JP2005122819A - Disk grinding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grinding device 1 in which an exchanging work of a disk can be performed easily holding an optical disk such as a DVD and a CD at the back of a lid, and which can grind the disk by rotating a grinder provided inside. <P>SOLUTION: The device includes grinders 20, 21, 22 rotated by rotation force of a motor, and a disk pressing member 19 rotated by rotation force of the motor, when the grinding device 1 is made to be a closed state, a grinding object is contacted to the disk pressing member 19. And when the motor is rotated, the grinders 20, 21, 22 and the grinding object 90 are rotated. Also, it is prevented by the disk pressing member 19 that ground power enters from a center hole of the grinding object. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an apparatus for polishing the surface of a disk.

Conventionally, a recording medium called an optical disc has been used. This optical disk is mainly disc-shaped, and there are formats such as CD (compact disk) and DVD (digital video disk). Furthermore, there are various types of optical discs, such as a type that can only read data, a type that can write and read data, and a type that can write and read data and rewrite data in the erased part. Exists.
The optical disc is used properly according to the purpose (video, music, computer data).

  These optical disks read information recorded by applying light such as laser light to the surface of the disk and detecting reflection of the light. In the optical disk, a disk-shaped recording portion provided inside is covered with a transparent resin such as an acrylic resin or a polycarbonate resin. Further, the surface of the optical disc is smooth in order to direct light from the outside to the recording portion at an accurate position.

However, the surface may be damaged when used or carried. In such a case, when data is read, an error occurs in reading of the internal data, or reading becomes impossible.
For this reason, it is possible to read such a disk by polishing the surface of the optical disk using a polishing apparatus. As this polishing apparatus, for example, a disk polishing machine described in Patent Document 1 below is used.
JP 2002-86338 A

  In the disc polishing apparatus described in Patent Document 1, the disc is rotatably held on the back side of the lid, the polishing surface is faced downward with the lid being covered, and the polishing tool disposed on the lower side of the disc is directed upward. Touch. Then, the polishing tool is rotated, and the disk is rotated by the frictional force between the polishing tool and the disk, whereby the entire disk can be polished. Further, since the disk is held on the back side of the lid, it is easy to replace the disk with the lid open.

  In the above polishing apparatus, since the disk rotates due to the frictional force between the polishing tool and the disk, if the frictional force is increased, that is, if the pressing force is not increased, the disk will not rotate, and thus wear may increase unnecessarily. there were. Further, since the frictional force is changed due to the progress of polishing or the change in the surface state, the rotational speed of the disk is changed, so that the polishing may become unstable.

  In general, the direction of scratches on the surface of the optical disc described above is a random direction regardless of the radial direction or the circumferential direction. In order to clean the scratch by polishing, the sliding direction of the polishing tool with respect to the direction of the scratch has a large relative angle, and preferably a direction orthogonal to the direction if possible.

When the rotational speed of the disk becomes slower than the rotational speed of the polishing tool, the relative movement direction of the polishing tool 101 is biased as shown in FIG. That is, when the rotation speed of the disk 102 is low, the sliding direction of the polishing tool 101 and the disk 102 approximates the rotation direction (circumferential direction) of the polishing tool 101. Therefore, the polishing direction of the portion 105 passing near the center of the polishing tool 101 is close to the radial direction of the disk 102, and the polishing direction of this portion 105 is biased.
On the other hand, when the rotational speed of the disk 102 is close to the rotational speed of the polishing tool 101, the relative movement direction of the polishing tool 101 changes depending on the sliding position as shown in FIG.
As described above, when there are scratches in various directions, the latter is preferable because the polishing direction is easily changed.

  However, since the disk is held on the back side of the lid, it is difficult to attach a motor or the like for rotating the disk. Further, when the motor is attached to the lid, the lid becomes large and heavy, and it is difficult to rotate the lid.

  Accordingly, an object of the present invention is to provide a polishing apparatus in which the disk can be easily replaced by holding the disk on the back side of the lid, and the polishing is more stable.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a container member provided with a main body portion and an openable / closable lid portion, and a disk attached to the inside of the lid portion and rotating as a polishing target. A disc holding member that can be held, and a polishing tool that is disposed inside the main body and is capable of advancing and retreating with respect to the disc holding member and allowing contact with the disc when the container member is advanced in a closed state And a polishing device capable of polishing the disk by rotating the polishing tool with the rotational force of the motor, provided with a disk pressing member that rotates by the rotational power of the motor, and in a state in which the container member is closed The disc pressing member is a disc polishing apparatus in which the disc is brought into contact with the disc and rotated by the rotational power of the motor.

  According to the first aspect of the present invention, since the disk pressing member that rotates by the rotational power of the motor comes into contact with the disk and the disk rotates by the rotational power of the motor, the disk can be rotated with a simple structure, The disk polishing is stable.

  According to a second aspect of the present invention, the disc holding member is provided with a protrusion located at the center of rotation, and the protrusion can be inserted into a center hole provided in a polishing object. 2. A protrusion is inserted into the holding member to hold the object to be polished, and the disc pressing member is in contact with the object to be polished so as to cover the center hole when the container member is closed. The polishing apparatus described in 1.

  According to the second aspect of the present invention, the disc holding member can be inserted into the center hole to be polished, and is provided with a protrusion positioned at the center of rotation, and the disc is closed when the container member is closed. Since the pressing member comes into contact with the object to be polished so as to cover the center hole, it can be used for polishing the object to be polished provided with the center hole, and the penetration of polishing powder from the center hole can be prevented. .

  The invention according to claim 3 is the disk polishing apparatus according to claim 1 or 2, wherein the rotational speed of the polishing tool, the disk pressing member, and the rotational speed are the same.

  According to invention of Claim 3, since the rotational speed of a grinding | polishing tool, the disc pressing member, and rotational speed are the same, grinding | polishing is easy to be stabilized.

  According to a fourth aspect of the present invention, the rotating shaft of the disk pressing member is connected to a motor and has a first gear, and the rotating shaft of the polishing tool is provided with a second gear. The disk polishing apparatus according to claim 1, wherein the first gear and the second gear are engaged with each other.

  According to the fourth aspect of the present invention, the first gear is provided on the rotating shaft of the disk pressing member connected to the motor, and the second gear is provided on the rotating shaft of the polishing tool. Since the gear and the second gear mesh with each other, the rotational power from the motor can be transmitted to the disc pressing member and the polishing tool. Since the rotating shaft of the polishing tool is not directly connected to the motor, the polishing tool can be moved up and down without moving the motor up and down.

  According to a fifth aspect of the present invention, when the container member is closed, the polishing tool is disposed in a polishing space formed inside the container member, and a discharge means for discharging the polishing tool to the outside is provided. A disk polishing apparatus according to claim 1, wherein:

  According to the fifth aspect of the present invention, since the discharge means for discharging to the outside from the polishing space is provided, the polishing powder can be removed and the heat generated by the polishing can be discharged.

  According to the polishing apparatus of the present invention, the disk can be easily replaced, and the polishing can be made more stable.

The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the polishing apparatus according to the present embodiment with a lid opened. FIG. 2 is a schematic view seen from above with the lid of the polishing apparatus opened. FIG. 3 is a schematic diagram showing the internal mechanism of the polishing apparatus as seen in the direction of the arrow in FIG. FIG. 4 is a perspective view of an optical disc to be polished.

  A polishing apparatus 1 according to a first embodiment of the present invention is shown in FIG. In the polishing apparatus 1, a container member 11, a disk holding member 15, a disk pressing member 19, polishing tools 20, 21, and 22 and a polishing tool rotating mechanism 55 are provided.

  In the embodiment described below, the object 90 to be polished using the polishing apparatus 1 is a disk shown in FIG. Specifically, the object 90 to be polished is a DVD, and an optical disk in which two optical disks are stacked and integrated is used. The polishing target 90 is not limited to this, and may be a disc such as a CD.

The container member 11 is provided with a lid portion 12 and a main body portion 13, and the lid portion 12 is rotatably connected to the main body portion 13 via a hinge portion 14 and can be opened and closed. And if the cover part 12 is closed, the grinding | polishing space 40 provided in the main-body part 13 can be sealed from upper side. As shown in FIG. 1, the main body portion 13 is provided with a tray 41, and a polishing space 40 is formed by the tray 41 and the lid portion 12. By the tray 41, the polishing space 40 is partitioned from the motor 56, gears 58, 65, and the like disposed below the polishing space 40.
Furthermore, the tray 41 can be removed with the disk pressing member 19 and the polishing tools 20, 21, and 22 removed, and it is easy to remove the polishing powder adhering to the tray 41.

  In addition, the main body 13 is provided with an operation unit 32 exposed to the outside, and the operation button 35 can be operated to operate, stop, and set conditions of the polishing apparatus 1. It is provided and it is possible to check conditions and operating conditions.

  As shown in FIG. 1, the disk holding member 15 is installed on the back side of the lid portion 12, in other words, on the polishing space 40 side. And when it is in the closed state by the lid 12, it is located above the polishing space 40.

As shown in FIGS. 1 and 3, the disk holding member 15 has a protrusion 16, a flat portion 17, and a bearing portion 18.
The protruding portion 16 is a portion protruding downward from the plane portion 17. The outer shape of the protrusion 16 is circular, and the outer diameter matches the center hole 91 of the object 90 shown in FIG. 4, and the specific outer diameter is 15 mm. The protrusion 16 can employ a structure similar to a generally used CD drive or CD case fixing structure. When the protrusion 16 is inserted into the center hole 91 of the DVD that is the object to be polished 90, the protrusion 16 can be reliably held even when rotated.

  The flat surface portion 17 is flat and slightly larger than the outer shape of the polishing object 90. When the polishing object 90 is held, the flat surface portion 17 comes into contact with the back side surface 94 of the polishing surface 92 of the polishing object 90, and the polishing surface 92 is inside the lid portion 12. Suitable for. In polishing, an upward force received from the polishing tools 20, 21, and 22 to the object to be polished 90 is supported. As the material of the flat portion 17, a material that is soft enough not to damage the object to be polished 90 is used.

  The bearing portion 18 is located between the flat portion 17 and the lid portion 12. And the protrusion part 16 and the plane part 17 can be rotated. The shaft of the bearing portion 18 is located at the center of the outer circle of the protrusion 16.

As shown in FIGS. 1 to 3, the disc pressing member 19 is a cylindrical member as a whole, and has a structure in which an upper cylindrical portion 50 and a lower cylindrical portion 51 are connected.
The material of the upper cylinder part 50 is rubber. Accordingly, when the upper cylindrical portion 50 rotates while being in contact with the polishing object 90, the polishing object 90 rotates accordingly. Further, when the polishing object 90 is held on the disk holding member 15 and the container member 11 is closed, the upper cylindrical portion 50 comes into contact with the center hole 91 of the polishing object 90. Further, a space 50 a is provided inside the upper cylinder portion 50, and when the container member 11 is closed, the protruding portion 16 of the disc holding member 15 enters.

  The lower cylindrical portion 51 is made of metal, and a slit 19b and a reduced diameter portion 19c are provided below the lower cylindrical portion 51. A coiled spring 42 inserted through the reduced diameter portion 19c is provided. When a downward force is applied to the disk pressing member 19 by the spring 42, the spring 42 repels upward.

  Accordingly, the disk pressing member 19 has a role of transmitting the rotational force to the polishing object 90 and a function of blocking the central hole 91 of the polishing object 90 and preventing foreign matter such as polishing powder from entering the boundary portion 93. ing.

  The polishing tools 20, 21, and 22 are shown in FIGS. The polishing tools 20, 21, and 22 are provided with cylindrical surface layers 20a, 21a, and 22a on the upper side, and support portions 45 on the lower side. Different types of surface layers 20a, 21a, and 22a are used. Specifically, the surface layer 20a uses a relatively coarse abrasive, the surface layer 21a uses a relatively fine abrasive, and the surface layer 22a uses a finer finish abrasive. It has been.

  The polishing tools 20, 21 and 22 are arranged at rotationally symmetric positions with respect to the center of the disk pressing member 19. Therefore, the angle between the straight line connecting the center of any of the polishing tools 20, 21, 22 and the center of the disc pressing member 19 is 120 °.

  The support portion 45 includes a disc portion 45a provided with a hook-and-loop fastener on the upper side, and a metal cylindrical portion 45d connected to the disc portion 45a and provided with a slit 45b and a reduced diameter portion 45c. . And surface layer 20a, 21a, 22a can be fixed to the support part 45 by attaching the surface fastener provided in the back side of surface layer 20a, 21a, 22a to the surface fastener of the disc part 45a. Therefore, when the surface layers 20a, 21a, and 22a are replaced due to wear or the like, the work can be easily performed.

  The cylindrical portion 45d has a structure similar to that of the lower cylindrical portion 51 of the disc pressing member 19. The cylindrical portion 45d has a slit 45b and a reduced diameter portion 45c, and a coiled spring 42 inserted through the reduced diameter portion 45c is provided. The spring 42 faces the support portion 45 downward. When force is applied, it rebounds upward.

  As shown in FIG. 3, the polishing tool rotating mechanism 55 includes a motor 56, a solenoid 57, a first gear 58, a second gear 65, a motor shaft rod 59 and a shaft rod 60.

  The motor 56 can rotate the motor shaft 59 connected by external electric power. All the central axes of the motor 56, the motor shaft 59, the protrusion 16 and the bearing 18 of the disk holding member 15, and the disk pressing member 19 are arranged to be the same.

A pin 62 is provided at the upper end of the motor shaft rod 59. Then, the upper end of the motor shaft rod 59 is inserted into the hole in the lower cylindrical portion 51 of the disk pressing member 19 while the pin 62 is inserted into the slit 19b. Accordingly, the rotation of the motor shaft bar 59 can be transmitted to the disk pressing member 19 while allowing movement in the axial direction, and the rotation shaft of the disk pressing member 19 becomes the motor shaft bar 59.
In addition, the motor shaft rod 59 has a flange portion 61, and a spring 42 is disposed above the flange portion 61. Further, a first gear 58 is fixed to the motor shaft rod 59, and the first gear 58 is rotated by the rotation of the motor shaft rod 59.

The first gear 58 fixed to the motor shaft 59 is engaged with the second gear 65. The second gear 65 is provided corresponding to the polishing tools 20, 21, and 22, and in the present embodiment, three are provided. Then, the rotational force transmitted to the second gear 65 transmits the rotation via the shaft rod 60 provided at the shaft center of the second gear 65.
Here, the first gear 58 and the second gear 65 have the same number of teeth, the rotation speed of the first gear 58 and the rotation speed of the second gear 65 are the same, and the rotation directions are opposite. . It should be noted that the rotational speed of the first gear 58 and the rotational speed of the second gear 65 can be changed by changing the number of teeth of the first gear 58 and the second gear 65.

  Specifically, the shaft 60 is inserted into a support portion 45 provided on the polishing tools 20, 21, and 22. Then, the upper end of the shaft rod 60 is inserted into the lower hole of the support portion 45 while the pin 66 of the shaft rod 60 is inserted into the slit 45 b of the support portion 45. Thus, the rotation of the shaft rod 60 can be transmitted to the support portion 45 while enabling the axial movement, and the rotational force of the shaft rod 60 can be transmitted to the polishing tools 20, 21, 22.

  Therefore, when the motor 56 is rotated, the motor shaft rod 59 is rotated and the disk pressing member 19 is rotated, while the first gear 58 is rotated and the polishing tool is rotated via the second gear 65 and the shaft rod 60. The support portions 45 of 20, 21, and 22 rotate.

A solenoid 57 is connected to the second gear 65 and can be moved up and down by operating the solenoid 57. And since the support part 45 is supported by the 2nd gearwheel 65 via the spring 42, the support part 45 raises / lowers according to the raising / lowering of the 2nd gearwheel 65. FIG. Then, when the solenoid 57 rises, the surface layers 20a, 21a, 22a on the upper portion of the support portion 45 come into contact with the object 90 to be polished, and when the solenoid 57 rises further, the spring 42 is compressed and the support portion is supported even if the solenoid 57 rises. 45 does not rise.
Further, due to the compression of the spring 42, the contact pressure between the surface layers 20a, 21a, 22a and the object 90 to be polished becomes a predetermined value.

  In FIG. 3, the solenoid 57 is shown in the raised position on the left side and in the lowered state on the right side. Then, the polishing tool 20 connected to the left solenoid 57 is raised, and the surface layer 20a of the polishing tool 20 is in contact with the object 90 to be polished. Further, the polishing tool 21 connected to the right solenoid 57 is lowered, and the surface layer 21 a of the polishing tool 21 is not in contact with the polishing object 90. In addition, the first gear 58 and the second gear 65 are always in mesh with each other regardless of the position where the solenoid 57 is raised or lowered.

In this embodiment, only one of the three solenoids 57 is raised, and the other solenoids 57 are lowered. The order of ascending when the polishing apparatus 1 is used is the solenoid 57 corresponding to the polishing tool 20, the solenoid 57 corresponding to the polishing tool 21, and the solenoid 57 corresponding to the polishing tool 22, and this is the order in which polishing is performed. .
Further, the time for which the solenoid 57 rises can be set to a predetermined time by the condition setting by the operation unit 32.

  In this embodiment, since the solenoid 57 does not raise the motor 56, a relatively small solenoid 57 can be used.

  Further, the polishing apparatus 1 is provided with a discharging means (not shown). This discharge means is capable of discharging the air, powder, etc. of the polishing space 40 to the outside, and a tube connected to the polishing space 40 is connected to the suction means, so that the polishing powder, heat from polishing, etc. It can be discharged to the outside.

Next, a method for polishing the polishing surface 92 of the polishing object 90 using the polishing apparatus 1 of the present invention will be described.
First, the object 90 to be polished is held on the disk holding member 15, and the container member 11 is closed by the lid 12. In order to maintain the closed state of the container member 11, a locking member 30 is provided on the lid portion 12, a protruding member 31 is provided on the main body portion 13, and the protruding member 31 is engaged when the container member 11 is closed. Locked to the stop member 30.

  Then, the operation button 35 of the operation unit 32 is operated to perform activation and condition setting. In the polishing apparatus 1, the time for polishing with each of the polishing tools 20, 21, 22 can be set to an arbitrary time. This time is set according to the state of the polishing object 90 and the like.

Further, the operation button 35 of the operation unit 32 is operated to start polishing. Then, the motor 56 rotates. Moreover, the discharge means (not shown) is also operated.
As described above, when the motor 56 rotates, the motor shaft rod 59 rotates and the disk pressing member 19 rotates. When the container member 11 is closed, the polishing object 90 and the upper cylindrical portion 50 of the disk pressing member 19 are in contact with each other, so that the polishing object 90 rotates as the disk pressing member 19 rotates.
And since the center hole 91 of the grinding | polishing object 90 is covered with the disk pressing member 19, polishing powder etc. do not permeate the center hole 91 side. In particular, as shown in FIG. 4, the polishing object 90 has two boundary portions 93 as shown in FIG. Intrusion into the gap from the boundary portion 93 by force can be reliably prevented.

  On the other hand, when the motor 56 rotates, the support portions 45 of the polishing tools 20, 21, and 22 rotate. In this state, the solenoid 57 corresponding to the polishing tool 20 is raised. Then, the surface layer 20a of the polishing tool 20 comes into contact with the polishing surface 92 of the polishing object 90.

  Thus, the polishing tool 20 and the polishing object 90 come into contact with each other while rotating, and stable polishing can be performed.

  After the set time elapses, the solenoid 57 corresponding to the polishing tool 20 is lowered and the solenoid 57 corresponding to the polishing tool 21 is raised. Thereafter, similarly, the solenoid 57 is raised and lowered, and is polished by the polishing tool 21 for a predetermined time, and further polished by the polishing tool 22 for a predetermined time.

  When all the polishing is completed, the motor 56 and the discharging means are automatically stopped. And the cover part 12 of the container member 11 is opened, and the grinding | polishing object 90 is taken out.

  When the polishing apparatus 1 is used, the polishing space 40 is soiled by polishing powder or the like, but the polishing apparatus 1 of this embodiment is easy to clean. That is, the polishing tools 20, 21, and 22 transmit the rotational force by the pin 66 of the shaft rod 60, but can be easily moved in the axial direction. Therefore, the polishing tools 20, 21, and 22 are moved upward and removed. It is possible to easily remove the dirt on the back side. Similarly, the disk pressing member 19 transmits the rotational force by the pin 62 of the motor shaft rod 59. However, since the axial direction can be easily moved, the disk pressing member 19 is moved upward to be removed and removed from the rear side. Dirt can be easily removed.

  In the above embodiment, the case where three polishing tools are installed has been described as an example, but one, two, four or more polishing tools can be installed.

It is the perspective view shown in the state where the lid | cover of the grinding | polishing apparatus in this embodiment was opened. It is the schematic diagram seen from the state in the state which opened the lid | cover of the grinding | polishing apparatus. It is the schematic diagram which showed the mechanism inside the grinding | polishing apparatus seen in the arrow direction of FIG. 1 is a perspective view of an optical disc to be polished. It is the schematic diagram which showed the grinding | polishing direction when rotation of a disk is slow compared with rotation of a grinding | polishing tool. It is the schematic diagram which showed the grinding | polishing direction in case the rotation of a disk is the same as rotation of an abrasive | polishing tool.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Polishing apparatus 11 Container member 12 Cover part 13 Main body part 15 Disc holding member 16 Protrusion part 19 Disc pressing member 20, 21, 22 Polishing tool 40 Polishing space 56 Motor 58 First gear 59 Motor shaft rod 60 Shaft rod 65 Second Gear 90 for grinding 91 center hole

Claims (5)

A container member provided with a main body part and an openable / closable lid part, a disk holding member attached to the inside of the lid part and capable of rotatably holding a disk to be polished, and an inside of the main body part And a polishing tool that can be moved forward and backward with respect to the disk holding member and can contact the disk when the container member is advanced in a closed state, and the disk is rotated by the rotational force of the motor. In the polishing apparatus capable of polishing the disk, a disk pressing member that rotates by the rotational power of the motor is provided, and when the container member is closed, the disk pressing member contacts the disk and the disk is driven by the rotational power of the motor. A disk polishing apparatus that rotates. The disk holding member is provided with a protrusion located at the center of rotation, and the protrusion can be inserted into a center hole provided in the object to be polished. The polishing apparatus according to claim 1, wherein the disc pressing member is in contact with an object to be polished so as to cover the center hole when the container member is closed. 3. The disk polishing apparatus according to claim 1, wherein the rotational speed of the polishing tool is the same as the rotational speed of the disk pressing member. The rotating shaft of the disk pressing member is connected to a motor and has a first gear, and the rotating shaft of the polishing tool is provided with a second gear, and the first gear and the second gear are provided. The disc polishing apparatus according to any one of claims 1 to 3, wherein the gear is engaged with a gear. 5. The polishing tool is disposed in a polishing space formed inside the container member when the container member is closed, and is provided with discharge means for discharging the polishing tool to the outside from the polishing space. The disc polishing apparatus according to any one of the above.

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