JPH021289Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a printed circuit board transfer device that transfers thin plates, particularly printed circuit boards with many small holes for mounting parts, one by one.

As shown in FIG. 1, a device as shown in FIG. 2 has conventionally been used to transfer a printed circuit board 2 having a plurality of small holes 1 of about 1 mm in diameter passed through it in the thickness direction for mounting parts. That is, a lift 3 is provided which lifts and lowers a stack of a large number of printed circuit boards 2, and a side plate 4 for positioning one end of the printed circuit boards 2 is provided on one side of the lift 3 in the vertical direction. A vacuum (or blower) suction pad 7 is provided at the top, which is moved left and right by a cylinder 5 and vertically by a cylinder 6. The suction pad 7 descends, suctions the uppermost substrate 2, ascends, and then moves laterally to transfer the substrate 2 to the next process. However, with this device, the substrate 2 is penetrated by a large number of small holes 1, so it cannot reliably suction the substrate 2, and in the case of blower suction, it has the disadvantage of lifting multiple substrates 2 at the same time. .

This invention aims to eliminate the above-mentioned drawbacks and provide a transfer device for printed circuit boards that can always separate and transfer one board at a time.

Examples of this invention will be described below based on the drawings. A lift 12 is provided which lifts and lowers a large number of printed circuit boards 11, and side plates 13, 13 for positioning one end of the circuit boards 11 are vertically provided on one side of the lift 12. A conveying belt 15 is stretched over the upper part via a pair of left and right pulleys 14, 14, and a pair of belts 15 are provided at an interval in the front and rear. Front and rear pulleys 14,1
4 is coaxial, and the shaft 16 on the left side when viewed from the front
is used as a drive shaft, which is connected to a motor 19 via a gear 17 and a chain 18. motor 19
is driven so that the lower side of both belts 15, 15 is
Turn it so that it runs in three directions. Rollers 20, 20 are provided at the upper ends of the side plates 13, 13, respectively, and a feeding gap 21 corresponding to the thickness of the substrate 11 is provided between the rollers 20 and the belt 15. Slightly below the belt 15, an air blowing nozzle 22 for blowing air toward the end of the thin plate is installed on the substrate 11.
Three air pipes are provided at the front and rear of the air conditioner, and these are connected to an arbitrary air source through an air pipe (not shown).

Next, the operation of the above device will be explained. A large number of printed circuit boards 11 are placed on a lift 12, and their left ends are positioned to match side plates 13, 13 serving as rulers. Start the motor 19 and move the belt 15,
15 in the direction of arrow A. The lift 12 is raised to raise the uppermost substrate 11 to the position of the rollers 20, and air is blown out from the front and rear nozzles 22. When air is blown out, the upper substrate 11 is separated and floated due to the blowing force. When floating, the uppermost substrate 11 comes into contact with the belts 15, 15, and is pulled out to the left by the contact friction with the belts 15, 15, and sent out of the machine through the gap 21. 1
When one substrate 11 is sent out, the lift 12 is raised by the thickness of the substrate 11, and the next substrate 11 is sent out.

As explained above, this idea consists of a belt running left and right on top of a lift that lifts up with a large number of printed circuit boards placed on it, and air directed slightly below the belt towards the end of the printed circuit boards. A blowing nozzle is provided, and the printed circuit board is separated and levitated by the force of this air jet. When the substrate floats up, the uppermost substrate comes into contact with the belt, and the friction caused by the contact with the belt pulls it out and sends it out of the machine one by one through the slit. Therefore, unlike conventional equipment, it is difficult to suction printed circuit boards because of the small holes that pass through them, and there is a risk of lifting multiple sheets at the same time when using blower suction. Since it is simple, it can be operated with a small amount of power, which is a great effect.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a printed circuit board, FIG. 2 is a front view of a conventional printed circuit board transfer device, FIG. 3 is a front view of a printed circuit board transfer device according to this invention, and FIG. 4 is a perspective view of the same. It is a diagram. 11...Printed circuit board, 12...lift, 14
...Pulley, 15...Belt, 22...Nozzle.

Claims (1)

[Scope of utility model registration request] A lift is provided that lifts a large number of printed circuit boards with many small holes placed thereon, and a belt running left and right is stretched over the top of the lift, and a side facing toward the end of the printed circuit board is placed slightly below the belt. A nozzle is installed to blow air out of the machine, and the force of this air jet separates the printed circuit boards one by one and causes them to float horizontally, and the topmost printed circuit board is sent out of the machine one by one by the contact friction with the belt. Transfer device for printed circuit boards.