JP2001038682A - Tape-like article punching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a punching device to punch sprocket holes and product holes by reducing the punching reaction applied to a punch. SOLUTION: In this device, a desired sprocket hole H punched by a first punch die is centered by a first centering camera D every time a tape-like article B is quantitatively fed from a delivery mechanism. The data is fed back, and the quantitative intermittent feed of the tape-like article is maintained at a specified value, and a second punch die is corrective-moved in the X and Y axial directions by the centering data by the reference hole T by a second centering camera E to punch a product hole Z at a specified position of a working area.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape punching unit, and more particularly, to a TAB (Tab) in a semiconductor device.
ape Automated Bonding) and TC
P (Tape Carrier Package) T-
BGA (Tape Ball Grid Array),
T-CSP (Tape Chip Size Pack)
Age), BGA (Ball Grid)
Array), CSP (Chip Size Pac)
The present invention relates to a perforation device for a flexible sheet such as kage) or a tape-shaped object such as a ceramic green sheet.

[0002]

2. Description of the Related Art Since a tape of this type relies on a sprocket system for feeding at the time of printing with a printing machine, cutting, lamination, mounting of chips, etc. Drill sprocket holes. This sprocket hole is pierced by installing a die for piercing the sprocket hole between a feeding mechanism (feeding roll) for supporting a roll of tape-like material and a winding mechanism (feeding roll). With the intermittent feed, the perforation mold is used to perforate the rows at equal intervals, such as at both edges in the width direction. And, the perforation of the product hole in the product processing area between the sprockets is performed by transferring to a dedicated machine. For this reason, two types of dedicated machines are required, so that the equipment cost rises, and the transfer work between apparatuses becomes troublesome.

[0003] In order to solve this problem, a perforation die for manufacturing a sprocket hole and a product hole at the same time is manufactured, and the perforation die is set between a feeding mechanism and a winding mechanism. A method is proposed. By the way, especially in TAB, TCP, BGA, and CSP, the wiring density tends to increase year by year, and the punching process for punching as many as several hundred holes in a required product processing area with a minimum size of several tens of μm has become mainstream. Is occupying. Therefore, if the sprocket hole and the product hole are to be punched at once, a very high punch reaction force acts on all the fine punches, and the punch for the product hole is particularly broken due to the balance between the punching pressure and the punch diameter. There is a risk of doing so. In addition, there is a problem that the perforation pressure of the sprocket hole and the perforation pressure of the product hole temporarily concentrate in a required area, and the tape-shaped material is deformed and deformed.
If the punch breaks, it is necessary to disassemble the punching die provided with the punch for the sprocket hole and the punch for the product hole to replace the punch, which requires troublesome and complicated work. Furthermore, due to friction with a punching die or the like, the tape-shaped object moves parallel to the Y-axis direction (a direction orthogonal to the feeding direction),
Similarly, the tape-like material may move parallel (move in the Y-axis direction) due to a slight difference in frictional resistance between the feed roller, the feeding mechanism (feeding roll), and the winding mechanism (winding roll). In this case, an edge detecting means as shown in Japanese Patent Application Laid-Open Nos. 10-180691 and 10-80692 is disposed above both sides (above both longitudinal edges of the tape-like material), and the output of the edge detecting means is provided. The feed-out mechanism and the take-up mechanism are simultaneously controlled in the plus or minus direction (Y-axis direction) by a signal to correct them. However, in order to control and operate the feeding mechanism and the winding mechanism themselves, a drive source is required, and the apparatus is large-scale, which causes a rise in equipment costs.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to reduce a reaction force acting on a punch to form a sprocket hole and a product hole. An object of the present invention is to provide a punching device. It is another object of the present invention to provide a punching device that performs a high-precision punching by providing a means for correcting the feed amount of a tape-shaped object. Another object of the present invention is to provide a perforation apparatus having a simple structure for correcting a displacement in a Y-axis direction orthogonal to a tape-like material feeding direction (X-axis direction).

[0005]

As a technical measure taken to solve the above-mentioned object, a first aspect of the present invention is to provide a tape-like material for punching a sprocket hole and a product hole having a required drilling pattern in the tape-like material. A first punch die for punching a sprocket hole in a tape-like material between a feeding mechanism for feeding a material roll of a tape-like material and a winding mechanism for winding the same; A second punch die for punching a product hole of the pattern is sequentially arranged from the upstream side, and fixed to the first punch die on the downstream side with respect to a punch shaft serving as a reference of the first punch die. The first centering camera is supported at an appropriate distance, and the feed amount of the tape-shaped object can be corrected based on the centering data of the reference hole by the first centering camera. Support the centering camera and center the reference hole It is summarized as that to have the same second punch correction rotatably controlled in X · Y-axis direction with the data. This quantitative feed amount correction by centering the tape-like object controls a pinch roller (corresponding to a pair of upper and lower feed rollers in the present application) provided between the feeding mechanism and the first punch die. Here, the reference hole centered by the second centering camera is a sprocket hole centered by the first centering camera, and is simultaneously drilled when the sprocket hole is bored by the first punch die. And a dedicated reference hole. In either case, the second punch die is set at a position to accommodate the reference hole that is quantitatively intermittently fed within the field of view of the second centering camera. Further, the tape-shaped material may be a wide-width tape for multiple-choice processing in which a plurality of rows of processing areas can be secured in parallel in the longitudinal direction. In this case, the drilling positions of the sprocket holes are in the vicinity of both longitudinal edges of the sprocket holes and in the belt-like portion between the parallel processing areas. Furthermore, in the first punching die according to the first aspect of the present invention, in the first die having the die, the tape guiding portion is provided only on the upstream side or on the downstream side by using the space between the second die and the second die. It is more preferable that the tape guide portion is formed so as to wrap and guide the portion from the lower surface to both longitudinal edges of the tape-shaped material.

(Operation) According to the above technical means, the following operation is achieved. (Claim 1) Each time a tape-shaped material is quantitatively fed from a feeding mechanism, a sprocket hole or a dedicated reference hole punched by a first punch die is centered by a first centering camera, and the data is fed back. Then, the quantitative intermittent feed amount of the tape-shaped object is maintained at a predetermined value, and a product hole is formed at a predetermined position in the processing area by centering data by a sprocket hole or a dedicated reference hole in the second centering camera. (Claim 2) A tape guide portion provided integrally with the fixed die, and orthogonal to the normal feed direction (X-axis direction) (Y
The displacement of the tape-shaped object in the direction of the axial direction) is prevented.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 5 show an embodiment of a tape-shaped punching device according to the present invention, and reference numeral A denotes the punching device. In the present embodiment, a punching device in which a first punch mold punches a dedicated reference hole together with a sprocket hole will be described in detail.

As shown in FIG. 1, a punching device A has a sprocket hole H and a reference hole T on a tape B on a mounting surface which is an upper surface of a machine base A1 between a feeding mechanism 1 and a winding mechanism 2. A first punch die 3 for punching and a second punch die 4 for punching a product hole Z of a required drilling pattern are further installed downstream thereof, and a machine base A1 downstream of the feeding mechanism 1 is installed.
Tension rollers 5, 5 are guided on the side surface and the side of the machine stand A1 upstream of the winding mechanism 2 so as to be able to move up and down, respectively, and the tape-shaped material B supported on the rotating shaft 11 of the feeding mechanism 1 is provided.
The free end of the material roll is wound around the rotary shaft 12 of the winding mechanism 2 via the tension roller 5 on the upstream side, the first punch die 3, the second punch die 4, and the tension roller 5 on the downstream side. It is configured.

Both the feeding mechanism 1 and the winding mechanism 2 are directly connected to the rotating shafts 11 and 12 to a drive source C which can be electrically controlled such as a servomotor.

The first punch mold 3 is provided with a side view U
The movable die 13 is provided in the upper half of the punching unit 33 having a U-shape, and the fixed die 23 is provided in the lower half thereof.
23, a punching portion 3 'is formed, and tape guide portions 6, 6 are horizontally extended from the fixed mold 23 in the X-axis direction which is the feed direction of the tape-shaped material B, and the tape guide portion on the upstream side thereof. 6
And a pair of upper and lower feed rollers 7, 7 provided.

The movable die 13 has a well-known structure in which a punch supporting portion 13a is connected to a driving shaft of a servo motor serving as a driving source C. The punch supporting portion 13a has a packing plate 13a-1, a punch A pad 13a-2, a punch holder 13a-3, a repelling and repelling strip 13a-4, etc., a packing plate 13a-1 and a punch pad 1
3a-2 holds the punch 8, and the punch pad 13
An elastic repelling strip 13a-4 is interposed between a-2 and a punch holder 13a-3 having an insertion hole 18 of the punch 8 (see FIG. 3).

The fixed die 23 comprises a die holder 23a and a die pad 23b having a die 9 in the lower half of the punching unit 33 and facing the punch 8, and the die holder 23a is a guide pin (not shown). The die pad 23b is connected to the die pad 23b, and is bolted to the lower half of the punching unit 33 (see FIG. 3).

The tape guide 6 is provided with the die holder 23.
a and a sliding contact plate portion 16 extending integrally or integrally in the X-axis direction as described above to the upstream side and the downstream side, with which the lower surface of the tape-shaped material B contacts as shown in the figure. And an enclosing portion 26 integrally extending from the plate portion 16 and enclosing and guiding both longitudinal edge portions of the tape-shaped material B.
The upper surface of the sliding contact plate 16 has the same height level as the upper surface of the die 9. The extension length of the sliding contact plate portion 16 on the upstream side is preferably long, and in the present embodiment, the machine base A1
Of the guide portion 10 provided above the tension roller 3 on the upstream side on the side surface of the upper portion, the length thereof is extended to a length at which the tip comes into contact with the tip of the curved guide portion 10. The guide portion 10 has a structure in which a surrounding portion 10b surrounding both longitudinal edges of the tape-shaped object B is bent from a curved sliding contact surface 10a which is in sliding contact with the lower surface of the tape-shaped object B. The tape guide 6
May have a structure that rises integrally or integrally upward from the lower half of the punching unit 33 or the die pad 23b and then extends horizontally. still,
In the present embodiment, the guide portion 10 is also provided above the tension roller 5 on the downstream side.

In the present embodiment, a perforating device A for perforating a sprocket hole H and a product hole Z in a wide tape-like material which is to be cut into two pieces in a cutting process as a subsequent process from the tape-like material B.
The first punch 3 has punches 8 for punching the sprocket holes H in four rows in the vicinity of both longitudinal edges and the intermediate strip, and a reference hole (a reference hole for a product hole). And) a punch for T (not shown). In the present embodiment, the punch 8 for punching the sprocket holes H has a predetermined pitch so that three sprocket holes H are collectively punched for each row, and a total of 1
Two are held. Of course, this punch 8 is 1 for each row.
It is good even if it is individual, and it does not matter even more, and when the tape-like material B is wider such as a large number of
Naturally, it will be 12 or more.

The upstream tape-shaped material B is provided with a pair of upper and lower feed rollers 7, 7 for sandwiching the tape-shaped material B from the vertical direction and intermittently feeding the tape-shaped material B to the perforated portion 3 '.

As shown in FIG. 3, the upper feed roller 7 is provided with surrounding portions 26, 2 in the middle of the tape guide portion 6 on the upstream side.
6 are rotatably mounted on the horizontal arms 27a, 27a of the U-shaped arms 27, 27 rotatably mounted on the upper halves of the support plates 17, 17 fixed to both sides of the support plate 17, respectively. The compression arm 27d interposed between a concave portion 27c provided at the lower end of the continuous portion of the horizontal arm portion 27a and the vertical arm portion 27b and the upper surface of the surrounding portion 26 receives the elastic force of the compression spring 27d to form a tape. The upper surface of the object B is pressed. The V-shaped arms 27, 27 are connected by connecting rods 27e spanning the two vertical arms 27b, 27b, and the compression springs 27d,
The upper feed roller 7 presses the upper surface of the tape-shaped material B together with the elasticity of 27d. On the other hand, the lower feed roller 7 is mounted on a rotating shaft 27f provided on the lower half of the support plates 17, 17 so as to correspond to the upper feed roller 7 as shown in FIG. An electrically controllable driving source such as a servomotor or the like supported by the lower half of the support plate 17 with a part thereof coming into contact with the lower surface of the tape-shaped material B through a window hole 16 a opened in the portion 16. It is designed to rotate at C. Therefore, the tape-shaped material B can be sent to the first punch die 3 while being sandwiched by the pair of upper and lower feed rollers 7.

The pair of upper and lower feed rollers 7, 7
Are arranged so as to sandwich the perforated portion of the sprocket hole H excluding the processing area W and the vicinity thereof.
The processing area W is an area where printing is performed in advance or an area where the product hole Z is formed.

As shown in FIG. 5, one or both of the pair of upper and lower feed rollers 7, 7 has its roller surface 7 '.
Knurling, flattening, iris, checking, and the like are engraved on the surface, or the surface is roughened to have a rough surface, so that high-precision feeding without slip is performed.

Further, a first centering camera D is supported by the punching unit 33 at an integral multiple of the distance between punches with respect to a reference punch axis, and a sprocket hole H to be bored is centered. The drive source C of the feed roller 7 is controlled based on the centering data to control the intermittent rotation amount of the feed roller 7, that is, the feed amount.

The second punch die 4 is installed with a predetermined offset amount (fixed separation distance) from the first punch die 3 and is installed. The structure is basically the same as that of the first punch die 3 except that the number is large, the centering camera is built in, and the correction movement is possible in the X and Y axis directions. Has become.

The centering camera (hereinafter, referred to as a second centering camera) is E. Although not described in detail, the upper half of the punching unit 43 above the packing plate 14a-1 is fixed, and the packing plate 14a- 1. An image can be taken through a hole (not shown) opened in communication with the punch pad 14a-2 and the punch holder 14a-3 (see FIG. 2).

Therefore, the reference hole T of the tape-shaped material B sent after the sprocket hole H is punched by the first punch die 3 is centered by the second centering camera E, and only the centering error is detected. After the second punch die 4 is corrected and moved in the X and Y axis directions, the movable die 14 of the second punch die 4 descends, and the product hole Z is punched with the fixed die 24 based on the reference hole T. can do. As the correction means in the X and Y axis directions, a conventionally well-known ball screw mechanism is employed.

Incidentally, the tape guide section 6 on the downstream side is
The punching unit 3 has an appropriate length that does not collide when the punching die 4 is maximally corrected and moved in the X and Y axis directions.
3 extends downstream. It is a matter of course that the pair of upper and lower feed rollers 7, 7 may be disposed on the tape guide portion 6.

The linear guides 25, 25 for vertically moving the tension rollers 5, 5 are moved up and down.
When the position sensors F1 and F2 are provided, and the support portions 15 and 15 of the tension rollers 5 and 5 are detected by the upper position sensor F1, the feeding of the feeding mechanism 1 and the winding of the winding mechanism 2 are started. , Lower position sensor F2
When the detection is made, feeding and winding are stopped (see FIG. 1).

The tape-shaped material punching apparatus A constructed as described above sandwiches the tape-shaped material B between a pair of upper and lower feed rollers 7, 7 and uses the frictional force of the rough roller surface 7 '. The tape-shaped material B is intermittently fed between the fixed die 23 and the movable die 13 of the first punch die 3 with the linear guideability of the tape guide portions 6, 6. Perforate. When the sprocket hole H and the reference hole T are formed, the tape-shaped material B is tensioned by the pair of upper and lower feed rollers 7, 7 and the tension roller 5 on the downstream side. Then, the sprocket hole H is aligned with the first centering camera D
To adjust the intermittent rotation amount of the feed rollers 7, 7. Then, the reference hole T is centered by the second centering camera E by the second punching die 4, and the second punching die 4 is corrected and moved in the X and Y axis directions by the centering data, and the machining area is adjusted. A product hole Z is formed for each W.

Reference numeral 100 denotes a clamper provided on the downstream side of the second punch die 4, and a pair of upper and lower clamp bodies 1 which are controlled so that the tape-shaped material B can be vertically approached and separated.
01, 101 and a pair of upper and lower clamp bodies 101, 1
A guide body 102 erected from the installation surface of the machine base A1 so as to guide the lower part 01 to the downstream side, and a pair of upper and lower clamp bodies 1
An actuator such as an air cylinder for finely moving the first and the first 101 in the X-axis direction is provided. The tape B is held between the fixed die 23 and the movable die 13 of the first punch die 3. A pair of upper and lower clamp bodies 1 approaching each other
The tape B is clamped at 01, 101 and slightly moved downstream to apply tension to the tape-shaped material B to eliminate slack, etc., and to correct and process the second punch die 4 in the X and Y axis directions in that state. A product hole Z is formed for each area W. By doing so, the lower surface of the tape-shaped material B and the fixed die 2 during the correction movement of the second punch die 4 are adjusted.
4 and the first punch 3 and the clamper 100
The portion between the tape-shaped material B and the product hole perforation target portion between them does not swing, and a perforation error does not occur. Also,
Disposed downstream of the clamper 100 is a hall counter 200, that is, a hall inspection machine.

[0027]

As described above, the present invention has the following advantages. (Claim 1) Since a sprocket hole is first drilled with a first punch die provided between a feeding mechanism and a winding mechanism, and a product hole is subsequently drilled with a second punch die. The punch reaction force acting on the punch is reduced compared to the case where the sprocket hole and the product hole are punched at once,
When punching product holes with high density on today's TAB and TCP tapes, PGA, BGA, CSP, etc. flexible substrates and ceramic green sheets, etc. tapes where the fineness of punches progresses. This is a kindly designed punching device that takes breakage prevention into consideration. Also, in the case where a fine-diameter punch for product hole drilling (for product hole) is broken due to long-term use and must be replaced, it is sufficient to disassemble only the second punch mold and take measures. When the mold is repaired by accident, only the second punch mold needs to be repaired, which is easy to deal with. Moreover,
Sprocket hole drilled by the first punch die, second
The product hole drilled by the punch die is centered and the drilling position is finely adjusted, and then the sprocket hole and the product hole are individually drilled with a time lag, so that a high drilling force can be simultaneously applied to the required area. Synergistically, it prevents concentration and prevents the tape from being distorted and deformed.
High precision drilling can be promised. (Claim 2) In addition, the displacement of the tape-shaped material (in the Y-axis direction) can be achieved without causing a large increase in equipment cost due to the large-scale operation in which the feeding mechanism and the winding mechanism are controlled and driven by the drive source.
Can be prevented.

[Brief description of the drawings]

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

FIG. 2 is an enlarged perspective view of a main part showing a relationship between a first punching die, a second punching die, a tape guide, a first centering camera, a second centering camera, and a tape-shaped object.

FIG. 3 is an enlarged sectional view showing a feed roller and a first punch die.

FIG. 4 shows a first punch die, a second punch die, a first and a second die.
FIG. 3 is a cross-sectional plan view showing the relationship among a centering camera, a sprocket hole of a tape-shaped object, a processing area, and a product hole.

FIG. 5 is a perspective view of a feed roller. (A) is the case where the roller surface is surface-treated, (b) is the case of knurl, (c)
Indicates the case of a streak.

[Explanation of symbols]

A: punching device B: tape-like object H: sprocket hole Z: product hole 1: feeding mechanism 2: winding mechanism 3: first punch die 4: second punch die D: first centering camera E: first 2 centering camera 8: Punch 9: Die 6: Tape guide T: Reference hole

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3C060 AA04 AB01 BA01 BD01 BE08 BG13 BG18 BH02

Claims (2)

[Claims] 1. An apparatus for punching a tape-shaped object, wherein a sprocket hole and a product hole having a required punching pattern are formed in the tape-shaped object. A first punching die for punching a sprocket hole in the tape-like material, and a second punching die for punching a product hole having a required punching pattern are sequentially arranged from the upstream side with the winding mechanism; A first centering camera is supported downstream of the first punching mold at a fixed distance from a punch axis serving as a reference of the first punching mold, and a reference hole formed by the first centering camera is provided. The feed amount of the tape-shaped object can be corrected by using the centering data of the second punching die, the second punching die is supported by the second centering camera, and the centering data of the reference hole is set to X · It is controlled so that it can be corrected in the Y axis direction. An apparatus for punching a tape-shaped object. 2. A tape guide portion is integrally formed on the fixed die provided with a die in the first punching die, using only the upstream side or the gap between the second punching die and the downstream side. 2. The tape punching device according to claim 1, wherein the tape guide portion is extended, and the tape guide portion is configured to wrap and guide a portion from the lower surface to both longitudinal edges of the tape-shaped material.