Stamping progressive die for stator and rotor core of motor using adhesive dispensing lamination, and adhesive dispensing process

An adhesive dispensing lamination process for a stator and rotor core of a motor, comprising the steps of:

• (1) adhesive dispensing station setting:
• successively arranging a stamping station, an adhesive dispensing station for a first adhesive component, an adhesive dispensing station for a second adhesive component and a blanking station on the stamping progressive die for the stator and rotor core of the motor according to the moving direction of a material strip, wherein an automatic stacking mechanism for core stamping sheets is arranged below the blanking station;
• one of the adhesive dispensing station for the first adhesive component and the adhesive dispensing station for the second adhesive component is located at an upper position of the material strip, and the other adhesive dispensing station is located at a lower position of the material strip;
• wherein an adhesive dispensing device for the first adhesive component for dispersing and dispensing the first adhesive component to one side of the material strip is arranged at the adhesive dispensing station for the first adhesive component;
• an adhesive dispensing device for the second adhesive component for dispersing and dispensing the second adhesive component to the other side of the material strip is arranged at the adhesive dispensing station for the second adhesive component;
• each adhesive dispensing position arranged on one side of the material strip by the adhesive dispensing device for the first adhesive component and each adhesive dispensing position arranged on the other side of the material strip by the adhesive dispensing device for the second adhesive component are arranged opposite to each other in an up-down direction;
• wherein, in the first adhesive component and the second adhesive component, the adhesive of one of the components is a main adhesive and the adhesive of the other component is a catalyst for promoting the curing of the main adhesive;
• (2) stamping:
• moving the material strip forwards in a stepwise manner on a stamping progressive die for a stator and rotor core of a motor, and successively stamping a tooth groove, a through hole and an inner contour through a stamping die at each stamping station;
• (3) dispensing:
• continuing to move the material strip forwards until reaching the adhesive dispensing station for the first adhesive component and the adhesive dispensing station for the second adhesive component successively, and performing dispensing of the first adhesive component and the second adhesive component on the upper and lower sides of the material strip successively via the adhesive dispensing device for the first adhesive component and the adhesive dispensing device for the second adhesive component;
• (4) blanking:
• continuing to move the material strip forwards to a blanking station, and then blanking the core stamping sheet on the material strip via a blanking die on the blanking station;
• and
• (5) stacking:
• under the action of the blanking die at the blanking station, pressing the core stamping sheet into the tightening ring below the blanking station, and overlapping two upper and lower adjacent core stamping sheets into the tightening ring together, so that the main adhesive and the catalyst between the two core stamping sheets are quickly solidified due to mutual contact and pressing, thereby being laminated together;
• wherein the stacking step of the stacking procedure of step (5) comprises:
• S1, initial setting of jacking tray positions:
• when the inside of the tightening ring is empty, arranging the jacking tray at a predetermined height position by adjusting the upper and lower positions of the telescopic rod of the servo electric cylinder, wherein the predetermined height position of the jacking tray needs to ensure that the jacking tray is in elastic floating contact with the core stamping sheet after the first core stamping sheet blanks into the tightening ring;
• S2, precise presetting of jacking tray positions:
• monitoring the distance between a lower end face of the jacking tray and an upper end face of the spring ring by a distance induction sensor at an upper end of the telescopic rod of the servo electric cylinder after the first core stamping sheet blanks into the tightening ring, and then adjusting the upper and lower positions of the telescopic rod of the servo electric cylinder, so that the distance between the lower end face of the jacking tray and the upper end face of the spring ring is exactly equal to the distance of the thickness of one core stamping sheet;
• S3, transposition setting of the tightening ring:
• according to the equal division condition of the groove body or the hole on the core stamping sheet, rotating a rotary body containing the tightening ring by a certain equal division angle by means of a rotary core lamination pressing die;
• and
• S4, blanking lamination:
• under the action of the punching pressure of the blanking die at the blanking station, extruding the core stamping sheet to be blanked into the tightening ring of the automatic stacking die and to be in contact with the core stamping sheet blanked previously in the tightening ring, so as to drive a lowermost core stamping sheet in the tightening ring to move downwards together;
• synchronously pushing the jacking tray floatingly supported on the lowermost core stamping sheet to move downwards, so that the lower end face of the jacking tray is in contact with the upper end face of the spring ring, wherein the displacement amount passed when the jacking tray moves downwards into contact with the spring ring is just equal to the distance of the thickness of one core stamping sheet, so that the gap between two adjacent core stamping sheets is eliminated, and accurate lamination is achieved;
• before the next blanking and stacking, based on the data measured by the distance induction sensor, actively moving the telescopic rod of the servo electric cylinder down by a distance of the thickness of the core stamping sheet;
• and at the same time, rotating the rotary body containing the tightening ring by a certain bisection angle by means of the rotary core lamination pressing die, so as to prepare for the next blanking and stacking.