JP2000053251A - Carrier using spherical magnet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrier using spherical magnets which smoothly carry a material even in a curve having small radius and shows no fluctuation in the magnetic force in the curve. SOLUTION: A carrier is so constituted that a plurality of spherical magnets 2 are arranged inside a nonmagnetic carrier pipe l having a circular section and an air pressure or a hydraulic drive means 5 for moving the spherical magnets 2 is provided. A hard rubber or fluororesin coating body 3 is provided in the outer circumference of each spherical magnet 2 or the spherical magnets 2 are stored in a hose-shaped storage body into a line, and silicon liquid may be filled inside the storage body so as to be sealed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device capable of moving a curve using a spherical magnet, and more particularly, to a method of cutting iron chips mixed or deposited in cutting fluid or cutting oil discharged from a machine tool in a liquid. The present invention relates to a transfer device using a spherical magnet that can be used for a transfer device for iron chips that automatically carries out and collects while adsorbing from a workpiece, or a transfer device for a component such as a machined part or an assembled part.

[0002]

2. Description of the Related Art Conventionally, as a main structure of a transfer device capable of moving in a curved line using a magnet, there is a transfer device as shown in FIG. This structure consists of a disc-shaped magnet (2 ') inside a non-magnetic transport pipe (1) having a circular cross section.
Are provided, and a presser plate and packing are provided on both sides thereof to form a piston. In the transfer device, the disk-shaped magnet (2 ') inside the transfer pipe (1) is moved by driving means (5) using air pressure, and the transfer pipe (1) is moved by the magnetic force of the disk-shaped magnet (2'). It moves a carrier provided outside of the machine and conveys it three-dimensionally, and is used for taking out and supplying parts from a processing machine or conveying parts in an assembly line. This transfer device is commercially available under the product name "Shuttle Bar" of CKD Corporation. still,
Conventionally, there has been no transfer device capable of moving a curve in an iron chip generated from a machine tool.

[0003]

However, in the transfer device in which a plurality of the disc-shaped magnets (2 ') are arranged, the minimum radius (R) of the transfer pipe (1) is 500 mm.
As described above, since the radius (R) is relatively large, the arrangement of the transport pipe (1) is limited, and there are cases where the place cannot be used effectively. When the disc-shaped magnet (2 ') bends the curved portion of the transport pipe (1), each disc-shaped magnet (2') is opened on the outside and is brought into close contact with the inside as shown in the figure. Through the bend. For this reason, the magnetic force applied to the outer circumference of the transport pipe (1) is weakened on the outside, and different between the outside and the inside. Therefore, even if a transfer device in which a plurality of the disc-shaped magnets (2 ') are arranged is used for transferring iron chips, a considerable amount of chips may drop off at the curved portion of the transfer pipe (1). There is a problem that there is a risk that the

According to the present invention, even when the radius of the curved portion is small, the
It is an object of the present invention to provide a transfer device using a spherical magnet which can be transferred smoothly and has little variation in magnetic force in a curved portion.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. That is, a plurality of spherical magnets are arranged inside a non-magnetic conveying pipe having a circular cross section. The driving mechanism for moving the magnet is provided. In addition, the outer periphery of each spherical magnet may be provided with a hard rubber or fluorocarbon resin coating,
Alternatively, a plurality of the above-mentioned spherical magnets may be arranged, arranged in a line, and sealed and housed in a hose-shaped housing, and the interior of the housing may be filled with a silicon liquid. It is preferable to use air drive or hydraulic drive as the driving means. In addition, the present inventor focused on the fact that the spherical magnets were strongly attracted to each other and arranged in a line and focused on the fact that each spherical magnet was independent,
It was confirmed that the spherical magnets individually rotated (rotated) and had a small turn.

[0006]

FIG. 1 is a diagram showing an embodiment of the present invention. (1) is a non-magnetic transfer pipe having a circular cross section, and a stainless steel pipe, a brass pipe, or the like is used as a material of the transfer pipe (1).
(2) is a plurality of spherical magnets arranged inside the transport pipe (1), and a commercially available spherical magnet may be used as the spherical magnet (2). (3) is a coating provided in a thickness of 1 to 2 mm on the entire outer periphery of the spherical magnet (2). As the coating (3), a fluororesin having good wear resistance or a hard resin having good airtightness is used. Cover with rubber etc. When arranging a plurality of spherical magnets (2), as shown in FIG. 2, a spherical magnet (2) provided with a fluororesin coating (3) is disposed at the center, and a hard rubber coating is further provided. The spherical magnet (2) provided with (3) as shown by oblique lines in the figure may be arranged at both ends. Also, spherical magnet (2)
When the cover (3) is provided, the cover (3) is finished in a shape that can be sealed according to the inner diameter of the transport pipe (1).
The driving means (5) is provided for moving the spherical magnet (2). The driving means (5) is driven by air or hydraulic by controlling an electromagnetic valve or the like.

FIG. 3 is a view showing another embodiment of the present invention. Compared with the above embodiment, a plurality of spherical magnets (2) are combined into one block, and the spherical magnet (2) are arranged in a line and are housed in a transport pipe (1) hermetically sealed inside a bendable hose-shaped housing (4), without the covering (3), And other parts are the same. The storage body (4)
Is composed of a rubber hose (41) and silicone rubber stoppers (42) attached to both ends thereof. At this time, the storage body (4)
The length of the spherical magnet (2) accommodated therein is given an allowance so that it can move somewhat freely, and the spherical magnet (2) can be moved along the external transport pipe (1). The space between the spherical magnets (2) is filled with the silicon liquid by filling the inside of the container (4) with the silicon liquid, and the spherical magnet (2) can smoothly move and also functions to prevent rust. It is good.

Next, the operation of the present invention will be described. First, the plurality of spherical magnets (2) arranged inside the transport pipe (1) are arranged side by side in a row by strongly attracting adjacent ones, and are advanced and retracted by the driving means (5). . When the driving means (5) operates, the plurality of spherical magnets (2) are applied with air pressure or hydraulic pressure, and the spherical magnet (2) moves. Next, the spherical magnet (2) is transferred to the transport pipe (1).
When passing through a curved part, each spherical magnet (2) moves in the longitudinal direction and moves into a curved part when it comes to the curved part. Since it moves and passes through the curved portion while rotating as indicated by the arrow in the drawing, even a small curved portion can easily pass through the inside of the transport pipe (1). At this time, the adjacent spherical magnets (2) are always in a state of point contact, and even in the curved portion, the same state as the linear portion can be secured without opening a gap outside as in the conventional product. It is stable with little change in magnetic force. In addition, the spherical magnet (2) has a partially strong magnetic force that can be attracted to the pipe outside of the conventional disk-shaped magnet (2 '), and particularly fine chips, abrasive powder, etc. are very good. ). It is considered that the reason for this is that the magnetic force concentrated on the top of the sphere acts to cause a phenomenon similar to that of the yoke. Hard rubber or fluororesin is wound around the entire circumference of the spherical magnet (2), and each of the spherical magnets (2) serves as an O-ring, so that air is applied even when pressure is applied. It has the advantage that it is effective and can be used for a long time, because it is effective without leakage, and the portion that hits the inner surface of the transport pipe (1) moves constantly and changes. The movement of the spherical magnet (2) is further improved by increasing the finishing accuracy of the coating (3) covering the outer periphery of the spherical magnet (2) and improving the finishing accuracy of the inner peripheral surface of the transport pipe (1). Smooth
It can be done without any problems. Therefore, the inner peripheral surface of the transport pipe (1) may be coated with a fluororesin.

FIGS. 4 and 5 are diagrams showing an outline of an embodiment in which the use of the present invention is for cutting chips, and the embodiment will be described with reference to FIGS. The transport pipe (1) is bent at the bottom or an appropriate position inside the tank (6) for cutting fluid and is connected to a control box (7) for controlling air. still,
At this time, a control box (7) in which oil is used instead of air to control the oil may be used. A plurality of spherical magnets (2) arranged inside the transport pipe (1) are provided so as to be able to reciprocate. When the spherical magnet (2) passes through the inside of the tank (6) for cutting fluid or polishing oil, the chips mixed and deposited or discharged from the machine tool together with the cutting oil or polishing oil are mixed with the spherical magnet. It is adsorbed by (2) and transported to the outside of the tank (6). Further, a stopper (8) for dropping chips when the spherical magnet (2) reaches the control box (7) near the transport box (7) is provided on the outer periphery of the transport pipe (1). Below the stopper (8), a chip storage container (9) for storing dropped chips is provided. Also, air hoses (1) are provided at both ends of the transport pipe (1).
0) is connected. The shape of the transfer pipe (1) provided inside the tank (6) is circular in FIG.
Is not limited to a U-shape, for example, an L-shape,
An upright type or a spiral type may be used.

The operation in the case where the present invention is applied to the iron chip conveying device as described above will be described. First, pressurized air is pressure-fed to an air hose (10) connected to the lower end of the transport pipe (1), and is sent into the transport pipe (1). The spherical magnet (2) accommodated therein moves and moves upward as a whole, and fine particles or adhesives of cutting chips or accumulated grinding stones are formed on the outer peripheral surface of the transport pipe (1) on which the spherical magnet (2) is disposed. The contaminants such as are adsorbed together with the deposited chips and are conveyed upward following the movement of the spherical magnet (2). When the movement of the spherical magnet (2) passes through the stopper (8),
Chips are conveyed along the outer peripheral surface of the conveying pipe (1), but while the chip is stopped by the stopper (8), the spherical magnet (2) passes therethrough. Since the magnetic force is lost, the chips are scraped by the stopper (8) and fall down, and the chips are stored in the chip storage container (9). After the spherical magnet (2) passes through the stopper (8) and reaches the upper end of the transport pipe (1), the direction of the pressurized air is switched by control of the control box (7) to change the spherical magnet (2). ) Is returned to the original position on the tank (6) side. By repeating this operation and automatically reciprocating the spherical magnet (2), the chip conveyance can be automated. The radius (R) is 30mm
In the curved part of the transfer pipe (1), the outer diameter is
When the chips were transported using a spherical magnet (2) having a magnetizing force of about 200 Gauss, the spherical magnets (2) were easily moved, and the chips could be transported without falling off.

FIG. 7 is a view showing an outline of an embodiment in which the use of the present invention is for parts, and the embodiment will be described with reference to FIG.
In this case, as shown in FIG. 6, a carrier (11) is arranged on the outer periphery of the transport pipe (1) corresponding to the plurality of spherical magnets (2) arranged inside the transport pipe (1), The carrier (11) has a chuck (1
2) is installed. The carrier (11) has a guide ball (11a) corresponding to the spherical magnet (2) and arranged so as to be smaller and more turnable than the spherical magnet (2), and a cover surrounding the guide ball (11a). −
(11b) and a carrier block (11c) fixed to the cover (11b). The transport pipe (1) is previously piped in a transport path shape corresponding to the component transport, and a control box (7) is provided with an air at one end of the transport pipe (1) as in the case of the chips. And a hose (10) for air is also connected to the other end of the transport pipe (1). Further, a plurality of spherical magnets (2) arranged inside the transport pipe (1) are arranged so as to be able to reciprocate. Next, the operation when the present invention is used for a component conveying device will be described. First, an air hose (10) connected to the other end of the transport pipe (1).
When pressurized air is pressure-fed into the transfer pipe (1), the spherical magnet (2) accommodated in the transfer pipe (1) moves, and the predetermined magnet inside the transfer pipe (1) is moved. Move to the position. At this time, the carrier (11) is attracted and conveyed by the magnetic force of the spherical magnet (2). Therefore,
The chuck (12) attached to the carrier (11) is conveyed following the spherical magnet (2). When transporting, the parts are held in advance by the chuck (12), and pressurized air is sent from one end of the transport pipe (1), and the spherical magnet (2) accommodated in the transport pipe (1) moves. The parts attached to the chuck (12) are also transported. In this transfer, the spherical magnet (2) determines the transfer speed and position under the control of the control box (7), and opens and closes the chuck (12) with another device (not shown) to take out and supply the parts. .

[0012]

The present invention having the above-described structure has the following effects.

[0013] A plurality of spherical magnets (2) are arranged inside a non-magnetic transport pipe (1) having a circular cross section as in claim 1, and a driving means (5) for moving the spherical magnet (2). With the provision of 5), the spherical magnets (2) individually pass through the curved portion while rotating.
Even small curved parts can be smoothly transported. In addition, the spherical magnet (2) is not separated from the curved portion, and the magnetic force in the same state as the linear portion is secured without being separated, so that the transfer device becomes stable. In addition, the structure of the product of the present invention is simple, small, lightweight, and can be operated at high speed. Therefore, if the present invention is applied to a device for transporting steel chips, it is possible to move a curve, so that the transport pipe (1) is piped to the bottom of a tank for cutting fluid or polishing fluid (6) and a spherical magnet (2) Reciprocating makes it possible to automatically and surely carry out and collect only the chips while separating from the cutting fluid or the polishing fluid, and to circulate the polishing fluid tank (6) only the iron particles deposited on the bottom of the Rather, contaminants such as grindstone fine particles or adhesive can be collected together with iron particles and automatically recovered from the liquid. If the reciprocating movement of the spherical magnet (2) is performed periodically, chips do not stay or accumulate more than necessary, and chip processing and cleaning of the tank (6) can be labor-saving without human intervention. At the same time, it is possible to save resources while automatically recovering the cutting fluid and polishing liquid attached to the chips as much as possible, and furthermore, the polishing liquid is prevented from being rotten and the circulating fluid is filtered to improve the precision of the polishing surface and improve the product precision. It is possible to do.
Further, the cutting fluid and the polishing fluid can be filtered and used for a long period of time.

According to a second aspect of the present invention, by providing a covering (3) with hard rubber on the outer periphery of the spherical magnet (2),
Since each of the spherical magnets (2) serves as an O-ring, there is no fear that air or the like leaks even if pressure is applied, and the spherical magnet (2) is the inner surface of the transport pipe (1). Since the moving part is constantly changing, the airtightness can be maintained over a long period of time.

According to a third aspect of the present invention, by providing a covering (3) with a fluororesin on the outer periphery of the spherical magnet (2), each of the spherical magnets (2) serves as a seal. Each spherical magnet (2) can move smoothly over a long period of time.

According to a fourth aspect of the present invention, a coating (3) is provided on the outer periphery of the plurality of spherical magnets (2) with hard rubber and the remainder with a fluororesin, and a fluororesin coating (3) is provided. By arranging the article 3) at the center and arranging the hard rubber coverings (3) on both ends thereof, the overall adhesion can be maintained for a long time, and the hard rubber coverings (3) are provided on both ends. ) Is disposed, so that the airtightness can be maintained well during the reciprocating movement.

A plurality of spherical magnets (2) are arranged inside a non-magnetic transport pipe (1) having a circular cross section as in claim 5, and the spherical magnets (2) are folded in a line. A drive means (5) for moving the spherical magnet (2) is provided, which is hermetically housed in a bendable hose-shaped storage body (4).
The same effect as described above can be obtained, and when used for a long period of time, the container can be used forever by replacing only the storage body (4), and maintenance and management become easy.

The space between the spherical magnets (2) is filled with the silicon liquid by filling the interior of the container (4) with the silicon liquid as described in claim 6, and each spherical magnet (2) is filled with the silicon liquid. ) May be able to move smoothly and to prevent rust.

By using an air drive as the driving means (5), the structure is simple, compact and lightweight, and the speed can be adjusted, and the position of the stopper can be adjusted. is there.

By using a hydraulic drive as the driving means (5), the operation can be performed quietly with almost no noise at the time of operation, and a large driving force can be easily obtained, so that a heavy object can be conveyed. .

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an arrangement state of a stadium magnet of the present embodiment.

FIG. 3 is an explanatory diagram showing another embodiment of the present invention.

FIG. 4 is an explanatory view showing an outline of an embodiment in which the use of the present invention is for cutting chips.

FIG. 5 is an explanatory diagram showing an outline of another embodiment in which the use of the present invention is for cutting chips.

FIG. 6 is an explanatory diagram showing an embodiment in which the use of the present invention is for parts.

FIG. 7 is an explanatory diagram showing an outline of an embodiment in which the use of the present invention is for parts.

FIG. 8 is an explanatory diagram showing a conventional embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveying pipe 2 Spherical magnet 3 Coating body 4 Storage body 5 Drive means

Claims (8)

[Claims] 1. A plurality of spherical magnets (2) are arranged inside a non-magnetic conveying pipe (1) having a circular cross section, and a driving means (5) for moving the spherical magnets (2) is provided. A transfer device using a spherical magnet. 2. The transfer device using a spherical magnet according to claim 1, wherein a coating (3) made of hard rubber is provided on an outer periphery of the spherical magnet (2). 3. The transfer device using a spherical magnet according to claim 1, wherein a coating body (3) is provided with a fluororesin on an outer periphery of the spherical magnet (2). 4. A plurality of spherical magnets (2) are provided on their outer periphery with a coating (3) of hard rubber and the remainder of a fluororesin, the coating being made of a fluororesin coating (3). 2. The transfer device using a spherical magnet according to claim 1, wherein a center member is disposed at the center, and a hard rubber covering body (3) is disposed at both ends thereof. 5. A non-magnetic conveying pipe (1) having a circular cross section, a plurality of spherical magnets (2) arranged therein, and the spherical magnets (2) being arranged in a line and being bent freely. A transfer device using a spherical magnet, which is housed in a hermetically sealed housing (4) in a hermetically sealed manner and provided with a driving means (5) for moving the spherical magnet (2). 6. The transfer device using a spherical magnet according to claim 5, wherein a silicon liquid is filled in the housing (4). 7. A transfer device using a spherical magnet according to claim 1, wherein said driving means is air-driven. 8. A transfer device using a spherical magnet according to claim 1, wherein said driving means is hydraulically driven.