Edge-Banding Milling Head Chip Evacuation During Rotation
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Solution Overview
Problem
Conventional edge-banding machines struggle to efficiently evacuate chips produced during the rotation movements of the milling head, leading to poor edge working quality and machine contamination, especially in rounding units with rotational-translational movement.
Innovation Solution
The edge-banding machine incorporates a movable suction tank mounted on the milling head, which collects chips during rotation and uses a centrifugal pressure wave to direct them into the tank, and a pressurized air flow to expel them into a collection tub for evacuation, allowing for efficient chip removal without mechanical constraints or size increase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional suction devices with fixed suction mouths are used, then the machine structure is simple, but chip evacuation efficiency is poor during milling head rotation
Solution Approach 1:
The suction mouth is made dynamic by mounting it on the milling head carriage, allowing it to move together with the milling head during rotation and translation. This dynamic positioning ensures the suction mouth remains in close proximity to the cutting zone throughout the entire machining cycle, dramatically improving chip evacuation efficiency without requiring complex additional mechanisms
Solution Approach 2:
The suction device is merged with the milling head carriage structure, combining the cutting function and chip evacuation function into a single integrated unit. This merging eliminates the need for separate fixed suction devices and reduces overall system complexity while improving performance
2Productivity
If flexible connection pipes are used to evacuate chips, then chip removal is possible, but the pipes occupy considerable space and are prone to breakage during rotation
Solution Approach 1:
The harmful flexible connection pipes are extracted and replaced with a rigid conduit integrated into the carriage structure. This extraction eliminates the reliability issues associated with flexible pipes while maintaining the essential chip evacuation function through a more durable rigid connection
Solution Approach 2:
A rigid conduit acts as an intermediary between the suction mouth and the vacuum source, providing a stable, breakage-resistant connection that can accommodate the carriage movement without the weaknesses of flexible piping
3Manufacturing precision
If the milling head weight is increased to improve stability, then positioning accuracy improves, but the machine's compactness is reduced
Solution Approach 1:
The carriage is equipped with active positioning and stabilization mechanisms that prepare and maintain precise positioning before and during the milling operation. This preliminary action allows accurate positioning without requiring excessive weight, as the stabilization is actively controlled rather than passively provided by mass
Solution Approach 2:
Mechanical stabilization through weight is replaced with controlled stabilization mechanisms, likely involving guides, dampers, or active control systems that provide positioning accuracy without adding significant mass to the milling head assembly
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 solution enables efficient and reliable chip evacuation, maintaining high edge working quality and reducing machine contamination, while allowing the machine to operate efficiently and compactly without increasing the milling head's weight or inertia.
Implementation Method 1
the rotation body, by rotating, generates a centrifugal pressure wave adapted to push the chips into the movable tank through the inlet mouth of the latter
Implementation Method 2
a pressurized air flow to expel them into a collection tub for evacuation
Data Source
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AI summary
Edge-banding machine provided with a milling device (1), which comprises: a milling head (3) provided with a milling tool (5) and actuatable to rotate around an overturning axis (Y) for at least one rotation travel so as to bring the milling tool (5) to operate on a coating edge (B) of a panel (P) to be worked; suction means (30) associated with the milling head (3) in order to evacuate chips therefrom which were produced by the working of the coating edge (B). The aforesaid suction means (30) comprise: a movable tank (31) mounted on the milling head (3) in order to receive the chips generated by the milling tool (5); a collection tub (34) separate from the movable tank (31) and intended to be connected to a suction plant; an expulsion valve (37) mounted on the movable tank (31) and actuatable to be moved between a closed configuration, in which it prevents the exit of the chips from the movable tank (31) during the rotation travel of the milling head (3), and an open configuration, when the milling head (3) is in a rest position, in order to allow the chips collected in the movable tank (31) to be expelled from the latter and conveyed into the collection tub (34).