Winding Machine Axial Displacement for Coil Collision Prevention

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Solution Overview

Problem

Winding machines face challenges in ensuring a sufficient time frame for removing finished coils without risking collisions between coils of increasing diameter, due to the dependency on spindle distance and infeed speed, which complicates the changing and removal process.

Innovation Solution

A displacement device is used to move completely wound coils into a removal position without axial overlap, allowing for extended removal time and preventing collisions by guiding the coils past each other axially, while also enabling easier access for manual or automatic removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the distance between spindles is kept small to reduce machine size, then the overall size of the winding machine is reduced, but the time available for removing finished coils is insufficient and collision risk increases

Engineering Contradiction:
Improvemachine sizeVSAvoidremoval time
Core Design Contradiction:
Area of stationary objectVSLoss of time

Solution Approach 1:

The invention introduces a displacement device that moves finished coils axially (in the longitudinal direction) to create an offset between coils on adjacent spindles. This axial displacement adds a dimensional solution to the spatial conflict, allowing coils to be positioned at different axial locations rather than requiring increased radial distance between spindles. The displacement device creates a staggered arrangement where finished coils are shifted axially relative to active coils, preventing collision while maintaining compact spindle spacing.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Loss of time

If the distance between spindles is increased to allow longer removal time, then collision risk is reduced, but the overall size of the winding machine increases

Engineering Contradiction:
Improveremoval timeVSAvoidmachine size
Core Design Contradiction:
Loss of timeVSArea of stationary object

Solution Approach 1:

The invention employs a dynamic displacement device that actively adjusts the axial position of finished coils during the winding process. Rather than relying on fixed spindle spacing, the system dynamically repositions coils to optimize both safety and compactness. The displacement device can be actuated at appropriate moments to shift coils axially, creating time-dependent spatial arrangements that adapt to the winding cycle phase and removal timing.

Inventive Principle:
Principle #15Dynamics

3Productivity

If infeed speed is increased to improve productivity, then output increases, but the time frame for coil removal becomes even more constrained

Engineering Contradiction:
Improveinfeed speedVSAvoidremoval time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The displacement device performs preliminary action by positioning finished coils axially before removal is needed. By pre-displacing coils to offset positions, the system prepares the spatial arrangement in advance, creating a safety buffer that accommodates faster infeed speeds. This preliminary positioning ensures that even at high productivity rates, the axial offset is already established, preventing collision regardless of how quickly new coils are formed.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP2673229B1Winding machine
Publication Date: 2015.05.27 GEORG SAHM GMBH & CO KG
  • EP2673229B1 patent drawingFigure 1
  • EP2673229B1 patent drawingFigure 2
  • EP2673229B1 patent drawingFigure 3

AI summary

The invention relates to a winding machine (1), on which, in alternation, a spool (8) is wound in a winding position (13) of a spindle (5), while at the same time a completely wound spool (6) is removed from a spindle (4). With winding machines (1) according to the prior art having a small spacing (36) of the rotational axes (18, 19) of the spools (6, 8), the completely wound spool (6) must be removed quickly before the spool (8) has reached a critical diameter which would cause a collision of the lateral faces of the spools (6, 8). According to the invention, the completely wound spool (6) is moved by means of a displacement device (23) over a displacement path (25) before or during the winding process of the spool (8), such that the axial extensions (14, 15) of the spools (6, 8) have no overlap, but rather have a spacing (26). The collision of the spools (6, 8) can thus be prevented as the diameter of the spool (8) increases, whereby a more compact design with a smaller spacing of the spindles (4, 5) is made possible and an operator has more time to remove the completely wound spool (6).