JPS5848132B2 - Ketsusokukino Kuratsuchikikou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clutch mechanism for a binding machine,
In particular, it is an object of the present invention to provide a clutch that has a simple structure with a small number of parts and pivot points, yet allows reliable clutch operation, and ensures that the clutch is stopped at a fixed position.

Hereinafter, embodiments will be described in detail based on illustrative drawings.

Reference numeral 8 denotes a tying machine, in which a string supply section C having a 21 dollar string is arranged on one side of the bundling space A, and a knotting section B is arranged on the other side.

Reference numeral 1 denotes a constantly rotating shaft that rotates around a vertical axis that is mounted on the node B, and 2 is a node drive shaft that is arranged concentrically with the shaft 1.

Reference numeral 3 denotes a movable clutch piece provided on the spline portion of the articulated drive shaft 2, and is provided so as to face a clutch 9 that engages with a clutch pawl 9' provided on the constantly rotating shaft 1, and the movable clutch piece 3 is provided oppositely to the clutch pawl 9' provided on the constantly rotating shaft 1. A clutch 4 is provided which connects and disconnects power between the shafts 2 and 1 by directional displacement.

Reference numeral 5 denotes a focus sensing device that protrudes from the tubercles B into the stem culm focusing space A, and is attached to a sensing shaft 10, which has a horizontally movable control device that moves along with the shaft toward the clutch 4. A clutch starter 7 is integrally extended.

The moving clutch piece 3 is fitted onto a spline 11 formed on the joint drive shaft 2 and is configured to be slidable in the axial direction thereof, and integrally includes a cam 6 that controls the operation of the focused pressure sensing device. At the same time, a part of the back surface of this cam 6 is provided with an inclined cam S1 for disengaging the clutch, and a contact for reliably stopping the clutch piece 3 at a certain position. For the time being, S3 is the dominant model.

The sliding clutch piece 3 is engaged and supported by the clutch starter 7 to maintain the clutch disengaged position.

Also formed on the clutch starter 7 side is an inclined cam surface S2 that comes into contact with the inclined cam surface S1 formed on the back surface of the cam 6 of the moving clutch piece 3, and following this, the contact surface A contact surface S3 is formed to contact S3 and stop the movable clutch piece 3 at a certain position, and due to the horizontal relative approach action of the clutch starter 7,
Through the cam action of both the cam surfaces S1 and S2, the cam 6
The clutch actuator 7 is engaged and overlapped vertically, and the movable clutch piece 3 integrated with the cam 6 is slid upwardly to disengage the clutch 4 by forcibly displacing it to the cutting side. The contact surfaces S3, S3 of the two contact surfaces S3, S3 are in contact with each other, and the moving clutch piece 3 is configured to be reliably stopped at a predetermined constant position.

Reference numeral 12 denotes a spring arranged to urge the clutch movable piece 3 downward.

Reference numeral 13 denotes a dogleg-shaped regulating device rotatably attached to the sensing shaft 10, and has a roller 14 at one end that comes into contact with the circumferential surface of the cam 6, and the other end is provided with a roller 14 that contacts the circumferential surface of the cam 6. A compression spring 15 with one end pivotally held is attached to the clutch starter 7, and when a predetermined binding start pressure is applied to the focus sensing device 5, the spring 15 is slightly compressed to allow the clutch starter 7 to swing horizontally.
Before the clutch 4 engages and completes one rotation, the regulation of the cam 6 is released and the roller 14 at one end becomes free and is configured to allow rotation when the convergence sensing device 5 passes and discharges the bundled stem culm. has been done.

The inclined cam surfaces S1 and S2 may be provided only on either the cam 6 side or the clutch starter 7 side.

Next, to describe the operation, when the focus sensor 5 senses that a predetermined amount of stem culms are now focused in the focus space A, the clutch starter 7, which is integrally connected, is compressed by the pressure. It rotates while pressing the spring 15.

Then, the contact surface S3 of the clutch starter 7 is engaged with the contact surface S3 of the cam 6 of the eave clutch piece 3 as shown in FIG. The contact surfaces S3, S3 slide and swing horizontally to engage or disengage, allowing the sliding clutch piece 3 to be displaced downward by the biasing force of the spring 12.

As a result, the clutch pawl 9' of the town moving clutch piece 3 is always positioned within the rotation trajectory of the clutch pawl 9' provided on a part of the rotating shaft 1, and the clutch pawl 9' is rotated at a predetermined timing. The clutch 4 rotates and engages, and the clutch 4 engages.

Knotting is performed by the rotation of the knotting drive shaft 2, and when the knotting is completed, the cam 6 is rotating, the rotational restriction of the focusing sensor 5 is released, and the roller 14 at one end is in a free state. When the nodule culm is released by actuation of a known release arm, the sensing device 5 rotates to allow the culm to pass.

Then, the town moving clutch piece 3 rotates to the clutch starter 7 which has returned to its original position after the stalk culm is released, and the town moving clutch piece 3 rotates.
The inclined cam surface S1 formed on the back surface of the cam 6 rides on the cam surface S2 of the clutch starter 7, and the cam action displaces the moving clutch piece 3 upward, and the clutch pawls 9, 9' While releasing the engagement, the cam 6
When the contact surface S3 of the clutch starter 7 contacts the contact surface S3 of the clutch starter 7 and the clutch pawls 9, 9l are disengaged, the town moving clutch piece is firmly and forcibly brought into this contact position. The disengagement operation of the clutch 4 at the end of one rotation is completed.

In summary, as described above, in the present invention, the movable clutch piece 3 of the clutch 4 is connected with the regulating cam 6 for the sensing device 5, and the clutch actuator 7 connected from the sensing device 5 directly activates the clutch piece 3. Since it is configured to be operated, in the conventional configuration in which the clutch is operated by engagement between a protrusion and a swinging roller, the swinging of the roller is restricted and the cam of the clutch is used to regulate the movement of the sensing device. The required pivot shaft for the clutch starter can be omitted, the number of parts can be reduced and the structure can be simplified, and the structure can be moved using small parts such as the swinging roller. There was no need to construct a clutch, the clutch could be operated reliably, and it could be used robustly over a long period of time.

In particular, in the present invention, when the clutch actuator 7 and the cam 6 disengage the clutch to displace the eave clutch piece 3 to the disengaged side, the cam 6 is operated via the inclined cam surface S1 formed on at least one of the After the town motion clutch 3 is cut upward and operated, the contact surfaces S3, S3 provided on the cam 6 and the clutch starter I, respectively, are
By this contact, the cam 6 can be forcibly and reliably stopped at this contact position, which has the effect of preventing the clutch from being engaged again due to the inertia of the inertial clutch piece. .

Note that although numbers are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings illustrate the actual state of the clutch mechanism of the binding machine according to the present invention, 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 main part. FIG. 4A and FIG. 4B show a view along the line Vl-Vl in FIG. 3, where A shows the clutch disengaged state and D shows the clutch engaged state. DESCRIPTION OF SYMBOLS 1... Continuously rotating shaft, 2... Connection drive shaft, 3... Swinging clutch piece, 4... Clutch, 5... Focusing sensing device, 6...cam, 7...clutch starter, A...focusing space, B...node, S1... - Inclined cam surface, S3... contact surface.

Claims (1)

[Claims] 1. A constant rotation shaft 1 and a nodule drive shaft 2 that rotate around the vertical axis are installed in the nodule B arranged on one side of the stem culm focusing space A.
are arranged concentrically, and a clutch 4 is provided which connects and disconnects power between both shafts 1 and 2 by displacement of a movable clutch piece 3 provided on the node 1 drive shaft 2 in the direction of the rotation axis, and the node B A focusing pressure sensing device 5 protruding into the stem culm focusing space A is provided, and a cam 6 for regulating the operation of the focusing pressure sensing device 5 is connected to the moving clutch piece 3. A clutch starter 7 that engages and supports the clutch disengaged position is connected to the focused pressure sensing device 5 and arranged in a horizontally movable position, and the cam 6 and the clutch starter 7
An inclined cam surface S1 is formed on at least one of the movable clutch pieces 3 to forcibly displace the movable clutch piece 3 to the disengaged side by vertically engaging and overlapping the cam 6 and the clutch starter 7 by a relative approach operation in the horizontal direction; A clutch mechanism for a binding machine, characterized in that the cam 6 and the clutch starter 7 are provided with contact surfaces S3, S3, respectively, for regulating the stop position of the moving clutch piece 3 by the clutch starter 7.