JPS62118704A - Conveyor - Google Patents

Abstract

PURPOSE:To obtain a conveyor which has small traveling resistance, and generates no dust and no noise by employing a suspension type for a carriage and levitating by magnetic fluid. CONSTITUTION:Magnetic fluid 2 generates a phenomenon of increasing apparent specific weight of magnetic fluid by the influence of a magnetic field generated from a permanent magnet 3 disposed on a conveying frame 5, generates a levitating force for the magnet 3, legs 8 and the frame 5 to levitate the frame 5 from a conveying passage 1. Thus, a carriage 6 disposed on the frame 5 is levitated from the passage 1. In this case, the bottom of the magnet 3 and the upper surface of the passage 1 are not contacted except the fluid 2 to remarkably reduce a traveling resistance. When the frame 5 is supported by a moving vehicle, the frame 5 can be fed at low loss as the vehicle moves.

Description

DETAILED DESCRIPTION OF THE INVENTION 1. The present invention involves suspending a conveyance table that supports or places an object to be conveyed, and transporting the object while floating it with a magnetic fluid. ! Regarding the i-sending device.

This type of suspended transport device includes, for example, a suspended trolley conveyor, but fine dust is generated from rotating and sliding parts during operation. Therefore, there is a problem that it cannot be used in a clean room or the like where dust and the like are avoided. 3(A), (B), and (C) which move while supporting supports such as electric wires, pressure oil piping, or air piping for supplying motive power and electric signals to the moving body. There is a hanger mechanism as shown in the figure below.

In FIG. 3(A), 11 is a horizontally stretched messenger wire, 12 is a traveling wheel that moves on the messenger wire, 13 is a frame that pivotally supports the traveling wheel 12 on a shaft 15, and 14 is a frame. τ-shaped electric wire from 13,
This is a hanger that supports supports such as pressure oil piping or air piping. As the running wheel 12 moves on the mensenger wire 12, the hanger 14 suspended from the frame 13 moves, so supports such as electric wires, pressure oil piping, or air piping can be moved.

In FIG. 3(B), 21 is a horizontally arranged guide rail, 22 is a running wheel that moves at two locations on the upper surface of the lower part of the guide rail 21, 23 is a frame that pivotally supports the running wheel 22 on a shaft 25, A hanger 24 hangs from the frame 23 and supports objects such as electric wires, pressure oil piping, or air piping. As the traveling wheel 22 moves on the upper surface of the lower part of the guide rail 21, the hanger 24 hanging from the frame 23 moves, so that supports such as electric wires, pressure oil piping, or air piping can be moved.

In FIG. 3(C), 31 is a horizontally arranged guide rail in the form of an open groove, 32 is a traveling wheel that moves at two locations on the upper surface of the lower part of the guide rail, and 33 is a traveling wheel 32 that is pivotally supported by a shaft 35. The frame 34 is a hanger that hangs from the frame 33 and supports objects such as electric wires, pressure oil piping, or air piping. As the running wheel 32 moves on the upper surface of the lower part of the guide rail, the hanger 34 suspended from the frame 33 moves, so that supports such as electric wires, pressure oil piping, or air piping can be moved.

However, in either case, the running wheel moves due to rolling friction with the measuring wire or guide rail, etc., which causes noise.■ Fine dust is generated on the friction surface.Because it is rolling friction, the running resistance is relatively low. It had drawbacks such as being large.

Therefore, there is a problem in that this type of transfer device cannot be used in an environment where dust is particularly avoided, such as in a clean room.

(This is taken as J.U.) The present invention uses a suspended type conveyor table to support or place the conveyed object, and levitates it using magnetic fluid, resulting in extremely low running resistance, no dust generation, and no noise generation. The purpose of the present invention is to provide a conveying device that prevents

The present invention provides a conveyor path and an II suspended on the conveyor path.
A conveyance system comprising a conveyance platform, a magnetic fluid disposed between the conveyance path and the conveyance platform, and a permanent magnet provided on the conveyance platform, wherein the conveyance platform is floated from the conveyance path by the magnetic fluid. It is a device.

Example Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a front sectional view showing a first embodiment of a conveying device according to the present invention, and FIG. 2 is a sectional view taken along line A-A' in FIG.

Reference numeral 1 denotes a conveyance path formed of a non-magnetic and non-conductive material supported by a support frame 4, which will be described later, and in this embodiment, two sets of conveyance paths are provided on the left and right in the direction perpendicular to the traveling direction.

Reference numeral 5 denotes a transport frame, which includes a transport table 6 suspended from the lower part of the transport frame 5 on which an object to be transported (not shown) is supported or placed, and permanent magnets 3 disposed at positions corresponding to the left and right transport paths 1. It is composed of a leg portion 8 that holds the permanent magnet 3 on the lower end surface. The conveyor table 6 is arranged at the lower part of the conveyor frame 5. A case is shown in which the object to be transported is supported in a space inside the transport table 6.

Reference numeral 2 denotes a magnetic fluid, which is arranged within the conveyance path 1 so that the magnetic field of the permanent magnet 3 acts on it.

4 is a support frame that supports the conveyance path 1;
It also serves as a cover.

The magnetic fluid 2 is a well-known colloidal solution in which the surface of magnetic fine particles such as ferrite is coated with long-chain unsaturated fatty acids and dispersed in a solution using a surfactant.

Next, the operation of this embodiment will be explained. In FIGS. 1 and 2, the magnetic fluid 2 undergoes a phenomenon in which the apparent specific gravity of the magnetic fluid increases due to the influence of the magnetic field generated by the permanent magnet 3 disposed on the general feed frame 5, and the permanent magnet 3 , a floating blade is generated on the legs 8 and the transport frame 5, the transport frame 5 floats above the transport path 1, and the transport platform 6 disposed on the transport frame 5 floats above the transport path l. .

By setting the strength of the magnetic field of the permanent magnet 3 to a predetermined value, it is possible to obtain a predetermined buoyancy corresponding to the transport frame 5. In this case, the bottom surface of the permanent magnet 3 and the top surface of the conveyance path 1 are completely non-contact except for the magnetic fluid 2, resulting in a state where running resistance is extremely low. Therefore, if the transport frame 5 is supported by a moving body (not shown), the transport frame 5 can be moved in the direction of the arrow shown in FIG. 2 with low loss, following the movement of the moving body (not shown). Therefore, the general carriage 6 suspended from the transport frame 5 is transferred.

According to this embodiment, it is possible to realize a conveyance device that has extremely low running resistance, does not generate dust, and does not emit noise without substantially increasing the burden of driving force for conveyance on the movable body. Furthermore, since there are two sets of conveyance paths, the objects to be transported can be stably conveyed.

FIG. 4 shows another embodiment of the shape of the conveyor table 6 in the case of the embodiment shown in FIG. 1, and other than this, the shape is the same as that shown in FIG. 1. A case is shown in which an object to be transported (not shown) is supported or placed on a support section 8 at the lower part of the transport table 6.

FIG. 5 is a sectional front view showing a second embodiment of the conveying device according to the present invention.

Reference numeral 1 denotes a conveyance path made of non-magnetic and non-conductive material and supported by a frame (not shown). Reference numeral 5 designates a transport frame, which includes a transport table 6 hanging down from the lower part of the transport frame 5 on which an object to be transported (not shown) is supported or placed, and a permanent magnet 3 disposed at a position corresponding to the transport path 1. , and a leg portion 8 that holds the permanent magnet 3 on the lower end surface. The difference between this embodiment and the first embodiment is that, unlike the first embodiment, in which two sets of conveyance paths 1 were provided on the left and right in the direction perpendicular to the traveling direction, in this embodiment, one general conveyance path 1 was provided. In this embodiment, the transport frame 5 is arranged to straddle the transport path 1.

The configuration other than the above is the same as the first embodiment.

In FIG. 5, the same parts as in FIG. 1 are designated by the same reference numerals.

The operation in this embodiment is similar to that in the first embodiment, and the conveyor table 6 can be transferred.

In this embodiment, the conveyance path 1 is set as one set and has a convenient structure, and has the same effect as the previous embodiment.

Further, FIG. 6 shows another example of the shape of the conveyance table 6 in the case of the second embodiment shown in FIG. 8 indicates the case where it is supported or placed.

In addition, although the conveyance path and the permanent magnet were explained as one set or two sets in the embodiment, the present invention is not limited to this, and it is of course possible to use three or more sets as well.

FIG. 7 is a front sectional view showing a third embodiment of the conveying device according to the present invention, and FIG. 8 is a sectional view taken along the line AA in FIG.

This embodiment is different from the first and second embodiments because, in the first and second embodiments, the conveyance device of the present invention has a drive source, and the chair conveyance frame 5 is a movable body (not shown). The transport frame 5 is supported by a moving body (not shown) and is transported by following the movement of a moving body (not shown), whereas in this embodiment, the transport device itself has a driving source.

This embodiment differs from the first embodiment in that linear motor stators 40 are disposed on the left and right sides of the lower surface of the support frame 4 at appropriate predetermined positions with respect to the traveling direction, and the linear motors on the legs 5a of the transport frame 5 are The reaction plate 41 is disposed at a portion facing the stator 40. The reaction plate 41 is made of a conductive material, such as an aluminum or copper plate, so that the linear motor stator 40 generates thrust as a linear motor.

The configuration other than the above is the same as the first embodiment.

In FIG. 7, the same parts as in FIG. 1 are designated by the same reference numerals.

To explain the operation of this embodiment, the transport frame 5 floats in the same way as explained in the first embodiment, and the running resistance is brought to a state where the running resistance is extremely small. Here, linear motor stator 4
When 0 is excited, the reaction plate 41 obtains thrust. Therefore, the transport frame 5 is transported in the direction indicated by the arrow in FIG. Therefore, the carrier 6 suspended from the carrier frame 5 is transferred.

Therefore, since the running resistance is extremely low, the capacity of the near motor can be reduced if necessary, and a dust-free conveying device can be realized.

FIG. 9 shows another embodiment of the shape of the conveyor table 6 in the case of the embodiment shown in FIG. A case is shown in which the device is supported or placed on the lower part of the conveyor table 6 by the support section 8.

FIG. 10 is a front sectional view showing a fourth embodiment of the conveying device according to the present invention. This embodiment is different from the second embodiment shown in FIG. The reaction plate 41 is disposed at a portion facing the stator 40.

The configuration other than the above is the same as that of the second embodiment.

To explain the operation of this embodiment, the transport frame 5 floats in the same way as explained in the second embodiment, and is always in a state where running resistance is small. Here, when the linear motor stator 40 is excited, the reaction plate 41 obtains thrust. Therefore, the transport frame 5 is transported in the traveling direction, and the transport table 6 suspended from the transport frame 5 is transported.

In this embodiment, the conveyance path 1 can be set as one set, and the linear motor stator 40 can also be set as one set, so that the apparatus can have a simple configuration and has the same effects as the third embodiment.

Further, FIG. 11 shows another example of the shape of the conveyance table 6 in the case of the fourth example shown in FIG. This shows the case where it is supported or placed.

Note that the means for transporting the one-leg transport frame, that is, the transport platform, is not limited to the above-mentioned embodiments, and may, for example, be such that the transport frame is pulled by a wire rope or the like, and the wire rope is operated by a drive source to transport the transport frame. It is also possible to transfer the carrier by using

The present invention utilizes magnetic fluid to levitate a π-shaped conveyor platform that supports or places the conveyed object, which allows for easy conveyance with very low running resistance, and also generates no dust and is noisy. It has the effect of preventing the occurrence of

For this reason, it is a very effective conveying device, especially in clean rooms where dust is a concern.

[Brief explanation of drawings]

FIG. 1 is a front sectional view showing a first embodiment of a conveying device according to the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. 4 is a front sectional view showing another embodiment of the conveyance table in the case of the first embodiment, and FIG. 5 is a front sectional view showing a second embodiment of the manufacturing and feeding device according to the present invention.
FIG. 6 is a front sectional view showing another embodiment of the conveyance table in the case of the second embodiment, FIG. 7 is a front sectional view showing the third embodiment of the conveyance device according to the present invention, and FIG. is a sectional view taken along the line A-A in FIG. 7, FIG. 9 is a front sectional view showing another embodiment of the conveyance table in the case of the third embodiment, and FIG. FIG. 11 is a front sectional view showing another embodiment of the conveyance table in the case of the fourth embodiment. DESCRIPTION OF SYMBOLS 1... Conveyance path, 2... Magnetic fluid, 3... Permanent magnet, 4... Support frame, 5... Conveyance frame, 6...
...Transportation platform, 11...Metsenger wire, 12.2
2.32... Traveling wheel, 13.23.33...
Frame, 14.24.34...Hanger, 15.2
5.35...Axis, 21.31...Guide rail, 4
0... Linear motor stator, 41... Reaction plate. Patent Applicant Hitachi Kiden Kogyo Co., Ltd. Agent Patent Attorney Takashi Ohnishi Jikan 11-1 Sw2I-1 (A) (B) (C) Fu, > 3 :)j J Figure 7, No. 8-1

Claims (1)

[Claims] (1) a conveyance path, a conveyance table suspended from the conveyance path, and a magnetic fluid disposed between the conveyance path and the conveyance table;
1. A conveyance device comprising a permanent magnet provided on a conveyance table, the conveyance table being levitated from a conveyance path by a magnetic fluid.