JPS6322640B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable to resistors, capacitors, and other small electronic components (hereinafter referred to as (simply abbreviated as "chip") into each chip loading hole of a jig board in various automatic chip mounting devices in a normal posture and polarity alignment state.
The present invention relates to a special configuration of the chip loading hole of the jig board and a related configuration of a specific installation position of the lower end of the drop tube with respect to the chip loading hole.

Recently, various types of automatic chip mounting devices have been used to automatically and accurately position (mount) the chips on printed circuit boards, and to properly bond the chips to the printed circuit boards in this state. ing.

The automatic chip mount device is a device that has 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 feeds the chips to each chip loading hole on the jig board. The jig board loaded with the chips is moved to a set position, and the chips loaded on the jig board are transferred to a large number of holes configured to match the positions of each loading hole of the jig board at this position. It is adsorbed to each suction port of the suction head equipped with a suction port,
Transfer the chips to the printed circuit board in their arranged state, release the suction, and place each chip on the printed circuit board with adhesive applied to the chip mounting points in advance in the same position as the jig board. After the adhesive is dried, the chips are transferred to a soldering bath or the like in the mounted state, and each chip is appropriately bonded to the printed circuit board.

As mentioned above, the chip loading hole on the jig board is
It is necessary to install the same number of chips as the number of chip mounts on the intended printed circuit board at each corresponding position, and the number of chips ranges from several tens to several hundred.

Accordingly, in the above-mentioned appropriate chip mounting device, the automatic chip separation and supply loading device which is a part of the device, for example, the separation and supply section equipped with a plurality of chip input hoppers and drop tubes, and each chip loading hole of the jig board. Chips are dropped and loaded into each chip loading hole by an automatic chip separation and supply device consisting of a distributor, etc., in which each drop tube is arranged according to the position of the drop tube (e.g. distributor). When loading chips from the lower end of the user's drop tube into each chip loading hole of the jig board, the chips must be loaded in a normal position and with polarity aligned.

(a) Since the chips are extremely small and lightweight (e.g., diameter 2 mm, length 6 mm, etc.), when they fall into the chip loading hole, they do not settle properly on the bottom of the hole, but are tilted so that they rest against the surrounding wall surface. I often end up standing there. Conventionally, when loading in this bad posture, we have added vibration to the jig board to correct it to the normal posture, but this has not always been possible, and If this continues, it will not be properly attracted to the suction port of the suction head in the next step, causing the suction port to fall off, which will have the serious consequence of falling off from the mounting on the printed circuit board.

(b) Also, some chips have + and - polarities (e.g. diodes, tantalum capacitors, etc.), and these polarized chips naturally have a fixed polarity position on the printed circuit board. In the chip loading hole of the jig board, there is also an important objective that chips must be loaded in the same directional position and polar alignment as on the printed circuit board.

Regarding a device for detecting the polarity of chips, ie, arranging + or -, and feeding the chips to the falling tube with the + pole facing downward or upward, the applicant of the present application previously disclosed patent application no. No. 167385, a patent application has been filed for the name of the invention and a device for measuring chip polarity.

The present invention has a special structure for the chip loading hole of the jig board in order to load the chips into the chip loading hole of the jig board in a normal position, in a correct posture, and aligned in the correct polarity direction. The installation position of the opening at the lower end of the drop tube for dropping and supplying chips to the chip loading hole is specified in relation to the special configuration of the chip loading hole, so that the polarity can be maintained evenly and stably in the normal posture of the chip at all times. It enables aligned loading and eliminates the drawbacks of the conventional method.

Hereinafter, embodiments of the present invention will be described. In an appropriately configured automatic chip mount apparatus,
In a jig board A provided with a plurality of chip loading holes 1 in the shape of rectangular box holes, etc., the chip loading holes 1 of the jig board A are
The lower end opening 2' of the drop tube 2 (for example, the drop tube 2 of distributor B) that supplies the chips t vertically with the same polarity to the inside,
One end above the chip loading hole 1 (illustrated example, right end)
On the other hand, at the opposite end (first illustrated example, right end) of the lower end opening 2' of the drop tube 2 on the horizontal bottom surface 3 of the chip loading hole 1,
A small suction hole 4 is bored in the left end (left end), and the chips t that have fallen into the chip loading hole 1 are pulled onto the horizontal bottom surface 3 by the vacuum suction force of an appropriate vacuum suction device from the small suction hole 4. The drop tube 2 on the bottom surface 3 of the chip loading hole 1 is forcibly attracted to the top so that the chips t are loaded into the chip loading hole 1 in a horizontal normal position and in a state of polar alignment. Installation position of the lower end opening 2' (illustrated example,
A part of the side opposite to the right end) is the horizontal part, and a majority part of the opposite side (second illustrated example, left side) is the inclined part 3.
As a, the chip t that has fallen into the hole 1 is introduced into the inclined part 3a with its polarity direction (for example, + facing downward), and the chip t is installed so as to be loaded at an angle, and then the chip t is loaded into the suction head 5 in the next process. When the chip is vacuum-suctioned to the suction port 6, the vacuum suction effect caused by the downward approach of the tip of the suction port 6 causes the chip to be posture-controlled to a correct horizontal posture on the horizontal portion, and to be in a normal posture with polarity alignment. A columnar body 7 having an inclined upper surface 3b is installed on the horizontal bottom surface 3 of the chip loading hole 1 so as to be vertically movable, for example, by a base plate 8. The columnar body 7 is fixed in an upright position, and the base plate 8 is moved up and down to move the columnar bodies 7 of each chip loading hole 1 up and down at the same time. t
is introduced onto the inclined part 3b in the raised position with its polar direction (for example, + pointing downwards), and once received in the inclined position, the columnar body 7 is lowered and the chip t is placed on the horizontal bottom surface. 3, which is loaded in a horizontal normal position and in polar alignment,
(Third figure shown) The bottom surface 3 of the chip loading hole 1 is formed into an inclined surface 3c, and a small hole 9 is formed at the lower end of the inclined surface 3c.
A pin 10 is installed in the small hole 9 so as to be movable up and down by an appropriate means, and for example, similarly to the columnar body 7, the pin 10 is fixed to the base plate 11,
The base plate 11 is moved up and down to move the pins 10 of each chip loading hole 1 up and down simultaneously, and the chips t that have fallen into the chip loading hole 1 are removed.
is introduced onto the inclined surface 3c with its polar direction (for example, + pointing downward) and once received in an inclined position, the pin 10 is raised to a position horizontal to the upper end of the inclined surface 3c, and the chip t is It is designed to be loaded in a normal horizontal position with polarities aligned (as shown in the fourth figure).

In the present invention, in the above-described configuration and operation, the chips fall vertically to a specific position at one end of the chip loading hole with all the chips having the same polarity direction, and all of the chips fall into the above-mentioned ~. After being introduced into the specified posture state for each of the various special configurations of the chip loading holes described above, due to the above-mentioned special effects of the chip loading holes for each of these special configurations, the chips are brought into a polar alignment state in a horizontal normal posture. Since corrective loading is possible, each chip loaded correctly according to the present invention can be properly attracted to the suction head in the next process, and therefore can be mounted on a printed circuit board in the correct orientation and in the correct polarity direction. It exhibits excellent efficacy.

As described above, the present invention mainly uses chips that fall vertically, all with the same polarity direction, at a specific position at one end of the chip loading hole.
The explanation is about inserting the chip into the chip loading hole with its polarity as it is, and then correctively loading the chip in a horizontal normal position. Of course, corrective loading of chips that do not require polarity alignment or have no polarity can be accomplished quite easily.

[Brief explanation of the drawing]

1 to 4 each show the configuration of an embodiment of the present invention, and A and B in FIG. A and B in Fig. 2 are partial cross-sections and action explanatory diagrams of an embodiment in which a sloped portion is provided on the bottom half of the chip loading hole, and A and B in Fig. 3 have a sloped portion on the bottom surface of the chip loading hole. Partial cross-section and action explanatory diagram of an embodiment in which the columnar body is installed vertically movably, A and B in Fig. 4 are examples in which the bottom surface of the chip loading hole is an inclined surface and a pin is installed in the small hole in a vertically movable manner. It is a partial cross section and an action explanatory diagram. Code, A... Jig board, B... Distributor, 1... Chip loading hole, 2... Falling tube,
2'... lower end opening, 3... bottom surface, 3a...
Inclined part, 3b... Inclined part of columnar body 7, 3c... Inclined part, 4... Small intake hole, 5... Suction head, 6... Inlet port thereof, 7... Columnar body, 8... Base plate, 9...Small hole, 10...pin, 11...base plate.

Claims (1)

[Claims] 1. In a jig panel for an automatic chip mount device,
The lower end opening of the drop tube, from which the chips fall vertically with the same polarity direction, is installed offset to one end above the chip loading hole. A small intake hole is drilled at the end opposite to the installation position of the lower end opening of the drop tube, and the chips that have fallen into the chip loading hole are pulled onto the horizontal bottom surface by the vacuum suction from the small intake hole. A jig board for an automatic chip mount device that loads chips into the chip loading hole in a horizontal, normal position and with polarity aligned. 2. On the jig panel of automatic chip mount equipment,
The lower end opening of the drop tube from which the chips fall in a vertical state with the same polarity direction is installed offset to one end above the chip loading hole, while the drop tube at the bottom of the chip loading hole is installed. A part of the side opposite to the installation position of the lower end opening is set as a horizontal part, and a majority part on the opposite side is set as an inclined part, and the chips that have fallen into the hole are introduced into the inclined part with their polarity direction unchanged, and the chips are removed. When the chip is loaded in an inclined state, when the chip is vacuum-suctioned to the suction port of the suction head in the next process, the vacuum suction effect caused by the downward approach of the tip of the suction port causes the chip to be held horizontally on the horizontal part. A jig panel for an automatic chip mount device that is controlled so that chips are attracted in a normal position and polar alignment state. 3. On the jig panel of automatic chip mount equipment,
The lower end opening of the drop tube, from which chips fall vertically with the same polarity direction, is installed offset to one end above the chip loading hole. A columnar body with an inclined upper surface is installed so as to be able to move up and down, and chips that have fallen into the hole are introduced onto the inclined part in the raised position with their polarity unchanged, and once received in an inclined position. A jig board for an automatic chip mount device, which lowers the columnar body and loads chips on a horizontal bottom surface in a normal horizontal position and in polar alignment. 4. On the jig panel of automatic chip mount equipment,
The lower end opening of the drop tube, from which the chips fall vertically with the same polarity direction, is installed offset to one end above the chip loading hole, while the bottom surface of the chip loading hole is placed on an inclined surface. At the same time, a small hole is drilled at the lower end of the slope, and a pin is installed in the small hole so that it can move up and down, and the chips that have fallen into the chip loading hole are placed on the slope with their polarity direction unchanged. This is an automatic chip mount device that loads chips in a normal horizontal position with polarity alignment by raising the pin to a horizontal position with the upper end of the slope after receiving the chip in an inclined position. Topping board.