JPH0543633Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention provides a swingable building holder that slides into contact with a knot building that operates to close the knot building, and also provides a swingable building holder that closes the building holder and closes the building holder. This invention relates to a stem and culm binding device equipped with a coil spring that biases the stem and culm.

[Conventional technology]

In the above-mentioned stem culm binding device, conventionally, as shown in FIG. The coil spring 19 is fitted onto the adjustment rod 21, and the coil spring 19 is inserted through the spring receiver 23 which is slidable with respect to the urging force adjustment rod 21.
The coil spring 19 is applied to the building presser 2 by using a removable spring receiving pin 26 attached to the end of the biasing force adjustment rod 21 as a reaction force member.
0 toward the closing side, and change the mounting position of the spring receiving pin 26 by selecting a plurality of pin mounting holes 27 arranged in the axial direction of the biasing force adjustment rod 21. By doing this, the biasing force of the coil spring 19 can be adjusted.

[Problem that the invention attempts to solve]

In the conventional device, the knot building 11 and the building presser 2
The biasing force of the coil spring 19 is maintained and adjusted at a predetermined value so that the closing force of the knot building 11 is exerted as desired regardless of the wear caused by the sliding contact of the coil spring 19. When adjusting the force, use the spring receiving pin 26.
Not only does it take a lot of trouble to remove and remove the coil spring 19 from the biasing force adjustment rod 21 and to put it back on, but especially when putting back the spring receiving pin 26, the spring receiving pin 26 must be kept in an elastically deformed state while maintaining the spring receiving pin 26. It is time-consuming because it is necessary to insert the pin 26,
Work efficiency was getting worse.

An object of the present invention is to modify the device so that the biasing force can be adjusted easily.

[Means for solving problems]

A characteristic configuration of the present invention is that, in the above-mentioned stem culm binding device, the stem culm binding device is attached across the building holder and the mounting member in a slidable state with respect to at least one of the building holder and the mounting member of the building holder. The coil spring is fitted onto the biasing force adjusting rod, and a biasing force adjusting cam for adjusting the biasing force of the coil spring is rotated around an axis perpendicular to the biasing force adjusting rod at the end of the biasing force adjusting rod. The biasing force adjusting cam is attached so as to be movably operated, and is biased by the coil spring so that the distances from the axis are different, and the end of the coil spring or the mounting member is biased to adjust the mounting posture of the biasing force adjusting cam. A plurality of cam surface portions are arranged in the circumferential direction of the biasing force adjusting cam and are provided on the outer circumferential surface of the biasing force adjusting cam, and the functions and effects thereof are as follows.

[Effect]

When the cam surface that contacts the coil spring or mounting member is changed by rotating the biasing force adjusting cam to change its mounting posture, the cam surface that contacts the coil spring or mounting member is biased by the coil spring. The force adjustment cam maintains the mounting posture after the change, and the biasing force adjustment cam adjusts the deformation of the coil spring due to the difference in distance from the axis of the plurality of cam surfaces. The biasing force adjustment cam adjusts the deformation of the coil spring,
The biasing force of the coil spring becomes different from that before adjustment.

[Effect of idea]

Adjustment of the biasing force of the coil spring can be done simply by rotating the force adjustment cam, and the closing operation force of the knot building can be adjusted to a predetermined force to prevent knotting errors even if the above-mentioned parts are worn out. It is now possible to easily and quickly make adjustments to maintain the condition.

〔Example〕

As shown in FIG. 5, a pulling device 1 and a reaping device 2 act on the planted stem culm, a device 3 conveys the cut stem culm to one side of the machine body, and a device 3 acts on the stem culm from this conveying device 3. A working section equipped with a stem culm binding device 4 is provided at the front part of a wheeled traveling body equipped with an engine 5, a control handle 6, etc., thereby configuring a walking binder.

As shown in FIG. 4, the stem culm bundling device 4 is configured such that the cut stem culms from the conveying device 3 are collected by being scraped into the bundling space S by the swing packer 7, and the collected stem culms are collected at a predetermined amount. When the stem culm pressure acting on the outlet door 8 for raking the stem culm reaches the set value, the outlet door 8 is slightly displaced and the binding clutch (not shown) is engaged, and the cord is supplied. When the needle 9 operates to supply string to the string holder 10, the string holder 1
0 and the knot building 11 are operated to bind the collected stem culms, and upon completion of the binding, the discharge port door 8 is driven open and the stem culm discharge arm 12
is driven to eject the bundled stem culm from the binding space S to one side of the fuselage.

To explain the nodule in detail, the nodule building 11
As shown in FIG. 3, it consists of a building body 11a and an opening/closing pawl 11b pivotally attached to the building body 11a, and a mounting member 14 connected to a rotating shaft 13 connected to the building body 11a. It is rotatably mounted on the Then, the binding clutch is engaged and the timing gear 15 is driven to rotate, and the partial gear portion 1 provided in a part of the timing gear 15 is rotated.
5a engages with the building drive gear 16 attached to the rotating shaft 13, the rotating shaft 13 is driven and the building body 11
a and the opening/closing claw 11b are both rotated, and as shown in FIG. Open operation or
As shown in FIG. 2, a building presser 20 is pivotally attached to the support portion 14a of the mounting member 14 so as to swing around the axis _P1 , and is biased to swing toward the closing operation side by a coil spring 19. slides into contact with the roller portion 18 and closes the opening/closing claw 11b.
The knot building 11 opens and closes while rotating around the axis of the rotating shaft 13, and the collecting stem culms and the string holder 1 in the binding space S are connected to each other.
It is configured to perform a knotting operation by wrapping the string portion extending over the knot 11 around the periphery of the knot building 11 and holding it in its mouth to create a string knot.

As shown in FIG. 2, the coil spring 1
Reference numeral 9 denotes a biasing force adjusting rod 21 which is attached to the dominant end side of the building presser 20 so as to be able to slide freely through the same, and which is attached to the attachment member 14 so as to be prevented from coming out by the head 21a. The mounting member 14 is fitted on the opposite side of the bill presser 20, and the side of the coil spring 19 opposite to the bill presser side is attached to the end of the urging force adjustment rod 21. A biasing force adjusting cam 22 is attached using a pivot pin having an axis _P2 perpendicular to the rod 21.
Thus, it is configured to be received and supported by the biasing force adjustment rod 21 via a slidable spring support 23. As shown in FIG. 1, the outer peripheral surface of the urging force adjusting cam 22 has three cam surface portions 22a, 22b, 22 arranged in the circumferential direction of the cam 22.
The cam surface portions 22a, 22b, 22c are provided with different distances _{L1, L2,} or _L3 from the axis _P2 , respectively.
are pressed against the end of the coil spring 19 via the spring receiver 23 by the urging force of the coil spring 19, so that the cam surface portion 22a or 22b or 22c is pressed against the spring 19 via the spring receiver 23. The biasing force adjusting cam 22 is formed into a flat surface so as to maintain the biasing force adjusting cam 22 in the mounting position where it makes contact. That is, the coil spring 19 is configured to bias the bill presser 20 using the force adjusting cam 22 as a reaction force member. The biasing force of the coil spring 19 is adjusted by changing the mounting posture of the biasing force adjusting cam 22 by rotating it around the axis _P2 .

As shown in FIG. 4, the reaping device 2 is configured in the shape of a clipper so that a cutting blade 25 is slid back and forth against a receiving blade 24 fixed to the machine body. Then, the receiving blade pieces 24a and 2 constituting the receiving blade 24 are
The number of cutting blade pieces 25a constituting the cutting blade 25 and the receiving blade 24 are adjusted so that even if soil or straw debris adheres to the lateralmost piece 24b of the cutting blades 24b, the cutting blade 25 pushes out and discharges it. The number of blade pieces 24a and 24b is the same.

[Another example]

FIGS. 6 and 7 show another embodiment of the biasing force adjustment structure, and in the structure shown in FIG. A coil spring 19 is attached to a portion of the biasing force adjusting rod 21 located on the opposite side of the mounting member 14 with respect to the bill presser 20, and the biasing force adjusting cam 22 is configured to be in contact with the mounting member 14. It is attached to the urging force adjustment rod 21. In the case shown in FIG. 6, the urging force adjustment rod 21 is attached to the mounting member 1.
4, and a coil spring 19 is located at a location opposite to the bill presser 20 with respect to the mounting member 14 of the biasing force adjustment rod 21.
and a biasing force adjustment cam 22 are attached.

In addition to binding devices for binders, the present invention can also be applied to various stem and culm binding devices, such as those installed in combine harvesters for binding threshed straw.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of drawings]

The drawings show an embodiment of the stem culm binding device according to the present invention, in which Fig. 1 is a front view of the urging force adjustment cam, Fig. 2 is a side view of the nodule building arrangement part, and Fig. 3 is a nodule building arrangement part. Fig. 4 is a plan view of the stem culm binding device, Fig. 5 is a side view of the entire binder, Figs. 6 and 7.
The figure is a side view of another embodiment of the biasing force adjustment structure. 8th
The figure is a side view of a conventional urging force adjustment structure. 11... Nodule building, 14... Mounting member, 19...
...Coil spring, 20...Bill presser, 21...
...Biasing force adjustment rod, 22...Biasing force adjustment cam,
22a, 22b, 22c...cam surface part, _P2 ...
Axis center, L ₁ , L ₂ , L ₃ ... distance.

Claims (1)

[Scope of utility model registration request] A stem culm bundling that is swingably provided with a building presser 20 that slides in sliding contact with the knot building 11 that operates to close the knot building 11, and is provided with a coil spring 19 that biases the building press 20 toward the closing operation side. In the device, a biasing force adjustment rod 2 is attached across the building presser 20 and the mounting member 14 in a slidable manner with respect to at least one of the building presser 20 and the mounting member 14 of the building presser 20.
1, and a biasing force adjustment cam 22 for adjusting the biasing force of the coil spring 19 is attached to the end of the biasing force adjusting rod 21 with an axis P2 perpendicular to the biasing force adjusting rod ₂₁ . It is attached so that it can be rotated freely around the
The biasing force is adjusted so that the distances (L ₁ or L ₂ or L ₃ ) from P ₂ are different, and the end of the coil spring 19 or the mounting member 14 is biased by the coil spring 19. A stem culm binding device in which a plurality of cam surface portions 22a, 22b, 22c formed so as to maintain the mounting posture of the cam 22 are arranged in the circumferential direction of the urging force adjusting cam 22 and provided on the outer peripheral surface thereof.