JPH03217090A - Chip supply device - Google Patents

Abstract

PURPOSE:To prevent a chip from jumping or rising by suppressing energizing means by pressing means in cooperation with the vertical movements of a transfer head, and opening or closing a shutter. CONSTITUTION:A tape 2 is fed at a pitch by the rotation of a pawl wheel 7, and a chip P is fed to a takeup position directly under a nozzle 32. Then, a transfer head 30 is moved down, an elevator 23 is pressed down by pressing means 33, a lever 21 is rotated counterclockwise, a shutter 15a is laterally moved to be opened, the nozzle 32 is landed on the chip P to suck it and to take it up. Then, the nozzle 32 is raised, the pressing state of the elevator 23 is released by the means 33, and the shutter 15a is moved rightward by the tension of the spring 22 to be closed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a chip supply device, and more specifically, when taking up chips from an electronic component encapsulating tape with a nozzle of a transfer head, the present invention prevents chips from flying out. The present invention relates to a shutter opening/closing mechanism for preventing.

(Prior art) As a means of mounting chips such as ICs, second density chips, and resistor chips on a board, a cover tape is peeled off while pitch-feeding an electronic component encapsulating tape wound around a supply reel, and the tape is pocketed. A means of suctioning and taking up Chisop stored in a board with a nozzle of a transfer head, and transferring and mounting it on a board has been widely implemented.

As mentioned above, in the means for supplying chips of electronic component encapsulating tape to the nozzle of the transfer head, the take-up position is set so that the chips do not fly out from the pocket due to the mechanical shock caused by the tape feeding. It is known to provide a shutter above the chip.

Conventionally, the opening/closing means of this shank is linked to the pitch feeding means of the tape, and when the chisop is pitch-fed to the take-up position, the shutter is closed to prevent the chisop from flying out, and the pitch feeding is stopped. Then, the shutter opens and the nozzle of the transfer head descends.
This chip was supposed to be taken up.

(Problems to be Solved by the Invention) As described above, in the conventional means, the shutter opens and closes in conjunction with the tape pitch feeding means, and after the shutter opens, the nozzle descends to remove the chip. Since the take-up was designed to take up the nozzle, there was a problem in which the impact when the shutter opened caused the chip to fly out of the pocket, or cause the so-called chip to stand up, resulting in frequent take-up errors caused by the nozzle. Ta. Particularly in recent years, there has been a trend toward miniaturization of chips, with the smallest chip having a side length of less than lsm3, which makes it easy to cause the above-mentioned popping out or standing up due to a slight impact.

Such popping and standing is caused not only by the impact of opening and closing the shutter, but also by moving the tape unit equipped with the electronic component encapsulating tape laterally using a table moving device in order to move the desired chip to the take-up position of the nozzle. It can also be caused by the impact that occurs when In other words, for high-speed mounting, the next time the tape unit is taken up by the nozzle, the chip is postponed, and then this tape unit is moved laterally along the feed screw of the table moving device, so that this chip can be taken up by the nozzle. A means for transferring the tip to the take-amp position has been implemented, but in this case, the shutter of the tip that has been advanced is open, so the above-mentioned popping out or standing-up also occurs due to the impact when the lateral movement is stopped.

In any case, in the conventional means, when the chip stored in the pocket of the electronic component encapsulating tape is pitch-fed to the take-up position by the nozzle, various mechanical shocks are applied, causing the chip to pop out or stand up. was likely to occur.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a chip supply device that can prevent chips from flying out or standing up.

(Means for Solving the Problems) For this purpose, the present invention provides a supply reel for winding an electronic component encapsulating tape in which a chip is encapsulated in pockets formed at intervals, and a supply reel for winding the electronic component encapsulating tape in pitch-feeding manner. The cover tape of this electronic component encapsulation tape is #JMed and the pitch feed means is pitch-fed to the take-up position by the nozzle of the transfer head. The shutter is opened and closed by a spring material. A biasing means for biasing in the closing direction by a spring force, and a pressing means for pressing the biasing means in the opening direction of the chassocket is provided on the transfer head, so that the chip is taken up by the nozzle, In conjunction with the movement of the transfer head up and down, the pressing means presses the urging means to open and close the shutter.

(Function) In the above configuration, when the transfer head descends to pick up the chisel, the urging means is pressed by the pressing means and the shunter is opened. Next, when the nozzle of the transfer head attracts this chip and rises, the pressing state of the urging means is released in conjunction with this rising operation, and the shutter is closed by the spring force of the spring material.

(Example) Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side view of the chip supply device, and FIG. 2 is a plan view. Reference numeral 1 denotes a supply reel, on which an electronic component enclosing tape 2 is wound. As shown in FIG. 2, pockets 3 are formed at intervals on this tape 2, and Chisop P is enclosed in these pockets. 4 is a guide rail for the tape 2, and the tape 2 is pitch-fed forward along this guide rail 6.

Reference numeral 5 denotes pitch feeding means for the tape 2 provided in front of the guide rail 4, and includes a ratchet wheel 7 that rotates around a rotating shaft 6.
As the ratchet wheel 7 rotates counterclockwise in pitch, the tape 2 is fed in pitch. In FIG. 2, reference numeral 8 denotes pitch feed holes drilled in the tape 2 at different pitches. Incidentally, the pitch feeding means 5 is a well-known means and is simply illustrated.

Reference numeral 11 denotes a cover plate that covers the guide rail 4, and a slit hole 12 is formed near the tip of the cover plate.
It is peeled off by being folded back from the winding reel 1.
It is wound up in 3. Further, by peeling off the cover tape 2a in this manner, the tisop P in the pocket 3 is exposed so that it can be ticked up by a nozzle (described later).

A sliding plate 15 is disposed along the side wall surface of the guide rail 4 so as to be slidable in the front-rear direction N, and a shutter 158 is bent and formed on the upper part of the sliding plate 7. This shutter 15a, by sliding in the front-rear direction N, approaches and separates from the tip end surface of the cover plate 11, and opens and closes the upper part of the tip 7 P that has been sent to the take-up position. A long hole 16 is formed in the sliding plate 15, and a pin 17.17 is loosely attached to the long hole 16.

Reference numeral 21 denotes a rotary lever 22 pivotally attached to the rotary shaft 6, and a coil spring material that biases the rotary lever 21 clockwise, and both 21 and 22 constitute biasing means. The upper end 21a of this lever 21 is engaged with the sliding plate I5, and the spring member 22 uses its spring force to move the rotary lever 21 clockwise, that is, the shank 15a closes the upper part of the tip P. It is biased in the closing direction (rightward in FIGS. 1 and 2). Further, an elevator 23 is attached to a protrusion 2lb that protrudes forward from the lever 2l.

Reference numeral 30 denotes a transfer head, and its main body 31 is equipped with a nozzle 32 for adsorbing and ticking up chips P, and a pressing means 33 is provided at the front of the transfer head. There is. This pressing means 33 is located directly above the elevator 23, and when it descends, it presses the elevator 23 downward. Then, the lever 21 rotates counterclockwise against the spring force of the spring material 22, the sliding plate 15 moves to the left, and the shutter 15a opens the top of the chip P.

The present apparatus has the above-mentioned configuration, and its operation will be explained next with reference to FIG.

Normally, the shutter 15a is biased to the right by the spring force of the spring material 22 to close the top of the chip P at the pick-up position and prevent the chip P from jumping out. As the ratchet wheel 7 rotates in pitch, the tape 2 is fed in pitch, and the chip P is sent to the pick-up position directly below the nozzle 32 (see FIG. 3(a)).

Next, in order to pick up this chip P, the transfer head 30 descends. Then, the elevator 23 is pressed downward by the pressing means 33, the lever 921 rotates counterclockwise, and the shank 15a moves to the left and gradually opens (FIG. 3(b)), and then the shutter 158 opens. When fully opened, the nozzle 32
It lands on the top surface of the plane, attracts it, and takes it up ((C) in the same figure). Next, when the nozzle 32 rises, the pressing state of the elevator 23 by the pressing means 33 is released, and the spring material 2
2, the shutter 15a moves to the right and closes. As described above, according to the present means, the shutter 158 can be opened and closed only when the nozzle 32 takes up the chiseop P in conjunction with the vertical movement of the transfer head 30.

(Effects of the Invention) As explained above, the present invention opens and closes the shutter in conjunction with the vertical movement of the transfer head.
The shutter can be opened only when the nozzle takes up the chip, and this prevents the chip from flying out or standing up due to the mechanical impact caused by opening and closing the shutter. can do.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the chip supply device, Fig. 2 is a plan view thereof, and Fig. 3 (a).
, (b) and (c) are side views in the order of take-up. 1... Supply reel 2... Electronic component enclosing tape 2a... Cover tape 5... Pitch feeding means 15a... Charcoal 21. 22... Urging means 30... Transfer head 32. ... Nozzle 33 ... Pressing means

Claims (1)

[Claims] A supply reel that winds an electronic component encapsulating tape with chips encapsulated in pockets formed at intervals, a pitch feeding means that pitches the electronic component encapsulating tape, and a cover tape of the electronic component encapsulating tape peeling off. A shutter for opening and closing the upper part of the chip that has been pitch-fed to the take-up position by the nozzle of the transfer head, and a biasing means for biasing the shutter in the closing direction by the spring force of a spring material. A pressing means for pressing the biasing means in the shutter opening direction is provided on the transfer head, and in order to take up the chip by the nozzle, the pressing means moves up and down in conjunction with the movement of the transfer head to take up the chip. A chip supply device characterized in that the shutter is opened and closed by pressing a biasing means.