JPS5910163B2 - Binding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a string guide plate is arranged on one side of the binding space, and a bill, a holder, etc. are arranged on the side of the guide plate opposite to the binding space to form a knot, A needle or the like is placed on the other side of the binding space, and the needle is used to supply the string across the binding space to the knot, and the stem culm of the waste straw grain culm in this binding space is The present invention relates to a tying device that detects a strand of string at a tying portion and prevents knotting defects.

Japanese Unexamined Patent Publication No. 53-122534 discloses a sensor equipped with a contactor that contacts the defective string, which is provided on the side of the string guide plate where the bill and holder are arranged, and detects unnecessary string that has been wrapped around a building due to a bundling mistake. However, this prior art has the following drawbacks.

With this detection method, the sensor contact itself installed in a narrow space may cause string accumulation.
There was a drawback that accurate detection could not be performed if the cut string was wrapped around the contact itself.

The present invention has been made with these points in mind, and aims to provide a tying device that accurately detects string accumulation without providing the contact between the guide plate and the building holder. It is something.

The binding device of the present invention separates the part of the string guide plate facing the bill and the holder from other parts, supports it so that it can protrude into the binding space, and this movable part remains constant. The feature is that a detection tool is provided to detect when the string protrudes into the binding space, so that when more than a certain amount of string accumulates on the building or holder, the moving part is pushed out into the binding space. By detecting this, it has become possible to early and reliably detect malfunctions of buildings and holders due to string accumulation.

Moreover, since the method uses the string guide plate itself to detect a string accumulation, there is nothing between the guide plate and the bill holder, and the conventional drawbacks arise from the fact that a special contactor was provided between the guide plate and the bill holder. never occurs.

Next, embodiments of the present invention will be described.

FIRST EMBODIMENT (See FIGS. 1, 2, and 3) This embodiment will be explained by taking as an example a waste straw binding device 2 attached to a threshing device 1 mounted on a combine harvester.

A string guide plate 4 is provided above the binding space 3, and a building 5, a holder 6, and a timing gear 7 for intermittently driving these are provided on the opposite side of the guide plate 4 from the binding space 3 (hereinafter referred to as the back side). It constitutes a knot 8, and on the lower side there is a twenty-one dollar 9, a police car 10, and a door that also serves as a release arm.
11 etc. are arranged to constitute the string supply section 12.

The string guide plate 4 has a movable part 14 integrally formed with a part facing the building 5 and the holder 6 and a part around the guide groove 130, and a movable part 14 at the starting end of the guide groove 13 with respect to the peripheral frame part 15 outside this part. It is configured to be pivoted so as to be movable in and out of the binding space 3 via a pivot shaft 16 provided on the back side.

The spring 17 always urges the movable portion 14 toward the retreating side, and the movable portion 14 is prevented from moving against the urging force of the spring 17 when the adjacent peripheral portions of both portions 14 and 150 become substantially flush with each other. , a stopper 18 is provided on the movable portion 14, which abuts against the back surface of the peripheral frame portion 15.

Reference numeral 19 designates a first bracket that protrudes from both opposite side edges of the movable portion 140 toward the rear side, and holds the pivot shaft 16 at the starting end side.
A bracket 20 is formed on the peripheral frame portion 15.

On the back side of the stopper 18, a normally open limit switch 22, which is a detection device of the detection device 21, is disposed oppositely. When the stopper 18 presses the limit switch 22 and causes it to protrude toward the binding space 3, the limit switch 22
It is configured to activate an alarm device (not shown) that is connected to the power supply circuit.

23. Reference numeral 24 denotes a lip for preventing the removal of waste straw from being drawn in, which is projected toward the binding space 3 at the starting end side of the guide groove 13. The starting end halves 23a and 24a are used as the peripheral frame portion 15, and the terminal end portions 23b and 24b are used as movable parts. 14, respectively.

Second Embodiment (See FIG. 4) The guide plate 4 is constructed as follows, and the rest is the same as the first embodiment.

A second bracket 20 protruding toward the back side is formed on substantially the entire periphery of the space for inserting the movable portion 14 of the peripheral frame portion 15,
In addition, a first bracket 19 is formed on substantially the entire periphery of the movable portion 14 and protrudes toward the back side, and both brackets 19, 200
The guiding action holds the movable portion 14 slidably relative to the peripheral frame portion 15 in the direction of movement into and out of the binding space 3.

Then, the stopper guide pins 26 and 26 inserted into the plurality of elongated holes 25 and 25 formed in the opposite sides of the second bracket 20 in the extending and retracting direction are inserted into the first bracket 19.
By forming the guide pin 26 into contact with the rear side end portions of the elongated holes 25, 25, both parts 14, 150
The peripheral edge is approximately flush with 5K.

Springs 17, 17 for biasing the movable portion 14 toward the retreating side are interposed between the movable portion 14 and the peripheral frame portion 15, and a normally closed limit switch 22' serving as a detection device is provided. It is provided so as to be in contact with the inner surface side of the arm 27.

Note that the following changes are possible in both of the above embodiments.

It is also easy to apply it to a stem culm binding device attached to a binder.

Note that the detection device 21 is not limited to the above-mentioned embodiment, and may be constructed by using one end of a release wire as the detection device and connecting the other end to a change operation section of a variable display device provided within the visual field of the operator. It's also good.

The display may also be based on sound, light, text, etc.

Further, the movable portion 14 may be supported directly on the body frame so as to be swingable or slidable.

[Brief explanation of the drawing]

The drawings show an embodiment of the binding device according to the present invention, FIG. 1 is a side view showing the rear part of the combine harvester of the first embodiment, and FIG. 2 is a view taken along the line n-n in FIG. 1 of the first embodiment. , FIG. 3 is a side view showing the guide plate of the first embodiment, and FIG. 4 is a cross-sectional plan view showing the second embodiment. 4...Guide plate, 5...Bill,
6...Holder, 3... ... Binding space, 1
4. River: moving parts, 15: other parts.

Claims (1)

[Claims] 1 The part 14 of the string guide plate 4 facing the building 5 and the holder 6 is separate from the other part 15 and is supported so as to be able to protrude into the binding space 3, and this movable part 14 A binding device characterized in that it is provided with a detection tool 21 for detecting that the object protrudes into the binding space 3 by a certain amount or more.