JPS6319746B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pneumatic intermittent rotation device, and in particular to a unitized device that is compact and lightweight.

Conventional intermittent rotation devices have mainly been electric cam systems such as Geneva cams and barrel cams, but these are expensive, require a highly accurate configuration, are limited to one direction of rotation, and have limited speed. It has drawbacks such as not being easy to adjust, and especially in small types, the cam shape cannot be made large, which limits the weight of the table. In the pneumatic type, as shown in FIG.
a and 33b, but this method requires an oversized structure due to the protrusion of the cylinder 30, and requires indexing from the outside because it cannot be locked when stopped. The disadvantages were that the claws were subject to severe wear, and like the electric type, the direction of rotation was limited.

The present invention solves the problems of the conventional example, such as high cost, high precision configuration, restrictions on rotation direction, difficulty in speed adjustment, restrictions on table weight, and excessive table weight. The object of the present invention is to provide a compact intermittent rotation device that is inexpensive and has heavy weight, by solving problems such as its structure and the fact that the indexing lock can only be accessed from the outside.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 10.

Figures 1, 2, and 3 show the overall configuration, and 1
is the main body frame.

Reference numeral 2 denotes a rotary disk that is rotatably attached to the main body frame 1 and rotates intermittently.

3a and 3b are pneumatic ports for driving the rotary disk 2.

Reference numerals 5a and 5b are operation confirmation detectors necessary for rotating the rotary disk, and reference numerals 6a and 6b are elevation movement detectors for the index regulating pin 19.

Next, a detailed explanation will be given from FIG. 4 onwards.

At the tips of each of the rotary drive cylinder tubes 7a and 7b attached from the left and right sides of the main body frame 1,
Stoppers 8a and 8b are attached.

The rotation angle is determined by the pistons 9 built into the cylinder tubes 7a, 7b coming into contact with the stoppers 8a, 8b.

A rack 10 is attached to this piston 9. Furthermore, bearings 24 and 25 are installed at the upper and lower ends to allow rotation.
A slider clutch 13 is rotatably and slidably supported via a bearing 12 on the intermediate outer periphery of the main shaft 11 held by the main shaft 11, and the piston 9 is connected to a pinion 14 fixed to the slider clutch 13. They mesh together.

Reference numeral 15 denotes a clutch fixed to the main shaft 11, which serves as a drive transmission means that engages when the slider clutch 13 descends and separates when it rises. (See FIG. 8) One end of the lift lever 16 is rotatably supported via a pin 17, and the other end slides on both ends of the guide 18 to raise and lower the indexing pin 19. The base 20 and the pin 21 are connected to each other, and the intermediate portion of the lift lever 16 is connected to the slider clutch 13 so as to be able to rise and fall freely. The piston rod 22 is configured to be moved up and down by air pressure to an index regulating cylinder body 23 mounted within the main body frame 1, and its tip is fastened to the index regulating pin 19 by the piston rod 22.

The operation in the above configuration will be explained.

The case of counterclockwise rotation will be explained. Figure 1,
After confirming the descending state of the index regulation pin 9 shown in FIG. 4, that is, the index regulation release signal 6b, the position detection signal 5a of the index rotation cylinder shown in FIGS. 2 and 8 is confirmed.
When air is supplied to the pneumatic port 3a attached to the cylinder tube 7a, the built-in piston 9 moves, and the rack 10 attached to the piston 9 moves toward the main shaft 11. The pinion 14 on the outer periphery of the motor is rotated.

Pinion 14 and fixed slider clutch 13
is lowered and engaged with the fixed clutch 15, so rotation is transmitted and rotates the rotary disk 2 together with the main shaft 11. The index rotation is determined by a stopper 8b at the limit of movement. Furthermore, the stopper 8b is configured to be adjustable. When a detector 5b is installed at the moving end determined by the stopper 8b to detect the position, air is then supplied from the index regulating cylinder pneumatic port 4b which is passed through the main body frame 1 shown in FIG. The piston rod 22 rises, and the index regulating pin 19, which is fastened to the piston rod 22, rises. Furthermore, a base 20 that holds the indexing regulation pin in its vertical movement is interposed between the pin 21 and connected to the indexing regulation pin 19, and by the movement of the piston rod 22, the base 20 is guided as well as the indexing regulation pin 19. Slide on both ends of 18 and rise. Further, the elevating lever 16 fixed to the base 20 is simultaneously pushed up via the fulcrum pin 17. As the lift lever 16 is pushed up, the slider clutch 13, which is slidably attached to the outer circumference of the main shaft 11, moves the lift lever 16 upward.
The slider clutch 13 is pushed up through the roller 27 attached to the intermediate portion of the clutch 15, and is separated from the fixed clutch 15, and the indexing pin 19 is inserted into the indexing table 26 to adjust its position. is completely free. At that point, a confirmation signal is taken using the detector 6a. Next, the index table 26 is placed in a state where the position is still regulated.
Air is supplied to the pneumatic port 3b of the index rotation cylinder, the piston 9 moves again, and the rack 10 attached to the piston 9 moves the pinion 14 fixed to the slider clutch 13 on the outer periphery of the main shaft 11. Rotate and return to the starting position.

During this process, the slider clutch 13 and fixed clutch 15 are separated and the slider clutch 13 is free, so it idles on the outer periphery of the main shaft 11 via the bearing 12 and has no effect on the rotary disk 2. I won't give it.

When the confirmation signal 5a returns to the predetermined position, the pneumatic port port 4a on the index regulating cylinder body 23
Air is supplied to the index pin 19, which has been inserted into the index table 26 and positioned, and is released from its regulation by lowering, and the slider clutch 13 is also lowered, contrary to when it was raised, and the fixed clutch 1
5, and when the lowering is confirmed by the detector, one cycle is completed. The above cycle is shown in the timing diagram of FIG. In the figure, A represents forward movement and B represents backward movement. In the case of clockwise rotation, all you have to do is change the air supply port at the start, and the speed can also be determined by adjusting the speed controller.

As is clear from the above description, the pneumatic intermittent rotation device of the present invention has a pinion 14 attached to the main shaft 11a provided with a slider clutch portion and a fixed clutch portion, and an indexing rotation device incorporating a piston with a clutch that meshes with the pinion 14. Insert the cylinder and the clutch part.
An indexing regulation pin that goes up and down with the lever that turns it off,
It is composed of a cylinder for index regulation, which is the driving body, and is lightweight and compact in shape.
It is also heavy-resistant, and not only can the directional speed be determined freely, but it also locks when stopped.
It has the feature that indexing accuracy can be easily achieved.

Therefore, it can be easily incorporated into an automation system as a unit, and is inexpensive and has great effects.

[Brief explanation of the drawing]

Fig. 1 is a front view of a pneumatic intermittent rotation device according to an embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a side view of the same, and Fig. 4 is a state in which the clutch is inserted and before indexing 5 is the same sectional view after the clutch has been disengaged and the index position has been determined, FIG. 6 is a partial sectional view of the regulating cylinder of the device, FIG. 7 is the same partial plan view, and FIG.
The figure is a cross-sectional view of the same device seen from the plane, FIG. 9 is a cross-sectional view of the same device seen from the side, FIG. 10 is a timing diagram of the same device, and FIG. 11 is a conventional pneumatic intermittent rotation device. FIG. 9... Piston, 14... Pinion, 13...
Slider clutch, 15...Fixed clutch, 1
9... Index regulation pin, 22... Cylinder rod, 23... Cylinder body for index regulation.

Claims (1)

[Claims] 1. A turntable that is rotatably provided, a main shaft fixed at the center of the turntable, an indexing table fixed to the main shaft and having holes at predetermined intervals around the circumference, and holes in the indexing table. a fixed clutch fixed to the main shaft; a slider clutch slidable and rotatable via the main shaft and a bearing; A piston, a rack provided in the sliding direction of the piston, a pinion fixed to the slider clutch and meshed with the rack, and the indexing regulating pin inserted into a hole in the indexing table and fixed. An intermittent rotation device consisting of a clutch and a drive source for disengaging the slider clutch.