JP2001266415A - Stamper exchanging device for forming optical disk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stamper exchanging device for forming an optical disk by which the exchange of a stamper is facilitated without taking much time. SOLUTION: A stamper exchanging unit component 14 having a stamper attached beforehand to a built-in stamper attaching surface is traveled on two parallel guide rails 17. The stamper exchanging unit component 14 is lowered in the position of the movable side template 22 of an optical disk metallic mold provided in parallel with the stamper exchanging unit component 14 in the lower surface of the traveling route thereof. Then, the stamper exchanging unit component 14 is automatically loaded on the movable side template 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for exchanging a stamper for molding an optical disk such as a CD (compact disk).

[0002]

2. Description of the Related Art Conventionally, when a stamper used for molding an optical disk is replaced directly with the stamper mounting surface of an optical disk molding die, since the work is performed in the die, the stamper mounting surface of the stamper and the optical disk molding die is used. It is difficult to remove foreign matter such as dust between them, and it takes time to replace the stamper. Therefore, install the stamper first on the stamper replacement unit part that has a built-in stamper mounting surface. By attaching the stamper replacement unit component to the optical disk molding die, the stamper replacement operation can be performed off-line, facilitating the removal of foreign matter such as dust between the stamper and the stamper mounting surface and the stamper replacement operation. I was doing it.

FIG. 6 is a side sectional view of a conventional optical disk molding die, and shows a stamper replacement unit component 1 and a movable mold plate 2 to which the stamper replacement unit component 1 is attached.
The stamper replacement unit component 1 includes a stamper 6 placed on a mirror-like stamper mounting surface 5 of a fixed mirror insert 4, and the stamper 6.
Are fixed to the fixed-side mirror insert 4 by the stamper holder 7 at the center and by the outer ring 8 at the outer periphery, and a rotating ring for attaching the stamper replacement unit part 1 to the movable-side mold plate 2 and the fixed-side mold plate 3. 9 is attached to the outer peripheral portion. The movable mold plate 2 is provided with a movable mirror insert 10 having a mirror-finished surface facing the stamper 6 attached to the stamper replacement unit component 1, and the stamper is provided on the outer periphery of the movable mirror insert 10. A bolt 11 that engages with the rotating ring 9 of the replacement unit component 1 and attaches the stamper replacement unit component 1 to the movable mold plate 2 is planted. The fixed-side template 3 is provided with bolts 13 which are engaged with the rotating ring 9 of the stamper-replacement unit component 1 and attach the stamper-replacement unit component 1 to the fixed-side template 3 on the outer peripheral portion of the fixed-side plate 12. It is configured.

In the optical disk molding die having the above configuration, first, the stamper replacement unit part 1 is moved to the movable mold plate 2.
Then, the operator manually mounts and positions the movable template 2 and closes the movable template 2 and the fixed template 3, rotates the rotating ring 9 of the stamper replacement unit part 1, and bolts the fixed template 3. The stamper replacement unit component 1 is attached to the fixed side mold plate 3 by engaging the engagement holes of the rotary ring 9 with the stamper 13. Finally, the worker tightens the bolt 13 with a wrench from the parting surface side of the fixed side template 3 to complete the production of the stamper by completing the mounting operation.

[0005]

However, in the conventional optical disk molding die having the above structure, the worker manually mounts and positions the stamper replacement unit component on the movable mold plate. The stamper replacement unit parts may be attached to the movable mold plate at an angle, and the mirror surface of the movable mirror insert of the movable mold plate may be damaged, requiring very careful manual work by the operator. There is a problem that a long time is required for replacement.
Furthermore, in order to ensure that the stamper replacement unit parts are attached to the fixed side template, the operator tightens the bolts with a wrench from the parting surface side of the fixed side template. There is a risk that the wrench may be accidentally dropped on the movable mold plate, thereby damaging the mirror surface of the movable mirror insert of the movable mold plate. When the above trouble occurs, a large amount of time is required every time the stamper is replaced, which greatly affects the production operation time, and also stops the production itself, which is a very serious problem.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a stamper exchanging apparatus for molding an optical disk, in which the exchanging of the stamper is easy and the exchanging of the stamper does not require much time.

[0007]

In order to solve the above-mentioned problems, the present invention provides a stamper replacement unit part in which a stamper is mounted on a built-in stamper mounting surface in advance on two parallel guide rails. Then, the stamper replacement unit component is lowered at the position of the movable mold plate of the optical disk molding die provided on the lower surface of the traveling path in parallel with the stamper replacement unit component, and the stamper replacement unit component is mounted on the movable mold plate. The present invention provides a stamper changing device for forming an optical disk, in which the stamper can be easily replaced, and the stamper replacement does not require much time.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, a stamper replacement unit component in which a stamper is previously mounted on a built-in stamper mounting surface is run on two parallel guide rails. Lowering the stamper replacement unit part at the position of the movable mold plate of the optical disk molding die provided on the lower surface of the path parallel to the stamper replacement unit part, and mounting the stamper replacement unit part on the movable mold plate This is a stamper changing device that moves a stamper changing unit part by moving it on two parallel guide rails to the position of the movable mold plate, and lowers the part toward the movable mold plate at that position. , The mounting and positioning of the stamper replacement unit component on the movable mold plate can be performed automatically.

According to a second aspect of the present invention, a guide sleeve that slides on two parallel guide rails is provided on both sides of the stamper replacement unit part, and slides into the groove of the guide rail. A slide bar is provided, a concave portion formed by an inclined surface is provided on the upper surface of the slide bar, and a stamper replacement unit component traveling on the guide rail is provided on both side surfaces of the guide rail at a position to be lowered toward the movable mold plate. A U-shaped notch was formed, and the concave portion on the upper surface of the slide bar that slides in the groove of the guide rail was overlapped with the U-shaped notch on both sides of the guide rail. 2. The stamper changing device for molding an optical disk according to claim 1, wherein the stamper changing unit part coming to the position can be lowered toward the movable mold plate. By superimposing outs U-shaped cut on both sides of the recess and the guide rail of the upper surface of the slide bar in its position, has the effect that automatically lowers the stamper replacement unit which has been traveling on the guide rail.

According to a third aspect of the present invention, a stamper replacement unit component in which a stamper is previously mounted on a built-in stamper mounting surface is superimposed on a fixed side template of an optical disk molding die, and is fixed to the fixed side template. A bolt whose tip engaging portion protrudes below the stamper replacement unit component through the side template and the stamper replacement unit component is rotatably implanted, and the bolt is moved up and down to fix the stamper replacement unit component on the fixed side. In an optical disk molding stamper changing device for tightening and fixing to a template, the upper and lower bolts are screwed into a screw hole at the center of a spur gear rotated by a rack driven from the outside of the optical disk molding die. This is an optical disk molding stamper replacement device that engages with the The upper and lower bolts are fixed by a rack driven from the outside of the optical disk molding die, so that a wrench or the like falls as in the conventional case where the bolts are tightened and fixed inside the optical disk molding die. Therefore, there is an effect that the tightening operation is safe and easy.

According to a fourth aspect of the present invention, the rack driving bolt is rotatably mounted in the longitudinal direction of the rack, and has a screw hole meshing with a screw portion fixed in the middle of the rack driving bolt. 4. A holder block is provided.
The rack drive bolt is rotated by rotating the rack drive bolt and engaging the screw portion fixed in the middle of the rack drive bolt with the screw hole of the holder block, thereby forming the rack drive bolt. Even if the hand of the worker who pulls is loosened, the stamper replacement unit component has the effect of being able to maintain the fixed fastening to the fixed side template.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1) FIG. 1 is a top view of an optical disk molding stamper exchanging apparatus according to Embodiment 1 of the present invention, FIG. 2 is a sectional view of the same part, and FIGS.
(C), (d) is a state explanatory view in each state of a part of FIG. 1, 14 is a stamper replacement unit part having a stamper mounted on a mirror-shaped stamper mounting surface, 15
Are bolts 16 on both sides of the stamper replacement unit part 14.
The two guide sleeves 17 are attached in parallel by two, and the orthogonal guide sleeve 15 slides on the guide sleeve 15 so that the stamper replacement unit part 14 travels between the two guide sleeves, and two parallel U-shaped cross-sections. A guide rail 18 is a slide bar that slides in the U-shaped groove 19 of the guide rail 17, a bolt 20 is connected to an external operating handle and fixes the slide bar 18,
Is the position of the movable side mold plate 22 of the optical disk molding die in which the stamper replacement unit component 14 traveling between the two parallel guide rails 17 is provided on the lower surface of the traveling path in parallel with the stamper replacement unit component 14. The guide sleeve 17 that slides on the guide rail 17 along with the concave portion 23 formed by the inclined surface on the upper surface of the slide bar 18 that slides in the U-shaped groove 19 of the guide rail 17 U-shaped notches formed on both side surfaces of the guide rail 17 so that the stamper replacement unit component 14 running between the two parallel guide rails 17 can be moved to a predetermined location, that is, A forward-only block provided on the movable-side mold plate 22 so as to accurately stop at the mounting position of the stamper replacement unit component 14 on the movable-side mold plate 22 and not to move sideways. A.

In the optical disc molding stamper exchanging apparatus having the above-described configuration, the stamper exchanging unit component 14 is first mounted on the movable mold plate 22 of the optical disc molding die by an operator manually. By sliding the two guide sleeves 15 attached to the respective sides of each of the 14 on two guide rails 17 provided in parallel, the stamper replacement unit part 14 is moved between the guide rails 17. The traveling limited block 2 on the movable mold plate 22 which is ahead of the traveling direction in the traveling direction
Stop against 4 U-shaped notches 21 are formed on both side surfaces of the guide rail 17 on which the guide sleeve 15 rides at the stopped position.

However, in this state, the guide sleeve 15 cannot be lowered toward the movable mold plate 22 while the guide sleeve 15 is still on the upper surface of the slide bar 18 that slides in the U-shaped groove 19 of the guide rail 17. But in the next stage,
By pressing a bolt 20 connected to an external operating handle, the slide bar 18 slides in the U-shaped groove 19 of the guide rail 17, and the recess 23 formed on the upper surface of the slide bar 18 forms the recess 23. The guide sleeve 1 gradually overlaps the U-shaped notch 21 of the guide rail 17 according to the inclined surface, and the guide sleeve 1 is completely overlapped.
5 moves down to the movable mold plate 22 along the U-shaped notch 21 and the concave portion 23, so that the stamper replacement unit component 14 can be mounted on the movable mold plate 22.

As described above, according to the stamper exchanging apparatus for molding an optical disk in the first embodiment, the guide sleeve 15 on which the stamper exchanging unit component 14 is mounted.
Is guided by the inclined surface of the concave portion 23 of the slide bar 18 and smoothly descends. Further, the descending guide sleeve 15 is guided by the U-shaped notch 21 of the guide rail 17 to be displaced in the front-rear direction of the traveling direction. Does not occur,
By fitting the advance-restricting block 24 on the movable mold plate 22 ahead of the traveling direction with the stamper replacement unit component 14, lateral displacement in a direction perpendicular to the traveling direction can be prevented, and depending on the skill of the operator. Since the stamper replacement unit component 14 can be automatically lowered to the correct position of the movable mold plate 22 of the optical disk molding die, the replacement of the stamper is facilitated, the work efficiency is improved, and It does not damage the mold.

(Embodiment 2) FIG. 4 is a sectional side view showing a main part of an optical disk molding stamper changing apparatus according to Embodiment 2 of the present invention. Reference numeral 25 denotes a fixed side mold plate 26 of an optical disk molding die. It is a stamper replacement unit part. In the stamper replacement unit part 25, reference numeral 27 denotes a fixed mirror insert on which a stamper 29 is mounted on a mirror-shaped stamper mounting surface 28, and reference numeral 30 denotes a stamper on an outer peripheral portion of the fixed mirror insert 27 on which the stamper 29 is mounted. Reference numeral 31 denotes a rotating ring provided on an outer peripheral portion of the fixed-side mirror insert 27 for attaching the stamper replacement unit part 25 to the fixed-side template 26. Reference numeral 32 denotes a stamper replacement unit part 2.
5 is rotatably implanted in the fixed side template 26 superimposed on 5,
A bolt whose tip engaging portion 33 projects below the rotating ring 31 of the stamper replacement unit part 25 through the fixed side template 26 and the stamper replacement unit part 25, and a bolt 34 is provided in the upper surface plate 35 of the fixed side template 26. A spur gear that is provided rotatably and meshes with a screw hole 37 at the base of the bolt 32 in a center screw hole 36, a rack 38 meshes with the spur gear 34,
Reference numeral 9 denotes a fixed side plate of the fixed side template 26 through which the bolt 32 passes.

FIGS. 5 (a), 5 (b) and 5 (c) are partial top views of FIG. 4 in accordance with the order of mounting the stamper replacement unit parts 25 to the fixed side template 26, and are the same as those of FIG. Are denoted by the same reference numerals, and description thereof is omitted. 40 is a spur gear 3
A rack driving bolt rotatably mounted in the longitudinal direction of the rack 38 meshing with 4, a handle 41 mounted on the tip of the rack driving bolt 40, and a mounting 42 of the rack driving bolt 40 to the rack 38. The screw part 43 fixed on the rack driving bolt 40 between the part and the tip handle 41, the rack driving bolt 40 at the part between the screw part 42 and the tip handle 41 penetrates,
Is a holder block having a screw hole 44 for meshing.

In order to mount the stamper replacement unit component 25 on the fixed side mold plate 26 of the optical disk molding die in the optical disk molding stamper replacement apparatus having the above-described configuration, first, as shown in FIG. Drive bolt 40
When the handle 41 attached to the tip of the spur gear is not pulled, the spur gear 34 is not rotated. Therefore, the bolt 32 in which the threaded portion 37 of the base meshes with the screw hole 36 of the spur gear 34 does not move. As shown in FIG. 4, the tip engaging portion 33 of the bolt 32 is separated from the lower side of the rotating ring 31 of the stamper replacement unit component 25, and the stamper replacement unit component 25 is fastened and fixed to the fixed side template 26. Not a state.

Next, as shown in FIG. 5B, when the operator pulls the handle 41 attached to the tip of the rack driving bolt 40 by hand, the spur gear 34 is moved by the rack 38.
Rotate, and the screw portion 37 at the base of the bolt 32 meshed with the screw hole 36 of the spur gear 34 in FIG. 4 is driven to raise the bolt 32, and the stamper replacement unit component by the tip engaging portion 33 of the bolt 32. Tightening of the rotary ring 31 of the stamper 25 is started, and fastening and fixing of the stamper replacement unit component 25 to the fixed side template 26 is also started. However, in order to maintain this state, the operator manually inserts the handle 41 attached to the tip of the rack driving bolt 40.
There is a limit to pulling.

Therefore, in order to fix the final tightening, as shown in FIG. 5 (c), the operator manually mounts the handle 41 attached to the tip of the rack driving bolt 40 by hand.
After the screw portion 42 fixed on the rack driving bolt 40 is further pulled to a position where the screw portion 42 can mesh with the screw hole 44 of the holder block 43, the operator rotates the handle 41, and FIG. Spur gear 34 at
Is maintained, and the fastening of the stamper replacement unit component 25 to the rotating ring 31 by the tip engaging portion 33 of the bolt 32 can be finally fixed.

As described above, according to the stamper exchanging apparatus for molding an optical disc in the second embodiment, the operation of fastening the stamper exchanging unit component 25 to the fixed side mold plate 26 is performed by the rack drawn out of the optical disc molding die. Since it can be carried out by the handle 41 at the tip of the driving bolt 40, a drop of a wrench or the like that occurs when the operator tightens the bolt from the parting surface side of the optical disc molding die as in the related art. The problem is eliminated, and the tightening operation is safe and easy.

[0023]

As described above, according to the stamper exchanging apparatus for molding an optical disk of the present invention, the exchanging operation of the stamper becomes easy irrespective of the skill of the operator, the operation efficiency is improved, and The mold is not damaged, and the stamper replacement unit parts can be fastened to the optical disc molding mold from outside the mold, eliminating the problem of dropping a wrench, etc., making the tightening work safe and easy. It becomes.

[Brief description of the drawings]

FIG. 1 is a top view of an optical disk molding stamper exchange device according to a first embodiment of the present invention.

FIG. 2 is a partial sectional view of FIG. 1;

3 is a state explanatory diagram in each state of a part of FIG. 1;

FIG. 4 is a side sectional view of a main part of an optical disk molding stamper changing apparatus according to a second embodiment of the present invention.

FIG. 5 is a partial top view in each state of FIG. 4;

FIG. 6 is a side sectional view of a conventional optical disk molding die.

[Explanation of symbols]

 1,14,25 Stamper replacement unit parts 2,22 Movable mold plate 3,26 Fixed mold plate 4,27 Fixed mirror insert 5,28 Stamper mounting surface 6,29 Stamper 7 Stamper holder 8,30 Outer ring 9, Reference Signs List 31 rotating ring 10 movable mirror insert 11, 13, 16, 20, 32 bolt 12, 39 fixed plate 15 guide sleeve 17 guide rail 18 slide bar 19 U-shaped groove 21 U-shaped notch 23 recessed part 24 advance limited block 33 Tip engaging part 34 Spur gear 35 Top plate 36,44 Screw hole 37,42 Screw part 38 Rack 40 Rack drive bolt 41 Handle 43 Holder block

Continued on the front page F term (reference) 4F202 AH38 AH79 CA11 CB01 CK41 CR01 CR03 5D121 AA02 DD05 DD13 DD18 GG28 JJ06 JJ08

Claims (4)

[Claims] 1. A stamper replacement unit component in which a stamper is mounted in advance on a built-in stamper mounting surface is run on two parallel guide rails, and is provided on a lower surface of its traveling path in parallel with the stamper replacement unit component. An optical disk molding stamper exchange device for lowering a stamper exchange unit component at a position of a movable mold plate of an optical disc molding die and mounting the stamper exchange unit component on the movable mold plate. 2. On both sides of a stamper replacement unit part,
A guide sleeve that slides on two parallel guide rails is provided, a slide bar that slides in a groove of the guide rail is provided, and a concave portion formed by an inclined surface is provided on an upper surface of the slide bar. A U-shaped notch is formed on both sides of the guide rail at a position where the stamper replacement unit part that travels toward the movable mold plate is to be lowered, and a concave portion on the upper surface of a slide bar that slides in the groove of the guide rail. The U-shaped cutouts on both side surfaces of the guide rail are overlapped, and the stamper replacement unit part traveling on the guide rail and having reached the overlapped position can be lowered toward the movable mold plate. The stamper changing device for molding an optical disc according to the above. 3. A stamper replacement unit component in which a stamper is previously mounted on a built-in stamper mounting surface is superimposed on a fixed side template of an optical disk molding die, and the fixed side template and the stamper replacement unit component are passed through the fixed side template. By installing a bolt with a tip engaging part protruding below the stamper replacement unit part so that it can rotate freely, and raising and lowering the bolt,
In an optical disk molding stamper exchange device for fastening and fixing a stamper exchange unit component to a fixed side template,
An optical disk molding stamper exchange device in which the upper and lower bolts are engaged by screwing the screw portion at the base of the bolt into the center screw hole of a spur gear rotated by a rack driven from the outside of the optical disk molding die. 4. The rack block according to claim 3, wherein the rack driving bolt is rotatably mounted in the longitudinal direction of the rack, and a holder block having a screw hole meshing with a screw portion fixed in the middle of the rack driving bolt is provided. Stamper exchange device for optical disk molding.