JPS6321446B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a knot part having a bill and a holder is provided on one side and a string supply part having a needle is provided on the other side with a convergence space in between, and the drive shaft and the knot part and the string are provided. The present invention relates to a stem and culm binding device in which the supply unit is interlocked and connected via a one-rotation clutch that is engaged and operated based on sensing of a convergence amount exceeding a setting in the convergence space.

In conventional tying devices, the needle rotates to return to the string supply section at the same time as the tying cord is delivered to the building, and the tying cord is pulled by the return rotation of the needle and the expansion of the converging stem culm. It is pulled in the opposite direction by the building, which has the disadvantage of easily causing the string to break.In order to avoid the string breaking, it is necessary to use a strong and highly elastic binding string.
It had the disadvantage of being expensive.

In view of the above points, it is an object of the present invention to suppress the tension of the binding cord in the direction opposite to the direction in which it is pulled by the building when the building is in operation, and to prevent the cord from breaking due to knots. shall be.

In order to achieve the above object, the present invention provides the above-mentioned stem culm binding device, in which the needle is moved to the maximum binding string supply position or It is characterized by having a mechanism for maintaining it at a position close to that position.

In other words, the bill is operated to knot while the needle is maintained at or near the maximum strap supply position.

Therefore, by returning the needle to the string supply section side, it is possible to avoid pulling the binding string in the opposite direction to the direction in which the binding string is pulled when the building is knotted, and, The expansion of the convergent stem culm bundle can be prevented by the needle, and the tension of the binding string in the opposite direction described above due to the expansion can be prevented, and the pulling force of the building against the binding string due to knotting action can be prevented. It has become possible to reduce the number of cords and prevent the cord from breaking. Moreover, as a result of being able to reduce the tensile force on the binding cord, even relatively low-strength and inexpensive binding cords can be used without causing the cord to break, making it economically advantageous.

Hereinafter, embodiments of the present invention will be described in detail based on illustrative drawings.

A weeding tool 1, 1 that separates the stem culm to be reaped and the stem culm not to be reaped, a pulling device 2 that pulls up the planted stem culm, a reaping device 3 that reaps the pulled up stem culm, and a weeding device 3 that separates the stem culm that is to be reaped. A lateral conveying device 4 for conveying to one side of the machine body, and a tying device 5 for converging and tying the reaped stem culms in predetermined amounts at a time, are mounted on a pair of left and right wheels 6, and are equipped with an engine 7. , a control handle 8 is connected to a traveling body extending to the rear of the body to form a walking binder.

To configure the binding device 5, a U-shaped binding case 9 is provided in an upwardly open state, and a knot 10 is provided on the front side of the convergence space S of the binding case 9.
A string supply section 11 is provided on the rear side of the convergence space S, respectively.

In the knot section 10, a bill 12 and a holder 13 are provided in a state where they are driven by a bevel gear 14, and on the other hand, in the string supply section 11, a needle 1 is provided.
The needle 15 and a first crank arm 17 fixed to a needle drive crankshaft 16 are interlocked and connected via a second crank arm 18 and a link 19.

A drive shaft 22 of a scraping packer 21, which is constantly operated, is interlocked with the drive shaft 20 of the bevel gear 14 and the needle drive crankshaft 16 via a one-turn clutch 23.

As a predetermined amount of stem culms are converged in the convergence space S, a pressure-sensitive door 24 is provided which receives a convergence pressure higher than the set value from the packer 21, and the support shaft 25 of the door 24 and the above-mentioned one of the entry side biases are provided. rotating clutch 23
are linked, and the clutch 23 is engaged and operated based on the detection of the convergence pressure that is higher than the set value, and the needle 15,
It is configured to drive the building 12, the holder 13, and a revolving door 26 that serves both for receiving converging stem culms and releasing bound stem culms.

To connect the first crank arm 17 and the second crank arm 18, as shown in FIG.
A pinion gear 28 is integrally attached to a pivot shaft 27 connected to the second crank arm 18, and the pinion gear 28 is attached to a circular internal gear 29 centered on the rotation axis P of the needle drive shaft 16. The needle 15 rotates to deliver the binding string to the building 12 to adjust the diameter ratio and occlusal phase of the pinion gear 28 and internal gear 29, and the length of the second crank arm 18. When the needle 15 is rotated to the maximum string supply position or a position close to it, the displacement of the needle 15 by the first crank arm 17 is controlled by the second crank in a predetermined range corresponding to the period during which the building 12 operates. The position maintaining mechanism 30 is configured to absorb the energy by rotation of the arm 18, and maintain the needle 15 at or near the maximum position for supplying the binding cord while the building 12 is in operation. It has been done.

FIG. 5 shows another embodiment, in which a link 32 pivotally connected to a crank arm 31 fixed to the needle drive crankshaft 16 is connected to a long hole 3 in the needle 15.
A compression spring 34 is provided between the link 32 and the needle 15 as an example of a spring that urges the needle 15 to rotate in advance. A stopper 35 is provided so that it operates when the needle 15 is rotated to the maximum position for supplying the binding cord to deliver the binding cord to the building 12, and the needle 15 comes into contact with the stopper 35 when the needle 15 is rotated to the maximum position for supplying the binding cord. The link 32 is prevented from rotating and maintains its position.
The elongated hole 33 resists the biasing force of the spring 34.
The position maintaining mechanism 30 is configured such that the building 12 is operated during the displacement within a range of .

In this alternative embodiment, it is only necessary to improve the connection structure between the link 32 and the needle 15,
The structure is simpler than the occlusal configuration of the pinion gear 28 and internal gear 29 as in the case of the first embodiment.
Further, there is an advantage that the ready-made binding device 5 can be easily modified.

To configure the position maintenance mechanism 30 in the middle of the linkage mechanism between the needle 15 and the knot 10, for example,
A transmission shaft driven through a one-turn clutch 23 is provided, and the transmission shaft and the needle drive crankshaft 16 are interlocked and connected by a partial gear engagement configuration, so that the needle 15 is at or near the maximum tying string supply position. While the building 12 is rotated to the position, the transmission shaft is driven and rotated, but the needle 15 is prevented from returning and rotated, and the transmission to the needle drive crankshaft 16 is prevented. , in the above alternative embodiment, the link 3
2 and the needle 15 are pivotally connected through a single hole, and the link 3
Various structural modifications are possible, such as configuring 2 with a double cylinder configuration so that it can slide and expand and contract, and with a compression spring inside to bias it toward the expansion side.

The binding device according to the present invention is not limited to the walking type binder as shown in the drawings, but also includes, for example, a waste straw binding device attached to a combine harvester, and a waste straw bundle binding device attached to a harvester that binds stem culm bundles into larger bundles. Applicable to various stem culm binding devices such as devices.

[Brief explanation of drawings]

The drawings show an embodiment of the stem culm binding device according to the present invention, in which Fig. 1 is an overall side view of the walking binder, Fig. 2 is a partially cutaway side view of the main part, and Fig. 3 is a plan view of the main part. , FIG. 4 is a plan view of the main part showing the linkage structure between the crankshaft and the needle, and FIG. 5 is a plan view of the main part showing another embodiment. 10... knot part, 11... string supply part, 12...
Bill, 13...Holder, 15...Needle, 1
6... Drive crankshaft, 17... First crank arm, 18... Second crank arm, 19... Link, 22... Drive shaft, 23... Single rotation clutch, 28... Pinion gear, 29... internal gear,
30... Position maintenance mechanism, 31... Crank arm, 32... Link, 33... Long hole, 34... Bullet, S... Convergence space.

Claims (1)

[Claims] 1. A knot part 10 having a building 12 and a holder 13 on one side and a string supply part 11 having a needle 15 on the other side are provided across a convergence space S, and a drive shaft 22 and the knot 10 and a string supplying section 11 are interlocked and connected via a one-rotation clutch 23 that is engaged based on sensing of a convergence amount greater than a setting in the convergence space S, the needle 1
The stem culm is characterized in that a mechanism 30 for maintaining the needle 15 at the maximum binding string supply position or a position close to it when the building 12 is operated is provided in the middle of the linkage mechanism between the tube 5 and the knot 10. Binding device. 2 The position maintaining mechanism 30 includes a first member fixed to the drive crankshaft 16 of the needle 15
A second crank arm 18 is rotatably coupled to the crank arm 17, and the second crank arm 18 and the needle 15 are coupled via a link 19, and the second crank arm 18
A pinion gear 28 connected to the drive shaft 16
A circular internal gear 29 centered on the rotation axis of
With the needle 15 rotated to the maximum binding string supply position or a position close to it, the building 12
According to claim 1, the second crank arm 18 is rotated and engaged so as to absorb the transmission of the displacement of the first crank arm 17 to the link 19 while the second crank arm 18 is in operation. binding device. 3. To configure the position maintenance mechanism 30, a link 32 pivotally connected to a crank arm 31 connected to the driving crankshaft 16 of the needle 15 is interlocked and connected to the needle 15 via an elongated hole 33, A state in which a bullet 34 is provided that urges the needle 15 to rotate toward the building 12 in advance of the crank arm 31, and the needle 15 is maintained at the maximum binding string supply position or a position close to it. According to claim 1, the rotation of the crank arm 31 against the biasing force of the ammunition 34 is absorbed by the elongated hole 33 while the building 12 is in operation. The binding device according to item 1.