A multi-forming device is disclosed. A multi-forming device according to an exemplary embodiment of the present invention may include: a lower mold die; a lower mold that is disposed at a center upper surface of the lower mold die, in which a gas passage is formed in an up-and-down direction to receive a shaping gas from an outside gas supplier device, in which a lower mold surface is formed at an upper surface thereof, and in which a plurality of heating cartridges are disposed therein along the lower surface thereof; an upper mold that is disposed on an upper side slider to be moved in an up-and-down direction corresponding to the lower mold, in which an upper mold surface is formed at a lower surface corresponding to the lower mold, in which an upper mold face is formed at a circumference of the upper mold surface, and in which a plurality of heating cartridges are disposed along the upper mold surface; a blank holder through which the lower mold is inserted and that is disposed to move in an up-and-down direction through a cushion spring on the lower mold die, and in which a holder face is formed to grasp a material together with the upper mold face at an early stage of a forming process; an inner gas pipe that is disposed in a gas passage of the lower mold; and a switch valve that switches supply passages of the shaping gas that is supplied to the inner gas pipe and the gas passage.

In the proposed hydro ironing method, through an innovative arrangement of loads and using a novel configuration for the die components, the thickness reduction in one stage of ironing is almost equal to twice the common approaches.

In the proposed hydro ironing method, through an innovative arrangement of loads and using a novel configuration for the die components, the thickness reduction in one stage of ironing is almost equal to twice the common approaches.

A multi-forming device is disclosed. A multi-forming device according to an exemplary embodiment of the present invention may include: a lower mold die; a lower mold that is disposed at a center upper surface of the lower mold die, in which a gas passage is formed in an up-and-down direction to receive a shaping gas from an outside gas supplier device, in which a lower mold surface is formed at an upper surface thereof, and in which a plurality of heating cartridges are disposed therein along the lower surface thereof; an upper mold that is disposed on an upper side slider to be moved in an up-and-down direction corresponding to the lower mold, in which an upper mold surface is formed at a lower surface corresponding to the lower mold, in which an upper mold face is formed at a circumference of the upper mold surface, and in which a plurality of heating cartridges are disposed along the upper mold surface; a blank holder through which the lower mold is inserted and that is disposed to move in an up-and-down direction through a cushion spring on the lower mold die, and in which a holder face is formed to grasp a material together with the upper mold face at an early stage of a forming process; an inner gas pipe that is disposed in a gas passage of the lower mold; and a switch valve that switches supply passages of the shaping gas that is supplied to the inner gas pipe and the gas passage.

A multi-forming device is disclosed. A multi-forming device according to an exemplary embodiment of the present invention may include: a lower mold die; a lower mold that is disposed at a center upper surface of the lower mold die, in which a gas passage is formed in an up-and-down direction to receive a shaping gas from an outside gas supplier device, in which a lower mold surface is formed at an upper surface thereof, and in which a plurality of heating cartridges are disposed therein along the lower surface thereof; an upper mold that is disposed on an upper side slider to be moved in an up-and-down direction corresponding to the lower mold, in which an upper mold surface is formed at a lower surface corresponding to the lower mold, in which an upper mold face is formed at a circumference of the upper mold surface, and in which a plurality of heating cartridges are disposed along the upper mold surface; a blank holder through which the lower mold is inserted and that is disposed to move in an up-and-down direction through a cushion spring on the lower mold die, and in which a holder face is formed to grasp a material together with the upper mold face at an early stage of a forming process; an inner gas pipe that is disposed in a gas passage of the lower mold; and a switch valve that switches supply passages of the shaping gas that is supplied to the inner gas pipe and the gas passage.

A punch (2) and a pad (5) are opposed to each other such that a molded portion (3a) of a metal laminate film (3) to be processed is interposed between the punch (2) and the pad (5). An enclosed space (6, 7) is compressed to raise only the temperature of the molded portion (3a) while keeping the vicinity of the molded portion (3a) at a low temperature (S1, S2). After that, the enclosed space (6, 7) is moved with respect to the molded portion (3a) to perform first molding (S3) on the molded portion (3a), and then gas in the enclosed space (6) is released to perform second molding (S4) on the molded portion (3a) by means of the punch (2) and the pad (5).

A punch (2) and a pad (5) are opposed to each other such that a molded portion (3a) of a metal laminate film (3) to be processed is interposed between the punch (2) and the pad (5). An enclosed space (6, 7) is compressed to raise only the temperature of the molded portion (3a) while keeping the vicinity of the molded portion (3a) at a low temperature (S1, S2). After that, the enclosed space (6, 7) is moved with respect to the molded portion (3a) to perform first molding (S3) on the molded portion (3a), and then gas in the enclosed space (6) is released to perform second molding (S4) on the molded portion (3a) by means of the punch (2) and the pad (5).

A system and method for hydraulic forming of sheets is provided. A coil is connected to a pulse generator storing electric energy and discharging the electric energy to the coil, creating a first electromagnetic field in the coil. A conductive plate placed on the coil such that the first electromagnetic field causes creating of a second electromagnetic field in the conductive plate, in a direction opposite to the first electromagnetic field, creating a force. A pressure chamber filled with a fluid and placed on the conductive plate. A piston placed inside the pressure chamber to transfer the force to the fluid. A sheet placed on the pressure chamber, the fluid being configured to receive the force from the piston and transfer the force to the sheet. A die placed on the sheet, wherein the force transferred to the sheet from the fluid causes the sheet to take a shape of the die.

A method of forming a part includes: inserting a blank into a die, the die comprising a mold mounted above a sealing counterpart; clamping the blank between the mold and the sealing counterpart; applying first pressure on the blank from the sealing counterpart so the blank is pressed upward to form a shaped part corresponding to the mold; applying a vacuum to the shaped part to hold it against the mold also after separating the mold and the sealing counterpart, the vacuum applied through at least one opening in the mold located in a corner of the mold that the blank does not reach when the first pressure is applied; and discontinuing the vacuum to allow the shaped part to be released from the mold.

A method of forming a part includes: inserting a blank into a die, the die comprising a mold mounted above a sealing counterpart; clamping the blank between the mold and the sealing counterpart; applying first pressure on the blank from the sealing counterpart so the blank is pressed upward to form a shaped part corresponding to the mold; applying a vacuum to the shaped part to hold it against the mold also after separating the mold and the sealing counterpart, the vacuum applied through at least one opening in the mold located in a corner of the mold that the blank does not reach when the first pressure is applied; and discontinuing the vacuum to allow the shaped part to be released from the mold.