JPS649759B2 - - Google Patents

Description

[Detailed Description of the Invention] Recently, various automatic chip mounting devices have been used to mount resistors, capacitors, etc., from cylindrical shapes (cylindrical shapes, cylindrical shapes, etc.) to plate shapes (square plate shapes, disk shapes, etc.). automatically places (mounts) small electronic components (hereinafter simply referred to as chips) on printed circuit boards,
In this state, the chip is appropriately bonded onto a printed circuit board.

The automatic chip mount system basically consists of a separate jig board with a large number of chip loading holes set according to the placement positions of the chips on the printed circuit board, and chips being fed to each chip loading hole on the jig board. Load it and
Move the jig board loaded with the chip to the set position,
At this position, the chips loaded on the jig board are sucked into each suction port of the suction head, which is equipped with a large number of suction ports configured to correspond to the positions of the respective loading holes on the jig board, and the chips are checked in the arrangement state. Transfer the chips to the printed circuit board, release the suction, and mount each chip accurately on the printed circuit board, on which adhesive has been applied to the chip mounting points in advance, in the same position as the jig board. After gluing and then drying the adhesive,
The chips are transferred in their mounted state to a soldering bath or the like, and each chip is appropriately bonded onto a printed circuit board.

The device of the present invention is used to load each chip on a jig board in an automatic chip mount device for plate-shaped (square plate-shaped, disc-shaped) small electronic components (hereinafter simply referred to as chips) among the automatic chip mount devices described above. It relates to a chip separation, supply and loading device which is a device for supplying and loading chips to each hole, and it is also a tape that winds up a chip tape in which the chips are placed (taped) at equal intervals on a long and narrow carrier tape. It is equipped with a number of reels for different purposes, and separates one chip from the chip tape pulled out from each tape reel.
The purpose is to supply and load this to the jig panel, but in this case, the target number of pieces to be supplied to the jig panel (for example, 180
It is completely impossible to do this with all the equipment (individuals) in one place due to installation space and other considerations.

Therefore, in the present invention, first, the maximum number of tape reels to be installed is vertically stacked and arranged as allowed by the space and the number of types of chips required (for example, 60 pieces, or 60 types); Then, the same number of wheels as tape reels (for example, 60 wheels) are installed horizontally on the central axis so that they can freely rotate at a certain angle (for one frame), and each wheel and tape reel are installed horizontally relative to each other. Chip tape was wrapped around the wheel, and a separating and supplying member for separating individual chips from the chip tape was provided at a fixed position inside the wheel, and one drop tube was established for each wheel to supply the separated chips. The falling tube establishment plate is simultaneously rotated at a certain angle with each wheel, and the chips of the number of separated and supplied drops x number of rotations at a certain angle (for example, 60 pieces x 3 times = 180 pieces) are lowered. Even if there are a large number of drop tubes in the distributor that feed the chips to the jig board, the space required is small. , install the same number of drop tubes (e.g. 180) as the expected maximum number of intended chip loading holes on the jig board, and place them at a fixed angle (e.g.,
4.5°) For each rotation, the number of chips equal to or less than the number of wheels (i.e., the number of tape reels) is separated and loaded in the order of the falling tube of the falling tube establishment plate → the distributor → the chip loading hole of the jig board, In addition, the number of wheels must be added to the number of rotations per constant angle for loading chips onto the same jig board (for example,
3 times) (60 x 3 = 180) chips can be separately supplied and loaded.

In addition, due to changes in the jig board (i.e. printed circuit board) to which chips are fed and loaded, the distributor may be replaced as appropriate with one of the same basic configuration with only the number and arrangement of drop tubes changed accordingly. and use it.

The structure of the present invention will be explained below. The device of the present invention consists of a chip separation and supply wheel part A and a falling tube establishment plate B, which rotate integrally at a certain angle, and a falling tube establishment plate B and a jig board D. A replaceable distributor C installed at a fixed position between the chips is arranged vertically, and the same number of tape reels R are horizontally opposed to each wheel 1 on the side of the chip separation supply wheel section A.
The chip separation and supply wheel section A has a plurality of wheels 1, each of which has a chip tape 3 wrapped around the circumferential surface, installed horizontally on a central shaft 2 so as to be rotatable at a certain angle.
Separation supply member 5, such as a pin operated by a cam plate, which separates and supplies the chips t of the chip tape 3 one by one into the drop tube 4 at a fixed position inside each wheel 1 (a position facing the tip of the drop tube 4 described later) The same number of falling tubes 4 as the wheels 1 are placed on the falling tube standing plate B installed at the lower end of the concentric shaft 2.
(For example, made of only metal thin wire, etc., or made of metal thin wire, etc. and connecting flexible pipes.), and
The tips of the individual drop tubes 4 are located close to the installation position on the circumferential surface of each wheel 1, and the tip of the chip separation supply wheel section A and the drop tube 4 are arranged in an established manner with the drop tube establishment plate B as the center. It is constructed so that it rotates simultaneously and integrally at a certain angle a set number of times around axis 2, and then returns to its original position all at once. Then, the tape reel R is installed, and the chip tape 3 pulled out from the reel R is
is provided around the circumferential surface of each wheel so that one chip is transferred to the relative position of the tip of the drop tube 4 each time the wheel 1 rotates by a certain angle (one frame feed). Upper and lower plates 6 and 7 are arranged parallel to each other around the axis Y of the central shaft 2, and the upper ends of the same number of falling tubes 8a as the falling tubes 4 of the above-mentioned falling tube establishment plate B are connected to the upper plate 6 as a falling tube establishment plate. The axis Y is opposite to and communicates with the lower end of each drop tube 4 installed on the concentric circle _R1 of B.
At the same time, with the upper end installation position of this drop tube _8a as the basic position, drop tubes 8b, 8c... are installed at symmetrical positions at fixed rotation angles on the same concentric circle _R2 , with the upper ends open. In other words, the number of drop tubes equal to the number of basic positions multiplied by the number of constant angle rotations is installed, and the lower ends of each of these drop tubes 8a, 8b, 8c...
The lower plate 7 is provided with an opening at a position facing the chip loading hole 9 in the jig board D, and the distributor C is configured to be replaceable with a distributor C having the same basic configuration, so that the chips can be separated. The chips t of the chip tape 3 wrapped around each wheel 1 of the supply wheel section A are separated and supplied one by one by a separation supply member 5 such as a pin,
Chips are transferred and dropped from the tip of each drop tube 4, transferred and dropped from the bottom end of the tube 4 to the top end of the drop tube 8a of the distributor C, and then loaded into the chip loading hole 9 of the jig board D from the bottom end of the tube 8a. In addition, the chip separation and supply wheel section A and the falling tube establishment plate B are rotated simultaneously and integrally at a certain angle, and apart from this rotation, each wheel 1 of the chip separation and supply wheel section is rotated at a certain angle (a constant angle). Each time the separation supply member 5 is operated, the chips are supplied to the drop tube groups 8b and 8c installed at symmetrical positions at fixed rotation angles on the distributor C, and then the chips are supplied to the jig board D. The chips t are dropped and loaded into the other chip loading holes 9 in the same manner as described above, and the chip separation and supply wheel section and the drop tube establishment plate rotate and return to their original positions at once after rotating a set number of times. Then, the above operation is repeated for new jig boards that are successively fed under the distributor C.

FIG. 1 shows an example of the overall configuration of the device of the present invention and its peripheral equipment. Reference numeral 10 denotes a drop sensor attached to each drop tube 4 of the drop tube establishment board B, and a drop sensor 10 is attached to each drop tube 4 of the drop tube establishment plate B. 15 is a reel for winding up the empty tape from which the chips have been separated.

Reference numeral 11 denotes a line sensor which detects whether or not chips t are loaded in all chip loading holes 9 of the jig board D.

Reference numeral 12 denotes a suction head, which picks up all the chips t to be loaded from the jig board D at once and descends after the jig board D returns to mount the chips t onto the printed circuit board E.

The printed circuit board E on which the chip t is mounted (bonded with adhesive) is then conveyed from the adhesive drying furnace to the solder tank by the conveying device 13 to complete the chip mounting.

In addition, in a practical embodiment of the device of the present invention, it is assumed that the number of chip loading holes on the jig board (i.e., arranged in the same manner as the printed circuit board) is, for example, 180 at most.
The number of wheels in the chip separation supply wheel section A (the same number for the tape reel R) is 60, the number of falling tubes 4 on the falling tube establishment plate B is 60, and the number of falling tubes 8a on the distributor C is 60.
8b, 8c... are arranged and installed according to the number (e.g., 180) and position of the chip loading holes 9 on the jig board D, and the chip separation and supply wheel section A and the falling tube establishment plate B are rotated at a certain angle. For example, 3 times,
Falling tube 8 of 180 distributors C
The chips are supplied to the chip loading holes 9 of the jig board D from 180 chips a, 8b, and 8c and are loaded by dropping.

However, for example, with three constant angle rotations,
Even if 180 pieces can be fed and loaded, depending on the configuration of the jig board D, etc., the drop tubes 8a and 8b may be fed and loaded with 60 pieces the first time, 58 pieces the second time, and 45 pieces the third time. , 8c and the number and position of the loading holes 9 can be selectively controlled. This control can, for example, rotate or stop (not transfer) the operation of feeding the individual wheels 1 of the chip separation and supply wheel section A one frame, that is, the operation of transferring the chips t to the tip of the drop tube 4, for each individual wheel 1.
By operating a computer program to do so, any number of actions are possible.

In addition, the number of installed wheels and tape reels and the number of falling tubes are completely arbitrary depending on the purpose. The number of chips (i.e. the number of falling tubes) is also completely different, especially the arrangement of the chip loading holes.
Although it is replaced each time, if the configuration is basically the same, it can be installed as a replacement in the device of the present invention and used to change the rotation of the constant angle rotation described above or to perform the same control as described above. Then,
The desired separation, supply, and loading can be performed effectively.

Furthermore, a shutter plate 14 is installed between the falling tube establishment plate B and the distributor C, and the chips that have fallen are separated and supplied every time the upper chip separation and supply wheel section A and the falling tube establishment plate B rotate at a certain angle. , for one cycle (e.g., for 3 rotations,
60 pieces x 3 times = 180 pieces) are stored on the shutter plate, and depending on the timing, shift the shutter plate,
It is also possible to drop and supply all 180 pieces to the distributor C at the same time.

Next, since the explanation in the above example is complicated,
The explanation will be given below in accordance with the simplified embodiment structure and operation diagram of the present invention apparatus shown in FIGS. 1 and 2. In FIG. Distributor C, C indicates jig board D, (1) 3 of the falling tube establishment plate B installed close to the circumferential surface of the three wheels 1 stacked in the chip separation supply wheel section A; Chips t are separated and supplied to the book drop tube 4 by the action of a separating and supplying member 5 such as a one-by-one pin.

The lower end openings of the drop tubes 4 should be installed at equal intervals on the concentric circle R ₁ in relation to the upper plate 6 of the next distributor C, since they rotate at a certain angle in relation to the drop tube establishment plate B. .

(2) Distributor C is installed on the concentric circle R ₂ so that the upper ends of the three drop tubes 8a communicate with the lower ends of the drop tubes 4 of the drop tube establishment plate B on the upper plate 6, and With the installation position of the book drop tube 8a as the basic position, the upper ends of the three book drop tubes 8b and 8c are also installed on the concentric circle R ₂ at symmetrical positions at fixed rotation angles (30 degrees) from this basic position. , install the upper ends of a total of nine drop tubes 8a, 8b, 8c,
The lower ends of these nine drop tubes 8a, 8b, 8c are installed in the lower plate 7 at positions facing the chip loading holes 9 of the jig board D.

(3) With the above configuration, the chips t separated and supplied from the three wheels 1 of the chip separation and supply wheel section A fall through the three falling tubes 4 of the falling tube establishment plate B, and first , drop tubes 8 of distributor C, and are loaded into chip loading holes 9 of jig board D.

(4) Next, when the chip separation supply wheel section A and the falling tube establishment plate B are rotated by a certain angle (30 degrees), each falling tube 4 of the falling tube establishment plate B is rotated.
Since the lower end faces each drop tube 8b of the distributor C, the separation supply member 5
When the chips t are separated and supplied, the chips t fall in the same manner as described above and are loaded into each chip loading hole 9 of the jig board D.

(5) When the chip separation supply wheel section A and the falling tube standing plate B are rotated by a certain angle (30 degrees) again, each falling tube 4 of the falling tube standing plate B is rotated.
Since the lower end faces each drop tube 8c of the distributor C, when the separating and supplying member 5 is operated to separate and supply chips, the chips t fall in the same manner as described above and drop to each chip on the jig board D. The loading hole 9 is loaded.

(6) The jig board D, which has finished loading all the chips into the target chip loading holes through the above-mentioned supply loading by rotating at a constant angle three times, moves to the next process, and a new jig is placed directly under the distributor C. Board D is supplied,
Further, the chip separation and supply wheel section A and the falling tube establishment plate B are simultaneously and integrally rotated back to their original positions, and the above-mentioned action is repeated on a new jig board.

(7) Also, in the above example, as described above, the number of chips to be supplied and the loading position can be controlled by controlling the continuation or stopping of the one-frame feed rotation of each wheel 1 and by changing the number of rotations at a certain angle. (Chip loading hole) can be selectively adjusted.

As described above, the device of the present invention is capable of repeatedly separating and supplying the same number of chips as the wheel from tape reels and wheels stacked in a small space at each rotation at a certain angle, making this device extremely compact. Therefore, there is a great effect that the chip mounting process on a printed circuit board having an extremely large number of chip mounting points can be carried out effectively.

[Brief explanation of the drawing]

Figure 1 is a schematic front view and plan view of an example of the configuration of the apparatus of the present invention, Figure 2 is an explanatory diagram of an example of the configuration and operation of each part of the apparatus of the present invention, and (A) is a chip separation and supply wheel section and a falling tube establishment plate. , B shows the distributor, C shows the jig board, and FIG. 3 is a plan view of another example of the distributor. Number, A...Chip separation supply wheel section, B...
...Falling tube establishment board, C... Distributor, D... Jig board, E... Printed circuit board, Y...
Axis of the central axis, t...chip, R ₁ , R ₂ ... concentric circles centered on the central axis Y, R... tape reel, 1... wheel, 2... center axis, 3... tip tape, 4... ...Falling tube (of the falling tube establishment board), 5...Separation supply member such as pin, 6...
Distributor upper plate, 7...lower plate, 8a,
8b, 8c...Drop tube (of the distributor), 9...Chip loading hole, 10...Drop sensor, 11...Line sensor, 12...Suction head, 13...Transport device, 14...Shutter plate, 15...Empty tape take-up reel.

Claims (1)

[Scope of Claims] 1. A chip separation supply wheel section and a falling tube establishment plate that rotate integrally at a certain angle at the same time, and a freely replaceable distribe installed at a fixed position between the falling tube establishment plate and the jig board. Connect the user and the user vertically,
The same number of tape reels are installed horizontally opposite each wheel on the side of the chip separation supply wheel section. Then, a separating supply member such as a pin is installed at a fixed position inside each wheel to separate and supply chips from the chip tape into the drop tube one by one. Establish and arrange the same number of drop tubes as
is positioned close to the circumferential surface of the chip separation and supply wheel, and rotates the chip separation and supply wheel part and a drop tube erecting plate on which the drop tube is established, simultaneously and integrally about a central axis at a predetermined angle a set number of times. Afterwards, it is constructed so that it can be rotated back to its original position all at once, and a tape reel is installed on the side of the chip supply separation wheel section horizontally opposite each of the wheels.
The chip tape pulled out from the reel is wrapped around the circumferential surface of each wheel so that one chip is transferred to a relative position at the tip of the drop tube every time the wheel rotates at a certain angle, and the distributor is connected to the axis of the central axis. The upper and lower plates are arranged parallel to each other with the upper plate as the center, and the upper ends of the same number of falling tubes as the falling tubes on the falling tube establishing plate are placed on the upper plate so as to face and communicate with the lower ends of each falling tube on the falling tube establishing plate. In addition to installing the drop tube on a concentric circle centered on the axis, the top end of the drop tube is also opened at symmetrical positions at fixed rotation angles on the same concentric circle, with the top end installation position of the drop tube as the basic position. Install a number of drop tubes equal to the number multiplied by the number of rotations at a certain angle, and connect the bottom end of each drop tube to the bottom of the lower plate.
The distributor is provided with an opening at a position facing the chip loading hole on the jig board, and the distributor is configured to be interchangeable with a distributor of the same basic configuration, and is hung on each wheel of the chip separation and supply wheel section. The chips of the chip tape are separated and supplied by the separation supply member, transferred and dropped one by one to the tip of the drop tube, transferred and dropped from the bottom end of the tube to the top end of the drop tube of the distributor, and then transferred from the bottom end of the tube to the tip of the jig board. The chips are loaded into the loading hole, and each time the chip separating and supplying member is operated, the chip separation and supplying wheel section and the falling tube establishment plate are simultaneously rotated integrally to a certain angle, and each wheel is rotated to a certain angle. , the chips are supplied to the drop tubes at symmetrical positions at every fixed rotation angle in the distributor, and the chips are dropped and loaded into other chip loading holes of the jig board in the same manner as above, and the chips are separated and supplied. The part and the falling tube establishment plate are configured to rotate and return to their original positions all at once after rotating a set number of times.
Automatic chip separation, feeding and loading device.