JPS593162B2 - Katsuchikikou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clutch mechanism for a binding device.

The clutch mechanism of the conventional binding device is based on Utility Model Publication No. 48-36499.
As known from the publication, a spring for adjusting the focusing pressure of the focusing pressure sensing device is interposed between the clutch starter and a regulating device for regulating the attitude of the clutch starter connected to the focusing pressure sensing device. However, the spring is disposed on the side away from the drive shaft with respect to the pivot shaft of the regulating device, and the pivot shaft of the clutch starter is not connected to the pivot shaft of the regulating device. is separately provided on a bracket that is integrally formed with the regulating device, and requires a large area around the drive shaft.

For this reason, in order to accommodate these devices within the case, the entire case has to be large, and as a result, the amount of protrusion of the focused pressure sensing device that is made to protrude outward from the case inevitably becomes long. The moment force needed to receive the converging stem culm was also large (because of this, the spring pressure for adjusting the sensing pressure for the sensing tool, which had a large protruding length) had to be large as well.

In order to reduce the size of the clutch case, the present invention compactly houses the entire clutch mechanism within the case, and also makes the spring for adjusting the sensing pressure of the focused pressure sensing device as small as possible.
The purpose is to configure the entire binding device to be lightweight and inexpensive.

The clutch mechanism of the tying device of the present invention intermittents power to the nodule drive shaft of the nodule section and the nodule drive shaft of the nodule section and the nodule drive shaft of the nodule section and the nodule drive shaft of the nodule section. A starter for a constant-angle rotation clutch is integrally connected, and the intermediate portion of a dogleg-shaped spring holder that is separate from the focused pressure sensing device and that surrounds the nodule drive shaft is rotated. The spring receiver is pivotably supported around an axis, and one end side of the spring receiver is brought into contact with a cam provided on the tubercle drive shaft to regulate the posture of the entire spring receiver, and the spring receiver is connected to the starter. , a spring for setting the sensing and focusing pressure is interposed between the spring holder and the other end thereof.

Therefore, ■ The spring for adjusting the sensing pressure of the focused pressure sensing device and the clutch mechanism such as the spring holder are all arranged so as to surround the node drive shaft, and for this purpose the side wall of the case is placed close to the pivot shaft of the clutch starter. The case that covers the entire clutch mechanism can be small and compact.

@ Since the clutch starter and the spring holder are configured to be able to swing freely around the same axis, the space required for their operation and arrangement is small and compact.

Because the spring is not placed outside the pivot shaft of the clutch starter (that is, on the opposite side of the drive shaft), the length from the pivot shaft of the clutch starter to the tip of the focusing pressure sensor can be made small. , a small spring can be used for adjusting the sensing pressure, and the entire clutch mechanism is lightweight and can be constructed at low cost.

This effect has been achieved.

Examples will be described in detail below based on the drawings.

Reference numeral 8 denotes a tying machine, which has a string supply section C with needles arranged on one side of the convergence space A, and a knotting section B on the other side.

Reference numeral 9 denotes a constantly rotating shaft that rotates around the vertical axis that is mounted on the node B, and 2 is a node drive shaft that is arranged concentrically with the shaft 9.

10, a compression spring 13 is attached to the spline portion of the knot drive shaft;
A movable clutch piece is provided through a movable clutch piece, and a clutch pawl that engages with a clutch pawl provided on the constantly rotating shaft 9 is provided so as to face each other, and the displacement between the two shafts 9 and 2 is caused by displacement in the direction of the rotation axis. It constitutes a constant angle rotation clutch that performs power on/off.

Reference numeral 1 denotes a focusing sensing device which faces the stem culm focusing space A from the tubercle B and projects into this space A, and is attached to a rotating shaft 11 and mounted on the shaft so as to be swingable.

Reference numeral 4 denotes a starter for connecting and disconnecting the power of the clutch 8, which is integrally connected to the focused pressure sensing device 1 via the rotation shaft 11.

Reference numeral 5 denotes a dogleg-shaped spring holder whose intermediate portion is swingably supported around the axis of the rotation shaft 11, and which surrounds the nodule drive shaft 20, and has a cam T described later at one end. A spring 6 for setting the sensing and focusing pressure is interposed and connected between the other end and the starter 4.

Reference numeral 1 denotes a cam provided on the knot drive shaft 2, and is configured to abut the spring receiver 5 with a roller at one end thereof to regulate the posture.

Reference numerals 1, 2, and 12 are inclined cam surfaces formed on a portion of the clutch starter 4 and the cam 7 for disconnecting the clutch tip.

Next, to explain the operation, when the sensing device 1 senses that a predetermined amount of stem culms have been focused in the focusing space A, the sensing device 1 uses that pressure to rotate while pressing the spring 6 while being regulated by the cam 7. A clutch starter 4 that is displaced and connected integrally with the clutch starter 4
Rotate horizontally.

Then, the clutch starter 4 is disengaged from the state in which it is overlapped with the cam 7 of the movable clutch piece 10 as shown in FIG. 4A, and the movable clutch piece 10 releases its compression spring. Allows downward sliding displacement with 13 auxiliary forces.

As a result, the clutch pawl of the movable clutch piece 10 is always positioned within the rotation locus of the clutch pawl provided on a part of the rotating shaft 9, and the clutch pawl rotates and engages at a set timing. is performed, and the constant angle rotation clutch 3 is engaged.

When the knotting action is completed by the rotation of the knotting drive shaft 2, the cam 7 has rotated, and the roller at one end of the spring holder 5 is in a free state, and the focus sensing tool 1 The restriction on rotation is released, and when the nodule culm is subjected to a release action by the operation of a known release arm, the sensing device 1 rotates to allow passage of the culm.

Then, the cam T of the movable clutch piece 10 rotates to the clutch starter 4 which has returned to the culm release halo, and the inclined cam surface 12 formed on this cam 7 becomes the cam surface 12 of the starter 4. The movable clutch piece 3 is displaced upward by the cam action, the clutch pawl is disengaged, the constant angle rotation clutch 3 is disconnected, and the constant angle rotation operation is completed.

[Brief explanation of drawings]

The drawings show an embodiment of the clutch mechanism of the binding device according to the present invention, in which Fig. 1 is a schematic plan view of the whole, Fig. 2 is a partially expanded vertical side view of the main part, and Fig. 3 is a part of the main part. Developed cross-sectional plan,
Fig. 4A shows a view taken along the line ■-■ in Fig. 3, where A shows the clutch disengaged state and mouth shows the clutch engaged state. 1... Focused pressure sensing device, 2... Node drive shaft, Ji... Constant angle rotation clutch, 4...
Starter, 5... Spring holder, 6... Spring, 7... Cam.

Claims (1)

[Claims] 1. A focused pressure sensing device 1 that faces the stem culm focusing space A and is pivotably mounted around a rotation axis 11, and a constant angle rotation clutch that connects and connects power to the knot drive shaft 2 of the knot portion B. 3 is integrally connected to the actuator 4, and the intermediate portion of the dogleg-shaped spring holder 5, which is separate from the focused pressure sensing device 1 and surrounds the nodule drive shaft 20, is rotated. It is pivotably supported around an axis 11, and one end side of the spring receiver 5 is brought into contact with a cam 7 provided on the tubercle drive shaft 2 to regulate the posture of the entire spring receiver 5. , a clutch mechanism for a binding device in which a spring 6 for sensing and focusing pressure setting is interposed between the starter 4 and the other end side of the spring holder 5.