JPS6354942B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a swing device that swings a rotating shaft within a predetermined swing angle range using a rotary actuator.

FIG. 1 is a diagram illustrating a conventional turning device.
In this example, the turning device 1' sends out the products 3' alternately to the left and right by turning a blade 2' fixed to a rotating shaft at a predetermined angle. These swivel devices 1' are normally driven pneumatically or hydraulically.

FIG. 2 is a diagram illustrating the operating principle of a conventional swing device. The blades 5' are integrally fixed to the rotating shaft 7', and the blades 5' slideably rotate within the body 6 about the rotating shaft 7'. When this vane 5' comes into contact with the shoe 4' which acts as a stopper, the pivoting device stops the pivoting of the rotating shaft 7'. Now, to explain this turning device as being operated by air pressure, first, when air enters from port A, the blade 5' is pushed and the rotating shaft 7' is rotated. At this time, the air in the opposite chamber in the body 6' is discharged from port B, and the rotating shaft 7' rotates clockwise and stops when the blade 5' hits the shoe 4'. On the other hand, when air is introduced from port B, the blades 5' rotate counterclockwise, contrary to the above. As described above, the conventional turning device has the drawback that the turning angle range of the blade 5' is fixedly determined by the positions of the two shoes 4', and the turning angle range cannot be adjusted. Therefore, the blade 2' rotates at a fixed angle.
In this case, it was not possible to catch the product 3 that was being conveyed on the conveyor in a biased manner to the left and right.

The present invention has been made in view of the above circumstances, and its purpose is to provide an airtight, leak-free and efficient system that can easily and accurately variably adjust the desired turning angle of the rotating shaft, and that is compactly designed to save space. The purpose is to provide a good turning device.

Hereinafter, details of the present invention will be explained based on illustrated embodiments.

3 to 6 are a partially sectional front view, a bottom view, a sectional view, and a side view, respectively, of an embodiment of the swing device according to the present invention.

The turning device of the present invention includes a casing 10, a pair of cylinders 11 and 11' which are slidably arranged opposite to each other in the casing 10 at appropriate intervals, air inlets 12 and 12', and pistons 13 and 13'. A pair of cylinder heads 15, 15' are airtightly connected to the cylinders 11, 11' and are provided with cushion chambers 14, 14' for applying pressure, and pistons 13, 13' are provided at both ends to act on the pistons 13, 13. cylinder 11,1 with a predetermined stroke due to the pressure
Rack 16 that reciprocates within 1' and Rack 16
A pinion 18 meshes with the pinion 18 and rotates in accordance with the reciprocating motion thereof, and rotates the rotating shaft 17 fixed integrally within a predetermined rotation angle range, and a pinion 18 fixed to each cylinder head 15, 15' at appropriate intervals. A pair of adjusting screw fittings 19, 19' slidably arranged opposite to each other on the casing 10, and adjusting screw fittings 19, 1.
9′ of the casing, that is, the casing protrusion 2
0, 20' through the adjusting screw fittings 19, 1
Adjustment screw 21 formed by connecting 9' and adjustment screw 2
1 and the casing protrusion 20,
20'.

The casing 10 includes a mounting surface portion 10a having mounting holes 23 formed therein, a pair of cylinders 11,
Projections 20, 20' are formed which extend from the cover part 11' over the rack 16 and pinion 18 and extend between the cover part 10b and the adjustment screw fittings 19, 19'. In particular, the cover portion 10b in the cylinders 11, 11' is
It extends in the direction in which the cylinders 11, 11' are formed and serves as a guide for the cylinders 11, 11' which move in the axial direction. In addition, the casing protrusions 20, 20'
is formed to hold the rotation knob 22, and has a groove 20a through which the adjustment screw 21 is inserted.

The cylinders 11 and 11' are arranged in a casing 10 so as to slide and guide the pistons 13 and 13', respectively.
One end thereof is fixed to each cylinder head 15, 15' in order to move axially within the casing 10.

The cylinder heads 15, 15' are each tightened with bolts 24 at each end of the cylinders 11, 11'.
air inlets 12, 12' are provided on their upper surfaces, respectively.
Passages 7a, 7 extend from 2' to cushion chambers 14, 14' into which piston protrusions 13a, 13a' fit.
a′ is formed. Also, each cylinder head 1
Adjustment screw fittings 19 are fixed to the side surfaces of 5 and 15' with fixing bolts 25.

The rack 16 is mounted on the pistons 13, 13' and meshes with a pinion 18 which is perpendicular to the rack 16.

The pinion 18 has a rotating shaft 17 at its axis, and a bearing 2 fitted in the casing 10.
The shaft is mounted between 6 and 27.

The adjusting screw fittings 19, 19' each have one end fixed to the cylinder head 15, the other end fixed to the casing 10, and are connected to each other via an adjusting screw 21 inserted into the other ends. Furthermore, elongated holes 28 and 28' are formed in the bottom surfaces of the adjustment screw fittings 19 and 19' in the figure, so that they can be slid and adjusted relative to the casing 10 via adjustment bolts 29.

The adjustment screw 21 is the adjustment screw fitting 19, 19'.
It is inserted and fixed between them, inserted into the groove 20a of the pair of casing protrusions 20, 20', and screwed into the rotation knob 22.

The rotary knob 22 is screwed into the adjusting screw 21 and held by the casing protrusions 20, 20'.

According to the present invention described above, when air is supplied from the outside to the air inlet 12' of the cylinder head 15' in FIG.
6 to the left as shown. The left piston 13 moves on the rack 16 until it abuts against the cylinder head 15, and the pinion 18 meshing with the rack 16 is rotated by the amount of movement. Then, as shown in the conventional example, an operating section such as a blade is rotated through the rotating shaft 17 of the pinion 18 to perform the desired work.

Incidentally, the rotation angle at which the pinion 18 rotates is determined by the amount of movement of the rack 16, and the amount of movement of the rack 16 is determined by the position at which the piston 13 abuts against the cylinder head 15. Therefore, when moving the cylinder head 15, before supplying air pressure into the cushion chamber 14, the adjustment bolts 29, 29' on the bottom of the adjustment screw fitting 19 are loosened in advance, and the rotation knob 22 is turned. When the adjustment screw fitting 19 moves to the left or right by turning the rotation knob 22, the cylinder head 15 and the cylinder 11 are also moved together, so that the piston contact surface with the cylinder head 15 change the position of After that, the adjustment bolt 29,
29' to fix the adjusting screw fitting 19 to the casing 10. Then, the other air inlet 1
Air is supplied from 2' to increase the pressure in the cushion chamber 14', and the rack 16 is moved with the changed stroke to change the rotation angle of the pinion 18 and rotating shaft 17. That is, by adjusting the rotation of only the rotation knob 22, the rotation of the rotation shaft 17 can be obtained in proportion to the rotation angle thereof. In addition, the pistons 13, 13'
Since the cylinders 11, 11' are moved integrally with the cylinder heads 15, 15', the airtightness of each cushion chamber 14, 14' is maintained, and the entire apparatus is made more compact.

As explained above, the present invention includes a casing,
a pair of cylinders slidably disposed opposite each other in a casing at appropriate intervals; a pair of cylinder heads airtightly coupled to the cylinders, each having an air inlet and a cushion chamber for applying pressure to the piston; A rack having pistons at both ends and reciprocating within the cylinder at a predetermined stroke due to the pressure acting on the piston, and a rotating shaft that meshes with the rack and rotates in response to the reciprocating movement and is fixed integrally. A pinion that is rotated within a predetermined rotation angle range, a pair of adjusting screw fittings fixed to each of the cylinder heads and slidably facing each other on the casing at appropriate intervals, and a casing facing between the adjusting screw fittings. It consists of an adjusting screw that connects the adjusting screw fittings through the adjusting screw, and a turning knob that is screwed into the adjusting screw and held by the casing, so that the desired turning angle of the rotating shaft can be easily and easily adjusted. Accurate variable adjustment is possible, and it can be designed to be structurally compact, so it does not require much installation space and does not get in the way of work, making it possible to save space.Moreover, the structure is highly efficient with no airtight leakage.

[Brief explanation of drawings]

FIG. 1 is a perspective view illustrating the outline of a conventional swing device, FIGS. 2 a and b are explanatory diagrams illustrating the operating principle of the conventional swing device, and FIGS. 3 to 6 are a swing device according to the present invention. 3 is a partially sectional front view, FIG. 4 is a bottom view of FIG. 3, FIG. 5 is a sectional view taken along line A-A of FIG. 3, and FIG. FIG. 3 is a right side view of the figure. 10...Casing, 11...Cylinder, 1
2, 12'...Air inlet, 13, 13'...Piston, 14, 14'...Cushion chamber, 15,
15'...Cylinder head, 16...Rack, 1
7... Rotating shaft, 18... Pinion, 19, 19'
... Adjustment screw fitting, 20, 20' ... Casing protrusion, 21 ... Adjustment screw, 22 ... Rotation knob,
23...Mounting hole, 24...Tightening bolt, 25...
...fixing bolt, 26...bearing, 27...bearing, 2
8...Long hole, 29...Adjustment bolt.

Claims (1)

[Claims] 1. A casing, a pair of cylinders slidably arranged opposite each other within the casing at appropriate intervals,
A pair of cylinder heads are air-tightly connected to the cylinder and include an air inlet and a cushion chamber that applies pressure to the piston, and pistons are provided at both ends, and the pressure applied to the piston moves the inside of the cylinder in a predetermined stroke. A rack that moves reciprocally; a pinion that meshes with the rack and rotates in response to the reciprocating motion, and rotates an integrally fixed rotating shaft within a predetermined rotation angle range; and a pinion that is fixed to each of the cylinder heads and rotates as appropriate a pair of adjusting screw fittings arranged oppositely and slidable on the casing at a distance of a certain distance; an adjusting screw formed by connecting the adjusting screw fittings through a casing facing between the adjusting screw fittings; A rotating device comprising a rotating knob that is screwed together and held by a casing of the rotating knob.