JPH0340520B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention applies to electrical components such as resistors and capacitors that do not have lead wires (chip components).
This relates to a chip parts mounting device for mounting chips on a predetermined position on a printed circuit board, and it is particularly easy to replenish chip parts, has good alignment, and is also suitable for replacing parts with different constants even if the parts have the same shape. The purpose of the present invention is to provide a mounting device for chip parts with excellent performance.

For example, as a mounting device for chip parts,
As seen in No. 55-8018, chip parts are loaded in advance into a parts storage container (magazine or cartridge) in an aligned state, and then
A structure is known in which the wires are dropped one by one into a guide pipe and placed on a printed circuit board.

However, in such a configuration, it is necessary to load the chip components in advance in the chip component storage container in a constant alignment and alignment.
As a result, loading took time and was inefficient. Furthermore, the number of chip parts that can be stored in a magazine, etc. is limited by the length of the magazine, and the length of the magazine cannot be made too long from the viewpoint of handling, so the magazine must be replaced frequently when replenishing chip parts. The drawback was that I had to do it.

Also, remove any chip parts that have fallen into the guide pipe.
As shown in Japanese Patent Publication No. 53-44024, it is known that a shutter is provided at the end of a pipe in which chip parts are placed one by one on a printed circuit board. When it becomes necessary to replace parts with different constants, it is not possible to replace the chip parts remaining in the pipe by simply replacing the chip parts storage container.
Therefore, it took a lot of time to replace even the chip parts in this pipe.

In order to solve these conventional drawbacks, the present invention uses a chip parts storage section as a hopper, and uses a chip parts aligning means in the hopper and a shutter that sends the chip parts aligned by the aligning means one by one to a pipe. The present invention will be described below based on practical examples.

Fig. 1 is a schematic side view showing the entire chip parts mounting device, Fig. 2 is a schematic top view thereof, and Fig. 3 is an explanatory view showing the operation of the chip parts mounting device. To explain the overall configuration and operation, 1... is a plurality of hoppers arranged above the device, and the hoppers have electrodes at both ends of the insulating part Ca, as shown in Figure 4. Part Cb, Cb
Column-shaped chip parts C having no lead wires formed therein are stored, and they are prepared in correspondence with the number of chip parts C to be attached to the printed circuit board P.
In the drawing, 12 hoppers 1 are shown, with six hoppers arranged in two rows.

2 is a hopper stand located above the device and supports the hoppers 1 in a replaceable manner; 3... is a support member for fixing the alignment plate 4 to the hopper stand 2; 5... is a support member for supplying chip parts C made of plastic; A hollow pipe is formed to connect the hopper stand 2 and the alignment plate 4, and the hopper 1...
The chip part C sent out from this pipe 5...
It is configured such that it passes through and falls to the alignment plate 4 side.

Reference numeral 6 indicates a support member for fixing the hopper stand 2 to the base stand 7, 8 a movable feed belt, 9 a stand member placed on the feed belt 8, and 10 a lower side placed on the stand member 9. plate, 11 is the lower plate 1
0, the upper and lower plates 11, 10 are provided with holes 11a, . 10a... are provided, and the upper plate 11 is formed of a thicker plate than the lower plate 10, so that it can be moved from above the lower plate 10.

12 is a power source for moving the upper and lower plates 11, 10 and the base member 9 toward the alignment plate 4 side.

Next, the operation of the device of the present invention will be explained with reference to FIGS. 1 and 3. Desired chip parts C are stored in the hoppers 1, and one chip part C is delivered from each hopper 1. It is designed to be sent out. (The feeding mechanism will be described later.) Now, as shown in FIG.
This is lifted by the power source 12 and placed on the alignment plate 4 as shown in FIG. 3A.

Next, each hopper 1...
When one chip part C is sent out from the pipe 5, the chip part C is guided by the pipe 5 and falls into the holes 11a and 10a of the upper and lower plates 11 and 10.
(See Figure 3A) Next, return the power source 12 to its original position, place the upper and lower plates 11 and 10 and the base member 9 on the feed belt 8, and move the feed belt 8 to vibrate it. When given, the chip part C falls sideways using the holes 11a and 10a of the upper and lower plates 11 and 10 as guides, and after the chip part C is turned sideways, the upper plate 11 is removed from above the lower plate 10. . (See Fig. 3B) Then, as shown in Fig. 3B, the chip part C is positioned in the hole 10a of the lower plate 10, and a part of it protrudes from the lower plate 10 of the thin plate. When a printed circuit board P on which adhesive S has been applied in advance to the position corresponding to the position of the chip component C is placed on top of such a state, the chip component C will be attached to the printed circuit board P by the adhesive S. , the chip component C is transferred onto the printed circuit board P, and by immersing the printed circuit board P in a solder bath, the attachment of the chip component C to the printed circuit board P is completed.

By repeating these steps, the chip component C can be automatically attached to the printed circuit board P.

Next, as mentioned above, the feeding mechanism that feeds out the chip parts C stored in the hoppers 1 one by one will be explained based on FIG. The drive rollers are rotatably mounted on bearings 14, 14, and gears 15, 16 meshing with each other are provided at one end of each drive roller 13, 13. Fixed, each gear 1
5, 16 and drive rollers 13, 13 are constantly rotated by a drive source 17 such as a motor via a gear 18.

Further, the hoppers 1 are equipped with an aligning means consisting of an aligning roller 34 and an aligning pipe 38, which will be described in detail later, and a shutter 41, and the aligning roller 34 of each hopper 1 is always in contact with the drive rollers 13, 13. The chip parts C in the hopper 1 are rotated to be aligned and dropped into the alignment pipe 38, and the shutters 41 of each hopper 1 are configured to be interlocked with shutter drive members 19, 19.

That is, 20, 20 are cylinders for driving the shutters, 21... are pistons connected to the shutter driving members 19, 19 and disposed within the cylinders 20, 20, and air or oil is supplied into the cylinders 20, 20. By moving the pistons 21 in and out, the pistons 21... are made to reciprocate.Now, by operating the cylinders 20, 20,
In FIG. 2, when the pistons 21 are moved in the direction of the arrow X, the shutter drive member 1
9,19 moves.

Then, the shutter 41 of each hopper 1 is moved, and one of the chip parts C stored in each hopper 1 falls through the pipe 5.

Thereafter, when the cylinders 20, 20 are operated to return the pistons 21 to their original positions, each shutter 41 also returns to its original position.

By repeating this operation, one chip component C will be sent out from each hopper 1.

Next, the detailed structure and operation of the hopper 1 will be explained with reference to FIGS. 5 to 9. Reference numeral 30 is a main body made of metal, and the main body has a funnel part 30a at the upper part, and A notch 30b extending to the center is provided on the side surface.

Reference numeral 31 denotes an outer cylindrical portion fixed to the upper part of the main body 30 with a screw 32; 33 is a lid that closes the upper part of the outer cylindrical portion 31; Part C is stored.

Reference numeral 34 denotes an alignment roller having a groove 34a provided at the center of the outer circumference and a friction member 34b provided at the outer periphery.
The alignment roller 34 is located inside the main body part 30 and is rotatably attached to the main body part 30 by a support shaft 35, and a part of the alignment roller 34 protrudes outside from the notch part 30b.
I have made it possible to contact 3.

36 is located within the notch 30b of the main body 30,
A sealing member is fixed to the outer cylindrical portion 31 with a screw 32. The sealing member seals the notch 30b in the upper part of the alignment roller 34 to prevent the chip parts C from falling off and also prevents a part of the alignment roller 34 from falling off. is exposed within the funnel portion 30a.

Reference numeral 37 denotes a shutter top plate having an alignment pipe 38 attached to its center, and a recess 37c extending across the center on the lower surface of the shutter top plate. Reference numeral 35 designates a lower shutter plate having a groove 39a and a hole 39b for inserting a chip component C provided at the bottom of the groove 39a. Hole 37
It is attached by inserting it through holes a and 39c and screwing it into the main body part 30. At this time, as shown in FIG. 5, the tips of the alignment pipes 38 come to face the grooves 34a of the alignment rollers 34.

A shutter 41 is housed in the groove 39a of the lower shutter plate 39 and is movably attached between the upper shutter plate 37 and the lower plate 39. The shutter has a hole 41a and a hole 41b for inserting the tip component C.
A stopper pin 42 fixed to the main body portion 30 is inserted into the hole 41a of the shutter 41 through the hole 37b of the shutter upper plate 37 to limit the range of movement of the shutter 41.

Reference numeral 43 denotes a spring fixed to the shutter upper plate 37 with screws 44, and the spring is inserted into the groove 3 of the lower shutter plate 39.
9a, the shutter 41 is always pressed in one direction so that a part of the shutter 41 protrudes from the groove 39a, and the shutter drive member 19 can come into contact with the shutter 41.

In order to attach the hopper 1 constructed in this way to the hopper stand 2, as shown in FIG. By this, the main body 30, shutter upper and lower plates 3
Since 7 and 39 are made of metal, they are heavy and can be mounted in a stable state.
9b and the chip component insertion hole 2b of the hopper stand 2 are in a matched state.

For example, when it becomes necessary to change the chip parts to parts with the same shape but different constants and to remove the hopper 1 from the hopper stand 2, simply lift the hopper 1 and replace it with a hopper containing another chip part. Just connect it to the hopper stand 2.

Next, to explain the operation of Hopper 1, first,
A large number of chip parts C are stored in the hollow part formed by the outer cylinder part 31 and the funnel part 30a, and the alignment roller 34 is rotated in the direction of arrow Y (counterclockwise) in FIG. The alignment roller 34 is rotated by the drive roller 13.
When it rotates, the chip part C is scraped upward by the friction member 34b provided on the alignment roller 34,
At the same time, while preventing the chip parts C from being concentrated at the tip of the alignment pipe 38, the chip parts C fit into the groove 34a of the alignment roller 34 and become aligned, and the chip parts C in this aligned state are sequentially , and fall into the alignment pipe 38.

FIG. 8A shows an enlarged view of the main part, and the chip component C that fell first was inserted into the chip component insertion hole 41b of the shutter 41 because the alignment pipe 38 and the chip component insertion hole 41b of the shutter 41 coincided with each other. It fits into the communication hole 41b, and one end of the chip component C comes into contact with the shutter lower plate 39, and
The chip component C that fell next overlaps the chip component C that fell first in the alignment pipe 38, and in this way, the chip component C that falls inside the alignment pipe 38 overlaps with the chip component C that fell first.
are sequentially arranged and overlapped.

Next, the shutter 41 is moved in the direction of arrow Z against the spring 43. This shutter 41 is moved by the shutter drive member 19, and then moves until one end of the hole 41a of the shutter 41 engages with the stopper pin 42, and as shown in FIG. 8B, it fits into the tip component insertion hole 41b. The loaded chip component C is carried to a position that matches the chip component insertion hole 39b of the lower shutter plate 39, and then the chip component C falls through the chip component insertion hole 39b of the lower shutter plate 39. become.

At this time, the next chip part C is in contact with the upper part of the shutter 41.

Moreover, when the shutter drive member 19 is released,
The tip component 41 is returned to the original position where the other end of the hole 41a of the shutter 41 is locked to the stopper pin 42 by the spring 43, and the tip component C is newly fitted into the tip component insertion hole 41b of the shutter 41. The state shown in FIG. 8A is reached.

By repeating such operations, the chip parts C are taken out from the hopper 1 one by one.

Further, in the hopper 1, the shutter 41 is normally pressed by the spring 43, and the chip component insertion hole 39b of the lower shutter plate 39 is closed by the shutter 41, as shown in FIG. 8A. Even if the hopper 1 is removed from the hopper stand 2, the chip parts C will not spill out.
Further, at this time, no chip parts remain in the pipe 5, and if another hopper is connected to the hopper stand 2, chip parts can be sent out again.

In addition, the length of the chip part C varies due to manufacturing errors, so in FIG. , is slightly larger than the maximum length of the chip component C, and the height t from the top surface of the shutter 41 to the top surface of the shutter lower plate 39 is equal to or slightly smaller than the minimum length of the chip component C. Furthermore, the length l ₁ of the recess 37c provided in the shutter upper surface 37 is sufficiently larger than the moving length of the shutter 41, and the length l ₂ is sufficiently larger than the maximum radius of the tip component C. It has a length.

Fig. 8 shows the case of the maximum length of the chip part C, and Fig. ₉ shows the case of _the minimum length of the chip part C. Since it is related, even if you move shutter 41 now,
The chip component C located in the chip component insertion hole 41b of the shutter 41 does not get caught on the alignment pipe 38, which is the chip component insertion hole of the shutter upper plate 37.
Chip parts C located in the alignment pipe 38 of No. 7
is the chip component insertion hole 41b of the shutter 41.
Also, the shutter 41 can be moved smoothly without getting caught on both edges of the recess 37c of the shutter upper plate 37, and without chipping or cracking the chip component C.

Further, FIGS. 10 to 13 show embodiments of the alignment roller 34, and FIG. 10 shows an example in which a convex portion integral with the alignment roller 34 is provided in the groove 34a to form a friction member 34b. FIG. 11 shows a configuration in which a convex portion integral with the alignment roller 34 is provided on the outer peripheral portion and the concave groove 34a to form a friction member 34b.
Fig. 2 shows a friction member 34b in which a thin plate of rubber or metal is provided in the groove of the alignment roller 34, and Fig. 13 shows a friction member 34b formed by providing a thin plate of rubber or metal in the groove of the alignment roller 34. is provided to form a friction member 34b, and when the alignment roller 34 is rotated by this friction member 34b, the chip parts C can be scraped upward.

It goes without saying that this friction member 34b may have various configurations and shapes other than those described above.

That is, according to the present invention, the hopper, which combines the chip parts storage section, the aligning means, and the shutter, can be replaced with respect to the guide pipe, so that even when changing to another part, the hopper that needs to be changed can be replaced. When changing the production mechanism, the work for the change can be easily carried out. Further, since the alignment means of the present invention has a friction member protruding from the outer periphery of the alignment roller, it is possible to eliminate the concentration of chip parts on the alignment pipe and improve the alignment effect.

The alignment roller has a groove on its outer periphery, and this groove faces the tip of the alignment pipe, which has the effect of guiding the chip parts so that they fall easily into the alignment pipe, further increasing the alignment effect. It will be done.

[Brief explanation of the drawing]

All of them are related to the present invention; FIG. 1 is a schematic side view showing the entire chip component mounting device, FIG. 2 is a schematic top view thereof, and FIGS. 3 A and B are explanatory diagrams showing the operation of the chip component mounting device. , Fig. 4 is a perspective view of the chip parts, Fig. 5 is a sectional view of the main part of the hopper, Fig. 6 is a bottom view thereof, Fig. 7 is an exploded perspective view of the main part, and Fig. 8A and B are the main parts of the hopper. FIG. 9 is a sectional view of a main part of the hopper, and FIGS. 10 to 13 are a sectional view and a side view of a main part showing an embodiment of the alignment roller. C...Chip parts, P...Printed circuit board, S...
...Adhesive, 1...Hopper, 2...Hopper stand,
2a...Protrusion, 2b...Hole, 3...Supporting member, 4
... Alignment plate, 5 ... Pipe, 6 ... Support member, 7 ... Base stand, 8 ... Feeding belt, 9 ...
Base member, 10...lower plate, 10a...hole,
11... Upper plate, 11a... Hole, 12...
Power source, 13... Drive roller, 14... Bearing, 1
5, 16... Gear, 17... Drive source, 18... Gear, 19... Shutter drive member, 20... Cylinder, 21... Piston, 30... Main body, 3
0a...funnel part, 30b...notch part, 31...outer tube part, 32...screw, 33...lid, 34...alignment roller, 34a...concave groove, 34b...friction member,
35... Support shaft, 36... Sealing member, 37... Shutter top plate, 37a, 37b... Hole, 37c...
Recess, 38... Alignment pipe, 39... Shutter lower plate, 39a... Groove, 39b... Chip component insertion hole, 39c, 39d... Hole, 40... Screw, 41... Shutter, 41a... Hole, 41b
...Chip component insertion hole, 42...stopper pin, 43...spring, 44...screw.

Claims (1)

[Claims] 1. A hopper comprising a storage container for chip parts, means for arranging the chip parts, and a shutter for feeding out the chip parts arranged by the arranging means one by one;
In the chip component mounting device comprising a guide pipe for transporting the sent-out chip components to a position corresponding to a position on the printed circuit board where they are to be mounted, the aligning means includes an aligning roller and an aligning pipe, and the aligning means includes an aligning roller and an aligning pipe, A groove with a friction member protruding therein is formed along the outer periphery of the roller, and the groove is opposed to the tip of the alignment pipe, and the roller is rotated to remove the pipe. A device for mounting a chip part, characterized in that the hopper is adapted to scrape up chip parts around the tip, and the hopper is movable toward and away from the shutter and the guide pipe, and is replaceable.