JPH0530856A - Grafting device - Google Patents

Abstract

PURPOSE:To provide a grafting device capable of efficiently grafting scions to stocks and suitable for automatic operations by cutting the stocks and the scions, respectively, covering the stems of the stocks with thermally shrinkable tubes, inserting the stems of the scions into the tubes, and subsequently thermally shrinking the tubes. CONSTITUTION:Plural stocks are held on the circumference of a disk-like stock- carrying member 2, and plural scions are also held at a constant interval on the circumference of a disk-like scion-carrying member 3 disposed above the stock-carrying member 2. The stock-carrying member 2 and the scion-carrying member 3 are cooperatively and intermittently rotated to obliquely cut the stems of the stocks and the scions with rotary cutters 6, 7, respectively. The stems of the stocks are covered with thermally shrinkable tube pieces by the use of a tube-feeding member 8 at a stop position and subsequently carried to a stock-holding member 11. The scions are received in a scion-transferring member 13 from the scion-carrying member 3, lowered to the stock-holding member 11 and subsequently inserted into the thermally shrinkable tube pieces. The thermally shrinkable tube pieces in the stock-holding member 11 are thermally shrunk with hot air blown out from a hot air-supplying member 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grafting device for grafting a scion on a rootstock, and more particularly to a grafting device suitable for automating the work of the grafting.

[0002]

BACKGROUND OF THE INVENTION Grafting is a technique which has been widely put into practical use for the purpose of imparting disease resistance to plants, regulating tree vigor, promoting fruit set, increasing yield and improving quality. Conventional grafting has been performed manually, but there is a problem that it takes a lot of labor and time, so automation of grafting has been promoted as a means for solving this problem, and it has already been described in JP-A-1-252228. An automatic grafting device and a grafted seedling production device described in JP-A-2-104125 have been proposed.

However, in both the automatic grafting device and the grafting seedling manufacturing device, it is difficult to position the spikes and the rootstocks separately and to overlap the cut surfaces of both, so that it is difficult to perform accurate overlaying. Since it is a method of fixing the cuttings with a fixing medium such as a band or a tape or a support such as a graft clip, it is difficult to securely adhere the scion and the rootstock even if these fixing means are attached, and the scion is retained. It was difficult to fix, and it had the drawback of damaging the stems of the scion and rootstock. Further, it was necessary to remove the above-mentioned fixing tool after the grafted part was lived.

Therefore, a heat-shrinkable plastic tube with perforations on its side is used as a grafting tool,
A technique has been proposed in which the grafting tool is naturally removed as the plant grows (Japanese Patent Application Laid-Open No. 3-58718).
(See the official gazette).

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a grafting device which grafts a scion and a rootstock with the heat-shrinkable tube as described above and can efficiently carry out the grafting work. And

[0006]

The grafting device of the present invention, which has been made to solve the above-mentioned problems, is a root carrier for intermittently carrying a plurality of roots, and an upper part of the root carrier. A scion transport unit for intermittently transporting a plurality of scions, a stock cutter unit for cutting a stem of the stock transported by the stock transport unit above the stock transport unit at a predetermined angle, and Below the scion transport section, a scion cutter section for cutting the stem of the scion transported by the scion transport section at a predetermined angle, and a heat-shrinkable tube at the stop position of the root block in the latter stage of the root cutter section. A tube mounting portion for mounting the piece on the stem of the rootstock in the stop position, and a heat shrinkable tube piece portion of the stem of the rootstock at a fixed position at a stop position of the rootstock in the latter stage of the tube mounting portion. The root block biting part to be held, and the root block of the root block biting part of the root block biting part extracted from the root block biting part at the position of the root block biting part. Hot air on a heat-shrinkable tube piece that covers the rootstock stem and the spikelet stem with the spikelet transfer part for inserting the stem of the spikelet into the heat-shrinkable tube of the tree stem and the root biting part. And a hot air supply unit that supplies the hot air.

[0007]

In the grafting device of the present invention, the rootstock transport section and the scion transport section intermittently transport a plurality of rootstocks and a plurality of rootstocks, respectively, and the rootstock cutter section sets the rootstock stem at a predetermined angle. The cutting part of the cuttings cuts the stem of the cuttings at a predetermined angle. The tube mounting part inserts the heat-shrinkable tube piece into the stem of the rootstock at the stop position of the rootstock in the latter stage of the rootstock cutter, and the rootstock biting part supports the rootstock at the stop position of the rootstock in the latter stage of the tube mounting part. The part of the heat-shrinkable tube piece of the tree stem is bitten in a fixed position. Then, the scion transferring section extracts the scion from the scion conveying section at the position of the scoop holding section, and inserts the scion stem into the heat-shrinkable tube in the stem of the scribing section. The hot air supply unit supplies hot air to the heat-shrinkable tube piece that covers the stem of the rootstock and the stem of the scion at the rootstock biting unit.

[0008]

1 is a partially crushed plan view showing a grafting device according to an embodiment of the present invention, and FIG. 2 is a front view thereof. As shown,
A motor M, a clutch L, and a gearbox G are arranged below the gantry 1, and an output shaft G1 of the gearbox G has a bearing 1a.
It is pivotally supported by and is projected to the upper part of the gantry 1. A disc-shaped rootstock transport unit 2 is disposed on the upper surface of the pedestal 1, and two discs face each other at a predetermined interval at a position substantially the same height as the upper pedestal 1b mounted on the pedestal 1. A tree transport unit 3 is provided, and the stock transport unit 2 and the scion transport unit 3 are coaxially fixed to the output shaft G1 at the center of the disk.

Twenty positioning stopper insertion holes 201 are formed at equal intervals on the same circumference near the outer periphery of the stock transporting section 2, and a gantry 1 is provided with a positioning stopper 202 which is moved up and down by an air cylinder 203. ing. In the initial state, the positioning stopper 202 is raised and is inserted into the positioning stopper insertion hole 201, and the stock transporting section 2 is stopped at a preset stop position.

After the positioning stopper 202 is lowered, the rotation of the motor M to which the clutch L is connected is changed by the gearbox G.
Is transmitted to the output shaft G1 of the rootstock transport unit 2 and the scion transport unit 3
Are rotated in cooperation with each other in the direction indicated by the arrow in FIG. When the number of rotations of the motor M reaches a predetermined number after the clutch L is connected, the connection of the clutch L is released, and the rotations of the rootstock transport unit 2 and the scion transport unit 3 are stopped. Then, the positioning stopper 202 rises and is inserted into the positioning stopper insertion hole 201, so that the stock transport section 2 and the scion transport section 3 stop at a preset stop position. By repeating the above operation, the rootstock transporting section 2 and the scion transporting section 3 are intermittently rotated at a constant angle.

Twenty sets of stock holders 4 are arranged at equal intervals on the same circumference close to the outer circumference of the stock transport unit 2. As shown in FIG. 3, each stock holder 4 is a disk. Shaped height adjustment plate 4
1, a support member 42 standing in the vicinity of the height adjusting plate 41 and having an arcuate cross section, and a clip 43 attached to the upper end of the support member 42. Then, as shown by the chain double-dashed line in the figure, the rootstock P is placed on the height adjusting plate 41 and the rootstock P is placed.
By sandwiching the stems P1 of the roots with the clips 43, one rootstock P is held in the rootstock holding portion 4.

As shown in FIG. 1, the scion transport section 3 has a smaller diameter than the stock transport section 2, and each scoop of the stock transport section 2 is located at the outer peripheral edge of the scion transport section 3. Twenty sets of scion holders 5 are formed on the same radius corresponding to the holders 4, respectively. As shown in FIG. 4, each scion holding unit 5 includes a clip 51 attached to the outer circumference of a holding plate 31, which is an upper disc of the scion conveying unit 3, and a disc below the scion conveying unit 3. The groove 52 is formed so as to be located directly below the clip 51 on the outer periphery of the support board 32. Then, as shown by the chain double-dashed line in the figure, the stems T1 of the spikes T are inserted into the groove portions 52 and are sandwiched by the clips 51, so that the spikelets T are held one by one in the spike holder 5, respectively. To be done.

As shown in FIGS. 1 and 2, the rotary cutters 6 are provided at one location around each of the scion transport section 3 and the root transport section 2.
7 are arranged respectively. FIG. 5 is a view showing the rotary cutter 6 on the side of the scion conveying section 3, which is a disc-shaped cutter 61.
A rotary shaft 62 fixed at the tip is supported by a bearing 63, and the rotary shaft 62 and the cutter 61 are rotated by the rotary driving force of the flexible wire 64.

The bearing 63 has an arcuate guide groove 65 on the outer circumference.
The bearing 63 is screwed to the substrate 66 via a washer 65 having a, and the position of the bearing 63 with respect to the substrate 66 can be adjusted. Thereby, the inclination angle of the cutter 61 with respect to the board surface of the scion conveying section 3 can be adjusted, and is set to a predetermined angle when used. Then, when the scion T comes to the position of the rotary cutter 6 due to the rotation of the scion transport unit 3, the portion of the stem T1 is cut at a predetermined angle. As shown in FIG. 2, a conveyor 100 is arranged below the rotary cutter 6, and the root portion that drops due to the cutting of the stem T1 is discharged by the conveyor 100.

FIG. 6 is a view showing the rotary cutter 7 on the side of the stock transporting section 2. The rotary cutter 7 has a structure similar to that of the rotary cutter 6 of the scion conveying unit 3, and the rotary shaft 72 and the cutter 71 are rotated by the rotational driving force of the flexible wire 74. Further, the bearing 73 is screwed to the substrate 76 via a washer 75 having a guide groove 75 a, and the inclination angle of the cutter 71 with respect to the board surface of the stock transporting section 2 is the same as the inclination of the cutter 61 with respect to the scion transporting section 3. Set to the same angle,
When the stem P1 of the rootstock P is cut by the cutter 71, the cutting surface of the stem P1 of the rootstock P and the cutting surface of the stem T1 of the scion T become parallel. The flexible wire 64 of the rotary cutter 6
The flexible wire 74 of the rotary cutter 7 is rotationally driven by the same motor (not shown).

As shown in FIGS. 1 and 2, the upper mount 1
A tube supply unit 8 is provided at a position subsequent to the rotary cutter 7 on the side of the root transportation unit 2 of b (in this example, after two stages),
The tube supply unit 8 supplies the heat-shrinkable tube C from the tube roll 200 to the position of the stock holding unit 4 of the stock transport unit 2.

FIG. 7 is a perspective view showing the tube supply unit 8. The heat-shrinkable tube C from the tube roll 200 is guided to the tube supply pipe 82 along the guide roller 81 and provided below the tube supply pipe 82. The heat-shrinkable tube C is cut by the tube cutter section 85 by being supplied to the perforated section 84 arranged on the back surface of the upper mount 1b by the feeder section 83.

Here, the feeder section 83 is provided with a movable hand 832 that moves up and down by an air cylinder 831 and a fixed hand 833 fixed to the lower part. The movable hand 832 and the fixed hand 833 are supplied from plugs 832a and 833a. Depending on the air that is generated, the claws 832b and 83 are respectively
The opening / closing operation of 3b is performed. Then, the claw 833b of the fixed hand 833 is opened, and the claw 832b of the movable hand 832 is opened.
Movable hand 832 with heat-shrinkable tube C sandwiched between
Is moved downward, and then the claw 83 of the fixed hand 833 is moved.
The heat-shrinkable tube C is sandwiched and fixed by 3b, the claw 832b of the movable hand 832 is opened, and the movable hand 832 is moved upward. By this one-cycle operation, the heat-shrinkable tube C is supplied to the perforated portion 84 by a constant length.

The perforated portion 84 is an air cylinder 84.
The heat-shrinkable tube C passing through the inside is punched with perforations by the punching blade 842 that is reciprocated by 1, and the heat-shrinkable tube C having the perforations is guided to the tube cutter portion 85. The tube cutter 85 cuts the heat-shrinkable tube C with the scissors 851.

As shown in FIG. 2, below the tube supply portion 8, there is provided a tube mounting guide 9 which is moved at a stop position of the rootstock by an air cylinder 9a in a direction perpendicular to the stem of the rootstock. ing. As shown in FIG. 8, the tube mounting guide 9 has a tube guide surface 91 having a semi-cylindrical groove matching the outer diameter of the heat-shrinkable tube C, and a lower end of the tube guide portion 91 of the heat-shrinkable tube C. Semi-circular stem guide surface 9 that is smaller than the outer diameter and matches the outer diameter of the rootstock stem
2 and.

Then, as shown in FIG. 9, the tube mounting guide 9 is moved to the root P1 side of the rootstock by the air cylinder 9a as shown by the arrow in the figure, and the root guide surface 92 is moved to the root P1 of the rootstock. Mated. In this state, the heat-shrinkable tube C supplied from the perforation processing section 84 via the tube cutter section 85 is inserted into the stem P1, and after this insertion, the heat-shrinkable tube C is cut by the tube cutter section 85. To be done. As a result, the heat-shrinkable tube C having a certain length is inserted in the stem P1. When the heat-shrinkable tube C is cut, the tube mounting guide 9 is returned to its original position by the air cylinder 9a as shown by the arrow in FIG.

The tube supply section 8 and the tube mounting guide 9 constitute a tube mounting section. As shown in FIGS. 1 and 2, the tube mounting section is provided for detecting the presence or absence of rootstocks. A pair of optical sensors (first optical sensors) 10 are provided, and the movements of the tube mounting guide 9 and the supply and cutting of the heat-shrinkable tube C are performed only when the rootstock is detected.

As shown in FIGS. 1 and 2, a root biting portion 11 is arranged at a stop position of the root after the tube mounting portion. FIG. 10 is a perspective view of the rootstock holding portion 11, FIG.
1 is a front view thereof, and a positioning block 113 is fixed to the tip ends of a pair of left and right L-shaped arms 112 slidably held by two slide shafts 111.
The mold arm 112 is opened and closed by the left and right air cylinders 114 fixed to the upper mount 1b as shown by arrows in the figure.

FIG. 12 is a perspective view of the positioning block 113, and FIG. 13 is a plan view of the positioning block 113.
V-grooves are formed in the vertical direction on each of the tube 3 and the tube guide surface 1 abutted on the heat-shrinkable tube C by the V-grooves
A stem guide surface 113b that abuts on the stem 13a and the stem P1 is formed. Further, a bowl-shaped recess 113c is formed in the center of the V groove, and a cold air introduction pipe 113d and a hot air introduction pipe 113e are connected to this recess 113c.

When the pair of L-shaped arms 112 are closed, the V groove of the positioning block 113 sandwiches the stem P1 of the rootstock P and the heat-shrinkable tube C, and the stem guide surface 113a and the stem guide surface 113b allow the stem to move. The P1 and the heat-shrinkable tube C are positioned and fixed at fixed positions. Then, in this state, the stem of the scion is inserted into the heat-shrinkable tube C as described later, and as shown in FIG. The cut surfaces of the stem T1 are brought into close contact with each other.

On the other hand, in the gantry 1, a hot air supply unit 12 is arranged in the vicinity of the root block holding unit 11, and the hot air supply unit 12 slides on the movable block 122 by two slide shafts 121. Hold this as possible, this movable block 12
2 is moved by the air cylinder 123 in the direction of the arrow in FIG. The movable block 122 has an air cylinder 12
9, a pair of hot air nozzles 124 (see FIG. 1) and a heater 125 are attached to the air cylinder 129. The air cylinder 129 moves the hot air nozzle 124 and the heater 125 in the direction of the arrow in FIG. The hot air nozzle 124 is moved to the root block 11 by the movement in the arrow direction and the movement in the arrow direction.

Here, as shown in FIG. 15, when the positioning blocks 113 on the left and right of the root block 11 are sandwiching the heat-shrinkable tube C, the hot air is introduced into each positioning block 113. The tubes 113e are arranged in parallel on the front surface, and in this state, the hot air nozzles 124 are sent out from the hot air supply unit 12, and the pair of hot air nozzles 124 are stopped at the positions of the openings of the hot air introduction tubes 113e arranged in parallel. ..

Then, the hot air supplied through the heater 125 is introduced from the hot air nozzle 124 to the hot air introducing pipe 103e, and in the state of FIG. 15, the hot air is blown to the heat shrinkable tube C by the concave portion 113c of the V groove. .. Further, when the supply of hot air is finished, the cold air supplied from the cold air supply unit 14 attached to each positioning block 113 is cooled by the cold air introduction pipe 1.
It is introduced into 13d and the cold air is supplied to the recess 113c.
Further, at the same time when the supply of cold air is started, the air cylinder 1
In the operation of 29, the hot air nozzle 124 has the hot air introduction pipe 113e.
From the position of the opening of the air cylinder 12
By the operation of 3, the hot air nozzle 124 returns to the initial position. When the heat-shrinkable tube C is heated in this way,
The graft of the rootstock and the scion is held by the compressive force of the heat-shrinkable tube C which shrinks, and the heat-shrinkable tube C
Due to the thermal contraction in the axial direction, the contact surfaces of the graft portion are securely connected. And the heat-shrinkable tube C by the cold air
Is cooled to room temperature and the grafting ends.

As shown in FIGS. 1 and 2, the rootstock holding portion 11 is provided with a pair of optical sensors (second optical sensors) 20 for detecting the presence or absence of the rootstock. The above operations are performed only when the rootstock is detected.

In the upper mount 1b, a scion transfer section 13 is arranged near the upper part of the root bite section 11. FIG. 16 is a front view of the scion transfer section 13.
Is moved up and down by a horizontal slide shaft 131.
Slidably held, and air cylinders 133a and 1a
The elevating part 132 is moved horizontally in two steps by 33b. Further, the elevating part 132 includes an air cylinder 132a.
The vertical slide shaft 132b is extended in the up-down direction, and the scoop hand 134 attached to the lower end of the slide shaft 132b is moved up and down.

Then, as shown in FIG.
Due to the horizontal movement of 32 and the vertical movement of the vertical movement unit 132, the scion hand 134 is moved as indicated by the dashed-dotted arrow in FIG. First, in the initial state, it is at the position of the point A, moves to the point B, grasps the scion T, and returns to the point C directly above the positioning block 113 of the rootstock holding section 11. It descends from this point C and stops at the point D, so that the spike is positioned by the positioning block 11
3 is inserted into the heat-shrinkable tube C. Next, the Hogi hand 134 opens the hand, moves backward to the point E, and rises to the original point A.

FIG. 17 is a perspective view of the scion hand 134. The scion hand 134 is provided with claws 134b and 134c which are opened and closed by the air supplied from the plug 134a, and the claws 134b and 134c are provided below the claws 134b and 134c, respectively. Axis 134
The scion holding plates 134f and 134g are attached by d and 134e, respectively.

The claws 134b and 134c and the scion holding plate 134
The V-shaped concave end 13 is provided on the inside of each tip of f and 134g.
4b-1, 134c-1, 134f-1, 134g-1
Is formed, and as shown in FIG. 18, the claws 134b,
By closing 134c, the concave ends 134b-1 and 134c-1 overlap each other and lightly grip the stem T1 of the scion. In addition, at this time, the scrubbing plate 134f, 134g
Similarly, the concave end portions 134f-1 and 134g-1 are overlapped to suppress the blurring of the lower end of the stem T1 of the scion.

The spike holding plates 134f and 134g are urged downward by spring boxes 134h and 134i arranged above the claws 134b and 134c, and the spikes gripped by the spike hand 134 are positioned as described above. When inserting into the heat-shrinkable tube C in the block 113,
The hooki pressing plates 134f and 134g are positioning blocks 1
It is adapted to be pushed by 13 and move toward the claws 134b and 134c.

In the grafting device of this embodiment, the operation of each part is controlled by a sequencer or the like (not shown). FIG. 19 is a flowchart of the main flow of control operation, and FIG.
21 and 21 are flowcharts of the subroutine, and the operation of the apparatus will be described based on each flowchart.

When the rootstock and the spikes are set in the rootstock transport section 2 and the spikestock transport section 3, respectively, and the rotary cutter motor, the motor M, and the heater 125 are turned on, the start switch of the apparatus is turned on. The main flow is started, and in step S1, the scion conveying section 3 and the stock conveying section 2 are rotated by a fixed angle (18 ° in this example).

Next, in step S2, the tube supply process is started, and subsequently, the grafting process is started in step S3.

Next, in step S4, it is determined whether or not the grafting process is completed. If it is completed, the process proceeds to step S5.

In step S5, it is determined whether or not the tube supply process is completed, and if it is completed, the process proceeds to step S6.

At step S6, the start switch is turned ON / O.
If FF is determined and the switch is ON, the operation after step S1 is repeated, and if the switch is OFF, the operation is stopped and terminated.

In the tube supply process of FIG. 20, it is determined in step S10 whether or not the first optical sensor 10 has detected the rootstock, and if the rootstock is not detected, the processing ends. When the rootstock is detected, the tube mounting guide 9 is advanced by the air cylinder 9a to fit the tube mounting guide 9 to the stem of the rootstock in step S11, and the stem of the rootstock is handled by the tube supply unit 8 in step S12. The heat-shrinkable tube C is sent to and the stem of the rootstock is covered with the heat-shrinkable tube C. Next, in step S13, the tube mounting guide 9 is retracted, and in step S14, the tube cutter 85 cuts the heat-shrinkable tube C covered by the stem of the rootstock at a fixed position. Then, the perforations are punched in the heat-shrinkable tube C by the perforation processing section 84, and the tube supply process is ended.

In the grafting process of FIG. 21, it is determined in step S20 whether or not the second optical sensor 20 has detected a rootstock. If no rootstock is detected, the grafting processing ends. If the rootstock is detected, in step S21, the positioning block 113 of the rootstock gripping portion 11 is closed to bite the heat-shrinkable tube C portion of the rootstock stem, and in step S22,
The scion transport unit 3 is operated by the scion hand 134 of the scion transfer unit 13.
And receives the scion from it, and moves to just above the rootstock holding part 11. Next, in step S23, the received scion is lowered to insert the stem of the scion into the heat-shrinkable tube C in the positioning block 113, and in step S24, hot air is blown into the positioning block 113 for a certain time (for example, several seconds). Supply and fasten the graft.

Next, in step S25, the scoop hand 134
To the initial position, cool air is supplied into the positioning block 113 in step S26 to cool the graft portion, and the positioning block 113 is opened in step S27 to release the grafted rootstock and scion and step S28. Proceed to.

In step S28, it is determined whether or not the temporary stop is designated by the ON / OFF state of the temporary stop switch (not shown). If the temporary stop is not designated, the grafting process is terminated. If there is a pause designation, step S29
Then, the operation is stopped and the process proceeds to step S201. Step S
In 201, whether or not restart is specified is monitored by the ON / OFF state of the temporary stop switch, and if the restart is specified, the grafting process is ended.

By the above processing, while the start switch is ON, the rootstock and the scion are sequentially rotated and sent, while the rotary cutters 6 and 7 respectively rotate the rootstock and the scion stem. It is cut diagonally. Then, each time a rootstock is detected at the position of the tube supply unit 8, the stem of the rootstock is covered with the heat-shrinkable tube C, and every time when the rootstock is detected at the position of the rootstock holding unit 11, a graft is attached. Done.

In the above embodiment, the height adjusting plate 41 is used at the position where the root of the root carrier 2 is placed.
For example, when cutting the stem of the rootstock again, by stacking similar height adjusting plates or using a thick height adjusting plate, the once cut stem can have a predetermined height. Further, since the perforations are formed vertically in the heat-shrinkable tube when grafted, the heat-shrinkable tube spontaneously falls off as the plant grows, and the labor of post-treatment can be saved. Furthermore, after covering the stem of the rootstock with a heat-shrinkable tube, the stem and the part of the heat-shrinkable tube are positioned in a biting state, and the stem of the scion is inserted there. You can graft on.

[0047]

As described above, the grafting device of the present invention intermittently conveys a plurality of rootstocks to intermittently convey a plurality of rootstocks and a plurality of spikes above the rootstock conveyor. A scion conveying section, and a root cutter section for cutting the stem of the root at a predetermined angle,
A scion cutter section that cuts the stem of the scion at a predetermined angle, a tube coating section that covers the stem of the stock tree with a heat-shrinkable tube piece at the stop position of the scaffold at the rear stage of the scribing cutter section, and this tube coating section. At the stop position of the rootstock in the latter stage, the rootstock biting part that bites the heat-shrinkable tube piece part of the rootstock of the rootstock at a fixed position, and at the stop position of this rootstock biting part, the scion transport part Remove the scion from the stem and insert the stem of the scion into the heat-shrinkable tube of the scoop of the rootstock. Cover the stem of the scion and the stem of the scion with the scion transfer section and the scoop of the scoop. A hot air supply unit that supplies hot air to the heat-shrinkable tube piece. Then, while the rootstock and the scion are intermittently conveyed by a fixed amount, the stem parts of the rootstock and the scion are cut at a predetermined angle, and the heat-shrinkable tube piece is attached to the rootstock at the tube mounting portion. The stem of the scion is put on the stem, and the stem of the stem of the rootstock is inserted into the heat-shrinkable tube with the portion of the heat-shrinkable tube piece of the stem of the rootstock being bitten at a fixed position by the bite of the rootstock. Further, the heat-shrinkable tube covering the stem of the rootstock and the stem of the scion is heated and shrunk by hot air and preferably cooled to normal temperature by cold air to complete the grafting. Therefore, the scion and the rootstock can be grafted by the heat-shrinkable tube, and the grafting work can be performed efficiently.

[Brief description of drawings]

FIG. 1 is a partially crushed and enlarged plan view of a grafting device according to an embodiment of the present invention.

FIG. 2 is a front view of the grafting device according to the embodiment.

FIG. 3 is a perspective view of a root holding portion in the embodiment.

FIG. 4 is a perspective view of a spike holder according to the embodiment.

FIG. 5 is a diagram showing a rotary cutter on the side of the scion conveying unit in the embodiment.

FIG. 6 is a diagram showing a rotary cutter on the root carrier side in the embodiment.

FIG. 7 is a perspective view of a tube supply unit in the embodiment.

FIG. 8 is a perspective view of a tube mounting guide in the embodiment.

FIG. 9 is a diagram showing a function of a tube mounting guide in the embodiment.

FIG. 10 is a perspective view of a root holding portion in the embodiment.

FIG. 11 is a front view of a root holding portion in the embodiment.

FIG. 12 is a perspective view of a positioning block in the embodiment.

FIG. 13 is a plan view of a positioning block in the example.

FIG. 14 is a diagram showing a close contact state of a stem of a rootstock and a stem of a scion in a heat-shrinkable tube in Example.

FIG. 15 is a diagram showing a state in which the positioning block in the embodiment is closed.

FIG. 16 is a front view of a scion transferring unit according to the embodiment.

FIG. 17 is a perspective view of a scion hand in the embodiment.

FIG. 18 is a diagram showing a state in which the claws of the scion hand in the embodiment are closed.

FIG. 19 is a flowchart of a main flow of control in the embodiment.

FIG. 20 is a flowchart of a tube supply process subroutine in the embodiment.

FIG. 21 is a flowchart of a grafting process subroutine in the embodiment.

[Explanation of symbols]

 2 Root transport section 3 Scion transport section 4 Root holding section 5 Snap holding section 6,7 Rotating cutter 8 Tube supply section 9 Tube mounting guide 11 Root biting section 12 Hot air supply section 13 Scion transfer section

Claims (1)

What is claimed is: 1. A root transport unit for intermittently transporting a plurality of rootstocks, and a spiker transport unit for intermittently transporting a plurality of rootstocks above the root transport unit. A root cutter section for cutting the stem of the root stock conveyed by the root stock transfer section at a predetermined angle above the root stock transfer section, and a rootstock transfer section below the root stock transfer section. A stem cutting unit that cuts the stem of a scion at a predetermined angle, and a tube mounting that attaches a heat-shrinkable tube piece to the stem of the stem at the stopping position at the stopping position of the stem in the latter stage of the above-mentioned cutting cutter unit. Part, a root block biting part for biting the part of the heat-shrinkable tube piece of the root block of the root block at a fixed position at the rear stage of the tube mounting part, and the root block biting part. At the position of the stem, the stem is removed from the stem conveying section, and the stem of the stem is inserted into the heat-shrinkable tube of the stem of the root of the root of the stem. A grafting device comprising: a scion transfer section to be inserted and a hot air supply section for supplying hot air to a heat-shrinkable tube piece covering the stem of the rootstock and the stem of the scion at the root biting section. ..