Welding method free of bead trimming and double-head cutting saw with automatic processing function

Abstract

The invention discloses a welding method free of bead trimming for a uPVC door / window. The welding method is used for welding a weld fillet; the weld fillet is formed by assembling a left welding unit and a right welding unit; opposite assembled inside surfaces of the left welding unit and the right welding unit are cutting surfaces; before welding, the outer surfaces of the outer contours of the cutting surfaces of the left welding unit and the right welding unit are milled off inwards by 1-4 mm of width and 1.5-3 mm of depth with a cutting saw; grooves are formed in the outer surfaces of the outer contours, so that materials welded and fused on the cutting surfaces do not overflow to the surfaces in welding, but are left in the grooves; after welding, the bead trimming is not required, so that the seamless splicing effect is achieved; for profiles which have natural wood grains and patterns on the surfaces, the pattern seamless butting is achieved. Besides, the invention further discloses the double-head cutting saw for cutting end surfaces and end surface contours.

Description

technical field [0001] The invention relates to the field of deep processing of uPVC profiles and the field of door, window and curtain wall processing, in particular to a welding method that avoids corner clearing, a double-headed cutting saw with automatic processing function matching the method, and a processing and using method of the double-headed cutting saw. Background technique [0002] In the door, window and curtain wall industry, uPVC doors and windows (such as figure 1 As shown) the traditional process is: profile blanking and cutting→milling drainage grooves, keyholes, etc.→welding diagonal corners of profile connections→cleaning corners→assembly. Solder softens and overflows at the welding site, forming outwardly protruding welding beads at the seam (such as figure 2 shown); after the welding is completed, the corner cleaning process is carried out. The corner cleaning process is to use a milling cutter or a planer to remove the welding bump after welding to ...

AI Technical Summary

Problems solved by technology

[0002] In the door, window and curtain wall industry, uPVC doors and windows (such as figure 1 As shown) the traditional process is: profile blanking and cutting→milling drainage grooves, keyholes, etc.→welding diagonal corners of profile connections→cleaning corners→assembly. Solder softens and overflows at the welding site, forming outwardly protruding welding beads at the seam (such as figure 2 shown); after the welding is completed, the corner cleaning process is carried out. The corner cleaning process is to use a milling cutter or a planer to remove the welding bump after welding to achieve a flat and beautiful appearance. However, the disadvantage of this process is that the welding The processing traces of tumor removal are obvious, and a white groove will be left after the welding tumor is removed; especially for many imitation wood grain materials or materials with patterns on the surface, there is a white processing groove line at the joint, Destroy the overall aesthetics of doors and windows (such as image 3 shown)

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