JP3300927B2 - TAB tape feeding mechanism and method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a TAB tape feeding mechanism and a TAB tape feeding mechanism for feeding and positioning a TAB tape by a roller driving method used for a TAB handler, for example.

[0002]

2. Description of the Related Art FIG. 4 shows a TAB handler for transporting a TAB tape to a work and inspection position to process and inspect the TAB tape. In the figure, 1 is a TAB tape, 2 is a work / inspection station, 3 is a driving station, 4 is a back tension station, 5 is a tape guide, 6 is a sprocket, 7 is a pin, 8 is a control device, 9 is a monitor, and 10 is a monitor. Represents the base.

[0003] Insert the pin 7 of the sprocket 6 of the drive station 3 into the sprocket hole of the TAB tape 1,
By driving the sprocket 6 with a motor, the TAB
The tape 1 is conveyed from left to right in the arrow direction t. Back tension station 4 is sprocket 6
As a result, tension is applied to the TAB tape 1 to eliminate looseness. In the sprocket drive system shown in FIG.
A load may be applied to the sprocket hole in the tape feeding direction, and the TAB tape may be damaged.

For this reason, the present inventors have considered a roller drive system as shown in FIG. 5A is a bird's-eye view of the driving station or the back tension station, FIG. 5B is a cross-sectional view, and FIG. 5C shows a main part where the TAB tape 1 and the roller come into contact. 4, reference numeral 11 denotes a driving roller, 12 denotes a soft material ring, 13 denotes a supporting shaft of the driving roller 11, 14 denotes a supporting member, 15 denotes a motor of the driving station 3 or a back tension mechanism of a back tension station, 1
6 is a pressing roller, 17 is a hard material ring (O-ring 1
, 18 denotes a support shaft of the pressing roller 16, and 19 denotes a support member.

[0005] The drive roller 1 is provided via an O-ring 17 made of a hard material and a soft material ring 12 made of a soft material such as rubber.
1 and the pressing roller 16, the TAB tape 1 is sandwiched between the TAB tape 1 and the TAB tape due to friction between the ring of the roller and the TAB tape.
The B tape is fed and positioned. Hereinafter, the same reference numerals in the specification denote the same or corresponding components.

[0006]

The TAB tape 1 is fed six holes by the roller drive system shown in FIG. 5, and a cycle of stopping, inspecting, etc. is repeated.
When work such as inspection of the C chip is performed, the back tension station 4 in FIG.
As shown in (b), the central part of the TAB tape is lifted up, and a folding phenomenon occurs. Although less frequent than the back tension station 4, the driving station 3
Also, the bending phenomenon occurs. When such bending occurs, a force is applied to the IC chip mounted on the TAB tape, which causes problems such as breakage of the lead and breakage of the connection between the electrode of the IC chip and the lead wire. SUMMARY OF THE INVENTION It is an object of the present invention to provide a TAB tape feeding mechanism and a method that do not cause the folding phenomenon that causes such a problem.

[0007]

In order to solve the above problems, a mechanism of the present invention comprises a ring provided at a position in contact with both ends of a TAB tape of a driving roller, and a TAB of a pressing roller.
T between the tape and a ring provided at a position in contact with both edges of the tape.
A mechanism for sandwiching the AB tape, feeding and positioning the TAB tape by friction between the roller ring and the TAB tape, and pressing the TAB tape with a plurality of protrusions in the width direction on the outer surface of the ring in contact with the TAB tape. It consists of. Further, the pressing roller is intermittently raised to make TA
It is preferable to provide a mechanism for temporarily releasing the pressing on the B tape by the ring.

According to the method of the present invention, a TAB tape is sandwiched between a ring provided at a position in contact with both edges of a TAB tape of a driving roller and a ring provided at positions contacting both edges of the TAB tape of a pressing roller. Roller ring and TAB
A TAB tape feeding method is configured to feed the TAB tape by friction of the tape, intermittently raise the pressing roller, and temporarily release the pressing by the ring on the TAB tape.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments shown in FIGS. FIG. 1 is a sectional view of a roller according to the present invention, and FIG. 2 shows a structural example of a hard material ring 21 provided with a pressing roller according to the present invention. In these figures, 16R and 16L are right and left pressing rollers, respectively, and 18R and 18L are pressing rollers 1 respectively.
The support shafts 6R and 16L, 21 represent a hard material ring. The roller shown in FIG. 5 is composed of a hard material ring composed of two O-rings, and separately installed left and right holding rollers,
The difference is that the left and right edges of the tape are controlled to be pressed with different forces.

The hard material ring 21 shown in FIG. 1 is an example in which a ring is composed of two O-rings. By pressing both edges of the TAB tape 1 at predetermined intervals in the width direction by two-line contact, TA
In the B tape, no force acts in the twisting direction, and the tape does not bend. The hard material ring in FIG. 2A has three O-rings, and the hard material ring in FIG. 2B has four corrugated vertices in cross section to form an annular projection 21b. In this case, 4
Press the TAB tape with line contact of the line.

FIG. 2D is a view of the hard ring 21 as viewed from the TAB tape side, and a front cutout of FIG. 2C shows a cross section AA of FIG. 2D. Square projections 21c arranged in the rotation direction of the pressing roller are alternately arranged in four rows on the inner surface of the ring. With this arrangement, the TAB tape is pressed by two lines.

FIG. 2E shows a row of protrusions 21d arranged on the inner surface of the hard material ring of the left pressing roller 16L. The plurality of square protrusions are inclined toward the center of the tape with respect to the driving direction. There is a line at the center of the TAB tape on the right side of the drawing, and the tape is transported in the upper direction t in the drawing. The protrusions arranged on the right roller 16R are symmetric with respect to the arrangement of FIG. The linear pressing of the TAB tape by such a projection generates a force to the outside of the tape, and the center bending phenomenon does not occur.

FIG. 2F shows an example in which a plurality of projections 21e arranged alternately are provided on a hard material ring. The TAB tape is pressed by the two projections. In the rotation direction of the hard material ring, the interval between the protrusions can be widened to create a pressing release period in which the ring does not come into contact with the TAB tape. During this release period, the force acting on the TAB tape in the tape inward direction is released to the outside, eliminating the tendency to break. The release period may be arranged between the left and right hard material rings or may be arranged alternately.

1 and 2 (a), (b),
As in the examples of (d) and (e), in the projection of the hard material ring,
If a release period cannot be created, the pressing roller is intermittently raised for a moment (0.1 second) to set a period during which the TAB tape is not pressed, thereby releasing the force acting on the TAB tape in the tape inward direction to the outside. Thus, the occurrence of the bending phenomenon of the TAB tape can be eliminated. This can be performed by simultaneously shifting the left and right pressing rollers 16R and 16L, or intermittently raising only one of them. FIG.
The release period in which the TAB tape is not pressed can be created by using the arrangement of the projections of the hard material ring 21 and the intermittent rise of the roller in (e). Further, also in the case of one O-ring in FIG. 5, the intermittent rise of the pressing roller is effective in eliminating the occurrence of the center folding.

FIG. 3 shows an example of a pressing roller intermittent raising mechanism. FIG. 7A is a diagram illustrating a state in which the pressing roller presses the TAB tape, and FIG. 7B is a diagram illustrating a state in which the pressing roller is raised and the TAB tape is not pressed. In the figure, 31 is a spring, 32 is a spring pressure adjusting ring, 33
Represents a Stoke restriction pin, and 34 represents a cylinder. T
The pressing of the AB tape is not the thrust of the cylinder 34,
This is performed by the urging force of the spring 31, and the urging force of the spring can be adjusted by a spring adjusting ring.

In the above embodiment, the rings mounted on the pressing roller and the driving roller have been described as a hard material ring and a soft material ring, respectively. Alternatively, the object of the present invention can be achieved by using rings made of the same material. The material of the ring is preferably softer than the material of the TAB tape. The TAB tape feeding mechanism and method for eliminating the occurrence of the folding phenomenon according to the present invention are applied to a TAB feeding apparatus employing a roller driving method such as a driving station and a back tension station in a TAB handler.

[0017]

According to the present invention, since the TAB tape is pressed at two or more points, the TAB tape can be fed without being twisted, so that the center break does not occur. Further, when the pressing of the pressing roller against the TAB tape is intermittently released, T
Since the AB tape has no tendency to be bent, no bending occurs.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining the present invention.

FIG. 2 is a diagram showing a structural example of a holding roller mounting ring of the present invention.

FIG. 3 is a diagram illustrating an example of a pressing roller intermittent raising mechanism according to the present invention.

FIG. 4 is a diagram illustrating a conventional TAB driving method.

FIG. 5 is a diagram illustrating a roller driving method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 TAB tape 3 Drive station 4 Back tension station 11 Drive roller 12 Soft material ring 16R, 16L Holding roller 21 Hard material ring

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01L 21/60

Claims (4)

(57) [Claims] 1. A TA between a driving roller and a pressing roller.
A TAB tape feeding mechanism for sandwiching a B tape and feeding and positioning the TAB tape, comprising two rings provided at portions of the drive roller in contact with both edges of the TAB tape, and a TAB tape of a pressing roller. A plurality of projections are provided on the outer surface of the ring provided on the pressing roller, which is in contact with the TAB tape, in a width direction of the TAB tape; A TAB tape feeding mechanism characterized in that a TAB tape is pressed by a projection. 2. The method according to claim 1, wherein the plurality of protrusions are provided for a predetermined period of time TAB.
2. The TAB feed mechanism according to claim 1, wherein the TAB feed mechanism is arranged at a predetermined interval in the rotation direction of the pressing roller so as not to press the tape. 3. The pressing roller is intermittently raised to make TA
3. The TAB feeding mechanism according to claim 1, further comprising a mechanism for temporarily releasing the pressing of the B tape. 4. A TAB tape is sandwiched between a drive roller provided with a ring at a position in contact with both edges of the TAB tape and a press roller provided with a ring at a position contacting both edges of the TAB tape, and the TAB tape is held. A TAB tape feeding method for feeding and positioning, wherein a pressing roller is intermittently raised to temporarily release pressing of a TAB tape by a ring provided on the pressing roller.