JP4093584B2 - Method and apparatus for forming hollow molded article having thin film on inner surface - Google Patents

Description

  The present invention uses a fixed mold and a movable mold movable with respect to the fixed mold to perform injection molding of a pair of semi-hollow bodies so that the openings have butted portions. Molding, vapor deposition forming a thin film on the inner surface of at least one of the pair of semi-hollow bodies molded by the primary molding, and opening of the pair of semi-hollow bodies after the vapor deposition molding is a concave portion of the mold And forming a hollow molded product having a thin film on the inner surface, which is formed by secondary molding in which the molten resin is injected into the butted portion and a pair of semi-hollow bodies are integrated to obtain a hollow body The present invention relates to a hollow molded product obtained by carrying out this molding method and a molding apparatus used for carrying out this molding method.

  Examples of the hollow molded product having a thin film on the order of several μm on a part of the inner surface of the hollow body include a front lamp, a tail lamp and the like installed in a vehicle. Such a lamp includes a concave main body portion to which a light bulb is attached and a lens portion that is integrally attached to an opening of the main body portion. The body is molded by, for example, injection molding, and unnecessary portions such as the outer surface are masked and suspended in a vacuum tank dedicated for vapor deposition using a dedicated hanger, and then a thin film is formed by a vapor deposition method as described below. Has been. Then, the main body part on which the thin film is formed and the separately molded lens part are set in the respective molds, and the opening of the main body part and the edge of the lens part are aligned and abutted, and the molten resin is joined to the abutted joint part. Are injected and integrated to form a hollow molded product having a thin film on the inner surface.

  A deposition method for forming a thin film on the inner surface of the main body or the surface of the substrate is well known in the art. For example, the substrate to be deposited is opposed to the target, and in an argon gas atmosphere of several Pa to several tens Pa. A sputtering method in which a negative voltage of several kV is applied to the target and then discharged to form a thin film, a vacuum deposition method in which a substrate and an evaporation source are housed in a vacuum vessel, and a negative voltage of several kV is applied to the substrate. For example, an ion plating method in which vacuum deposition is performed under the pressure of an argon gas of several Pa and a chemical vapor deposition method is also known.

No. 2-38377 Japanese Patent No. 3326752 Patent No. 3047213

  Patent Document 1 discloses a method for forming a hollow molded article by injection molding. That is, a primary molding in which a pair of semi-hollow molded products is formed by a pair of cavities constituted by a fixed mold and a slide mold so as to have a joint around the opening, and one semi-hollow molding. Open the mold so that the product remains on the fixed mold and the other semi-hollow molded product remains on the slide mold, and slide the slide mold to a position where the joints of the pair of semi-hollow molded products are aligned. And then a mold-clamping method comprising a step of clamping and then a secondary molding in which a molten resin is injected into a joint and then joined. Further, in Patent Document 2, in the molding method as shown in Patent Document 1, a guide portion is integrally molded inside the joint portion, that is, the butt portion of one half-hollow molded product at the time of primary molding, For secondary molding, when the butt portion of the other semi-hollow molded product is fitted to the butt portion of one semi-hollow molded product, the butt portion of the other semi-hollow molded product is butt-matched with one semi-hollow molded product. A forming method in which the guide is guided by the guide part of the part is shown. Further, in Patent Document 3, when a hollow molded product is molded as described above, a molding method in which an angle formed by a tangent at an injection filling point of a portion abutted at the time of secondary molding is smaller than 90 degrees is performed. It is shown.

When trying to form a hollow molded product having a thin film on the inner surface by the conventional forming method, the main body must be formed in advance by, for example, injection molding, and carried into a vacuum tank for vapor deposition. Many. For example, since the main body is molded and stored in advance, the surface to be vapor deposited during storage handling may have dirt or dust on the surface to be vapor deposited, which may cause vapor deposition failure. In order to avoid this, maximum care must be taken in handling, resulting in high costs. Moreover, since the main body part molded in advance is temporarily stored, there is a problem that inventory management is required. Furthermore, the main body part must be once taken out from the mold, evaporated, and then attached to the mold again to be joined, resulting in poor productivity.
On the other hand, the injection molding method disclosed in Patent Document 1 has an advantage that each process can be automated and a hollow molded product can be mass-produced, and a hollow molded product having a complicated shape can be manufactured. Further, according to the invention described in Patent Document 2, even if some deformation occurs in the abutting portion, the abutting portion can be closely abutted at the time of secondary molding, thereby preventing the resin for secondary molding from leaking. An effect is obtained. Furthermore, according to the invention described in Patent Document 3, the bonding strength is large, and there is a feature that bonding is possible even when there are few injection locations of the molten resin for secondary molding. Although having the above advantages or features, the above-described invention is still effectively implemented, but a thin film of the order of several μm cannot be formed on the inner surface of the hollow molded product by the conventional molding method.
The present invention applies the conventional injection molding method as described above, so that the vapor deposition surface is not contaminated, therefore there is no deterioration in quality due to poor vapor deposition, and no inventory control is required. An object of the present invention is to provide a method for forming a hollow molded product having a thin film on the inner surface, which is easy to perform automatic molding, a hollow molded product obtained by carrying out this molding method, and a molding apparatus used for carrying out this molding method. Yes.

In order to achieve the above-mentioned object, the present invention provides an inner surface of at least one half-hollow body of a pair of half-hollow bodies formed by a fixed-side mold and a moving mold. In such a state, a vapor deposition element is provided in the inside of the mold apparatus, and the vapor deposition is performed in the mold by covering with a vapor deposition chamber separate from the mold apparatus . And, the configuration is such that the deposited openings of the half-hollow body and the other half-hollow body are butted in a state where they are left in the respective molds, and the molten resin is injected and filled into the mating section. Is done.

That is, in order to achieve the above object, the invention according to claim 1 uses a fixed mold and a movable mold movable with respect to the fixed mold to form a pair of semi-hollow bodies. Primary molding that is injection-molded so as to have a butt portion at the opening, and one semi-hollow body of a pair of semi-hollow bodies molded by this primary molding is directed to the fixed mold, and the other half-hollow Opening the mold with the body remaining on the moving mold, and forming the thin film on at least one inner surface of the semi-hollow body, and the openings of the pair of semi-hollow bodies after the vapor-deposition molding It is a molding method consisting of secondary molding in which it is abutted in a state where it remains in the mold, and a molten resin is injected into the butted portion to integrate a pair of semi-hollow bodies to obtain a hollow body, After the primary molding, the mold is opened, and the semi-hollow body remaining in the mold is removed. Sealing means in the opening, and inside the vapor deposition element is provided, adapted to perform in a mold covered with deposition chamber of the mold apparatus and another member. According to a second aspect of the present invention, in the molding method according to the first aspect, a stationary mold and a slide mold provided to be slidable to the first and second molding positions with respect to the stationary mold. The invention according to claim 3 is configured as a hollow molded article having a thin film on the inner surface obtained by carrying out the molding method according to claim 1 or 2.
According to a fourth aspect of the present invention, there is provided a mold apparatus comprising a fixed mold and a movable mold provided to be movable to the first and second molding positions with respect to the fixed mold, and a vapor deposition apparatus A fixed side core and a fixed side recess for forming a pair of semi-hollow bodies are provided on the parting line side of the fixed side mold, and the parting line of the moving mold On the side, a moving side recess and a moving side core that cooperate with the fixed side core and the fixed side recess respectively are formed, and at the first molding position of the moving mold, the fixed side core and the moving side recess In addition, a semi-hollow body forming a pair is primarily formed by the fixed recess and the moving core, and remains in the fixed recess and the moving recess in the second molding position of the moving mold, respectively. Secondary molding in which the paired semi-hollow bodies are integrated In addition, the vapor deposition apparatus includes a vapor deposition chamber inserted between the parting lines when the mold is opened, and the fixed-side mold or the movable mold is provided in an opening of the vapor deposition chamber. Sealing means is provided on the parting line surface of the mold so as to surround the fixed concave portion or the movable concave portion and pressed in an airtight state, and a vapor deposition element is provided therein. According to a fifth aspect of the present invention, in the molding apparatus according to the fourth aspect, the movable mold is a movable mold in which the movable mold is rotatably provided to the first and second molding positions with respect to the fixed mold. Configured as follows.

As described above, according to the present invention, the inner surface of at least one of the pair of semi-hollow bodies formed by the fixed-side mold and the movable mold is used as the fixed-side mold or the movable mold. In the state of being left, it is configured to deposit in the mold by covering with a deposition chamber separate from the mold apparatus, in which a vapor deposition element is provided. Since the vapor deposition is performed in the mold using the vapor deposition chamber without taking out from the surface, the surface to be vapor deposited is not contaminated by hand or dust. Therefore, according to the present invention, there can be obtained an effect peculiar to the present invention that a hollow molded article having a thin film on a high quality inner surface in a good vapor deposition state can be obtained. Moreover, since vapor deposition is performed in the mold while remaining in the mold, inventory management of the semi-hollow body becomes unnecessary. Furthermore, it is possible to obtain an effect that automatic molding can be performed at low cost without using a special mold only by preparing a vapor deposition apparatus.

  Hereinafter, a bowl-shaped main body having a thin film such as a reflective curtain on the inner surface and a thin lens-like lid that seals the opening of the main body are molded by injection molding, and the main body in the mold An example of forming a hollow molded article in which a thin film is formed on the inner surface and then the opening of the main body portion is sealed with a lid and the thin film is contained inside will be described. First, an embodiment of the molding apparatus of the present invention will be described. FIG. 1 is a cross-sectional view schematically showing a molding apparatus according to the first embodiment in a closed state. As shown in FIG. 1, according to the first embodiment, FIG. The fixed mold 1, the slide mold 10, and the movable mold 17 are included. The slide mold 10 is attached to the fixed mold 1 so as to be slidably driven in the vertical direction in FIG.

  The fixed mold 1 is fixed to a gantry as is well known in the art. In the embodiment shown in FIG. 1, one main sprue 2 is formed so as to cross the fixed mold 1. A support member 3 extends upward from the top of the fixed mold 1, and a piston cylinder unit 4 that drives the slide mold 10 is attached to the support member 3. By supplying and discharging the working fluid to and from the piston cylinder unit 4, the slide mold 10 is driven to the first position shown in FIG. 1 or to the second upper position described later.

  The slide mold 10 is provided with a primary molding spru 11 and a secondary molding spru 12 at predetermined intervals in the vertical direction. The primary forming sprue 11 is aligned with the main sprue 2 of the fixed mold 1 at the first position shown in FIG. 1, and the secondary forming sprue 12 is at the second position to be described later. Align with main sprue 2. At a position above the parting line surface P of the slide mold 10, a slide-side core 13 for forming a bowl-shaped main body is provided. A small core 14 is formed around the slide-side core 13 for forming a joint at a predetermined interval. A slide-side recess 15 for forming a lid is provided at a position below the parting line surface P. A gate 16 is opened in the slide-side recess 15.

  On the parting line surface P side of the movable mold 17, a movable-side recess 18 for forming a main body part that is paired with the slide-side core 13 is provided. A gate 16 is opened in the movable recess 18. A movable side core 19 that is paired with the slide side recess 15 is provided at a lower position of the movable mold 17 on the parting line plane P side. A small core 19 ′ is formed around the slide side core 19 to form a joint at a predetermined interval. Further, a runner 5 that is aligned with the main sprue 2 of the fixed mold 1 is formed on the parting line surface P side of the movable mold 17.

  FIG. 2 schematically shows an embodiment of the vapor deposition apparatus 20. According to the embodiment shown in FIG. 2, the vapor deposition apparatus 20 includes a vapor deposition chamber 25 attached to an articulated robot 21. Then, according to the present embodiment, for example, a sputtering method is applied. Therefore, the vapor deposition apparatus 20 generates an inert gas such as a vacuum source 30, an inert gas tank, or carbon dioxide gas including an exhaust pump necessary for vacuum vapor deposition. An inert gas supply source 31 to be manufactured, a power supply device 32, and the like are also provided. More specifically, an articulated arm 24 extends from the top of a stand 23 rising from the base 22 of the articulated robot 21. And the vapor deposition chamber 25 is attached to the front-end | tip part. The deposition chamber 25 has a deposition recess 26 having a predetermined opening area or volume. An O-ring 27 that is in pressure contact with the parting line P surface of the slide mold 10 is provided at the opening of the deposition recess 26. Therefore, when the deposition recess 26 is pressed against the parting line P surface of the movable mold 17 with a predetermined force through the O-ring 27, the inside surrounds the body and the deposition chamber 25 having a degree of vacuum necessary for deposition. Will be formed.

  A vapor deposition element is provided in the vapor deposition recess 26 thus configured. The vapor deposition element is not shown in FIG. 2 because the sputtering method is applied in the present embodiment, but the target electrode is located near the opening of the vapor deposition recess 26 and the back side. A substrate electrode is provided. These electrodes are connected to a direct current or high frequency power source, and the substrate electrode is electrically connected to the substrate in the mold. In addition, a gas introduction tube for introducing an inert gas such as argon gas is opened in the vapor deposition recess 26, and a vacuum suction tube is also opened. These gas introduction pipes, vacuum suction pipes, power supply lines connected to the electrodes, etc. extend inside the articulated arm 24 and the stand 23 of the robot, and supply the above-described inert gas via the connecting pipes 28, 28,. The power source 31, the vacuum source 30, and the power supply device 32 are respectively connected.

  Next, a molding example using the molding apparatus according to the first embodiment will be described with reference to FIG. As shown in FIG. 1, the mold is clamped when the slide mold 10 is in the lower first position. Then, the main body forming cavity Ch is constituted by the slide side core 13 and the movable side recess 18 of the movable mold 17. Further, the slide-side recess 15 and the movable-side core 19 of the slide mold 10 constitute a lid forming cavity Cf. As is conventionally known, the molten resin is injected from the main sprue 2. Then, the molten resin passes through the main spru 2, the primary molding spru 12, the runner 5 and the gates 16, 16 and is filled into the main body molding cavity Ch and the lid molding cavity Cf. By this primary molding, the main body H and the lid F are molded so as to have a joining half groove M ′ around the opening. The state after the primary molding is shown in FIG.

  Waiting for cooling and solidification, the movable mold 17 is opened with the main body H left on the movable mold 17 and the lid F left on the slide mold 10. By this mold opening, the inner surface of the main body H is exposed to the parting line P surface. Therefore, the deposition chamber 25 is inserted between the parting line P surfaces using the articulated robot 21 so as to surround the main body H, and the O-ring 27 is formed on the parting line P surface of the movable mold 17. Pressure contact. The state of pressure contact in this way is shown in FIG. The vacuum source 30 and the inert gas supply source 31 of the vapor deposition apparatus 20 are driven to bring the inside of the vapor deposition chamber 25 into an argon gas atmosphere of several Pa to several tens Pa. Then, a negative voltage is applied to the target, and a positive voltage CV is applied to the main body H, and then discharged. Then, a thin film U is formed on the inner surface of the main body H as is well known in the art, and a main body HU1 having a thin film is obtained. .

  When vapor deposition is completed, the vapor deposition chamber 25 is retracted from between the parting lines P of the mold. Then, the slide mold 10 is slid to the upper secondary molding position where the openings of the main body HU1 and the lid F are aligned. The aligned positions are shown in FIG. The mold is clamped at this alignment position. Then, as shown in FIG. 3D, the joint portion, that is, the joining cavity M is formed by the half grooves M 'and M' on the outer peripheral portion of the abutting portion of the main body HU1 and the lid F. Molten resin is injected from the main sprue 2. The molten resin is filled into the joining cavity M from the secondary molding spru 12 through the gate. The main body HU1 and the lid F are integrated by this secondary molding. The movable mold 17 is opened, and a hollow molded product having a thin film on the inner surface is taken out. Thereafter, molding is performed in the same manner.

  According to the first embodiment, since the slide mold 10 and the movable mold 17 are provided with the recesses or the core for forming the pair of main body portions and the lid body, one thin film is formed in one cycle. However, it is clear that a plurality of contact moldings can be formed by providing a plurality of pairs of recesses or cores. It is also clear that a thin film can be formed on the inner surface of the lid H as described above. Furthermore, the structure of the joining cavity is not limited to the above-described embodiment, and can be configured as described in, for example, the above-mentioned cited documents 2 and 3.

  According to the first embodiment, the slide mold 10 is provided on the fixed mold 1, but the slide mold 55 is provided on the movable board 56, and the fixed mold 41 is provided on the fixed board 40. A second embodiment provided with is shown in FIG. The fixed platen 40 is provided with one main sprue 42. The main sprue 42 communicates with a runner 43 provided between the fixed platen 40 and the fixed mold 41, and the runner 43 is subjected to primary molding. The first and second sprues 44 and 45 for communication and the third spur 46 for secondary molding communicate with each other. A sprue switching device RK as shown in Japanese Patent No. 3047213 proposed by the present applicant is provided at the junction of the main sprue 42 and the runner 43. By operating the sprue switching device RK, the main sprue 42 is switched to the first and second spurs 44 and 45 for primary molding or the third spur 46 for secondary molding.

  A fixed-side core 50 for forming the main body portion is provided on the parting line surface P of the fixed mold 41 configured as described above, and a small portion for forming a joint portion around the periphery thereof at a predetermined interval. A core 51 is formed. A first sprue 44 for primary molding is opened at the top of the fixed side core 50. Further, a fixed-side recess 52 for forming a lid body is provided below the parting line surface P. A second sprue 45 for primary molding is opened in the recess 52.

  The slide mold 55 is attached to the movable board 56 so as to be slidable in the vertical direction in FIG. The slide mold 56 is driven by the actuator, that is, the piston cylinder unit as described above, but such a driving device is not shown. A slide-side recess 57 corresponding to the fixed-side core 50 is provided on the parting line surface P of the slide mold 55, and a slide-side core 58 corresponding to the fixed-side recess 52 is provided below the predetermined position. Yes. A small core 59 for forming a joint is formed around the slide-side core 58.

  Next, a molding example will be described. The mold is clamped in the state shown in FIG. Then, the fixed side core 50 and the slide side recess 57 constitute a cavity for forming the main body. At the same time, a cavity for forming the lid F is constituted by the fixed recess 52 and the slide moving core 58. The sprue switching device RK is switched so that the molten resin flows to the runner 43 for primary molding. Then, the molten resin is injected from the main sprue 42 as is conventionally known. The molten resin is filled from the main sprue 42, the sprue switching device RK, the runner 43, and the first and second spurs 44 and 45 for primary molding into cavities for main body molding and cavities for lid molding. . Thereby, the main-body part H and the cover body F are shape | molded substantially simultaneously. Next, the movable platen 56 is opened. At this time, depending on the shape of the molded product or the like, the main body H remains in the slide-side recess 57 of the slide mold 55 and the lid F remains in the fixed-side recess 52 of the fixed mold 41 and is opened. The state opened in this way is shown in FIG.

  As described above, the deposition chamber 25 is surrounded by the articulated robot 21 so as to surround the main body H or the slide-side concave portion 57, and the parting line surface P of the slide mold 55 via the O-ring 27. Press contact. Then, the thin film U is formed as described above. The deposition chamber 25 is retracted. Then, the slide mold 55 is slid to the secondary molding position where the openings of the main body H and the lid F are aligned. The position aligned in this way is shown in FIG. The mold is clamped at this alignment position. Then, the sprue switching device RK is switched to inject molten resin for secondary molding from the main sprue 42. The molten resin passes through the runner 43 ′ and is filled into the joining space M from the third sprue 46 for secondary molding. Thereby, the hollow molded product which has a thin film on the inner surface with which the main-body part H and the cover body F were integrated is obtained.

  FIG. 5 shows a third embodiment including a disk or columnar fixed mold 60 and a rotating mold 70 having a disk or columnar shape. 5A is a perspective view of the stationary mold 60, and FIG. 5B is a perspective view of the rotating mold 70 as viewed from the side of the partition line P. As shown in these drawings, FIG. On the parting line surface P of the fixed mold 60, a fixed-side concave portion 61 for forming the main body portion is formed at a position deviated by a predetermined amount in the radial direction from the center portion. And the fixed side core 62 for shape | molding a cover body in the position 120 degree | times away from the fixed side recessed part 61 in the circumferential direction is formed. Further, a fixed-side relief 63 is provided at a position 120 degrees away from the fixed-side recess 61 or the fixed-side core 62. This fixed-side relief 63 is formed to a predetermined depth, and a core for molding the main body portion is inserted during secondary molding as will be described later. A sprue 64 communicating with the nozzle of the injection machine is formed at the central portion of the fixed mold 60 configured as described above. The sprue 64 is connected to a runner 65 formed on the parting line surface P and a gate (not shown). Open to the fixed-side recess 61.

  On the parting line surface P of the rotating mold 70, a rotating side core 71 and a rotating side recess 72 are formed at intervals of 120 degrees in the circumferential direction. The rotation-side core 71 is paired with the fixed-side recess 61, and a cavity for forming the main body is formed when the mold is clamped at a predetermined position. Further, the rotating side recess 72 forms a cavity for forming a lid body in cooperation with the fixed side core 62. The rotary mold 70 is also provided with a rotary escape 73 at a position 120 degrees away from the rotary core 61 or the rotary recess 72. As described above, the fixed side core 62 for forming the lid body enters the rotary side relief 73 during the secondary molding. A runner 75 communicating with the rotation-side recess 72 via the gate is formed on the parting line surface P at the center of the rotary mold 70 thus configured.

  In addition, in the outer peripheral portions of the fixed side core 62, the rotation side core 72, etc., as shown in FIGS. Although a small core or the like for forming a concave portion for bonding is provided in the portion, it is not shown in FIG. Also, a drive device, a mold clamping device, and the like that drive the rotary mold 60 in a predetermined angle, for example, reciprocating dynamically are not shown. An apparatus shown in FIG. 2 is applied to the vapor deposition apparatus 20.

  5A is a perspective view of the stationary mold 60, and FIG. 5B is a perspective view of the rotating mold 70 as viewed from the parting line surface P side. FIGS. Although it is the top view which opened the metal mold | dies 60 and 70 and was seen from the parting line surface P side, the example of shaping | molding using the said metal mold | dies 60 and 70 is demonstrated referring these figures. The mold is clamped in the state shown in (a), (b) or (c), (d) of FIG. Then, the cavity for molding the main body is constituted by the fixed-side recess 61 of the fixed mold 60 and the rotary-side core 71 of the rotary mold 70. Further, the fixed side core 62 of the fixed mold 60 and the rotary side recess 72 of the rotary mold 70 constitute a cavity for molding the lid. Furthermore, the runners 65 and 75 open to the cavities through gates. The molten resin injected and filled from the sprue 64 is filled from the runners 65 and 75 into the respective cavities. By this primary molding, the main body and the lid are molded substantially simultaneously. Waiting for a certain amount of cooling and solidification, the rotating die 70 is opened with the main body portion remaining on the stationary recess 61 of the stationary die 60 and the lid remaining on the rotating recess 72 of the rotating die 70. . Then, the fixed-side concave portion 61 in which the main body portion remains is pressed against the parting line surface P so as to be surrounded by the vapor deposition chamber 25 described above. Then, as described above, a thin film is formed on the inner peripheral surface of the main body.

  When the formation of the thin film is completed, the vapor deposition chamber 25 is retracted from between the parting lines P. As indicated by an arrow in FIG. 5B, the rotary mold 70 is rotated 120 degrees in the direction opposite to the rotation direction of the clock hand. Then, after the vapor deposition is finished, the main body portion remaining in the fixed-side recess 61 of the fixed mold 60 and the lid remaining in the rotation-side recess 72 are aligned at the opening. In this aligned state, as shown in FIGS. 5E and 5F, the fixed-side core 62 of the fixed mold 60 is positioned in the rotary-side relief 73 of the rotary mold 70. The rotation-side core 72 of the rotation mold 70 is positioned in the relief 63 on the fixed side of the fixed mold 60. Thereby, it can clamp. The mold is clamped, and a molten resin for secondary molding (not shown) is filled in the joint space between the main body and the butted portion of the lid. By this secondary molding, a hollow molded product having a thin film on the inner surface with a thin film formed on the inner peripheral surface of the main body is obtained.

  In the third embodiment, the stationary mold 60 is provided with the stationary recess 61, the stationary core 62, and the stationary relief 63 at an interval of 120 degrees in the circumferential direction. Only a hollow molded product having a thin film on one inner surface can be obtained in a cycle. However, it is obvious that two similar concave parts, cores, etc. can be formed with an interval of 60 degrees, and two can be molded. It is also clear that a thin film can be similarly formed on the inner surface of the lid.

It is sectional drawing which shows the metal mold | die concerning the 1st Embodiment of this invention. It is a perspective view which shows typically embodiment of the vapor deposition apparatus concerning this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows each shaping | molding step typically using the metal mold | die concerning the 1st Embodiment of this invention, The (a) is the state after the primary shaping | molding, The (b) is vapor-deposited. (C) is a cross-sectional view showing the stage before entering secondary molding, and (d) is a sectional view showing the state after secondary molding. It is a figure which shows the metal mold | die concerning the 2nd Embodiment of this invention, The (a) is sectional drawing which expands and shows a movable metal mold | die, (b) is the state which has vapor-deposited, (C) is a cross-sectional view showing the state after the secondary molding is reduced. The figure which shows the metal mold | die concerning the 3rd Embodiment of this invention, The (a) is a fixed metal mold | die, The (b) is the perspective view which opened the rotation metal mold | die, and was seen from the parting line side, (C) to (F) are plan views showing respective molding stages as viewed from the parting line side with the fixed mold and the rotating mold opened.

Explanation of symbols

10 Slide mold 13 Slide side core
15 Slide side recess 17 Movable mold
DESCRIPTION OF SYMBOLS 18 Movable side recessed part 19 Movable side core 20 Deposition apparatus 25 Deposition chamber 30 Vacuum source 32 Power supply apparatus
DESCRIPTION OF SYMBOLS 41 Fixed mold 50 Fixed side core 52 Fixed side recessed part 55 Slide mold 57 Slide side recessed part 58 Slide side core 60 Fixed mold 61 Fixed side recessed part 62 Fixed side core 70 Rotating mold 71 Rotating side core 72 Rotating side recessed part

Claims (5)

Primary molding in which a pair of semi-hollow bodies are injection-molded so as to have a butted portion at the opening using a stationary mold and a movable mold movable with respect to the stationary mold; The mold is opened with one half-hollow body of the pair of half-hollow bodies formed by primary molding remaining on the fixed mold and the other half-hollow body remaining on the moving mold. body and vapor deposited to form a thin film on at least one inner surface of an opening of the pair of semi-hollow body the deposition molding is finished butt in a state of remaining in the mold, and the butted portion by injecting a molten resin A molding method comprising secondary molding to obtain a hollow body by integrating a pair of semi-hollow bodies,
In the vapor deposition formation, the mold is opened after the primary molding, the semi-hollow body remaining in the mold, a sealing means is provided in the opening, and a vapor deposition element is provided therein. A method for forming a hollow molded article having a thin film on its inner surface, which is carried out in a mold by covering with a vapor deposition chamber separate from the mold apparatus . The molding method according to claim 1, wherein a fixed mold and a slide mold provided to be slidable to the first and second molding positions with respect to the fixed mold are used on the inner surface. A method for forming a hollow molded article having a thin film. A hollow molded article having a thin film on the inner surface obtained by carrying out the molding method according to claim 1. Composed of a mold apparatus comprising a fixed mold and a movable mold provided to be movable to the first and second molding positions with respect to the fixed mold, and a combination of a vapor deposition apparatus,
On the parting line side of the fixed mold, a fixed side core and a fixed side recess for forming a pair of semi-hollow bodies are provided, and on the parting line side of the moving mold, the fixed line A moving side recess and a moving side core that cooperate with the side core and the fixed side recess respectively are formed,
In the first molding position of the movable mold, a pair of semi-hollow bodies are primarily molded by the fixed core and the movable recess, and by the fixed recess and the movable core, and the movable mold is primary molded. In the second molding position, secondary molding in which a pair of semi-hollow bodies remaining in the stationary recess and the movable recess is integrated is performed,
The vapor deposition apparatus includes a vapor deposition chamber that is inserted between the parting lines when the mold is opened, and the fixed side mold or the moving mold parting is provided at an opening of the vapor deposition chamber. A hollow molded article having a thin film on its inner surface, characterized in that a sealing means is provided on the line surface so as to surround the fixed recess or the moving recess and is pressed in an airtight state, and a vapor deposition element is provided therein. Molding equipment. 5. The molding apparatus according to claim 4, wherein the movable mold is a movable mold that is rotatably provided to the first and second molding positions with respect to the fixed mold, and has a thin film on the inner surface. Product molding equipment.

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