WO2016009854A1 - 成形装置及び成形方法 - Google Patents
成形装置及び成形方法 Download PDFInfo
- Publication number
- WO2016009854A1 WO2016009854A1 PCT/JP2015/069226 JP2015069226W WO2016009854A1 WO 2016009854 A1 WO2016009854 A1 WO 2016009854A1 JP 2015069226 W JP2015069226 W JP 2015069226W WO 2016009854 A1 WO2016009854 A1 WO 2016009854A1
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- WIPO (PCT)
- Prior art keywords
- mold
- flange
- cavity
- molding
- metal pipe
- Prior art date
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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
- B21D26/035—Deforming tubular bodies including an additional treatment performed by fluid pressure, e.g. perforating
-
- 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
- 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
- B21D26/043—Means for controlling the axial pusher
-
- 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
- B21D26/047—Mould construction
Definitions
- the present invention relates to a molding apparatus and a molding method.
- a forming apparatus for forming a metal pipe having a pipe part and a flange part by supplying a gas into a heated metal pipe material and expanding it.
- a molding apparatus shown in Patent Document 1 includes an upper mold and a lower mold that are paired with each other, a gas supply unit that supplies gas into a metal pipe material held between the upper mold and the lower mold, and the upper mold And a first cavity part (main cavity) for molding the pipe part, and a second cavity part (subcavity) for communicating with the first cavity part and molding the flange part.
- the pipe part and the flange part can be simultaneously molded by closing the molds and supplying gas into the metal pipe material to expand the metal pipe material.
- the flange portion formed by the forming apparatus is formed by folding and crushing a part of the metal pipe material that has expanded and advanced into the second cavity portion between the upper die and the lower die. Therefore, the thickness of the flange portion is larger than the thickness of the pipe portion. For this reason, depending on the thickness of the metal pipe material and the degree of quenching, there is a problem that it becomes difficult to weld the flange portion to other parts. For example, in spot welding, it is necessary to increase the flowing current as the thickness of the flange part and other parts to be welded increases. Therefore, there is a problem that welding failure occurs depending on the thickness of the flange part.
- An object of one embodiment of the present invention is to provide a molding apparatus and a molding method capable of molding a flange portion having a desired thickness while suppressing a decrease in strength of a molded product.
- a molding apparatus for molding a metal pipe having a pipe portion and a flange portion includes a metal pipe material held and heated between a pair of first and second molds.
- a gas supply unit for supplying gas, a drive mechanism for moving at least one of the first mold and the second mold in a direction in which the molds are combined, and the first mold and the second mold A first cavity part for forming the pipe part, a second cavity part for communicating with the first cavity part and for forming a flange part, and the second cavity part can be moved forward and backward.
- At least one of the first mold and the second mold that are paired with each other moves in a direction in which the molds are brought together by the control of the drive mechanism by the control unit.
- a cavity part and a second cavity part communicating with the first cavity part are formed.
- gas is supplied from the gas supply unit to the first cavity by controlling the gas supply unit by the control unit into the heated metal pipe material held between the first mold and the second mold.
- the pipe part of the metal pipe can be formed in the part, and the flange part of the metal pipe can be formed in the second cavity part.
- the flange forming member can be advanced in the second cavity by the control of the flange forming member by the control unit, and the formed flange can be crushed.
- the thickness of the flange portion can be adjusted to be thin without reducing the thickness of the metal pipe material. Therefore, according to the said shaping
- the flange forming member is provided on at least one of the first mold and the second mold.
- the flange forming member provided on the mold can also be replaced together. For this reason, the time required for replacement
- the first cavity is moved by moving at least one of the first mold and the second mold in a direction in which the molds are combined with each other by the driving mechanism.
- the pipe portion is formed in the first cavity portion by forming the portion and the second cavity portion between the first mold and the second die and supplying gas into the metal pipe material by the gas supply portion.
- the second cavity portion is formed with a flange portion, and the flange portion is crushed by a flange forming member.
- the first mold and the second mold is moved by the driving mechanism in a direction in which the molds are joined together, and the first cavity part and the second cavity part are moved to the first cavity part.
- a gas pipe is formed between the first mold and the second mold, and gas is supplied into the metal pipe material by the gas supply unit, and the pipe part of the metal pipe is formed in the first cavity part and the second cavity is formed.
- the flange part of a metal pipe can be shape
- the flange portion it is preferable to crush the flange portion so that the thickness of the flange portion is thinner than the thickness of the pipe portion.
- the flange portion and other parts can be favorably welded.
- the flange portion is crushed by the flange forming member, it is preferable to supply gas into the pipe portion by the gas supply portion. In this case, it can suppress that a part of crushed flange part penetrate
- pressing of the flange portion by the flange forming member is started in parallel with the forming of the pipe portion.
- the time for forming the metal pipe having the flange portion having a desired thickness can be shortened.
- a molding method for molding a metal molded article having a main body portion and a flange portion wherein a heated metal article is prepared between a first mold and a second mold, By moving at least one of the mold and the second mold in the direction in which the molds are combined, the first cavity part and the second cavity part communicating with the first cavity part are changed to the first mold and It is formed between the second molds, and the main body part and the flange part are formed in the first cavity part, and the inside of the second cavity part can be advanced and retracted, and the flange part is formed.
- the flange portion is crushed by the flange forming member.
- the first mold and the second mold is moved in a direction in which the molds are combined with each other, thereby communicating with the first cavity part and the first cavity part.
- a second cavity portion is formed between the first mold and the second mold.
- the main body part of the metal molded product is formed in the first cavity part, and the second A flange portion of a metal molded product can be formed in the cavity portion.
- the thickness of the flange portion can be adjusted to be thin by crushing the flange portion with a flange forming member capable of moving forward and backward in the second cavity portion. Therefore, according to the said shaping
- a molding device and a molding method capable of suppressing a decrease in strength of a molded product and molding a flange portion having a desired thickness.
- FIG. 1 is a schematic configuration diagram of a molding apparatus.
- FIG. 2 is a view in which an oil supply pump connected to the blow molding die is added to the cross-sectional view of the blow molding die along the line II-II shown in FIG. 3A and 3B are enlarged views of the periphery of the electrode, wherein FIG. 3A is a view showing a state where the electrode holds the metal pipe material, FIG. 3B is a view showing a state where the seal member is in contact with the electrode, and FIG. FIG. 3 is a front view of an electrode.
- 4A and 4B are diagrams showing a manufacturing process by a molding apparatus, where FIG. 4A shows a state in which a metal pipe material is set in a mold, and FIG.
- FIG. 4B shows a state in which the metal pipe material is held by an electrode.
- FIG. FIG. 5 is a diagram showing a blow molding process by the molding apparatus and the subsequent flow.
- FIG. 6 is a diagram showing the operation of the blow molding die and the change in the shape of the metal pipe material
- (a) is a diagram showing a state in which the metal pipe material is set in the blow molding die
- (b) is a blow molding. It is a figure which shows the state which closed the metal mold
- FIG. 7 is a view showing the operation of the blow molding die and the change in the shape of the metal pipe material following FIG. 6, (a) is a view showing a state at the time of blow molding, and (b) is a flange by pressing of the piston.
- FIG. 8 is a diagram showing another example of the operation of the blow molding die and the change in the shape of the metal pipe material
- (a) is a diagram showing a state in which the metal pipe material is set in the blow molding die
- (a) is a view showing a state in which blow molding is performed while closing the blow mold
- FIG. 9 is a view showing another example of the operation of the blow molding die and the change in the shape of the metal pipe material following FIG. 8, and
- (a) is a view showing a state in which the blow molding die is closed.
- FIG. 10 is a schematic cross-sectional view showing another example of a blow molding die and a slide.
- FIG. 1 is a schematic configuration diagram of a molding apparatus.
- a molding apparatus 10 that molds a metal pipe 100 includes a blow mold including an upper mold (first mold) 12 and a lower mold (second mold) 11.
- a driving mechanism 80 that moves at least one of the mold 13, the upper mold 12 and the lower mold 11, a pipe holding mechanism (holding section) 30 that holds the metal pipe material 14 between the upper mold 12 and the lower mold 11,
- a heating mechanism (heating unit) 50 that energizes and heats the metal pipe material 14 held by the pipe holding mechanism 30 and a high pressure in the heated metal pipe material 14 held between the upper mold 12 and the lower mold 11.
- a gas supply unit S that supplies gas (gas), an oil supply pump 90 that supplies oil to a cylinder 93 (see FIG. 2) in the upper mold 12, and a water circulation mechanism 72 that forcibly water-cools the blow mold 13.
- the drive mechanism 80 above Pipe holding mechanism 30, the heating mechanism 50 is configured to include the gas supply unit S, and a control unit 70 for controlling the operation of the oil supply pump 90, a.
- the gas supply unit S supplies a gas to the pair of gas supply mechanisms 40, 40 that supply gas into the metal pipe material 14 held by the pipe holding mechanism 30, and the pair of gas supply mechanisms 40, 40. And a blow mechanism 60.
- the lower mold (second mold) 11 is fixed to a large base 15.
- the lower mold 11 is composed of a large steel block and includes a cavity (concave portion) 16 on the upper surface thereof. Further, an electrode storage space 11a is provided in the vicinity of the left and right ends of the lower mold 11 (left and right ends in FIG. 1).
- the molding apparatus 10 includes a first electrode 17 and a second electrode 18 that are configured to be movable up and down by an actuator (not shown) in the electrode storage space 11a.
- semicircular arc-shaped concave grooves 17a and 18a corresponding to the lower outer peripheral surface of the metal pipe material 14 are formed, respectively (see FIG. 3C).
- the metal pipe material 14 can be placed so as to fit into the concave grooves 17a and 18a.
- a tapered concave surface 17b is formed on the front surface (surface in the outer side of the mold) of the first electrode 17 so that the periphery thereof is inclined in a tapered shape toward the concave groove 17a, and the front surface of the second electrode 18 is formed.
- a taper concave surface 18b is formed on the outer surface of the mold.
- the lower mold 11 is provided with a cooling water passage 19 and is provided with a thermocouple 21 inserted from below at a substantially central position.
- the thermocouple 21 is supported by a spring 22 so as to be movable up and down.
- the pair of first and second electrodes 17 and 18 located on the lower mold 11 side constitute a pipe holding mechanism 30, and the metal pipe material 14 can be moved up and down between the upper mold 12 and the lower mold 11. Can support you.
- the thermocouple 21 is merely an example of a temperature measuring unit, and may be a non-contact temperature sensor such as a radiation thermometer or an optical thermometer. If a correlation between the energization time and the temperature can be obtained, the temperature measuring means can be omitted and configured sufficiently.
- the upper mold (first mold) 12 is a large steel block having a cavity (recess) 24 on the lower surface and a cooling water passage 25 built therein.
- the upper mold 12 has an upper end fixed to the slide 82.
- the slide 82 to which the upper die 12 is fixed is configured to be suspended by the pressure cylinder 26 and is guided by the guide cylinder 27 so as not to sway laterally.
- the molding apparatus 10 includes a first electrode 17 and a second electrode 18 that can be moved up and down by an actuator (not shown) in the electrode housing space 12a in the same manner as the lower mold 11.
- the lower surfaces of the first and second electrodes 17 and 18 are respectively formed with semicircular arc-shaped concave grooves 17a and 18a corresponding to the upper outer peripheral surface of the metal pipe material 14 (see FIG. 3C).
- the metal pipe material 14 can be fitted into the concave grooves 17a and 18a.
- the front surface of the first electrode 17 (surface in the outer direction of the mold) is formed with a tapered concave surface 17b whose periphery is inclined in a tapered shape toward the concave groove 17a, and the front surface of the second electrode 18 ( A taper concave surface 18b is formed on the outer surface of the mold). Therefore, the pair of first and second electrodes 17 and 18 located on the upper mold 12 side also constitute the pipe holding mechanism 30, and the metal pipe material 14 is moved up and down by the pair of upper and lower first and second electrodes 17 and 18. When sandwiched from the direction, the outer circumference of the metal pipe material 14 can be surrounded so as to be in close contact with the entire circumference.
- the drive mechanism 80 includes a slide 82 that moves the upper mold 12 so that the upper mold 12 and the lower mold 11 are aligned with each other, a drive unit 81 that generates a drive force for moving the slide 82, and the drive unit 81. And a servo motor 83 for controlling the amount of fluid.
- the drive unit 81 is configured by a fluid supply unit that supplies a fluid for driving the pressure cylinder 26 (operating oil when a hydraulic cylinder is used as the pressure cylinder 26) to the pressure cylinder 26.
- the control unit 70 can control the movement of the slide 82 by controlling the amount of fluid supplied to the pressurizing cylinder 26 by controlling the servo motor 83 of the driving unit 81.
- the drive part 81 is not restricted to what provides a drive force to the slide 82 via the pressurization cylinder 26 as mentioned above.
- the drive unit 81 may mechanically connect a drive mechanism to the slide 82 and apply the drive force generated by the servo motor 83 directly or indirectly to the slide 82.
- an eccentric shaft For example, an eccentric shaft, a drive source (for example, a servo motor and a reducer) that applies a rotational force that rotates the eccentric shaft, and a conversion unit that converts the rotational motion of the eccentric shaft into a linear motion and moves the slide (for example, Or a connecting rod or an eccentric sleeve).
- the drive unit 81 may not include the servo motor 83.
- FIG. 2 is a view in which an oil supply pump 90 connected to the blow molding die 13 is added to the cross-sectional view of the blow molding die 13 taken along the line II-II shown in FIG. As shown in FIG. 2, both the upper surface of the lower mold 11 and the lower surface of the upper mold 12 are provided with steps.
- a step is formed on the upper surface of the lower mold 11 by the first recess 11b, the first protrusion 11c, and the second protrusion 11d.
- a first recess 11b is formed on the right side (right side in FIG. 2) of the cavity 16, and a first protrusion 11c and a second protrusion 11d are formed on the left side (left side in FIG. 2) of the cavity 16.
- the first protrusion 11c is located between the cavity 16 and the second protrusion 11d. The first protrusion 11c protrudes closer to the upper mold 12 than the second protrusion 11d.
- a step is formed on the lower surface of the upper mold 12 by the first protrusion 12b and the second protrusion 12c.
- a first protrusion 12b that protrudes most on the right side (right side in FIG. 2) of the cavity 24 is formed, and a second protrusion 12c is formed on the left side (left side in FIG. 2) of the cavity 24.
- An opening 12d is provided between the cavity 24 and the second protrusion 12c.
- a flange forming member that can advance and retract along the direction in which the lower mold 11 and the upper mold 12 face each other in the opening 12d, and forms a flange 100c (see FIG. 7B) of the metal pipe 100 described later.
- a piston 94 (described later in detail) is inserted.
- the upper mold 12 has a cylinder 93 provided therein and filled with operating oil, and a piston 94 slidable in the cylinder 93.
- the inside of the cylinder 93 is partitioned into a lower region 93a and an upper region 93b by a base end portion 94b provided at one end (the upper end in FIG. 2) of the piston 94.
- the front end surface 94c of the main body portion 94a below the base end portion 94b of the piston 94 is exposed and protrudes downward from the upper mold 12 and faces the first protrusion 11c of the lower mold 11.
- the cylinder 93 is connected to the oil supply pump 90 described above via a pipe 91 connected to the lower region 93a and a pipe 92 connected to the upper region 93b.
- the control unit 70 can control the amount of fluid supplied to the lower region 93a and the upper region 93b of the cylinder 93 by controlling the oil supply pump 90, and can control the movement of the piston 94. For example, under the control of the oil supply pump 90 by the control unit 70, the operating oil is supplied into the upper region 93b, the operating oil filled in the lower region 93a is discharged, and the piston 94 is advanced to the lower mold 11 side. be able to.
- first protrusion 12b of the upper mold 12 can be just fitted with the first recess 11b of the lower mold 11.
- the second protrusion 12c of the upper mold 12 and the second protrusion 11d of the lower mold 11 come into contact with each other when the upper mold 12 and the lower mold 11 are fitted.
- a space is formed between the front end surface 94c of the piston 94 attached to the upper mold 12 and the first protrusion 11c of the lower mold 11 when the upper mold 12 and the lower mold 11 are fitted.
- a space is formed between the cavity 24 of the upper mold 12 and the cavity 16 of the lower mold 11 when the upper mold 12 and the lower mold 11 are fitted.
- the main cavity portion MC is a portion for forming the pipe portion 100a in the metal pipe 100
- the sub-cavity portion SC is a portion for forming the flange portions 100b and 100c in the metal pipe 100 (see FIGS. 7A and 7B). ).
- the heating mechanism 50 includes a power source 51, a lead wire 52 extending from the power source 51 and connected to the first electrode 17 and the second electrode 18, and a switch interposed in the lead wire 52. 53.
- the control unit 70 can heat the metal pipe material 14 to the quenching temperature (AC3 transformation point temperature or higher) by controlling the heating mechanism 50.
- Each of the pair of gas supply mechanisms 40 in the gas supply unit S is connected to a cylinder unit 42, a cylinder rod 43 that moves forward and backward in accordance with the operation of the cylinder unit 42, and a tip of the cylinder rod 43 on the pipe holding mechanism 30 side. And a sealing member 44.
- the cylinder unit 42 is mounted and fixed on the base 15 via a block 41.
- a tapered surface 45 is formed at the tip of each sealing member 44 so as to be tapered.
- One tapered surface 45 is configured to be able to be fitted and abutted with the tapered concave surface 17 b of the first electrode 17, and the other tapered surface 45 is just fitted to the tapered concave surface 18 b of the second electrode 18. It is comprised in the shape which can touch (refer FIG.
- the seal member 44 extends from the cylinder unit 42 side toward the tip. Specifically, as shown in FIGS. 3A and 3B, a gas passage 46 and an exhaust passage 48 through which the high-pressure gas supplied from the blow mechanism 60 flows are provided. That is, the pair of gas supply mechanisms 40, 40 are connected to the blow mechanism 60.
- the blow mechanism 60 in the gas supply unit S includes a high-pressure gas source 61, an accumulator 62 that stores the high-pressure gas supplied by the high-pressure gas source 61, and a first extending from the accumulator 62 to the cylinder unit 42 of the gas supply mechanism 40.
- the second tube 67 includes an on / off valve 68 and a check valve 69.
- the pressure control valve 64 serves to supply the cylinder unit 42 with a high-pressure gas having an operating pressure adapted to the pressing force required from the seal member 44 side.
- the check valve 69 serves to prevent the high pressure gas from flowing back in the second tube 67.
- the control unit 70 can supply a high-pressure gas, which is a gas, into the metal pipe material 14 by controlling the pair of gas supply mechanisms 40 and 40 and the blow mechanism 60 of the gas supply unit S.
- a high-pressure gas which is a gas
- the control unit 70 acquires temperature information from the thermocouple 21 by transmitting information from (A), and controls the pressurizing cylinder 26, the switch 53, and the like.
- the water circulation mechanism 72 includes a water tank 73 that stores water, a water pump 74 that pumps up the water stored in the water tank 73, pressurizes the water, and sends it to the cooling water passage 19 of the lower mold 11 and the cooling water passage 25 of the upper mold 12; It consists of a pipe 75. Although omitted, a cooling tower for lowering the water temperature and a filter for purifying water may be interposed in the pipe 75.
- FIG. 4 shows a process from a pipe feeding process in which the metal pipe material 14 as a material is fed to an energization heating process in which the metal pipe material 14 is energized and heated.
- a hardened metal pipe material 14 of a steel type is prepared.
- the metal pipe material 14 is placed (introduced) on the first and second electrodes 17 and 18 provided on the lower mold 11 side using, for example, a robot arm or the like. Since the concave grooves 17a and 18a are formed in the first and second electrodes 17 and 18, respectively, the metal pipe material 14 is positioned by the concave grooves 17a and 18a.
- the control unit 70 controls the pipe holding mechanism 30 to cause the pipe holding mechanism 30 to hold the metal pipe material 14.
- an actuator (not shown) that allows the first electrode 17 and the second electrode 18 to move forward and backward is operated, and the first and second electrodes 17 positioned above and below each other. , 18 are brought into close contact with each other. By this contact, both ends of the metal pipe material 14 are sandwiched by the first and second electrodes 17 and 18 from above and below. Further, this clamping is performed in such a manner that the metal pipe material 14 is in close contact with each other due to the presence of the concave grooves 17a and 18a formed in the first and second electrodes 17 and 18, respectively. .
- the configuration is not limited to the configuration in which the metal pipe material 14 is in close contact with the entire circumference, and may be a configuration in which the first and second electrodes 17 and 18 are in contact with a part of the metal pipe material 14 in the circumferential direction. .
- the controller 70 heats the metal pipe material 14 by controlling the heating mechanism 50. Specifically, the control unit 70 turns on the switch 53 of the heating mechanism 50. If it does so, electric power will be supplied to the metal pipe material 14 from the power supply 51, and metal pipe material 14 itself heat
- FIG. 5 shows the blow molding process by the molding apparatus and the subsequent flow.
- the blow molding die 13 is closed with respect to the heated metal pipe material 14, and the metal pipe material 14 is disposed and sealed in the cavity of the blow molding die 13.
- the cylinder unit 42 of the gas supply mechanism 40 is operated to seal both ends of the metal pipe material 14 with the seal member 44 (see also FIG. 3).
- high-pressure gas is blown into the metal pipe material 14 to deform the metal pipe material 14 softened by heating so as to follow the shape of the cavity.
- the metal pipe material 14 is softened by being heated to a high temperature (around 950 ° C.), and can be blow-molded at a relatively low pressure. Specifically, when compressed air at normal temperature (25 ° C.) at 4 MPa is adopted as the high-pressure gas, the compressed air is eventually heated to around 950 ° C. in the sealed metal pipe material 14. The compressed air expands thermally and reaches about 16-17 MPa based on Boyle-Charles' law. That is, the metal pipe material 14 at 950 ° C. can be easily expanded by the thermally expanded compressed air to obtain the metal pipe 100.
- the outer peripheral surface of the metal pipe material 14 swelled by blow molding is brought into contact with the cavity 16 of the lower mold 11 and rapidly cooled, and at the same time is brought into contact with the cavity 24 of the upper mold 12 to rapidly cool (the upper mold 12 and the lower mold 11 are Since the heat capacity is large and the temperature is controlled at a low temperature, if the metal pipe material 14 comes into contact, the heat of the pipe surface is taken away to the mold side at once, and quenching is performed.
- Such a cooling method is called mold contact cooling or mold cooling. Immediately after being quenched, austenite transforms into martensite.
- cooling is performed by supplying a cooling medium to the metal pipe 100 instead of or in addition to mold cooling.
- FIGS. 6A and 6B and FIGS. 7A and 7B an example of a specific molding state by the upper mold 12 and the lower mold 11 will be described in detail.
- the metal pipe material 14 is held between the upper mold 12 and the lower mold 11 and on the cavity 16.
- the upper die 12 is moved by the drive mechanism 80, and the upper die 12 and the lower die 11 are completely closed (clamped) as shown in FIG. 6B.
- the main cavity portion MC is formed between the surface of the cavity 24 at the reference line LV1 and the surface of the cavity 16 at the reference line LV2.
- a subcavity SC is formed between the tip end surface 94 c of the piston 94 provided on the upper mold 12 and the first protrusion 11 c of the lower mold 11.
- the main cavity part MC and the sub cavity part SC are in communication with each other. Further, the main cavity portion MC and the subcavity portion SC are sealed by the upper mold 12 and the lower mold 11.
- the pipe portion 100a of the metal pipe 100 is formed in the main cavity portion MC
- the flange portion 100b of the metal pipe 100 is formed in the sub-cavity portion SC.
- the flange portion 100 b is formed by folding a part of the metal pipe material 14 along the longitudinal direction of the metal pipe 100.
- the main cavity portion MC is configured to have a rectangular cross section. Therefore, the pipe portion 100a has a rectangular cylindrical shape by blow molding the metal pipe material 14 in accordance with the shape. Molded.
- the shape of the main cavity portion MC is not particularly limited, and any shape such as a circular cross section, an elliptical cross section, or a polygonal cross section may be employed in accordance with a desired shape.
- the flange portion 100b has no space in its folded portion by adjusting in advance the distance in the vertical direction between the tip surface 94c of the piston 94 constituting the sub-cavity portion SC and the first protrusion 11c of the lower mold 11 Molded with.
- the oil supply pump 90 controlled by the control unit 70 supplies the operating oil to the upper region 93 b through the pipe 92, and the lower side through the pipe 91.
- the piston 94 is advanced into the subcavity SC.
- the piston 94 is advanced into the subcavity SC by the control unit 70 and the oil supply pump 90 to crush the flange 100b, thereby forming the thinned flange 100c.
- the thickness of the flange portion 100c is thinner than the thickness of the pipe portion 100a.
- the gas supply into the pipe portion 100a by the gas supply portion S is continued.
- the time from the blow molding of the metal pipe material 14 to the completion of the molding of the metal pipe 100 is completed in about several seconds although it depends on the type of the metal pipe material 14.
- the upper mold 12 of the blow mold 13 that is paired with each other is moved in a direction in which the upper mold 12 and the lower mold 11 are brought together by the control of the drive mechanism 80 by the control unit 70.
- the main cavity part MC and the sub cavity part SC communicating with the main cavity part MC are formed.
- gas is supplied from the gas supply unit S to the main cavity portion by the control of the gas supply unit S by the control unit 70 in the metal pipe material 14 held and heated between the upper mold 12 and the lower mold 11.
- the pipe portion 100a of the metal pipe 100 can be formed in the MC, and the flange portion 100b of the metal pipe 100 can be formed in the subcavity portion SC.
- the control of the piston 94 which is a flange forming member by the control unit 70, allows the piston 94 to move forward in the subcavity portion SC and crush the formed flange portion 100b. Accordingly, the flange portion 100c adjusted to be thin can be formed without reducing the thickness of the metal pipe material 14. Therefore, according to the said shaping
- the piston 94 is provided on the upper mold 12. Therefore, when the upper mold 12 and the lower mold 11 are exchanged to change the shape of the metal pipe 100 to be molded, the piston 94 provided on the upper mold 12 can be exchanged together. For this reason, the time required for exchanging the upper mold 12, the lower mold 11, and the piston 94 can be reduced.
- the upper mold 12 is moved in the direction in which the blow molding die 13 is brought together by the drive mechanism 80, and the main cavity part MC and the sub cavity part SC are moved.
- gas is supplied in the metal pipe material 14 with the gas supply part S
- the pipe part 100a of the metal pipe 100 is shape
- the flange portion 100b of the metal pipe 100 can be formed in the SC.
- the flange portion 100c can be crushed so that the thickness of the flange portion 100c is thinner than the thickness of the pipe portion 100a. For this reason, welding with the flange part 100c and other components can be performed favorably.
- the forming method of the metal pipe 100 described below is the forming method of the metal pipe 100 described with reference to FIGS. 6A, 6B, 7A, and 7B.
- the difference is that the gas pipe material 14 expands due to the gas supply into the metal pipe material 14 and protrudes between the first projection 11c of the lower mold 11 and the tip end surface 94c of the piston 94, and the protruding portion 14b of the metal pipe material 14 ( FIG. 8B is a point where the piston 94 is crushed while the upper die 12 and the lower die 11 are closed.
- the piston 94 starts to press the protrusion 14b.
- the pressing by the piston 94 is started after the lower surface of the first protrusion 12b of the upper mold 12 is positioned below the upper surface of the first protrusion 11c of the lower mold 11.
- the pipe portion 100a of the metal pipe 100 and the flange portion 100b are thinner.
- the formed flange portion 100x can be formed.
- the flange portion 100c having the same thickness as described above can be formed (see FIG. 9B).
- the metal pipe 100 having the flange portion 100c having a desired thickness is started by pressing the protrusion 14b (or the flange portion 100x) by the piston 94 in parallel with the molding of the pipe portion 100a of the metal pipe 100.
- the time for molding 100 can be shortened.
- the present invention is not limited to the above embodiment.
- the forming apparatus 1 in the above embodiment does not necessarily have the heating mechanism 50, and the metal pipe material 14 may already be heated.
- the main cavity portion MC and the subcavity portion SC are formed by fitting the upper mold 12 and the lower mold 11, but are not limited thereto.
- the main cavity portion MC may be formed between the surface of the cavity 16 of the lower mold 11 and the surface of the cavity 24 of the upper mold 12 with a gap between the upper mold 12 and the lower mold 11.
- the sub-cavity portion SC may be formed between the first protrusion 11c of the lower mold 11 and the front end surface 94c of the main body portion 94a of the piston 94.
- the drive mechanism 80 moves only the upper mold 12, but the lower mold 11 may move in addition to the upper mold 12 or instead of the upper mold 12. .
- the lower mold 11 moves, the lower mold 11 is not fixed to the base 15 but attached to the slide of the drive mechanism 80.
- the cylinder 93 and the piston 94 according to the present embodiment are provided in the upper mold 12, but are not limited thereto, and may be provided in at least one of the upper mold and the lower mold 11. .
- a slide 82 installed on the upper surface of the upper mold 12 incorporates a cylinder 93, a piston 94 is disposed in the cylinder 93, and a front end surface of a main body portion 94 a of the piston 94.
- 94 c may penetrate the slide 82 and the upper mold 12 and may be exposed and protruded from the upper mold 12 to face the first protrusion 11 c of the lower mold 11.
- the cylinder 93 and the piston 94 may be provided on the slide of the lower mold 11.
- the piston 94 which is a flange forming member according to the present embodiment may be configured to advance and retract by an actuator instead of the configuration to advance and retract by hydraulic pressure by the oil supply pump 90 and the cylinder 93.
- members other than the piston 94 may be used as the flange forming member according to the present embodiment.
- the molding apparatus 10 may not include the oil supply pump 90, the cylinder 93, and the like, and may include members necessary for using members other than the piston 94.
- the flange forming member may be provided by dividing the upper mold into two.
- one upper mold may be supported by the other upper mold and moved forward and backward by a moving mechanism such as a pump.
- one upper mold may be in sliding contact with the other upper mold.
- the lower mold may be divided into two.
- the upper mold and the lower mold may be divided into three or more.
- the metal pipe 100 according to the present embodiment may have flange portions on both sides thereof.
- each of the flange portions on both sides is crushed by the piston provided on at least one of the upper mold 12 and the lower mold 11.
- the forming apparatus 1 may be a device that forms a metal object other than the metal pipe material 14.
- a heated metal object is prepared between a pair of molding dies (first mold and second mold).
- the first cavity portion and the second cavity portion communicating with the first cavity portion are moved to the pair of molding dies.
- a body portion of the metal molding is formed in the first cavity portion, and a flange portion of the metal molding is formed in the second cavity portion.
- the flange portion may be crushed by a flange forming member such as a piston capable of moving back and forth in the second cavity portion. Even in this case, it is possible to form a flange portion having a desired thickness while suppressing a decrease in strength of the metal molded product.
- the metal object include a metal plate and a metal rod.
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Abstract
Description
図1は、成形装置の概略構成図である。図1に示されるように、金属パイプ100(図5参照)を成形する成形装置10は、上型(第1の金型)12及び下型(第2の金型)11からなるブロー成形金型13と、上型12及び下型11の少なくとも一方を移動させる駆動機構80と、上型12と下型11との間で金属パイプ材料14を保持するパイプ保持機構(保持部)30と、パイプ保持機構30で保持されている金属パイプ材料14に通電して加熱する加熱機構(加熱部)50と、上型12及び下型11の間に保持され加熱された金属パイプ材料14内に高圧ガス(気体)を供給する気体供給部Sと、上型12内のシリンダ93(図2参照)に油を供給する油供給ポンプ90と、ブロー成形金型13を強制的に水冷する水循環機構72とを備えると共に、上記駆動機構80、上記パイプ保持機構30、上記加熱機構50、上記気体供給部S、及び上記油供給ポンプ90の動作を制御する制御部70と、を備えて構成されている。なお、気体供給部Sは、パイプ保持機構30で保持された金属パイプ材料14内に気体を供給する一対の気体供給機構40,40と、当該一対の気体供給機構40,40に気体を供給するブロー機構60とを備えている。
次に、成形装置1の作用について説明する。図4は材料としての金属パイプ材料14を投入するパイプ投入工程から、金属パイプ材料14に通電して加熱する通電加熱工程までを示す。最初に焼入れ可能な鋼種の金属パイプ材料14を準備する。図4(a)に示すように、この金属パイプ材料14を、例えばロボットアーム等を用いて、下型11側に備わる第1,第2電極17,18上に載置(投入)する。第1,第2電極17,18には凹溝17a,18aがそれぞれ形成されているので、当該凹溝17a,18aによって金属パイプ材料14が位置決めされる。次に、制御部70(図1参照)は、パイプ保持機構30を制御することによって、当該パイプ保持機構30に金属パイプ材料14を保持させる。具体的には、図4(b)のように、第1電極17、第2電極18を進退動可能としているアクチュエータ(図示しない)を作動させ、各上下に位置する第1,第2電極17,18を接近・当接させる。この当接によって、金属パイプ材料14の両方の端部は、上下から第1,第2電極17,18によって挟持される。また、この挟持は第1,第2電極17,18にそれぞれ形成される凹溝17a,18aの存在によって、金属パイプ材料14の全周に渡って密着するような態様で挟持されることとなる。ただし、金属パイプ材料14の全周に渡って密着する構成に限られず、金属パイプ材料14の周方向における一部に第1,第2電極17,18が当接するような構成であってもよい。
Claims (7)
- パイプ部及びフランジ部を有する金属パイプを成形する成形装置であって、
互いに対となる第1の金型及び第2の金型の間に保持され加熱された金属パイプ材料内に気体を供給する気体供給部と、
前記第1の金型及び前記第2の金型の少なくとも一方を、金型同士が合わさる方向に移動させる駆動機構と、
前記第1の金型及び前記第2の金型の間に形成され、前記パイプ部を成形するための第1のキャビティ部、及び前記第1のキャビティ部と連通し前記フランジ部を成形するための第2のキャビティ部と、
前記第2のキャビティ部内を進退可能であり、前記フランジ部を成形するフランジ成形部材と、
前記気体供給部の気体供給、前記駆動機構の駆動、及び前記フランジ成形部材の進退をそれぞれ制御する制御部と、
を備えた、成形装置。 - 前記フランジ成形部材は、前記第1の金型及び前記第2の金型の少なくとも一方に設けられている、請求項1記載の成形装置。
- 請求項1又は2記載の成形装置を用いた金属パイプの成形方法であって、
前記駆動機構により前記第1の金型及び前記第2の金型の少なくとも一方を金型同士が合わさる方向に移動させることによって、前記第1のキャビティ部及び前記第2のキャビティ部を前記第1の金型及び前記第2の金型の間に形成すると共に、前記気体供給部により前記金属パイプ材料内に気体を供給することによって、前記第1のキャビティ部内に前記パイプ部、及び前記第2のキャビティ部内に前記フランジ部をそれぞれ成形し、
前記フランジ成形部材により前記フランジ部を押しつぶす、成形方法。 - 前記フランジ部の厚さを前記パイプ部の厚さよりも薄くなるように前記フランジ部を押しつぶす、請求項3記載の成形方法。
- 前記フランジ成形部材によって前記フランジ部を押しつぶす際に、前記気体供給部によって前記パイプ部内に気体を供給する、請求項3又は4記載の成形方法。
- 前記パイプ部の成形と並行して、前記フランジ成形部材による前記フランジ部の押圧が開始される、請求項3~5のいずれか一項記載の成形方法。
- 本体部及びフランジ部を有する金属成形物を成形する成形方法であって、
加熱された金属物を、第1の金型及び第2の金型の間に準備し、
前記第1の金型及び前記第2の金型の少なくとも一方を金型同士が合わさる方向に移動させることによって、第1のキャビティ部及び前記第1のキャビティ部に連通する第2のキャビティ部を前記第1の金型及び前記第2の金型の間に形成すると共に、前記第1のキャビティ部内に前記本体部、及び前記第2のキャビティ部内に前記フランジ部をそれぞれ成形し、
前記第2のキャビティ部内を進退可能であり、前記フランジ部を成形するフランジ成形部材によって前記フランジ部を押しつぶす、成形方法。
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CA3051189A1 (en) * | 2017-03-21 | 2018-09-27 | Sumitomo Heavy Industries, Ltd. | Forming system and forming method |
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JP7469221B2 (ja) * | 2018-03-09 | 2024-04-16 | 住友重機械工業株式会社 | 成形装置、及び金属パイプ |
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CA3126225C (en) * | 2019-03-05 | 2023-08-08 | Sumitomo Heavy Industries, Ltd. | Metal pipe molding method, metal pipe, and molding system |
CN110834047B (zh) * | 2019-11-21 | 2020-12-29 | 大连理工大学 | 一种大尺寸薄壁管件气液混合流体内压成形方法 |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001259754A (ja) * | 2000-01-14 | 2001-09-25 | Sumitomo Metal Ind Ltd | 液圧バルジ加工部品の成形方法、金型および液圧バルジ加工部品 |
JP2006061944A (ja) * | 2004-08-26 | 2006-03-09 | Nissan Motor Co Ltd | 液圧バルジ方法、液圧バルジ製品および液圧バルジ金型 |
JP2006122979A (ja) * | 2004-10-29 | 2006-05-18 | Nissan Motor Co Ltd | 液圧バルジ成形方法、液圧バルジ成形装置および液圧バルジ成形品 |
JP4920772B2 (ja) * | 2010-06-18 | 2012-04-18 | リンツリサーチエンジニアリング株式会社 | フランジ付金属製パイプ製造装置及びその製造方法並びにブロー成形金型 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3629304A (en) | 1969-06-16 | 1971-12-21 | Searle & Co | 17alpha-alkynyl - 11beta 13beta - dialkylgona-1 3 5 (10)-triene - 3 17beta-diol 3-cycloalkyl ethers compositions and method |
US5070717A (en) * | 1991-01-22 | 1991-12-10 | General Motors Corporation | Method of forming a tubular member with flange |
JP3509217B2 (ja) * | 1994-09-20 | 2004-03-22 | 株式会社日立製作所 | 異形断面管の成形方法並びに成形装置 |
NZ500158A (en) * | 1997-04-16 | 2002-03-01 | Cosma Int Inc | High pressure hydroforming press |
US7249481B1 (en) * | 2006-05-01 | 2007-07-31 | Ford Global Technologies, Llc | Process for forming a hydroformed automotive component with integrated weld flange |
US8171769B2 (en) * | 2009-01-27 | 2012-05-08 | Ford Global Technologies | Method of forming a flanged tubular member in hydroforming |
US9302307B2 (en) * | 2009-02-16 | 2016-04-05 | Vari-Form, Inc. | Method of forming hollow body with flange |
CN103464562B (zh) * | 2013-09-14 | 2016-03-30 | 中国第一汽车股份有限公司 | 腔体件低内压成形方法 |
-
2014
- 2014-07-15 JP JP2014145194A patent/JP6401953B2/ja active Active
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- 2017-01-11 US US15/403,577 patent/US9950356B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001259754A (ja) * | 2000-01-14 | 2001-09-25 | Sumitomo Metal Ind Ltd | 液圧バルジ加工部品の成形方法、金型および液圧バルジ加工部品 |
JP2006061944A (ja) * | 2004-08-26 | 2006-03-09 | Nissan Motor Co Ltd | 液圧バルジ方法、液圧バルジ製品および液圧バルジ金型 |
JP2006122979A (ja) * | 2004-10-29 | 2006-05-18 | Nissan Motor Co Ltd | 液圧バルジ成形方法、液圧バルジ成形装置および液圧バルジ成形品 |
JP4920772B2 (ja) * | 2010-06-18 | 2012-04-18 | リンツリサーチエンジニアリング株式会社 | フランジ付金属製パイプ製造装置及びその製造方法並びにブロー成形金型 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3170573A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3342499A4 (en) * | 2015-08-27 | 2018-08-29 | Sumitomo Heavy Industries, Ltd. | Molding device and molding method |
US10773292B2 (en) | 2015-08-27 | 2020-09-15 | Sumitomo Heavy Industries, Ltd. | Forming device and forming method |
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