JPH056745Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a structure for adjusting the pressure of the tying clutch of a tying machine attached to a self-propelled self-propelled, combine harvester, etc., for tying grain culms. It is.

(b) Prior Art Conventionally, in binding machines, in order to adjust the amount of bundled bundles, a clutch spring for quantitative binding is provided in a binding mission case and connected to a door, and the spring pressure is applied to the outside. Structures for adjusting from 0 to 1 are well known.

For example, Japanese Utility Model Application Publication No. 50-119541.

(c) Problems to be solved by the invention By the way, tying machines can be divided into quantitative tying machines, which bind a fixed amount of grain culm bundles, and constant tying machines, which bind several bundles together. In quantitative tying machines, the tying clutch is operated by the grain culm compression force applied to the door, so the spring force of the clutch spring is set relatively high.
Since the constant tying machine operates the tying clutch by measuring the number of bundles, the clutch spring is set to a relatively low spring force that is sufficient to engage the clutch pawl with the clutch piece. The door is removed to avoid sensing the grain culm compression force.

In the conventional technology, even if a quantitative tying machine is intended, the clutch spring can be easily adjusted from the outside, so the spring force can be adjusted to a value equivalent to the clutch spring used in a constant tying machine. To use the machine as a constant binding machine, in addition to removing the door, the binding mission case must be disassembled, and a drive is required to forcibly remove the clutch pawl from the clutch piece by receiving commands from the bundle measuring section during internal linkage. This requires extensive modification.

This invention makes it possible to externally adjust the spring force of the clutch spring over a wide range of areas, from adjusting the amount of binding for quantitative tying machines to low pressure for constant tying machines. This makes it possible to easily attach the binding mechanism from the outside without disassembling the binding case, and it is possible to easily change the specifications of quantitative determination and constants using a single binding machine.

(d) Means for solving the problem The purpose of the present invention is as described above, and the present invention is constructed as follows to achieve the purpose.

A sliding rod 31 that engages with a clutch piece 33 for transmitting power to a timing shaft 24 mounted on the binding mission case 1 is made slidable against a clutch spring 27 interlocked with the door 13. An arm 14 that is slidably connected to the arm 14 is disposed outside the case, and several pressure adjustment holes are opened, and a spring 19 is interposed between the pressure adjustment hole and the fixed side, and a constant The bundling drive part is detachable.

(E) Example The configuration of the present invention will be explained based on an example shown in the attached drawings.

Figure 1 is a plan view of the quantitative binding machine. Figure 2 is a rear view of the main parts of the present invention. FIG. 3 is a back view showing the same effect.
Figure 4 is a rear view of the main parts of the constant binding machine.
FIG. 5 is a diagram showing another example.

To explain the overall configuration of the quantitative binding machine in FIG.
A swing arm 6 is fixedly mounted by protruding, a swing link 8 for swinging the discharge arm 7 is pivotally supported at the tip of the swing arm 6, and the swing link 8 protrudes from the tip of the tubercle frame 2. A connecting link 10 is pivotally connected between the arm 9 and the arm 9. Then, a knot building 3 and a string holder 4 are installed inside the knot frame 2 to enable knotting.

In addition, there is a door 1 at the bottom of the binding case 1.
3 is fixedly installed on the door shaft 15, and extends so that the tip of the door 13 faces into the rotation locus of the discharge arm 7, and the part car 11 has its midway portion pivoted to the tip of the arm 17 that is fixedly installed on the input shaft 16. As the arm 17 rotates, the grain culm is swung to be pushed into the bundling space A formed between the door 13 and the knot frame 2. Further, a rotating base of the needle 12 is fixed on the door shaft 15, and as the door 13 rotates, the tip through which the binding string is passed is rotated into the knotting frame 2 and knotted.

The configuration of the clutch device for quantitative tying is the second one.
As shown in the figure, a boss 20 having a protruding part 20a is fitted onto the door shaft 15, a connecting link 21 is pivotally connected to the protruding part 20a, and a connecting stay 22 and a roller 42 are pivotally connected to the other end of the connecting link 21. The other end of the connecting stay 22 is pivotally supported by one side arm 23c of an arm 23 pivotally supported on the input shaft 16.

The arm 23 is formed into a dogleg shape, the center part of the arm 23 is pivotally supported by the input shaft 16, a support protrusion 23b protrudes from the middle part of the arm 23a on the other side, and a spring support is provided on the support protrusion 23b. The shaft 26 is inserted, and the support shaft 26 is fitted with the clutch spring 27, the other end of which is fixed to the binding mission case 1, is slidably inserted into the upright portion 29a of the plate 29, and is engaged with the nut 30. It has been stopped. A pin 32 projects from the tip of the arm 23a and is engaged with a constricted portion 31a of a sliding rod 31, which will be described later.

Further, a sliding rod 31 is inserted into the upright portion 29a of the plate 29 and the pipe portion 29b fixed to the plate 29, and the sliding rod 31 has a constricted portion 31a at the center and a contact portion 31b at one end. The tip on the other side protrudes toward a cam plate 36, which will be described later. The constricted portion 31a locks the pin 32, and the abutment portion 31b locks a pin 35a protruding from the tip of an arm 35 fixed to the rotating shaft 34.

The rotation shaft 34 is rotatably supported by the binding mission case 1, and an arm 35 is attached to the inner end of the case.
An arm 14 is fixed to the outer end of the case. The arm 14 is slidably connected to the slide rod 31 via a pivot shaft 34 against the clutch spring 27. A pressure adjustment hole 14 is provided at the rotation base of the arm 14.
a, 14b...14f are opened, and locking portions 1a, 1b are provided on the other binding mission case 1, and between one of the pressure adjustment holes 14a, 14b...14f and one of the locking portions 1a, 1b. A spring 19 is interposed.

The other end of the sliding rod 31 engages a clutch piece 33 attached to a cam plate 36 fixed to the timing shaft 24. In other words, the clutch piece 3
3 has a substantially triangular shape, the center of which is pivotally supported by a pin 37 protruding from a cam plate 36, one apex 33a is locked to the sliding rod 31, and one apex 33b has a protrusion 33d protruding. When the top portion 33a is unlocked, the protrusion 33d engages with a protrusion of a loose gear (not shown) on the timing shaft 24, causing the cam plate 36 to rotate. The loosely fitted gear is always in mesh with a gear fixed to the input shaft 16. The other protrusion 33c comes into contact with the boss 40 loosely fitted onto the timing shaft 24 and becomes a stopper when the lock is released.

The cam plate 36 is fixed to the timing shaft 24, has a half-moon shape, and has a large diameter portion 3.
A notch 36a is provided in a part of the circumference of 6c,
A stopper 41 is engaged during reverse rotation to prevent reverse rotation. Further, a roller 42 provided at the pivot portion of the connecting link 21 and the connecting stay 22 is in contact with the circumferential portion.

To make the above-mentioned fixed quantity binding machine into a fixed quantity binding machine for use in a self-propelled self-unfastening device, etc., as shown in Figs. 4 and 5, a counter 46 for counting the number of bundles brought into the binding machine is provided on the feed chain or at the entrance of the binding machine, and the number of bundles is compared with the set number using a bundle number select dial 47. A controller 49 is also provided to control the binding operation so that it can be performed arbitrarily using a manual clutch 48, and an operating signal is sent to a solenoid 43, which is an example of a drive unit for the fixed quantity binding machine. In Fig. 4, the solenoid 43 is an expandable type, and is connected to an attachment plate 43 additionally connected to the arm 14.
In Fig. 5, a rotary solenoid 43 is provided on the upper end of the rotating shaft 34, and when a set number of bundles enter the binding space, the solenoid 43 is actuated to pull the sliding rod 31, thereby operating the binding clutch.

Furthermore, when changing the quantitative binding machine to a fixed quantity binding machine, it goes without saying that the door 13 is removed and a bundle guide that is held until a predetermined number of bundles are bound is positioned in the binding space.

(F) Operation of the device With such a configuration, the operation of the fixed quantity binding machine will be explained with reference to Figs. 2 and 3. As shown in Fig. 2, the straw is fed into the binding space A, and when it is pushed in by the packer 11 and reaches a certain amount, the door 13 is rotated as shown in Fig. 3, and the connecting link 21,
The connecting stay 22 and the arm 23c are rotated downward, and the pin 32 contacts the narrowed portion 31a of the sliding rod 31.
4. The clutch piece 33 is then slid to the right, and the engagement of the clutch piece 33 is released.

In this case, the door 13 can be rotated when it overcomes the biasing force of the clutch spring 27, and the amount of binding can be adjusted by rotating the nut 30. Adjustment can be made from the outside by changing the locking position of the spring 19. That is, when the locking position of the spring 19 is the pressure adjustment hole 14a farthest from the rotating shaft 34 and the locking portion 1a, the spring 19 assists the spring force of the clutch spring 27, and the sliding rod 31 is pushed in the direction. Since it acts to the maximum on , the operating pressure of the binding clutch can be increased
It is advantageous when binding a large amount of grain culms.

When the spring 19 is replaced from the pressure adjustment hole 14b to 15c closer to the rotation shaft 34, the force for pushing the sliding rod 31 becomes weaker, and as the spring 19 is replaced from the locking portion 1b and the pressure adjustment hole 14f to 14d, Conversely, since it acts in a direction to pull out the sliding rod 31 against the clutch spring 27, the operating pressure of the bundling clutch gradually decreases, which is advantageous when bundling a small amount of grain culms.

In the case of a constant tying machine, when a certain number of bundles is reached, the solenoid 43 is driven, and the rotating shaft 34 is rotated to slide the constricted portion 31a of the sliding rod 31 to the right, thereby locking the clutch piece 33. It will be canceled. At this time,
A spring 1 is installed on the pressure adjustment hole 14d side of the arm 14.
If 9 is locked, the sliding rod 31 is given a force against the clutch spring, so the clutch operating pressure is low and the capacity of the solenoid 43, that is, the suction force can be small.

When the lock is released, the clutch piece 33
Due to the biasing force of 9, the top portion 33c
When the protrusion 33d rotates to the side, the protrusion 33d comes into contact with the protrusion 50 of the loosely fitted gear on the timing shaft 24, power is transmitted from the input shaft 16, and the cam plate 36 is rotated in the direction of arrow B. Therefore, timing axis 2
4 is rotated, and the power thereof rotates the discharge arm 7, knot building 3, etc., and as the door 13 is rotated, the needle 12 is also rotated, and knotting is performed.

When rotated further, the roller 42 reaches the small diameter portion 36b of the cam plate 36, and the door 13 opens.
Then, as the roller 42 rides on the large diameter portion 36c, the top 33a of the clutch piece 33 is locked to the sliding rod 31, the protrusion 33d is disengaged from the protrusion 50, and the rotation of the cam plate 36 is stopped. This process is repeated to form a bond.

(g) Effects of the invention Due to the structure and operation described above, the present invention has the following effects.

First, the operating pressure of the binding clutch can be easily changed from the outside, which is effective in adjusting the binding amount of a quantitative binding machine.

Second, by using an arm that adjusts the operating pressure of the tying clutch and attaching a drive unit for constant tying to the arm, the specification can be easily changed to a constant tying machine without disassembling the quantitative tying machine. be.

Thirdly, by lowering the operating pressure of the tying clutch by the arm, the capacity of the constant tying driving section can be kept small, resulting in cost reduction.

[Brief explanation of the drawing]

Figure 1 is a plan view of the quantitative binding machine. Figure 2 is a rear view of the main parts of the present invention. FIG. 3 is a back view showing the same effect.
Figure 4 is a rear view of the main parts of the constant binding machine.
FIG. 5 is a diagram showing another example. 1... Binding mission case, 13... Door,
14...Arm, 14a-14f...Pressure adjustment hole, 19...Spring, 31...Sliding rod,
33...Clutch piece.

Claims (1)

[Scope of utility model registration request] A sliding rod 31 that engages with a clutch piece 33 for transmitting power to a timing shaft 24 mounted on the binding mission case 1 is made slidable against a clutch spring 27 interlocked with the door 13. An arm 14 that is slidably connected to the arm 14 is disposed outside the case, and several pressure adjustment holes are opened, and a spring 19 is interposed between the pressure adjustment hole and the fixed side, and a constant A tying clutch pressure adjustment device for a tying machine, characterized in that a tying drive part is detachable.