JPH04287603A - Apparatus for pretreating group seedling - Google Patents

Abstract

PURPOSE:To divide rootstocks without damaging growth points of group seedlings, simultaneously cut stems and roots of a different shape and treat the rootstocks into readily plantable seedlings. CONSTITUTION:An apparatus for pretreating group seedlings is provided with stem conveying belts 20 for nipping and conveying seedlings, conveying belts 10 on the plant foot side, stock loosening conveyors 12 for loosening rootstock parts, a top cutting cutter 25 located at the stem tip side from the aforementioned stem conveying belts 20 and root cutting cutters 26 for shortening the length of the roots arranged in the form of a row.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is a method for treating group seedlings with tightly entwined roots, such as adult rice seedlings or rush seedlings, to make them easier to plant before planting them in a field using a planting device. This invention relates to a seedling pretreatment device.

0002

[Prior Art] Conventionally, group seedlings with tightly entwined roots, for example,
Since the roots of rush seedlings are tightly intertwined and difficult to divide, before planting, only the root stock part is held and conveyed using a conveyor with many needle-like protrusions, and the plant part is separated at the circulating section at the end of the conveyor. The device is disclosed in Japanese Utility Model Publication No. 1-32820 and Japanese Utility Model Publication No. 2-8.
This is already known from Publication No. 1125 and the like.

0003

[Problem to be solved by the invention] Grass seedlings or rice seedlings have long plant heights and long roots, which become an obstacle when planting.
Furthermore, if only the rootstock is pinched and transported and disassembled as in the above-mentioned known invention, the posture of the stem will be disturbed during this process, damaging the bud part, and the transportation and planting equipment after treatment will be difficult. It takes a lot of effort to load the seedlings, and there are also problems such as the leaves, stems, and roots becoming obstacles when planting with a planting device, so it is necessary to cut the seedlings with a separate seedling cutting device after loosening. there were.

0004

[Means for Solving the Problems] The present invention provides a stem-clamping conveyor belt and a plant-side conveyor belt for transporting seedlings, a plant-breaking conveyor for unraveling the root section, and a stalk-clamping conveyor belt located on the stem end side of the stem-clamping transport belt. By arranging tip cutters and root cutters that shorten the length of roots in a row, it is possible to prevent stems from being disturbed and damage to buds during the root cutting process, and also to prevent stems from being damaged during the root cutting process. The above-mentioned problem was solved by making it possible to cut the tip and root.

[0005]

[Action] Group seedlings with tightly entwined roots dug out from the nursery.
When supplied to the pre-treatment device, the stem is conveyed by the stem tip side conveyance belt, the root part is pinched and conveyed by the stem base conveyance belt, and the stem tip side is
The tip cutter cuts the roots, the root cutter cuts the roots and shortens them, and the stem cutting conveyor forcibly loosens the tightly entangled roots.

[0006]

[Embodiment] To explain an embodiment of the present invention, a pre-treatment device for rice seedlings shown in the drawings, a lower frame 1 is mounted on a machine stand with casters, and one end and the other end of the lower frame 1 are mounted on the left and right sides respectively. A pair of rotating shafts 2, 2, 3, 3 are rotatably supported by bearings and installed upright, and an upper frame 5 is supported on the upper part of these rotating shafts 2, 3 via bearings so that it can also serve as a support. , both sides of the middle parts of the upper and lower frames 1 and 5 are connected by a pair of front and rear supports 6a, respectively, and the left and right members of the upper frame 5 are connected to each other by gate-shaped frames 4, 4 which are higher than the tip cutting cutter 25, which will be described later. It is strongly constructed by connecting at multiple points, and a cover 4 is installed on the gate-shaped frames 4, 4.
Safety is ensured by attaching the pulleys 6, 6, which are attached to the lower part of the rotating shafts 2, 2 on the feed side and spaced apart so as to have a feeding gap, and the rotating shafts 2, 2
A pair of stock belts 10, 10 for pinching and conveying the straw root stock part are respectively stretched between adjacent pulleys 8, 8 which are pivotally supported at the ends of swinging arms 7, 7 extending from the Although shown as having the same diameter, by making one of the pulleys 6, 6 larger in diameter, it is possible to easily supply an irregularly shaped root section, and an arm protruding from the boss of the swinging arm 7 is provided. A strong spring 9 is stretched between the arm 7a and the lower frame 1, and the arm 7a is pulled and pressed until it comes into contact with the stopper 7b, and the tension roller 10a, which presses against the midway part of the conveyance side of the stock belt 10, is oscillated. The movable arm 10b is
It is biased to rotate by pulling an arm 10c protruding from its base with a spring 10d.

[0007] On the left and right sides of the delivery side of the stock belts 10, 10, there is an unraveling conveyance belt 12, which is constituted by a chain, in which a large number of plates having a plurality of needle-shaped protrusions 11, etc. are attached.
12, front and rear sprockets 13, 13, an intermediate sprocket 15 that protrudes from them toward the conveyance path side and is slightly deviated toward the feeding side, and an outer tension sprocket 1.
The needle-shaped protrusions 11 of the left and right unraveling conveyor belts 12, 12 sequentially protrude into the conveyance path at a gentle angle of entry on the feeding side, and the needle-like protrusions 11... of the left and right unraveling conveyor belts 12, 12 protrude sequentially at a gentle angle of entry into the conveyance path, and the portions corresponding to the intermediate sprockets 15, 15. As they engage with each other near the intermediate sprocket 15, the spacing between the needle-like protrusions 11 rapidly expands radially, and beyond this point, they gradually move outward at a gentler exit angle, and the needle-like protrusions 11... A guide rail 14 is brought into sliding contact with the back surface on the upper side in the conveyance direction, and the needle-shaped protrusion 11
... are made to forcibly pierce the strongly entangled root stump, and inside the loosening and conveying belts 12, 12, there is a tip of the needle-like projection 11 on the other side at the part where the needle-like projections 11 engage. A pair of guide plates 17, 17 are provided which are closer to the area and have slits that gradually widen on the inlet side and the outlet side than this part, and through which the needle-like protrusions 11 pass. The lower edges of the roots 17 and 17 are connected by a guide bottom plate 17a that guides the lower surface of the cut root stock.

[0008] Also, between the large diameter pulley attached to the lower part of the rotating shaft 3 on the delivery side and the small diameter pulley adjacent to the large diameter pulley that is supported on the lower side thereof, there is an exit belt that firmly holds the separated root part. 18, 18 are stretched, and on the delivery side of these exit belts 18, a pair of left and right delivery rolls 19, 19 having a number of protrusions or a number of protrusions on the outer periphery are pivotally supported. The cleaved root stump is strongly held and pulled by rotating at a higher speed than the exit belt 18, thereby stretching and enlarging the cleaved root stump in the direction between the plants.

Further, above the stock belt 10, the unraveling conveyor belt 12, and the exit belt 18, which are connected in series at the lower part, there are a pair of left and right stem end clamping belts 20, 20, an intermediate clamping belt 21, 21, and the shaft 22a on the feeding side of the upper frame 5.
The stem tip clamping belt 20,
A tip cutter 25 whose outer periphery partially crosses the clamping conveyance path is pivotally supported on one side of a portion close to the upper surface of the stock belt 20 and slightly above the terminal end of the stock belts 10, 10. A pair of left and right root cutting cutters 26, 26 are pivotally supported below and on the other side of the part close to the lower surface of the stock base belt 10, which cross the clamping conveyance path with their outer circumferential parts overlapped at the top and bottom. On the opposite side of the tip cutter 25,
A receiving rod 24 is provided so as to sandwich the outer peripheral portion thereof with a slight gap therebetween.

FIG. 3 shows a transmission system in which an output V-pulley 30 of an electric motor 28 attached to the middle part (height) of the frame is supported above it via a V-belt 31 in the front-rear direction. A sprocket 34 that transmits power to the V pulley 33 of the intermediate shaft 32 and is attached to the other end of the intermediate shaft 32;
A chain 37 is hung around the input sprocket 36 of the worm gear case 35 which reduces the speed at a ratio of approximately 40:1, and the output sprocket 38 connects the sprocket 39 of the rotating shaft 3 on the other side to which the sprocket 13 is attached to the chain attached to the tension roller 40. 41 and attached to the rotating shaft 3 drives a gear 45 attached to the opposite rotating shaft 3 via gears 43 and 44 of the same diameter arranged laterally, The sprockets 46, 46 attached to each rotating shaft 3, 3 drive the sprockets 47, 47 of the vertical shafts 39a, 39a via chains 48, 48, and the sprockets 50 attached to the shaft of one of the sprockets 13 drive the sprockets 47, 47 of the vertical shafts 39a, 39a. A chain 52 is stretched around the sprocket 51 of the rotating shaft 2 on the side of the rotary shaft 2 to drive a gear 53, and this gear 53 connects the gear 56 attached to the other rotating shaft 2 through gears 54 and 55 that mesh in series with the chain 52. As it is driven, the stem end clamping belt 20, intermediate clamping belt 21, unraveling conveyance belt 12, exit belt 18, and delivery roll 19 (via the chain 19a) rotate.

A bevel gear case 58 is connected to the feed side of the intermediate shaft 32 in the longitudinal direction via a coupling 57.
are interlocked and connected, and a chain 62 is stretched between the output sprocket 60 and the sprocket 61 of the intermediate shaft 61a,
Another sprocket 63 attached to this intermediate shaft 61a is interlocked with the sprocket 65 of the first cutter shaft 64 in the vertical direction by a chain 67 with a tension 66.
One of the root cutting cutters 26 is attached to the cutter shaft 64, and a gear 68 is attached to the lower side of the first cutter shaft 64.
is meshed with the gear 73 of the shaft 26a to which the other root cutting cutter 26 is attached via two gears 70, 71 of the same diameter, so the left and right root cutting cutters 26, 26 can cut the stem while sandwiching it. A sprocket 25a attached to the shaft of the tip cutter 25, which is driven to rotate in reverse so as to cut, is driven by a sprocket 25b on the upper part of the intermediate shaft 61a via a chain.

Next, the operation of the pre-treatment device for rush seedlings will be explained. When a group of seedlings collected from a nursery bed is placed on the supply plate 17b which is lower than the guide bottom plate 17a and fed, first the root part is separated from both the roots of the seedlings. Sandwiched between the belts 10, 10,
At this time, even if the root stock is deformed, it is smoothly pinched and conveyed while rotating slowly due to the speed difference, and then the stem is pinched between the starting ends of the stem tip clamping belt 20 and the intermediate clamping belt 21, and is held almost vertically. The stem tip is cut into a length of about 250 mm above the rhizome by the cutting cutter 25 at the upper part near where it is pinched, and the root part is pinched and conveyed by the stem belts 10, 10. The rhizome is cut to a length of about 20 mm downward from the rhizome by the right and left root cutting cutters 26, 26, and then released from the terminal end of the stock base belt 10 toward the starting end of the unraveling conveyor belt 12, 12. continues to be conveyed while being held in two places, upper and lower, by the stem end holding belts 20, 20 and the intermediate holding belts 21, 21, and the needle-like protrusions 11 of the loosening conveyance belts 12, 12 are directed toward the holding conveyance path. The needle-shaped protrusions 11 and 11 advance through the slits of the guide plate 17 while moving diagonally, and pierce deeply into the roots one after another.
- rapidly rotates to stretch out the strongly entangled roots and separate the stumps, and after passing this, they retreat one by one and guide plates 17,
Exit through the slit 17 and exit belt 1 immediately after that.
8, 18 and transported while being tightly held,
At about the same time, the stem part becomes released, and the sent-out root stock part is sandwiched between delivery rolls 19, 19 and pulled out at a higher speed than the conveyance speed, so that the seedling becomes a thin film-like strip-like seedling with wide spacing between plants.

In the above-mentioned embodiment, the rotary shafts 2, 3, vertical shafts 39a, 39a, etc. are moved in the vertical direction so that the root cutting, stem tip cutting, unraveling, etc. are performed while the seedlings are transported in a substantially vertical position. However, if the axes are tilted outward at an appropriate angle, for example 45 degrees, and the seedlings are transported in an oblique position when viewed from the transport direction, an inclined receiving plate may be provided in the feeding section. If the stem is received and the root end is received by the inlet guide plate 17b, the feeding position and posture can be specified by simply throwing in the seedling, making the feeding work easier. The tips of the stems will not fall outside the conveyance path and will not cause transmission or processing problems.

[0014]

[Effects of the Invention] As described above, the present invention provides a stem-clamping conveyor belt and a plant-side conveyor belt for transporting seedlings, a plant-breaking conveyor for unraveling the root part, and a stalk-clamping conveyor belt located on the stem end side of the stem-clamping conveyor belt. A tip cutter and a root cutter that shortens the length of the roots.
Because they are arranged in rows, the strongly entwined roots can be separated into needle-like protrusions 11 and 11.
・When unraveling, the stems are conveyed while being held by the conveyor belt, so their posture is not disturbed, which prevents damage to the new shoots at the base, and
The stems and roots of seedlings can be cut during the transportation process for root division, significantly improving work efficiency, and the lengths of stems and roots are well aligned, making it easier to plant with a planting device. And it can be put into a state where it can be carried out accurately.

[Brief explanation of the drawing]

FIG. 1 is a side view of a strawberry seedling pretreatment device.

FIG. 2 is a plan view of the same as above.

FIG. 3 is a plan view of the transmission device.

FIG. 4 is a transmission system diagram.

FIG. 5 is a side view of an example in which the pulley 8 and the pulley 6 have the same diameter.

FIG. 6 is a plan view of the lower path of the device.

FIG. 7 is a sectional view of the unraveling device.

FIG. 8 is a plan view of the upper path of the device.

[Explanation of symbols]

1 Lower frame 2 Rotation axis 3 Rotation axis 6 Pulley 10 shares yuan belt 11 Acicular process 12 Unraveling conveyor belt 14 Guide rail 17 Guide plate 18 Exit belt 19 Delivery roll 20 Stem tip clamping belt 21 Intermediate clamping belt 25 Tip cutter 26 Root cutter

Claims (1)

[Claims] 1. A stem-clamping conveyor belt and a plant-side conveyor belt for transporting seedlings, a plant-stripping transport belt 12 for loosening the root part, and an end-cutting cutter 25 located on the stem end side of the stem-clamping transport belt. A pretreatment device for group seedlings, characterized in that root cutters 26 for shortening the length of roots are arranged in a row.