JPH0427803B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mechanism for automatically threading strings in a binding device such as a binder.

[Conventional technology]

As the above-mentioned string passing mechanism, the present applicant first forms a string supply side opening near the string reel storage section,
In addition, a pipe with an opening on the binding part side facing the string passing hole of the needle is provided to form a string supply path,
In addition, a string brake is provided between the string reel storage section and the string supply side opening of the pipe, and a pressurized gas jet nozzle is provided in the string supply side opening, and a valve provided in the pressurized gas supply section is opened. A device was proposed in which a pressurized gas is ejected into a pipe by an operation, and this pressurized gas flow is used to send out a string from a string reel storage section to a needle via the pipe (Japanese Patent Application No. 170,743/1982).

[Problem that the invention seeks to solve]

In the string passing mechanism configured as described above, when threading the string, the amount of string to be inserted into the pipe is pulled out in advance from the string reel just before the opening on the string supply side of the pipe, and the tip of the string pulled out is After inserting the jet into the opening, a step of supplying pressurized gas to the jet nozzle is required.

That is, by pulling out the string, the string is not subjected to resistance from the string brake when feeding into the pipe. However, since the amount of string to be pulled out depends on the operator's intuition, it is easy for the string to be pulled out too much or too little.If the string is not pulled out enough, it is naturally impossible to thread the string in the specified manner, and if the string is pulled out too much, If the string is left hanging, there is a risk that the string may sag and get caught in other devices, or that a kink may be formed or untwisted when the loop portion of the sagging string is stretched.

An object of the present invention is to eliminate the need for a pulling-out operation when feeding a string into a pipe through reasonable modification, and to prevent the occurrence of the above-mentioned problems caused by excessive pulling-out or insufficient pulling-out.

[Means for solving problems]

A feature of the present invention is that it is provided with a linkage mechanism that operates in a direction to loosen the string brake in conjunction with the opening operation of the valve, and its operation and effects are as follows.

[Effect]

In other words, if the above-mentioned linkage mechanism is composed of a rod 16, a crank 17, and a fork 18 linked to the operating lever 14a of the valve 14, as shown in FIG. The brake 11 will be operated in the direction of loosening it.

〔Effect of the invention〕

Therefore, with a relatively simple modification to provide a linkage mechanism, there is no need to take the trouble of pulling out the string in advance.
Moreover, the string could be threaded smoothly and quickly without any resistance from the string brake, and any problems caused by too much or insufficient string pulling out could be completely eliminated.

〔Example〕

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

As shown in FIG. 4, an engine 1 is mounted on the rear of the machine, a lifting device 3 and a reaping device 4 are mounted on the front of the machine running on a pair of left and right traveling wheels 2, and a harvested grain culm is mounted on the right side of the machine. A binder is constructed by providing a binding device A for binding and releasing the materials.

As shown in FIG. 2, the binding device A consists of a knot building 5, a string holder 6, a needle 8 for wrapping a binding string 7a around the grain culm, a rotary door 9, etc., and is located behind the working section of the machine. The harvested grain culms are tied together with a string 7a fed out from a rolled string 7 placed in the string reel storage part B of the machine, and the tied grain culms are discharged outside the machine by the rotation of the revolving door 9. It is configured like this.

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 A, that is, the tip string passing hole 8a of the needle 8 in the stop position. A bent string guide pipe 10 is arranged to form a string supply path, and a string reel storage part B and a string supply side opening 10 are provided.
A string brake 11 is provided between the

As shown in FIG. 2, a member 12 having a flap-shaped opening 12a is attached to the supply side opening 10a, and a jet nozzle 13 having a narrowed end opening is attached in parallel with the member 12, Further, the nozzle 13 and a valve 14 attached to the cylinder head 1a of the engine 1 shown in FIG.
are connected to each other via a flexible pipe 15, and the tip of the string 7a from the string reel 7 is inserted into the opening 12a of the member 12, and the operation lever 14 of the valve 14 is connected.
By the opening operation of step a, the high pressure combustion gas generated in the cylinder is supplied to the nozzle 13.
The string 7a is inserted into the string passage hole 8a of the needle 8 by the gas injected into the pipe from the needle 3 and the outside air drawn into the pipe by the ejector action accompanying the gas injection.

Further, in the string passing mechanism, when the string 7a is drawn into the pipe, the string brake 11 is inserted into the string 7a.
It is designed not to provide any resistance to the To explain, the operation lever 14a and the string brake 11
In between, a linkage mechanism C is interposed as follows, which operates the string brake 11 in the direction of loosening it only when the valve 14 is opened.

The linkage mechanism C includes a rod 16 connected to one end of the operating lever 14a, a crank 17 connected to the other end of the rod 16, and a fork 18 that is operated by the crank 17 in a direction to loosen the string brake 11. It is structured as follows. Then, by operating the operating lever 14a in the direction of opening the valve 14, the string brake 11 is loosened via the linkage mechanism C.

The string brake 11 includes a pair of upper and lower plates 11a and 11b that sandwich the string 7a, a coil spring 11c that presses the upper plate 11a, and a spring receiver 1.
1d, a bolt 11e and a nut 11f for setting the clamping pressure of the string 7a, and the fork 18 engages with the upper plate 11a and operates in a direction to separate the plate 11a from the lower plate 11b. And what is indicated by 19 in the figure is
This is a slack-taking rod that acts on the string 7a during the binding operation.

Further, as shown in FIG. 3, a stock dispensing rod 20 is attached in a cantilevered manner to the outside of the bundling device A, and a crank-shaped tip 20b of the stock discharging rod 20 extends along the rod. It is attached to the proximal end 20a so as to rotate about its axis, and is configured to be able to change the level of the distal end 20b. Incidentally, the rotating structure consists of the pivot brackets 21, 21 and the spring 2.
2. It consists of an engaging pin 23, and by engaging the engaging pin 23 in a groove 21a formed in the bracket 21, the tip can be fixed in two positions.

[Another example]

In the present invention, in addition to the embodiments described above, the linkage mechanism C may be electrically configured with a limit switch that detects the opening operation of the operating lever 14a, a solenoid that operates to loosen the string brake 11, or the like. Also, the pressure gas supply section may be located other than the cylinder head of the engine.
It may also be configured with a compressor.

[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 side view showing the interlocking mechanism, FIG. 2 is a plan view of the string passing mechanism, and FIG. 3 is a diagram showing the rotation of the stock withdrawal rod. Partially cutaway side view showing dynamic structure, 4th
The figure is an overall side view of the binder. 1a... Pressure gas supply unit, 7a... String, 8...
...Needle, 8a... Needle threading hole, 10
... Pipe, 10a, 10b ... Openings at both ends of the pipe, 11 ... String brake, 13 ... Spout nozzle,
14... Valve, B... String reel storage section, C...
Coordination mechanism.

Claims (1)

[Claims] 1 Near the string reel storage section B, there is a string supply side opening 1
0a, and a binding part side opening 10b facing the string passing hole 8a of the needle 8.
0 to form a string supply path, a string brake 11 is provided between the string reel storage part B and the string supply side opening 10a of the pipe 10, and a pressurized gas jet nozzle 13 is provided at the string supply side opening 10a. and
Pressure gas is spouted into the pipe by opening the valve 14 provided in the pressure gas supply section 1a, and the string 7a is drawn out from the string reel storage section B by this pressure gas flow.
It is a string passing mechanism of a binding device configured to send out a string through a pipe 10 to a needle 8, and the string brake 11 is connected to the opening operation of the valve 14.
A string threading mechanism of a binding device that is provided with a linkage mechanism C that operates in the direction of loosening.