JPH028897Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a device that determines the presence or absence of a measured weight of an article to be measured (hereinafter referred to as an article), and classifies the article into a predetermined course based on the judgment instruction. The present invention relates to an article classification device that increases the number of classification courses.

Generally, in order to sort and guide articles to a predetermined course, a protruding bar is conventionally fixed to the lower part of an article conveying plate on which the articles are mounted, which are attached to parallel bars that make up an endless conveyor, and this protruding bar is used to change direction. It was engaged with a guide rail through a sorting gate and guided to a predetermined course.

An example of a conventional article sorting device will be described in detail below with reference to the drawings.

First, a general explanation will be given with reference to FIGS. 1 to 3, and then a further detailed explanation will be provided.

Endless chains 20a and 20b are driven by a motor placed on the base 10, and a slidable article conveying plate 21 is mounted between the chains 20a and 20b and is held between parallel bars 23. When the articles conveyed to this article sorting device by the front belt 33 are classified by weight, for example, they are classified into normal, light, and heavy articles, and the classified articles are transferred to the rear belts 34 to 36 as shown in FIG. transported. Furthermore, to explain the structure in detail again with reference to FIGS. 4 and 5, numeral 10 is a base, and there are side plates 11a and 11b facing each other on the upper surface. Shafts 12 and 13 are inserted. A motor 14 is attached to the base 10, and a belt 17 is stretched between a pulley 15 of the motor 14 and a pulley 16 attached to the rotating shaft 12, and the rotating shaft 12 is driven by the motor 14. The rotating shafts 12, 13 have sprockets 18a, 18b and 19a, 19b on both sides, respectively.
is attached to it, and chains 20a, 20b are attached to it.
is engaged. As shown in FIGS. 5a and 5b, the article conveyance plate 21 is formed with semicircular long grooves 21a and 21b, and parallel bars 23 are engaged with the long grooves 21a and 21b, respectively, so that they can slide. 20a, 2
It is installed between 0b. Further, protruding rods 22a and 22b are embedded in the article conveying plate 21 as shown in the figure.

24a and 24b are sorting gates, and connecting shaft 25
a, 25b, one end of the connecting shafts 25a, 25b is connected to a bearing 26c, and the other end is connected to a bearing 26a, 25b, respectively.
It is connected to drive devices 27a and 27b via 6b. 28 is a seesaw which will be described later. 29a, 29
b and 30a, 30b are upper and lower guide rails.
0a and 30b are for moving the article conveying plate 21 whose direction has been changed to the center for reuse. 31,
32 is a support stand that supports each of the guide rails 29a, 29b and 30a, 30b;
also supports bearing 26c.

Next, the operation will be explained with reference to FIGS. 6 to 10.

First, as shown in FIG. 2, if the articles coming from the front stage belt 33 are normal (this will be explained using the weight classification of articles as an example as described above) and there is an external command to go straight, for example, the sorting gate 24a ,24b
7, as shown by the solid line in FIG.
travels straight (in the A direction) without being engaged with the upper guide rails 29a, 29b. In addition, in the case of an external command of light (direction B), the sorting gate 24
Only a changes from the solid line state in FIG. 7 to the dotted line state, the sorting gate 24a and the protruding rod 22a engage, and the article conveying plate 21 is changed to the B direction as shown in FIG. 9. The sorting gate 24a is fixed to a connecting shaft 25a supported by bearings 26a and 26c, as shown in FIG. As the shaft 25a rotates, the sorting gate 24a changes from a solid line to a dotted line. Then, while the protruding rods 22a of the article conveyance plate 21 are moving in a straight line at regular intervals, the sorting gate 24a cuts in, so that the article conveyance plate 21 is changed in the B direction. Then, the article conveying plate 21 whose direction has been changed
is centered by the lower guide rail 30a.

Next, in the case of an external command indicating that the product is heavy (direction C), the sorting gate 24b fixed to the connecting shaft 25b supported by bearings 26b and 26c is operated by the drive device 27b in the same way as in the direction B. The protruding rod 22b of the conveying plate 21 and the sorting gate 24b engage with each other, and the direction is changed to the C direction as shown in FIG. Then, the direction of the article conveying plate 2 is changed.
1 is brought to the center by the lower guide rail 30b as in the B direction.

The case where articles are classified into three courses has been described above, but in order to increase the number of classification courses to five, as shown in FIG.
7b, connection shafts 38a, 38b, bearings 39a, 39
b (center bearing etc. are omitted) drive shafts 40a, 40
b. Upper guide rails 41a and 41b may be added. Note that 42 is a support member, and 43 is a seesaw.

By the way, when the widths of the article conveying plate 21 and the article sorting device are set to specified dimensions, it is difficult to increase the number of sorting courses even if new sorting gate parts, guide rail parts, etc. are added as described above. become. In other words, if the classification course is expanded by expanding the guide rails into a fan shape, the article conveyance plate 2
The first protruding rods 22a and 22b collide with the guide rail, and their progress is blocked.

This idea was made in view of the actual situation, and by devising the shape of the guide rail, it was possible to add more classification courses.

An embodiment of the article classification device of this invention will be described below with reference to FIG. 12.

This figure schematically shows the dimensional relationship between the guide rails and the article conveyance plate 21. 1A and 1B are the outermost guide rails, 2A and 2B are the middle guide rails, and 3A and 3B are the innermost guide rails. Rail, 4A, 4B, 5A, 5B, 6 drawn with thick lines
A and 6B are the guide rails 1A and 1, respectively.
B, 2A, 2B, 3A, and 3B sorting gates are shown.

The operation of this device having the above-mentioned structure is as explained in detail so far.
When any one of A, 5B, 6A, and 6B operates, the two protruding rods 22a of the article conveying plate 21,
22b is the guide rail 1A, 1
The user is guided along one of B, 2A, 2B, 3A, and 3B, and progresses through seven classification courses.

In this case, the innermost guide rail 3 of this invention
The lengths of A and 3B are the outermost guide rails 1A,
It is set to be shorter than the length of 1B.

Therefore, as shown in the figure, when the article conveying plate 21 guided by the outermost guide rail 1B reaches the Q line, the inner protruding rod 22b
Since the article transport plate 21 is no longer restrained by the innermost guide rail 3B, the article conveyance plate 21 can be guided to a predetermined sorting position along the outermost guide rail 1B.

That is, since the classification course of the outermost guide rail 1B can be further expanded outward, the number of classification courses that can be set can be increased.

Therefore, the innermost guide rails 3A, 3B
The shortening rate of the protruding rods 22a, 2 of the article conveying plate 21 is
It is set by the pitch P between 2b, and this pitch P
If is large, the reduction rate may be small. but,
When the pitch P becomes larger, the sorting gates 4A, 4
This is not preferable because the intervals between B, 5A, 5B, 6A, and 6B become wider.

Also, the more classification courses there are, the wider the outermost guide rails 1A and 1B become.
The shortening rate will increase.

In Fig. 12, the lengths of the intermediate guide rails 2A and 2B are also shortened, but if the distance between the fan-shaped guide rails 1B, 2B, 1A, and 2A is smaller than the pitch P, the lengths will be shortened. Needless to say, there is no need for this. However, even in this case, it is better to perform appropriate shortening in order to make the widthwise deviation of the classification course as uniform as possible.

Although seven classifications have been described above, it is also possible to further increase the number of classification courses by shortening the innermost guide rails 3A, 3B.

As described above, in the article sorting device of this invention, the distance between the end of the inner guide rail and the end of the endless conveyor is greater than the distance between the end of the adjacent outer guide rail and the end of the endless conveyor. In other words, the inner guide rail is shorter than the outer guide rail, and the widthwise distance L between the innermost and outermost guide rails on the same side is set to two protrusions. Predetermined interval P between bars
Even if the outermost guide rail is widened and the number of classification courses is further increased, the two protruding rods will not come into contact with the guide rail at the same time and cause damage. This method has the practical effect of increasing the number of classifications compared to the conventional method.

[Brief explanation of the drawing]

Figures 1 to 10 show each part of the article sorting device. Figure 1 is a perspective view, Figure 2 is a plan view, and Figure 3 is a perspective view.
The figure is a plan view with the side plates removed, Figure 4 is a plan view with the article conveyance plate and parallel bars removed, Figures 5 a and b are perspective views and cross-sectional views of the article conveyance plate, and Figure 6 is an enlarged view of the gate part. 7 is a YY sectional view of FIG. 6, FIGS. 8 to 10 are explanatory diagrams of the flow of the article conveying plate, FIG. FIG. 12 shows an embodiment of this invention, and is a schematic diagram showing the dimensional relationship between the guide rail and the article conveyance plate. In the figure, 1A and 1B are the outermost guide rails, 3
A, 3B are the innermost guide rails, 4A, 4B,
5A, 5B, 6A, 6B are sorting gates, 20a,
20b is a chain, 21 is an article conveying plate, 22a,
22b indicates a protruding bar, and 23 indicates a parallel bar.

Claims (1)

[Scope of utility model registration request] an endless conveyor, a plurality of article conveyance plates each slidably arranged in the width direction of the endless conveyor, and two article conveyance plates protruding from the back surface of the article conveyance plates at a predetermined interval P in the width direction. a protruding rod; a selection device for sliding the article conveying plate by a predetermined position in the width direction by selectively engaging one of the protrusion rods; In an article sorting device equipped with a plurality of fan-shaped guide rails that guide the article conveyance plate that has been slid to a desired sorting position, the plurality of guide rails on the same side are arranged on the innermost guide. The distance L in the width direction between the terminal end of the rail and the outermost guide rail is smaller than the predetermined interval P between the two protruding bars, and the terminal end of the inner guide rail and the endless An article sorting device characterized in that the article sorting device is arranged such that the distance between the end of the conveyor and the end of the endless conveyor is greater than the distance between the end of an adjacent outer guide rail and the end of the endless conveyor.