JPH0112584Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a grain culm discharge assisting device for facilitating the discharge of bound grain culms in a reaping and binding machine.

This type of grain culm release assisting device was developed in 1987.
The reaping and bundling collecting machine of No. 18319 is known, but in this known technology, a forced release mechanism is provided on the release side of the bundling pocket and is driven in conjunction with the door clutch, so that the grain culms being tied at the bundling part are This had the disadvantage that it did not work effectively and resulted in delayed harvesting.

In view of the above-mentioned shortcomings of the conventional device, the present invention aims to effectively convey the grain tip of the grain culm in the bundling part to prevent the leading or delayed earing of the grain culm tip that is released. It is something.

The present invention provides an auxiliary star wheel that acts on the tip of the grain culm in the tying section, and transmits the auxiliary star foil to the reaping drive shaft via a clutch that is in a transmission state when the tying needle is activated, thereby timing the tying operation. In accordance with this, the auxiliary star foil is conveyed to the tip of the grain culm in the bundling section.

The following will explain the embodiments shown in the drawings.

In FIG. 1, 1 is a binding device, 2 is a cutting blade device, 3 is a horizontal conveyance chain, 4a and 4b are star foils, and 5 is a conveyance plate.

The binding pocket P of the binding device 1 is formed in front of the door 11 between the knot cover 6 of the knot portion of the binding device 1 and the binding cover 7 below the conveyance plate 5.
8 is a discharge arm, S _A and S _A ' are movement loci of the discharge arm 8, 9 is a packer, S _B is a movement locus of the packer 9, and 10 is a needle.

The present invention is to provide an auxiliary star foil 12 that acts on the tip of the grain culm in the binding section in the known reaping and tying machine having the above-mentioned configuration. In order to act on the tips of grain culms during binding, an auxiliary star foil 12 is provided so that the motion locus S _C of its tips projects beyond the upper part 5a of the conveyor plate.

Referring to FIG. 2, a support shaft 14 is mounted on a support plate 13 fixed at a proper position on the machine body, and an auxiliary star wheel 12 is fixed to the upper end of the support shaft 14. A pulley 15 loosely engaged with the support shaft 14 is transmitted to a reaping drive shaft (not shown) via an appropriate transmission means 16. Transmission is enabled between the pulley 15 and the support shaft 14 via a clutch device 17. In addition, the spindle 1 is connected via the clutch device 17 to a rotating shaft that is constantly transmitting power to the reaping drive shaft, such as the drive shaft 19 of the drive sprocket 18 of the horizontal conveyance chain 3 and the constantly rotating shaft of the bundling device 1 (not shown).
Of course, 4 may be transmitted. Drive shaft 1
If the support shaft is located above 9, the drive shaft 1
It is also possible to equip the upper end of the upper extension shaft 9 with a clutch device to transmit power to the support shaft 14 connected above the upper extension shaft, thereby omitting the pulley 15 and other transmission means (see the second embodiment in FIG. 3). (see example).

Clutch wire 20 of the clutch device 17
One end of the clutch is connected to a sensing piece 21 which is driven by contacting the proximal end of the needle 10, and is configured to be "clutched" in synchronization with the operating timing of the needle 10.

Various known mechanisms can be applied to the clutch device 17, and one example will be described with reference to FIG. By moving the clutch pawl 23 that engages and disengages the clutch body 2 and the clutch wire 20 in the direction of arrow B as the needle 10 rotates in the direction of arrow A,
2 to the pulley 15 side to bring the clutch into the engaged state.

In the embodiment shown in FIG. 3, the support shaft 14 is constantly rotated as a driving sprocket shaft or a driven sprocket shaft for the horizontal conveyance chain 3, the auxiliary star wheel 12 is loosely fitted, the clutch body 22 is spline engaged, and the hawk Clutch body 22 with 24 operations
Transmission is transmitted between the support shaft (drive sprocket shaft) 14 and the auxiliary star wheel 12 via.

In the reaping and tying machine implementing the present invention, a needle 10 rotating in the _A direction and a knot part are connected to the stock base of the harvested grain culm fed into the tying pocket P by the packer 9 rotating on a motion trajectory S B. After performing a binding action between the needles 10 and 10, it is released to the side of the fuselage by the release arm 8 rotating on the movement trajectory S _A. During the above binding action, as the needle 10 rotates, the clutch device 17 operates to drive the auxiliary star wheel 12, so that the auxiliary star foil 12 acts and conveys the tip of the reaped grain culm during the bundling operation, thereby assisting the discharge action of the discharge arm 8. The clutch device 17 is "off" when the ejection arm 8 and needle 10 have finished operating.
Then, the rotation of the auxiliary star wheel 12 stops.

As mentioned above, the auxiliary star wheel 12 rotates intermittently from the start of movement of the needle 10 (i.e., the start of binding) until the end of the operation of the discharge arm 8, and is stopped especially when the pack car 9 is in operation. Therefore, even if the auxiliary star foil 12 is provided, there will be less culm entrainment and grain shedding, and there will be no problem in implementing the present invention.

Further, as shown in FIGS. 4 and 5, the position where the action piece 12a protrudes is located at the auxiliary star wheel 12.
If you set it so that it is the stopping position, the police car 9
This is advantageous because it functions as a tip holder for the tip of the grain culm that is raked in.

As described above, the present invention is provided with an auxiliary star foil that acts on the tip of the harvested grain culm in the binding section, and the auxiliary star foil is made to act in synchronization with the operating timing of the needles, so that only when the tying is activated. The operation of the auxiliary star foil (from immediately after the start of the needle operation until just before the end of the discharge operation) prevents delayed and advanced ear pulling of the bundled grain culm during discharge, resulting in stable discharge performance. be.

[Brief explanation of the drawing]

FIG. 1 is a partial plan view showing the outline of a binding device and a harvested grain culm conveying mechanism in a harvesting and binding machine.
FIG. 2 is a partial side view schematically showing the first embodiment of the grain culm discharge assisting device of the present invention.
FIG. 3 is a schematic diagram of a grain culm discharge assisting device according to a second embodiment of the present invention. 4 and 5 are schematic diagrams illustrating a receiving mechanism for the grain tip at the stop position of the auxiliary star wheel, with FIG. 4 being a side view and FIG. 5 being a plan view. 1... Binding device, 10... Needle, 12...
Auxiliary star foil, 17...clutch device.

Claims (1)

[Scope of utility model registration request] An auxiliary star wheel is provided that acts on the tip of the grain culm in the tying section, and the auxiliary star foil is transmitted to the reaping drive shaft via a clutch device that is engaged in synchronization with the actuation timing of the tying needle.
A grain culm release auxiliary device for a reaping and tying machine, characterized in that an auxiliary star wheel is rotated only during tying operation.