JPH036046B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a binding device installed in agricultural machines such as binders, combines, and roll balers.

[Conventional technology]

In binders, which are an example of agricultural machinery,
For example, as disclosed in Japanese Patent Application Laid-Open No. 56-32206, a string holder (3C in Fig. 1 of said publication) that clamps the end of a string for binding grain culms, a needle (see 3D in Figure 1 of the above-mentioned publication), and a binding device consisting of a knotter bill (3B in Figure 1 of the publication) for binding strings wound around the grain culms.

[Problem to be solved by the invention]

When the above-mentioned binding device is in the initial state where there is no string at all, the string taken out from the string storage section (1 in Fig. 1 of the above publication) is placed in the string brake (see Fig. 1 of the above publication). 5), deflection absorbing device (6 in Figure 1 of the above publication) and pipe (see 6 in Figure 1 of the above publication)
After threading the thread through 10) in the figure, the threading operation is to thread it through the tip of the needle, and this series of threading operations was all done manually.

In the case of agricultural work, many other devices are placed near the tying device, so the path of the string from the string storage section to the tying device has to be bent at many points to avoid other devices, They are often located in deep areas that are difficult to reach.

Therefore, it is extremely troublesome to manually thread the string, and there are many cases where the string is passed through the wrong position.

Here, an object of the present invention is to make it possible to easily pass the string taken out from the string storage part to the needle without fail.

[Means for Solving the Problems] The present invention is characterized in that the above-mentioned agricultural machine binding device is configured as follows. In other words, the pipe that forms the string supply path to the needle is provided so that it extends from the vicinity of the string storage section to the vicinity of the binding section, and the opening on the binding section side faces the string passage hole of the needle in the retracted position. In addition, the cord is fed out from the cord storage part through the pipe to the needle, and a stopper is provided to receive and support the retracted needle from the rear at the retracted position, and its operation and effects are as follows. It is as follows.

[Effect]

As mentioned above, if a pipe is provided that extends from the string storage part to the string passing hole of the needle, the string in the string storage part can be fed into the pipe from the string supply side opening of the pipe, and the string can be passed through the needle. It will be fed into the string hole.

As mentioned above, in order to ensure that the string guided by the pipe is inserted into the string passing hole of the needle, the needle must be placed at a position (corresponding to the retracted position) opposite the opening on the side of the binding part, which is the exit of the pipe. It is necessary that the string hole is located correctly. However, in the above-mentioned binding device for agricultural machinery, since the needle is reciprocated between a retracted position away from the grain culm and a retracted position so that the needle embraces the grain culm, the string is moved particularly toward the binding position. In this case, the needle is repeatedly subjected to reaction force from the grain culm.

Therefore, the drive shaft of the needle, the link connecting the needle, the arm, etc. are likely to have looseness that causes the needle to move in the backward direction. As a result, when the needle is stopped at the retracted position and the string is inserted into the string passing hole of the needle via the pipe, the entire needle may move back due to the rattling, making it difficult to properly insert the string into the string passing hole. arise.

However, if the stopper of the present invention is provided, the needle will be correctly stopped at a predetermined retracted position even if the above-mentioned rattling occurs, so This will reduce the possibility of misalignment.

〔Effect of the invention〕

As described above, by inserting and feeding the string pulled out from the string storage section through the string supply side opening of the pipe, the string can be fed into the string threading hole of the needle, making it easier to thread the string. It became.

In addition, when the above-mentioned pipe is provided, there is less chance of the needle's string passing hole being misaligned with respect to the opening on the binding side of the pipe, and the work of inserting the string into the needle's string passing hole becomes more reliable. Now I can do it.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in Fig. 4, an engine 1 is mounted at the rear of the machine, a hoisting device 3 and a reaping device 4 are installed at the front of the machine, which runs on a pair of left and right running wheels 2, and a reaping grain culm is mounted on the right side of the machine. A binder, which is one type of agricultural machine, is configured by providing a binding device A that binds and releases the materials.

As shown in FIG. 1, the binding device A includes a string holder 6 that clamps the end of the string 7a, a needle 8 that wraps the string 7a around the grain culm, a knot holder 5 that binds the string 7a wound around the grain culm, It is composed of a revolving door 9 and the like. As shown in FIG. 3 and FIG. 1, a string storage part B is provided above the running wheel 2, and the string 7a drawn out from the rolled string 7 in this string storage part B allows The harvested grain culms are bundled and the grain culms are discharged outside the machine by rotating the door 9.

As shown in FIG. 1, the string storage part B and the binding part C,
That is, between the string passing hole 8a at the tip of the needle 8 in the retracted position, a pipe 10 for guiding the string 7a, which is provided with a string supply side opening 10a and a binding section side opening 10b and is bent and formed, is arranged. A string high pay route has been formed.

A member 11 having a lattice-shaped opening 11a is attached to the string supply side opening 10a, and an ejection nozzle 12 having a narrowed end opening is attached.
is attached inside the opening 11a. Further, the jet nozzle 12 and a valve 13 attached to the cylinder head 1a of the engine 1 shown in FIG. 5 are connected to each other via a flexible pipe 14.

As a result, the tip of the string 7a from the winding string 7 is inserted into the opening 11a of the member 11, and the high-pressure combustion gas generated within the cylinder head 1a is supplied to the injection nozzle 12. Together with the combustion gas injected into the pipe 10, outside air flows into the opening 11 due to the ejector action accompanying the injection of the combustion gas.
a, and the string 7a is sent to the string passage hole 8a of the needle 8 with a relatively small amount of combustion gas.

As shown in FIG. 1, the needle 8 has a retracted position away from the grain culm (a position where the string passage hole 8a of the needle 8 is opposite the opening 10b on the binding part side of the pipe 10), and a tip of the needle 8. is repeatedly driven back and forth between the knot building 5 and the binding position near the string holder 6. When the needle 8 moves to the binding position, the string 7a wraps around the grain culm so as to wrap around the grain culm. At this time, the needle 8 is repeatedly subjected to reaction force from the grain culm, and in this direction. The pivot portion 8b of the needle 8 is likely to become rattled.

Therefore, as shown in FIGS. 2 and 3, a swinging piece 15 that comes into contact with the rear surface of the roller 8c that is pivotally supported at the tip of the needle 8, a support member 16 that pivotally supports this swinging piece 15, A stopper S made of a helical spring 17 for elastically pressing the movable piece 15 is attached to the body side via a bracket 18 and a bolt 19.

As a result, when the needle 8 is stopped at the retracted position (the position where the string passage hole 8a of the needle 8 is opposite the binding part side opening 10b of the pipe 10) as shown in FIG. When the roller 8c comes into contact with the swinging piece 15 of the stopper S, the needle 8 is correctly stopped at the retracted position shown in FIG.

The valve 13 is configured to be opened using a lever 20, and in order to supply high-pressure combustion gas, the lever 2 is used after starting the engine 1.
This is done by manipulating 0. Also, 21 and 2 in the diagram
Reference numeral 2 designates a string brake that applies a braking force to the string 7a that is let out from the winding string 7, and a slack-removal rod that tensions the let out string 7a.

In addition, when threading a string through the pipe 10, the winding string 7
The string 7a is pulled out in advance from the pipe 10 so that the braking force of the string brake 21 does not act on the string 7a when the string 7a is drawn into the pipe 10.

[Another example]

In this embodiment, the combustion gas from the engine was used as the pressurized gas to be supplied to the jet nozzle 12, but the configuration is such that atmospheric air pressurized by a compressor is stored in an accumulator and this pressurized atmosphere is supplied to the jet nozzle 12. It's okay. Also, roll the stopper S to 8
In place of the means for acting on c, the needle 8
The stopper S may be configured to act on the rear end portion, or the stopper S may be configured as a rigid body instead of having a structure in which the stopper S is pressed elastically.

[Brief explanation of the drawing]

The drawings show an embodiment of the binding device for agricultural machinery according to the present invention, and FIG. 1 is a schematic plan view showing the mechanism from the string storage section to the binding device, FIG. 2 is a cross-sectional view of the vicinity of the stopper, and FIG. Fig. 2 is a view taken from the - direction, Fig. 4 is an overall side view of the binder,
FIG. 5 is a longitudinal sectional side view of the cylinder head of the engine. 5... Nodule building, 6... String holder, 7a...
String, 8... Needle, 8a... Needle string passing hole, 10... Pipe, 10b... Opening on the side of the pipe binding part, B... String storage area, C... Binding part, S...
Stopper.

Claims (1)

[Claims] 1. A string holder 6 that holds the end of the string 7a, a knot holder 5 that binds the string 7a wrapped around the grain culm, and a binding position where the string 7a is wrapped around the grain culm and from the grain culm. This is a binding device for an agricultural machine equipped with a needle 8 that is reciprocally driven to and from a separate retracted position, in which a pipe 10 forming a string supply path to the needle 8 is connected from the vicinity of a string storage section B to the binding section. The cord 7 extended from the cord storage section B is provided so that the opening 10b on the binding part side faces the cord passage hole 8a of the needle 8 in the retracted position.
A bundling position of an agricultural working machine, which is configured to send out a needle 8 through a pipe 10 and is provided with a stopper S for receiving and supporting the retracted needle 8 from the rear at a retracted position. 2. The binding device for an agricultural working machine according to claim 1, wherein the stopper S elastically presses the needle 8 forward.