JPH08214623A - Seedling feeder for transplanter - Google Patents

Abstract

PURPOSE: To provide a seedling grader without disturbing the posture of a seedling row in a seedling feeder for feeding the seedlings to a planter of a transplanter using the seedlings, having a definite shape with soil and separated into individual seedlings. CONSTITUTION: This seedling feeder is obtained by installing a leaf part supporting belt 41 mutually parallel to a paper cylinder part supporting belt 31, increasing the width of a receiving end and a delivering end of the paper cylinder part supporting belt 31 so as to stably support the central part of the paper cylinder part 93 of each seedling 91, pushing down both sides in the travel central part of the paper cylinder part supporting belt 31 with a guide unit 32, narrowing the width of the travel central part, supporting only a part of the lower side of the paper cylinder part 93, using the space between the central part of the paper cylinder part supporting belt 31 and the leaf part supporting bent 41 as a grading space S and oppositely installing a leaf part nipping belt 42 on the upper side of the leaf part supporting belt 41.

Description

Detailed Description of the Invention

[0001]

The present invention relates to transplant cultivation of agricultural products,
In a transplanter that uses a seedling with a soil-shaped portion such as a paper tube part of a paper tube seedling container, defective seedlings with missing leaves of the seedling were removed, and the intervals were uneven. The present invention relates to a seedling feeding device for a transplanting machine in which the soil-fixed shaped parts of the seedling row are aligned and supplied to the planting device at predetermined intervals to be planted in the main field.

[0002]

2. Description of the Related Art A seedling selection device for removing defective seedlings having a fixed portion such as a paper tube seedling has been proposed as Japanese Utility Model Publication No. 3-40090.

This seedling sorting apparatus for removing defective seedlings, for a good seedling having a normal leaf portion, the leaf portion is pinched by a leaf portion support belt and a leaf portion holding belt to form a root portion as a soil-fixed shaped portion. Place it on the root support belt and transfer it to the next stage. However, with respect to defective seedlings having no leaves, the roots are supported only by the root support belt so that the balance is lost and the seedlings are not discharged to the outside of the system and transferred to the next stage.

In this seedling selection device for removing defective seedlings, a leaf support belt for supporting the leaf portion and a root support belt for supporting the lower side of the paper tube portion are provided, and the leaf support belt and the root support belt are provided. The space between them is a sorting space that does not support the upper part of the paper cylinder, and a sorting seedling transport belt is provided in the front of the sorting belt in the running direction, and a separated seedling receiving belt is provided in the back in the running direction of the sorting space. It is a pair of sandwiching belts. This is the first conventional technique.

Also, a seedling aligning device using a switch for detecting the presence or absence of a soil-fixed shaped portion such as a paper tube seedling is disclosed in JP-A-54-13.
Proposed as issue 0320.

In the seedling aligning device using this switch, a delivery plate is provided between the belt of the defective seedling removing device and the belt of the seedling aligning part, and is provided in the vicinity of the delivery plate. Then, the seedlings are conveyed from the belt of the defective seedling removing device to the delivery plate and then to the belt of the seedling aligning part, and the belt of the defective seedling removing device is detected by the switch by detecting the presence or absence of the soil-shaped part on the delivery plate. The purpose is to accelerate and decelerate and hold the seedlings on the belt of the seedling alignment section as necessary and sufficient. This will be referred to as a second conventional technique.

Further, a seedling aligning device using a switch for detecting the presence or absence of a fixed soiled portion such as a paper tube seedling in a non-contact manner is not actually available.
Proposed as 4-45917.

The seedling aligning device using this non-contact switch is
This photoelectric switch is provided above the delivery part of the belt of the defective seedling removing device and the belt of the seedling alignment part, and projects the light onto the earthed fixed part of the delivery part to detect the presence or absence of the reflected light. This photoelectric switch uses light to detect the presence / absence of the fixed part with earth, and does not contact the fixed part with earth. This will be referred to as a third conventional technique.

Further, a posture control device for correcting the disturbance of the posture of a seedling having an earth-shaped fixed portion such as a paper tube seedling is disclosed in the above-mentioned Japanese Utility Model Publication No.
Proposed as 4-45917.

The posture control device for correcting the disturbance of the posture of the seedlings is intended to correct the disturbance of the posture of the seedling row caused by the provision of the defective seedling removing device. That is, by using a plurality of belts as a defective seedling removing device, by different seedling transport speed of those belts, or by affecting the good seedlings that fall defective seedlings should be normally transported, The seedlings should be lined up in a direction orthogonal to the transport direction, but the leaf side precedes or the root side precedes.

In this posture control device for correcting the disturbance of the posture of the seedlings, a drop is provided between the seedling conveying belt and a guide belt provided downstream of the seedling conveying belt so that the rotation speed of the seedling conveying belt is faster than that of the guide belt. This is to try to catch up with the delayed side. This will be referred to as a fourth conventional technique.

Further, it is known that an alarm detector for detecting the presence / absence of the lower side of the paper tube portion is provided in the seedling transfer path of the vertical transfer belt for seedlings with a fixed portion such as a paper tube seedling. There is.

This vertical conveyor belt alarm detector is provided on a pair of vertical conveyor belts that sandwich the paper tube of the seedling and convey it to the lower part of the vertical direction and deliver it to the planting device. Is to provide an alarm when is not supplied.

In this vertical conveyor belt alarm detector, the seedling aligning section for closely aligning and transporting the paper tube portions of the seedlings and the seedling receiving section for receiving the seedlings from the seedling aligning section have a faster seedling transporting speed and a spacing between the seedlings. A seedling separating section is provided for transporting the seedlings. In the seedling separating section, the pair of vertical conveyor belts sandwiches the paper tube portion of the seedlings and conveys it almost vertically downward, and traverses the seedling conveying path below the paper tube portion of the vertical conveyor belt. The presence or absence of the paper tube portion is detected by the detection needle that comes into contact with the paper tube portion. This will be referred to as a fifth conventional technique.

A device for removing defective seedlings having a soil-shaped portion such as a paper tube seedling, and a seedling-selecting device provided with a non-transported region of the soil-shaped portion is described in Japanese Utility Model Publication No. 2-36328. Proposed.

This seedling sorting device provided with a non-transportation area of the soil-fixed shaped portion is intended to more reliably remove defective seedlings by placing the root pot portion as the soil-shaped fixed portion on the inheriting rod which is not transported. Is.

In the seedling selection device provided with the non-conveyance area of the root pot portion as the soil-fixed shaped portion, the leaf stem portion conveyor belt for supporting the leaf stem portion and the inheritance rod for supporting the lower side of the root pot portion are provided. There is a sorting space that does not support the upper side of the root pot portion between the leaf stem transport belt and the successor rod and is a non-transport area. The root space transport belt B is a sorting space in front of the traveling direction of the non-transport area. The root-conveying belt A is provided at the rear of the traveling direction, and the sandwiching conveying belt is provided above the leaf stem conveying belt. This is the sixth prior art.

[0018]

In the seedling sorting device of the first prior art, a large number of belts are required to construct the device, and the traveling speed is increased when soil adheres to the pulleys that rotate these belts. The transport speed of seedlings changed, and the posture of the seedlings was sometimes disturbed. In other words, on the leaf side, the leaf support belt and the leaf holding belt, on the root side, the root support belt, the sorted seedling conveying belt, and the separated seedling receiving belt,
A total of 5 belts is the minimum required. The soil-fixed shaped part of the seedling occupies most of its weight, and the belt on the root side is important for maintaining posture.

Further, the leaf portion of a good seedling having a normal leaf portion in the selection space may have its holding position changed by the leaf support belt and the leaf holding belt, or the leaf portion may fall out when it is severe. There is. In other words, the fixed part with earth in the paper tube seedling had a considerable weight, and the fixed part with earth was supported by the separated seedling receiving belt, but when it reached the sorting space, it lost its support for a period and fell down. If the gripping force of the leaf portion by the leaf portion supporting belt and the leaf portion holding belt is weak, the leaf portion overcomes it and the leaf portion comes out. Then, if the leaf part comes off and the holding position changes, the seedling will be in a state of protruding from the seedling row to the leaf portion side when transferred to the sorted seedling conveying belt, and the posture of the seedling row will be disturbed.

Further, when the seedlings are transferred to the sorted seedling conveying belt, the upper part of the soil-fixed shaped portion may be delayed and the posture of the seedling row may be disturbed. In other words, since the upper part of the soil-fixed shaped part was not supported in the selection space, it hung down, and there may be some time delay before it reaches the start end of the sorted seedling conveyor belt, during which time Since the lower side of the part is carried on the root support belt and conveyed, the root side precedes and the posture of the seedling row is disturbed.

In the second prior art seedling aligning device, the earthed fixed part is placed on the delivery plate which does not convey the seedlings once. It is not always lost, and even if a switch is provided on the delivery plate, the necessary detection cannot be performed, and it is uncertain to hold the seedlings on the belt of the seedling arranging section in a necessary and sufficient manner.

In the third prior art seedling aligning device, the presence or absence of the reflected light from the soil-fixed shaped portion is detected by the photoelectric switch, so that strong sunlight in a transplanter used outdoors may be lost. If it hits the fixed part, it cannot be detected because the sunlight projected by the photoelectric switch cannot be distinguished from the sunlight. Therefore, in order to use the photoelectric switch in the transplanter, it is necessary to prevent sunlight from hitting the soil-fixed shaped portion at the detection position, but as described above, the seedling row reaching here may be disturbed. , Workers need to be able to easily observe the seedlings. Therefore, it is impossible to completely cover the plant with sunlight, and the control of the seedling alignment device by the detection of the photoelectric switch is also uncertain.

In the fourth prior art attitude control device,
It is important to make the rotation speed of the seedling conveyance belt faster than the guide belt, and it is necessary for the delayed side to catch up with the drop while the leading side is waiting with the slow guide belt. If the guide belt and the seedling conveying belt have the same rotational speed, the leading side will proceed as it is and the delayed side will not catch up, and therefore the posture disorder cannot be corrected.

In the fifth prior art alarm detector,
The pair of vertical conveyor belts transfers the seedlings to the pair of elastically planted disks of the planting device, and the elastically planted disks sandwich the upper part of the paper cylinder to plant the seedlings. The vertical conveyor belt must project the upper part of the paper tube portion by that amount. Further, the pair of vertical conveyor belts conveys the seedlings while sandwiching the paper tube portion, and if the width thereof is narrow, the seedlings cannot be stably conveyed, and thus the wider width is preferable. Therefore, the lower side of the paper tube cannot be sufficiently projected from the vertical conveyor belt, but the amount of protrusion from the lower side is reduced due to the disturbance of the seedling rows transferred to the vertical conveyor belt. Since the detection needle that traverses the seedling transportation route in (1) does not come into contact with the paper tube part, an unnecessary alarm was sometimes issued.

In the sixth prior art seedling selecting device, the belt is composed of four belts, which is one less than that in the first prior art, and the posture of the seedling row is disturbed due to the adhesion of earth and sand to the pulley. It is advantageous to them. However, in order to support the lower part of the root pot with the inheritance rod of the no-conveyance area and to convey the no-conveyance area only by holding the stem of the leaf stem with the conveyor belt of the stem and the conveyor belt of the sandwich, The foliage should be fairly stiff and tough relative to the weight of the part. If the leaf stem is weak or the weight of the root pot is large, the root pot on the inherited rod will not move and the leaf stem will be bent even if the leaf stem conveyor belt and the sandwiching conveyor belt try to convey it. The pots fall from the inheritance rod, and the good seedlings having the leaves to be normally transported are not normally delivered to the next stage.

According to the present invention, in a seedling feeding device for feeding seedlings separated into individual seedlings to a planting device, a seedling sorting device that does not disturb the posture of the seedling row and reliably detect the soiled fixed part of the seedlings. A warning detector that can reliably detect the soiled fixed part by a seedling alignment device that can detect needles, by a posture control device that corrects the posture disorder without requiring a speed difference, and even if the posture of the seedling row is disturbed. It is also an object of the present invention to provide a high-performance and high-efficiency transplanter by using a seedling selection device that normally delivers even a seedling with a weak leaf portion and a large weight of the soil-shaped portion to the next stage.

[0027]

A seedling feeding device 20 of a transplanting machine according to the invention of claim 1 is a device for feeding seedlings 91 separated into individual seedlings 91 to a planting device 80, wherein leaf portions parallel to each other are provided. A support belt 41 and a paper tube portion support belt 31 are provided, and the receiving end portion and the sending end portion of the paper tube portion support belt 31 are wide so as to stably support the central portion of the paper tube portion 93 of the seedling 91, and the paper Tube support belt 31
The guide body 32 pushes down both sides of the running central part of the paper tube to narrow the width so that only a part of the lower part of the paper tube part 93 is supported, and between the center part of the paper tube part support belt 31 and the leaf part support belt 41. Is a sorting space S, and a leaf holding belt 42 is provided above the leaf supporting belt 41.

The seedling supplying device 20 of the transplanter according to the invention of claim 2
In the device for supplying the seedlings 91 separated into individual seedlings 91 to the planting device 80, the seedling aligning unit for supplying the seedlings 91 to the planting device 80.
50 is provided with a detection belt 51 in parallel, the detection belt 51 is provided with a large number of rollers 52 that freely rotate in the conveying direction of the seedlings 91, and the rollers 52 themselves also rotate and carry the seedlings 91, A detector 53 for detecting the presence or absence of the paper tube portion 93 of the seedling 91 is provided between the detection belts 51 from below, and the detector 53 is provided with a detection needle 54 for contacting the paper tube portion 93 and falling to detect the presence or absence thereof. , Paper tube
When 93 is not detected, the detection needle 54 is projected from the surface of the detection belt 51, and the projection height of the detection needle 54 is adjustable.

The seedling supplying device 20 of the transplanter according to the invention of claim 3
In the device for supplying the seedlings 91 separated into individual seedlings 91 to the planting device 80, the seedling aligning unit 50 for closely aligning and transporting the paper tube portion 93 of the seedlings 91, and the seedling aligning unit 50 to the seedling 91. A seedling separating section 70 is provided which receives the seedlings and has a faster seedling conveying speed than that of the seedlings 91, and conveys the seedlings in a substantially horizontal direction in the seedling aligning section 50, and in the seedling separating section 70, the seedlings 91 are conveyed generally vertically downward, Alignment section
A detection belt 51 that conveys the paper tube portion 93 of the seedling 91 in 50 in the horizontal direction and an aligning roller 61 that raises it to a position higher than it and conveys it in a convex shape.

The seedling feeding device 20 of the transplanter according to the invention of claim 4
In the device for supplying the seedlings 91 separated into individual seedlings 91 to the planting device 80, the seedling aligning unit 50 for closely aligning and transporting the paper tube portion 93 of the seedlings 91, and the seedling aligning unit 50 to the seedling 91. A seedling separating section 70 that receives the seedlings and has a higher seedling conveying speed and conveys the seedlings 91 at intervals is provided. In the seedling separating section 70, a pair of vertical conveying belts 71 sandwich the paper tube portion 93 of the seedlings 91 in a generally vertical downward direction. The paper tube 93 is transferred to the seedling transfer path on the leaf 92 side of the vertical transfer belt 71.
A detector 72 for detecting the presence or absence of

The seedling feeding device 20 of the transplanter according to the invention of claim 5
In the device that supplies the seedlings 91 separated into individual seedlings 91 to the planting device 80, the support belt 101 that supports the upper side of the leaf portion 92 and the paper tube portion 93 and the side of the support belt 101 of the paper tube portion 93. The lower side is used as a sorting space S that does not support, and a supporting belt 101 of the sorting space S is provided with a sorting seedling conveying belt 103 in the front in the traveling direction and a separated seedling receiving belt 102 in the rear in the traveling direction.
A leaf holding belt 111 is provided on the upper side of the.

[0032]

[Operation] In the invention of claim 1, the paper tube supporting belt 31
The receiving end and the sending end are made wide so as to stably support the central part of the paper tube part 93 of the seedling 91, and the width is narrowed by pushing down both sides of the running center part of the paper tube part support belt 31 by the guide bodies 32. Since only a part of the lower side of the paper tube portion 93 is supported, the width of the upper surface of the paper tube portion support belt 31 becomes gradually narrower from the receiving end portion to the traveling center portion, and from the traveling center portion to the delivery end portion. It gradually becomes wider. Further, only the paper tube supporting belt 31 needs to support the paper tube 93.

According to the second aspect of the invention, the detector 53 has a paper tube portion.
Provided with a detection needle 54 that contacts 93 and falls to detect the presence or absence of
When the paper tube portion 93 is not detected, the detection needle 54 is made to project from the surface of the detection belt 51, and the projection height of the detection needle 54 is adjustable, so that the projection height of the detection needle 54 should match the paper tube portion 93. It can be adjusted, and when the detection needle 54 comes into contact with the paper tube portion 93, it falls to the same height as the surface of the detection belt 51.

According to the third aspect of the present invention, the detection belt 51 horizontally conveys the conveying path of the paper tube portion 93 of the seedling 91 in the seedling arranging section 50, and the aligning roller 61 that raises it to a higher position and conveys it in a convex shape. Therefore, the paper tube portion 93 does not rise to a high position when contacting only with the aligning roller 61, and is pushed by the paper tube portion 93 on the subsequent detection belt 51 while the leading side is waiting and the convex portion of the aligning roller 61 is projected. Ascend.

In the invention of claim 4, a detector for detecting the presence or absence of the paper tube portion 93 in the seedling conveying path on the leaf portion 92 side of the vertical conveying belt 71.
Since 72 is provided, the paper tube portion 93 is sufficiently protruded to the leaf portion 92 side of the vertical conveyor belt 71, so that the detector 72 can detect the paper tube portion 93 even if the protrusion amount is slightly reduced due to the disturbance of the seedling row. Can be detected.

According to the fifth aspect of the present invention, the support belt 101 for supporting the upper side of the leaf portion 92 and the paper tube portion 93 and the side portion of the support belt 101 are attached to the paper tube portion 93.
Since the selection space S that does not support the lower side of the paper is a good seedling having a normal leaf portion 92, the support belt 101 is provided on the upper side of the paper tube portion 93.
The lower side does not come into contact with anything, so it can be transported reliably.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

As a seedling 91 having a fixed portion with soil attached to each seedling 91, a paper tube seedling 90 by a paper tube raising container is shown. This paper tube seedling raising container is made of decay-resistant paper, and is a hexagonal column-shaped paper tube whose upper and lower sides are opened when unfolded, and is orderly bonded with a water-soluble paste. Pack the soil in this paper cylinder,
Seeding each grain into individual paper cylinders, covering the soil and installing it on the nursery to raise seedlings, and after raising the seedlings for a certain period, the seedlings grow to become paper cylinder seedlings 90, and the water-soluble glue gradually dissolves due to irrigation and disappears, The paper cylinders are gradually connected to each other as the decay progresses, and at the time of transplantation, the paper cylinders 93 as soil-fixed shaped parts are properly and separably connected to each seedling 91 while maintaining an appropriate connection strength. .

However, all the seeds sown for each grain in individual paper cylinders in a paper-tube raising container are not all grown normally and can be transplanted. During the period, about 10% of the seedlings are not well-grown leaves or poor seedlings that cannot be transplanted. Therefore, the seedling supply device 20 that supplies the planting device 80 at predetermined intervals after removing the defective seedlings and aligning the good seedlings having the remaining normal leaf portions 92 is required.

Next, the paper tube seedlings 90 using this paper tube seedling raising container
The transplanting machine equipped with the seedling supplying device 20 for supplying the seedlings to the transplanting device, separating the individual seedlings 91 and supplying them to the planting device 80 will be described.

In FIG. 1, reference numeral 1 is a machine frame, and the machine frame 1 is a frame body having a substantially rectangular shape in a plan view, and is attached to a tractor (not shown) and towed. An upper frame 2 is provided above the machine frame 1, a seedling placing table 3 is provided above the upper frame 2, and a separating device 10 is provided in the upper frame 2 below the seedling placing table 3.
To provide. Grounding wheels 4 are provided on the lower left and right sides of the machine casing 1, and the grounding wheels 4 are grounded on the field E and rotate as the machine casing 1 advances to supply power to the apparatus. A seedling feeding device 20 is provided between the machine frame 1 and the upper frame 2, the seedling feeding device 20 is supported by the seedling feeding device frame 21, and a planting device 80 is provided between the seedling feeding device 20 and the field E.

The separating device 10 comprises a pair of rails on the upper frame 2.
11, a seedling supply frame 12 that reciprocates on the rail 11 in its longitudinal direction, a seedling supply belt 13 provided on the seedling supply frame 12, and a pair of separation shafts 14 protruding upward from the seedling supply device frame 21, It is composed of a pair of separation rollers 15 fitted in the upper part of a pair of separation shafts 14. The seedling supply belt 13 intermittently rotates in the direction of the separation roller 15 by one row of the aligned seedlings 90 at the reciprocating end of the seedling supply frame 12, and is inclined slightly toward the separation roller 15.
The pair of separation rollers 15 have the turning belts 16 on the surfaces facing each other.
The separating roller is rotating in the direction of
The starting end of the turning belt 16 starts between 15.

The paper tube seedlings 90 are placed on the seedling feeding belt 13 in a standing state, and are moved together by the reciprocating movement of the seedling feeding frame 12, and are brought into contact with the pair of separating rollers 15 one by one, so that the individual seedlings 91 are continuously fed. The separated seedling 91 is sandwiched between the pair of separation rollers 15 and fed out, and is delivered to the turning belt 16. When all the rows of the paper tube seedlings 90 have been separated, the seedling supply belt 13 intermittently circulates, and the separation of new seedling rows is started.

The turning belt 16 sandwiches and conveys the standing seedlings 91 fed from the separating roller 15. The seedling selecting device 30 is connected to the sending end of the seedlings 91, and the seedlings 91 are laid sideways to the seedling selecting device 30. Convert and hand over.

A seedling selection device 30 as a seedling supply device 20 is provided in the horizontal direction from below the conveyance end of the turning belt 16.

The seedling sorting device 30 is provided with shafts 33 and 34 at substantially the same height from the side of the seedling feeding device frame 21, and a flexible paper tube supporting belt 31 made of rubber is hung on the shafts 33 and 34. hand over. The receiving end and the sending end of the paper tube support belt 31 are wide enough to stably support the paper tube 93 of the seedling 91 from the center to the bottom, and the running center is pushed down by the guides 32 from both sides. The width is narrowed in an inverted V shape, and only a part of the lower side of the paper tube portion 93 is supported by the top thereof.

A shaft 55 is provided at the sending end of the paper tube supporting belt 31.
The detection belt 51 hung over the paper tube portion support belt 31 is carried, and the paper tube portion support belt 31 carries the paper tube portion 93 of the laterally oriented seedling 91 transferred from the conveyance end of the turning belt 16 and conveys it to the detection belt 51. hand over.

The guide body 32 is a pair of plates provided in the vertical direction parallel to the running direction of the paper tube supporting belt 31, and the lower end of the guide body 32 extends from below the paper tube supporting belt 31 to the seedling feeding device frame 21. Fixed to the side.

Between the shaft 33 of the paper tube portion supporting belt 31 and the guide body 32, a belt support body 35 for supporting the back surface of the upper surface, which is the conveying surface of the paper tube portion supporting belt 31, to its full width is provided. The paper tube portion support belt 31 is not affected by the pushing down by the guide body 32 by the belt support body 35, and a flat surface is provided between the shaft 33 and the belt support body 35 to stably support the paper tube portion 93. The belt support 35 is fixed to the lateral side of the seedling feeder frame 21 from above and below the paper tube support belt 31.

Between the shaft 34 of the paper tube support belt 31 and the guide body 32, a belt support 36 is provided to support the back surface of the upper surface, which is the conveying surface of the paper tube support belt 31, to its full width. The paper tube portion support belt 31 is not affected by the pushing down by the guide body 32 by the belt support body 36, and a flat surface is provided between the shaft 34 and the belt support body 36 to stably support the paper tube portion 93. The belt support 36 is fixed to the lateral side of the seedling feeder frame 21 from above and below the paper tube support belt 31.

A receiving roller 37 for receiving the upper side of the paper tube 93 is provided outside the paper tube support belt 31 at the tip of the shaft 33. The receiving roller 37 and the receiving end of the paper tube supporting belt 31 are
Located below the conveying end of the turning belt 16 and
The whole paper tube portion 93 of the seedling 91 which is dropped from and received from is once received.

A shaft 39 protruding from the seedling feeding device frame 21 is provided between the belt support 36 and the shaft 34, and the shaft 39 is slightly lower than the shafts 33 and 34. A receiving belt 38 that receives the upper side of the paper tube 93 is provided outside the paper tube support belt 31 between the tip of the shaft 39 and the tip of the shaft 34. Since the shaft 39 of the receiving belt 38 is low, the supporting belt 31 of the paper tube portion 31
It is designed to rise to the same height as.

A pair of leaf belt frame support shafts 43 protruding from the seedling feeding device frame 21 are provided below the shafts 33 and 34, and a leaf belt frame 40 is provided above the tip of the leaf belt frame support shaft 43. A drive shaft 44 for supplying power from the seedling feeding device frame 21 to the leaf belt frame 40 is provided between the shaft 33 and the leaf belt frame support shaft 43.

Shafts 45 and 46 are provided at the same height from the upper side of the leaf belt frame 40 toward the seedling feeding device frame 21, and the leaves parallel to the paper tube support belt 31 are provided at the tips of the shafts 45 and 46. Part support belt 41 is hung. The upper surface of the leaf supporting belt 41 is a paper tube supporting belt.
It is located slightly above the upper surface of 31, and the receiving end and the sending end of the leaf supporting belt 41 are made to substantially coincide with the receiving end and the sending end of the paper tube supporting belt 31 in the transport direction of the seedling 91.

Further, between the shafts 33, 34 and the shafts 45, 46, shafts 47, 48 are provided at the same height from the upper side of the leaf belt frame 40 toward the seedling feeding device frame 21. A leaf holding belt 42, which opposes the upper side of the leaf supporting belt 41, is stretched over the tip portion. The lower surface of the leaf holding belt 42 is in contact with the upper surface of the leaf supporting belt 41, and holds the leaf portion 92 of the seedling 91 with the leaf supporting belt 41.

Since the leaf holding belt 42 is shorter than the leaf supporting belt 41, the receiving end and the sending end of the leaf supporting belt 41 and the leaf holding belt 42 are the receiving end and the sending end of the leaf holding belt 42. Therefore, the receiving end and the sending end of the leaf supporting belt 41 and the leaf holding belt 42 are located between the receiving end and the sending end of the paper tube supporting belt 31 in the running direction.

Here, a space between the leaf support belt 41 and the narrow central portion of the paper tube support belt 31 from the belt support 35 to the belt support 36 is defined as the selection space S, and the upper part of the paper tube 93 is provided. The side faces the selection space S, and the defective seedlings fall from the selection space S.

A seedling aligning device 50 as a seedling supplying device 20 is provided in a substantially horizontal direction so as to be connected to the conveyance end of the paper tube supporting belt 31. The seedling alignment device 50 includes a detection belt 51, a detector 53, an alignment roller 61, a sponge roller 64, and a swelling prevention belt 66.
Are provided.

From the side of the seedling feeder frame 21, the shaft 5 is placed at the same height.
5, 56 are provided, and the detection belt 51 is stretched over the shafts 55, 56 in parallel. The detection belt 51 is rotated so that its upper surface moves in the same direction as the upper surface of the paper tube supporting belt 31, and the paper tube 93 of the seedling 91 is conveyed on the upper surface.

The detection belt 51 is provided with a large number of rollers 52 which freely rotate in the conveying direction of the seedling 91. Roller 52
The width of is set to be slightly shorter than the length of the paper tube portion 93, a plurality of large diameter portions and small diameter portions are alternately provided in the longitudinal direction, and the adjacent large diameter portion does not contact the small diameter portions of the rollers 52 adjacent in a row. To get stuck. Then, by rotating the detection belt 51, the roller 52 itself also integrally rotates, and is placed on the large diameter portion of the roller 52 except for the intermediate portion of the paper tube portion 93 of the seedling 91 transferred to the upper surface of the detection belt 51. And then conveys it from the end of the detection belt 51 to the aligning roller 61 in the horizontal direction.

A hole is made in the center of the roller 52 and a pin is inserted in the longitudinal direction, and a link plate having two holes is inserted into the pin for every two adjacent pins on both ends of the roller 52. The plates are connected to form an endless belt. Further, the roller 52 freely rotates about the pin.

A detector frame 57 from the seedling feeding device frame 21 is provided in the central portion between the parallel detection belts 51 and below the upper surface thereof, and the detector 53 is provided with a detector 53 whose height is adjustable. Detector
Reference numeral 53 is a contact type that detects the presence or absence of the paper cylinder portion 93 by contact with the paper cylinder portion 93, and the detector 53 is provided with a detection needle 54 that is tilted upward in the traveling direction of the seedling 91.

The detection needle 54 projects its tip from the surface of the detection belt 51 when the paper tube portion 93 is not detected, and falls down to the same height as the surface of the detection belt 51 when the paper tube portion 93 is placed on the tip thereof.
Then, the detector 53 detects the presence or absence of the detection needle 54 when the detection needle 54 comes into contact with the intermediate portion of the paper tube portion 93 and falls down, and transmits the detection by an electric signal. The protruding height of the detection needle 54 from the surface of the detection belt 51 can be changed by adjusting the height of the detector 53.

An alignment roller 61 is provided which is connected to the detection belt 51 and is lifted to a position higher than the detection belt 51 and conveyed in a convex shape.

A shaft 62 is provided from the side of the seedling feeder frame 21 and
62 rows of three-row alignment rollers, which are thin cylindrical rollers
61 is provided. The alignment rollers 61 are provided between the detection belts 51 arranged side by side and on both sides of the detection belts 51, and are fitted so that their end surfaces do not come into contact with each other in plan view. The height of the convex top of the alignment roller 61 is set higher than the upper surface of the detection belt 51, the upper surface is rotated so as to move in the same direction as the upper surface of the detection belt 51, and the paper tube portion 93 is conveyed on the upper surface. And three rows of alignment rollers 61
The upper portion, the intermediate portion, and the lower portion of the paper tube portion 93 delivered to the upper surface are placed and conveyed, and are fed vertically downward from the horizontal direction along the end surface of the conveyance end of the alignment roller 61.

Above the aligning roller 61, the seedling feeding device frame 21
The sponge roller 64 is provided by being fitted into the tip end portion of the shaft 65 by the shaft 65 provided from. The sponge roller 64 is a cylindrical sponge body, and is rotated so that the lower periphery of the sponge roller 64 moves in the same direction as the upper surface of the aligning roller 61.
The distance from the convex top of the aligning roller 61 to the lower circumference of the sponge roller 64 is set to be substantially the same as 61, and the distance is narrower than the diameter of the paper tube portion 93. Then, the paper tube portion 93 is sandwiched between the convex top portion of the aligning roller 61 and the sponge roller 64 to detect the detection belt 51.
The seedling 91 pushed by is regulated and paid out.

A seedling feeding device frame is provided above the rear half of the detection belt 51.
A bulge prevention belt 66, which is a flat belt, is provided so as to extend from 21 to shafts 67, 68, 69 provided at substantially the same height. The swelling prevention belt 66 has its lower running portion parallel to the upper running surface of the roller 52 of the detection belt 51, and has a space slightly wider than the diameter of the paper tube portion 93 vertically. Then, normally, the paper tube portion 93 on the detection belt 51 is prevented from coming into contact with the swelling prevention belt 66. The start end of the swelling prevention belt 66 is above the tip of the detection needle 54 of the detector 53, and the end thereof is immediately before the sponge roller 64. The width of the rise prevention belt 66 is the detection belt 51.
It is made slightly narrower than the width, and its center is aligned with the centers of the parallel detection belts 51.

Further, the moving direction of the lower traveling portion of the swelling prevention belt 66 is set to be the same as the moving direction of the seedling 91, and its speed is set to be substantially the same as the transfer speed of the seedling 91 of the aligning roller 61. Then, the lower traveling portion of the swelling prevention belt 66 moves at about the same speed as the paper tube portion 93 that is in contact with the swelling prevention belt 66 in an attempt to rise.

In the alignment by the detector 53, the alignment roller 61
And the subsequent speed from the swelling prevention belt 66 and the sponge roller 64 is constant in conjunction with the planting speed regardless of the detection of the paper tube portion 93 of the detector 53, while the separation device 10 to the seedling selection device 30 and The speed up to the detection belt 51 is the detector
It increases or decreases in conjunction with the detection of the paper tube portion 93 of 53. To increase or decrease the speed, two systems are provided for driving power from the grounding wheel 4, one for speed-up and one for speed-down, an electromagnetic clutch is provided on the speed-up drive path, and a freewheel is provided on the speed-down drive path. Is provided
The electromagnetic clutch is connected / disconnected according to the detection signal of the detector 53.

An off-delay timer is provided for the detection signal of the paper tube portion 93 of the detector 53, and the paper tube portion with an interval is provided.
The detection signal for a short time like the detection of 93 is ignored, and the electromagnetic clutch is connected to continue the acceleration. Alignment roller 61 to detector
The paper tube 93 that is closely aligned to reach the top of 53 reaches the paper tube 93 above the detector 53 for more than the set time of the off-delay timer.
When is stopped, the electromagnetic clutch is disengaged to decelerate.

At the time of deceleration, the number of seedlings 91 separated by the separation roller 15 is set to be smaller than the number of seedlings 91 delivered from the alignment roller 61 per unit time, and the seedlings 91 transferred to the alignment roller 61 and the detection belt 51 are used. Seedling 91
To increase the speed. When speeding up, align rollers
The seedling 91 delivered to the 61 and the detection belt 51 is set to have a speed higher than that of the fed seedling 91.

During deceleration, the detection belt 51 and the seedling selection device 30
Although the speed of the belt and the belts in front of it, etc., becomes slower, the traveling speed of the roller 52 of the detection belt 51 is made faster than the speed of the aligning roller 61 even at the lowest conveying speed. Even if this speed is increased, the free rotation of the roller 52 allows the alignment roller
The seedlings 91 on the detection belt 51 that are closely aligned from 61 are not conveyed at the speed of the detection belt 51, but are conveyed at the speed of the alignment roller 61. Also, the seedlings that are not in close contact with each other on the detection belt 51
Since 91 is conveyed by the rotation of the roller 52 itself, the paper cylinder portion 93 with an interval is brought into close contact with the paper cylinder portion 93 which is closely aligned from the alignment roller 61.

When the deceleration continues and the seedling 91 on the detection belt 51 decreases and the paper tube portion 93 disappears on the detector 53, the speed is increased. The paper tube portion 93 on the detection belt 51, which is closely aligned from 61 to the detector 53, is not conveyed at the speed of the detection belt 51, but is conveyed at a speed of being paid out from the alignment roller 61 and the sponge roller 64. Further, since the seedlings 91 that are not in close contact with each other on the detection belt 51 are conveyed by the circulation of the rollers themselves, the paper tube portions 93 with an interval are in close contact with the paper tube portions 93 that are in close contact with each other.

The paper tube portions 93 closely aligned from the aligning roller 61 are shortly arranged from the detector 53 to the aligning roller 61 side at the time of deceleration, and pass long above the detector 53 at the time of increasing the speed. When the set time of the timer is increased, the length of the lines passing over the detectors 53 at the time of acceleration is increased, and the time from the acceleration to deceleration and from the deceleration to the acceleration increases. In other words, the frequency of acceleration / deceleration can be reduced by automatically changing the delay timer to an appropriate length corresponding to the planting speed.

A seedling separating section 70 is provided for receiving the closely aligned seedlings 91 from the seedling arranging section 50 and transporting the seedlings 91 at a higher seedling conveying speed with a gap between the seedlings 91. In the seedling aligning section 50, the seedlings 91 were transported in a generally horizontal direction, but in the seedling spacing section 70, they are transported generally vertically downward.

The seedling separating section 70 is provided with a pair of vertical conveying belts 71. The pair of vertical conveyor belts 71 sandwich the paper tube portion 93 of the seedling 91 and convey the seedling portion 91 substantially vertically downward and deliver it to the planting device 80.

The vertical conveyor belt 71 is provided on the seedling feeding device frame from the front to the bottom and the bottom from the bottom of the conveying end of the alignment roller 61.
The shafts 74, 75 provided from 21 and the shaft of the planting device 80 below are suspended. The pair of vertical conveyor belts 71 is arranged at an interval narrower than the diameter of the paper tube portion 93 of the seedling 91, and the pair of vertical conveyor belts 71 is rotated so that the surfaces facing each other move downward.

The vertical conveying belt 71 conveys the paper tube portion 93 with the middle portion of the paper tube portion 93 protruding and the upper side which is the side of the leaf portion 92 protruding.
The upper part is transferred to a pair of elastic planting disks 81 of the planting device 80.

A detector 72 for detecting the presence or absence of the paper tube portion 93 is provided in the seedling conveying path on the leaf portion 92 side of the vertical conveying belt 71.

A detector frame 76 is provided from the seedling feeder frame 21 at substantially the same height as the lower shaft 74 of the vertical conveyor belt 71.
A detector 72 is provided in the. The detector 72 is a contact type that detects the presence or absence of the paper cylinder 93 by contact with the paper cylinder 93.
Is provided with a detection needle 73 which is oriented in the horizontal direction and traverses the traveling path of the paper tube portion 93 of the seedling conveying path on the leaf portion 92 side of the vertical conveying belt 71.

The detection needle 73 traverses the traveling locus when the paper cylinder portion 93 is not detected, and falls down to the traveling locus when the paper cylinder portion 93 is placed. Then, the detector 72 detects the presence or absence of the detection needle 73 when the detection needle 73 comes into contact with the paper tube portion 93 and falls, and transmits the detection as an electric signal.

When the signal from the detector 72 is interrupted for a predetermined time corresponding to the planting speed, that is, when the planting device 80 is not normally supplied with seedlings, an alarm is issued to inform the operator of the abnormality. Emit.

The planting device 80 is composed of a pair of elastic planting disks 81, and the seedlings 91 delivered from the seedling separating part 70 of the seedling feeding device 20 in the lateral direction are planted on the field E in a standing state.

Next, a second embodiment shown in FIG. 12 and thereafter will be described.

The second embodiment is a seedling selection device 30 of the seedling supply device 20.
In another embodiment of the present invention, the shafts 104, 105, 106, 107 are provided at substantially the same height from the side of the seedling feeding device frame 21, and the shaft 10
A support belt 101 is stretched between the 4 and the shaft 107. The support belt 101 is wide so as to support the upper portions of the leaf portion 92 and the paper tube portion 93, and the paper tube portion is unnecessarily provided on the surface of the seedling feeder frame 21 side.
A large number of small protrusions are provided so that 93 does not move.

A shaft 104 and a shaft are provided between the seedling feeding device frame 21 and the support belt 101 on the lower side of the turning belt 16 and the detection belt 51 side.
The separated seedling receiving belt 102 hung between 105 and the shaft 10
A conveyor belt 103 for sorting seedlings is provided between 6 and the shaft 107. Separated seedling receiving belt 102 and sorted seedling conveying belt 103
Is wide so as to support the middle portion and the lower side of the paper tube portion 93.

A predetermined space is provided between the sending end of the separated seedling receiving belt 102 and the receiving end of the sorted seedling conveying belt 103, and a space between them and the side of the support belt 101 is a sorting space S. The sorting space S faces the middle part and the lower part of the paper tube 93,
Defective seedlings fall from this selection space S.

The support belt 101 on the shaft 104 side and the receiving end portions of the separated seedling receiving belt 102 are located below the conveying end of the turning belt 16 and fall from the turning belt 16 and are transferred to the seedling 91.
The paper cylinder portion 93 and the leaf portion 92 are received at once. The detection belt 51 hung on the shaft 55 is connected to the sending ends of the support belt 101 on the shaft 107 side and the sorted seedling conveying belt 103, and the laterally oriented seedling 91 passed from the conveying end of the turning belt 16 is transferred. It is placed, conveyed, and delivered to the detection belt 51.

A shaft 109 projecting from the seedling feeding device frame 21 is provided above the receiving end of the sorted seedling conveying belt 103, and a sponge roller 108 is fitted to the tip of the shaft 109. The sponge roller 108 is a cylindrical sponge body and has a support belt.
The upper surface of 101 is located on the side of the selection space S, and its lower circumference is rotated so as to travel in the same direction as the upper surface of the support belt 101, and the peripheral speed thereof is made slightly higher than the speed of the support belt 101. The interval between the lower end of the sponge roller 108 and the upper surface of the support belt 101 is narrower than the diameter of the paper tube portion 93, and the paper tube portion that lags behind the receiving end of the sorting seedling conveying belt 103 by sandwiching the upper side of the paper tube portion 93 between them.
93 is forcibly transferred.

A pair of leaf belt frame support shafts 114 projecting from the seedling feeding device frame 21 are provided below the shafts 105 and 106, and a leaf belt frame 110 is provided above the tip of the leaf belt frame support shaft 114. , Seedling feeding device frame between shaft 105 and leaf belt frame support shaft 114
A drive shaft 115 for supplying power from 21 to the leaf belt frame 110 is provided.

Shafts 112, 113 are provided at the same height from the upper side of the leaf belt frame 110 toward the seedling feeding device frame 21.
A leaf holding belt 111, which opposes the upper side of the support belt 101, is stretched over the tip end of 113. Make sure that the lower surface of the leaf holding belt 111 is in contact with the upper surface of the support belt 101.
The leaf portion 92 of the seedling 91 is held between it and 101.

The leaf holding belt 111 is shorter than the supporting belt 101, and the receiving end and the sending end of the supporting belt 101 and the leaf holding belt 111 in the traveling direction of the seedling 91 are the sending end of the separated seedling receiving belt 102. It is located in front of and behind the receiving end of the sorted seedling conveying belt 103.

Next, the operation will be described.

The seedling feeding frame 12 of the separating device 10 is a predetermined moving end thereof, and the paper tube seedling 90 is placed on the seedling feeding belt 13 on the seedling feeding frame 12, and the front end of the paper tube seedling 90 is separated. The 91 rows are fed to a position where they come into contact with the pair of separating rollers 15. As the transplanter progresses, the seedling supply frame 12 reciprocates laterally to move the paper tube seedlings 90.
Reciprocally moves laterally, and the separation roller 15 and the like rotate. By moving the seedling supply frame 12 in the horizontal direction, the row of the separated seedlings 91 in the front row of the paper tube seedlings 90 is moved, and the separating roller 15 is sequentially arranged.
The seedlings 91 are separated from each other by contacting with the front end of.

When the front row of the paper tube seedlings 90 are all separated and the seedling supply frame 12 reaches the moving end, the paper tube seedlings 90 are separated.
Moves vertically by one line of the seedling row by the seedling feeding belt 13, and then the seedling feeding frame 12 laterally moves the paper tube seedling 90 in the opposite direction to start separation of the next row. Further, the seedling supply belt 13 also intermittently moves the paper tube seedlings 90 at the moving end on the opposite side of the seedling supply frame 12, and the seedlings 91 are continuously separated.

The seedling 91 separated by the separating roller 15 is
It is sandwiched between a pair of separation rollers 15 and fed out, sandwiched by a turning belt 13 and turned to a sideways state, and fed out to a seedling selection device 30.

Seedlings 91 dropped and handed over to the seedling selection device 30
Of the paper cylinder 93 is the receiving roller 37 and the paper cylinder supporting belt 31.
One end of the paper tube portion support belt 31 is received at the receiving end portion of the paper tube portion 93, and the paper tube portion support belt 31 extends from the center to the bottom of the paper tube portion 93.
When the upper surface of the paper tube supporting belt 31 is gradually narrowed from the receiving end to the running center, the leaf supporting belt 41 and the leaf holding belt 42 hold the leaf 92, and the paper 92 is held. At the running center of the tubular portion support belt 31, only a part of the lower portion of the paper tubular portion 93 is supported.

Therefore, in the sorting space S, the good seedlings having the normal leaf portion 92 are supported by the paper tube portion 93 by the paper tube portion support belt 31 and the leaf portion 92 by the leaf part support belt 41 and the leaf part holding belt 42.
It is carried as it is because it is held by the leaf part 92, but the leaf part 92 is missing or small.
Since the paper tube portion 93 is only supported by the paper tube portion support belt 31 without being held by the leaf paper holding belt 42, it loses balance and falls into the selection space S and is discharged to the outside of the system.

When the width of the upper surface of the paper tube portion support belt 31 gradually increases from the running center portion to the delivery end portion, the holding of the leaf portion 92 by the leaf portion supporting belt 41 and the leaf portion holding belt 42 is released, and the paper The tubular portion support belt 31 carries the lower portion from the central portion of the paper tubular portion 93 and the leaf portion supporting belt 41 carries the leaf portion 92, and then the receiving belt 38 carries the upper portion of the paper tubular portion 93 and carries them. From the sending end of the sheet to the detection belt 51.

At this time, the width of the upper surface of the paper tube portion support belt 31 gradually becomes narrower from the receiving end portion to the running center portion, so that the support of the paper tube portion 93 of the paper tube portion support belt 31 gradually decreases. The position of the seedling row is not disturbed because the position of the leaf portion 92 does not change due to the leaf portion 92 coming off from the holding by the leaf portion supporting belt 41 and the leaf portion holding belt 42. Further, since the width of the upper surface of the paper tube portion support belt 31 gradually becomes wider from the traveling center portion to the delivery end portion, the paper tube portion 93 of the paper tube portion support belt 31 gradually increases in support so that it is lifted up. Since there is no time delay until the seedling row posture is not disturbed. Further, the paper tube portion 93 supports the paper tube portion support belt 31.
Since it is only necessary to use a large number of belts and the conveyance speed of the seedlings 91 is not different, the posture of the seedling row is not disturbed.

The seedling 91 delivered to the detection belt 51 is conveyed by the paper cylinder portion 93 placed on the large diameter portion of the roller 52 with an interval, and is aligned from the alignment roller 61 to the paper cylinder portion 93 closely aligned. The roller 52 below the paper tube portion 93 that catches up and comes into close contact and is closely aligned is freely rotated and conveyed at the speed of the alignment roller 61. When the paper cylinders 93 that are closely aligned are lined up on the detector 53, the paper cylinder 93 tilts the detection needle 54 to the same height as the surface of the detection belt 51 for a predetermined time or more, and the detection signal causes the seedling 91 to be supplied. Decrease. Further, when the paper cylinders 93 that are closely aligned disappear from the detector 53, the detection needle 54 projects from the surface of the detection belt 51, and the non-detection signal increases the supply of the seedlings 91.

At this time, the protrusion height of the detection needle 54 is determined by the paper tube portion 93.
The detection needle 54 falls to the same height as the surface of the detection belt 51 when it comes into contact with the paper tube portion 93.
Does not obstruct the progress of the paper tube portion 93 due to excessive protrusion,
Moreover, the presence or absence of the paper tube portion 93 cannot be detected due to the small protrusion of the detection needle 54, and it is possible to reliably detect and control. Further, the detector 53 detects the presence or absence of the contact, so that it can be detected and controlled reliably without being undetectable by sunlight.

The paper tube portion closely aligned on the detection belt 51
The swelling prevention belt 66 above 93 detects the detection belt 51
From the paper cylinder 93 that is closely aligned with the alignment roller 61
Prevents swelling even if is pushed horizontally. In addition, since the paper tube portion 93 does not normally contact the swelling prevention belt 66, the paper tube portion 93 which is conveyed by the rotation of the roller 52 itself does not interfere with the rapid movement of the paper tube portion 93, and the closely aligned paper sheets are not disturbed. It catches up with the tube portion 93 and comes into close contact with it.

The seedling 91 transferred from the detection belt 51 to the alignment roller 61 is lifted to a position higher than the detection belt 51, and the paper tube portion is interposed between the sponge roller 64 and the alignment roller 61.
93 is picked up and handed over from the horizontal direction to the seedling separating section 70 vertically downward along the end surface of the transporting end of the aligning roller 61.

At this time, the paper tube portion 93 does not rise to a high position by contact with only the aligning roller 61, and is pushed by the paper tube portion 93 on the succeeding detection belt 51 while the leading side is waiting, and the aligning roller portion is pressed. Since it climbs the convex portion of 61, the delayed side catches up with the leading side, and the disturbance of the posture can be corrected without changing the speed of the seedling 91.

Seedling 91 transferred to a pair of vertical conveyor belts 71
Is transported at a predetermined distance, its presence or absence is detected by the detector 72 that comes into contact with the paper tube portion 93, is supplied to the elastic planting disk 81 of the planting device 80, and is planted on the field E.

At this time, since the paper tube portion 93 is sufficiently projected toward the leaf portion 92 side of the vertical conveyor belt 71, even if the amount of projection is slightly reduced due to the disturbance of the seedling row, the detector 72 is provided with the paper tube portion 93. Can be reliably detected and unnecessary alarms are not issued.

Next, the operation of the second embodiment will be described.

Seedlings 91 dropped and handed over to the seedling selection device 30
The paper tube portion 93 and the leaf portion 92 are entirely received at the receiving end portions of the support belt 101 and the separated seedling receiving belt 102, and the support belt 101 separates the leaf portion 92 and the upper portion of the paper tube portion 93 from each other. The receiving belt 102 is conveyed with the middle portion and the lower side of the paper tube portion 93 placed, the leaf portion 92 is held between the support belt 101 and the leaf holding belt 111, and the sorting space S is provided at the sending end of the separated seedling receiving belt 102.
Reach

In the selection space S, the good seedlings having the normal leaf portion 92 are supported by the support belt 101 on the upper side of the paper tube portion 93, and the leaf portion 92 is held between the support belt 101 and the leaf portion holding belt 111. However, if the seedlings are missing or small, the leaf 92 is not held between the support belt 101 and the leaf holding belt 111, and the upper side of the paper tube portion 93 is supported by the support belt 101. Therefore, it is lost in balance, falls into the selection space S, and is discharged out of the system.

At this time, since the good seedlings having the normal leaf portion 92 are supported by the support belt 101 on the upper side of the paper tube portion 93 and do not come into contact with the lower side, the leaf portion 92 is weak and the weight of the paper tube portion 93 is small. Even large seedlings 91 are reliably transported and handed over to the next stage.

The seedlings 91 that have reached the receiving end of the sorted seedling conveying belt 103 are the lower end of the sponge roller 108 and the support belt 101.
The upper portion of the paper tube 93 is sandwiched between the upper surfaces of the paper tube 93 and the paper tube 93 that is about to be delayed at the receiving end of the sorted seedling transport belt 103 is forcibly transferred onto the sorted seedling transport belt 103. Then, the holding of the leaf portion 92 by the support belt 101 and the leaf portion holding belt 111 is released, and the support belt 101 separates the leaf portion 92 and the upper side of the paper tube portion 93 from each other. The parts and the lower part are placed and conveyed, and the parts are delivered from the sending end part to the detection belt 51.

In the above embodiments, the seedlings 91 with the soil-shaped portion were formed.
As a paper tube seedling 90 with a paper tube nursery container was shown as
The soil itself is solidified, the seedling culture medium itself is made of inorganic fibers or polymer compounds that form a regular part, the one that is separably connected to each individual seedling 91, or the individual seedling 91 already It may be separated.

Although the guide member 32 is shown as being in contact with the paper tube supporting belt 31 by a pair of fixing plates, it may be contacted by a rotating member so as to reduce the contact resistance with the paper tube supporting belt 31. .

Although the cylindrical roller is shown as the aligning roller 61, it may be a belt which is lifted to a higher position and conveyed in a convex shape.

Further, although the alarm detector 72 is shown as a detector for contacting with the paper tube portion 93, it may be a photoelectric switch for contactless detection.

[0117]

According to the first aspect of the present invention, the width of the upper surface of the paper tube supporting belt is gradually narrowed from the receiving end portion to the running central portion. Therefore, the paper tube supporting belt is not supported. Since the number of leaves gradually decreases, the position of the seedling row is not disturbed because the position of the leaves does not change due to the leaves coming off from being held by the leaves supporting belt and the leaves holding belt.

Further, since the width of the upper surface of the paper tube supporting belt gradually increases from the running center to the sending end, the paper tube supporting belt gradually supports the paper tube, so that
Since there is no time delay before it gets up, the posture of the seedlings will not be disturbed.

Further, since only the paper tube supporting belt is required to support the paper tube portion, a large number of belts are not required and the seedling transfer speed does not differ, so that the posture of the seedling row is not disturbed.

According to the second aspect of the present invention, the protruding height of the detection needle can be adjusted according to the paper tube portion, and when the detection needle comes into contact with the paper tube portion, it falls to the same height as the surface of the detection belt. Without over-protruding and obstructing the progress of the paper cylinder,
Moreover, the presence or absence of the paper tube portion cannot be detected due to the small protrusion of the detection needle, and it is possible to reliably detect and control. Further, the detector detects the presence or absence of the contact, so that the detector does not become undetectable by sunlight and can be reliably detected and controlled.

According to the third aspect of the present invention, the paper tube portion does not rise to a high position by contact with only the aligning rollers, and is pushed by the paper tube portion on the subsequent detection belt while the leading side is waiting. Since the convex portion of the aligning roller rises, the delayed side catches up with the leading side, and the posture disorder can be corrected without changing the seedling speed.

According to the invention of claim 4, since the paper tube portion is sufficiently projected to the leaf portion side of the vertical conveyor belt, even if the projection amount is slightly reduced due to the disturbance of the seedling row, the detector is a paper tube portion. The parts can be detected reliably, and unnecessary alarms are not issued.

According to the invention of claim 5, a good seedling having a normal leaf portion is supported by the support belt on the upper side of the paper tube portion and does not come into contact with the lower side. Even heavy seedlings are reliably transported and delivered to the next stage.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a transplanter equipped with a seedling supply device.

FIG. 2 is a front view thereof.

FIG. 3 is a partially enlarged rear view of the same.

FIG. 4 is a partially enlarged plan view showing the seedling supply device.

FIG. 5 is a partially enlarged view showing the seedling selection device of FIG.

FIG. 6 is a partially enlarged view showing a seedling sorting device in which a part of FIG. 3 is cut away.

7 is a sectional view taken along the line AA of FIG.

FIG. 8 is a partially enlarged view in which a part of FIG. 4 is cut away.

FIG. 9 is a partially enlarged view in which a part of FIG. 3 is cut away.

10 is a partially enlarged view showing a detector in which a part of FIG. 9 is cut away.

11 is a partially enlarged view in which a part of FIG. 9 is cut away.

FIG. 12 is a plan view showing a second embodiment of the seedling sorting device.

FIG. 13 is a rear view thereof.

FIG. 14 is a side view thereof.

[Description of sign]

 20 Seedling supply device 31 Paper tube support belt 32 Guide body 41 Leaf support belt 42 Leaf holding belt 50 Seedling alignment section 51 Detection belt 52 Roller 53 Detector 54 Detection needle 61 Alignment roller 70 Seedling separation section 71 Vertical transfer belt 72 Detector 80 Planting device 91 Seedling 92 Leaf section 93 Paper tube section 101 Support belt 102 Separation seedling receiving belt 103 Sorting seedling conveying belt 111 Leaf holding belt S Sorting space

Claims (5)

[Claims] 1. A device for feeding seedlings separated into individual seedlings to a planting device, wherein a leaf support belt and a paper tube support belt which are parallel to each other are provided, and a receiving end of the paper tube support belt is provided. The delivery end is wide enough to support the center of the paper tube of the seedling stably, and the width of the paper tube support belt is pushed down by the guides on both sides of the running center to reduce the width. A seedling feeding device for a transplanter in which only a leaf supporting belt is provided above the leaf supporting belt as a sorting space between the central portion of the paper tube supporting belt and the leaf supporting belt. 2. In a device for supplying seedlings separated into individual seedlings to a planting device, a detection belt is provided in parallel with a seedling alignment part for supplying seedlings to the planting device, and the detection belt conveys the seedlings. A large number of rollers that rotate freely in the direction are provided, and the rollers themselves also rotate to carry the seedlings and convey them, and a detector is installed between the detection belts to detect the presence or absence of the paper tube part of the seedlings from below. The container is equipped with a detection needle that comes into contact with the paper cylinder and detects the presence or absence of the paper cylinder.When the paper cylinder is not detected, the detection needle protrudes from the surface of the detection belt, and the protrusion height of the detection needle is adjustable. Transplanter seedling supply device. 3. An apparatus for feeding seedlings separated into individual seedlings to a planting apparatus, and a seedling aligning section that conveys the paper tube of the seedlings in close contact with each other and a seedling receiving section from the seedling aligning section. The seedling separating section is provided to convey seedlings at high speed with a gap between them, and the seedlings are conveyed horizontally in the seedling aligning section and generally vertically downward in the seedling separating section, and the paper tube section of the seedlings is conveyed in the seedling aligning section. A seedling feeding device for a transplanter that uses a detection belt that conveys the path horizontally and an alignment roller that raises it to a higher position and conveys it in a convex shape. 4. A seedling aligning unit for feeding the seedlings separated into individual seedlings to the planting device by closely aligning the paper cylinders of the seedlings with each other, and receiving the seedlings from the seedling aligning unit. The feeding speed is fast, and a seedling separating section is provided to convey seedlings at an interval. In the seedling separating section, a pair of vertical conveying belts sandwich the paper tube portion of the seedlings and convey the seedlings generally vertically downward. Seedling supply device of a transplanter equipped with a detector for detecting the presence or absence of a paper tube part in the seedling transportation route of. 5. In a device for supplying seedlings separated into individual seedlings to a planting device, a support belt for supporting the upper side of the leaf portion and the paper tube portion and a side thereof supporting a lower side of the paper tube portion. A seedling seedling for a transplanter in which a sorting belt is provided in front of the supporting belt in the sorting space, a separate seedling receiving belt is provided at the rear in the traveling direction of the sorting space, and a leaf holding belt is provided above the supporting belt. Supply device.