JPH05301634A - Raising seedling box stacking device - Google Patents

Abstract

PURPOSE:To improve stability in the right and left direction at push-up movement of raising seedling boxes when the width of an elevating table is narrower than the width of the raising seedling box at a lift mechanism. CONSTITUTION:A raising seedling box stacking device in the form that boxes are stacked from below by push-up by a lift mechanism, a conveying device at the lift mechanism part is constituted by a large number of roller units 6 consisting of three rollers arranged side by side in the right and left direction. As an elevating table 18 of the lift mechanism is so constituted that a connection part 18a between the three rollers is integrally formed with an elevating part 18b located between the adjacent roller units 6 on a single plane level, the lateral and longitudinal lengths of the elevating table 18 is set at a value equal to the lateral and longitudinal lengths of the raising seedling box 1 so as to obtain the stable mounted state for the raising seedling box.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、播種後や洗浄後の育苗
箱を自動的に所定段数積重ねる装置の改良技術に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved technique for automatically stacking seedling raising boxes after seeding or washing in a predetermined number of stages.

【０００２】[0002]

【従来の技術】従来、この種の育苗箱積重ね装置として
は、特開昭６１−２２７７１４号公報で示されたものが
知られている。これは、搬送されたきた育苗箱をエアー
シリンダで押上げることで下方から順次積上げていく手
段であり、押上げられた育苗箱をその押上げ位置におい
て保持する支持機構がチェーンコンベヤの上方位置に配
設してある。2. Description of the Related Art Heretofore, as a seedling raising box stacking device of this type, a device shown in Japanese Patent Application Laid-Open No. 61-227714 has been known. This is a means of sequentially stacking the transported nursery boxes from below by pushing them up with an air cylinder, and the support mechanism that holds the pushed nursery boxes in the pushed position is located above the chain conveyor. It is provided.

【０００３】[0003]

【発明が解決しようとする課題】積上げ式の育苗箱積重
ね装置では、搬送装置上にある育苗箱をリフト機構によ
って押上げ移動させるのであるが、前記従来技術では左
右一対のチェーンコンベヤによって育苗箱を搬送する構
造上、リフト機構での昇降台の左右幅が育苗箱の左右幅
よりも相当狭いものになり、押上げ移動時における左右
方向の安定性には改善の余地があるように見受けられ
る。本発明の目的は、リフト機構において安定良く育苗
箱の押上げ移動が行われるように改善する点にある。In the stacking type nursery box stacking apparatus, the nursery boxes on the carrier are pushed up and moved by the lift mechanism. Due to the transporting structure, the horizontal width of the lifting platform in the lift mechanism is considerably narrower than the horizontal width of the nursery box, and it seems that there is room for improvement in the lateral stability during the push-up movement. An object of the present invention is to improve the lifting mechanism so that the raising and moving of the nursery box can be performed stably.

【０００４】[0004]

【課題を解決するための手段】上記目的の達成のために
本発明は、複数のコロを軸方向に並設して成るローラユ
ニットを搬送方向一定間隔毎に配置して構成される搬送
装置により、所定位置に搬送されてきた重積み自在な育
苗箱を一定量上方に押上げるリフト機構と、このリフト
機構によって押上げられた育苗箱をその押上げられた位
置で保持する支持機構とを備え、支持機構で保持される
育苗箱をリフト機構の育苗箱押上げ作動によって下層の
育苗箱から順次積上げていく積上げ作動を繰り返すとと
もに、支持機構で保持される育苗箱が所定段数に達する
とリフト機構の作動が停止する状態に、支持機構に保持
された育苗箱の段数を検出する段数検出センサと、支持
機構とリフト機構とを連係させる制御手段を設け、更
に、リフト機構における育苗箱押上げ用の昇降台を、並
設される複数のコロ間に位置する連結部と、搬送方向で
隣合うローラユニット間に位置する昇降部とを単一の平
面レベルとなる状態で一体形成して構成してあることを
特徴とする。In order to achieve the above-mentioned object, the present invention provides a roller unit constituted by arranging a plurality of rollers arranged in the axial direction at regular intervals in the roller direction. A lift mechanism that pushes up a stackable seedling raising box that has been transported to a predetermined position upward by a certain amount and a support mechanism that holds the seedling raising box pushed up by this lift mechanism at the pushed up position , The lifting mechanism that lifts the nursery boxes held by the support mechanism sequentially from the lower nursery box by the lifting mechanism pushing up the nursery box is repeated, and the lift mechanism is lifted when the number of the nursery boxes held by the support mechanism reaches a predetermined number. When the operation of the support mechanism is stopped, a stage number detection sensor that detects the number of stages of the nursery box held by the support mechanism and a control means that links the support mechanism and the lift mechanism are provided. The raising and lowering platform for pushing up the seedling raising box with the connecting portion located between the plurality of rollers arranged in parallel and the raising and lowering portion located between the roller units adjacent to each other in the transport direction are in a single plane level. It is characterized in that it is formed integrally.

【０００５】[0005]

【作用】搬送装置を複数のローラユニットで構成するこ
とにより、隣合うローラユニット間では昇降台の昇降部
における搬送方向に対する左右方向幅が、該ローラユニ
ットの存在に起因して規制されることが解消されるよう
になる。これにより、育苗箱の左右幅と同等、あるいは
それ以上の幅を設定するといった具合に、昇降台の左右
幅を十分なものに設定できる。そして、各ローラユニッ
トは複数のコロを支持軸に左右方向に並設して構成され
ているから、これらコロ間に昇降台の連結部を配置する
ことができ、もって、前記昇降部と連結部との一体形成
によって昇降台が搬送方向に連続し、かつ、育苗箱の搬
送方向長さに対する十分な台長さを取ることもできるよ
うになる。つまり、昇降台の前後及び左右のいずれの方
向にも育苗箱を安定して載置できるに十分な長さを確保
することができるようになった。By configuring the conveying device with a plurality of roller units, the width in the left-right direction with respect to the conveying direction in the elevating part of the elevating table can be restricted between the adjacent roller units due to the existence of the roller units. It will be resolved. As a result, the left and right width of the lifting table can be set to a sufficient width such that the width is equal to or larger than the left and right width of the nursery box. Since each roller unit is constructed by arranging a plurality of rollers in parallel in the left-right direction on the support shaft, the connecting portion of the lifting table can be arranged between these rollers, and thus the lifting portion and the connecting portion can be arranged. It becomes possible to make the elevating table continuous in the carrying direction and to have a sufficient stand length with respect to the carrying direction length of the seedling raising box by integrally forming with. That is, it has become possible to secure a sufficient length for stably mounting the nursery box both in the front and rear directions and the left and right directions of the lifting platform.

【０００６】[0006]

【発明の効果】その結果、複数のコロで成るローラ型コ
ンベヤで搬送装置を構成する構造工夫によって、リフト
機構における育苗箱の安定した押上げ挙動が現出でき、
良好な積重ね状態の現出に寄与できる育苗箱積重ね装置
を提供できた。As a result, a stable pushing-up behavior of the nursery box in the lift mechanism can be realized by the structural design of the conveying device constituted by the roller type conveyor composed of a plurality of rollers.
A seedling raising box stacking device capable of contributing to the appearance of a good stacking state can be provided.

【０００７】[0007]

【実施例】以下に、本発明の実施例を図面に基づいて説
明する。図１に育苗プラント等で播種処理された後の育
苗箱１を所定段数（３０枚）積層する育苗箱積重ね装置
の全体図が示され、２は育苗箱１の搬送コンベヤ、３は
育苗箱１を押上げて下方から順次積上げる積層装置、４
は積層された育苗箱群１Ａを載せて発芽室等の後工程に
運搬するための台車である。図４、図５に示すように、
搬送コンベヤ２は、育苗箱搬送方向上手側から第１〜第
４搬送部２ａ，２ｂ，２ｃ，２ｄの各搬送部から成り、
夫々専用の電動モータ５及び多数の回転ローラ６から構
成されて独立駆動できるようにしてある。搬送コンベヤ
２は、第１〜第３搬送部２ａ，２ｂ，２ｃが同じ駆動構
造を採り、その構造を第２搬送部２ｂのもので説明する
と、図８に示すように、３個のコロ６ａを支持軸７に取
付けて成るローラユニット６どうしをチェン連動機構８
で連動させるとともに、そのうちの１個の支持軸７のチ
ェン連動機構８の反対側端に設けた入力スプロケット９
と電動モータ５とをチェン連動させてある。図５、図６
に示すように、第４搬送部２ｄは、一対のレール３４，
３４で搬送方向に直交する方向に移動自在なスライド台
３６に、電動モータ５とローラユニット６とで成る第１
〜第３搬送部と同構造の駆動部分を備えて構成され、ス
ライド台自身の前後移動及びローラユニット６による左
右への移動によって台車４に育苗箱群１Ａを積み込むよ
うに機能する。台車４は、３０段に積層された育苗箱群
１Ａを前後左右に計４組積載して運搬するものであり、
第４搬送部２ｄの積み込み作用によって育苗箱搬送方向
下手側の奥から順に育苗箱群１Ａを詰め込み、それから
発芽室へ運搬して行く。図１３に示すように、育苗箱１
は樹脂成形品であり、底面１ａが搬送コンベヤ２のロー
ラユニット６に載る移送面になるとともに、複数の補強
リブ１ｂが施された持ち運び用の載置部１ｃが側壁の前
後端夫々に形成してある。側壁の補強リブ１ｂの下端縁
を底面１ａよりも若干上方に位置させてある構造によ
り、上下の重合部分を有した状態で育苗箱１を積層自在
な形状に形成してある。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an overall view of a seedling raising box stacking device for stacking a predetermined number (30) of seedling raising boxes 1 after being seeded at a seedling raising plant, etc., 2 is a conveyor for transporting the seedling raising boxes 1, 3 is a seedling raising box 1 Stacking device that pushes up and stacks sequentially from the bottom, 4
Is a trolley for carrying the group 1A of stacked seedling raising boxes and carrying it to a subsequent step such as a germination room. As shown in FIGS. 4 and 5,
The transport conveyor 2 includes first to fourth transport units 2a, 2b, 2c, and 2d from the upper side in the nursery box transport direction,
Each is composed of a dedicated electric motor 5 and a large number of rotating rollers 6 so that they can be driven independently. The transport conveyor 2 adopts the same drive structure for the first to third transport units 2a, 2b and 2c. The structure of the second transport unit 2b will be described below. As shown in FIG. The roller unit 6 formed by attaching the
Input sprocket 9 provided at the opposite end of the chain interlocking mechanism 8 of one of the support shafts 7
And the electric motor 5 are chain-linked. 5 and 6
As shown in FIG. 4, the fourth transport unit 2d includes a pair of rails 34,
A slide base 36, which is movable in a direction orthogonal to the transport direction at 34, has a first unit composed of an electric motor 5 and a roller unit 6.
It is configured to have a drive part having the same structure as the third transport part, and functions to load the seedling raising group 1A on the dolly 4 by the forward and backward movement of the slide table itself and the lateral movement by the roller unit 6. The dolly 4 is for carrying a total of four nursery box groups 1A stacked in 30 stages in the front, rear, left and right, and transporting them.
By the loading action of the fourth transport section 2d, the seedling raising box group 1A is sequentially packed from the back on the lower side in the seedling raising box transporting direction, and then transported to the germination chamber. As shown in FIG. 13, the nursery box 1
Is a resin molded product, and the bottom surface 1a serves as a transfer surface on which the roller unit 6 of the conveyor 2 is mounted, and the carrying mounting portions 1c provided with a plurality of reinforcing ribs 1b are formed at the front and rear ends of the side wall, respectively. There is. Due to the structure in which the lower end edge of the reinforcing rib 1b on the side wall is located slightly above the bottom surface 1a, the seedling raising box 1 is formed in a stackable shape with upper and lower overlapping portions.

【０００８】次に、積層装置３の構造について説明す
る。図３、図４、及び図７に示すように、積層装置３
は、所定位置に搬送されてきた育苗箱１を一定量上方に
押上げるリフト機構１０と、このリフト機構１０によっ
て押上げられた育苗箱１をその押上げられた位置で保持
する支持機構１１とから構成されている。支持機構１１
は、電動シリンダ（駆動手段に相当）１３による水平方
向のスライド移動により育苗箱１の左右側壁の載置部１
ｃに対して同時に出退自在な一対の長尺形状の係合片１
２（図１３参照）で構成（揺動移動により出退自在な係
合片１２でも良い）され、係合片１２が育苗箱１側に突
出した受止め姿勢（図７の状態）にあるとこれら突出係
合片１２に載置部１ｃを載せ付けるることで育苗箱１を
載付け支持可能であり、かつ、係合片１２が外方に移動
して退入した非作用姿勢にあると育苗箱１の上下方向の
移動を許容する状態に係合片１２の出退移動量を設定し
てある。電動モータ１４とネジ送り機構１５とで構成さ
れる電動シリンダ１３に代えて油圧シリンダやソレノイ
ドを用いるものでも良い。リフト機構１０は、３個のコ
ロ６ａ間に位置する連結部１８ａと、搬送方向で隣合う
ローラユニット６間に位置する昇降部１８ｂとを単一の
平面レベルとなる状態で一体形成して成る昇降台１８、
この昇降台１８を昇降操作する回転カム１９、及びギヤ
ードモータ２０によって構成されている。昇降台１８の
下面中央部分に設けた支持部材１７の下端に、回転カム
１９に追従接触するベアリング２１が支承されるととも
に、昇降台１８の前後には昇降移動軌跡を決定するガイ
ド機構２２が備えてある。又、昇降台１８の育苗箱搬送
方向の上手側端部には、昇降台１８によって押上げられ
る育苗箱１の次に搬送されてくる育苗箱１を、リフト機
構１０の押上げ作動開始から元の位置に戻るまでの間に
亘って、昇降台１８の作動に干渉しない位置に待機させ
る屈曲板製のストッパー部Ｓを設けてある。ガイド機構
２２は、図９に示すように、コンベヤフレーム２３に支
持される筒軸２４に昇降台１８に取付けられたガイド軸
２５を内嵌し、ガイド軸２５下端の受け板２５ａとコン
ベヤフレーム２３側との間に圧縮バネ２６を介装して構
成されている。つまり、昇降台１８は前後のバネ２６，
２６によって下降付勢されることでベアリング２１が回
転カム１９に追従するようにしてある。尚、１８ｃはロ
ーラ６との干渉を避ける逃げ孔である。回転カム１９に
は、複数の検出片Ｋ₁ 〜Ｋ₅ がボルト止めしてあるとと
もに、コンベヤフレーム２３には前記検出片Ｋ₁ 〜Ｋ₅
の通過によって作動するセンサ（光学式センサ等）２７
が取付けてあり、その検出センサ２７とギヤードモータ
２０と第１乃至第３搬送部２ａ，２ｂ，２ｃの計３個の
電動モータ５と一対の電動シリンダ１３と後述する感知
センサ２９、ソレノイド３０、リミットスイッチ３１、
及び接触スイッチ３３とを制御装置２８に接続して図２
に示す自動積層制御回路Ａが構成してある。Next, the structure of the laminating apparatus 3 will be described. As shown in FIGS. 3, 4, and 7, the laminating apparatus 3
Is a lift mechanism 10 that pushes the nursery box 1 that has been transported to a predetermined position upward by a certain amount, and a support mechanism 11 that holds the nursery box 1 that has been pushed up by the lift mechanism 10 at the pushed up position. It consists of Support mechanism 11
Is mounted on the left and right side walls of the nursery box 1 by a horizontal slide movement by an electric cylinder (corresponding to a driving means) 13.
A pair of elongated engagement pieces 1 that can be moved in and out simultaneously with respect to c
2 (see FIG. 13) (the engaging piece 12 may be retractable by swinging movement), and the engaging piece 12 is in a receiving posture (state of FIG. 7) protruding toward the nursery box 1 side. By mounting the mounting portion 1c on these protruding engagement pieces 12, the seedling raising box 1 can be mounted and supported, and the engagement pieces 12 move outward and are in a non-working posture. The withdrawal movement amount of the engagement piece 12 is set in a state in which the vertical movement of the nursery box 1 is allowed. A hydraulic cylinder or a solenoid may be used instead of the electric cylinder 13 composed of the electric motor 14 and the screw feed mechanism 15. The lift mechanism 10 is formed by integrally forming a connecting portion 18a located between the three rollers 6a and an elevating portion 18b located between the roller units 6 adjacent to each other in the transport direction in a single plane level. Lift 18,
It is composed of a rotary cam 19 for raising and lowering the lift 18 and a geared motor 20. A bearing 21 that follows and contacts the rotating cam 19 is supported at the lower end of a support member 17 provided in the central portion of the lower surface of the lift 18 and a guide mechanism 22 that determines the lift movement trajectory is provided before and after the lift 18. There is. At the upper end of the elevator table 18 in the conveying direction of the nursery box, the nursery box 1 conveyed next to the nursery box 1 pushed up by the elevator table 18 is moved from the start of the lifting operation of the lift mechanism 10 to the original position. A stopper portion S made of a bent plate is provided so as to stand by at a position where it does not interfere with the operation of the lift 18 until it returns to the position. As shown in FIG. 9, the guide mechanism 22 has a cylindrical shaft 24 supported by a conveyor frame 23 in which a guide shaft 25 attached to the elevating table 18 is fitted, and a receiving plate 25 a at the lower end of the guide shaft 25 and the conveyor frame 23. A compression spring 26 is interposed between the side and the side. In other words, the lift 18 has the front and rear springs 26,
The bearing 21 follows the rotary cam 19 by being urged downward by 26. Incidentally, 18c is an escape hole for avoiding interference with the roller 6. The rotating cam 19, a plurality of detection pieces K ₁ ~K ₅ is bolted, the detection piece K ₁ ~K ₅ to the conveyor frame 23
Sensors (optical sensors, etc.) 27 that are activated by passage of
Is attached, and a detection sensor 27, a geared motor 20, a total of three electric motors 5 of the first to third conveyance units 2a, 2b, and 2c, a pair of electric cylinders 13, a detection sensor 29 described later, and a solenoid 30, Limit switch 31,
2 by connecting the contact switch 33 and the contact switch 33 to the control device 28.
The automatic stacking control circuit A shown in FIG.

【０００９】次に、積層装置３の作用を説明する。図９
に示すように、第２搬送部２ｂの終端にはソレノイド３
０の伸縮によって左右軸心Ｐ周りで揺動移動自在なアー
ム３５の先端に接触式の育苗箱感知センサ２９が設けて
あり、搬送育苗箱１が感知センサ２９に接当すると第２
搬送部１ｂの電動モータ５が停止するとともに、ギヤー
ドモータ２０が起動されて回転カム１９が回転し始め
る。そして、0.14秒かかって育苗箱１が第１所定高さ
（14.5mm）上昇すると第２検出片Ｋ₂ によって検出セン
サ２７が作動し（図１０の状態）、それによって電動シ
リンダ１３が作動して左右の係合片１２が受止め姿勢か
ら非作用姿勢に0.12秒かかって移動するとともに、第２
検出片Ｋ₂ の検出から第３検出片Ｋ₃ を検出するまでの
0.17秒間は回転カム１９のベアリング２１との接触半径
が一定であり育苗箱１は第１所定高さに維持される。第
１所定高さは押上げ育苗箱１が上側の育苗箱１の下端に
接当する高さ（12.5mm）よりも少し高いめに設定してあ
る。第３検出片Ｋ₃ によって検出センサ２７が作動する
と、電動シリンダ１３が停止されるとともに回転カム１
９によって再び昇降台１８の上昇が始まり、0.42秒かか
って第４検出片Ｋ₄ が検出センサ２７に到達する（図１
１の状態）と昇降台１８が第２所定高さである上限迄上
昇（50mm）するとともに電動シリンダ１３が作動して係
合片１２が非作用姿勢から受止め姿勢に0.12秒かかって
移動し、更に、第５検出片Ｋ₅ を検出するまでの0.16秒
間は回転カム１９のベアリング２１との接触半径が一定
であり育苗箱１は第２所定高さに維持される。第５検出
片Ｋ₅ によって検出センサ２７が作動すると、電動シリ
ンダ１３が停止されるとともに回転カム１９によって昇
降台１８の下降が始まる状態になる。そして、0.71秒か
かって第１検出片Ｋ₁ が検出センサ２７部位に達する元
の状態（図９の状態）に戻ると昇降台１８も元の高さに
下降し、かつ、ギヤードモータ２０が停止し、次に来る
育苗箱１によって感知センサ２９が作動するまでギヤー
ドモータ２０の停止状態が維持される。又、第２搬送部
２ｂの電動モータ５は感知センサ２９が作動してから第
５検出片Ｋ₅ が検出センサ２７部位に達するまでは停止
され、それ以外の間は駆動されるのである。Next, the operation of the laminating apparatus 3 will be described. Figure 9
As shown in FIG. 3, the solenoid 3 is provided at the end of the second transport unit 2b.
A contact type nursery box detection sensor 29 is provided at the tip of an arm 35 that is swingable about the left-right axis P by extension and contraction of 0, and when the transport nursery box 1 abuts the detection sensor 29, the second
The electric motor 5 of the transport section 1b is stopped, the geared motor 20 is activated, and the rotary cam 19 starts to rotate. Then, when it takes 0.14 seconds to raise the seedling raising box 1 by the first predetermined height (14.5 mm), the detection sensor 27 is activated by the second detection piece K ₂ (state of FIG. 10), and thereby the electric cylinder 13 is activated. While the left and right engaging pieces 12 move from the receiving posture to the non-acting posture in 0.12 seconds,
From detection of detection piece K ₂ to detection of third detection piece K ₃
The contact radius of the rotary cam 19 with the bearing 21 is constant for 0.17 seconds, and the seedling raising box 1 is maintained at the first predetermined height. The first predetermined height is set to be slightly higher than the height (12.5 mm) at which the push-up nursery box 1 contacts the lower end of the upper nursery box 1. When the detection sensor 27 is activated by the third detection piece K ₃ , the electric cylinder 13 is stopped and the rotary cam 1
The ascending / descending table 18 starts to rise again by 9, and the fourth detection piece K ₄ reaches the detection sensor 27 in 0.42 seconds (FIG. 1).
1 state) and the lift 18 is raised to the upper limit (50 mm) which is the second predetermined height, and the electric cylinder 13 operates to move the engaging piece 12 from the non-acting position to the receiving position in 0.12 seconds. Furthermore, the contact radius of the rotary cam 19 with the bearing 21 is constant for 0.16 seconds until the fifth detection piece K ₅ is detected, and the seedling raising box 1 is maintained at the second predetermined height. When the detection sensor 27 is actuated by the fifth detection piece K ₅ , the electric cylinder 13 is stopped and the rotary cam 19 starts the descent of the lift table 18. Then, when it takes 0.71 seconds to return to the original state (state of FIG. 9) where the first detection piece K ₁ reaches the detection sensor 27 portion, the lift 18 also descends to the original height, and the geared motor 20 stops. Then, the geared motor 20 is maintained in the stopped state until the sensor 29 is activated by the next seedling raising box 1. Also, since the electric motor 5 of the second conveying section 2b operates the sensing sensor 29 to the fifth detection piece K ₅ reaches the detecting sensor 27 site is stopped, while the other is being driven.

【００１０】以上の１サイクル1.60秒の積上げ作動が繰
返されることで３０段積重ねられると、最上段の育苗箱
１によって積層フレーム３２に装備した接触スイッチ３
３（図３参照）が操作され、ギヤードモータ２０をして
昇降台１８が第１所定高さに上昇し、係合片１２が非作
用姿勢に操作され、かつ、ソレノイド３０が縮小移動し
てアーム３５が下降移動し、一旦育苗箱群１Ａが昇降台
１８に載せられ、次いで、昇降台１８が下降して育苗箱
群１Ａは第２〜第４搬送部２ｂ，２ｃ，２ｄによって台
車４に搬送されて行くのである。尚、図３、図４に示す
ように、第３搬送部２ｃ部位には育苗箱１の通過を検出
するリミットスイッチ３１が設けてあり、育苗箱群１Ａ
の通過に伴うリミットスイッチ３１の作動によってソイ
レノイド３０が伸長作動し、育苗箱１の搬送を阻止する
状態に戻る。上記１サイクル間は、次の育苗箱１が昇降
台１８の移動軌跡に進入してくるのを前記ストッパーＳ
で防止するのであるが、作用突起１７は、通常は育苗箱
１の下端よりも若干（２mm程度）距離下がった位置で待
機するため、この待機位置ではストッパーＳの進入防止
機能が発揮されないことになる。しかしながら、ストッ
パーＳには搬送方向に幅があるので、感知センサ２９の
作動に伴う昇降台１８の上昇移動開始から前記若干距離
上昇するに要する時間よりも、次の育苗箱１が幅Ｌ搬送
されるに要する時間が長く設定してあり、確実にストッ
パー機能が現出されるようにしてある。参考に、上記１
サイクルの作動順序系統グラフを図１５に、かつ、回転
カム１９の形状と検出片Ｋ₁ 〜Ｋ₅ との関係を示す拡大
図を図１４に夫々表しておく。以上により、リフト機構
１０で押上げられる上昇育苗箱１の上面が、係合片１２
に載付け支持された載置育苗箱１の下面に接当してこの
載置育苗箱１を若干量上昇させるに相当する高さに達す
ると、リフト機構１０の上昇作動が停止するとともに係
合片１２を退避移動させ、係合片１２の退避移動後にリ
フト機構１０を再作動させて上昇育苗箱１を一定量押上
げると退避姿勢にある係合片１２を突出移動して上昇育
苗箱１が支持機構１１に載付け支持される状態に、上昇
育苗箱１の高さ位置を検出する検出手段Ｂ（検出センサ
２７と第１〜第５検出片Ｋ₁ 〜Ｋ ₅ で構成される）と駆
動手段である電動シリンダ１３とリフト機構１０とを制
御手段である制御装置２８に連係させてある。The stacking operation of 1.60 seconds per cycle is repeated.
When it is returned and stacked in 30 layers, the topmost nursery box
Contact switch 3 mounted on the laminated frame 32 by 1
3 (see Fig. 3) is operated and the geared motor 20
The elevating table 18 is raised to the first predetermined height, and the engaging piece 12 is not operated.
And the solenoid 30 is contracted and moved.
Arm 35 descends, and seedling raising group 1A is once raised and lowered.
18 and then the lift 18 descends to raise the seedling box.
The group 1A is pedestal by the 2nd-4th conveyance parts 2b, 2c, 2d.
It is transported to the car 4. Incidentally, as shown in FIG. 3 and FIG.
The passage of the nursery box 1 is detected at the third transport section 2c
There is a limit switch 31 for
When the limit switch 31 is activated when the
Renoid 30 stretches and blocks the transport of nursery box 1.
Return to the state. During the above 1 cycle, the next raising box 1 moves up and down.
The stopper S enters the movement path of the table 18.
However, the action protrusions 17 are usually provided in the nursery box.
Wait at a position slightly (2 mm) below the bottom edge of 1
To prevent the stopper S from entering at this standby position
The function will not be exhibited. However,
Since the par S has a width in the conveying direction, the sensor S
A little distance from the start of the ascending / descending movement of the lift 18 due to the operation
The width of the next nursery box 1 is conveyed by width L rather than the time required to rise
The time required for
The par function is made to appear. For reference, above 1
Figure 15 shows the cycle sequence graph of the cycle and rotation
Shape of cam 19 and detection piece K₁~ K_FiveEnlarged to show relationship with
The figures are shown in FIG. 14, respectively. Due to the above, the lift mechanism
The upper surface of the raising seedling box 1 pushed up by 10 is the engaging piece 12
Abut on the lower surface of the placed nursery box 1 that is mounted and supported on the
Reach a height equivalent to slightly raising the placing nursery box 1.
Then, the lifting operation of the lift mechanism 10 is stopped and
The coupling piece 12 is retracted and moved, and after the engagement piece 12 is retracted and moved,
The lift mechanism 10 is reactivated to push up the raised seedling raising box 1 by a certain amount.
When pulling up, the engaging piece 12 in the retracted position is projected to move and rise.
Raise the seedling box 1 to a state where it is mounted on and supported by the support mechanism 11.
Detection means B (detection sensor) for detecting the height position of the nursery box 1
27 and the first to fifth detection pieces K₁~ K _FiveComposed of) and
It controls the electric cylinder 13 and the lift mechanism 10, which are moving means.
It is linked to the control device 28 which is a control means.

【００１１】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configuration of the accompanying drawings by the entry.

【図面の簡単な説明】[Brief description of drawings]

【図１】積層装置の全体構造を示す平面図FIG. 1 is a plan view showing the overall structure of a laminating apparatus.

【図２】自動積層制御回路を示す系統図FIG. 2 is a system diagram showing an automatic stacking control circuit.

【図３】第１〜第３搬送部の構造を示す側面図FIG. 3 is a side view showing a structure of first to third conveyance units.

【図４】第１〜第３搬送部の構造を示す平面図FIG. 4 is a plan view showing a structure of first to third transport units.

【図５】第４搬送部の構造を示す平面図FIG. 5 is a plan view showing the structure of a fourth transport section.

【図６】第４搬送部の構造を示す側面図FIG. 6 is a side view showing the structure of a fourth transport section.

【図７】積層装置の構造を示す横断面図FIG. 7 is a cross-sectional view showing the structure of the laminating apparatus.

【図８】第１〜第３搬送部の駆動構造を示す平面図FIG. 8 is a plan view showing a drive structure of first to third transport units.

【図９】積層装置での昇降作動状態を示す作用図FIG. 9 is an operation diagram showing a lifting operation state in the stacking device.

【図１０】積層装置での昇降作動状態を示す作用図FIG. 10 is an operation diagram showing a lifting operation state in the laminating apparatus.

【図１１】積層装置での昇降作動状態を示す作用図FIG. 11 is an operation diagram showing a lifting operation state in the stacking device.

【図１２】積層装置での昇降作動状態を示す作用図FIG. 12 is an operation diagram showing a lifting operation state in the laminating apparatus.

【図１３】育苗箱の斜視図FIG. 13: Perspective view of nursery box

【図１４】回転カムの形状と検出片の関係を示す拡大図FIG. 14 is an enlarged view showing the relationship between the shape of the rotating cam and the detection piece.

【図１５】積層装置の作動系統グラフFIG. 15 is an operating system graph of the stacking device.

【符号の説明】[Explanation of symbols]

１ 育苗箱 ２ｂ 搬送装置 ６ ローラユニット ６ａ コロ １０ リフト機構 １１ 支持機構 １８ 昇降台 １８ａ 連結部 １８ｂ 昇降部 ２８ 制御手段 ３３ 段数検出センサ 1 Nursery box 2b Transport device 6 Roller unit 6a Roller 10 Lift mechanism 11 Support mechanism 18 Elevating table 18a Connecting part 18b Elevating part 28 Control means 33 Stage number detection sensor

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 複数のコロ（６ａ）を軸方向に並設して
成るローラユニット（６）を搬送方向一定間隔毎に配置
して構成される搬送装置（２ｂ）により、所定位置に搬
送されてきた重積み自在な育苗箱（１）を一定量上方に
押上げるリフト機構（１０）と、このリフト機構（１
０）によって押上げられた育苗箱（１）をその押上げら
れた位置で保持する支持機構（１１）とを備え、前記支
持機構（１１）で保持される育苗箱（１）を前記リフト
機構（１０）の育苗箱押上げ作動によって下層の育苗箱
（１）から順次積上げていく積上げ作動を繰り返すとと
もに、前記支持機構（１１）で保持される育苗箱（１）
が所定段数に達すると前記リフト機構（１０）の作動が
停止する状態に、前記支持機構（１１）に保持された育
苗箱（１）の段数を検出する段数検出センサ（３３）
と、前記支持機構（１１）と前記リフト機構（１０）と
を連係させる制御手段（２８）を設け、更に、前記リフ
ト機構（１０）における育苗箱押上げ用の昇降台（１
８）を、並設される複数の前記コロ（６ａ），（６ａ）
間に位置する連結部（１８ａ）と、搬送方向で隣合う前
記ローラユニット（６），（６）間に位置する昇降部
（１８ｂ）とを単一の平面レベルとなる状態で一体形成
して構成してある育苗箱積重ね装置。1. A conveyor device (2b) configured by arranging a roller unit (6) comprising a plurality of rollers (6a) arranged side by side in the axial direction at regular intervals in the conveying direction to convey the roller unit (6a) to a predetermined position. A lift mechanism (10) that pushes up the piled up nursery box (1) that can be stacked freely by a certain amount, and this lift mechanism (1).
0) and a support mechanism (11) for holding the seedling raising box (1) in the pushed-up position, and the lift mechanism holds the seedling raising box (1) held by the support mechanism (11). The seedling raising box (1) is held by the support mechanism (11) while repeating the stacking operation of sequentially raising the seedling raising box (1) from the lower layer by the pushing up operation of the seedling raising box (10).
When a predetermined number of stages has been reached, the stage number detection sensor (33) for detecting the number of stages of the seedling raising box (1) held by the support mechanism (11) in a state in which the operation of the lift mechanism (10) is stopped.
And a control means (28) for linking the support mechanism (11) and the lift mechanism (10), and further, a lift table (1) for pushing up the nursery box in the lift mechanism (10).
8), the plurality of rollers (6a), (6a) arranged side by side
The connecting portion (18a) located between them and the elevating portion (18b) located between the roller units (6) and (6) adjacent to each other in the conveying direction are integrally formed in a single plane level. A nursery box stacking device configured.