WO2023038083A1 - 成形装置 - Google Patents
成形装置 Download PDFInfo
- Publication number
- WO2023038083A1 WO2023038083A1 PCT/JP2022/033727 JP2022033727W WO2023038083A1 WO 2023038083 A1 WO2023038083 A1 WO 2023038083A1 JP 2022033727 W JP2022033727 W JP 2022033727W WO 2023038083 A1 WO2023038083 A1 WO 2023038083A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- molding
- parts
- metal pipe
- pipe material
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/041—Means for controlling fluid parameters, e.g. pressure or temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/40—Direct resistance heating
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/673—Quenching devices for die quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0004—Devices wherein the heating current flows through the material to be heated
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2261/00—Machining or cutting being involved
Definitions
- the present disclosure relates to molding equipment.
- Patent Document 1 Conventionally, the one described in Patent Document 1 is known as a molding apparatus for molding metal materials. This forming apparatus forms a part of a desired shape by pressing a plate-like member.
- the parts molded by the molding equipment described above are used to construct a given structure. Therefore, the molding apparatus must press multiple times to mold multiple parts. However, when the number of parts of the structure increases, the number of presses also increases, resulting in an increase in man-hours.
- an object of the present disclosure is to provide a molding apparatus capable of reducing man-hours for manufacturing a plurality of parts.
- a molding apparatus is a molding apparatus that heats and hardens a metal material, and molds a plurality of parts by one-time molding of one metal material.
- This molding machine is a molding machine that heats and hardens metal materials.
- the molding apparatus molds a plurality of parts by one-time molding of one metal material. Therefore, the molding apparatus can mold a plurality of parts at once by performing molding only once for one metal material. Therefore, man-hours for manufacturing a plurality of parts can be reduced.
- a molding apparatus is a molding apparatus that performs expansion molding by supplying a fluid to a metal material, and molds a plurality of parts in one molding operation for one metal material.
- This molding device is a molding device that performs expansion molding by supplying fluid to metal materials.
- the molding apparatus molds a plurality of parts by one-time molding of one metal material. Therefore, the molding apparatus can mold a plurality of parts at once by performing molding only once for one metal material. Therefore, man-hours for manufacturing a plurality of parts can be reduced.
- the molding device may mold a part having a closed cross section as the part.
- the number of parts can be reduced as compared with a structure formed by combining a plurality of parts.
- the molding device may mold, as a plurality of parts, a long first part and second and third parts on both sides of the first part in the longitudinal direction. This makes it possible to mold the elongated first part by adding the second part and the third part to both longitudinal sides of the first part.
- the molding device may provide a difference in strength between one part and the other part among the plurality of parts. This makes it easier to adjust the strength according to the application of each part.
- FIG. 1 is a schematic configuration diagram showing a molding device according to an embodiment of the present disclosure
- FIG. FIG. 2(a) is a schematic side view showing the heating and expansion unit.
- FIG. 2(b) is a cross-sectional view showing how the nozzle seals the metal pipe material.
- 3(a) and 3(b) are sectional views showing the state of molding.
- FIG. 4(a) is a schematic configuration diagram of a molded product
- FIG. 4(b) is a schematic top view of a lower mold. It is a figure which shows the specific example of a molded product. It is an expansion perspective view of a molded article. It is a figure which shows a front bumper.
- FIG. 4 is an exploded perspective view showing a front bumper;
- FIG. 4 is an exploded perspective view showing a front bumper;
- FIG. 4 is an exploded perspective view showing a front bumper;
- FIG. 4 is an exploded perspective view showing a front bumper;
- FIG. 4 is an exploded perspective
- FIG. 9 is a cross-sectional view taken along line IX-IX shown in FIG. 8;
- FIG. 5 is an exploded perspective view showing a front bumper configured using parts molded by a molding apparatus according to a comparative example;
- FIG. 5 is a diagram showing characteristics of a front bumper configured using parts molded by the molding apparatus according to the embodiment and a front bumper according to a comparative example;
- FIG. 1 is a schematic configuration diagram of a molding device 1 according to this embodiment.
- a molding apparatus 1 is an apparatus for molding a hollow metal pipe by blow molding.
- the molding device 1 is installed on a horizontal plane.
- the molding apparatus 1 includes a molding die 2 , a drive mechanism 3 , a holding section 4 , a heating section 5 , a fluid supply section 6 , a cooling section 7 and a control section 8 .
- the metal pipe material 40 (metal material) refers to a hollow article before completion of molding by the molding apparatus 1 .
- the metal pipe material 40 is a hardenable steel type pipe material.
- the direction in which the metal pipe material 40 extends during molding may be referred to as the "longitudinal direction”
- the direction orthogonal to the longitudinal direction may be referred to as the "width direction”.
- the molding die 2 is a die for molding the metal pipe 140 from the metal pipe material 40, and includes a lower die 11 and an upper die 12 facing each other in the vertical direction.
- the lower die 11 and the upper die 12 are constructed from steel blocks.
- Each of the lower die 11 and the upper die 12 is provided with a recess in which the metal pipe material 40 is accommodated.
- the lower mold 11 and the upper mold 12 are in close contact with each other (mold closed state), and each recess forms a target-shaped space in which the metal pipe material is to be molded. Therefore, the surface of each recess becomes the molding surface of the molding die 2 .
- the mold 11 on the lower side is fixed to the base 13 via a die holder or the like.
- the upper die 12 is fixed to the slide of the drive mechanism 3 via a die holder or the like.
- the drive mechanism 3 is a mechanism that moves at least one of the lower mold 11 and the upper mold 12.
- the drive mechanism 3 has a configuration that moves only the upper mold 12 .
- the drive mechanism 3 includes a slide 21 that moves the upper die 12 so that the lower die 11 and the upper die 12 are joined together, and a pull-back cylinder as an actuator that generates a force to lift the slide 21 upward. 22 , a main cylinder 23 as a drive source that pressurizes the slide 21 downward, and a drive source 24 that applies a drive force to the main cylinder 23 .
- the holding part 4 is a mechanism that holds the metal pipe material 40 arranged between the lower mold 11 and the upper mold 12 .
- the holding part 4 has a lower electrode 26 and an upper electrode 27 that hold the metal pipe material 40 at one end in the longitudinal direction of the molding die 2 and a metal pipe material at the other end in the longitudinal direction of the molding die 2 .
- the lower electrode 26 and the upper electrode 27 on both sides in the longitudinal direction hold the metal pipe material 40 by sandwiching the end portions of the metal pipe material 40 from above and below.
- the upper surface of the lower electrode 26 and the lower surface of the upper electrode 27 are formed with grooves having a shape corresponding to the outer peripheral surface of the metal pipe material 40 .
- a driving mechanism (not shown) is provided for the lower electrode 26 and the upper electrode 27 so that they can move independently in the vertical direction.
- the heating unit 5 heats the metal pipe material 40 .
- the heating unit 5 is a mechanism that heats the metal pipe material 40 by energizing the metal pipe material 40 .
- the heating unit 5 heats the metal pipe material 40 between the lower mold 11 and the upper mold 12 while the metal pipe material 40 is separated from the lower mold 11 and the upper mold 12.
- the heating unit 5 includes the lower electrode 26 and the upper electrode 27 on both sides in the longitudinal direction, and a power source 28 for supplying current to the metal pipe material 40 via these electrodes 26 and 27 .
- the heating unit may be arranged in a pre-process of the molding apparatus 1 to perform heating outside.
- the fluid supply unit 6 is a mechanism for supplying high-pressure fluid into the metal pipe material 40 held between the lower mold 11 and the upper mold 12.
- the fluid supply unit 6 supplies high-pressure fluid to the metal pipe material 40 that has been heated by the heating unit 5 to a high temperature state, thereby expanding the metal pipe material 40 .
- the fluid supply units 6 are provided on both ends of the molding die 2 in the longitudinal direction.
- the fluid supply unit 6 includes a nozzle 31 that supplies fluid from the opening at the end of the metal pipe material 40 to the inside of the metal pipe material 40, and a drive that moves the nozzle 31 forward and backward with respect to the opening of the metal pipe material 40. It comprises a mechanism 32 and a source 33 for supplying high pressure fluid into the metal pipe material 40 through the nozzle 31 .
- the drive mechanism 32 brings the nozzle 31 into close contact with the end of the metal pipe material 40 while ensuring sealing performance during fluid supply and exhaust, and separates the nozzle 31 from the end of the metal pipe material 40 at other times.
- the fluid supply unit 6 may supply gas such as high-pressure air or inert gas as the fluid. Further, the fluid supply unit 6 and the holding unit 4 having a mechanism for vertically moving the metal pipe material 40 and the heating unit 5 may be included in the same device.
- FIG. 2(a) is a schematic side view showing the heating and expansion unit 150.
- FIG. 2(b) is a cross-sectional view showing how the nozzle 31 seals the metal pipe material 40. As shown in FIG.
- the heating and expansion unit 150 includes the lower electrode 26 and the upper electrode 27 described above, an electrode mounting unit 151 mounting the electrodes 26 and 27, the nozzle 31 and the drive mechanism 32 described above. , a lifting unit 152 and a unit base 153 .
- the electrode mounting unit 151 includes an elevating frame 154 and electrode frames 156 and 157 . Electrode frames 156 and 157 function as part of drive mechanism 60 that supports and moves electrodes 26 and 27, respectively.
- the driving mechanism 32 drives the nozzle 31 to move up and down together with the electrode mounting unit 151 .
- the driving mechanism 32 includes a piston 61 holding the nozzle 31 and a cylinder 62 driving the piston.
- the lifting unit 152 includes a lifting frame base 64 attached to the upper surface of the unit base 153, and a lifting actuator 66 for applying a lifting motion to the lifting frame 154 of the electrode mounting unit 151 by the lifting frame base 64. ing.
- the elevating frame base 64 has guide portions 64 a and 64 b that guide the elevating motion of the elevating frame 154 with respect to the unit base 153 .
- the lifting unit 152 functions as part of the driving mechanism 60 of the holding section 4 .
- the heating and expansion unit 150 has a plurality of unit bases 153 with different upper surface inclination angles, and by exchanging these bases, the lower electrode 26, the upper electrode 27, the nozzle 31, the electrode mounting unit 151, the driving mechanism 32, the lifting and lowering It is possible to collectively change and adjust the tilt angle of the unit 152 .
- the nozzle 31 is a cylindrical member into which the end of the metal pipe material 40 can be inserted.
- the nozzle 31 is supported by the driving mechanism 32 so that the center line of the nozzle 31 is aligned with the reference line SL1.
- the inner diameter of the supply port 31a at the end of the nozzle 31 on the metal pipe material 40 side substantially matches the outer diameter of the metal pipe material 40 after expansion molding.
- the nozzle 31 supplies high-pressure fluid to the metal pipe material 40 from the internal flow path 63 .
- gas etc. are mentioned as an example of a high-pressure fluid.
- the cooling unit 7 is a mechanism for cooling the molding die 2. By cooling the molding die 2 , the cooling section 7 can rapidly cool the metal pipe material 40 when the expanded metal pipe material 40 comes into contact with the molding surface of the molding die 2 .
- the cooling unit 7 includes flow paths 36 formed inside the lower mold 11 and the upper mold 12 and a water circulation mechanism 37 that supplies and circulates cooling water to the flow paths 36 .
- the control unit 8 is a device that controls the molding device 1 as a whole.
- the control unit 8 controls the drive mechanism 3 , the holding unit 4 , the heating unit 5 , the fluid supply unit 6 and the cooling unit 7 .
- the control unit 8 repeats the operation of molding the metal pipe material 40 with the molding die 2 .
- control unit 8 controls the timing of transport from a transport device such as a robot arm to place the metal pipe material 40 between the lower mold 11 and the upper mold 12 in the open state. Deploy. Alternatively, the controller 8 may manually place the metal pipe material 40 between the lower mold 11 and the upper mold 12 by an operator. In addition, the control unit 8 supports the metal pipe material 40 with the lower electrodes 26 on both sides in the longitudinal direction, and then lowers the upper electrode 27 to sandwich the metal pipe material 40. Control. Moreover, the control part 8 controls the heating part 5, and energizes and heats the metal pipe material 40. As shown in FIG. As a result, an axial current flows through the metal pipe material 40, and the electrical resistance of the metal pipe material 40 itself causes the metal pipe material 40 itself to generate heat due to Joule heat.
- the control unit 8 controls the drive mechanism 3 to lower the upper mold 12 and bring it closer to the lower mold 11 to close the molding mold 2 .
- the control unit 8 controls the fluid supply unit 6 to seal the openings at both ends of the metal pipe material 40 with the nozzles 31 and supply the fluid.
- the metal pipe material 40 softened by heating expands and comes into contact with the molding surface of the molding die 2 .
- the metal pipe material 40 is shape
- the control unit 8 closes the molding die 2 and supplies the fluid to the metal pipe material 40 with the fluid supply unit 6 to perform blow molding (primary blow).
- the control unit 8 molds the pipe portion 43 in the main cavity portion MC formed by the groove portions 47 of the molds 11 and 12, and causes the portion corresponding to the flange portion 44 to enter the sub-cavity portion SC.
- the control unit 8 further closes the molding die 2 to further crush the portion that has entered the sub-cavity portion SC, thereby molding the flange portion 44 .
- the control unit 8 lifts the upper mold 12 and separates it from the metal pipe material 40 to open the mold. Thereby, the molded product 41 is molded.
- the molding device 1 is a molding device 1 that heats and hardens a metal pipe material 40 (metal material), and can mold a plurality of parts by one molding for one metal pipe material 40. can.
- the molding device 1 is a molding device 1 that performs expansion molding by supplying a fluid to the metal pipe material 40 (metal material). Parts can be molded.
- one molding is a series of steps from setting a new metal pipe material 40 to the molding apparatus 1 until molding the molded product 41 .
- a series of processes including placement of the metal pipe material 40 in the mold 12, heating, and expansion molding correspond to one molding.
- a single metal material is a metal material that extends continuously without being cut in the middle.
- the molded product 41 will be described with reference to FIG. 4(a). Molding a plurality of parts in one molding for one metal pipe material 40 means that a plurality of parts are included in the molded product 41 . Note that before the molded product 41 is cut, the plurality of parts are in a state of being connected to each other as one single member.
- the molded product 41 is formed by forming a long first component 50 , second components 51 on both sides of the first component 50 in the longitudinal direction, and third components. Part 52 is molded.
- the second component 51 is provided on one longitudinal end side of the molded product 41 .
- An electrode portion 53 held by the electrode of the heating portion 5 is formed at the position of the molded product 41 closest to one end.
- a gradually changing portion 56A is formed between the electrode portion 53 and the second component 51 .
- a gradually changing portion 56B is formed between the second part 51 and the first part 50 .
- the third component 52 is provided on the other longitudinal end side of the molded product 41 .
- An electrode portion 54 held by the electrode of the heating portion 5 is formed at the position of the most other end side of the molded product 41 .
- a gradually changing portion 57A is formed between the electrode portion 54 and the third component 52 .
- a gradually changing portion 57B is formed between the third component 52 and the first component 50 .
- the gradually changing portions 56A, 56B, 57A, and 57B are portions that gradually change shape by being formed between each portion having a unique shape.
- the boundaries of the parts of the molded product 41 are cut by laser processing or the like. Thereby, the first part 50, the second part 51, and the third part 52 can be handled as one independent part.
- the parts 50, 51, 52 have closed cross sections. That is, the molding apparatus 1 molds the parts 50, 51, 52 having closed cross sections as parts.
- FIG. 4(b) is a schematic top view showing the lower mold 11 for molding the molded article 41 as described above.
- the upper mold 12 also has the same structure.
- the groove portion 47 of the mold 11 includes the gradually changing portion 56A of the molded product 41, the second component 51, the gradually changing portion 56B, the first component 50, the gradually changing portion 57B, the gradually changing portion 57B, and the gradually changing portion 56B.
- the gradual change molding portion 76A, the second part molding portion 71, the gradual change molding portion 76B, the first part molding portion 70, the gradual change molding portion 76A, and the gradual change molding portion 76B at positions and shapes corresponding to the parts 52 and the gradual change portion 57A. It has a molding portion 77B, a third component molding portion 72, and a gradual change molding portion 77A.
- the molding apparatus 1 may provide a difference in strength between one part and the other part among the plurality of parts.
- the molding apparatus 1 may provide the strength difference by making the strength of the first part 50 higher than that of the second part 51 and the third part 52 .
- the molding apparatus 1 may perform molding so that the parts to be strengthened are quenched and the parts to be reduced in strength are not quenched.
- the cooling unit 7 (see FIG. 1) of the molding apparatus 1 keeps the temperature of the molding surface of the cooling area CE including the first part molding unit 70 at a temperature at which the molded product 41 can be quenched.
- the temperature of the molding surface of the region should be kept at a temperature at which the molding 41 cannot be quenched.
- the cooling unit 7 causes a sufficient amount of cooling water to flow in the cooling region CE and does not flow cooling water in other regions (or, by separately embedding a heater or the like to the extent that quenching does not occur, the mold temperature and ensure a cooling rate that does not cause quenching).
- the molding surfaces of the second component molding section 71 and the third component molding section 72 are not hardened with respect to the second component 51 and the third component 52, while the molding surfaces of the first component molding section 71 and the third component molding section 72 are not hardened.
- the molding surface of 70 is hardened to the first component 50 .
- FIG. 5 is a diagram showing a specific example of the molded product 41.
- FIG. 6 is an enlarged perspective view of the other end of the molded product 41.
- the forming apparatus 1 forms a bumper beam 80 as the first part 50.
- the molding apparatus 1 also molds the crush pipe 81 as the second part 51 and the crush pipe 82 as the third part 52 . Since the elongated bumper beam 80 has a gently curved shape, the molded product 41 has a gently curved shape as a whole. Therefore, the electrode portions 53 and 54 are inclined obliquely downward toward the outer side in the longitudinal direction. Accordingly, the heating and expansion unit 150 tilts the nozzle 31 and the electrodes 26 and 27 according to the tilt of the electrode portions 53 and 54 (see FIG. 2).
- the bumper beam 80 and the crash tube 82 are parts that constitute the front bumper 100 of the vehicle as shown in FIG.
- the front bumper 100 includes a bumper beam 80 extending in the width direction of the vehicle at the front end of the vehicle while being curved to be convex forward.
- the bumper beam 80 is a member that receives the load from the front when the vehicle collides from the front.
- the front bumper 100 includes crash pipes 81 and 82 provided on the rear surface of both ends of the bumper beam 80 in the vehicle width direction.
- the crash pipes 81 and 82 are members that absorb the load by collapsing when the bumper beam receives the load and transmit the load to the frame structure on the rear side of the vehicle.
- the front bumper 100 also includes base plates 83 and 84 provided at the rear ends of the crush pipes 81 and 82 so as to spread vertically.
- the bumper beam 80 includes a front wall portion 80a, a rear wall portion 80b, an upper wall portion 80c, and a lower wall portion 80d. Since the bumper beam 80 is molded by the molding apparatus 1 described above, the materials of the connecting portions of the front wall portion 80a, the rear wall portion 80b, the upper wall portion 80c, and the lower wall portion 80d are continuous without a break. That is, the bumper beam 80 is configured as one part having a closed cross-sectional structure in which the front wall portion 80a, the rear wall portion 80b, the upper wall portion 80c, and the lower wall portion 80d are integrated. A plurality of (here, three) beads 86 are provided at different positions in the vertical direction on the front wall portion 80a. The bead 86 extends in the longitudinal direction of the bumper beam 80, that is, in the vehicle width direction (see FIG. 8).
- the crush pipes 81 and 82 are tubular members extending in the front-rear direction.
- the crush tubes 81, 82 are arranged in such a manner that they are open at the front and rear ends.
- the crush pipes 81, 82 include laterally outer side wall portions 81a, 82a, laterally inner side wall portions 81b, 82b, upper wall portions 81c, 82c, and lower wall portions 81d, 82d. Since the crush pipes 81 and 82 are molded by the molding apparatus 1 described above, the connecting portions of the side wall portions 81a and 82a, the side wall portions 81b and 82b, the upper wall portions 81c and 82c, and the lower wall portions 81d and 82d are made of material.
- the crush pipes 81 and 82 are each constructed as one component with a closed cross-sectional structure in which the side wall portions 81a and 82a, the side wall portions 81b and 82b, the upper wall portions 81c and 82c, and the lower wall portions 81d and 82d are integrated. ing.
- the bumper beam 80 is quenched to set the strength of the material to be high.
- the crash tubes 81 and 82 are not quenched, so that a difference in strength is provided so that the strength of the material is lower than that of the bumper beam 80 . Therefore, the crush tubes 81, 82 can absorb the load by being well crushed.
- the portion corresponding to the end portion of the bumper beam 80 in the vehicle width direction and the portion corresponding to the end portion of the crash pipe 82 in the longitudinal direction face each other in the longitudinal direction. and both are connected by a gradually changing portion 57B.
- the gradually changing portion 57B gradually changes from the shape of the end portion of the bumper beam 80 to the shape of the end portion of the crush pipe 82 .
- a portion corresponding to the end of the crush tube 82 in the front-rear direction and the end of the electrode portion 54 are arranged so as to face each other in the longitudinal direction, and are connected by a gradually changing portion 57A.
- the gradually changing portion 57A gradually changes from the shape of the end portion of the crush tube 82 to the annular shape of the end portion of the electrode portion 54 .
- the opposite end (crush tube 81) of the molded product 41 also adopts a similar structure.
- the molding apparatus 1 is a molding apparatus 1 that heats and hardens the metal pipe material 40 (metal material), and in one molding for one metal pipe material 40, a plurality of parts molding.
- This molding apparatus 1 is a molding apparatus 1 that heats and hardens a metal pipe material 40 for molding.
- the molding apparatus 1 molds a plurality of parts by molding one metal pipe material 40 once. For this reason, the molding apparatus 1 can mold a plurality of parts at once by molding only one metal pipe material 40 once. Therefore, man-hours for manufacturing a plurality of parts can be reduced.
- the molding device 1 is a molding device 1 that performs expansion molding by supplying a fluid to the metal pipe material 40 (metal material), and in one molding for one metal pipe material 40 , molding multiple parts.
- This molding device 1 is a molding device 1 that performs expansion molding by supplying a fluid to the metal pipe material 40 .
- the molding apparatus 1 molds a plurality of parts by molding one metal pipe material 40 once. For this reason, the molding apparatus 1 can mold a plurality of parts at once by molding only one metal pipe material 40 once. Therefore, man-hours for manufacturing a plurality of parts can be reduced.
- the molding device 1 may mold a part having a closed cross section as the part. In this case, the number of parts can be reduced as compared with a structure formed by combining a plurality of parts.
- the molding apparatus 1 may mold, as a plurality of parts, a long first part 50 and a second part 51 and a third part 52 on both sides of the first part 50 in the longitudinal direction.
- the second part 51 and the third part 52 can be added to both sides in the longitudinal direction of the long first part 50 when the first part 50 is formed.
- the molding apparatus 1 may provide a difference in strength between one part and the other part among the plurality of parts. This makes it easier to adjust the strength according to the application of each part.
- the bumper beam 180 is composed of two parts 180a and 180b
- the crash pipe 181 is composed of two members 181a and 181b
- the crash pipe 182 is composed of two members 182a. , 182b.
- These parts are formed by press working, roll forming, or the like from a plate-like metal material.
- each part is assembled by welding or bolting to complete the front bumper 200.
- the forming apparatus 1 of the present embodiment manufactures the component parts of the front bumper 100 according to the example by the STAF (Steel Tube Air Forming: Hot Air Blow Forming) method.
- Bumper beam 80 and crash tubes 81 and 82 are each constructed in one piece. Therefore, the front bumper 100 can be reduced to five parts instead of eight parts in the comparative example, and the number of parts can be greatly reduced.
- the front bumper 200 according to the comparative example after forming by press or roll forming, the parts 180a and 180b subjected to trimming and drilling must be pasted together and spot welded at several tens of locations.
- the front bumper 100 according to the embodiment after the bumper beam 80 is formed, trimming and drilling are completed. This makes it possible to significantly reduce the number of construction man-hours.
- the crush pipes 81 and 82 are also the same.
- the bumper beam 80 and the crash pipes 81 and 82 are formed as a single molded product 41, and these parts can be manufactured by one molding. It has become. Therefore, the molding apparatus 1 can significantly reduce man-hours and labor as compared with the comparative example.
- the front bumper 100 according to the example was evaluated by a strength test.
- the front bumper 100 according to the example and the front bumper 200 according to the comparative example were subjected to static push evaluation by analysis using a testing device 170 indicated by the phantom line in FIG.
- the crush pipes 81 and 82 on both sides were completely fixed, a load was applied to the front surface of the bumper beam 80 by the test device 170, and the strength and energy absorption (EA) were evaluated.
- the results are shown in FIG. With respect to yield strength, the example and the comparative example are almost the same up to a stroke of 120 mm, and the example exhibits a higher yield strength beyond a stroke of 120 mm.
- the EA amount is higher in the example over the entire stroke, and the performance as a front bumper is equal to or better than that of the comparative example. It should be noted that in the example, the number of parts can be reduced by three compared to the comparative example, and the weight can be reduced by 10% while ensuring the same performance as in the comparative example.
- the present disclosure is not limited to the above-described embodiments.
- the overall configuration of the molding apparatus is not limited to that shown in FIG. 1, and can be changed as appropriate without departing from the gist of the disclosure.
- the combination mode of multiple parts is not limited.
- the molding apparatus may mold two parts, a first part and a second part, from one metal material.
- the molding apparatus may mold four or more parts from one metal material.
- rear bumper parts may also be molded.
- the parts molded by the molding apparatus 1 are not limited to components such as front bumpers and rear bumpers, and other parts may be molded.
- the forming apparatus may be a forming apparatus that heats and hardens the metal material, and a forming apparatus using a hot stamping method may be employed.
- the forming apparatus may be a forming apparatus that performs expansion molding by supplying a fluid to the metal material, and a hydroforming method forming apparatus may be employed.
- SYMBOLS 1 Forming apparatus, 40... Metal pipe material (metal material), 50... First part, 51... Second part, 52... Third part, 80... Bumper beam (first part), 81... Crash Tube (second part), 82... Crush tube (third part).
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Fluid Mechanics (AREA)
- Manufacturing & Machinery (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Claims (5)
- 金属材料を加熱し、焼き入れを行う成形装置であって、
一つの前記金属材料に対する一回の成形にて、複数の部品を成形する、成形装置。 - 金属材料に流体を供給することで、膨張成形を行う成形装置であって、
一つの前記金属材料に対する一回の成形にて、複数の部品を成形する、成形装置。 - 前記部品として閉断面を有する部品を成形する、請求項1又は2に記載の成形装置。
- 複数の前記部品として、長尺な第1の部品と、前記第1の部品の長手方向の両側の第2の部品及び第3の部品と、を成形する、請求項1~3の何れか一項に記載の成形装置。
- 複数の前記部品のうち、一の部品と他の部品との間で差強度を設ける、請求項1~4の何れか一項に記載の成形装置。
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023546983A JPWO2023038083A1 (ja) | 2021-09-08 | 2022-09-08 | |
| KR1020247004723A KR20240063105A (ko) | 2021-09-08 | 2022-09-08 | 성형장치 |
| CN202280056259.0A CN117836073A (zh) | 2021-09-08 | 2022-09-08 | 成型装置 |
| EP22867404.0A EP4400228A4 (en) | 2021-09-08 | 2022-09-08 | Molding device |
| CA3226872A CA3226872A1 (en) | 2021-09-08 | 2022-09-08 | Molding device |
| US18/418,187 US20240157427A1 (en) | 2021-09-08 | 2024-01-19 | Molding device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-146105 | 2021-09-08 | ||
| JP2021146105 | 2021-09-08 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18/418,187 Continuation US20240157427A1 (en) | 2021-09-08 | 2024-01-19 | Molding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023038083A1 true WO2023038083A1 (ja) | 2023-03-16 |
Family
ID=85506340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2022/033727 Ceased WO2023038083A1 (ja) | 2021-09-08 | 2022-09-08 | 成形装置 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20240157427A1 (ja) |
| EP (1) | EP4400228A4 (ja) |
| JP (1) | JPWO2023038083A1 (ja) |
| KR (1) | KR20240063105A (ja) |
| CN (1) | CN117836073A (ja) |
| CA (1) | CA3226872A1 (ja) |
| WO (1) | WO2023038083A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025022885A1 (ja) * | 2023-07-25 | 2025-01-30 | 住友重機械工業株式会社 | 成形装置 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08323430A (ja) * | 1995-05-30 | 1996-12-10 | Kawasaki Steel Corp | テーパ管成形用金型 |
| JP2005161402A (ja) * | 2003-11-14 | 2005-06-23 | Suzuki Motor Corp | ハイドロフォーム成形用金型及びハイドロフォーム成形方法 |
| JP2013188793A (ja) | 2012-03-15 | 2013-09-26 | Kyoho Mach Works Ltd | 熱間プレス装置及び熱間プレス方法 |
| JP2015221445A (ja) * | 2014-05-22 | 2015-12-10 | 住友重機械工業株式会社 | 成形装置及び成形方法 |
| JP2018167312A (ja) * | 2017-03-30 | 2018-11-01 | 住友重機械工業株式会社 | 成形装置、及び成形方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2020195579A1 (ja) * | 2019-03-27 | 2020-10-01 | ||
| JP7303718B2 (ja) * | 2019-10-01 | 2023-07-05 | 住友重機械工業株式会社 | 成形装置及びブロー成形用の金属パイプ材料 |
| CA3237328A1 (en) * | 2022-02-17 | 2023-08-24 | Sumitomo Heavy Industries, Ltd. | Molding device |
-
2022
- 2022-09-08 JP JP2023546983A patent/JPWO2023038083A1/ja active Pending
- 2022-09-08 EP EP22867404.0A patent/EP4400228A4/en active Pending
- 2022-09-08 KR KR1020247004723A patent/KR20240063105A/ko active Pending
- 2022-09-08 CA CA3226872A patent/CA3226872A1/en active Pending
- 2022-09-08 CN CN202280056259.0A patent/CN117836073A/zh active Pending
- 2022-09-08 WO PCT/JP2022/033727 patent/WO2023038083A1/ja not_active Ceased
-
2024
- 2024-01-19 US US18/418,187 patent/US20240157427A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08323430A (ja) * | 1995-05-30 | 1996-12-10 | Kawasaki Steel Corp | テーパ管成形用金型 |
| JP2005161402A (ja) * | 2003-11-14 | 2005-06-23 | Suzuki Motor Corp | ハイドロフォーム成形用金型及びハイドロフォーム成形方法 |
| JP2013188793A (ja) | 2012-03-15 | 2013-09-26 | Kyoho Mach Works Ltd | 熱間プレス装置及び熱間プレス方法 |
| JP2015221445A (ja) * | 2014-05-22 | 2015-12-10 | 住友重機械工業株式会社 | 成形装置及び成形方法 |
| JP2018167312A (ja) * | 2017-03-30 | 2018-11-01 | 住友重機械工業株式会社 | 成形装置、及び成形方法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4400228A4 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025022885A1 (ja) * | 2023-07-25 | 2025-01-30 | 住友重機械工業株式会社 | 成形装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CA3226872A1 (en) | 2023-03-16 |
| KR20240063105A (ko) | 2024-05-09 |
| CN117836073A (zh) | 2024-04-05 |
| EP4400228A1 (en) | 2024-07-17 |
| US20240157427A1 (en) | 2024-05-16 |
| JPWO2023038083A1 (ja) | 2023-03-16 |
| EP4400228A4 (en) | 2025-03-12 |
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