To solve the above problem, a pouch forming apparatus according to an embodiment of the present invention includes: a die in which a forming space is recessed inward from a top surface thereof; a partition wall partitioning the forming space into first and second forming spaces; a stripper disposed above the die and configured to descend to contact the die with the pouch film therebetween to fix the pouch film to be seated on a top surface of the die; and an electromagnetic force generation part disposed above the forming space and configured to generate electromagnetic force and configured to apply the electromagnetic force to the forming space.

The present disclosure relates to an electromagnetic stamping method and an electromagnetic stamping device. The electromagnetic stamping method includes: dividing a blank holder of a stamping device into a plurality of blank holder areas based on a contour characteristic of a workpiece to be stamped; setting a blank holder force function over time for each blank holder area based on a shape characteristic of the blank holder area; collecting blank holder force data of each blank holder area every cycle period t0, and calculating an error between the blank holder force data and a value of the blank holder force function at a current time; and controlling a blank holder force for each blank holder area based on the error, and obtaining the workpiece to be stamped by stamping sheet material under the blank holder force.

The present disclosure relates to an electromagnetic stamping method and an electromagnetic stamping device. The electromagnetic stamping method includes: dividing a blank holder of a stamping device into a plurality of blank holder areas based on a contour characteristic of a workpiece to be stamped; setting a blank holder force function over time for each blank holder area based on a shape characteristic of the blank holder area; collecting blank holder force data of each blank holder area every cycle period t0, and calculating an error between the blank holder force data and a value of the blank holder force function at a current time; and controlling a blank holder force for each blank holder area based on the error, and obtaining the workpiece to be stamped by stamping sheet material under the blank holder force.

Provided are a coil unit for electromagnetic forming capable of stably processing a plurality of portions in the longitudinal direction of a tubular member while preventing the contact between the tubular member and a conductor or the contact between the conductors even when the tubular member is long, and a method for producing a formed article using the coil unit. The coil unit for electromagnetic forming includes: a shaft core member made of a resin; a conductor having a wound portion, which is wound around the shaft core member, and a pair of conductor extension portions; an insulating support; and a resin coating layer formed on the outer peripheral surface of the wound portion. In the insulating support, a conductor holding portion for holding the conductor extension portions apart from each other is formed along the longitudinal direction.

Provided are a coil unit for electromagnetic forming capable of stably processing a plurality of portions in the longitudinal direction of a tubular member while preventing the contact between the tubular member and a conductor or the contact between the conductors even when the tubular member is long, and a method for producing a formed article using the coil unit. The coil unit for electromagnetic forming includes: a shaft core member made of a resin; a conductor having a wound portion, which is wound around the shaft core member, and a pair of conductor extension portions; an insulating support; and a resin coating layer formed on the outer peripheral surface of the wound portion. In the insulating support, a conductor holding portion for holding the conductor extension portions apart from each other is formed along the longitudinal direction.

A method of forming a closure member may include: providing a support member with an outer support surface; providing a member including a first member made of electrically conductive material, wherein the first member includes a first tubular sleeve extending along a longitudinal direction between a first top end and a first bottom end; positioning the member on the support member; applying a magnetic field on the member to deform at least a portion of the first tubular sleeve around the support member to form the closure member; and/or removing the formed closure member from the support member for subsequently fitting the formed closure member on a neck of a container or a closure body.

A method of forming a closure member may include: providing a support member with an outer support surface; providing a member including a first member made of electrically conductive material, wherein the first member includes a first tubular sleeve extending along a longitudinal direction between a first top end and a first bottom end; positioning the member on the support member; applying a magnetic field on the member to deform at least a portion of the first tubular sleeve around the support member to form the closure member; and/or removing the formed closure member from the support member for subsequently fitting the formed closure member on a neck of a container or a closure body.

Said induction moulding device comprises an inductor configured to deform by induction a portion of an electrically conductive part, the inductor comprising a first power terminal, a second power terminal and at least one inductive portion electrically connecting the first power terminal and the second power terminal, the inductive portion being intended to induce an induced current in the electrically conductive part, the inductive portion extending in a longitudinal direction in which a supply current is intended to flow between the first power terminal and the second power terminal, the inductive portion comprising at least one notch defining a narrowing of a cross section of said inductive portion perpendicular to the longitudinal direction.

Said induction moulding device comprises an inductor configured to deform by induction a portion of an electrically conductive part, the inductor comprising a first power terminal, a second power terminal and at least one inductive portion electrically connecting the first power terminal and the second power terminal, the inductive portion being intended to induce an induced current in the electrically conductive part, the inductive portion extending in a longitudinal direction in which a supply current is intended to flow between the first power terminal and the second power terminal, the inductive portion comprising at least one notch defining a narrowing of a cross section of said inductive portion perpendicular to the longitudinal direction.

A non-magnetic member, a first magnetic member and a second magnetic member are prepared. The first magnetic member and the second magnetic member are connected to the non-magnetic member. Then, a first bonding portion which bonds the non-magnetic member and the first magnetic member to each other, and a second bonding portion which bonds the non-magnetic member and the second magnetic member to each other are formed. A hot isostatic pressing process is performed to the non-magnetic member, the first magnetic member and the second magnetic member to establish diffusion-bond. Thereafter, the non-magnetic member, the first magnetic member and the second magnetic member are hollowed, and the first bonding portion and the second bonding portion are removed. Thereafter, the non-magnetic member becomes a non-magnetic body, the first magnetic member becomes a first magnetic body, the second magnetic member becomes a second magnetic body and a sleeve is obtained.