Double-row rope winder for curtain and electric curtain

An electric curtain, wherein the curtain comprises a curtain body, a top beam, a drive device, a transmission assembly and a double-row rope winder for the curtain, the double-row rope winder comprising a rope winder seat;

• at least two winding core mounting grooves are juxtaposed on the rope winder seat;
• a winding core for winding or unwinding a winding rope disposed in the winding core mounting grooves respectively;
• a first rotary part and a second rotary part respectively disposed at both ends of the winding cores;
• a first supporting part and a second supporting part cooperating with the first rotary part and the second rotary part disposed respectively at both ends of the winding core mounting grooves;
• a first rope guide hole and a second rope guide hole symmetrically disposed at both ends inside the winding core mounting grooves;
• and a third rope guide hole and a fourth rope guide hole symmetrically disposed at both ends between the two adjacent winding core mounting grooves on the rope winder seat,
• wherein the drive device is mounted at an end of the top beam;
• the drive device drives the double-row rope winder through the transmission assembly to control the curtain body to open and close;
• the double-row rope winders are symmetrically disposed inside the top beam;
• an end cover is connected at an end of the top beam opposed to the drive device;
• the curtain body comprises a daytime-use curtain body and a nighttime-use curtain body;
• a lower end of the daytime-use curtain body is connected with a first track, and a lower end of the nighttime-use curtain body is connected with a second track.