Turret Winding Machine Electrostatic Web Fixation
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Solution Overview
Problem
Conventional turret winding machines for insulating web materials face challenges with adhesive-based core fixation, which is costly, problematic for food materials, and can lead to voltage flashovers due to electrostatic charging, necessitating a more efficient and safer method for initial winding.
Innovation Solution
A turret winding machine with electrostatic fixation of the web material's beginning on a winding core using a device for transferring electrical charges, coupled with a high-voltage source and control device to compensate for unwanted charges and ensure secure fixation, reducing operational costs and risks of flashovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive tapes are used to fix the beginning of the web on the winding core, then the web material is securely fixed during initial winding, but the process speed is limited, costs increase due to adhesive tapes, and food safety is compromised
Solution Approach 1:
The patent replaces the mechanical adhesive bonding system with an electrostatic charging system. A charging device applies electrical charges to the web material and/or winding core, creating electrostatic attraction forces that secure the web beginning during initial winding without requiring adhesive tapes or mechanical fastening, thereby eliminating the associated limitations on process speed and food safety
Solution Approach 2:
The patent changes the physical state and properties of the web material and/or winding core by applying electrical charges. By controlling the magnitude and polarity of the electrical charges, the electrostatic attraction force is optimized to provide secure fixation during initial winding while allowing for rapid processing speeds and maintaining food safety compliance
2Reliability
If adhesive tapes are used to fix the beginning of the web on the winding core, then the web material is securely fixed during initial winding, but manufacturing costs increase due to adhesive tapes
Solution Approach 1:
The patent replaces the mechanical adhesive bonding system with an electrostatic charging system. A charging device applies electrical charges to the web material and/or winding core, creating electrostatic attraction forces that secure the web beginning during initial winding without requiring adhesive tapes or mechanical fastening, thereby eliminating the associated limitations on process speed and food safety
Solution Approach 2:
The patent eliminates the use of disposable adhesive tapes by using a reusable electrostatic charging system. The charging device can be repeatedly used without consumable materials, significantly reducing manufacturing costs while maintaining reliable fixation of the web beginning during initial winding
3Productivity
If web material is processed with movement, deflection, friction, stretching and electrostatic printing aids, then the web material is formed and printed, but high electrostatic charges are stored in the wound roll, causing voltage flashovers that endanger workers
Solution Approach 1:
The patent converts the harmful electrostatic charges accumulated during web processing into a beneficial effect. By applying controlled electrical charges through the charging device during initial winding, the electrostatic forces are harnessed to securely fix the web beginning on the winding core, transforming the potentially dangerous electrostatic energy into a useful fixation mechanism
Solution Approach 2:
The patent introduces a charging device as an intermediary between the web processing system and the winding core. This device applies controlled electrical charges to the web material and/or winding core, mediating the electrostatic interactions to achieve secure fixation while preventing dangerous charge accumulation in the finished roll
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
The electrostatic fixation method effectively compensates for electrostatic charges, reduces the need for adhesives, and minimizes the risk of voltage flashovers, enhancing manufacturing efficiency and safety by using adjustable high voltages and a charging electrode to securely fix the web material on the winding core.
Implementation Method 1
electrostatic fixation of the beginning of the web on a winding core
Implementation Method 2
fixing of the beginning of the web on a winding core during initial winding by means of electrostatic charging
Implementation Method 3
compensating for the charges present on the web material
Data Source
Figure 1
Figure 2
AI summary
Reversible winding machine with electrostatic fixation comprising: • a core carrier with side panels having holding devices at various circumferential positions for rotatably mounting a core, • a drive unit coupled to the core carrier for moving one core into a winding position and simultaneously another core into a rewinding position, • pressure rollers, one of which can be moved onto the core in the winding position and the other onto the core in the rewinding position, • a cutting device for cutting web material guided over the pressure roller on the side facing the core in the winding position with a cutting blade, • a high-voltage electrical source, • an associated device for transferring electrical charges to the web material between the pressure roller and the path of travel of the cutting blade, • an electrical control device.which is designed to apply an electrical voltage to the transfer device during winding to compensate for charges present on the web material and, when cutting, to supply a charge to the web start to fix the web start to the winding core.