KR100544454B1 - coverlay film punching machine - Google Patents

Abstract

In the coverlay film punching apparatus according to the present invention, the reel 41 wound around the coverlay film F is rotatably mounted, and the drawing direction of the film F is intermittently fixed to the reel 41. An unloading unit 40 composed of an air chuck 42 for rotating the film F to maintain a constant tension and a motor 43 for rotating the air chuck 42; An operation structure for vertically reciprocating movement along the guide rails 51, and for operating the feeder F and the feeder F for pressing the coverlay film F drawn from the reel 41 and transferring the coverlay film F by a predetermined interval. A feeding unit 50 composed of a servo motor 53; The upper mold 62 and the upper mold 62 for punching the coverlay film (F) transported to the right position by the feeder 52 as a fixed lower mold 61, the structure corresponding to the lower mold 62 to move up and down reciprocating A punching unit 60 composed of an actuator 63 for operating the upper mold 62; A slip roller 71 for transferring the punched coverlay film F in a slip method, a cutter 72 for cutting the transferred film F at regular intervals, and a film cut by the cutter 72. It comprises a cutting unit 70 consisting of a loading means for loading (F).

According to the coverlay film punching apparatus according to the present invention as described above, it is easy to set the mounting position of the reel, the tension of the film is properly maintained, the coverlay film is precisely conveyed, the punching projection in one line Coverlay film punching, such as easy to manufacture and replace mold, reduce friction between mold and film, and evenly arrange the loading state of film sheet due to loading cassette. Provides the advantage of increasing the efficiency and precision of the work

Description

Coverlay film punching machine             

1 is a schematic view showing a coverlay film punching apparatus according to the prior art.

Figure 2a is a front view showing a coverlay film punching apparatus according to an embodiment of the present invention.

FIG. 2B is a plan view of FIG. 2A.

Figure 3a is a plan view showing an unloading unit of the coverlay film punching apparatus according to this embodiment.

3B is a front view of FIG. 3A.

FIG. 3C is a right side view of the FIG. 3B.

Figure 4a is a plan view showing a feeding unit of the coverlay film punching apparatus according to an embodiment of the present invention.

4B is a front view of FIG. 4A.

4C is a right side view of FIG. 4B.

Figure 5a is a perspective view showing a punching unit of the coverlay film punching apparatus according to this embodiment.

5B is a bottom perspective view showing the upper mold of the punching unit in the coverlay film punching apparatus according to the present embodiment.

5C is a front view of FIG. 5A.
FIG. 5D is a right side view of FIG. 5A.

Figure 6a is a plan view showing a cutting unit of the coverlay film punching device according to this embodiment.

FIG. 6B is a front view of FIG. 6A.

Figure 7 is an exemplary view showing the operation of the loading means applied to this embodiment.

<Explanation of symbols for the main parts of the drawings>

40: unloading unit 41: reel

42: air chuck 44: positioning cylinder

45: guide roller 48: air spray bar

50: feeding unit 51: guide rail

52: feeder 53: servo motor

54: Y axis edge sensor 55: Y axis control ball screw

56: stepping motor 57: home switch

58: limit switch 60: punching unit

61: lower mold 611: lifting block

62: upper mold 626: guide pin

63: actuator 70: cutting unit

71: slip roller 72: cutter

73: loading cassette 731: side panel

The present invention relates to a coverlay film punching device, and more particularly to a coverlay film punching device in which the operational precision and efficiency are improved.

In general, a printed circuit board (PCB: Printed Circuit Board or PWB: Printed Wire Board) is for electrically connecting a variety of components, single-sided circuit board, double-sided circuit board, multilayer circuit board according to the number of wiring circuit surface And the like, and are classified into a rigid circuit board, a flexible circuit board, and a rigid flexible circuit board according to the bending characteristics of the substrate.

Among them, flexible circuit boards and hard-flex circuit boards are widely applied to small electronic products that are rapidly developing in the electronic industry. It is useful for the product.

The flexible circuit board is a laminated structure in which several materials are overlapped, and the manufacturing process is a cutting process of cutting a copper clad laminated board to meet specifications, a drilling process of forming guide holes in the cut disc, and a copper foil surface having guide holes formed thereon. An exposure step of printing a circuit, an etching step of corroding copper foil to form a circuit, and a coverlay film attached to the copper foil, followed by a coverlay film pressing step of pressing the coverlay film at a high temperature.

Here, the coverlay film is attached to the insulation and circuit protection of the surface of the substrate, processed to expose the circuit portion by a punching operation prior to being attached to the substrate and then attached to the original plate, such a punching operation is its form According to the so-called sheet (sheet) and reel (reel) method.

The sheet method is punched by placing a sheet of coverlay film cut to a suitable size in a mold, and the coverlay film has to be manually transported to have a low work efficiency and a high defect rate of the product.

The reel method is devised to solve the problem of the sheet method is to perform a punching operation while continuously supplying the coverlay film using a reel (reel) wound coverlay film.

The punching device used in the conventional reel-type coverlay film punching operation includes a press unit for punching the coverlay film, a supply unit for supplying the coverlay film to the press unit, and a loading unit for cutting and loading the punched coverlay film. consist of.

As shown in FIG. 1, the press part includes a lower mold 11 fixed to the die 10, an upper mold 12 vertically operated as a structure corresponding to the lower mold 11, and an upper mold 12. It comprises an actuator 13 for operation.

Each of the molds 11 and 12 has a structure that can form a plurality of punching holes at the same time.

The supply part includes a reel 20 to which the coverlay film F is wound and rotatably mounted, a plurality of support rollers 21 for guiding the coverlay film F, the reels 20 and the support rollers 21. ), A tension roller 22 which maintains the tension state of the coverlay film F being transferred, and a sensor 23 which senses the position of the tension roller 22.

The stacking unit is a pair of pressure rollers 30 closely arranged vertically, a cutter 31 for cutting the coverlay film F transported by the upper and lower pressure rollers 30 at regular intervals, and a cutter 31. It consists of a loading box 32 for loading the film cut into a sheet (sheet) form.

According to such a conventional coverlay film punching device, the coverlay film F is unwound, conveyed by the pressure roller 30, and supplied to the punching position between both molds 11 and 12, and by the actuator 13. The upper mold 12 is operated to cover the coverlay film F, and the punched coverlay film F is cut by the cutter 31 and then stored in the loading box to complete the punching operation.

Here, by one punching operation, a plurality of punching holes, that is, a group of punching holes, are simultaneously formed in the structure of both molds 11 and 12, and a predetermined gap is maintained between the groups of punching holes.

As described above, according to the conventional punching device, the punching operation is performed continuously, thereby increasing the work efficiency.

However, the conventional coverlay film punching device has some problems in terms of work accuracy and efficiency, which will be described below.

First, since the conveyance of the coverlay film (F) is made by a so-called rolling method by the rotational operation of the pressure roller (30), a certain amount of slip phenomenon occurs during the conveying process, and the amount of film transfer predetermined by such slip phenomenon. An error occurs at.

Such a transport error occurs not only in the direction in which the film F is conveyed, but also in a direction perpendicular to the film conveying direction. When these errors accumulate, gaps are generated between the punching hole groups formed therein and the punching hole groups. Is misaligned.

Of course, the tension roller 22 tensions the film F between the reels 20 and the molds 11 and 12, and between the molds 11 and 12 and the pressure roller 30, thereby reducing the feed error. Although it is corrected, the tension method can only correct the error in the conveying direction, but there is a problem that the error in the direction perpendicular to the conveying direction is difficult to correct, and some slip continues to occur due to the characteristics of the rolling method.

In addition, according to the related art, when the punched coverlay film F is cut by the cutter 31 and then loaded into the loading box 32, the coverlay film F is pushed into the loading box 32 from the one end of the film in a so-called simple sliding method. According to this, due to friction between the film to be transferred and the loaded film, and the end of the structural film with the punching hole formed intermittently caught in the punching hole of the other film, the loaded film is pushed together, the loading state is disturbed You lose.

Therefore, according to the prior art, the punching holes are formed in a non-uniform manner, which not only reduces the accuracy of the product but also causes the loading state of the coverlay film F to be disturbed. This happens.

The present invention has been made to solve the above-mentioned conventional problems, it is an object of the present invention to provide a coverlay film punching device that can increase the processing precision and efficiency in punching the coverlay film in a reel method.

The coverlay film punching apparatus provided to achieve the above object comprises an unloading unit, a feeding unit, a punching unit, a cutting unit and an antistatic means.
Here, the unloading unit, the air chuck and the air chuck of the air chuck so that the reel is wound rotatably mounted, the film is maintained in a constant tension by being rotated in the opposite direction of the extraction direction of the film in a fixed state with the reel It consists of a motor for rotary operation.
The feeding unit is an operation structure that vertically reciprocates along the guide rail, and feeds the coverlay film drawn from the reel and transfers the feedlay by a predetermined interval, a servo motor for operating the feeder, and a rotation operation of the servo motor. It consists of a ball screw that converts into a vertical reciprocating operation.
The punching unit has a structure for reciprocating up and down corresponding to a fixed lower mold and a lower mold, and includes an upper mold for punching a coverlay film transferred to a proper position by the feeder and an actuator for operating the upper mold. .
The cutting unit includes a slip roller for transferring the punched coverlay film in a slip method, a cutter for cutting the transferred film at regular intervals, and a stacking means for aligning and stacking the film cut by the cutter.
The static eliminating means is disposed between the feeding unit and the punching unit to cross the lower side of the coverlay film, and comprises an air spray bar having a discharge port on an upper surface thereof, and an air compressor for supplying air charged to the air spray bar.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 2A to 7.

The coverlay film punching apparatus according to the embodiment of the present invention, as shown in Figure 2a, 2b, the unloading unit 40 for taking out the film (F) from the reel 41, the coverlay film is wound, and withdrawn Removing static electricity from the feeding unit 50 for transporting the film, the punching unit 60 for punching the transported film F, the cutting unit 70 for cutting and loading the punched film F, and the film F It comprises a static elimination means.

As shown in FIGS. 3A, 3B, and 3C, the unloading unit 40 includes an air chuck 42 on which the reel 41 around which the coverlay film F is wound is rotatably mounted, and the air chuck 42. It consists of a motor 43 for the rotational operation of the air chuck 42 is equipped with a plurality of protrusions 421 for selectively pressing and fixing the inner surface of the reel 41 by expanding and projecting by air pressure.

In addition, the unloading unit 40 further includes a positioning cylinder 44 for easily setting the mounting position in the process of mounting the reel 41 to the air chuck 42. The cylinder 44 is provided on one side of the air chuck 42 to be reciprocated in a predetermined interval in parallel with the air chuck 42 is made of a structure that is fixed in a changeable position.

Feeding unit 50, as shown in Figure 4a, 4b, 4c, the guide rail 51 disposed in the longitudinal direction along the conveying direction (X axis) of the film, and vertical reciprocating movement along the guide rail 51 It consists of a feeder 52 and a servomotor 53 for the operation of the feeder 52.

Here, the feeder 52 has a bar shape having a length exceeding the transverse width of the film F, and has an operating structure that also moves in the up and down direction. Connected.

In the feeding unit 50, Y-axis control means for controlling in the direction (Y-axis) perpendicular to the film feeding direction and the horizontal plane in order to maintain the feeding path and the feeding interval of the film (F), and the feeding direction (X-axis) X-axis control means is also provided to increase the accuracy, the Y-axis control means of the Y-axis edge sensor 54 and the Y-axis edge sensor 54 provided to overlap the edge of the coverlay film (F) The Y-axis control ball screw 55 is operated in accordance with the signal, and the stepping motor 56 for Y-axis operation of the Y-axis control ball screw 55.

Here, the Y-axis control ball screw 55 moves along the Y-axis in contact with one side of the coverlay film (F), and has a structure that is rolled in the X-axis direction.

In addition, the X-axis control means is arranged at a predetermined interval in the conveying direction of the film (F), the home switch (57) and the limit switch (limit switch) in contact with the tip as the feeder 52 moves switch 58).

The static eliminating means is located between the feeding unit 50 and the punching unit 60, the air spraying bar 48 is disposed in the form across the coverlay film (F) below the coverlay film (F), It is composed of an air compressor (not shown) for supplying air charged to the air spray bar (48).
Here, the air spraying bar 48 has a rod shape having a length exceeding the width of the coverlay film F, and an air pipe 481 to which air is supplied from the air compressor is connected to one side thereof, A discharge port 48a through which air is discharged is formed, and the discharge port 48a extends in the longitudinal direction of the air spray bar 48, so-called slit for injecting the air into contact with the full width of the coverlay film F. (slit) form (see Figure 5a).
The punching unit 60 has a lower mold 61 fixed as shown in FIGS. 5A, 5B, 5C, and 5D, an upper mold 62 corresponding to the lower mold 61, and reciprocating up and down, and an upper mold 62. ) Is made up of an actuator 63 (see FIG. 2A).

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Here, the upper mold 62 has an upper plate 621 attached to the actuator 13, an intermediate plate 622 attached to the bottom of the upper plate 621, and a lower plate 623 disposed below the intermediate plate 622. ), A bottom of the intermediate plate 622 is provided with a series of punching protrusions 624, each one of the guide projections 625 are provided on both outer sides of the row of punching protrusions (624). .
In addition, an elastic member (not shown) is interposed between the spaced intermediate plate 622 and the lower plate 623, and the lower plate 623 includes a punching protrusion 624 and a guide protrusion provided in the intermediate plate 622. Each punching protrusion 624 and the guide protrusion hole 62b corresponding to each punching protrusion 624 and the guide protrusion 625 are formed so that the 625 can protrude therethrough.
The bottom surface of the lower plate 623 is provided with a guide pin 626 inserted into the pin groove 61b described later of the lower mold 61. Meanwhile, as illustrated in FIG. 5D, the guide protrusion 625 is disposed at a position ahead of the guide pin 626 by a predetermined interval in the X-axis direction.
A punching groove 61a corresponding to the punching protrusion 624 of the upper mold 62 is formed on the center of the lower mold 61, and a pin groove corresponding to the guide pin 626 on the outer side of the punching groove 61a. 61b) is formed, and a projection groove 61c corresponding to the guide projection 625 is formed in front of the pin groove 61b.

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And, the lower mold 61 is excavated by a predetermined depth within a range that does not exceed the transverse width of the coverlay film (F), except for a predetermined band around the portion where the punching groove (61a) is formed. It is made of a (凸形) structure, the upper surface of the lower mold 61 is provided with a pair of lattice-type lifting block 611 spaced apart about the punching groove (61a) at each tip.

The cutting unit 70 is a slip roller 71 for transferring the punched coverlay film F in a slip method as shown in FIGS. 6A and 6B, and a cutter for cutting the transferred film F at regular intervals. 72 and loading means for loading the film F cut by the cutter 72.

The cutter 72 has a structure capable of reciprocating in the X-axis direction to adjust the cutting position.

The stacking means is a stacking cassette including a pair of side panels 731 arranged in such a manner that the distance therebetween is adjustable, and left and right support panels 732 connected to both left and right ends of the side panels 731 so as to be rotatable. And an actuator (not shown) for the operation of the 73 and the left and right support panels 732.

 Here, the support panel 732 is bent so as to face each other the upper end is made of a structure inclined in a downward direction in the cutter direction, and is rotated in a form that is extended by the actuator.

Operation of the coverlay film punching device according to an embodiment of the present invention configured as described above, the unloading step by the unloading unit 40, the conveying step by the feeding unit 50, by the punching unit 60 Punching step, it can be divided into cutting step by the cutting unit 70, each operation described as follows.

First, the reel 41 around which the film F is wound is mounted to the air chuck 42. At this time, the positioning cylinder 44 (shown in the drawing as a virtual line) in the basic position is expected of the reel 41. The reel 41 is inserted into the air chuck 42 and then pushed to the position blocked by the positioning cylinder 44. In this way, the Y-axis mounting position of the reel 41 can be easily matched.

In the unloading step, while the reel 41 is mounted on the air chuck 42, the air chuck 42 rotates in the conveying direction to take out the coverlay film F wound on the reel 41. The film F is supplied to the feeding unit 50 through the lower side of the guide roller 45.

At this time, the air chuck 42 intermittently rotates in the opposite direction to the normal rotation direction of the reel 41 (the direction in which the film is wound), and also performs a so-called tension control operation so that the extracted film F maintains an appropriate tension. Done.

 The film F unloaded from the reel 41 is conveyed by the feeder 52. According to the compression conveying method, unlike the conventional rolling method, the error of the feeding distance due to the slip phenomenon hardly occurs because the film F The interval between the punching holes p (refer FIG. 5A) formed in (F) is precisely maintained.

On the other hand, the transfer operation of the film is carried out more precisely by the Y-axis control means and the X-axis control means, it will be described as follows.

First, according to the Y-axis control means, the Y-axis edge sensor 54 detects this in the case where the film F deviates from the traveling path by being twisted in the direction perpendicular to the feeding direction (Y-axis direction) in the process of conveying the film F. By generating a signal, the stepping motor 56 is actuated by this signal, so that the Y-axis control ball screw 55 in contact with the film F moves along the Y-axis and moves the film F to immediately advance the path of travel. Caught.

Here, since the Y-axis control ball screw 55 operates in the Y-axis direction and is rolled in the X-axis direction, the feed of the film F is not affected.

The X-axis control means is to accurately maintain the feed interval of the film (F) by the feeder 52, the feeder 52 of the structure of the mold (61, 62) forming only one row of punching holes in one punching While conveying the film F, it stops repeatedly in accordance with the punching position.

The operation of the feeder 52 proceeds to meet a preset reference value (number of times of punching, interval between punching rows, etc.), and the feeder 52 which transfers the film F by an interval punching one section according to the reference value is By returning to the start position connected with the home switch 57, one punching cycle is completed, and when returning, the feeder 52 moves upward and moves while maintaining a constant distance from the film F.

At this time, when a malfunction occurs in which the feeder 52 moves above a predetermined reference value, the feeder 52 and the limit switch 58 are connected to generate a warning signal, thereby modifying the control value for the feeder 52. The malfunction of the feeder 52 is prevented from spreading.

Meanwhile, in the air spray bar 48 constituting the static eliminating means, the antistatic air is continuously sprayed through the discharge port 48a, and the coverlay film F to be transferred is the air spray bar before reaching the punching unit 60. The static electricity is removed by being in contact with the antistatic air discharged from the 48 and the antistatic treatment.
According to the antistatic treatment, the coverlay film F is punched by the punching unit 60 described below, and then the so-called lifting phenomenon is prevented from being lifted up along the upper mold 62 due to static electricity, and at the same time, the lower mold 61 is prevented. The occurrence of resistance in the conveying direction by sticking is also prevented.
The film F transferred to the punching unit 60 is punched by the operation of both molds 61 and 62. When the upper mold 62 is lowered by the operation of the actuator 13, the upper mold 62 Lower plate 623 is in contact with the film, the intermediate plate 622 is pressed down while pressing the elastic member. Subsequently, the punching protrusions 624 and the guide protrusions 625 provided in the intermediate plate 622 pass through the punching protrusion holes 62a and the guide protrusion holes 62b of the lower mold 61 to form the lower mold 61. The punching holes p and guide holes g are formed in the coverlay film F while being inserted into the punching grooves 61a and the projection grooves 61c, respectively.
That is, one punching hole p is formed in the coverlay film F by one punching, and a guide hole g is formed at the edge of the position slightly earlier.

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At this time, the formed guide hole (g) serves to correct the punching position more precisely by passing through the guide pin 626 of the upper mold 62 before forming the punching hole (p) in the next punching operation.
On the other hand, after the punching hole (p) and the guide hole (g) is formed in the coverlay film (F), the upper mold 62 is raised again by the operation of the actuator 13, the lower plate 623 is pressed The elastic member is spaced apart from the intermediate plate 622 again.

In the punching operation, the film F transferred to the upper surface of the lower mold 61 is smoothly transferred by receiving only a minimum frictional resistance due to the structural characteristics of the lower mold 61 (steel structure) as described above. Since the edge is caught by the lifting stopper 611, the phenomenon that the upper mold 62 is attached to the upper mold 62 in the process of moving upward after the punching is prevented.
The mechanical lifting prevention effect by the lifting stopper 611 prevents the lifting phenomenon of the coverlay film F in addition to the electrical lifting prevention action by the aforementioned antistatic means.

The punched film F is continuously conveyed by the slip roller 71 and cut at regular intervals by the cutter 72 to make a sheet of sheets having a plurality of rows of punching holes p formed therein.

Since the position of the cutter 72 can be changed within a predetermined range in the X-axis direction, the size of the sheet may be varied according to the number of punching holes formed in the film F. FIG.

The film F made of sheets is moved onto the left and right support panels 732 of the stacking cassette 73 by sliding one by one, and the left and right support panels 732 are conveyed by the film sheet F as shown in FIG. When it comes down, it will fall down by rotating in opposite directions.

According to the so-called vertically descending loading method, unlike the conventional sliding method, since the friction between the film sheets does not occur, the alignment of the stacked film sheets is not disturbed.

As described above, according to the coverlay film punching apparatus according to the present invention,

1) the mounting position of the reel is easily set, and the tension of the film is properly maintained;

2) the coverlay film is conveyed precisely;

3) the punching protrusion is composed of one line, and the lower mold's structural characteristics make it easy to manufacture and replace the mold, and the friction between the mold and the film is reduced;                     

4) The stacking condition of the film sheet is evenly aligned due to the stacking cassette.

It provides the advantage that the efficiency and precision of the coverlay film punching operation can be increased.

Claims (7)

A reel wound around the coverlay film is rotatably mounted, and is intermittently rotated in the opposite direction of the film extraction direction in a fixed state with the reel so that the film maintains a constant tension and a motor for rotating the air chuck. Configured unloading unit; Vertical reciprocating movement along the guide rail, the feeder for pressing the coverlay film drawn from the reel to feed by a predetermined interval, the servo motor for the operation of the feeder, the vertical reciprocating operation of the feeder to rotate the servo motor Feeding unit consisting of a ball screw to switch to; A punching unit comprising a fixed lower mold, an upper mold for punching a coverlay film transported to the right position by the feeder as a structure for reciprocating up and down corresponding to the lower mold, and an actuator for operating the upper mold; A cutting unit comprising a slip roller for transferring the punched coverlay film in a slip method, a cutter for cutting the transferred film at regular intervals, and a stacking means for loading the film cut by the cutter. Antistatic means for removing the static electricity of the coverlay film by releasing the charged air before the coverlay film is punched by the punching unit Coverlay film punching device comprising a. The method of claim 1, wherein the unloading unit It is provided on one side of the air chuck is moved in a predetermined interval in parallel with the air chuck, characterized in that it further comprises a positioning cylinder to enable the reference setting of the mounting position by limiting the movement to the take-up reel when mounting the winding reel Coverlay film punching device. The method of claim 1, wherein the feeding unit Y-axis edge sensor installed to overlap the edge of the coverlay film, A Y-axis control ball screw which is in contact with one side of the coverlay film and is moved along the direction (Y axis) perpendicular to the film transport direction and the horizontal plane and rolled in the film transport direction, Stepping motor for vertical operation of the roller The coverlay film transfer device further comprises a Y-axis control means configured to prevent the path of the coverlay film in the Y-axis direction. The method of claim 1, wherein the antistatic means An air spraying bar having a discharge port having a slit-shaped discharge port in a longitudinal direction exceeding the width of the coverlay film, the rod shape being disposed in a form crossing the coverlay film between the feeding unit and the punching unit; A compressor for supplying charged air to the air spray bar Coverlay film transfer device, characterized in that consisting of. The method of claim 1, The lower mold upper surface of the coverlay film punching device, characterized in that a pair of lattice-type lifting stops spaced about the punching hole is provided at the transverse end of the film. The method of claim 1, The cutter is a coverlay film punching device, characterized in that made of a structure capable of reciprocating along the conveying direction of the film to adjust the cutting position. The method of claim 1, wherein the loading means A pair of side panels arranged parallel to each other so that the distance between them is adjustable and rotatably connected to the left and right ends of the side panel, respectively, the upper end is bent facing each other to the left and right support panels of the structure inclined in some downward direction in the cutter direction It is configured, as the cut coverlay film is supplied, the stacking cassette for allowing the coverlay film to be dropped down and loaded in the box by rotating the left and right support panels in an expanded form; The coverlay film punching device, characterized in that consisting of an actuator for the operation of the left and right support panels.

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