JPS60132856A - Device for transferring and holding film carrier - Google Patents

Abstract

PURPOSE:To enhance the reliability of bonding, by transferring and positioning a film carrier subjected to a predetermined tension, and thereafter, by fixing and holding the film carrier at positions upstream and downstream of a bonding position with the use of fixing members. CONSTITUTION:A tape carrier 1 wound off from a supply reel 2 and wound up onto a wind-up reel 3 is fed at predetermined pitches in the direction A by mean of a feed sprocket 4 while being subjected to a predetermined tension in the direction C by means of a tension sprocket 7. At this stage the carrier 1 is positioned by a positioning pawl 12 which is urged by a resilient member 12 and fitted into a pair of perforations formed at predetermined pitches on both side edges of the carrier. In this condition, by extending cylinders 22, 22a the carrier 1 is clamped and fixed between the bottom surfaces 24, 24a of fixing members 23, 23a and guides 11. Thereafter, a required bonding operation is carried out by lowering a heatseal 16.

Description

DETAILED DESCRIPTION OF THE INVENTION 2. Field of Industrial Application The present invention is directed to a film carrier bonding apparatus.
The present invention relates to a film carrier transport and holding device that transports and holds a film carrier fixedly.

Structure of a conventional example and its problems A method of transporting a film carrier and holding a film carrier at a working position in a conventional film carrier bonding apparatus has a specific structure as shown in FIGS. 1 and 2. 1 is a film carrier, and 21 is a supply reel that winds up the supplied film carrier 1. 3
04 is a take-up reel for winding up the bonded film carrier 1. 04 is a take-up reel provided on both edges of the film carrier 1 at a constant pitch so as to intermittently feed the film carrier 1 at a predetermined pitch in the direction of the arrow. This is a feed sprocket that engages with the perforation hole 6.

A motor 6 is connected to the feed sprocket 4 and rotates the feed sprocket 4 by a predetermined angle in the direction of arrow B.

7 is a tension sprocket that engages with the perforation holes 5 on both edges of the film carrier 1, and 8 is a torque motor that always applies a constant tension to the film carrier 1 in the opposite direction to the feed direction indicated by the arrow. , are connected to the tension sprocket 7 to generate rotational force in the direction of arrow C. 9 and 1o are idler rollers.

11 is the feed sprocket 4 and the tension sprocket 7
It is a guide that supports the film carrier 1 in the working position between. A positioning claw 12 is biased by an elastic body 13, has a wedge-shaped tip 14, and circumscribes the perforation hole Sa to position the film carrier 1 after intermittent feeding. During intermittent feeding of the film carrier 1, the positioning claw 1 is moved by the inclined surface 16 of the wedge-shaped tip 14.
2 runs away in the direction of the arrow. 16 is a heat tool;
It moves up and down in the direction of arrow E to perform the bonding operation. 17
is a semiconductor element, which is held on a stage that moves up and down in the direction of arrow F at 18.

However, in the above configuration, FIG.

As shown in FIG. 4, since the holding force of the film carrier 1 is small at the time when the finger 2o of the film carrier 1 is bonded, the finger 20 and the bump 19 on the top of the semiconductor element 17 are bonded, but the adjacent There is also a high possibility that the finger 20 will come into contact with the bump 19a of the semiconductor element 17a. Furthermore, the edge portion 2 of the semiconductor element 17
This has the drawback that bonding may be performed with the finger 20 in contact with the finger 1.

Purpose of the Invention In view of the above-mentioned drawbacks, the present invention provides a method for transporting a film carrier while applying a constant tension to the film carrier.
The present invention provides a film carrier conveying and holding device that fixes and holds film carriers before and after a working position in that state.

Structure of the Invention The present invention comprises a sprocket for feeding a film carrier and its drive motor, a sprocket for applying tension to the film carrier and its drive motor, positioning claws 2 for positioning the film carrier, and a guide section for supporting the film carrier before and after the 6'' position. .

It is composed of a fixture for fixing and holding the film carrier, and has the effect of accurately transporting and positioning the film carrier with minimal tension and completely fixing and holding the film carrier after positioning.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings of FIGS. 5 to 8.

1 is a film carrier, and 2 is a supply reel that winds up the supplied film carrier 1. 3 is a take-up reel for winding up the film carrier 1 after bonding. Reference numeral 4 denotes a feed sprocket that engages with perforation holes 5 provided at a constant pitch on both edges of the film carrier 1 so as to intermittently feed the film carrier 1 at a predetermined pitch in the direction of the arrow. 6 is connected to the feed sprocket 4;
07 is a motor that rotates the film carrier 1 by a predetermined angle in the direction of arrow B.
Tension sprocket 6 that engages with.

8 is a torque motor that always applies a constant tension to the film carrier 1 in the direction opposite to the feed direction indicated by the arrow, and is connected to the tension sprocket 7 to generate rotational force in the direction of the arrow C.

9 and 10 are idler rollers. Reference numeral 11 denotes a guide that supports the film carrier 1 at a working position between the feed sprocket 4 and the tension sprocket 7. 1
A positioning claw 2 is biased by an elastic body 13, has a wedge-shaped tip, and circumscribes the perforation hole 6, thereby positioning the film carrier 1 after intermittent feeding. Reference numeral 16 denotes a heat tool, which moves up and down in the direction of arrow E to perform a bonding operation. 17 is a semiconductor element;
It is held on a stage that moves up and down in the direction of arrow F of 8. 22 and 22a are cylinder bodies, and 1.23 and 23a are fixtures for holding the film carrier 1 fixedly.

The operation of the film carrier conveying and holding device configured as described above will be described below.

The film carrier 1, to which a constant tension is applied in the direction of the arrow C 7' via the tension sedge rocket 7, is sent in the direction of the arrow C at a constant pitch by the feed sprocket 4, and the film is placed under constant tension with the positioning pawl 12 as a reference. Carrier 1 is positioned. Thereafter, the cylinders 22, 22a simultaneously move in the direction of arrow G, and the film carrier 1 is sandwiched and fixed between the bottom surfaces 24, 24a of the fixtures 23, 238 and the guide 11. Heat tool 1 in fixed state
6 descends to perform a bonding operation. After the bonding is completed, the fixtures 23, 23a return to the direction of arrow H, the fixation of the film carrier 1 is secured, and the next film carrier 1 is fixed.
A feeding operation is performed.

FIG. 7 shows the state during bonding using the apparatus of the present invention, in which the film carrier 1 is attached to the fixture 23.
．． Since it is fixed by 2'3, there is little deflection of the bonding thread, and when the heat tool 16 is lowered, the finger 20 is automatically formed by the forming amount 2. Therefore, the finger 20 does not come into contact with the bump 19a on the upper surface of the adjacent semiconductor element 17a. Further, contact between the edge portion 21 and the finger 20 during joining cannot occur.

Effects of the Invention As described above, the present invention positions the film carrier while applying a constant tension, and then fixes and holds the film carrier before and after the bonding work position using a fixture, thereby making it easier to use the heat tool during bonding. Not only does the position of the film carrier remain unaffected by compression, but also the fingers are formed simultaneously during bonding, which eliminates contact of the fingers with anything other than the bonding bump, greatly improving bonding reliability. It produces practical effects.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional film carrier transport and holding device, Fig. 2 is a sectional view of the positioning claw portion, Fig. 3 is a sectional view of the bonding device in the conventional device, and Fig. 4 is a defective bonding state in the conventional system. FIG. 6 is an explanatory diagram of a film carrier conveying and holding device 9 in an embodiment of the present invention. FIGS. 7a and 7b are a front sectional view and a side sectional view, and FIG. 8 is a sectional view of the bonding device in this apparatus. . 1...Film carrier, 4...Feeding tin rocket, 7...Tension sedge rocket, 11...Guide, 12...Positioning claw , 22... cylinder, 23... fixture. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 7 Figure 2

Claims (1)

[Claims] A feed sprocket that engages with perforation holes provided at a constant pitch on both edges of the film carrier, a motor that is connected to the feed sprocket and rotates by a predetermined angle, and a feed sprocket sandwiching the working position. and opposite i
a tension sprocket located at 11 and engaged with the perforation hole; a motor connected to the tension sprocket and applying a constant tension in a direction opposite to the film carrier feeding direction; Par 7 me□
□□ A positioning claw that is biased by an elastic body and circumscribes the one-way hole, a guide section that guides the film carrier at the working position, and a fixture that is provided within the guide section and that fixes and holds the film carrier before and after the working position. A film carrier conveying and holding device.