JPS6233845B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a potato seeding machine or a stationary potato seed cutting device.

Regarding this kind of thing that is conventionally provided,
Seeds are fed one by one to the sorting frame of a rotating belt or rotating tray, and although there are some systems that automate seed feeding to some extent, they require a lot of manual labor and are uncertain, so it is difficult to improve seed feeding efficiency. has reached its limit.

In addition, an article feeding device that rotates only the screw conveyor and the guide roller outward, such as the article feeding device shown in JP-A No. 53-38679, can be applied to conveyed articles having a substantially constant shape, but If objects to be transported that are not uniform in shape and have large differences in size are supplied, small objects may fall between the screw conveyor and the guide roller, or large objects may fall from the guide roller to the object to be transferred. or

The present invention is an attempt to fully solve this problem, and the potato seeds are transferred by being placed between a screw conveyor and a guide roller arranged side by side, and the screw conveyor and the guide roller are rotated in opposite directions and outwardly rotated. The screw conveyor and the guide roller are mounted parallel to each other in almost the same horizontal plane, and a guide plate is provided diagonally between them, with the upper end of the guide plate being near the upper edge of the guide roller and the lower end of the screw If the conveyor is placed near the lower edge of the conveyor, it will be very easy to separate the seeds into individual seeds, transfer large and small potato seeds stably, and prevent excess seeds from falling off the guide rollers. This discovery led to the present invention.

In other words, if the number of potato seeds supplied from the supply gutter is greater than the number transferred by the screw conveyor, the excess seeds will ride on top of the seeds being transferred by the spiral string of the screw conveyor, and the seeds will be transferred normally. However, according to the method of the present invention, since the oversupplied seeds are configured to fall from the upper edge of the guide roller, the oversupplied seeds can quickly fall and be transferred. The normal seeds to be harvested are stuck in the approximately triangular groove formed by the fixed oblique guide plate and the screw conveyor, and are pushed by the spiral string of the screw conveyor and transferred while rolling. There is nothing that can be done to prevent the normal transfer of seeds.

Hereinafter, the present invention will be described in detail with reference to the drawings.
A screw conveyor 3 and a reversing roller 5 are arranged, and the screw conveyor 3 and the guide roller 2 are mounted parallel to each other in almost the same plane, and a guide plate 6 is installed diagonally between them, so that the upper end of the guide plate 6 is It is near the upper edge of the guide roller 2, and the lower end is the screw conveyor 3.
Configure it so that it is near the lower edge of. Reversing roller 5
is mounted above and parallel to the screw conveyor 3. Seed P at the top of the starting end of screw conveyor 3
A supply gutter 1 is provided to continuously supply a substantially constant amount of seeds P. A seed cutting device consisting of a holding roller 10 consisting of a pair of elastic rollers and a cutting blade 11 consisting of a fixed blade body is provided between the machine frames 8 and 9 below the terminal end of the screw conveyor 3, and the seed cutting device is installed below the cutting blade 11 to cut the seeds. A pair of transfer conveyors 12 corresponding to both sides of the blade 11 are arranged in a ``V'' shape. The spiral string body 4 is wound around the surface of the screw conveyor 3, and its pitch is slightly longer than the maximum length of a potato seed, which is 70 to 120 mm, and the thickness is preferably about 15 to 25 mm. Further, if the spiral string body 4 is a double spiral like a double thread screw, two seeds P will be transferred when the screw conveyor 3 rotates once. Sprockets 14 and 15 are fitted on the shaft ends of the screw conveyor 3 that protrude from the machine frame 7, and a sprocket 16 is fitted on the shaft end of the guide roller 2, which are connected and driven by a roller chain via a floating sprocket 17. The direction of rotation should be reversed and externally rotated. Furthermore, a sprocket 13 is fitted to the shaft end of the reversing roller 5, and is connected and driven by a sprocket 14 of the screw conveyor 3 by a roller chain so that the reversing roller 5 rotates in the same direction. A falling gutter 18 is provided outside the guide roller 2 from the middle part to the end part of the screw conveyor 3, and serves as a falling part for excess seeds P'.

Next, to explain the operation of the present invention, the seeds P supplied to the supply gutter 1 at approximately constant intervals are separated by one seed in the gap divided by the cylindrical wall of the screw conveyor 3, the spiral string 4, and the guide plate 6. The seeds P correspond to each other and easily turn into individual seeds P, which are rolled and transferred while being pushed up by the spiral string 4. At this time, supply gutter 1
The supply amount of seeds P is more than screw conveyor 3.
If the transfer amount is less than the transfer amount, voids will be created and plants will be missing in the case of a seeding machine, but in the case of a seed cutting device or the like, there will be no problem except that the efficiency will be reduced. In the case of a potato seeding machine, the occurrence of the above-mentioned missing plants is undesirable as it leads to a decrease in yield, so the amount of seeds P supplied from the supply gutter 1 must be slightly larger than the amount transferred by the screw conveyor 3. Since there is no corresponding gap for the excess seeds P' supplied onto the screw conveyor 3 in this way, they are transported riding on the spiral string 4 and the seeds P that are normally transported. Excess seeds P' must be promptly removed because they may sometimes prevent seeds P from being transferred normally. Therefore, in the present invention, the guide roller 2 is made to protrude from the upper end of the guide plate 6 and is configured to rotate outwardly in the opposite direction to the rotation direction of the screw conveyor 3.
When P' comes into contact with the guide roller 2, it is pulled down from the top of the screw conveyor 3 and falls onto the drop gutter 18, and the transfer of the seeds P, which are normally being transferred, cannot be prevented. The seeds P transferred on the diagonally installed guide plate 6 move while rolling, but depending on the size of the seeds P, the large seeds P contact near the upper end of the guide plate 6, and the small seeds P contact the guide plate 6. Since the seeds P contact near the lower end, regardless of their size, the seeds P are pressed against the screw conveyor 3 by their own weight and smoothly rolled and transferred by the spiral string 4.

In the present invention, as described above, the screw conveyor 3 and the guide roller 2 are arranged side by side and arranged so that the rotation direction is opposite and rotates outward, so that the excess seeds P' supplied in excess can be quickly removed. There is no obstruction to the normally transferred seeds P, and since a guide plate is installed obliquely between the screw conveyor and the guide roller, the normal seeds to be transferred can be transferred smoothly, resulting in potato seeds with fewer missing plants. This is a feeding device with high feeding efficiency that does not require manual labor, and has the advantage of being simple in structure and having fewer failures.

In the figure, 10A is the axis of the holding roller 10, and the transfer conveyor 12 is synchronized with each other, and the winged conveyor 1A and the flat conveyor 12B are driven to internally rotate each other. has been done. These conveyors 12A, 12B are connected to shafts 12C, 12D, 12E, 1
2F, and these shafts are connected and driven by a sprocket and a chain. Furthermore, any elastic material can be used for the holding roller 10, but it is preferable to use a rubber sponge with high hardness or natural rubber with low hardness, and providing unevenness on the surface improves the biting. preferable.

[Brief explanation of the drawing]

FIG. 1 is a plan view, FIG. 2 is an enlarged cross-sectional view taken along the line A-A, and FIG. 3 is a cross-sectional view taken along the line B-B. 1... Supply gutter, 2... Guide roller, 3... Screw conveyor, 4... Spiral cord, 5... Reversing roller, 6... Guide plate, 18... Falling gutter, P
……seed.

Claims (1)

[Claims] 1. In a potato seed supply device in which a screw conveyor and a guide roller are arranged side by side below a potato supply gutter, and the seeds are transferred between the screw conveyor and the guide roller, the rotating directions of the screw conveyor and the guide roller are opposite to each other. The screw conveyor and the guide roller are mounted parallel to each other in the same horizontal plane, and a guide plate is installed diagonally between them, so that the upper end of the guide plate is near the upper edge of the guide roller. The screw conveyor is arranged so that its lower end is near the lower edge of the screw conveyor, and is characterized by having an excess seed drop part on the guide roller side so that the excess seeds fall from the upper edge of the guide roller. Potato seed feeding device.