JPH049287Y2 - - 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.

[Prior Art] Conventionally, as a 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, as disclosed in Japanese Patent Application Laid-Open No.
56-32206).

[The problem that the idea attempts 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.

Moreover, there is no mention of where the openings at both ends of the pipe should be installed, so no consideration is given to making it easier to insert the end of the string into the pipe opening or to remove the string from the pipe outlet. Tenakatsuta.

An object of the present invention is to provide a cord threading device that can be threaded with good workability.

[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 pressurized gas jetting nozzle is arranged at the end of the string supply side of the pipe, and a gas flow jetted into the pipe from the nozzle causes the string paid out from the string reel storage part to be drawn out from the pipe. The pipe is configured such that both openings at both ends of the pipe are located near one lateral end of the aircraft body, and both openings at both ends face toward the same lateral side of the aircraft body. is formed into a U-shape in plan view, and 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 be passed through the opening on the side of the binding part of the pipe to the string insertion hole of the needle.

Moreover, since both openings of the pipe are installed near one side edge of the fuselage, the degree to which other equipment is placed in close proximity to the openings is smaller than in the center of the fuselage. The work after inserting the string and removing the string can be done easily.

Furthermore, since both openings of the pipe face the same lateral side of the machine, the work of inserting the string into the string supply side opening of the pipe and the work of removing the string from the binding part side opening can be done from the same lateral side of the machine. It can be done at once.

[Effect of idea]

As a result, there is no need to manually thread the string inside the pipe towards the outlet, and there is no need to manually insert the string into the opening on the string supply side of the pipe, and there is no need to manually thread the string through the opening on the binding side of the pipe. The work of pulling out the string can also be done easily without the need to move the body each time, or with less movement, and the work burden on the worker can be significantly reduced.

〔Example〕

As shown in FIG. 6, an engine 1 is mounted at the rear of the machine, and a lifting device 3, a reaping device 4, and
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, and the like. 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.

Furthermore, 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 insertion hole 8a of the needle 8 in the stop position.
0b at both ends, and as shown in FIG. 2, the opening positions of these openings 10a and 10b are at one side end of the fuselage, and the directions of opening are both toward one side of the fuselage. A string supply path is formed by disposing a pipe 10 shaped into a U-shape in plan view.

A member 11 having a flap-like 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, and the nozzle 12 and the cylinder head 1a shown in FIG. 5 are attached. A valve 13 attached to the holder is connected to the holder via a flexible pipe 14.

The pipe 10 is made of stainless steel to prevent rust from forming on its inner surface, and is manufactured to have a smooth inner surface with the same diameter up to the opening 10b on the binding portion side. Also, as shown in Figure 4,
The inner diameter D of the binding part side opening 10b is set smaller than the diameter E of the minimum diameter portion of the string insertion hole 8a of the needle 8, so that the string can be threaded smoothly.

The string 7 from the string reel 7 is inserted into the opening 11a of the member 11.
After inserting the tip of a, high-pressure combustion gas generated in the cylinder head is supplied to the nozzle 12 via the valve 13, and the gas, that is, the gas is The outside air flows through the opening 11a due to the ejector action accompanying the injection of
through the string 7 with a relatively small amount of gas.
a is inserted to the string passing hole 8a of the needle 8.

The needle 8 wraps the string 7a around the grain culm group so as to embrace the grain culm group during the binding operation.
The needle 8 receives a reaction from the grain culm group in the backward direction, and the pivot portion 8b of the needle 8 tends to rattle in this direction. Therefore, Figures 3 and 4
As shown in the figure, a swinging piece 15 that comes into contact with the rear surface of a roller 8c that is pivotally supported at the tip of the needle 8, a support member 16 that pivotally supports this swinging piece 15, and elastically pressing the swinging piece 15. A stopper S made of a coil spring 17 is attached to the fuselage side via a bracket 18 and bolts 19, 19, and the stopper S contacts the roller 8c from behind to regulate the stop position of the needle 8 to a constant position, The tip end string passing hole 8a of the needle 8 is in close contact with the binding part side opening 10b, so that the string can be threaded reliably.

As shown in FIG. 3, the bracket 20 and the screws 21, 2
By attaching the pipe 1 to the support member 16 via the string threading hole 8a so that the position can be adjusted,
0 can be easily positioned.

Note that the valve 13 is configured to be opened by a lever 22, and the high-pressure combustion gas is supplied by operating the lever 22 after starting the engine 1. 23 and 24 in the figure apply braking force to the string 7a that is let out from the string reel 7. This is a string brake and a slack-removal lever that tensions the let-out string 7a. When threading a string through the pipe 10, the string 7a is pulled out from the string reel 7 in advance so that the braking force of the string brake 23 does not act on the string 7a when the string 7a is pulled into the pipe 10. .

[Another Embodiment] In addition to the embodiments described above, the present invention may be applied to, for example, a binding device for a combine harvester.

[Brief explanation of drawings]

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 perspective view of the pipe, and FIG. 3 is a partially cutaway view showing the stopper. FIG. 4 is a side view showing needle threading holes, etc., FIG. 5 is a vertical sectional side view of the cylinder head, and FIG. 6 is an overall side view of the binder. 7a... String, 8... Needle, 8a... Needle string passing hole, 10... Pipe, 10a, 10b
...Opening at both ends of the pipe, 12...Blowout nozzle, B
... String reel storage section, C... Binding section.

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 pipe 10, and the openings 10a, 1 at both ends of the pipe 10
The pipe 10 is formed into a U-shape in plan view so that both openings 10a and 10b are located near one lateral end of the fuselage, and both openings 10a and 10b face the same lateral side of the fuselage. Strap threading mechanism of the binding device.