WO2011091647A1

WO2011091647A1 - Stamping device

Info

Publication number: WO2011091647A1
Application number: PCT/CN2010/074914
Authority: WO
Inventors: 杨明生; 谢威武; 王勇
Original assignee: 东莞宏威数码机械有限公司
Priority date: 2010-01-29
Filing date: 2010-07-02
Publication date: 2011-08-04
Also published as: CN101833963B; CN101833963A

Abstract

A stamping device comprises a moveable mould (100), a fixed mould (300) matching to the moveable mould (100), and a radial retracting mechanism (500) for releasing the mould mounted in the center of the fixed mould (300). The radial retracting mechanism (500) for releasing the mould comprises an elastic element (510), an inclined block (520) and radial retracting elements (530). The upper ends of these radial retracting elements (530) project out and pass through a central hole of a disk (400) and form hooks (532) for holding the disk (400) by being horizontally bended outward. The moveable mould (100) is pressed, so as to drive the axial core (120) of the moveable mould to press the inclined block (520), and the inclined block (520) will drive these radial retracting elements (530) to pivot, so that these hooks (532) are driven to the position that is directly above the central hole of the disk (400) and the disk (400) is released.

Description

Molding device

The present invention relates to an optical disc production system, and more particularly to a compression molding apparatus for an optical disc. Background technique

With the continuous expansion of the information storage capacity of optical storage media, the production technology of optical storage media has also flourished. The production of BD50 optical disc production system and DVD9 optical disc production system, for example, produces BD50 optical disc system: injection molding machine 1 After the 1mm thick substrate is cooled by the cooling belt, the total reflection layer is sputtered, then the glue layer of the 23um space layer is spin-coated, UV-cured, and then the 2um glue replication layer is spin-coated to enter the compression molding device to copy the information layer. Then, a semi-reflective layer is sputtered, then a 75 um cover layer is spin-coated, UV-cured, and then a 2 um hardcoat protective layer is applied, UV-cured, anti-disc, sputtered SiN waterproof layer, on-line detection and grading storage. Another typical production system for DVD9 includes: L0 substrate for DVD9 from one injection molding machine, and L1 substrate for DVD9 for another injection molding machine. In two sputtering stations, L0 is splashed in a sputtering station. A semi-reflective layer is plated, L1 is sputtered with a total reflection layer in another sputtering station, and the LI disc is coated with a layer of adhesive in the adhesive coating station, which is then sent to the bonding device, L0 and Li The discs are bonded together, and the bonding device comprises an adhesive component having an automatic eccentricity function and a high-voltage electrostatic device, followed by a thousand glue, UV curing, bonding to a complete DVD disc, and finally through on-line inspection and finished product grading storage. .

Compression molding technology is used in almost every format of disc production in many disc formats. In the current scheme, after the compression molding process is completed, only the blowing method is adopted during the demolding. The master disc for copying information is separated from the disc to be pressed, that is, compressed air is introduced between the master disc and the disc through the air blowing interface, and the disc is blown off by air pressure. Under normal conditions, this method can successfully complete the demoulding, but due to the instability of the compressed air itself, the inconsistency of the viscosity and shrinkage of the glue, the change of the ambient temperature and humidity during the process implementation and the influence of various other uncertain factors. The phenomenon that the mold release is unsuccessful or the blow time is lengthened before the mold is completed can be demoulded successfully. ^The occurrence of these phenomena may affect the yield or affect the production cycle. Therefore, it is necessary to provide a mold release apparatus which is easy to release to overcome the above drawbacks.

Invention

In order to achieve the above object, the technical solution of the present invention is: providing a compression molding apparatus including a movable mold and a fixed mold, wherein the movable mold is located directly above the fixed mold, and the movable mold center is provided with movement a mold core, the fixed mold center is provided with a fixed mold core, the movable mold core is opposite to the fixed mold core, and the movable mold is provided with a mother coaxial with the movable mold core a disc to be pressed on the fixed mold, the disc to be pressed coaxial with the fixed mold core, the master corresponding to the disc and located in the fixed mold and the 3⁄4

Heart groove, the fixed mold is opened in the center at a fixed mold

The upper end of the movable mold core is fixed in the G slot, the lower end of the movable mold core protrudes from the central slot of the movable mold, and the upper end of the movable center slot is opened with the movable mold center The air flow is connected to the through hole, and the air flow enters the through hole from the air blowing interface, and flows from the air flow channel to between the master disk and the disk, wherein the pressure is The mold device further includes a radial telescopic demolding mechanism, the radial telescopic mold release mechanism comprising an elastic member, a diagonal block and a radial expansion member, wherein the elastic member and the oblique block are sequentially sleeved on the fixed mold a lower end of the elastic element is in contact with a bottom of the fixed mold center groove, an upper end of the elastic element is in contact with a lower end of the inclined block, and an upper end surface of the inclined block is detachably engaged with the At an upper end of the fixed mold core, the inclined block is opposite to the movable mold core, and the radial expansion member is pivotally connected to the fixed mold center and centered on the fixed mold core The block has a bent fit s, the inclined block is located at the fixed mold core and the radial expansion and contraction The upper end of the radial expansion member protrudes and passes through the center hole of the disc and horizontally outwardly to form a hook for pressing the disc, and the movable mold is pressed to make the movable mold core Pressing the inclined block, the inclined block, the hook moves to directly above the center hole of the disc to release the pressing of the disc.

In one embodiment, the radial expansion member has an upper inclined arm and a lower inclined arm formed at an upper end of the upper inclined arm, and the end of the radial inclined arm is connected with the upper end of the lower inclined arm to form a sloped surface. a bending structure, the bending angle is greater than 90 degrees, and the protrusion protrudes from the convex portion that cooperates with the bending structure. The radial expansion member is pivotally connected to the center of the fixed mold The pivoting position is the connection between the upper inclined arm and the lower inclined arm. When pressing the mold, pressing the movable mold causes the movable mold core to press the inclined block, and the convex portion of the inclined block a lower inclined arm of the radial expansion member is actuated during the pressing process, and the radial expansion member is pivotally moved to a position above the central hole of the die plate with the pivotal position of the fixed mold center groove as a fulcrum Pressing of the disc; when demolding, the inclined block pushes up the upper inclined arm of the radial telescopic member under the elastic force of the elastic member, so that the radial telescopic member is pivotally connected to the fixed mold center slot The fulcrum is swung to the position where the disc is pressed, and the disc is hooked to disengage the disc from the master disc, and the separation of the master disc and the disc during the demolding is quickly and conveniently realized by the hooking action of the telescopic member. The stability of demolding is enhanced.

Preferably, the radial expansion members are two, and the two radial expansion members are symmetrically distributed with the center of the fixed mold core as a center. The distance between the hooks of the two radial expansion members is greater than the diameter of the center hole of the disc, and the hook pulls the disc so that the master and the disc are separated when demolding. Pressing the movable mold to press the movable mold core to press the inclined block, the inclined block driving the radial expansion member to rotate to move the pull hook directly above the center hole of the disc, two The distance between the hooks of the radial expansion member is smaller than the diameter of the center hole of the disc to release the pressing of the disc, and the diametrical direction of the center hole of the disc is obtained by the hooks of the two symmetrically distributed radial expansion members The two ends achieve the suppression of the disc, and the stability of the pressed disc is enhanced, so that the separation of the master disc and the disc is more stable and reliable.

Preferably, a screw hole is formed in an end surface of the free end of the fixed mold core, and the screw is correspondingly provided with a screw, and the screw and the oblique block are in contact with each other through a screw and a screw hole, thereby facilitating the elastic component and the oblique The installation and replacement of the block, the position of the inclined block is adjusted by adjusting the screw, so that the radial expansion member can be conveniently adjusted to move to the position of the disc, and the purpose of pulling the disc is achieved.

Preferably, the elastic element is a spring.

Compared with the prior art, since the die pressing device of the present invention adds a radial stretching mechanism at the center of the fixed mold, the radial stretching and releasing mechanism includes an elastic member, a diagonal block and a radial stretching member, and the elastic member And the inclined block is sequentially sleeved on the fixed mold core, the lower end of the elastic element is in contact with the bottom of the fixed mold center groove, and the upper end of the elastic element is in contact with the lower end of the inclined block. An upper end surface of the inclined block is detachably engaged with an upper end of the fixed mold core, and the inclined block is opposite to the movable mold core The radial expansion member is pivotally connected to the fixed mold center groove and is in a bending engagement with the inclined block. The inclined block is located at the fixed mold core and the said Between the radial expansion members, the upper end of the radial expansion member protrudes and passes through the center hole of the disc and is bent horizontally outward to form a hook for pressing the disc, which is compact in structure, when molding Pressing the movable mold to press the movable mold core to press the inclined block, the inclined block driving the radial expansion member to rotate, and the sliding hook is moved to the center hole of the disc The upper part releases the suppression of the disc. When demolding, the inclined block drives the radial expansion member to rotate under the action of the restoring force of the elastic member to move the hook to the position where the disk is pulled, and the disc is separated from the master quickly and conveniently. Come, avoid the phenomenon of unsuccessful demoulding that existed before, and ensure the stability of demoulding. DRAWINGS

Figures la-Id are state diagrams of the compression molding apparatus of the present invention.

Figure 2a is an enlarged view of a portion A of Figure lb.

Figure 2b is an enlarged view of a portion B of Figure lc.

3a and 3b are schematic views showing the principle of the radial expansion member of the compression molding device of the present invention mated with the oblique block.

The features of the present invention are described in detail with reference to the accompanying drawings, in which FIG. As described above, the die-pressing device provided by the present invention adds a radial expansion mechanism at the center of the fixed mold on the basis of the blow-off mold release, and the pull-tab is pulled by the pull hook during the demolding by the radial change of the radial expansion mechanism. The sheet is separated from the disc to achieve the purpose of rapid demolding, and the radial telescopic mechanism has a simple and compact structure, which makes the demoulding device demoulding easy and quick, and avoids the unsuccessful demoulding phenomenon existing before, ensuring The stability of demolding.

Referring to Figures ia-ld, the compression molding apparatus of the embodiment of the present invention includes a movable mold 100 and a fixed mold 300 which are engaged with each other, and the movable mold 100 is located directly above the fixed mold 300, and the center of the movable mold 100 is provided with movement Die core! 20, the movable mold 100 is provided with a master 200 coaxial with the movable mold core 120, and a lower end of the movable mold 100 is provided with a movable mold center groove 110 at a center thereof, and the movable mold core 120 Located in the middle of the movable mold center slot 110, specifically, the upper end of the movable mold core 120 can be fixed by the screw connection In the movable mold center groove 110, a lower end of the movable mold core 120 protrudes from the movable mold center groove 110, and an air flow passage 130 is formed between the movable mold core i20 and the movable mold center groove U0. The upper end of the movable mold 100 is provided with a through hole 140 communicating with the central groove 110 of the movable mold. The movable mold 100 is mounted with a blowing interface 150 communicating with the through hole 140, and the airflow enters from the air blowing interface 150. The through hole 140 flows from the air flow passage 130 to between the master 200 and the disc 400.

Referring to FIG. 2a 2b in detail, a center of the fixed mold 300 is provided with a fixed mold core 310, and the movable mold core 310 is opposite to the movable mold core 120, and the fixed mold 300 is provided with The fixed mold core 310 is coaxial with the disc 400 to be pressed, and the master 200 corresponds to the disc 400 and is located between the fixed mold 300 and the movable mold 100, and the fixed mold 300 is at the center. A fixed mold center groove 320 is opened, and the fixed mold core 310 is fixed at the center of the bottom of the fixed mold center groove 320. The stamping device further includes a radial telescopic mold mechanism 500 including an elastic member, a tilt block 520, and a radial stretch member 530. In an embodiment of the invention, the elastic member a spring 510, the spring 510 and the inclined block 520 are sequentially sleeved on the upper end of the fixed mold core 310, and the lower end of the spring 510 is in contact with the bottom of the fixed mold center groove 320, and the upper end thereof is The lower end of the inclined block 520 is in contact with the upper end of the fixed mold core 310. Preferably, the fixed mold core 310 is provided with a screw hole 312. The screw 312 is correspondingly provided with a mating screw 314 into which the screw 314 is screwed, and the screw 314 is in contact with the inclined block 520. By the cooperation of the screw 314 and the screw hole 312, the installation and replacement of the spring 510 and the inclined block 520 are facilitated, and the position of the inclined block 520 is adjusted by the adjusting screw 314. The inclined block 520 is opposite to the movable mold core 120. The end of the movable mold core 310 is corresponding to the portion of the radial expansion member 530 and the fixed shaft core 310. Therefore, the movable mold core 120 only acts on the inclined block 520 and is not connected to the radial expansion member 530. The radial expansion member 530 is pivotally connected to the fixed mold core 310 and is engaged with the bending block 520 in a bending manner. The inclined block 520 is located at the center of the fixed mold core 310. Between the fixed mold core 310 and the radial expansion member 530, the upper end portion of the radial expansion member 530 protrudes and passes through the center hole of the disc 400 and is bent outwardly and horizontally to form a bend. Pressing the pull hook 532 of the disc 400, pressing the movable mold 100 to press the movable mold core 120 to press the inclined block 520, and the inclined block 520 acts on the radial expansion and contraction during the pressing process. The piece 530 drives the radial expansion member 530 to rotate: the pull hook 532 moves to the The pressing of the disc 400 is released directly above the center hole of the disc 400. Specifically, the radial expansion member 530 has an upper inclined arm 534 and a lower inclined arm 536. The pull hook 532 is formed at an upper end of the upper inclined arm 534, and the lower end of the upper inclined arm 534 and the lower inclined arm The upper end of the 536 is connected to form a beveled structure having a beveled surface, the bending angle is greater than 90 degrees, and the oblique block 520 protrudes from the convex portion 52i that cooperates with the curved #-shaped structure, and correspondingly, the oblique portion The convex portion 521 of the block 520 has a first inclined surface 522 corresponding to the upper inclined arm 534 and a second inclined surface 524 corresponding to the lower inclined arm 536, and the radial expansion member 530 is pivotally connected to the center of the fixed mold The pivotal position within the slot 320 is the junction of the upper bevel arm 534 and the lower bevel arm 536 that forms a pivot point 538 for the rotational movement of the radial telescoping member 530. As an embodiment of the present invention, the number of the radial expansion members 530 is one. When the mold is pressed, the movable mold 100 is pressed to press the movable mold core 120 to press the inclined block 520, and the inclined block 520 The convex portion 521 acts on the lower inclined arm 536 of the radial expansion member 530 during the pressing process, and the radial expansion member 530 is pivotally moved to the disc with the pivotal position of the fixed mold center groove 320 as a fulcrum 538. The pressing of the disc is released directly above the center hole of the 400; when the mold is released, the inclined block 520 pushes up the upper inclined arm 534 of the radial expansion member 530 by the elastic force of the spring 510, so that the radial expansion and contraction The member 530 is pivotally swung from the pivoting position of the fixed mold center slot 320 as a fulcrum 538 to a position where the disc 400 is pressed, and the disc 400 is hooked to disengage the disc 400 from the master 200. The action of the hook 532 of the member 530 quickly and conveniently realizes the separation of the master 200 from the disc 400 during demolding, thereby enhancing the stability of demolding. As a preferred embodiment of the present invention, the radial expansion members 530 are two, and the two radial expansion members 530 are symmetrically distributed around the fixed mold core 310. The distance d between the hooks 532 of the two radial expansion members 530 is larger than the diameter D of the center hole of the disc 400, and the hook 532 pulls the disc 400 so that the master 200 and the disc 400 are separated when demolding. . Pressing the movable mold 100 causes the movable mold core 120 to press down the inclined block 520, and the inclined block 520 drives the radial expansion and contraction member 530 to rotate to move the pull hook 532 to the disc 400. Directly above the center hole, the distance d between the hooks 532 of the two radial expansion members 530 is smaller than the diameter D of the center hole of the disc 400 from the release of the disc 400, and the radial expansion and contraction through the two symmetric distributions The hook 532 of the member 530 realizes the pressing of the disc 400 from both ends in the diameter direction of the center hole of the disc 400, thereby enhancing the stability of the pressing disc 400, thereby making the separation of the master 200 and the disc 400 more stable. reliable.

With continued reference to FIG. 1A, a compression molding apparatus having two radial expansion members 530 according to an embodiment of the present invention is For example, the working principle of the stamping apparatus of the present invention is as follows: As indicated by the arrow in FIG. 1a, when the stamper starts, the movable mold 100 presses the fixed mold 300, and the disc 400 to be copied is located on the fixed mold 300 and is fixed. The shaft core 310 is concentric, and the inclined block 520 is in contact with the screw 314. The first inclined surface 522 and the second inclined surface 524 of the inclined block 520 are respectively engaged with the upper inclined arm 534 and the lower inclined arm 536 of the radial expansion member 530, and the movable mold 100 is descended. Movement, the end of the movable mold core 120 first contacts the inclined block 520 and presses the inclined block 520, the spring 510 is contracted downward by the pressure of the inclined block 520, and the second inclined surface 524 of the inclined block 520 is along the radial expansion member 530. The lower inclined arm 536 applies pressure to the radial expansion member 530 to swing the radial expansion member 530 around the fulcrum 538. Specifically, as shown in FIG. 3a, the lower inclined arm 536 swings outside the fixed mold core 310. A gap is formed between the inclined arm 536 and the second inclined surface, and the upper inclined arm 534 is brought closer to the fixed mold core 310, and the distance d between the two pull hooks 532 is gradually reduced, when the movable mold 100 is pressed against the fixed mold 300. As shown in FIG. 2B, the master 200 is pressed against the disc 400, and the distance d between the hooks 532 is smaller than the center hole of the disc. The diameter D, the telescopic member 530 radially projecting portion 300 of the stationary mold housed within the cavity in the movable mold portion 122 of the spool core. When demolding, as shown by the arrow in lc, the movable mold 100 moves upwards away from the fixed mold 300, and the disc 400 is pasted with the master 200 after pressing. The follower mold 100 moves upward, in the movable mold. During the 100-passing process, the movable mold core 120 relaxes the pressure on the inclined block 520 on the fixed mold core 310, and the inclined block 520 moves upward under the elastic force of the spring 510 and acts on the radial expansion member 530 around the fulcrum. The 538 swings, the lower inclined arm 536 is brought closer to the fixed mold core 310, and the upper inclined arm 534 is opened outwardly to the fixed mold core 310. As shown in FIG. 3b, a gap is formed between the upper inclined arm 534 and the first inclined surface, The distance d between the hooks 532 gradually becomes larger. When the movable mold 100 rises to a certain distance, the distance d between the two hooks 532 is larger than the diameter D of the center hole of the disc, and the disc 400 is in contact with the hook 532, and the hook 532 The disc 400 is pulled to release the disc 400 from the master 200 and fall back onto the stationary mold 300. While the demolding process is being performed, compressed air is supplied from the air blowing interface 150, and the airflow is blown. The air interface 150 passes through the through hole 140 in the movable mold 100, and passes through the gas between the fixed mold core 120 and the fixed mold center groove 110. Master flow passage 130 between the disc 400 and 200, blown toward the disc 400 because the disc 400 and the master pressure gas stream 200 to achieve separation. The separation of the master 200 from the disc 400 is successful as shown in FIG. The die-pressing device of the embodiment of the present invention not only separates the disc 400 from the master disc 200 by blowing air, but also pulls the disc 400 by the radial telescopic mechanism 500, thereby realizing quick and convenient demolding and enhancing demolding. stability. Compared with the prior art, since the compression molding apparatus of the present invention adds a radial expansion mechanism 500 at the center of the fixed mold 300, the radial expansion and release mechanism 500 includes a spring 510, a diagonal block 520, and a radial expansion member 530. The spring 510 and the inclined block 520 are sequentially sleeved on the fixed mold core 310, and the lower end of the spring 510 is in contact with the bottom of the fixed mold center groove 320, and the upper end of the spring 510 is The lower end of the inclined block 520 is in contact with each other, and the upper end surface of the inclined block 520 is detachably opposed to the upper end of the fixed mold core 310, and the inclined block 520 is opposite to the movable mold core i20, The radial expansion member 530 is pivotally connected to the fixed mold center groove 310 and is in a bending engagement with the inclined block 520. The inclined block 520 is located at the fixed mold axis. Between the core 310 and the radial expansion member 530, the upper end of the radial expansion member 530 protrudes and passes through the center hole of the disc 400 and is bent horizontally outward to form a hook for pressing the disc 400. 532, which is compact in structure, when the mold is pressed, pressing the movable mold 100 causes the movable mold core 120 to press down the inclined block 520, Radial block 520 drives the rotation of the telescopic member 530 to move the retractor 532 directly above the center hole of the disc 400 of the disc 400 is pressed ^. When the mold is released, the inclined block 520 rotates the radial expansion member 530 under the restoring force of the spring 510 to move the hook 532 to the position where the disk 400 is pulled, and the disk 400 is quickly and conveniently The master disc 200 is separated to avoid the occurrence of the unsuccessful demoulding that existed before, and the stability of the mold is ensured.

The above are only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and thus equivalent changes made in the claims of the present invention are still within the scope of the present invention.

Claims

L is a molding device comprising a movable mold and a fixed mold, wherein the movable mold is located directly above the fixed mold, the movable mold center is provided with a movable mold core, and the fixed mold center is fixed a mold core, the movable mold core is opposite to the fixed mold core, and the movable mold is provided with a master coaxial with the movable mold core, and the fixed mold is provided with a disc to be pressed coaxially with a fixed core, the master corresponding to the disc and located between the fixed mold and the movable mold, and a lower end of the movable mold is provided with a movable mold center at a center thereof a fixed mold center groove is formed in the center of the fixed mold, the fixed mold core is fixed at the center of the bottom of the fixed mold center groove, and the upper end of the movable mold core is fixed in the central groove of the movable mold a lower end of the movable mold core protrudes from the central groove of the movable mold, an air flow passage is formed between the movable mold core and the central groove of the movable mold, and an upper end of the movable mold is opened and a through hole communicating with the central groove of the die, wherein the movable die is mounted with a blowing interface communicating with the through hole, and the airflow enters from the air blowing interface a hole, flowing from the air flow channel to between the master plate and the disc, characterized by further comprising a radial expansion and release mechanism, wherein the radial expansion and release mechanism is wrapped on the shaft core, and the lower end of the elastic element Determining the bottom of the center groove of the mold, the upper end of the elastic member is in contact with the lower end of the inclined block, and the upper end surface of the inclined block is detachably engaged with the upper end of the fixed mold core, the inclined block Directly facing the movable mold core, the radial expansion member is pivotally connected to the fixed mold center centered on the fixed mold core and is in a bending engagement with the inclined block, the inclined a block is located between the fixed mold core and the radial expansion member, the upper end of the radial expansion member protrudes and passes through a center hole of the disc and is bent horizontally outward to form the disc Pulling the movable mold to press the movable mold core to press the inclined block, the inclined block driving the radial expansion member to rotate to move the pull hook directly above the center hole of the disc Release the suppression of the disc.

2. The compression molding apparatus according to claim 1, wherein the radial expansion member has an upper inclined arm and a lower inclined arm, and the pull hook is formed at an upper end of the upper inclined arm, the upper inclined arm The lower end is connected with the upper end of the lower inclined arm to form a beveled structure having a beveled surface, the bending angle is greater than 90 degrees, and the oblique block protrudes from the convex portion of the bent structure .

The compression molding apparatus according to claim 2, wherein the pivoting position of the radial expansion member pivotally connected to the centering groove of the fixed mold is the upper inclined arm and the lower inclined arm Junction.

4. The compression molding apparatus according to claim 1, wherein the radial expansion members are two, and the two radial expansion members are symmetrically distributed around the fixed mold core.

The die pressing device according to claim 1, wherein a screw hole is formed in an end surface of the free end of the fixed mold core, and the screw hole is correspondingly provided with a screw, and the screw is in conflict with the inclined block .