CN217665720U

CN217665720U - Punching die for lead frame

Info

Publication number: CN217665720U
Application number: CN202221695613.8U
Authority: CN
Inventors: 王国俊; 冯军; 叶仙军; 张朋; 刘亨; 毛利平
Original assignee: Ningbo Aishengda Precision Manufacturing Technology Co ltd
Current assignee: Ningbo Aishengda Precision Manufacturing Technology Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-10-28
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a die-cut mould of lead frame, the on-line screen storage device comprises a base, the top four corners fixed mounting of base has the stand, four the top horizontal installation of stand has the roof, the top centre of roof inlays and is equipped with the cylinder, the bottom output horizontal installation of cylinder has the knife rest, the bottom of knife rest is provided with cuts off the die-cutting tool, cut off the first guide post of the both ends symmetry fixedly connected with at die-cutting tool top, the both ends symmetry of knife rest bottom is provided with the clamp plate, both ends symmetry fixedly connected with second guide post around the clamp plate, the top of second guide post is provided with stop cap, the outside cover of second guide post is equipped with the second elastic component. This die-cut mould of lead frame through mutually supporting of clamp plate, second guide post, the second elastic component that sets up can compress tightly the work piece before cutting off the die cutter and carry out die-cut, then die-cut, has increased the stability of work piece.

Description

Punching die for lead frame

Technical Field

The utility model relates to a die-cut mould field of lead frame, in particular to die-cut mould of lead frame.

Background

The lead frame is used as a chip carrier of an integrated circuit, is a key structural member for realizing the electrical connection between a leading-out end of an internal circuit of a chip and an external lead by means of bonding materials (gold wires, aluminum wires and copper wires) to form an electrical loop, plays a role of a bridge connected with an external wire, needs to use the lead frame in most semiconductor integrated blocks, and is an important basic material in the electronic information industry.

Semiconductor lead frames typically require a cut-off mold during processing.

In chinese utility model patent application no: CN202021120745.9 discloses a cut-off forming die for semiconductor lead frame, the device includes the processing platform and cuts off forming die, cut off forming die and be located the processing bench side, processing bench side fixed surface is connected with first drive belt, second drive belt and cutting off platform, and the cutting off platform is located first drive belt and second drive belt, cut off forming die including fixed guide pillar, last cutting off frame, fixed plate and cutting off knife rest, cut off forming die and link to each other with the processing platform through fixed guide pillar, go up the cutting off frame and be located fixed guide pillar top, this utility model relates to a forming die technical field. This a cut off forming die for semiconductor lead frame can automatic feeding and unloading, promotes semiconductor lead frame and cuts off shaping efficiency, can fix the both ends of cutting off the semiconductor lead frame of in-process simultaneously, prevents that semiconductor lead frame from taking place the problem of deformation when cutting off, promotes the quality that semiconductor lead frame cut off. The device only relies on spacing splint to fix the work piece, and fixed effect is relatively poor, and stability can not be ensured, and the fragment that the device was cut away is not convenient for concentrate the collection simultaneously.

Therefore, it is necessary to provide a lead frame punching die to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a die-cut mould of lead frame can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a lead frame punching die comprises a base, wherein stand columns are fixedly mounted at four corners of the top of the base, top plates are horizontally mounted at the tops of the four stand columns, an air cylinder is embedded in the center of the top of each top plate, a knife rest is horizontally mounted at the output end of the bottom of the air cylinder, a cutting punching knife is arranged at the bottom of the knife rest, first guide posts are symmetrically and fixedly connected to two ends of the top of the cutting punching knife, pressing plates are symmetrically arranged at two ends of the bottom of the knife rest, second guide posts are symmetrically and fixedly connected to the front end and the rear end of each pressing plate, limiting caps are arranged at the tops of the second guide posts, and second elastic pieces are sleeved outside the second guide posts;

the positive fixed mounting in top of base has the cutting off platform, both ends symmetry fixedly connected with curb plate about the cutting off platform top, two the relative one side front end of curb plate is rotated through the left side and is connected with two-way lead screw, right-hand member the right side front end of curb plate is provided with the motor, two the relative one side symmetry of curb plate is provided with the movable plate, two the relative one side symmetry of movable plate is provided with splint, both ends symmetry is provided with first elastic component around splint and before the movable plate, first drift hole has been seted up at the top of cutting off platform, two the relative one side rear end fixed mounting of curb plate has the guide bar.

Preferably, a placing groove is formed in the middle of the front end of the base, a storage drawer is inserted into an inner cavity of the placing groove, a second punch hole is formed in the top of the base and corresponds to the first punch hole, the second punch hole is communicated with the inner cavity of the storage drawer, and the first punch hole corresponds to the cutting-off punch one to one.

Preferably, the upper end of the second guide post extends to the position above the tool rest, the second guide post is connected with the tool rest in a sliding mode, and the second elastic piece is located between the pressure plate and the tool rest.

Preferably, the upper end of the first guide post extends to the upper part of the top plate, and the first guide post is connected with the top plate in a sliding mode.

Preferably, the right end of the bidirectional screw rod extends to the right side of the right end side plate to be connected with the output end of the motor, the front ends of the two moving plates are respectively in threaded connection with the left end and the right end of the bidirectional screw rod, and the moving plates are attached to the top of the cutting table and are in sliding connection with the top of the cutting table.

Preferably, the bottom of splint and the top laminating and the sliding connection of cutting off table, two the rear end of movable plate overlaps respectively and locates the guide bar outside the both ends of controlling, movable plate and guide bar sliding connection.

Advantageous effects

Compared with the prior art, the utility model provides a die-cut mould of lead frame possesses following beneficial effect:

1. this die-cut mould of lead frame through mutually supporting of clamp plate, second guide post, the second elastic component that sets up can compress tightly the work piece before cutting off the die-cutter and carry out die-cut, then die-cut, has increased the stability of work piece, and first guide post is convenient for lead the knife rest, and spacing cap is convenient for carry on spacingly to the second guide post.

2. This die-cut mould of lead frame through mutually supporting of the two-way lead screw, motor, movable plate, splint, the first elastic component that set up can conveniently carry out the fixed clamp tight to the both sides of work piece, has further increased the steadiness, is convenient for collect the fragment under die-cut through the drawer of accomodating that sets up.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the cutting table of the present invention;

FIG. 3 is an enlarged view of the point A of FIG. 1;

fig. 4 is a schematic structural diagram of the base of the present invention.

In the figure: 1. a base; 2. a column; 3. a top plate; 4. a cylinder; 5. a tool holder; 6. cutting off the punching cutter; 7. A first guide post; 8. a cutting-off table; 9. a storage drawer; 10. a first punch hole; 11. a side plate; 12. a motor; 13. a bidirectional screw rod; 14. moving the plate; 15. a splint; 16. a first elastic member; 17. a guide bar; 18. pressing a plate; 19. a second guide post; 20. a limiting cap; 21. a second elastic member; 22. placing the mixture into a groove; 23. a second punch hole.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-4, a lead frame punching die comprises a base 1, four corners of the top of the base 1 are fixedly provided with upright posts 2, the tops of the four upright posts 2 are horizontally provided with a top plate 3, a cylinder 4 is embedded in the center of the top plate 3, the bottom output end of the cylinder 4 is horizontally provided with a knife rest 5, the bottom of the knife rest 5 is provided with a cutting stamping knife 6, two ends of the top of the cutting stamping knife 6 are symmetrically and fixedly connected with first guide posts 7, the first guide posts 7 are convenient for guiding the knife rest 5, the upper end of the first guide posts 7 extends to the upper part of the top plate 3, the first guide posts 7 are in sliding connection with the top plate 3, two ends of the bottom of the knife rest 5 are symmetrically provided with pressing plates 18, the front and rear ends of the pressing plates 18 are symmetrically and fixedly connected with second guide posts 19, the top of the second guide posts 19 are provided with limiting caps 20, the limiting caps 20 are convenient for limiting the second guide posts 19, a second elastic piece 21 is sleeved outside a second guide post 19, the second elastic piece 21 is positioned between a press plate 18 and a tool rest 5, the workpiece can be pressed before the cutting of a cutting punch 6 through the mutual matching of the press plate 18, the second guide post 19 and the second elastic piece 21, then the workpiece is cut, the stability of the workpiece is increased, a cutting table 8 is fixedly arranged in the center of the top of a base 1, side plates 11 are symmetrically and fixedly connected to the left end and the right end of the top of the cutting table 8, a bidirectional screw 13 is rotatably connected to the front ends of the opposite sides of the two side plates 11 through the left side, the right end of the bidirectional screw 13 extends to the right end of the right side plate 11 and is connected with the output end of a motor 12, a motor 12 is arranged at the front end of the right side plate 11, a movable plate 14 is symmetrically arranged on the opposite side of the two side plates 11, the front ends of the two side plates 14 are respectively in threaded connection with the left end and the right end of the bidirectional screw 13, the cutting device comprises a movable plate 14, a cutting table 8, clamping plates 15, first elastic pieces 16, a first punch hole 10, a guide rod 13, a motor 12, the movable plate 14, the clamping plates 15 and the first elastic pieces 16, wherein the movable plate 14 is in sliding connection with the top of the cutting table 8, the clamping plates 15 are symmetrically arranged on one side opposite to the movable plate 14, the bottoms of the clamping plates 15 are in sliding connection with the top of the cutting table 8, the first elastic pieces 16 are symmetrically arranged at the front end and the rear end of the clamping plates 15 and the front end and the rear end of the movable plate 14 in front of the cutting table, the guide rods 17 are fixedly arranged at the rear end of one side opposite to the two side plates 11 through mutual matching of the two-way screw rods 13, the motor 12, the movable plate 14, the clamping plates 15 and the first elastic pieces 16, stability is further improved, a containing drawer 9 is inserted into the inner cavity of the containing drawer 22, punched fragments are convenient to collect through the containing drawer 9, a second punch hole 23 is arranged at the top of the base 1, the second punch hole 23 corresponds to the first punch hole 10, and the second punch hole 23 is communicated with the first punch hole 6.

It should be noted that the utility model is a lead frame punching die, when in use, the pressing plate 18, the second guide post 19 and the second elastic piece 21 are matched with each other to compress the workpiece before the cutting punch 6 punches, then punching is carried out, the stability of the workpiece is increased, the first guide post 7 is convenient for guiding the knife rest 5, the limit cap 20 is convenient for limiting the second guide post 19, the mutual matching of the two-way screw 13, the motor 12, the movable plate 14, the clamp plate 15 and the first elastic piece 16 is convenient for fixing and clamping two sides of the workpiece, the stability is further increased, the collection of the punched fragments is convenient through the arranged storage drawer 9, and the utility model is specific, the workpiece is placed at the top of the cutting table 8, the motor 12 is started to drive the bidirectional screw rod 13 to rotate, the bidirectional screw rod 13 drives the two movable plates 14 to move close to each other, the guide rod 17 guides the workpiece, then the two clamping plates 15 clamp the two sides of the workpiece tightly, the first elastic piece 16 contracts and is stopped after being stabilized, then the cylinder 4 drives the tool rest 5 to move downwards, the pressing plate 18 is firstly contacted with the two sides of the top of the workpiece, then the cutting punch 6 continues to move downwards, the pressing plate 18 is matched with the second guide column 19 to compress the second elastic piece 21, the cutting punch 6 is matched with the first punch hole 10 and the second punch hole 23 to complete punching, the block can fall into an inner cavity of the storage drawer 9 to be collected, the cutting punch 6 resets upwards after the completion, and the motor 12 rotates reversely to take down the workpiece.

The foregoing shows and describes the basic principles and principal features of the invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a die-cut mould of lead frame, includes base (1), its characterized in that: the cutting machine is characterized in that stand columns (2) are fixedly mounted at four corners of the top of the base (1), top plates (3) are horizontally mounted at the tops of the four stand columns (2), an air cylinder (4) is embedded in the center of the top of each top plate (3), a knife rest (5) is horizontally mounted at the output end of the bottom of each air cylinder (4), a cutting stamping knife (6) is arranged at the bottom of each knife rest (5), first guide columns (7) are symmetrically and fixedly connected to two ends of the top of each cutting stamping knife (6), pressing plates (18) are symmetrically and fixedly arranged at two ends of the bottom of each knife rest (5), second guide columns (19) are symmetrically and fixedly connected to the front ends and the rear ends of each pressing plate (18), limiting caps (20) are arranged at the tops of the second guide columns (19), and second elastic pieces (21) are sleeved outside the second guide columns (19);

the top of base (1) is positive fixed mounting has cutting off platform (8), cutting off platform (8) top about both ends symmetry fixedly connected with curb plate (11), two the relative one side front end of curb plate (11) is rotated through the left side and is connected with two-way lead screw (13), right-hand member the right side front end of curb plate (11) is provided with motor (12), two the relative one side symmetry of curb plate (11) is provided with movable plate (14), two the relative one side symmetry of movable plate (14) is provided with splint (15), splint (15) and movable plate (14) are preceding around both ends symmetry be provided with first elastic component (16), first punch hole (10) have been seted up at the top of cutting off platform (8), two the relative one side rear end fixed mounting of curb plate (11) has guide bar (17).

2. The lead frame blanking die of claim 1, wherein: the utility model discloses a drawer punching machine, including base (1), set up in the front end middle part of base (1) and put into groove (22), the inner chamber of putting into groove (22) is inserted and is equipped with and accomodate drawer (9), second drift hole (23) have been seted up at the top of base (1), second drift hole (23) correspond with first drift hole (10) to second drift hole (23) and the inner chamber intercommunication of accomodating drawer (9), first drift hole (10) with cut off die cutter (6) one-to-one.

3. The lead frame blanking die of claim 1, wherein: the upper end of the second guide column (19) extends to the position above the tool rest (5) of the tool rest (5), the second guide column (19) is connected with the tool rest (5) in a sliding mode, and the second elastic piece (21) is located between the pressing plate (18) and the tool rest (5).

4. The lead frame blanking die of claim 1, wherein: the upper end of the first guide post (7) extends to the upper part of the top plate (3), and the first guide post (7) is connected with the top plate (3) in a sliding mode.

5. The lead frame blanking die of claim 1, wherein: the right end of the bidirectional screw rod (13) extends to the right side of the right end side plate (11) and is connected with the output end of the motor (12), the front ends of the two moving plates (14) are respectively in threaded connection with the left end and the right end of the bidirectional screw rod (13), and the moving plates (14) are attached to the top of the cutting table (8) and are in sliding connection.

6. The lead frame blanking die of claim 1, wherein: the bottom of splint (15) and the top laminating and sliding connection of cutting off platform (8), two the rear end of movable plate (14) overlaps respectively and locates the left and right sides both ends outside guide bar (17), movable plate (14) and guide bar (17) sliding connection.