JPH0413257B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic tray feeding device for continuously and automatically feeding and unloading trays on which dies are mounted during operation of a die bonder, flip-chip bonder, or the like.

Conventionally, this type of supply device is of the type in which one to four trays are placed on an XY table that positions the dies arranged vertically and horizontally on the trays one by one to the pick-up position. Once all the dies have been picked up, it is necessary to stop the bonder and replace it with a new tray, which is inefficient.

The present invention was developed in view of the above-mentioned drawbacks of the prior art, and involves continuously feeding trays during automatic operation of the bonder, positioning the trays, and then positioning the dies one by one to the pick-up position using an XY table. Another object of the present invention is to provide an automatic tray feeding device capable of carrying out empty trays and storing the empty trays, thereby improving the work efficiency of a bonder.

Hereinafter, the present invention will be explained with reference to illustrated embodiments.
FIG. 1 shows an embodiment of an automatic tray feeding apparatus according to the present invention, in which a is a partially cutaway front view and b is a plan view. 1 is the main body of the transport device, 2 and 3 are the main body 1
A pair of pulleys are rotatably provided at both ends of the , 4 and 5 are round belts that go around the pulleys 2 and 3,
6 is a motor attached to the main body 1, 7 is a motor 6
Drive pulley fixed to the output shaft of 8, pulley 2
A driven pulley 9 fixed to the rotating shaft is a belt that goes around the driving pulley 7 and the driven pulley 8.
Therefore, the rotation of the motor 6 causes the pulleys 2 and 3 to rotate through belt transmission, causing the round belts 4 and 5 to rotate, and the trays A to G placed on the round belts 4 and 5 to move around the main body 1. They are guided by the side walls and conveyed in alignment.

Reference numeral 10 denotes a pawl driving solenoid attached to the main body 1 and placed near the pulley 2, and at the tip of its reciprocating shaft is a pawl 1 that can protrude into the center of the round belts 4 and 5.
1 is provided. Reference numeral 12 denotes a tray detection light emitter provided near the claw 11; 13 a tray detection sensor provided opposite to the light emitter 12; 14;
15 is a tray positioning solenoid attached to the main body 1 and provided one tray to the left of the pawl driving solenoid 10, and 15 is a round belt 4 provided at the tip of the reciprocating shaft of the tray positioning solenoid 14.
This is a stopper made of an elastic wire that can be projected directly above the stopper. 16 is an XY table on which the main body 1 can be placed and moved vertically and horizontally, and 17 is a storage box for empty trays provided below the front end of the main body 1.

Next, the operation of the automatic tray feeding apparatus having the above structure will be explained with reference to FIG. As shown in Figure a, the dies arrayed vertically and horizontally on the tray A at the forefront that has been aligned and conveyed and locked by claws 11 are moved by the feeding movement of the XY table 16,
As shown in
It is then sent to the end point 21), positioned at a predetermined pick-up position, picked up by a known pick-up means, and supplied to a die bonder (not shown). When all the dies on tray A have been picked up, the pawl driving solenoid 10 is operated to lower the pawl 11 and the tray A is released.

Subsequently, the motor 6 rotates, and the tray A is conveyed forward by the round belts 4 and 5, as shown in FIG. At this time, since the tray B following the tray A is stopped by the stopper 15, it slides to a stop on the round belts 4 and 5, and there is a gap between the two trays A and B. When a certain period of time has elapsed since the tray A began to be conveyed, the tray positioning solenoid 14 operates to move the stopper 15 backward, as shown in FIG. As a result, trays B to G start moving forward. Then, as shown in FIG. 1E, the tray A is stored in the storage box 17 (see FIG. 1). Further, when the passage of tray B is detected by the tray detection sensor 13, the pawl driving solenoid 10 is operated, and the pawl 11 is raised to lock the tray B. Furthermore, as shown in FIG.
operates to move the stopper 15 forward, locking the tray C and pressing the tray B against the pawl 11 by its elastic force, thereby positioning the tray B. After this, the motor 6 stops. Then, the dies on tray B are sequentially moved to the pick-up position by the XY table 16 again.

After that, the above operation continues to be repeated. Therefore,
If the tray is placed on the round belts 4 and 5 by the worker following the tray G, the trays can be continuously supplied and carried out without stopping the operation of the bonder.

As is clear from the above description, according to the present invention, trays containing dies can be automatically supplied and empty trays can be automatically discharged during automatic operation of the bonder, thereby significantly improving work efficiency.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of an automatic tray feeding apparatus according to the present invention, in which a is a partially cutaway front view, b is a plan view, and FIGS. 2 a to 2 f are explanatory views of the operation. 2, 3...Pulley, 4, 5...Round belt, 6...
... Motor, 7 ... Drive pulley, 8 ... Driven pulley, 9 ... Belt, 10 ... Pawl driving solenoid, 11 ... Pawl, 14 ... Tray positioning solenoid, 15 ... Stopper, 16 ... XY table.

Claims (1)

[Claims] 1. Conveying means for arranging a plurality of trays for storing parts vertically and horizontally and conveying them in a straight line; means for positioning the tray at the forefront of the trays in a detachable manner; and means for detachably positioning the tray following the tray at the front. and an XY device for placing the conveying means and transporting the parts stored in the tray vertically and horizontally at each arrangement pitch to sequentially position the parts at predetermined pick-up positions.
Automatic tray feeding device equipped with a table.