JPH059045B2 - - Google Patents

Description

[Detailed Description of the Invention] Generally, a binding machine for binding grain culms operates a one-turn clutch according to the set pressure of a constant pressure spring, and after the clutch is engaged, the door is reset by the elastic force of the constant pressure spring. When the door returns, if the grain culm is caught between the door and a member supporting the grain culm, such as a guide plate, the door will be in an incomplete return position, reproducing the condition where it is subjected to a predetermined culm pressure. As a result, the one-turn clutch does not cut when it makes one revolution (the stopper claw does not engage with the receiving surface of the cam plate of the one-turn clutch), and the knot and needle operate continuously, causing the culm that the culm has been scraped one revolution. We perform the so-called grandson bond to unite the children. Even if the release arm does not release this, the amount of culm is small and sufficient rigidity cannot be obtained, so the release arm only pushes and bends the culm and does not remove the knots, leaving the binding cord wrapped around the building. Next, even if the needle enters to tie the knot, the bill is not open, so the knot cannot be tied, resulting in a bundling error and damage to the bill and the needle.

The purpose of the present invention is to improve the above-mentioned drawbacks, and when the grain culm shoved by the packer is received by the door, and the pressure exceeds the door pressure set by the constant pressure spring, the one-turn clutch is released. In this tying device, the needle and the knotting section operate to release the bundle after knotting. When the grain culm is pulled in and compressed, the door is forcibly held in a closed state by means of pressing in conjunction with the packer shaft.

The embodiment shown in the drawings will be explained below.1
This is a threshing device mounted on the base of a combine harvester, and a straw conveying chain 2 is stretched above the dust sorting chamber behind the culm discharge port.

Reference numeral 3 denotes a desk-shaped cutter having a switching plate 4 on its upper surface, which is attached to the rear of the threshing device 1.

Reference numeral 5 denotes a binding case of a binding machine installed on a culm passage 6 extending rearward from above the cutter 3, and its front part is supported by support rods 8 on support frames 7, 7 erected on both sides of the cutter 3. It is supported via an arm 9, and the rear part is supported by brackets 10, 10 on both sides of the rear part of the cutter 3.
An arm 12 and a pipe 12a are attached to a support shaft 11 installed in
A first packer shaft 13 which also serves as an input shaft is attached to the binding case 5 in order from the front.
The door shaft 14 and the second puller shaft 15 are supported by a knot shaft 16 and a needle shaft 17 on the same axis.
4. The second packer shaft 15 protrudes from both sides of the binding case 5, and is connected to the left and right pairs of packers 18, 18, doors 19, 19, and second packer 2, respectively.
0,20 are attached, and the above-mentioned police car 18,1
The installation width J of 8 is larger than the installation width H of the doors 19, 19, and the roll 18 in the middle part of the police car 18 is
a slides on the cam 18b and rotates as shown.

Reference numeral 21 denotes a chain driven by a sprocket 22 fixed to the first packer shaft 13, and is wound around sprockets 24, 25, 26 loosely fitted to the second packer shaft 15, intermediate shaft 23, and knot shaft 16. be.

The one-turn clutch of the second sprocket shaft 15 has a tapered pawl 24a provided on the side surface of the sprocket 24, a clutch plate 27 into which a taper pin 27c is fitted and has a protrusion 27a and a pin 27b, a tapered hole 28a, and a clutch plate 27 having a projection 27a and a pin 27b. It consists of a cam plate 28 having a notch 28b and a receiving surface 28c with which the pin 27b engages, and the discontinuing part of this one-turn clutch is formed by a disc cam 3 which has a recess 30a at the clutch disengagement position and integrally connects a sprocket 30b.
0 and a plate cam 29 having an arcuate bearing surface 29a at the clutch disengagement position, the plate cam 29 is fixed to the second packer shaft 15, the disk cam 30 is loosely fitted, and the sprocket 30b is connected to the nodal shaft 16. The arms 31, 31 of the door shaft 14 are linked to the sprocket 20a fixed to the door via the chain 20b.
The shaft 35 has a claw 36 that engages with the receiving surface 28c of the cam plate 28. and a roll 37a in the middle part, respectively.
Swinging arms 38a and 38b which are pivotally supported are provided protrudingly, and the tip of one swinging arm 38b is rotatably connected to the other end of the connecting rod 32 with a pin, and the roll 37b is connected to the disc cam 30. The tip of the other swinging arm 38a is connected to the rod 34, and the roll 37a attached thereto is opposed to the plate cam 29.

Further, a one-turn clutch identical to the one described above (however, without the protrusion 27a) is attached to the articulation shaft 16, and a cam plate 28 of this one-turn clutch is attached.
The pawl 36 engaged with the intermediate shaft 23 is connected by a link to a swinging arm 40 that is pivotally supported on the intermediate shaft 23.
The swing arm 40 is activated when the protrusion 27a of the clutch plate 27 of the one-turn clutch rotates approximately 300 degrees and comes into contact with it, and the link 40a is activated accordingly.
, the pawl 36' is disengaged from the cam plate 28', and the one-turn clutch of the articulating shaft 16 is activated with a corresponding delay.

The nodal part consists of a building 41 and a holder 42,
The sweeper 44 is driven by the Geneva gear 43 fixed to the node shaft 16, and the sweeper 44 is driven by the pin 4 of the Geneva gear 43.
3a rotates through the fan-shaped cam 45, boss 45a and ground 45b, and releases the bundled straw bundles while cutting them, and the rear door 46 is rotated by the rear door shaft 46a.
It is opened and closed by a fan-shaped cam 45.

47 is a nodule guide, and the second packer 2
The bases of 0 and 20 are connected in a U-shape, and their operation is regulated by one link 48 on one side.

Reference numeral 49 denotes a needle whose base portion is attached to a rotating shaft 50, and the rotating shaft 50 is operatively connected to the needle shaft 17 which rotates integrally with the knot shaft 16 via a disassembly connecting rod 51 and crank arms 52, 52. has been done.

Reference numeral 53 denotes a guide plate that projects rearward from the rear end of the upper surface of the cutter 3 via the upper surface of the rotating shaft 50.

In the above-mentioned device, the waste straw conveyed by the waste straw conveyance chain 2 is constantly raked in and collected by the left and right packers 18, 18 on both sides of the bundling case 5 while separating the stock base and tip from the following straw. When the amount of culms reaches a predetermined amount, the one-turn clutch engages, but when the packers 18, 18 are not compressed, the plate cam 29 moves as shown in Fig. 5a.
As shown in FIG.
b, so when the packers 18, 18 compress the focusing culm, the constant pressure spring 33 is compressed because the roll 37a is supported by the arcuate receiving surface 29a of the plate cam 29, and the swing arm 38b is Forced to rotate by the rod 32, the roll 37b enters the recess 30a of the disc cam 30 as shown in FIG. The cam plate 28 rotates slightly to insert the taper pin 27c into the taper hole 28.
Since the taper claw 24a, which is constantly rotating, engages with the other end of the taper pin 27c, the one-turn clutch engages, and the second packer shaft 15 begins to rotate, and the second packer shaft 15 starts to rotate. Focusing chamber 5
The waste straw collected in 5 is scooped into the bundling chamber 54 all at once.

During this time, the plate cam 29 rotates together with the second packer shaft 15, but first rotates as shown in c and d of the same figure, and the roll 37a contacts the lower part of the plate cam 29, and the constant pressure spring 33 loosens, causing the roll 37a to rotate in a circular motion. The plate cam 30 is loosely fitted to the second packer shaft 15, so it does not rotate, but the second
The clutch shaft 15 rotates approximately 300 degrees and the clutch plate 27
When the protrusion 27a pushes the swinging arm 40, the tuberosity shaft 1
The one-turn clutch of 6 engages, and the sprocket 20a
rotates the sprocket 30b, so the disk cam 30 starts in the state shown in the figure e, and thereafter pushes out the roll 37b while rotating 60 degrees and closes the doors 19, 19.
is forcibly closed, the cam plate 29 rotates to the position shown in figures a and f, and the pawl 36 touches the receiving surface 28c of the cam plate 28.
As the second packer shaft 15 is engaged, the one-turn clutch of the second packer shaft 15 is broken and the roll 37a is pushed out and the door 1
9 and 19 are held.

At this time, the knot shaft 16 and its one-turn clutch are
The door 19 rotates 60 degrees, and then rotates 300 degrees.
19 is forcibly closed, the needle is hooked, the building 41 and the holder 42 are activated, the rear door 46 is opened, the sweeper 44 releases the straw bundle, and when it completes one revolution, it assumes the position shown in figure a. Return.

During that time, the packers 18, 18 operated twice, and even though straw was caught between the doors 19, 19 and the guide plate 53, the one-turn clutch of the second packer shaft 15 was completely disengaged. Since this state is maintained, the one-turn clutch does not engage before the bundle discharge is finished and the waste straw picked up by the packers 18, 18 at one time is not tied together.

In addition, the first packer shaft 13 and the second packer shaft 1
5 and the nodule shaft 16 (needle shaft 17) are approximately 1:1:1.

In addition, when the amount of culm inserted between the doors 19, 19 and the guide plate 53 is small, the door 19,
19 is crushed when it is forcibly closed, and its restoring force is small, so the one-turn clutch will not engage, but if there are relatively many doors 19, 19 will be sensed and activated, and the one-turn clutch will engage. However, since the packers 18 and 18 are raking at least twice at that time, the bundle is small but large enough to be knotted, so there is no chance of bundling errors.

As described above, in the present invention, when the grain culm shoved by the packer is received by the door and the pressure exceeds the door pressure set by the constant pressure spring, the one-turn clutch is actuated, which causes the needle and the knot part to actuate. In a bundling device that releases the bundle after knotting, when the door returns to the culm-receiving position after the closing operation of the one-turn clutch is completed, when the packer next rakes in and compresses the grain culm, the bundler The door is forcibly held in a closed state by means of pressing in conjunction with the shaft, so the door senses the set pressure of the constant pressure spring, engages the clutch once, and after the knot operates, the bundle is closed. When the culm is released and the culm is then raked in and compressed, the door is forcibly held in the closed return position by a means that interlocks with the culm, and the door and guide plate guide the culm. Even if the door is pressed through the grain culm that has been scraped by the packer with the culm sandwiched between the grain culm and the other member, the one-turn clutch will not engage and operate, thereby tying extremely small bundles. Therefore, it is possible to always perform reliable bundling while preventing damage to the needle or bill due to bundling mistakes.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention,
Figure 1 is a side view of the binding machine attached to the rear of the combine, Figure 2 is an exploded view of the transmission mechanism, Figure 3 is an exploded perspective view of the main parts, Figure 4 is a side view of the one-turn clutch, Figure 5 Figures a, b, c, d, e and f are operational diagrams of the door control section. 13...first car shaft, 14...door axis, 15...
Second packer shaft, 16... Node shaft, 18... Packer, 19... Door, 20... Transfer packer, 29... Plate cam, 30... Disc cam, 33... Constant pressure spring, 32...
Continuation.

Claims (1)

[Claims] 1 The door receives the grain culm shoved by the packer, and when the pressure exceeds the door pressure set by the constant pressure spring, the one-turn clutch is activated, which activates the needle and knotting section to release the knotted bundle. In such a binding device, when the closing operation of the one-turn clutch is completed and the door returns to the culm receiving position,
This binding device is characterized in that the door is forcibly held in a closed state by means of pressing in conjunction with the packer shaft when the packer next rakes in and compresses the grain culm.