JP2015112827A - Mold tool for press molding, and press molding method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold tool for press molding a composite material, allowing reinforcement fiber to be reliably impregnated with a resin material for molding of the composite material into a desired shape; and a press molding method using the same.SOLUTION: The mold tool includes: a movable mold fixed to a slide movable upward and downward with a pressurizing axis; a stationary mold; a first insert disposed in the movable mold, having heating means; and a second insert disposed in the stationary mold so as to be joined to the first insert through a molding material, having heating means. The mold tool further includes an elastic body which separates the first insert or the second insert from the movable mold or the stationary mold, to be pushed and compressed by the driven pressurizing axis. The driven pressurizing axis allows the first insert to contact the second insert, the first insert to contact the movable mold, and the second insert to contact the stationary mold.

Description

  The present invention relates to a press molding die for molding a composite material including a resin processing material such as a thermosetting resin or a thermoplastic resin into a predetermined shape, and a press molding method using the same.

  As the press mold, one disclosed in Patent Document 1 is known. This press mold is composed of a pair of molds consisting of a male mold and a female mold, and reinforcing fiber such as carbon fiber woven fabric, glass fiber woven fabric, aramid fiber, non-woven fabric and unidirectional reinforcing material as a molding material. A composite material containing a thermoplastic resin is used. In the pressing of the composite material, first, the male mold and the female mold are heated, and the molding material is heated on the female mold to soften the thermoplastic resin.

  Next, the heated molding material is pressurized by the male mold and the female mold, and the shapes of the male mold and the female mold are transferred to the molding material to mold the molding material into a predetermined shape. Here, in the conventional press-molding die including the press-molding die of Patent Document 1, it is usual to perform pressurization with the pair of dies only once. In the press mold of Patent Document 1, a composite material containing a thermoplastic resin in a reinforcing fiber such as a carbon fiber fabric is used as a molding material. However, a composite material containing a thermosetting resin as a resin is used. Are also commonly used.

JP 05-269552 A

  As a press working apparatus using the conventional press mold configured as described above, a so-called hydraulic press machine using a hydraulic cylinder as a pressurizing means for pressurizing a pair of molds, or a rotary motion of an electric motor is used. 2. Description of the Related Art There is known a mechanical press machine that converts a linear motion by an eccentric mechanism such as a crank mechanism and moves up and down a slide on which a male or female die is fixed. And in the said hydraulic press machine, although sufficient pressurization force is provided for shape | molding a shaping | molding raw material in a predetermined shape, since the pressurization force is high, the minimum pressure is also high. For this reason, when a composite material containing a thermoplastic resin is used as a molding material, there is a problem that the composite material is cut or out of shape due to the pressure applied by the hydraulic cylinder.

  In the case of a composite material including a thermosetting resin, only the surface layer of the thermosetting resin is cured by heating the mold, while heat is not transmitted to the inside of the thermosetting resin. The phenomenon was seen. For this reason, in the pressurization process, there existed a subject that the thermosetting resin which was not hardened by pressurization of a male type and a female type would exude from a composite material. As a result, there has been a problem that, when microscopically observed, a molded product in which the reinforcing fiber and the resin material are not appropriately bonded or a molded product in which the required shape is not secured is produced.

  On the other hand, in the case of a mechanical press, pressure is applied to the pair of molds when the slide reaches bottom dead center. For this reason, it is difficult to easily adjust the pressure on the mold, and when the composite material is used as a molding material, there is a molded product or a required shape in which the reinforcing fiber and the resin material are not appropriately combined. In some cases, unsecured molded products are produced.

  The present invention has been made in view of such problems, and its purpose is to use a composite material in which a reinforcing material fiber such as a carbon fiber fabric and a resin material are combined as a molding material. An object of the present invention is to provide a press mold capable of reliably impregnating the reinforcing material fiber with a resin material, and to mold it into a required shape, and a press molding method using the same.

  That is, the present invention provides a movable mold fixed to a slide movable up and down by a pressure shaft, a fixed mold fixed to a fixed portion, a first entering piece provided in the movable mold, A first piece and a second piece, the first piece and the second piece being connected to the first piece and the second piece. Heating means for heating the piece is provided.

  The first insertion piece or the second insertion piece is separated from the movable mold or the fixed die between at least one of the movable die and the first insertion piece or between the fixed die and the second insertion piece. And an elastic body that is pressed and contracted by driving the pressure shaft, and by driving the pressure shaft, the first entering piece and the second entering piece, the first entering piece and the movable mold, and the second It is characterized in that the entering piece and the fixed mold come into contact with each other.

  According to the present invention, the elastic body is provided between at least one of the movable mold and the first entering piece or between the fixed mold and the second entering piece, and the elastic body is compressed by the pressing shaft. It has become. Further, the first entering piece and the second entering piece have the heating means. For this reason, the said composite material can be pressurized and heated prior to the pressurization by a pressurizing shaft. As a result, the reinforcing material fibers constituting the composite material can be reliably impregnated with the resin material, and the composite material can be reliably molded into the required shape.

It is a front view which shows 1st embodiment of the press die which applied this invention. It is a schematic diagram which shows arrangement | positioning of the elastic body with which the press molding die of FIG. 1 is provided. It is a front view which shows the operation state of the press molding die of FIG. It is a front view which shows the 1st modification of the press molding die of FIG. It is a front view which shows the 2nd modification of the press molding die of FIG.

  FIG. 1 is a front view showing an example of an embodiment of a press mold to which the present invention is applied. The press molding die 1 includes a slide 100 that can be moved up and down by a pressure shaft (not shown) such as a hydraulic cylinder, and a fixed portion 101 that applies pressure to the molding material between the slide 100. Are used in a press working apparatus. The press-molding die 1 includes a movable die 2 that is fixed to the slide 100 and moves up and down together with the slide 100, a fixed die 3 that is fixed to the fixed portion 101, and the movable die 2 and the fixed die. And a die-containing piece 4 disposed between the die 3 and the die 3.

  The movable mold 2 is formed in a planar quadrangular shape and is fixed to the slide 100 by a fixing bolt (not shown). The movable mold 2 is formed with cylindrical guide shafts 21 at its four corners. The guide shaft 21 engages with the fixed mold 3 to connect the movable mold 2 and the fixed mold 3 to each other. It has a function to guide relative movement. Furthermore, four cooling channels 22 for cooling the movable mold 2 are formed in the movable mold 2 so as to penetrate therethrough. A cooling means such as a condenser is connected to the cooling flow path 22, and a cooling medium such as water flows into the cooling flow path 22 by the cooling means.

  Furthermore, the movable mold 2 is provided with a holding plate 23 at a position facing the mold-containing piece 4. The holding plate 23 is formed in a planar square shape that is slightly smaller than the movable mold 2. As with the movable mold 2, cylindrical holding shafts 24 are erected on the four corners of the holding plate 23. The guide shaft 24 is used for guiding the fixed mold 3 that moves relative to the holding plate 23.

  An elastic body 25 made of a coil spring is fixed to the holding plate 23. This elastic body 25 always urges the die-containing piece 4, and in an initial state of the press working apparatus in which the pressure shaft is not driven, it is between the movable die 2 and the die-containing piece 4. A gap is formed. FIG. 2 is a schematic view showing an arrangement configuration of the elastic body 25. As can be seen from FIG. 2, a total of eight elastic bodies 25 are provided for the holding plate 23. The urging force and arrangement of each elastic body 25 may be appropriately changed according to the shape molded by the die-containing piece 4. For example, the urging forces of the four elastic bodies 25 a arranged at the center of the holding plate 23 are A design in which the force is set to be smaller than the urging force of the four elastic bodies 25b arranged outside the holding plate 23 is conceivable.

  Further, four cooling channels 26 are formed through the holding plate 23. A cooling means such as a condenser is connected to the cooling flow path 26, and a cooling medium such as water is allowed to flow into the cooling flow path 26 by the cooling means. The cooling flow path 26 is provided for cooling the mold-containing piece 4 that has been heated, and further for cooling the molding material. In the press molding die according to the present embodiment, four cooling channels 22 provided in the movable mold 2 and four cooling channels 26 provided in the holding plate 23 are formed. The number of the flow paths 22 and 26 may be appropriately changed.

  On the other hand, the fixed mold 3 is formed in a planar square shape, and is fixed to the fixed portion 101 by a fixing bolt (not shown). Guide holes 31 having a circular cross section are formed at the four corners of the fixed mold 3, and the guide shafts 21 of the movable mold 2 are engaged with the guide holes 31. The fixed mold 3 is formed with four cooling channels 32 for cooling the fixed mold 3. The cooling flow path 32 is connected to a cooling means such as a condenser, and a cooling medium such as water flows into the cooling flow path 32 by the cooling means.

  Furthermore, a holding plate 33 is disposed on the surface of the fixed mold 3 facing the mold-containing piece 4. The holding plate 33 is formed in a planar rectangular shape that is slightly smaller than the fixed mold 3. Guide holes 34 having a circular cross section are formed at four corners of the holding plate 33. A guide shaft 24 formed in the movable mold 2 is engaged with the guide hole 34.

  An elastic body 35 is erected on the holding plate 33 toward the die-containing piece 4. The elastic bodies 35 are formed of coil springs, and a total of eight elastic bodies 35 are provided for the holding plate 33 in the same manner as the elastic bodies 25. Regarding the elastic body 35, the urging force and arrangement of each elastic body 35 may be appropriately changed according to the molding shape. These elastic bodies 35 always urge the die-containing piece 4, and in an initial state of the press working apparatus in which the pressure shaft is not driven, the fixed die 3 and the die-containing piece 4 A gap is formed between them.

  Further, the holding plate 33 is formed with a cooling channel 36 for cooling the die-containing piece 4 in the same manner as the holding plate 23. The cooling flow path 36 is connected to a cooling means such as a condenser, and a cooling medium such as water flows into the cooling flow path 36 by the cooling means. Note that a total of eight cooling channels 32 and 36 are formed in the fixed mold 3, but the number of the cooling channels 32 and 36 may be changed as appropriate.

  Next, the die-containing piece 4 will be described. The die-containing piece 4 includes a first containing piece 5 that faces the movable die 2 with a gap and a second entering piece 6 that faces the fixed mold 3 with a gap. . An elastic body 25 fixed to the holding plate 23 is brought into contact with the first entering piece 5 and is opposed to the holding plate 23 through a gap. And this 1st entering piece 5 is formed in planar square shape, and the fixing hole 51 is formed in the four corners. A guide shaft 24 formed on the holding plate 23 is inserted into the fixing hole 51, whereby the position of the first entering piece 5 with respect to the holding plate 23 is fixed. Yes.

  The first entering piece 5 is formed with a transfer molding portion 52 for shaping a molding material, and the transfer molding portion 52 is formed in a concave shape. Further, the first entering piece 5 includes four electric heaters 53 as heating means for heating the first entering piece 5. The electric heater 53 is embedded in the vicinity of the transfer molding part 52 so that the heat of the electric heater 53 is easily transmitted to the transfer molding part 52. The electric heater 53 is connected to a controller (not shown) that controls the temperature. In the press molding die according to this embodiment, four electric heaters 53 are built in the first entering piece 5, but the number of electric heaters 53 may be changed as appropriate.

  On the other hand, the second entering piece 6 is formed in a planar quadrangular shape and is formed to have approximately the same size as the first entering piece 5. The second entering piece 6 is formed with a convex transfer molding portion 61 corresponding to the transfer molding portion 52 of the first entering piece 5, and the second entering piece 6 and the first entering piece 5 are mutually connected. In the abutted state, no gap is formed between the transfer molding portion 52 and the transfer molding portion 61. A molding material can be disposed between the transfer molding portion 61 and the transfer molding portion 52 formed as described above. Finally, the molding material follows the transfer molding portions 52 and 61. It is designed to be molded into different shapes. Further, through holes 62 corresponding to the fixing holes 51 of the first entering piece 5 are formed in the second entering piece 6 at four corners. The guide shaft 24 is inserted into each through hole 62. In the press mold according to this embodiment, the transfer molding portion 52 is formed in a concave shape and the transfer molding portion 61 is formed in a convex shape. The shape of the transfer molding portions 52 and 61 is required for a molded product. It is appropriately changed according to the shape to be made.

  Further, the second entering piece 6 includes four electric heaters 63 as heating means for heating the second entering piece 6. The electric heater 63 is embedded in the vicinity of the transfer molding unit 61, and heat of the electric heater 63 is easily transmitted to the transfer molding unit 61. The electric heater 63 is connected to a controller that performs temperature control. In the press mold according to the present embodiment, four electric heaters 63 are built in the second entering piece 6, but the number of electric heaters 63 may be changed as appropriate.

  The second entering piece 6 configured in this way is assembled so as to be movable relative to the holding plate 33 by a guide mechanism. Further, an elastic body 35 fixed to the holding plate 33 is brought into contact with the second entering piece 6 and is opposed to the holding plate 33 through a gap. In order to make it easier to grasp the configuration and function of the elastic body 35, a guide mechanism provided between the second entering piece 6 and the holding plate 33 is omitted in FIG.

  In the press mold according to the present embodiment formed as described above, a plurality of temperature sensors (not shown) are incorporated in each part of the movable mold 2, the fixed mold 3 and the mold-containing piece 4. The temperature change of each member can be accurately grasped. And according to the measured value of this temperature sensor, each electric heater 53,63 incorporated in the die-containing piece 4 and each cooling flow path 22,26,32,36 formed in each mold 2,3 are provided. By operating, the temperature of the entire press mold can be adjusted.

  Next, a press molding method using a press molding die having the above configuration will be described. Examples of the molding material used in the present invention include a composite material obtained by combining a reinforcing material fiber such as a carbon fiber fabric and a resin material such as a thermoplastic resin or a thermosetting resin. First, the electric heaters 53 and 63 are energized to heat the first entering piece 5 and the second entering piece 6. Thereafter, a molding material that is a composite material is placed on the transfer molding portion 52 of the first entering piece 5, and then the slide 100, the movable mold 2 and the first entering piece 5 are driven by driving a pressure shaft (not shown). Is moved in the direction of arrow A.

  As a result, the guide shaft 24 formed on the holding plate 23 is inserted into the through hole 62 formed in the second entering piece 6 so that the first entering piece 5 and the second entering piece 6 are joined. . At this time, the molding material is sandwiched between the transfer molding part 52 of the first entering piece 5 and the transfer molding part 61 of the second entering piece 6. When the first entering piece 5 and the second entering piece 6 are joined in this manner, the elastic bodies 25 and 34 are compressed by the pressure of the pressing shaft. Thereby, each entering piece 5 and 6 is pressurized, pressure is applied to the molding material, heat of each entering piece 5 and 6 is transmitted to the molding material, and this molding material is heated.

  As a result, the resin material contained in the molding material is softened and impregnated into the reinforcing material fiber, and the molding material is molded into a shape following the transfer molding parts 52 and 61. At this time, a gap is formed between the first entering piece 5 and the movable mold 2 and between the second entering piece 6 and the fixed mold 3, and the pressure acting on the molding material is the elastic body 25. , 35 is mostly due to the urging force of 35. For this reason, this molding material is only lightly deformed. In the following description, the molding process so far is referred to as a “pre-pressurization process” for convenience.

  Thereafter, when the pressure F of the pressure shaft is further applied and the slide 100 is brought close to the fixed portion 101, the elastic bodies 25 and 35 are further compressed. As shown in FIG. 3, the movable mold 2, the first entering piece 5, the fixed mold 3 and the second entering piece 6 are joined, and the movable mold 2, the first entering piece 5, the second entering Clearances between the members of the piece 6 and the fixed mold 3 are eliminated. As a result, the pressure F of the pressure shaft directly acts on the molding material, and the molding material is molded into a shape following the transfer molding parts 52 and 61. In the following description, for the sake of convenience, the step of causing the pressure of the pressure shaft to directly act on the molding material is referred to as “main pressure step”.

  After this main pressurizing step, the heat of the die-containing piece 4 is converted into heat capacity by flowing a cooling medium into the cooling passages 22, 26, 32, 36 provided in the movable mold 2 and the fixed mold 3. Is transmitted to the holding plates 23 and 33 having a large heat capacity, and further transmitted to the molds 2 and 3 having a large heat capacity (hereinafter referred to as “cooling process”). By this cooling step, cooling of the molding material arranged between the first entering piece 5 and the second entering piece 6 is promoted, and finally the forming of the forming material is completed. Here, from the viewpoint of preventing the warping of the molded product, even during the cooling process, the temperature distribution of the mold is taken into account by the temperature sensor, and the die-containing piece 4 is appropriately passed through the electric heater. It does not matter even if it is heated.

  Finally, when the pressurization by the pressurizing shaft is stopped and the slide 100 is separated from the fixed portion 101, a gap is formed between the first entering piece 5 and the second entering piece 6. Further, the compressed elastic bodies 25 and 35 are pulled back, and a gap is formed between the movable mold 2 and the first entering piece 5 and between the fixed mold 3 and the second entering piece 6. Thereby, a molded product can be taken out from between the first entering piece 5 and the second entering piece 6. Further, in this state, the molds 2 and 3 including the cooling flow paths 22, 26, 32 and 36 are separated from the entering pieces 5 and 6 including the electric heaters 53 and 63. The piece 5 and the second containing piece 6 can be heated to raise the temperature of the die containing piece 4. In the following description, for the sake of convenience, the step of reheating the die-containing piece 4 is referred to as “temperature raising step”.

  According to the press molding die according to the present embodiment configured as described above, the configuration of the elastic bodies 25 and 34 realizes a pre-pressurization step prior to the main pressurization step using the pressurizing shaft. It is possible. For this reason, when a composite material containing, for example, a resin material is used as the molding material, the reinforcing material fibers can be reliably impregnated with the resin material. As a result, regardless of the type of press molding device such as a hydraulic press or mechanical press, the composite material can be molded into a molded product having the required shape by applying it to a wide variety of press molding devices. .

  Further, according to the press molding die according to the present embodiment, due to the configuration of the elastic bodies 25 and 34, the first entering piece 5 and the second entering piece 5 are opened simultaneously with the mold opening of the first entering piece 5 and the second entering piece 6. The double piece 6 can be heated. For this reason, it is possible to shorten the molding cycle of press molding, which is suitable for mass production of molded products.

  Further, as a method for press-molding the composite material, a method in which a plurality of composite materials are laminated and heated and then the laminated composite material is pressurized is generally performed. Even with such a molding method, if a press molding die to which the present invention is applied is used, the resin material of each composite material can be deformed in the pre-pressurization step, and thus each composite material can be securely connected. Can be combined.

  In the press mold according to the present embodiment, elastic bodies 25 and 35 are provided between the holding plate 23 and the first entering piece 5 and between the holding plate 33 and the second entering piece 6, respectively. However, if it is possible to realize the pre-pressurization step, the elastic body is between the holding plate 23 and the first entering piece 5 or between the holding plate 33 and the second entering piece 6. It suffices to be provided on at least one of them. In the press molding die according to the present embodiment, the elastic bodies 25 and 35 are constituted by coil springs, but the first entering piece 5 and the second entering piece 6 are urged to provide the first entering piece. Any structure other than the coil spring may be used as long as a gap is formed between the movable mold 2 and the movable mold 2 and between the second entering piece 6 and the fixed mold 3.

  Furthermore, in the press mold according to the present embodiment, only the heating means is provided in the die-containing piece 4. From the viewpoint of facilitating temperature adjustment of the die-containing piece 4, As with the movable mold 2 and the fixed mold 3, it is preferable to provide a cooling channel for the mold-containing piece 4.

  Next, a first modification of the press mold shown in FIG. 1 will be described with reference to FIG. 4, in order to clarify the difference from the press-molding die shown in FIG. 1, only the different configuration and the configuration related thereto are denoted by reference numerals.

  In this modification, the holding plates 23 and 33 are fixed to the movable mold 2 and the fixed mold 3 via the hydraulic cylinder 7. With the hydraulic cylinders 7, the holding plates 23 and 33 are provided so as to be movable back and forth in the direction of the arrow B with respect to the movable mold 2 or the fixed mold 3. The pressurizing force of each hydraulic cylinder 7 is set smaller than the pressurizing force of the pressurizing shaft. Here, as described above, the first entering piece 5 is assembled to the holding plate 23 via the guide shaft 24, while the second entering piece 6 is assembled to the holding plate 33 via a guide mechanism (not shown). It is. For this reason, in the present modification, the first entering piece 5 and the second entering piece 6 can also advance and retreat in the arrow B direction by the hydraulic cylinder 7. That is, the hydraulic cylinder 7 corresponds to the pressure adjusting means of the present invention.

  According to the press mold of this embodiment formed as described above, it is possible to adjust the degree of expansion and contraction of the elastic bodies 25 and 35 only by controlling each hydraulic cylinder 7. In other words, the hydraulic cylinder 7 can adjust the pressure applied to the die-containing piece 4 in the pre-pressurizing step. Therefore, in the press mold according to the present embodiment, it is possible to realize the pre-pressurization step only by driving the hydraulic cylinder 7 regardless of the drive of the pressurizing shaft. As compared with the press-molding mold shown in FIG. 1 in which the urging force of the elastic bodies 25 and 35 is adjusted by driving the pressure shaft with a large applied pressure, the pressure adjustment with respect to the die-containing piece 4 is facilitated. In this modification, the hydraulic cylinder 7 is fixed to both the holding plate 23 and the holding plate 33. However, if the hydraulic cylinder 7 is provided on at least one of the holding plate 23 and the holding plate 33, good.

  From the viewpoint of facilitating the pressure adjustment in the pre-pressurization step as described above, the modification shown in FIG. 5 is also conceivable. In the modification shown in FIG. 4, the hydraulic cylinder 7 is fixed to the holding plates 23 and 33, whereas in the modification shown in FIG. 5, the hydraulic cylinder 7 includes the first entry piece 5 and the second entry piece. 6 is directly fixed. 5, in order to clarify the difference from the press mold shown in FIG. 1, only the different configuration and the configuration related thereto are denoted by reference numerals.

  According to such a configuration, it is possible to perform pressure adjustment directly on the die-containing piece 4 by controlling the hydraulic cylinder 7. In the case of such a configuration, in order to facilitate the control of the hydraulic cylinder 7, a pressure sensor is provided between the first entering piece 5 and the second entering piece 6, and according to the measured value of the pressure sensor. It is conceivable to drive the hydraulic cylinder 7. Further, in the present modification, each of the entering pieces 5 and 6 can be moved up and down by the hydraulic cylinder 7, so that each holding plate 23 and 33 and each of the entering pieces 5 and 6 as in the embodiment shown in FIG. It is not necessary to provide the elastic bodies 25 and 35 between the two.

  In the modification shown in FIGS. 4 and 5, a hydraulic cylinder is used as the pressure adjusting means. However, if the first entering piece 5 and the second containing piece 6 can be moved up and down, the hydraulic cylinder is used. For example, an air cylinder or a servo motor may be used.

  Here, in the press molding die to which the present invention described above with reference to FIGS. 1 to 5 is applied, the transfer molding portion 52 and the transfer molding are in a state where the second entering piece 6 and the first entering piece 5 are in contact with each other. A gap is not formed between the portion 61 and the portion 61. As a result, when the molding material is the composite material, the reinforcing material fibers can be appropriately impregnated with the resin material. On the other hand, when the thickness of the molding material arranged between the first entering piece 5 and the second entering piece 6 is non-uniform, the thickness of the molded product after molding may be non-uniform.

  In view of such a problem, it is preferable to use a servo motor as the pressure adjusting means. In this way, when the servo motor is used as the pressure adjusting means, it is possible to arbitrarily change the movable position, the movable speed, and the angle with respect to each of the dies 2 and 3 of the first entering piece 5 and the second entering piece 6. It becomes. For this reason, even if the thickness of the molding material is not uniform, the movable positions of the first entering piece 5 and the second entering piece 6 are changed in accordance with the thickness of the forming material in the pre-pressurization step. It becomes possible to make the thickness of the molded product molded after the pressing step uniform. That is, when a servo motor is used as the pressure adjusting means, the dimensional accuracy of the molded product can be increased.

  DESCRIPTION OF SYMBOLS 1 ... Press molding die, 2 ... Movable die, 3 ... Fixed die, 5 ... First entering piece, 6 ... Second entering piece, 25, 35 ... Elastic body, 53, 63 ... Electric heater (heating means)

Claims (5)

A movable mold fixed to a slide movable up and down by a pressure shaft, a fixed mold fixed to a fixed portion, a first entering piece provided in the movable mold, the first entering piece and a molding material And a second entering piece provided in the fixed mold while being joined via,
The first entering piece and the second entering piece have heating means for heating the first entering piece and the second entering piece,
At least one of the movable mold and the first entering piece or between the fixed mold and the second entering piece, the first entering piece or the second entering piece is separated from the movable mold or the fixed die. An elastic body that is compressed by driving the pressure shaft is provided,
The press mold is characterized in that the first entering piece and the second entering piece, the first entering piece and the movable die, and the second entering piece and the fixed die come into contact with each other by driving the pressure shaft. . A movable mold fixed to a slide movable up and down by a pressure shaft, a fixed mold fixed to a fixed portion, a first entering piece provided in the movable mold, the first entering piece and a molding material And a second entering piece provided in the fixed mold while being joined via,
The first entering piece and the second entering piece have heating means for heating the first entering piece and the second entering piece,
The press mold, wherein the movable mold or the fixed mold is provided with pressure adjusting means for moving the first entering piece or the second entering piece up and down prior to driving the pressure shaft. The press mold according to claim 1 or 2, wherein a cooling flow path through which a cooling medium flows is formed in the first entering piece and the second entering piece. At least one of the movable mold and the first entering piece or between the fixed mold and the second entering piece, the first entering piece or the second entering piece is separated from the movable mold or the fixed die. The press mold according to claim 2, further comprising an elastic body that is compressed by driving the pressure shaft. A press molding method of a molding material using a press molding die,
A pre-pressurizing step of pressurizing and heating the mold-containing piece in a state where the mold-containing piece in which the molding material is disposed is separated from the movable mold or the fixed mold;
A main pressurizing step of pressurizing the die-containing piece with a pressure larger than that of the pre-pressurizing step in a state where the die-containing piece and the movable die are in contact with each other;
A temperature raising step of forming a gap between the mold-containing piece and the movable mold, and between the mold-containing piece and the fixed mold, and simultaneously heating the mold-containing piece while taking out the molding material from the mold-containing piece. And a press molding method.

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