Abstract: A manufacturing method for a laminated iron core includes conveying a sheet steel strip in an intermittent manner in a lift up state, with upward movement of the strip being limited by a guiding member provided on a lower holder; punching an outer shape of each iron core laminae; and applying adhesive agent to a surface of the strip before the punching. The adhesive agent is applied in a state in which a pilot pin is inserted in a pilot hole of the strip and when the strip is about to be pressed against or is being pressed against the die plate by a stripper provided on an upper holder. After application of the adhesive agent, the strip is returned to the lift up state by raising the upper holder, with a lifter and the stripper plate being in abutment with the lower and upper surfaces of the strip, respectively.

Abstract: Problem to be Solved An adhesive agent is accurately applied on an adhesive agent applying surface. Solution Provided are guiding members (100) that guide the conveyance of a sheet steel strip (F) along an intermittent conveyance direction of the sheet steel strip (F) and limit the upward movement of the sheet steel strip (F), and an adhesive agent applying apparatus (50) that applies an adhesive agent to an adhesive agent applying surface at a section corresponding to an iron core lamina (A, W).

Abstract: A magnet embedded core is manufactured in a stable manner even when using a die clamping device having a large rated clamping force by preventing an excessive pressurizing force from being applied to a laminated iron core, performing the clamping with an appropriate pressurizing force so to minimize leakage of the resin out of magnet insertion holes, and suppressing a reduction in the geometric and dimensional precision of the laminated iron core. A die clamping device for driving a moveable platen in a direction toward and away from a fixed lower platen is configured to include a toggle link mechanism. In a fully extended state of the toggle link mechanism, an upper die abuts an end surface of the laminated iron core to close openings of the magnet insertion holes and pressurize the laminated iron core in a laminating direction.

Abstract: To prevent an adhesive agent from adhering to a die set for outer shape punching and avoid contamination of the die set by the adhesive agent even if the adhesive agent protrudes from the outer shape contour of a laminated iron core, a laminated iron core manufacturing device includes: a first punch (32) and a first die (48) for punching a part of an outer shape of each iron core lamina in a sheet steel strip; an adhesive agent applying apparatus (60) configured to apply an adhesive agent on an adhesive agent application region including a portion defined in the sheet steel strip by punching by the first punch (32) and the first die 48; and a second punch (34) and a second die (50) configured to punch the outer shape of each iron core lamina other than the part punched by the first punch (32) and the first die (48) from the sheet steel strip.

Abstract: A resin filling method for a magnet embedded core includes: a fixing step of sandwiching the laminated iron core at axial ends thereof between a first mold and a second mold provided to face each other; and a resin injecting step of injecting a resin into the magnet insertion hole from a resin injecting portion provided in the first mold or the second mold, wherein in the resin injecting step, an end portion of the resin injecting portion is inserted into the magnet insertion hole beyond an axial end surface of the permanent magnet inserted in the magnet insertion hole.

Abstract: A resin filling device includes: a first mold and a second mold provided so as to face each other to sandwich therebetween a laminated iron core and thereby to fix the laminated iron core; a flow path forming member provided to the first mold so as to be engageable with one of the axial ends of the laminated iron core and forming a resin flow path through which a resin flows; and a fitting member provided to the second mold to be fitted into an opening portion of the flow path forming member that is in communication with the resin flow path, wherein the fitting member is provided with a vent portion for discharging air in the resin flow path to outside.

Abstract: A magnet embedded core is manufactured in a stable manner even when using a die clamping device having a large rated clamping force by preventing an excessive pressurizing force from being applied to a laminated iron core, performing the clamping with an appropriate pressurizing force so to minimize leakage of the resin out of magnet insertion holes, and suppressing a reduction in the geometric and dimensional precision of the laminated iron core. A die clamping device for driving a moveable platen in a direction toward and away from a fixed lower platen is configured to include a toggle link mechanism. In a fully extended state of the toggle link mechanism, an upper die abuts an end surface of the laminated iron core to close openings of the magnet insertion holes and pressurize the laminated iron core in a laminating direction.

Abstract: A resin filling device includes: a first mold and a second mold provided so as to face each other to sandwich therebetween a laminated iron core and thereby to fix the laminated iron core; a flow path forming member provided to the first mold so as to be engageable with one of the axial ends of the laminated iron core and forming a resin flow path through which a resin flows; and a fitting member provided to the second mold to be fitted into an opening portion of the flow path forming member that is in communication with the resin flow path, wherein the fitting member is provided with a vent portion for discharging air in the resin flow path to outside.

Abstract: A resin filling method for a magnet embedded core includes: a fixing step of sandwiching the laminated iron core at axial ends thereof between a first mold and a second mold provided to face each other; and a resin injecting step of injecting a resin into the magnet insertion hole from a resin injecting portion provided in the first mold or the second mold, wherein in the resin injecting step, an end portion of the resin injecting portion is inserted into the magnet insertion hole beyond an axial end surface of the permanent magnet inserted in the magnet insertion hole.