Die for molding disc substrates and mirror panel there of and disc
A technology for forming molds and mirror panels, which is applied in the manufacture of optical record carriers and optical record carriers, and can solve problems such as poor touch, air bubbles in the outer periphery of the optical disc substrate, and easy breakage
Inactive Publication Date: 2008-11-26
MEIKI
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] However, the cavity forming surface of the fixed mold in the above-mentioned Patent Document 1 includes different components of the fixed mirror panel 9 and the outer ring 11 of the fixed mirror panel, so there is a gap between the aforementioned components 9 and 11, and it will be separated from the signal surface or the outer ring 11 of the fixed mirror panel during molding. The read surface is perpendicular to the surface, while slightly forming a prominent burr problem in the vertical direction
In addition, in the aforementioned Patent Document 2, the cavity forming surface of the movable mold includes the movable side stamper 23 and the side of the movable side stamper outer peripheral fixed ring portion 25b, etc. During forming, a horizontal burr is formed along the signal surface. When the mold is released, the aforementioned burr has the problem of curling in the vertical direction and forming a burr in the vertical direction.
Moreover, Patent Document 1 and Patent Document 2 do not indicate the dimensions of the end face protrusion 11a. When the front end of the end face protrusion 11a is too angled, when the molten resin is injected, protrusion deformation will be formed due to resin pressure, and a fixed mirror will occur. The problem that the outer ring 11 of the panel is stuck; when the width of the front end of the end face protrusion 11a is too large, the burr will be lower than the signal surface or the reading surface and it is easy to break, or the protruding burr will cause poor touch. Defective problem that air bubbles may occur on the outer periphery of the disc substrate
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] refer to Figure 1 to Figure 4 Embodiments of the present invention are described. figure 1 It is a cross-sectional view of an optical disc substrate molding die of this embodiment. figure 2 It is an enlarged cross-sectional view of the pivot portion of the optical disk substrate molding die of the present embodiment. image 3 It is an enlarged cross-sectional view of the pivot portion of the optical disk according to this embodiment. Figure 4 It is the result of the forming test of the optical disc substrate forming die according to the present embodiment. also, Figure 5 It is an enlarged cross-sectional view of a pivot portion of an optical disc substrate molding die in another embodiment.
[0020] The optical disc substrate forming mold 10, which includes a figure 1 , figure 2 The movable mold 11 of the movable plate of the injection molding machine on the left side, but not marked on the drawing, and the fixed mold 31 of the fixed plate on the right side b...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a solving method of projected deckle-edge of disc base reading surface toward perpendicular and vertical direction, which is characterized by the following: the relative position of mirror board (34) can be moved corresponding to peripheral ring (18) when the disc base forms fixed mould (31) and cavity (C1); the mirror board (34) contains peripheral imbedded part (38) inserted in the peripheral ring (18), which forms ring-shaped projecting part (39) from cavity surface (37) to project the arc (39c).
Description
technical field [0001] The present invention relates to an optical disc substrate molding die used for injection molding a data-recording optical disc substrate, a mirror plate of the optical disc substrate molding die, and an optical disc formed and bonded by the optical disc substrate molding die. Background technique [0002] When forming the cavities of the fixed mold and the movable mold for molding the optical disc substrate, the outer peripheral ring of either one of the fixed mold and the movable mold can be placed on the fixed mold and the movable mold. The mirror plate of any one of the movable molds can move towards the relative position, and adopts the optical disc substrate forming mold configured to change the volume of the aforementioned cavity. [0003] However, the aforementioned optical disc substrate forming mold has a problem of burrs between the outer peripheral ring of one mold and the mirror plate configured to move the outer peripheral ring toward a r...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/26G11B7/26G11B7/24027G11B7/24047
Inventor 蛯名利幸
Owner MEIKI