JPS597287B2 - Stem culm binding device - Google Patents

Description

Detailed Description of the Invention The present invention provides a focusing pressure sensing door at the rear of the stem culm focusing space, and activates a constant angle rotation clutch in conjunction with detection of focusing pressure above a certain level to intermittently activate each nodulation mechanism. The present invention relates to a stem culm binding device configured to be driven.

In recent years, it has been considered to configure the stem culm release tool installed in this type of stem culm binding device to be driven in reciprocating rotation around a fixed fulcrum. In other words, it is designed so that both forward and backward movements can be operated properly to perform smooth and good tying work.

Embodiments of the present invention will be described below based on the drawings.

The diagram is. The stem culm binding device mounted on the binder is shown, and a focusing space B is located following the stem culm feeding path A, and on both sides of this space B, a 21 dollar 1, a stem culm raking packer 2, and two upper and lower tiers of stems are placed. A string supply section equipped with culm release tools 3a, 3b, a sensing door 4, etc., and a knot section equipped with a knot building 5, a string holder 6, etc. are provided.

To explain the string supply section, three shafts, a packer shaft 7, a twenty dollar shaft 8, and a door shaft 9, are erected and supported in a binding case 10 in parallel with each other, and the packer shaft 7 is mounted outside the case. An inlet sprocket 7a is fixed to the end, and this sprocket }? External power is constantly transmitted from a.

A first transmission gear 11 is provided inside the case of the packer shaft 7.
This gear 11 and the second transmission gear 12 loosely fitted onto the twenty-one dollar shaft 8 are engaged with each other.

A constant angle rotation clutch 13 is interposed between the twenty-one dollar shaft 8 and the second transmission gear 12, and will be described in detail below.

That is, a semicircular arc-shaped cam plate 14 as an example of a rotating body is fixed to the needle shaft 8, and a swinging clutch piece 15 is pivotally supported on the lower surface of the cam plate 14.

This clutch piece 15 is configured to be able to engage with a locking portion 16a formed on a second rotating member 16, which will be described later, and as the engagement with the locking portion 16a is released, the biasing force of the spring 18 is applied. The second transmission gear 12 is configured so as to swing and abut against and be locked by a locking protrusion 17 provided on the second transmission gear 12.

As shown in FIGS. 4A to 4B, when the engagement between the clutch piece 15 and the locking portion 16a is released as described above, the clutch piece 15 comes into contact with the locking protrusion 17 and is locked. As a result, the dollar shaft 8 rotates, and when the clutch piece 15 is engaged with the locking portion 16a again after one rotation,
The clutch piece 15 is pushed by the inclined surface at the tip of the locking protrusion 17 and swings away from the protrusion 11, so that the rotation of the twenty-one dollar shaft 80 is stopped.

The packer 2 is interlocked with the packer shaft 7, and is constantly driven so as to sequentially collect the stalks fed along the path A into the focusing space B. , which is interlocked and connected to the needle shaft 8, and as described above, as the needle shaft 8 is intermittently rotated via the constant angle rotation clutch 13, the binding cord is connected to the converging stem culm. It is configured to operate intermittently to feed the tube to the knot while winding it around the tube.

On the other hand, the stem culm release tool 3a. 3b is fixed to the door shaft 9, and the sensing door 4 is pivotally connected to the lower discharge device 3b in a state in which it is elastically biased in a constant position via a helical spring 19.

A partial gear 20 is fixed to the door shaft 9, and the partial gear 20 is formed on a part of the edge of a first rotating member 21 made of a flat plate material and pivotally connected to the door shaft γ. It is configured to constantly engage with the gear portion 21a.

The second rotating member 16 is pivotally attached to the packer shaft 7 while being located below the first rotating member 21, and
A third rotating member 22 and a spring 2 are integrally connected to the first rotating member 21 and are pivotally connected to the packer shaft 7.
They are interlocked and connected via 3.

The third rotating member 22 is configured to be positioned as the roller 22a that contacts the outer peripheral surface of the cam plate 14 contacts the arcuate cam portion of the cam plate 14. Along with positioning, the first and second rotating members 21.
16 is rotated and pressed in a certain direction via a spring 23.

Further, the cam plate 14 has first and second cam surfaces S1 and S as driven arms formed on the edge of the first rotating member 21.
A row 214a as a drive cam that comes into contact with 2 is attached.

Next, the operation of each part will be explained based on FIGS. The rotating member 16 is swung backward against the biasing force of the spring 23, and as the second rotating member 16 swings, the constant angle rotation clutch 13 is engaged, and the cam plate 1
4 is rotated.

As the cam plate 14 rotates, first the third rotating member 2
2 is released from contact with the roller 22a, and subsequently, the cam plate 140 roller 14a contacts the first cam surface S of the first rotating member 21, and the first rotating member 21 is rotated. As a result, the sensing door 4 is forcibly swung in a direction away from the focused culm, and at the same time, the culm release tool 3a. 3b is forcibly swung to release the focused culm out of the device.

At this time, the rotation restriction abutment portion 2lb formed on the first rotation member 21 abuts the non-transmission portion of the partial gear 20,
The rotation limit position of the first rotation member 21 (in other words, the rotation limit position of the stem culm release tools 3a, 3b) is regulated.

Next, when the row 214a comes into contact with the second cam surface S1 of the first rotating member 21, the first rotating member 21 and the second rotating member 16 are moved back, and accordingly, the first rotating member 21 and the second rotating member 16 are moved back. The culm release tools 3a, 3b and the door 4 are moved back, and then the row 222a comes into contact with the arcuate cam surface of the cam plate 14, and the constant angle rotation clutch 13 is disengaged.

Therefore, the discharge tools 3a, 3b and the door 4 are made up of the roller 14a of the cam body 14 that rotates once when the constant angle rotation clutch 13 is engaged, and the cam surfaces S1, S2 formed on the first rotating member 21. It is configured to be rotated back and forth through an angle of less than 360° via a cam mechanism.

Further, the sensing door 4 is configured to bend and swing around a pivot point with the lower discharge tool 3b when swinging backward.

Further, the tip edge T of the upper discharge tool 3a is formed in an arc shape centered on the axis of the door shaft 9. It is constructed so that it can swing without pushing down the subsequent stem culm during reciprocating swinging, and when in the most dog-like swinging position, the entrance side of the focusing space B is closed with the tip edge T to prevent the subsequent stem culm from being pushed down. The culm is prevented from entering space B.

To explain the joint part, the sprocket 24 fixed to the twenty dollar shaft 8 and the drive shaft 25 pivotally connected to the binding case 10 are interlocked and connected via a chain 26, and the upper end of the drive shaft 25 is is timing gear 27
is fixed.

This gear 21 has a gear portion 27a formed only in a part in the circumferential direction, and as the twenty-one dollar shaft 8 rotates as described above, the input gear 5a of the building 5 and the holder 6,
6a to drive the building 5 and holder 6.

Reference numeral 28 in the figure is a transmission shaft to a pulling device (not shown), and the power from the sprocket 29 integrally formed with the second transmission gear 12 is transmitted to the idler pivoted on the door shaft 9. A chain is transmitted through a rotating sprocket 30.

Next, the binding operation in the above configuration will be explained.

That is, when the packer 2 successively sweeps the stem culms into the focusing space B and the door 4 is swung backward as the stem culms are focused in a fixed amount, the constant angle rotation clutch 13 is engaged.
Needle 1 wraps a string around the converging stem culm, and Bill 5
, the string is knotted with the cooperation of the holder 6, and then the stem culm release tool 3
The operations of a and 3b to release the stem culm bundle to the outside of the device are repeated in sequence.

In summary, the stem culm bundling device according to the present invention has the structure described above, in which the stem culm bundle releasing device is fixed to the rotating shaft to which the sensing door is pivotally connected, and the stem culm bundle release device is rotated in a certain direction by a spring. The biased rotating member and the rotating shaft are interlocked to bias the sensing door to rotate in the stem culm receiving direction;
The rotating member is provided with a starter for the constant angle rotation clutch, and the rotating body driven to rotate at a constant angle via the clutch is provided with a roller as a drive cam. By forming a first cam surface for forward motion and a second cam surface for backward motion as a power arm, there is a space between the rotary body and the rotary member that allows the rotary body to rotate at a constant angle in a certain direction. Accordingly, a cam mechanism is configured to forcibly rotate the rotating member reciprocally at a constant angle, and the rotating shaft is configured to forcibly rotate reciprocally at a constant angle smaller than 360° by the reciprocating rotation of the rotating member. characterized by something.

In other words, the rotary shaft that supports the culm release tool is forcibly rotated through a cam mechanism both in forward and backward motions to drive the culm release tool back and forth, so that the culm release during reciprocation is ensured. Not only can the dispensing device be used to perform the same operation, but even if the rotation of the discharging device is resisted by contact with the subsequent stem culm during the return movement, it has the advantage of being able to reliably return to the desired position without being affected by this. be.

In addition, in a binding device in which the stem culm release tool and the door are integrally connected, the retracted release tool is moved back to the forward movement side by the reaction force when it is returned to a predetermined position. However, as in the present invention, the release tool can be reliably and forcibly released through the cam mechanism as in the present invention. There is also the advantage that such troubles are less likely to occur if the motor is driven.

[Brief explanation of the drawing]

The drawings show an embodiment of the stem culm binding device according to the present invention.
2 is a plan view, FIG. 3 is a plan view showing the inside of the binding case, and FIG. 4 is a plan view showing the operating state. 3a, 3b... Stem culm release tool, 4... Sensing door, 9... Rotating shaft, 13... Fixed angle rotation clutch, 14... ...Rotating body, 14a...
...Roller, 16.21 ...Rotating member, 16
a... Starter, 23... Spring,
B: Focusing space, S1: First cam surface, S2: Second cam surface.

Claims (1)

[Claims] 1 A focused pressure sensing door 4 is provided at the rear of the stem culm focusing space B,
A fixed angle rotation clutch 13 is activated in conjunction with the detection of a focused pressure above a certain level.
The stem culm bundling device is configured to intermittently drive each mechanism for nodulation by activating the stem culm bundle releasing devices 3a and 3b, which are fixed to a rotating shaft 9 to which the sensing door 4 is pivotally connected. The rotating members 16, 21, which are rotationally biased in a certain direction by the spring 23, and the rotating shaft 9 are interlocked to rotate and bias the sensing door 4 in the direction of receiving the stem culm. Member 16.
21 is provided with a starter 16a of the constant angle rotation clutch 13, and a roller 14a is attached as a drive cam to the rotating body 14 which is driven to rotate at a constant angle via the clutch 13.
On the other hand, by forming a first cam surface S1 for forward motion and a second cam surface S2 for backward motion as driven forces on the rotary members 16 and 21, the rotary body 14 and the rotary member 16
．． A cam mechanism is constructed between the rotating member 16.21 and the rotating member 16.21 to rotate the rotating member 16. 21. A stem culm binding device characterized in that the rotating shaft 9 is forced to rotate reciprocatingly at a constant angle smaller than 360° by reciprocating rotation of the stem culm 21.