JP2861822B2 - Anisotropic conductor supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supplying an anisotropic conductor.

[0002]

2. Description of the Related Art In recent years, TCP (Tape Carrier) has been developed.
2. Description of the Related Art Anisotropic conductors have been used to mount electronic components such as rpackage) on electrodes of a substrate such as a liquid crystal panel. This anisotropic conductor is attached to one side of a thin tape called a leader tape, and supplied in a state of being wound around a reel together with the leader tape. A step of attaching the surface on which the conductor is attached to the electrode of the substrate, and then peeling off only the leader tape, leaving only the anisotropic conductor on the electrode of the substrate is performed.

[0003] The leader tape is generally formed to be thin and easy to stretch. Also, in order to apply the anisotropic conductor evenly and evenly, the leader tape is given a small tension as much as possible. Must be maintained.

Here, conventionally, a tension has been applied to the leader tape using a torque limiter mounted on a shaft holding the reel.

[0005]

However, such a mechanism has a problem that it is difficult to apply a small tension, and it is difficult to make fine adjustments.

Accordingly, the present invention provides an apparatus for supplying an anisotropic conductor that can stably supply an anisotropic conductor by applying a small tension and that can perform fine tension adjustment. The purpose is to provide.

[0007]

According to the present invention, there is provided an apparatus for supplying an anisotropic conductor, comprising: a reel on which a leader tape having an anisotropic conductor adhered to one surface is wound; Guide means for guiding the travel of the leader tape in contact with the surface, a suction body having a depth capable of sucking the leader tape traveling and guided by the guide means from the other surface side, and sucking air in the suction body A suction means, a tape position detection means for detecting a position of the leader tape sucked into the suction body, and a control means for controlling a feeding amount of the leader tape according to the position of the leader tape detected by the tape position detection means. ing.

[0008]

With the above construction, the leader tape is drawn into the suction body by the suction force of the suction means, and a small tension is applied to the leader tape by the suction force.
Here, the tension can be finely adjusted by adjusting the suction force by the suction force adjusting means, and therefore, the tension applied to the leader tape can be finely adjusted.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an overall configuration diagram of an apparatus for supplying an anisotropic conductor according to an embodiment of the present invention. In FIG.
1 is a substrate positioning stage for horizontally positioning the substrate 2, 3 is a pressure bonding mechanism for pressing the anisotropic conductor 5 against the substrate 2 and pressing, and 4 is a tape-shaped anisotropic tape on one surface (the lower surface in this embodiment). This is a leader tape to which the conductive material 5 is adhered. Note that the anisotropic conductor 5 is not attached to the leading portion of the leader tape 4.

Reference numeral 6 denotes a cassette detachably mounted on a base body B provided upstream of the leader tape 4. The cassette 6 accommodates the leader tape 4 in a wound state, The leader tape 4 is led out to the right in FIG. 1 through the space between the pressure bonding mechanism 3 and the substrate 2. Reference numeral 7 denotes a tape transport mechanism that winds the leader tape 4 that has passed between the pressure bonding mechanism 3 and the substrate 2, and 8 guides the leader tape 4 by being in contact with the leader tape 4 and moves to the left in FIG. A pair of guide rollers 8a and 8b for peeling the leader tape 4 from the anisotropic conductor 5 attached to the substrate 2.
This is a leader tape peeling mechanism 8 having: Reference numeral 9 denotes a cutter that rises and cuts only the anisotropic conductor 5 at right angles to the feeding direction.

FIG. 2 is a front view of a cassette according to an embodiment of the present invention. In FIG. 2, reference numeral 10 denotes a plate-shaped cassette main body for holding the following members, 11 denotes a disk-shaped reel mounting plate rotatably supported by the cassette main body 10,
Reference numeral 12 denotes a reel holder fixed to the reel mounting plate 11 coaxially with the reel mounting plate 11, reference numeral 13 is supported by the reel holder 12 so as to rotate integrally with the reel mounting plate 11, and the leader tape 4 is wound around the reel holder. It is a reel that has been turned.

Next, guide means for the leader tape 4 will be described. Leader tape 4 has guide rollers 14 to 19
And is guided by the guide member 20, and is fed out in the arrow N1 direction. Here, reference numeral 20a denotes a suction block which suctions the leader tape 4 immediately upstream of the guide member 20 and imparts running resistance. Here, the anisotropic conductor 5 is exposed on the outside of the leader tape 4 but not on the inside (that is, the surface in contact with the guide rollers 14 to 19). That is, since the anisotropic conductor 5 drawn out of the reel 13 does not come into contact with the substrate 2 until it is press-bonded to the substrate 2, the surface of the anisotropic conductor 5 is not stained and the press-bonding failure does not occur.

Reference numeral 21 denotes a tubular suction body which is provided below the guide rollers 15 and 16 and has an open upper end and is formed to be elongated. The suction body 21 is made of a transparent or translucent member (for example, a synthetic resin), and is configured so that the inside can be visually recognized and sensed. A pipe 2 is provided at the bottom of the suction body 21.
2 is connected, and communicates a hole 22 a formed in the cassette body 10 with the suction body 21. This hole 22a
3 is connected to the suction device 51 via a hole 65 opened in the base body B and a suction force adjusting valve 50 connected to the hole 65 as shown in FIGS. That is, the leader tape 4 between the guide rollers 15 and 16
Is a bear having a certain tension, which is attracted to the bottom side of the suction body 21 and has a certain tension by the suction force set by the suction force adjusting valve 50, and hangs down in a U-shape. The suction force of the suction force adjusting valve 50 is adjusted by an operator, and, unlike a torque limiter or the like, the tension applied to the leader tape 4 can be finely adjusted. In the present embodiment, the suction force adjusting valve 50 and the suction device 51
Corresponds to a suction unit.

The cassette body 10 is provided with positioning pin insertion holes 25 and 26, clamp claw insertion holes 27, sensor insertion holes 28, 29 and 30, and an opening 31. Reference numeral 32 denotes an arm whose left end is pivotally supported by the cassette main body 10 in a manner swingable in the direction of the arrow N2 by a shaft 33; 34, a tension spring for urging the arm 32 downward;
The lower end of the stopper 32 regulates the lower limit of the arm 32.
A slider 37 slidably engaged with the tip of the slider 36 is an intermediate roller rotatably supported at the tip of the slider 36.

FIG. 3 is a front view of a base body according to an embodiment of the present invention. In FIG. 3, reference numerals 40 and 41 denote positioning pins which are inserted into positioning pin insertion holes 25 and 26 to position the cassette body 10 on the base body B, reference numeral 42 denotes a suction hole communicating with the suction block 20a, and reference numeral 43 denotes a clamp of the cassette body 10. A clamp claw 44 which engages with the claw insertion hole 27 to lock the cassette body 10 to the base body B, and a clamp cylinder 44 whose rod 44a is connected to the clamp claw 43, moves the clamp claw 43 up and down. Next, as a tape position detecting means, a first sensor 45 is provided at a position corresponding to the sensor insertion hole 28 and detects the presence or absence of the leader tape 4 at a shallow position of the suction body 21. When the leader tape 4 is consumed, the first sensor 45
Detects that the leader tape 4 is not present, the leader tape 4 is fed out.
46 is provided at a position corresponding to the sensor insertion hole 29,
This is a second sensor for detecting the presence or absence of the leader tape 4 at a deep position of the suction body 21. When the second sensor 46 detects the presence of the leader tape 4, the above-mentioned feeding operation is stopped. .

Reference numeral 47 denotes a remaining amount detection sensor which is provided at a position corresponding to the sensor insertion hole 30 and monitors whether or not the anisotropic conductor 5 still remains. The light emitting section 47a and the light receiving section 47b are respectively disposed on both sides of the path. Reference numeral 60 denotes a drive roller for applying a rotational force to the reel mounting plate 11 via the intermediate roller 37, and reference numeral 61 denotes a drive motor for transmitting the rotational force to the drive roller 60 via a belt 62. 63
Is a pin that penetrates through the opening 31 at the lower part of the arm 32 and contacts the arm 32 to swing the arm 32, and 64 is an intermediate roller lifting cylinder that raises and lowers the pin 63. The hole 65 is formed with the hole 22a formed in the cassette body 10.
Is formed at the position corresponding to.

FIG. 7 is a block diagram of an apparatus for supplying an anisotropic conductor according to one embodiment of the present invention. In FIG. 7, reference numeral 70 denotes control means for controlling the amount by which the leader tape 4 is fed according to the position of the leader tape 4. Among them, 71 is a control unit including a ROM for storing a tape feeding program for realizing the above-described operation, a CPU for controlling the whole, and the like, 72 is a drive circuit for driving the drive motor 61, and 73 is an intermediate roller push-up cylinder. 64, a cylinder driving unit that drives the clamp cylinder 44; Reference numeral 74 denotes a notification unit that notifies the operator when the remaining amount detection sensor 47 detects that the leader tape 4 is out of stock, and reference numeral 75 denotes that the operator inputs the completion of setting when the cassette body 10 has been mounted. Operating unit such as a keyboard. The clamp cylinder 44 and the intermediate roller lifting cylinder 64 operate after an operation completion input is input to the operation unit 75.

FIG. 4 is a front view showing a state where the cassette main body according to one embodiment of the present invention is mounted on the base body, and FIG. 5 is a front view showing a state where the cassette main body according to one embodiment of the present invention is mounted on the base body. It is. The procedure for mounting the cassette 6 on the base body B will be described below with reference to FIGS. First, the pins 40 and 41 are fitted into the positioning pin insertion holes 25 and 26 of the cassette body 10 to position the base body B, and the cassette body 10 is brought into close contact with the base body B. Next, when the setting completion is input from the operation unit 75, the state shown in FIG. 4 is changed from the state shown in FIG. 4 to the state shown in FIG.
The clamp cylinder 44 is driven to engage the clamp claw 43 with the lower edge of the clamp claw insertion hole 27, and lock the cassette body 10 to the base body B. In addition, as shown in FIG. 6, the suction block 20a is connected to the suction device 51 via the suction hole 42.

When the setting completion is input, the intermediate roller lifting cylinder 64 is driven to raise the pin 63, and the intermediate roller 37 is brought into circumferential contact with both the driving roller 60 and the reel mounting plate 11. Here, when the pin 63 pushes up the arm 32, the slider 36 slides along the arm 32, so that the intermediate roller 37 is securely driven by the drive roller 6.
0, and press against both the reel mounting plate 11. Then, the leading end of the leader tape 4 is separated from the leader tape 4 by a peeling mechanism 8.
And set in the tape transport mechanism 7. The control unit 71 operates the drive motor 61 to draw out the leader tape 4 from the reel 13, and as shown by the solid line in FIG.
When 6 detects the presence of the leader tape 4, the drive motor 61 is stopped. Thereafter, the output of the first sensor 45 is monitored, and the operation is stopped until the leader tape 4 is sequentially fed out and the first sensor 45 no longer detects the presence of the leader tape 4. During this time, as described above, the suction force set by the suction force adjusting valve 50 is applied to the suction body 21 to give the leader tape 4 a delicately controlled tension. Then, when the first sensor 45 stops detecting the presence of the leader tape 4, the second sensor 46 detects the presence of the leader tape 4 in the same manner as described above.
The drive motor 61 is operated until is detected. By the repetition of the above, the leader tape 4 has a U-shaped sag with the position of the chain line in FIG. 5 as the upper limit and the position of the solid line in FIG. 5 as the lower limit.

Next, referring to FIGS. 8 (a), 8 (b) and 8 (c) (operational diagrams of an anisotropic conductor supply device according to an embodiment of the present invention), FIG. The overall operation of the conductive material supply device will be described. First, when the setting of the leader tape 4 is completed, the anisotropic conductor 5
Is pulled out from the cutter 9 and further extended by the length to be adhered to the substrate 2 from the cutter 9, and only the anisotropic conductor 5 is cut as shown in FIG. I do. Next, as shown in FIG. 8B, the entire dashed line portion except for the pressure bonding mechanism 3 and the substrate positioning stage 1 is lowered to bring the cut anisotropic conductor 5 into contact with the substrate 2. Thereafter, the crimping mechanism 3 is operated to crimp the cut anisotropic conductor 5 onto the substrate 2. Then, as shown in FIG. 8C, the leader tape peeling mechanism 8 is moved to the left in FIG.
From the substrate positioning stage 1.

[0022]

According to the present invention, there is provided an apparatus for supplying an anisotropic conductor, wherein a leader tape in which a leader tape having an anisotropic conductor adhered to one surface is wound, and the other surface of the leader tape is in contact with the leader tape. Guide means to guide the running of the leader tape and
A suction body having a depth capable of sucking the leader tape running while being guided by the guide means from the other surface side, a suction means for sucking air in the suction body, and detecting a position of the leader tape sucked into the suction body And a control means for controlling the feed amount of the leader tape in accordance with the position of the leader tape detected by the tape position detection means, so that a small tension can be applied to the leader tape. The supply of the isotropic conductor can be performed stably. Further, fine tension adjustment can be performed by adjusting the suction force by the suction force adjusting means.

Further, since there is no need to worry about soiling the surface of the anisotropic conductor, it is possible to prevent pressure bonding errors. Further, by mounting the reel on the cassette, it is possible to quickly replace the reel.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an apparatus for supplying an anisotropic conductor according to an embodiment of the present invention.

FIG. 2 is a front view of the cassette according to the embodiment of the present invention.

FIG. 3 is a front view of a base body according to the embodiment of the present invention.

FIG. 4 is a front view showing a state where the cassette main body is mounted on the base body in one embodiment of the present invention.

FIG. 5 is a front view showing a state where the cassette main body according to the embodiment of the present invention is mounted on the base body.

FIG. 6 is a sectional view taken along the line AA of FIG. 5;

FIG. 7 is a block diagram of an apparatus for supplying an anisotropic conductor according to an embodiment of the present invention.

FIG. 8A is a diagram illustrating an operation of an apparatus for supplying an anisotropic conductor according to one embodiment of the present invention; FIG. FIG. 4 is a diagram illustrating the operation of the anisotropic conductor supply device according to one embodiment of the present invention.

[Explanation of symbols]

 4 Leader Tape 13 Reel 14 Guide Roller 15 Guide Roller 16 Guide Roller 17 Guide Roller 18 Guide Roller 19 Guide Roller 21 Suction Body 45 First Sensor 46 Second Sensor 51 Suction Device 70 Control Means

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H05K 3/32 H05K 3/36 H05K 1/14

Claims (5)

(57) [Claims] 1. A reel on which a leader tape having an anisotropic conductor adhered to one surface is wound, and guide means for contacting the other surface of the leader tape to guide the travel of the leader tape. A suction body having a depth capable of sucking the leader tape traveling by being guided by the guide means from the other surface side; a suction means for sucking air in the suction body; Tape position detecting means for detecting the position of the leader tape, and control means for controlling the feeding amount of the leader tape in accordance with the position of the leader tape detected by the tape position detecting means. An anisotropic conductor supply device. 2. An apparatus according to claim 1, wherein said suction means includes suction force adjusting means for adjusting a suction force. 3. A first sensor for detecting the presence or absence of the leader tape at a shallow position of the suction body, and a second sensor for detecting the presence or absence of the leader tape at a deep position of the suction body. The supply device for an anisotropic conductor according to claim 1, further comprising: a sensor. 4. The suction body is formed of a transparent or translucent member so as to be visually recognizable from the outside, and the tape position detecting means is disposed outside the suction body. 2. An apparatus for supplying an anisotropic conductor according to claim 1. 5. The apparatus according to claim 1, wherein said suction means and said tape position detecting means are provided on a base body side, and said reel, said guide means and said suction body are provided on a cassette body side detachably mounted on said base body. The supply device for an anisotropic conductor according to claim 1, wherein: