JPH0648549B2 - Disk holding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a disc holding device particularly used for producing a disc represented by a compact disc.

[Outline of Invention]

In the present invention, the spring that is inserted into the center hole and holds the disc is made smaller each time the disc is attached or detached.

[Conventional technology]

In a compact disc, a reflective film made of aluminum or the like is formed on the signal surface of a substrate onto which recorded information is transferred, and a protective film made of an ultraviolet curable resin or the like is further coated on the reflective film. When forming the reflective film, a plurality of substrates having a signal surface are held by a holder, such a plurality of holders are carried into the inside of a vapor deposition device or the like, and aluminum is vapor-deposited on the signal surface. When the vapor deposition is completed, the holder is pulled out of the vapor deposition apparatus, the substrates on which the reflective film is formed are removed from all the holders, and when the vapor deposition is completed, the substrate on which the reflective film is not formed is attached to each holder again.

By the way, in the case of automating the work of attaching (loading) a substrate without a reflection film to the holder or removing (unloading) the substrate with a reflection film, in the case of mechanization, the substrate is taken up. Therefore, a holding device that can be removed after being moved to a predetermined position is required.

In the conventional holding device, for example, the outer peripheral portion or the flat surface portion of the substrate is locked by a predetermined member, and the spring is elastically deformed at the inner peripheral end portion of the central hole to be attached / detached.

[Problems to be solved by the invention]

As described above, in the conventional device, the center hole of the substrate itself presses the spring, so if the biasing force of the spring is increased to ensure the holding, the center hole receives the reaction of the spring and damages such as cracks. May occur.

Therefore, an object of the present invention is to provide a holding device that ensures holding and is less likely to cause such damage.

[Means for solving problems]

According to the present invention, in a disc holding device, a spring that is inserted into a center hole of a disc and holds the disc by its elastic force, a first flange portion that abuts a flat portion near the center hole of the disc, a chuck when moving, and the like. A first means having a gripping portion that is gripped by the second means, a second flange portion that comes into contact with the flat surface portion of the disc when the disc is attached to and detached from the first means, and protrudes from the center of the second flange portion, Abutting against the spring to elastically deform the spring to a smaller diameter than the central hole,
And a second means having an abutment portion having a diameter smaller than that of the central hole.

[Action]

The disk holding device is composed of first means and second means. The first means has a spring, a first flange portion, and a grip portion. After the spring is inserted into the center hole of the disc, the diameter of the spring becomes larger than that of the center hole, so that the first flange portion is pressed against the disc by the urging force. This first
Grasp the gripping part with the means attached to the disc,
The disc can be moved into position.

When the first means is attached to or detached from the disk, the contact portion of the second means contacts the spring, and the spring has a diameter smaller than that of the central hole. In this state, the second flange portion of the second means contacts the disk and supports the disk.

〔Example〕

FIG. 4 shows a plan view of the disk manufacturing apparatus of the present invention. Reference numeral 1 is a supply means, to which a plurality of cases 2 are attached. The case 2 accommodates a plurality of substrates 4 having a signal surface onto which recording information is transferred. The substrate 4 is made of, for example, a synthetic resin such as polycarbonate. Denoted at 3 is a take-out means, and the substrate 4 from the case 2 is
The sheets are taken out one by one by vacuum suction or the like and sequentially placed on the conveying means 11.

As shown in FIGS. 4 and 2, the conveying means 11 has a guide portion 12 for positioning the substrate 4 at a predetermined pitch P.
It has a bar 13 of books. The bar 13 rises vertically (in the direction perpendicular to the paper surface in FIG. 4, upward in FIG. 2) and then forward (in the right direction in FIG. 4 and in the direction perpendicular to the paper surface in FIG. 2).
It moves one pitch at a time, then descends vertically, and then moves backward by one pitch. 1 pitch P is provided at a position corresponding to the center hole of the substrate 4 positioned in the guide portion 12.
The locking portion 14 is fixed and arranged for each. The locking portion 14 has a conical portion 15 that fits in the center hole of the substrate 4, and a flange portion 16 that supports the substrate 4. The height of the flange portion 16 is lower than the position of the guide portion 12 when the bar 13 is raised and is higher than the position when the bar 13 is lowered. Therefore, every time the bar 13 moves up, forward, down, and backward for one cycle, the substrate 4 is sequentially conveyed (moved) by one pitch P to the front locking portion 14.

As is apparent from FIGS. 4 and 2, a plurality of (one pair in this embodiment) the supply means 1 and the transport means 11 are provided. Therefore, the substrates (disks) 4 to which different kinds of recording information are transferred can be respectively supplied from one and the other supplying means 1 (they may be the same, of course).

When the eight substrates 4 are transported to the predetermined position by the transport unit 11, the loading unit 21 starts the operation. The loading means 21 has eight chucks 22 (that is, a total of 16 chucks) arranged at every pitch P corresponding to each transport means 11. The loading means 21 moves the chuck 22 toward the holder 33.

As shown in FIGS. 6 and 7, the holder 33 provided with a pair of eight holding portions is a combination of three holders. The loading means 21 is one of the holders 3
Positioning is performed by the member 41 so that 3 is opposed to the conveying means 11 side. The opposing holders 33 hold two rows of eight substrates 4 each having a reflective film already formed thereon.

As shown in FIG. 8, the chuck 22 holds the holding portion 52 of the mask 51 and separates the substrate 4 from the holder 33. Since the leaf spring 55 is inserted into the center hole of the substrate 4 and spreads outward, the substrate 4 is pressed and held by the flange portion 53 of the mask 51.

The loading unit 21 moves the substrate 4 separated from the holder 33 integrally with the mask 51 to the transfer unit 61 and unloads it. Unloading is performed as shown in FIGS. 3 and 1. Similarly to the transporting means 11, the transporting means 61 also includes two bars 6 each having a guide portion 62 formed therein.
3 and a locking portion 64 fixed at every 1 pitch P. The locking portion 64 is a contact portion 6 having a diameter smaller than the center hole of the substrate 4.
5 and a large-diameter flange portion 66. Contact part 65
When the flange portion 66 is at the reference position, the flange portion 66 is located below the raised guide portion 62 and above the lowered guide portion 62. The chuck 22 transfers the substrate 4 to the transfer means 6
When moved to a predetermined position above 1, the contact portion 65 is raised by the plunger 67. The contact portion 65 contacts the leaf spring 55, compresses the leaf spring 55, and reduces its diameter. As a result, the substrate 4 is separated from the mask 51 by gravity and falls. At this time, since the flange portion 66 is driven by the plunger 68 and is raised,
The center hole is fitted into the contact portion 65, and the flat surface portion is supported by the flange portion 66. The contact portion 6 that supports the substrate 4 thus unloaded
5 and the flange portion 66 descend to the reference position.

When the unloading is completed, the bar 63 moves upward, forward, downward, and backward as one cycle like the bar 13. Therefore, the substrate (disk) 4 on which the reflective surface is formed is sequentially moved forward by one pitch P. Be transported. Since the unloading is performed on eight substrates, the first eight of the locking portions of the transporting means 61 are the locking portions 64, but the rest are the locking portions 14. Conveying means 61
Also, one pair is provided corresponding to the transport means 11. Therefore, it is possible to separately take out the substrates having different recording information from the one and the other conveying means 61. Of course, if the number of systems is increased, more kinds of substrates can be processed.

The substrate 4 is moved to the next step (for example, a protective film forming step) by the transfer means 61.

On the other hand, when the unloading is completed, the loading means 21 continues to load next. The first several locking portions of the transporting means 11 are the locking portions 14, and the last eight locking portions 64 are for loading.
Is configured.

When the unloading is completed, the chuck 22 holds the mask 51. The loading means 21 positions the mask 51 above the center holes of the last eight substrates 4 of the transport means 11. Next, the contact portion 65 of the locking portion 64 and the flange portion 66 both rise. The contact portion 65 is fitted into the center hole of the substrate 4, and the flange portion 66 abuts on the flat surface portion of the substrate 4, so that the substrate 4 rises apart from the guide portion 62.
When the tip of the contact portion 65 contacts the leaf spring 55, the leaf spring 5
5 is elastically deformed to have a smaller diameter than the central hole of the substrate 4. At this time, since the protrusion 56 functions as a stopper, the leaf spring 55 does not deform more than necessary. The contact portion 65 stops at a position where it contacts the leaf spring 55, but the flange portion 66 further rises and stops when the substrate 4 contacts the flange portion 53 of the mask 51. In this state, the contact portion 65 then descends. Since the inner diameter of the flange portion 66 is set to be larger than the diameter when the leaf spring 55 spreads, the leaf spring 55 has a large diameter due to its own elastic force when the contact by the contact portion 65 is released. As a result, the substrate 4 is held on the mask 51.

In this way, in the case of loading and unloading, the leaf spring 55 is not pressed by the center hole itself of the substrate 4, so that the center hole is prevented from being cracked.

The loading means 21 holds the mask 51 holding the substrate 4 with the chuck 22 and moves it to the position of the holder 33. Since the holder 33 has just removed the substrate 4 on which the reflection film is formed, the substrate 4 is not loaded. The chuck 22 inserts the protrusion 56 of the mask 51 into the hole 43 provided in the holder 33. The protrusion 56 is made of, for example, magnetic stainless steel, and the magnet 44 is fixed to the hole 43. Therefore, the magnet 44 attracts the protrusion 56, and the attraction force causes the flange 53 to press the substrate 4 toward the holder 33. . Since the inner diameter of the hole 43 is set to be larger than the large diameter of the leaf spring 55, the leaf spring 55 does not have a small diameter inside the hole 43. Further, in order to obtain a sufficient attractive force, the tip of the protruding portion 56 is brought as close as possible to the magnet 44, but is not in contact with it. The hole 43 is provided with a small hole 45 for removing air. This is to completely remove the air in the holes 43 when the pressure is reduced in the process of forming the reflective film. In this way, the vicinity of the central hole of the substrate 4 loaded in the holder 33 is masked by the flange portion 53 of the mask 51, so that no reflective film is formed. Further, the holder 33 is provided with the protruding portion 42 in an annular shape, and since the protruding portions 42 face each other, the reflection film is not formed on the outer peripheral end portion of the substrate 4.

For example, a groove 54 is formed near the joint between the grip portion 52 and the flange portion 53, which are integrally formed of synthetic resin or the like.
In the reflective film forming step, the reflective film is not only on the substrate 4,
It is also formed outside the mask 51. Therefore, the chuck 22
When the grip portion 52 is gripped by, the reflective film which is rubbed by the chuck 22 and formed on the outside of the mask 51 is removed.
When the removed dust adheres to the signal surface (the upper surface in FIG. 8), pinholes are generated. Therefore, by providing the groove 54, the horizontal surface (the surface on which the reflective film is easily formed) that is in contact with the chuck 22 is made as small as possible so that dust is not easily generated. Further, the generated debris falls into the groove 54, and the amount of the debris that falls onto the substrate 4 is reduced.

When the unloading and the loading of one holder 33 are completed, the loading means 21 temporarily releases the positioning by the member 41 and rotates the shaft 34 by 120 degrees,
Position again. As a result, the new holder 33 faces the loading means 21. The new holder 33 is also unloaded and loaded in the same manner as described above.

As shown in FIG. 5, seven holders 33 are arranged on the base 32, with three holders as one set. Therefore, one set of holders 33
When the unloading and the loading are completed, the gear 37 fixed to the base 32 is rotated by a gear (not shown), and a pair of adjacent holders faces the loading means 21.

In this way, when the loading and unloading of each of the seven holders 33 is completed, as shown in FIG. 4 (only one holder is shown in the figure for convenience), the reflective film forming system. At 31, the base 32 is moved from the loading position facing the loading means 21 to the position 46. At a position 46, a material 40 such as aluminum for forming a reflection film is mounted on a heater 39 supported by a pole 38 provided in the center of the base 32,
Will be placed. The base 32 has a structure in which one set of holders is omitted in order to secure a space for mounting work.

Of course, the material can be loaded when the base 32 is in the loading position, if necessary.

The base 32 supplemented with the material 40 is moved to a position 47, and is further moved into the reflection film forming means 48 arranged at the reflection film forming position.

When the base 32 is arranged inside, the reflection film forming means 48 decompresses the inside of the chamber and heats the heater 39 to evaporate the material 40. The evaporated material 40 becomes fine particles and is scattered in a radial manner to form a reflective film on the substrate 4 held by the holder 33. At this time, since the gear 37 is rotated, the base 32 is rotated and each holder revolves. At this time, the gear 35 provided in each holder set is rotated by the central fixed gear 36, so that each holder revolves around the sun at the same time. In this way, the reflective film is uniformly formed.

When the formation of the reflective film is completed, the base 32 is moved to the position 49, and then to the position facing the loading means 21 again. That is, the base 32 circulates in each position.

When it takes about 10 minutes to form the reflective film and about 13 to 15 minutes for loading and unloading, it is efficient to circulate, for example, three bases 32. That is, when one base 32 is being loaded and unloaded, another one is placed at the reflection film forming position to form the reflection film. Since the formation of the reflective film is completed a little earlier, the completed base is moved to the position 49 and made to stand by. And position 46
The other one that had been made to stand by is moved to the position 47 and made to stand by. When the loading and unloading that takes the longest time is completed, place the base at position 46 and position 49.
The pedestal is moved to the loading position, and the pedestal at the position 47 is moved into the reflection film forming means 48.

9 and 10 show a mechanism for rotating the holder 33. The gear 35 is fixed to a substantially cylindrical gear shaft 71. A pin 72 is inserted in the center of the gear shaft 71 so as to be rotatable and vertically movable. 73 is a spring,
The lower surface of the coupling portion 70 fixed to the tip of the pin 72 is urged so as to contact the upper surface of the gear shaft 71. Coupling part 70
Three holes 75 are provided on the lower surface of the device at intervals of 120 degrees. Further, three coupling pins 74 that fit into the holes 75 are also provided on the upper surface of the gear shaft 71. Three holes 77 are provided on the bottom surface of the shaft 34 at the center of the holder 33, and three coupling pins 76 that fit into the holes 77 are provided on the upper surface of the coupling portion 70.

When the holder 33 is located at a position other than the position where it is positioned by the member 41, the coupling pin 76 is fitted in the hole 77 and the coupling pin 74 is fitted in the hole 75. Therefore gear 3
When 5 rotates, the gear shaft 71, the coupling portion 70, and the shaft 34 rotate, and the holder 33 supported by the shaft 34 rotates (rotates).
To do.

When the holder 33 is positioned by the member 41, the head 78 moves up and the three coupling pins 79 formed on the upper surface of the head 78 fit into the three holes 80 formed on the lower surface of the pin 72. . When the head 78 further rises against the biasing force of the spring 73, the pin 72 also rises, and the engagement between the coupling pin 74 and the hole 75 is released. In this state, the head 7 is attached via the gear 81 fixed to the outer periphery of the head 78.
8 is rotated about 120 degrees. Therefore, the pin 72 and the connecting portion 7
0, the shaft 34 is rotated about 120 degrees (at this time, the gear 35,
The gear shaft 71 does not rotate.)
Is rotated once. The holder 33 is positioned by the member 41 at the position rotated by 120 degrees, as described above.

When the unloading and loading of the first holder 33 among the three holders 33 is completed, the shaft 34
Is rotated 120 degrees to unload and load the second holder 33. When it is finished, the shaft 34 is rotated further 120 degrees and the third holder 3
Unloading and loading of 3 are performed. That is, loading on the three holders 33,
The rotation angle of the shaft 34 required for unloading is 2
It is 40 degrees. When the loading and unloading of the three holders 33 are completed, the head 78 is lowered,
Along with that, the pin 72 also descends. The lower surface of the coupling portion 70 and the upper surface of the gear shaft 71 are coupled to each other by, for example,
In the case of using a groove and a protrusion that fits in the groove, the pin 72 (or the gear shaft 71) must be further rotated by 120 ° for a total rotation of 360 ° before the two can be joined. Therefore, the original operation requires unnecessary rotation, which takes time. However, in this embodiment, as many pins 74 as the number of holders 33 are provided.
And the hole 75, the pin 72 is
It is possible to connect the connecting portion 70 and the gear shaft 71 by lowering them without rotating them by 20 degrees. Therefore, the operation other than the original operation becomes unnecessary.

For example, when four holders 33 are used as one set, four holes corresponding to the coupling pins may be provided, or two grooves and two protrusions that vertically intersect each other may be provided. Even when the number of holders is further increased, the number of connecting pins and holes may be similarly increased.

〔effect〕

As described above, according to the present invention, in the disc holding device, the spring that is inserted into the center hole of the disc and holds the disc by its elastic force, and the first flange portion that comes into contact with the flat portion near the center hole of the disc move. A first means having a gripping portion that is gripped by a chuck or the like, a second flange portion that comes into contact with a flat surface portion of the disc when the disc is attached to or detached from the first means, and a center of the second flange portion. Since the second means having a contacting portion having a diameter smaller than that of the central hole and protruding and elastically deforming the spring by contacting the spring with a diameter smaller than that of the central hole is provided, the spring can be strengthened,
Not only can the disc be prevented from falling off during movement, but also damage to the center hole can be prevented, and the yield can be improved.

[Brief description of drawings]

FIGS. 1, 2 and 3 are side views of the conveying means of the disk manufacturing apparatus of the present invention, FIG. 4 is a plan view of the disk manufacturing apparatus, FIG. 5 is a plan view of its base, and FIG. 7 and 8 are a plan view and a front view of the holder, FIG. 8 is an exploded plan view of the holder, and FIGS. 9 and 10 are a side view and a bottom view of a rotation mechanism of the holder. 1 ... Supplying means 2 ... Case 3 ... Ejecting means 4 ... Substrate 11 ... Conveying means 12 ... Guide section 13 ... Bar 14 ... Locking section 15 ... Cone section 16 ... Flange section 21 ... ... Loading means 22 ... Chuck 31 ... Reflective film forming system 32 ... Base 33 ... Holder 34 ... Shaft 35, 36, 37 ... Gear 38 ... Pole 39 ... Heater 40 ... Material 41 ... Member 42 ... Projection 43 ... Hole 44 ... Magnet 45 ... Small hole 46, 47, 49 ... Position 48 ... Reflective film forming means 51 ... Mask 52 ... Grip 53 ... Flange 54 ... ... Groove 55 ... Leaf spring 56 ... Projection part 61 ... Conveying means 62 ... Guide part 63 ... Bar 64 ... Locking part 65 ... Contact part 66 ... Flange part 67, 68 ... Plunger 70 ...... Coupling 71 ...... Gi Axis 72 ...... pin 73 ...... spring 74 ...... coupling pin 75 ...... hole 76 ...... coupling pin 77 ...... hole 78 ...... head 79 ...... connecting pin 80 ...... hole 81 ...... gear

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroaki Watanabe 2680 Nishi Hanawa, Tatomi-cho, Nakakoma-gun, Yamanashi Pioneer Video Co., Ltd. (72) Shunji Inamura 2680 Nishi-hanawa, Tatomi-cho, Nakanima-gun Yamanashi Pioneer Video Incorporated (72) Inventor Akio Ogoshi 2680 Nishi Hanawa, Tatomi-cho, Nakakoma-gun, Yamanashi Pioneer Video Corp. (72) Inventor Tsuneo Iwasaki 2680 Nishi-wana, Tatomi-cho, Nakakoma-gun, Yamanashi Pioneer Video Ltd.

Claims (1)

[Claims] 1. A spring which is inserted into a center hole of a disk and holds the disk by its elastic force, a first flange part which abuts a flat surface part near the center hole of the disk, and a chuck or the like when moving. A first portion having a grip portion gripped by the second flange portion, a second flange portion that comes into contact with a flat surface portion of the disc when the disc is attached to and detached from the first means, and a center of the second flange portion. A second holding means having a contacting portion having a diameter smaller than that of the central hole and further protruding and elastically deforming the spring to have a diameter smaller than that of the central hole.