JP2005179141A - Press molding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a press molding apparatus in which the quality of a molding is improved and the damage of a mold is prevented by bringing the opposite surfaces of alignment members in a mold alignment apparatus into no contact with each other to be movable in the alignment of the mold and after that, joining the opposite surfaces to each other to be made ummovable and keeping the alignment of the mold as it is to accurately adjust and strictly keep the concentricity of the mold and the parallelism of the mold faces. <P>SOLUTION: The press molding apparatus has a mold supporting apparatuses to which each mold is attached and the mold alignment apparatus 21 attached to at least one of the molds. The mold alignment apparatus 21 is provided with a plurality of alignment members and the opposite surfaces of the alignment members are brought into no contact with each other to be movable and is made unmovable by joining the opposite surfaces to each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a press molding apparatus.

  Conventionally, a molded product made of a material such as glass or resin is molded by pressing a glass material or a resin material into a mold for molding of a press molding apparatus, heating and softening, and then molding. Yes. In this case, a glass molded product or a resin molded product having a shape corresponding to the shape of the cavity of the mold composed of the upper mold and the lower mold is molded. Then, after the glass molded product or resin molded product is molded, the upper mold is raised or the lower mold is lowered to open the glass molded product or resin remaining on the lower mold. The molded product is taken out by a conveying member provided with suction means or the like and conveyed to a subsequent process.

  In such a press molding apparatus, in particular, when the molded product is a precision member, the degree of concentricity between the upper mold and the lower mold, and the mold mating surface of the upper mold and the lower mold It is necessary to keep the parallelism between the mold and the mold mating surface strictly. For example, when the molded product is an optical element such as a lens, the accuracy of the thickness of the optical element greatly affects the performance of the optical element. Therefore, it is necessary to manufacture not only the upper mold and the lower mold but also peripheral members such as a mold support device that supports the upper mold and the lower mold with high accuracy.

  However, since the manufacturing cost increases when the manufacturing accuracy is increased, it is practically impossible to manufacture all the members with high accuracy comparable to the accuracy of the cavity and the die mating surface. Therefore, inevitable errors are included in the shape and size of each member, and the concentricity and parallelism cannot be kept strictly. However, an apparatus that absorbs the errors of the concentricity and parallelism by forming the upper mold or the lower mold in a floating state in which the floating mold can move freely using a floating support device has been proposed ( For example, see Patent Document 1.) However, since the apparatus performs molding in a state where the upper mold or the lower mold can move freely, the accuracy of the molded product cannot be sufficiently increased, and high accuracy is required like an optical element such as a lens. The formed product cannot be molded.

Therefore, a die support device that supports the upper die or the lower die is provided with a centering mechanism having a ball joint or the like, and the upper die or the lower die can be tilted by the centering mechanism. Then, after adjusting the concentricity and parallelism, a technique is proposed in which the aligning device is locked by a lock mechanism and the upper mold or the lower mold is fixed. In this case, since the positional relationship between the upper mold and the lower mold is fixed after adjusting the concentricity and parallelism, the concentricity and parallelism can be maintained, and a highly accurate molded product. Can be obtained.
Japanese Patent Laid-Open No. 9-124326

  However, the alignment mechanism in the conventional press molding apparatus adjusts the position and posture of the adjustment members in a state where one adjustment member and the other adjustment member are in contact with each other, such as a ball joint. It has become. For this reason, sliding dynamic friction is generated on the contact surfaces of the adjusting members, the mutual movement of the adjusting members is hindered, and it is difficult to finely adjust the position and posture of the adjusting members. Further, the alignment mechanism uses fixing means using screws such as bolts and nuts to fix the adjusting members together. Therefore, after adjusting the concentricity and parallelism, when performing screw tightening to fix the adjusting members, the rotational moment applied to the fixing means for screw tightening is transmitted to the adjusting member. The positions and postures of the adjustment members are shifted. Therefore, in the conventional press molding apparatus, the concentricity between the upper mold and the lower mold and the parallelism between the mold mating surface of the upper mold and the mold mating surface of the lower mold are strictly set. It was not possible to maintain a sufficiently high precision molded product.

  The present invention solves the problems of the conventional press forming apparatus, and can move the aligning members of the aligning apparatus in the non-contact state with each other when aligning the mold. After that, the opposing surfaces are coupled to each other so as to be immovable, and maintain the state where the mold is aligned, so that the concentricity of both molds and the mold mating surface An object of the present invention is to provide a press molding apparatus that can improve the quality of a molded product and can prevent a mold from being damaged by accurately adjusting the parallelism and maintaining the accuracy. And

  For this purpose, the press molding apparatus of the present invention has a pair of molds, a mold support device to which each mold is attached, and a mold alignment device attached to at least one of the mold support devices. The mold aligning apparatus includes a plurality of aligning members, and allows the opposed surfaces of the aligning members to move in a non-contact state with each other, and couples the opposed surfaces to each other so as not to move. .

  In another press molding apparatus of the present invention, the opposing surface is a spherical surface, and one of the alignment members can be spherically moved with respect to the other when the opposing surface is in a non-contact state.

  In still another press molding apparatus of the present invention, the mold aligning device is attached to a lower mold support device.

  In still another press molding apparatus of the present invention, the mold aligning device further includes means for supplying a compressed fluid between the opposing surfaces or means for generating a magnetic force on the opposing surfaces.

  In still another press molding apparatus of the present invention, the mold aligning device further makes the opposing surfaces of the alignment members non-contact with each other when the mold is aligned. The surfaces are connected to each other to maintain the state where the mold is aligned.

  In still another press molding apparatus of the present invention, the mold aligning device further includes an aligning member whose opposing surface is a spherical surface, and an aligning member whose opposing surface is a flat surface.

  In still another press molding apparatus of the present invention, the mold aligning device further includes a cooling means.

  In still another press molding apparatus of the present invention, it further includes a molding chamber covering at least the periphery of the mold, and a part of the molding chamber follows the movement of the mold support apparatus or the mold. It consists of a deformable member.

  According to the present invention, the press molding apparatus includes a pair of molds, a mold support apparatus to which each mold is attached, and a mold alignment apparatus attached to at least one mold support apparatus. The mold aligning apparatus includes a plurality of aligning members, and allows the opposed surfaces of the aligning members to move in a non-contact state with each other, and couples the opposed surfaces to each other so as not to move. .

  In this case, the concentricity of both molds and the parallelism with the mold mating surface can be accurately adjusted and kept strictly, the quality of the molded product can be improved, and the mold It can be prevented from being damaged.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the press molding apparatus in the present embodiment is suitable for molding a molded product made of a material such as glass or resin. Mainly, the glass material or resin material is put into a molding die. It is used for press molding after being heated and softened, but may be used for molding a molded article made of any material. That is, in addition to glass and resin, for example, it can be used to form a molded article made of various materials such as metal, ceramic, paper, fiber, or a material obtained by appropriately mixing these materials. In the present embodiment, for the sake of explanation, a case where a molded product made of glass is molded will be described.

  FIG. 1 is a longitudinal sectional view showing a configuration of a press forming apparatus according to a first embodiment of the present invention.

  In the figure, 10 is a press molding apparatus, and 11 is an outer frame of the press molding apparatus 10. The outer frame 11 includes a plate-like bottom frame 11a, a side frame 11b having a lower end attached to the bottom plate frame 11a and extending upward and downward, and a ceiling frame 11c attached to the upper end of the side frame 11b. And an intermediate support frame 11d attached in the middle of the side frame 11b and extending inward.

  A lower frame 12a of the molding chamber 12 is attached to the upper surface of the bottom frame 11a, and a mold aligning device 21 is attached to the upper surface of the lower frame 12a. The mold aligning device 21 includes a fixed unit 22 as an aligning member fixed to the upper surface of the lower frame 12a, and a movable unit 23 as an aligning member that can move relative to the fixed unit 22. . A lower mold mounting member 24 including a lower mold clamping member 25 is attached to the upper surface of the movable unit 23, and a fixed mold is fixed to the upper surface of the lower mold mounting member 24 by the lower mold clamping member 25. A lower mold 15 as a mold is attached. In this case, the bottom frame 11a, the lower frame 12a, the mold aligning device 21, and the lower mold attachment member 24 function as a mold support device to which the lower mold 15 is attached. Here, on the upper surface of the lower mold 15, there are formed a cavity having a planar mold mating surface and a surface that forms a substantially lower half of the molded product. As described above, in the present embodiment, for the sake of explanation, the case where a molded product made of glass is molded will be described. Therefore, the material of the molded product is a glass material as a glass material. The molded article is an optical element such as a lens, a prism, a filter, or a mirror, a storage medium used in a computer such as a disk, an optical fiber coupling member, or the like.

  A driving device 29 is attached to the lower surface of the ceiling frame 11c, a connecting rod 29a of the driving device 29 extends downward, and a movable intermediate member 28 is attached to the lower end of the connecting rod 29a. ing. The movable intermediate member 28 is supported by the intermediate support frame 11d so as to be movable in the vertical direction and immovable in the lateral direction. In this case, a rolling guide device using balls or rollers like a linear guide way may be provided between the movable intermediate member 28 and the intermediate support frame 11d, or the movable intermediate member 28 and the intermediate support frame. A hydrostatic bearing can be arranged so that the hydrostatic pressure is maintained in a non-contact state with 11d. An upper mold attachment member 27 having an upper mold clamp member 26 is attached to the lower surface of the movable intermediate member 28, and the upper mold clamp member 26 is movable on the lower surface of the upper mold attachment member 27. An upper mold 16 as a mold is attached. In this case, the ceiling frame 11c, the drive device 29, the connecting rod 29a, the movable intermediate member 28, and the upper mold attachment member 27 function as a mold support device to which the upper mold 16 is attached. Here, on the lower surface of the upper mold 16, there are formed a flat mold mating surface and a cavity having a shape that forms a substantially upper half of the molded product.

  The drive device 29 is, for example, a cylinder device including a piston driven by a high-pressure compressed fluid. In this case, the lower end portion of the piston rod attached to the piston is connected to the upper end portion of the connecting rod 29a. Then, by switching the flow of the compressed fluid supplied to the cylinder device, the piston is driven upward or downward, whereby the connecting rod 29a, the movable intermediate member 28, and the upper mold attaching member 27 are upward or downward. Moved to. Here, the compressed fluid is, for example, air, but may be another gas such as nitrogen gas or a liquid such as oil.

  Further, the drive device 29 may be an electric motor instead of a cylinder device, for example, a linear motor. In this case, the lower end portion of a reciprocating member (slider) as a rotor is connected to the upper end portion of the connecting rod 29a. Then, by switching the current supplied to the linear motor, the slider is driven upward or downward with respect to a fixed member as a stator, whereby the connecting rod 29a, the movable intermediate member 28, and the upper mold attaching member 27 is moved up or down. The driving device 29 may be a rotary electric motor such as a servo motor. In this case, the rotation of the rotating shaft is converted into a reciprocating motion by a motion direction converting device such as a ball screw nut. It is transmitted to the connecting rod 29a.

  When the mold is opened, the upper mold 16 positioned above the lower mold 15 moves downward by moving the movable intermediate member 28 and the upper mold mounting member 27 downward. Then, the lower mold 15 is approached. Subsequently, the mold mating surface of the upper mold 16 comes into contact with the mold mating surface of the lower mold 15 to perform mold closing, as shown in FIG. Further, the upper mold 16 is pressed against the lower mold 15 to perform mold clamping. When the mold is closed, the upper mold 16 and the lower mold 15 are combined and integrated, and a material is formed in a cavity (not shown) formed between the upper mold 16 and the lower mold 15. The molded product having the shape of the cavity is molded by pressing from above and below. When the material is a glass material, it is generally heated to a high temperature of about 300 to 600 [° C.] and softened.

  The material of the upper mold 16 and the lower mold 15 is, for example, a tungsten alloy, a stainless alloy, a cemented carbide, or the like, but any material may be used. In addition, when the material is a glass material, it is desirable that a thin film of one layer or two or more layers is formed on at least the surface of the cavity in order to prevent the glass material from adhering. The material of the thin film is, for example, hydrogenated amorphous carbon, diamond, titanium nitride, tantalum nitride, platinum iridium, platinum silicon or the like, but any material may be used.

  The molded product is preferably molded in a predetermined atmosphere such as an inert gas atmosphere, a clean gas atmosphere, and a dry gas atmosphere in order to prevent oxidation of the molded product surface, adhesion of foreign matters, and the like. Therefore, in the present embodiment, the upper mold 16 and the lower mold 15 perform molding of the molded product in the molding chamber 12. That is, a molding chamber 12 that covers at least the periphery of the mold is disposed. Therefore, a chamber side wall 12e is attached to the upper surface of the lower frame 12a via a support frame 12b. An upper surface plate 12c is attached to the upper end of the chamber side wall 12e, and a lower surface plate 12d is attached to the lower end. The chamber side wall 12e, the upper surface plate 12c, and the lower surface plate 12d constitute a cylindrical body or a rectangular tube body such as a square tube or a hexagonal tube. An opening that allows passage of the upper mold attachment member 27 is formed at the center of the upper surface plate 12c, and an opening that allows passage of the lower mold attachment member 24 is formed at the center of the lower surface plate 12d. Yes.

  Furthermore, between the upper surface plate 12c and the movable intermediate member 28, an upper flexible cylindrical body 18 made of a mold support device or a member that can be deformed following the movement of the mold, for example, a bellows-like bellows or the like. The lower end of the upper flexible cylindrical body 18 is preferably airtightly attached to the upper surface of the upper surface plate 12c, and the upper end is preferably airtightly attached to the lower surface of the movable intermediate member 28. The upper flexible cylindrical body 18 may be attached anywhere, for example, one end may be attached to the lower surface of the upper surface plate 12 c and the other end may be attached to the periphery of the lower end of the upper mold attachment member 27. . Further, between the lower surface plate 12d and the movable unit 23, there is a lower flexible cylindrical body 17 made of a mold support device or a member that can be deformed following the movement of the mold, for example, a bellows-like bellows. The upper end of the lower flexible cylindrical body 17 is preferably attached to the lower surface of the lower surface plate 12d, preferably in an airtight manner, and the lower end is attached to the upper surface of the movable unit 23, preferably in an airtight manner.

  The lower flexible cylindrical body 17 may be attached anywhere, for example, one end may be attached to the upper surface of the lower surface plate 12d and the other end may be attached around the upper end of the lower mold attachment member 24. . The upper flexible cylindrical body 18 and the lower flexible cylindrical body 17 are preferably made of a heat resistant material. Thereby, the molding chamber 12 surrounded by the chamber side wall 12e, the upper surface plate 12c, the lower surface plate 12d, the movable intermediate member 28, the movable unit 23, the upper flexible cylindrical body 18 and the lower flexible cylindrical body 17 is configured.

  Then, a gas supply pipe (not shown) is connected to the molding chamber 12 so as to be free of inert gas such as nitrogen gas, argon gas, helium gas, and krypton gas, dust (dust) and moisture. Generated dry air, that is, dry air can be supplied. In addition, a suction pipe (not shown) can be connected to discharge gas such as internal air, and the inside of the molding chamber 12 can be evacuated. Thereby, a molded product can be molded in a predetermined atmosphere. The chamber side wall 12e is provided with a working opening (not shown) for carrying out operations such as material loading and molded product unloading. A door that can be opened and closed is preferably attached to the working opening, but the door can be omitted. Furthermore, when it is not necessary to mold the molded product in a predetermined atmosphere, the molding chamber 12 can be omitted.

  In the present embodiment, when the mold aligning device 21 makes the movable unit 23 movable with respect to the fixed unit 22, the movable unit 23 and the fixed unit 22 are not in contact with each other, When fixed to the fixed unit 22, the movable unit 23 and the fixed unit 22 are attracted to each other. Then, in order to make the movable unit 23 and the fixed unit 22 non-contact with each other, a compressed fluid is supplied between the movable unit 23 and the fixed unit 22, and the movable unit 23 and the fixed unit 22 are held with static pressure. It is like that.

  Therefore, the compressed fluid from the compressed fluid supply source 31 is supplied to the fixed unit 22 via the supply pipeline 31a. Note that the pressure of the compressed fluid supplied to the fixed unit 22 is adjusted by a pressure control valve (not shown) disposed in the supply pipe 31a. The compressed fluid is, for example, air. In this case, it is desirable that the compressed fluid be dry air as purified dry air. If the compressed fluid is dry air, it does not contain dust and moisture, so the surface of the molded product is not contaminated. The compressed fluid may be another gas, but is preferably an inert gas such as nitrogen gas, argon gas, helium gas, or krypton gas. The compressed fluid supply source 31 is, for example, a gas cylinder, a pressure tank, a compressor, or the like, or a combination thereof, but may be any type.

  Further, in order to adsorb the movable unit 23 and the fixed unit 22 to each other, an atmospheric gas such as the compressed fluid or air is sucked from the fixed unit 22 by the suction device 32 through the suction pipe 32a. Yes. The suction device 32 is, for example, a vacuum pump, but may be any device.

  Next, the configuration of the mold aligning device 21 will be described in detail.

  FIG. 2 is an enlarged vertical sectional view of a first main part of the press molding apparatus showing the configuration of the die aligning apparatus according to the first embodiment of the present invention.

  In the present embodiment, the concentricity of the upper mold 16 and the lower mold 15 and the parallelism between the mold mating surface of the upper mold 16 and the mold mating surface of the lower mold 15 are adjusted. In this case, that is, when aligning the mold, the mold aligning device 21 makes the opposing surface of the movable unit 23 and the opposing surface of the fixed unit 22 non-contact with each other as shown in FIG. The movable unit 23 is movable with respect to the fixed unit 22. Therefore, on the fixed side facing surface 22a, which is the surface facing the movable unit 23 in the fixed unit 22, there is an ejection portion 34 that ejects the compressed fluid supplied from the compressed fluid supply source 31 via the supply pipeline 31a. It is arranged. The ejection part 34 is made of, for example, a porous body such as porous ceramics, and the compressed fluid passes through a gap formed in the ejection part 34 and communicates with each other. It ejects from many openings of the ejection part 34 in the fixed side opposing surface 22a.

  A supply flow path 33 and an annular flow path 33a connected to the supply pipe line 31a are formed inside the fixed unit 22, and the compressed fluid supplied from the compressed fluid supply source 31 via the supply pipe line 31a is Then, it flows into the ejection part 34 through the supply channel 33 and the annular channel 33a. Further, a discharge passage 35, a central discharge opening 35a and a peripheral discharge opening 35b connected to the suction pipe 32a are formed inside the fixed unit 22, and air and gas between the movable unit 23 and the fixed unit 22 are formed. Passes through the discharge flow path 35, the central discharge opening 35a and the peripheral discharge opening 35b, and is sucked and discharged by the suction device 32 through the suction conduit 32a. Here, the fixed-side facing surface 22a is a concave spherical surface having a predetermined curvature, and the movable-side facing surface 23a, which is a surface facing the fixed unit 22 in the movable unit 23, is a convex spherical surface having a predetermined curvature. . The curvature of the fixed side facing surface 22a and the curvature of the movable side facing surface 23a are substantially the same. As a result, the movable unit 23 can move spherically with respect to the fixed unit 22 when the fixed-side facing surface 22a and the movable-side facing surface 23a are not in contact with each other.

  Here, FIG. 2 shows a state in which the movable unit 23 and the fixed unit 22 are not in contact with each other when the mold is aligned, and the compressed fluid supplied from the compressed fluid supply source 31 is As shown by the arrows, it flows into the supply flow path 33 and is ejected from a large number of openings of the ejection portion 34. Thereby, the mold aligning device 21 functions in the same way as a static pressure bearing, and a static pressure film is formed between the fixed side facing surface 22a and the movable side facing surface 23a, and the fixed side facing surface 22a For example, a gap of about 2 to 3 [μm] is formed between the movable side facing surface 23a. For this reason, even if the downward pressing force due to the weight of the movable unit 23, the lower mold attachment member 24, the upper mold 16, the lower mold 15 and the like acts on the movable unit 23, the fixed-side facing surface 22a and the movable side A gap between the facing surface 23a is maintained. That is, the effect of holding static pressure can be obtained. Thereby, the movable unit 23 can move freely with respect to the fixed unit 22.

  However, it is desirable to reduce the downward pressing force acting on the movable unit 23 as much as possible. Therefore, the movable unit 23, the lower mold attaching member 24, etc. may be manufactured from a light material such as aluminum, or a hollow portion may be formed inside to reduce the weight.

  In addition, the dimension of the said clearance gap can be changed by adjusting the pressure of a compressed fluid, etc. For example, if it is about 0.1-100 [micrometer], the effect of a static pressure maintenance can be acquired. Moreover, the structure of the said ejection part 34 can be changed suitably, for example, it may replace with the member which formed the some communication hole which connects the annular flow path 33a and the fixed side opposing surface 22a instead of a porous body. it can. Furthermore, the configurations of the central discharge opening 35a and the peripheral discharge opening 35b can be changed as appropriate. For example, the central discharge opening 35a can be omitted or the diameter of the central discharge opening 35a can be reduced. In FIG. 2, the interval between the fixed-side facing surface 22a and the movable-side facing surface 23a is exaggerated for the sake of explanation, and is shown larger than the actual distance.

  Further, an upper mold 16 and a lower mold 15 are mounted on the upper surface of the lower mold mounting member 24. In this case, the upper mold 16 and the lower mold 15 are combined so that their mold mating surfaces are in close contact with each other, and their axial axes are coincident with each other. And it is mutually couple | bonded by the coupling member 13 for maintaining the state in which the shaft center mutually corresponded. That is, the upper mold 16 and the lower mold 15 are connected to each other in a state where the alignment is performed. The coupling member 13 has a removable structure, and is removed after the upper mold 16 is attached to the upper mold attaching member 27 as will be described later. The upper mold 16 and the lower mold 15 are respectively provided with flange portions 16a and 15a at the end opposite to the mold mating surface, and the lower mold 15 has a flange portion 15a with the lower mold clamp member 25. Is attached to the upper surface of the lower mold attaching member 24.

  In the example shown in FIG. 2, the upper surface of the lower mold mounting member 24 is inclined with respect to the lower surface due to an error included in the shape and size of the lower mold mounting member 24, that is, the lower mold mounting. The upper surface and the lower surface of the member 24 are not parallel. Therefore, it can be seen that the axis of the lower mold 15 and the upper mold 16 is inclined with respect to the axis A of the upper mold mounting member 27. In this case, if the upper mold 16 and the lower mold 15 are separately mounted on the upper mold mounting member 27 and the lower mold mounting member 24, respectively, the axis of the upper mold 16 and the lower mold The axis of the mold 15 is displaced, and the mold mating surface of the upper mold 16 and the mold mating surface of the lower mold 15 are not parallel, that is, the upper mold 16 and the lower mold 15 It can be seen that the concentricity and parallelism cannot be maintained. In addition, although the degree to which the upper surface of the lower mold mounting member 24 is inclined with respect to the lower surface is exaggerated for convenience of explanation, an error included in the shape and dimensions of the lower mold mounting member 24 is illustrated. Therefore, it is actually considered to be so small that it cannot be grasped visually.

  In the present embodiment, for convenience of explanation, the concentricity and parallelism of the upper mold 16 and the lower mold 15 can be maintained by an error included in the shape and dimensions of the lower mold mounting member 24. Although only the case where it disappears will be described, the mold aligning device 21 can be similarly applied to a case where it is caused by an error included in the shape or size of another member. For example, when the upper surface and the lower surface of the upper mold attachment member 27 are not parallel, when the mold mating surface and the upper surface of the upper mold 16 are not parallel, the mold mating surface and the lower surface of the lower mold 15 are not parallel. The present invention can also be applied to cases and the like, and can also be applied to cases caused by errors included in the shapes and dimensions of plural members.

  Further, as shown in FIG. 2, the upper flexible cylindrical body 18 includes attachment plates 18 a and 18 b as seal portions at the lower end and the upper end, respectively, and the attachment plate 18 a is formed on the upper surface of the upper surface plate 12 c of the molding chamber 12. The mounting plate 18b is preferably attached to the lower surface of the movable intermediate member 28, preferably in an airtight manner. The lower flexible cylindrical body 17 includes attachment plates 17a and 17b as seal portions at the lower end and the upper end, respectively, and the attachment plate 17a is attached to the upper surface of the movable unit 23, preferably in an airtight manner, and the attachment plate 17b Is preferably airtightly attached to the lower surface of the lower surface plate 12d of the molding chamber 12.

  Further, in order to make the movable unit 23 and the fixed unit 22 non-contact with each other, when a compressed fluid is supplied between the movable unit 23 and the fixed unit 22, a lower surface plate 12d, a support frame 12b, a lower frame 12a, When the space formed by the lower flexible cylindrical body 17, the movable unit 23, and the fixed unit 22 is sealed, the compressed fluid fills the space. Therefore, a communication opening (not shown) is formed in the support frame 12b and the like so that the compressed fluid flows out of the space to the outside.

  Next, an operation for aligning the mold in the press molding apparatus 10 having the above configuration will be described.

  FIG. 3 is an enlarged longitudinal sectional view of a second main part of the press molding apparatus showing the configuration of the die aligning apparatus according to the first embodiment of the present invention, and FIG. 4 is a mold according to the first embodiment of the present invention. It is a 3rd principal part expansion longitudinal cross-sectional view of the press molding apparatus which shows the structure of a type | mold centering apparatus.

  First, the upper mold 16 and the lower mold 15 are combined so that their mold mating surfaces are in close contact with each other and their axial centers coincide. In other words, the upper mold 16 and the lower mold 15 are combined so that they are aligned. Then, the coupling member 13 is attached to the upper mold 16 and the lower mold 15, and the upper mold 16 and the lower mold 15 are coupled to each other so as to maintain the alignment of itself. .

  Subsequently, as shown in FIG. 2, the lower mold 15 coupled to the upper mold 16 by the coupling member 13 is attached to the upper surface of the lower mold mounting member 24. In this case, the upper mold attachment member 27 attached to the movable intermediate member 28 is in a state of moving upward, and the lower surface of the upper mold attachment member 27 and the upper surface of the lower mold attachment member 24 are mutually connected. The upper mold 16 and the lower mold 15 connected to each other are opened more than the axial dimension. Then, the lower mold 15 is attached to the upper surface of the lower mold attachment member 24 by clamping the flange portion 15 a by the lower mold clamp member 25. In this case, as shown in FIG. 2, since the upper surface of the lower mold mounting member 24 is inclined with respect to the lower surface due to an error such as a processing error, the shaft centers of the lower mold 15 and the upper mold 16 are upper. The mold attachment member 27 is inclined with respect to the axis A. Therefore, the upper surface of the upper mold 16 and the lower surface of the upper mold mounting member 27 are not parallel, and the axis of the upper mold 16 and the axis A of the upper mold mounting member 27 are shifted.

  Subsequently, when the compressed fluid from the compressed fluid supply source 31 is supplied to the fixed unit 22, the compressed fluid is ejected from a large number of openings of the ejection portion 34, and the fixed side facing surface 22 a of the fixed unit 22 and the movable unit 23 are movable. A static pressure film is formed between the side facing surface 23a. Thereby, since the clearance gap between the said fixed side opposing surface 22a and the movable side opposing surface 23a is maintained, the said movable unit 23 can move freely with respect to the fixed unit 22. FIG.

  Subsequently, the driving device 29 is operated to move the upper mold attaching member 27 downward. When the upper mold attachment member 27 reaches a position where the mold is closed in the molding operation, the lower surface of the upper mold attachment member 27 is pressed against the upper surface of the upper mold 16. In this case, since the movable unit 23 can move freely with respect to the fixed unit 22, the upper mold 16 can also move freely. Therefore, the upper surface of the upper mold 16 can be parallel to the lower surface of the upper mold mounting member 27, and the axis of the upper mold 16 and the axis A of the upper mold mounting member 27 can be matched. Can do. Then, in a state in which the upper surface of the upper mold 16 and the lower surface of the upper mold mounting member 27 are parallel and the axis of the upper mold 16 and the axis A of the upper mold mounting member 27 are aligned, the flange The upper mold 16 is attached to the lower surface of the upper mold attachment member 27 by clamping the portion 16 a with the upper mold clamp member 26.

  As a result, the mold is aligned, the concentricity of the upper mold 16 and the lower mold 15, and the mold mating surface of the upper mold 16 and the mold mating surface of the lower mold 15. The upper mold 16 and the lower mold 15 are mounted on the upper mold mounting member 27 and the lower mold mounting member 24, respectively, in a state in which the parallelism of these is maintained strictly. As shown in FIG. 3, the shaft center B of the lower mold mounting member 24 and the movable unit 23 is in a state of being inclined and shifted from the shaft core A of the upper mold mounting member 27.

  Subsequently, the supply of the compressed fluid from the compressed fluid supply source 31 is stopped, and the compressed gas or the atmospheric gas such as air is sucked from the fixed unit 22 by the suction device 32. As a result, the compressed fluid and the atmospheric gas pass through the central discharge opening 35a, the peripheral discharge opening 35b and the discharge flow path 35 from between the fixed-side facing surface 22a and the movable-side facing surface 23a as indicated by arrows. Sucked. Therefore, the fixed side facing surface 22a and the movable side facing surface 23a are in close contact with each other as shown in FIG. In this case, the fixed side facing surface 22a is a concave spherical surface, the movable side facing surface 23a is a convex spherical surface, and the curvature of the fixed side facing surface 22a and the curvature of the movable side facing surface 23a are the same. Even if the axis B of the movable unit 23 is inclined, the movable side facing surface 23a can be in close contact with the fixed side facing surface 22a. Since the space between the fixed-side facing surface 22a and the movable-side facing surface 23a becomes a negative pressure by suction, the fixed-side facing surface 22a and the movable-side facing surface 23a are firmly connected.

  Thereby, the state in which the mold is aligned can be maintained. That is, since the movable unit 23 is fixed to the fixed unit 22, the concentricity of the upper mold 16 and the lower mold 15, and the mold mating surface of the upper mold 16 and the lower mold 15. The state in which the parallelism with the mold mating surface is strictly maintained is maintained.

  In addition, although the lower mold mounting member 24 and the movable unit 23 are inclined, the distance between the lower surface of the lower surface plate 12d of the molding chamber 12 and the upper surface of the movable unit 23 is not uniform, but the lower flexible cylindrical body 17 Is deformable, the inside and outside of the molding chamber 12 can be kept in a state of being blocked. Further, by moving the upper mold attachment member 27 downward, the distance between the upper surface of the upper surface plate 12c of the molding chamber 12 and the lower surface of the movable intermediate member 28 is reduced, but the upper flexible cylindrical body 18 can be deformed. The inner and outer sides of the molding chamber 12 can be maintained in a blocked state.

  Subsequently, when the coupling member 13 is removed, the upper mold 16 and the lower mold 15 are separable. When the driving device 29 is operated to move the upper mold mounting member 27 upward, the upper mold 16 attached to the upper mold mounting member 27 also moves upward, as shown in FIG. Thus, the mold mating surface of the upper mold 16 is separated from the mold mating surface of the lower mold 15.

  Thereby, a raw material can be mounted in the cavity not shown formed in the metal mold | die matching surface of the said lower metal mold | die 15, and shaping | molding can be started. In this case, the upper mold 16 and the lower mold 15 maintain the aligned state, the mold mating surfaces of the molds are parallel to each other, and the axes of the molds are aligned. Further, since the negative pressure is generated by suction between the fixed-side facing surface 22a and the movable-side facing surface 23a, and the fixed-side facing surface 22a and the movable-side facing surface 23a are in a strongly coupled state, The state in which the alignment is performed does not collapse. Therefore, the concentricity between the upper mold 16 and the lower mold 15 and the parallelism between the mold mating surface of the upper mold 16 and the mold mating surface of the lower mold 15 are strictly kept during the molding operation. Therefore, a sufficiently high-precision molded product can be formed.

  As described above, in the present embodiment, the mold aligning device 21 is provided with the fixed unit 22 fixed to the outer frame 11 of the press molding device 10 via the lower frame 12a and the lower mold attaching member 24. And a movable unit 23. When aligning the mold, the movable unit 23 and the fixed unit 22 are not in contact with each other, and the movable unit 23 can be moved with respect to the fixed unit 22. Therefore, the lower mold attachment member 24 can move following the upper mold 16 and the lower mold 15 combined in a state where alignment is performed, and the concentricity and the parallelism of the mold mating surfaces can be achieved. The upper mold 16 and the lower mold 15 are attached to the upper mold mounting member 27 and the lower mold mounting member 24, respectively, in a state in which is strictly maintained. When the movable unit 23 is fixed to the fixed unit 22, the movable unit 23 and the fixed unit 22 are attracted to each other. Therefore, the state in which the concentricity and the parallelism of the die mating surfaces are strictly maintained is maintained as it is. In addition, when the movable unit 23 is fixed to the fixed unit 22, the movable unit 23 does not move relative to the fixed unit 22.

  Further, since the compressed fluid is supplied between the movable side facing surface 23a of the movable unit 23 and the fixed side facing surface 22a of the fixed unit 22 to form a static pressure film, the movable unit 23, the lower mold attaching member 24, Even if the downward pressing force due to the weight of the upper mold 16 and the lower mold 15 acts on the movable unit 23, the gap between the movable side facing surface 23a and the fixed side facing surface 22a can be maintained. . Furthermore, the fixed side facing surface 22a is a concave spherical surface, the movable side facing surface 23a is a convex spherical surface, and the curvature of the fixed side facing surface 22a and the curvature of the movable side facing surface 23a are the same. Therefore, when the mold is aligned, the movable unit 23 can be moved smoothly and fine adjustment is possible.

  Further, when the movable unit 23 is fixed to the fixed unit 22, a negative pressure is generated between the movable side facing surface 23 a and the fixed side facing surface 22 a by suction, so that the movable unit 23 and the fixed unit 22 are strong. Combined with In this case, the fixed-side facing surface 22a is a concave spherical surface, the movable-side facing surface 23a is a convex spherical surface, and the curvature of the fixed-side facing surface 22a and the curvature of the movable-side facing surface 23a are the same. Even if the axis B of the movable unit 23 is inclined, the movable side facing surface 23a can be in close contact with the fixed side facing surface 22a.

  Further, an upper flexible cylindrical body 18 made of a bellows-like bellows or the like is attached between the upper surface plate 12c of the molding chamber 12 and the movable intermediate member 28, and the lower surface of the lower surface plate 12d of the molding chamber 12 and the upper surface of the movable unit 23 A lower flexible cylindrical body 17 made of a bellows-like bellows or the like is attached between them. Therefore, even if the mold is aligned and the axis B of the movable unit 23 is inclined, the lower flexible cylindrical body 17 is deformed following the movement of the movable unit 23. The outside can be maintained in a blocked state.

  In the present embodiment, as means for bringing the movable unit 23 and the fixed unit 22 into non-contact with each other, means for supplying a compressed fluid between the movable side facing surface 23a and the fixed side facing surface 22a. However, other means can be adopted. For example, means for generating a magnetic force such as an electromagnet may be provided on the movable side facing surface 23a and the fixed side facing surface 22a so that the movable unit 23 and the fixed unit 22 are not in contact with each other by the magnetic force. Furthermore, a means for supplying a compressed fluid and a means for generating a magnetic force can be used in combination.

  Further, in the present embodiment, as means for adsorbing the movable unit 23 and the fixed unit 22 to each other, means for applying a negative pressure between the movable side facing surface 23a and the fixed side facing surface 22a is adopted. However, other means can be employed. For example, means for generating a magnetic force such as an electromagnet may be provided on the movable side facing surface 23a and the fixed side facing surface 22a, and the movable unit 23 and the fixed unit 22 may be attracted to each other by the magnetic force. Furthermore, a means for making a negative pressure and a means for generating a magnetic force can be used in combination.

  In addition, a cooling means (not shown) can be disposed on the movable unit 23 or the lower mold attachment member 24. When molding a molded product made of glass, as described above, it is necessary to heat the glass material as a raw material to a high temperature of about 300 to 600 [° C.], so that the mold aligning device 21 is also exposed to a high temperature ( In addition) In this case, there is a possibility that the means for supplying the compressed fluid, the means for generating a magnetic force, the mounting plate 17a, etc. may be altered by the influence of heat or malfunction. Therefore, by disposing the cooling means, the means for supplying the compressed fluid, the means for generating a magnetic force, the mounting plate 17a and the like can be protected from the influence of heat. The cooling means includes, for example, a pipe for circulating a coolant such as cooling water, a heat radiating fan, and a heat pipe, but may be of any kind.

  Next, a second embodiment of the present invention will be described. In addition, about what has the same structure as 1st Embodiment, the description is abbreviate | omitted by providing the same code | symbol. The description of the same operation and the same effect as those of the first embodiment is also omitted.

  FIG. 5 is an enlarged vertical sectional view of a first main part of a press molding apparatus showing the configuration of a mold aligning apparatus according to the second embodiment of the present invention, and FIG. 6 is a mold according to the second embodiment of the present invention. It is a 2nd principal part expansion longitudinal cross-sectional view of the press molding apparatus which shows the structure of a type | mold centering apparatus.

  As shown in FIGS. 5 and 6, the mold aligning device 21 in the present embodiment replaces the fixed unit 22 in the first embodiment and is aligned on the upper surface of the lower frame 12 a. And a horizontal unit 22-1 as an alignment member that can move in the horizontal direction with respect to the basic unit 22-2. And the movable unit 23 is arrange | positioned above this horizontal unit 22-1 so that it can move with respect to the horizontal unit 22-1. 5 and 6, members constituting the outer frame 11 and the molding chamber 12 of the press molding apparatus 10 are not shown.

  In this case, the configurations of the movable side facing surface 23a of the movable unit 23 and the fixed side facing surface 22a of the horizontal unit 22-1 are the same as those in the first embodiment, and the movable side facing surface 23a and the fixed side facing surface are the same. A compressed fluid is supplied between the surface 22a and a static pressure film to form a gap between the movable-side facing surface 23a and the fixed-side facing surface 22a. Further, the movable unit 23 is fixed to the horizontal unit 22-1 by applying a negative pressure by suction between the movable side facing surface 23a and the fixed side facing surface 22a.

  Furthermore, the movable side facing surface 23a and the fixed side facing surface 22a are configured except that the horizontal side facing surface 22b of the horizontal unit 22-1 and the base side facing surface 22c of the base unit 22-2 are flat. It is the same as that of the structure. Therefore, a compressed fluid is supplied between the horizontal facing surface 22b and the base facing surface 22c to form a static pressure film, and a gap between the horizontal facing surface 22b and the base facing surface 22c is maintained. It is supposed to be. Accordingly, the horizontal unit 22-1 can move in the horizontal direction with respect to the base unit 22-2. Further, the movable unit 23 is fixed to the horizontal unit 22-1 by applying a negative pressure by suction between the horizontal facing surface 22 b and the base facing surface 22 c.

  When aligning the mold in the present embodiment, the lower mold 15 coupled to the upper mold 16 by the coupling member 13 is attached to the upper surface of the lower mold mounting member 24, and the movable side facing surface 23 a Compressed fluid is supplied between the fixed side facing surface 22a and between the horizontal side facing surface 22b and the base side facing surface 22c. As a result, as shown in FIG. 5, gaps are formed between the movable-side facing surface 23a and the fixed-side facing surface 22a, and between the horizontal-side facing surface 22b and the base-side facing surface 22c. The movable unit 23 can move freely with respect to the horizontal unit 22-1 and the horizontal unit 22-1 can move freely with respect to the base unit 22-2 in the horizontal direction.

  Then, the upper mold 16 is attached to the lower surface of the upper mold mounting member 27 to align the mold, and between the movable side facing surface 23a and the fixed side facing surface 22a and between the horizontal side facing surface 22b. A negative pressure is generated between the base-side facing surface 22c. As a result, as shown in FIG. 6, the movable-side facing surface 23a and the fixed-side facing surface 22a, and the horizontal-side facing surface 22b and the base-side facing surface 22c are in a strongly coupled state. It is possible to maintain the state in which the alignment is performed.

  As described above, in the present embodiment, the mold aligning device 21 includes the base unit 22-2, the horizontal unit 22-1 and the lower metal plate fixed to the outer frame 11 of the press molding device 10 via the lower frame 12a. It has a movable unit 23 to which a mold attaching member 24 is attached. Then, when aligning the mold, the horizontal unit 22-1 and the base unit 22-2 are not in contact with each other, and the horizontal unit 22-1 is placed in a horizontal direction with respect to the base unit 22-2. The movable unit 23 and the horizontal unit 22-1 are made non-contact with each other, and the movable unit 23 is movable with respect to the horizontal unit 22-1. Therefore, the lower mold attachment member 24 can move in a wider range compared to the first embodiment, and the upper mold 16 and the lower mold combined in a state where alignment is performed. The mold 15 can follow appropriately.

  Next, a third embodiment of the present invention will be described. In addition, about what has the same structure as 1st and 2nd embodiment, the description is abbreviate | omitted by providing the same code | symbol. Also, the description of the same operations and effects as those of the first and second embodiments is omitted.

  FIG. 7 is an enlarged view of a main part showing an upper mold mounting apparatus according to the third embodiment of the present invention, and FIG. 8 is a first view showing the structure of the upper mold mounting apparatus according to the third embodiment of the present invention. FIG. 9 is a partial cross-sectional view, FIG. 9 is a second partial cross-sectional view showing the structure of the upper mold mounting apparatus according to the third embodiment of the present invention, and FIG. 10 is the upper mold mounting according to the third embodiment of the present invention. FIG. 11 is a fourth partial cross-sectional view showing the structure of the upper mold mounting apparatus according to the third embodiment of the present invention, and FIG. 12 is a third partial cross-sectional view showing the structure of the apparatus. It is a 5th partial sectional view showing the structure of the upper metallic mold attachment device in an embodiment.

  In the present embodiment, an upper mold mounting apparatus and a lower mold mounting apparatus for mounting the upper mold 16 and the lower mold 15 to the upper mold mounting member 27 and the lower mold mounting member 24 will be described. Since the upper mold mounting device and the lower mold mounting device have substantially the same configuration, only the upper mold mounting device will be described here, and the description of the lower mold mounting device will be omitted.

  As shown in FIG. 7, a tapered surface is formed around the flange portion 16 a of the upper mold 16, and an inclined surface corresponding to the tapered surface is also formed on the upper mold clamp member 26. The number of the upper mold clamp members 26 may be any number as long as it is plural, but is preferably three or more. Then, with the inclined surface in contact with the taper surface, the upper mold clamping member 26 is pulled upward in FIG. 7 to clamp the flange portion 16a, thereby causing the flange portion 16a to move vertically upward. Along with the force, a horizontal force directed toward the axis is applied. Therefore, the upper mold 16 is firmly attached to the upper mold attaching member 27, and the upper mold 16 and the upper mold attaching member 27 are not displaced during the molding operation.

  Here, as shown in FIG. 8, the upper mold clamping member 26 is moved upward as shown by the arrow C by the actuator 41 attached to the upper mold mounting member 27 via the tie rod 42. It can be pulled up. In addition, although the said actuator 41 is cylinder apparatuses, such as a pneumatic cylinder, for example, an electric motor may be used and what kind of thing may be sufficient as it. Further, the upper mold clamp member 26 can be rotated around the tie rod 42 as indicated by the arrow D, and adjusted so that the inclined surface properly contacts the tapered surface of the flange portion 16a. Can be done.

  In the example shown in FIG. 8, a plurality of actuators 41 corresponding to each upper mold clamp member 26 are used. However, as shown in FIG. The upper mold clamp member 26 can be pulled upward as indicated by an arrow C. In this case, the upper ends of the tie rods 42 are connected by the connecting member 42a, and the operating shaft 41a of the actuator 41 is connected to the connecting member 42a. In the example shown in FIG. 9, all upper mold clamp members 26 are rotated as indicated by arrow D by the clamp rotation motor 43. The clamp rotation motor 43 is attached to the connecting member 42a, and the rotation of the drive pulley 43a attached to the rotation shaft of the clamp rotation motor 43 is transmitted to the driven pulley 42b attached to the tie rod 42 by the belt 43b. ing.

  Further, the upper mold 16 can be attached to the upper mold attachment member 27 without using the upper mold clamp member 26. In this case, as shown in FIG. 10, the upper end of the linear body 44 whose lower end is fixed to the center of the flange portion 16a is connected to the operating shaft 41a of the actuator 41 via the ball joint 44b, and is indicated by an arrow. As shown, the upper mold 16 is pulled upward. The linear body 44 may be a rod or a wire.

  Further, the upper mold 16 can be attached to the upper mold attaching member 27 by negative pressure. In this case, as shown in FIG. 11, a discharge flow path 45 is formed in the upper mold mounting member 27, and the suction device 32 or the like is used between the lower surface of the upper mold mounting member 27 and the upper surface of the flange portion 16a. Atmospheric gas such as air is sucked from As a result, a negative pressure is generated between the lower surface of the upper mold mounting member 27 and the upper surface of the flange portion 16a by suction, so that the lower surface of the upper mold mounting member 27 and the upper surface of the flange portion 16a are firmly coupled. It becomes a state.

  Further, the upper mold 16 can be attached to the upper mold attaching member 27 by magnetic force. In this case, as shown in FIG. 12, an electromagnet 47 is disposed in a cavity 46 formed in the upper mold attachment member 27, and the flange portion 16 a is attracted by the magnetic force generated by the electromagnet 47. As a result, the lower surface of the upper mold mounting member 27 and the upper surface of the flange portion 16a are firmly coupled by a magnetic force.

  Thus, in the present embodiment, the upper mold 16 and the lower mold 15 are firmly fixed to the upper mold mounting member 27 and the lower mold mounting member 24 by the upper mold mounting apparatus and the lower mold mounting apparatus. Therefore, the upper mold 16 and the upper mold mounting member 27 or the lower mold 15 and the lower mold mounting member 24 are not displaced during the molding operation.

  Note that a plurality of types of upper mold mounting apparatus and lower mold mounting apparatus can be used in combination as required. For example, an upper mold mounting apparatus as shown in FIG. 8 and an upper mold mounting apparatus as shown in FIG. 11 or 12 can be used in combination. Thereby, the upper mold 16 and the lower mold 15 can be firmly attached by the upper mold attaching member 27 and the lower mold attaching member 24.

  Next, a fourth embodiment of the present invention will be described. In addition, about the thing which has the same structure as 1st-3rd embodiment, the description is abbreviate | omitted by providing the same code | symbol. Explanation of the same operations and effects as those of the first to third embodiments is also omitted.

  FIG. 13 is a first view showing a mold according to the fourth embodiment of the present invention, and FIG. 14 is a second view showing a mold according to the fourth embodiment of the present invention.

  In the present embodiment, a case will be described in which the mold is aligned while the upper mold 16 and the lower mold 15 are previously attached to the upper mold mounting member 27 and the lower mold mounting member 24, respectively. In this case, it is assumed that the mold aligning device 21 has a configuration as shown in FIGS. Further, as shown in FIGS. 13 and 14, the mold includes engagement means for engaging the upper mold 16 and the lower mold 15 with each other, and the upper mold 16, the lower mold 15, In a state where the molds are aligned with each other being engaged with each other, that is, the concentricity of the upper mold 16 and the lower mold 15 and the mold mating surface of the upper mold 16 The parallelism with the die mating surface of the lower die 15 is maintained.

  In the example shown in FIG. 13, an engagement protrusion 16 b as an engagement means is formed on the mold mating surface of the upper mold 16, and an engagement as an engagement means is formed on the mold mating surface of the lower mold 15. A concavity 15b is formed. The engagement protrusion 16b has a tapered shape with a tapered tip, and the engagement recess 15b also has a tapered shape so as to correspond to the engagement protrusion 16b. Then, when the upper mold 16 and the lower mold 15 are coupled to each other, the engagement protrusion 16b fits into and engages with the engagement recess 15b, and the mold is aligned. It becomes the state. Further, in the example shown in FIG. 14, an annular engagement guide member 16 c as an engagement means is formed around the lower end portion of the upper mold 16. When the upper mold 16 and the lower mold 15 are coupled to each other, the upper end portion of the lower mold 15 is fitted and engaged in the engagement guide member 16c, and the mold is aligned. It becomes a broken state.

  Next, an operation for aligning the mold in the present embodiment will be described.

  First, the upper die 16 is attached to the upper die attachment member 27 by the upper die clamp member 26, and the lower die 15 is attached to the lower die attachment member 24 by the lower die clamp member 25. Note that the upper mold attaching apparatus and the lower mold attaching apparatus described in the third embodiment can also be used.

  Subsequently, when the compressed fluid is supplied from the compressed fluid supply source 31, as described in the second embodiment, the compressed fluid flows between the movable side facing surface 23a and the fixed side facing surface 22a, and It is supplied between the horizontal facing surface 22b and the foundation facing surface 22c. As a result, as shown in FIG. 5, gaps are formed between the movable-side facing surface 23a and the fixed-side facing surface 22a, and between the horizontal-side facing surface 22b and the base-side facing surface 22c. The movable unit 23 can move freely with respect to the horizontal unit 22-1 and the horizontal unit 22-1 can move freely with respect to the base unit 22-2 in the horizontal direction.

  Subsequently, the driving device 29 is operated to move the upper mold attaching member 27 downward. When the upper mold attaching member 27 reaches a position where mold closing is performed in the molding operation, the upper mold 16 and the lower mold 15 are engaged with each other. In this case, the movable unit 23 can move freely with respect to the horizontal unit 22-1 and the horizontal unit 22-1 can move freely with respect to the base unit 22-2 in the horizontal direction. The lower mold 15 is also in a state where it can move freely. For this reason, the mold mating surface of the lower mold 15 can be made parallel to the mold mating surface of the upper mold 16, and the axis of the lower mold 15 can be made coincident with the axis of the upper mold 16. . That is, the mold is aligned.

  Subsequently, the supply of the compressed fluid from the compressed fluid supply source 31 is stopped, and the compressed gas or the atmospheric gas such as air is sucked by the suction device 32. Thereby, a negative pressure is applied between the movable-side facing surface 23a and the fixed-side facing surface 22a and between the horizontal-side facing surface 22b and the base-side facing surface 22c. Then, as shown in FIG. 6, the movable side facing surface 23a and the fixed side facing surface 22a, and the horizontal side facing surface 22b and the base side facing surface 22c are firmly coupled, The state in which alignment is performed can be maintained.

  As described above, in the present embodiment, since the upper mold 16 and the lower mold 15 are provided with engaging means for mutual engagement, the upper mold 16 and the lower mold 15 are placed in advance. The molds can be aligned while being attached to the mold attachment member 27 and the lower mold attachment member 24, respectively.

  In the first to fourth embodiments, the case where the press molding apparatus 10 moves the upper mold 16 in the vertical direction has been described. However, the lower mold 15 is moved in the vertical direction. It can also be. In the first to third embodiments, the vertical press molding apparatus 10 in which the upper mold 16 moves in the vertical direction (vertical direction) has been described. However, the upper mold 16 or the lower mold 15 is used. It can also be applied to a horizontal type press forming apparatus in which is moved in the horizontal direction (horizontal direction). Furthermore, the present invention can be applied not only to a press molding apparatus in which only one of the upper mold 16 or the lower mold 15 moves, but also to a press molding apparatus in which both the upper mold 16 and the lower mold 15 move.

  In the first to fourth embodiments, the case where the die aligning device 21 is attached to the lower die attaching member 24 has been described. However, the die aligning device 21 is attached to the upper die attaching member 27. It can also be attached to both the lower mold attaching member 24 and the upper mold attaching member 27.

  Furthermore, in the present embodiment, the case of molding a molded product made of glass has been described. However, in the molding of a molded product made of a material such as glass or resin, the material is heated immediately before molding, There is a case where it is placed in an atmosphere, for example, an inert gas atmosphere, or the molded product is cooled immediately after molding. In such a case, a heating device, a cooling device, an inert gas supply device, and the like can be disposed around the press molding device 10. As a result, the material and the molded product are directly heated or cooled in an inert gas atmosphere, placed on the lower mold 15, or formed between the upper mold 16 and the lower mold 15. It becomes possible to heat or cool the material and the molded product sandwiched in the cavity space.

  The present invention is not limited to the above-described embodiment, and various modifications can be made based on the spirit of the present invention, and they are not excluded from the scope of the present invention.

It is a longitudinal cross-sectional view which shows the structure of the press molding apparatus in the 1st Embodiment of this invention. It is a 1st principal part expansion longitudinal cross-sectional view of the press molding apparatus which shows the structure of the metal mold centering apparatus in the 1st Embodiment of this invention. It is a 2nd principal part expansion longitudinal cross-sectional view of the press molding apparatus which shows the structure of the metal mold aligning apparatus in the 1st Embodiment of this invention. It is a 3rd principal part expansion longitudinal cross-sectional view of the press molding apparatus which shows the structure of the metal mold centering apparatus in the 1st Embodiment of this invention. It is a 1st principal part expansion longitudinal cross-sectional view of the press molding apparatus which shows the structure of the metal mold aligning apparatus in the 2nd Embodiment of this invention. It is a 2nd principal part expansion longitudinal cross-sectional view of the press molding apparatus which shows the structure of the metal mold centering apparatus in the 2nd Embodiment of this invention. It is a principal part enlarged view which shows the upper mold | type attachment apparatus in the 3rd Embodiment of this invention. It is the 1st partial sectional view showing the structure of the upper metallic mold attachment device in a 3rd embodiment of the present invention. It is the 2nd partial sectional view showing the structure of the upper metallic mold attachment device in a 3rd embodiment of the present invention. It is the 3rd partial sectional view showing the structure of the upper metallic mold attachment device in a 3rd embodiment of the present invention. It is the 4th partial sectional view showing the structure of the upper metallic mold attachment device in a 3rd embodiment of the present invention. It is a 5th partial sectional view showing the structure of the upper metallic mold attachment device in a 3rd embodiment of the present invention. It is a 1st figure which shows the metal mold | die in the 4th Embodiment of this invention. It is a 2nd figure which shows the metal mold | die in the 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Press molding apparatus 11a Bottom part frame 11c Ceiling part frame 12 Molding chamber 12a Lower frame 15 Lower mold 16 Upper mold 21 Mold alignment apparatus 22 Fixed unit 22-1 Horizontal unit 22-2 Base unit 22a Fixed side opposing surface 22b Horizontal facing surface 22c Base facing surface 23 Movable unit 23a Movable facing surface 24 Lower mold mounting member 27 Upper mold mounting member 28 Movable intermediate member 29 Driving device 29a Connecting rod

Claims (8)

(A) a pair of molds;
(B) a mold support device to which each mold is attached;
(C) a mold aligning device attached to at least one of the mold support devices;
(D) The mold aligning device includes a plurality of alignment members, is movable with the opposing surfaces of the alignment members being in non-contact with each other, and the opposing surfaces are coupled to each other and cannot be moved. A press molding apparatus characterized by the above. The press molding apparatus according to claim 1, wherein the facing surface is a spherical surface, and one of the alignment members is capable of spherical motion with respect to the other when the facing surface is in a non-contact state. The press molding apparatus according to claim 1 or 2, wherein the mold aligning device is attached to a lower die support device. The press molding apparatus according to any one of claims 1 to 3, wherein the mold aligning device includes means for supplying a compressed fluid between the opposing surfaces, or means for generating a magnetic force on the opposing surfaces. The mold aligning device makes the opposed surfaces of the alignment members non-contact with each other when aligning the mold, and connects the opposed surfaces to each other to align the molds. The press molding apparatus of any one of Claims 1-4 which maintain the performed state. The press molding apparatus according to any one of claims 1 to 5, wherein the mold aligning device includes an aligning member in which the facing surface is a spherical surface, and an aligning member in which the facing surface is a flat surface. The press molding apparatus according to claim 1, wherein the mold aligning device includes a cooling unit. 8. The molding chamber according to claim 1, further comprising a molding chamber that covers at least the periphery of the mold, wherein a part of the molding chamber is formed of a member that can be deformed following the movement of the mold support device or the mold. The press molding apparatus according to item 1.

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