A double injection molding system capable of continuously and automatically manufacturing four molded products for a vehicle at a time, the double injection molding system comprising:
- a first molding device 100 which molds the openable plates 11 of the molded products 10 for a vehicle through injection of plastic;
- a second molding device 200 which receives the openable plates 11 and molds the sealing portions 12 through injection of rubber around the openable plates 11 to finish the molded products 10;
- and a transport device 300 which takes out the openable plates 11 formed by the molding device 100 and transports the openable plates 11, to the second molding device 200,
- wherein the first molding device 100 includes a first case 110 in which a first entrance 110a is formed on an upper side, a first fixed mold 120 which is mounted inside the first case 110, and a first movable mold 130 which forms four cavities for molding the openable plates 11 when combined with the first fixed mold 120,
- wherein the second molding device 200 includes a second case 210 in which a second entrance 210a is formed on an upper side, a second fixed mold 220 which is mounted inside the second case 210, and a second movable mold 230 which forms four cavities for molding the sealing portions 12 when combined with the second fixed mold 220,
- wherein the transport device 300 includes:
- a moving head 310 which moves in X-axis and Y-axis directions on the upper side of the first molding device 100 and the upper side of the second molding device 200;
- a stretchable rod 320 which is provided to the moving head 310 to be stretchable in the Z-axis direction so that the length thereof is adjusted;
- a first jig 330 which is coupled to the stretchable rod 320, enters and exits the first and second cases 110 and 210 through the first and second entrances 110a and 210a, respectively, takes out the four openable plates 11 injection-molded by the first molding device 100, and mounts the four openable plates 11 on the second movable mold 230 of the second molding device 200;
- a second jig 340 which is coupled to a lower side of the first jig 330, and rotates to be bent at an angle of 90 degrees with respect to the first jig 330, enter and exit the first and second cases 110 and 210 together with the first jig 330, moves in a state where the first jig 330 and the second jig 340 are on a straight line inside the first and second cases 110 and 210, moves in a state where the second jig 340 is bent at the angle of 90 degrees with respect to the first jig 330 outside the first and second cases 110 and 210, and takes out the finished molded products 100 from the second molding device 200,
- wherein the first jig 330 includes an adsorption member 331 which adsorbs the openable plates 11 at the time of taking out the openable plates 11 from the first movable mold 130 and a pressing member 332 which presses the openable plates 11 at the time of mounting the openable plates 11 on the second movable mold 230 of which an end surface is subjected to an embossing process 332a,
- wherein the second jig 340 includes an adsorption member 341 which adsorbs the molded products 10 at the time of taking out the finished molded products 10 from the second molding device 200,
- wherein, in a state where the four molded products 10 for a vehicle in which the four openable plates 11 of the molded product 10 are molded simultaneously through injection of plastic by the first molding device 100 and sealing portions 12 are molded around the openable plates 11 through injection molding of rubber by the molding device 200 are finished simultaneously,
- in a state where the first jig 330 and the second jig 340 are bent at an angle of 90 degrees, the moving head 310 moves to the upper side of the first entrance 110a of the first case 110 so that the first jig 330 and the second jig 340 are on a straight line, after that, the stretchable rod 320 is stretched, and the first jig 330 and the second jig 340 enter the first case 110,
- wherein, between the first fixed mold 120 and the first movable mold 130, the first jig 330 advances toward the first movable mold 130, to the first movable mold 130, and the four openable plates 11 mounted on the first movable mold 130 are simultaneously adsorbed with the adsorption member 331 and, after that, taken out,
- wherein the stretchable rod 320 is shrunk, the first jig 330 and the second jig 340 are bent at an angle of 90 degrees, and after that, the moving head 310 moves toward the second entrance 210a of the second case 210,
- wherein, after the first jig 330 and the second jig 340 are on a straight line above the second entrance 210a, the stretchable rod 320 is stretched, the second jig 340 provided at the bottom of the first jig 330 enters between the second fixed mold 220 and the second movable mold 230 of the second molding device 200,
- wherein the second jig 340 advances toward the second movable mold 230, the four finished molded products 10 mounted on the second movable mold 230 are simultaneously adsorbed with the adsorption member 341 and, after that, taken out,
- wherein, after that, the stretchable rod 320 is further stretched, so that the first jig 330 enters between the second fixed mold 220 and the second movable mold 230,
- wherein the first jig 330 advances toward the second movable mold 230, and the four openable plates 11 are simultaneously mounted on the second movable mold 230,
- wherein the stretchable rod 320 is shrunk so that the first jig 330 and the second jig 340 exit the second molding device 200, and after that, in a state where the moving head 310 moves to a loading location between the first molding device 100 and the second molding device 200, and
- wherein, while maintaining the state where the first jig 330 and the second jig 340 are bent at an angle of 90 degrees, the stretchable rod 320 is stretched on the loading location, and the exertion of an adsorption force to the second jig 340 is stopped, so that the molded products 10 attached to the adsorption member 341 of the second jig 340 is loaded at the loading location.