Device for joining together a first joining partner and a second joining partner, comprising a first heat source which is arranged so as to heat a joining surface of the first joining partner, and a second heat source which is arranged so as to heat a joining surface of the second joining partner, wherein provision is made of a first component receptacle for receiving the first joining partner and a second component receptacle for receiving the second joining partner, and the first component receptacle is arranged so as to be rotatable about a first axis of rotation, and the second component receptacle is arranged so as to be rotatable about a second axis of rotation, wherein the first component receptacle is arranged in relation to the second component receptacle in such a way that the first axis of rotation and the second axis of rotation are substantially perpendicular to one another, and the first component receptacle has a heating position in which the first joining partner is arranged in relation to the first heat source in such a way that the joining surface of the first joining partner is able to be heated by the first heat source, and the second component receptacle has a heating position in which the second joining partner is arranged in relation to the second heat source in such a way that the joining surface of the second joining partner is able to be heated by the second heat source, and the first joining partner and the second joining partner can be brought together in that provision is made of a joining position in which the joining surfaces (6, 7) of the first and second joining partners (4, 5) are arranged opposite one another, and the first component receptacle is rotated about the first axis of rotation so that the first joining partner is in the joining position, and the second component receptacle is rotated about the second axis of rotation so that the second joining partner is also in the joining position, and the joining surfaces (6, 7) can be brought together in that provision is made of a joining unit which can move the first component receptacle, or a part of the first component receptacle, or the second component receptacle, or a part of the second component receptacle, wherein the joining surfaces (6, 7) are brought into contact by the movement of the joining unit. a first heat source which is arranged so as to heat a joining surface of the first joining partner, and a second heat source which is arranged so as to heat a joining surface of the second joining partner, wherein provision is made of a first component receptacle for receiving the first joining partner and a second component receptacle for receiving the second joining partner, and the first component receptacle is arranged so as to be rotatable about a first axis of rotation, and the second component receptacle is arranged so as to be rotatable about a second axis of rotation, wherein the first component receptacle is arranged in relation to the second component receptacle in such a way that the first axis of rotation and the second axis of rotation are substantially perpendicular to one another, and the first component receptacle has a heating position in which the first joining partner is arranged in relation to the first heat source in such a way that the joining surface of the first joining partner is able to be heated by the first heat source, and the second component receptacle has a heating position in which the second joining partner is arranged in relation to the second heat source in such a way that the joining surface of the second joining partner is able to be heated by the second heat source, and the first joining partner and the second joining partner can be brought together in that provision is made of a joining position in which the joining surfaces (6, 7) of the first and second joining partners (4, 5) are arranged opposite one another, and the first component receptacle is rotated about the first axis of rotation so that the first joining partner is in the joining position, and the second component receptacle is rotated about the second axis of rotation so that the second joining partner is also in the joining position, and the joining surfaces (6, 7) can be brought together in that provision is made of a joining unit which can move the first component receptacle, or a part of the first component receptacle, or the second component receptacle, or a part of the second component receptacle, wherein the joining surfaces (6, 7) are brought into contact by the movement of the joining unit.