JPS5925572A - Conveyer - Google Patents

Abstract

PURPOSE:To hold the performance of a linear step motor in the prescribed condition by a method wherein the surfaces of the cores of the linear step motor fixed on the ground and to act as the driving mechanism is cleaned by traveling of a carrying truck. CONSTITUTION:Electromagnetic force is generated between cores 12 on the primary side and the cores 20 on the secondary side by changing over in order supply of an exciting current to a winding part 14 provided in relation to the cores 12 on the primary side, and the carrying truck 1 travels along a rail 2. At this time, brushes 40 slide on the surfaces of the cores 20 on the secondary side smoothed by filling up groove parts 21 with fillers 30. Accordingly dust accumulated in a gap between the cores on the primary side and the secondary side is removed to be cleaned.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveyance device using a linear step motor, and more particularly to a conveyance device equipped with means for removing dust accumulated on a magnetic core laid on the ground.

Generally, linear step motors have grooves or comb-shaped grooves on the opposing surfaces of the primary and secondary magnetic cores. The disadvantage is that it is difficult to use in factories that generate a lot of dust because cleaning is time-consuming.

The present invention has been made in view of the above points, and an object of the present invention is to provide a conveyance device having a function of cleaning a magnetic core surface laid on the ground.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partially cutaway perspective view of an embodiment of a conveying device according to the present invention.

10 is an article mounting table having a substantially rectangular shape;
1, a primary side magnetic core 12 having a winding portion 14, and a brush 40 constitute a transportation trolley 1.

That is, a primary magnetic core 12 is fixed to the lower surface of the article mounting table 10, and a plurality of winding portions 14 are provided in connection with this primary magnetic core 12.

The primary magnetic core 12 is placed in the groove of the primary magnetic core body.
A non-magnetic filler 30 is filled up to approximately the same height as the surface. Further, a brush 40 is provided on the longitudinal end surface of the article mounting table 10 and is supported in a downward cantilever, the tip of which has a chevron shape projecting outward with respect to the article mounting table 1. When the transport cart 1 moves, it slides on the surface of the secondary magnetic core.

On the other hand, the secondary magnetic core is laid between the two rails 2.2 in relation to the primary magnetic core and with a predetermined gap maintained therebetween. Similarly to the primary magnetic core, the secondary magnetic core also has grooves 21 in the secondary magnetic core body that are approximately the same as the surface thereof.
A non-magnetic filler 30 is filled up to a height of . Although not shown, a battery as an excitation power source, a known excitation current control device, and the like are mounted on the transport vehicle.

Thus, the primary magnetic core 12 having the winding portion 14, the secondary magnetic core 20, and the rail 2 form a linear step motor.

Next, the operation of this embodiment will be explained.

By sequentially switching the supply of excitation current to the winding portion 14 provided in relation to the primary magnetic core 12, the primary magnetic core 1
An electromagnetic force is generated between the magnetic core 2 and the secondary magnetic core 20, and the carrier 1 runs along the rail 2. At this time, the brush 40
Since the groove portion 21 slides on the smoothed surface of the secondary magnetic core 20 filled with the filler 30, it effectively removes dust and the like that would otherwise accumulate in the gap between the primary and secondary magnetic cores. It can be cleaned.

In the above embodiment, the brush has a chevron shape that protrudes outward from the carrier, but the brush is not limited to this and may have any other shape.

Additionally, an electric cleaning device is installed in conjunction with the brush to effectively remove and collect dust.

Further, in the present invention, a configuration in which a linear step motor is used to drive the transport vehicle has been described, but the present invention is not limited to this, and the present invention can also be applied when using a linear type drive device in which one side has a flat plate shape. Dust removal means can be applied.

As described above, the conveying device according to the present invention can effectively clean the surface of the magnetic core fixed on the ground of the linear step motor as a drive mechanism by running the conveying cart, so it can be used especially in dusty places. It is suitable for use in the magnetic core, and since it can also remove iron particles that have adhered to the surface of the magnetic core, it can prevent disturbance of the magnetic field at the pole tip and maintain the performance of the linear step motor at a specified level. It also has a different effect.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an embodiment of a conveying device according to the present invention. DESCRIPTION OF SYMBOLS 1... Transport trolley, 2... Rail, ] 2... Secondary side magnetic core, 20... Secondary side magnetic core, 30... Filler, 40...
··brush. Patent applicant Hitachi Mechanical Engineering Co., Ltd.

Claims (2)

[Claims] (1) In a conveying device comprising a rail, a secondary magnetic core laid between the rails, and a transportation cart, the secondary magnetic core is placed in a groove of the secondary magnetic core main body to a height approximately the same as the surface of the secondary magnetic core. The carrier is filled with a magnetic filler, and the carrier is equipped with an article mounting table, wheels, a primary magnetic core having a winding portion, and a brush, and the primary magnetic core is The groove portion of the side magnetic core body is filled with a non-magnetic filler to approximately the same height as the surface thereof, and the primary magnetic core having the winding portion, the secondary magnetic core, and the rail form a linear step motor. A conveying device comprising: (2) One end of the brush is fixed to the front and rear ends of the article mounting table, and the other end slides on the surface of the secondary magnetic core as the transport vehicle travels. A conveying device according to claim 1.