JPH04165973A - Conveyor driving motor - Google Patents

Abstract

PURPOSE:To simplify the constitution, to facilitate handling and maintenance and to reduce installation space by mounting a compressed gas levitation mechanism on the sliding face of a reluctance type linear motor for driving a belt conveyor. CONSTITUTION:When current is fed to a driving coil 3, a magnetic body 1 is magnetized to produce poles. When the poles are moved in the driving direction, the magnetic body 1 is driven resulting in apparent movement of magnetic field. Consequently, magnetism is induced in a flexible magnetic body 9 which is thereby attracted to the moving field, thus producing a force in the moving direction of the flexible magnetic body 9. Compressed air is then blown out through a blow-out hole 5 to cool the magnetic body 1 and to form a thin gas layer in a gap 11 between a stator 7 and a driver 10 thus moving the magnetic body 9 smoothly while preventing contact. When AC current is fed continuously to the driving coils 3, 4, driven body 12 of a belt conveyor to which the drivers 10 are fixed continuously can move continuously.

Description

Detailed Description of the Invention [Object of the Invention] (Field of Industrial Application) The present invention provides a conveyor drive in which a floating mechanism using compressed gas is provided on the sliding surface of a reluctance linear motor that drives a belt conveyor, pallet conveyor, etc. related to motors.

(Prior Art) Conventionally, a belt conveyor has been equipped with a driving roller that drives a driven member of the belt conveyor and a driving motor that drives the driving roller.

(Problems to be Solved by the Invention) By the way, a device for constantly maintaining a constant frictional force between the belt conveyor and the driving rollers that drive the belt conveyor is required.

In addition, it is necessary to lubricate the drive mechanism, such as a chain, to cause meandering of the belt, and to consider the position of the drive motor when installing the drive motor due to the layout of the mechanical equipment.

Note that belt conveyors utilize friction between the belt and the driving rollers, so applying tension to the heald can reduce the diameter of the rollers used at the folded portions of the belt at the leading and trailing ends of the belt conveyor. Due to limitations, it was often difficult to transfer products when conveying products across multiple belt conveyors. For this reason, there are many problems that need to be solved, such as making the roller portion edge-like or shortening the life of the belt.

SUMMARY OF THE INVENTION An object of the present invention is to provide a conveyor drive motor that has a simplified structure, is easy to handle and maintain, and requires less space for installation, in order to improve the above-mentioned problems.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a magnetic body having flexibility and having magnetic slits on its surface, and a magnetic body having flexibility and having magnetic slits on its surface. a driver consisting of a non-magnetic material with a magnetic material removed (=1) and arranged continuously in the driven direction of the driven object of the conveyor; The drive element is composed of another magnetic body, a drive coil provided on the other magnetic body, and a gas blowing hole that blows out cooling gas in the direction of the drive element and maintains a gap with the drive element. and a plurality of stators that smoothly drive the driver in the driven direction while maintaining magnetic and electrical conditions between the stators.

A conveyor drive motor is characterized by comprising:

According to another aspect of the present invention, the driven body is characterized in that the drive element receiver is provided with a part that prevents the drive element from detaching when the power is turned off.

According to still another aspect of the present invention, the driven body is
A stopper is provided to prevent the driver from coming off when the power is on and there is no gas pressure, or when the power is off even though there is gas pressure.

(Function) By adopting the conveyor drive motor of the present invention,
A drive element consisting of a magnetic material having a bending property with a magnetic slit provided on its surface and a non-magnetic material having the bending property to which the magnetic material is attached is continuously arranged in the driven direction of the driven member of the conveyor, The plurality of stators each include another magnetic body facing the surface of the magnetic body, a drive coil provided on the other magnetic body, and a gas blowing hole that blows out cooling gas in the direction of the drive element. By providing it in the direction, its construction is simplified, its handling and maintenance is easy, and its installation saves space.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

Figure 1 is a schematic explanatory diagram showing the positions of other magnetic bodies due to the magnetic poles generated in the magnetic body of a conveyor drive motor that is an embodiment of the present invention, and Figure 2 is an inverted magnetic pole of the magnetic body in Figure 1. FIG. 2 is a schematic explanatory diagram illustrating other positions of magnetic bodies according to the present invention. The conveyor drive motor is a reluctance type linear drive motor.
It mainly consists of a stator 7 and a driver (rotor) 10.

The stator 7 is composed of magnetic bodies 1 and 2, a driving coil 3.4 provided on the magnetic bodies 1.degree.2, and a gas blowing hole 5.

The drive element 10 has a plurality of other flexible magnetic bodies (flexible magnetic bodies) provided with magnetic slits 8 and a plurality of flexible magnetic bodies to which the flexible magnetic bodies 9 are fixed. It is composed of a non-magnetic material 17. Examples of this driver 10 are shown in FIGS. 3, 4, and 5. FIG. 3 shows a flexible magnetic material 9 on a thin metal plate 15 (even if it is a magnetic metal, if it is rolled thin, it can be used as a substitute for the flexible non-magnetic material 17 in the present invention). A case is shown in which the drive element 10 is made by fixing. Figure 4 shows flexible non-magnetic material 1
7 shows a case in which a ferrite 16 provided with a slit 8 is fixed as a flexible magnetic material to form a driver]0. FIG. 5 shows a case where a rubber magnetic body 21 provided with a slit 8 is fixed as a flexible magnetic body to a flexible non-magnetic body 17 to form a drive element 10.

Further, the gap 6 of the stator 7 is filled with a non-magnetic insulating material,
The slit 8 of the drive element 10 is filled with a flexible non-magnetic insulating material. By filling the gaps 6 and slits 8, the undulations of the driving surfaces between the stator 7 and the driver 10 are removed and a mutually smooth sliding surface is formed, so that the gas is compressed from the gas blowing holes 5. Gap due to gas] 1 is maintained.

When a current is passed through the drive coil 3, the magnetic body 1 is magnetized and generates a magnetic pole. By moving this magnetic pole in the driving direction,
The magnetic body 1 is also driven, and the magnetic field appears to move. With the movement of this magnetic field, the bendable magnetic body 9
Induced magnetism is generated in the moving magnetic field. Therefore, a force is generated in the direction in which the flexible magnetic body 9 moves.

If this continues, the magnetic body 9 of the drive element 10, which is the driving surface, and the magnetic body 1 of the stator 7 will come into contact with each other, so the compressed gas is blown out from the gas blowing hole 5 to cool the magnetic body 1. A thin layer of gas is created in the gap 11 between the stator 7 and the driver 10 to prevent contact and smooth the movement of the flexible magnetic body 9.

Therefore, by continuously supplying an alternating current to the driving coils 3 and 4, the driven body 12 (Fig. 4) of the belt conveyor to which the driving elements [0] are successively attached can continue to move continuously. .

In addition, as shown in FIGS. 6 and 7, when the driver 10 is arranged below the stator 7, it is necessary to prevent the driver 10 from separating from the stator 7 when the power is turned off. , L
A member 13 is provided for the letter-shaped drive element receiver.

Furthermore, as shown in FIG. 8, when the driver 10 is arranged above the stator 7, the driver 10 is prevented from coming into direct contact with the stator 7 when the power is turned off, and the gas pressure is In order to prevent the driven object 2 from being blown upward when the motor is engaged, the driver element 10 is provided inside both ends of the driven object 12, and the U-shaped driver element receiver is provided with a member '13A. .

FIG. 9 shows a schematic diagram of the present invention for driving a Stray 1 type belt conveyor. In the figure, drive elements 10 are continuously arranged on both sides of a driven body 2 of a straight 1 type belt conveyor. A required number of stators 7 are arranged above the driven body 12 and facing the driver 10 . This belt conveyor is driven by the stator 7 and the driver]0. At this time, the meandering of the driven body 12 is suppressed by the moving magnetic field of the stator 7 and the drive element ]0.

Note that ]4 is a roller or edge that guides this driven body 12.

FIG. 10 shows a schematic diagram of the present invention for driving a curved belt conveyor. In the figure, a drive element 10 is continuously disposed on the outer peripheral end of the driven body 12A of the belt conveyor, which is formed into a curved shape, and a required number of stators 7 are disposed concentrically on three sides of the drive element 10. to drive this belt conveyor. At this time, since the driven body 12A is driven while being constantly pulled toward the outer circumference from the center of the curve, it is not necessary to provide a holding member such as a tension spring to keep the tension of the belt conveyor constant. .

FIG. 11 shows still another schematic configuration diagram of the present invention for driving a belt conveyor that is centered on one longitudinal direction and radially extends on the other. In the figure, drive elements 10 are continuously disposed at both ends of a driven body 1.2B of a belt conveyor having elasticity, and a required number of stators 7 are disposed above this drive element 10. One longitudinal direction of the body 12B is centered on the other, and the other is expanded and driven radially. At this time, when the current in the magnetic body 1.2 disappears due to a power outage, etc.,
This causes the driven body 12B to move in the direction of contraction.

In order to prevent this movement, a required number of mechanical stoppers 19 are arranged around the driven body 12B, as shown in FIG. 12, for example. This mechanical stopper 19 is
When energized, the solenoid 8 opens against the spring 20, and when the power goes out, the force of the spring 20 acts in the closing direction to press the driven body 12B and prevent it from moving.

Note that this one stopper protects the driven object during a power outage]2゜12
It can also be used for the above-mentioned straight or curved belt conveyor where the movement of A is not desired.

FIG. 13 shows a further schematic diagram of the present invention for driving a spiral belt conveyor. In the figure, a driven body 12C with drive elements 10 continuously attached to both ends is disposed in a spiral manner, and a stator 7 is disposed in a spiral manner opposite to the drive element 10 to form a driven body 1.2C. It is what drives the. Driven body 12
Since C is driven in a spiral, the driven body 1.2 C
The products above will be conveyed either from the top to the bottom or from the bottom to the top. This driven body 1.2C is the stator 7
and the bendable magnetic body 9, they are sequentially fed and moved.

Therefore, a phenomenon in which an abnormal tension is applied to one part of the driven body 12C is prevented.

Note that the present invention is not limited to the above-mentioned embodiments, and may be implemented in other embodiments by making appropriate design changes. For example, although a belt conveyor will be described in this embodiment, it goes without saying that the present invention can also be applied to a pallet conveyor or the like.

[Effects of the Invention] As is already clear from the above description, the conveyor drive motor of the present invention is a reluctance type linear drive motor, and is configured to be driven by suction force by a combination of a stator and a driver. As a result, there is no guide mechanism during driving, the meandering of the driven body is prevented by the suction between the stator and the driver, and there is no need for lubrication due to the gas flotation means that maintains the gap using gas pressure. In addition, the stator is cooled from within, which has a high cooling effect, and electrically controlling the current of the drive coil eliminates the need for a transmission or reducer, and no tension is required to drive the driven body. The diameter of the rollers at the folded parts at the front and rear ends of the drive body can be reduced, reducing problems when transferring products, and since a large number of stators are installed, it is easy to respond to motor failures and equipment management is easy. It has certain effects.

[Brief explanation of the drawing]

Figure 1 is a schematic explanatory diagram showing the positions of other magnetic bodies due to the magnetic poles generated in the magnetic body of a conveyor drive motor that is an embodiment of the present invention, and Figure 2 is an inverted magnetic pole of the magnetic body in Figure 1. Figures 3 to 5 are configuration diagrams of the driver in Figure 1, Figure 6 is a state diagram showing the installation of the belt conveyor to the driven body, and Figure 7 is a diagram showing the position of other magnetic bodies. is an enlarged view of the main part of FIG. 6, FIG. 8 is a state diagram showing other attachments of the belt conveyor to a driven body, FIG. 9 is a schematic configuration diagram of the present invention for driving a straight type belt conveyor, and FIG. 10 11 is a schematic configuration diagram of the present invention for driving a curved belt conveyor.
12 is a schematic configuration diagram of a mechanical stopper, and FIG. 13 is a schematic configuration diagram of a mechanical stopper.
The figure is still another schematic configuration diagram of the present invention for driving a spiral belt conveyor. ], 2...Magnetic material 3, 4. Drive coil 5...
Gas blowout hole 7...Stator 6/Gap
8...Slit 9...Flexible magnetic material 10...
Drive element 11...Gap 1.2, 1.2A, 12B, 12C...Driven object 1.3
．． 13A Driven bowl support is part 15... thin metal plate 16... ferrite 17...
・1 flexible non-magnetic material ・Mechanical stopper 20 ・Spring 21 ・・
・Rubber Magnetic Substance Agent Patent Attorney Hide Miyoshi 5th day for Japanese procedure amendment 1990 Kozue 2

Claims (1)

[Claims] 1) A magnetic body (9) that has flexibility and has a magnetic slit (8) on its surface, and a non-magnetic body that has flexibility and has the magnetic body (9) attached thereto. (17); and a driver (10) that is continuously arranged in the driven direction of the driven body (12) of the conveyor; A gap between the other magnetic bodies (1, 2), the drive coils (3, 4) provided on the other magnetic bodies, and the driver (10) by blowing out cooling gas in the direction of the driver. (11)
and a gas blowing hole (5) for holding the driver element (
10); and a plurality of stators (7) that smoothly drive the drive element (10) in the driven direction while maintaining magnetic and electrical conditions between the conveyor drive and the drive element (10). motor. 2) In the description of claim 1, the driven body (
12) A conveyor drive motor characterized by being provided with a driver receiving member (13) that prevents the driver (10) from coming off when the power is turned off. 3) In the description of claim 1, the driven body (
12) is a conveyor drive characterized by being provided with a stopper (19) that prevents the driver (10) from detaching when the power is on and there is no gas pressure, or when there is gas pressure and the power is off, etc. motor.