JPH0468203B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a string threading device in a binding device used for binding harvested grain culms in a binder or for binding waste straw in a combine harvester or a harvester.

[Conventional technology]

Conventionally, there has been a technique disclosed in, for example, Japanese Patent Application Laid-open No. 32206/1983, as a technique for passing the string from the winding string to the binding portion without error and in an easy-to-operate manner. This technology uses a string guide roller and a pipe to form a string supply path that extends from the vicinity of the winding string storage section to the vicinity of the needle, and a string feed roller is provided at the starting end of the string supply path so that it can be driven freely. is configured to be fed into the supply path by the roller.

[Problem that the invention seeks to solve]

However, the above-mentioned string threading technique cannot be used when the strings currently used on the market, such as jute, hemp, or resin, are soft and weak, or when the string supply path is bent. This was not a practical method because the string could get caught in the middle of the supply path, making it impossible to thread the string through.

An object of the present invention is to provide a lace threading device that can easily, reliably and quickly thread a lace even if the lace is soft and weak.

An object of the first invention is to provide a string threading device that can reliably and quickly pass a string through a predetermined string supply path with a simple operation by effectively utilizing a string threading rod. Moreover, in addition to the above-mentioned object, the object of the second invention is to further promote labor saving in the entire stringing operation.

[Means for solving problems]

The first aspect of the invention is characterized in that the string threading rod is provided with a string locking part at the tip so that it can be bent and deformed, and the string threading rod can be freely extended and retracted by aligning it within the string threading rod guide pipe. In addition,
A feature of the second invention is that, in addition to the features of the first invention, the outlet of the guide pipe is provided near and opposite to the string passing hole at the tip of the string supply needle at the retraction stop position. . Its actions and effects are as follows.

[Effect]

That is, as mentioned above, since the bendable and deformable string threading rod having the string locking part at the tip is provided so as to be able to be extended and retracted, the string can be bent by locking the string to the locking part. With the operation of simply pulling out the rod,
Even if the string is weak or the string guide pipe is bent, the string will continue to deform along with the string and move along the string guide pipe. It is sent by the threading rod and reaches the outlet of the threading rod guide pipe.

In this case, if the outlet of the string passing rod guide pipe is installed opposite to the string passing hole of the string supply needle, the string sent out from this pipe outlet together with the string passing rod will be directly inserted into the string passing hole of the needle. It is inserted.

〔Effect of the invention〕

As explained above, according to the first invention, the string is stopped by the string passing rod which can be bent and deformed and moves along the string passing rod guide pipe, and is sent to the exit side. Even if the string is straight or the string supply path is bent, the string can now be reliably and quickly guided through the pipe and guided out from a predetermined outlet.

Furthermore, according to the second invention, since the string that comes out from the guide pipe outlet of the string threading rod together with the string threading rod is directly inserted into the string passing hole of the needle, there is no need for the troublesome string passing through the needle. It has become possible to save labor in the entire threading process.

As described above, the present invention has made it possible to reliably and quickly perform string threading, which has been a tedious task for the operator, and to simplify the string threading work.

〔Example〕

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

As shown in Fig. 7, an engine 1 is mounted at the rear of the machine, which runs on a pair of left and right running wheels 2.A lifting device 3 and a reaping device 4 are located at the front of the machine, and a bundling device for bundling and releasing the harvested grain culms is located on the right side of the machine. Device A is attached to form a binder.

As shown in FIGS. 3 and 6, the tying device A includes a knot building 5a, a tying part 5 consisting of a string holder 5b, a string supplying needle 7 for winding and soaking a tying string 6a around the grain culm, and a rotating type The reaped grain culm is bound by a string 6a fed out from a winding string 6 placed in a string storage section B behind the working section of the machine, which is composed of a door 8, etc., and is also tied by the rotation of the revolving door 8. Eject the grain culm out of the machine.

A front end opening 9a and a rear end opening 9b are respectively formed between the string storage part B and the tip string passing hole 7a of the needle 7 in the stopped position, and a bent string passing rod guide pipe 9 is arranged. A cord supply path is formed by installing the cord.

As shown in FIGS. 1, 2, 3, 5, and 6, in this binder, when replacing the winding string 6, etc., the string 6a from the winding string 6 is guided A lace threading device C for passing the needle 7 through the tip lace threading hole 7a through the pipe 9 is mounted. To explain, the lace threading device C includes a lace threading rod 10 that is made of sheet steel and is bendable and deformable, and a V-shaped lace locking portion 10a is cut out at the tip thereof, and the lace threading rod 10 is wound up and stored. At the same time, it is composed of a lace threading rod ejection/retraction mechanism D that lets out the lace threading rod 10, a string loading section 11, and a lace threading rod guide pipe 9. part 12, which is directly connected to the rotating shaft 12a of the storage part 12 and urges the string threading rod 10 in the winding direction; A pair of upper and lower feed-out rollers 14a, 14b that feed out the string threading rod 10, a gear transmission unit 16 that decelerates the driving force from the electric motor 15 and constantly drives and rotates the upper roller 14a;
A coil spring 17 for frictionally transmitting the driving force from the gear transmission unit 16 to the upper roller, an arm 19 that freely rotatably supports the lower roller 14b and is pivotally supported on the shaft 18; A spring 20 that biases the roller 14b, and the shaft 18
It consists of an operating lever 21 attached to the end of the. Then, as shown in FIG. 1, the wound cord 6
After the string 6a is inserted and set in a position intersecting the advancing direction of the string threading rod 10, as shown in FIG. 2, the operation lever 21 is operated to the position shown in the figure (on). Therefore, the string threading rod 10
The string 6a locked to the string locking part 10a passes through the string passing rod guide pipe 7a together with the string passing rod 10. Furthermore, after this, by releasing the lock of the string 6a and returning the operating lever 21 to the position shown in the figure (off), the string passing rod 10 is automatically moved by the operation of the rewinding section 13. It is stored backwards.

Incidentally, the rivet-shaped stopper 22 provided at the tip of the lace threading rod 10 that is retracted and stored comes into contact with the opening edge of the lace threading rod insertion hole Ca formed in the casing of the lace threading device C, so that when the lace threading rod 10 is retracted, The position of is determined. In addition, the inner diameter of the string guide pipe 9 is set to about 7 mm, the width of the string thread rod 10 is set to about 5 mm, and the cross-sectional shape of the string thread rod 10 is set to be arcuate as shown in FIG. It is curved, the string passing rod 10 does not bend in the string passing rod guide pipe 9 when the string is threaded, the string 6a from the front end outlet 9a can be fed out in a straight line, and the section modulus is high. It is becoming.

In addition, 23 in the figure is the string 6 that is paid out from the winding string 6.
A is a brake that applies a braking force, and 24 is a slack remover for the string 6a, both of which are not used when operating the string threading device C, but are used when the binding device A is operating.

[Another example]

In this embodiment, a steel strip is used for the string threading rod 10, but instead of this, a material that does not buckle, such as a spring wire or a resin rod, may be used.
The zero may be fed out using the driving force of the engine 1 of the aircraft or manually. Also, string threading rod 10
The rewinding may be performed by driving or manually instead of using the urging force.

The present invention eliminates unnecessary extension of the string threading rod by interlocking the string threading rod extension/retraction mechanism D with a sensor or a timer and controlling the amount of drive movement thereof.
The present invention may be configured to be more easily handled, and the present invention may be applied to a binding device equipped with a combine harvester or a harvester in addition to a binder.

[Brief explanation of the drawing]

The drawings show an embodiment of the string threading device of the binding device according to the present invention, FIG. 1 is a longitudinal cross-sectional view of the device, FIG. 2 is a cross-sectional view of the device, and FIG. 3 is a cross-sectional view of the device when the device is operated. A schematic diagram of the state, Fig. 4 is a sectional view of the string threading rod, Fig. 5 is a plan view of the tip of the string threading rod, Fig. 6 is a perspective view showing this device and the binding device, and Fig. 7 is an overall side view of the binder. It is a diagram. 6... Winding cord, 7... Needle, 7a... Strap passing hole, 9... Strand passing rod guide pipe, 9a... Outlet, 10... Strand passing rod, 10a... Strand locking portion, D
...String rod egress/retraction mechanism.

Claims (1)

[Scope of Claims] 1. The string threading rod 10 is provided with a string locking portion 10a at the tip so as to be bendable and deformable, and the string threading rod 10 can be freely extended and retracted by the stringing rod extension and withdrawal mechanism D. The string threading device of the binding device is characterized in that a string threading rod guide pipe 9 is disposed between the string threading rod advancing and retracting mechanism D and the string supplying needle 7. 2. The lace threading rod 10 is provided with a lace locking portion 10a at the tip so as to be bendable and deformable, and the lace threading rod 10 can be freely extended and retracted by the lace threading rod extension and retraction mechanism D, and the lace threading rod 10 can also be used as a lace threading rod guide. A pipe 9 is disposed between the string passing lever egress/retraction mechanism D and the string supplying needle 7, and the outlet 9a of the string passing rod guide pipe 9 is connected to the string passing hole at the tip of the string feeding needle 7 which is at the retraction stop position. A string threading device for a binding device, characterized in that it is provided facing each other near 7a. 3. Claim 1 or 2, wherein the string locking portion 10a is formed as a V-shaped notch recess.
A string threading device for the binding device described in 2.