JPH089753A - Agricultural binding device - Google Patents

Abstract

(57) [Summary] [Structure] Knot Building 1 for knotting the binding cord from the needle
0, a string holder 1 for holding the end of the binding string and cutting the string
In the agricultural binding device, the knot building 10 is composed of a fixed claw 10A integrally provided with a rotary shaft and a movable claw 10B that can swing and open / close relative to the fixed claw 10A. A portion of the movable claw 10B excluding the string holding surface facing the movable claw 10B and the fixed claw 10 of the movable claw 10B.
Hard chrome plating is applied to the part excluding the string holding surface facing A. In the plating process, the movable claw 10B is closed and the fixed claw 10A is assembled into the plating solution in a set state to energize. [Effect] By thoroughly studying the linking operation between the nodule building and the string when the nodule is operating, the risk of binding error is further reduced by the relatively simple modification that only the outer surface of the nodule building is plated. It was possible to provide a preferable binding device.

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]

Since the knotting operation in the binding device is quick in that it is completed in a moment (a little less than 1/4 second), it is assumed that a series of knotting operations can be quickly performed without resistance. It is desirable to set it. In the first half of the knot operation, the string is wound by rotating the knot building, whereas in the latter half of the knot operation, the wound string part of the knot building is slidably moved sideways as described above. Therefore, it is important to smoothly operate the second half of the knotting operation, which is disadvantageous for quick operation.

Conventionally, because the sliding resistance of the string in the knotted building is relatively large, the sideways sliding movement of the wound string part cannot operate smoothly, and as shown in FIG. 13, the knot m is on the holder side. The loop cord portion a2 formed near the cord portion may be shortened to loosen the bundle tightness, or the cord may be broken to cause a binding error. An object of the present invention is to devise a bundling device so that the sideways sliding movement of the wrapping cord portion in the knotted building described above can be smoothly and quickly revealed without any resistance so that a good bundling operation state can be obtained without a binding error. There is a point to.

[0006]

In order to achieve the above object, the present invention comprises a knot building for knotting a string supplied from a needle, and a string holder for holding the end of the string and for cutting the string. At the same time, in the agricultural binding device in which 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, it is suitable for the movable claw of the fixed claw. It is characterized in that the portion excluding the string holding surface and the portion of the movable claw facing the fixed claw excluding the string holding surface are plated.

[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. That is, when the bundle-side cord portion a ″ that is pulled as the bundle is discharged, the wrapped cord portion a ′ is also pulled and slides from the root side of the knot building 10 to the tip side, and then the movable claw 10B is opened. The wound string portion a ′ is pulled out from the knot building at the end to form the knot m (see FIG. 8).
At this time, the wound string portion a ′ pulled by the bundle side string portion a
It has been found that when the slippage between the knotted building surface and the surface of the knotted building is poor, the frictional resistance of the above-mentioned lateral sliding movement becomes large and a string breaks, resulting in a binding error. Therefore, it is advantageous that the coefficient of friction of the outer surfaces of the fixed and movable pawls is low.

The movable claw 10B is closed during the sideslip movement, and the two strings from the string holder 10 are fixed and held at a relatively inner portion of the knotted building 11 by the action of the movable claws 10A and 10B. By doing so, as shown in FIG. 8, the knot m is formed on the side closer to the straw bundle side, that is, the length L2 of the loop cord portion a2 becomes longer, and the bundle tightness can be tightened. In other words, just before the end of knot formation, the two strings from the string holder 10 are connected to the knot building 11.
Since it has to slide sideways toward the tip side in the inside, when the movable claw 10B is closed, the fixed and movable claws 1 are
It is important that the string is not completely clamped and fixed by 0A and 10B, but that it is clamped so that it can slide when a lateral force of a predetermined strength acts. Therefore, it is convenient that the friction coefficients of the inner surfaces of the fixed claw 10A and the movable claw 10 are not so small.

Therefore, in the present application, by utilizing the fact that the surface is smoothed by performing the plating process, it is suitable for the fixed claw except for the string holding surface facing the movable claw and for the fixed claw in the movable claw. Since the plating processing is performed on the portion excluding the string holding surface, both the above and the above requests can be realized and the binding error can be further reduced.

[0010]

As a result, by thoroughly studying the linking operation between the nodule building and the string when the nodule is activated, it is possible to make a mistake in binding due to a relatively simple modification in which only the outer surface portion of the nodule building is plated. It has been possible to provide a preferable binding device that further reduces the risk of

[0011]

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 operated by the packer 7 for scraping grain culms, the sensing door 8 for sensing the focusing pressure of the grain culms scraped by the packer 7, and the operation of 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 shown.
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.

FIG. 12 shows a state in which the state shown in FIG. 3 is being changed 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.

As shown in FIGS. 9 to 11, the fixed claw 10A is provided.
A portion of the movable claw 10B excluding the string holding surface 14 facing the movable claw 10B and a portion of the movable claw 10B excluding the string holding surface 16 facing the fixed claw 10A are subjected to hard chrome plating. The hard chrome plating is characterized in that the surface is plated smoothly and the wear resistance is great, and as described in the section "Operation", it matches the function of the knot building 10.

Further, in the actual plating treatment, the movable claw 10B is closed with respect to the fixed claw 10A in the plating solution in the assembled set state shown in FIG. 11, and the current is supplied in the assembled set state. . Then, in the plating treatment, since the throwing power to the recessed portion is poor, the both string holding surfaces 14 and 16 in the recessed positions are not plated, and the plating surface shown in FIG.
As shown in, the plating process can be performed only on the outer surfaces of the fixed and movable claws 10A and 10B. Other types of plating include nickel plating, which has excellent surface smoothness, and gold plating, which has excellent wear resistance and corrosion resistance.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations 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 11 String Holder 14 String Clamping Surface 16 String Clamping Surface

Claims (1)

[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 the fixed claw (10A) is directed to the fixed claw (10A) of the movable claw (10B) excluding the string holding surface (14) facing the movable claw (10B). An agricultural binding device in which a portion other than the string holding surface (16) is plated.