JPH0117642B2 - - Google Patents

Description

[Detailed Description of the Invention] A conventional tying machine has a timing shaft equipped with a one-turn clutch on one side of the culm passage, and a knotting shaft that rotates intermittently in conjunction with the output part of the one-turn clutch on the other side. Therefore, there is no option but to use the timing axis as an input axis, and there are also drawbacks such as the inability to drive grain culm guiding devices such as the raking star wheel and combing guiding device on the nodule shaft side. It was hot.

The purpose of the present invention is to improve the above-mentioned drawbacks, and the present invention is to provide constantly rotating transmission shafts on both sides of the culm passage.
It is characterized in that it is equipped with a one-turn clutch that drives the holder and the needle, and a culm feeder is interlocked and connected to the other transmission shaft.

The embodiments shown in the drawings will be explained below. This binding device can be applied to binder or combine waste straw binding, and FIGS. A cutting blade is provided at the rear of the grain culm pulling body 2, a guide plate 3 guides the reaped grain culm laterally, 4 and 5 are guide rods, and a binding device is provided on their sides.

The above-mentioned binding device has a transmission case 11 which houses an input shaft 7, a bill 8, a holder 9, and a one-rotation drive mechanism for a needle 10 at the rear of a culm passage 6 that communicates and opens outward from the side end of the cutting blade 1. The transmission case 11 holds a sweeper 12, the front part of the culm passage 6 is provided with a puller 13, the puller shaft 14 is driven by the input shaft 7 through a chain 15a in a chain case 15, A binding chamber 16 extending rearward from the culm passage 6 is provided on the side of the holder 9.

Γ-rotation drive device and its output part The input shaft 7 is rotatably supported by a transmission case 11, and has sprockets 17a, 17 at both upper and lower ends.
A boss 19 having two tapered pawls 18a and 18b on its upper surface is spline-fitted to the upper part of the lower sprocket 17b, and a clutch plate 20, a cam 21, and a bevel gear 22 are loosely attached to the upper part of the boss 19. It's fitted.

The clutch plate 20 has a pin 20a, a hole 20b, and a protrusion 20c.
fits into the notch 22a of the bevel gear 22, and the hole 20b
has tapered surfaces at the top and bottom, and a taper pin 23 with a brake ring 23a attached is inserted into the intermediate circumferential groove, and the tip of a reversal prevention pawl 24 is in contact with the protrusion 20c.

The cam plate 21 has a downwardly tapered hole 21a into which the upper end of the taper pin 23 fits, a receiving surface 21b, a recess 21c through which the pin 20a passes, and a small hole 21.
d, both ends of a torsion spring 25 are engaged with the small hole 21d and a small hole 22b provided on the lower surface of the bevel gear 22, and the stopper 24 is loosely fitted to support the transmission case. A shaft 26 is rotatably supported by
The cam stopper 27 and the starting arm 28 that come into contact with the
The reverse prevention pawl 24 and the cam stopper 27 are pulled together by a tension spring 29, and a stopper rod 29a protruding from the transmission case 11 is exposed between them. is a sensing rod 30 facing the rear of the binding chamber 16;
is fixed with bolts 31.

Furthermore, the number of bevel gears 32 meshing with the bevel gear 22 is 24.
A needle with a Geneva gear 33 with 14 teeth cut out and 10 remaining, a plate-shaped cam 33a provided along the side of the part where the teeth are cut out, and a crank pin 34a. It is spline fitted to the drive shaft 34.

Reference numeral 35 is a binding gear in which 1/2 of the width of one tooth is cut out, and the front and rear teeth are in sliding contact with the circumferential surface of the cam 33a, and is pivotally supported by a pin 35a. The gear 35b and the gear 35c of the holder 9 mesh with each other, and the gears 35, 35b, 35c
The number of teeth is the same.

Now that the focusing amount has reached the predetermined amount, the sweeper 12
When the user pushes the sensing rod 30, the cam stopper 27 comes off from the receiving surface 21b of the cam plate 21. At that time, the taper pin 23 was fitted into the taper hole 21a of the cam plate 21 as shown in FIG. Claw boss 19
The taper pawl 18a or 18b engages, and the one-turn clutch is engaged.

As a result, the clutch plate 20, cam plate 21, bevel gears 22, 32, Geneva gear 33, and needle drive shaft 34 rotate once. At that time, the binding gear 35
does not rotate in the state shown in FIG. 6, but when the teeth of the Geneva gear 33 mesh with the bundling gear 35 at the end of the cam 33a, the bundling gear 35 rotates once, and when the rotation is completed, it is locked by the cam 33a.

When tied in this way and released by the sweeper 12 as described later, the sensing rod 30 becomes free, and the tension spring 29 pulls the sensing rod 30 and the cam stopper 27 back to their original positions, so the cam stopper 27 The cam plate 21 is received at a predetermined position, and when the taper pin 23 rotates together with the clutch plate 20 and faces the taper hole 21a, the taper pawl 18a is pushed upward and fitted into the taper hole 21a. A one-turn clutch is disconnected.

Further, the clamping pressure of the holder 9 is adjusted by a bolt 9b that receives a spring 9a, and the bolt 9b is covered by a detachable cap 9c.

Γ Needle The base of the needle 10 is rotatably supported by a pipe 36 that is fixed to the lower part of the transmission case 11 and is parallel to the culm passage 6.
0a, and the pressing part 10b facing the upper side of the culm passage 6
The base, the arm 10a, and the pressing part 10b form a U-shape, and are located above the outside of the rotating part of the packer 13 to safely guard the rotating part and prevent wrapping. The tip part is formed in a concave part 10e just near the base of the string hole 10d.

In addition, an arm 3 protruding from the base of the needle 10
7 is connected to the crank pin 3 via the rod 37a.
4a, so when the clutch is engaged once, the needle 10 engages the string and slides.

The sprocket 14a fixed to the lower end of the Γ sprocket shaft 14 has 15 teeth, while the sprocket 17 of the input shaft 7 has 10 teeth, so the rotation ratio between the two is 2:3. A fulcrum pin 40 is fixed to the end of a stay 39 protruding from a cylindrical bracket 38 erected on the upper surface of the chain case 15, and a swing arm 4 pivoted to the fulcrum pin 40
1, the middle part of the packer 13 is rotatably supported by a pin 42, and the base of the packer 13 is connected via a bearing to a crank pin 43a protruding from the crank arm 43 of the packer shaft 14. .

Γ Sweeper The outer side of the sweeper 12 is pivotally supported by a pin 44a standing upright at one end of a connecting rod 44, and the outer end pin 12a is connected to the transmission case 11 via a link 45.
It is connected to a pin 11a supported on the side surface.

Further, the other end of the connecting rod 44 has a hook 4 at the tip.
6a is pivotally attached to the operating arm 46 by a pin 44b, and its base is urged by a spring 47 so as to rotate in the direction in which the hook 46a protrudes.
The hook 46a is connected to the swing arm 4 above the hook 46a.
It faces a pin 41a protruding from the lower surface of 1,
Stopper 48 erected on the upper surface of the operating arm 46
is brought into contact with the back surface of the pressing part 10b of the needle 10, and the other end of the connecting rod 44 is brought into contact with the cylindrical bracket 38.
A pin 50 is inserted between the flange 38a and the receiver 38b.
It is welded to a cylinder 50 which is rotatably supported by a.

Furthermore, since the intermediate portion of the link 45 is tensioned by a tension spring 49 whose one end is fixed to the machine frame, the pins 12a, 44a, and 50a are as shown by reference numerals 12a', 44a', and 50a in FIG. The tip of the sweeper 12 faces the front of the sensing rod 30 of the one-turn clutch, and the sweeper 12', which was in the position shown by the chain line in FIG. 3, is moved to the position shown by the solid line due to the focused culm pressure. After moving backward and pushing the sensing rod 30, the one-turn clutch engages, and when the needle 10 is engaged, the stopper 48 becomes free and the operating arm 46 is rotated counterclockwise by the spring 47, so that the hook 46a is constantly operated. The actuating arm 46 engages with the pin 41a of the swinging arm 41 that is
is pulled during the return stroke of the packer 13, so the connecting rod 44 turns around the pin 50a, and the sweeper 12 releases the bundled grain culm.

Γ Culm Guide The base of the culm guide 51 is fixed to a mounting plate 52 fixed to a pin 50a that pivotally supports the connecting rod 44,
An annular cam 53 in which the crank pin 43a is inscribed is also fixed to the mounting plate 52.
3 is interlocked with the needle 13, which causes the culm guide 51 to swing while the needle 13 moves.
It is configured such that the grain culm that has been raked toward the arm part 10a of 0 moves forward and is pushed into the binding chamber 16 when the pack car retreats.

Incidentally, even if the culm guide 51 is not specially provided, the grain culm may be pushed into the bundling chamber 16 by its base as shown in FIG. 12e when the packer 13 returns.
In this case, it is even better if the base of the packer 13 is provided with a bulge as shown by a chain line.

Γ Nodule guide Nodule guide 5 that covers the building 8 and holder 9
4 has a guide groove 54a for guiding the string supplied by the needle 10 to the building 8, and a string holder 5 having a protrusion 55a between the building 8 and the holder 9 on the inner surface thereof.
5 is welded, and at the start of convergence, the string held by the holder 9 as shown in FIG. The hung string is supplied to the holder 9 through the front side (see b in the same figure).

Even if the string comes out of the holder 9 when the building 8 rotates to clamp the string, it will not be able to hold the string on the protrusion 5.
Since it is caught by 5a, there is no chance of making a mistake in pinching the string.

Further, when the bill 8 rotates to the position d in the figure to insert the string, the holder 9 rotates and draws the string supplied by the needle 10 into the recess at the base of the protrusion 55a, and the holder 9 side is moved from there. It is moved to the back side of the string holder 55 and is in a hooked state, and in this state, the knife 9d of the holder 9 cuts the string, so the protrusion 5
5a functions as a receiving blade and can reliably cut the string regardless of the type of string or other conditions, and there is no need to make small adjustments to the holder pressure or the string brake as in the conventional case.

Γ Binding Release Timing The harvested grain culm is guided by the guide plate 3 and guide rods 4 and 5 into the raking operation range of the packer 13, and when the culm car 13 scrapes it and retreats, the culm guide 51 advances and enters the binding chamber. 16 and repeat this operation to focus.

If the starting point on the output side of the one-turn clutch is set to 0 with respect to the packer shaft 7, then the packer 13 is at the position (a) shown in FIGS. 3 and 12a. (This point is set as 0 point in Figure 11a.) Now, when the amount of culms in the binding chamber 16 reaches a predetermined amount,
When the puller shaft 14 further rotates 60 degrees from the 0 point (A), the puller 13 shifts from (B) to the return stroke, and the culm guide 51 is at the most backward position.

Next, when the packer shaft 14 rotates to the 180 degree position, the culm guide 51 begins to advance into the culm passage 6 as shown by the x-ray in FIG.
As shown in FIG. 2c, the focused grain culm is pushed into the bundling chamber 16, so the sweeper 12 moves backward and pushes the sensing rod 30, which causes the starting arm 28 to rotate and the cam stopper 27 to move away from the receiving surface 21b of the cam plate 21. It separates and the taper pin 23 is pushed out downward.

At that time, since the rotation ratio between the input shaft 7 and the puller shaft 14 is 3:2 as described above, the input shaft 7 rotates once while the puller shaft 14 rotates 240 degrees.
In addition, since the two taper claws 18a and 18b are provided at 180 degree intervals, each time the pin is rotated 120 degrees with respect to the pin car shaft 14, the taper claw 18a or 18b passes directly under the taper pin 23 and engages with it. is forming a chance.

In other words, the taper claw 18a or 18b can be engaged with the taper pin 23 whenever the puller 13 reaches the 0 point (however, the number of revolutions of the input shaft 7 is set to 2 of the puller shaft 14).
If you double the number, you can use one tapered claw).

Therefore, either one of the taper claws 18a or 18b is attached to the taper pin 23 protruding downward.
The clutch plate 20 is activated by engaging at the same zero point (d) as in (a), and at the same time, the needle 10 is activated. The pushing part 10b compresses the pushed grain culm and hooks it in the process of pushing it towards the sweeper 12 (the needle 10 returns at the 120 degree position) (F)
The building 8 and the holder 9 are activated at the position (100 degrees), and the string winding and string cutting operations are completed at the (k) position (200 degrees).

At that time, since the needle 10 has moved away from the stopper 48 during its stringing stroke, the hook 46a of the actuating arm 46 enters the rotational trajectory of the pin 41a.
As shown in FIG. 12e, the hook 4 of the actuating arm 46
6a is hooked on and pulled by the pin 41a, the connecting rod 44 turns around the pin 50a, and the sweeper 12 pushes out the culm bundle to remove the knots and at the same time discharge it from the exit of the culm passage 6.

At the time of this discharge, the connecting rod 44 facing the exit portion of the culm passage 6 receives the stock base of the discharged grain culm and makes a prepayment.

Note that when the arm 10a of the needle 10 is placed above the link 44, this arm 10a makes the initial payment.

On the other hand, when the sweeper 12 starts the discharge operation, the pressing force against the sensing rod 30 becomes 0, and the spring 29
pulls the anti-reverse claw 24 and the cam stopper 27, receives the cam plate 21, and waits at a predetermined position, so the rotating taper pin 23 fits into the tapered hole 21a, and the one-turn clutch breaks at the zero point.

On the other hand, when the ejection is completed, the needle 10 has returned to its original position, and as the packer shaft 14 rotates, the stopper 48 comes into contact with the needle 10 and releases the hook 46a from the pin 41a at the (h) position. The spring 49 pulls the link 45 and returns the sweeper 12 to its original position.

In addition, the above-mentioned always rotating Patscar shaft 14
can be used as an input shaft, and the input shaft 7 can be used as a driven shaft.

Furthermore, in the above-mentioned embodiments, when a star foil for raking is provided on the packer 13 side, and when a grain culm pulling body equipped with a chain with a pulling claw is also provided on the bundling device side in the two-row cutting binder, etc. The packer shaft 14 can drive the star wheel, the chain of the grain culm pulling body, etc.

Furthermore, since the chain case 15 is formed with a concave portion on the feeding side and has a dogleg shape, the cutting blade 1 can be inserted into the concave portion as shown in FIG. It does not protrude and is easy to maneuver.

As described above, the present invention provides transmission shafts that rotate constantly on both sides of the culm passage, one transmission shaft is equipped with a one-turn clutch that drives the bill, holder, and needle, and the other transmission shaft is equipped with a one-turn clutch that drives the culm transmission shaft. Since the bodies are interlocked and connected, both transmission shafts can be used to transmit power using the simplest interlocking means such as a single chain, and the interlocking mechanism can be made thinner, allowing the ground clearance of the binding device to be significantly lowered. Since any transmission shaft can be used as an input shaft depending on the model, simple and rational transmission can be performed, and the weight and cost of the machine body can be reduced.

In addition, the other transmission shaft, which does not have a one-turn clutch, can be used to drive continuously rotating grain culm guiding devices such as packers, raking wheels, or grain culm pulling devices, which cannot be driven by intermittent rotating shafts such as knotted shafts. Can be driven.

[Brief explanation of drawings]

Fig. 1 is a plan view of the reaping and tying machine, Fig. 2 is a side view of the above, Fig. 3 is a plan view of the tying machine, Fig. 4 is a side view of the above, Fig. 5 a is a sectional view of the above, and b is a knot section. , FIG. 6 is an exploded perspective view of the one-turn clutch and its output part, FIGS. 7 and 8 are plan views of the clutch, FIG. 9 is a perspective view of the binding machine, and FIGS. 10 a and b. ，
c, d, e, f are action diagrams of the nodal part, Fig. 11 a is a timing diagram, b is a timing diagram of the conventional example, Fig. 11
Figures 2a, b, c, d, e, and f are binding action diagrams. 7... Input shaft, 10... Needle, 12... Sweeper, 13... Police car, 30... Sensing rod,
44... connecting rod, 46... operating arm, 51... culm guide, 53... annular cam, 54... knot guide, 55... string holder.

Claims (1)

[Claims] 1. Transmission shafts that constantly rotate are provided on both sides of the culm passage, one transmission shaft is equipped with a one-turn clutch that drives the bill, holder, and needle, and the other transmission shaft is interlocked with the culm feeder. A transmission device in a binding machine characterized by: