Intra-mold automatic bonding stamping mold and process of stator and rotor iron cores

Abstract

The invention discloses an intra-mold automatic bonding stamping mold and process of stator and rotor iron cores. The mold comprises an upper mold base and a lower mold base. Multiple independent lower sub-molds are arranged in the lower mold base. The lower sub-molds comprise non-heating sub-molds and heating sub-molds, the number of the non-heating sub-molds and the number of the heating sub-molds are at least one, the working temperatures of the heating sub-molds are higher than the normal temperature, and stamping cavities for blanking are formed in the heating sub-molds. A traditional buckle point laminated riveting structure or welding structure is changed into a coating bonding folding structure, iron losses are reduced, the performance of a motor is improved to the maximum degree,the size of the motor is reduced under the condition that the power is constant, and one-time automatic bonding folding forming in the mold is achieved. According to the process, the iron cores with coating materials are heated in the mold, the bonding folding process is automatically completed in the mold, the iron cores at the needed heights are obtained, the precision of the iron cores is guaranteed, and the productivity is improved. By means of the process, the iron cores can be precisely heated, and the situation that the positions of an upper mold body and a lower mold body are unchangedin the continuous heating process is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of mold equipment, and in particular relates to a stamping die and a process for a stator-rotor iron core, in particular to a stamping die and a process for automatic bonding in a stator-rotor iron core mold. Background technique [0002] Stamping is a forming processing method that applies external force to plates, strips, pipes and profiles by presses and molds to cause plastic deformation or separation to obtain workpieces (stamping parts) of required shape and size. The die used for stamping is called stamping die. [0003] The Chinese invention patent with the publication number CN105703565A discloses a laminated body and its manufacturing method as well as a laminated iron core manufacturing method. A process of a die; a process of obtaining a processed body having a temporary mutual fixing portion between adjacent magnetic pole portions by performing press work on a plate to be processed in a continu...

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Problems solved by technology

[0008] 2. Solve the problem that the position of the upper and lower molds is offset due to the temperature change of the template due to heating

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