Welding Machine Cleaning Unit for PVC Profiles
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Solution Overview
Problem
Existing welding machines for PVC profiles are ineffective in removing burrs from both flat and recessed or prominent surfaces, leading to inefficiencies in the welding process and the need for additional burr cleaning machines.
Innovation Solution
A welding machine with a cleaning unit that uses a combination of a thrust plate and servo-controlled stripping blades to crush and remove burrs from flat surfaces, while positioning bearings ensure burr-free edges, preventing material overflow and scratches on profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a thrust plate is used to press the plate to the weld areas during welding, then burr formation is prevented on flat surfaces, but burrs on recessed and prominent surfaces cannot be removed
Solution Approach 1:
The cleaning unit is divided into multiple functional components: a thrust plate for pressing flat surfaces, and stripping blades for removing burrs from recessed and prominent surfaces. This segmentation allows each component to address specific surface types effectively, resolving the contradiction between preventing burrs on flat surfaces and removing burrs from all surface types.
Solution Approach 2:
The invention merges the thrust plate and stripping blades into a single integrated cleaning unit that operates after welding. This combination allows the system to first prevent burr formation on flat surfaces through the thrust plate, then remove burrs from all surfaces including recessed and prominent areas through the stripping blades, achieving comprehensive burr removal capability.
2Manufacturing precision
If separate burr cleaning machines are used, then burrs can be removed, but labor and time are increased
Solution Approach 1:
The cleaning unit is integrated directly into the welding machine, merging the welding process and burr removal process into a single continuous operation. The thrust plate and stripping blades are positioned to automatically clean burrs from all surfaces immediately after welding, eliminating the need for separate cleaning machines and reducing both time and labor requirements.
Solution Approach 2:
The cleaning unit performs burr removal as a preliminary action immediately after the welding process completes. By positioning the thrust plate and stripping blades to automatically clean burrs from all surfaces right after welding, the system prevents burr accumulation and eliminates the need for subsequent separate cleaning operations, saving time and labor.
3Adaptability or versatility
If stripping blades are used to remove burrs, then burrs on all surfaces can be removed, but scratches may be caused on profiles
Solution Approach 1:
The stripping blades are designed with specific local characteristics: they are positioned and shaped to target only the burrs on recessed and prominent surfaces while avoiding contact with the main profile body. This local quality design allows effective burr removal from difficult-to-reach areas without causing scratches on the profiles, resolving the contradiction between comprehensive cleaning capability and avoiding damage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents burr formation on all surfaces, saving labor and time, eliminating the need for separate burr cleaning machines and ensuring a burr-free welding process without scratching the profiles.
Implementation Method 1
a heating plate with a flat surface wrapped with Teflon (PTFE) film and/or resistance is heated to a certain temperature. After the heating process, the heating plate and/or the resistor are used to heat the surfaces of the PVC profiles to be joined
Implementation Method 2
the burrs on the flat surfaces are crushed by the thrust plate
Implementation Method 3
the stripping blades of the stripped blades are removed
Data Source
Figure 1
AI summary
The present invention relates to a welding machine (1) having a cleaning unit, in which the burrs on the flat surfaces are crushed by the thrust plates and the stripping blades of the stripped blades are removed, which prevents the melting material from coming out at the edges of the welded groove open PVC profiles.