JP2005046120A - Apparatus for separating raising seedling box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a raising seedling box separation apparatus to surely separate an upper raising seedling box from stacked boxes even if the upper raising seedling box on the stacked boxes is inclined. <P>SOLUTION: This raising seedling box separating apparatus has a connection mechanism 21 contractible from a prescribed length and unable to elongate from the prescribed length and extended between a holding part 19 corresponding to an end in the longitudinal direction A1 of the upper raising seedling box 1 and an upper supporting part 18, and covering the holding part 19 corresponding to the other end in the longitudinal direction A1 of the upper raising seedling box 1 and the upper supporting part 18. The holding part 19 is brought into contact along the upper raising seedling box 1 by approaching a raising seedling box supporting part to the upper supporting part 18 to support the upper raising seedling box 1 with the supporting part 18. The upper raising seedling box 1 is separated from the stacked raising seedling boxes 1 with the holding part 19 by separating the raising seedling box supporting part from the upper supporting part 18. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a seedling box separation device for separating a seedling box (about one or two or three) from the upper part of a stacked seedling box (such as an empty seedling box or a seeded seedling box).

  For example, in a rice seedling facility, as disclosed in Patent Document 1, a fork (19 in FIG. 1 of Patent Document 1) and a crane (in FIG. 1 of Patent Document 1) that support stacked seedling boxes E), a lifting device (F in FIG. 1 of Patent Document 1) and a greening carriage (C in FIG. 1 of Patent Document 1). According to the structure of Patent Document 1, the stacked seedling boxes are supported by a fork, the upper nursery box of the stacked seedling boxes is separated by a crane, and the upper nursery box is moved to the lifting device by the crane. It is moved to the shelf of the greening cart (1 in FIG. 1 of Patent Document 1) by the lifting device, and the above operation is repeated, so that the stacked nursery boxes are separated and the shelf of the greening cart Moved to.

When seedling boxes are stacked, soil or garbage is caught in the overlapping parts, or parts that cannot be stacked normally are generated, so that the seedling boxes are tilted and stacked, or the seedling boxes are stacked normally. However, the seedling box may be pushed up and tilted by the growth of the seedling. Thereby, when the upper seedling box of the stacked seedling boxes is inclined, it is considered that the upper seedling box is not well separated from the stacked seedling boxes.
In this case, for example, there is one having a seedling box separation structure as disclosed in Patent Document 2. In the structure of Patent Document 2, an air cylinder (36 in FIG. 7 of Patent Document 2) is fixed to a substrate (35 in FIG. 7 of Patent Document 2), and a flat plate (in FIG. 7 of Patent Document 2). 31), air cylinders are tiltably connected to the front, rear, left and right central portions. A spring (38 in FIG. 7 of Patent Document 2) is connected across the substrate and the lateral outer side of the flat plate, and a holding member (32 in FIG. 7 of Patent Document 2) for holding the seedling box is provided on the flat plate. It has been.

As a result, according to the structure of Patent Document 2, as shown in FIG. 7 of Patent Document 2, even when the nursery box on the top of the stacked seedling boxes is tilted, the flat plate is driven downward by the air cylinder. The flat plate is inclined so as to be along the upper nursery box with the portion to which the air cylinder is connected as a fulcrum, and the upper nursery box is held by the holding member. Next, when the flat plate is driven up by the air cylinder, the upper nursery boxes are separated from the stacked nursery boxes.
Especially in seedling boxes that have been sown, soil and the like may fall downward from the stacked seedling boxes. However, as in the structures of Patent Documents 1 and 2, the nursery box at the top of the stacked seedling boxes is separated. If comprised in this way, since soil etc. will not fall from the seedling box piled up by the mechanism which isolate | separates an upper nursery box, it will hardly develop to failure of the mechanism etc. which isolate | separate an upper nursery box.

Japanese Examined Patent Publication No. 4-81410 (Figs. 1, 6, 7) Japanese Patent No. 2616016 (FIGS. 6 and 7)

  According to the structure of Patent Document 2, the air cylinder is connected to the front, rear, left and right central portions of the flat plate so that the flat plate can be tilted with a portion to which the air cylinder is connected as a fulcrum. As a result, after the flat plate holds the upper seedling box of the stacked seedling boxes, when the flat plate is driven to rise by the air cylinder, the upward driving force of the air cylinder is substantially evenly applied to the upper seedling box through the flat plate. Since it will be in a state where it is hung and each part of the upper nursery box is about to be separated from the stacked seedling boxes almost simultaneously, the upward driving force of the air cylinder is dispersed, and the upper nursery box becomes It may be in a state where it is not separated well from the stacked seedling boxes.

  Next, according to the structure of Patent Document 2, when the upper seedling box is lifted after being separated from the stacked seedling boxes, the spring connected across the lateral outer side of the substrate and the flat plate expands and contracts. In addition, since the upper nursery box may be greatly inclined in the longitudinal direction, it is conceivable that the upper nursery box cannot be successfully transferred to the next step.

  In the seedling box separation device of the present invention, even if the upper seedling box of the stacked seedling boxes is tilted, the upper nursery box is configured to be well separated from the stacked seedling boxes, It is intended that the upper nursery box can be appropriately transferred to the next step after being separated from the stacked nursery boxes.

[I]
(Constitution)
The first feature of the present invention is that the seedling box separation device is configured as follows.
A seedling box support part that supports the stacked seedling boxes, an upper support part that is positioned above the stacked seedling boxes, and a lifting mechanism that drives the raising and lowering of the seedling box support part or the upper support part. A holding part that can hold and release the upper seedling box of the stacked seedling boxes is provided, and extends between the holding part corresponding to one end side part in the longitudinal direction of the upper seedling box and the upper support part. Connecting a connection mechanism that can contract from a predetermined length and cannot extend from a predetermined length, and spans the holding portion corresponding to the other end side portion in the longitudinal direction of the upper nursery box and the upper support portion; A connection mechanism that can contract from a predetermined length and cannot extend from a predetermined length is connected. By bringing the seedling box support part and the upper support part close by the lifting mechanism, the holding part becomes in a state along the upper seedling box, the holding part holds the upper seedling box, and the holding part holds the upper seedling box. In this state, by separating the seedling box support part and the upper support part by the lifting mechanism, the upper seedling box is separated from the stacked seedling boxes by the holding part.

(Function)
According to the first feature of the present invention, when the upper seedling boxes of the stacked seedling boxes are tilted, the longitudinal direction of the upper nursery box is set when the raising seedling box support part and the upper support part are brought close to each other by the lifting mechanism. The connection mechanism on the one end side and the other end side of the base plate contract from a predetermined length so that the holding portion is in a state along the upper nursery box, and the holding portion holds the upper nursery box.

For example, when the upper nursery box is tilted so that one end side in the longitudinal direction of the upper nursery box is on the lower side and the other end side in the longitudinal direction of the upper nursery box is on the upper side (upper raising seedling The connection mechanism on one end side in the longitudinal direction of the box contracts to a degree slightly shorter than the predetermined length, and the connection mechanism on the other end side in the longitudinal direction of the upper nursery box contracts sufficiently shorter than the predetermined length. State), after the holding unit holds the upper nursery box, if the raising and lowering mechanism separates the seedling box support part and the upper support part, one end and the other end side in the longitudinal direction of the upper seedling box The connecting mechanism on the one end side in the longitudinal direction of the upper nursery box reaches a predetermined length and cannot be extended.
Therefore, the driving force when the seedling box support part and the upper support part are separated by the lifting mechanism is mainly applied to one end side in the longitudinal direction of the upper seedling box via the connection mechanism, One end side in the longitudinal direction of the seedling box is separated from the stacked seedling boxes.

  If the seedling box support part and the upper support part are further separated by the lifting mechanism, the connection mechanism on the other end side in the longitudinal direction of the upper seedling box reaches the predetermined length and cannot be extended. The driving force when separating the seedling box support part and the upper support part by the mechanism is mainly applied to the other end side in the longitudinal direction of the upper nursery box via the connection mechanism, and the upper nursery box The other end side in the longitudinal direction is separated from the stacked seedling boxes. In this way, the upper nursery box is separated from the stacked nursery boxes.

  As described above, according to the first feature of the present invention, after the holding unit holds the upper seedling box, when the raising / lowering mechanism separates the seedling box support part and the upper support part, the raising / lowering mechanism supports the seedling box support part. The driving force when the upper support part is separated from the upper seedling box is not applied to the upper nursery box substantially evenly, but mainly applied to one end side in the longitudinal direction of the upper nursery box, Next, since it is in a state where it mainly hangs on the other end side in the longitudinal direction of the upper nursery box, the upper nursery box is appropriately separated from the stacked nursery boxes.

According to the first feature of the present invention, when the upper nursery box is separated from the stacked nursery box by the holding part as described above, one end and the other end side connection in the longitudinal direction of the upper nursery box are connected. Since the mechanism cannot be extended, the state in which the holding portion and the upper nursery box are inclined in the longitudinal direction is suppressed by the connection mechanism.
In this case, a connection mechanism is provided on one end and the other end side in the longitudinal direction of the upper nursery box, and the interval between the connection mechanisms on the one end side and the other end side in the longitudinal direction of the upper seedling box is wide. Since it is a thing, the state in which a holding | maintenance part and an upper seedling box incline in a longitudinal direction is appropriately suppressed by a connection mechanism.

(The invention's effect)
According to the first feature of the present invention, in the seedling box separation device, the driving force when the seedling box support part and the upper support part are separated by the lifting mechanism is on one end side in the longitudinal direction of the upper seedling box. The main nursery box is configured to hang mainly on the other end in the longitudinal direction of the upper nursery box, so that the upper nursery box is properly separated from the stacked nursery boxes. The performance of the seedling box separation device could be improved.

  According to the first feature of the present invention, when the upper seedling box is separated from the stacked seedling boxes, the connection mechanism can appropriately suppress the state in which the holding unit and the upper seedling box are inclined in the longitudinal direction. Therefore, it is possible to avoid a situation where the upper nursery box is not transferred to the next process due to the inclination of the upper nursery box, and the performance of the nursery box separation device can be improved. did it.

  According to the first feature of the present invention, since the upper support part, the holding part and the connection mechanism are located above the stacked seedling boxes, the soil is transferred from the stacked seedling box to the upper support part, the holding part and the connection mechanism. As in the structures of Patent Documents 1 and 2, the upper support portion, the holding portion, and the connection mechanism are unlikely to break down.

[II]
(Constitution)
The second feature of the present invention resides in the following configuration in the seedling box separation device of the first feature of the present invention.
An accommodation portion is provided that allows the holding portion to be inclined with respect to the upper support portion in a direction crossing the longitudinal direction of the upper nursery box.

(Function)
According to the second feature of the present invention, the “action” described in the preceding item [I] is provided in the same manner as the first feature of the present invention, and in addition to this, the following “action” is provided.
It is conceivable that the seedling box on the upper part of the stacked seedling boxes is inclined in the direction intersecting with the longitudinal direction in addition to the case where it is inclined in the longitudinal direction. Thereby, according to the 2nd characteristic of this invention, when the raising seedling box support part and the upper support part are made to approach by the raising / lowering mechanism, the connection mechanism on the one side and the other end side in the longitudinal direction of the upper raising seedling box In addition to contracting from the predetermined length and tilting the holding part along the longitudinal direction of the upper nursery box, the holding part tilts along the direction intersecting the longitudinal direction of the upper nursery box. Thus, according to the 2nd characteristic of this invention, since a holding part inclines so that an upper nursery box may be followed well, an upper nursery box will be appropriately hold | maintained by a holding part.

(The invention's effect)
According to the second feature of the present invention, the “effect of the invention” described in the preceding item [I] is provided in the same manner as the first feature of the present invention. In addition, the following “effect of the invention” is provided. ing.
According to the second feature of the present invention, the holding part is inclined so as to be well along the upper seedling box, and the upper seedling box is appropriately held by the holding part, and the upper seedling box is stacked. It came to be separated appropriately from the box, and the performance of the seedling box separation device could be improved.

[III]
(Constitution)
The third feature of the present invention resides in the following configuration in the seedling box separation device of the first or second feature of the present invention.
An accommodation portion is provided that allows the holding portion to move laterally with respect to the upper support portion.

(Function)
According to the third feature of the present invention, the “action” described in the preceding item [I] [II] is provided in the same manner as the first or second feature of the present invention. In addition, the following “action” is provided. It has.
If there are many tilted seedling boxes in the stacked seedling boxes, the upper seedling boxes of the stacked seedling boxes as described in [I] and [II] above are tilted. There is a case where the position of the nursery box is slightly moved in the horizontal direction (see, for example, FIG. 26).

According to the third aspect of the present invention, since the holding part is allowed to move laterally with respect to the upper support part, the position of the upper seedling box is slightly changed in the horizontal direction as described above. Even if it is moving, when the raising seedling box support part and the upper support part are brought close to each other by the lifting mechanism, the holding part is moved in the lateral direction so that the holding part is well along the upper nursery box. it can. Thus, according to the 3rd characteristic of this invention, since a holding | maintenance part can be made into the state which follows an upper nursery box well, an upper nursery box will be hold | maintained appropriately by a holding | maintenance part.
In this case, since the holding part is sufficiently light with respect to the stacked seedling boxes, according to the third feature of the present invention, when the raising seedling box support part and the upper support part are brought close to each other by the lifting mechanism, the holding part is It is possible to easily move in the lateral direction so that the holding part is well along the upper nursery box.

(The invention's effect)
According to the third feature of the present invention, the “effect of the invention” described in the preceding paragraphs [I] and [II] is provided in the same manner as the first or second feature of the present invention. The effect of the invention is provided.
According to the third feature of the present invention, even if the position of the upper nursery box is slightly moved in the horizontal direction, the holding part easily moves in the horizontal direction and is well along the upper nursery box. As a result, the upper nursery box is properly held, and the upper nursery box is appropriately separated from the stacked nursery boxes, thereby improving the performance of the seedling box separation device.

[IV]
(Constitution)
The fourth feature of the present invention is the seedling box separation device according to any one of the first to third features of the present invention, wherein the line segment connecting the plurality of connection mechanisms in the plan view of the holding part is the longitudinal direction of the upper seedling box The connection mechanism is arranged so as to cross the line.

(Function)
According to the 4th characteristic of this invention, it is equipped with "action" of previous clause [I]-[III] similarly to any one of the 1st-3rd characteristics of this invention, In addition to this, It has the following “actions”.
In the stacked seedling boxes, unlike the case where the seedling box is tilted, the upper seedling box may be displaced laterally in the direction intersecting the longitudinal direction with respect to the lower seedling box. is there. In such a state, after the holding unit holds the upper seedling box, when the upper seedling box is separated from the stacked seedling boxes, the holding unit and the upper seedling box are long around the longitudinal axis. Sometimes it tries to tilt in a direction that intersects the direction.

  According to the fourth feature of the present invention, the connection mechanism is arranged so that the line segment connecting the plurality of connection mechanisms intersects the longitudinal direction of the upper nursery box, and the holding portion connects the line segments connecting the plurality of connection mechanisms. Try to tilt around. Thereby, after the holding unit holds the upper seedling box in the case where the upper seedling box is shifted laterally in the direction intersecting the longitudinal direction with respect to the seedling boxes stacked as described above, When the upper nursery box is separated from the stacked seedling boxes, the upper nursery box crosses the longitudinal direction of the upper nursery box even if the upper nursery box is inclined in the direction intersecting the longitudinal direction around the longitudinal axis. The holding part and the upper nursery box interfere with each other's inclination, so that the holding part and the upper nursery box are interfered with each other. Is prevented from inclining in the direction intersecting the longitudinal direction around the longitudinal axis.

(The invention's effect)
According to the fourth feature of the present invention, the “effect of the invention” described in the preceding paragraphs [I] to [III] is provided similarly to any one of the first to third features of the present invention. In addition, the following “effects of the invention” are provided.
According to the fourth aspect of the present invention, when the upper nursery box is shifted laterally in the direction intersecting the longitudinal direction with respect to the stacked nursery boxes, the holding unit is provided with the upper nursery box. After holding, when the upper nursery box is separated from the stacked seedling boxes, the holding part and the upper nursery box should properly tilt around the longitudinal axis in the direction intersecting the longitudinal direction. It becomes possible to suppress the situation where the upper nursery box is not successfully transferred to the next process due to the inclination of the upper nursery box, The performance could be improved.

[V]
(Constitution)
The fifth feature of the present invention resides in the following configuration in the seedling box separation device of any one of the first to fourth features of the present invention.
A holding member is configured by including a holding member that can hold and release one end and the other end in the longitudinal direction of the upper nursery box.

(Function)
According to the fifth aspect of the present invention, the “action” described in the preceding paragraphs [I] to [IV] is provided similarly to any one of the first to fourth characteristics of the present invention. It has the following “actions”.
According to the fifth aspect of the present invention, as described in [I] above, after the holding unit holds the upper seedling box, the raising and lowering mechanism separates the seedling box support unit and the upper support unit, and the lifting mechanism When the driving force when the seedling box support part and the upper support part are separated from each other is mainly applied to one end side in the longitudinal direction of the upper seedling box via the connection mechanism, the raising and lowering mechanism raises the seedling box The driving force when the support portion and the upper support portion are separated from each other is surely applied to one end portion of the upper nursery box from the holding member of the holding portion.

  Next, when the driving force when the seedling box support part and the upper support part are separated by the lifting mechanism is mainly applied to the other end side in the longitudinal direction of the upper nursery box via the connection mechanism, The driving force when the raising seedling box supporting part and the upper supporting part are separated by the lifting mechanism is surely applied from the holding member of the holding part to the other end of the upper raising seedling box. In this way, the upper nursery box is separated from the stacked nursery boxes.

(The invention's effect)
According to the fifth feature of the present invention, the “effect of the invention” described in the preceding paragraphs [I] to [IV] is provided as in any one of the first to fourth features of the present invention. In addition, the following “effects of the invention” are provided.
According to the fifth feature of the present invention, the driving force when the seedling box support part and the upper support part are separated by the lifting mechanism is surely applied to one end side in the longitudinal direction of the upper seedling box, By configuring the upper nursery box to be surely hooked to the other end in the longitudinal direction, the upper nursery box is appropriately separated from the stacked nursery boxes, and The performance could be improved.

[VI]
(Constitution)
The sixth feature of the present invention resides in the following configuration in the seedling box separation device of any one of the first to fifth features of the present invention.
When the upper nursery box is separated from the stacked nursery box by the holding part by separating the nursery box support part and the upper support part by the lifting mechanism, the upper nursery box and the stacked nursery box are forced A separation mechanism is provided for separation.

(Function)
According to the sixth aspect of the present invention, the “action” described in the preceding paragraphs [I] to [V] is provided in the same manner as any one of the first to fifth aspects of the present invention. It has the following “actions”.
As described in [I] above, after the holding unit holds the upper seedling box, when the raising seedling box support unit and the upper support unit are separated by the lifting mechanism, a part of the stacked seedling box is May stick to the nursery box.

  According to the sixth feature of the present invention, since the separation mechanism for forcibly separating the upper seedling box and the stacked seedling boxes is provided, after the holding unit holds the upper seedling box as described above, When the raising and lowering mechanism separates the seedling box support part and the upper support part, even if a part of the stacked seedling box adheres to the upper seedling box, a part of the seedling box stacked by the separation mechanism It is forcibly separated from the upper nursery box.

(The invention's effect)
According to the sixth aspect of the present invention, as in any one of the first to fifth aspects of the present invention, the “effect of the invention” described in the preceding paragraphs [I] to [V] is provided. In addition, the following “effects of the invention” are provided.
According to the sixth aspect of the present invention, after the holding part holds the upper seedling box, when the raising seedling box support part and the upper support part are separated by the lifting mechanism, a part of the stacked seedling box is the upper seedling raising It was possible to avoid the state of adhering to the box, and the performance of the seedling box separation device could be improved.

[VII]
(Constitution)
The seventh feature of the present invention resides in the following configuration in the seedling box separation device of any one of the first to sixth features of the present invention.
In a state where the upper seedling box is separated from the stacked seedling boxes by the holding unit, a regulation unit is provided that regulates a state in which the holding unit is inclined in a direction intersecting with the longitudinal direction of the upper seedling box.

(Function)
According to the seventh aspect of the present invention, in addition to any one of the first to sixth characteristics of the present invention, the “action” described in the preceding items [I] to [VI] is provided. It has the following “actions”.
After the holding part holds the upper seedling box, the raising mechanism lifts the seedling box support part and the upper support part, and when the upper seedling box is separated from the stacked seedling boxes, the connection mechanism The holding part and the upper nursery box are in a suspended state, and the holding part and the upper nursery box are inclined to intersect with the longitudinal direction of the upper nursery box. According to the feature, the state in which the holding unit and the upper nursery box are inclined in the direction intersecting with the longitudinal direction of the upper nursery box is regulated by the regulating unit.

(The invention's effect)
According to the seventh feature of the present invention, as in any one of the first to sixth features of the present invention, the “effect of the invention” described in the preceding paragraphs [I] to [VI] is provided. In addition, the following “effects of the invention” are provided.
According to the seventh feature of the present invention, when the upper nursery box is separated from the stacked nursery box by the holding part, and the holding part and the upper nursery box are suspended by the connection mechanism, The state in which the holding part and the upper nursery box are inclined in the direction intersecting with the longitudinal direction of the upper nursery box is regulated, and the upper nursery box is transferred to the next process by the inclination of the upper nursery box. As a result, it was possible to avoid a situation where the seedling box was not performed well, and the performance of the seedling box separation apparatus could be improved.

[VIII]
(Constitution)
The eighth feature of the present invention resides in the following configuration in the seedling box separation device of any one of the first to seventh features of the present invention.
The holding part corresponding to the center part in the longitudinal direction of the upper nursery box is provided with a sensor for detecting that the upper holding part has been approached beyond a predetermined distance. Based on the detection of the sensor, the holding part is It comprises so that it may judge that it contacted along the nursery box.

(Function)
According to the eighth feature of the present invention, the “action” described in the preceding items [I] to [VII] is provided in the same manner as any one of the first to seventh features of the present invention. It has the following “actions”.
As described in the preceding item [I], the raising / lowering mechanism causes the seedling box support part and the upper support part to approach each other, and the connection mechanism on one side and the other end side in the longitudinal direction of the upper seedling box has a predetermined length. When the holding part holds the upper seedling box when it contracts and the holding part comes in contact with the upper nursery box, it is determined whether or not the holding part is in a state normally along the upper nursery box. May be equipped with a sensor.

As described above, when the holding unit is normally along the upper nursery box and the raising / lowering mechanism brings the seedling box support part and the upper support part closer, the holding part generally approaches the upper support part. Therefore, no matter how the holding part is inclined, the part of the holding part corresponding to the central part in the longitudinal direction of the upper nursery box normally approaches the upper holding part.
Thereby, according to the 8th characteristic of this invention, it is provided with the sensor which detects that the part of the holding | maintenance part corresponding to the center part of the longitudinal direction of an upper seedling raising box approached the upper holding | maintenance part exceeding predetermined distance. Therefore, no matter how the holding part is inclined, the state in which the holding part is generally close to the upper support part (the state in which the holding part normally follows the upper nursery box) is detected and judged with high accuracy. be able to.

(The invention's effect)
According to the eighth aspect of the present invention, as in any one of the first to seventh aspects of the present invention, the “effect of the invention” described in the preceding paragraphs [I] to [VII] is provided. In addition, the following “effects of the invention” are provided.
According to the eighth feature of the present invention, no matter how the holding portion is inclined, the holding portion is generally close to the upper support portion (the holding portion is normally along the upper nursery box). It was possible to detect and judge well, and the performance of the seedling box separation device could be improved.

[IX]
(Constitution)
A ninth feature of the present invention resides in the following configuration in the seedling box separation device of any one of the first to eighth features of the present invention.
A blocking member is provided for preventing the vertical distance between the holding portion and the upper nursery box from becoming smaller than a set value when the holding portion is in a state along the upper nursery box.

(Function)
According to the ninth feature of the present invention, the “action” described in the preceding paragraphs [I] to [VIII] is provided as in any one of the first to eighth features of the present invention. It has the following “actions”.
For example, when empty seedling boxes are stacked, or when seedlings in the upper seedling box are not sufficiently grown in a state where seeded seedling boxes are stacked, as described in [I] above, the lifting mechanism When the seedling box support part and the upper support part are brought close to each other and the holding part is in a state along the upper seedling box, the holding part and the upper seedling box are too close to each other. It is conceivable that the vertical distance from the seedling box is not a set value and the upper nursery box is not properly held by the holding unit.
According to the ninth feature of the present invention, when the holding portion is in a state along the upper nursery box, the blocking member that prevents the vertical distance between the holding portion and the upper nursery box from becoming smaller than the set value is provided. As described above, the state where the holding part and the upper nursery box are too close as described above is avoided, and the vertical distance between the holding part and the upper nursery box becomes a set value, and the upper raising seedling is set by the holding part. The box will be properly held.

On the contrary, for example, when the seedlings in the upper seedling box are sufficiently grown in the state where the seedling boxes that have been sown are stacked, as described in the preceding item [I], the seedling box support portion is raised by the lifting mechanism. When the upper support part and the upper support part are brought close to each other, the seedling of the upper nursery box hits the holding part, the holding part and the upper nursery box become inaccessible to each other, and the holding part and the upper nursery box are too far apart. It is conceivable that the vertical distance between the holding unit and the upper nursery box is not a set value, and the upper nursery box is not properly held by the holding unit.
According to the ninth feature of the present invention, in the case of including a blocking member that prevents the vertical distance between the holding portion and the upper nursery box from becoming smaller than the set value, for example, the blocking member is sufficiently small (those sufficiently thin) The blocking member may be configured to contact the upper nursery box. As a result, when the seedling box support part and the upper support part are brought close to each other by the lifting mechanism in the above-described state, the blocking member is divided into seedlings in the upper nursery box (or separated from the seedlings in the upper nursery box) Before the seedling of the upper nursery box hits the holding part, the blocking member contacts the upper nursery box, and the vertical distance between the holding part and the upper nursery box becomes a set value, The upper nursery box can be appropriately held.

(The invention's effect)
According to the ninth feature of the present invention, as in any one of the first to eighth features of the present invention, the “effect of the invention” described in the preceding items [I] to [VIII] is provided. In addition, the following “effects of the invention” are provided.
According to the ninth feature of the present invention, when the raising / lowering mechanism causes the nursery box support part and the upper support part to approach each other, the vertical distance between the holding part and the upper nursery box becomes a set value. As a result, the upper seedling box is properly separated from the stacked seedling boxes, and the performance of the seedling box separation device can be improved.

[X]
(Constitution)
The tenth feature of the present invention resides in the following configuration in the seedling box separation device of any one of the first to ninth features of the present invention.
The width of the holding portion in the direction intersecting the longitudinal direction of the upper nursery box is set to be narrower than the width in the direction intersecting the longitudinal direction of the upper nursery box.

(Function)
According to the tenth feature of the present invention, as in any one of the first to ninth features of the present invention, the “action” described in the preceding items [I] to [IX] is provided. It has the following “actions”.
If there are many tilted seedling boxes in the stacked seedling boxes, the upper seedling boxes of the stacked seedling boxes as described in [I] and [II] above are tilted. There is a case where the position of the nursery box is slightly moved in the lateral direction (direction intersecting with the longitudinal direction of the upper nursery box) (see the previous section III)) (see, for example, FIG. 26).
In such a state, for example, as shown in FIG. 26, when a plurality of stacked seedling boxes 1 are supported side by side on the seedling box support part, next to the holding part 19 (the longitudinal direction of the upper seedling box 1 It is conceivable that the upper end of the seedling box 1 in the direction A2) intersecting with the state enters a range below the holding unit 19. Thereby, when the raising seedling box support part and the upper support part are brought close to each other by the lifting mechanism, the holding part 19 holds the upper raising seedling box 1 positioned below itself, It is conceivable that the upper nursery box 1 next to it (the direction A2 intersecting the longitudinal direction of the upper nursery box 1) is also held.

  According to the tenth feature of the present invention, for example, as shown in FIG. 26, the width of the holding portion 19 in the direction A2 intersecting with the longitudinal direction of the upper nursery box 1 is crossed with the longitudinal direction of the upper nursery box 1 Since it is set to be narrower than the width of A2, even if the position of the upper nursery box 1 is slightly moved in the lateral direction (direction A2 intersecting the longitudinal direction of the upper nursery box 1) as described above The end of the upper nursery box 1 next to the holding part 19 (direction A2 intersecting the longitudinal direction of the upper nursery box 1) is less likely to enter a range below the holding part 19. The state in which the holding unit 19 holds the upper nursery box 1 next to it (the direction A2 intersecting the longitudinal direction of the upper nursery box 1) is reduced.

(The invention's effect)
According to the tenth feature of the present invention, as in any one of the first to ninth features of the present invention, the “effect of the invention” described in the preceding paragraphs [I] to [IX] is provided. In addition, the following “effects of the invention” are provided.
According to the tenth feature of the present invention, even if the position of the upper nursery box is slightly moved in the lateral direction (direction intersecting the longitudinal direction of the upper nursery box), the holding portion is adjacent (the longitudinal length of the upper nursery box). (The direction that intersects the direction) is less likely to hold the upper nursery box, and the holding part properly holds the upper nursery box located below itself, and the upper nursery box is stacked The seedling box was properly separated from the seedling box and the performance of the seedling box separator was improved.

[1]
FIG. 1 shows the whole nursery box transfer facility, and the nursery box transfer facility includes a seedling box support part 2, a seedling box separation mechanism 3, a seedling box transfer mechanism 4, a greening cart 5, and the like. Has been. The seedling box support section 2 is configured to be driven up and down by a hydraulic type lifting mechanism 6, and the seedling box transfer mechanism 4 is also configured to be driven up and down along a chain type lifting mechanism 7. A support column 8 is provided adjacent to the lifting mechanism 6, and a guide rail 9 is connected between the upper portion of the lifting mechanism 7 and the upper portion of the support column 8, and the seedling box separation mechanism 3 is movable along the guide rail 9. It is configured.

  In a seeding facility (not shown) separate from the seedling box transfer facility, the empty seedling box 1 is supplied with floor soil, irrigated, seeded and covered with soil, and the seedling box 1 after sowing is directly Stacked and germinated in a germination chamber (not shown). As shown in FIGS. 1 and 2, the seedling box 1 that has been stacked and germinated has been placed on the seedling box support 2, and the longitudinal direction A <b> 1 (see FIG. 9) of the seedling box 1 is the guide rail 9. Eight sets of seedling boxes 1 stacked are placed on the seedling box support part 2 so as to cross the direction.

  As shown in FIGS. 1 and 2, the greening cart 5 includes a shelf portion 5 a and wheels 5 b arranged at a predetermined vertical interval (interval sufficiently larger than the vertical width of the seedling box 1). The four seedling boxes 1 can be placed on one shelf 5a.

[2]
Next, the seedling box separation mechanism 3 will be described.
As shown in FIGS. 3, 4, and 5, an axle 12 is rotatably supported on a frame 11 configured in a frame shape in plan view, and driving wheels 13 are fixed to both ends of the axle 12, so that the frame 11 is free. Two rotatable wheels 14 that are rotatable are provided, and the driving wheel 13 and the driven wheel 14 are placed on the guide rail 9. A motor 15 and a gear reduction mechanism 16 are fixed to the center of the frame 11, and a transmission chain 17 is wound around the sprocket 16 a of the gear reduction mechanism 16 and the sprocket 12 a fixed to the axle 12. Thereby, the drive wheel 13 is driven forward and reversely by the motor 15, and the seedling box separation mechanism 3 can move forward and backward along the guide rail 9.

  As shown in FIGS. 3, 4, and 5, the flat plate-like upper support portion 18 is fixed over substantially the entire lower portion of the frame 11, and four flat plate-like holding portions 19 are provided below the upper support portion 18. The four holding parts 19 are arranged so that the longitudinal direction of the holding part 19 is the vertical direction of the paper surface of FIG. 5 (so as to be the same direction as the longitudinal direction A1 of the seedling box 1). . As shown in FIGS. 3, 4, 5, and 6, three boss portions 20 are provided on the upper support portion 18 with respect to one holding portion 19, and round bar-shaped connection members 21 are provided on the boss portions 20 on both sides. The rod-shaped detection member 22 is inserted into the central boss 20 so as to be slidable up and down.

  As shown in FIGS. 6 and 7, the conical portions 21a and 22a are fixed to the lower ends of the connection member 21 and the detection member 22, and the ring-shaped flange portions 21b and 22b are fixed to the lower ends of the conical portions 21a and 22a. The nut 21c is attached to the upper end of the connecting member 21. A planar notch 22c is formed at the upper end of the detection member 22, a stopper 22d is fixed to the upper end of the detection member 22, and a convex portion 20a fixed to the boss 20 is formed in the notch 22c of the detection member 22. The upper support 18 is provided with a proximity sensor 23 that is inserted and detects the upper end of the detection member 22.

  Accordingly, as shown in FIGS. 6 and 14, the connection member 21 is moved upward with respect to the boss portion 20 from a predetermined length (a state where the nut 21 c of the connection member 21 rides on the boss portion 20 as shown in FIG. 6). It is slidable (shrinkable), and the connecting member 21 cannot slide downward (extend) with respect to the boss 20 from a predetermined length (a state where the nut 21c of the connecting member 21 rides on the boss 20 as shown in FIG. 6). Impossible). Within the range of the notch 22c and the stopper 22d of the detection member 22, the detection member 22 is slidable up and down.

  As shown in FIGS. 6 and 7, three cylindrical connection portions 24 are fixed to the holding portion 19, and a circular opening 24 a is provided in the ceiling portion of the connection portion 24, and the opening 24 a of the connection portion 24 is provided. The conical portions 21 a and 22 a and the flange portions 21 b and 22 b of the connection member 21 and the detection member 22 are inserted into the connection portion 24. In this case, the inner diameter of the opening 24a of the connecting portion 24 is substantially the same as the outer diameter of the lower ends of the conical portions 21a and 22a of the connecting member 21 and the detecting member 22 (or the conical portions 21a and 22a of the connecting member 21 and the detecting member 22). The outer diameters of the flange portions 21b and 22b of the connection member 21 and the detection member 22 are set to be larger than the inner diameter of the opening 24a of the connection portion 24. .

  As shown in FIGS. 6 and 7, the connection member 21 and the connection portion 24 span the portion of the holding portion 19 corresponding to one and the other end side portions in the longitudinal direction A1 of the seedling box 1 and the upper support portion 18. Is located. The detection member 22 and the connection part 24 are located in the part of the holding part 19 corresponding to the center part of the direction A2 (refer FIG. 9) which cross | intersects the longitudinal direction A1 of the seedling box 1 and the longitudinal direction A1. In a plan view of the holding unit 19, a line segment A3 connecting the connection member 21 and the detection member 22 intersects the longitudinal direction A1 of the seedling box 1 (in the plan view of the holding unit 19, the connection member 21 and the detection member 22. A line segment A3 is connected to the diagonal line of the nursery box 1).

  As shown in FIGS. 6, 7, and 8, a guide pin 26 is fixed to a portion of the holding portion 19 corresponding to one side and the other end side portion in the longitudinal direction A <b> 1 of the nursery box 1, and the holding member in the form of an angle member 27 is slidably supported on the guide pin 26, and an actuator 28 that slides the holding member 27 is fixed to the holding portion 19. As shown in FIGS. 6, 7, 8, and 12, the hard sponge member 27 a and the support pin 27 b are fixed to the inner portion of the holding member 27, and the separation mechanism 29 is fixed to the outer portion of the holding member 27. 11, the separation mechanism 29 is configured to repeatedly project the operation portion 29a obliquely downward at a high speed. As shown in FIGS. 6, 7, and 8, the guide member 25 that is inclined so as to spread obliquely outward is fixed to four corners of the holding portion 19, and the guide member 25 is outside the holding member 27. positioned. The four holding portions 19 configured as described above are arranged below the upper support portion 18 as shown in FIGS.

[3]
Next, the overall operation flow of the nursery box transfer facility will be described.
The state shown in FIG. 1 and FIG. 2 is a state in which 8 sets of seedling boxes 1 stacked are placed on the seedling box support part 2, and the seedling box separation mechanism 3 is located above the 4 sets of stacked seedling boxes 1. Is in a state of being located. From this state, the seedling box support part 2 (the stacked seedling box 1 (upper seedling box 1)) is driven up by the lifting mechanism 6, and the upper seedling box 1 of the four stacked seedling boxes 1 is the seedling box. The seedling box support part 2 (stacked seedling boxes 1) is driven downward by the lifting mechanism 6 and is separated from the stacked seedling boxes 1 by being held by the separation mechanism 3.

  The seedling box separation mechanism 3 holding the seedling box 1 moves along the guide rail 9 above the nursery box transfer mechanism 4 at the highest position, and the seedling box separation mechanism 3 releases the holding of the seedling box 1 The seedling box 1 falls from the seedling box separation mechanism 3 to the seedling box transfer mechanism 4. The seedling box transfer mechanism 4 that supports the seedling box 1 is driven downward and stops at the position of the bottom shelf 5 a of the greening cart 5, and the seedling box 1 moves from the seedling box transfer mechanism 4 to the top of the green cart 5. It is transferred to the lower shelf 5a.

  While the seedling box 1 is being transferred from the nursery box transfer mechanism 4 to the bottom shelf 5a of the greening cart 5, the seedling box separation mechanism 3 is located above the seedling box 1 stacked along the guide rail 9. The seedling box support part 2 (stacked seedling box 1 (upper seedling box 1)) is moved up and down by the lifting mechanism 6, and the upper seedling box 1 of the four pairs of seedling boxes 1 is raised. The seedling box separation mechanism 3 is held by the box separation mechanism 3 and moves above the seedling box transfer mechanism 4 along the guide rail 9.

  When the seedling box 1 is transferred from the seedling box transfer mechanism 4 to the lowest shelf 5a of the greening cart 5, the seedling box transfer mechanism 4 is driven to the highest position, and the seedling box separation mechanism 3 Releases the holding of the seedling box 1, and the seedling box 1 falls from the seedling box separation mechanism 3 to the seedling box transfer mechanism 4. The seedling box transfer mechanism 4 that supports the seedling box 1 is driven downward, stops at the position of the shelf 5a one level above the bottom of the greening cart 5, and the seedling box 1 is greened from the seedling box transfer mechanism 4 It is transferred to the aforementioned shelf 5a of the carriage 5.

  As described above, the raising / lowering drive by the raising / lowering mechanism 6 of the raising seedling box support part 2 (stacked raising seedling box 1 (upper raising seedling box 1)), the raising of the raising seedling box 1 at the uppermost position of the stacked raising seedling box 1 The seedling box separation mechanism 3 is reciprocated between the upper part of the replacement mechanism 4 and the seedling box 1 is moved by the seedling box transfer mechanism 4 from the lowest shelf part 5a of the greening cart 5 to the upper stage in order. It is transferred to the shelf 5a.

[4]
Next, the operation flow of the seedling box separation mechanism 3 will be described.
The state shown in FIGS. 3, 4, and 5 is that eight sets of stacked seedling boxes 1 are placed on the seedling box support unit 2 so that the longitudinal direction A <b> 1 of the seedling box 1 is the vertical direction on the paper surface of FIG. 5. In the state, the seedling box separation mechanism 3 is in a state where it is located above the four seedling boxes 1 stacked, and the upper seedling box 1 is located slightly away from the holding part 19, The seedling box support section 2 (the stacked seedling boxes 1 (upper seedling box 1)) is driven up and down by the lifting mechanism 6.

  In the state shown in FIGS. 3, 4, and 5, as shown in FIG. 6, the holding portion 19 tends to descend due to its own weight, and the flange portion 21 b of the connecting member 21 contacts the inner surface of the ceiling portion of the connecting portion 24. In a state where the nut 21 c of 21 reaches the boss portion 20, the holding portion 19 cannot be lowered with respect to the upper support portion 18. As a result, when the nut 21 c of the connecting member 21 reaches the boss portion 20, the state in which the holding portion 19 is inclined in the longitudinal direction A <b> 1 of the seedling box 1 is restricted. Since the flange portion 21b of the connecting member 21 is in contact with the inner surface of the ceiling portion of the connecting portion 24 and the opening 24a of the connecting portion 24 reaches the lower end of the conical portion 21a of the connecting member 21, the holding portion The state where 19 inclines in the direction A2 intersecting the longitudinal direction A1 of the seedling box 1 is regulated.

  As shown in FIG. 1 from the state shown in FIGS. 3, 4, and 5, the seedling box support part 2 (stacked seedling box 1 (upper seedling box 1)) is driven up by the lifting mechanism 6. For example, when the upper nursery box 1 is tilted as shown in FIGS. 13 and 14, focusing on one holding part 19, the upper nursery box 1 is guided to the holding part 19 by the guide member 25. Yes, the upper nursery box 1 contacts the holding part 19, and the holding part 19 is pushed up by the upper nursery box 1. In this case, as shown in FIG. 14, the inner surface of the ceiling portion of the connection portion 24 is separated upward from the flange portions 21 b and 22 b of the connection member 21 and the detection member 22, and the holding portion 19 is connected to the connection member 21 and the detection member 22. The connection member 21 and the detection member 22 are pushed up by the holding portion 19 in contact with the flange portions 21b and 22b.

  In this case, as shown in FIG. 14, when the inner surface of the ceiling portion of the connection portion 24 is separated upward from the flange portions 21 b and 22 b of the connection member 21 and the detection member 22, the holding portion 19 is in the longitudinal direction A <b> 1 of the seedling box 1. And it inclines in the direction A2 which cross | intersects the longitudinal direction A1 (refer FIG.3,4,5), and the holding | maintenance part 19 contacts so that the upper nursery box 1 may be followed. Furthermore, the holding part 19 crosses the longitudinal direction A1 and the longitudinal direction A1 of the seedling box 1 by the point that the opening 24a of the connection part 24 is sufficiently larger than the connection member 21 and the detection member 22 and the guide action of the guide member 25. It moves to the horizontal direction of the direction A2 to perform, and the holding | maintenance part 19 contacts so that the upper seedling box 1 may be met.

  As shown in FIG. 14, when the detection members 22 are pushed up by the four holding portions 19 and the upper ends of all the detection members 22 are detected by the proximity sensor 23, the lifting mechanism 6 and the seedling box support portion 2 (stacked) The seedling box 1 (upper seedling box 1) is stopped. 10A and 10B, the actuator 28 contracts and the holding member 27 is pressed against the upper nursery box 1 (the sponge member 27a of the holding member 27 is pressed against the upper nursery box 1). Thus, the support pin 27b of the holding member 27 enters the lower side of the edge of the upper nursery box 1), and one end and the other end of the upper nursery box 1 in the longitudinal direction A1 are held by the holding member 27. .

  As shown in FIG. 15 from the state shown in FIG. 14, when the seedling box support part 2 (stacked seedling boxes 1) is driven downward by the lifting mechanism 6, the ceiling part of the connection part 24 is connected to the connection member 21 and the detection member. The connection member 21 and the detection member 22 are slid downwardly in contact with the flange portions 21b and 22b. In this case, for example, as shown in FIG. 15, when the holding part 19 and the upper seedling box 1 are inclined, the nut 21c of the connecting member 21 on the right side of the paper first comes into contact with the boss part 20 to connect on the right side of the paper. The portion 24 cannot be lowered, and the driving force of the lowering drive by the elevating mechanism 6 is connected to the right side of the drawing surface via the connecting member 21 and the holding portion 19 (holding member 27). The upper right seedling box 1 is separated from the stacked seedling box 1 at the right end of the upper seedling box 1.

  In the state shown in FIG. 15, when the seedling box support part 2 (stacked seedling boxes 1) is driven downward by the elevating mechanism 6, the nut 21 c of the connection member 21 on the left side of the paper then contacts the boss part 20. Then, the connecting portion 24 on the left side of the paper surface cannot be lowered, and the driving force of the lowering drive by the lifting mechanism 6 is applied to the upper seedling box 1 via the connecting member 21 and the holding portion 19 (holding member 27) on the left side of the paper surface. It is in a state where it mainly hangs on the left end of the paper surface, and the left end of the upper nursery box 1 is separated from the stacked nursery box 1. During this time, the operation unit 29a of the separation mechanism 29 is repeatedly protruded obliquely downward at a high speed, and the seedling box 1 below the upper nursery box 1 held by the holding unit 19 becomes the operation unit 29a of the separation mechanism 29. The upper nursery box 1 and the stacked seedling boxes 1 are forcibly separated from each other by being pushed downward.

  When the seedling box support section 2 (stacked seedling boxes 1) is driven downward by the elevating mechanism 6 and the set time elapses, as shown in FIG. 16, the upper seedling box 1 is separated from the stacked seedling boxes 1 Then, the raising / lowering mechanism 6 and the seedling box support part 2 (stacked seedling boxes 1) stop. In this case, even if the holding part 19 is moved in the lateral direction of the seedling box 1 in the longitudinal direction A1 and the direction A2 intersecting the longitudinal direction A1 (see FIGS. 3, 4 and 5), the connection member 21 and the detection member 22 When the opening 24a of the connecting portion 24 is guided by the conical portions 21a and 22a, the holding portion 19 and the upper seedling box 1 are returned to the original positions shown in FIG.

  When the upper seedling box 1 is held by the seedling box separation mechanism 3 as described above, the seedling box separation mechanism 3 holding the seedling box 1 is moved along the guide rails 9 as described in [3] above. The nursery box separation mechanism 3 releases the holding of the nursery box 1 and the nursery box 1 is transferred from the seedling box separation mechanism 3 to the nursery box transfer mechanism 4. Fall into. Next, the seedling box separation mechanism 3 moves above the seedling boxes 1 stacked along the guide rails 9, and the above operation is repeated to hold the seedling box 1 in the seedling box separation mechanism 3.

[First Alternative Embodiment of the Invention]
In one holding part 19 of the above-mentioned [Best Mode for Carrying Out the Invention], as shown in FIG. 17, the detection member 22 and the connecting part 24 (see FIGS. 6 and 7) are configured to be eliminated. May be. When comprised in this way, it comprises so that the proximity sensor 23 (refer FIG. 6) may be provided with respect to the upper end of one connection member 21 or the upper end of both the connection members 21. FIG.

[Second Embodiment of the Invention]
As shown in FIG. 18, four connecting members 21 and one detecting member 22 may be arranged in one holding portion 19 of the above-mentioned [Best Mode for Carrying Out the Invention]. .

[Third Another Embodiment of the Invention]
In one holding part 19 of the above-mentioned [second alternative embodiment of the invention], as shown in FIGS. 19 (a) and 19 (b), the connecting part 24 corresponding to the detection member 22 is eliminated, and the detection member 22 is eliminated. May be configured in a rod shape (not provided with the conical portion 22a and the flange portion 22b shown in FIG. 6), and the detection member 22 may be biased downward from the upper support portion 18 by the spring 30.

[Fourth Embodiment of the Invention]
As shown in FIG. 20, the connection member 21 and the detection member 22 may be arranged upside down in the one holding portion 19 in the above-mentioned [Best Mode for Carrying Out the Invention]. In this case, the connection member 21 and the detection member 22 are inserted into the opening of the connection portion 24, and the conical portions 21 a and 22 a of the connection member 21 and the detection member 22 are inserted into the opening of the upper support portion 18 to hold the proximity sensor 23. Part 19 is provided.

  The inner diameter of the opening of the connection portion 24 is set to be substantially the same as the outer diameter of the connection member 21 and the detection member 22, and the inner diameter of the opening of the upper support portion 18 is the same as that of the conical portions 21 a and 22 a of the connection member 21 and the detection member 22. It is set to be substantially the same as the outer diameter of the upper end (or slightly larger than the outer diameter of the upper ends of the conical portions 21a and 22a of the connection member 21 and the detection member 22), and the flange portions 21b of the connection member 21 and the detection member 22; The outer diameter of 22 b is set to be larger than the inner diameter of the opening of the upper support portion 18.

[Fifth Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention] and [First Alternative Embodiment of Invention] to [Fourth Alternative Embodiment of the Invention], as shown in FIG. A spring 31 may be provided between the holding portion 19 and the holding portion 19 to be biased downward. In this case, in the above-mentioned [fourth alternative embodiment of the invention], a spring 31 may be provided between the upper support portion 18 and the connection portion 24 so as to bias the holding portion 19 downward. Good.

[Sixth Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention] and [First Alternative Embodiment] to [Fifth Alternative Embodiment], the guide pin 26 shown in FIGS. 22, 23, and 24, the guide pin 26 (corresponding to the blocking member) is configured to be slightly longer than the width of the holding portion 19 in the longitudinal direction A <b> 1 of the seedling box 1, and the two guide pins 26 is prepared, and the guide pin 26 is connected to the lower surface of the holding portion 19 with a screw via an attachment portion 26 a fixed to the guide pin 26 so that the holding member 27 is slidably supported by the guide pin 26. You may comprise.

Accordingly, as shown in FIG. 26, when the seedling box support 2 (stacked seedling boxes 1 (upper seedling box 1)) is driven up by the lifting mechanism 6, the upper seedling box 1 is guided by the guide member 25. Is guided by the holding portion 19, one end and the other end portion in the longitudinal direction A <b> 1 of the upper nursery box 1 come into contact with the guide pin 26, and the holding portion 19 is pushed up by the upper nursery box 1. Accordingly, the vertical distance between the holding unit 19 and the upper nursery box 1 is maintained at a set value (prevented from becoming smaller than the set value), and the holding unit 19 (guide pin 26) is moved to the upper nursery box 1 Touch along.
In this case, by configuring the guide pin 26 with a round bar, when the one and the other ends in the longitudinal direction A1 of the upper nursery box 1 come into contact with the guide pin 26 as described above, the upper nursery box 1 The guide pins 26 are divided into the seedlings of the upper seedling box 1 without damaging the seedlings, and one end and the other end of the upper seedling box 1 in the longitudinal direction A1 are in contact with the guide pins 26.

[Seventh Embodiment of the Invention]
In the above-mentioned [sixth embodiment of the invention], as shown in FIG. 25, a plurality of rod members 26b (corresponding to blocking members) are constructed over the lower surfaces of the two guide pins 26. May be. Thereby, when the raising seedling box support part 2 (the stacked raising seedling boxes 1 (upper raising seedling box 1)) is driven up by the lifting mechanism 6, the upper raising seedling box 1 is guided to the holding part 19 by the guide member 25. Then, one end and the other end in the direction A2 intersecting the longitudinal direction A1 of the upper nursery box 1 are in contact with the rod member 26b, and the holding part 19 is pushed up by the upper nursery box 1. Accordingly, the vertical distance between the holding unit 19 and the upper nursery box 1 is maintained at a set value (prevented from becoming smaller than the set value), and the holding unit 19 (rod member 26b) is moved to the upper nursery box 1 Touch along.
In this case, by configuring the guide pin 26 and the rod member 26b with round bars, as described above, one end and the other end of the direction A2 intersecting the longitudinal direction A1 of the upper nursery box 1 are in contact with the rod member 26b. When hitting, the guide pin 26 and the rod member 26b are divided into the seedlings of the upper nursery box 1 without damaging the seedlings of the upper nursery box 1, and in the direction A2 intersecting the longitudinal direction A1 of the upper nursery box 1 One end and the other end are in contact with the rod member 26b.

[Eighth Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention] and [First Alternative Embodiment] to [Seventh Alternative Embodiment], the guide member 25 shown in FIGS. Then, as shown in FIG. 26, the width of the holding portion 19 (holding member 27) in the direction A2 intersecting the longitudinal direction A1 of the upper nursery box 1 is the direction intersecting the longitudinal direction A1 of the upper nursery box 1 You may comprise so that it may set to the thing narrower than the width | variety of A2.
In this case, the holding portion 19 corresponding to one and the other end side portion in the longitudinal direction A1 of the seedling box 1 is not provided with one horizontally long holding member 27, but two pieces are placed at a distance. When comprised so that the holding member 27 may be provided, what is necessary is just to comprise so that the distance of the two holding members 27 may become narrower than the width | variety of the direction A2 which cross | intersects the longitudinal direction A1 of the upper nursery box 1.

[Ninth Embodiment of the Invention]
In the above-mentioned [sixth embodiment of the invention] and [seventh embodiment of the invention], the guide pin 26 and the rod member 26b are abolished and contacted to the four corners of the upper seedling box 1. The holding part 19 may be configured to include a contact member (not shown). Thereby, when the raising seedling box support part 2 (the stacked raising seedling boxes 1 (upper raising seedling box 1)) is driven up by the lifting mechanism 6, the upper raising seedling box 1 is guided to the holding part 19 by the guide member 25. Then, the four corners of the upper nursery box 1 are in contact with the contact member, and the holding part 19 is pushed up by the upper nursery box 1. Accordingly, the vertical distance between the holding unit 19 and the upper nursery box 1 is maintained at a set value (prevented from becoming smaller than the set value), and the holding unit 19 is in contact with the upper nursery box 1. To do.
In this case, since the four corners of the upper nursery box 1 contact the contact member, the contact member does not hit the seedling of the upper nursery box 1 and the seedling of the upper nursery box 1 is damaged. There is nothing.

[Tenth Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention] and [First Alternative Embodiment of the Invention] to [Ninth Alternative Embodiment of the Invention], the position of the seedling box support portion 2 is fixed, and the seedling is raised The box separation mechanism 3 may be configured to be driven up and down. Instead of providing the separation mechanism 29 in the seedling box separation mechanism 3, the separation mechanism 29 may be provided in the support 8 shown in FIG. 1 or another fixing member.
In the above-mentioned [Best Mode for Carrying Out the Invention] and [First Alternative Embodiment] to [Seventh Alternative Embodiment] [Ninth Alternative Embodiment], FIG. In addition to providing the guide members 25 at the four corners of the holding portion 19 shown in FIGS. 7 and 8, four laterally outward guide members 25 (relative to the guide members 25 shown in FIGS. 6, 7 and 8). You may comprise so that the guide member 25) from which 90 degrees differs may be provided in the four corners of the holding | maintenance part 19. FIG.
In the present invention, a nursery box transfer facility for stacked empty nursery boxes 1 and a stacked nursery box 1 (such as an empty nursery box 1 or a seeded nursery box 1) are placed on a carriage (Minitrokko). Also, it can be applied to a nursery box transfer facility of a type in which a cart (Minitrokko) is placed on the nursery box support section 2.

Whole side view of nursery box transfer facility The perspective view which shows the state which transfers a seedling box from a seedling box support part to a planting cart by a seedling box separation mechanism and a seedling box transfer mechanism Side view near the seedling box separation mechanism Front view near the seedling box separation mechanism Top view near the seedling box separation mechanism Longitudinal front view near the holding part of the seedling box separation mechanism Plan view near the holding part of the seedling box separation mechanism Side view near the holding part of the seedling box separation mechanism Perspective view of nursery box In the holding part of the seedling box separation mechanism, a longitudinal front view showing a state in which one end and the other end part in the longitudinal direction of the upper seedling box are held by the holding member In the holding part of the seedling box separation mechanism, a longitudinal front view showing a state in which the seedling box in the lower stage of the upper seedling box held by the holding part is forcibly separated by the separation mechanism In the holding part of the seedling box separation mechanism, an exploded perspective view of the holding member A longitudinal front view showing a state in which the seedling box support part (the stacked seedling boxes (upper seedling box)) starts to be driven up with respect to the holding part of the seedling box separation mechanism The longitudinal front view which shows the state which the holding part of the seedling box separation mechanism contacted along the upper seedling box from the state shown in FIG. 14 is a longitudinal front view showing a state in which the seedling box support section (the stacked seedling boxes (upper seedling boxes)) starts to be driven downward from the state shown in FIG. 14 with respect to the holding section of the seedling box separation mechanism. A vertical front view showing a state where the upper nursery box is separated from the stacked nursery box by the holding unit of the nursery box separation mechanism from the state shown in FIG. The top view of the holding | maintenance part of the seedling box isolation | separation mechanism in 1st another form of implementation of invention The top view of the holding | maintenance part of the seedling box isolation | separation mechanism in 2nd another form of implementation of invention The top view and longitudinal front view of the holding | maintenance part of the seedling box isolation | separation mechanism in 3rd another form of implementation of invention The longitudinal front view of the holding part of the seedling box separation mechanism in the fourth alternative embodiment of the invention The longitudinal front view of the holding part of the seedling box separation mechanism in the fifth alternative embodiment of the invention Vertical front view of the vicinity of the holding part of the seedling box separation mechanism according to the sixth embodiment of the invention The top view of the holding | maintenance part of the seedling box separation mechanism in 6th another form of implementation of invention Vertical front view of the vicinity of the guide pin of the seedling box separation mechanism in the sixth alternative embodiment of the invention The top view of the guide pin and rod member of the seedling box isolation | separation mechanism in 7th another form of implementation of invention Side view of the vicinity of the seedling box separation mechanism according to the eighth embodiment of the invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nursery box 2 Nursery box support part 6 Lifting mechanism 18 Upper support part 19 Holding part 21 Connection mechanism 23 Sensor 24 Interchange part, Control part 26,26b Blocking member 27 Holding member 29 Separation mechanism A1 Longitudinal direction of upper seedling box A2 Upper part A direction that intersects the longitudinal direction of the nursery box of A3 Lines that connect multiple connection mechanisms

Claims (10)

A seedling box support part that supports the stacked seedling boxes, an upper support part that is located above the stacked seedling boxes, and a lifting mechanism that drives the raising and lowering the seedling box support part or the upper support part,
A holding part capable of holding and releasing the holding of the seedling box on the upper part of the stacked seedling boxes,
A connection mechanism that can contract from a predetermined length and cannot extend from the predetermined length is connected to a portion of the holding portion corresponding to one end side portion in the longitudinal direction of the upper nursery box and the upper support portion. ,
A connection mechanism that can contract from a predetermined length and cannot extend from the predetermined length is connected to a portion of the holding portion corresponding to the other end side portion in the longitudinal direction of the upper nursery box and the upper support portion. And
By bringing the seedling box support part and the upper support part closer by the lifting mechanism, the holding part is in a state along the upper seedling box, the holding part holds the upper seedling box, and the holding part holds the upper seedling box. In a state where the seedling box is held, the raising and lowering mechanism separates the seedling box support part and the upper support part, so that the upper nursery box is separated from the stacked seedling boxes by the holding part. Nursery box separation device.   The seedling box separation device according to claim 1, further comprising an interchangeable part that allows the holding part to be inclined with respect to the upper support part in a direction intersecting with a longitudinal direction of the upper seedling box.   The seedling box separation device according to claim 1 or 2, further comprising an interchangeable portion that allows the holding portion to move laterally with respect to the upper support portion.   The connection mechanism according to any one of claims 1 to 3, wherein the connection mechanism is arranged such that a line segment connecting the plurality of connection mechanisms intersects the longitudinal direction of the upper nursery box in a plan view of the holding portion. The seedling box separation device described in 1.   5. The holding portion is configured by including a holding member capable of holding and releasing the end of one and the other end in the longitudinal direction of the upper nursery box, and constituting the holding portion. Seedling box separation equipment.   By separating the nursery box support part and the upper support part by the lifting mechanism, when the upper nursery box is separated from the stacked nursery box by the holding part, the upper nursery box and the nursery box stacked The seedling box separation device according to any one of claims 1 to 5, further comprising a separation mechanism for forcibly separating the seedlings.   A regulation unit that regulates a state in which the holding unit is inclined in a direction intersecting with a longitudinal direction of the upper nursery box in a state where the upper nursery box is separated from the stacked nursery boxes by the holding unit. The seedling box separation device according to any one of Items 1 to 6.   The holding part corresponding to the center part in the longitudinal direction of the upper nursery box is provided with a sensor that detects that the upper holding part has been approached beyond a predetermined distance, and the holding is performed based on the detection of the sensor. The seedling box separation device according to any one of claims 1 to 7, wherein the apparatus is configured to determine that the portion has come into contact with the upper seedling box.   A blocking member that prevents the vertical distance between the holding part and the upper nursery box from becoming smaller than a set value when the holding part is in a state along the upper nursery box is provided. The seedling box separation device according to any one of 8.   The width | variety of the holding | maintenance part of the direction which cross | intersects the longitudinal direction of the said upper nursery box is set to the thing narrower than the width | variety of the direction which cross | intersects the longitudinal direction of the said upper nursery box. The seedling box separation device according to any one of the above.

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