JPH0212686B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for moving and stopping tools and workpieces, and is capable of moving tools and workpieces to any position forward, backward, left, right, or up and down, and completely stopping them, with high precision. It is possible to perform high-load work, and it is easy to adopt an air slide system. In that case, it is possible to obtain durability and energy saving effects with a non-contact and low coefficient of friction, and there is no mechanical noise. It is possible to obtain effects that would not otherwise occur.

In various automatic machines, it becomes necessary to move tools or workpieces to arbitrary positions and to keep them completely still.

Motors, cylinders, etc. are used for the above movement and complete standstill, but in order to move in any direction, it is necessary to combine many motors, cylinders, etc., making the device extremely complex and expensive. There were flaws.

Furthermore, it is difficult for the conventional apparatus described above to maintain a completely stationary state even under high loads, and it is necessary to increase the strength of the members and provide various accessories.

In the present invention, in order to eliminate the above drawbacks,
A fixed ceiling is provided, and the slide block is fixed to the fixed ceiling by suction at an arbitrary position.

One embodiment will be described in detail below with reference to the drawings.

FIG. 1 shows an example in which the present invention is applied as a workbench unit. Of course, the present invention can take various other forms.

As shown in FIGS. 1 and 2, a fixed ceiling 1 is provided in the present invention.

The fixed ceiling 1 has a smooth lower surface and is completely fixed at a predetermined height together with guide rails 2 and 2a provided on both sides thereof.

Next, sliders 3 and 3a are fitted onto the guide rails 2 and 2a, respectively.

The sliders 3, 3a are the guide rails 2, 2a.
It has a shape that fits the outer and upper and lower surfaces of the guide rails 2 and 2a, and is configured to slide along the guide rails 2 and 2a.

Next, the upper portions of the sliders 3 and 3a are connected by a connecting plate 4 above the fixed ceiling 1 so as to be movable.

In the case of the embodiment shown in the drawings, a ball hot 5 is provided on the connecting plate 4 side, and a screw rod 6 supported on the fixed ceiling 1 side is screwed into the ball nut 5.
The connecting plate 4 and the sliders 3, 3a are moved by rotating the motor _M1 .

However, the movement described above can also be performed using a rack and pinion, a timing belt, a linear motor, etc.

Next, a guide rail 7 and a screw rod 8 are provided between the sliders 3 and 3a below.

In the case of the illustrated embodiment, the guide rail 7 has a cross-sectional shape, and a screw rod 8 is rotatably supported below the guide rail 7, and a motor for rotating the screw rod 8 is mounted on a slider 3a at one end of the screw rod 8.
_M2 is provided.

Further, a slide block 9 is provided surrounding the guide rail 7 and the screw rod 8, and is movable up and down and slid by the screw rod 8.

The details are shown in FIGS. 3 to 5.
That is, the slide block 9 is connected to the guide rail 7.
Upper plate 9a located on the top surface, side plates 9b, 9 located on both sides and extending below the screw rod 8.
The screw rod 8 and the ball nut 10 screwed therein are located inside the screw rod 8 and the bottom plate 9d.

The slide block 9 is configured to move up and down with respect to the screw rod 8 and the ball nut 10, and to be integrated when sliding.

That is, the extension part 1 is located below the ball nut 10.
0a is provided, and the extension portion 10a is fitted into a through hole 11 provided in the bottom plate 9d of the slide block 9 so as to be vertically movable.

Next, an air intake port 12 is provided on the upper surface of the slide block 9, specifically, on the upper surface of the upper plate 9a, and a flexible sealing material 13 that is in close contact with the lower surface of the fixed ceiling 1 is provided around the upper surface. It will be done.

In the case of the embodiment shown in the drawings, the sealing material 13 that is in close contact with the fixed ceiling 1 is flexible and has a tube-like structure, and is normally in a contracted state. When air is supplied inside, it expands and seals the lower surface of the fixed ceiling 1. It is configured to fit closely.

14 in the figure is an air supply port to the sealing material 13. Note that an actuator may be used as a mechanism for bringing the sealing material 13 into close contact with the fixed ceiling 1.

Furthermore, in the embodiment shown in FIGS. 3 to 5, air jets 15, 16, and 17 are provided on the surface of the slide block 9 facing the guide rail 7, specifically, on the top plate 9a and the side plates 9b and 9c. When the slide block 9 slides, air is supplied between the slide block 9 and the guide rail 7 to enable non-contact sliding and reduce frictional resistance.

A similar configuration is also provided between the guide rails 2, 2a and the sliders 3, 3a.

That is, air injection ports (not shown) are provided on the surfaces of the sliders 3, 3a facing the outer and upper and lower surfaces of the guide rails 2, 2a, respectively. 1 in the diagram
8 is a guide provided below the slide block 9, and 19 is a support portion for a tool or workpiece provided on the guide 18 so as to be movable up and down.

That is, one side of the guide 18 is left in an open state, and a rotatable screw rod 20 is provided inside, and a ball nut (not shown) screwed onto the screw rod 20 is connected to the support portion 19, and is set at an appropriate position. The support portion 19 is moved up and down by rotating the screw rod 20 with a motor (not shown).

However, if there is no need to move the tool or workpiece up and down, it is sufficient to configure the guide 18 or the slide block 9 directly with a tool attachment part, a workpiece gripping part, or the like.

In the embodiment shown in the drawings, a tool is attached to the support portion 19 or a workpiece gripping portion is configured.

In the figure, 21 is an intake hose, 22 is an ejector pump that serves as a vacuum source, 23 is a switching valve, 24 is a compressed air supply source such as a compressor, 25 is an air supply hose, 26 is a switching valve, 27 is a regulator, and 28 is a compressor. Air supply source such as 2
9, 29a is an air supply hose, 30 is a switching valve, 3
1 is a regulator, and 32 is an air supply source such as a compressor.

In the present invention having the above configuration, in FIGS. 1 and 2, movement in the left and right direction is performed by rotating the screw rod 6 with the motor _M1 , and movement in the front and rear direction is performed by the motor _M2.
This is done by rotating the screw rod 8, and in either case, each of the air injection ports 15,
Air is injected from 16, 17, etc., and the sliders 3, 3a and slide block 9 are moved in a non-contact state. Further, the vertical movement of the support portion 19 is performed by rotation of the screw rod 20.

Next, a description will be given of how the slide block 9 comes to a complete standstill when moved to a predetermined position.

FIG. 3 shows a state in which the slide block 9 has been moved to a predetermined position by the above operation.

That is, the slide block 9 is supported by the guide rail 7, and air injection is further stopped.

Next, as shown in the fourth figure, the switching valve 30 is switched to supply air from the air supply hose 29a to the air supply port 14 of the sealing material 13.

As a result, the sealing material 13 expands and its upper end comes into close contact with the lower surface of the fixed ceiling 1. After confirming that, connect the compressed air supply source 24 to the ejector pump 22.
Compressed air is sent to the air intake port 12 and the air on the upper surface of the slide block 9 surrounded by the sealing material 13 is discharged through the intake hose 21. the result,
The upper surface of the slide block 9 surrounded by the sealing material 13 becomes a vacuum, and the slide block 9 eventually rises to the fixed ceiling 1 side as shown in FIG. , a resistance force that could not be obtained in the past is generated against movement from side to side and back and forth, and furthermore, the vertical direction is regulated by the fixed ceiling 1, so that pressing operations etc. are not hindered.

Next, in order to release the static fixation of the slide block 9, if the supply of air from the compressed air supply source 24 to the ejector pump 22 is stopped, the slide block 9 surrounded by the sealing material 13 can be removed via the intake hose 21. When the upper surface of the slide block 9 is exposed to the atmosphere and the supply of air to the sealing material 13 is stopped, the slide block 9 descends under its own weight, returning to the state shown in FIG. 3, and is free to move thereafter.

As mentioned above, the present invention provides a fixed ceiling and allows the slide block to be fixed completely stationary there, so that even when a high load is applied to tools and workpieces, no deviation occurs and high precision can be maintained. Furthermore, it is easy to configure the entire system as an air slide system, in which case the friction coefficient is reduced due to non-contact operation, and control using a small, high-precision motor becomes possible, resulting in increased durability and energy-saving effects. Moreover, it is possible to obtain the effect that no mechanical noise is generated.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is an overall perspective view, FIG. 2 is a perspective view of the main parts viewed from below, and FIGS. 3 to 5 show the movable states of the main parts. FIG. 1... Fixed ceiling, 2, 2a... Guide rail, 3,
3a...Slider, 4...Connecting plate, 6...Screw rod, 7...Guide rail, 8...Screw rod, 9...
Slide block, 12...Intake port, 13...Sealing material.

Claims (1)

[Claims] 1 Sliders are fitted into guide rails provided on both sides of the fixed ceiling, and the upper portions of the sliders are connected above the fixed ceiling to be movable, and between the lower part of the slider is provided with a guide rail and a rotatable screw rod, and a slide block that is movable up and down and slides by the screw rod is provided surrounding the guide rail and screw rod, and an intake hole is provided on the top surface of the slide block. A moving and stationary device for tools and workpieces, characterized in that a sealing material is provided around the periphery to tightly adhere to the lower surface of a fixed ceiling. 2. Movement and stationary of tools and workpieces according to claim 1, characterized in that air injection ports are provided on the surface of the slider facing the guide rail and the surface of the slide block facing the guide rail. Device.