JP2000343491A - Punching device for tape like matter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a punching device for tape like matter capable of punching highly accurately for a predetermined punching pattern by keeping an object part to be punched for tape type matter (a punching area) flat. SOLUTION: This device comprises a punching machine 30 which has several punching units 31 comprising a punch 31a and its corresponding die 31c controllingly moved to X axis and Y axis directions by an X axis moving mechanism 50 and a Y axis moving mechanism 60 between a feeding mechanism 10 adapted to feed a tape type matter 100 from a roll web 100a to the X axis direction and a rolling mechanism 20 adapted to roll up the tape type matter 100, and a rotatable pair of upper and lower guide rollers 40 having the tape type matter 100 sandwiched from above and below mounted on each of feeding and rolling sides at near the punching machine 30 such that the guide rollers moves to the X axis direction in conjunction with a moving stage 51 of the X axis moving mechanism 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape punching device, and more particularly, to a TAB (Tab) in a semiconductor device.
ape Automated Bonding) and TC
Tape for P (Tape Carrier Package), PGA (Pin Grid Array), B
GA (Ball Grid Array), CSP (C
The present invention relates to a punching device for punching a tape-like material used for a flexible substrate or the like, such as a hip size package, in a predetermined punching pattern while feeding the same from a roll.

[0002]

2. Description of the Related Art Conventionally, in a punching device of this kind, a tape-like material is moved from an original roll in the X-axis direction (the longitudinal direction of the tape-like material).
A plurality of punch units each including a punch and a die corresponding thereto are provided between an unwinding mechanism for unwinding and a winding mechanism for winding the unwinding mechanism in the X-axis direction and the Y-axis direction by the X-axis moving mechanism and the Y-axis moving mechanism. There is a type in which a camera unit including a controlled punched drilling machine and having a CCD camera for imaging a reference hole or a reference mark serving as an origin in a predetermined drilling pattern is arranged in parallel with the drilling machine. By the way, according to the conventional punching device, although the feeding mechanism and the winding mechanism are driven in synchronization with each other, there is a slight looseness in the tape-shaped material, or the tape-shaped material between the feeding mechanism and the winding mechanism. Due to its own weight or the like, there is a possibility that "slack" may occur in a tape-like material between the feeding mechanism and the winding mechanism, that is, in a portion to be pierced of the tape-like material. In order to solve this problem, the applicant of the present application has provided two clamps so as to sandwich the punch from the feeding side and the winding side, and the tape-like material is pulled in the X-axis direction by both these clamps. A punching device for performing high-precision drilling in a flat shape has been disclosed in the prior application (Japanese Patent Application No. 11-0 / 1999).
48250).

In the invention according to the above-mentioned application, however, although the "slack" in the X-axis direction of the tape-shaped object is eliminated, the tape-shaped object has a substantially vertical cross section in which a halfway portion in the Y-axis direction is directed upward. It was not always sufficient to eliminate the "deflection" in the Y-axis direction, such as the shape and the longitudinal section having a generally arcuate longitudinal section with the middle part directed downward. Therefore, as shown in FIG. 4A, when the punch 30 moves in the Y-axis direction, the end of the die 31c of the punch 30 is caught on the end of the tape-shaped material 100, and The object 100 may be shaken in the Y-axis direction, or the tape-shaped object may be damaged by the surface of the die rubbing the tape-shaped object locally. In addition, as shown in FIG. 5, when the punch 31 a or the stripper 31 b provided around the tip of the punch 31 a is lowered, a portion of the tape-shaped material 100 that rises from the die 31 c surface due to “deflection”,
There is a problem that the tape-shaped material 100 is pushed by the lowered punch 31a or the stripper 31b and is shifted in the Y-axis direction so as to escape. Further, a portion of the tape-like material that has risen from the die surface due to “deflection”
When there is a reference hole or a reference mark captured by the CD camera, there is a problem that the CCD camera becomes out of focus. In addition, there has been a problem that "deflection" occurs in the tape-like material due to static electricity charged in the tape-like material.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to maintain a portion (perforation area) of a tape-like material to be perforated flat. An object of the present invention is to provide a tape-shaped material punching device that can perform high-precision punching in a predetermined punching pattern.

[0005]

As a technical means of the present invention for achieving the above object, a first aspect of the present invention is a feeding mechanism for feeding a tape-like material from a material roll in the X-axis direction and a winding mechanism for winding the same. A punching machine in which a plurality of punch units each having a punch and a corresponding die are controlled and moved in the X-axis direction and the Y-axis direction by an X-axis moving mechanism and a Y-axis moving mechanism between the punching machine and the punching machine; And a pair of upper and lower guides rotatable in a state where the tape-like material is sandwiched from above and below, on each of a feeding side and a winding side in the vicinity of the punching machine. A roller is provided so as to move in the X-axis direction together with the moving table of the X-axis moving mechanism. This claim 1
In the above, the means for providing the guide roller to move in the X-axis direction together with the moving table of the X-axis moving mechanism, for example, the base of the shaft portion of the guide roller to the moving table, via a bearing member or bracket Just fix it. On this occasion,
Preferably, as set forth in claim 2, the guide roller is provided such that the interval between the guide roller and the camera unit can be adjusted according to the width in the X-axis direction. Further, in order to keep the tape-like material flat, a fixed clamp and a movable clamp for clamping the tape-like material are sandwiched between the guide rollers on the pay-out side and the winding side. The movable clamp is movable in the X-axis direction, and finely moves in the opposite direction to the fixed clamp in a state where the tape-like material is clamped by both clamps, and is formed so as to be fixed at the fine movement position. . In the present invention, as means for finely moving the movable clamp in the direction opposite to the fixed clamp and fixing at the fine movement position, for example, a cylinder, a motor, a cam, a ball screw mechanism, or the like is used. The movable clamp can be configured to operate as described above by appropriately combining or the like. According to a fourth aspect of the present invention, in the tape-shaped punching device according to the third aspect, the clamp on the camera unit side is moved as close as possible to the punching machine, thereby omitting the guide roller on the camera unit side. It is also possible to
Thereby, the drilling device can be simplified. Furthermore,
To reduce the rotational resistance of the guide roller,
As described in the above, the guide roller may be constituted by a shaft portion having one end fixed to the moving table of the X-axis moving mechanism, and a plurality of roller portions rotatably inserted through the shaft portion. Good. Further, as described in claim 6, by forming the guide roller with a conductive material for removing static electricity of the tape-like material, "bending" caused by static electricity of the tape-like material can be prevented. Specifically, the guide roller, for example, the shaft portion and the roller portion may be formed of copper, iron, an alloy thereof, or a resin containing the same.

According to the above technical means, the present invention has the following operations. (Claim 1) Since the guide roller sandwiches the tape-shaped material from above and below on the feeding side and the winding side in the vicinity of the punch, the "deflection" of the tape-shaped material in the Y-axis direction is eliminated. Further, when the drilling machine moves in the X-axis direction, the guide roller moves in the X-axis direction together with the moving table of the X-axis moving mechanism while freely rotating while sandwiching the tape-shaped material. Also, when the tape-shaped object is fed by the feeding mechanism and the winding mechanism in a fixed amount, the guide roller does not hinder the movement of the tape-shaped object by freely rotating while sandwiching the tape-shaped object. (Claim 2) When the number of punch units or camera units is increased or decreased in the X-axis direction, the distance between both guide rollers can be adjusted according to the width in the X-axis direction. (Claim 3) The tape-shaped material is fed in a fixed amount so that a punching area (a portion to be punched) is opposed to a punching machine while being fed by a feeding mechanism and wound by a winding mechanism. Each time, the tape-shaped object is clamped by the fixed clamp and the movable clamp, and the movable clamp is moved in the opposite direction to the fixed clamp, thereby eliminating the "deflection" in the X-axis direction in the perforated area. At this time, the movement of the movable clamp is very small and is fixed at the fine movement position, so that an unnecessary load is not applied to the tape-like material, and a large number of fine holes drilled in the drilling area are expanded, There is no fear that the area is elongated and the accuracy of the drilling pattern is reduced. (Claim 4) The clamp on the camera unit side performs the same function instead of the guide roller on the clamp side. That is,
The clamp on the camera unit side and the guide roller cooperate to eliminate the "flexure" of the tape-shaped object in the Y-axis direction. In addition, the two clamps cooperate to eliminate the "deflection" of the tape in the X-axis direction. Since the clamp acting in place of the guide roller is provided on the camera unit side, even when the punch unit is configured by increasing the number of punch units, the clamp and the increased punch unit interfere with each other. Never. (Claim 5) Since the guide roller is composed of the shaft portion and the plurality of roller portions rotatably inserted into the shaft portion, the tape-shaped material is narrow with respect to the entire length of the guide roller. Even in this case, since only the roller portion that is in contact with the tape-shaped object rotates, the rotation resistance of the roller portion when the tape-shaped object is fed in a fixed amount,
Alternatively, the rotation resistance of the roller portion when the guide roller moves in the X-axis direction with respect to the tape-shaped object is small. (Claim 6) Since the guide roller is made of a conductive material, the electric charge charged on the tape-like material moves to the guide roller. That is, the static electricity of the tape is removed.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an example of a tape-shaped punching device according to the present invention.

[0008] This punching device has a feeding mechanism 1 for feeding out a tape-like material 100 in the X-axis direction (the longitudinal direction of the tape-like material).
0, a winding mechanism 20 for winding the same, and a punch 3 provided between the feeding mechanism 10 and the winding mechanism 20.
0 and a camera unit 70 juxtaposed with the drilling machine 30.
And an X-axis moving mechanism 50 and a Y-axis moving mechanism 60 that control and move the drilling machine 30 and the camera unit 70 in the X-axis direction and the Y-axis direction, and are provided on the feeding side and the winding side in the vicinity of the drilling machine 30, respectively. Guide roller 40,
40, and a fixed clamp 80 and a movable clamp 90 disposed so as to sandwich the guide rollers 40, 40 (see FIG. 1).

The feeding mechanism 10 is provided with a feeding roll 11 for feeding the tape-like material 100 in the X-axis direction from the raw material roll 100a, and piercing the left and right edges of the tape-like material 100 at appropriate intervals in the length direction. Engagement hole 102
And a sprocket wheel 12 for guiding the tape-shaped object 100 in the X-axis direction,
00 in the X-axis direction by a fixed amount.

The winding mechanism 20 is provided with the tape-shaped material 100.
And a sprocket wheel 22 that engages with the engaging hole 102 and guides the tape-shaped material 100 in the direction of the winding roll 21.
00 is wound up by a fixed amount. A drive source composed of a servomotor is directly connected to the feeding roll 11 and the winding roll 21. The sprocket wheels 12 and 22 are also directly connected to a drive source composed of a servomotor so as to synchronize with the feeding roll 11 and the winding roll 21.

The punch 30 includes a plurality of punch units 31 each having a punch 31a and a die 31c corresponding to the punch 31a. The punch 30 is arranged along with a camera unit 70 on a moving table 61 of a Y-axis moving mechanism 60. Punch unit 31
As shown in FIG. 2, a punch 31a having a shape and a size different from each other in the upper half portion has a horizontal U-shape in a side view in which a central horizontally long space portion is a carry-in space 32 for the tape-like material 100. A stripper 31b around the punch 31a is replaceably provided, and a die 31c corresponding to the punch 31a is provided in the lower half.
It has. Further, the camera unit 70 has a central horizontally long space as a carry-in space 72 for the tape-shaped material 100, and has a substantially U-shape in side view similar to the punch unit 31, and is provided with a CCD camera 71 provided in an upper half part. , A reference hole or reference mark 103 serving as an origin in a predetermined drilling pattern.

The X-axis moving mechanism 50 is configured such that the moving table 51 is controlled and moved in the X-axis direction by a ball screw mechanism 52, and the guide rail 63 is fixed on the machine base 1. Similarly, the Y-axis moving mechanism 60 is configured such that the moving table 61 is controlled and moved on the guide rail 63 in the Y-axis direction by the ball screw mechanism 62. It is fixed on a moving table 51.

The guide roller 40 is a pair of upper and lower rollers composed of an upper roller 41 and a lower roller 42 having the same configuration, in which a plurality of cylindrical roller portions 40b are inserted in a skewered manner into a shaft portion 40a (FIG. 1). 3). The guide roller 40 includes a support bracket 43 for supporting the base end of the shaft portion 40 a for each of the upper and lower rollers 41 and 42.
, So that the tape-like material 100
The plurality of roller portions 40b are configured to be rotatable while holding the roller therebetween. Then, a mounting bracket 44 fixed to the front of the hand of the movable base 51 with screws is provided.
By engaging the lower end of the support bracket 43 and fixing it by screwing, the support bracket 43 is moved in the X-axis direction together with the X-axis moving mechanism 50 at two positions near the punching machine 30 on the feeding side and the winding side.

The shaft 4 constituting the guide roller 40
0a and the roller portion 40b are made of a conductive material, for example, the shaft portion 40a and the roller portion 40b are made of copper, iron or an alloy thereof, or a resin containing the same. It escapes to the machine base 1 via the support bracket 43, the mounting bracket 44, the X-axis moving mechanism 50, and the like. Also, the roller portion 40b
Is detachably inserted into the shaft portion 40a, and by changing the roller portion having a different outer diameter, the clearance between the upper roller 41 and the lower roller 42 is adjusted so that a tape-shaped material having a different thickness is provided. It is made to be able to correspond to.

The mounting bracket 44 is provided with three or more engaging portions 44a for engaging the lower end of the support bracket 43 and fixing them with screws, so that the punch unit 31 and the camera unit 70 can be increased or decreased. Drilling machine 3 by
0 and the width of the camera unit 70 is variable,
The support bracket 43 is selectively engaged with the plurality of engagement portions 44a so that each of the guide rollers 40, 40 on the feeding side and the winding side can be brought closer to the punch 30. The width of the forty in the X-axis direction can be adjusted.

Incidentally, a roller (not shown) configured similarly to the guide roller 40 may be added to the tip of the guide roller 40. In this case, the tape-like material is attached and detached by attaching and detaching the added roller. 100
The length of the guide roller 40 can be adjusted according to the width dimension of the guide roller 40.

The fixed clamp 80 is configured to clamp the tape-shaped material 100 from above and below.
2 on a pedestal 81 fixed on the machine base 1,
It is provided so that the position in the X-axis direction can be changed through a. Therefore, the fixed clamp 80 can make the fixed clamper 82 approach the drilling machine 30 as much as possible according to the increase and decrease of the punch unit 31. Further, the movable clamp 90 clamps the tape-like material 100 from above and below similarly to the fixed clamp 80, and further comprises a movable clamper 92 configured to be controllably movable in the X-axis direction on a pedestal 91 fixed to the machine base 1. It is provided in.

Thus, according to the punching device having the above-described configuration, the tape-shaped material 100 is fed out by the feeding mechanism 10 and moves between the movable clamper 92 of the movable clamp 90 and the upper and lower portions of the guide roller 40 on the feeding side. The carry-in space 72 of the camera unit 70, the carry-in space 32 of each punch unit 31,
While being wound by the winding mechanism 20 while sequentially passing between the upper and lower portions of the guide roller 40 on the winding side and the upper and lower portions of the fixed clamper 82 of the fixed clamp 80, the punching area 101 (the portion to be punched) is moved relative to the punching machine 30. It is sent to make a fixed amount. Each time, the tape-shaped material 100 is clamped by the fixed clamper 82 and the movable clamper 92, and the movable clamper 92 moves in a direction opposite to the fixed clamp 80.

Therefore, during the transportation of the tape-like material 100,
Since the guide rollers 40, 40 on the feeding side and the winding side sandwich the tape-shaped material 100 from above and below in the vicinity of the punching machine, "deflection" of the tape-shaped material 100 in the Y-axis direction is eliminated. Moreover, the “flexure” in the X-axis direction is also eliminated by the fixed clamp 80 and the movable clamp 90.
In addition, since the guide roller 40 freely rotates while sandwiching the tape-shaped material 100, the guide roller 40 is required for the tape-shaped material 100 while the tape-shaped material 100 is being transported or the punching machine 30 and the camera unit 70 are moving. No more tension is applied.

When the tape-shaped object 100 is narrower than the length of the guide roller 40, the tape-shaped object 1
Since only the roller portion 40b that is in contact with 00 rotates, the rotation resistance can be reduced as compared with the case where a roller portion having the same length as the shaft portion 40a is provided. In addition, since the guide roller 40 is made of a conductive material, the static electricity of the tape-like material 100 is released to the machine base 1, so that “deflection” caused by the static electricity of the tape-like material 100 is eliminated. It is also possible to prevent foreign matter from adhering to the tape-shaped material 100 due to static electricity. Also, the guide roller 40
Is provided in the vicinity of the punch 30, so that when the punch 30 moves in the Y-axis direction, the surface of the tape-shaped material 100 and the die 3
Even if the tape-shaped material 100 is shaken in the Y-axis direction due to friction with the surface 1c, as compared with the conventional punching device without the guide roller 40 shown in FIG. As shown in ()), the swing width H can be kept small. Therefore, the punching device according to the present embodiment can perform high-precision punching in a predetermined punching pattern every time the tape-shaped material 100 is fed in a fixed amount.

Since the movable clamp 90 is disposed on the opposite side of the punch 30 from the camera unit 70, the number of the punch units 31 is increased to increase the number of the punches 30.
Does not interfere with the increased number of punch units 31. Therefore, the guide roller 40 on the camera unit 70 side is omitted, and the movable clamp 90 is arranged as close to the drilling machine 30 as possible, and the movable clamp 90 and the guide roller 40 on the winding side are operated in cooperation with each other. You may comprise so that "flexure" of an axial direction may be eliminated. In this case, both the “flexure” in the X-axis direction and the “flexure” in the Y-axis direction can be eliminated with a simpler structure.

[0022]

Since the present invention is configured as described above, it has the following effects. (Claim 1) Since the "deflection" in the Y-axis direction of the tape-shaped material is eliminated by the guide roller,
When moving in the axial direction, the end of the bent tape-shaped object is caught on the end of the die, and the tape-shaped object is shaken in the Y-axis direction, or the tape-shaped object whose die surface is bent is locally moved. Rubbing the tape can prevent the tape from being damaged. In addition, when the punch or the stripper provided around the tip of the punch is lowered, the tape-shaped object shifts in the Y-axis direction so as to escape from the punch or the stripper. Also, the problem that the CCD camera that captures the reference mark becomes out of focus can be solved. In addition, since the guide roller moves in the X-axis direction together with the moving table of the X-axis moving mechanism, the guide roller is always located near the drilling machine. It can be kept flat in the Y-axis direction. In addition, when the punching machine moves in the X-axis direction or when the tape-shaped material is fed in a fixed amount, the guide roller freely rotates while sandwiching the tape-shaped material. There is no need to apply excessive tension. Therefore, a tape-shaped object punching device that performs high-precision punching in a predetermined punching pattern can be provided by keeping the target portion of the tape-shaped object to be flat in the Y-axis direction. (Claim 2) Moreover, the interval between both of the guide rollers is
If the punch unit and camera unit can be adjusted in accordance with the width in the X-axis direction, the guide roller can be moved as close as possible to the punch, and the tape The object to be pierced can be kept flat in the Y-axis direction,
High-precision perforation can be performed irrespective of the number of punch units and camera units. (Claim 3) Further, by providing the fixed clamp and the movable clamp, the "deflection" in the X-axis direction in the perforated area is eliminated, so that the tape-like material can be held flat in the X-axis direction. High-precision drilling can be performed. (Claim 4) Further, in the tape punching device according to claim 3, the clamp on the camera unit side can be arranged near the punching machine regardless of the increase or decrease of the punch unit. Therefore, the guide roller on the camera unit side is omitted, and the clamp on the camera unit side acts in the same manner as the guide roller, so that "deflection" in the Y-axis direction can be eliminated, and the perforation device has a simpler structure. be able to. Note that the two clamps cooperate to form the X
It goes without saying that the "flexure" in the axial direction is also eliminated. (Claim 5) Moreover, since the guide roller is constituted by the shaft portion and the plurality of roller portions rotatably inserted through the shaft portion, only the roller portion in contact with the tape-like material rotates. Therefore, irrespective of the width of the tape, the rotational resistance of the roller can be minimized, so that the tape can be prevented from being unnecessarily tensioned in the X-axis direction. (Claim 6) In addition, since the guide roller is made of a conductive material, the static electricity of the tape-like material is removed, so that the "deflection" of the tape-like material caused by the static electricity is eliminated, and more accurate perforation is performed. In addition to making it possible, it is also possible to prevent foreign matter and the like from adhering to the tape-shaped material.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a tape-shaped punching device according to the present invention.

FIG. 2 is an enlarged perspective view of a main part of the punching device.

FIG. 3 is a side view showing a guide roller in the punching device, which is partially cut away.

FIG. 4 is a top view for comparatively explaining the operation of a guide roller in the punching device. FIG. 4 (a) shows a conventional tape-shaped punching device without a guide roller, in which the tape-shaped object is shaken in the Y-axis direction. (B) In the tape-shaped object punching device according to the present invention, the tape-shaped object is shaken in the Y-axis direction.

FIG. 5 is a side view showing a state in which a tape-shaped object is bent in a conventional punching device.

[Explanation of symbols]

10: Feeding mechanism 20: Winding mechanism
30: punching machine 31: punch unit 31a: punch
31b: Stripper 31c: Die 40: Guide roller
40a: Shaft 40b: Roller 50: X-axis moving mechanism
51: Moving table 60: Y-axis moving mechanism 70: Camera unit
80: fixed clamp 90: movable clamp 100: tape
101: drilling area

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 3C021 CB02 CB08 DA03 DA07 DA13 DA16 EA07

Claims (6)

[Claims] A plurality of punch units each having a punch and a die corresponding thereto are provided between a feeding mechanism for feeding a tape-shaped material from a raw material roll in the X-axis direction and a winding mechanism for winding the same. X by the moving mechanism and the Y-axis moving mechanism
In a punching device including a punching machine controlled and moved in the axial direction and the Y-axis direction, and a camera unit arranged side by side with the drilling machine, the tape is provided on each of a feeding side and a winding side near the punching machine. A pair of upper and lower guide rollers that are rotatable while sandwiching the object from above and below are provided so as to move in the X-axis direction together with the moving table of the X-axis moving mechanism. . 2. The tape-like object according to claim 1, wherein the guide roller is provided so that the interval between the guide roller and the camera unit can be adjusted according to the width in the X-axis direction. Perforator. 3. A fixed clamp and a movable clamp for clamping the tape-shaped object are disposed so as to sandwich the guide rollers on the feeding side and the winding side, and the movable clamp is movable in the X-axis direction. 3. The tape-piercing device according to claim 1, wherein the tape-like material is finely moved in a direction opposite to the fixed clamp when the tape-like material is clamped by both clamps, and is fixed at the fine movement position. . 4. The tape-piercing device according to claim 3, wherein the guide roller on the camera unit side is omitted. 5. The guide roller includes a shaft portion having one end fixed to a moving table of the X-axis moving mechanism, and a plurality of roller portions rotatably inserted through the shaft portion. The perforating apparatus for a tape-shaped object according to any one of claims 1 to 4, wherein: 6. The tape-piercing device according to claim 1, wherein the guide roller is made of a conductive material for removing static electricity of the tape-shaped material.