JPH11125209A - Attaching structure for actuator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the attaching structure of an actuator where metal fittings are made small and light to facilitate the attaching and detaching of an actuator, and apprehension about hindering the displacing action of the actuator is removed, and the positional accuracy of the actuator in the case of reassembly can be easily kept. SOLUTION: The displacement member 54 of a rodless cylinder 42 is detachably provided with attaching members 60a, 60b and a bracket 64 is set across each of attaching members 60a, 60b through screw member 68a-68d, 70a, 70b (70c, 70d). A table 72 is fixed to the bracket 64, and a guide mechanism is composed of a guide block 74 and a rail member 76 on the lower face of the table 72. In the case of removing thr rodless cylinder 42, the attaching member 60a on one side can be removed by removing the screw members 68a, 68b, 70a, 70b, and the rodless cylinder 42 can thereby be removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actuator mounting structure capable of easily mounting and dismounting an actuator and having a small and lightweight mounting bracket.

[0002]

2. Description of the Related Art Conventionally, as a structure for attaching a table to a displacement member of an actuator such as a rodless cylinder, there is a structure employing an attachment structure 10 as shown in FIG. That is, a step 16 is formed in the frame 14 to which the actuator 12 is attached, and the actuator 12 is fixed to the frame 14 by the holding member 18. A displacement member 20 that can be displaced under the urging action of the actuator 12 is provided at a lower portion of the actuator 12, and one side of the displacement member 20 has a mounting bracket 2.
2 is fixed at one end. The mounting bracket 22 bypasses the side of the actuator 12, and a table 24 disposed above the actuator 12 is fixed to the other end.
A guide block 26 is fixed to a lower portion of the table 24, and the guide block 26 is slidably displaced along a rail member 28 fixed to an upper portion of the frame 14.

In such a configuration, a groove (not shown) through which a mechanism (not shown) for connecting the power transmission means inside the actuator 12 to the displacement member 20 is inserted into the actuator 12.
Because there is no concern that dust or the like will enter the interior of the actuator 12.

[0004]

However, in the actuator mounting structure 10 according to the prior art, it is necessary to first remove the mounting bracket 22 in order to remove the actuator 12 during maintenance or the like. In this case, the mounting bracket 22 is fitted and coupled to the table 24, and when the end of the mounting bracket 22 is close to the step 16 and the movement of the actuator 12 in the displacement direction is restricted, Since it is difficult to detach the mounting bracket 22 from the table 24, the table 24 must be removed from the guide block 26, and there is a problem that the operation becomes complicated. When the table 24 is removed from the guide block 26, the table
4 and the guide block 26 must be aligned, and such assembling work is also complicated.

[0005] Further, the mounting bracket 22 includes the actuator 1.
2 is provided only on one side of the table 2.
It is necessary to increase the strength of the mounting bracket 22 that supports the mounting bracket 4, and accordingly, the mounting bracket 22 becomes large, causing a problem that the manufacturing cost rises. Furthermore, there is a concern that the work 30 will apply an eccentric load in the direction of arrow A to the mounting bracket 22, which may disturb the displacement operation of the actuator 12. Also, the displacement force of the displacement member 20 is
When the force is transmitted to the actuator, a biased force is applied to the displacement member 20 due to the reaction, and in this case, there is a concern that the displacement of the actuator 12 may be affected.

SUMMARY OF THE INVENTION The present invention has been made to overcome the above-mentioned various inconveniences, and has reduced the size and weight of the mounting bracket to facilitate the mounting and dismounting of the actuator.
It is an object of the present invention to provide an actuator mounting structure that eliminates a concern that a displacement operation of the actuator may be hindered and that can easily maintain the positional accuracy of the actuator during reassembly.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a pair of mounting members mounted on both side surfaces parallel to the direction of displacement of a displacement member which is linearly displaced under the action of an actuator. And a bracket that supports a table that transports the work, and is bridged between the mounting members. Each mounting member has an elongated hole or a groove formed therein, and both sides of the displacement member are opposed to each other. A fitting member having a flat portion that fits into the elongated hole or the groove is provided.

According to the present invention, when one of the mounting members is removed from the bracket while the actuator is mounted on the frame or the like, the other mounting member can be removed from the fitting member of the displacement member. There is no need to remove the actuator from the table, and the operation of removing the actuator from the frame or the like becomes easy.

In this case, when the bracket is supported on the main body of the actuator via a guide mechanism including a guide groove and a guide member, the load applied to the bracket is supported by the main body of the actuator. Since the load applied to the mounting bracket is reduced, the size and weight of the guide mechanism for supporting the table on the frame or the like can be reduced, which is preferable.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An actuator mounting structure according to the present invention will be described in detail below with reference to preferred embodiments and attached drawings.

In FIG. 1, reference numeral 40 denotes an actuator mounting structure according to a first embodiment of the present invention. The actuator used in the mounting structure 40 is a rodless cylinder 42, and the rodless cylinder 4
2 has a long cylinder tube 44. End plates 43a, 43 are provided at both ends of the cylinder tube 44.
b is fixed, and support members 45a and 45b are fixed to the upper portions of the end plates 43a and 43b, as shown in FIG. One side surface of the support members 45a and 45b is fixed to the wall of the frame 47, so that the cylinder tube 44 is supported at a predetermined distance from the step 49 of the frame 47. A plurality of grooves 46 with which a detection switch (not shown) is engaged are formed on the side surface of the cylinder tube 44 along the longitudinal direction. As shown in FIG. 3, inside the cylinder tube 44, a piston portion 50 having a cylindrical body 48 extending along the longitudinal direction thereof and having pistons (not shown) at both ends is provided. You. The cylindrical member 48 forming the piston portion 50 is displaced by a connecting member 53 through a slit 52 formed in the lower surface of the cylinder tube 44.
4 is connected, and the displacement member 54 is disposed below the cylinder tube 44.

As shown in FIG. 1, fitting members 56a and 56b are fixed to both side surfaces of the displacement member 54 along the displacement direction. The fitting member 56 having a substantially cylindrical shape.
A pair of parallel planes 58 extending in the vertical direction are formed on a and 56b, and mounting members 60a and 60b are mounted on the fitting members 56a and 56b. Each mounting member 6
0a, 60b are provided at the lower end portions thereof with the fitting members 56a, 56b.
U-shaped grooves 62a, 62b fitted in the parallel surface 58
Is formed.

A bracket 64 is bridged between the mounting members 60a and 60b. A substantially U-shaped concave portion 66a, 66b is defined on a side portion of the bracket 64. A plurality of screw members 70 a to 70 b are provided on one side wall of the recesses 66 a and 66 b so as to be parallel to the displacement direction of the bracket 64.
0d is provided, and the other side wall portion is provided with reference surfaces 67a, 67b.
Is formed as The upper ends of the mounting members 60a, 60b are engaged with the recesses 66a, 66b. The bracket 64 is attached to the mounting member 60 by a plurality of screw members 68a to 68d orthogonal to the direction of displacement of the bracket 64.
a, 60b detachably fastened to the screw member 70a
By pressing the mounting members 60a, 60b against the reference surfaces 67a, 67b by tightening to 70d, the bracket 64 is positioned with respect to the mounting members 60a, 60b.

A long table 72 is fixed to the upper portion of the bracket 64, as shown in FIGS. A guide block 74 is fixed to a lower end of the table 72, and the guide block 74 is slidably engaged with a rail member 76 fixed to an upper portion of the frame 47.
A work 78 can be placed on the table 72.

The actuator mounting structure 40 according to the first embodiment of the present invention is basically configured as described above, and the operation and effect thereof will be described next.

When the rodless cylinder 42 is urged,
The displacement member 54 is displaced along its longitudinal direction (the direction of arrow A in FIG. 2), and the mounting members 60a, 60b, the bracket 6
The table 72 is also displaced along the rail member 76 through the fourth member 4. For this reason, the work 78 placed on the table 72
Is transported.

Here, the table 72 and the displacement member 54 which are displaced along the rail member 76 are provided between the fitting members 56a, 56b and the attachment members 60a, 60b due to their running accuracy, axis misalignment and the like. 2, a relative displacement occurs in a direction (arrows B and C directions in FIG. 2) orthogonal to the displacement direction of the displacement member 54, but the mounting members 60a and 60b
Since the displacement members 54a and 56b can be displaced in the directions of arrows B and C, the displacement member 54 can be prevented from being subjected to an eccentric load due to the occurrence of axial misalignment, and the concern that the rodless cylinder 42 is damaged can be wiped out. .

On the other hand, when removing the rodless cylinder 42 from the frame 47 for maintenance or the like,
Screw member 68 fastened to one mounting member 60a
a and 68b are removed with a screwdriver or the like.
By loosening Oa and 70b, the mounting member 60a can be removed from the bracket 64. The mounting member 60a and the fitting member 56a of the displacement member 54 are
2a and only by the parallel surface 58,
The mounting member 60a is removed from the displacement member 54.

Similarly, the fitting member 56b can be removed from the other mounting member 60b as it is. Therefore, the rodless cylinder 42 can be removed by releasing the fixing state of the supporting members 45a and 45b to the step portion 49 after removing one of the mounting members 60a. Therefore, the rodless cylinder 42 can be easily removed from the frame 47 without removing the bracket 64 and the table 72 or the table 72 and the guide block 74.

When the rodless cylinder 42 is mounted on the frame 47 again, the rodless cylinder 4
The parallel surface 58 formed on the second fitting member 56b is fitted into the groove 62b of the mounting member 60b. Next, the fitting member 56
The groove 62a of the mounting member 60a is fitted to the parallel surface 58 of the position a. Next, the mounting member 60a is temporarily fixed to the concave portion 66a of the bracket 64 by the screw members 68a and 68b, and the mounting members 60a are pressed against the reference surface 67a by tightening the screw members 70a and 70b. In this state, the screw members 68a, 68
By fastening b, reproducibility of the position of the mounting member 60a with respect to the reference surface 67a is ensured.

In this case, the bracket 64 and the table 7
2, or since the positioning between the table 72 and the guide block 74 becomes unnecessary, the rodless cylinder 42
Is also easily attached to the frame 47.

The displacement member 54 of the rodless cylinder 42 has two mounting members 60a provided on both sides thereof.
Since the load of the work 78 is supported by the 60b, the load applied to each of the mounting members 60a and 60b becomes equal, unlike the case where the mounting member is provided only on one side as in the related art, so that the size is small. -It is possible to reduce the manufacturing cost by reducing the weight. In addition, an eccentric load due to the load of the work 78 is not applied to the displacement member 54, and the displacement force of the displacement member 54 is reduced by the two mounting members 6.
0a and 60b are evenly applied, so that a biased force is prevented from being applied to the displacement member 54 due to the reaction, and there is no concern that the displacement operation of the rodless cylinder 42 is hindered.

The mounting members 60a and 60b have the same configuration, and the bracket 64 is also formed symmetrically. Therefore, depending on the shape of the table 72 and the frame 47, either one of the side surfaces or the other side surface can be used. The rodless cylinder 42 can also be easily attached or detached from the side.

In the first embodiment, the mounting member 6
Although grooves 62a and 62b are formed in 0a and 60b, instead of the grooves 62a and 62b, elongated holes that extend in the vertical direction and can be fitted to the parallel surfaces 58 of the fitting members 56a and 56b are also available. Good.

Next, an actuator mounting structure 100 according to a second embodiment will be described with reference to FIG. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

A rodless cylinder 102, which is an actuator used in the mounting structure 100, includes a cylinder tube 104, and a guide groove 110a, 110b extending in the longitudinal direction above the cylinder tube 104.
Is formed. On the other hand, sliding members 106a and 106b slidably engaged with the guide grooves 110a and 110b are fixed to a lower portion of the bracket 108.

With this configuration, the load of the work 78 placed on the table 72 is reduced by the sliding member 106.
a, 106b and the guide grooves 110a, 110b, the bearing is supported by the cylinder tube 104, so that the load applied to the guide block 74 and the rail member 76 is reduced.
It becomes possible to form it lightweight.

In place of the sliding members 106a and 106b and the guide grooves 110a and 110b, as shown in FIG. 5, a V-shaped guide groove 12 is formed on a side surface of a cylinder tube 122 of a rodless cylinder 120 as an actuator.
4a and 124b are formed, and the guide groove 124 is formed below the bracket 126 via pivot members 128a and 128b.
a, 130b engaging guide rollers 130a, 130
b may be provided.

[0029]

According to the actuator mounting structure of the present invention, the following effects and advantages can be obtained.

When the actuator is removed for maintenance or the like, the actuator can be removed from the frame simply by removing the mounting member with a screwdriver or the like. Therefore, there is no need to remove the bracket and the table or the table and the guide block. Becomes easier. Also, when the actuator is mounted on the frame again, the bracket and the table or the table and the guide block do not need to be aligned, so that the mounting is easy and the working efficiency is improved.

Further, mounting members are provided on both sides of the displacement member, and the load of the work is evenly supported by the respective mounting members. Therefore, the mounting member can be formed small and lightweight, and the work can be carried out by the work. Since no eccentric load is applied, there is no concern that the displacement action of the actuator is hindered.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an attachment structure of an actuator according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a mounting structure of the actuator of FIG. 1;

FIG. 3 is a partial sectional front view showing a mounting structure of the actuator of FIG. 1;

FIG. 4 is a partial cross-sectional front view showing an actuator mounting structure according to a second embodiment of the present invention.

FIG. 5 is a partially sectional front view showing a rodless cylinder used in an actuator mounting structure according to another embodiment of the present invention.

FIG. 6 is a partial cross-sectional front view showing a mounting structure of an actuator according to a conventional technique.

[Explanation of symbols]

40, 100: Actuator mounting structure 42, 102, 120: Rodless cylinder 54: Displacement member 56a, 56b: Fitting member 58: Parallel surface 60a, 60b: Mounting member 46, 62a, 62b: Groove 64, 108, 12
6 Bracket 67a, 67b Reference surface 68a-68d, 70a-70d Screw member 72 Table 74 Guide block 76 Rail member 78 Work 106a, 106b Sliding member 110a, 110b, 124a, 124b Guide groove 130a, 130b ... guide rollers

Claims (5)

[Claims] 1. A pair of mounting members mounted on both side surfaces parallel to the direction of displacement of a displacement member that is linearly displaced under the action of an actuator, and a table for transporting a work is supported. A bracket to be bridged, and a long hole or a groove portion is formed in each of the mounting members, and both sides of the displacement member have opposed flat portions to fit into the long hole or the groove portion. An attachment structure for an actuator, wherein a joining member is provided. 2. The actuator mounting structure according to claim 1, wherein said bracket is supported on a main body of said actuator via a guide mechanism. 3. The mounting structure for an actuator according to claim 2, wherein the guide mechanism includes a guide groove provided in a main body of the actuator or the bracket and extending in a longitudinal direction of the actuator. And a guide member that fits together. 4. The actuator mounting structure according to claim 3, wherein said guide member is a sliding member provided at a lower portion of said bracket. 5. The actuator mounting structure according to claim 3, wherein the guide member is a guide roller that engages with the guide groove formed in a side surface of the actuator. .