JPH049285Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a string threading mechanism of a binding device installed in a combine harvester, a binder, etc. Regarding the technology that passes.

[Conventional technology]

Conventionally, as the string passing mechanism of the above-mentioned binding device, a pipe was arranged along the string supply path to form the string supply path (for example,
56-32206).

[The problem that the idea aims to solve]

However, in this case, threading the cord through the pipe had to be done manually, which resulted in a heavy workload, and the pipe had to be threaded between devices that were placed in close contact with each other. In many cases, the straps were placed in parallel, making the task of threading the string even more complicated.

An object of the present invention is to provide a device that allows threading to be performed with good workability and also allows for easier threading of the string from the opening on the side of the pipe binding portion to the needle.

[Means to solve the problem]

The characteristic configuration of the present invention is such that the pipe forming the string supply path to the needle extends from the vicinity of the string reel storage section to the vicinity of the binding section, and the opening on the binding section side faces the string passing hole of the needle. At the same time, a pressure gas jet nozzle is arranged at the end of the pipe string supply side, and a gas flow jetted into the pipe from the nozzle causes the string paid out from the string reel storage section to be passed through the pipe. and the string passing hole is configured to be fed out to the needle, and both the vertical width and the horizontal width of the string passing hole are formed to be larger than the inner diameter of the binding part side opening of the pipe,
Its effects are as follows.

[Effect]

In other words, as mentioned above, since the openings at both ends are set and the nozzle is provided, when threading the string, only the tip of the string from the string reel is inserted into the opening on the string supply side of the pipe. Just by inserting it and supplying pressure gas to the nozzle, the string is drawn into the pipe as the pressure gas flows at high speed toward the opening on the side of the binding part, and receives the propulsive force of the pressure gas. , the string can protrude from the opening on the binding side of the pipe and pass through the string through hole of the needle.

Moreover, the string that is discharged together with the ejected gas flow from the opening on the side of the pipe binding part enters the string passing hole of the needle with an impact, but the string passing hole is larger than the inner diameter of the opening on the side of the binding part of the pipe. It's large, so it's easy to get into it.

[Effect of idea]

As a result, there is no need to manually pass the string through the pipe toward the outlet, and by simply enlarging the string threading hole, the string can be automatically threaded through the needle threading hole. It is possible to smoothly insert the pipe, and there is also the effect that it is not necessary to precisely position the opening on the binding part side of the pipe and the string passage hole of the needle.

〔Example〕

As shown in FIG. 3, an engine 1 is mounted at the rear of the machine, and a lifting device 3, a reaping device 4, 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.
Binding device A that binds and releases harvested grain culms on the right side of the machine
The binder is made up of:

As shown in FIG. 1, the tying device A consists of a knot building 5, a string holder 6, a needle 8 for wrapping the tying string 7a around the grain culm, a rotary door 9, etc. The reaped grain culm is tied together with a string 7a that is let out from a roll-shaped winding string 7 placed in the reel storage part B, and the tied grain culm is discharged out of the machine by the rotation of the revolving door 9. There is.

In addition, a supply side opening 10a and a binding part side opening 1 are provided 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.
0b is formed at both ends, and a bent string guide pipe 10 is arranged to form a string supply path.

As shown in FIG. 2, a member 11 having a flap-shaped opening 11a is attached to the supply opening 10a, and a jet nozzle 12 with a narrowed end opening is attached inside the opening 11a. A switching valve 13 near the cylinder head 1a of the engine 1 shown in FIG. By inserting the tip of the string 7a and supplying the fuel exhaust gas generated within the cylinder head to the nozzle 12, the ejector action accompanying the gas injection, together with the gas injected from the nozzle 12 into the pipe, is Outside air is drawn in through the opening 11a, 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 13 is a three-way valve, and the combustion exhaust gas is guided to the muffler 19 in the usual manner by operating the lever 15 except when the string is inserted.

As described above, according to the device of the present invention, the string is inserted through the pipe 10 and into the string passing hole 8a of the needle 8 by simply inserting the end of the string into the latch-shaped opening 11a and operating the valve 13. Therefore, compared to the case where the string is threaded through the string threading hole 8a manually,
By paying special consideration to the relative size and positional relationship between the binding part side opening 10b of the string guide pipe 10 and the string passing hole 8a of the needle 8, the following steps are taken to ensure that a good string passing action is always obtained. It is composed of

First, as shown in FIG. 6, the inner diameter a of the pipe 10 is smaller than the vertical width b and the horizontal width c of the string passing hole 8a. Therefore, the cord released from the binding part side opening 10b of the pipe 10 is configured to easily pass through the cord passing hole 8a. Further, although the pipe 10 has been given a rust-proof finish and has a smooth inner surface to facilitate the passage of the string, a rust-proof material such as stainless steel may be used instead. Additionally, opening 1
It is advantageous to have the same diameter except for 0a and 10b, and to have a shape with as few sharp bends as possible in order to improve the passage of the string.

Next, since the needle 8 is repeatedly subjected to a relatively large reaction force in the opposite direction during the binding operation, play may occur in the pivot portion thereof, and the stopping position may gradually change over time. If that happens,
Since it becomes difficult for the string to pass through, in order to prevent this, a lever 23 pivoted by a pin 24 is used to move the roller 25 near the string passage hole 8a of the needle 8 in the forward direction, that is,
A spring 28 presses and biases in a direction that cancels out the backlash. As shown in FIG. 7, the hole 8a is enlarged in the direction of movement Y of the needle, and the first pipe 10 is set at position M in FIG. In this way, even if the backlash increases over time, no adjustment is required up to the N position in the figure. If this range is exceeded, the tightening fitting 26 can be moved in the direction of the arrow 27 and reset. 21 in the diagram
The pipe opening 10b is made of a wear-resistant round rod.
This is a guide attached to the metal fitting 26 at a position facing the .

Reference numerals 16 and 17 in the figure are 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 takes up the slack in the string 7a that has been let out. Further, as described above, when threading the string by supplying combustion exhaust gas, the string 7a is pulled out from the string reel 7 in advance, and the string brake 1 is applied to the string 7a.
Do this so that the braking force in step 6 does not apply.

[Another Embodiment] As shown in FIG. 5, a member 11 having a latch-shaped opening 11a is screwed onto the pipe 10, and a nozzle 12 is fixedly installed along the inside of the opening 11a, so that the string of the pipe 10 A supply unit may also be configured.
The valve 13 may be one that supplies the entire amount of combustion exhaust gas to the nozzle 12, or one that supplies only a portion of the combustion exhaust gas.

[Brief explanation of the drawing]

The drawings show an embodiment of the string passing mechanism of the binding device according to the present invention, FIG. 1 is a schematic plan view showing the string passing mechanism, FIG. 2 is a view taken along the line - arrow in FIG. 4 is a vertical side view showing the cylinder part, FIG. 5 is a cross-sectional view showing another example of the nozzle arrangement position, and FIGS. 6 and 7 are a lace threading pipe and a needle lace threading hole. FIG. 8 is a plan view, and FIG. 9 is a side view. 7a... String, 8... Needle, 8a... Needle string passing hole, 10... Pipe, 10b... Pipe binding part side opening, 12... Spout nozzle, 13...
... Valve, B... String reel storage section, C... Binding section, a... Inner diameter of opening on the binding section side of pipe, b...
Vertical width at the needle threading hole, c... Width at the needle threading hole.

Claims (1)

[Scope of utility model registration request] A pipe 10 forming a string supply path to the needle 8
is provided in a state extending from the vicinity of the string reel storage part B to the vicinity of the binding part C, and with the binding part side opening 10a facing the string passing hole 8a of the needle 8, and the cord supply side of the pipe 10. A pressure gas ejection nozzle 12 is disposed at the end, and the nozzle 1
The string 7a drawn out from the string reel storage part B is sent out to the needle 8 through the pipe 10 by the gas flow ejected into the pipe from the string reel storage part B, and the longitudinal width b of the string passing hole 8a is and width c
Both of the string threading mechanism of the binding device are formed larger than the inner diameter a of the binding part side opening 10a of the pipe 10.