JP3916866B2 - Optical disc mold - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical disk mold, and more particularly to a multi-cavity mold.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a case where, for example, two-piece molding is performed in an optical disk molding die, as shown in FIG. 2, a mold product section 16 including a fixed side mirror block 1 and a movable side mirror block 6 sandwiching a plate 15 A structure in which two so-called single-cut molds provided with 17 are arranged side by side has been used. In the figure, 4 is a stamper mounted on the surface of the fixed mirror block 1, 5 is an outer ring for fixing the outer periphery of the stamper 4, 10 is a sprue, and 11 is a runner.
[0003]
[Problems to be solved by the invention]
However, in the case of the above-described mold structure, the mold product part 16 and the mold product part 17 are integrated with the plate 15 and are therefore easily affected by heat. There is a problem that it is difficult to accurately perform temperature control control, which is a difficult control. In addition, in the case of small lot production, it takes time to change the die because of the need to change the stamper when switching between different models, or when the product model is different, the product section itself needs to be replaced. In other words, in the case of the conventional mold structure, after removing the mold once from the molding machine, the work of disassembling the mold, reassembling the necessary parts and reattaching it to the molding machine is necessary. The problem was that time was spent and the actual production operation time was shortened.
[0004]
[Means for Solving the Problems]
Therefore, in order to solve the above problems, the present invention divides the fixed-side mirror block and the movable-side mirror block into left and right in a vertical division space provided at the center of the mold, and separates left and right as the fixed-side unit and the movable-side unit. By forming units, the left and right units are less susceptible to heat, the fixed unit is a cassette-type replacement unit for exchanging stampers, and the movable side unit is also a cassette-type replacement unit. It is possible to provide a molding die capable of exchanging the die while attached to the machine.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention is an optical disc molding die for molding a plurality of two optical discs with one molding machine.
One fixed-side mounting plate, a fixed-side first mirror block mounted on the fixed-side mounting plate via a fixed-side first temperature control means, a first stamper mounted on the fixed-side first mirror block, and the fixed side A fixed-side second mirror block attached to the mounting plate via a fixed-side second temperature control means; a second stamper attached to the fixed-side second mirror block;
One movable-side mounting plate, a movable-side first mirror block attached to the movable-side mounting plate with a clamp, a movable-side first temperature control circuit attached to the movable-side first mirror block, and the movable-side mounting plate A movable mold second mirror block attached to the clamp and a movable second temperature control circuit attached to the movable second mirror block to form a molding die,
With the fixed-side first temperature control means mounted on the fixed-side mounting plate, only the first fixed-side mirror block is removed, and the first stamper can be detached from the molding machine so that the fixed-side second temperature can be removed. With the adjustment means mounted on the fixed-side mounting plate, only the second fixed-side mirror block is removed, and the second stamper can be detached from the molding machine so that the movable-side first temperature adjustment means and the movable-side An optical disc characterized in that the first mirror block can be removed from the movable side mounting plate, and the movable side second mirror block can be removed from the movable side mounting plate together with the movable side second temperature control means. In the mold, the fixed-side mirror block and the movable-side mirror block are divided into left and right by a vertical dividing space, and each unit is made into an independent unit. Since the temperature of the left and right units can be controlled individually by reducing the induction and making them less susceptible to heat effects, stable molding is possible, and the fixed side unit and the movable side unit can be replaced by the cassette method. Therefore, since it becomes easy to detach from the molding machine, there is an effect that the mold change accompanying the product model change can be performed immediately and easily.
[0007]
Hereinafter, an embodiment of the present invention will be described with reference to FIG.
(Embodiment)
FIG. 1 shows the structure of an optical disk molding die of the present invention, and shows an embodiment using a two-piece molding die. As shown in FIG. 1, 1a, 1b in two cavity molding die, in a solid Jogawa first (left) mirror block 1a which is divided into right and left fixed side second (right) mirror block 1b, 2 is A sprue bush provided at the center of each of the fixed side first (left side) mirror block 1a and the fixed side second (right side) mirror block 1b , 3 is the fixed side first (left side) mirror block 1a and the fixed side fixed side mounting plate for mounting a second (right) mirror block 1b, 4 and the second (right) stamper mounted to the fixed side second (right) mirror block 1 b surface, but not (shown similarly first the fixed side first (left) mirror block 1a (left) stamper is attached), 5 the outer peripheral ring for fixing the outer peripheral portion of the stamper 4, 6 a, 6b the first movable-side is divided into right and left One (left side) mirror Click and the movable second (right) mirror block, 7 ejector pin, 8 fixed first (left) mirror block 6a movable, the movable second (right) mirror block 6b on the movable side mounting plate which will be described later clamping, 9 movable side mounting plate, 10 is a sprue, 11 a runner, 12 a solid Jogawa first (left) mirror block 1a, the fixed-side second (right) mirror block 1b and the left and right movable side first ( The left side is a divided space for dividing the mirror block 6a and the movable second (right side) mirror block 6b in the vertical direction at the center of the mold, 13 is an air pipe, and 14 is a temperature adjusting means.
[0008]
In this embodiment, the solid Jogawa first (left) mirror block 1a, the second (right) mirror block 1b fixed side, by a central division space 12 is divided into left and right, independent fixed side unit 1A, 1B is formed. Similarly, variable dynamic side first (left) mirror block 6a, also movable second (right) mirror block 6b, is divided into right and left by the divided spaces 12, independent movable unit 6A, to form the 6B. In addition, the air pipe 13 and the temperature control means 14 (not shown) are also provided independently for each unit, and more specifically, they are classified and not shown by reference numerals, but are fixed as shown in FIG. The side units 1A and 1B have fixed side first (left side) temperature control means and fixed side second (right side) temperature control means, respectively, and the movable side units 6A and 6B have movable side first (left side) temperature control means and Since the movable side second (right side) temperature control means is provided, it is configured to be individually controlled.
[0009]
Thus, according to the present embodiment, since the left and right fixed units 1A and 1B and the movable units 6A and 6B are divided by the divided space 12, heat conduction between the left and right units can be reduced. The temperature control in each unit can be performed accurately. Further, the movable side first (left side) mirror block 6a and the movable side second (right side) mirror block 6b can be detached from the molding machine by removing the clamp 8 and detaching from the movable side mounting plate 9, so that the molding machine The movable-side units 6A and 6B can be exchanged by the cassette method while the mold is attached to. Similarly, by removing the fixed side first (left side) mirror block 1a and the fixed side second (right side) mirror block 1b from the fixed side mounting plate 3, the fixed side units 1A and 1B are molded by the cassette method when the stamper is replaced. It becomes possible to detach from.
[0010]
In the above embodiment, the two-piece mold has been described. However, the present invention is not limited to the two-piece mold.
[0011]
【The invention's effect】
According to the present invention, the fixed-side mirror block and the movable-side mirror block are divided into left and right by a vertical dividing space, and are made into independent units, thereby reducing the heat conduction between the left and right units and reducing the thermal effect between each other. Since it is hard to receive, the temperature can be controlled individually, so stable molding is possible, and the fixed unit and the movable unit can be replaced by the cassette method, making it easy to detach from the molding machine In addition, there is an effect that the mold change accompanying the product model change can be made immediately and easily.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a two-piece mold according to an embodiment of the present invention.
FIG. 2 is a schematic view showing a conventional two-piece mold.
[Explanation of symbols]
1A, 1B Fixed side unit 1a, 1b Left and right fixed side mirror block 2 Sprue bush 2a Sprue bush mounting port 3 Fixed side mounting plate 4 Stamper 5 Outer ring 6A, 6B Movable side units 6a, 6b Left and right movable side mirror block 7 Ejector pin 8 Clamp 9 Movable side mounting plate 10 Spru 11 Runner 12 Divided space 13 Air piping 14 Temperature control means 15 Plate 16 Mold product part 17 Mold product part

Claims (1)

In an optical disk molding die for molding a plurality of two optical disks with one molding machine,
One fixed-side mounting plate, a fixed-side first mirror block mounted on the fixed-side mounting plate via a fixed-side first temperature control means, a first stamper mounted on the fixed-side first mirror block, and the fixed side A fixed-side second mirror block attached to the mounting plate via a fixed-side second temperature control means; a second stamper attached to the fixed-side second mirror block;
One movable-side mounting plate, a movable-side first mirror block attached to the movable-side mounting plate with a clamp, a movable-side first temperature control circuit attached to the movable-side first mirror block, and the movable-side mounting plate A movable mold second mirror block attached to the clamp and a movable second temperature control circuit attached to the movable second mirror block to form a molding die,
With the fixed-side first temperature control means mounted on the fixed-side mounting plate, only the first fixed-side mirror block is removed, and the first stamper can be detached from the molding machine so that the fixed-side second temperature can be removed. With the adjustment means mounted on the fixed-side mounting plate, only the second fixed-side mirror block is removed, and the second stamper can be detached from the molding machine so that the movable-side first temperature adjustment means and the movable-side An optical disc characterized in that the first mirror block can be removed from the movable side mounting plate, and the movable side second mirror block can be removed from the movable side mounting plate together with the movable side second temperature control means. Molding mold.

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