Double Strip Heating Press Microwave Antenna Segmentation
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Solution Overview
Problem
Existing double band heating press technologies face challenges in achieving homogeneous heating and radiation safety due to inhomogeneous microwave radiation distribution, complex power control, and the risk of electrical arcs, particularly in the production of lightweight sandwich panels with wooden frame cores.
Innovation Solution
A double belt heating press design featuring upper and lower press tables with rollers, microwave-permeable conveyor belts, and strategically arranged rod-shaped microwave antennas, with a radiation-tight interior and adaptive power control to ensure uniform heating and prevent radiation leakage, using deflection rollers and contact strips for continuous support and electrical connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If microwave radiation sources are transmitted via waveguides and punctiform vertical radiation between individual narrow idlers, then the adhesive can be heated, but homogeneous heating of the workpieces is problematic and shielding of personnel from escaping microwave radiation is difficult
Solution Approach 1:
The microwave heating system is divided into multiple rod-shaped microwave antennas arranged in rows between support tubes, with each antenna acting as an independent radiation source. This segmentation allows targeted heating zones and eliminates the need for complex waveguide systems while achieving homogeneous heating through distributed radiation sources.
Solution Approach 2:
The support tubes serve as a dual-function intermediary structure: they provide mechanical support for the conveyor belts and simultaneously act as radiation shields to contain microwave radiation within the heating chamber. This eliminates the need for separate shielding systems while maintaining heating effectiveness.
2Temperature
If several microwave radiation sources are used to heat the adhesive, then heating can be achieved, but the power control requires a high level of technical complexity
Solution Approach 1:
The microwave heating system is divided into multiple rod-shaped microwave antennas arranged in rows between support tubes, with each antenna acting as an independent radiation source. This segmentation allows targeted heating zones and eliminates the need for complex waveguide systems while achieving homogeneous heating through distributed radiation sources.
Solution Approach 2:
The support tubes serve as a dual-function intermediary structure: they provide mechanical support for the conveyor belts and simultaneously act as radiation shields to contain microwave radiation within the heating chamber. This eliminates the need for separate shielding systems while maintaining heating effectiveness.
3Ease of operation
If a large number of individual, narrow support rollers are used, then the conveyor belts can be supported, but it makes it difficult to produce homogeneous workpieces
Solution Approach 1:
Multiple individual narrow support rollers are merged into a continuous support tube structure. The support tubes extend continuously across the width of the conveyor belt, providing uniform support distribution and eliminating the gaps and pressure points created by discrete rollers, thereby enabling homogeneous workpiece production.
Solution Approach 2:
The support tubes are designed with a cylindrical hollow structure that allows the conveyor belts to be supported over a large area. The tubular geometry provides continuous support while maintaining flexibility and conforming to the workpiece thickness variations, ensuring uniform heating and pressing.
4Device complexity
If microwave radiation is reflected in an uncontrolled manner within the housing, then the heating system can be simple, but the heat output on the workpieces can only be used very inhomogeneously and electrical voltage peaks form locally which can lead to unwanted arcing
Solution Approach 1:
The support tubes serve as a dual-function intermediary structure: they provide mechanical support for the conveyor belts and simultaneously act as radiation shields to contain microwave radiation within the heating chamber. This eliminates the need for separate shielding systems while maintaining heating effectiveness.
Solution Approach 2:
The microwave antennas are designed with specific lengths and arranged at different heights to control the standing wave patterns and radiation distribution. By adjusting the antenna parameters (length, position, height), homogeneous heating is achieved while preventing voltage peaks and arcing through optimized electromagnetic field distribution.
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 enables homogeneous heating and pressing of workpieces with enhanced radiation safety, simplified power control, and reduced risk of electrical arcs, allowing for efficient production of lightweight sandwich panels with consistent adhesive layer heating.
Implementation Method 1
rod-shaped microwave antennas of a microwave heating system arranged in between in a housing
Implementation Method 2
heat the adhesive, which are transmitted via waveguides
Implementation Method 3
microwave-permeable conveyor belts
Implementation Method 4
contact strips, which electrically connect the transport rollers to one another
Implementation Method 5
The height of the microwave oven interior is further determined by the respective workpiece thickness
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The twin tape heating press device (1) has supporting tubes (7) that are arranged on supporting rollers (2). A conveying tape (5) is rolled in a clearance gap (8) between the horizontally adjacent supporting tubes. The rod-shaped microwave antennas are arranged coaxially to the supporting tubes as radiation sources. The gap between the horizontally adjacent supporting tubes is shorted with the electrically connected terminal boards (9).