JPS6062802A - Propulsive device of article conveying system - Google Patents

Abstract

PURPOSE:To obtain a propulsive device which has high speed, energy-saving, space-saving and low noise by detecting the position of a conveying vehicle by a guide and a guided mechanism, and switching the direction of a current of a propulsive electromagnet of the vehicle in response to a position signal. CONSTITUTION:A propulsive device 1 of a conveying system has an electromagnet 3 mounted on the flower of a conveying vehicle 2, guides 6, a permanent magnet 7 disposed at N-poles and S-poles alternately oppositely to the electromagnet 3 of the vehicle side between the guides 6, and conductive wheels 8 for supporting the vehicle 2 and for collecting the current to the electromagnet 3. The guides 6 have conductive guides 4 and guide insulating strips S. The position of the vehicle 2 is detected by the guides 6 and the wheels 8, and the polarity of the electromagnet 3 is altered in response to the position signal.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to a propulsion device for an article conveyance system, which is used, for example, as a propulsion means for a conveyance vehicle of a document writing system.

[Prior art and its odes]

Conventionally, for example, a belt conveyor, air, or a linear induction motor is often used as a means for conveying documents in a conveyance system. However, with the belt conveyor method, ■The speed is slow; ■The entire item is sent at the same speed. Also, the pneumatic type produces a lot of noise.

■Compared to the capacity of the air pump, the amount of documents transported by one system is small. Also, in the linear induction motor system.

■-The entire track becomes larger because a second winding is required.

■-A large amount of conductor wire is required for the next winding.

There were drawbacks such as.

[Purpose of the invention]

An article conveyance system must convey documents to each destination within a building in a short time, quietly, and at low cost. For this reason, it has been desired that the conveyance means be fast, energy saving, space saving, and low noise.

The present invention improves the drawbacks of the conventional devices described above, and aims to provide a high-speed, energy-saving, space-saving, and low-noise propulsion device at a low cost.

[Summary of the invention]

This invention provides a method for supplying current to the electromagnet of the guided vehicle from a DC power supply through a guide on the track and a guided mechanism of the guided vehicle that contacts the guide, to an electromagnet of the guided vehicle. In addition, the electromagnet is provided with a function to detect the position of the guided vehicle, and supplies current to the electromagnet of the guided vehicle determined by this position detection function in an alternating manner of N[jS poles along the trajectory. This is a propulsion device for an article conveyance system that is configured to generate thrust to a stator composed of permanent magnets or electromagnets arranged in a row.

The present invention (according to the present invention, since the current sent to the electromagnet of the transport vehicle is DC, the power source is a single-phase AC) 00Vt-
By using an existing DC power source, it is possible to supply the necessary power for this device instead of a normal household outlet.

In addition, since the polarity of the individual electromagnets or permanent magnets that make up the stator placed along the orbit is always constant,
Wiring on the track side can be done very easily.

Furthermore, according to the present invention, when one permanent magnet is used in the track-side stator, the only electromagnet that is excited is the electromagnet of the conveyor vehicle, which makes it suitable for propulsion devices such as linear induction motors that excite many electromagnetic coils. Comparatively, you can save electricity.

In addition, according to the present invention, since the mechanism is very simple, the volume and weight per unit length of the propulsion track can be significantly reduced compared to conventional systems such as linear taxi motors. Is possible.

[Embodiments of the invention]

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

@1 In Figure 1, a propulsion device of a document transport system according to an embodiment of the present invention is indicated as a whole by 1. The propulsion device 1 includes a guide 6, which is made up of an electromagnet 3, a conductive guide 4, and a guide insulating band S, which are installed under the floor of a transport vehicle 20, and between the guides, N and S poles are arranged alternately on the transport vehicle side as a stator. The main components are a permanent magnet 7 arranged to face the 'R electromagnet, a conductive wheel 8 for supporting the transport vehicle 2 and collecting current to the electromagnet 3.

In addition, when the conveyance vehicle 2 moves along the propulsion track of the conveyance system under the thrust of the propulsion track 3 and the permanent magnet 7 attached as a stator, the bending electromagnet 3
FIG. 2 shows a schematic state and circuit of the guide 6 and conductive wheels 8 for detecting the polarity of the permanent magnet 7 and the position of the carrier 2 and changing the polarity of the electromagnet 3.

The positional relationship among the conductive guide 4, guide insulating band 5, and permanent magnet 7 in this embodiment is as shown in FIG.
The center line of the electromagnet 3 of the transport vehicle 2 is.

The conductive wheels 8 of the carrier are positioned on the guide insulating strip 5 when they overlap the center line of each permanent magnet 7; otherwise, the conductive wheels 8 are placed on the conductive guide 4. It has been decided that it will be located in

In this embodiment, the conductive wheels 8 and 30 sets of electromagnets are arranged at a distance of 300 m from the ball pitch of the stator so that even if the conductive wheels 8 of the transport vehicle 2 stop on the guide insulating band 5, they can be restarted. Two sets are arranged separated by /2.

Further, by using the reverse switch 9 to reverse the direction of the current flowing through the electromagnet 3, the direction of the propulsive force applied to the transport vehicle 2 can be reversed.

[Other embodiments of the invention]

It should be noted that the present invention is not limited to the above-mentioned embodiments, and can be implemented with various modifications without changing the gist.

For example, in the above embodiment, a permanent magnet was used as the stator, but this was necessary due to physical reasons such as a strong permanent magnet being unsuitable in terms of cost or requiring a particularly large propulsion force. In such a case, there is no problem in using an electromagnet by wiring as shown in FIGS. 3 and 4 or by other means.

Furthermore, in the above embodiment, the permanent magnets on the stator side and the electromagnets on the transport vehicle side are arranged in - rows, respectively, but this is because the permanent magnets or electromagnets on the stator side installed in the propulsion device The number of rows of electromagnets on the vehicle side is not limited, and the number of each row can be changed as necessary depending on conditions such as installation space and thrust.

Furthermore, the above embodiments do not limit the number of transport vehicles that travel on the track of the document transport system.

In addition, the above embodiments do not define the section or position in which the propulsion device of the present invention is attached to the track, but rather the propulsion device of the present invention may be attached to the track of the document conveying system over the entire length or one or more sections. You can install the device.

Further, in the above embodiment, the permanent magnet 7 and the electromagnet 3 have a rectangular shape, but they may have any shape, such as a circle.

Furthermore, the DC power supply used in the above embodiments may be of any type or means as long as its output is DC.

In addition, the variable resistor and reversal switch used in the above embodiments are not limited in their mounting positions, and can be mounted at appropriate locations as necessary.

Furthermore, although the number of wheels attached to the transport vehicle in the above embodiment is four, this does not limit the number of wheels;
Additional units can be installed as needed to improve current collection, reduce supporting weight, etc.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a propulsion device for a document conveyance system according to the present invention, and FIG. 2 shows an embodiment of the propulsion device for a document conveyance system according to the present invention. FIGS. 3 and 4 are explanatory diagrams showing the positional relationships between the Wt magnets, wheels, guides, and stators, as well as explaining the wiring of the conductive guides, and are diagrams illustrating the implementation of the propulsion device of the document conveyance system according to the present invention. FIG. 2 is an explanatory diagram illustrating an example, showing the positional relationship between the guide and the stator, and explaining the state of wiring of the conductive guide. 1 Transport device of document transport system, 3 transport vehicle, 3...
Electromagnet, 4. Conductive guide, 5. Guide insulating band, 6.
... Guide, 7... Permanent magnet, 8... Conductive wheel, 9
・・・Reverse switch, 10・Guide support mechanism, 11・
・Permanent magnet embedded board, 12 ・Variable resistor, 13...
DC power supply, 14. Stator side electromagnet

Claims (1)

[Claims] Promoting an article conveyance system including, as system components, a track composed of a plurality of sets of guides and a support mechanism for the guides, and a conveyance vehicle having a guided mechanism for traveling along the track. In the device, a part or all of the guide and guided mechanism has a position detection function of the guided vehicle by itself, and this position detection function allows the direction of the current of the propulsion electromagnet installed on the guided vehicle to be detected by the guided vehicle. For a stator consisting of propulsion electromagnets or permanent magnets arranged alternately with 8 NvA poles along the orbit,