JPH104792A - Seedling root cutting machine - Google Patents

Abstract

(57) [Problem] To provide a root cutting machine capable of driving and cutting the roots of a mat-shaped seedling while using a conventional seedling raising box. SOLUTION: A lifting device 5 for forcibly lifting and turning one end of a mat-shaped seedling W grown in a seedling raising box, and a cutting blade 6 between the upper and lower sides of the mat-shaped seedling W lifted at one end and the seedling raising box 1. And a cutting device 7 for driving and cutting the roots of the lower mat-shaped seedling W from the seedling placement surface of the seedling raising box 1 by pushing the root. The lifting device 5 causes the hook-shaped member 13 to descend and swing from above to rush into the mat-shaped seedling and hook the same, and the hook-shaped member 13 hooked by the mat-shaped seedling W is translated upward. And an elevating mechanism b. The cutting device 7 includes a cutting blade 6 made of spring steel wound around the drum 12 and an electric motor 9 capable of driving the drum 12 to rotate reversibly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a root cutting machine for mat-like seedlings grown in a nursery box, and more particularly, to placing seedlings in a nursery box so that the seedlings can be easily taken out of the nursery box. The present invention relates to a machine for cutting a root entangled with a surface.

[0002]

2. Description of the Related Art When a mat-shaped seedling is grown in a nursery box, the root of the seedling is entangled and adheres to a drainage hole formed in the bottom of the box. Since a considerable amount of labor is required, it cannot be sufficiently covered by manual work.
No. 6107 proposes a machine for driving and cutting roots of seedlings attached to a nursery box.

[0003]

According to the proposed technique,
Although the root cutting of the seedlings could be mechanized,
For this purpose, a special structure in which one end of the seedling raising box is configured to be openable is required, so that the conventional seedling raising box cannot be used, and there is room for improvement. An object of the present invention is to provide a root cutting machine which can drive and cut the roots of a mat-like seedling while using a conventional seedling raising box.

[0004]

[Means for Solving the Problems]

[Structure] The first invention is a lifting device for forcibly lifting and turning one end of a mat-shaped seedling grown in a seedling raising box, and a cutting blade between upper and lower sides of the mat-shaped seedling whose one end is raised and the seedling raising box. And a cutting device for driving and cutting the root of the lower mat-shaped seedling from the seedling mounting surface of the seedling raising box.

According to a second aspect of the present invention, in the first aspect, a hooking mechanism for hooking the lifting device by lowering and swinging the hook-like member from above to enter the mat-shaped seedling, and a hook hooking the mat-shaped seedling. And a lifting mechanism for lifting and moving the member upward.

According to a third aspect of the present invention, in the second aspect, a quadruple link mechanism is constituted by a swingable upper and lower arm and a movable lever pivotally connected between these upper and lower arm tips. The lower arm and the movable lever are pivotally connected, and both the lower arm and the movable lever are provided with a relatively pivotable pivot shaft, and the hook-shaped member and the operated lever are integrated with this pivot shaft. A first cam capable of rotating the pivot shaft in the direction in which the hook-shaped member descends and swings in contact with the operated lever is provided, and the hooking mechanism and the movable lever are lifted. The second arm that rotates while contacting the upper arm in the direction
It is characterized in that each of the lifting mechanisms is provided by providing a cam.

In a fourth aspect based on the third aspect, the cutting device comprises: a cutting blade having flexibility and wound around a drum;
A driving mechanism for driving and rotating the drum; and a transmission mechanism for transmitting power from the cutting device to the first and second cams, and the cutting blade is unwound to provide a mat-shaped seedling and a seedling raising box. A transmission mechanism is configured such that when the drum is rotated in a direction to enter the space between the seedlings, the seedling hooking operation by the hooking mechanism and the raising operation of the mat-shaped seedling end by the elevating mechanism are enabled. Further, the transmission mechanism is provided with a one-way clutch so that power is not transmitted to the first and second cams when the drum rotates in the direction in which the cutting blade is wound.

According to the first aspect of the present invention, one end of the mat-shaped seedling in the seedling raising box is turned up by the lifting device, and the cutting blade is pushed into the turned-up portion by the cutting device to drive the root. Be able to cut. That is,
Even in a conventional nursery box in which a rectangular seedling mounting surface is integrated with a total of four front, rear, left and right side walls, it functions so that a cutting blade can be inserted from above the side walls.

According to the second aspect of the present invention, the hook-shaped member is slid down and stabbed at one end of the mat-shaped seedling by the operation of the hooking mechanism, and the hook-shaped member stabbed by the operation of the elevating mechanism is raised. The seedlings are turned up. In other words, the downward movement is oscillating, and the upward movement is operated by lifting, so that only a hook-shaped member having a bent shape may be moved, for example, a hook mechanism is provided at the tip. It is advantageous in that the object to be moved is lighter and the structure can be simplified as compared with a structure in which the member is moved up and down.

According to the third aspect of the present invention, the hook mechanism is provided by the first cam contacting and rotating the pivot shaft, and the elevating mechanism is provided by the second cam contacting and rotating the upper arm. Are configured respectively. In other words, by devising the action portions of the first and second cams to act on different portions of the quadruple link mechanism, the operation target is a single mechanism of only the quadruple link mechanism, but the lowering of the hook member It is possible to perform a combined operation, which is two kinds of movements of rocking and lifting.

According to the fourth aspect of the present invention, when the cutting blade is driven and inserted between the mat-shaped seedling and the seedling mounting surface of the seedling raising box, one end of the seedling prior to the cutting blade is turned up. By simply rotating the drum in the forward direction, a series of steps of raising the seedling end and cutting the root can be performed.
When the cutting is completed, the drum is driven in the reverse direction to wind up the cutting blade. At this time, it is meaningless if the hooking mechanism and the elevating mechanism are driven in the reverse direction. Therefore, when the drum is driven in reverse, the function of the one-way clutch causes the first
Since the cam and the second cam are not driven, unnecessary operation of raising the seedling end is avoided, and the power loss is eliminated. In addition, since the cutting blade is wound around the drum, it is possible to make the apparatus more compact as compared with, for example, means for driving and sliding the cutting blade.

[Effect] In the seedling root cutting machine according to the first aspect of the present invention, (a) lifting the seedling end and pushing the cutting blade in, the root cutting operation of the seedling can be performed while using the conventional seedling raising box. Could be mechanized.

[0013] In the root cutting machine for seedlings according to claim 2,
(B) The above-mentioned effect in a state where the structure is simple and functions lightly
Is obtained.

According to a third aspect of the present invention,
(C) The effect (b) can be obtained economically by mechanical means having simple movement.

[0015] In the seedling root cutting machine according to claim 4,
(D) A simple and compact drive structure that simply rotates the drum forward and backward can be performed, but a series of root cutting processes can be performed in a reasonable state without unnecessary drive parts.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 5 and FIG. 8 show a seedling root cutting machine including a placement part A for placing the seedling raising box 1 and a cutting part B for cutting the roots of the mat-like seedling W in the seedling raising box 1. It is shown. The mounting portion A is configured by laying a mounting frame 4 over the main body frame 2 and the legs 3, and the nursery box 1 having a mat-shaped seedling W grown to some extent is mounted thereon.

First, an outline of the operation of the root cutting machine will be described. First, as shown in FIG. 1, a seedling raising box 1 loaded with mat seedlings is placed on a mounting portion A, and then a switch is turned on. To activate the cutting section B. Then, the drum 12 rotates in the direction of arrow A, and the cutting blade 6 wound therearound starts to move forward with the seedling rake plate H, and the first cam 16 rotates to move the operated lever 18. As shown in FIG. 2, the hook-shaped member 13 is swung downward and thrust into the rear end of the mat-shaped seedling W (hooking mechanism a). At this time, the lifting prevention mechanism d functions to maintain the shape of the quadruple link mechanism c in the side view at that time, and the pivot 19 to which the operated lever 18 is attached does not escape upward, and the hook The member 13 protrudes into the seedling.

Then, as shown in FIG. 3, the second cam 1
7 kicks down the upper arm 22 and moves the quadruple link mechanism c in a direction in which the vertical length thereof is compressed, so that the hook-like member 13 is lifted up to forcibly lift and raise the seedling end. (Elevating mechanism b and lifting assist mechanism h). In the rolled-up state, the cutting blade 6 with the rake plate H enters between the mat-shaped seedling W and the seedling mounting surface 1a (see FIG. 4), and the rotation of the drum 12 continues by the rotation. The cutting blade 6 advances while cutting the root to the front end of the seedling raising box 1 (see FIG. 5).

The cutting blade 6 advances to the front end of the seedling raising box 1 (FIG. 9).
Then, the drum 12 is rotated in the reverse direction of arrow B to take up and move the cutting blade 6, and the mat-shaped seedling W whose root connection with the seedling raising box 1 is released is placed on the seedling rake plate H. The cutting blade 6 remains in the nursery box 1 in the retracted state, and only the cutting blade 6 returns (moves backward). At this time, only the drum shaft 11 is reversely rotated by the one-way clutch 21 mounted on the first cam shaft 14, and the pull-out promoting mechanism e (see FIG. 4) functions to cause the hook-shaped member 13 to float at that time. And the mat-shaped seedling W easily falls off from the hook-shaped member 13 while maintaining the posture.
The seedling stopper 20 prevents the mat-shaped seedling W from returning. Then, the drum 12 rotates in the reverse direction to the original position, and the cutting blade 6 returns to the standby position. By operating the seedling rake plate H, the mat-shaped seedling W can be taken out of the seedling raising box 1. At this time, each of the mechanisms a to e and h also returns to the original standby state. Next, the structure of each part will be described.

As shown in FIGS. 1 to 6, the cutting section B includes a lifting device 5 for forcibly lifting and turning one end of the mat-shaped seedling W of the seedling raising box 1, and a mat-shaped seedling W having one end lifted. A cutting device 7 which pushes the cutting blade 6 between the upper and lower sides of the seedling raising box 1 to drive and cut the root of the lower mat-like seedling from the seedling placing surface 1a of the seedling raising box 1; And a drive mechanism 8 for supplying the power to the main body frame 2. The drive mechanism 8 includes an electric motor 9 and a gear mechanism 10, and the gear mechanism 10 transmits a gear to a drum shaft 11 described later.

As shown in FIG. 10, the cutting device 7 is provided with two cutting blades 6 made of a flexible metal such as spring steel wound in parallel on a drum 12 having a drum shaft 11. It is configured. The cutting blade 6 has a length sufficient to reach the box end of the seedling raising box 1 placed on the mounting portion A, and the end portion thereof is fixed to the drum 12. When the drum shaft 11 is driven to rotate forward in the direction of arrow A, the cutting blade 6 is unwound from the drum 12 and protrudes in the direction of the mounting portion A. When the drum shaft 11 is driven to rotate in the direction shown by arrow B, the cutting blade 6 is wound around the drum 12 and stored.

As shown in FIGS. 6 and 7, the lifting device 5 is provided with a hooking mechanism a, a lifting mechanism, and a lifting mechanism on the outside of one of the right and left sides of the main body frame 2 (the left side if the mounting portion A is a front side as a machine). Mechanism b,
A posture maintaining mechanism f and a lifting assist mechanism h are arranged, and a lifting prevention mechanism d and a pull-out facilitating mechanism e are arranged outside the other (the right side if the placing section A is a front as a machine). It is configured.

As shown in FIG. 6, a first camshaft 14 having a first cam 16 mounted on a drum shaft 11 and a second cam 17 having a second cam 17 mounted on the first camshaft 14 are provided. Axis 15
Are arranged, and the shafts 11, 14, and 15 are gear-linked, and a transmission mechanism g that transmits power from the cutting device 7 to the first and second cams 16, 17 is configured. A quadruple link mechanism c in front of the second camshaft 15 includes an upper arm 22 swingable about a fulcrum X1, a lower arm 23 swingable about a fulcrum X2, and a pair of upper and lower arms 22, 23. And a movable lever 24 pivotally connected therewith. The lower arm 23 and the movable lever 24 are pivotally connected, and both of the lower arm 23 and the movable lever 24 are provided with a pivotable pivot shaft 19 which is rotatable relative to each other. The member 13 and the operated lever 18 are integrally mounted.

The hooking mechanism a has a structure in which the first cam 16 kicks up and comes into contact with the operated lever 18 to rotate the pivot shaft 19 in a direction in which the hook-shaped member 13 swings downward. . The elevating mechanism b has a structure in which the second cam 17 kicks down and contacts the root end of the upper arm 22 to lift and move the movable lever 24. In other words, the hook-shaped member 13 swings down around the pivot shaft 19 whose axis is fixed by the hooking mechanism a, and the four-way link mechanism c reduces its vertical length by the elevating mechanism b. The hook-shaped member 13 is lifted and moved upward by moving in the direction in which it moves.

Further, the operating lever 37 pivotally supported by the fulcrum X3 at the upper rear portion of the main body frame 2 is connected to the tip of the operated lever 18 by a connecting link 38, and is also brought into contact with the longitudinally intermediate portion of the operating lever 37. The lifting assist mechanism h is configured by attaching the applicable roller 39 to the second cam 17. This is because when the second cam 17 pushes the upper arm 22 downward, the roller 39 also pushes the action lever 37, and the hook-shaped member 13 is raised in parallel by the elevating mechanism b, and simultaneously the pivot shaft 19 is further moved. It is slightly rotated in the direction of arrow C. As a result, not only is the wobble of the hook-shaped member 13 prevented,
The complex movement moves upward while being stabbed and swayed by the seedling W, and functions to reliably lift and turn the seedling.

As shown in FIG. 7, the lifting prevention mechanism d
A third cam 25 attached to the first camshaft 14 and a fulcrum X
It comprises an upper right arm 26 that can swing around one turn. That is, during the operation of the hook mechanism a, the first camshaft 14
When the arc surface 25a of the third cam 25 centered at the center and the root-side protruding end 26a of the upper right arm 26 contact each other,
The upward movement of the quadruple link mechanism c, that is, the pivot shaft 19 is prevented. Therefore, when the hook-shaped member 13 descends and swings, the pivot shaft 19 does not escape upward and cannot enter the seedling W properly.

The pull-out facilitating mechanism e is composed of a fourth cam 27 attached to the second cam shaft 15 and a regulating arm 28 attached to the pivot shaft 19. That is, before winding the cutting blade 6 by rotating the drum 12 in the reverse direction, it is necessary to lift the hook-shaped member 13 upward to separate it from the mat-shaped seedling W, so that the cutting blade 6 is terminated. In the vicinity of the state in which the hook-shaped member 13 is rushed and moved to above, the hook-shaped member 13 floating above the mat-shaped seedling W placed on the seedling rake board H is suspended in the air while the cutting blade 6 is being wound. Floating hook-shaped member 1
Make sure that 3 does not fall. In other words, the function of maintaining the pivot shaft 19 so as not to rotate in the direction of arrow C is exhibited, and the cutting blade 6 can be smoothly wound up without falling by its own weight and the hook-like member 13 entering the mat-shaped seedling W. It is.

Further, there is provided a posture maintaining mechanism f for preventing the first camshaft 14 equipped with the one-way clutch 21 from moving from a predetermined standby position (start position) by rotating with the reverse rotation of the drum 12. is there. As shown in FIG.
The locking pin 29 deviated from the first camshaft 14 is bolted to the side surface of the first cam 16, and the bracket 31 and the locking pin bolted to the body frame 2 at the upper rear position of the first camshaft 14. 29 and a claw arm 34 urged by a return spring 33 so as to prevent the first cam 16 from rotating in the reverse direction (in the direction of arrow D). A notch 35 (which can be engaged with the tip of the claw arm 34) is provided with a ratchet mechanism 36 to constitute a posture maintaining mechanism f.

That is, as shown in FIGS. 1 and 6, when the ratchet mechanism 36 is engaged and the protruding piece 16a of the first cam 16 is located immediately below the operated lever 18, the start operation is started. The locking pin 29 is located below the first camshaft 14, and the first cam 16 is urged and maintained such that the notch 35 urges and contacts the tip of the claw arm 34. Therefore, despite the presence of the one-way clutch 21, the rotation of the first camshaft 14 due to the reverse rotation of the drum 12 is reliably prevented, and the operation is started by rotating the drum 12 in the forward direction. Sometimes the first cam 16, that is, the lifting device 5, is adjusted to the normal start position.

[Alternative Embodiment] The lifting device 5 may be configured without the lifting assist mechanism h. Cutting blade 6 to drum 12
Instead of being wound around, the cutting device 7 may be configured by pushing or pulling back the long cutting blade 6 by a rack and pinion structure or the like.

[Brief description of the drawings]

FIG. 1 is a side view of a root cutter in a standby state.

FIG. 2 is a side view of the root cutting machine in a state where a hook-like member has protruded into a seedling.

FIG. 3 is a side view of the root cutting machine in a state where a seedling end is turned up.

FIG. 4 is a side view of the root cutter in a state where the cutting blade has entered deeply.

FIG. 5 is a side view of the root cutter with the cutting blade largely moved back;

FIG. 6 is a side view of a left portion of a frame showing a structure of a cutting portion.

FIG. 7 is a side view of the right side of the frame showing the structure of the cutting portion.

FIG. 8 is a plan view of the root cutter in a standby state.

FIG. 9 is a plan view of the root cutter in a state where the cutting blade has entered the terminal end.

FIG. 10 is a perspective view showing a relationship between a cutting blade and a rake plate.

[Explanation of symbols]

 Reference Signs List 5 lifting device 6 cutting blade 7 cutting device 8 drive mechanism 12 drum 13 hook-like member 16 first cam 17 second cam 18 operated lever 19 pivot shaft 21 one-way clutch 22 upper arm 23 lower arm 24 movable lever a hooking mechanism b Lifting mechanism c Quadruple link mechanism g Transmission mechanism

Claims (4)

[Claims] 1. A lifting device for forcibly lifting and turning one end of a mat-shaped seedling grown in a seedling raising box, and pushing a cutting blade between upper and lower sides of the mat-shaped seedling whose one end has been raised and the seedling raising box. A root cutting machine for a seedling, comprising: a cutting device that drives and cuts a root of a lower mat-shaped seedling from a seedling mounting surface of a seedling raising box. 2. A hook mechanism for lowering and swinging a hook-like member from above to make the hook-shaped member protrude into a mat-shaped seedling and hook the same, and lifts the hook-shaped member hooked on the mat-shaped seedling upward. 2. The root cutting machine for seedlings according to claim 1, comprising a lifting mechanism for moving. 3. A quadruple link mechanism comprising a swingable upper and lower arm and a movable lever pivotally connected between the upper and lower arms, and the lower arm, the movable lever, Pivotally connected to each other, and both the lower arm and the movable lever are provided with a relatively rotatable pivot shaft, and the hook-shaped member and the operated lever are integrally attached to the pivot shaft, A first cam capable of rotating the pivot shaft in a direction in which the hook-shaped member comes down and swings in contact with the operated lever, so that the hooking mechanism and the movable lever are lifted; 3. The root cutting machine for seedlings according to claim 2, wherein a second cam that contacts and rotates with the upper arm is provided for each of the lifting mechanisms. 4. The cutting device comprises a cutting blade having flexibility and wound around a drum, and a drive mechanism capable of driving and rotating the drum. A power transmission mechanism for transmitting power to the first and second cams, and the drum is rotated in a direction in which the cutting blade is unwound and enters between the mat-shaped seedling and the seedling mounting surface of the seedling raising box. The transmission mechanism is configured such that the seedling hooking operation by the hooking mechanism and the raising operation of the mat-shaped seedling end by the raising / lowering mechanism are enabled, and the drum is moved in a direction in which the cutting blade is wound. When rotating the first
4. The root cutting machine for seedlings according to claim 3, wherein the transmission mechanism is provided with a one-way clutch so that power is not transmitted to the second cam.