JP2008254831A - Cleaning method for carrying roller of conveyor and manufacturing method for magnetic recording disk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning method for carrying rollers of a conveyor capable of cleaning foreign matters, such as particles, adhered to the carrying rollers of the conveyor for a short time without using operator's hands. <P>SOLUTION: A cleaning member 10 having a foreign matter removing means 3 for removing foreign matters, such as particles, by attraction etc. is traveled on the carrying rollers 4 of the conveyor, and foreign matters, such as particles, adhered to the carrying rollers 4 are removed by the foreign matter removing means 3 abutting on the carrying rollers 4. The foreign matters adhered to the carrying rollers 4 are for example, metal powder. A water-absorbing porous member, such as a sponge, is used for the foreign matter removing means 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for cleaning a conveyor roller of a conveyor that removes foreign matters such as particles adhering to the conveyor roller of the conveyor, and a method for manufacturing a magnetic recording disk.

  In the manufacturing process of a magnetic recording disk in which a magnetic layer is formed on a disk-shaped glass substrate, a cleaning process after the polishing process of the glass substrate and a cleaning process of the magnetic recording disk after sputtering film formation are performed. In the cleaning process, a large number of glass disks or magnetic recording disks are housed in a dedicated disk transport cassette, and the entire cassette is immersed in a cleaning tank for cleaning. Be transported. As a method for transporting a transport cassette containing a magnetic recording disk or the like, transport by a conveyor is common.

  Patent Document 1 discloses a transport method using a conveyor mainly used in a clean room for transporting a pallet mounted with electronic components such as semiconductor chips, and Patent Document 2 transports a workpiece or the like using a linear motor. A method is disclosed.

JP 2000-118710 A JP 2000-191140 A

  According to the inventor's study, when the conveyor cassette containing the magnetic recording disk or the like is transported on the conveyor, the conveyor transport rollers and the side plates of the disk transport cassette are both made of metal (generally stainless steel), It has been found that particles (metal powder) are always generated when they come into contact with each other during conveyance, and the generated particles adhere to the conveyance roller and the conveyance cassette.

  FIG. 4 shows (a) a side view and (b) a front view of the disk transport cassette 5 in a state where a large number of magnetic recording disks 6 are accommodated. Each disk 6 is held in a vertical state by holding portions 51 and 52 that hold both side end surfaces and lower end surfaces thereof, and a number of grooves are formed in the axial direction of each holding portion 51 and 52. The discs 6 can be stored in the cassette 5 at predetermined intervals so as not to contact each other by the grooves.

  FIGS. 5A and 5B show a side view and a front view of a state in which the transport cassette 5 containing the magnetic recording disk 6 is transported on the transport roller 4 of the conveyor. In this case, particles are generated at a portion indicated by A in the figure where the lower end of the side plate of the cassette 5 and the transport roller 4 are in contact during transport.

  Particles adhering to the transport roller 4 are scattered around by the rotation of the roller and reattached to the transport cassette 5 or the magnetic recording disk stored in the cassette or its substrate, adversely affecting the manufacturing process of the magnetic recording disk. Effect. In particular, if particles adhere to the surface of the disk substrate before film formation, defects will occur during film formation. On the other hand, the particles adhering to the transport cassette 5 are transported to the cleaning process as they are and floated in the cleaning liquid when the entire cassette is immersed in the cleaning tank, and are reattached to the magnetic recording disk being cleaned. There is a fear. In addition, metal powder particles may be ion-dissolved in the cleaning liquid (pure water) to adversely affect the magnetic film of the magnetic recording disk.

  Therefore, in order to solve such a problem, it is indispensable to periodically clean the conveyor transport rollers and the disk transport cassette. However, the problem of particles adhering to the transport cassette can be solved, for example, by cleaning the cassette using an automatic cleaning device or the like. Since a person has to perform cleaning manually, there is a problem that this cleaning operation requires a long time and labor.

  In addition, as a conveyance method that can suppress the generation of such particles, there is a method by the linear motor conveyance disclosed in Patent Document 2 described above. However, this method is not in contact with the lower end of the cassette and the conveyance roller. No particles are generated. However, since permanent magnets and electromagnets are used in the transport unit, transporting the magnetic recording disk can adversely affect the magnetic film, etc. Although it is preferable, the generation of particles becomes a problem in the conveyance by the conveyor.

  The present invention has been made in view of such problems of the prior art, and the object of the present invention is to perform cleaning of foreign matters such as particles adhering to the conveying roller of the conveyor in a short time without depending on the hand of the operator. It is an object of the present invention to provide a method for cleaning a conveyor roller of a conveyor, and a method for manufacturing a magnetic recording disk including steps by the cleaning method.

As a result of intensive studies to solve the above problems, the present inventor has completed the present invention.
That is, the present invention is an invention having the following configuration.
(Structure 1 of the invention)
The foreign matter removing means for causing a cleaning member provided with a foreign matter removing means for removing foreign matters such as particles by suction or the like to run on a transport roller of a conveyor, and for contacting foreign matter such as particles adhering to the transport roller with the transport roller It is the cleaning method of the conveyance roller of the conveyor characterized by removing by this.

(Configuration 2)
The cleaning method for a conveyor roller of a conveyor according to Configuration 1, wherein the foreign matter attached to the conveyor roller is metal powder.

(Structure 3 of the invention)
3. The cleaning method for a conveyor roller of a conveyor according to Configuration 1 or 2, wherein the foreign matter removing means is a water-absorbing porous member.
(Configuration 4)

  The cleaning method for a transport roller of a conveyor according to Configuration 2, wherein the foreign matter removing means is a magnet.

(Structure 5 of the invention)
When a disk transport cassette containing a large number of magnetic recording disk substrates or magnetic recording disks is transported on a transport roller of a conveyor, it is generated due to contact between the disk transport cassette and the transport roller and adheres to the transport roller. 5. A cleaning method for a conveyor roller of a conveyor according to any one of configurations 1 to 4, wherein foreign matters such as particles are removed.
(Structure 6 of the invention)
A method of manufacturing a magnetic recording disk, comprising the step of the cleaning method according to any one of Configurations 1 to 5.

  ADVANTAGE OF THE INVENTION According to this invention, the washing method of the conveyance roller of the conveyor which can perform washing | cleaning of foreign materials, such as a particle adhering to the conveyance roller of a conveyor, in a short time without an operator's hand can be provided.

  According to the present invention, since the conveyor rollers of the conveyor can be easily cleaned in a short time, the conveyor rollers can always be kept clean, and the magnetic recording disk or the like caused by particles adhering to the conveyor rollers can be obtained. It is possible to effectively solve the problem of adverse effects.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
FIG. 1 is an assembly part diagram of a cleaning cassette used in the present invention. FIG. 2 is an (a) assembly side view and (b) an assembly front view of the cleaning cassette.
In FIG. 1, 1 is a water storage tank, 2 is a cleaning cassette base, and 3 is a water-absorbing porous member for cleaning. By assembling these parts, a cleaning cassette that is a cleaning member used in the present invention is completed. .

The water storage tank 1 stores water for appropriately supplying water so that the water-absorbing porous member 3 for cleaning does not dry. Further, a water replenishing portion 11 having a small hole is provided on the bottom surface of the water storage tank 1 so that a small amount of water is replenished from the water storage tank 1 to the water-absorbing porous member 3 for cleaning.

The water-absorbing porous member 3 for cleaning is for removing foreign matters such as particles adhering to the conveying roller by adsorption or the like, and specifically, for example, a sponge or the like can be preferably used. The water-absorbing porous member 3 for cleaning has a predetermined length so that it can stably run on a plurality of transport rollers in the side surface direction. Further, when viewed from the front, it is formed in an inclined shape from the center downward and to the left and right, that is, in use, by providing an inclination from the water replenishing portion 11 of the water storage tank 1 to the contact portion with the transport roller, The water replenished to the porous porous member 3 is preferably replenished to the contact portion with the transport roller. It is desirable that the lateral width of the cleaning water-absorbing porous member 3 when viewed from the front is substantially the same as the lateral width between the transport rollers 4 and 4 for transporting the disk transport cassette.

Further, the cleaning cassette base 2 has a predetermined width, locking portions 21 and 21 for locking the cleaning water-absorbing porous member 3 on the left and right, and the cleaning water-absorbing porous material on the locking portion. Screw-shaped stoppers 22 and 22 for fixing the member 3, an installation base 23 on which the water storage tank 1 is installed, and a central portion of the water-absorbing porous member 3 for cleaning are connected to the water replenishment unit 11 of the water storage tank 1. It has a holding part 24 for holding it in a contacted state.

Then, by assembling the water storage tank 1, the cleaning cassette base 2, and the cleaning water-absorbing porous member 3 according to the above configuration, a cleaning cassette 10 as shown in FIG. 2 is completed. That is, the water storage tank 1 is installed on the installation base 23 of the cleaning cassette base 2, and the central portion of the cleaning water-absorbing porous member 3 is passed through the holding portion 24 of the cleaning cassette base 2 to supply water to the storage tank 1. The left and right bent portions of the cleaning water-absorbing porous member 3 are fitted into the locking portions 21 and 21 of the cleaning cassette base 2 and fixed by the stoppers 22 and 22 from above.

3A is a side view and FIG. 3B is a front view showing a state where the cleaning cassette 10 assembled as described above is cleaned by transporting the transport rollers 4, 4,... It is.

The cleaning cassette 10 is transported on the conveyor rollers 4, 4,..., And the cleaning water-absorbing porous member 3 of the cleaning cassette 10 passes over the part where foreign matters such as particles are generated. Foreign matters such as particles adhering to the conveying roller are adsorbed and removed by the water-absorbing porous member 3. That is, according to the present invention, the cleaning cassette 10 as in the present embodiment is simply transported on the conveyor rollers 4, 4,... (That is, the cleaning cassette 10 can be automatically transported). Since the transport roller is cleaned, there is an excellent effect that cleaning of foreign matters such as particles adhering to the transport roller of the conveyor can be performed in a short time regardless of the hand of the operator.

  In this embodiment, the water-absorbing porous member 3 such as a sponge is in direct contact with the conveying roller of the conveyor. The member 3 is not limited.

  The transport roller cleaning method according to the present invention includes: a magnetic recording disk substrate or a disk transport cassette containing a large number of magnetic recording disks, which is transported on a transport roller of a conveyor; Although it is particularly suitable for removing foreign substances such as particles generated by contact and adhering to the conveying roller, most of the particles generated in this case are usually metal powder (iron powder), so foreign substances such as particles are removed. For example, a magnet can be used as the means.

In addition, according to the present invention, since the conveyor rollers of the conveyor can be easily cleaned in a short time, the conveyor rollers can always be kept clean, so that the magnetic recording disk or the like caused by particles adhering to the conveyor rollers It is possible to effectively solve the problem of adverse effects on the environment.
Therefore, the method of manufacturing a magnetic recording disk including the step of cleaning the conveyor rollers of the conveyor according to the present invention is preferable.

It is an assembly parts figure of a cassette for washing. It is the (a) assembly side view and (b) assembly front view of a cassette for washing. It is the (a) side view and (b) front view of the state which is carrying out washing | cleaning by conveying the cassette for washing | cleaning on the conveyance roller of a conveyor. It is (a) side view and (b) front view of the cassette for disk conveyance which accommodated many magnetic recording disks. It is the (a) side view and (b) front view of the state which is carrying the conveyance cassette which accommodated the magnetic recording disk on the conveyance roller of a conveyor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water storage tank 2 Cleaning cassette base 3 Cleaning water-absorbing porous member 4 Transport roller 5 Disc transport cassette 6 Magnetic recording disk 10 Cleaning cassette

Claims (6)

  The foreign matter removing means for causing a cleaning member provided with a foreign matter removing means for removing foreign matters such as particles by adsorption or the like to run on a transport roller of a conveyor, and for contacting foreign matter such as particles adhering to the transport roller with the transport roller A method for cleaning a conveyor roller of a conveyor, wherein   The cleaning method for a conveyor roller of a conveyor according to claim 1, wherein the foreign matter adhering to the conveyor roller is metal powder.   The method for cleaning a conveyor roller of a conveyor according to claim 1 or 2, wherein the foreign matter removing means is a water-absorbing porous member.   The method for cleaning a conveyor roller of a conveyor according to claim 2, wherein the foreign matter removing means is a magnet.   When a disk transport cassette containing a large number of magnetic recording disk substrates or magnetic recording disks is transported on a transport roller of a conveyor, it is generated due to contact between the disk transport cassette and the transport roller and adheres to the transport roller. 5. A method for cleaning a conveyor roller of a conveyor according to claim 1, wherein foreign matters such as particles are removed. 6. A method of manufacturing a magnetic recording disk, comprising a step of the cleaning method according to claim 1.

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