A take-out robot chucking and conveying an injection molded product, comprising: a load cell (850, 900) provided in a rotating unit of a robot arm of the take-out robot to measure a weight of the injection molded product on a conveying route, determine whether the injection molded product is desirable or faulty, and differently set the conveying route for a desirable and a faulty product, characterized in that the robot arm further comprises: a jig comprising at least one adhesive element that is fixed to the rotating unit using a fixing element and allows the injection molded product to be attached thereto; a first fixing element that connects the rotating unit and the load cell (850, 900) mounted between the rotating unit and the jig; a second fixing element that connects the load cell (850, 900) and the jig; and a chucking element that is installed by connecting the rotating unit and the jig comprising the adhesive element used to allow the injection molded product to be attached thereto, wherein the rotating unit is fixed to an end of the robot arm to be rotatable, is able to rotate to allow the injection molded product and the jig to be horizontally disposed after the injection molded product is attached, and is able to rotate to allow the injection molded product to face downwards, wherein the chucking element is able to perform chucking to allow the jig to be held onto the rotating unit, is able to cancel the chucking to allow the weight of the injection molded product to be measured during conveyance of the injection molded product, and is able to allow a load of the jig and the injection molded product to be applied to the load cell (850, 900) to apply, as a tensile force, a difference in tension applied to the first fixing element and the second fixing element fixed to the load cell (850, 900) so as to enable the measurement of the weight. a load cell (850, 900) provided in a rotating unit of a robot arm of the take-out robot to measure a weight of the injection molded product on a conveying route, determine whether the injection molded product is desirable or faulty, and differently set the conveying route for a desirable and a faulty product, a jig comprising at least one adhesive element that is fixed to the rotating unit using a fixing element and allows the injection molded product to be attached thereto; a first fixing element that connects the rotating unit and the load cell (850, 900) mounted between the rotating unit and the jig; a second fixing element that connects the load cell (850, 900) and the jig; and a chucking element that is installed by connecting the rotating unit and the jig comprising the adhesive element used to allow the injection molded product to be attached thereto, wherein the rotating unit is fixed to an end of the robot arm to be rotatable, is able to rotate to allow the injection molded product and the jig to be horizontally disposed after the injection molded product is attached, and is able to rotate to allow the injection molded product to face downwards, wherein the chucking element is able to perform chucking to allow the jig to be held onto the rotating unit, is able to cancel the chucking to allow the weight of the injection molded product to be measured during conveyance of the injection molded product, and is able to allow a load of the jig and the injection molded product to be applied to the load cell (850, 900) to apply, as a tensile force, a difference in tension applied to the first fixing element and the second fixing element fixed to the load cell (850, 900) so as to enable the measurement of the weight.