JPH0115723B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an intermittent rotation device using an actuator that can rotate a rotary disk in one direction at a constant angle.

When using an actuator that reciprocates a rotating member in a cylinder using hydraulic pressure to move a rotary disk or the like by a fixed angle in one direction, when the rotating shaft connected to the rotating member moves back, In order to prevent the rotating disk from returning together with the rotating shaft, a means for temporarily disconnecting the rotating member from the rotating disk is required.

In the rotary molding machine described in Japanese Patent Application Laid-open No. 52-82967, a rotating arm is attached to the free end of a rotating shaft extending from the cylinder to the center of the rotary disk, and a rotating arm is provided at the tip of the arm so that it can move in and out. The rotating shaft and the rotary disk are connected through a pin, and when moving forward, the pin is attached to the rotating disk, and during backward movement, the pin is removed from the rotating disk and the connection is severed, leaving only the arm and the rotating shaft. is set so that the rotating disk rotates by a certain angle along with the rotating shaft only during reciprocation.

There are also models that use a ratchet mechanism in addition to the arm and pin, but in any case, in an intermittent rotation device that uses an actuator, there is a space between the rotating shaft and the rotating disk that limits the rotation of the rotating disk to one direction. It is said that there must be a means.

For this reason, even if the rotating part is simplified by an actuator, installation space is required for other parts or mechanisms that rotate intermittently at the connecting part of the rotating disk, which causes the rotating disk to have an unnecessarily large diameter. As the engine gets older, it also becomes heavier and requires more power to start. In addition, the reaction force at the time of stopping acts heavily on the rotating part, making it easy to damage the rotating member or its stopper, so the slow turn before stopping must be done early, and there is a limit to the speed of the rotary disk. There were some problems, such as:

This invention was devised to solve the above-mentioned problems, and its purpose is not to require a large installation space at the connection part of the rotary disk, and to easily connect or disconnect the rotary shaft and the rotary disk. Another object of the present invention is to provide an intermittent rotation device using an actuator with a new configuration that can smoothly transmit rotational force.

One aspect of the invention according to the above object is to provide a rotating cylinder in which a cylindrical rotating member with a limited rotation angle is inserted through the cylinder member, and a plunger of a piston provided in the upper part of the rotating cylinder, and a plunger of a piston as described above. a sliding cylinder positioned so that it can freely move in and out of the rotating member;
A spline is provided around the shaft, and the spline is fitted with a spline provided on the inner surface of the rotary member, and the rotary shaft is connected to the plunger and slidably housed within the rotary member. The actuator is provided at the center of the upper surface, a base rotatably supports a rotary disk on the lower surface, and a transmission cylinder is integrated in the center, and the above-mentioned The present invention provides an intermittent rotation device using an actuator consisting of a rotation shaft and the above-mentioned rotary disk provided with a fitting spline.

In an intermittent rotating device having such a configuration, the rotating member and the rotary disk are connected or disconnected by the rotating shaft that moves forward and backward in the axial direction by operating the sliding cylinder when the rotation is stopped. As a result, the rotating disk can be rotated by a predetermined angle only when the rotating member moves forward.

Another aspect of the present invention is a rotating cylinder in which a cylindrical rotating member with a limited rotation angle is inserted through the cylinder member, and a plunger of a piston provided on the upper part of the rotating cylinder. A sliding cylinder is positioned so as to be able to move in and out of the rotating member, and has a spline around the shaft, and the spline is engaged with a spline provided on the inner surface of the rotating member, and the cylinder is connected to the plunger and rotates. An actuator consisting of a rotary shaft slidably housed in a moving member, a base having a seat fixed to the actuator in the center of the upper surface, and a rotating disk rotatably supported on the lower surface, and the base. and the above-mentioned seat body,
A circular rotary plate with a positioning hole drilled in its plate surface has a conductive cylinder provided with a spline on its inner surface to fit with the rotating shaft at the upper center, and a conductive cylinder that is always fitted to the rotary plate at the lower center. The present invention provides an intermittent rotation device using an actuator comprising a positioning member having a mating connecting shaft protruding therefrom, and a positioning pin provided on the seat side so as to be able to move in and out of the positioning hole.

In such a configuration, the rotating member and the rotary disk can be connected through the positioning member, and thereby the rotating disk can be rotated together by a predetermined angle only when the rotating member moves forward, and the positioning member on the seat side By inserting the pin into the hole of the positioning member, it is possible to correct the positional shift of the rotary disk when it is stopped.

The present invention will be explained in detail below with reference to illustrated embodiments.

In the figure, 1 is a hydraulic actuator, and inside the rotation cylinder 2, a cylindrical rotation member 21 is installed.
It is provided through the upper and lower parts of the cylinder. On the side of this rotating member, there is a wing plate 23 that fits in an oil chamber for rotation that is limited to a certain angle range, for example, an oil chamber 11 that is limited to a 90 degree angle, as shown in FIG. As shown in FIG. 5, the rotating shaft 22 has a spline a around the shaft except for the upper part, and a spline b has a spline b on the inner surface of the lower part, as shown in FIG. It is fitted and housed so as to be slidable in the axial direction.

The cylinder 41 of the sliding cylinder 4 is attached to the upper part of the rotary cylinder 2 with a plunger 43 integral with an internal piston 42 facing downward, and the plunger 43 is connected to the above-mentioned cylinder through a joint at the tip. It is connected to the rotation shaft 22.

Reference numeral 8 denotes a base, and the actuator 1 is mounted on a pedestal 81 formed at the center of the upper surface, and a rotary disk 7 is rotatably provided on the lower surface supported by peripheral members. A transmission cylinder 9 is integrally provided through the center of the rotary disk 7. Further, the upper part of the transmission cylinder 9 is rotatably supported by a bearing 82 in a hole in the center of the board to receive the rotation shaft 22.
The upper inner surface has a spline c that fits with the spline a of the rotation shaft 22.

Reference numeral 10a denotes positioning holes drilled at 90 degree angles on the peripheral edge of the base plate, into which positioning pins 10b of the positioning cylinder 10 provided on the top surface of the base plate are inserted through the base plate 8.

Spline a of the rotating shaft 22 and other splines b and c that fit with spline a are formed on the circumferential surface.
It is preferable to provide angles of 15 degrees, and in this way, in connection with the rotary disk 7, the rotary disk 7 is 1/24, 1/12,
Intermittent movement of 1/6 and 1/4 rotation can be performed.

6 and 7 show other embodiments of the actuator. This actuator 1 has a pair of stoppers 5 on the top of the cylinder for limiting rotation.
5 is provided protrudingly, and arms 6, 6 attached to the exposed upper end of the rotating member 21 are moved between the stoppers 5, 5, so that the rotating member 21 can be moved until the arms touch the stopper. be.

In the intermittent rotation device, when the sliding cylinder 4 is actuated by hydraulic pressure and the plunger 43 moves forward in the stopped state shown in FIG. 1, the rotating shaft 22 protrudes from the rotating member 21 as shown in FIG. The splines a and c fit into each other. As a result, the rotating shaft 22, furthermore, the rotating member 21 and the rotary disk 7 are integrated in the circumferential direction.

Next, the positioning cylinder 10 is operated backward by hydraulic pressure or pneumatic pressure, and as shown in FIG. 2, the positioning pin 10b is pulled out from the positioning hole 10a.
When the rotation cylinder 2 is actuated by hydraulic pressure, the blade 2
3 moves 90 degrees within the oil chamber 11 together with the rotating member 21.

As a result, the rotating shaft 22 rotates together with the plunger 43, and the rotary disk 7 also rotates at 90° via the transmission cylinder 9.
Rotate only once. After stopping, when the positioning cylinder 10 is moved forward and the positioning pin 10b is inserted into the positioning hole 10a, the slight positional deviation of the rotary disk 7 is corrected. Various operations such as molding are performed at this stop position, and the rotating member 21 is also moved back in preparation for the next rotation.

To return the rotating member 21, the sliding cylinder 4 is operated backward to pull the rotating shaft 22 together with the plunger 43 back into the rotating member 21, and the rotating shaft 22 is extracted from the transmission cylinder 9. 21 and the turntable 7 are disconnected. As a result, the turntable 7
only remains in the stop position and the next rotation is made from that position. As a result, the rotary disk 7 continues to rotate while repeatedly stopping in one direction at a constant angle.

FIG. 8 shows a case in which a positioning member is connected to the actuator, and a spline 103 that fits with the rotation shaft 22 is installed in the upper center of a circular rotary plate 101 with a positioning hole 102 bored in the plate surface. A positioning member 100 having a transmission cylinder 104 provided on the side and a connecting shaft 105 protruding from the center lower part,
It is provided on the lower surface of the seat body 3 of the actuator 1 fixed to the center of the upper surface of the base 8. This positioning member 100 is rotatably provided by being supported by a bearing 106 of the transmission cylinder 104 located in a hole in the center of the seat body, and the connecting shaft 1
05 penetrates through the base plate 8 and is always fitted with the rotary disk 7.

A positioning cylinder 10 is attached to the seat body 3, and a positioning pin 10b passes through the seat body 3.
It enters and exits the positioning pin 102 of the rotating plate 101.

As described above, the present invention comprises a rotary cylinder 2 in which an actuator 1 is provided with a cylindrical rotary member 21 having a limited rotation angle inserted through the cylinder member, and a plunger provided on the upper part of the rotary cylinder 2. 43 is positioned in the rotating member so as to be able to move in and out, and has a spline a around the shaft,
The spline a is fitted with a spline b provided on the inner surface of the rotating member 21, and the rotating shaft 22 is connected to the plunger 43 and slidably housed within the rotating member, This actuator 1 is installed on a base 8 having a rotary disk 7 on the lower side, and a transmission cylinder 9 that fits with the rotation shaft 22 with a spline is provided on the rotary disk 7 side.
Through this transmission cylinder 9 and the rotating shaft 22, the rotating member side and the rotary disk side can be connected and disconnected, and only the forward motion of the rotating member is transmitted to the rotating disk. This eliminates the need for installation space for an intermittent rotation mechanism or the like on the rotary disk side, and the diameter of the rotary disk can be reduced by that amount, thereby reducing weight. In addition, since the actuator only needs to be installed on the board, assembly is not time consuming, and the rotating plate can be rotated intermittently by simply operating the sliding cylinder and rotating cylinder alternately. It is easy to operate and rarely breaks down.

Further, a positioning member 100 having a circular rotary plate 101 having a positioning hole 102 is interposed between the actuator 1 and the rotary plate 7, and the actuator 1 side and the rotary plate 7 side are connected via the positioning member 100. In this case, there is no need to provide a transmission cylinder on the rotary disk side, and it is only necessary to fit the connecting shaft protruding from the positioning member to the rotary disk, which further simplifies the connecting part of the rotary disk, and Since there is no need to drill positioning holes on the rotary disk side, the rotary disk can be manufactured easily and the device can be further downsized, among other advantages.

[Brief explanation of drawings]

The drawings show an embodiment of an intermittent rotation device using an actuator according to the present invention, in which Fig. 1 is a longitudinal cross-sectional view when stopped, Fig. 2 is a longitudinal cross-sectional view during rotation, and Fig. 3 is a longitudinal cross-section of the actuator. Fig. 4 is a cross-sectional view of the rotating cylinder portion of the actuator;
6 is a longitudinal sectional view of an actuator according to another embodiment, FIG. 7 is a partial cross-sectional plan view thereof, and FIG. FIG. 8 is a longitudinal sectional view of an intermittent rotation device according to another embodiment.

Claims (1)

[Scope of Claims] 1 A rotating cylinder in which a cylindrical rotating member with a limited rotation angle is inserted through the cylinder member; A sliding cylinder is positioned so as to be able to move in and out of the member, has a spline around the shaft, and the spline is fitted with a spline provided on the inner surface of the rotating member, and is connected to the plunger and inserted into the rotating member. It has an actuator consisting of a rotating shaft slidably housed in the base, the actuator is provided at the center of the upper surface, a base rotatably supports the rotary disk on the lower surface, and a transmission cylinder is integrated in the center. An intermittent rotation device using an actuator, characterized in that the rotary disk is provided with a spline fitted to the rotation shaft on the inner surface of the upper part of the transmission cylinder. 2. A rotating cylinder in which a cylindrical rotating member with a limited rotation angle is inserted through the cylinder member, and a plunger of a piston provided on the upper part of the rotating cylinder so as to be able to move in and out of the rotating member. The sliding cylinder has a spline around the shaft, and the spline is engaged with a spline provided on the inner surface of the rotating member, and is connected to the plunger and slidably accommodated in the rotating member. an actuator consisting of a rotary shaft, a base having a seat fixed to the actuator at the center of the upper surface, a rotary disk rotatably supported on the lower surface, and a base interposed between the base and the seat. At the upper center of the circular rotary plate with a positioning hole drilled in the plate surface, there is a transmission cylinder with a spline on the inner surface that fits with the rotation shaft, and at the lower center there is a transmission cylinder with a spline that fits with the rotation shaft. An intermittent rotation device using an actuator, comprising a positioning member having a protruding connecting shaft that is always fitted thereto, and a positioning pin provided on the seat side so as to be able to move in and out of the positioning hole.