JPH06189628A - Cutting of grafting nursery plant - Google Patents

Abstract

PURPOSE:To provide a method for cutting a grafting stock seedling or scion seedling at nearly definite inclination angle without damaging the seedling. CONSTITUTION:A tray belt is produced by connecting the upper parts of a number of pots. Plural rows of trays are parallelly put into a raising seedling box, the box is transferred to the starting end of the cutting process and the trays are taken out of the raising seedling box one row at a time and supplied to the cutting stage. The stalks of the seedlings of the foremost row are clamped and cut with a knife working in a plane inclined relative to the stalk and the process is repeated. The stalk is cut in a clamped state at the part to form a bonding face in grafting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of cutting a stem of a seedling to be a rootstock or a scion for grafting a plant seedling such as vegetables, flowers or fruit trees.

[0002]

2. Description of the Related Art Conventionally, a series of conveyors are provided with a holding section for holding rootstock seedlings and a rootstock cutting section, and a tray in which a large number of pots are vertically and horizontally connected is stored in a seedling raising box. A grafted seedling cutting method of transporting a box by the transport conveyor to cut seedlings is already known.

[0003]

According to the known method for cutting grafted seedlings described above, a large number of seedlings are cut in a state that they are vertically and horizontally arranged in a nursery box. Since the seedlings were different from each other, pinching of seedlings became inaccurate and seedlings were mistakenly gripped, and the inclination angle of the cut surface was uneven, resulting in a lowering of the survival rate and poor growth due to seedling pain. Further, if a plurality of seedlings are treated at the same time, it is difficult to dispose a plurality of treatment means because the space for each seedling is small, and the cost is significantly increased.

[0004]

According to the present invention, the upper portions of a large number of pots are connected to form a belt-shaped tray, and a plurality of rows of the trays are accommodated in a nursery box in parallel, and the nursery boxes are used as the starting points of the cutting process. The trays in the seedling raising box are transferred and taken out row by row and supplied to the cutting step. In the cutting step, the seedlings in the front row are sandwiched in order and grafted by a knife that operates in a plane oblique to the stem of this seedling. The above-mentioned problem was solved by cutting the part which is to be the joint surface in a sandwiched state.

[0005]

[Operation] A plurality of pots are connected to each other in the form of strips and the trays are accommodated in a row in a row in a nursery box, and the nursery boxes are transferred to the starting side of the cutting step. Row by row, hold the stems of the seedlings in the front row, and in this state, cut diagonally with a knife that operates in a plane diagonal to the stems, and after releasing the holding, the rootstock seedlings have their cut surface. The scion is transferred to the grafting process, where the scions are collected and moved to the grafting process.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. At the end of the feeding step A, there are a root cutting step B or a scion cutting step B'having the same cutting portion but different post-treatments. In the feeding step A, the feeding conveyor 1 is composed of a roller conveyor and is inclined downward to such an extent that the seedling raising box 2 placed thereon moves by its own weight in the feeding step A. 3a ... are arranged in a line and a plurality of rows of trays 3 are connected in parallel so that the upper portions of the trays 3 are connected in parallel. The side walls of the seedling raising box 2 are low, and the connecting portion of the upper portion of the accommodated tray 3 is upward. The height is a little overhanging.

The pair of left and right carrier chains 6, 6 of the supply device 5 at the final stage of the supply process A are attached to both ends of a pair of front and rear shafts 8, 8 supported by the supply frame 7 via bearings. The sprocket 9 is hung on the sprocket 9 ... With a proper interval in the lengthwise direction, and the shaft 8 on the lower side in the supply direction is connected via a motor 11, a coupling 12, a speed reducer 13 and a chain 14. Driven, close to the starting ends of the carrying chains 6 and 6 (a portion substantially corresponding to the starting end of the carrying path in the cutting process B for rootstock or the cutting process B ′ for scion)
Is provided with a hydraulic (or air) cylinder 18 and sensors 16 and 16 attached to a horizontal rail 15 which is integral with the supply frame 7. A rod of the cylinder 18 has a pair of stopper pins 17 and 17 through a plate. 17 is mounted, and the cylinder 18 has the stopper pin 1 when the sensors 16 and 16 are not detected.
7 and 17 are projected onto the transport surface to receive the nursery box 2.

When the sensor 16 detects the seedling raising box 2, the motor 11 stops and the conveyance is stopped. At the same time, the cylinder 18 extends and the stopper pins 17, 17 are lowered to the lower side of the conveying surface, and thereafter. , The motor 11 is operated intermittently, whereby the transport chain 6 is rotated at the same pitch as the width of the tray 3 and in synchronization with the pulling out of the tray 3 in the cutting step B for the rootstock.
Are successively opposed to the starting end of the cutting process, and when the tray 16 of one seedling raising box 2 is completed and the sensor 16 becomes non-detected, the stopper pins 17 and 17 project into a receiving posture, and the motor 11 continuously rotates. Then, the preceding nursery box 2 is emptied and conveyed, and the next nursery box 2 is rapidly transferred and pressed against the stopper pins 17 and 17 to be positioned in a fixed posture. At this time, since the sensors 16 and 16 detect the seedling raising box 2, as described above, the stopper pins 17 and
17 is retracted downward, and the transport chains 6 and 6 restart the intermittent transfer. A level stocker 19 is provided on the discharge side of the transport chain 6.

In the cutting step B for the rootstock, a smooth strip-shaped sliding guide plate 22 is provided on a substantially horizontal main frame 21 having a plurality of columns 20 ..., The starting end portion of which is a raised guide portion. The second transfer block 25 formed on the main frame 21 is provided with a first transfer block 25 on one side thereof, and the support member 26 erected at the intermediate portion and the terminal end portion of the other side faces the main frame 21. The block 27 is attached, the first elevating cylinder 30 is attached to the sliding plate 28 attached to the first transfer block 25, and the piston of the first advancing / retreating cylinder 31 attached to the upper part of the first elevating cylinder 30 is seen in a plan view. Since the L-shaped transfer claw 32 is attached,
When the first elevating cylinder 30 is operated, it moves up and down, and when the first advancing / retreating cylinder 31 is operated, the first advancing / retreating cylinder 30 advances and retracts in a direction orthogonal to the transport direction in a plan view.

Then, when the sliding plate 28 is positioned at the end side of the supply step A and the first advancing / retreating cylinder 31 is pushed out, the conveying pawl 32 moves from the X position in FIG. 5 to the end pots 3a, 3a. When the first lifting cylinder 30 is extended in this state by intervening in between, the transporting claw 32 moves up as shown by the chain line to lift the end of the tray 3. Therefore, the first transporting block 25 is operated in this state. After a little pulling in the direction (a), when the first lifting cylinder 30 is contracted to lower the conveying claw 32, the strip-shaped tray 3 gets over the side plate of the seedling raising box 2 and rides on the slide guide plate 22. When the first transfer block 25 is further operated in this state, the bottom surface of the tray 3 slides on the slide guide plate 22, and the side portions are held by the guides 33, 33 on both sides so as not to fall down, and the seedlings described later will be described. Cutting equipment Move to the right beside of 35.

The second transfer block 27 is a support member 26.
A second elevating cylinder 39 is connected to the piston of the second advancing / retreating cylinder 38 mounted on the upper frame 36 fixed to the above, and mounted on the upper sliding plate 37 that moves back and forth by the second transport block 27. The L-shaped transfer claw 40, which is connected to the piston of the second elevating cylinder 39 via a spring, in the transfer direction, inherits the tray 3 transferred by the first transfer block 25 and cuts the rootstock B. When transferring to the recovery process C on the lower side of the tray 3,
The front part of the seedling raising box is lifted over the side wall of the waiting seedling raising box 2 and pulled into the seedling raising box 2.

The seedling cutting device 35 arranged in the middle of the first transfer block 25 comprises a seedling posture correcting section 41 and a cutting section 42, which are connected to each other at a support frame 43.
Of the scissors-like claws 45, which are attached so as to be opposed to the left and right sides of the seedling, and which hold the seedling posture correcting portion 41 gently around the stems of the seedlings, and a chuck 46 for opening and closing it. , A cylinder 48 which is integral with the plate 47 and supports the chuck 46 via a mounting plate 47a, and a motor 49 mounted on the upper end of the support frame 43 on that side is interlocked with a coupling 50 and a screw rod 51. Since the nut 52 connected to and fixed to the plate 47 is screwed to the screw rod 51, the pawl 45 moves up and down when the motor 49 is driven to rotate in the forward and reverse directions, and the pawl 45 moves when the cylinder 48 is extended and retracted. Move forward and backward with respect to the transported seedlings.

The cutting section 42 has the same lifting device (motor 49, coupling 50, screw rod 51 and nut 52) as described above, and the nut 52 has a T-shaped support plate 5 attached thereto.
3 is fixed, a cylinder 57 that moves forward and backward in a lateral direction is attached to a moving frame 56 that moves back and forth by a slide plate 55 on the support plate 53, and the cylinder 57 is sandwiched by an intermediate portion of a mounting plate 58 that hangs from a piston of the cylinder 57. Chuck 6 with claw 59
Fixed 0 and tilted at the lower end by about 45 degrees (in order to make the angle of the cutting surface of the stem gentler, make it larger)
The bracket 61 is attached to the pinion 62 as shown in FIG.
A knife 63 that rotates integrally with the pinion 62 is supported.
The rack 64 that meshes with is moved forward and backward by the cylinder 65, and in conjunction with this, the knife 63 cuts the stem of the seedling obliquely and then returns and rotates. Further, sensors 66, 66 are mounted opposite to each other at the upper end of a U-shaped frame 66a having one end fixed to the support frame 43.

When the frontmost pot of the feeding claw 32 is fed to the portion corresponding to the seedling cutting device 35 and the sensor 66 detects the seedling stem, the first feeding block 2
The conveyance by 5 is temporarily stopped, the cylinder 48 operates, and the nail 45 advances to the base of the seedling stalk with the nail 45 opened, and the chuck 46 operates, so that the nail 45 closes so as to surround the stalk.
Then, the left and right motors 49, 49 are synchronously activated, whereby the claw 45 rises together with the plate 47, the chuck 46, etc. in the closed state, so that even if the seedling stem is inclined, it is corrected to a substantially upright state. Sensor 66 is a cotyledon (two leaves)
When both of the motors 49 and 49 are stopped, the claw 45 holds the seedling in a posture-corrected state, and then the cylinder 57 pushes out the sandwiching claw 59 in the open posture and the chuck 60
When the clamping claw 59 clamps the upper part of the cotyledon by actuating, the claw 45 of the seedling posture correcting section 41 is opened and retracted by the cylinder 48. After that, the first transport block 25 and the slide plate 55 cause the tray 3 to move. Is moved by one pot 3a at the same speed, the cylinder 65 is activated at this moved position to rotate the knife 63, and the knife 63 cuts a portion close to the upper part of the cotyledon of the seedling. In the meantime, the seedling posture correction unit 41 performs the above-described posture correction on the seedlings in the next pot 3a, and the cutting unit 42 performs the cutting process and then the slide plate 5
5, the seedling posture correcting unit 41 clamps the stem of the seedling whose posture has been corrected as described above. The cut ear side part is dropped into the box placed below. This pitch conveyance cutting is repeated for the number of pots in tray 3, and when it is completed,
The first transport block 25 is returned and operated, and the next tray 3 is pulled out from the supply device 5.

With respect to the tray 3 thus cut, the cylinders 38 and 39 of the second transfer block 27 are operated, whereby the transfer claw 40 enters between the pots 3a and 3a and hooks the front end pot 3a. , And they are stored one by one in the empty seedling raising boxes 2 that are transported in that state and are waiting in the collecting step C.

Next, an apparatus for treating the seedling raising box 2 in the collecting step C will be described. The carry-in device 68 for sending the empty seedling raising box 2 containing the tray 3 which has been cut to the end of the conveying path is the feeding device. 5, the loading device 70 for placing the seedling raising box 2 loaded with the trays 3 on the transfer start end side of the loading device 68 has two receiving claws 71,
Two upper and lower fulcrum shafts 73, 7 having 71 and 72, 72
4 are pivotally supported on both sides of a frame body 77 that is open only on the receiving side, and a pair of arms 75, ... Protrudingly provided at the ends of the fulcrum shafts 73, 74 are provided with an upper rodless cylinder 76a and a lower rodless cylinder 76b. , And at the start of the work, a plurality of empty nursery boxes 2 are housed in a guide plate 77a inside the frame 77, and the lower receiving claws 72 ... Are on the bottom surface of the lowermost nursery box 2. Engages to support the whole nursery box 2 ... And has the same effect as the above-mentioned stopper pin 17, and the upper receiving claws 71 ... are at the bottom of the ribs on the upper side surface of the second nursery box 2 from the bottom. There is a seedling raising box 2 that faces a narrow gap, and further below the transport chains 6 and 6, the trays 3 that have been subjected to the cutting treatment transported by the second transport block 27 are sequentially drawn in, and the sensor 16 ( (Not shown) is just before the transport route ( Since it is in a position where it will not be detected if it is conveyed one pitch immediately after the box 2 is full, the conveyance chains 6 and 6 are in the detection state while the tray is being drawn, and the motor 11 sets the same pitch as the width of the pot 3a and the retraction timing. When the seedling raising box 2 becomes full, the sensor 16 becomes non-detectable and the motor 1 of the carry-in device 68 rotates.
1 continuously carries out the filled seedling raising box 2, and in the meantime, the lower receiving claws 72 ... Open, so that the seedling raising box 2 at the lowermost stage is carried on the carrying chains 6 and 6, 2 from the bottom
The second seedling raising box is received by the upper receiving claws 71 ..., When the sensor 16 detects the conveyed seedling raising box 2, the motor 11 is temporarily stopped, and thereafter, the motor 11 is intermittently rotated to sequentially receive the tray 3 and then downward. The seedling box 2 is stacked when the receiving claws 72 ... of the
Is lowered by one step and is received by the lower receiving claw 72.

Referring to FIG. 12, the processing step of the spikelet is substantially the same as the supply step A'and the cutting step B'for the rootstock, which are the same as the above-mentioned feeding step A and the cutting step B for the rootstock. However, in the cutting step B ′, after the slide plate 55 of the cutting unit 42 completes the cutting process of the moving frame 56,
It is moved to the direction of (b) in the direction of (b) without returning immediately like the processing of the rootstock, and onto the sorting box 78 (also shown in FIG. 4). During this movement, the sorting device (laser sensor, photoelectric sensor, or infrared ray) is moved. Sorting is performed by an appropriate sorting device such as a sensor), and the sorting box 78 stops above any of the storage compartments, and the holding claws 59 open there, so that the spikes fall into the sorting box 78 via a chute or the like. After that,
The cutting unit 42 returns to a position facing the seedling posture correcting unit 41, and in the meanwhile, the stem of the seedling whose posture has been corrected by the seedling posture correcting unit 41 is grabbed and inherited, and the above-mentioned seedling cutting and scion insertion is performed for one pot. When the processing of one tray 3 is completed, the tray 3 is conveyed to the end by the conveying claw 40 and is collected in the tray collecting box 79.

The spikes and rootstocks thus obtained are used as an automatic grafting device, or as already proposed in Japanese Patent Application No. 4-31274.
When grafting with No. 7 grafting device, etc., the tray 3 of the rootstock seedlings is once collected in the seedling raising box 2 as described above, or directly sent from the rootstock seedling cutting step B to the grafting step without being collected. But good.

[0019]

As described above, the present invention has a large number of pots 3.
The upper part of a is connected to form a band-shaped tray 3, a plurality of rows of the trays 3 are accommodated in the seedling raising box 2 in parallel, and the seedling raising boxes 2 are transferred to the starting end of the cutting process and the trays 3 in the seedling raising box are transferred. Are taken out one by one and supplied to the cutting step, and in the cutting step, the stalks are sandwiched in order from the front row seedlings, and the part to be the joining surface at the time of grafting by the knife 63 that operates in the plane oblique to the stalks of this seedling. Since the seedlings are cut in a sandwiched state, the stems of each seedling can be accurately sandwiched and cut, and the cutting angle with respect to the stems is the same as in the conventional seedling-growing box 2 in which seedlings are planted. The cutting can be performed with high efficiency without causing unevenness or damage to other seedlings.

[Brief description of drawings]

FIG. 1 is a plan view showing an outline of a rootstock seedling cutting step.

FIG. 2 is a plan view of a feeding / supplying device.

FIG. 3 is a side view of the same.

FIG. 4 is a plan view of the cutting device.

FIG. 5 is a front view of the same.

FIG. 6 is a transverse cross-sectional view of a transport unit.

FIG. 7 is a cross-sectional view of a cutting portion.

FIG. 8 is a plan view of a knife driving unit.

FIG. 9 is a front view of a recovery device.

FIG. 10 is a side view of the same.

FIG. 11 is a transverse sectional view of the same.

FIG. 12 is a schematic diagram of a scion cutting process.

[Explanation of symbols]

 A, A Supplying process B Cutting process for rootstock B'Cutting process for scion 2 Raising seedling box 3 Tray 5 Feeding device 16 Sensor 22 Sliding guide plate 23 Raised guide part 25 First transfer block 27 Second transfer block 28 Sliding Plate 30 First Elevating Cylinder 31 First Advance / Retract Cylinder 32 Conveying Claw 35 Seedling Cutting Device 38 Second Elevating Cylinder 39 Second Advance / Retract Cylinder 41 Seedling Posture Modifying Unit 42 Cutting Part 59 Clamping Claw 63 Knife 70 Loading Device

Claims (1)

[Claims] 1. A plurality of pots 3a are connected to each other to form a strip-shaped tray 3, a plurality of rows of the trays 3 are accommodated in a seedling raising box 2 in parallel, and the seedling raising boxes 2 are transferred to the starting end of the cutting step. At the same time, the trays 3 in the seedling raising box are taken out line by line and supplied to the cutting step, and in the cutting step, the stalks are sandwiched in order from the seedlings in the front row, and the knife 63 operates in a plane oblique to the stalks of this seedling. A method for cutting grafted seedlings, characterized in that the part which becomes the joint surface during grafting is cut in a sandwiched state.