CN216760138U - Punching die for halogen-free plate - Google Patents
Punching die for halogen-free plate Download PDFInfo
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- CN216760138U CN216760138U CN202220289856.5U CN202220289856U CN216760138U CN 216760138 U CN216760138 U CN 216760138U CN 202220289856 U CN202220289856 U CN 202220289856U CN 216760138 U CN216760138 U CN 216760138U
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Abstract
The utility model provides a punching die for halogen-free plates, which comprises an upper die assembly and a lower die assembly, wherein the upper die assembly comprises a first die and a first punch; the upper die assembly comprises an upper cover plate, a cover needle plate, a pressing needle plate and a fixing plate which are connected from top to bottom; a plurality of punching needles are arranged in the presser plate; an upper mold core is arranged in the fixed plate; the punching part of each punching needle penetrates through the upper mold core and extends out of the lower end surface of the upper mold core; a plurality of first bulges are arranged on the lower end surface of the upper mold core; the lower die assembly comprises a first support frame and a second support frame; an inner supporting plate is arranged above the first supporting frame and the second supporting frame, and a lower mold core is arranged on the inner supporting plate; a plurality of punching grooves are formed in the lower die core corresponding to the positions of the punching needles; and a plurality of second bulges corresponding to the first bulges are arranged on the upper end surface of the lower mold core. The utility model can improve the punching efficiency and the punching precision of the plate, can protect the plate in the punching process and can not scratch the plate.
Description
Technical Field
The utility model relates to the technical field of punch forming equipment, in particular to a punching die for halogen-free plates.
Background
Along with the development of science and technology, the progress of artificial intelligence and AI science and technology, more and more electronic product has increased visual design when the design, and big to aerospace, little to artifical wearing equipment, the application is more and more extensive. The visual design is used for the camera module, and the carrier PCB motherboard of the camera module is a CMOS product.
Most of CMOS products are thin, lines are dense, the size is small, the number of relative grooves is large before cutting, the shapes are regular, however, in order to improve the performance of the CMOS products, most of the CMOS products are made of halogen-free plates, the halogen-free plates are formed by powder pressing, and are easy to embrittle, and most of the traditional cutting modes are laser cutting or mechanical cutting. The traditional mechanical cutting mode has long time, low efficiency and poor cutting relative precision, and the size precision is usually within +/-0.1 mm; the laser cutting method has long time, low efficiency, serious carbon powder on a cutting path, difficult personnel processing and higher relative cost.
In addition, the existing die for cutting is lack of a structure for protecting the plate, and the plate is easily scratched in the cutting process, so that the product quality is damaged; therefore, it is necessary to develop a punching mold to improve the punching accuracy of the halogen-free sheet material and ensure the product quality.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the punching die for the halogen-free plate, which can improve the punching efficiency and the punching precision of the halogen-free plate, can protect the plate in the punching process and cannot scratch the plate.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a punching die for halogen-free plates comprises an upper die assembly and a lower die assembly; the upper die assembly comprises an upper cover plate, a cover needle plate, a pressing needle plate and a fixing plate which are connected from top to bottom; a plurality of punching needles are arranged in the presser plate; an upper mold core is arranged in the fixed plate; the punching part of each punching needle penetrates through the upper mold core and extends out of the lower end surface of the upper mold core; a plurality of first bulges are arranged on the lower end surface of the upper mold core;
the lower die assembly comprises a first support frame and a second support frame; an inner supporting plate is arranged above the first supporting frame and the second supporting frame, and a lower mold core is arranged on the inner supporting plate; a plurality of punching grooves are formed in the lower die core corresponding to the positions of the punching needles;
and a plurality of second bulges corresponding to the first bulges are arranged on the upper end surface of the lower mold core.
Preferably, a plurality of punch pin through holes are formed in the upper die core, and each punch pin penetrates through the punch pin through hole, extends out of the lower end face of the upper die core and extends into the corresponding punch groove.
Preferably, a groove is formed in the punching part of each punching needle; the shape of the groove comprises a dovetail shape.
Preferably, a plurality of punching grooves are internally provided with fool-proof pins.
Preferably, blanking holes penetrating through the inner supporting plate are formed in the bottoms of the punching grooves.
Preferably, guide posts are further arranged at two ends of the lower mold core; and guide post guide grooves are formed in the upper die core corresponding to the guide posts.
Preferably, the first protrusion is integrally formed with the upper mold core; the second protrusion and the lower die core are integrally formed.
Preferably, the first support frame is connected with the inner supporting plate through a bolt.
Preferably, the width of the punching groove is more than 0.7 mm.
Compared with the prior art, the utility model has the beneficial effects that: the halogen-free plate with the plate thickness less than 0.5mm can be punched and cut, and in the cutting process, the height difference formed by the contact of the first protrusion and the second protrusion becomes a safe space of the plate, so that the surface of the plate can be protected from being scratched in the punching process, and the integrity of a printed circuit on the plate can be ensured; according to the utility model, the single sheet only needs to be punched once, so that the forming and cutting time is greatly reduced, the production efficiency is improved, and the problems of carbon powder accumulation and difficult personnel handling caused by laser cutting are solved; the utility model reduces the cost and has higher die cutting precision.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic structural view of the punch pin of the present invention.
In the figure, 1-upper die assembly, 11-upper cover plate, 12-cover pin plate, 13-presser plate, 14-fixing plate, 15-upper die core, 16-first protrusion, 2-lower die assembly, 21-first support frame, 22-second support frame, 23-inner supporting plate, 24-lower die core, 25-second protrusion, 3-punching pin, 31-punching part, 32-groove, 4-punching groove, 41-blanking hole, 5-guide pillar, 6-guide pillar guide groove, and 7-bolt.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2: a punching die for halogen-free plates comprises an upper die assembly 1 and a lower die assembly 2; the upper die assembly 1 comprises an upper cover plate 11, a cover needle plate 12, a pressing needle plate 13 and a fixing plate 14 which are connected from top to bottom; a plurality of punching needles 3 are arranged in the presser plate 13; an upper mold core 15 is arranged in the fixed plate 14; the punching part 31 of each punching needle 3 extends out of the lower end surface of the upper mold core 15 through the upper mold core 15; a plurality of first bulges 16 are arranged on the lower end surface of the upper mold core 15;
the lower die assembly 2 comprises a first support frame 21 and a second support frame 22; an inner supporting plate 23 is arranged above the first supporting frame 21 and the second supporting frame 22, and a lower mold core 24 is arranged on the inner supporting plate 23; a plurality of punching grooves 4 are formed in the lower mold core 24 corresponding to the plurality of punching needles 3; the upper end surface of the lower mold core 24 is provided with a plurality of second bulges 25 corresponding to the first bulges 16.
According to the utility model, a plurality of first bulges 16 are arranged on the lower end surface of an upper mold core 15, a plurality of second bulges 25 corresponding to the first bulges 16 are arranged on the upper end surface of a lower mold core 24, when an upper mold component 1 is pressed down and a punching needle 3 extrudes and punches in a punching groove 4, the convex ends of the first bulges 16 positioned at two sides of the punching needle 3 are contacted with the convex ends of the second bulges 25 positioned at two sides of the punching groove 4, and the bulges have height difference with the end surface of the mold core, so that when the first bulges 16 are contacted with the second bulges 25, a certain height difference exists between the lower end surface of the upper mold core 15 and the upper end surface of the lower mold core 24; the height difference formed by the contact of the first protrusion 16 and the second protrusion 25 becomes a safe space of the plate, so that the surface of the plate can be protected from being scratched in the punching process, and the integrity of a printed circuit on the plate can be ensured.
Further, in the specific implementation process, the first protrusion 16 is integrally formed with the upper mold core 15; the second protrusion 25 is integrally formed with the lower mold core 24; the integrated into one piece can make the mold core structure more durable firm, plays more effectual safeguard effect to panel.
Furthermore, a plurality of punching pin through holes are formed in the upper mold core 15, and each punching pin 3 penetrates through the punching pin through hole to extend out of the lower end face of the upper mold core 15 and extend into the corresponding punching groove 4.
More specifically, two ends of the lower mold core 24 are also provided with guide posts 5; and guide post guide grooves 6 are arranged in the upper mold core 15 corresponding to the guide posts 5.
When the upper die assembly 1 is pressed downwards, the guide post 5 is combined with the guide post guide groove 6, the pressing plate 13 is extruded by utilizing the downward pressure of the punching die, the pressing plate 13 is driven to press downwards, the punching pin 3 is extruded from the upper die core 15 through the punching pin through hole and then is extruded with the punching die groove 4 corresponding to the punching pin in the lower die core 24, and the punching is finished; in order to ensure the punching precision of the punching needle 3, the punching needle 3 adopts powder high-speed steel material. According to the utility model, the single sheet can be taken out after one-time punching is finished, no carbon powder is generated in the cutting path, and the die cutting precision is high.
Further, a groove 32 is formed in the punching part 31 of each punching needle 3; the shape of the recess 32 includes a dovetail shape.
In the specific implementation process, the die cutting part 31 of the punching needle 3 is provided with a dovetail-shaped groove, so that the contact area of the punching needle 3 and the plate can be reduced, and the edge of the punched plate is smoother similar to the knife edge design.
Furthermore, foolproof pins are arranged in the punching grooves 4; set up in towards type groove 4 and prevent slow-witted pin and can guarantee that the mould dashes the direction and be the positive direction towards the type, prevent to go up anti-, avoid causing towards anti-condemned problem.
Furthermore, blanking holes 41 penetrating through the inner supporting plate 23 are formed at the bottoms of the plurality of punching type grooves 4.
Owing to can produce the crushed aggregates at die-cut in-process, set up blanking hole 41, the crushed aggregates discharges through blanking hole 41 and goes, can prevent that the crushed aggregates from blockking up and dash type groove 4 to guarantee that die-cut work goes on smoothly, at concrete implementation in-process, can also set up blanking clearance collecting vat in blanking hole 41's position.
Further, the first support frame 21 is connected with the inner support plate 23 through a bolt 7. The bolts are fixed to facilitate disassembly, the second support frame 22 and the inner support plate 23 may be connected by bolts, and may be welded, and the specific connection mode is not limited.
The utility model also provides a punching method of the halogen-free plate, which comprises the following steps:
s1: selecting a halogen-free plate with the plate thickness of less than 0.5 mm;
s2: selecting a punching die of a halogen-free plate, and filling and locking the die; the punching die comprises an upper die assembly 1 and a lower die assembly 2; the upper die assembly 1 comprises an upper cover plate 11, a cover needle plate 12, a pressing needle plate 13 and a fixing plate 14 which are connected from top to bottom; a plurality of punching needles 3 are arranged in the presser plate 13; an upper mold core 15 is arranged in the fixed plate 14;
the lower die assembly 2 comprises a first support frame 21 and a second support frame 22; an inner supporting plate 23 is arranged above the first supporting frame 21 and the second supporting frame 22, and a lower mold core 24 is arranged on the inner supporting plate 23;
a plurality of punching needle through holes are formed in the upper mold core 15, and each punching needle 3 penetrates through the punching needle through hole, extends out of the lower end face of the upper mold core 15 and extends into the corresponding punching groove 4;
guide posts 5 are also arranged at the two ends of the lower mold core 24; a guide post guide groove 6 is arranged in the upper mold core 15 corresponding to the guide post 5;
s3: fixing a punching die on a punching machine, and using a punching test plate to test punching to confirm whether the phenomenon of non-punching is existed or not; in the process of punching test, the lower punching stroke is controlled between 317 and 318 mm;
s4: placing the selected halogen-free PCB plate on a lower die assembly 2, pressing down an upper die assembly 1, combining a guide post 5 with a guide post guide groove 6, extruding a pressing pin plate 13 by utilizing the downward pressure of a punching die, driving the pressing pin plate 13 to press down, extruding a punching pin 3 from an upper die core 15, and extruding the punching pin with a corresponding punching die groove 4 in a lower die core 24 to complete punching; the punch press drives the upper die assembly 1 to ascend in the backward direction, and meanwhile, a stripping mechanism connected with the upper die assembly 1 finishes stripping, namely, a plate punching cycle is finished;
s5: and after punching, taking out the punched plate, and checking the appearance and the size to obtain a finished product with the cracking of the plate edge not more than 0.15mm, no damage on the surface of the base material and the dimensional precision kept within +/-0.05 mm.
Using a punching test plate to test punching, and determining whether the phenomenon of punching is not thorough or not; in the punching test process, if the lower punching stroke is higher than 318mm, the punching needle is damaged, and if the lower punching stroke is lower than 317mm, the punching force of the punching needle is insufficient, so that the punching cannot be finished.
In the specific implementation process, due to the limitation of the minimum punching needle, the width of the punching groove 4 is more than 0.7 mm.
After punching, the punched plate is taken out, the appearance and the size are checked, and the plate punched by the punching die has the following advantages:
(1) cracking the plate edges to be not more than 0.15 mm;
(2) the surface of the base material is not damaged;
(3) the size precision is high and is kept within +/-0.05mm, and compared with laser cutting or mechanical cutting, the size precision is effectively improved.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (9)
1. A punching die for halogen-free plates is characterized in that: comprises an upper die component (1) and a lower die component (2); the upper die assembly (1) comprises an upper cover plate (11), a cover needle plate (12), a pressing needle plate (13) and a fixing plate (14) which are connected from top to bottom; a plurality of punching needles (3) are arranged in the pressing plate (13); an upper mold core (15) is arranged in the fixed plate (14); the punching part (31) of each punching needle (3) penetrates through the upper mold core (15) and extends out of the lower end surface of the upper mold core (15); a plurality of first bulges (16) are arranged on the lower end surface of the upper mold core (15);
the lower die assembly (2) comprises a first support frame (21) and a second support frame (22); an inner supporting plate (23) is arranged above the first supporting frame (21) and the second supporting frame (22), and a lower mold core (24) is arranged on the inner supporting plate (23); a plurality of punching grooves (4) are formed in the lower mold core (24) at positions corresponding to the punching needles (3);
the upper end surface of the lower mold core (24) is provided with a plurality of second bulges (25) corresponding to the first bulges (16).
2. The halogen-free sheet blanking die set forth in claim 1, wherein: a plurality of punching needle through holes are formed in the upper mold core (15), and each punching needle (3) penetrates through the punching needle through hole, extends out of the lower end face of the upper mold core (15) and extends into the corresponding punching groove (4).
3. The halogen-free sheet blanking die of claim 2, wherein: a groove (32) is formed in the punching part (31) of each punching needle (3); the shape of the recess (32) comprises a dovetail shape.
4. The halogen-free sheet blanking die of claim 2, wherein: and fool-proof pins are arranged in the punching grooves (4).
5. The halogen-free sheet blanking die of claim 2, wherein: blanking holes (41) penetrating through the inner supporting plate (23) are formed in the bottoms of the punching grooves (4).
6. The halogen-free sheet blanking die set forth in claim 1, wherein: guide posts (5) are also arranged at two ends of the lower mold core (24); and a guide post guide groove (6) is arranged in the upper mold core (15) corresponding to the guide post (5).
7. The halogen-free sheet blanking die of claim 1, wherein: the first bulge (16) and the upper mold core (15) are integrally formed; the second protrusion (25) and the lower mold core (24) are integrally formed.
8. The halogen-free sheet blanking die of claim 1, wherein: the first supporting frame (21) is connected with the inner supporting plate (23) through a bolt (7).
9. The halogen-free sheet blanking die of claim 1, wherein: the width of the punching groove (4) is more than 0.7 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220289856.5U CN216760138U (en) | 2022-02-11 | 2022-02-11 | Punching die for halogen-free plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220289856.5U CN216760138U (en) | 2022-02-11 | 2022-02-11 | Punching die for halogen-free plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216760138U true CN216760138U (en) | 2022-06-17 |
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ID=81956320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220289856.5U Active CN216760138U (en) | 2022-02-11 | 2022-02-11 | Punching die for halogen-free plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216760138U (en) |
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2022
- 2022-02-11 CN CN202220289856.5U patent/CN216760138U/en active Active
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