JPS63107100A - Pin inserter - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a pin insertion device used when manufacturing a board for mounting electronic components, so-called a pin grid array, having a large number of conductor pins. In particular, the present invention relates to a pin insertion device for automatically inserting conductor pins into pin insertion holes formed in a pallet corresponding to a board for mounting electronic components.

(Prior Art) In an electronic component mounting board called a pin grid array having a large number of conductor pins, a conductor circuit formed on the board side and a board (usually In order to ensure continuity with the motherboard, multiple conductor pins are attached to this type of electronic component mounting board by inserting or fixing them, and these conductor pins connect the electronic component mounting board to the motherboard. This is to establish electrical continuity with the (See Figure 7) In recent years, with regard to such boards for mounting electronic components, the electronic components mounted on them are becoming smaller and smaller, and there is a strong desire to reduce the overall size after mounting. For these reasons, the shapes of conductor pins themselves used in electronic component mounting boards have become smaller and smaller in recent years. Moreover, even if the conductor bottle is small, it needs to be securely attached to the electronic component MS service board, so its shape is complicated as shown in Figures 5 and 6. The actual size of the conductor pin (70) shown in these figures is 0.5 mm in diameter at its base.
It is about 1 m in length, has a length of several layers, and has a complicated shape with a flange (71) for reliable positioning and support for the substrate. For example, about 20 to 50 such small and complicated-shaped conductor bins (70) must be attached to a 20 mm square board.

In order to attach about 20 to 50 conductor pins (70), which are small and have complex shapes, to a small board, these conductor pins (70) are placed in a predetermined position using a special pallet, etc. In the past, most of this preparation was done manually, whether or not it was necessary to arrange and prepare it in a state. However, manually preparing a large number of small conductor pins (70) in a predetermined arrangement has the inconvenience of extremely low work efficiency. 70) may be accidentally thrown out of the pallet or bent, so various studies have been made to automatically do this by mechanical means.

As a means for automatically arranging such conductor pins (70), there is an automatic pin insertion method as disclosed in Japanese Patent Publication No. 53-9714, for example. That is, this method includes the steps of "introducing an elongated object onto a carrier having a plurality of apertures, and vibrating the carrier to disturb the L object so that it is introduced into the apertures in the carrier. and creating a pressure difference between the upper and lower parts of the aperture, introducing gas into the upper part of the aperture, and sucking the object into the aperture, thereby causing the object to enter the aperture. and periodically reducing the pressure difference to reduce the flow of gas to the top of the aperture, cooperating with the vibration of the carrier to release the clutter. Although this method can achieve a certain degree of inserting the conductor bottle into the desired location, ■ the properties of the gas have not been sufficiently studied, and this method is difficult to use. In the applied equipment, the speed (efficiency) of inserting conductor bins and the removal of conductor pins that did not enter the pallet in the correct condition have not been perfected.

■The shape and properties of the above objects (hereinafter referred to as conductor pins) are not taken into consideration, and it is thought that the conductor pins cannot be handled optimally.

There are still problems like this.

In other words, since gas is a fluid, it takes a certain amount of time to reach a steady state of constant pressure unless some other force is applied. Regarding this, the above-mentioned special public official
When applied to a device that adopts the insertion method shown in Publication No. 714, it takes a considerable amount of time to recover from a depressurized state using atmospheric pressure, so it is possible to shorten this depressurization time. If you try to do this, you have to use a fairly powerful decompression device, and even if you use a fairly powerful decompression device to create a predetermined reduced pressure state, it takes time to reach a steady state of reduced pressure. . Moreover, if one tries to create the above-mentioned reduced pressure state and atmosphere open state within a computationally short time, it is natural that certain limits will arise depending on the properties of the gas used. In other words, there is a limit to the efficiency of inserting the conductor bin.

Further, as described above, the conductor bottle is very small and has a complicated shape, so it is easily deformed. Therefore, when handling such a conductor bottle, care must be taken to avoid deformation of the conductor bottle. The deformed conductor bin is a companion (pallet)
Not only will it not be possible to insert it into the hole, but even if it can be fixed to the board, the position will not match and the board itself will be considered a defective product.

Examining how the above-mentioned conventional technology deals with conductor bottles having such properties, it is found that from the 23rd line of the right column on page 5 of the above-mentioned Japanese Patent Publication No. 53-9714,
The excess object removal device (190) is energized so that as the frame (192) moves toward the right in FIG. 9, excess objects (conductor bins) are forced into the chute (99). The object removal frame (192) is held at the rightmost position where it does not interfere with the descent of the mask (202). ” There is a statement to that effect. What can be understood from this description is that in order to use the excess conductor bins again, the excess conductor bins are pushed to a predetermined position by the object removal frame (192) and collected again. When the conductor bottle is pushed away due to (192), the force applied at that time deforms the conductor bottle and makes it more likely to be damaged. moreover,
Conductor bins used for electronic component mounting boards usually include
If the conductor bottle has been subjected to surface treatment (for example, solder plating) and is subjected to vibrations for a long time using a vibrating device, etc.,
The automatic bottle insertion method shown in Japanese Patent Publication No. 53-9714 does not require specific consideration from these points of view. There is no deliberate effort at all.

The inventors of the present invention have conducted extensive research to solve the problems of the above-mentioned conventional technique #Fi, etc., and have found that the pressure difference when inserting the conductor bottle into the pallet can be further improved. In order to prevent damage to the conductor bins, it is not appropriate to collect surplus conductor bins and use them again, and to avoid damage to the conductor bins. The present invention was completed based on the new knowledge that it is better to minimize the supply of conductor bottles and consume them as soon as possible.

(Problems to be Solved by the Invention) The present invention has been made based on the above-mentioned circumstances. This is damage or deformation of the bottle itself.

9. The purpose of the present invention is to: 1. Not only can the pin insertion work be performed automatically, but also the pressure change for inserting the conductor bottle can be actively created to insert the conductor bottle. (b) To provide a bottle inserting device which allows the conductor bottles to be quickly consumed with the minimum amount of supply, thereby causing very little damage or deformation of the conductor bottles.

(Means for Solving the Problems) Unexplored means for solving the above problems will be explained with reference to FIGS. 1 to 5 corresponding to the embodiments. An airtight box (lO) that is connected to the vibration device! (+3) and arranged so that it can vibrate with respect to the base (1■), and that houses the pallet (60) into which the conductor bottle (70) is inserted.
and an opening (21) disposed within the airtight box (10) that can communicate with the pin insertion hole (63) of the pallet (60).
), and a fixing means (30) for fixing the pallet placement table (20),
In a pin insertion device for inserting a conductor pin (70) into a pin insertion hole (63) of a pallet (6o) on a pallet placement table (20).

Suction device M (40
) to the airtight box (lO), and a high pressure gas supply device (80) that intermittently supplies high pressure gas to the airtight box (10) side located below the pallet placement table (20), and A pin insertion device (100) characterized in that a swinging device (50) for swinging the airtight box (10) relative to the base (11) is provided between the airtight box (1o) and the base (11). It is J.

That is, this pin insertion device (100) includes a vibration device (
The pallet arrangement stand (20) is vibrated together with the airtight box (10) by l), and the pins formed on this pallet (60) fixedly support a plurality of baluts (60) at h. The conductor pins (70) are automatically inserted into the respective insertion holes (63).

When inserting this conductor pin (70), insert (suction) the conductor pin (70) into the pin insertion hole (63) of the pallet (60) on the pallet placement table (20).
The pin insertion hole (63) of each pallet (60) is positively created by the joint operation of the suction device a (40) and the high-pressure gas supply device (80).
This pin insertion device fi (100) has conductor pins (70) inserted into each of the pin insertion devices fi (100).

In addition, in this pin insertion device 22 (100), a swinging device for swinging the airtight box (10) with respect to the base (It) is provided between the airtight box (10) and the base (11). By this, the pallet (60) itself is swung by, for example, swinging the entire pallet placement stand (20) placed in the airtight box (lO) from side to side with respect to the vertical plane, and the pallet (60) itself is moved. The conductor pin (70) is made to flow on the surface, which causes the conductor pin (7o) to move onto the pallet (
60) Make sure to evenly cover all the pin insertion holes (63) on the pallet (60).
) so that the conductor pin (70) can be inserted reliably into the inside.

(Aspects of operation and use of the invention) By adopting the above-described measures of the present invention, the following effects can be achieved.

First, when this pin insertion device H (ioo) is used, for example, a pallet (60) consisting of a main pallet (61) and a sub pallet (62) shown in FIG.
(in this example, plural) in an airtight box (10)
After the pallets (60) are placed on the pallet placement table (20) within the pallet placement table (20), the fixing means (30) fixes these pallets (60) on the pallet placement table (20). And a vibration device (13
) to apply vibration to the airtight box (10). In addition, each pallet (60
) are supplied with conductor pins (7o) slightly more than the total number of pin insertion holes (63) of each pallet (60) (minimum supply: 1 it) from above. and,
The inside of the airtight box (10) located below the pallet placement table (20) is kept in a reduced pressure state by the suction device (40) connected to this airtight box (1o).

In addition, in this pin insertion device (100), a pallet placement stand (20) provided inside the airtight box (10)
A high pressure gas supply device (80) that intermittently supplies high pressure gas into the airtight box (10) at a location below the
), this high-pressure gas supply'! By intermittently operating the A position (80), the airtight box (10)
The airtight box (
Even if the area located below the pallet placement table (zO) of the lO) is maintained in a reduced pressure state, this high-pressure gas supply system! (8G), the reduced pressure state caused by the suction device 21 (40) in the airtight box (10) is actively and intermittently released. In other words, the depressurized state is released by intermittent forced gas supply by the high-pressure gas supply device (80). The release can be completed in an extremely short time compared to the conventional release method. This is not due to the natural physical flow properties of the gas, but rather due to the high pressure gas supply! 1 (8
This is because it is carried out by forced supply of gas according to 0).

Furthermore, this pin insertion device! ! (100).

The rocking device (50) moves between the airtight box (10) and the base (11).
), by operating this swinging device (5G), the airtight box (lO), that is, the pallet arrangement stand (20) integrated with it, swings left and right about the vertical plane. . This allows the pallet placement table (20
) Since each pallet (60) placed and fixed on the top swings, each conductor pin (70) supplied on top of the pallet (60) swings.
is moved left and right on each pallet (60) by its gravity.

As described above, each pallet (60) is vibrated and swung, and each bottle insertion hole (63) formed in the pallet (60) is airtightly positioned below the pallet placement table (20). Since the IS is connected to the inside of the box (10), each conductor pin (70) flows left and right due to its gravity, and air flows through each bottle insertion hole (63) to the underside of the pallet placement table (20). It gets sucked in. According to this air flow, each conductor bottle (70) is inserted into the bottle insertion hole (6
3) Since each conductor pin (70) moves relative to the pallet (60), each conductor pin (70)
are automatically inserted into each bottle insertion hole (63) one by one.

Moreover, in this case, by intermittently supplying high-pressure gas with the high-pressure gas supply device (80), only the conductor pin (70) that was not inserted in the normal state is removed from the vibration device at (1).
The vibration caused by 3) causes the bottle to be ejected from the bottle insertion hole (63) of the pallet (60), and the next proper insertion is subsequently performed.

(Example) The present invention will be described in detail below based on an example shown in one drawing.

FIG. 1 shows a partially enlarged vertical cross-sectional view of the pin insertion device z1 (too) related to the unexploited pin 11, and this pin insertion device 22 (too) is shown in FIG.
10G) is used when manufacturing a board for mounting electronic components as shown in FIG. 7, which is called a pin grid array and has a large number of conductor pins (70). This board for mounting electronic components is manufactured by implanting a predetermined number of conductor pins (70) on the board constituting it.
In the previous step, it is necessary to arrange a large number of conductor pins (70) in a predetermined state. This predetermined arrangement is made using, for example, a pallet (60) shown in FIG. Inside the conductor pin (
70) is inserted using the pin insertion device z(to
o).

The bottle insertion device 2!1 (100) includes an airtight box (10) that is connected to a vibration device (13) and arranged so as to be able to vibrate with respect to a base (11); a pallet placement stand (20) formed in the shape and having an opening (21);
, a fixing means (30) for fixing each pallet (60) placed on the pallet placement table (20), a suction device (40) for maintaining the inside of the airtight box (10) in a reduced pressure state, and an airtight box ( 10) to the base (11)
A swinging *ffl (5G) that is supported by a rack and an airtight box (10) located below the pallet placement table (20)
A high-pressure gas supply device 71 (
80).

In FIG. 1, the airtight box (10) is supported so as to be able to vibrate on a base (11) disposed at its lower portion, and the airtight box (10) is supported vibratingly on a base (11) disposed at its lower portion.
Vibration is applied by t21(13). Further, as shown in FIG. 1, a suction port (12) is formed on the lower side of the airtight box (10).
A suction device 21 (40) is connected to this suction port (12).

In addition, inside the airtight box (10), a pallet placement stand (2
0) is formed. The upper surface of this pallet placement table (20) is formed so that when each pallet (60) described below is placed on it, these form one plane, and a predetermined portion of the pallet placement table (20) is is multiple apertures (2
1) is formed. As a result, when a large number of pallets (60) are placed on this pallet placement stand (20), each opening (
21) and the upper part of the pallet (60) through pin insertion holes (6). Further, each pallet ('60) placed on this pallet placement stand (20) is secured to the pallet placement stand (20) by a fixing means (30).
) to be fixed and supported.

As shown in FIG. 1, the fixing means (30) includes a holding plate (31) placed on each pallet (60) placed on the pallet placement table (20), and this holding plate (31). It is equipped with a suppression lever (2) that further presses the upper surface of the lever. In the case of this embodiment, the holding plate (1) has an opening (33) corresponding to the pin insertion hole (63) of the pallet (60).
These openings (33) allow each pallet (60
The pin insertion hole (63) in ) is designed to allow mist to be discharged to the outside (upward). In addition, when the presser plate (31) is fixed, the tip of the suppression lever (32) is as shown in FIG.
The fixing means (30) as shown in 6 or more is configured so as not to correspond to each opening (33) of the holding plate (31).
By configuring the pin insertion hole (63) of each pallet (60), the pallet (60)
0) and fixed by the fixing means (c0), they can be exposed to the outside (above) through each opening (33) of the holding plate (31). That is, an airtight box (
The portion located below the pallet placement table (20) in 10) includes the opening (21) of the pallet placement table (20), the pin insertion hole (63) of each pallet (60), and the holding plate (31).
It communicates with the atmosphere through each opening (33) of the airtight box (10), and the part of the airtight box (10) located below the pallet placement table (20) is depressurized by the suction device X1 (4G) connected to the airtight box (10). In this state, insert the conductor pin (70) located on the holding plate (31) into the pin insertion hole (63).
It can be sucked into the body.

The suction device (40) has a suction port (12
), and this suction device (40) continuously suctions the gas inside the airtight box (IO). That is, this suction device (40) continuously suctions gas such as air in the space located below the pallet placement table (20) of the airtight box (lO) from each suction [1 (+z), As a result, each barre) - (6
0) into the pin insertion hole (63
) into a part of the airtight box (!0). As this gas flows into the pin insertion hole (63), the conductor pin (70) located near the pin insertion hole (63) is attracted and inserted into the bottle insertion hole (63).

Further, the airtight box (10) is connected to the base (11) via a swinging device (5Q). The ripping device (50) is
As shown in FIG. 1, the swing shaft (5) is provided directly on the base (11) 1 and constitutes the swing device (50).
1) An airtight box (10) is provided via a spring or the like. Furthermore, the vibration device 21 (+:l) is installed in an airtight box (
10). The swing axis (5■) is a drive motor (M) fixed on the stand C11) side.
It is driven by a drive source and reciprocates around its axis by a predetermined angle via a gear box (52). Thereby, when the rocking 9h device (50) is driven, the entire airtight box (lO) is rocked left and right within a predetermined angle range with respect to the vertical plane.

Further, the high-pressure gas supply device (80) is connected to the airtight box (10) located below the pallet placement table (20).

High pressure gas is intermittently supplied into the airtight box (10) located below the pallet placement table (20).

That is, the high-pressure gas supply device ri (80) forcibly and intermittently supplies high-pressure gas to the airtight box (10) located below the pallet placement table (20) which is maintained in a predetermined reduced pressure state. By doing so, the reduced pressure state within the airtight box (10) is temporarily and forcibly released.

In addition, in the case of this embodiment, the high-pressure gas supply device 2t (80) supplies high-pressure gas. (
80) by setting the activation and stop intervals to 0.2 seconds each. In this way, since this high-pressure gas supply device (80) repeats its operation and stop F within a short time, each pallet of conductor pins (70) (
60) (when the high-pressure gas supply system! (80) is stopped) and removal of conductor pins (70) that are not inserted into each pallet (60) in the normal state (high-pressure gas supply system!
(80) can be carried out repeatedly and within a short period of time, and each conductor pin (70) can be inserted into the pallet (60) with high efficiency. ! l+! In other words, this high-pressure gas supply device (80) releases the reduced pressure state in the airtight box (lO) located below the pallet placement table (20) by using the natural flow of gas as in the conventional open-to-atmosphere type. The pin insertion device (10G) according to the present invention can be configured in a compact manner.

Note that this high-pressure gas supply *1 (80) in this example
As shown in Fig. 1, the high-pressure air is discharged from the suction port (12) formed in the airtight box (10) located below the pallet placement table (20).
When the discharge port of the high-pressure gas supply device (80) is placed near the airtight box (10) side of the suction port (12), the suction device m (
It is advantageous to directly cancel the suction depressurization effect caused by 40). Also, this high pressure gas supply device! The direction of the discharge port (80) is preferably a direction that does not cause energy loss of the discharged high-pressure gas (for example, a direction parallel to the direction of the suction port (12) as shown in Figure 1). Of course, the connection point and the number of connections of this high-pressure gas supply device (80) are not limited to these, and as long as it is a part of the airtight box (10) located below the pallet placement table (20), Appropriate settings are possible.

For example, as shown in FIG. 4, the pallet (60) is composed of a main pallet (61) and a sub-palette (62).
) are integrated by fitting. Note that this integration was performed before the pin insertion bag 1 (ioo), and the pallet (61
1) are stored and arranged on the pallet arrangement stand (20) by appropriate means. In addition, each main pallet (61) and sub-pallet (62) have corresponding pin insertion holes (63).
) is formed, and a main pallet (61) and a sub pallet (61) are formed.
62), each of these pin insertion holes (
6) forms one hole as shown in FIG. The hole formed in this way has a stepped portion, and the collar portion (71) of the conductor pin (70) engages with this step, so that the conductor pin (70) is inserted into the pin insertion hole ( From 63) onwards, nuki will not fall. Note that the main pallet (61) has a hole that does not correspond to the pin insertion hole (63) of the sub pallet (62), but this hole is not connected to the pin insertion bag ff1 (
A conductor pin that is a different device from the conductor pin (70) and has a different shape from the conductor pin (70), or one that is inserted into the pin insertion holes (5) of the main pallet (5]) from which the sub pallet (52) has been removed. It is.

In the above embodiment, the case where the pallet (60) having the pin insertion hole (63) is composed of the main pallet (61) and the sub pallet (62) has been described. The pallet (60) does not necessarily have to have such a configuration, and may be configured as a single unit, that is, it can also be used.

(Effects of the Invention) As detailed above, the present invention is as exemplified in the above embodiments.

An airtight box (1G
), and an opening (2
The pin insertion hole (63) of the pallet (60) on the pallet placement table (20) is provided with a pallet placement table (20) having ) in a pin insertion device for inserting a conductor pin (70) into a pin.

A suction device (40) that continuously sucks the gas in the airtight box (10) located below the pallet placement table (20)
5i, and connect it to the tight box (10).

High-pressure gas supply that intermittently supplies high-pressure gas to the airtight box (lO) located below the pallet placement table (20)! 21(80)wotakl.

Moreover, the device is characterized by the fact that a sliding device (50) for swinging the airtight box (lO) relative to the base (11) is provided between the airtight box (lO) and the base (11). Not only can the pin insertion work be performed automatically, but also the pressure change for inserting the conductor pin can be actively created to efficiently perform the conductor pin insertion work. It is possible to provide a pin insertion device (too) that can consume pins in a minimum supply amount so that damage and deformation of the conductor pins is extremely small.

That is, in this bottle insertion device 2i (100), an intermittent gas flow is sucked to automatically insert the conductor pin (70) into the pin insertion hole (63) of each pallet (60). equipment 21 (40) and high pressure gas supply equipment 9 (80)
), so I actively and forcibly created it.

The conductor pins (70) inserted into each pin insertion hole (6) in an irregular state should be ejected from each pallet (60) within a short time due to the vibration caused by the vibration device fi (13). is coming. Also, at this time,
The entire airtight box (10), that is, each pallet (60), is vertically moved by the swinging motion of the swinging device "21" (511).
The pallet (6
0) Place the conductor pin (70) located on the pallet (60)
The conductor pin (70
) is evenly distributed over the palette (60). As a result, even if the number of conductor pins (70) slightly larger than the total number of pin insertion holes (63) (minimum supply amount) is supplied, the insertion of these conductor pins (70) is ensured. This means that you can do it.

In addition, conductor pins (70
) is usually subjected to surface treatment (for example, solder plating), and the conductor pin (70) is removed by a shaking device or the like! The conductor pin (70) is easily scratched when exposed to long-term motion, and oxidized when exposed to air, but according to the pin insertion device (100) of the present invention, the conductor pin (70) Since it is configured so that it can be consumed in a short time with the minimum amount of supply, not only is there less waste, but also the problem of scratches and oxidation as described above will not occur on this conductor pin (70). While doing so, it can be inserted reliably and automatically into the pin insertion hole (63) of the bullet (60) in a short time.

Furthermore, in this bottle insertion device g(too).

Suction? Since the operation of the opening (40) is always performed in a constant state, the reduced pressure state will be the same for any opening (21) of the pallet placement table (20). Therefore, the pallet placement table (20) itself can be enlarged to accommodate a large number of pallets (60
) are arranged side by side, the required depressurization condition at each opening (21) of the pallet placement table (20) does not change at all, and the conductor pin (70) can be inserted into the pallet (60) efficiently. Moreover, it is possible to provide a pin insertion device (100) with a simple configuration that is effective even when it is desired to speed up the insertion operation.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a pin insertion device according to the present invention, FIGS. 2 and 3 are partially enlarged vertical cross-sectional views sequentially showing changing states of each conductor pin, and FIG. 4 is a pallet that is an embodiment of the present invention. FIG. 5 is an enlarged front view of the conductor pin to be inserted into the pin insertion hole of the pallet by this pin insertion device,
FIG. 6 is a top view of the same, and FIG. 7 is a perspective view IA of the electronic component mounting board. Explanation of code 100--Pin insertion device, IO...Airtight bowx,
11--Base, 12--Suction port, t3--Vibration device, 20--Pallet arrangement stand, 21--Opening, Ko0
...Fixing means, 40--Suction device, S O--Swinging device, 6G--Pallet, 61--Main pallet,
62... Sub pallet, 63-... Pin insertion hole, 70
- Conductor pin, 71... Flange, 72... Head,
80...High pressure gas supply device. Above 4S license applicant IBIDEN Co., Ltd.

Claims (1)

[Scope of Claims] An airtight box that is connected to a vibration device and arranged to be able to vibrate with respect to a base and that houses a pallet for inserting conductor pins; A pallet placement table having an opening capable of communicating with a pin insertion hole, and a fixing means for fixing the pallet on the pallet placement table, and the conductor pin is inserted into the pin insertion hole of the pallet on the pallet placement table. In the pin insertion device for insertion, a suction device that continuously sucks gas in an airtight box located below the pallet placement table is connected to the airtight box, and a side of the airtight box located below the pallet placement table is connected to the airtight box. A high-pressure gas supply device that intermittently supplies high-pressure gas is connected to the airtight box, and a swinging device for swinging the airtight box with respect to the base is provided between the airtight box and the base. Pin insertion device.