JP2007124936A - Grafting method and grafting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grafting method and a grafting device each enabling reliable joint of the stalk of a rootstock and the stalk of a scion with sufficient strength. <P>SOLUTION: The grafting device 1 is provided with a workpiece set station 11, a first workpiece cut station 12, a second workpiece cut station 13, a tube fitting station 14, a tube depressing station 15 and a workpiece takeout station 16. At the tube installation station 14, a C-shape cross-sectional tube 43 is fitted to a rootstock 7 and a scion 9 whose respective stalks are in contact with each other in a coaxial condition. In the tube depressing station 15, depressing power acting so as to narrow the space of the clearance part of the C-shape cross-sectional surface tube 43 is added to the C-shape cross-sectional tube 43 to cause plastic deformation on the C-shape cross-sectional tube 43 so that the inner peripheral surface of the C-shape cross-sectional tube 43 and the stalks of the rootstock 7 and the scion 9 are closely contact to one another. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a grafting method and grafting apparatus for grafting a rootstock and a hogi coaxially.

  In recent years, in the cultivation of plants such as fruits and vegetables, grafted seedlings obtained by grafting rootstock and hogi coaxially have been widely used. When manufacturing such grafted seedlings, it is necessary that the stems of the rootstock and the stems of the scion be brought into contact with each other in a coaxial manner and then combined with each other. Conventionally, adhesive tapes, scissor clips, adhesives, sticks, and the like are used as the coupling means for coupling the stems of the rootstock and the stems of the scion.

However, these conventional coupling means have a problem that the coupling strength between the rootstock stem and the stem of the spikelet cannot be obtained sufficiently. Therefore, by using tubes or pipes as coupling means, the stems of the rootstock and the stems of the panicles are inserted into the holes of the tube from the ends opposite to each other, respectively. A grafting method or a grafting apparatus has been proposed in which a stem is bonded with sufficient strength (see, for example, Patent Documents 1 to 4).
JP-A-5-30856 (paragraph [0025], FIG. 14) Japanese Patent Laid-Open No. 9-107795 (paragraph [0007], FIG. 1) Japanese Patent Laid-Open No. 9-127777 (paragraph [0013], FIG. 2) Japanese Patent Laid-Open No. 11-168974 (paragraph [0019], FIG. 3)

  However, for example, in the conventional grafting method or grafting device disclosed in Patent Documents 1 to 4 using tubes or pipes as coupling means, the insertion of rootstocks and spikelets into the tube holes may fail. There are many problems such as low yield. There is also a problem that the rootstock or stalk stem may come out of the tube after joining.

  The present invention has been made to solve the above-described conventional problems, and provides a grafting method or grafting apparatus that can reliably bond a stem of a rootstock and a stem of a scion with sufficient strength. This is a problem to be solved.

  A grafting method for grafting a rootstock and a hogi coaxially according to the present invention, which has been made to solve the above-mentioned problems, combines (fixes) the rootstock and the hogi in the following procedure. That is, first, it is formed into a tubular shape with an elastically deformable material, and is provided with a clearance portion (split portion) extending in the tube longitudinal direction from one end to the other end in the tube longitudinal direction, and has a substantially C-shaped cross section. The tubular member is arranged so that the stems are parallel to the rootstock and the hogi (stem) in which the stems are in coaxial contact. Next, the tubular member is elastically deformed by applying an external force acting on the tubular member so as to increase the interval (width) of the clearance portion. Furthermore, the tubular member is moved in an elastically deformed state toward the rootstock and the hogi (maintaining a parallel state) until the stem and the stem of the hogi are accommodated in the tubular member through the clearance portion. . Thereafter, the external force is removed to return the tubular member to a state where it is not elastically deformed, and the inner peripheral surface of the tubular member is brought into contact with the rootstock and the stem of the hogi, thereby joining the rootstock and the hogi to each other. Let

  In the grafting method according to the present invention, after the inner peripheral surface of the tubular member is brought into contact with the stems of the rootstock and the hogi, the tubular member is subjected to a pressing force that acts so as to reduce the interval between the clearance portions. Preferably, the member is plastically deformed to bring the inner peripheral surface of the tubular member into close contact with the rootstock and stalk stem.

  Further, the grafting device for grafting the rootstock and the hogi coaxially according to the present invention is formed in a tubular shape with an elastically deformable material and extends in the longitudinal direction of the tube from one end to the other end in the longitudinal direction of the tube. A tubular member mounting portion for mounting a tubular member having a substantially C-shaped cross section provided with a clearance portion on stems and stems of stems in which the stems are in coaxial contact with each other; and a tubular member mounting portion A tubular member supply section for supplying the tubular member. Here, the tubular member mounting portion joins the rootstock and the hogi by the following operation. That is, first, the tubular member is held so as to be parallel to the rootstock and the stem of the hogi. Next, the tubular member is elastically deformed by applying an external force acting on the tubular member so as to widen the interval between the clearance portions. Then, the tubular member is moved toward the rootstock and the hogi until elastically deformed until the rootstock and the stem of the hogi are accommodated in the tubular member through the clearance portion. Furthermore, the external force is removed, the tubular member is returned to a state where it is not elastically deformed, and the inner peripheral surface of the tubular member is brought into contact with the rootstock and the stem of the hogi, thereby joining the rootstock and the hogi to each other. .

  The grafting device according to the present invention applies a pressing force acting on the tubular member so that the interval between the clearance portions is narrowed after the tubular member is attached to the rootstock and the stem of the scion by the tubular member attaching portion. It is preferable to include a tubular member pressing portion that plastically deforms the inner peripheral surface of the tubular member and the stems of the rootstock and the hogi.

  According to the grafting method or grafting apparatus according to the present invention, the stem of the rootstock and the stem of the scion can be reliably combined with sufficient strength. Further, in the grafting method or grafting apparatus according to the present invention, after the inner peripheral surface of the tubular member is brought into contact with the rootstock and the stem of the scion, a pressing force acting so as to narrow the clearance interval is applied to the tubular member. In addition, if the tubular member is plastically deformed so that the inner peripheral surface of the tubular member and the rootstock and the stalk of the stalk are brought into close contact with each other, the bond strength between the stalk and the stalk of the rootstock is increased. It is possible to reliably prevent the stem of the rootstock or the stem of the scion from falling out of the tubular member.

Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings.
As shown in FIGS. 1 to 3, the grafting apparatus 1 according to the present invention is provided with an index table 2. Each of the index tables 2 includes a rotary table 3, a chuck opening / closing cam 4, and a chuck lifting / lowering cam 5 that are substantially circular in a plan view. A plurality (six sets) of chuck sets 6 are arranged on the turntable 3 so as to be spaced apart from each other by a fixed angle (60 °) at the central angle in the circumferential direction. Each chuck set 6 includes a rootstock chuck 8 that can put the rootstock 7 into an unclamped state or a clamped state by opening and closing, and a hogi chuck 10 that can put the headwood 9 into an unclamped state or clamped state by opening and closing. And have. Here, the vertical position (height) of the rootstock chuck 8 is constant, but the hogi chuck 10 can be displaced in the vertical direction.

  The turntable 3 rotates intermittently by a constant angle (60 °) at regular intervals in the direction indicated by the arrow A1 (counterclockwise when viewed from above). The chuck opening / closing cam 4 has a large-diameter cam surface 4a that engages with each chuck set 6 to open the rootstock chuck 8 and the hogi chuck 10, and a small-diameter cam surface 4b that closes. . The chuck raising / lowering cam 5 has an upper cam surface 5a for engaging with the hogi chuck 10 to position the hogi chuck 10 at the upper position, and a lower cam surface 5b for positioning at the lower position (see FIG. 6).

  Around the index table 2, the work set station 11, the first work cut station 12, and the second work cut station 13 are sequentially separated by a fixed angle (60 °) as the central angle in the rotation table rotation direction. A tube attachment station 14, a tube pressing station 15, and a workpiece removal station 16. Each of these stations 11 to 16 is disposed at a position corresponding to or engaging any one of the chuck sets 6 when the rotary table is stopped.

  At the work set station 11, as will be described in detail later, the rootstock 7 and the hogi 9 are automatically set on the rootstock chuck 8 and the hogi chuck 10, respectively. In addition, when set in this way, the upper end part of the rootstock 7 and the lower end part of the scion 9 are separated moderately.

  In the first work cutting station 12 or the second work cutting station 13, the stem of the rootstock 7 and the stem of the scion 9 are cut (cut) so as to be in a shape in which both can contact coaxially. Here, when the upper end portion of the rootstock 7 and the lower end portion of the hogi 9 are obliquely cut at the same inclination angle, the rootstock 7 and the hogi 9 are brought into contact with each other between the inclined surfaces. (See FIG. 11 (a)), the root work / hogi diagonal cutting device 40 (see FIG. 11) that simultaneously cuts the vicinity of the upper end portion of the rootstock 7 and the lower end portion of the hogi 9 at the first work cut station 12 at the same time. 9). In this case, the second work cutting station 13 is not provided with a cutting device.

  In addition, the upper end portion of the rootstock 7 is cut into a V shape (V-shaped valley shape), while the lower end portion of the hogi 9 is cut into a V shape (wedge shape). And V-shaped surfaces are brought into contact with each other (see FIG. 11 (b)), the first work cutting station 12 is cut into a V-shaped (wedge-shaped) Hogi V-cut only near the lower end of the hogi 9. A device 41 (see FIG. 10A) is provided. The second work cutting station 13 is provided with a rootstock V-cut device 42 (see FIG. 10B) that cuts only the vicinity of the upper end of the rootstock 7 into a V shape (V-shaped valley shape).

  At the tube attachment station 14, a C-shaped cross-section tube 43 (tubular member) is attached to the rootstock 7 and the hogi 9 whose stems are in coaxial contact. The C-shaped cross-section tube 43 is formed in a tubular shape with an elastically deformable material, for example, synthetic resin (plastic), metal (for example, aluminum), and extends in the tube longitudinal direction from one end to the other end in the tube longitudinal direction. 43a (tube wall defect | deletion part or back split part) is provided, and it has a substantially C-shaped cross section (refer FIG.12 (b)).

  In the tube pressing station 15, the C-shaped cross-section tube 43 is plastically deformed by applying a pressing force acting on the C-shaped cross-section tube 43 so that the clearance between the clearance portions is narrowed. The inner peripheral surface of 43 and the stems of the rootstock 7 and the hogi 9 are brought into close contact with each other. Thus, the rootstock 7 and the hogi 9 are firmly bonded to each other by the C-shaped cross-section tube 43 to become a grafted seedling.

  At the workpiece removal station 16, grafted seedlings are removed. In addition, in each station 11-16, each said process with respect to the rootstock 7, the hotwood 9, or a graft seedling is performed substantially simultaneously at the time of a rotary table stop.

  Hereinafter, the structure and function of the index table 2 will be described in detail. In the substantially disk-shaped rotary table 3 constituting the index table 2, chuck sets 6 each having a rootstock chuck 8 and a hogi chuck 10 are separated from each other by 60 ° at the central angle in the circumferential direction of the rotary table. 6 sets are arranged. Here, the rootstock chuck 8 is disposed on the lower side, and the hogi chuck 10 is disposed on the upper side. However, in plan view, both are disposed at substantially overlapping positions. Under each rootstock chuck 8, a tray 18 for receiving soil that falls off the rootstock 7 is provided.

  The turntable 3 is controlled by a control device (not shown) and rotates intermittently in the direction of arrow A1 (counterclockwise) in FIG. The number of chuck sets 6 is not limited to six, and may be seven or more (for example, eight). However, when the number of chuck sets 6 is seven or more, the center The angle and the rotation angle are not 60 °, but are values obtained by dividing 360 ° by the number of chuck sets (for example, 45 ° in the case of eight).

  Here, the rotation phase of the rotary table 3 is controlled so that any chuck set 6 is positioned on the front face F when the rotary table is stopped. Accordingly, when the rotary table is stopped, one of the chuck sets 6 is located at a position separated by 60 ° from the front face F by a central angle as viewed in the circumferential direction of the rotary table. Hereinafter, the front F is referred to as a first stop position, and positions spaced 60 degrees counterclockwise from the front F (first stop position) when viewed in the circumferential direction of the rotary table are sequentially designated as a second stop position, Third stop position: referred to as a sixth stop position.

  And in this grafting apparatus 1, in the site | part corresponding to the 1st-6th stop position, the work set station 11, the 1st work cut station 12, the 2nd work cut station 13, and the tube attachment station 14, respectively. A tube pressing station 15 and a workpiece take-out station 16 are disposed.

  The hogi chuck 10 includes a cam follower 10a that contacts the cam surface of the chuck opening / closing cam 4, a pair of gear sets 10b, and a pair of arm sets 10c. The chuck opening / closing cam 4 is formed with a large-diameter cam surface 4a and a small-diameter cam surface 4b, and both cam surfaces 4a and 4b are smoothly provided at a connecting portion between the large-diameter cam surface 4a and the small-diameter cam surface 4b. A transition cam surface 4c for connection is formed. Here, the chuck opening / closing cam 4 opens the arm set 10c when the large-diameter cam surface 4a contacts the cam follower 10a (unclamped state), and closes the arm set 10c when the small-diameter cam surface 4b contacts the cam follower 10a. (Clamped state). In addition, since the opening / closing mechanism of the rootstock chuck 8 is the same as that of the hogi chuck 10, the description thereof is omitted.

  Further, the hogi chuck 10 includes a cam follower 10 d that comes into contact with the cam surface of the chuck lifting cam 5. As shown in FIG. 6, the chuck elevating cam 5 is formed with an upper cam surface 5a having a high height from the bottom surface and a lower cam surface 5b having a lower height, and the upper cam surface 5a and the lower cam surface 5b. A transition cam surface 5c for smoothly connecting both cam surfaces 5a and 5b is formed at the connecting portion. Here, the chuck raising / lowering cam 5 is configured such that when the upper cam surface 5a comes into contact with the cam follower 10d, the hogi chuck 10 is positioned at the upper position (while the rootstock 7 and the hogi 9 are separated), the lower cam When the surface 5b comes into contact with the cam follower 10d, the hotwood chuck 10 is positioned at the lower position (the rootstock 7 and the hotwood 9 come into contact).

Hereinafter, the structure and operation of the chuck opening / closing cam 4 and the chuck raising / lowering cam 5 for controlling the operation of the chuck set 6 (the rootstock chuck 8 and the hogi chuck 10) will be described.
As shown in FIGS. 4 and 5, the chuck opening / closing cam 4 does not rotate, but can rotate between the front side position and the rear side position around the center of the rotary table as viewed in the rotary table rotation direction. It is like that. The chuck opening / closing cam 4 is located at the rear position in FIG. 4, and is located at the front position in FIG. As is apparent from FIG. 4, when the chuck opening / closing cam 4 is located at the rear side position, only the chuck set 6 located at the workpiece take-out station 16 is opened, and the other chuck sets 6 are closed. . Further, as apparent from FIG. 5, when the chuck opening / closing cam 4 is located at the front side position, only the chuck set 6 located at the work set station 11 is opened, and the other chuck sets 6 are closed. Become.

  As shown in FIG. 6, the chuck raising / lowering cam 5 is a fixed cam that does not rotate and does not rotate. The chuck raising / lowering cam 5 includes an upper cam surface 5a from the slightly rear position of the portion corresponding to the work set station 11 to the slightly front position of the portion corresponding to the second work cutting station 13 when viewed in the circumferential direction of the rotary table. It is formed as follows. Accordingly, the chuck raising / lowering cam 5 is arranged in the upper position at the work setting station 11 and the two work cutting stations 12 and 13, and at the other stations 14 to 16, the hogi chuck 10 is at the lower position. Deploy.

Hereinafter, the configuration and function of each of the stations 11 to 16 will be described.
Again, as shown in FIG. 1, the work set station 11 includes a rootstock setting unit 21 for setting the rootstock 7 on the rootstock chuck 8, and a hogi setting unit 22 for setting the earstock 9 on the hogi chuck 10. And the cutting blade 23 (circular 1 blade) which cuts the unnecessary part of the rootstock 7 and the hogi 9, ie, the upper part of the rootstock 7, and the lower part of the hogi 9, is provided.

  The rootstock set unit 21 includes a rootstock input chuck 24 that can reciprocate in the direction of arrow A2. When the rootstock 7 is set on the rootstock chuck 8, at the front side (opposite side of the rootstock chuck 8), the rootstock 7 is first manually used by using a push button switch, an air sensor, a photoelectric sensor, or the like. Is chucked by the rootstock input chuck 24. The rootstock 7 is carried into the rootstock set unit 21 by the rootstock supply conveyor 25.

  Thereafter, the rootstock input chuck 24 moves toward the rootstock chuck 8. On the way, the upper part (unnecessary part) of the rootstock 7 is cut by the cutting blade 23. Then, the rootstock input chuck 24 sets the rootstock 7 on the rootstock chuck 8 in the open state (unclamped state). Next, by rotation of the chuck opening / closing cam 4, the rootstock chuck 8 is closed, and the rootstock 7 is clamped by the rootstock chuck 8. Thereafter, the rootstock input chuck 24 unchucks the rootstock 7 and returns to the original position. Thus, the rootstock 7 is clamped (set) to the rootstock chuck 8.

  The hogi setting unit 22 includes a hogi insertion chuck 26 that can reciprocate in the direction of arrow A3. When the hogi 9 is set on the hogi chuck 10, the hand is first hand-operated (on the side opposite to the hogi wood chuck 10) using a push button switch, air sensor, photoelectric sensor, etc. 9 is chucked by the Hogi throwing chuck 26. The hogi 9 is carried into the hogi setting unit 22 by the hogi supply conveyor 27.

  Thereafter, the hogi charging chuck 26 moves toward the hogi chuck 10. On the way, the lower part (unnecessary part) of the hogi 9 is cut off by the cutting blade 23. Then, the hogi throwing chuck 26 sets the hogi 9 on the hogi chuck 10 in the open state (unclamped state). Next, with the rotation of the chuck opening / closing cam 4, the hotwood chuck 10 is closed, and the hotwood 9 is clamped by the hotwood chuck 10. Thereafter, the hogi charging chuck 26 unchucks the hogi 9 and returns to the original position. Thus, the hogi 9 is clamped (set) to the hogi chuck 10. Note that the setting of the rootstock 7 to the rootstock chuck 8 and the setting of the hogi 9 to the hogi chuck 10 may be completely automated or may be performed manually.

  In this index table 2, since the root chuck chuck 8 and the hogi chuck 10 are simultaneously opened and closed by one chuck opening / closing cam 4, the setting of the rootstock 7 and the setting of the hogi 9 are performed at substantially the same timing. However, a chuck opening / closing cam may be provided for each of the rootstock chuck 8 and the hogi chuck 10, and the setting of the rootstock 7 and the setting of the hogi 9 may be performed at different timings.

  As shown in FIGS. 7A, 7B, and 8, the hogi chuck 10 includes a first claw portion 30a, a second claw portion 30b, and a third claw portion 30c, and V of the second claw portion 30b. The hogi 9 arranged in the letter-shaped notch 30d is clamped. On the other hand, the rootstock chuck 8 includes the first claw portion 31a, the second claw portion 31b, and the third claw portion 31c. The rootstock chuck 8 is configured to remove the rootstock 7 disposed in the V-shaped cutout portion 31d of the second claw portion 31b. Clamp. In this way, the hogi 9 is clamped by the three claw portions 30a, 30b, and 30c, and the rootstock 7 is clamped by the three claw portions 31a, 31b, and 31c. This is so that the axis is correctly oriented in the vertical direction. In this case, the hogi 9 and the rootstock 7 are positioned (positioned) in a planar manner by the first claw portions 30a and 31a and the second claw portions 30b and 31b, respectively, and vertically by the third claw portions 30c and 31c. Sex is secured.

  FIG. 9 is a diagram in which the vicinity of the upper end portion of the rootstock 7 and the vicinity of the lower end portion of the hogi 9 are cut obliquely at the same inclination angle, and then the rootstock 7 and the hogi 9 are brought into contact with each other between the inclined surfaces. In the case of performing (oblique cutting method), the configuration of the rootstock / hogi oblique cutting device 40 provided in the first work cutting station 12 is schematically shown. As shown in FIG. 9, the rootstock / hogi diagonal cutting device 40 includes a two-blade cutter 45 having a thin upper blade 45a and a lower blade 45b which are inclined downward and arranged in parallel with each other, A clamper 46 that clamps the stem of the tree 7 and the stem of the hogi 9 is provided.

  The clamper 46 includes an upper slit 46a and a lower slit 46b that are inclined in the same inclination angle as the upper blade 45a and the lower blade 45b, respectively, and are arranged in parallel to each other. Here, the upper slit 46 a is formed so as to be positioned near the lower end portion of the stem of the hogi 9, and the lower slit 46 b is formed so as to be positioned near the upper end portion of the stem of the rootstock 7. The upper slit 46a and the lower slit 46b can insert the upper blade 45a and the lower blade 45b, respectively. When the diameter of the stem of the rootstock 7 and the diameter of the stem of the spikelet 9 are greatly different, the clamper 46 may be divided into a clamper for the rootstock and a clamper for the spikelet. Further, the upper blade 45a and the lower blade 45b may be operated independently of each other.

  Thus, by moving the cutter 45 in the direction indicated by the arrow A4 and inserting the upper blade 45a and the lower blade 45b into the upper slit 46a and the lower slit 46b, respectively, as shown in FIG. 7 and the vicinity of the lower end of the hogi 9 can be cut obliquely at the same inclination angle. As described above, in this case, the second work cutting station 13 is not provided with a cutting device.

  10 (a) and 10 (b), respectively, the vicinity of the upper end of the rootstock 7 is cut into a V shape (V-shaped valley), while the vicinity of the lower end of the hogi 9 is V-shaped (wedge shape). The bases provided in the first work cutting station 12 and the second work cutting station 13 when the rootstock 7 and the hotwood 9 are brought into contact with each other at the V-shaped surfaces (V-cut method). The structure of the tree V cut apparatus 41 and the hogi V cut apparatus 42 is shown typically.

  As shown in FIG. 10 (a), the hogi V-cut device 41 includes a cutter 47 having a thin left blade 47a and a right blade 47b, which are inclined downward from the left and right opposite directions, and a stem of the hogi 9. And a clamper 48 for clamping the. The clamper 48 includes a left-side slit 48a and a right-side slit 48b that are arranged to be inclined at the same inclination angle as that of the left blade 47a and the right blade 47b from opposite directions. Here, both the slits 48a and 48b are formed so as to be located in the vicinity of the lower end of the stem of the hogi 9. The left slit 48a and the right slit 48b can insert the left blade 47a and the right blade 47b, respectively. Thus, by inserting the left blade 47a and the right blade 47b into the left slit 48a and the right slit 48b, respectively, as shown in the upper half of FIG. 11B, the vicinity of the lower end portion of the hogi 9 is V-shaped (wedge). Shape).

  As shown in FIG. 10 (b), the rootstock V-cut device 42 includes a cutter 49 having a thin left blade 49a and a right blade 49b, which are inclined downward from the left and right opposite directions, and the rootstock 7 respectively. And a clamper 50 for clamping the stalk. The clamper 50 includes a left-side slit 50a and a right-side slit 50b that are arranged to be inclined at the same inclination angle as the left blade 49a and the right blade 49b from opposite directions. Here, both the slits 50 a and 50 b are formed so as to be located near the upper end of the stem of the rootstock 7. The left slit 50a and the right slit 50b can be inserted with a left blade 49a and a right blade 49b, respectively. Thus, by inserting the left blade 49a and the right blade 49b into the left slit 50a and the right slit 50b, respectively, as shown in the lower half of FIG. 11B, the vicinity of the upper end of the rootstock 7 is V-shaped (V Can be cut into a shape

  As shown to Fig.12 (a), the C-shaped cross-section tube 43 is attached to the tube attachment station 14 (refer FIG. 1) to the rootstock 7 and the stalk 9 which stems contact | abutted coaxially (attachment). ) A tube mounting device 51 is provided. In the tube mounting device 51, a continuous tube 53 having a C-shaped cross section wound around a tube reel 52 is supplied to a tube mounting head 55 by a tube supply roller 54. Here, the continuous tube 53 is radially expanded (that is, expanded) by the tube expansion portion 56 before being supplied to the tube mounting head 55. Although not shown in detail, the tube expansion portion 56 is expanded by passing the continuous tube 53 while surrounding a mandrel having a gradually increasing diameter toward the lower side.

  After the continuous tube 53 is supplied to the tube mounting head 55, the continuous tube 53 is cut in the tube radial direction by the tube cutter 57 at a position immediately before the tube mounting head 55. Thereby, the continuous tube 53 already supplied to the tube mounting head 55 becomes a short C-shaped cross-section tube 43 corresponding to the lengths of the stems of the rootstock 7 and the hogi 9. FIG. 12B shows a cross section of a C-shaped cross-section tube 43 provided with a clearance portion 43a. The tube mounting head 55 holds the C-shaped cross-section tube 43 so as to be parallel to the stems of the rootstock 7 and the hogi 9 that are in coaxial contact (that is, vertically).

  Thus, the tube mounting head 55 moves from the position where the continuous tube 53 is supplied from the tube mounting device 51 (hereinafter referred to as “tube supply position”) in the direction indicated by the arrow A5, as will be described in detail later. The C-shaped cross-section tube 43 that is held is attached (attached) to the stems of the rootstock 7 and the hogi 9 that are in contact with each other coaxially. The tube attachment head 55 moves backward to the tube supply position after attaching the C-shaped cross-section tube 43. Then, the tube supply roller 54 sends the continuous tube 53 to the tube mounting head 55 by a length corresponding to the C-shaped cross-section tube 43. Such an operation is repeated, and the C-shaped cross-section tube 43 is attached to the stems of the rootstock 7 and the hogi 9 one after another.

  Hereinafter, the attachment operation of the C-shaped cross-section tube 43 to the stems of the rootstock 7 and the hogi 9 in the tube attachment head 55 will be described with reference to FIGS. As shown in FIGS. 13A to 13C, the tube mounting head 55 rotates with the tube contact portion 60 that contacts the back surface (the surface facing away from the clearance portion 43 a) of the C-shaped cross-section tube 43. A pair of tube fingers 63 and 64 that can be rotated around shafts 61 and 62 are provided.

  When the tube mounting head 55 is located at the tube supply position, as shown in FIG. 13A, the tube contact portion 60 contacts the back surface of the C-shaped cross-section tube 43 (or the continuous tube 53), and both tubes The fingers 63 and 64 are engaged with the clearance 43 or the edge of the tube wall. At this time, the tube fingers 63 and 64 slightly widen the clearance 43a, and slightly expand the C-shaped cross-section tube 43 (or the continuous tube 53). The continuous tube 53 is cut by the tube cutter 57 before this, but it may be performed after this.

  Next, as shown in FIG. 13B, the tube fingers 63 and 64 are rotated around the rotation shafts 61 and 62 so as to be spread to the middle. Thereby, both the tube fingers 63 and 64 widen the space | interval of the clearance part 43a, and expand the C-shaped cross-section tube 43 (or continuous tube 53) significantly by elastic deformation. In this state, the tube mounting head 55 moves toward the rootstock 7 and the hogi 9 (see FIG. 12A). As a result, if the position of the tube mounting head 55 is fixed and considered relatively, the stems of the rootstock 7 and the hogi 9 are accommodated in the C-shaped cross-section tube 43 through the clearance portion 43a having an increased interval, It abuts against the inner peripheral surface of the C-shaped cross-section tube 43 (the rootstock 7 and the hogi 9 do not move).

  Thereafter, as shown in FIG. 13C, the tube fingers 63 and 64 are further rotated around the rotation shafts 61 and 62 so as to be largely expanded. As a result, the tube fingers 63 and 64 are disengaged from the clearance 43 or the edge of the tube wall and the engagement is released, so that no external force acts on the C-shaped cross-section tube 43. As a result, the C-shaped cross-section tube 43 returns to a state where it is not elastically deformed, and the inner peripheral surface of the C-shaped cross-section tube 43 contacts the stems of the rootstock 7 and the hogi 9. That is, the C-shaped cross-section tube 43 is attached (attached) to the stems of the rootstock 7 and the hogi 9, and the rootstock 7 and the hogi 9 are coupled (fixed) to each other via the C-shaped cross-section tube 43. At this time, the inner peripheral surface of the C-shaped cross-section tube 43 and the stems of the rootstock 7 and the hogi 9 may be partially separated.

  As shown in FIGS. 14 (a) and 14 (b), the tube pressing station 15 (see FIG. 1) is applied with a pressing force that acts to narrow the clearance 43a of the C-shaped cross-section tube 43. In addition to 43, a tube pressing device 66 is provided for plastically deforming the C-shaped cross-section tube 43 and bringing the inner peripheral surface of the C-shaped cross-section tube 43 into close contact with the stems of the rootstock 7 and the hogi 9. . The tube pressing device 66 includes a contact member 67 that contacts the back surface of the C-shaped cross-section tube 43, a punch 68 that contacts the stems of the rootstock 7 and the hogi 9, and the C-shaped cross-section tube 43 pressed from opposite directions. And a pair of pressing members 69 and 70 that are plastically deformed by applying pressure.

  When the C-shaped cross-section tube 43 is brought into close contact with the stems of the rootstock 7 and the hogi 9 by the tube pressing device 66, first, as shown in FIG. The back surface of 43 is fixed (supported), and the stems of rootstock 7 and hogi 9 are fixed (supported) with punch 68. Next, as shown in FIG. 14B, the C-shaped cross-section tube 43 is pressed from the opposite direction by a pair of pressing members 69 and 70. As a result, the C-shaped cross-section tube 43 is pressed and contracted by the plastic deformation so that the interval between the clearance portions 43a is narrowed. Thereby, the inner peripheral surface of the C-shaped cross-section tube 43 and the stems of the rootstock 7 and the hogi 9 are in close contact with each other, and the rootstock 7 and the hogi 9 are firmly bonded to each other by the C-shaped cross-section tube 43. It is made a grafted seedling.

  Again, as shown in FIG. 1, the workpiece take-out station 16 is provided with a workpiece take-out device 36 that takes out the grafted seedling formed by joining the rootstock 7 and the hogi 9 from the chuck set 6. The workpiece take-out device 36 first chucks the graft seedlings clamped by the rootstock chuck 8 and the hogi chuck 10 with the take-out chuck 37.

  Thereafter, by rotation of the chuck opening / closing cam 4, the rootstock chuck 8 and the hogi chuck 10 are opened, and the grafted seedlings are released from the clamping state by the chuck set 6 and are only chucked by the take-out chuck 37. . Thereafter, the take-out chuck 37 rotates in the direction of the arrow A6, takes the grafted seedlings onto the take-out conveyor 38 (belt conveyor or chain conveyor), and releases the chuck. Thus, the grafted seedling is carried out from the grafting apparatus 1. The grafted seedlings taken out are stocked at a predetermined place. In addition, you may make it return the grafted seedling carried out directly to the seedling raising tray.

  Thus, according to the grafting apparatus 1 or the grafting method using the grafting apparatus 1, the stem of the rootstock 7 and the stem of the scion 9 can be reliably combined with sufficient strength. Further, since the inner peripheral surface of the C-shaped cross-section tube 43 and the stems of the rootstock 7 and the hogi 9 are brought into close contact with each other, the bonding strength between the stem of the rootstock 7 and the stem of the hogi 9 can be further increased. Further, it is possible to reliably prevent the stem of the rootstock 7 or the stem of the hogi 9 from coming out of the C-shaped cross-section tube 43.

It is a typical top view of the grafting device concerning the present invention. It is a typical top view of an index table. FIG. 3 is a schematic elevational sectional view of the index table shown in FIG. 2. It is a schematic plan view of a rotary table provided with a chuck set and a chuck opening / closing cam at a rear position. It is a schematic plan view of the rotary table provided with the chuck set and the chuck opening / closing cam at the front side position. It is a perspective view of a chuck raising / lowering cam. (A) is a top view of the nail | claw part of a Hogi chuck | zipper, (b) is a top view of the nail | claw part of a rootstock chuck | zipper. It is an elevational sectional view of the nail | claw part which clamped the rootstock and the hogi. It is a typical elevation of a rootstock / Hogi diagonal cutting device. (A) is a schematic elevation view of the Hogi V-cut device, and (b) is a schematic elevation view of the rootstock V-cut device. (A) is an elevation view of a rootstock and a hogi with stems cut obliquely by the rootstock / hogi diagonal cutting device shown in FIG. 9, and (b) is an elevation view of FIGS. 10 (a) and 10 (b). It is an elevation view of a rootstock and a hogi with stems cut into a V shape by the Hogi V-cut device and rootstock V-cut device shown. (A) is a schematic elevational view of the tube mounting device, and (b) is a transverse sectional view of a C-shaped cross-section tube. (A)-(c) is a typical top view of a tube attachment head. (A), (b) is a typical top view of a tube pressing device.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Grafting apparatus, 2 Index table, 3 Rotation table, 4 Chuck opening / closing cam, 4a Large diameter cam surface, 4b Small diameter cam surface, 4c Transition cam surface, 5 Chuck raising / lowering cam, 5a Upper cam surface, 5b Lower cam surface, 5c Transient Cam surface, 6 chuck set, 7 rootstock, 8 rootstock chuck, 9 Hogi, 10 Hogi chuck, 11 work set station, 12 first work cut station, 13 second work cut station, 14 tube mounting station, 15 Tube pressing station, 16 workpiece removal station, 18 tray, 21 rootstock set section, 22 hogi set section, 23 cutting blade, 24 rootstock input chuck, 25 rootstock supply conveyor, 26 hogi input chuck, 27 hogi supply Combe 30a 1st claw part, 30b 2nd claw part, 30c 3rd claw part, 30d cutout part, 31a 1st claw part, 31b 2nd claw part, 31c 3rd claw part, 31d cutout part, 36 Work picking device 37, take-out chuck, 38 take-out conveyor, 40 rootstock / hogi diagonal cut device, 41 hogi V-cut device, 42 rootstock V-cut device, 43 C-shaped cross-section tube, 43a clearance section, 51 tube mounting device, 53 continuous Tube, 55 Tube mounting head, 66 Tube pressing device.

Claims (4)

A grafting method for grafting rootstock and hogi coaxially,
A tubular member formed of an elastically deformable material and having a substantially C-shaped cross section with a clearance portion extending in the tube longitudinal direction from one end to the other end in the tube longitudinal direction. Arranged so as to be parallel to the rootstock and hogi that are in contact with the coaxial,
Applying an external force acting on the tubular member to widen the gap between the clearance portions to elastically deform the tubular member;
In a state of elastic deformation, the tubular member is moved toward the rootstock and the hogi until the rootstock and the stem of the hogi are accommodated in the tubular member through the clearance portion,
The external force is removed to return the tubular member to a state where it is not elastically deformed, and the inner peripheral surface of the tubular member is brought into contact with the rootstock and the stem of the hogi to bond the rootstock and the hogi to each other. The grafting method characterized.   After the inner peripheral surface of the tubular member is brought into contact with the stems of the rootstock and the hogi, a pressing force that acts so as to reduce the interval between the clearance portions is applied to the tubular member to plastically deform the tubular member. The grafting method according to claim 1, wherein the inner peripheral surface is closely contacted with rootstocks and stems of hogi. A grafting device for grafting rootstock and hogi coaxially,
A tubular member made of an elastically deformable material and formed into a tubular shape and provided with a clearance portion extending in the longitudinal direction of the tube from one end to the other end in the longitudinal direction of the tube. A tubular member mounting portion to be attached to the rootstock and hogi that are in contact with each other;
A tubular member supply part for supplying the tubular member to the tubular member mounting part,
The tubular member mounting portion holds the tubular member so as to be parallel to the rootstock and the hogi, and applies an external force acting on the tubular member to widen the gap between the clearance portions to elastically deform the tubular member, thereby elastically deforming the tubular member. In this state, the tubular member is moved toward the rootstock and hogi until the rootstock and the stem of the hogi are accommodated in the tubular member through the clearance, and the external force is removed to elastically deform the tubular member. A grafting device characterized in that it returns to a state where it is not in contact with the inner peripheral surface of the tubular member against the rootstock and the stem of the hogi and connects the rootstock and the hogi to each other.   After the tubular member is attached to the rootstock and the stem of the scion by the tubular member attaching portion, the tubular member is plastically deformed by applying a pressing force acting on the tubular member so as to reduce the interval between the clearance portions. The grafting device according to claim 3, further comprising a tubular member pressing portion that closely contacts the inner peripheral surface with the rootstock and the stem of the hogi.

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