DEVICE FOR TUBES WELDING Russian patent published in 2020 - IPC B29C65/20 B29C65/74 B29C65/30 A61M39/14 B29C65/78 

FIELD: welding.

SUBSTANCE: group of inventions relates to device for welding of thermoplastic tubes (1,2), method of welding and welding knife. Device for welding thermoplastic tubes (1, 2) uses tubes (1, 2) placed in tubes holders (100, 200) and compressed by means of tube clamps. Welding knife has a rectangular shape and comprises recesses on its melting surface, wherein it moves between first and second tube holders and dissects tubes (1, 2) in process. Thus, cut ends and remaining ends are obtained. Cut ends are aligned by relative displacement of one tube holder (100) relative to another tube holder (200) and by means of horizontal movement of two tubes holders (100, 200) are simultaneously welded together to form continuous tubes. By means of the pipes welding method using the device according to the invention, the cut ends of the tubes are welded when they are squeezed in the holders.

EFFECT: technical result achieved by using a group of inventions is to provide efficiency and sterility when treating doses of donor blood.

21 cl, 14 dwg