JPH07298782A - Cutter for grafted seedling - Google Patents

Abstract

PURPOSE:To simply and surely carry out operations to prepare take surfaces (obliquely cut ends) of a stock and a scion and eliminate the need of skill. CONSTITUTION:This cutter for a grafted seedling is obtained by passing a sliding bar 9 along a blade part 1 on one side of foreign scissors, attaching a thin blade 2 to the front thereof and rack teeth 13 to the rear thereof, installing a fan-shaped gear 14 in the axial part of a blade part 3 on the other side, closing the opened scissors and thereby feeding the thin blade 2 into a stock or a scion (A) in a recessed groove 4 of the blade part 3 on the other side while moving the thin blade 2 to the right in the figure. The direction of the recessed groove 4 is kept at an angle suitable for the take surfaces to thereby well fit both the take surfaces of the stock and scion. As a result, the take ratio is raised.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scissor-shaped cutter for grafted seedlings that forms an oblique grafting surface that abuts a rootstock and scion to be grafted.

[0002]

2. Description of the Related Art It is necessary that a rootstock and a scion to be grafted should be cut diagonally in the middle of a seedling and both diagonal cuts should be abutted exactly in a tubular graft clip. If the cutting is performed with scissors, the cellular tissue (forming layer) is crushed and the nutrients absorbed from the root of the rootstock cannot be transmitted to the scion.

[0003]

Therefore, conventionally, a sharp cutter knife, a razor blade, etc. are used to manually cut the seedlings one by one at an oblique angle. It is difficult to align them uniformly, and if the cutting angle of the rootstock and the cutting angle of the scion do not match, there will be a gap between the diagonal cuts of the rootstock and the scion and the survival rate will decrease.

[0004]

The cutter for grafted seedlings of the present invention has a thin blade only on one side of a portion corresponding to both blades of Western scissors, and supports a rootstock or a scion on the other side. The thin blade is cut in the middle of the scion, and the thin blade is attached to the tip of the bar slidably extending along the length of the blade on one side, and the tip of the bar is attached to the blade on the other side. It is characterized in that it is adapted to be driven along the longitudinal direction by engaging with a gear or a cam that rotates together with the section. The supporting surface for supporting the rootstock or the scion of the blade portion on the other side is a groove having an appropriate inclination angle as a cutting surface for grafting with respect to the longitudinal direction of the blade portion so that the cutting angle is constant. Can be kept.

[0005]

According to the present invention, a thin blade is attached to one side of the scissors, and the other side of the scissors is used as a support for a rootstock or a scion. It is a new type that does. Moreover, in the cutting, the blade is not pushed like cutting vegetables, but is cut while pulling the blade toward you like in the case of sashimi. Furthermore, the cutting angle can be made constant by storing the rootstock and the scion in a groove having an appropriate inclination angle with respect to the blade portion and cutting.

[0006]

1 and 2 show a cutter according to an embodiment of the present invention when it is closed and when it is opened. A thin blade 2 is attached to the blade 1 on one side, and a groove 4 is provided on the blade 3 on the other side to receive a rootstock and a scion and determine an inclined cutting angle. 5 is a scissor shaft pin,
6 and 7 are patterns. The thin blade 2 is fixed by burying the base of the thin blade 2 in a blade base 8, and the blade base 8 is fixed to a sliding bar 9 by a set screw 11.
It is attached to the tip of the and integrated (Fig. 3). Bar 9
The guide pin 9a attached to the guide slot 10 extends through the blade portion 1
By moving the inside, the bar 9 and the blade base 8 slide so as not to separate from the blade portion 1.

A member for driving the blade base 8 along the blade portion 1 is a sliding bar 9 connected by a set screw 11 (FIG. 3) and the bar 9 thereof.
At the other end, there is a fan gear 14 (FIG. 1) whose tooth surface meshes with the rack tooth 13 which has a face in the gap between the two blade parts 1, 3, and a handle 6 which is rotated by attaching the fan gear 14. . A sliding groove 12 for receiving the bar 9 is formed in the inner surface of the blade portion 1, and a rear protrusion of the blade base 8 also slides therein (FIG. 3, FIG.
4). Further, as an accessory of the blade portion 1, there is a positioning plate 16 mounted and hung on the lower surface of the blade portion 1 near the shaft pin 5. As shown in FIG. 5, this is inserted into the positioning groove 17 that is formed inside the mating blade 3. With this, even if the shaft pin 5 is loosened a little, the blade portions 1 and 3 can be opened and closed in the correct relational positions.

The thin blade 2 cuts the seedling A as shown in FIG. At that time, since the seedling A is put in the concave groove 4 which is inclined at a required angle as shown in FIG. 6, the cut end of the seedling A is always an inclined surface having a constant angle. In this embodiment, the concave groove 4 is provided with the thin blade 2.
In order to provide it on both sides of, the bracket 15 is added to the inside of the blade portion 3 as shown in FIG. 4, and the extended portion 4 ′ of the concave groove 4 is formed on the upper surface thereof. As can be seen in FIG. 6, the handles 6, 7 are double-edged parts 1,
It is suitable to put seedlings in the groove 4 with one hand and operate the stalks 6 and 7 with the other hand, since 3 is inclined by about 30 ° when it is horizontal.

In summary of the operation of the cutter of this embodiment, the former of the blade portions 1 and 3 can be replaced with a sliding bar 9 with rack teeth 13 which is fitted in the sliding groove 12 and slides. It has a blade base 8 with thin blades 2 to be attached, and a positioning plate 16 attached to the lower surface, the latter having a sector gear 14 for driving the rack teeth and a positioning groove 17 for receiving the positioning plate 16.
And a groove 4 for keeping the cutting angle of the seedling constant. As a result, when the handles 6 and 7 are opened as shown in FIG. 2, the blade base 8 with the thin blade 2 at the tip of the blade 1 closes the handles 6 and 7 as shown in FIG. Only the rotation angle of the fan gear 1
4 rotates to drive the rack teeth 13 toward the handle.

Since the sliding bar 9 and the blade base 8 move by the distance the rack teeth 13 have moved, the thin blade 2 of the blade base 8 is pulled toward the handle. Therefore, the thin blade 2 makes a compound motion of moving along with the blade portion 1 while rotating together with the blade portion 1 by the rotation of the handle 6. This is the same as using a knife to cut sashimi, and is the best way to cut plant tissue without crushing it. If you continue to cut a slightly hard seedling, the shaft pin 5 will loosen and the blade 1,
The relative position of 3 tends to be uncertain, but the positioning plate 1
6. By adding the positioning groove 17, the blade portions 1 and 3 can be opened and closed without deviating from the relative position regardless of the looseness of the shaft pin 5.

Although one embodiment has been described above, it goes without saying that the present invention can be variously changed and applied according to the designer's idea within the scope not changing the gist. The guide mechanism of the bar 9 that slides along the one-sided blade portion 1 is not limited to the groove 12, and may be any rail. The drive mechanism of the bar 9 is not limited to the rack teeth 13 and the fan gear 14, and the rotation operation can be changed into a linear operation by a known cam mechanism, for example. The other side blade 3 has a shape similar to that of Western scissors,
It may be formed into a shape of a stand for a rootstock or a scion, and the inclination angle of the groove 4 may be adjustable. Not only can the shapes of the handles 6 and 7 be changed, but also various features can be changed in terms of usability such as addition of a spring for automatic return. Although the above-mentioned embodiment is intended for seedlings having a diameter of about 3 mm, it is easy to change the design for grafting trees.

[0012]

EFFECT OF THE INVENTION The present invention has opened a new method for cutting grafted seedlings, which has a scissor-like shape that does not require skill and, unlike shearing by scissors, cuts the seedlings by pulling a thin blade toward you. Then, by adding a groove for keeping the seedlings at an angle suitable for the inclination of the grafted surface, the inclination of the cut surface can be kept constant. As a result, the inclination angle of the cut surface of the grafting surface of the rootstock and the scion of the scion is always aligned without requiring skill,
The cuts can be matched and the survival rate increases.

[Brief description of drawings]

FIG. 1 is a plan view of a cutter according to an embodiment of the present invention in a closed state.

FIG. 2 is a plan view showing an opened state of the cutter shown in FIG.

FIG. 3 is an elevation view of the bar and the blade rest viewed from above in FIG.

FIG. 4 is a sectional view taken along line XX of FIG.

5 is a cross-sectional view taken along line YY of FIG.

FIG. 6 is an elevation view of FIG.

[Explanation of symbols]

 2 Thin blade 4 Groove 9 Bar 13 Rack tooth 14 Fan gear

Claims (2)

[Claims] 1. A grafting tool for cutting scissors, which has a thin blade only on one side of a portion corresponding to both edges of the scissors, supports the rootstock or a scion on the other side, and cuts and cuts the thin blade in the middle of the rootstock or the scoop. There, the thin blade is attached near the tip of the bar that slidably extends along the length of the blade on one side, and the proximal end of the bar is on the gear or cam that rotates with the blade on the other side. A grafted seedling cutter characterized in that it is engaged and driven along the length. 2. The cutter according to claim 1, wherein the supporting surface of the blade portion on the other side that supports the rootstock or the scion has an appropriate inclination angle as a cutting surface for grafting with respect to the longitudinal direction of the blade portion. A scissor-shaped cutter for grafted seedlings, which is a concave groove.