Helical Winding Guide for Plastic Pipes on Asymmetrical Drums
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Solution Overview
Problem
Existing automated winding technologies are ineffective for helically winding continuously extruded plastic pipes onto rotating drums with geometric and material property irregularities, requiring manual intervention and failing to achieve fully automated winding at high speeds due to unpredictable material stabilization and drum asymmetries.
Innovation Solution
A method and device utilizing a guide with a laying arm mounted on a carrier, which is adjusted by a robot, ensures reliable automation by maintaining contact with the drum's side flange through axial reciprocating movement and angular speed control, allowing for precise winding even at high speeds by adjusting the guide's position and angle relative to the drum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated winding technology is used with rotationally asymmetrical winding drums, then productivity increases, but manufacturing precision deteriorates due to geometric irregularities and unpredictable material properties
Solution Approach 1:
The laying arm is designed with dynamic adjustment capabilities, allowing it to adapt its position and angle in real-time during the winding process. This enables the system to compensate for the rotationally asymmetrical geometry of the winding drum and unpredictable material properties, maintaining manufacturing precision while achieving high winding speeds of over 100 meters per minute
Solution Approach 2:
A control system with feedback mechanisms monitors the winding process continuously, detecting deviations caused by drum asymmetries and material property variations. The system automatically adjusts laying arm parameters based on this feedback, enabling fully automated operation without manual intervention while preserving winding accuracy
2Manufacturing precision
If manual monitoring and manipulation by experienced operators is used, then manufacturing precision is maintained, but productivity decreases due to limited operational speed
Solution Approach 1:
The winding system is designed to be self-regulating through automated control mechanisms that replicate and enhance the decision-making capabilities of experienced operators. The laying arm automatically adjusts to changing conditions without human intervention, achieving both high precision and high speed operation simultaneously
3Device complexity
If standard wooden winding drums are used, then device complexity is reduced and cost decreases, but manufacturing precision worsens due to rotationally asymmetrical geometry
Solution Approach 1:
Instead of requiring perfectly symmetrical winding drums, the invention embraces the asymmetry by designing a laying arm system that actively compensates for geometric irregularities. The system adapts to the actual drum geometry in real-time, allowing standard wooden drums with rotationally asymmetrical features to be used while maintaining winding precision
Solution Approach 2:
The laying arm system dynamically changes operational parameters such as position, angle, and movement speed to compensate for the rotationally asymmetrical drum geometry. This allows inexpensive standard drums to be used effectively without sacrificing manufacturing precision
Data Source
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AI summary
The invention relates to a method for helically winding a strand-shaped winding material, such as a continuously extruded pipe (3), preferably consisting of plastic, onto a rotationally driven winding drum (5). According to said method: a) the winding material is transferred onto the rotating winding drum (5) via a guide which is mounted so as to move axially to and fro while laying material, said guide being positioned relative to the winding drum (5) substantially depending on the progress of winding; and b) when a particularly defined or sensed turning point X0 is reached, a turn operation is carried out during which: i) the guide, which arrives at the turning point X0 in a toward movement of laying is substantially moved away from the winding drum (5) in a radial vertical direction, especially lifted, to free a particularly free contact end of the guide from the winding drum (5) or from the helical layer (15) already wound; and ii) during or after removal (i) the guide is advanced further in an axial to-and-fro laying movement direction relative to the winding drum (5) by a particularly previously defined axial move-up distance such that it travels over the turning point X0 in the axial to-and-fro laying movement direction.