METHOD AND DEVICE FOR WELDING PROFILE ELEMENTS FROM PLASTIC, IN PARTICULAR FROM PVC Russian patent published in 2017 - IPC B29C65/20 B29C65/02 B23C3/30 E06B3/96 B29K27/06 

FIELD: technological processes.

SUBSTANCE: welding method involves the preparation of two profile elements (3, 3a, 3b, 60, 61) arranged in such a way that the respective zones subject to welding (4, 62, 63) face to each other. Further, the groove (19) is made in accordance with at least one zone subject to welding (4; 62, 63) of the profile elements (3; 3a; 3b; 60; 61). In this case, the mentioned step of making the groove (19) is performed by means of a removal operation on the peripheral edge of at least one profile element (3; 3a; 3b; 60; 61). Then, the heating of the identified zones subject to welding (4; 62, 63), the connecting the zones subject to welding (4; 62, 63) to each other, pressing one profile element (3; 3a, 3b, 60, 61) to the other so to hold the zones subject to welding (4, 62, 63) in mutual contact. The step of the connecting the zones subject to welding (4; 62, 63) involves the sub-step of fusing the zones subject to welding with each other (4; 62, 63) in order to form a welding bead. Then, the sub-step of the inclosing space (19a) is performed, formed by the mentioned groove (19). The welding bead is performed inside the mentioned inclosing space (19a). Next, the step of arranging the inclosing pressing device (27) in accordance with the mentioned inclosing space (19a) to prevent the output of the welding bead from this space.

EFFECT: elimination of additional operations of removing the welding bead of welded seams.

50 cl, 29 dwg