Rotary Valve Suction Area Switching for Sheet Conveyors
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Solution Overview
Problem
Existing sheet conveyor systems require complex configurations and large switching units to change suction areas, leading to increased size and complexity.
Innovation Solution
A sheet suction device with a drum having suction holes and a rotary valve system that adjusts the number of suction holes communicating with a suction unit by relative rotation of members, allowing for simple switching of suction areas based on sheet size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex switching unit is used to change suction areas, then the suction area can be switched, but the device size and complexity increase
Solution Approach 1:
The suction holes are divided into multiple groups (first group, second group, third group) that can be independently controlled. Each group can be selectively connected to the suction unit through the rotary valve, allowing the suction area to be segmented and switched without requiring a complex overall switching mechanism.
Solution Approach 2:
A rotary valve is used to dynamically switch between different suction hole groups. The rotary valve rotates to align different groups of suction holes with the suction unit, providing a simple dynamic switching mechanism that replaces complex static switching units.
2Adaptability or versatility
If a large switching unit is used to change suction areas, then the suction area can be switched, but the device size increases
Solution Approach 1:
The suction holes are divided into multiple groups (first group, second group, third group) that can be independently controlled. Each group can be selectively connected to the suction unit through the rotary valve, allowing the suction area to be segmented and switched without requiring a complex overall switching mechanism.
Solution Approach 2:
A rotary valve is used to dynamically switch between different suction hole groups. The rotary valve rotates to align different groups of suction holes with the suction unit, providing a simple dynamic switching mechanism that replaces complex static switching units.
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
Enables efficient and compact switching of suction areas without the need for complex switching units, adapting to different sheet sizes with a simple configuration.
Implementation Method 1
The sheet conveyor sucks and attracts the sheet onto the circumferential surface of the drum
Data Source
AI summary
A sheet suction device includes a sheet bearer having a plurality of suction holes, a suction unit, a first member, and a second member. The first member has grooves arranged in a radial direction, and each of the grooves extends in a circumferential direction. The second member has a plurality of hole rows including a plurality of holes. The plurality of holes in each of the plurality of hole rows is arranged in the circumferential direction, and the plurality of hole rows is arranged in the radial direction. When the first member rotates with respect to the second member, the number of holes communicating with the grooves is changed to change the number of the plurality of suction holes communicating with the suction unit. The plurality of holes includes two or more holes that simultaneously communicate with the suction unit when the first member rotates by a unit rotation amount.