JP3218707B2 - Confirmation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for confirming an operation member operated by an actuator.

[0002]

2. Description of the Related Art Conventionally, the operating end of a clamper or the like (operating member) operated by an actuator has been confirmed by operating a limit switch having an electric contact inside by a dog provided on the operating member. In order to improve the reliability of the limit switch, the limit switch is provided at a position where the chips do not fall, that is, above the jig device, and the operation of the operating member is converted into the turning motion of the lever, and further, the vertical movement of the operating rod is performed. After conversion, the limit switch was operated by a dog provided on the operating rod.

[0003]

When the lever and the operating rod are used, the reliability of the limit switch is improved, but the number of parts is increased, the device becomes complicated, and there is a problem that the design and the production are troublesome. .

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problem.
The present invention relates to a device for confirming an operating member which is moved forward and backward by an actuator, wherein an adapter is provided on an advancing and retracting side of the operating member, and a guide hole which opens to the operating member side is formed in the adapter. Member of the actuation member
A guide that supports and guides in the same direction as the reciprocating direction, and a dog that contacts the actuated member by the reciprocation thereof and moves the actuated member back and forth is positioned in the same direction as the reciprocating direction of the actuating member. The adapter is provided so as to be adjustable, and the adapter is provided with a gas supply passage having one end opened to the guide hole, and one end of the gas supply passage closed by an outer surface of the actuated member is communicated with the atmosphere by advancing and retreating of the actuated member. A relief passage is formed in the operated member, a gas supply device is connected to the other end of the gas supply passage, and a pressure detector for detecting a pressure of the gas supply passage is connected to the gas supply passage. It is. According to a second aspect of the present invention, in the confirmation device of the first aspect, the actuated member includes a moving direction of the operating member.
Spring biasing in one direction and biasing in the other direction
It is supported by the adapter via a spring .

[0005]

In the above arrangement, the gas is always supplied from the gas supply device to the gas supply passage, and when the operating member is not at the operating end position, the escape passage and the gas supply passage communicate with each other, and the gas supply passage is opened. Pressure does not rise. At this time, since the gas is constantly blown out from the escape passage, there is little possibility that the escape passage is blocked by the chips, and the pressure detector can be installed in a place where the chips are not covered by the freely-manageable piping, thereby causing a malfunction. Less likely to happen.
Next, when the operation member is moved to the operation end position by the operation of the actuator, the gas supply passage is closed by the outer surface of the operated member, and the air pressure in the gas supply passage increases,
When the atmospheric pressure reaches the set pressure, the pressure detection device issues a signal, so that the operation end position of the operation member can be confirmed.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a jig device for mounting a workpiece. Reference numeral 1 denotes a fixed base, on which a fixed base 1a is fixedly mounted on a fixed base 1, and on which the work T is mounted. A jig body 2 is fixedly mounted, and a mounting portion 2a on the upper part of the jig body 2 is provided.
The workpiece T can be attached to the workpiece. On both sides of the mounting portion 2a, clampers 3a and 3b for fixing the workpiece T are provided. This clamper 3a, 3b
Is pivotally supported on the jig main body 2 at a substantially center in the longitudinal direction so as to be rotatable around a horizontal axis. On the other hand, cylinders 6 are provided on both side surfaces of the jig body 2 in a vertical direction, and a piston rod 4 of a piston 7 fitted in a working chamber 6a formed in the cylinder 6 is provided at rear end portions of clampers 3a, 3b. Is linked to

Under the piston 7, the projecting operating members 5a, 5b integral with the piston rod 4 are projected from below the cylinder 6 even when the piston 7 stops at the uppermost end of the working chamber 6a. It is formed in a suitable length. Below the cylinder 6, a fixing member 8 having a fitting hole 8a is fixedly provided on the side surface of the jig main body 2. A confirmation adapter 9 is fitted into the fitting hole 8a of the fixing member 8. Have been.

The main body of the confirmation adapter 9 is formed with a guide hole 10 which penetrates up and down coaxially with the operating members 5a and 5b.
Are slidably inserted. The actuated member 11 is formed with a hollow hole 11a through which the actuating members 5a and 5b are movably inserted. As shown in FIG.
A radially protruding projection 12 is formed at the center of the actuated member 11, and a space 13 is formed in the main body of the confirmation adapter 9 so that the projection 12 can move up and down by a predetermined amount. Have been. In this space portion 13, springs 14, 15 are inserted above and below the projecting portion 12, whereby the actuated member 11 is elastically returned to an intermediate position in the vertical direction.

Further, as shown in FIG.
A relief passage 16 communicating with the hollow hole 11a is formed in the direction perpendicular to the moving direction.
When 1 is at the intermediate position, a clamp confirming gas supply passage 17 and an unclamping confirming gas supply passage 18 are arranged vertically adjacent to the confirmation adapter 9 so that air is discharged from the escape passage 16. Has been drilled.

At the open ends of the gas supply passages 17 and 18 on the fixing member 8 side, annular concave grooves 19 and 20 are formed, respectively, and are shown in FIG. As described above, the two gas supply passages 17 and 18 communicate with the gas supply passages 21 and 22 formed in the fixing member 8. Here, in FIG. 4, 23a, 23b and 23c are annular concave grooves 19 and 20.
This is a seal member for preventing air from leaking from the air.

The gas supply path 2 formed in the fixing member 8
As shown in FIG. 1, 1 and 22 are respectively connected to gas supply paths 24 and 25 formed in the jig main body 2. As shown in FIG. 1, the gas supply passages 24 and 25 communicate with the gas supply passages of the other adapters 9 for confirmation, and the connection holes 27 for confirmation of clamps, which are open to the outside from the side surface of the fixed base 1a, and the confirmation holes for confirmation of unclamps. Each is connected to the connection hole 28.

As shown in FIG. 1, the clamp confirmation connection holes 27 and the unclamping confirmation connection holes 28 are respectively provided with pressure detectors 29 and 30 such as FC switches for emitting a signal when a set pressure is reached. A gas supply device 31 that constantly supplies air to the gas supply passage is connected via a free piping. With the piping, the pressure detectors 29 and 30 can be installed at any positions where chips are not applied.

As shown in FIG. 1, the actuating members 5a and 5b are formed with threaded portions 32a and 32b, and dogs 33 and 34 can be vertically adjusted with the confirmation adapter 9 therebetween. It is screwed. The dog 33 comes into contact with the lower end of the actuated member 11 when the piston 7 rises, and raises the actuated member 11 against the urging force of the spring 14,
When the piston 7 stops at the uppermost end, that is, when the clamping of the workpiece T is completed, the gas supply passage 17 for confirming clamping is arranged at a position closed by the outer peripheral side surface of the operated member 11. Similarly, the dog 34 is disposed at a position where the unclamping confirmation gas supply passage 18 is closed by the outer peripheral side surface of the operated member 11 when the unclamping of the workpiece T is completed.

Next, the operation of the above configuration will be described. In FIG. 1, when the clampers 3a and 3b clamp the workpiece T, the operated members 11 of the respective confirmation adapters 9 are pushed upward by the dogs 33, and the clamp confirmation gas supply passage 17 is It is closed by the outer peripheral surface of the operated member 11. Since air is always supplied to each gas supply passage from the gas supply device, the pressure in the clamp confirmation gas supply passage 17 rises, and the pressure reaches the set pressure of the pressure detector 29, and the pressure detector 29 issues a signal to confirm the clamp state.

Next, in the unclamped state, the operated member 11 is pushed down by the dog 34, and the unclamping confirmation gas supply passage 18 is similarly moved to the operated member 1.
1 is closed by the outer peripheral surface. As a result, the pressure in the unclamping confirmation gas supply passage 18 increases, and the unclamping state is confirmed by the pressure detector 30. As described above, since the clamp / unclamp is checked, the electrical contact in the operation check can be eliminated,
Moreover, the pressure detector 29,
Since the device 30 can be installed in a place where the chips do not come into contact with chips, there is little possibility of malfunction or erroneous confirmation. In addition, since the gas is constantly ejected from the escape passage 16, the escape passage 16 is less likely to be blocked by chips, and the confirmation adapter 9 is used.
Is less likely to cause a malfunction. Furthermore, since the device configuration can be simplified, the effect of shortening the time for design and manufacture can be obtained.

[0016]

According to the present invention, an adapter is provided on an advancing / retreating side of an operating member which advances and retreats by an actuator, and a gas supply device and a pressure detector are connected to a gas supply passage formed in the adapter. A guide hole communicating with the passage is formed in the adapter, and an actuated member that is actuated by the actuating member in the guide hole and closes the gas supply passage is guided and supported in the same direction as the moving direction of the actuating member. A relief passage for communicating one end of the gas supply passage to the atmosphere by moving the operating member back and forth is formed in the operated member, and the gas supply passage is closed by the outer surface of the operated member only when the operating member is at the operating end position. When the operating member is at the operating end position, the pressure in the gas supply passage increases, and the pressure detector emits a signal, whereby the operating member is Since so as to perform the confirmation of the operation end position, it can be eliminated electrical contacts in operation check, and since the gas is ejected continuously from the relief passage,
The escape passage is less likely to be blocked by the chips, and the pressure detector can be installed in a place where the chips are not covered by the freely manageable piping, so that there is less possibility of malfunction. Furthermore, since the device configuration can be simplified,
The effect of shortening the time for design and manufacture is obtained.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing a jig according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a confirmation adapter in FIG.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a sectional view taken along line BB in FIG. 3;

[Explanation of symbols]

 5a, 5b Operating member 6 Cylinder (actuator) 9 Adapter for confirmation 10 Guide hole 11 Operated member 16 Relief passage 17, 18 Gas supply passage 29, 30 Pressure detector 31 Gas supply device

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-73245 (JP, A) JP-A-2-15839 (JP, U) JP-A-4-106141 (JP, U) JP-A-3-106 100036 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B23Q 17/00 B23Q 3/06 304

Claims (2)

(57) [Claims] 1. A device for confirming an operating member which is moved forward and backward by an actuator, wherein an adapter is provided on the moving side of the operating member, and a guide hole which opens to the operating member side is formed in the adapter. The operating member is defined as
Guided and supported in the same direction, and contacted with the actuated member by the
Contact advance of the actuating member a dog for advancing and retracting the same the actuated member
The adapter is provided so as to be position-adjustable in the same direction as the withdrawal direction, the adapter is provided with a gas supply passage having one end opening to the guide hole, and one end of the gas supply passage closed by an outer surface of the actuated member is attached to the actuated member. Forming a relief passage for communicating with the atmosphere by advancing and retreating of the operated member, connecting a gas supply device to the other end of the gas supply passage, and connecting a pressure detector for detecting a pressure of the gas supply passage to the gas supply passage; A confirmation device, characterized in that: 2. The method according to claim 1, wherein the actuated member is configured to move the operating member forward or backward.
Spring biasing in one direction and biasing in the other direction
The confirmation device according to claim 1, wherein the confirmation device is supported by the adapter via a spring .