JPH089754A - Agricultural binding device - Google Patents

Abstract

(57) [Summary] [Structure] Knot Building 1 for knotting the binding cord from the needle
0, a string holder 11 for holding the ends of the binding cords and cutting the cords, and the knot building 10 can be swingably opened / closed with respect to the fixed claw 10A integrally provided with the rotary shaft 10a. In the agricultural binding device configured with the movable claw 10B, the convex portion 15 protruding toward the movable claw 10B is formed on the string holding surface of the fixed claw 10A. Fixing the convex portion 15 with the fixing claw 10A
The movable claw 10 is formed at an intermediate portion in the building longitudinal direction of the string holding surface of the
In the state where B is closed, the string diameter is larger than the distance d ₁ between the convex portion 15 and the string holding surface of the movable claw 10B, and the string holding surface on the tip side of the convex part 15 and the string holding surface of the movable claw 10B. The distance d ₂ is set to be approximately the same as the cord diameter. [Effect] The convex portion is provided by a simple modification that forms the convex portion on the fixed claw, by which the string knot can be brought close to the grain culm bundle side and a tight and tight binding state can be surely revealed. This has been realized without causing new inconveniences such as string disconnection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural binding device used for binders and combines.

[0002]

2. Description of the Related Art Generally, an agricultural binding device is used as an actual binding device.
As shown in Japanese Patent No. 114135, etc., a binding cord supplied from a needle is pinched and knotted by a rotating knotting bill, and a rotating cord holder holds an end of the cord and cuts the cord. ing. The knot building consists of a fixed building piece and a movable building piece that swings open and close relative to it, and at the time of knotting, there are two parts, a new string part supplied by a needle and an old string part already held by a holder. The holder is designed to hold the end of the cord with the conical taper surface of the holder body and the holding plate connected to the support bracket of the holder body. The holder main body has a spring urged toward the holding plate.

Between the fixed claw and the movable claw, there is a gap (actual opening 5) that allows the string to move laterally when the movable claw is closed.
No. 60234 (see FIG. 1) is provided, and in the knotting process from FIG. 4 (c) to FIG. 4 (d) in the former prior art described above, the two old and new strings wound around the knotted building are The knot can be made by sliding sideways with respect to the longitudinal direction.

[0004]

The gap in the above-mentioned knot building should be wide in terms of preventing the sideslip of the cord from being obstructed, but on the other hand, there should be no unnecessary movement during the knot operation. Since it is better to make it narrower in terms of, it has been conventionally set to a value that is the same as or slightly wider than the diameter of the cord. However, actually, the sideslip movement of the string precedes the rotational movement of the knotted building, and the knot moves toward the tip side,
The bundle tightening tends to be looser than expected,
There was room for improvement. The object of the present invention is to make a step-by-step improvement to realize moderate slipperiness and moderate frictional resistance, rather than excessive lateral sliding movement or excessive frictional resistance of a string in a knot building for tight binding. Thus, it is an object of the present invention to provide a binding device capable of smoothly performing a desired good knot operation.

[0005]

In order to achieve the above object, the present invention provides a knot building for knotting a tying cord supplied from a needle, and a cord holder for holding an end of the tying cord and cutting the cord. In the agricultural binding device, the knot building is composed of a fixed claw integrally provided with a rotary shaft and a movable claw capable of swinging open / close movement with respect to the fixed claw. In addition, a convex portion protruding toward the movable claw is formed, and when the movable claw is closed, it is configured such that the cord can be clamped by the cord clamping surface of the movable claw and the convex portion. To do.

Further, the convex portion is formed in the middle portion of the string holding surface of the fixed claw in the building longitudinal direction, and when the movable claw is closed, the gap between the convex portion and the string holding surface of the movable claw is larger than the string diameter. Becomes narrower,
In addition, it is preferable that the gap between the string holding surface of the fixed claw and the string holding surface of the movable claw located closer to the tip end side than the convex portion is configured to be substantially equal to the diameter of the string.

[0007]

When the knot operation is closely observed, the knot m is formed by pulling out the string wound around the knot building 10 with the momentum when the grain culm bundle B is released from the state shown in FIG. However, due to its operation, when the bundle-side cord portion a ″ that is pulled along with the release moves the wrapped cord portion a ′ to be pulled out from the knot building 10, the knot m is relatively bundled. As a result, the bundle tightens tightly at a position closer to the side (see Fig. 8) .However, as in the conventional one shown in Fig. 13, the winding is performed prior to the movement of the bundle-side cord portion a "that is pulled along with the discharge. When the attached string portion a'moves to the tip side of the building, the knot m may be located closer to the cutting side, loosening the bundle tightness and making the length L1 of the loop portion outside the knot m shorter. It was discovered.

According to the first aspect of the invention, when the movable claw 10B is closed (see FIG. 11), the cord a can be clamped by the cord clamping surface 16 and the convex portion 15 of the movable pawl 10B. Therefore, when the movable claw 10B shown in FIG. 5 is closed and moved to sandwich the old and new cord portions a and a, the cord portions a and a can be held at the clamped position (see FIG. 10). . Therefore, as shown in FIG. 7, when the culm bundle B is discharged by the discharging arm 12, the winding string portion a ′ is prevented from moving to the tip of the building in advance, and the culm bundle is always prevented. Bunch side string part a ″ accompanying the discharge movement of B
Will be pulled out from the knot building 10 in a state of being pulled by the movement of No. 1, and as described above, the binding operation with a tight tight binding can be performed.

In the prior art, the fixed claw 10A and the movable claw 1
Since the gap with 0B is almost the same as the diameter of the cord, as described above, the case where the cord can be held well and the binding is good, and as shown in FIG. Is closer to the tip side of the string, and the length L1 of the loop is
The case in which the loop length was shorter than the loop portion length L2 in the case of being properly bound and the tightness of the bundle was loose was revealed indefinitely, which was the cause of the bad binding.

If the movable claw and the fixed claw sandwich the string, a means for providing the convex portion 15 on the movable claw 10B can be considered. Considering there, the position of the string hooking portion in the string holder 11 is relatively lower than the position of the tip of the knot building 10 in the direction of the rotation axis 10a of the knot building 10, and therefore, in FIG. During the closing operation of the movable claw 10B, the movable claw 10B exhibits a behavior of pulling the two strings a, a while gripping the two strings a, a while handling the strings a, a.

Therefore, when the convex portion 15 is formed on the movable claw 10B, the contact area with the string a is reduced, the frictional resistance is increased, and the handle moving distance is further increased, though slightly. There are disadvantages such that it is difficult to operate smoothly, and string scraps are likely to be produced from a jute string or the like, which may interfere with good binding operation. On the other hand, the fixed claw 10
When the convex portion 15 is provided on A, the strings a and a and the movable claw 10 are provided.
The contact area with B is sufficiently large as before, and the handling movement distance does not become long.
There is an advantage that no new inconvenience due to the provision of No. 5 occurs.

The structure of claim 2 has the following operation. That is, if the string holding state by the closing movement of the movable claw 10B shown in FIG. 5 continues up to the string locking portion 10h (see FIG. 11) at the tip of the building, the winding arm is wound by the discharging movement of the grain culm bundle by the discharging arm. When the string portion a'moves to the tip side of the building, the string clamping reaction 10h at the tip of the building, which must be closed due to the string clamping reaction force, tends to open, and the string slips through the gap and hooks the string. There is a possibility that it may interfere with the original cord locking action of putting it down. Therefore, the convex portion 1
The string holding surface 14 of the fixed claw 10A located closer to the tip than 5
If the gap d ₂ between the movable claw 10B and the string holding surface 16 of the movable claw 10B is substantially equal to the diameter D of the string, the bill tip of the gap between the string holding surfaces 14 and 16 without opening the movable claw 10B. It is possible to hold the strings a, a in the side portion in a state where they are not pulled out, and the reliable string locking action at the tip of the building is not impaired.

Further, for example, a means for forming the above-mentioned convex portion 15 on the movable claw 10B is conceivable. With this means, the movable claw 10B is closed and moved so that the old and new cord portions a and a are grasped. In the state shown in FIG. 12, since the movable claw 10B is closed and moved while the nodule building 10 is rotationally moved, the strings a and a that are drawn while being handled by the movable claw 10B are closer to the tip than the urging convex portion 15 on the string holding surface. I slipped to 16 and settled down, and I could not expect good knot operation. Therefore, it is significant to form the convex portion 15 on the fixed claw 10A as in the present application.

[0014]

As a result, in the binding device according to the first aspect of the present invention, the knot of the cord is brought closer to the grain-bundle side by a simple modification to form a convex portion on the fixed claw, and the binding state is tight and good. Can be provided as a thing that can be surely revealed. or,
In the binding device according to the second aspect, the above effect according to the first aspect is obtained while preventing a new inconvenience such as a string detachment (so-called pachinkomis) due to the provision of the convex portion.

[0015]

EXAMPLES Examples of the present invention will be described below with respect to a binder binding device. As shown in FIG. 14, a raising device 1 for raising a grain culm, a mowing device 2 for mowing the raised grain culm, and a lateral conveying device (not shown) for laterally conveying the cut grain culm.
Pre-processing section A consisting of a binding device K arranged at the end of the
Is arranged in the front part of the machine body, and the transmission case 3, the engine 4, the wheels 5, and the steering handle 6 are arranged behind it to form a binder.

As shown in FIG. 15, the bundling device K is accompanied by the operation of the packer 7 for scraping the grain culm, the sensing door 8 for sensing the focusing pressure of the grain culm scraped by the packer 7, and the sensing door 8. A needle 9 to be driven, a knot building 10 for knotting a binding string supplied by the needle 9, and a string holder 1 for holding an end of the knotted string and cutting the string.
1 and a discharge packer 12 that discharges the united grain culm.

As shown in FIGS. 9-11, the nodule building 10
Is composed of a fixed claw 10A integrally provided with a rotary shaft 10a and a movable claw 10B which is capable of swinging open / close movement around the axis P _{1 with} respect to the fixed claw 10A. And the fixed claw 1
A projecting portion 15 protruding toward the movable claw 10B is formed on the string holding surface 14 in 0A, and when the movable claw 10B is closed (see FIG. 10), the string holding surface 16 of the movable claw 10B is formed.
With the convex portion 15, the string a can be held.

That is, the convex portion 15 is formed by extending from the intermediate portion in the building longitudinal direction of the string holding surface 14 of the fixed pawl 10A to the root portion, and when the movable pawl 10B is closed, the convex portion 15 is formed.
The distance d ₁ between the movable claw 10B and the string holding surface 16 of the movable claw 10B is set to be smaller than the diameter D of the string a, so that the string a can be held. Then, the string holding surface 14 of the fixed claw 10A located on the building tip side with respect to the convex portion 15
And the distance d ₂ between the movable claw 10B and the string holding surface is the diameter D of the string a.
It is configured to be almost the same value as. That is, d ₁ <
D≈d ₂ is established.

As shown in FIGS. 4 and 12, the cord holder 1
1 comprises a holder main body 11a, a conical tapered surface 11b, a hook 11c connected to this, a support bracket 17, a holding plate 17a connected to this, a cutter 21, and the like. The holder main body 11a having the conical taper surface 11b is biased toward the holding plate 17a by the spring 18, and the biasing force can be adjusted by the nut 19. Then, as shown in FIG. 1, the knot building 10 and the string holder 11 are rotationally driven by a timing gear 13 which is driven by the operation of the needle 9. Also, on the opposite side of the sensing door 8, a long string-shaped string guide hole 20a is provided.
The string guide plate 20 provided with is arranged, and the knot building 10 and the string holder 11 are arranged on the front side thereof.

Next, the binding operation by the binding device K will be described. As shown in FIG. 1, when the end portion of the string a is clamped by the string holder 11 and a predetermined amount of the straw B is accumulated in the sensing door 8, the needle 9 winds the string a around the straw B while the needle 9 is wound around the string B. The string a is carried to the string holder 11 side through the guide hole 20a.
Next, the string holder 11 and the nodule building 10 start rotating in the clockwise direction on the paper surface. As a result, as shown in FIG. 2, the string a on the needle 9 side and the string a on the string holder 11 side are connected to the knot building 1.
The string a on the needle 9 side starts to be bundled on the string a on the string holder 11 side by the hook 11c of the string holder 11.

When the string holder 11 and the knot building 10 are further rotated, the movable claw 10B closed in the knot building 10 is opened by a cam (not shown) as shown in FIGS. The bundled strings a on the side and the string holder 11 side enter between the fixed claw 10A and the movable claw 10B. Then, as shown in FIGS. 5 and 6, the movable claw 1
OB is closed and the needle 9 side and the string holder 1 are closed.
The bundled string a on the first side is held between the fixed claw 10A and the movable claw 10B.

As shown in FIGS. 5 and 6, the cord holder 11
In the above, the end of the string a that was initially clamped is separated from the cord holder 11, and the string a on the needle 9 side is clamped by the cord holder 11 by the hook portion 11c of the cord holder 11, and is newly clamped by the cord holder 11. The knot building 10 side of the string a is cut by the cutter 21 of the algae holder 11, and when the above operation is completed, the knot building 10 and the string holder 11 stop at that position. Then, the discharge arm 12 operates to push the straw B shown in FIG. 7 rightward on the paper surface, and the string a on the straw B side moves to the side portion 20b of the string guide hole 20a as the straw B moves. The ring a1 of the string a wound around both the fixed claws 10A and the movable claws 10B is pulled out from the knot building 10 along with it.

The ring a1 of the string a has a fixed claw 10A and a movable claw 10
Even if it is pulled out from B, the holding cord a2 (see FIG. 8) held between the fixed claw 10A and the movable claw 10B is fixed to the fixed claw 1
Since it remains between 0A and the movable claw 10B, the loop a of the string a
When 1 is pulled out from the knot building 10, the holding cord a2 is inserted into the loop a1 of the cord a. When the straw B is further pushed rightward on the paper surface, the knot m is formed at the portion of the loop a1, and finally the holding cord a2 also comes out from the knot building 10 as shown in FIG. The bundling operation of the cycle is completed.

In FIG. 12, the state in the middle of shifting from the state shown in FIG. 3 to the state shown in FIG. 5, that is, the cord holder 1
The state in which the movable claw 10B is closing and moving to pick up the two strings a from 1 is shown. In this state, the movable claw 10 in which the two strings a from the string holder 11 are closed and moved.
It touches B at a point q and is lifted up while being handled, whereby it is drawn toward the fixed claw 10A. Then, in the closed state of the movable claw 10B shown in FIG. 5, the string a is clamped by the convex portion 15 and the string clamping surface 16 on the side of the movable claw 10B, and the clamping position of the winding cord part a ′ is held. For the first time, the wrapping cord portion a ′ is pulled by the operation of the discharging arm 12 shown in FIG. 7.

Therefore, even if the grain culm B is discharged at a high speed, the winding string portion a'is prevented from coming out of the knot building 10 prior to the discharging operation by the discharging arm 12, so that the knot m is discharged from the straw bundle. B is formed close to B and tightly bundled with good bundling, and the length L2 of the loop portion outside the knot m is sufficiently long.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a rear view of the main part of the binding device showing a state in which a string is fed by a needle.

FIG. 2 is a rear view of the main portion of the binding device showing a state in which the knot portion starts to rotate.

FIG. 3 is a side view showing a state in which the knot is further rotated from the state of FIG.

FIG. 4 is a side view of FIG.

FIG. 5 is a plan view of a main part following FIG.

6 is a side view of FIG.

FIG. 7 is a rear view of the main part of the binding device showing a state in which straw is being released.

FIG. 8 is a rear view showing a binding operation end state.

FIG. 9 is a side view showing the structure of a nodule building.

FIG. 10 is a sectional view of a main part of a nodule building.

FIG. 11 is a side view showing a closed state of the nodule building.

FIG. 12 is a side view showing an operation state in which the string is squeezed in by the knot building.

FIG. 13 is a rear view of the main part of the binding device showing a conventional binding state.

FIG. 14 is a side view of the binder.

FIG. 15 is a plan view showing a binding device portion.

[Explanation of symbols]

 9 Needle 10 Nodule Building 10a Rotating Shaft 10A Fixed Claw 10B Movable Claw 14 String Holding Surface 15 Convex Part 16 String Holding Surface

Claims (2)

[Claims] 1. A knot building (10) for knotting a tying string supplied from a needle (9), and a string holder (11) for holding an end of the tying string and cutting the string, and the knot. The building (10) is composed of a fixed claw (10A) integrally provided with a rotary shaft (10a), and a movable claw (10B) that can be swingably opened and closed relative to the fixed claw (10A). A binding device, wherein a protrusion (15) protruding toward the movable claw (10B) is formed on the string holding surface (14) of the fixed claw (10A), and the movable claw (10B) is closed. In the state, the string holding surface (16) of the movable claw (10B) and the convex portion (1)
5) An agricultural binding device configured so that a string can be clamped with the cord. 2. The fixing claw (10) is provided with the convex portion (15).
(A) is formed at an intermediate portion of the string holding surface (14) in the building longitudinal direction, and when the movable claw (10B) is closed, the projecting portion (15) and the string holding surface of the movable claw (10B) ( 1
6) The gap between the fixing claw (10A) is narrower than the cord diameter, and is located closer to the tip side than the convex portion (15).
2. The agricultural binding device according to claim 1, wherein a gap between the string holding surface (14) and the string holding surface (16) of the movable claw (10B) is substantially equal to the diameter of the string.