JPH0740086Y2 - Slide actuator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a slide actuator that can freely combine a plurality of slide actuators.

[Prior art and its problems]

As a prior art of the present invention, there is JP-A-58-102810. FIG. 3 of this publication shows a combination of two cylinders as a unit cylinder. Each cylinder forms a bearing portion, which is separate from the cylinder, in parallel with the piston rod, and a guide shaft guided by the bearing portion is provided. Further, the tip end portions of the piston rod and the guide shaft are connected by a connecting plate. Then, the piston rod and the guide shaft are coupled to each other and moved to prevent the piston rod from rotating.

In the two cylinders thus configured, the connecting plate of one cylinder is fastened and fixed to the case body of the other cylinder by bolts.

The unit cylinder configured as described above has the following problems.

That is, since the cylinder has the guide shaft, the case bodies cannot be assembled with each other, and only the connection plate and the other case body can be assembled. Therefore, since the cylinder connected to the connecting plate is only supported by the piston rod and the guide shaft,
There is a possibility that the positioning movement of the chuck at the tip of the piston rod of the coupled cylinder may become unstable, and it is difficult to use it for precision assembly equipment such as electronic parts. Also, since the two cylinders can be combined only in the T type, the degree of freedom in combination can be made extremely small and
By having a shape-combining structure and a guide shaft, the whole becomes large and the installation place is limited. Furthermore, when two or more cylinders are assembled, the degree of freedom of positioning of the chuck attached to the tip of the piston rod of the combined cylinder is further deteriorated, so that the assembly of two or more cylinders becomes difficult to use as a device.

Further, since the guide shaft of the cylinder projects to the rear end, the mounting structure of the first cylinder to the device is limited.

The present invention has been made to solve the above-described problems, and an object of the present invention is to connect two rigid bodies of a slide actuator to each other so as to provide a strong connection and at least two slides. The actuator can be assembled, and further, the degree of freedom of position of the chuck or the like attached to the tip of the piston rod is increased and the positioning accuracy is ensured.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention has a cylinder chamber inside and one slide body having a dovetail groove extending on the outer surface in the axial direction of the cylinder chamber; A movable piston in a state of being divided into two, a rod connected to the piston and having both ends protruding from the one slide body, a fixed block connected to both ends of the rod, and the one slide body. A linear bearing for mounting the rod so as to be movable only in the axial direction, a fixing member provided in close contact with an outer surface of the one slide body, and a dovetail groove of the one slide body. It has a female screw that is movably mounted and a male screw that can be screwed into the female screw, and the fixing member is formed by their cooperation. A tightening member for fixing the serial one slide body, together with the provided in close contact with the outer surface of the one slide body has a cylinder chamber therein,
Also, the other slide body having a dovetail groove extending on the outer surface in the axial direction of the cylinder chamber, a piston that is mounted in the cylinder chamber, and is movable in a state where the cylinder chamber is divided into two, and is connected to the piston. Along with
A rod whose both ends project from the other slide body,
A fixed block connected to both ends of the rod, a linear bearing mounted on the other slide body and movably supporting the rod only in the axial direction, and moved into a dovetail groove of the other slide body. And a tightening member for fixing the other slide body to the fixing member by cooperating with each other. is there.

[Action]

According to the present invention, by adopting the above-mentioned means, one or both of the fixed blocks connected to both ends of the rod on the one slide body side are attached to the mounting base of the device, and the working fluid is attached to the one slide body. When one of the slide bodies is moved relative to the rod in the axial direction, the other slide body fixed to the one slide body via the fixing member and the tightening member becomes one slide body. Move together. When the working fluid is applied to the other slide body, the rod on the other slide body side moves relative to the other slide body in the axial direction,
A chuck or the like attached to the fixed blocks connected to both ends of the rod moves to a predetermined position. The other slide body is fixed to a fixing member fixed to the one slide body via a tightening member, and in this case, the female screw of the tightening member is movable in the dovetail groove of the one slide body. Therefore, by loosening the tightening member, the fixing position of the other slide body to the one slide body can be changed.

〔Example〕

 An embodiment of the present invention shown in the drawings will be described below.

1 to 4 show a slide actuator according to the present invention, and FIG. 1 is a schematic perspective view showing the whole.
2 is a schematic sectional view showing an internal structure, FIG. 3 is a schematic sectional view showing a connected state of a slide actuator and a fixing member, and FIG. 4 is a schematic perspective view showing a connected state of two slide actuators. is there.

That is, the slide actuator shown in FIGS. 1 to 4 has a slide body 1 having a through hole 7 therein, a rod 2 arranged to be retractable by a working fluid from the slide body 1, and a rod 2 of the rod 2. It is composed of fixed blocks 3 and 3 connected to both ends.

At both ends of the through hole 7 of the slide body 1, linear bearings 4 and 4 are fitted inside and holders 5 and 5 are fitted outside, respectively, and a cylinder chamber 6 is formed inside them. . Further, on the outer surface of the slide main body 1, there are provided a plurality of dovetail grooves 10, 10, ... For mounting the slide actuator, which extend in the protruding / retracting direction of the rod 2.

Further, both ends of the rod 2 arranged so as to be retractable from the through hole 7 of the slide body 1 project outward from the through hole 7, and the fixing blocks 3 and 3 are respectively provided at the projecting portions. It is connected.

Further, a plurality of axially extending rounded grooves 2a, 2a, ... Are bored on the outer peripheral surface of the rod 2, and the linear bearings 4, 4 are formed in the rounded grooves 2a, 2a ,. Rolling prevents the rod 2 from rotating when it appears and disappears.

Further, a piston 8 is provided at a central portion of the rod 2, that is, a portion located inside the cylinder chamber 6 of the slide body 1, and the piston 8 slides in the cylinder chamber 6 by a working fluid. Thus, the rod 2 is adapted to be projected and retracted from the slide body.

When the slide actuator configured as described above is used for transportation of an assembly robot which requires reciprocating motion in one direction or reciprocating motion in two directions, for example, one or two The slide actuator is used by attaching it to a device (not shown) using a fixing member or the like. In that case, the slide actuator is connected to a device (not shown) using the fixing member 9 as shown in the cross section in FIG. It will be.

That is, the dovetail groove 10 provided on the outer surface of the slide body 1
A female screw 11 is movably disposed inside, and a fixing member 9 is provided so as to face the outer surface having the dovetail groove 10. The male screw 12 penetrating the fixing member 9 and the female thread inside the dovetail groove 10 are provided. The slide actuator is reciprocally provided by connecting the slide body 1 and the fixing member 9 by screwing the screws 11, and further by connecting the fixing member 9 to a device (not shown). It will be.

In this case, by loosening the male screw 12 penetrating the fixing member 9, the connection position between the fixing member 9 and the slide body 1 can be freely changed within the range of the dovetail groove 10 of the slide body 1, and the connection position can be changed. It will also be possible to fine-tune.

When two slide actuators are used in combination as shown in FIG. 4, first, the dovetail grooves 14 and 14 provided on both side surfaces of the slide body 13 of the first slide actuator A facing each other. The female screws 15 and 15 are movably disposed inside, and fixing members 16 and 16 are provided so as to face both side surfaces thereof, and the male screws 17 and 17 penetrating the fixing members 16 and 16 are provided with the dovetail groove. The slide body 13 is fixed by the fixing members 16 and 16 from both side surfaces by screwing the female screws 15 and 15 inside the screws 14 and 14, respectively.

Next, the first slide actuator A having both side surfaces of the slide body 13 fixed by the fixing members 16 and 16 is combined with the second slide actuator B so as to form a cross.

At this time, male screws 19 and 19 penetrating in the direction of the dovetail groove 18 of the second slide actuator B are provided in the fixing members 16 and 16 which fix the first slide actuator A from both sides, and the male screw 19 is also provided. , 19 are movably provided in the dovetail grooves 18, 18 of the second slide actuator B, and the male threads 19, 19 and the female threads 20, 20 in the dovetail grooves 18, 18 are screwed together. By combining them, the first slide actuator A and the second slide actuator B can be connected in a cross shape using the fixing members 16 and 16.

In this case, the male screws connecting the fixing members 16 and 16, the slide body 13 of the first slide actuator A and the slide body 21 of the second slide actuator B, respectively.
By loosening 17 and 19, the connection position between the first slide actuator A and the second slide actuator B can be changed and the connection position can be finely adjusted, so that it can be attached to a device (not shown) or the like. ,
It becomes possible to change the mounting position and finely adjust the mounting position.

Therefore, it is no longer necessary to fully consider the slide actuator connection position at the design stage as in the past.
Further, since it is not necessary to process the dovetail groove provided on the outer surface of the slide body with high precision, the manufacture is simplified and a versatile slide actuator can be obtained.

Furthermore, when two slide actuators are used in combination as in the conventional one, there is no need to connect them via a fixing member or the like, so the total thickness does not increase, and As a result, a compact slide actuator can be obtained.

Needless to say, the shape of the dovetail groove provided on the outer surface of the slide body may be T-shaped, V-shaped, or I-shaped, and the present invention is not limited to this, and the tightening member is movably arranged. It goes without saying that the shape can be set.

Further, when the first slide actuator is attached to the device, one fixed block is attached to the device, but when a strong force acts on the second slide actuator, both fixed blocks may be attached to the device.

Further, the dovetail groove of the slide body of each slide actuator may be used for fixing a switch or the like.

The tightening member shown in the present invention is a member having means for tightening the members.

[Effect of device]

The present invention has the following effects by being configured as described above.

That is, each rod mounted on each slide body is supported by a linear bearing, is relatively movable only in the axial direction with respect to each slide body, and is prevented from rotating. Therefore, it is possible to prevent the size from becoming large in the circumferential direction and the axial direction by providing the guide shaft as in the above-described related art.

As a result, one or both of the slide actuators can be attached to the attachment portion of the device by one or both of the fixing blocks provided at both ends of the rod of the one slide body, and the other slide body is closely attached to the one slide body. In this state, since it is fixed to the fixing member fixed to one of the slide bodies by the tightening member, the slide bodies having high rigidity come into close contact with each other.

Therefore, two or more slide actuators can be combined without increasing the size of the whole, and even if two or more slide actuators are combined, the coupling portion can be made strong and the whole structure can be improved. It is possible to increase the rigidity and to maintain high positioning accuracy of the chuck or the like of the device mounted on the other fixed block on the slide body side.

The other slide body is fixed to the fixing member fixed to the one slide body via the tightening member, and the female screw of the tightening member can move in the dovetail groove of the one slide body. Therefore, by loosening the tightening member, the position of the other slide body with respect to one slide body can be changed.

Therefore, the mounting position of the other slide body to the one slide body can be easily changed according to the application, and the versatility can be enhanced.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an entire slide actuator according to the present invention, FIG. 2 is a schematic sectional view showing an internal structure of the slide actuator according to the present invention, and FIG. 3 shows a connection state between a slide actuator and a fixing member. FIG. 4 is a schematic cross-sectional view showing a state in which two slide actuators are connected to each other. 1, 13, 21, 31, ... slide body 2, 25, 26, 32 ... rod 2a ... round groove 3 , 33 ...... Fixed block 4 ...... Linear bearing 5 ...... Holder 6 ...... Cylinder chamber 7 ...... Through hole 8 ...... Piston 9, 16 ...... Fixing member 10, 14, 18 ...... With groove 11, 15, 20 ...... Female thread 12, 17, 19 …… Male thread 34 …… Screw hole

Claims (1)

[Scope of utility model registration request] 1. A slide body (13) having a cylinder chamber (6) inside and a dovetail groove (14) extending in the axial direction of the cylinder chamber (6) on the outer surface, and the cylinder chamber (6). ), And a movable piston (8) with the inside of the cylinder chamber (6) divided into two parts.
And a rod (2) which is connected to the piston (8) and whose both ends project from the one slide body (13).
And a fixed block (3) (3) connected to both ends of the rod (2) and the one slide body (13), and the rod (2) is movable only in the axial direction. A linear bearing (4) to support, fixing members (16) (16) provided in close contact with the outer surface of the one slide body (13), and a dovetail groove (14) of the one slide body (13). It has a female screw (15) movably mounted therein and a male screw (17) screwable to the female screw (15), and the fixing members (16) (16) are connected to each other by the cooperation thereof. A tightening member fixed to the slide body (13), and a cylinder chamber (6) inside, which is provided in close contact with the outer surface of the one slide body (13),
Also, the other slide body (21) having a dovetail groove (18) extending in the axial direction of the cylinder chamber (6) on the outer surface is mounted in the cylinder chamber (6) and at the same time in the cylinder chamber (6). A piston (8) that can be freely moved in a state where it is split into two
And a rod (26) which is connected to the piston (8) and whose both ends project from the other slide body (21).
And a fixed block (3) (3) connected to both ends of the rod (26) and the other slide body (21), and the rod (26) is movable only in the axial direction. A linear bearing (4) to support, a female screw (20) movably mounted in the dovetail groove (18) of the other slide body (21), and a male screw (2) screwable to the female screw (20). 19) and a tightening member for fixing the other slide body (21) to the fixing members (16, 16) by cooperating with each other, a slide actuator.