CN218614517U - Etching knife mould for fast assembling and disassembling flexible circuit board - Google Patents
Etching knife mould for fast assembling and disassembling flexible circuit board Download PDFInfo
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- CN218614517U CN218614517U CN202223134742.2U CN202223134742U CN218614517U CN 218614517 U CN218614517 U CN 218614517U CN 202223134742 U CN202223134742 U CN 202223134742U CN 218614517 U CN218614517 U CN 218614517U
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Abstract
The utility model discloses an etching knife mould of fast assembly split for flexible circuit board includes: an aluminum plate having a plurality of sequentially adjoining regions, each region having a plurality of first through holes dispersedly arranged in the region; the number of the cutting die steel plates is equal to that of the areas, cutting lines are arranged on one side, back to the aluminum plate, of the cutting die steel plates, the cutting die steel plates correspond to the areas one by one and are fixed in the corresponding areas, and each cutting die steel plate is provided with countersunk through holes corresponding to the first through holes in the corresponding area one by one and is arranged on one side, back to the aluminum plate, of each cutting die steel plate; and a number of pins equal to the number of the first through holes or the countersunk head through holes, each pin being in interference fit in the countersunk head through holes and the first through holes, the pin having a head disposed within the countersunk head. Compare in current etching cutting die, the utility model discloses reopen the cutting die steel sheet of small-size, reduced the die sinking cost and saved the die sinking time.
Description
Technical Field
The utility model relates to an electronic material's cross cutting field, in particular to etching sword mould of fast assembly split for flexible circuit board.
Background
In the process of processing the flexible circuit board, a cutting die is often needed to perform die cutting processing on adhesive tapes such as double-sided adhesive tapes. Due to the size limitations of electronic devices such as mobile phones, computers, IPADs, in-vehicle electronic devices, etc., their flexible circuit boards are relatively small in size. As a component of the flexible circuit board, the adhesive paper product also has a characteristic of small size. Therefore, in order to improve the processing efficiency, a plurality of cutting lines for molding the shape of the offset paper product are arranged on the cutting die.
The adhesive paper products of the flexible circuit board are usually die-cut by an etching knife die. The etching knife mold is formed by applying a film to be attached and exposed with a steel plate, then corroding redundant parts with a corroding machine after developing and reinforcing, and finally processing a knife edge by using an imported CNC (computerized numerical control) carving machine to form a knife edge and then carrying out surface treatment. After the typesetting design of the cutting die is finished, the cutting lines of a plurality of gummed paper products are formed on a whole steel plate by utilizing an etching method according to the typesetting design. Because the blade of the etching cutting die cannot be repaired again, when the blade line of the etching cutting die is damaged, such as the blade is jumped or the blade becomes blunt, the whole die is required to be opened again, and the cost and the time for opening the die are high.
SUMMERY OF THE UTILITY MODEL
The inventors have found that, over the life of an etched cutting die, if bouncing damage occurs, it typically occurs at individual lines; after a time of use of an etching blade die for cutting a flexible circuit board, abrasion defects first occur in a local area which is difficult to predict. In view of this, in order to solve the defects that the cost of re-opening the whole mold is high and the time is long after the existing etching knife mold is damaged, the present disclosure provides a fast assembling and disassembling etching knife mold for a flexible circuit board.
The utility model discloses an etching knife mould of fast assembly split for flexible circuit board includes: an aluminum plate having a plurality of sequentially adjoining regions, each region having a plurality of first through holes dispersedly arranged in the region; the number of the cutting die steel plates is equal to that of the areas, cutting lines are arranged on one side, back to the aluminum plate, of the cutting die steel plates, the cutting die steel plates correspond to the areas one by one and are fixed in the corresponding areas, and each cutting die steel plate is provided with countersunk through holes corresponding to the first through holes in the corresponding area one by one and is arranged on one side, back to the aluminum plate, of each cutting die steel plate; and a number of pins equal to the number of the first through holes or the countersunk head through holes, each pin being in interference fit in the countersunk head through holes and the first through holes, the pin having a head disposed within the countersunk head.
In some embodiments, a pair of corners of each region is respectively provided with a first through hole.
In some embodiments, a plurality of sequentially adjacent regions are sequentially arranged along a first direction, each region having 2 to 3 rows of first through-hole groups arranged along the first direction, each row of the first through-hole groups including 3 first through-holes arranged along a second direction perpendicular to the first direction.
In some embodiments, in each row of the first through hole groups, one of the first through holes is equidistant from both ends of the aluminum plate in the first direction, and the other two first through holes are symmetrically disposed on both sides of the first through hole respectively.
In some embodiments, the distance between the first through holes at two ends of the first through hole group is different from the distance between the first through holes at two ends of the adjacent first through hole group.
In some embodiments, the outer wall of the pin is coated with an adhesive.
Unlike the existing etching cutting die in which all the cutting lines are formed on a single steel plate, the die of the present embodiment is formed by splicing a plurality of small-sized cutting die steel plates, each of which has a cutting line. And when the cutting line on a certain cutting die steel plate is damaged, a cutting die steel plate is manufactured again, and the damaged cutting die steel plate is replaced. Compared with the existing etching cutting die, the embodiment reopens the small-size cutting die steel plate, so that the die opening cost is reduced, and the die opening time is saved.
In order not to increase the weight of the die obviously, the plate for fixing the cutting die steel plate is made of aluminum with relatively low density. The aluminum plate is connected with the cutting die steel plate through a pin, and the pin is in interference fit with the countersunk head through hole and the first through hole. Knocking the pin from one side of the cutting die steel plate to enable the pin to extrude the walls of the countersunk head through hole and the first through hole until the head of the pin completely enters the countersunk head so as to assemble the cutting die steel plate on the aluminum plate. Knocking the pin from the back of the aluminum plate to separate the pin from the first through hole so as to detach the cutting die steel plate from the aluminum plate. The cutting die steel plate is fixed on the aluminum plate in a pin connection mode, and besides the advantages of convenience in assembly and disassembly, the pin is matched with the countersunk head through hole and the first through hole in a gapless mode, so that the movement of the cutting die steel plate is limited, and the position of the cutting die steel plate cannot deviate during punching.
Drawings
FIG. 1 is a schematic view of the front side of an aluminum plate of an etching knife mold for fast assembling and disassembling a flexible printed circuit board according to an embodiment of the present invention
Fig. 2 is a schematic front view of an etching blade mold for fast assembling and disassembling a flexible circuit board according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a cutting die steel plate of an etching cutting die for fast assembling and disassembling a flexible circuit board according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of the flexible circuit board according to an embodiment of the present invention, in which the aluminum plate and the cutting die steel plate are connected by the pin of the fast assembling and disassembling etching cutting die.
Description of the symbols:
the aluminum plate 1, the area 2, the first through hole 3, the die steel plate 4, the cutter line 5, the countersunk through hole 6, the pin 7, the countersunk head 8, the head 9, the first direction 10, the first through hole group 11 and the second direction 12
Detailed Description
In the service life of the etching cutting die, the cutting die can generate knife jumping, and the cutting die can not generate knife jumping defects. Knife bounce damage, if it occurs, typically occurs at individual product lines. After a certain period of time of use, the etching blade die for cutting the flexible circuit board is worn out first in the local area which is difficult to predict. The user can find out whether the knife line is worn and the position of the worn knife line in time by detecting the product quality, such as whether the edge has burrs. The cutter point of the cutter die can not be repaired again at any moment, and if the whole die is reopened due to damage of the cutter line in the local area, the die opening cost is high, the die opening time is long, and the production progress is influenced. In view of the above, the present disclosure provides a fast assembling and disassembling etching tool mold for a flexible printed circuit board.
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 4, the fast assembling and disassembling etching tool mold for a flexible printed circuit board of the present disclosure includes: an aluminum plate 1 has a plurality of successively adjoining regions 2, such as the regions between the dashed straight lines of fig. 1. Each region 2 has a plurality of first through holes 3 dispersedly arranged in the region 2; the number of the cutting die steel plates 4 is equal to that of the areas 2, cutting lines 5 are arranged on one sides, back to the aluminum plates 1, of the cutting die steel plates 4, the cutting die steel plates 4 correspond to the areas 2 one by one and are fixed in the corresponding areas 2, and each cutting die steel plate 4 is provided with countersunk through holes 6 corresponding to the first through holes 3 in the corresponding area 2 one by one and arranged on one side, back to the aluminum plates 1, of the cutting die steel plate 4; and a number of pins 7 equal to the number of first through holes 3 or counter-sunk through holes 6, each pin 7 being interference-fitted in counter-sunk through holes 6 and first through holes 3, pin 7 having a head 9 disposed inside counter-sunk 8.
Unlike the existing etching cutting die in which all the cutting lines 5 are formed on a single steel plate, the die of the present embodiment is formed by splicing a plurality of small-sized cutting die steel plates 4, and each cutting die steel plate 4 has a plurality of complete product cutting lines 5. When the cutting line 5 on a certain cutting die steel plate 4 is damaged, a cutting die steel plate 4 is manufactured again, and the damaged cutting die steel plate 4 is replaced. Compared with the existing etching cutting die, the cutting die steel plate 4 with small size is re-opened in the embodiment, so that the die opening cost is reduced, and the die opening time is saved.
In order not to increase the weight of the die significantly, the plate for fixing the cutting die steel plate 4 is made of an aluminum alloy having a smaller density than that of the steel material. Preferably, the thickness of the cutting die steel plate 4 may be thinner than that of the existing etching cutting die to offset a portion of the increased weight due to the aluminum plate 1.
The aluminum plate 1 is connected with the cutting die steel plate 4 through a pin 7, and the pin 7 is in interference fit with the countersunk head through hole 6 and the first through hole 3. By setting a suitable interference, when the pin 7 presses the wall of the first through hole 3, the material on the wall of the first through hole 3 is elastically deformed. When the pin 7 is disengaged from the first through-hole 3, the elastically deformed portion can be restored to its original shape.
The interference between the pin 7 and the countersunk through hole 6 can be set to be small. The cutting die steel plate 4 is tightly attached to the aluminum plate 1, one part of the main body of the pin 7 is in interference connection with the first through hole 3, and the head 9 of the pin 7 is matched in the countersunk head 8, so that the cutting die steel plate 4 can be fixed on the aluminum plate 1. The pin 7 is matched with the countersunk head through hole 6 with smaller interference, so that the cutting die steel plate 4 can be prevented from transversely shaking on one hand, and the installation resistance of the pin 7 is reduced due to small interference on the other hand.
When the die steel plate 4 is mounted on the aluminum plate 1, the pin 7 is struck from the die steel plate 4 side, so that the pin 7 presses the walls of the countersunk head through hole 6 and the first through hole 3 until the head 9 of the pin 7 completely enters the countersunk head 8 to assemble the die steel plate 4 to the aluminum plate 1.
When detaching the die steel plate 4 from the aluminum plate 1, the pin 7 is struck from the back surface of the aluminum plate 1, and the die steel plate 4 is detached from the aluminum plate 1 by detaching the pin 7 from the first through hole 3.
Each die steel plate 4 is fixed to the aluminum plate 1 by a plurality of pins 7 arranged in a scattered manner. In some embodiments, a pair of corners of each region 2 is provided with a first through hole 3, respectively. In contrast, a pair of corners of each cutting die steel plate 4 has countersunk through holes 6 corresponding to the first through holes 3 diagonally opposite the regions 2. The opposite corners of the cutting die steel plate 4 are connected to the aluminum plate 1 by pins 7, respectively.
In some embodiments, referring to fig. 1, a plurality of sequentially adjacent regions 2 are sequentially arranged along a first direction 10, each region 2 has 2 to 3 rows of first through hole sets 11 arranged along the first direction 10, and each row of first through hole sets 11 includes 3 first through holes 3 arranged along a second direction 12 perpendicular to the first direction 10. The rectangular dashed box in fig. 1 represents a row of the first group of through holes 11.
For example, the aluminum plate 1 has a square shape, and one pair of sides of the square shape extends in a first direction 10, and the other pair of sides extends in a second direction 12. In the embodiment shown in fig. 1, the aluminum plate 1 is divided into four regions 2, the four regions 2 are arranged in sequence along a first direction 10, and each region 2 extends along a second direction 12.
Each zone 2 is provided with 2 to 3 rows of first through-hole groups 11, for example, in the embodiment shown in fig. 1, three zones 2 have 3 rows of first through-hole groups 11, and another zone 2 has 2 rows of first through-hole groups 11.
Referring to fig. 1, 3 first through holes 3 of each row of the first through hole group 11 are arranged along the second direction. Correspondingly, countersunk through holes 6 corresponding to the number and arrangement of the first through holes 3 are formed in the die steel plate 4.
A plurality of pins 7 distributed in a scattered manner connect the cutting die steel plate 4 with the aluminum plate 1, so that the connection strength of the cutting die steel plate 4 and the aluminum plate 1 is guaranteed. Even if one or more pins 7 are not assembled in place, for example, the head 9 of the pin 7 does not abut against the die steel plate 4, or the pin 7 falls off during use, the connection between the die steel plate 4 and the aluminum plate 1 is not affected.
Further, in each row of the first through hole groups 11, one of the first through holes 3 is equidistant from both ends of the aluminum plate 1 in the first direction 10, and the other two first through holes 3 are symmetrically disposed on both sides of the first through hole 3, respectively. In other words, in the middle of the aluminum plate 1, there is a row of the first through holes 3 arranged along the first direction 10, and the first through holes 3 are symmetrically provided at both sides of the row of the first through holes 3, respectively. The first through holes 3 of the present embodiment are regularly arranged, and accordingly, the countersunk head through holes 6 of the cutting die steel plate 4 are also regularly arranged. Because the arrangement rule of the countersunk head through holes 6 on the cutting die steel plate 4 is regular, when the countersunk head through holes 6 are formed on the cutting die steel plate 4 by using a CNC (computer numerical control) or a drilling machine, the accurate position positioning of the countersunk head through holes 6 is facilitated, and the newly manufactured cutting die steel plate 4 can be accurately installed on the aluminum plate 1.
Further, the pitch between the first through holes 3 at both ends of the first through hole group 11 is different from the pitch between the first through holes 3 at both ends of the adjacent first through hole groups 11. Since the interval between the first through holes 3 at both ends of the first through hole group 11 is different from the interval between the first through holes 3 at both ends of the adjacent first through hole group 11, the first through holes 3 at both ends of the first through hole group 11 are arranged in a staggered manner, so that the arrangement of the pins 7 is further dispersed, which is beneficial to obtain a greater connection strength between the die steel plate 4 and the aluminum plate 1.
In some embodiments, the outer wall of the pin 7 is coated with an adhesive. In the present embodiment, the pin 7 is bonded to the walls of the first through hole 3 and the countersunk through hole 6 by an adhesive in addition to the interference connection with the first through hole 3 and the countersunk through hole 6, thereby further improving the connection strength between the die steel plate 4 and the aluminum plate 1.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (6)
1. Etching sword mould of fast assembly split for flexible circuit board, its characterized in that includes:
an aluminum plate having a plurality of sequentially adjoining regions, each region having a plurality of first through holes dispersedly arranged in the region;
the number of the cutting die steel plates is equal to that of the areas, one side of each cutting die steel plate, which faces away from the aluminum plate, is provided with a cutting line, the cutting die steel plates correspond to the areas one by one and are fixed in the corresponding areas, each cutting die steel plate is provided with countersunk through holes which correspond to the first through holes in the corresponding areas one by one, and the countersunk through holes are arranged on one side of each cutting die steel plate, which faces away from the aluminum plate; and
a number of pins equal to the first through hole or the counter bore, each pin being in interference fit in the counter bore and the first through hole, the pins having a head disposed within the counter bore.
2. The fast assembling and disassembling etching tool mold for flexible circuit board according to claim 1, wherein a pair of corners of each of said regions is provided with a first through hole, respectively.
3. The etching tool mold for rapid assembly and disassembly of a flexible circuit board according to claim 2, wherein the plurality of sequentially adjacent regions are sequentially arranged along a first direction, each region having 2 to 3 rows of first through hole sets arranged along the first direction, each row of first through hole sets comprising 3 first through holes arranged along a second direction perpendicular to the first direction.
4. The etching tool mold for rapid assembly and disassembly of a flexible circuit board according to claim 3, wherein in each row of the first through hole groups, one of the first through holes is equidistant from both ends of the aluminum plate in the first direction, and the other two first through holes are symmetrically disposed on both sides of the first through hole respectively.
5. The etching tool mold for rapid assembly and disassembly of a flexible circuit board according to claim 4, wherein the pitch between the first through holes at both ends of a first through hole group is different from the pitch between the first through holes at both ends of an adjacent first through hole group.
6. The fast assembling and disassembling etching knife mold for flexible circuit board according to claim 1, wherein the outer wall of said pin is coated with an adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223134742.2U CN218614517U (en) | 2022-11-24 | 2022-11-24 | Etching knife mould for fast assembling and disassembling flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223134742.2U CN218614517U (en) | 2022-11-24 | 2022-11-24 | Etching knife mould for fast assembling and disassembling flexible circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218614517U true CN218614517U (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223134742.2U Active CN218614517U (en) | 2022-11-24 | 2022-11-24 | Etching knife mould for fast assembling and disassembling flexible circuit board |
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| Country | Link |
|---|---|
| CN (1) | CN218614517U (en) |
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2022
- 2022-11-24 CN CN202223134742.2U patent/CN218614517U/en active Active
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