Heating Module Lens Mounting on Non-Emissive Lamp Base
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Solution Overview
Problem
Existing preform heating modules for thermoplastic materials face inefficiencies due to shadowing by fixing flanges on emissive parts, which reduces radiation coverage and requires additional reflective means that can't accommodate the flange size, leading to ineffective heating distribution.
Innovation Solution
The heating module fixes the lens flange only on the non-emissive parts of the lamp, using a reflector positioned opposite to the emissive part, with elastic interlocking jaws and a heat-conducting design to redirect radiation without shadowing, ensuring complete radiation utilization and stable lens mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lens is attached to the tubular portion of the bulb by mounting brackets tightened around the emitting part, then the lens is securely fixed, but the fixing flanges cast a shadow preventing heating radiation from reaching the preforms
Solution Approach 1:
The mounting brackets are extracted from the emitting part of the lamp and relocated to the non-emitting base portion. This separates the lens mounting function from the radiation emission zone, eliminating the shadowing effect while maintaining secure lens fixation through the relocated bracket structure
Solution Approach 2:
The non-emitting base portion of the lamp serves as an intermediary mounting surface between the lens and the emitting tubular portion. This intermediary location provides a stable attachment point for the brackets that does not interfere with the radiation path from the filament to the preforms
2Loss of energy
If a reflector is arranged behind the lamp to redirect radiation, then radiation efficiency is improved, but the space between the reflector and tubular bulb is insufficient for lens fixing flanges
Solution Approach 1:
The lens mounting function is extracted from the limited space behind the tubular bulb and relocated to the base portion of the lamp. This extraction resolves the spatial conflict by utilizing the otherwise underutilized base area for bracket attachment, allowing both the reflector and lens mounting to coexist without interference
Solution Approach 2:
The mounting brackets are positioned in a different spatial dimension - at the base of the lamp rather than behind the tubular portion. This dimensional relocation provides sufficient clearance for both the reflector arrangement and lens fixation without requiring additional complex space management
3Temperature
If the flange is made of heat-conducting material to act as heat sink, then cooling of non-emitting parts is enhanced, but the flange structure becomes more complex
Solution Approach 1:
The mounting bracket is designed to perform multiple functions simultaneously: mechanical support for the lens, thermal conduction for cooling the base portion, and structural attachment to the lamp. This multi-functionality integrates the heat sink capability into the existing bracket structure without adding separate cooling components
Solution Approach 2:
The cooling function is merged with the mounting bracket structure by using heat-conducting material. The bracket simultaneously provides mechanical support and thermal management, combining two previously separate functions into a single integrated component that reduces overall system complexity
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
This configuration allows for uniform heating of preforms without shadow zones, maximizing radiation efficiency and maintaining stable lens positioning, while also acting as a radiator for non-emissive parts to enhance cooling and reduce operational complexity.
Implementation Method 1
the tubular section of the bulb forming an emitting part of a heating electromagnetic radiation
Implementation Method 2
They consist of a tubular bulb containing a filament that extends longitudinally between two sockets. When supplied with the appropriate electrical power, the filament emits heating radiation radially in all directions.
Implementation Method 3
at least one longitudinal lens which is fixed to the lamp, by means of at least one fixing flange, parallel to the emitting part to focus the heating radiation towards a selected area of the preform
Implementation Method 4
each fixing flange is made of a heat-conducting material to act as a heat sink for the non-emitting parts
Data Source
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AI summary
The invention relates to a module (10) for heating a preform (12) made of a thermoplastic, which comprises: a lamp (16) comprising an emissive portion (22) emitting heating electromagnetic radiation and a non-emissive portion (24) that does not emit said heating radiation; and a longitudinal lens (32) that is fastened to the lamp (16), by means of at least one fastening brace (34), parallel to the emitting portion (22) in order to focus the heating radiation toward a selected zone of the preform; characterised in that each brace (34) is only fastened to the non-emissive portion (24) of the lamp (16).