Abstract

Disclosed are a laminated core manufacturing apparatus and a laminated core manufacturing method. The laminated core manufacturing apparatus according to the present invention comprises: a liftable upper mold; a piercing punch which is provided to the upper mold to form the outer circumferential surface of a first lamina having a first radius, includes, at the distance of the first radius, punch tips having an arc-shaped inner end portion and distributed and formed along the circumferential direction, and is capable of punching, at a selective time, a strip intermittently transferred so as to form the first lamina; a blanking punch which is provided in the upper mold, is capable of punching the strip to form the first lamina and a second lamina having an outer circumferential surface of a second radius that is larger than the first radius, has a lower end portion of the second radius, and is spaced apart from the piercing punch by a predetermined distance; a lower mold which faces the upper mold and is provided below the upper mold; and a stacking die which has a blanking die facing the blanking punch and provided in the lower mold, and in which the first lamina and the second lamina are stacked.

IPC Classes  ?

• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
• B21D 28/26 - Perforating, i.e. punching holes in sheets or flat parts
• B21D 43/00 - Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profilesAssociations therewith of cutting devices
• B21D 43/22 - Devices for piling sheets

Abstract

Disclosed are a laminated core manufacturing apparatus and an adhesive applicator for manufacturing a laminated core. The adhesive applicator comprises: a body having a plurality of first holes which form a flow path for an adhesive; a cover having a plurality of second holes communicating with the first holes to discharge the adhesive to the outside, fixed to one side of the body, and covering one side surface of the body; and plugs which are accommodated in the first holes so as to be movable along the axial line of the first holes so as to open and close the second holes, and which come into surface contact with the inner surface of the cover facing one side surface of the body in parallel to block the second holes. The inner surface of the cover is selectively in surface contact with the plug and forms a plug blocking surface perpendicular to the axial line of the first holes. According to the present invention, the adhesive applicator can be easily processed, the precision of adhesive nozzles can be improved, the heights of the adhesive nozzles can be easily regulated and processed, the time required for assembling or washing the adhesive nozzles can be shortened, the amount of adhesive applied can be precisely managed, and the number of parts and manufacturing costs of the adhesive nozzles can be reduced.

IPC Classes  ?

• B05C 1/02 - Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to separate articles
• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
• B21D 28/02 - Punching blanks or articles with or without obtaining scrapNotching
• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
• B05D 5/10 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an adhesive surface

Abstract

Disclosed is an apparatus manufacturing a laminated core by processing a core material and then forming laminae having different sizes. The apparatus for manufacturing a laminated core, according to the present invention, comprises a ball screw and a moving die which is connected to the ball screw and of which the position is changed along a straight path by the ball screw, so as to process a core material intermittently transferred thereto. According to the present invention, the size of a lamina, e.g., the width thereof, can be set in a broad range without replacing the ball screw that moves the moving die, the number of stacked laminae or the thickness of the laminated core can be variously set, the width of each laminae can be easily adjusted, and the size, i.e., the width, of each lamina can be precisely controlled.

IPC Classes  ?

• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
• B21D 43/22 - Devices for piling sheets
• B21D 28/02 - Punching blanks or articles with or without obtaining scrapNotching
• H02K 41/02 - Linear motorsSectional motors

Abstract

Disclosed is an apparatus for processing a core material to form laminae having different sizes and manufacturing a laminated core. An apparatus for manufacturing a laminated core according to the present invention includes: a linear motor; and a moving die which is connected to the linear motor and the position of which is varied along a linear path by the linear motor, so as to process a core material intermittently transferred. According to the present invention, the size of a lamina, for example, the width of a lamina can be set in various ranges without replacing a linear motor for moving a moving die; the number of laminated laminae or the thickness of a laminated core can be variously set; and the widths of laminae can be easily adjusted and the sizes, i.e. widths, of laminae can be precisely controlled.

IPC Classes  ?

• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
• H02K 41/02 - Linear motorsSectional motors
• B21D 43/22 - Devices for piling sheets
• B21D 28/02 - Punching blanks or articles with or without obtaining scrapNotching

Abstract

Disclosed are a laminated core manufacturing method and a laminated core manufacturing system for manufacturing a laminated core. The laminated core manufacturing system comprises: a main agent applicator for applying a main agent for a two-component adhesive to the surface of one side of a strip-shaped material which is intermittently transferred; a curing agent applicator provided at a position which faces the main agent applicator or is shifted by a predetermined distance along a passage of the material from a position facing the main agent applicator, in order to apply a curing agent for the two-component adhesive to the surface opposite to the surface of the one side among both side surfaces of the material; a blanking punch provided to be movable up or down at a position spaced apart from the main agent applicator and the curing agent applicator in the direction in which the material is transferred, in order to sequentially form laminae by punching an area where the main agent and the curing agent exist in a state of being separated by the material; a stacking die provided under the blanking punch so that the laminae sequentially formed by the blanking punch are input and then stacked; and a core press for pressing a laminated core discharged from the stacking die.

IPC Classes  ?

• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
• B21D 28/02 - Punching blanks or articles with or without obtaining scrapNotching
• B21D 39/03 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by platingTube expanders of sheet metal otherwise than by folding
• B05C 5/02 - Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work from an outlet device in contact, or almost in contact, with the work
• B05D 5/10 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an adhesive surface

Abstract

Disclosed are a laminated core and a laminated core manufacturing method. The laminated core according to the present invention comprises: first layers that include a plurality of first laminar segments and are arranged at intervals; first protrusions that protrude in an embossed shape from the first layers and form a plurality of first fixing columns for connecting the first layers; and second layers which include a plurality of second laminar segments and at least one of which is formed between the first layers. The boundaries of the first laminar segments intersect the boundaries of the second laminar segments, first piercing holes, through which the first fixing columns pass, are formed in the second layers, and the first protrusions are connected in a single row by press-fitting along the protrusion direction to form the first fixed columns. According to the present invention, the parallelism, perpendicularity, and flatness of the laminated core can be improved. In addition, bending of the laminar segments and distortion of the protrusions can be alleviated, and the number of layers fixed to a single protrusion can be changed according to the protruding height of the protrusion.

IPC Classes  ?

• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
• H02K 1/14 - Stator cores with salient poles
• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
• B21D 13/02 - Corrugating sheet metal, rods or profiles, or bending sheet metal, rods or profiles into wave form by pressing
• B21D 17/02 - Forming single grooves in sheet metal or tubular or hollow articles by pressing

Abstract

Disclosed are a laminated core manufacturing apparatus and a laminated core manufacturing method, which are capable of manufacturing a laminated core having a straight part and a skewed part. The laminated core manufacturing apparatus according to the present invention comprises: a blanking unit for sequentially forming laminar members by blanking an intermittently conveyed strip material for manufacturing a laminated core; a first processing unit which is provided at one side of the blanking unit in order to process the strip material before the blanking of the strip material, and which can rotate stepwise in preset angle units so as to process the strip material while changing a processing position by means of rotational movement; a second processing unit which is provided at one side or the other side of the first processing unit and which processes the strip material at a predetermined position; and a lamination die which is provided to be coaxial to the blanking unit and which has a lamination space of the laminar members sequentially formed by blanking of the strip material.

IPC Classes  ?

• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
• H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
• H01F 3/04 - Cores, yokes or armatures made from strips or ribbons
• B21D 28/06 - Making more than one part out of the same blankScrapless working
• B21D 28/16 - Shoulder or burr prevention

Abstract

One embodiment of the present invention provides a layered laminated core formed by laminating laminae, and a laminated core manufacturing method and laminated core manufacturing apparatus for same. The laminated core according to the present invention includes: a connection hole which is provided between and connects laminae provided side by side on one side and the other side of the connection hole, and into which a protrusion formed on the one lamina is inserted and penetrates in the thickness direction; and a plurality of connection laminae on which protrusions that are inserted into the connection hole penetrating the other lamina in the thickness direction are formed at different positions. According to the present invention, interference between laminae forming the laminated core can be minimized or eliminated, and thus the height deviations across different parts of the laminated core can be minimized and the parallelism, perpendicularity, and planarity of the laminated core can be improved.

IPC Classes  ?

• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
• H01F 38/12 - Ignition, e.g. for IC engines
• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
• B21D 13/02 - Corrugating sheet metal, rods or profiles, or bending sheet metal, rods or profiles into wave form by pressing
• B21D 17/02 - Forming single grooves in sheet metal or tubular or hollow articles by pressing

Abstract

Disclosed in one embodiment of the present invention are a laminated core having a layered structure formed by lamination of laminas, a method for manufacturing a laminated core therefor, and a device for manufacturing a laminated core. The laminated core according to the present invention comprises adjacent laminas which are fixed while overlapped due to connection of a protrusion part and penetration part which form a pair, wherein the protrusion part is formed on any one of the adjacent laminas, and the penetration part is formed on another lamina to penetrate in the thickness direction thereof so that the protrusion part can be inserted thereto, and the protrusion part forms, on a plurality of layers of the laminated core, while inserted into the penetration part, a lamina laminated structure for connecting the adjacent laminas, and the penetration part has a piercing processed shape. According to the present invention, interference between the laminas can be minimized or resolved, and, thus, the height deviation of each section of the laminated core can be improved, and the parallelism, perpendicularity, and flatness can be improved.

IPC Classes  ?

• H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets

Abstract

The present invention discloses an adhesive applicator for manufacturing a core, a core manufacturing apparatus, and an adhesive application method using the same. The adhesive applicator includes: a nozzle body having at least one adhesive outlet; and a nozzle plug movably provided inside the nozzle body in order to open/close the adhesive outlet. The adhesive outlet includes a nozzle hole for discharging the adhesive from the inside to the outside of the nozzle body, and the nozzle plug includes a plug body movably provided inside the nozzle body to selectively block the nozzle hole, and a plug tip formed to protrude on a fore-end surface of the plug body. The fore-end surface of the plug body has a flat surface which faces the nozzle hole and is orthogonal to an axis of the nozzle hole. According to the present invention, since processing precision and processing easiness of the nozzle plug for opening/closing the adhesive outlet and the adhesive outlet can be enhanced, an adhesive application amount applied to the material by the adhesive applicator having a plurality of adhesive outlets can be uniformly managed.

IPC Classes  ?

• B05B 12/08 - Arrangements for controlling deliveryArrangements for controlling the spray area responsive to condition of liquid or other fluent material discharged, of ambient medium or of target
• B05D 5/10 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an adhesive surface
• B05D 7/24 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
• B05B 7/06 - Spray pistolsApparatus for discharge with one outlet orifice surrounding another approximately in the same plane

Abstract

An adhesive applicator for manufacturing a core, a core-manufacturing apparatus, and an adhesive application method using same are disclosed. The adhesive applicator comprises: a nozzle body having at least one adhesive discharge part; and a nozzle plug movably provided in the nozzle body in order to open/close the adhesive discharge part. In addition, the adhesive discharge part has a nozzle hole for discharging an adhesive to the outside from the inside of the nozzle body, and the nozzle plug includes: a plug body movably provided in the nozzle body so as to selectively block the nozzle hole; and a plug tip protruding from the front end surface of the plug body. The front end surface of the plug body faces the nozzle hole and is a plane that is orthogonal to the axial line of the nozzle hole. According to the present invention, machining precision and machining ease of the adhesive discharge parts and the nozzle plug for opening/closing the adhesive discharge parts can be improved, and thus the amount of adhesive applied to a material by the adhesive applicator having the plurality of adhesive discharge parts can be uniformly managed.

IPC Classes  ?

• B05B 12/08 - Arrangements for controlling deliveryArrangements for controlling the spray area responsive to condition of liquid or other fluent material discharged, of ambient medium or of target
• B05B 14/30 - Arrangements for collecting, re-using or eliminating excess spraying material comprising enclosures close to, or in contact with, the object to be sprayed and surrounding or confining the discharged spray or jet but not the object to be sprayed
• B05B 7/06 - Spray pistolsApparatus for discharge with one outlet orifice surrounding another approximately in the same plane
• B05D 5/10 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an adhesive surface
• B05D 7/14 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
• B05D 7/24 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies