Sheet Material Suction Device Noise Damping
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Solution Overview
Problem
Existing sheet material separation devices produce noise due to the abrupt opening of suction areas, which can be harmful to operators and require high energy consumption for rapid pressure buildup.
Innovation Solution
The device separates sheet material by positioning the first end of the opening area away from the suction area, allowing for insulation of noise and reduced energy consumption by building up negative pressure over a longer period, with features like a noise-damping housing, angled or chamfered opening edges, and staggered or varying rotor openings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the first end of the opening area is positioned at the suction area, then the sheet material can be quickly sucked in, but noise is generated due to abrupt opening
Solution Approach 1:
The opening area is segmented into two distinct zones: a first zone where openings begin to overlap (first end) and a second zone where sheet material is actually sucked (suction area). This segmentation allows the opening process to be separated from the suction process, enabling noise reduction at the opening location while maintaining suction functionality at the dedicated suction area.
Solution Approach 2:
A housing structure acts as an intermediary element that encloses the first end of the opening area where noise is generated. This housing serves as a mediator that isolates the noise source from the operator and surrounding environment, allowing the abrupt opening to occur without directly exposing the harmful noise.
2Productivity
If the negative pressure is built up rapidly, then the sheet material can be quickly separated, but high energy consumption is required
Solution Approach 1:
The system performs preliminary action by building up negative pressure in advance during the period when the first end of the opening area is positioned away from the suction area. This preliminary pressure buildup allows the actual sheet material separation to occur more efficiently without requiring excessive energy input at the moment of separation.
Solution Approach 2:
The rotor openings overlap with the stator opening in a periodic manner as the rotor rotates, creating cyclic opening and closing actions. This periodic action allows the negative pressure to be built up and released in controlled cycles, reducing the energy required compared to continuous rapid pressure changes.
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 significantly reduces noise levels and energy consumption by decoupling the noise-producing opening event from the suction area, providing a quieter and more efficient operation.
Implementation Method 1
The stator has at least one opening to which a negative pressure is applied. The rotor also has at least one opening, usually a plurality of openings or bores, which during rotation of the rotor about the stator overlap the opening of the stator and thereby define an opening area. As a result, a suction area is formed in the circumferential direction, in which sheet material to be separated is sucked in
Data Source
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AI summary
The invention relates to a device (1) for separating sheet material (100) comprising a suction apparatus (2), which has a stator (10) and a rotor (20) that can be moved in relation to the stator. The stator (10) has at least one first opening (11) and the rotor (20) has at least one second opening (21), which overlap when the rotor (20) rotates and thereby define an opening region (30) having a first end (31) and a second end (32). The opening region (30) extends from the first end (31) to the second end (32), wherein a part of the opening region (30) between the first end (31) and the second end (32) forms a suction region (40), in which sheet material (100) to be separated can be suctioned by the suction apparatus (2). The first end (31) of the opening region (30) is arranged at a distance from the suction region (40) such that arising noise can be damped.