JPH01133841A - Conveyer - Google Patents

Abstract

PURPOSE:To enable a workpiece to be conveyed in its floatable height contactlessly with no necessity for air by forming a conveying surface of the workpiece with a superconductor material and providing an excitation control part of two or more coils, provided in a conveying path surface with every predetermined space, and a moving control part which controls an electric current. CONSTITUTION:A workpiece 1 can be conveyed in the most stable condition when almost the center of a coil is positioned in the periphery of a thin film 8 of high temperature superconductor material coating the workpiece 1. That is, when the workpiece 1 is positioned in a position corresponding to a part of ten coils 9a-9j, the workpiece 1 is enabled to be floated in the most stable condition. In this way, when the excited coils 9... are suitably switched, that is, when excitation of the coils 9k-9m is started simultaneously with stopping excitation of the coils 9d-9f, the workpiece 1 is enabled to be moved in a direction Y. Accordingly, a moving control part 10 switches the excitation of the coils 9... conveying the workpiece 1. Here by a flow of the current in the coils 9..., floating height is controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a conveyance device that conveys a plate-like object (hereinafter referred to as a work) in a completely non-contact manner.

[Conventional technology]

2. Description of the Related Art Conventionally, there is a conveyance device that floats a workpiece on a conveyance path and conveys the workpiece in a non-contact manner.

3 and 4 are a perspective view and a plan view of a conventional conveying device disclosed in, for example, Japanese Patent Application Laid-Open No. 61-270843. In these figures, 1 is a workpiece, and this workpiece 1 has a notch portion 1a that is partially cut away. Reference numeral 2 denotes a conveyance path, and at both ends there are guides 3a, 3b for guiding the workpiece 1 during conveyance, and stopper pins 4a, 4b for stopping the conveyance of the workpiece 1 and determining the stopping position of the notch 1a of the workpiece 1. is a protruding part. Further, in the conveyance path 2, there is a conveyance air blow-off hole 5 that blows out air that generates a propulsive force to levitate the workpiece 1 and simultaneously convey it, and a rotation air blow-off hole that blows out air that generates a rotational force on the workpiece 1. 6 are formed in large numbers. Further, a floating air blowing hole 7 for floating the workpiece 1 is formed in the center of the rotating air blowing hole 66.

The conventional conveyance device configured as described above floats the workpiece 1 several millimeters by air blown out from the conveyance air blowing hole 5 of the conveyance path 2, and at the same time conveys the workpiece I in the direction of the arrow X in the figure. . When the conveyed workpiece 1 hits the stopper bins 4a and 4b and the conveyance is stopped, the workpiece 1 is kept floating by a few millimeters by the air blown from the floating air blowing hole 7, and the rotating air blowing hole 66 Due to the air blown out, the workpiece 1 rotates in the direction of the arrow Y in the figure, and the workpiece 1 is moved to the stopper bin 4.
The notch portion 1a is positioned without contacting the portions a and 4b.

[Problem that the invention seeks to solve]

Since the conventional conveying device is configured as described above, in order to position the workpiece at a predetermined position, in addition to the conveyance air blowing hole for conveying the workpiece, there are also a rotating air blowing hole and a floating air blowing hole. It was necessary to set up In addition, the workpiece tends to come into contact with the guide during transportation, and especially during positioning, the workpiece is positioned while contacting the stopper bin, so it is impossible to position the workpiece in a predetermined position in a completely non-contact state. There was a point. Furthermore, there was a problem in that the workpiece could not be controlled in the vertical direction (levitation height).

This invention was made to solve the above-mentioned problems, and it eliminates the need for positioning the workpiece using air, allowing completely non-contact transport of the workpiece, and making it possible to freely adjust the floating height of the workpiece. The purpose of this invention is to obtain a conveying device that can be controlled in a controlled manner.

[Means for solving problems]

A conveyance device according to the present invention is a conveyance device that conveys a workpiece while floating on a conveyance path, in which a superconductor material is formed on the surface of the workpiece on the conveyance path side, and a plurality of layers are provided on the conveyance path surface for switching excitation at predetermined intervals. The apparatus is configured to include a movement control section that is provided with coils and controls excitation switching of the plurality of coils and current control to control the conveyed object in a predetermined direction, speed, and flying height.

[For production]

In this invention, a superconductor material is formed on the surface of the work on the transport path side, and a plurality of coils are provided at predetermined intervals on the transport path surface. The movement control unit controls excitation switching of a plurality of coils that apply magnetic flux to a superconductor material formed on the workpiece, thereby controlling the workpiece in a predetermined direction, speed, and flying height.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

FIGS. 1 and 2 are a perspective view and a plan view showing an embodiment of a conveying device according to the present invention. In the figure, 1 is a workpiece, and 2 is a conveyance path. A thin film 8 of a high temperature superconductor material is adhered to the surface of the workpiece 1 on the transport path 2 side. The conveyance path 2 is formed into a flat plate shape, and a plurality of coils 9 are arranged at predetermined intervals on the surface of the conveyance path 2 to levitate the workpiece 1 by generating magnetic flux in a direction perpendicular to the conveyance path 2. It is set in. 10 is a movement control unit, and coil 9...
The excitation switching control is performed to control the movement of the workpiece 1 in a predetermined direction and speed, and the coil 9...
Workpiece 1 is controlled by controlling the current flowing through and changing the excitation strength.
As shown in the arrow X direction in the figure, the flying height is controlled.

When the workpiece 1 is transported in the most stable state using the transport device of this embodiment configured as described above, as shown in FIG. 8 (in this example, the thin film 8 is coated on the entire surface of the work 1, so it is the same as the outer periphery of the work 1). That is, in the figure, when the work 1 is positioned at a position corresponding to the ten coils 9a to 9j, the work 1 can be levitated in the most stable state. By this, if the coils 9 to be excited are switched as appropriate, for example, the excitation of the coils 9d to 9f can be stopped and the coils 9
When -m excitation is started, the workpiece 1 can be moved in the direction of the arrow Y as shown by the broken line. Therefore, the movement control unit 10 switches the excitation of the coils 9 to convey the workpiece 1. At this time, the flying height of the workpiece 1 is controlled by the current flowing through the coils 9.

Further, by stopping the switching operation of the exciting coils 9 at a predetermined location, it is possible to position the workpiece 1 while keeping it floating at that location. The speed of the workpiece 1 is the excitation coil 9...
Needless to say, it is determined by the speed of the switching operation.

〔Effect of the invention〕

As described above, according to the present invention, a superconductor material is formed on the conveyance path surface of the workpiece, a plurality of coils are provided at predetermined intervals on the conveyance path surface, and control is performed to switch the excitation of the plurality of coils. Since it is equipped with a movement control section that controls the electric current, it is possible to eliminate the need to transport or position the workpiece using air, and it is possible to transport the workpiece completely without contact, as well as to freely adjust the height of the workpiece's levitation. This has the effect of providing a transport device that can be controlled.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view of an embodiment of a conveyance device according to the present invention, FIG. 2 is a plan view of the conveyance device of this embodiment, FIG. 3 is a perspective view of a conventional conveyance device, and FIG. 4 is a perspective view of a conventional conveyance device. It is a top view of a conveyance device. 1 is a workpiece (object to be transported), 2 is a transport path, 8 is a thin film of high temperature superconductor material (superconductor material), 9 is a coil, and 10 is a movement control unit. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] In a conveying device that levitates and conveys an object on a conveyance path, a plurality of superconductor materials are formed on the surface of the conveyance path side of the object, and excitation is switched at predetermined intervals on the surface of the conveyance path. The present invention is characterized by comprising a movement control unit that includes a coil, and controls excitation switching of a plurality of coils and current control to control the conveyed object in a predetermined direction, speed, and flying height. conveyance device.