JPH0319703Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention monitors the string threading mechanism of the binding device installed in combine harvesters, binders, etc., and more specifically, monitors the string feeding path from the string reel etc. to the binding device. Concerning the technique of threading strings.

[Conventional technology]

The string threading mechanism of the conventional binding device involves sandwiching one end of the rolled string between a pair of left and right rollers, and driving one of the left and right rollers with a motor.
The string is forcibly drawn out and the string is passed through the pipe and passed through the string hole of the needle (for example, Japanese Patent Application Laid-open No. 32206/1983).

According to such a structure, since the frictional resistance of the pipe and the string are pushed out from behind, the longer the string that is let out, the more likely the middle part becomes loose, making it impossible to unwind the string well.

Therefore, in order to eliminate the above-mentioned conventional drawbacks, the present applicant injected pressurized gas, for example, high-pressure combustion gas produced by an engine explosion, into the pipe through which the string is passed, and the ejector action generated at that time caused the string to be pulled out. I developed and proposed something that would pass through (Utility Application No. 32797, 1983).

According to such a structure, the presence of fluid between the string and the pipe reduces pipe resistance, and since the string is sucked by the ejector action, the middle part of the string does not loosen. The string can be drawn out easily.

[Problem that the invention attempts to solve]

However, with such a structure in which the string is fed out using pressurized gas, the axis of the nozzle may be slightly misaligned with respect to the axis of the pipe, and the lattice-shaped member that exerts the ejector effect may be placed on the back side. However, the problem that arises is that the conveying force of the string decreases even if the string penetrates a little too much into the string, but the method proposed earlier is to place the nozzle along the axis of the inner surface of the strap-like member and braze it. Because it was something to do,
There was a drawback that it was easy for misalignment to occur during brazing.

The present invention aims to solve the above-mentioned drawbacks by devising a structure for attaching the nozzle to the flap-shaped member.

[Means for solving problems]

The characteristic configuration of this invention to achieve the above purpose is as follows:
The jet nozzle is constituted by an L-shaped nozzle that comes into contact with the opening end surface of the flap-shaped member, and the inner surface of the flap-shaped member is formed with a nozzle fitting groove into which the jet nozzle is inserted along the axial direction. be.

[Effect]

By fitting the nozzle into the nozzle fitting groove formed on the inner surface of the flap-shaped member and applying the nozzle to the end face of the flap-shaped member, the axis can be positioned and the inner part of the nozzle relative to the flap-shaped member can be positioned. No errors occur when measuring and fixing the nozzle.

[Effect of idea]

Therefore, the nozzle can be attached to the strap-shaped member at an appropriate position, and the string can be conveyed in a good manner.

〔Example〕

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

As shown in Fig. 6, an engine 1 is mounted at the rear of the machine, a hoisting device 3 and a reaping device 4 are mounted at the front of the machine, which runs on a pair of left and right running wheels 2, and harvested grain culms are tied to the right side of the machine. A binder is constructed by providing a binding device A for releasing the binder.

As shown in FIG. 1, the binding device A includes a knot building 5, a string holder 6, a needle 8 for wrapping a binding string 7a around the grain culm, a revolving door 9, etc.
The harvested grain culm is tied together with the string 7a fed out from the rolled cord 7 placed in the string reel storage part B at the back of the working section of the machine, and the tied grain culm is machined by the rotation of the revolving door 9. It is configured to emit to the outside.

Further, a supply side opening 10a and a binding part side opening 10b are respectively formed between the string reel storage part B and the binding part C, that is, the tip string passing hole 8a of the needle 8 in the stop position, and a bending part. A string supply path is formed by disposing a formed string guide pipe 10.

As shown in FIGS. 2 to 4, a flap-like member 11 having a flap-shaped opening 11a is attached to the supply opening 10a, and a jet nozzle 12 having a narrowed end opening is inserted inside the opening 11a. The installation position is set and fixed as shown below.

That is, a nozzle fitting groove 11b is formed along the axial direction on the inner surface of the flap-like member 11 to position the nozzle in the ejection direction, and the jet nozzle is positioned so as to come into contact with the opening end surface of the flap-like member 11. 12 was formed into an L shape to position the inner area. The jet nozzle 12 is fixed via a nozzle fixing fitting 13. The flap-like member 11 is formed by aluminum die casting in order to achieve dimensional accuracy of the nozzle fitting groove 11b. Further, the bending angle of the jet nozzle 12 is configured to be slightly smaller than the bending angle θ of the bent end surface on the opening side of the flap-like member 11, so that when the nozzle fixing fitting 13 is tightened and fixed with the bolt 14, the nozzle 12 is formed into a groove. 11b so that the tip does not rise up along the bottom surface.

Further, the nozzle 12 and the engine 1 shown in FIG.
The string 7 from the string reel 7 is connected to the valve 15 attached to the cylinder head 1a through the flexible pipe 16.
By inserting the tip of a and supplying the high-pressure combustion gas generated within the cylinder head to the nozzle 12 through the valve 15, the gas, that is, along with the gas injected from the nozzle 12 into the pipe, The outside air flows through the opening 1 due to the ejector action accompanying the gas injection.
The string 7a is drawn in through the needle 1a, and the string 7a is inserted into the string passage hole 8a of the needle 8 with a relatively small amount of gas. The valve diameter and pipe diameter of the valve 15 and pipe 16 are selected so as to prevent the string from being threaded if the air cleaner becomes clogged, and to have the function of checking for clogging of the air cleaner.

That is, a valve 15 is provided in the cylinder head 1a of the engine 1, and the explosion pressure is sent to the wrapper-like member 11, and the jet energy is used to convey the string to the string passing hole 8a of the needle.
Since the engine is operated with gas leaking, the engine is more likely to stop due to clogging of the air cleaner, so-called engine stalling. Therefore, if the air cleaner is clogged, the engine cannot be driven, and by selecting the valve diameter and pipe diameter, it is possible to check for air cleaner clogging, which is difficult to notice.

The valve 15 is opened by a lever 17, and in order to supply high-pressure combustion gas, the lever 1 is pressed after starting the engine 1.
This is done by operating 7, or 18 and 1 in the figure.
Reference numeral 9 denotes a string brake that applies a braking force to the string 7a that is let out from the string reel 7, and a slack-removal rod that tensions the string 7a that is let out.

In addition, when threading a string through the pipe 10, the string 7a is pulled out from the string reel 7 in advance, and when the string 7a is pulled into the pipe 10, the string brake 1 is
This is done so that the braking force of 8 does not act on the string 7a.

In the above embodiment, the nozzle stopper 13 is attached to the nozzle 12 and fixed with the bolt 14, but the nozzle abutment fitting 13
It is also possible to weld the nozzle 12 to the nozzle 12 in advance and fix it with the bolt 14.

[Another example]

In the above embodiment, the nozzle fitting groove 11b is formed integrally when molding the flap-like member 11, but it may be formed by grooving later after molding the flap-like member 11.

[Brief explanation of the drawing]

The drawings show an embodiment of the string passing mechanism of the binding device according to the present invention, in which Fig. 1 is a partially cutaway plan view, Fig. 2 is a longitudinal cross-sectional view of the latches-shaped member, and Fig. 3 is a cross-sectional view of the latches-like member. 4 is a side view showing the nozzle installed state, FIG. 5 is a longitudinal sectional side view of the cylinder head, and FIG. 6 is an overall side view of the binder. 7a... String, 8... Needle, 8a... String passing hole, 10... Pipe, 10b... Binding part side opening,
DESCRIPTION OF SYMBOLS 11... Laptop-shaped member, 11a... Laptop-shaped opening, 11b... Nozzle fitting groove, 12... Ejection nozzle, B... String reel storage part, C... Binding part.

Claims (1)

[Claims for Utility Model Registration] Pipe 1 forming a string supply path to needle 8
0 from the vicinity of the string reel storage part B to the vicinity of the binding part C, and the binding part side opening 10
B is provided so as to face the string passing hole 8a of the needle 8, and a wrapper-like member 11 having a wrapper-shaped opening 11a is provided at the end of the string supply side of the pipe 10, and a pressurized gas is provided in the opening 11a. A jet nozzle 12 is arranged, and this nozzle 12
In the string passing mechanism of the binding device configured to feed the string 7a drawn out from the string reel storage part B to the needle 8 via the pipe 10 by a pressure gas flow ejected into the pipe from the spout nozzle 12. is composed of an L-shaped nozzle that comes into contact with the opening end surface of the flap-shaped member 11, and a nozzle fitting groove 11b is formed on the inner surface of the flap-shaped member 11, into which the jet nozzle 12 is inserted along the axial direction. The string threading mechanism of the binding device. The nozzle fitting groove 11b is provided with a flap-shaped member 11.
A string threading mechanism of a binding device according to claim 1, which is integrally formed at the time of formation.