JPH01122846A - Conveyance device - Google Patents

Abstract

PURPOSE:To control movement of a work completely in a non-contact state in a given direction at a given speed, by a method wherein a plurality of coils and position detecting sensors are situated at intervals of a given distance on a conveyance passage surface. CONSTITUTION:By properly switching excitation of a coil 7 based on a substance to be conveyed position signal from a position detecting sensor 8, movement of a work 1 can be controlled so that not only linear movement but also curve movement is practicable. By stopping the switching motion of the excitation coil 7 in a predetermined given position, the work 1 can be positioned in a state to hold floating in the place. The speed of the work 1 is decided by the switching motion speed of the excitation coil 7.

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.

FIGS. 4 and 5 are a perspective view and a sectional view of a conventional conveying device disclosed in, for example, Japanese Patent Laid-Open No. 102581/1983. In these figures, 1 is a workpiece and 2 is a conveyance path. Guides 3a and 3b for guiding the workpiece 1 when it is transported are protruding from both ends of the transport path 2. Further, the conveying path 2 is provided with a conveying air blowing hole 4 that blows out air that generates a propulsive force to levitate the workpiece 1 and convey it at the same time so as to blow the air approximately at the center and both sides of the workpiece 1. There is. Further, all of the conveyance air blowing holes 4 are inclined at a constant angle with respect to the traveling direction of the workpiece 1, and their lower ends are formed in communication with an introduction 5 provided in the conveyance path 2.

The conventional conveying device configured as described above levitates the workpiece 1 several millimeters by air blown out from the conveying air blowing hole 4 of the conveying path 2, and at the same time performs work in the inclination direction of the conveying air blowing hole 4. Since the air is blown out, a propulsive force acts on the workpiece 1 in the direction of inclination, and the workpiece 1 is conveyed in the direction of the arrow X in the figure.

[Problem that the invention seeks to solve]

Since the conventional conveyance device is configured as described above, the workpiece can only be conveyed in the direction of inclination of the conveyance air blowing hole, and the problem is that the workpiece cannot be positioned and stopped at a predetermined position. There was a point. In addition, since force (propulsive force) acts on the work only in the direction of movement, if the conveyance path bends, the inertia of the work will contact the guiding guide and the work will be conveyed completely in a non-contact state. The problem was that it was not possible.

This invention was made to solve the above-mentioned problems, and its purpose is to provide a conveying device that is capable of completely non-contact conveying of a workpiece by eliminating the need to convey the workpiece by air. .

[Means for Solving the Problems] A conveyance device according to the present invention is a conveyance device that floats a workpiece on a conveyance path and conveys it, in which a superconductor material is formed on the surface of the workpiece on the conveyance path side, and a superconductor material is formed on the surface of the conveyance path. A plurality of coils are provided whose excitation is switched at predetermined intervals, and at the same time, a position detection sensor is provided that detects the workpiece at predetermined intervals and outputs a conveyed object position signal, and the conveyed object position signal output from this position detection sensor is The apparatus includes a movement control section that controls the movement of the workpiece in a predetermined direction and speed by switching and controlling the excitation of the plurality of coils in response to a body position signal.

[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 and position detection sensors are provided at predetermined intervals on the transport path surface. The movement control unit controls excitation of the plurality of coils that apply magnetic flux to the superconductor material formed on the workpiece in response to the conveyed object position signal output from the position detection sensor, and controls the excitation of the coils to move the workpiece. Control movement in a predetermined direction and speed.

〔Example〕

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

FIGS. 1 and 2 are a schematic partial 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 6 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 7 are arranged at predetermined intervals on the surface of the conveyance path 2 to generate magnetic flux perpendicularly to the conveyance path 2 to levitate the workpiece 1. It is set in. Further, like the coils 7, the transport path 2 is provided with a position detection sensor 8, which detects the workpiece 1 and outputs a position signal of the transported object. 9 is a movement control unit, and position detection sensor 8...
Workpiece 1 is controlled by switching the excitation of coil 7 in response to the conveyed object position signal output from ...
control the movement in a predetermined direction and speed.

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. 6 (in this example, the thin film 6 is applied to the entire surface of the workpiece 1, so it is the same as the outer circumference of the wire 1).
This is a case where the approximate center of the coil is located at . That is, in the figure, when the work 1 is positioned at a position corresponding to the ten coils 7a and 7j, it is possible to levitate the work 1 in the most stable state. By this, if the coils 7 to be excited are switched appropriately, for example, if the excitation of the coils 7d to 7f is stopped and at the same time the excitation of the coil 7 to 7m is started, the workpiece 1 will be moved as shown by the broken line. It becomes possible to move in the direction of arrow Y. Therefore, by appropriately switching the excitation of the coils 7 based on the conveyed object position signals from the position detection sensors 8, the workpiece 1 can be moved not only in a straight line but also in a curve. Allows movement to be controlled. Furthermore, by stopping the switching operation of the exciting coils 7 at a predetermined location, it is possible to position the workpiece 1 while keeping it floating at that location. Work 1
Needless to say, the speed of the excitation coil 7 is determined by the speed of the switching operation of the exciting coil 7.

Moreover, as shown in FIG. 3, a plurality of coils 7...
It is also possible to control the positioning of the workpiece 1 more accurately by rotating the transport path 2 itself, on which the position detection sensor 8 is provided, in the direction of the arrow Z in the figure.

[Effects of the Invention] As described above, according to the present invention, a superconductor material is formed on the surface of the workpiece on the conveyance path side, and a plurality of coils and position detection sensors are provided at predetermined intervals on the conveyance path surface. Since the movement controller is configured to switch and control the excitation of the coil, it is possible to magnetically levitate the workpiece and control the movement of the workpiece in a predetermined direction and speed, eliminating the need to transport the workpiece by air. This has the effect of allowing workpieces to be transported completely without contact.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view of an embodiment of the conveying device according to the present invention, FIG. 2 is a partial plan view of the conveying device of this embodiment, and FIG.
The figure is a partial plan view of a modified example of the conveyance device of this embodiment, and the fourth
The figure is a perspective view of a conventional conveyance device, and FIG. 5 is a sectional view of the conventional conveyance device. 1 is a workpiece (object to be transported), 2 is a transport path, 6 is a thin film of high temperature superconductor material (superconductor material), 7... is a coil, 8... is a position detection sensor; 9 is a movement control unit; Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Masuo Ohatsu (2 idiots) Go to N 3 (3rd vg Figure 4 s5)

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. At the same time as providing the coil, a position detection sensor is provided which detects the transported object at predetermined intervals and outputs a transported object position signal, and receives the transported object position signal output from the position detection sensor and detects the transported object position signal. 1. A transporting device comprising: a movement control section that controls the movement of the transported object in a predetermined direction and speed by switching and controlling the excitation of the coil.