JPH0716083Y2 - Compound actuator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a compound actuator that causes a piston rod of a cylinder type actuator to perform a combined motion of linear reciprocating motion and rotational swing.

[Prior Art] A composite actuator that uses a piston of a cylinder type actuator as an oscillating actuator to cause a piston rod to perform a combined motion of linear reciprocating motion of the cylinder type actuator and rotational oscillating motion of the oscillating type actuator is already known. (See, for example, Japanese Examined Patent Publication No. 47-46311).

However, since the known composite actuator uses the swing actuator itself as the piston of the cylinder actuator, many types of swing actuators corresponding to the diameter of the cylinder actuator are required. It is difficult to manage parts.

[Problems to be Solved by the Invention] An object of the present invention is to provide an inexpensive composite actuator that can use an existing oscillating actuator.

[Means for Solving the Problems] In order to achieve the above object, a compound actuator of the present invention comprises a cylinder type actuator and a swing actuator, and a piston rod of the cylinder type actuator is provided with a linear reciprocating motion of the cylinder type actuator. In a composite actuator that performs a combined motion of rotation and rocking of a rocking type actuator, the piston of the cylinder type actuator is configured by assembling the rocking type actuator between piston members on both sides in the axial direction. , A plurality of slits provided in the axial direction, one end of which individually communicates with the oscillating actuator and the pressure chamber of the oscillating actuator, and the other end of which has a plurality of port bushes for supplying / discharging pressure fluid. It is characterized by installing.

[Operation] Since the piston of the cylinder type actuator has the swing type actuator assembled between the piston members on both sides in the axial direction, the diameter of the swing type actuator is not restricted by the diameter of the cylinder type actuator. Oscillating actuators can be used.

Therefore, since it is not necessary to prepare a large number of types of oscillating actuators, component management is easy and the composite actuator can be made inexpensive.

In addition, by installing a port bush for supplying and discharging pressure fluid to the oscillating actuator through the axial slit provided in the cylinder actuator, the port bush acts as a rotation stopper for the piston. It is not necessary to provide a separate member for

[Embodiment] FIG. 1 and FIG. 2 show an embodiment of the present invention, and this composite actuator comprises a cylinder type actuator 1 and a swing type actuator 2.

The cylinder type actuator 1 is provided with a cylinder tube 4, a head cover 5 and a rod cover 6 attached to both ends of the cylinder tube 4 by appropriate means, and slits 7, 7 are formed in the cylinder tube 4 in the axial direction. In 5,6,
Ports 12 and 12 (only one of which is shown) for supplying and discharging the pressure fluid are opened in the pressure chambers 10 and 11 defined by the piston 9.
Therefore, the piston 9 and the piston rod 13 linearly reciprocate by the compressed air supplied to and discharged from the pressure chambers 10 and 11.

The piston 9 includes a pair of piston members 15 and 16 having sliding portions 15a and 16a for sliding the cylinder tube 4, and the mounting portions 15b and 16b facing each other of the piston members 15 and 16,
Attach the body 2a of the swing actuator 2 to the bolts 17 ,.
It is configured as assembled by. Therefore, since the diameter of the body 2a of the swing actuator 2 is not restricted by the diameter of the cylinder tube 4, it is not necessary to prepare many types of swing actuators, and the existing swing actuator can be used.

The port bushes 19 and 19 for supplying and discharging the pressure fluid to and from the pressure chamber (not shown) of the oscillating actuator 2 have slits 7 and 7.
It is attached to the body 2a of the oscillating actuator 2 through this, and thereby the piston 9 and the cylinder tube 4 are prevented from rotating relative to each other.

The through hole 20 penetrating the piston member 16 has a mounting portion 16b.
The thrust bearing 21 is attached to the expanded portion, and the tip of the piston rod 13 loosely inserted in the through hole 20 and one end of the rotary swing shaft 22 of the swing actuator 2 are
It is connected by a coupling screw 23 so as to be integrally rotatable and integrally reciprocable.

In the above embodiment, when compressed air is supplied to and discharged from the pressure chambers 10 and 11 of the cylinder type actuator 1 through the ports 12 and 12, the piston 9 and the piston rod 13 reciprocate. In this case, of course, the slits 7, 7 are sealed from the pressure chambers 10, 11 by the sliding portions 15a, 16a.

In addition, when compressed air in the pressure chamber of the oscillating actuator 2 is supplied and discharged from the port bushes 19, 19, the piston rod 13
Rotates and swings. In this case, the rotation of the piston 9 is prevented by the port bushes 19, 19 contacting the side walls of the slits 7, 7.

The oscillating actuator in each of the above embodiments is
Although both are vane type, the swing type actuator of the present invention is not limited to the vane type, and other swing type actuators such as a rack and pinion type may be used.

[Advantages of the Invention] The compound actuator of the present invention has the piston of the cylinder-type actuator assembled by assembling the piston members on both sides in the axial direction and the rocking-type actuator between these members. Since the actuator can be used as it is, component management is easy and the composite actuator can be inexpensive.

Further, since the relative rotation of the cylinder and the piston is prevented by the slit of the cylinder and the port bush, it is not necessary to provide a separate member for preventing rotation.

[Brief description of drawings]

FIG. 1 is a vertical front view of an embodiment of the present invention with a part omitted.
FIG. 2 is a plan view of the main part of the same. 1 ... Cylinder type actuator, 2 ... Oscillating type actuator, 4 ... Cylinder tube, 7 ... Slit,
9 ... Piston, 13 ... Piston rod, 15,16 ... Piston member, 19 ... Port bush.

Claims (1)

[Scope of utility model registration request] 1. A compound actuator comprising a cylinder type actuator and an oscillating type actuator, wherein a piston rod of the cylinder type actuator makes a combined motion of linear reciprocating movement of the cylinder type actuator and rotational oscillation of the oscillating type actuator. In the piston of the cylinder type actuator, the swing type actuator is assembled between piston members on both sides in the axial direction, the cylinder is provided with a plurality of slits in the axial direction, and the swing type actuator is A composite actuator, wherein one end is individually communicated with the pressure chamber of the oscillating actuator, and the other end is provided with a plurality of port bushes for supplying and discharging pressure fluid passing through the slit.