Plastic Profile Welding Machine With Spaced Heating Plates
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Solution Overview
Problem
Existing machines for welding plastic profiled elements face challenges such as increased operating times, excessive cooling of plastic material, and inefficient heating due to the presence of central panels or irregular surfaces, leading to compromised welding effectiveness and aesthetics.
Innovation Solution
A machine with spaced heating plates and movable welding devices that allow for efficient heating and welding of plastic profiled elements, even with central panels or transverse elements, by using electrical resistance plates arranged parallel to the extremal areas, and incorporating removal means to shape and align the areas for optimal welding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heating plate is used to heat the extremal areas to be welded, then the plastic material can be melted for welding, but the central panel obstructs the heating plate from completely placing itself between the extremal areas, leading to excessive cooling and compromised welding effectiveness
Solution Approach 1:
The heating system is divided into two separate heating units instead of one large heating plate. Each heating unit can independently position itself between the extremal areas to be welded, allowing simultaneous heating of both areas without obstruction from the central panel. This segmentation enables complete heating effectiveness while maintaining fast welding speeds.
2Adaptability or versatility
If the heating plate is made larger to accommodate irregular surfaces with recesses and projections, then it can effectively contact both transverse and perimeter profiled elements, but this increases the overall dimensions of the machine and energy consumption
Solution Approach 1:
Each heating unit is designed with a size and shape optimized for its specific local heating task. The heating units can be independently sized according to the actual dimensions of the extremal areas they need to heat, rather than requiring one oversized heating plate to cover all possible areas. This reduces overall machine dimensions while maintaining adaptability to irregular surfaces through localized optimization.
3Productivity
If a single large heating plate is used to heat multiple extremal areas simultaneously, then welding operations can be performed faster, but the plate thickness must be increased to allow contact by extremal areas, resulting in greater difficulty reaching required temperature and higher energy consumption
Solution Approach 1:
The heating system uses multiple smaller heating units instead of one large thick plate. Each heating unit has optimized thickness for efficient heating, reducing the energy required to reach and maintain welding temperature. Multiple units can simultaneously heat different extremal areas, maintaining high welding speed while minimizing energy consumption through efficient local heating.
Solution Approach 2:
Instead of using one large heating plate that exceeds the actual heating needs, the system uses multiple heating units that provide exactly the heating capacity required for each specific extremal area. This avoids the excessive material thickness and energy consumption associated with oversized heating plates while maintaining simultaneous heating capability.
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 reduces welding time, minimizes material cooling, and ensures high-quality aesthetic outcomes by effectively joining plastic elements with reduced machine dimensions and energy consumption.
Implementation Method 1
heating means which are movable to be placed between the areas to be welded and to heat them until at least partial melting of the plastic material
Implementation Method 2
heat them until at least partial melting of the plastic material
Implementation Method 3
the plastic material, after being cooled, hardens again thus keeping the profiled elements together
Data Source
AI summary
The machine (1) comprises at least one main welding device (3) of a first profiled element (4) and a second profiled element (5) which extend along their respective longitudinal directions and are each provided with at least one extremal area to be welded (6), the main welding device (3) comprising:main retaining means (18, 19) of the profiled elements (4, 5);main heating means (20) adapted to heat the extremal areas to be welded (6);main displacement means (21) of the main retaining means (18, 19) adapted to displace the profiled elements (4, 5) between a mutual spacing away position and a mutual approaching position;wherein the main heating means (20) comprise two heating plates (27), each of which can be placed in contact with a respective extremal area to be welded (6) and arranged substantially parallel to each other at a predefined distance to define a free volume (V) positioned between them.