Sanding Machine Adjustable Thrust Elements
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Solution Overview
Problem
Existing sanding machines for wood and metal panels lack flexibility in sanding force due to constant pneumatic pressure, resulting in limited adaptability to different panel widths and processing needs.
Innovation Solution
The sanding machine employs a mechanical detection system with adjustable thrust elements, actuator cylinders, and solenoid valves to control pneumatic pressure, allowing independent movement of abrasive belt portions for variable sanding force based on panel width and processing requirements, using a combination of pneumatic circuits and solenoid valves to manage the movement of thrust elements between contact and disengagement positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single pneumatic circuit with constant pressure is used to move thrust elements, then the sanding machine structure is simple, but the sanding force cannot be adjusted for different panel widths and processing needs
Solution Approach 1:
The single pneumatic circuit is divided into two separate pneumatic circuits (first and second circuits), each capable of independently controlling different groups of thrust elements. This segmentation allows different sanding forces to be applied to different sections of the panel simultaneously, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The pneumatic system transitions from a static constant pressure state to a dynamic adjustable pressure state. Each pneumatic circuit can independently vary its pressure levels, enabling the sanding force to be dynamically adjusted according to panel width and processing requirements while maintaining system controllability.
2Manufacturing precision
If constant pneumatic pressure is applied to all thrust elements, then the control system is simple, but the sanding precision varies for panels of different widths
Solution Approach 1:
Different groups of thrust elements are assigned different pneumatic circuits with independently adjustable pressure levels. This allows each local region of the sanding belt to exert a customized sanding force appropriate for its specific section of the panel, achieving uniform sanding quality across panels of varying widths while maintaining reasonable control system complexity.
3Adaptability or versatility
If multiple pneumatic circuits with independent pressure control are used, then the sanding force can be adjusted for different panel widths, but the device complexity increases
Solution Approach 1:
The thrust elements are divided into at least two groups, with each group controlled by a separate pneumatic circuit. This segmentation provides the flexibility to adjust sanding force for different panel widths without requiring a separate circuit for every individual thrust element, thus balancing adaptability with manageable device 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 design enhances the sanding machine's flexibility by allowing adjustable sanding force, improving its ability to handle panels of varying widths and processing tasks with greater precision and efficiency.
Implementation Method 1
each thrust element is moved to its lowered operating position by the air under pressure conveyed along the second pneumatic circuit
Data Source
Figure 1
Figure 2
AI summary
In a sanding machine for sanding/finishing panels (2) made of wood, metal or the like, an abrasive belt (11) is moved so as to come into contact with a panel (2) by a plurality of thrust elements (20), which are distributed inside the abrasive belt (11) and are moved perpendicularly to the panel (2) by respective actuator cylinders (22), each having an output rod (27), which is movable between a lowered operating position, due to the thrust of two pneumatic circuits selectively connected, in a continuous manner, to an upper chamber (30) of the actuator cylinder (22), and a raised rest position, due to the thrust of a further pneumatic circuit selectively connected to a lower chamber (31) of the actuator cylinder (22).