JP2008200889A - Degassing method, degassing apparatus, core manufacturing method and laminated support - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a degassing method capable of obtaining a molded product having stable capacities by kneading mixture pieces of a plastic flowable material and a hard filler to remove the gas in the obtained kneaded matter. <P>SOLUTION: The mixture pieces 56A of the plastic flowable material and the hard fiber are charged in a cylinder 42 and pressurized in the cylinder 42 under a vacuum atmosphere or a vacuum environment reduced in pressure with respect to an atmospheric pressure. By this method, the air between the mixture pieces 56A of the plastic flowable material and the hard filler charged in the cylinder 42 and the gas contained in the mixture pieces 56A are expelled from the cylinder 42 at the same time while pressurizing the mixture pieces 56A and sucked to the outside of the cylinder 42. Accordingly, the gas is removed from the kneaded matter 56 of the mixture pieces 56A of the plastic flowable material and the hard filler. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention includes a gas removal method and a gas removal apparatus for kneading a mixture piece of a plastic fluid material and a hard filler to remove gas in the kneaded product, and a hollow portion formed in a lamination direction of a laminated elastic body. In particular, the present invention relates to a method for manufacturing a core and a laminated support configured using the core manufactured by the manufacturing method.

  Conventionally, a laminated support in which elastic plates such as rubber and rigid plates such as metal are alternately laminated has been used as a support for seismic isolation devices. Such laminated supports include, for example, a structure in which a hollow portion is formed at the center and a lead core is press-fitted into the hollow portion (see Patent Document 1). With such a configuration, when the laminated support body undergoes shear deformation, the core plastically deforms to function as a damper.

  By the way, as a core, the thing made from lead (lead plug) whose behavior of plastic deformation is stable is often used. However, the cost of lead plugs is high when they are discarded. For this reason, a kneaded product of a plastic fluid material and a hard filler is used instead of the lead plug.

  The kneading of the plastic fluid material and the hard filler is performed using a kneader. A mixture piece 100A of the plastic fluid material and the hard filler kneaded by the kneader is formed into a plurality of lumps as shown in FIG. 8A, and the mixture pieces are put into the molding machine 102 and heated as necessary. Pressurize (FIG. 8 (B) and FIG. 8 (C)), and shape | mold into the shape of a core.

When a plurality of lump-like mixture pieces 100A are put into the molding machine 102, gaps are formed between the mixture pieces 100A, and when the core is molded by pressurizing and kneading in this state, air (gas) is generated. It will be taken into the kneaded product 100. In addition, the gas contained in the mixture piece 100A is also contained in the kneaded product 100, and the gas is mixed into the core formed of the kneaded product. When the amount of air mixed in the core increases, the mechanical characteristics at the time of plastic deformation of the core become unstable, and stable damping performance cannot be obtained.
Japanese Patent Publication No. 7-84815

  In view of the above facts, an object of the present invention is to obtain a molded product with stable performance by kneading a mixture piece of a plastic fluid material and a hard filler to remove gas in the kneaded product.

  The invention according to claim 1 is a gas removal method of kneading a mixture piece of a plastic fluid material and a hard filler to remove gas in the kneaded product, and the step of introducing the mixture piece into a pressure chamber; A step of placing the pressurizing chamber in a vacuum atmosphere or a decompressed environment depressurized with respect to atmospheric pressure and pressurizing the mixture piece charged in the pressurizing chamber. Yes.

  In the gas removal method according to the first aspect, the mixture piece of the plastic fluid material and the hard filler charged in the pressurizing chamber is pressurized under a vacuum atmosphere or a reduced pressure environment reduced to the atmospheric pressure.

  Thereby, the air between the mixture pieces thrown into the pressurizing chamber and the gas contained in the mixture pieces are pushed out of the pressurizing chamber while being pressurized and simultaneously sucked out of the pressurizing chamber. . Accordingly, the gas is removed from the kneaded mixture.

  According to a second aspect of the present invention, the mixture piece put into the pressurizing chamber has a cross-sectional area smaller than a cross-sectional area of the pressurizing chamber communicated with the pressurizing chamber and orthogonal to the pressurizing direction. It is characterized by passing through a communicating portion having the cross-sectional area, and communicating with the communicating portion and having a cross-sectional area larger than the cross-sectional area of the communicating portion.

  In the gas removal method according to the second aspect, the mixture piece put into the pressurizing chamber is kneaded by being pressurized and passes through the communicating portion. At this time, since the cross-sectional area in the direction orthogonal to the pressurizing direction of the communicating portion is smaller than the cross-sectional area of the pressurizing chamber, than the magnitude of the force acting on the mixture piece in the pressurizing chamber per unit area, The magnitude of the force acting per unit area of the kneaded material passing through the communicating portion is larger. For this reason, since the surface area of the kneaded material is increased when passing through the communication path, the gas in the kneaded material escapes from the surface of the kneaded material.

  When the kneaded material is sent out from the communicating portion to a chamber having a cross-sectional area larger than the cross-sectional area of the communicating portion, the gas that has escaped from the kneaded material is released into the chamber. Accordingly, the gas is removed from the kneaded mixture.

  The invention according to claim 3 is a gas removal method for kneading a mixture piece of a plastic fluid material and a hard filler to remove gas in the kneaded product, and a pressurizing chamber into which the mixture piece is charged, A pressurizing member that pressurizes the mixture piece placed in the pressurizing chamber; and a decompression chamber that places the pressurizing chamber in a vacuum atmosphere or a decompressed environment that is decompressed with respect to atmospheric pressure. It is characterized by being.

  In the gas removal device according to claim 3, a mixture piece of the plastic fluid material and the hard filler is put into the pressurizing chamber, and the pressurizing member is used in a vacuum atmosphere or a depressurized environment reduced to atmospheric pressure. The mixture piece is pressurized and kneaded.

  Thereby, the air between the mixture pieces thrown into the pressurizing chamber and the gas contained in the mixture pieces are pushed out while being pressurized and simultaneously sucked out of the pressurizing chamber. Accordingly, the gas is removed from the kneaded product of the kneaded product pieces.

  According to a fourth aspect of the present invention, the pressurizing chamber has a cross-sectional area smaller than a cross-sectional area of the pressurizing chamber in a direction orthogonal to the pressurizing direction, and has fluidity from the pressurizing chamber. A communication part through which the kneaded material passes, having a cross-sectional area larger than the cross-sectional area of the communication part on the side opposite to the pressurizing chamber, and a chamber through which the kneaded material that has passed through the communication part is sent out. It is a feature.

  In the gas removing device according to the fourth aspect, the pressurizing chamber into which the mixture piece of the plastic fluid material and the hard filler is put is provided with a communication portion. The cross-sectional area of the communication portion in the direction orthogonal to the pressurizing direction is smaller than the cross-sectional area of the pressurizing chamber. A chamber having a cross-sectional area larger than the cross-sectional area of the communication portion is provided on the opposite side of the communication portion from the pressurizing chamber. Then, when the mixture piece put into the pressurizing chamber is pressurized by the pressurizing member, the mixture piece is kneaded, passes through the communicating portion, and is sent out to the chamber.

  At this time, the magnitude of the force acting per unit area of the kneaded material passing through the communicating portion is larger than the magnitude of the force acting per unit area of the mixture piece in the pressurizing chamber. For this reason, since the surface area of the kneaded material is increased when passing through the communication path, the gas in the kneaded material escapes from the surface of the kneaded material.

  The invention described in claim 5 is characterized in that the chamber is a mold of a molded product of the required kneaded material.

  In the gas removal apparatus according to the fifth aspect, the chamber is a mold of a molded product required for the kneaded product, and the kneaded product that has passed through the communicating portion is sent out to the mold to obtain a molded product. At this time, when passing through the communication portion, the air between the mixture pieces put into the pressurizing chamber and the gas contained in the mixture pieces are removed from the kneaded product, and thus sent out to the mold. The resulting molded product is unlikely to contain gas.

  In this way, since the kneaded material is directly fed from the communicating portion to the chamber as the mold, the required operation of introducing the kneaded material into the mold of the molded product of the kneaded material is unnecessary, and the manufacturing process is simplified.

  According to a sixth aspect of the present invention, a partition having a plurality of holes formed as the communication portion is provided in a cylinder, and a space formed by the partition and the cylinder is defined as the pressurizing chamber. In addition, a pressure member is provided that pressurizes the charged mixture piece by sliding the inner wall of the pressure chamber.

  In the gas removing device according to claim 6, a partition wall having a plurality of holes is provided in the cylinder, and a pressurizing member slides in a pressurizing chamber formed by the partition wall and the cylinder. It is provided as possible.

  When the mixture piece put into the pressure chamber is pressurized by the sliding of the pressure member, the kneaded material passes through the plurality of holes formed in the partition wall.

  At this time, since the cross-sectional area (total area) in the direction orthogonal to the pressurizing direction of the holes formed in the partition walls is smaller than the cross-sectional area of the pressurizing chamber, when the kneaded material passes through the holes, the pressurizing chamber The air contained in the mixture pieces and the gas contained in the mixture pieces are removed.

  The invention described in claim 7 is characterized in that the hole has a circular shape.

  In the gas removal device according to the seventh aspect, the flow resistance of the kneaded material passing through the hole does not increase by making the hole formed in the partition wall into a circular shape.

  The invention described in claim 8 is characterized in that the hole has an elongated shape.

  In the gas removal device according to the eighth aspect of the invention, by making the holes formed in the partition wall elongated, when the kneaded material passes through the holes, the kneaded material is thinly stretched to further increase the surface area. Thereby, the air between the mixture pieces thrown into the pressurizing chamber and the gas contained in the mixture pieces are easily removed.

  The invention according to claim 9 is a plastic fluid material inserted into a hollow portion formed in a laminating direction of a laminated elastic body formed by alternately laminating a rigid plate having rigidity and an elastic plate having elasticity, and A method of manufacturing a core that is a kneaded mixture of hard filler mixture pieces, the step of introducing the mixture pieces into a pressurizing chamber, and the decompression of the pressurizing chamber under a vacuum atmosphere or with respect to atmospheric pressure. Placing in an environment and pressurizing the mixture piece charged into the pressurizing chamber; and taking out a core formed by kneading the mixture piece from the pressurizing chamber. It is a feature.

  In the core manufacturing method according to claim 9, a pressure member is placed in a vacuum atmosphere or a reduced pressure environment that is depressurized with respect to atmospheric pressure by introducing a mixture piece of a plastic fluid material and a hard filler into a pressure chamber. The core is manufactured by pressing the mixture piece.

  As a result, the air between the mixture pieces put into the pressurizing chamber and the gas contained in the mixture pieces are pushed out while being pressurized and simultaneously sucked out of the pressurizing chamber. The gas is removed.

  The invention according to claim 10 is a plastic flow material inserted into a hollow portion formed in a laminating direction of a laminated elastic body formed by alternately laminating a rigid plate having rigidity and an elastic plate having elasticity. A method of manufacturing a core that is a kneaded mixture of hard filler mixture pieces, the step of introducing the mixture pieces into a pressurizing chamber, and the decompression of the pressurizing chamber under a vacuum atmosphere or with respect to atmospheric pressure. Place under the environment, pressurize the pressurizing chamber, and the mixture piece put into the pressurizing chamber is communicated with the pressurizing chamber from the cross-sectional area of the pressurizing chamber in a direction perpendicular to the pressurizing direction. Passing through a communicating portion having a small cross-sectional area and discharging to a chamber having a cross-sectional area larger than the cross-sectional area of the communicating portion communicated with the communicating portion, and the mixture pieces are kneaded and molded from the chamber. And a step of removing the core.

  In the core manufacturing method according to claim 10, a mixture piece of the plastic fluid material and the hard filler is put into the pressurizing chamber, and placed in a vacuum atmosphere or a reduced pressure environment that is depressurized with respect to atmospheric pressure. The mixture piece is pressurized with a pressure member. Thereby, the mixture piece of the pressurizing chamber passes through the communicating portion and is discharged into the chamber.

  At this time, since the cross-sectional area in the direction orthogonal to the pressurizing direction of the communicating portion is smaller than the cross-sectional area of the pressurizing chamber, than the magnitude of the force acting on the mixture piece in the pressurizing chamber per unit area, The magnitude of the force acting per unit area of the kneaded material (core) passing through the communicating portion is larger. For this reason, since the surface area of the kneaded material is increased when passing through the communication path, the gas in the kneaded material escapes from the surface of the kneaded material.

  Then, when the kneaded material is released from the communicating portion into the chamber, the gas that has escaped from the kneaded material is released into the chamber, and the gas in the kneaded material is removed. Therefore, the core gas is removed.

  The invention described in claim 11 is characterized in that the mixture piece is pressurized with a force of 10 MPa to 200 MPa per unit area.

  In the core manufacturing method according to the eleventh aspect, when the mixture piece is pressed with a force smaller than 10 MPa per unit area, the pressure contained in the kneaded product cannot be sufficiently removed because the applied pressure is insufficient. Further, when the mixture piece is pressed with a force larger than 200 MPa per unit area, the pressure applied to the mixture piece becomes excessive, and the physical properties of the kneaded product change.

  Therefore, by pressing the mixture piece with a force of 10 MPa to 200 MPa per unit area, the gas in the kneaded product can be removed without changing the physical properties of the kneaded product.

  The invention according to claim 12 is characterized in that the plastic flow material has a shear yield stress of 0.1 MPa to 10 MPa.

  In the core manufacturing method according to claim 12, when the shear yield stress of the plastic fluid material is smaller than 0.1 MPa, the flow resistance of the plastic fluid material is small, so that a large damping force cannot be obtained, and the plastic fluid material If the shear yield stress is greater than 10 MPa, the plastic flow material cannot be greatly plastically deformed.

  Therefore, a core having a stable plastic deformation behavior can be obtained by kneading a hard filler into a plastic fluid material having a shear yield stress of 0.1 MPa to 10 MPa.

  The invention according to claim 13 is characterized in that the hard filler is mainly composed of iron.

  In the core manufacturing method according to claim 13, by forming the core with a kneaded material obtained by kneading a mixture of a hard filler mainly composed of iron and a plastic fluidized material, the behavior of plastic deformation of the core is stabilized. .

  The invention according to claim 14 is inserted into a laminated elastic body formed by alternately laminating a rigid plate having rigidity and an elastic plate having elasticity, and a hollow portion formed in the laminating direction of the laminated elastic body. A core manufactured by the core manufacturing method according to any one of claims 9 to 13 is provided.

  In the laminated support body of Claim 14, the core shape | molded with the kneaded material manufactured with the manufacturing method of the core of any one of Claim 9-13 is a rigid board with rigidity, and elasticity. Are inserted into the hollow portion formed in the laminating direction of the laminated elastic body constituted by alternately laminating the elastic plates in a predetermined laminating direction, thereby forming a laminated support.

  As a result, since the core molded from the kneaded product from which gas has been removed is inserted into the hollow portion of the laminated support, the core can obtain sufficient strength, and the laminated support can be stably attenuated. Performance can be demonstrated.

  Since the present invention has the above-described configuration, a molded product with stable performance can be obtained by kneading a mixture piece of a plastic fluid material and a hard filler and removing gas in the kneaded product.

  FIG. 1 shows a laminated support 12 on which a core 30 molded using the manufacturing apparatus 40 according to the first embodiment of the present invention is mounted.

  The laminated support 12 is a laminated elastic material in which a plurality of disk-shaped metal plates 18 and a plurality of disk-shaped rubber plates 20 are alternately laminated in the thickness direction (hereinafter, this lamination direction is referred to as “X direction”). A body 16 is provided.

  Flange plates 14 are fixed to both end surfaces of the laminated elastic body 16 in the X direction. The flange plate 14 includes a flange portion 14F that protrudes to the side of the laminated elastic body 16, and a bolt is inserted into a bolt hole (not shown) formed in the flange portion 14F so that the laminated support body 12 is supported. It is attached to members (for example, building foundations, foundations, grounds, etc.) and supported members (for example, office buildings, hospitals, apartment houses, museums, public halls, schools, government buildings, shrines and temples, bridges, etc.). In the attached state, the supported member is supported by the support member via the laminated support 12.

  The metal plate 18 and the rubber plate 20 constituting the laminated elastic body 16 are firmly bonded to each other by vulcanization adhesion (or by an adhesive), so that they are not inadvertently separated or misaligned. Yes. When the laminated support body 12 receives a horizontal shearing force, the laminated elastic body 16 is also elastically sheared.

  Accordingly, when the supporting member and the supported member are relatively moved (vibrated) in the horizontal direction, the laminated elastic body 16 is elastically sheared and deformed as a whole. Here, as described above, by alternately laminating the metal plates 18 and the rubber plates 20, even when a load acts in the laminating direction, the elastic deformation of the laminated elastic body 16 (that is, compression of the rubber plates 20) occurs. It is suppressed.

  The laminated elastic body 16 further includes a covering material 22 that covers the outer end faces of the metal plate 18 and the rubber plate 20 from the periphery. The coating material 22 prevents rain and light from acting on the metal plate 18 and the rubber plate 20 from the outside, thereby preventing deterioration due to oxygen, ozone, ultraviolet rays, or the like. Further, the covering material 22 has a constant thickness so that there is no variation in its strength.

  The covering material 22 can be formed of the same material as the rubber plate 20. In this case, the rubber plate 20 and the covering material 22 can be formed separately and integrated by vulcanization adhesion or the like in a subsequent process. Alternatively, the covering material 22 and the rubber plate 20 may be bonded with an adhesive or the like.

  An elastic hollow portion 28 that penetrates the laminated elastic body 16 in the X direction is formed at the center of the laminated elastic body 16. The elastic hollow portion 28 is a cylindrical space in the present embodiment, but the shape is not limited to a cylindrical shape.

  A cylindrical core 30 molded from a kneaded material 56 (see FIG. 4) in which a plastic fluid material and a hard filler are kneaded is fitted into the elastic body hollow portion 28.

  A closing plate 24 is disposed at the end of the elastic body hollow portion 28. The closing plate 24 is formed in a disk shape having a larger diameter than the elastic body hollow portion 28 so that the end of the elastic body hollow portion 28 in the X direction can be closed. By fixing the closing plate 24 to the flange plate 14, the elastic body hollow portion 28 can be sealed.

  In the laminated support body 12 of the first embodiment having such a configuration, the laminated elastic body 16 is elastic as shown in FIG. 2 due to the relative movement (vibration) of the support member and the supported member in the horizontal direction. Shears and absorbs energy.

  Here, the manufacturing apparatus 40 (gas removal apparatus) which manufactures the core 30 inserted in the elastic body hollow part 28 is demonstrated.

  As shown in FIG. 3, the manufacturing apparatus 40 includes a vacuum device 50, and a bottomed cylindrical cylinder 42 is provided in the vacuum device 50. In the vacuum device 50, a pressurizing member 44 that is moved up and down by a hydraulic actuator 45 is provided so as to be slidable in the cylinder 42.

  The vacuum device 50 is provided with a vacuum pump 52, and the air in the vacuum device 50 is exhausted by driving the vacuum pump 52, so that the inside of the vacuum device 50 is depressurized to a predetermined pressure.

  Next, the process of manufacturing the core 30 using the manufacturing apparatus 40 having the above configuration will be described.

  As shown in FIG. 4A, a block-like plastic fluid material and hard filler mixture piece 56A is put into a cylinder 42 in a state where the pressure member 44 is not inserted. The mixture piece 56A is formed by kneading a plastic fluid material and a hard filler in advance using a kneader.

  Next, as shown in FIG. 4B, the hydraulic actuator 45 is driven, the pressurizing member 44 is lowered and inserted into the cylinder 42, the vacuum pump 52 is driven, and the inside of the vacuum device 50 is unit area. The pressure is reduced to 0.01 Pa to 0.1 Pa per unit.

  Then, as shown in FIG. 4C, the hydraulic actuator 45 is driven to further lower the pressurizing member 44, and the mixture piece 56 </ b> A put into the cylinder 42 is applied with a force of 10 MPa to 200 MPa per unit area. Pressurize. Thereby, the mixture piece 56A is kneaded and the kneaded material 56 is formed.

  At this time, the air between the plastic flow material and the hard filler mixture piece 56 </ b> A charged into the cylinder 42 and the gas contained in the mixture piece 56 </ b> A are pressurized and pushed out by the pressure member 44. The pushed air is sucked out of the cylinder 42 through a minute gap between the cylinder 42 and the pressure member 44.

  Therefore, the gas is removed from the kneaded material 56 of the mixture piece 56A of the plastic fluid material and the hard filler.

  In addition, when the mixture piece 56A is pressurized with a force smaller than 10 MPa per unit area, the pressure contained in the mixture piece 56A is insufficient, so that the gas contained in the kneaded product 56 is insufficiently removed. Further, when the mixture piece 56A is pressurized with a force larger than 200 MPa per unit area, the pressure applied to the mixture piece 56 becomes excessive, and the physical properties of the kneaded product 56 change. Therefore, by pressing the mixture piece 56A with a force of 10 MPa to 200 MPa per unit area, the gas in the kneaded product 56 can be removed without changing the physical properties of the kneaded product 56.

  Moreover, the temperature at the time of pressurizing 56 A of mixture pieces in the cylinder 42 shall be 40 to 120 degreeC. If the temperature is lower than 40 ° C., the fluidity of the kneaded product 56 cannot be sufficiently obtained. If the temperature is higher than 120 ° C., the physical property of the kneaded product 56 changes.

  Then, the pressure member 44 is removed from the cylinder 42, the cylinder 42 is taken out of the vacuum device 50, and the kneaded material 56 is taken out from the cylinder 42. The taken-out kneaded material 56 is put into a molding die 58 for molding the core 30 to mold the core 30 (see FIG. 1).

  In addition, as a plastic fluid material thrown into the cylinder 42, although an unvulcanized rubber, a thermoplastic elastomer, etc. whose shear yield stress is 0.1MPa-10MPa can be mentioned, for example, it is not limited to these. Examples of the main component (polymer) of the unvulcanized rubber include natural rubber (NR), styrene / butadiene rubber (SBR), styrene / propylene rubber (EPM, EPDM), and silicone rubber (Q). Further, a compounding agent such as carbon black, calcium carbonate, oil or resin may be blended with unvulcanized rubber or thermoplastic elastomer.

  Moreover, the hard filler should just be a material which has the hardness which can be considered to be a rigid body with respect to a plastic fluid material. For example, metals, ceramics, engineering plastics, and the like can be applied, but are not limited thereto. Specific examples of the metal include pure iron, and powder mainly composed of iron such as carbon steel and stainless steel.

  If the shear yield stress of the plastic fluid material is less than 0.1 MPa, the flow resistance force of the plastic fluid material is small, so that a large damping force cannot be obtained, and the shear yield stress of the plastic fluid material is greater than 10 MPa. The plastic flow material cannot be greatly plastically deformed. Therefore, a kneaded material 56 having a stable plastic deformation behavior is obtained by kneading a hard filler into a plastic fluid material having a shear yield stress of 0.1 MPa to 10 MPa.

  In the present embodiment, when the mixture piece 56A is put into the cylinder 42 installed in the vacuum device 50 and the mixture piece 56A is pressurized by the pressurizing member 44, the inside of the vacuum device 50 is depressurized, and the cylinder 42 In the above description, the air between the mixture pieces 56A and the gas contained in the mixture pieces 56A are sucked from the gap between the pressure member 44 and the pressure member 44. However, the vacuum device 50 is not necessarily used. For example, when a suction device is connected to the cylinder 42 and the mixture piece 56A is pressurized, the suction device is driven to suck the air in the pressure chamber formed by the bottom and side walls of the cylinder 42 and the pressure member 44. . Thereby, since the air between the mixture pieces 56A is sucked out of the cylinder 42, the gas of the kneaded material 56 is removed.

  Next, a manufacturing apparatus 60 according to the second embodiment of the present invention will be described. In addition, the description about the part similar to 1st Embodiment is omitted.

  As shown in FIG. 5, the manufacturing apparatus 60 includes a vacuum device 50, and a cylindrical cylinder 62 having both ends in the longitudinal direction opened is provided in the vacuum device 50. A partition 66 having a plurality of circular through-holes 64 (see FIG. 7A) is provided in the vicinity of the opening 62A on one side (the lower side of the figure) of the cylinder 62.

  Further, in the vacuum device 50, a pressure member 64 that is lifted and lowered by the hydraulic actuator 45 is slidably provided in the cylinder 62 at the other opening 62B of the cylinder 62 (upper side in the drawing). Thus, a pressure chamber 68 into which the kneaded material 56 of the plastic fluid material and the hard filler is charged is formed by the inner wall of the cylinder 62, the partition wall 66, and the pressure member 64.

  A molding die 70 for molding the core 30 is disposed below the cylinder 62. The kneaded material 56 (see FIG. 6) that has passed through the through-hole 64 formed in the partition wall 66 is filled in the mold 70.

  Next, the process of manufacturing the core 30 using the manufacturing apparatus 60 having the above configuration will be described.

  First, as shown in FIG. 6A, a block-like plastic fluid material and hard filler mixture piece 56A is placed in a cylinder 62 (in the pressurizing chamber 68) in a state where the pressurizing member 64 is not inserted. throw into.

  Next, as shown in FIG. 6B, the hydraulic actuator 45 is driven, the pressurizing member 64 is lowered and inserted into the cylinder 62, and the vacuum pump 52 is driven to depressurize the inside of the vacuum device 50.

  Then, as shown in FIG. 6 (C), the hydraulic actuator 45 is driven to further lower the pressure member 64 and apply the mixture piece 56A in the pressure chamber 68 with a force of 10 MPa to 200 MPa per unit area. Press. Moreover, the temperature at the time of pressurizing the mixture piece 56A in the cylinder 62 shall be 40 to 120 degreeC.

  As a result, the mixture piece 56 </ b> A flows and passes through the through-hole 64 formed in the partition wall 66 and is filled in the mold 70. At this time, since the cross-sectional area of the through hole 64 provided in the partition wall 66 in the direction orthogonal to the pressurizing direction is smaller than the cross-sectional area of the pressurizing chamber 68, the mixture piece 56A in the pressurizing chamber 68 is The magnitude of the force acting per unit area of the kneaded material 56 passing through the through hole 64 is greater than the magnitude of the force acting per unit area. That is, when the kneaded material 56 passes through the through-hole 64, a pressure larger than the pressure applied in the pressurizing chamber 68 is applied to the kneaded material 56. Therefore, the gas contained in the kneaded material 56 (the mixture piece 56A In between and gas contained in the mixture piece 56A).

  Further, since the surface area of the kneaded material 56 is increased when it passes through the through hole 64, the gas in the kneaded material 56 escapes from the surface of the kneaded material 56.

  When the kneaded material 56 that has passed through the through hole 64 is filled in the mold 70, the gas that has escaped from the kneaded material 56 is sucked from between the cylinder 62 and the pressure member 64. Accordingly, the gas in the kneaded material 56 of the plastic fluid material and the hard filler is removed.

  In this embodiment, as shown in FIG. 7A, the plurality of through holes 64 formed in the partition 66 have been described as circular, but as shown in FIG. The formed through hole 74 may be a long hole. Further, as shown in FIG. 7C, a partition wall 76 in which a substantially rectangular through hole 78 is formed may be used. At this time, the corners of the through-hole 78 have an R shape or a C surface 78A, so that the flow resistance of the kneaded product 56 does not increase when the kneaded product 56 passes through the through-hole 78.

  Thus, by making the through-hole formed in the partition 66 into an elongated shape such as a long hole or a substantially rectangular shape, the kneaded material 56 passing through the through-hole is stretched thinly and the surface area is further increased. Thereby, the gas contained in the kneaded material 56 is easily removed.

  Further, in this embodiment, the molding die 70 for molding the core 30 is disposed below the cylinder 62, but a receiving portion that receives the kneaded material 56 that has passed through the through hole 64 of the partition wall 66 is provided below the cylinder 62. The kneaded material 56 received by the receiving portion may be put into a mold.

  Further, the kneaded material 56 received by the receiving portion is again put into the cylinder 62 (pressurizing chamber 68) and pressurized by the pressurizing member 64, and the kneaded material 56 is again formed in the through-hole 64 formed in the partition wall 66. , The air bubbles remaining in the kneaded product 56 are removed at this point.

It is sectional drawing which shows the laminated support body of embodiment of this invention before a deformation | transformation. It is sectional drawing which shows the laminated support body of embodiment of this invention after deformation | transformation. It is sectional drawing which shows the manufacturing apparatus which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the manufacturing apparatus which concerns on the 1st Embodiment of this invention, (A)-(D) is a figure which shows a manufacturing process. It is sectional drawing which shows the manufacturing apparatus which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows the manufacturing apparatus which concerns on the 2nd Embodiment of this invention, (A)-(D) is a figure which shows a manufacturing process. It is a front view which shows the partition mounted in the manufacturing apparatus which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows the conventional manufacturing apparatus.

Explanation of symbols

12 Laminated Support 28 Elastic Hollow Part (Hollow Part)
30 core 40 production equipment (gas removal equipment)
42 cylinder (pressure chamber)
44 Pressurizing member 50 Vacuum device (pressure reducing means)
56 Kneaded material 56A Mixture piece 60 Production device (gas removal device)
62 cylinder (pressure chamber)
64 Pressure member 64 Through hole (hole)
66 Bulkhead (communication part)
68 Pressurizing chamber 70 Mold (mold)

Claims (14)

A gas removal method of kneading a mixture piece of a plastic fluid material and a hard filler to remove gas in the kneaded product,
Introducing the mixture piece into the pressure chamber;
Placing the pressurizing chamber in a vacuum atmosphere or a reduced pressure environment depressurized with respect to atmospheric pressure, and pressurizing the mixture piece charged in the pressurizing chamber;
The gas removal method characterized by having.   The mixture piece put into the pressurizing chamber is passed through a communicating portion having a cross-sectional area smaller than a cross-sectional area of the pressurizing chamber communicated with the pressurizing chamber and perpendicular to the pressurizing direction. The gas removal method according to claim 1, wherein the gas is discharged to a chamber communicated with the section and having a cross-sectional area larger than the cross-sectional area of the communication section. A gas removal method of kneading a mixture piece of a plastic fluid material and a hard filler to remove gas in the kneaded product,
A pressure chamber into which the mixture piece is charged;
A pressurizing member that pressurizes the mixture piece placed in the pressurizing chamber;
A decompression chamber in which the pressurization chamber is placed in a vacuum atmosphere or a decompressed environment decompressed with respect to atmospheric pressure;
A gas removal device comprising:   The pressurizing chamber has a communication section having a cross-sectional area smaller than the cross-sectional area of the pressurizing chamber in a direction orthogonal to the pressurizing direction, and through which the kneaded material having fluidity passes from the pressurizing chamber. The cross-sectional area larger than the cross-sectional area of the communicating part is provided on the side opposite to the pressurizing chamber, and a chamber through which the kneaded material that has passed through the communicating part is sent out is provided. Gas removal device.   5. The gas removal device according to claim 4, wherein the chamber is a mold of a required kneaded product.   A partition wall in which a plurality of holes are formed as the communication portion is provided in a cylinder, and a space formed by the partition wall and the cylinder is used as the pressurizing chamber. The gas removing device according to claim 5, further comprising a pressurizing member that slides and pressurizes the inner wall of the pressurizing chamber.   The gas removal device according to claim 6, wherein the hole has a circular shape.   The gas removal device according to claim 6, wherein the hole has an elongated shape. A kneaded product of a mixture piece of a plastic fluid material and a hard filler inserted in a hollow portion formed in a laminating direction of a laminated elastic body formed by alternately laminating a rigid plate having rigidity and an elastic plate having elasticity A method of manufacturing a core,
Introducing the mixture piece into the pressure chamber;
Placing the pressurizing chamber in a vacuum atmosphere or a reduced pressure environment depressurized with respect to atmospheric pressure, and pressurizing the mixture piece charged in the pressurizing chamber;
Removing the core formed by kneading the mixture piece from the pressure chamber;
A method for manufacturing a core, comprising: A kneaded product of a mixture piece of a plastic fluid material and a hard filler inserted in a hollow portion formed in a laminating direction of a laminated elastic body formed by alternately laminating a rigid plate having rigidity and an elastic plate having elasticity A method of manufacturing a core,
Introducing the mixture piece into the pressure chamber;
The pressurizing chamber is placed in a vacuum atmosphere or a decompressed environment reduced to atmospheric pressure, the pressurizing chamber is pressurized, and the mixture piece put into the pressurizing chamber is put into the pressurizing chamber. A chamber having a cross-sectional area larger than the cross-sectional area of the communication portion that is connected to the communication portion and passes through the communication portion having a cross-sectional area smaller than the cross-sectional area of the pressurization chamber in a direction orthogonal to the pressurization direction. A step of releasing to
Removing the core formed by kneading the mixture piece from the chamber;
A method for manufacturing a core, comprising:   The method of manufacturing a core according to claim 9 or 10, wherein the mixture piece is pressed with a force of 10 MPa to 200 MPa per unit area.   The method for manufacturing a core according to any one of claims 9 to 11, wherein the plastic flow material has a shear yield stress of 0.1 MPa to 10 MPa.   The said hard filler has iron as a main component, The manufacturing method of the core of any one of Claims 9-12 characterized by the above-mentioned. A laminated elastic body configured by alternately laminating a rigid plate having rigidity and an elastic plate having elasticity; and
The core manufactured by the core manufacturing method according to any one of claims 9 to 13, which is inserted into a hollow portion formed in the stacking direction of the stacked elastic body,
A laminated support characterized in that it has a structure.

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