JPH02175536A - Separating by one piece and feeding device of printed substrate - Google Patents

Abstract

PURPOSE:To reduce the fault of the absorption caused by sucking multiple pieces by providing a means for sliding substrates to one direction, at least, and while piling up them so as to avoid the overlap of through holes provided in printed substrates in the A stage side. CONSTITUTION:The substrates 1 piled up on the A stage are absorbed from the upper, and under the absorbed condition, the printed substrate is passed through an evening part 2 located to form the clearance between a roller 21 and a stopper 22 with the plate thickness of the printed substrate 1, and is separated by one to be carried to the B stage. At the time of putting the substrates put in order on the A stage, the printed substrate adjacent to the upper and lower is sealed with one piece by a pressing plate 83, and when an absorption head 71 absorbs the substrate, only two pieces of the absorbed substrate 1 and the one under the absorbed substrate are absorbed, and the sucking multiple pieces is prevented.

Description

[Detailed Description of the Invention] [Summary] Regarding a printed circuit board single sheet separation and supply device using vacuum suction and scraping, the purpose is to provide a supply device that eliminates suction failure due to suction of a large number of sheets, and stacks them on the A stage. The printed circuit board is sucked from above, and while it is still sucked, it is passed through the abrasion section between the roller (211 and stopper c!3) arranged to match the thickness of the printed circuit board, and separated into only one sheet. In the device for separating and feeding one printed circuit board from the other to the B stage, the A stage side is provided with a means for stacking the printed circuit boards by shifting them in at least one direction so that the through holes provided in the printed circuit boards do not overlap.

[Industrial application field]

The present invention relates to a printed circuit board supply device using vacuum suction and scraping.

Pudding 1 ~ The board is completed by processing such as printed wiring, lamination, and perforation, but since it is in the form of a plate, it is subsequently handled in stacks and transported, and when necessary, it is taken out one by one and sent to a processing machine. is supplied to.

There are various types of printed circuit board supply devices, and it is required that each of them be able to reliably supply one board, safely and efficiently without causing damage.

[Conventional technology]

Here, an example of supplying a printed circuit board to an automatic component mounting machine will be described.

FIG. 3 shows an example of a conventional printed circuit board single sheet separating and feeding device.

As shown in FIG. 3, the printed circuit board supply device 35 includes a roller conveyor 91, a stacking section 85 that aligns and stacks the printed circuit boards 1 on the A stage of the roller conveyor 91.
It is composed of a vacuum suction device 7, a scraping section 2, and a supply conveyor 92 with a B stage.

The stacking section 85 has a dispensing push plate 81 and an alignment stopper 86.
It is composed of an alignment push plate 87, and a driving mechanism thereof (not shown).

The vacuum suction device 7 is composed of a suction head 71, a moving mechanism thereof, and a vacuum pump (not shown).

The scraping section 2 has a configuration in which a roller 21 and a stopper 22 are disposed facing each other with a distance equal to the thickness of the printed circuit board 1.

The operation of the printed circuit board supply device 35 is such that the printed circuit boards 1 are discharged from a stocker (not shown) to a roller conveyor 91 in a stacked state, and are transferred to a vertical delivery push plate 81 which is movable in the conveyance direction on the roller conveyor 91. is pushed a predetermined distance by, at the A stage position, the front of the alignment stopper 86 has two perpendicular planes, the X plane and the Y plane, and the X plane.
The rear part is sandwiched between the dispensing push plate 81 and is arranged with an appropriate gap.

Next, in this state, the vertical alignment press plate 87, which is movable in the X-axis direction perpendicular to the conveyance direction Y-axis direction of the roller conveyor 91, moves a predetermined distance, and the alignment stopper 8
The printed circuit board 1 is pushed in between the Y plane of 6 and the four sides of the stack are
Dispensing push plate 81, alignment push plate 87, and alignment stopper 86
The printed circuit boards 1 are surrounded by two sides with a gap between them, and because of the gap, the printed circuit boards 1 can be easily taken out, and the printed circuit boards 1 can be stacked in alignment with less misalignment.

Next, the suction head 71 moves and suctions the printed circuit board 1 from above, lifts it up to a predetermined height, and then moves it horizontally in the Y direction. When passing the roller 21 of the scraping section 2 and the stopper 22, the spacing between them is equal to the thickness of the printed circuit board 1, so even if multiple boards are sucked at the same time, only the topmost printed circuit board 1 will pass. The printed circuit boards 1, which are produced and simultaneously attracted to the lower side thereof, hit the stopper 22 and cannot pass through, falling onto the A stage and being stacked again.

In this way, only the topmost printed circuit board 1 that has been sucked is B.
It is carried to the stage, released from suction, and transferred.

[Problem to be solved by the invention]

However, if the printed circuit board l has many through holes 11 such as component lead insertion holes and through holes, and there are many through holes 11 within the suction area of the suction head 72, the When trying to suck up a large number of printed circuit boards 1 through the holes 11, it often happens that the printed circuit boards 1 cannot be sucked up due to their own weight.

■ If there is a suction failure in the vacuum suction device 7, it will be judged as an abnormal condition and the automatic feeding device will be stopped. It was not possible to restart the system, which required manpower and worsened the equipment's operating rate.

■ Increasing the suction power can reduce suction failures, but
When passing through the subsequent scraping section 2, the suction force of the lower suction printed circuit board 1 also increases, and only the suction head 71 slips, making it impossible to scrape off the printed circuit board 1.

There were problems such as.

SUMMARY OF THE INVENTION In view of these problems, it is an object of the present invention to provide a feeding device that eliminates suction failures caused by sucking up a large number of sheets.

[Means to solve the problem]

The above problem is solved by suctioning the printed circuit boards 1 stacked on the A stage from above, as shown in the principle configuration diagram in FIG.
While adsorbed, the printed circuit board is passed through the scraping section 2 in which the distance between the roller 21 and the stopper 22 is arranged to match the thickness of the printed circuit board 1, and the printed circuit board is separated into only one sheet and then transferred to the B stage. This problem is solved by the printed circuit board separating and supplying device 3 of the present invention, which is equipped with a means for stacking the printed circuit boards 1 while shifting them in at least one direction so that the through holes 11 provided in the printed circuit boards 1 do not overlap on the A stage side. Ru.

[For production]

In other words, if the through holes are shifted vertically, the printed circuit board will be
Only the sheets are suctioned, and there is no suction failure caused by suctioning a large number of sheets, and the purpose can be achieved.

FIG. 1(a) is a diagram showing the principle configuration of the present invention, and FIG. 1(b) is a diagram of the principle of the present invention.
An enlarged view of the part is shown.

Since the printed circuit boards 1 are stacked in piles of the same type, the various through holes 11 provided in the printed circuit boards 1, such as through holes and insertion holes for component leads, are naturally placed on the mounting grid. They are provided at the same position, and as shown in FIG. 1(b), if the upper and lower adjacent printed circuit boards 1 are shifted by more than the hole diameter of the through hole 11 when aligning them on the A stage, only one through hole 11 will be left. When the suction head 71 suctions the suction head 71, only the suction printed circuit board 1 and the one immediately below it are suctioned, and a large number of sheets are not suctioned up.

The direction in which the printed circuit boards 1 are stacked may be shifted in one direction or in two directions.

Further, as this shifting means, for example, the stacked printed circuit boards 1 can be pressed against each other between parallel inclined surfaces, etc. to easily shift the printed circuit boards 1.

In this way, it is possible to provide a feeding device that eliminates suction failure due to suction of a large number of sheets.

〔Example〕

The gist of the present invention will be specifically explained below with reference to embodiments shown in the drawings. The same reference numerals indicate the same objects throughout the drawings, and FIG. 2(a) is a block diagram of an embodiment of the present invention, and FIG. 2(b) is a diagram showing the same Y-axis.

The present embodiment is applied to a device that takes out and supplies printed circuit boards one by one from stacked printed circuit boards to an automatic component mounting machine.

The printed circuit board supply device 31, as shown in FIG. 2(a),
A roller conveyor 91 and a stacking section 8 that shifts and stacks printed circuit boards l on the A stage of the roller conveyor 91.
, a vacuum suction device 7, a scraping section 2, and a supply conveyor 92 with a B stage.

The stacking section 8 includes a dispensing push plate 81 and an alignment stopper 82.
, a shift and push plate A83, a same plate B84, and their drive mechanisms (not shown).

The vacuum suction device 7 is composed of a suction head 71, a rising/lowering cylinder 72, a moving mechanism and a vacuum pump (not shown).

The scraping section 2 has a configuration in which a roller 21 and a stopper 22 are disposed facing each other with the same distance as the thickness of the printed circuit board 1.

The operation of this printed circuit board supply device 31 is such that the printed circuit boards 1 are discharged from a stocker (not shown) to a roller conveyor 91 in a stacked state, and a vertical delivery push plate 81 that is movable in the conveying direction on the roller conveyor 91 is used. is pushed a predetermined distance by, at the A stage position, the front of the alignment stopper 82 has two perpendicular planes, an X plane and a Y plane, and the X plane thereof;
The rear part is sandwiched between the dispensing push plate 81 and is arranged with an appropriate gap.

Next, as shown in FIG. 2(b), as shown in FIG. Shifting push plate A8 provided opposite to the mating related position
The stacked printed circuit boards 1 are sandwiched between 3 and the same board B84, and stacked in a triangular waveform on the end face, with the direction of each plurality of boards changed in the X-axis direction and alternately shifted.

This shift is 1.2 mm so as to be suitable for the diameter of 0.4 to 1.2 mm of the through hole 11 of the printed circuit board 1 with a board thickness of 1.6%.
2 mi 1. Since the mounting grid of the printed circuit board 1 is 2.5 mm, the through holes 11 do not overlap.

Incidentally, after shifting and stacking, both the shifting and pushing plates A83 and B84 retreat to a position where there is no problem in suctioning and taking out the printed circuit boards 1.

As a result, the printed circuit boards 1 are stacked on the A stage so that the four sides of the stack are the two sides of the payout push plate 81, the alignment stopper 82,
The through holes 11 are stacked and aligned so that they do not overlap in the X-axis direction, and even if the number of stacks becomes large, stacking can be performed without protruding from the width of the roller conveyor 91. .

Next, the suction head 71 moves, and the raising/lowering cylinder 72 operates to suction the print 1 and the substrate 1 from above, lift it up to a predetermined height, and move it horizontally in the Y direction. When passing through the scraping section 2 provided on the upper edge of the X plane, the roller 21 of the scraping section 2 and the stopper 2
Since the facing interval of 2 is equal to the thickness of the printed circuit board 1,
Even if multiple boards are suctioned at the same time, only the printed circuit board 1 and the printed circuit board 1 that are suctioned at the top can pass, and the printed circuit board 1 that is suctioned at the bottom at the same time hits the stopper 22 and cannot pass and falls to the A stage. , pile up again.

The number of sheets to be suctioned is two due to the shift, but in rare cases it is three, but failures in suction have almost disappeared.

In this way, only the topmost printed circuit board 1 that has been sucked is B.
It is carried to the stage, released from suction, and transferred.

The above embodiment shows an example, and the stacking is performed in the X-axis direction, but the stacking is performed in the X-axis direction by providing a tilted slope on the X surface of the alignment stopper 82 and the pushing surface of the dispensing push plate 81. There is no problem with that.

〔Effect of the invention〕

As described above, with the feeding device of the present invention, the number of suction failures caused by sucking up a large number of sheets can be reduced to 1710 or less compared to the conventional device, improving the operating rate of the device and reducing the number of handling workers. Yes, the effect is remarkable.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the principle of the present invention, FIG. 2 is an embodiment of the present invention, and FIG. 3 is a conventional example of a single printed circuit board separation and supply device. In the figure, 1 is a printed circuit board, 2 is a scraping section, 3 is a printed circuit board separation and supply device, 7 is a vacuum suction device, 8 and 85 are stacking sections, 11 is a through hole, 21 is a roller, 22 is a stopper, 3L35 is a printed circuit board feeding device, 71 is a suction head, 72 is a lifting/lowering cylinder, 81 is a dispensing push plate, 82.86 is an alignment stopper, 8
3 is a shifting and pushing plate A, 84 is a shifting and pushing plate B, 87 is an alignment pushing plate, 91 is a roller conveyor, and 92 is a supply conveyor. -271= Print Ichika 1 of the recent past - Separation candy device 1 3
figure

Claims (1)

[Claims] The printed circuit boards (1) stacked on the A stage are sucked from above, and while being sucked, the rollers (21) and stoppers (
22) A single printed circuit board separation/supply device that passes through a scraping section (2) whose distance from the printed circuit board (1) corresponds to the thickness of the printed circuit board (1), separates it into only one sheet, and then transfers it to the B stage. In (3), the printed circuit board single sheet separation supply is provided with means for stacking the printed circuit boards by shifting them in at least one direction so that the through holes (11) provided in the printed circuit boards (1) do not overlap. Device.