JP3296217B2 - Tray feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a tray supply device provided in an electronic component mounting apparatus.

[0002]

2. Description of the Related Art An electronic component mounting apparatus for mounting an electronic component on a substrate picks up an electronic component provided in an electronic component supply section by a transfer head and transfers the electronic component to the substrate.

Various types of electronic component supply units have been used. For relatively large-sized electronic components such as electronic components with leads, for example, a tray type is often used.

A large number of pockets are formed on the tray in a matrix, and one electronic component is stored in each pocket. In general, the trays are stacked and stored in a magazine, a tray to be used is pulled out of the magazine, and a used tray is returned to the magazine (for example, see Japanese Patent Application Laid-Open No. 2-265806). .

FIG. 3 is a plan view of a conventional tray supply device, which simply shows how a tray is inserted into and removed from a magazine. In the figure, 1 is a tray, 2 is a tray 1
Is a pair of left and right guide rails provided in front of the magazine 3, 3 is a magazine, and 4 is a magazine. Generally, the tray 1 is placed on the pallet 2 and handled.
The pallet 2 in the magazine 3 is pulled out to the left (arrow A) by a loading / unloading means (not shown). The used pallet 2 is pushed rightward (arrow B) by the loading / unloading means and returned into the magazine 3. The guide rail 4
This guides the pallet 2 into and out of the magazine 3.

[0006]

In FIG. 3, W1 is the width of the pallet 2, W2 is the distance between the inner walls of the magazine 3, and W3
Is the distance between the guide rails 4. The intervals W2 and W3 are only slightly larger than the width W1 so that the pallet 2 does not rattle. For this reason, if the pallet 2 is slightly rotated in the horizontal direction when the pallet 2 is taken in or out, or if there is a slight assembly error in the pallet 2, the magazine 3, or the guide rail 4, the pallet 2 is pulled out in the arrow A direction. , The leading edge E1 of the pallet 2 is likely to collide with the end face a of the guide rail 4, and when returning the pallet 2 in the direction of arrow B, the trailing edge E2 of the pallet 2 is likely to collide with the end face b of the magazine 3. When the pallet 2 collides with these end surfaces a and b, not only the tray 1 cannot be taken out and put in, but also the impact of the tray 1
There is a problem that the electronic components housed in the pocket jump out of the pocket.

As a means for solving such a problem,
It is conceivable to form a taper at the end of the guide rail 4 to smoothly introduce the pallet 2. However, even if such a means is used, the above problem still occurs if there is an error in assembling the guide rail 4 and the magazine 3.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a tray supply device capable of smoothly moving a tray into and out of a magazine.

[0009]

According to the present invention, there is provided a tray supply device comprising: a magazine for stacking and storing trays; a lifter for moving the magazine up and down; a loading / unloading unit for loading and unloading the tray into and out of the magazine; And a guide rail for guiding both sides of the tray to be taken in and out of the magazine. The guide rail is rotatably arranged in a horizontal direction, and a driving means for horizontally rotating the guide rail is provided.

[0010]

According to the present invention having the above-mentioned structure, the tray can be smoothly taken in and out by adjusting the distance between the guide rails by horizontally rotating the guide rail in accordance with the taking in and out of the magazine. it can.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a tray supply device according to an embodiment of the present invention, and FIGS. 2A and 2B are plan views of the same.

In FIG. 1, reference numeral 11 denotes a tray, which is placed on a pallet 12. Electronic components 13 are stored in the pocket of the tray 11. The tip of the pallet 12 is an upright wall portion 12a bent upward.
Racks 15 are formed on the inner wall of the magazine 14 with a vertical pitch, and the pallets 12 are stored on the rack 15 one by one. The magazine 14 is held by a lifter 16. When the motor 17 is driven to operate the lifter 16, the magazine 14 moves up and down.

A base 20 is provided in front of the magazine 14. A timing belt 21 is stretched horizontally inside the base 20. Reference numeral 22 denotes a pulley on which the timing belt 21 is adjusted. A block 23 is attached to the timing belt 21. A claw 24 is erected on the block 23. An elongated hole 25 is formed in the upper surface of the base 20, and the claw 24 protrudes upward from the elongated hole 25. Timing belt 2 driven by a motor (not shown)
When 1 rotates, the claw 24 advances and retreats along the elongated hole 25. The timing belt, the pulley 22, the block 23, the claw 24, and the like constitute a tray loading / unloading unit.

A pair of left and right guide rails 26 are provided on both sides of the elongated hole 25. The distal end of the guide rail 26 is pivotally mounted on the base 20 by a pin 27 so as to be horizontally rotatable. The rear end of the guide rail 26 is connected to a rod 29 of a cylinder 28. Rod 29 of cylinder 28
When the guide rail 26 is retracted, the guide rail 26 rotates horizontally about the pin 27. Reference numeral 30 denotes a transfer head, which has a nozzle 31. The transfer head 30 picks up and picks up the electronic component 13 in the tray 11 drawn out onto the base 20 by sucking it at the lower end of the nozzle 31 and transfers it to a predetermined position.

The tray supply device has the above-described configuration, and the operation will be described next. First, the operation of pulling out the tray 11 in the magazine 14 onto the base 20 will be described.
In this case, in FIG. 1, the lifter 16 is operated to move the magazine 14 up and down, so that the pallet 12 provided with the predetermined tray 11 is at the same level as the upper surface of the base 20. Next, the claw 24 is advanced toward the pallet 12 in the magazine 14, and the claw 24 is engaged with the upright wall portion 12a. Next, when the claws 24 are retracted, the pallet 12 is moved from the magazine 14 to the base 2.
0 (arrow A in FIG. 2A).

FIG. 2A shows the state at this time. In this case, by pulling in the rod 29 of the cylinder 28, the guide rail 26 is rotated about the pin 27 in the direction of arrow C, and the interval between the rear ends of the left and right guide rails 26 is increased. Thereby, the pallet 12 can be smoothly pulled out without the front end edge E1 colliding with the end face a of the guide rail 26.

When the pallet 11 on the base 20 is to be returned into the magazine 14, the pallet 12 is pushed in by the claws 24 as shown in FIG. In this case, the rod 29 of the cylinder 28 is protruded, and the guide rail 26 is rotated about the pin 27 in the direction of arrow D to reduce the distance between the rear ends of the guide rail 26. As a result, the rear end edge E2 of the pallet 12 is smoothly collected in the magazine 14 without colliding with the end face b of the magazine 14 (arrow B). In the above operation, it is desirable that the interval between the rear ends of the guide rails 26 be wider than the magazine width when the pallet 12 is pulled out from the magazine 3 and narrower than the magazine width when returning the pallet 12 to the magazine 3.

[0018]

According to the present invention, the tray can be smoothly moved in and out by adjusting the distance between the guide rails by horizontally rotating the guide rail in accordance with the movement of the tray into and out of the magazine.

[Brief description of the drawings]

FIG. 1 is a perspective view of a tray supply device according to an embodiment of the present invention.

2A is a plan view of a tray supply device according to an embodiment of the present invention. FIG. 2B is a plan view of a tray supply device according to an embodiment of the present invention.

FIG. 3 is a plan view of a conventional tray supply device.

[Explanation of symbols]

 11 Tray 12 Pallet 14 Magazine 16 Lifter 20 Base 24 Claw 26 Guide rail 27 Pin 28 Cylinder

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H05K 13/02

Claims (1)

(57) [Claims] 1. A magazine for stacking and storing trays, a lifter for raising and lowering the magazines, a loading / unloading means for loading and unloading pallets on which trays are placed, and loading and unloading magazines in front of the magazines. A guide rail for guiding both sides of a pallet on which the tray is mounted, a guide rail disposed rotatably in the horizontal direction, and a drive unit for horizontally rotating the tray. .