US 11,629,547 B2Granted

Device and method for connecting profiled parts

AssigneeRotox Holding GmbH

InventorWinfried Daun

Life of this patent

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Abstract

At least two profiled parts (1) are fixed to profile supports (2) that can be moved relative to each other. The profiled parts (1) are each partially melted at an end joining face (10) with a heating element (5) in a melting step and, after the heating element (5) has been removed, the partially melted joining faces (10) of the profiled parts are pressed against each other in a joining step, until the molten materials brought into contact with each other there cool down and solidify, forming a welded connection. To avoid or reduce occurrence or development of a welding bead, in a separating step that is carried out before the joining step, a mating tool (6, 29) is guided through the melt along the separating edge (9) of the limiting element (3), in order to separate the excess melt (7) that has escaped over the separating edge (9).

Claims26

Dependent claims

A method for connecting at least two profiled parts (1, 34) made of a thermoplastic material, comprising:

(a) securing the at least two profiled parts (1) to profile supports (2) that can be moved relative to each other;
(b) partially melting the at least two profiled parts (1) at their end joining faces (10) during a partial melting step employing a heating element (5);
(c) resting a limiting element (3) with a separating edge (9) on and/or against at least one outer surface of at least one profiled part (1), wherein, during the partial melting step (b), the limiting element (3) controls and/or limits excess melt (7) at the transition of the appertaining joining face (10) from escaping towards the outer surface of the profiled part;
(d) guiding a counter tool (6, 29) through the melt along the separating edge (9) of the limiting element (3) in order to segregate the excess melt (7) that has escaped over the separating edge (9);
and
(e) after the heating element (5) has been removed, pressing together the partially melted joining faces (10) of the profiled parts until the partially melted joining faces have solidified to form a welded connection.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/764,205Filed 21 Nov 2018
Priority: DE 102017127483.921 Nov 2017
Published: US 2020/0386041 A110 Dec 2020
Granted: 18 Apr 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

B29C 65/7835
Positioning the parts to be joined, e.g. aligning, indexing or centring: by using stops
E06B 3/9608
Welded or soldered joints: mitre joints
B29C 65/18
By heating, with or without pressure: using heated tools
B29C 65/20
Using heated tools: with direct contact, e.g. using "mirror"