JPH09121675A - Stalk positioning device for grafting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stalk positioning device for a grafting apparatus capable of correcting the position of a stalk even by using bent scion seedling and stock seedling to improve the grafting accuracy, preventing the falling off and the displacement of the grafted part and improving the percentage of success by using a positioning means capable of positioning a stalk of a grafting seedling before clamping with a grafting tool. SOLUTION: This positioning device is provided with a positioning means capable of positioning the stalks 5, 6 of grafting seedlings 3, 4 before clamping with a grafting tool 2. After finishing the clamping work with the grafting tool 2, a working member 18 is shifted outward by a pneumatic cylinder 16, the shaft 20 is also shifted in the same direction to open a spring guide 22 and the guide 22 is brought into contact with the stalk positioning member 23 to move the member in the same direction and separate from the stalks 5, 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stem positioning device capable of positioning the stems of a seedling in a grafting device for manufacturing a grafted seedling by joining a scion seedling and a rootstock seedling.

[0002]

2. Description of the Related Art A grafting device for manufacturing grafted seedlings is generally used by holding a joint 1 formed by combining the cut surfaces of a scion seedling and a rootstock seedling with a joining tool such as a clip.

[0003]

However, if only the above-mentioned means is used, when the stem is bent, the joint portion may be detached or the joint force may be weakened, resulting in a decrease in the survival rate.

[0004]

Therefore, the present invention provides a stem positioning device in a grafting device for improving grafting efficiency, and has taken the following technical means. That is, the joining portion 1 having the cut surfaces overlapped with each other is the joining tool 2
In the grafting device for producing grafted seedlings according to the above, the stem positioning device in the grafting device is provided with positioning means for positioning the stems 5 and 6 of the grafting seedlings 3 and 4 before holding the joining tool 2.

[0005]

[Function] The stems 5 and 6 of the scion seedling and the rootstock seedling are cut at predetermined positions and conveyed to the joint 1. Subsequently, the joint part 1 is held by the joint tool 2 and the positioning means positions the stem 5 and the stem 6 respectively.

[0006]

[Effect] The stems 5 of the grafting seedlings 3 and 4 when holding the joint 1
Since the positioning of 6 is performed, the bending of the stems 5 and 6 can be corrected, and the gripping force of the joining portion 1 by the joining tool 2 can be increased to improve the joining efficiency.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. First, the configuration will be described. The grafting device 7 sandwiches the joining place 8 to provide a scion seedling supply section 9 for the scion seedling 3 on one side and a rootstock seedling supply section 1 for the scion seedling 4 on the other side.
0 is provided. Then, a scion seedling cutting device 1 for cutting the stem 5 of the scion seedling 3 between the scion seedling supply unit 9 and the joining place 1
1 is provided, and a rootstock seedling cutting device 12 is provided between the rootstock seedling supply section 10 and the joint section 1.

[0008] A connector supply device for supplying the connector 2 with the connector 2 that holds the joints 1 of both seedlings 3 and 4 (in the embodiment, a tip opening / closing structure provided with a ring-shaped spring is used. A configuration in which rectangular plate bodies are engaged with each other and held is not limited thereto, but is provided (13).
In addition, a transport device that transports the scion seedlings 3 and the rootstock seedlings 4 to the joining place 8 (in the embodiment, an arm configuration having a gripping hand is used, but a disk type is not limited to this) 14, 15 are provided.

The tip of the connector supply device 13 is detachably provided on the upper surface of the air sillinder 16 with the connector guides 17 having the connector passages 17a facing each other in the left-right direction and having the open side inward when viewed from the front. There is. Reference numeral 18 denotes an actuating member located on the left and right sides of the air cylinder 16 and reciprocally provided in the left-right direction via four pistons 19.

A shaft 20 having a shaft center in the lateral direction is provided on the inner surface of the upper end portion of the actuating body 18, and a spring guide having a groove 21 penetrating to the front and rear ends at an intermediate portion in the vertical direction is provided at the other end of the shaft 20. 22 is provided. Further, a stem positioning body 23, which is located on the side where the open sides face each other in a front view and whose inner surface is in sliding contact with the upper and lower outer surfaces of the spring guide 22, is loosely fitted to the shaft 20. Reference numeral 24 is a compression type coil spring provided between the actuating body 18 and the stem positioning body 23. In addition, the side wall of the connector guide 17 is cut away at the position where the stem positioning body 23 moves.

The stem positioning body 23 is provided with notches 25 on the upper and lower surfaces on the tip side and having substantially the same shape in plan view. In addition, the facing tip surfaces of the stem positioning body 23 are in contact with each other before joining. The joining tool 2 is configured such that the holding portion at the tip end portion is provided so as to be openable and closable and is closed by a spring 26.

Next, the operation will be described. First, the scion seedling 3 and the rootstock seedling 4 are supplied to the scion seedling supply unit 9 and the rootstock seedling supply unit 10, respectively. Then, the stalks 5 of the scion seedlings 3 are cut by the scion seedling cutting device 11 while being conveyed to the joining side by the conveying device 14, and the stems 6 of the rootstock seedling 4 are conveyed to the joining side by the conveying device 15. Rootstock seedling cutting device 1 on the way
2 cut. Then, the cut saplings 3 and the rootstocks 4 that have been cut are conveyed to the joining place 8 and their cut surfaces are brought together.

A large number of the joining tools 2 supplied to the joining tool feeding device 13 are aligned in a line while being fed and are fed to the tip side thereof. The joining tool 2 that has reached the tip end passes through the joining tool passage 17a of the joining tool guide 17 by the pushing means (not shown) and holds the joined joining section 1. In this grafting work, when the cut surfaces of the scion seedling 3 and the rootstock seedling 4 overlap each other, each piston 19 is moved to a predetermined position on the air cylinder side by the air cylinder 16, while the coil spring 24 moves the stem positioning body 23. The stem positioning body 23 is moved to the seedling side so that the upper and lower end surfaces of the stem positioning body 23 are brought into contact with each other. At this time, the stem 5 of the spikelet seedling 3 enters the space formed by both upper cutouts 25, and the stem 6 of the rootstock seedling 4 enters the space formed by both lower cutouts 25. Therefore, even if the stem 5 of the spikelet seedling 3 is bent, it is corrected to be substantially upright by the upper cutout 25, and even if the stem 6 of the rootstock seedling 4 is bent, it is made substantially upright by the lower cutout 25. Since the correction is made, the bonding force can be increased on the side where the bonding portion 1 comes into close contact with the bonding portion 1 and the bonding ratio can be improved without dropping or slipping of the bonding portion.

When the holding work by the joining tool 2 is completed, the operating body 18 is moved outward by the air cylinder 16, so that the shaft 20 also moves in the same direction and opens the spring guide 22. Further, the spring guide 22 contacts the stem positioning body 23 and moves in the same direction to separate it from the stems 5 and 6.
After that, the pushing means further pushes the joining tool 2 toward the discharge side.

Therefore, since the stem positioning of the stem positioning body 23 is released after the holding work by the joining tool 2, the holding is improved. Further, the restriction release of the joint tool 2 and the positioning release of the stems 5 and 6 after the holding is completed are performed by one air cylinder 16
The drive structure can be simplified. Moreover, since the stalks 5 and 6 on both the upper and lower sides of the grafted seedling are positioned by sandwiching the connector 2, the positioning accuracy is improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a grafting device.

FIG. 2 is a plan view of a stem positioning means.

FIG. 3 is a front view of a stem positioning means.

FIG. 4 is a front view of a stalk positioning means at the time of joining.

FIG. 5 is a front view of the opened stem positioning means.

[Explanation of symbols]

 1 Joining part 2 Joining tool 3 Grafting seedling 4 Grafting seedling 5 Stem 6 Stem

Claims (1)

[Claims] 1. A grafting device for producing a grafted seedling by joining a joining portion 1 having cut surfaces overlapped with each other by a joining tool 2, wherein the stems 5, 6 of the grafting seedlings 3, 4 are positioned before the holding of the joining tool 2. A stem positioning device in a grafting device, which is provided with a positioning means for obtaining the same.