DE102006044933A1 - Production of hollow moldings with thin film on inner surface comprises molding pair of half-shells using sliding mold, moving sliding mold with half-shells in molds, and coating inner surface of one using vaporization system on fixed mold - Google Patents

Abstract

Production of hollow moldings with a thin film on an inner surface comprises: (A) molding a pair of half-shells using a stationary and a sliding mold; (B) moving the sliding mold with the half-shells in their molds to a position where the inner surface of one can be coated using a vaporization system on the fixed mold; moving the shells to a position where the coated one fits inside the other; and (C) casting resin between them to fix them together. Independent claims are included for: (A) a similar method where several moldings can be produced simultaneously; (B) a molding apparatus for use in the method comprising: a stationary mold (1) with a core (11) and a recess (12) for molding the half-shells and vaporization recesses (3, 4) fitted with a target electrode, a substrate electrode and a vacuum line; and a sliding mold (20) comprising a horizontally sliding mold (22) with a core (26) and a vertically sliding mold (30) with recesses (33, 34) which cooperate with the core on the stationary mold, the vaporization recesses being positioned to cover those on the sliding mold; and (C) a similar apparatus for producing several moldings simultaneously.

Description

The present application is based on Japanese Patent Application No. 2005-153273 which is incorporated herein by reference.

The The present invention relates to a method for forming a hollow casting defined by connecting the openings of a pair of half-hollow bodies being, being a thin film on the inner surface evaporated by at least one half-hollow body and a casting apparatus for executing the above casting method.

One Casting a thin film with a thickness of a few microns on the inner surface of a hollow body has, for example, a headlight or a tail light, which is mounted on a vehicle. The light sets from a recessed body part with an electric bulb and one in one with the opening of the body part connected lens unit together. The body part becomes, for example poured by an injection molding process and in a vacuum evaporation tank on a hanging device suspended wherein an uncoated part such as the outer surface is masked becomes. On the body part is then made using the sputtering method described below a thin film educated. The bodypart is re-inserted into the mold and with a separately cast Lens part aligned, the two parts then by injection molding one piece be connected to each other.

The A vapor deposition method for forming a thin film on the surface of a Substrate such as the body part is known from the prior art. Such is the atomization process, for example known in which the thin film is formed by the substrate and the target opposite each other can be arranged and a negative voltage of several kV in an argon gas atmosphere from several Pa to several tens Pa is applied to the target. Furthermore the vacuum evaporation method is known in which the film is formed is placed by placing the substrate and a vapor source in a vacuum container. Furthermore, the ion plating method is known in which the Vacuum deposition in an argon gas under a pressure of several Pa performed by applying a negative voltage of several kV to the substrate is created. After all the chemical deposition method is known.

JP-B-2-38377 discloses a method of forming a hollow casting by injection molding. Specifically, the method of forming a hollow casting includes: primary casting in which a pair of primary half castings are formed through a pair of cavities defined by the stationary mold and the slip mold so as to provide a connection part around the opening thereof; and a secondary casting in which the molds are opened so that a primary half-mold part remains on the stationary mold while the other primary half-mold part remains on the slide mold, the slide mold being pushed to a position where the connection parts of the paired primary half-casting parts are aligned are, wherein the castings are then clamped against each other and the connecting parts are joined together by the injection of the molten synthetic resin. Furthermore, there is Japanese Patent No. 3,326,752 a casting method according to JP-B-2-38377 in which a guide member is formed integrally during the primary molding on the inside of the connecting part or the abutting part of a primary half casting, wherein the abutting part of the other primary semi-casting for secondary molding is guided by the guide part of the abutting part of the one primary half casting when it is fitted on the abutting part of the primary half casting. On the other hand that gives Japanese Patent No. 3,047,213 a casting method in which the hollow casting is formed as described above by injecting the resin so that the angle formed between the piercing part and the injection point in the secondary casting can be 90 degrees or less.

at The casting methods described above cause many problems, because the substrate is previously formed by injection molding and then to the vacuum tank for the vaporization must be transported. For example, that will Substrate previously formed and then stored. In this case, the substrate to its surface by touch or dust, causing a fuming defect becomes. To avoid this, the handling of the substrate must be done extremely carefully, which increases the cost become. When the prefabricated substrate is stored, it forms also an administrative burden. In addition, the substrate must be off be removed from the mold before it is steamed, and then again be used in the mold to connect it, reducing productivity becomes.

On the other hand, the injection molding of JP-B-2-38377 not only advantageous because the individual steps can be automated to produce the hollow castings in bulk, but also because hollow castings can be made with complex shapes. According to the invention of Japanese Patent No. 3,326,752 The shock parts can also be brought into a good shock relationship with some deformations so that the resin can not leak for secondary casting. Furthermore, the invention of Japanese Patent No. 3,047,213 characterized in that the bonding force is so high that the molten resin for secondary casting can also be cast with fewer injection parts. These inventions are still used effectively today. However, the prior art casting methods can not form a thin film having a thickness of only a few micrometers on the inner surface of the hollow casting.

The The present invention aims to provide a casting method which solves the above problems of the prior art, it is an object of the invention to provide a method of forming a hollow casting with a thin film on the inner surface, wherein Impurities on the surface to be vaporized are prevented, so that the quality not affected by evaporation errors, with no special Warehouse management is required and where automatic casting is easy carried out and a casting apparatus for executing the Casting specify.

Around will solve the above task according to the invention the inner surface by a stationary one Mold and a moving mold of molded body part in the recess left of the moving mold, the body part with a vapor deposition chamber covering a vapor deposition element such as a target electrode, a substrate electrode or a vacuum suction tube, so that the Steaming carried out in the mold becomes.

Around to solve the above problem is according to one First aspect of the invention, a method for forming a hollow Casting with a thin film on the inner surface , the method comprising: a primary casting, comprising: casting a Pair of half-hollow bodies under Use of a stationary Mold and a sliding movable mold; a vaporization, which includes: Moving the slidable movable mold to a predetermined position, where paired half-hollow body, the while of the primary Casting poured were to remain in their respective forms; and steaming the inner surface of at least one of the paired half-hollow bodies, during this through a Evampfungsvertiefung covered in the stationary Form is formed and a sputtering element with a target electrode, a substrate electrode and a vacuum suction tube; and a secondary To water, comprising: moving the slidable movable mold to the position, where the openings the paired half-hollow body with each other aligned, wherein the paired half-hollow body, of which at least one was steamed, remaining in the respective forms; jam the slidable movable mold; and injecting a molten one Synthetic resin to the connecting parts of the half-hollow body to the paired half-hollow bodies to connect with each other. According to one second aspect of the invention is a method for simultaneous Forming a variety of hollow castings specified, each one thin film on its inner surface , the method comprising: a primary casting, comprising: casting a Variety of pairs of semi-hollow bodies using a stationary form and a slidable movable mold; a vaporization, which includes: Moving the slidable movable mold to a predetermined position, wherein the multiplicity of paired half-hollow bodies which during the primary casting were poured, remain in their respective forms; and steaming the inner surface of at least one of the paired half-hollow bodies while passing through a vapor deposition well covered in the stationary Form is formed and a sputtering element with a target electrode, a substrate electrode and a vacuum suction tube; and a secondary To water, comprising: moving the slidable movable mold to the position, where the openings the plurality of pairs of half-hollow body are aligned while the Variety of pairs of semi-hollow bodies, of which at least one was steamed, remaining in the respective molds; jam the slidable movable mold; and injecting a molten one Synthetic resin to the connecting parts of the half-hollow body to to connect the plurality of pairs of half-hollow bodies together. According to one third aspect of the invention are paired with each other in the primary casting Semi hollow body cast from different synthetic resin materials.

According to a fourth aspect of the invention, there is provided a casting apparatus for forming a hollow casting formed by bonding a pair of half-hollow bodies around an opening and having a thin film on the inner surface of at least one of the half-hollow bodies, the apparatus comprising: a stationary mold comprising: a core and a recess for casting the paired half-hollow bodies; and a first evaporation well and a second evaporation well arranged at a predetermined interval and including a vapor deposition element having a target electrode, a substrate electrode, and a vacuum suction tube; and a movable mold comprising: a horizontally sliding mold having a core cooperating with the recess of the stationary mold; and a vertically sliding mold having a first recess and a second recess which cooperate with the core of the stationary mold, wherein the first evaporation well and the second evaporation well are dimensioned such that they respectively Cover first recess and the second recess in the vertically sliding form. According to a fifth aspect of the invention, there is provided a casting apparatus for simultaneously forming a plurality of pairs of hollow castings formed by bonding paired half-hollow bodies around an opening and each having a thin film on the inner surface of at least one of the half-hollow bodies, the casting apparatus comprising: a stationary mold comprising: a plurality of cores and a plurality of recesses for molding the paired half-hollow bodies; and a first evaporation well and a second evaporation well arranged at a predetermined distance from each other and comprising a sputtering element having a target electrode, a substrate electrode, and a vacuum suction tube; and a movable mold comprising: a horizontally sliding mold having a plurality of cores each cooperating with a plurality of recesses of the stationary mold; and a vertically sliding mold having a first recess and a second recess, each cooperating with the stationary mold core, wherein the first evaporation cavity and the second evaporation cavity are dimensioned to define the first cavity and the second cavity, respectively Cover vertically sliding mold.

According to the invention becomes a pair of semi-hollow bodies poured by a stationary mold and a slidable movable mold, wherein the slidable movable mold is moved to a predetermined position, wherein those in the primary Cast step cast paired hollow body in respective shapes stay to the inner surface to vaporize at least one of the paired half-hollow bodies during this covered by an evaporation well, which in the stationary form is formed and a vapor deposition element such as a target electrode, a substrate electrode or a vacuum suction tube. The paired Semi hollow body So they are not taken out of shape, but steamed in the mold, while they are covered by the evaporation well, so that the vaporized surface is not through touches or dust is contaminated. It is therefore possible to have a hollow casting with a thin film to obtain an excellent vaporization quality on an inner surface. Furthermore, the vapor deposition is carried out in the mold, wherein the half-hollow bodies stay in the mold, so that the half-hollow body of any warehouse management require. According to the invention the slidable movable mold is moved to the position where the opening of the paired half-hollow body aligned with each other while the paired half-hollow bodies, of which at least one is steamed, remaining in the respective forms, to clamp the slidable moving mold so that the paired Semi hollow body be joined together by a molten synthetic resin is injected to the connecting parts. Using the Can shape also castings with a complex shape and a thin film their inner surface simply be poured automatically.

According to one Another aspect of the invention is a plurality of pairs of Half hollow bodies through the primary Casting step is cast and the inner surface of at least one of the paired half-hollow body steamed in the Bedampfungsschritt, the paired half-hollow body then in the secondary Casting step to be connected with each other. In addition to the effects described so far can use the variety of hollow castings, each with the thin film on the inner surface produced simultaneously, making the casting process efficient is improved.

1A and 1B 10 are diagrams showing a casting apparatus according to a first embodiment of the invention, wherein the perspective views A and B respectively show a stationary shape and a movable shape from the perspective of the parting line.

2A to 2J 10 are diagrams showing the casting apparatus according to the first embodiment, wherein the plan views A to J schematically represent the individual casting steps, respectively.

3A to 3D Fig. 3 are diagrams showing examples of the molds for explaining the working principle of the invention, wherein the sectional views A to D schematically represent the individual casting steps, respectively.

4A and 4B 10 are diagrams showing a casting apparatus according to a second embodiment of the invention, wherein the perspective views A and B respectively show a stationary shape and a movable shape from the perspective of the parting line.

An exemplary hollow cast article having a thin film on the inside formed by injection molding a cup-shaped body part and a plate-shaped cover member to seal the opening of the body part will be described below, wherein the thin film is formed on the inner surface of the body part in the mold, and wherein the Opening of the body part is sealed by the cover member. First, an embodiment of the casting apparatus of the invention will be described. 1 FIG. 15 is a perspective view showing the molding apparatus according to an embodiment of the invention. FIG. 1A is a perspective view of a stationary mold 1 from the Pers pective of the dividing line, and 1B is a perspective view of a movable mold 20 from the perspective of the dividing line. In the embodiment shown, the stationary mold 1 a parting line P whose cross-section is generally a first vertically extending forming surface 2 and a second horizontally extending molding surface 10 includes.

In the first molding surface 2 are a first and a second evaporation well 3 and 4 formed to form a vacuum chamber with a vertically predetermined distance. These evaporation pits 3 and 4 are dimensioned to cover the body molding recesses, described below, around the evaporation pits 3 and 4 one O-ring each 5 is provided. For example, when the sputtering is performed using the sputtering method, sputtering elements such as target electrodes or substrate electrodes are in the sputter pits 3 and 4 Vacuum suction pipes or argon gas supply pipes are arranged or opened in the evaporation cavities 3 and 4 , Furthermore, the openings of these electrodes or vacuum suction pipes with an evacuation device 8th , a noble gas supply device 9 and a power source, not shown, via hoses 6 and 7 connected.

The second mold surface 10 is provided in the horizontal direction and with the first and the second evaporation well 3 and 4 aligned, leaving a body casting core 11 to pour the cup-shaped body part. The second casting surface 10 is still at a predetermined distance from the body casting core 11 arranged and has a cover member casting recess 12 for casting the cover member. The body casting core 11 protrudes from the parting line P to the outside. As a result, the body part is formed cup-shaped. Furthermore, the cover member casting recess 12 slightly offset from the parting line P inward. As a result, a plate-shaped cover member is molded. To this core 11 a projection is formed around, as in detail with respect to 3 described to pour a integrally connected to the body part connecting part.

The mobile form 20 includes a horizontally sliding shape 22 that on a movable frame 21 is attached, that it can slide horizontally, as well as a vertically sliding shape 30 , which are so on the horizontal sliding shape 22 attached is that it can slide vertically. The forms 22 and 30 have parting lines P formed in a common plate. In the embodiment of 1B is therefore the horizontal sliding form 22 divided horizontally, so that the vertically sliding shape 30 vertical to the 1B slides between the divided parts. The horizontal sliding form 22 gets along with the vertically sliding shape 30 through an actuator 24 driven, one end of which on a holding member 23 attached, which is horizontal from the movable member 21 extends. Furthermore, the vertically sliding shape 30 regardless of the horizontal sliding shape 22 vertically through an actuator 32 driven, one part of a vertically extending gate-shaped retaining member 31 is attached.

A cover member cast core 25 for forming the cover song is on the side of the parting line surface P of the horizontal sliding mold 22 the movable form 20 trained and crossed the vertically sliding shape 30 , where a depression 26 for removing the Körpergusskerns 11 is formed from the clamped state on the other side. Around the cover member casting core 25 around is like the body casting core 11 also formed a projection for integrally molding the connecting part with the cover member (not in 1B shown). In the parting line P of the vertically sliding mold 20 are a first and a second Körpergussvertiefung 33 and 34 formed, each of the first and the second evaporation well 3 and 4 in the stationary form 1 correspond.

The stationary form described above 1 and the movable form 20 may be used to form the cup-shaped body part and the plate-shaped cover member in the primary molding operation, wherein the body part and the cover member may then be connected to each other in the secondary molding operation to form the hollow casting. An example of a shape is for explaining the casting principle in FIG 3 shown. In particular, this form comprises a stationary mold 40 and a sliding shape 45 , wherein a Körpergussvertiefung 41 with a predetermined depth for casting the body at an upper position in the parting line surface P of the stationary mold 40 is formed while a cover member casting core 42 is formed with a relatively small height at a lower position. A small core 43 is at a predetermined distance around the core 42 trained around. The little core 43 forms a connection stage part around the opening of the cover member. On the parting line P of the sliding mold 45 is a body casting core 46 trained, with the Körpergussvertiefung 41 the stationary form 40 is paired. A small core 47 is at a predetermined distance around the core 46 trained around. The little core 47 forms a connecting step part around the opening of the body. Under the body casting core 46 is a flatter cover link casting recess 48 formed with the cover member casting core 42 the stationary form 40 is paired. Between the body casting core 46 and the cover member casting recess 48 the sliding form 45 is a primary funnel 50 trained, with the Körpergussvertiefung 41 and the cover member casting recess 48 over a sprue 51 and an enema 52 communicated. A secondary funnel 53 is under the primary funnel 50 educated. In 3 the actuator is not shown, which is the sliding form 45 for the vertical sliding, the means for clamping the molds, the ejector for ejecting the molds, the injector, etc., driving.

Hollow castings can be formed by the above mentioned forms 40 and 45 be used as follows. The forms 40 and 45 be in a first position as in 3A shown clamped. At this time, a body casting cavity Kh becomes through the body casting recess 41 the stationary form 40 and the body casting core 46 the sliding form 45 educated. Further, a cover member molding cavity Kf is formed by the cover member molding core 42 the stationary form 40 and the cover member casting recess 48 the sliding form 45 educated. Molten resin is poured over the primary funnel 50 injected. The molten resin runs through the sprue 51 and the enema 52 into the body casting cavity Kh and the cover member casting cavity Kf as in FIG 3B shown. By this primary casting operation, a body H and a cover member F having a connection half-recess M 'are molded around the openings. This half-pit M 'is in 3C shown.

After cooling, the mold is opened with the body H in the stationary mold 40 remains and the cover member F in the sliding form 45 remains. Then the sliding shape 45 moved to the secondary molding position where the openings of the body H and the cover member F are aligned with each other. The alignment position is in 3C shown. The molds are clamped at the alignment position. Then, a connection cavity M is formed by the half recesses M 'and M' on the outer circumference of the butts of the body H and the cover member F as in FIG 3D shown formed. A synthetic resin that is identical to or different from the synthetic resin of the body will pass through the secondary funnel 53 injected. By this secondary casting, the body H and the cover member F are connected to each other to produce a hollow casting.

The hollow casting having a thin film on its inner surface is thus obtained as described above by casting the body part and the cover member by the primary casting operation by forming the thin film on the inner surface of the body part and the inner surfaces of the body part and the cover member, respectively then the body part and the cover member are held abutting each other to join them together in the secondary molding operation by the injection of molten resin. In the previously described embodiment of 1 are the body casting core 11 , the cover member casting core 25 , the first and the second body deepening 33 and 34 , the cover member casting recess 12 etc. with the forms of 3 formed, wherein the connecting part in the primary casting a structure as in the Japanese Patent No. 3,326,752 and in that Japanese Patent No. 3,047,213 may be described, but here as shown schematically in FIG 1 is shown simplified.

With reference to the schematic representation of 2 Fig. 10 shows an example of casting a hollow casting with a thin film on the inner surface using the stationary mold 1 and the movable form 20 the embodiment of 1 described. In 2 For example, an empty ellipse represents an unfilled cavity, while an ellipse with a circle represents a filled cavity or half-completed casting during primary casting. A hatched ellipse represents a half vaporized casting, while a bold hatched ellipse represents a casting with a fully vaporized interior surface. Further shows 2 only the sliding driven moving form 20 but not the fixed stationary form 1 ,

The mobile form 20 is moved to a first casting position. Furthermore, the vertically sliding shape 30 moved to the lower first casting position. This is the first Körpergussvertiefung 33 the vertically sliding shape 30 with the body casting core 11 the stationary form 1 aligned to form a cavity for the casting of the cup-shaped body part. The molds are clamped and the molten resin for the primary casting operation is injected. In this way, the first part of the body is poured. The condition is in 2A shown.

After a certain cooling cure, the moving mold becomes 20 opens and becomes the vertically sliding shape 30 to an upper second casting position of 2 B emotional. At this time, the cover member casting core becomes 25 the horizontal sliding form 22 with the cover member casting recess 12 the stationary form 1 aligned. The second body casting recess 34 the vertically sliding shape 30 becomes with the body casting core 11 the stationary form 1 aligned. This alignment state is in 2 B shown. The forms who the clamped. In this case, a cavity for casting the cover member through the cover member casting recess 12 the stationary form 1 and the cover member casting core 25 the horizontal sliding form 22 formed while still a cavity for casting the second body through the body casting core 11 and the second body casting well 34 is formed. The molten resin of the first casting is injected into these cavities. Through these primary casting operations, the second body part and the first cover member become as in 2C shown poured simultaneously.

After cooling, the mobile form becomes 20 opens and becomes the vertically sliding shape 30 to the lower first steaming position of 2D emotional. This is the first Körpergussvertiefung 33 the vertically sliding shape 30 with the first evaporation well 33 the stationary form 1 aligned. In particular, in the first Körpergussvertiefung 33 left first body part with the first evaporation well 3 aligned and enclosed in this. Then the molds are clamped for steaming.

After clamping, the O-ring 5 the first evaporation well 3 in close contact with the parting line surface P of the vertically sliding mold 30 to be brought. For example, a vacuum source or a noble gas supply source is driven to the interior of the first evaporation well 3 to provide an argon gas atmosphere of several to several tens of Pa. Then, a negative voltage is applied to the target with a positive voltage of several kV applied to the body part, so that the argon is discharged and evaporated on the inner surface of the body part. The steamed condition is in 2D shown. The vertically sliding form 30 becomes the left secondary casting position of 2E emotional. The first part of the body remains in the first body casting recess after steaming 33 and is aligned with the cover member which is in the cover member casting recess 12 the stationary form 1 remains. The molds are clamped and a molten resin for the second molding operation is injected. Thereby, the body part and the cover member are connected to each other at the opening. This condition is in 2E shown. The mobile form 20 is opened to take out the hollow casting with the thin film on the inner surface of the body part. When the casting is taken out, the first body casting recess becomes 33 the vertically sliding shape 30 as in 2F shown emptied.

The casting is taken out and the molds are clamped. Then, a cavity for casting a third body part through the body casting core 11 and the body casting well 33 is formed and is a cavity for casting a cover member through the cover member casting recess 12 the stationary form 1 and the cover member casting core 25 the horizontal sliding form 22 educated. The molten resin for the primary casting operation is injected into these cavities. In this way, the third body part and the second cover member are simultaneously poured. The state after completion of the primary casting operation is in 2G shown.

The mobile form 20 will be opened. The vertically sliding form 30 is moved to an upper second sputtering position. Then the forms are clamped. This is the O-ring 5 the second evaporation well 4 in preparation for the vapor deposition, in close contact with the parting line surface P of the vertically sliding mold 30 brought. As described above, the voltage and the gas are supplied into the space of the second evaporation, so that the evaporation takes place on the inner periphery of the second body part. The state after completion of the evaporation is in 2H shown. The vertically sliding form 30 becomes the secondary casting position of 2I emotional. This is the second part of the body, which after the evaporation in the second Körpergussvertiefung 34 remains aligned with the cover member in the cover member cast recess 12 the stationary form 1 remains. The molds are clamped and the molten resin for the secondary molding operation is injected. As a result, the body part and the cover member are connected to each other at the opening. The mobile form 20 is opened to take out the hollow casting with the thin film on the inner surface. The condition after removal is in 2J shown. Then, the hollow casting with the thin film on the inner surface of the body part is poured in a similar manner.

The invention can be realized in various ways. It should be understood that the inner surface of the cover member may also be formed, for example, by additionally forming a cover member evaporation recess in the stationary mold 1 can be steamed. It should also be clear that two hollow castings with thin films can be cast on their inner surfaces at the same time if a casting device as in 4 shown is used. Such an embodiment will not be described in detail herein, with components identical to those of the first embodiment being indicated by like reference numerals or by reference numerals. In this embodiment, a stationary mold comprises 1' two body casting cores 11 and 11 ' and two Cover-member cast pits 12 and 12 ' , Furthermore, the horizontally sliding mold comprises 22 the movable form 20 ' two cover member cores 25 and 25 ' and a large recess recess 26 ' for picking up the body casting cores 11 and 11 ' , The vertically sliding form 30 is with two first body moldings 33 and 33 ' and two second body wells 34 and 34 ' Mistake. Furthermore, the first and second evaporation wells are 3 ' and 4 ' the stationary form 1' dimensioned so that they are the two first Körpergussvertiefungen 33 and 33 ' and the two second body wells 34 and 34 ' the vertically sliding shape 30 cover at the same time. It should also be understood that three or more hollow castings with thin films can be simultaneously formed on their inner surfaces by increasing the number of body casting cores and cover member molding recesses. Other synthetic resin material may also be used to cast the body and cover member during primary casting. For example, the cover members may be cast from a transparent lens material when the hollow castings with the thin films on their surfaces are used for headlamps or taillights.

Claims (6)

Method for forming a hollow casting with a thin film on its inner surface, the method comprising: a primary casting that includes: Pour one Pair of half-hollow bodies using a stationary one Shape and a sliding movable shape, a steaming, this includes: Moving the slidable movable mold to a predetermined one Position, with the paired half-hollow bodies being poured during primary casting were staying, in their respective forms, and Steaming the palm of at least one of the paired half-hollow bodies passing through an evaporation well covered in the stationary Form is formed and comprises a sputtering element, which is a Target electrode comprising a substrate electrode and a vacuum suction tube, and a secondary one To water, this includes: Moving the sliding movable mold to a position where the openings the paired half-hollow body with each other aligned, wherein the paired half-hollow body, of which at least one was steamed, staying in their respective forms, jam the sliding movable mold, and Injecting a molten one Synthetic resin to the connecting parts of the half-hollow body to the paired half-hollow bodies to connect with each other. Method for forming a hollow casting after Claim 1, characterized in that the paired half-hollow body during the primary casting are cast from different synthetic resin materials. Method for simultaneously forming a plurality hollow castings, each having a thin film on its inner surface, the method comprising: a primary casting that includes: Pour one Variety of pairs of semi-hollow bodies using a stationary Shape and a sliding movable shape, a steaming, this includes: Moving the slidable movable mold to a predetermined one Position, wherein the plurality of pairs of hollow bodies, the while poured the primary casting were staying, in their respective forms, and Steaming the palm of at least one of the paired half-hollow bodies passing through an evaporation well covered in the stationary Form is formed and a sputtering element with a target electrode, a substrate electrode and a vacuum suction tube, and one secondary To water, this includes: Moving the sliding movable mold to a position where the openings the plurality of pairs of half-hollow body aligned with each other are, wherein the plurality of pairs of semi-hollow body, of which at least one was steamed, in the respective forms stay, Clamps of the sliding movable mold, and inject a molten synthetic resin to connect the half-hollow bodies to connecting the plurality of pairs of half-hollow bodies together. Method for simultaneously forming a plurality of hollow castings according to claim 3, characterized in that the paired half-hollow bodies while of the primary casting are cast from different synthetic resin materials. A casting apparatus for forming a hollow casting formed by joining a pair of half-cavities around an opening and having a thin film on the inner surface of at least one of the half-hollow bodies, the casting apparatus comprising: a stationary mold (10); 1 ), which comprises: a core ( 11 ) and a recess ( 12 ) for casting the paired half-hollow bodies, and a first evaporation well ( 3 ) and a second evaporation well ( 4 ), which are arranged at a predetermined distance from each other and each having a vapor deposition element with a target electrode, a substrate electrode and a vacuum suction pump, and a movable form ( 20 ), which comprises: a horizontal sliding mold ( 22 ), which has a core ( 25 ) which is in contact with the depression ( 12 ) of the stationary form ( 1 ) and a vertically sliding shape ( 30 ), which is a first well ( 33 ) and a second recess ( 34 ) with the core ( 11 ) of the stationary form ( 1 ), the first evaporation well ( 3 ) and the second evaporation well ( 4 ) are dimensioned such that they each have the first recess ( 33 ) and the second recess ( 34 ) in the vertically sliding form ( 30 ) cover. A casting apparatus for simultaneously forming a plurality of pairs of hollow castings formed by joining paired half-hollow bodies around an opening and each having a thin film on the inner surface of at least one of the half-hollow bodies, the casting apparatus comprising: a stationary mold (Fig. 1' ), which comprises: a plurality of cores ( 11 . 11 ' ) and a variety of wells ( 12 . 12 ' ) for casting the paired half-hollow bodies, and a first evaporation well ( 3 ' ) and a second evaporation well ( 4 ' ) arranged at a predetermined distance from each other and comprising a sputtering element comprising a target electrode, a substrate electrode and a vacuum suction tube, and a movable mold (10); 20 ' ), which comprises: a horizontal sliding mold ( 22 ), which have a multiplicity of cores ( 25 . 25 ' ), each with a plurality of wells ( 12 . 12 ' ) of the stationary form ( 1 ) and a vertically sliding shape ( 30 ), which is a first well ( 33 . 33 ' ) and a second recess ( 34 . 34 ' ), each with the core ( 11 . 11 ' ) of the stationary form ( 1' ), the first evaporation well ( 3 ' ) and the second evaporation well ( 4 ' ) are dimensioned such that they each have the first recess ( 33 . 33 ' ) and the second recess ( 34 . 34 ' ) in the vertically sliding form ( 30 ) cover.