JP2564972Y2 - Double-release harvesting and binding machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement for restricting accidental movement of a discharge arm in a non-operation state in a double discharge type cutting and binding machine.

[0002]

2. Description of the Related Art Conventionally, a double-discharge type cutting and binding machine is known. For example, this is a technique disclosed in Japanese Patent Application Laid-Open No. 4-141020. The discharge mechanism in these conventional binding machines is provided with a pair of ejection arms in order to eject the ejection direction of the binding machine to a desired left or right, and a drive clutch unit provided on each ejection arm drive shaft. Switch to
One of the discharge arms is kept activated. Then, the grain stalks scraped by the packer are received and pressed by the door, and when a certain pressing force is applied to the door, one discharge arm starts rotating together with the needle, the needle is bound and reciprocated, The release arm makes one rotation in a half-moon shape to release the bundle, returns to a predetermined standby position, and stops.

[0003]

In the prior art described above, the release arm when not in operation is simply in a state in which the clutch is disengaged, so that during a mowing operation, the release arm may move unexpectedly due to vibration or the like. In such a case, the transfer could not be performed well, resulting in a discharge error, which sometimes caused clogging. In order to avoid this, it is conceivable that the spring is urged to stay at a predetermined position, but it is necessary to increase the rotating power of the discharge arm at the time of operation. It cannot be used. The present invention solves the above-mentioned disadvantages of the prior art.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. Left release arm 2 and right on both left and right sides of the binding device
A discharge arm 3 is provided, and the pair of discharge arms are selectively driven.
Left release in a double release type mowing tying machine configured to be movable
The drive clutch portion of the arm 2 is covered with the left release drive case 8b.
The drive clutch of the right release arm 3
8a and the inner surfaces of the left and right discharge drive cases 8a and 8b.
Locking protrusions 13 formed in the
A latch claw 14b formed on the latch hardware 14 is provided,
The locking projection 13 and the locking claw portion 14b are locked when the switch is cut off.
To lock the inactive release arm in the predetermined standby position.
It is a thing.

[0005]

With this configuration, when the switching shifter is rotated to slide the clutch hardware to cut the drive clutch portion, the engagement claw portion of the clutch hardware and the engagement claw portion of the release arm drive shaft are disengaged. Is disengaged and the drive is released, and at the same time, the locking claw with the locking claw is locked so that it cannot rotate freely, and the inactive release arm is fixed at the predetermined standby position. Because

[0006]

Next, an embodiment will be described. 1 is a plan view of the binding device, FIG. 2 is a rear sectional view of the binding device, FIG. 3 is an enlarged sectional view of the discharge arm driving unit, and FIG. 4 is a perspective view of the driving clutch unit of the present invention.

Referring to FIGS. 1 and 2, the construction of the cutting and binding apparatus will be described. Two sets of discharge arms 2 and 3 are provided in the left-right direction of the fuselage. By selectively operating the switching shifters 26 and 27, the discharge direction such as right discharge and left discharge can be selected. The tip of the packer 1 is always rotated in an elliptical orbit by the packer shaft 17, and the grain is scraped into a position in front of the one-turn door 5 which is a binding space. When a certain load is applied to the one-turn door 5, the binding release operation shaft 18, the needle shaft 19, and the release arm drive shaft (knot shaft) 2
One rotation starts. Then, the needle 6 enters the inside of the knot portion cover 4, and causes the knotter building 7 and the holder of the tying portion B to hold the other end of the tying cord, thereby performing the knotting action. 8a is a right emission drive case, 8b is a left emission drive case, and 9 is a binding mission case.

Next, referring to FIG. 2, a binding transmission case 9, a right discharge drive case 8a, a left discharge drive case 8b,
Other arrangements of each axis will be described. Power from the engine is transmitted to an input shaft 20 that is supported by the binding transmission case 9 as a bearing. A sprocket is provided at a portion where the input shaft 20 protrudes into the binding transmission case 9, and drives a loose fitting sprocket 28 which is loosely fitted around the binding release operating shaft 18 via a chain. The loose fitting gear 31 integrated with the loose fitting sprocket 28 meshes with the driving gear 30 of the packer shaft 17, and the packer shaft 17 is constantly rotating. A single-rotation clutch C for transmitting the rotation of the loose fitting gear 31 as the rotation of the binding release operation shaft 18 is provided;
The one-turn clutch C is configured to start operating by a load pressing the one-turn door 5 fixed to the needle shaft 19. One rotation by the one-rotation clutch C is transmitted to the binding release operation shaft 18 and the release arm drive shaft 21.

The rotation of the binding release operation shaft 18 drives the release arm 2 via the drive clutch unit and the arm 22 in the left release drive case 8b.
The rotation of 1 drives the discharge arm 3 via the drive clutch unit and the arm 23 in the right discharge drive case 8a. The release arms 2 and 3 are selectively drivable, and are provided with switching shifters 26.
27 are provided. Then, the discharge arm drive shaft 21
Rotates the bevel gear 32, rotates the speed-up bevel gear 25 meshed with the bevel gear 32, and speed-up rotates the knotter building 7 and the holder at the binding portion B.

In the above construction, the present invention prevents one of the drive clutch portions from being disconnected by the switching shifter 26 or 27 so that the release arm 2 or 3 is not rotated by vibration or the like even when it is in an inactive state. It is to be. This configuration will be described with reference to FIGS. 3 and 4 with respect to the drive unit of the discharge arm 3 on the right side. An engaging claw portion 32a is fixedly provided on the back surface of the bevel gear 32 at the distal end of the discharge arm drive shaft 21.
The discharge arm shaft 12a is supported by the right discharge drive case 8a, facing the tip of the discharge arm drive shaft 21, and the clutch hardware 14 is spline-fitted on the discharge arm shaft 12a inside the right discharge drive case 8a, The arm 23 is fixed outside. The drive clutch is formed such that the engagement claw 32a can be engaged with the engagement claw 14a formed on the lower surface of the clutch hardware 14. A locking claw portion 14b is formed on the upper surface of the clutch hardware 14 so as to be able to engage with the locking projection 13 formed on the inner surface of the right discharge drive case 8a. The clutch hardware 14 slides by the rotation of the switching shifter 27. It is done. Reference numeral 11 denotes a seal member.

In such a configuration, when the switching shifter 27 is rotated and the clutch hardware 14 is slid downward so as to drive the discharge arm 3 on the right side, the engagement claw 14a is formed.
And the engaging claw portion 32a is engaged, so that power can be transmitted from the discharge arm drive shaft 21 to the discharge arm shaft 12a, and the discharge arm 3 can be driven via the arm 23. When the switching shifter 27 is rotated in the reverse direction and the clutch hardware 14 is slid upward, the engagement claw portion 14a
The engagement claw 11a is disengaged from the engagement arm 11a and is not driven. Further, the engagement claw 14b on the upper surface of the clutch hardware 14 is engaged with the engagement protrusion 13 and cannot rotate freely. Is fixed. Note that a similar drive clutch unit is also configured in the discharge drive case 8b on the discharge arm 2 side.

[0012]

[Effects of the Invention] The present invention is constructed as described above, and has the following effects. First, since the drive clutch portion of the discharge arm is covered by the discharge drive case, there is no need to worry about the bite of dust, and the on / off operation of the clutch is improved. Second, by using this discharge drive case,
A stop projection 13 is provided, and a locking claw portion 14b of the clutch hardware 14 is provided.
By engaging with the release arm, the discharge arm at the time of non-operation is fixed at a predetermined standby position, so that the discharge arm protrudes into the discharge space by unexpected rotation due to vibration or the like, thereby obstructing the conveyance or clogging. The mowing transport has been performed well without causing any problems. Third, the emission drive cable
The locking projection 13 protruded from the inner surface using
Therefore, it is necessary to separately provide a member for supporting the locking projection 13.
There was no cost, and the rise in costs could be suppressed.
Fourth, since no spring is used to fix the discharge arm, it is not necessary to increase the rotational power of the discharge arm, it is only necessary to process the drive clutch part, and it is necessary to make the drive tilt of the discharge arm sturdy. The cost was reduced to a minimum.

[Brief description of the drawings]

FIG. 1 is a plan view of a binding device.

FIG. 2 is a rear cross-sectional view of the binding device.

FIG. 3 is an enlarged sectional view of a discharge arm driving unit.

FIG. 4 is a perspective view of the driving clutch unit of the present invention.

[Explanation of symbols]

 2.3 Release arm 11 Bevel cam 11a Engagement claw 12a / 12b Release arm shaft 13 Locking projection 14 Clutch hardware 14a Engagement claw 14b Locking claw 21 Release arm drive shaft 26/27 Switching shifter

Claims (1)

(57) [Scope of request for utility model registration] 1. A left discharging arm 2 is provided on both left and right sides of a binding device.
A right discharge arm 3 is provided, and the pair of discharge arms are selectively provided.
In a double release type mowing tying machine that can be driven,
The drive clutch portion of the output arm 2 is connected to the left release drive case 8b.
Cover the drive clutch of the right release arm 3 with the right release drive cable.
Of the left and right discharge drive cases 8a and 8b.
Locking projections 13 formed on the surface,
An engaging claw portion 14b formed on the clutch hardware 14 is provided,
When the latch is released, the locking projection 13 and the locking claw portion 14b are engaged.
Stops and locks the inactive release arm in the predetermined standby position
Both release reaper binding machine, characterized in that the.