Winding Sleeve Clamping Head Locking for Low-Force Changeover
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Solution Overview
Problem
Winding devices face challenges with increasingly long and heavy winding sleeves, requiring axial movement that exerts significant forces on the frame, hindering operator access and necessitating a larger, stiffer frame.
Innovation Solution
A clamping device with an axially movable clamping head and a locking mechanism that allows insertion and removal without axial movement, using a locking mechanism that forms a fixed stop without continuous force application, allowing for compact design and reduced axial forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the clamping head is fixed in the axial direction, then the clamping device is compact on the operator side, but inserting or removing winding sleeves requires axial movement that exerts significant forces on the frame
Solution Approach 1:
The clamping head is made axially movable relative to the base between extended and retracted positions, allowing the clamping heads to be inserted into or removed from the winding sleeve without axial movement of the sleeve itself. This dynamic design eliminates the need for axial forces on the frame during sleeve changes.
Solution Approach 2:
The clamping device is segmented into a movable clamping head assembly and a fixed base, with the locking mechanism serving as an interface between them. This segmentation allows the clamping head to be independently positioned without moving the entire device or the winding sleeve axially.
2Ease of operation
If the clamping head is made axially movable to facilitate sleeve insertion, then operator access is improved, but the device requires additional components like large spring packs to hold the clamping head in position
Solution Approach 1:
The locking mechanism is designed to pre-establish a fixed stop position for the clamping head in the extended position. This preliminary positioning action eliminates the need for continuous force application from springs or actuators, simplifying the overall device structure while maintaining the movable clamping head functionality.
Solution Approach 2:
The invention extracts the force-generating components (springs, actuators) from the system by using a locking mechanism that forms a fixed stop. The locking mechanism takes over the function of holding the clamping head in position without requiring permanent active force application, thereby reducing device complexity.
3Device complexity
If a locking mechanism is added to form a fixed stop for the clamping head, then device complexity increases, but the clamping device becomes more compact without requiring large spring packs
Solution Approach 1:
The locking mechanism is designed with axial movement capability between locked and released positions, allowing it to adapt to the clamping head's position changes. This dynamic locking mechanism achieves compact dimensions by moving axially rather than requiring lateral space for operation.
Solution Approach 2:
The locking mechanism operates primarily in the axial dimension, utilizing the same space dimension as the clamping head movement. This dimensional alignment allows the locking mechanism to be integrated compactly within the existing axial space without requiring additional lateral or radial space.
Data Source
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AI summary
A clamping device (42, 44) for clamping a winding sleeve (30) has a base (46), a clamping head (48), and a locking mechanism (50). The locking mechanism (50) is adjustable between a locking position and a release position, wherein the clamping head (48) is axially movable relative to the base (46) between an extended position and a retracted position. In the locking position, the locking mechanism (50) axially locks the clamping head (48) in the extended position and forms a fixed stop for the clamping head (48). Furthermore, a winding device (24) and a system (10) for producing a material web (B) are provided.