JPS6331435Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an automatic feeding device for printed circuit boards.

Generally, when manufacturing printed circuit boards, development,
There are various processes such as etching, polishing, and cleaning, and in many cases it is not possible to stack printed circuit boards during each process. It is now arranged. In order to supply printed circuit boards from such a state to devices that perform various types of processing, various types of conveyors are used to load and supply printed circuit boards one by one as they are obtained. Therefore, there were disadvantages in that it required labor and increased cost.

This invention solves this problem and allows easily held printed circuit boards to be automatically held on a chain conveyor and automatically fed, thereby significantly reducing labor and cost. The present invention provides an automatic supply device for printed circuit boards.

An embodiment of this invention will be described below with reference to the drawings.

In one embodiment of this invention shown in FIGS. 1 to 9, a rack 91 for holding a printed circuit board 90 is in the form of a flat plate, and has a number of grooves 92 extending horizontally in parallel with each other at predetermined intervals on its upper surface. There is. The printed circuit board 90 is held by inserting its lower end into the groove 92, and is held so that its width is larger than the width of the rack 91 and protrudes from both sides of the rack 91. 10 is a frame. Reference numeral 11 denotes a belt conveyor placed on the upper part of this frame and driven in the direction of the arrow in FIG.
The belt 15 has a pair of stepped portions 16 which are mounted on the belt and whose upper surface side is supported by a support plate 14 and which have a double structure on both sides and protrude outward. This belt conveyor 11 constitutes a transport means for supporting and transporting racks 91 holding a large number of printed circuit boards 90. Rack 91
With the printed circuit board 90 disposed perpendicular to the traveling direction, both sides engage with the steps 16 of the belt 15 and are intermittently transported only in a predetermined direction by an electric motor (not shown). There is.

Reference numeral 17 denotes a lowering device, which is constructed as described below. That is, reference numeral 18 denotes an electric cylinder that is rotatably supported by a pin 21 provided on a support member 20 disposed opposite to the frame 10 and extends almost vertically at all times, and has a pair of pillars 22 built in from the upper end. It is designed to be able to move forward and backward at the same time by an electric motor (not shown). 23 is an air cylinder,
The connecting member 24 is connected to the electric cylinder 18 so that the electric cylinder can be tilted in the direction shown by the chain line in FIG. 1 and returned to the vertical position. Reference numeral 26 denotes a mounting plate fixed to the upper end of the support column 22. A pair of shafts 27 extending parallel to each other in the front-rear direction are fixed to both sides of the upper surface, and an air cylinder 28 is fixed to the center part. Reference numeral 30 denotes a support stand in which four legs 31 are each guided by a shaft 27 and are movable forward and backward by a piston 32 of an air cylinder 28, and both sides have side edges 33 extending slightly upward. With the mounting plate 26 in its highest raised state, the rack 91 delivered from the belt conveyor cylinder 11 can be placed between the side edges 33 and received. After this reception, driving of the belt conveyor 11 is stopped. When receiving the rack 91, the piston 32 protrudes rearward, and after receiving the rack 91, the air cylinder 28
By pulling the rack inward, the rack 91 is further slightly advanced so that it comes into contact with the stopper 35 integrated into the frame 10, as shown by the chain line in FIG. The rack 91 that has slipped and abutted against the stopper 35 is prevented from moving in the opposite direction due to reaction. In this case, the support platform 30 reaches the position indicated by 30a in FIG. After this state is reached, the electric cylinder 18 is operated to lower the support column 22, and the support base 30 is lowered to the position shown at 30b in FIG. 1 in that position. In this case, the width of the mounting plate 26 and the support stand 30 is narrower than the width of the printed circuit board 90, so that the printed circuit board 90 is lowered together with the rack 91 with both sides protruding outward.

Reference numeral 36 denotes a chain conveyor, which is constructed as follows. That is, reference numeral 37 denotes a pair of chains, which are mounted between a pair of sprockets 40 provided on shafts 38 and 39, and are driven intermittently in the direction of the arrow in FIG. 1 by an electric motor (not shown). The interval between the chains 37 is wider than the width of the mounting plate 26 and the support base 30 so that the chains can pass through them in the vertical direction, but is smaller than the width of the printed circuit board 90. Reference numeral 41 denotes a holding member having a pair of protruding parts 42 arranged in front and behind in the traveling direction, which are attached to each chain 37 at opposing positions so as to protrude outward with the same centerline interval as the centerline interval of each groove 92 of the rack 91, and each protruding part is bent so that its tip expands outward. When the chain 37 stops, the holding member 41 comes directly under each printed circuit board 90 supported by the rack 91 that is in contact with the stopper 35 by the operation of a limit switch (not shown), and stops.
When the support base 30 or rack 91 passes between the chains 37 and descends, the printed circuit board 90 held by the support base 30 is inserted at both lower ends into the holding members 41 and received.
The printed circuit board 90 is supplied to various processing and handling sections by being driven at intervals of 0. Reference numeral 45 denotes a chain rail which supports the chain 37.

The support stand 30, which has been lowered to the position indicated by 30b, is tilted to the position indicated by 30c as the electric cylinder 18 is tilted by the operation of the air cylinder 23.
In this case, the rack 91 begins to move downward due to its inclination and inertia. 46 is this easy 9
A non-driven roller conveyor that is inclined downwardly so as to receive and lower the racks takes out the racks. As the rack removal means, a belt conveyor or roller conveyor driven by an electric motor so as to be able to transport the racks in a horizontal direction may be used. When the rack 91 is separated from the support stand 30, the electric cylinder 8 is returned to the vertical state by the air cylinder 23, and as soon as the printed circuit board 90 supported by the chain 37 is removed from above, the support column 22 is raised and installed. The plate 26 returns to its initial state, and at the same time, the piston 32 of the air cylinder 28 protrudes and the support base 30 returns to its initial position. In this state, the belt conveyor 1 will be moved again.
1 is driven and the support stand 30 is attached to the next printed circuit board 9.
The rack 91 holding 0 is received and the same operation is repeated.

As mentioned above, this invention uses a rack 9 that holds the printed circuit board 90 so as to protrude from both sides.
1 is held at a predetermined position in the lowering device 17 and lowered, and during this lowering movement, the rack 9 of the printed circuit board 90
A pair of chains 37 provided with holding members 41 for inserting and holding parts protruding from both sides of chain 1, respectively.
The chain conveyor 36 having the rack 91 receives and sends out only the printed circuit board 90, and the lowering device 17 moves up again after removing the rack 91 and repeats the same operation.
The printed circuit board 90 held on the rack 91 can be automatically supplied, which has the effect of significantly reducing labor and cost.

Various modifications can be made to this invention. For example, a belt conveyor 1 serving as a transportation means
1 instead of a roller conveyor 5 provided with a number of driven rollers 51 as shown in FIG.
0, the rack 91 is received in the state shown by the solid line using the support stand 52 with a stopper 53 formed at one end near its tip, and as the rack 91 is lowered by the driving state of the roller conveyor, the rack 91 is moved as shown by the chain line. It may be moved to a position where it engages with the stopper 53 and held at a predetermined position. Therefore, the stopper 35 fixed to the air conveyor 28 or the frame 10 may not be used.
Further, the lowering device 17 is configured so that it can only be raised and lowered and cannot be tilted, and when the rack 91 is to be taken out, the rack 91 is moved onto the roller conveyor 46 by a device operated by an air cylinder or the like (not shown) provided on the frame 10. It is also possible to move it in the opposite direction. Further, in this invention, the conveying means such as the belt conveyor 11 and the rack take-out means such as the roller conveyor 46 may not be provided in the apparatus of this invention, but may be provided in other apparatuses.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway or removed front view of an embodiment of this invention, FIG. 2 is a partially cutaway or removed plan view, and FIG. A sectional view, FIG. 4 is a front view showing a part of the rack that supported the printed circuit board on the belt conveyor, FIG. 5 is a BB sectional view in FIG. 4, and FIG. 6 is a C-- C sectional view, 7th
The figure is a front view showing a part of the chain conveyor, Figure 8 is a plan view of a part of the chain conveyor, and Figure 9 is a front view showing a part of the chain conveyor.
The figure is an exploded perspective view of a part of the chain conveyor, and FIG. 10 is an explanatory view of a partially modified embodiment. 10 is a frame, 11 is a belt conveyor serving as a transfer means, 17 is a lowering device, 18 is an electric cylinder, 22 is a column, 23 is an air cylinder, 28
30 is an air cylinder, 30 is a support base, 36 is a chain conveyor, 41 is a holding member, 46 is a roller conveyor serving as a means for taking out racks, 90 is a printed circuit board, 91 is a rack, and 92 is a groove.

Claims (1)

[Claims for Utility Model Registration] 1. A rack having a flat plate shape and having a plurality of grooves arranged parallel to each other at predetermined intervals on the upper surface and extending in the horizontal direction, the lower end portions of a plurality of printed circuit boards are connected to the grooves, respectively. A device for taking out each printed circuit board from a state where it is inserted and held in a rack and feeding it by a chain conveyor having a pair of chains, wherein the width of the printed circuit board is larger than the width of the rack and protrudes from both sides of the rack. a lowering device for receiving and lowering the rack holding the printed circuit board; the chains of the chain conveyor are spaced apart so that the racks supported by the lowering device can be raised and lowered; Further, each chain of the chain conveyor is provided with holding members arranged facing each other at a predetermined interval so as to insert and hold the lower ends of both sides of the descending printed circuit board, and furthermore, the rack is removed from the descending device. The automatic feeding device for printed circuit boards, characterized in that, after being removed, the lowering device is again ready to receive the next rack holding the printed circuit boards. 2 Utility Model Registration Scope of Claims 1. The device as set forth in claim 1, further comprising a transport means for transporting the rack holding the printed circuit board to a position where the lowering device receives the rack, and the printed circuit board is transferred from the lowering device to a chain conveyor. 1. An automatic printed circuit board supply device comprising rack take-out means for receiving and sending out racks after being transferred.