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Assigneebielomatik Leuze GmbH & Co.
InventorTobias Schuler
Estimating the term…
Method and device for the rotational friction welding of plastic parts. A method for the rotational friction welding of plastics wherein a rotationally symmetrical plastic body is set in rotation and, as it rotates, is pressed against a welding location of a plastic part that is held stationary until plastification of the pressing surfaces of the plastic part and/or the plastic body is achieved, and wherein the rotationally symmetrical plastic body is braked to a standstill after plastifying and is held pressed against the stationary plastic part until the plastified pressing surfaces solidify, is known. According to the invention, the rotationally symmetrical plastic body is pressed at a circumferential speed of more than 7 m/s and a pressing pressure of less than 0.5 N/mm2 against the welding location of the plastic part that is held stationary. Use for plastic tanks.
Method for the rotational friction welding of plastic parts, comprising providing a rotationally symmetrical plastic body having an end rim which in cross section tapers to a point, the plastic body being set in rotation and, as it rotates, pressed against a welding location of a plastic part that is held stationary until plastification of pressing surfaces of the plastic part and/or the plastic body is achieved and the rotationally symmetrical plastic body being braked to a standstill after plastifying and held pressed against the stationary plastic part until the plastified pressing surfaces solidify into a conical weld, wherein the rotationally symmetrical plastic body is pressed at a circumferential speed of more than 7 m/s and a pressing pressure of less than 0.5 N/mm2 against the welding location of the plastic part that is held stationary.
System for carrying out a method for the rotational friction welding of a rotationally symmetrical plastic body having an end rim which in cross section tapers to a point and which in the welded state enters into a conical weld with a plastic part, the plastic body being set in rotation and, as it rotates, pressed against a welding location of said plastic part that is held stationary until plastification of pressing surfaces of the plastic part and/or the plastic body is achieved, and the rotationally symmetrical plastic body being braked to a standstill after plastifying and held pressed against the stationary plastic part until the plastified pressing surfaces solidify, a rotational drive unit equipped with a receiving arrangement for the rotationally symmetrical plastic body being provided, and an adjusting device being provided for pressing the rotationally symmetrical plastic body against the welding location of the stationary plastic part, which adjusting device adjusts the receiving arrangement in a translatory manner orthogonally in relation to the pressing surfaces of the plastic body and the plastic part, comprising the receiving arrangement being connected in a rotationally fixed manner to a drive shaft of a servomotor, which is part of the rotational drive unit, and the adjusting device having a servomotor which is in operative connection with the receiving arrangement by means of a rotary/translatory transmission unit.
Dependencies are inferred from the claim text.