Turning Device Non-Linear Compensation for Hygiene Product Transfer
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Solution Overview
Problem
Existing turning apparatuses for sanitary product production face challenges in achieving precision during material transfer and adaptability to various formats, often resulting in displacements and rejects due to structural complexities and limitations in curved plate designs.
Innovation Solution
A turning apparatus with a rotating drum and radially spaced plates that perform a non-linear compensation movement, including radial and circumferential components, to precisely transfer sanitary material pieces, allowing for adaptation to different orientations and speeds, and featuring a planar suction face for efficient vacuum operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If curved plates are used for receiving and transferring sanitary material pieces on a rotating turning apparatus, then the apparatus can transfer materials in a circular path, but displacements and rejects occur during transfer due to inability to achieve flat transfer
Solution Approach 1:
The plate is designed to perform a non-linear compensation movement with radial and circumferential components, transforming from a static curved surface to a dynamically adjustable flat transfer surface. This dynamic adjustment eliminates displacements and rejects during material transfer while maintaining the circular path capability of the rotating drum.
Solution Approach 2:
The plate's position parameters (radial and circumferential coordinates) are continuously changed during operation to compensate for the circular motion of the drum. By adjusting these parameters in real-time, the plate maintains a flat transfer path for sanitary material pieces, resolving the contradiction between circular path transfer and flat transfer precision.
2Adaptability or versatility
If cutting is performed on the turning apparatus, then the apparatus can rotate and transfer material, but various formats cannot be produced with one and the same turning apparatus
Solution Approach 1:
The plate's non-linear compensation movement enables dynamic adaptation to different material formats. By adjusting the radial and circumferential movement components, the same turning apparatus can precisely transfer various sizes and orientations of sanitary material pieces without sacrificing transfer accuracy.
Solution Approach 2:
The turning apparatus with the compensating plate becomes a universal device capable of handling multiple formats. The plate's ability to perform complex compensation movements allows one apparatus to perform the function of multiple specialized apparatuses, achieving both versatility and precision.
3Manufacturing precision
If a linear compensation movement is implemented in a known turning apparatus, then transfer precision may be improved, but the structure becomes complicated and high tolerances must be maintained
Solution Approach 1:
The plate performs a non-linear compensation movement that is integrated into the rotating drum system, eliminating the need for separate complex compensation mechanisms. This dynamic approach achieves high transfer precision without requiring high mechanical tolerances or additional structural complexity.
Solution Approach 2:
The compensation movement is merged with the rotational motion of the drum, combining two functions (rotation and compensation) into a single integrated system. This eliminates the need for separate linear compensation mechanisms and reduces overall structural complexity while maintaining precision.
4Adaptability or versatility
If rotatable plates are used for transfer, then the apparatus can change orientation, but flat transfer cannot be achieved in receiving and outputting regions
Solution Approach 1:
The plate dynamically adjusts its position through non-linear compensation movement with radial and circumferential components. This allows the plate to maintain a flat transfer surface while the drum rotates, enabling both orientation change capability and flat transfer accuracy simultaneously.
Solution Approach 2:
The plate's spatial parameters are continuously changed during rotation to compensate for the circular path. By adjusting radial and circumferential coordinates in real-time, the plate maintains flat transfer accuracy while enabling orientation changes, resolving the contradiction between adaptability and precision.
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 enhances transfer precision and accuracy, reducing displacements and rejects, enabling the production of various formats with increased production accuracy and energy efficiency.
Implementation Method 1
which suction face holds the respective sanitary material piece by means of a vacuum during the transport
Data Source
AI summary
The invention relates to a turning apparatus for a production plant (2) for sanitary products, in particular adult or baby diapers, the turning apparatus having a drum (12) which rotates about a geometrical drum rotational axis (11), and at least one plate (14) which is spaced apart radially from the drum rotational axis (11) and is coupled to the drum (12), which plate (14) comprises a suction face (15) for the transport of sanitary material pieces (16), which suction face (15) holds the respective sanitary material piece (16) by means of a vacuum during the transport, the plate (14) having a geometrical vertical axis (17) which runs radially with respect to the drum rotational axis (11), the plate (14) receiving the sanitary material piece (16) with a first orientation about the vertical axis (17) in a first transfer region (18), and transporting the sanitary material piece (16) from the first transfer region (18) to a second transfer region (20) along a setpoint transfer path (19) which runs in the circumferential direction around the drum rotational axis (11), the suction face (15) being rotated with the sanitary material piece (16) about the vertical axis (17) during the transport, the plate (14) outputting the sanitary material piece (16) in the second transfer region (20) with a second orientation which is different than the first orientation about the vertical axis (17). It is proposed that, during the receiving and/or outputting, the plate (14) carries out a non-linear compensation movement relative to the drum (12) with a radial movement component.