Ultrasonic welding device , comprising: a sonotrode with a sonotrode surface ; a lateral slide with a lateral slide surface ; a touching element with a touching surface ; an insertion chamber for inserting joining parts ; wherein the insertion chamber is defined in a first axial direction (y) on a first side by the sonotrode surface and in a second axial direction (x) on a second side by the lateral slide surface and on a third side opposing the second side by the touching surface ; characterized in that the ultrasonic welding device further comprises: a first receiving element with a first stop edge ; a second receiving element with a second stop edge ; wherein the first receiving element and the second receiving element are arranged to be movable in relation to each other between a starting position and an end position; wherein the first stop edge and the second stop edge are brought together in the end position opposite an open side of the insertion chamber to form a joining part receptacle for receiving the joining parts and are moved apart in the starting position; wherein the joining part receptacle is v-shaped in order to position the joining parts in the insertion chamber in the first axial direction (y) and the second axial direction (x). a sonotrode with a sonotrode surface ; a lateral slide with a lateral slide surface ; a touching element with a touching surface ; an insertion chamber for inserting joining parts ; wherein the insertion chamber is defined in a first axial direction (y) on a first side by the sonotrode surface and in a second axial direction (x) on a second side by the lateral slide surface and on a third side opposing the second side by the touching surface ; characterized in that the ultrasonic welding device further comprises: a first receiving element with a first stop edge ; a second receiving element with a second stop edge ; wherein the first receiving element and the second receiving element are arranged to be movable in relation to each other between a starting position and an end position; wherein the first stop edge and the second stop edge are brought together in the end position opposite an open side of the insertion chamber to form a joining part receptacle for receiving the joining parts and are moved apart in the starting position; wherein the joining part receptacle is v-shaped in order to position the joining parts in the insertion chamber in the first axial direction (y) and the second axial direction (x). a first receiving element with a first stop edge ; a second receiving element with a second stop edge ; wherein the first receiving element and the second receiving element are arranged to be movable in relation to each other between a starting position and an end position; wherein the first stop edge and the second stop edge are brought together in the end position opposite an open side of the insertion chamber to form a joining part receptacle for receiving the joining parts and are moved apart in the starting position; wherein the joining part receptacle is v-shaped in order to position the joining parts in the insertion chamber in the first axial direction (y) and the second axial direction (x). <EOS>