Double-Head Cutting Saw for Seamless uPVC Window Welding
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Solution Overview
Problem
The traditional processing of uPVC doors and windows results in visible weld flash and subsequent groove lines after angle clearance, compromising the aesthetic appearance, especially with imitation wood-grain materials.
Innovation Solution
A double-head cutting saw with automatic processing function, featuring a fixed and movable saw head with three-axis coordinated control, allows simultaneous cutting and milling of the outer contour of section bars, eliminating the need for weld flash removal and ensuring high accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If angle clearance is performed to remove weld flash, then welding quality is improved, but visible groove lines are left on the surface
Solution Approach 1:
The invention performs preliminary action by pre-milling the outer contour of the section bar before welding. This prepares the surface in advance so that after welding, the contour can be finished milled without needing to remove weld flash, thus avoiding visible groove lines while ensuring welding quality
Solution Approach 2:
The invention extracts the angle clearance step from the traditional process sequence. By removing the weld flash removal operation and replacing it with pre-milling and controlled welding parameters, the harmful groove lines are eliminated while maintaining welding quality
2Adaptability or versatility
If traditional separate processing steps are used for cutting and contour milling, then processing flexibility is maintained, but processing time increases
Solution Approach 1:
The invention merges the cutting and contour milling operations into a single integrated processing step. The double-head cutting saw performs both operations simultaneously on the section bar, eliminating the need for separate processing steps and significantly reducing processing time while maintaining flexibility through programmable control
Solution Approach 2:
The cutting saw is designed with multi-functionality to perform both cutting and contour milling operations. The device includes contour milling devices with adjustable parameters that can adapt to different section bar shapes and sizes, providing universal processing capability across various profiles
Data Source
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AI summary
The present invention discloses an angle clearance-free welding method for uPVC doors and windows, which is used for welding a welding angle formed by assembly of a left side welding unit and a right side welding unit, wherein opposite assembly inner side faces of the left side welding unit and the right side welding unit are cut surfaces; before the left side welding unit and the right side welding unit are welded, the outer surface of the outer contour of each of the cut surfaces needs to be milled off inward by using a cutting saw for a width of 1-4mm and a depth of 1.5-3mm to form a groove on the outer surface of the outer contour, so that a material fused by welding of the cut surfaces in a welding process does not overflow to the surface and is retained in the groove, no angle clearance is necessary after welding, a seamless splicing effect is achieved, and seamless butt joint of the patterns is achieved particularly for the welding of section bars with natural wood grains and patterns on the surfaces. Meanwhile, the present invention further discloses a double-head cutting saw used for cutting an end face and an end face contour in the above process.