JP5045005B2 - Material molding apparatus and material molding method - Google Patents

Description

  The present invention relates to a material molding apparatus and a material molding method, and in particular, is introduced from a mold in which a workpiece material is disposed, a lid that holds the workpiece material in close contact with the mold, and an opening provided in the lid. The present invention relates to a material molding apparatus and a material molding method including a fluid supplier that supplies a fluid for pressurizing and molding a workpiece material.

  As a method for forming a material, for example, a metal material, there is a superplastic forming method using superplasticity such as an aluminum alloy or a titanium alloy. For the superplastic forming method of the metal material, for example, a blow forming method in which a heated metal work material is pressed and formed is used.

  In the blow molding method, first, a work material is arranged in a mold, and the work material is sandwiched between the mold and closely adhered with a lid, and then air is introduced from a pressure nozzle or the like provided in the lid. This is a molding method in which a workpiece material is deformed by pressurization. Then, the molded product is released from the mold by releasing air or the like that pressurizes the workpiece material.

  The method of releasing the molded workpiece from the mold includes, for example, a method of releasing from the mold using an elastic member such as a spring, or cooling the inside of the molded workpiece with a cooling gas or the like. There is a method in which the molded product is shrunk and released from the mold.

  For example, in Patent Document 1, the inner surface including the bottom portion of the superplastic molded product is cooled by acting a coolant such as a cooling gas from the inner surface side, thereby substantially cooling only the superplastic molded product and shrinking the dimensions. Thereafter, it is shown that the superplastic molded product is separated from the mold and released.

JP-A-6-335738

  By the way, when the molded product is released from the mold using the above-described cooling gas or the like, the inside of the molded product is forcibly cooled by the cooling gas. May occur. As described above, when a difference in the cooling rate occurs in the molded product, there is a possibility that the molded product is partially contracted to cause distortion or deformation in the molded product, thereby reducing the molding accuracy of the molded product.

  Therefore, an object of the present invention is to provide a material molding apparatus and a material molding method that further improve the molding accuracy of the molded material.

The material molding apparatus according to the present invention includes a mold in which a workpiece material is disposed, a lid that holds the workpiece material in close contact with the mold, and a fluid that pressurizes and molds the workpiece material at a predetermined temperature. A material supply device for supplying fluid from an opening provided in the mold, wherein the mold has a spray port for spraying fluid onto the molded workpiece material, and is provided on the lid and the opening and the mold blowing port of via the fluid on-off valve for controlling a transport route of fluid connected by a fluid transport channel by opening and closing, opening and closing control of the fluid transport channel by the fluid on-off valve is molded workpiece material When supplying the fluid, the fluid is supplied from the fluid supplier to the opening provided in the lid, and at that time, the fluid on / off valve is closed so that the fluid does not flow to the fluid conveyance path. It is to put port so as not to supply fluid, shaping the workpiece material Owa After opens the fluid on-off valve, since the pressure of the fluid between the workpiece material which is molded to the lid is higher than the pressure in the fluid transport path, in the reference et Re mold when to shape the workpiece material some pressurized fluid is conveyed to the blowing port of the mold by flowing the fluid transport channel, then, as fluid again closed fluid-off valve does not flow through the fluid transport channel, a blowing port of the mold The communication with the opening of the lid was cut off, and then the lid was removed from the mold, so that the lid side of the workpiece material was opened to the atmosphere, and the pressurized fluid was molded from the spray port provided in the mold. By spraying on the workpiece material, the workpiece material is pushed out to the lid side and released from the mold.

  In the material molding apparatus according to the present invention, the mold has a plurality of spray openings at predetermined intervals.

  In the material molding apparatus according to the present invention, the workpiece material is a superplastic aluminum alloy or a superplastic titanium alloy.

The material molding method according to the present invention includes a preparatory step in which a work material is placed in a mold, a lid is attached and the work material is sandwiched between the mold and the lid, and a lid is provided from the fluid supplier. by supplying fluid to the opening, provided with workpiece material and the molding step of molding under pressure at a predetermined temperature, the fluid transport channel which connects the blowing port provided in the opening and the mold provided on the lid A fluid on / off valve that controls the fluid transport path by opening and closing the fluid transport path is used. During the molding process, the fluid on / off valve is closed so that fluid does not flow to the fluid transport path and is provided from the fluid supplier to the mold. Do not supply fluid to the blown nozzle, and after forming the work material, open the fluid on-off valve, and the pressure of the fluid between the lid and the formed work material is reduced in the fluid conveyance path. since higher pressures, et al. Re gold used when for shaping the workpiece material A pressurized fluid located within transported to blowing port of the mold by flowing the fluid transport channel, then, as fluid is again closed fluid-off valve does not flow into the fluid transport path, blowing mold The communication between the opening and the opening of the lid is cut off, and then the lid is removed from the mold, so that the lid side of the work material is opened to the atmosphere, and the pressurized fluid is formed from the spraying port provided in the mold. And a release step of pushing the workpiece material to the lid side and releasing it from the mold by spraying on the workpiece material.

  In the material molding method according to the present invention, the mold has a plurality of spray ports at predetermined intervals.

  In the material forming method according to the present invention, the workpiece material is a superplastic aluminum alloy or a superplastic titanium alloy.

  As described above, according to the material molding apparatus and the material molding method according to the present invention, the molding accuracy of the molded material can be further improved.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of a material molding apparatus 10. First, the workpiece | work material 12 shape | molded with the shaping | molding apparatus 10 of material is demonstrated.

  It is preferable to use a metal material that causes so-called superplastic deformation as the workpiece material 12. A metal material that causes superplastic deformation can generate a large elongation of about 100% to 1000% by applying a constant strain rate to the metal material at a predetermined temperature. Therefore, the metal material that causes superplastic deformation can be easily deformed and formed into a predetermined shape. Of course, depending on other conditions, the workpiece material 12 is not limited to a metal material that causes superplastic deformation, and other metal materials can be used.

  It is preferable to use a superplastic aluminum alloy, a superplastic titanium alloy, or the like as the metal material that causes superplastic deformation. This is because the parts can be reduced in weight by forming parts such as automobiles and aircrafts using a superplastic aluminum alloy or a superplastic titanium alloy. Of course, the metal material that causes superplastic deformation is not limited to the superplastic aluminum alloy or the superplastic titanium alloy, and other metal materials that cause superplastic deformation can be used.

  Examples of superplastic aluminum alloys include 5000 series aluminum alloys (Al-Mg series aluminum alloys) such as 5083 aluminum alloys, 2000 series aluminum alloys (Al-Cu series aluminum alloys) such as 2004 aluminum alloys, and 7475 aluminum alloys. A 7000 series aluminum alloy (Al-Zn series aluminum alloy) or the like can be used. Of course, the superplastic aluminum alloy is not limited to the superplastic aluminum alloy.

  The superplastic titanium alloy includes, for example, a titanium alloy (Ti-6Al-4V) containing 6% by mass of aluminum and 4% by mass of vanadium, 6% by mass of aluminum, 2% by mass of tin, 6% Titanium alloy (Ti6242) containing 4.5 wt% zirconium, 2 wt% molybdenum, 4.5 wt% aluminum, 3 wt% vanadium, 2 wt% iron, 2 wt% molybdenum A superplastic titanium alloy such as a titanium alloy containing SP (SP700) can be used. Of course, the superplastic titanium alloy is not limited to the superplastic titanium alloy.

  A synthetic resin material can be used for the work material 12. This is because the synthetic resin material can be softened by heating, and the synthetic resin material can be easily deformed and formed into a predetermined shape. As the synthetic resin material, it is preferable to use a thermoplastic resin such as polystyrene resin, vinyl chloride resin, polypropylene resin, polyester resin, polycarbonate resin, or ABS resin. Of course, depending on other conditions, the synthetic resin material is not limited to a thermoplastic resin, and may be a thermosetting resin.

  The work material 12 is preferably a sheet material such as a metal material or a synthetic resin material. When the work material 12 is a metal material, the plate thickness of the metal sheet material is, for example, 0.8 mm to 2.0 mm. Of course, depending on other conditions, the shape of the workpiece material 12 is not limited to the sheet material.

  Next, the material forming apparatus 10 will be described. The material forming apparatus 10 is introduced from a mold 14 on which the workpiece material 12 is disposed, a lid 16 that holds the workpiece material 12 in close contact with the mold 14, and an opening 30 provided in the lid 16. And a fluid supply unit 18 for supplying a fluid for molding at a predetermined temperature.

  The mold 14 has a function of forming the workpiece material 12 into a predetermined shape. The mold 14 is provided with a cavity 20 that is dug down substantially in the center. And the molding surface 22 showing the shape imitating the external shape of a molded product is formed in the inner surface of the metal mold | die 14. FIG. The workpiece 12 is molded in close contact along the molding surface 22.

  A discharge port 24 for discharging a fluid such as air in the cavity 20 out of the mold 14 is provided from the molding surface 22 of the mold 14. When the work material 12 is deformed and comes into close contact with the forming surface 22 by the discharge port 24, the compressed fluid surrounded by the work material 12 and the forming surface 22 can be discharged to the outside as indicated by an arrow A. it can.

  A plurality of heaters (not shown) can be embedded in the mold 14 to heat the workpiece material 12. The heat generated by the heater is conducted to the entire mold 14. The heater can be composed of a thermoelectric element or the like. Further, the temperature of the mold 14 can be freely controlled by a control device or the like (not shown). The workpiece material 12 is disposed at the opening edge portion 26 of the mold 14, and the workpiece material 12 can be heated by the heat generated by the heater.

  The lid 16 has a function of bringing the workpiece material 12 into close contact with the mold 14 and is disposed substantially vertically above the mold 14. And the lid | cover 16 is being fixed to the platen (pressure plate) which is not shown in figure, and is provided so that a movement in a substantially perpendicular direction is possible. The edge portion 28 of the lid 16 sandwiches the peripheral edge portion of the work material 12 disposed on the mold 14 together with the opening edge portion 26 of the mold 14. Thereby, the peripheral part of the workpiece 12 is sandwiched between the mold 14 and the lid 16. The lid can be manufactured by, for example, machining a metal material.

  In addition, a plurality of heaters can be embedded in the lid 16 similarly to the mold 14. And the workpiece | work material 12 clamped with the metal mold | die 14 and the lid | cover 16 with the heater embedded in the metal mold | die 14 can be heated to predetermined temperature.

  Here, the heating of the workpiece 12 is not limited to a heating method using a heater embedded in the mold 14 or the lid 16, and may be heated using a heating device such as a heating furnace, for example. By setting the workpiece material 12 sandwiched between the mold 14 and the lid 16 in the heating furnace, the workpiece material 12 can be heated to a predetermined temperature. For the heating furnace or the like, general heating equipment used for heat treatment of a metal material can be used.

  The lid 16 is formed with an opening 30 into which a fluid for pressurizing and forming the workpiece material 12 is introduced. As indicated by an arrow B from the opening 30 provided in the lid 16, fluid can be supplied to the inside of the lid 16. Then, by supplying a fluid to the inside of the lid 16, the space 31 sealed with the lid 16 and the work material 12 can be boosted. Thereby, the work material 12 is pressurized by the fluid, and the work material 12 can be deformed toward the molding surface 22 of the mold 14.

  As the fluid introduced from the opening 30 provided in the lid 16, an inert gas such as argon gas, or a gas such as air, nitrogen gas, or carbon dioxide gas can be used. Of course, depending on other conditions, the fluid is not limited to gas but may be liquid.

  In the material molding apparatus 10 shown in FIG. 1, the lid 16 is disposed on the upper side and the mold 14 is disposed on the lower side. However, the arrangement of the mold 14 and the lid 16 is such an arrangement. There is no limit. For example, the mold 14 may be disposed on the upper side and the lid 16 may be disposed on the lower side.

  The fluid supply unit 18 has a function of supplying a fluid for forming the workpiece 12 by pressurizing and pressurizing the space 31 sealed by the lid 16 and the workpiece 12. The fluid supplier 18 can be a compressor, for example, an air compressor. Of course, the fluid supplier 18 is not limited to a compressor. The fluid supplier 18 and the opening 30 of the lid 16 are connected by a pipe or the like for supplying a fluid. By supplying the fluid through the pipe or the like, a space 31 sealed by the lid 16 and the work material 12 is formed. For example, the pressure can be increased to 5 MPa.

  In the material molding apparatus 10, the mold 14 has a spray port 34 for spraying a fluid onto the molded workpiece 12, and an opening 30 provided in the lid 16 and a spray port 34 of the mold 14. Is connected by a fluid conveyance path 36, and the fluid conveyance path 36 has a valve 38 for opening and closing the fluid.

  The mold 14 has a spray port 34 for spraying the pressurized fluid used to pressurize the workpiece material 12 onto the molded workpiece material 12. By spraying the pressurized fluid onto the molded workpiece 12, the molded workpiece 12 can be released from the mold 14. The spray port 34 can be provided in the mold 14 by machining a general metal material, for example.

  The inner diameter of the spray port 34 is preferably 1 mm or less. This is because, when the inner diameter of the spray port 34 is large, a trace of the shape of the spray port 34 may be formed on the molded workpiece 12. Of course, depending on other conditions, the size of the spray port 34 is not limited to the above size. Moreover, although the cross-sectional shape of the blowing port 34 can be made into circular shape, it is not specifically limited, Polygon shape etc. may be sufficient.

  It is preferable that a plurality of spray ports 34 of the mold 14 are provided at a predetermined interval. This is because by providing a plurality of spray ports 34 in the mold 14, a more uniformly pressurized fluid can be sprayed to the molded workpiece 12 adhered to the molding surface 22. This is because distortion and deformation of the molded product released from the mold 14 can be suppressed.

  The quantity and arrangement of the spray ports 34 can be changed according to the shape of the molded product. The spray port 34 is arranged according to the shape of the molded product so that the workpiece 12 molded from the mold 14 can be pushed up more uniformly and released. For example, the mold 14 can be provided with a plurality of spray ports 34 at substantially equal intervals. Of course, the predetermined intervals are not limited to substantially equal intervals, and may be different intervals.

  The opening 30 provided in the lid 16 and the spray port 34 of the mold 14 are connected by a fluid transfer pipe 36. The fluid transport pipe 36 has a function as a fluid transport path for transporting the fluid pressurized the work material 12 to the spray port 34 of the mold 14. As the fluid transfer pipe 36, a general gas pipe that is a pipe used for transferring gas or a general liquid pipe used for transferring liquid can be used. Of course, depending on other conditions, the fluid transfer pipe 36 is not limited to the above-described pipe or the like.

  Further, when the workpiece 12 is continuously formed, the fluid heated to a predetermined temperature, for example, 500 ° C. is conveyed by the fluid conveying pipe 36. Therefore, it is preferable to use a heat-resistant pipe made of a heat-resistant material or the like for the fluid transfer pipe 36.

  When a plurality of spray ports 34 are provided at a predetermined interval in the mold 14, for example, the fluid transport pipe 36 connected to the opening 30 of the lid 16 is branched and then the fluid transport pipe branched. The fluid can be transported by forming a fluid transport piping network in which 36 is connected to the spray port 34 of the mold 14. The fluid conveyance piping network divides the fluid conveyance piping 36 connected to the opening 30 of the lid 16 by, for example, the number of the spray ports 34 of the mold 14, and the branched fluid conveyance piping 36 is divided into the mold 14. It can be provided by connecting to the spraying port 34. Of course, the arrangement method of the fluid transfer pipe 36 is not limited to the above method.

  The fluid transfer pipe 36 has a valve 38 for opening and closing the fluid. First, when forming the workpiece 12 by pressurizing with the fluid, the space 31 between the lid 16 and the workpiece 12 can be pressurized with the fluid by closing the valve 38. Then, after pressurizing the work material 12 with a fluid and bringing it into close contact with the molding surface 22, the pressurized fluid can be conveyed by the fluid conveying pipe 36 by opening the valve 38. Then, by closing the valve 38 again, the lid 16 can be opened and the fluid can be sprayed from the spray port 34 of the mold 14 to the work material 12 formed. Such opening and closing of the valve 38 can be automatically performed by, for example, a control device (not shown).

  Here, when a plurality of the spray ports 34 are provided in the mold 14, it is preferable that the valve 38 is provided before the fluid transfer pipe 36 is branched. Since the valve 38 is disposed between the opening 30 of the lid 16 and the branch point of the fluid conveyance pipe 36, the opening and closing of the fluid sprayed from the plurality of spray ports 34 can be controlled by one valve 38. Because. Of course, the arrangement and quantity of the valve 38 are not limited depending on other conditions.

  Further, when the workpiece 12 is continuously formed, the fluid heated to a predetermined temperature, for example, 500 ° C. is conveyed by the fluid conveying pipe 36. For this reason, the valve 38 is preferably a heat-resistant valve 38 manufactured from a heat-resistant material or the like. Of course, depending on other conditions, the valve 38 is not limited to the valve 38. In addition, when a gas is used as the fluid, a general gas valve is used, and when a liquid is used as the fluid, a general liquid valve is used.

  Next, the operation of the material molding apparatus 10 will be described. 2 to 5 are diagrams showing the operation of the material molding apparatus 10. FIG. 2 is a diagram illustrating a state in which the workpiece material 12 is set in the material forming apparatus 10. FIG. 3 is a view showing a state in which the workpiece 12 is pressed by a fluid and molded. FIG. 4 is a diagram illustrating a state in which the fluid used for pressurization of the workpiece material 12 is conveyed by the fluid conveyance pipe 36. FIG. 5 is a view showing a state in which the fluid used for pressurizing the workpiece material 12 is sprayed onto the molded workpiece material 12 and released from the mold 14. 2 to 5, the flow of fluid when the workpiece 12 is formed is indicated by solid arrows, and the flow of fluid when the workpiece 12 is released is indicated by broken arrows.

  As shown in FIG. 2, the workpiece 12 is sandwiched between a mold 14 and a lid 16 and set in a material molding apparatus 10. The work material 12 is sandwiched between and closely attached to the mold 14 and the lid 16 by pressurizing the mold 14 and the lid 16 with a pressure device such as a platen (pressure plate) (not shown). The workpiece material 12 is heated to a predetermined temperature, for example, 500 ° C. by a heater embedded in the mold 14 or the lid 16.

  As shown in FIG. 3, a fluid that pressurizes the work material 12 from a fluid supply device 18 such as a compressor is introduced into a space 31 sealed by the cover 16 and the work material 12 from an opening 30 of the cover 16. At this time, the valve 38 that opens and closes the fluid provided in the fluid transport pipe 36 is closed so that the fluid does not flow into the fluid transport pipe 36. Then, the fluid is pressurized to, for example, 5 MPa by the fluid supplier 18 or the like, and pressurizes the heated workpiece material 12. As a result, the fluid deforms the workpiece material 12 at a predetermined strain rate and closely contacts the molding surface 22 of the mold 14. A gas such as air between the work material 12 and the mold 14 is exhausted from a discharge port 24 provided in the mold 14.

  As shown in FIG. 4, after the workpiece 12 is formed, a valve 38 that opens and closes the fluid provided in the fluid transfer pipe 36 is opened. The pressure of the fluid between the lid 16 and the molded workpiece 12 is increased to, for example, 5 MPa, and is higher than the pressure in the fluid transfer pipe 36. Therefore, the fluid flows into the fluid conveyance pipe 36 having a lower pressure. Then, the fluid is transported to the spray port 34 of the mold 14 through the fluid transport pipe 36. After the fluid is transported through the fluid transport pipe 36, the valve 38 is closed again.

  As shown in FIG. 5, the lid 16 is removed from the molded workpiece 12, and the remaining fluid that is not transported by the fluid transport pipe 36 is released. When the lid 16 is removed, the pressure of the fluid in the fluid transport pipe 36 becomes higher than the pressure of the open space, for example, atmospheric pressure. Due to the pressure difference, the workpiece 14 is blown from the blowing port 34 of the mold 14 and is blown to the workpiece 12. Then, the molded workpiece material 12 is pushed up with a fluid, whereby the molded workpiece material 12 is released from the mold 14. When the workpiece 12 is continuously formed, a new workpiece 12 is set in the material forming apparatus 10 as shown in FIG.

  Next, a material forming method using the material forming apparatus 10 having the above-described configuration will be described in detail. FIG. 6 is a flowchart showing a material forming method. The material molding method includes a preparation step (S10), a molding step (S12), and a mold release step (S14).

  The preparation step (S10) is a step in which the workpiece material 12 is arranged on the mold 14 and the workpiece material 12 is sandwiched between the mold 14 and closely adhered by the lid 16 to prepare.

  A workpiece material 12, for example, a superplastic aluminum alloy workpiece material 12 is placed in the mold 14. The workpiece material 12 is sandwiched between the mold 14 and the lid 16, and is placed in close contact with the mold 14 and the lid 16 with a platen (pressure plate) or the like.

  The forming step (S12) is a step of forming the work material 12 by pressurizing it with a fluid introduced from the opening 30 provided in the lid 16.

  The workpiece material 12 is heated to a predetermined temperature by a heater embedded in the mold 14 and the lid 16. Here, when the work material 12 is a metal material that causes superplastic deformation, the predetermined temperature is preferably set to a temperature at which the work material 12 causes superplastic deformation. This is because the workpiece material 12 can be easily deformed and molded by heating the workpiece material 12 at a temperature at which superplastic deformation occurs. Of course, depending on other conditions, the heating temperature of the workpiece 12 is not limited to the above temperature.

  When the work material 12 is a superplastic aluminum alloy, the heating temperature is preferably 400 ° C to 500 ° C. Moreover, when the workpiece | work material 12 is a superplastic titanium alloy, it is preferable that heating temperature is 750 degreeC-950 degreeC. This is because the superplastic aluminum alloy and the superplastic titanium alloy can cause superplastic deformation in the above temperature range.

  The workpiece 12 heated to a predetermined temperature is supplied from a fluid supplier 18 such as a compressor, and is pressurized by a fluid introduced from an opening 30 provided in the lid 16. When the work material 12 is pressurized with a fluid, a valve 38 that opens and closes the fluid provided in the fluid conveyance pipe 36 that is a fluid conveyance path is closed to prevent the fluid from flowing into the fluid conveyance pipe 36. .

  As described above, for example, air, nitrogen gas, carbon dioxide gas, or an inert gas such as argon gas can be used as the fluid for pressurizing the workpiece material 12. Of course, depending on other conditions, the fluid is not limited to gas, and liquid or the like can be used.

  When the work material 12 is a metal material that causes superplastic deformation, it is preferable that the fluid that pressurizes the work material 12 pressurizes the work material 12 at a predetermined strain rate at which the work material 12 causes superplastic deformation. This is because by pressing the work material 12 at a strain rate at which superplastic deformation occurs, the work material 12 can be easily deformed and formed. The fluid blowing pressure is preferably 5 MPa to 50 MPa, for example. Of course, depending on other conditions, the blow pressure of the fluid is not limited to the above pressure range.

When the workpiece material 12 is a superplastic aluminum alloy, it is pressurized with a fluid such that the strain rate of the superplastic aluminum alloy workpiece material 12 is 1.0 × 10 ⁻³ / s to 1.0 / s. It is preferable. When the work material 12 is a superplastic titanium alloy, it is pressurized with a fluid such that the strain rate of the superplastic titanium alloy work material 12 is 1.0 × 10 ⁻⁴ / s to 1.0 / s. It is preferable. This is because the superplastic aluminum alloy and the superplastic titanium alloy can cause superplastic deformation within the range of the strain rate. Of course, depending on other conditions, the strain rate of the workpiece 12 is not limited to the strain rate.

  The mold release step (S14) is a step of releasing the molded workpiece 12 from the mold 14.

  By opening a valve 38 provided in the fluid conveyance pipe 36, the fluid pressurized the work material 12 flows to the fluid conveyance pipe 36 and is conveyed. Since the opening 30 provided in the lid 16 and the spray port 34 of the mold 14 are connected by the fluid transport pipe 36, the fluid is transported to the spray port 34 of the mold 14. Then, after closing the valve 38, the lid 16 is opened, and fluid is sprayed onto the molded workpiece 12, so that the molded workpiece 12 is fluid that is sprayed from the spray port 34 of the mold 14. Pushed up and released from the mold 14.

  Further, when a plurality of spray ports 34 of the mold 14 are provided at a predetermined interval on the mold 14, fluid is sprayed from the plurality of spray ports 34. 12 can be pushed up more uniformly and released from the mold 14.

  In the case where the workpiece material 12 is, for example, a 2000 series aluminum alloy or a 7000 series aluminum alloy, heat treatment may be performed to improve mechanical properties after forming. This is because the strength of the molded workpiece 12 can be further improved by performing a solution treatment, an artificial aging treatment, or the like after the molding. Of course, even if the workpiece material 12 is a metal material, it can be used without heat treatment.

  The molded article can be used as a vehicle part or an aircraft part. As vehicle parts, in particular, automobile parts, for example, they can be used for fenders, engine hood outer plates and inner plates, luggage outer plates and inner plates, door outer plates and inner plates. Of course, the molded article is not limited to the above application.

  According to the said structure, the distortion and deformation | transformation of the shape | molded workpiece | work material can be suppressed, and it can release from a metal mold | die by spraying the fluid which pressurized the workpiece | work material on the shape | molded workpiece | work material. Thereby, the molding accuracy such as the dimensional accuracy of the molded product can be further improved.

  According to the above configuration, a plurality of spray ports of the mold are provided at predetermined intervals on the mold, so that the fluid is sprayed more uniformly on the work material formed and molded from the mold. The formed workpiece material can be released. Thereby, the molding accuracy such as the dimensional accuracy of the molded product can be further improved.

  According to the above configuration, since the molded workpiece material is released using the fluid used for molding the workpiece material, there is no need for a new compressor or the like, so that the molded product can be manufactured. Costs can be reduced.

  According to the above-described configuration, the workpiece material molded from the mold can be easily released from the mold while suppressing the distortion and deformation by spraying the fluid pressurized the workpiece material onto the molded workpiece material. Even when workpiece materials are continuously molded, the molding cycle can be rotated more rapidly, and the productivity of the molded product is further improved.

In embodiment of this invention, it is a figure which shows the structure in the shaping | molding apparatus 10 of material. In embodiment of this invention, it is a figure which shows the state which set the workpiece | work material 12 to the shaping | molding apparatus 10 of material. In embodiment of this invention, it is a figure which shows the state which pressurizes and forms the workpiece | work material 12 with the fluid. In embodiment of this invention, it is a figure which shows the state which is conveying with the fluid conveyance piping 36 the fluid used for pressurization of the workpiece | work material 12. FIG. In embodiment of this invention, it is a figure which shows a mode that the fluid used for the pressurization of the workpiece | work material 12 is sprayed on the shape | molded workpiece | work material 12, and it molds from the metal mold | die 14. FIG. In embodiment of this invention, it is a flowchart which shows the shaping | molding method of material.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Material forming apparatus, 12 Work material, 14 Mold, 16 Lid, 18 Fluid supply, 20 Cavity, 22 Molding surface, 24 Discharge port, 26 Opening edge of mold, 28 Lid edge, 30 Opening, 34 spray port, 36 fluid transfer piping, 38 valves.

Claims (6)

Fluid supply that supplies a mold for placing the workpiece material, a lid that holds the workpiece material in close contact with the mold, and a fluid for pressurizing and molding the workpiece material at a predetermined temperature from an opening provided in the lid And
A material molding apparatus comprising:
The mold has a spray port for spraying fluid onto the molded workpiece material,
The opening provided in the lid and the spray port of the mold are connected by a fluid conveyance path via a fluid on-off valve that controls the fluid conveyance path by opening and closing ,
The opening / closing control of the fluid conveyance path by the fluid opening / closing valve
When forming the workpiece material, fluid is supplied from the fluid supplier to the opening provided in the lid, and at that time, the fluid on-off valve is closed so that the fluid does not flow into the fluid conveyance path. It is to provided a spraying mouth so as not to supply fluid,
After the work material has been formed, the fluid on-off valve is opened and the fluid pressure between the lid and the formed work material is higher than the pressure in the fluid transfer path. the pressurized fluid within roasted mold is transported to blowing port of the mold by flowing the fluid transport channel,
Thereafter, as the fluid is again closed fluid-off valve does not flow into the fluid transport path, it cuts off the communication between the opening of the blowing port and the lid of the mold,
After that, by removing the lid from the mold, the lid side of the workpiece material is opened to the atmosphere, and the workpiece fluid is sprayed onto the molded workpiece material from the spray port provided in the mold. An apparatus for molding a material, characterized in that the material is extruded to the lid side and released from the mold. A material molding apparatus according to claim 1,
A molding apparatus for a material, wherein the mold has a plurality of spray ports at predetermined intervals. The material molding apparatus according to claim 1 or 2,
An apparatus for forming a material, wherein the work material is a superplastic aluminum alloy or a superplastic titanium alloy. A preparatory step of placing a work material on a mold, covering the work material between the mold and the lid, and attaching the work material to the mold;
A molding step of pressurizing and molding a workpiece material at a predetermined temperature by supplying a fluid from a fluid supplier to an opening provided in the lid;
Provided in the fluid transport path connecting the blowing port provided in the opening and the mold provided on the lid, using a fluid-off valve that controls the transport path of the fluid by opening and closing the fluid transport channel, when the molding process, close the fluid on-off valve to prevent fluid from supply fluid so as not flow the fluid delivery path from the fluid supply to the spraying mouth provided in the mold, after molding of the workpiece material is over, open the fluid shutoff valve, since the pressure of the fluid between the workpiece material which is molded to the lid is higher than the pressure in the fluid transport path, pressurized fluid in using et Re in the mold when making molded workpiece material was allowed to flow into the fluid transport channel is conveyed to the blowing port of the mold, then prevented from flowing to the fluid transport channel fluid again closed fluid-off valve, and the opening of the blowing port and the lid of the mold The work material lid can be removed by removing the lid and then removing the lid from the mold. The open to the atmosphere, by spraying the workpiece material molded pressurized fluid from blowing port provided in the mold, a release step of releasing from the mold by extruding the workpiece material on the lid side,
A method of forming a material, comprising: A method for molding a material according to claim 4,
The metal mold has a plurality of spray holes at a predetermined interval. A method for molding a material according to claim 4 or 5,
A method for forming a material, wherein the work material is a superplastic aluminum alloy or a superplastic titanium alloy.

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