches a hole and accomplish is taken out fast, and production efficiency is improved.

The convex strip 7a is formed on the side part of the second punch 7 in a protruding mode, the convex strip 7a directly achieves machining of a workpiece groove in the process that the second punch 7 punches the workpiece, machining of the groove is not needed, machining procedures are reduced, and production efficiency is improved.

Be fixed with the first guide pillar 21 that a plurality of is circumference and distributes on lower mould 2, every first guide pillar 21 all passes material locating plate 3 and makes material locating plate 3 can reciprocate along first guide pillar 21, all is provided with on every first guide pillar 21 and carries out spacing cushion 13 to material locating plate 3, has guaranteed that material locating plate 3 reciprocates along first guide pillar 21, makes first drift 4 realize the position degree and the plane degree to work piece processing, has improved the machining precision of processing of punching a hole.

The upper die 1 is provided with through holes 1a which are the same in number as the first punches 4 and correspond to the first punches 4 one by one, and a material returning rod 14 which can eject waste materials punched by the first punches 4 penetrates through each through hole 1 a.

Go up mould 1 downside fixedly connected with die 11, through-hole 1a sets up on die 11, upward be provided with the second material returned piece 12 that can reciprocate on the mould 1, second material returned piece 12 is connected on the top cylinder on the lathe, second material returned piece 12 is located the top of a plurality of material returned pole 14, after the work piece in locating hole 31 was punched a hole to first drift 4 of a plurality of, make the waste material that punches a hole get into respectively in the corresponding through-hole 1a in die 11, it is ejecting to remove the waste material that promotes a plurality of material returned poles 14 in with the through-hole 1a that corresponds through second material returned piece 12, avoid the waste material card in die 11, influence the processing of punching a hole next time.

Be equipped with guide post 2a on the lower mould 2, go up the mould 1 and have uide bushing 1b, uide bushing 1b cup joints on guide post 2a, has guaranteed that lower mould 2 and last mould 1 upper and lower guide move, guarantees the machining precision of punching a hole processing.

An upper die 1 and a lower die 2 are fixed on a machine tool, a workpiece is placed in a positioning hole 31 on a material positioning plate 3, the machine tool moves downwards to enable the upper die 1 to move downwards to be in contact with the material positioning plate 3 and then to be pressed to the workpiece, the upper die 1 continues to move downwards to enable the material positioning plate 3 to be pressed downwards, a plurality of first punches 4 and second punches 7 complete punching of the workpiece, punched waste materials respectively enter corresponding through holes 1a, after punching is completed, the machine tool returns to drive the upper die 1 to move upwards, an upper cylinder of the machine tool pushes a second material returning block 12, the second material returning block 12 pushes a material returning rod 14 to eject the waste materials in the corresponding through holes 1a, meanwhile, under the action of an elastic piece 5, the material positioning plate 3 arranged on the lower die 2 returns to the original position, then the material returning rod 9 is pushed by the lower cylinder of the machine tool, the material returning rod 9 upwards enables the first material returning block 6 to eject the workpiece, and multiple punching processing of the workpiece can be directly completed at one time, and the waste can be directly ejected out, so that the workpiece can be punched and processed conveniently, and the production of the next workpiece is facilitated, thereby improving the production efficiency of punching and processing.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A punching die comprises an upper die (1) and a lower die (2), and is characterized in that a material positioning plate (3) which is used for positioning a workpiece and can move up and down is arranged on the lower die (2), a positioning hole (31) which is used for positioning the workpiece is arranged on the material positioning plate (3), a plurality of first punches (4) which can punch the workpiece arranged in the positioning hole (31) are arranged on the lower die (2), an elastic piece (5) is arranged between the material positioning plate (3) and the lower die (2), a punching and material returning structure which can punch the workpiece in the positioning hole (31) and can push out the workpiece in the positioning hole (31) is further arranged on the lower die (2), through holes (1a) which are the same as the first punches (4) in number and correspond to the plurality of first punches (4) one by one are arranged on the upper die (1), a material returning rod (14) capable of ejecting the waste materials punched by the first punch (4) penetrates through each through hole (1 a).

2. The punching die according to claim 1, characterized in that the punching stripper structure comprises a first stripper block (6), a second punch (7) and a compression spring (8), the first stripper block (6) is threaded on the material positioning plate (3) and can extend into the positioning hole (31), the second punch (7) is threaded on the first stripper block (6) and can extend into the positioning hole (31), and the compression spring (8) is arranged between the lower die (2) and the first stripper block (6).

3. The punching die according to claim 2, characterized in that the punching stripper structure further comprises a plurality of ejector rods (9), and the plurality of ejector rods (9) are connected to the lower die (2) in a penetrating manner and can push the first stripper block (6) to move upwards.

4. A punching die according to claim 2 or 3, wherein the second punch (7) is formed with a protruding strip (7a) protruding from the side thereof.

5. A punching die according to claim 2 or 3, characterized in that a fixing plate (10) is fixedly connected to the lower die (2), a plurality of first punches (4) are fixed to the fixing plate (10), and each first punch (4) is inserted into the positioning plate (3) and can extend into the positioning hole (31).

6. A punching die according to claim 1, 2 or 3, characterized in that a female die (11) is fixedly connected to the underside of the upper die (1), the through hole (1a) is arranged on the female die (11), a second stripper block (12) capable of moving up and down is arranged on the upper die (1), and the second stripper block (12) is arranged above the plurality of stripper bars (14).

7. The punching die according to claim 1, 2 or 3, wherein a plurality of first guide columns (21) distributed circumferentially are fixed on the lower die (2), each first guide column (21) penetrates through the material positioning plate (3) to enable the material positioning plate (3) to move up and down along the first guide column (21), and a cushion block (13) for limiting the material positioning plate (3) is arranged on each first guide column (21).

8. A punching die according to claim 1, 2 or 3, characterized in that the elastic member (5) is a nitrogen spring or a compression spring, the number of elastic members (5) is several, and several elastic members (5) are circumferentially arranged on the lower die (2).

9. The punching die according to claim 1, 2 or 3, wherein the lower die (2) is provided with guide posts (2a), the upper die (1) is provided with guide sleeves (1b), and the guide sleeves (1b) are sleeved on the guide posts (2 a).