Adjustable Guide Sleeve for Flexible Tube Cutting
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Solution Overview
Problem
Existing cutting devices for flexible continuous tubes struggle with maintaining precise cuts when the wall thickness of the tube changes, requiring multiple guide sleeves with precise inner diameters, which is impractical due to the need for complex header adjustments and the unavailability of specific diameters.
Innovation Solution
The guide means feature adjustable guide elements with a circular guide envelope contour that can be adjusted steplessly to match the outer diameter of the endless tube, allowing for precise support and cutting without the need for multiple guide sleeves, using metal guide elements with adjustable coatings and mechanisms for radial deflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a fixed inner diameter guide sleeve is used, then clean cutting is achieved for a specific tube diameter, but the device cannot handle tubes with different wall thicknesses without complex header adjustments
Solution Approach 1:
The guide sleeve is designed with radially adjustable guide elements that can be dynamically repositioned to change the guide envelope contour diameter. This allows the same guide sleeve to adapt to different tube outer diameters while maintaining the precise fit needed for clean cutting, eliminating the need for multiple fixed guide sleeves or complex header adjustments.
Solution Approach 2:
The invention changes the parameter of the guide envelope contour diameter by adjusting the radial position of the guide elements. This parameter change allows the guide sleeve to accommodate different tube outer diameters while maintaining the precise geometric relationship necessary for clean cutting across varying wall thicknesses.
2Manufacturing precision
If multiple guide sleeves with different inner diameters are provided, then cutting precision is maintained for different tube diameters, but device complexity and tool change requirements increase
Solution Approach 1:
A single guide sleeve is designed to perform multiple functions by accommodating different tube outer diameters through radial adjustment of its guide elements. This universal guide sleeve replaces the need for multiple specialized guide sleeves, reducing device complexity while maintaining cutting precision across different tube specifications.
Solution Approach 2:
The guide sleeve transitions from a static, fixed-diameter component to a dynamic, adjustable-diameter component. The radially movable guide elements enable the same guide sleeve to adapt to various tube diameters, eliminating the need for multiple guide sleeves and reducing tool change requirements.
3Manufacturing precision
If the inner diameter of the guide sleeve is precisely adapted to the outer diameter of the endless tube, then clean cutting is achieved, but any change in wall thickness requires a different guide sleeve
Solution Approach 1:
The guide sleeve incorporates radially adjustable guide elements that can be dynamically repositioned to maintain the precise fit between the guide envelope contour and the tube outer diameter. This dynamic adjustment capability ensures clean cutting quality while allowing the same guide sleeve to handle different wall thicknesses without requiring operator intervention to change guide sleeves.
Solution Approach 2:
The guide elements are designed to automatically adjust or be easily adjusted to the correct radial position based on the tube outer diameter, maintaining the precise geometric relationship needed for clean cutting. This self-adjusting capability eliminates the need for operators to manually select and change guide sleeves when wall thickness varies.
Data Source
Figure 1~2
AI summary
The invention relates to a device for cutting to length a flexible continuous tube comprising or consisting of at least one plastic layer for the production of tube bodies for the manufacture of packaging tubes, with conveying means for driving the continuous tube in a conveying direction (F), with guiding means (2) for guiding the continuous tube along its outer circumference and cutting means (3) arranged adjacent to the guiding means (2) in the conveying direction (F) for cutting the continuous tube to length along a cutting line extending in the circumferential direction (U) along the continuous tube, wherein the guiding means (2) have a plurality of guide elements (5) arranged next to each other in a circumferential direction (U), defining a cross-sectionally circular guide envelope contour (8) and adjustable by means of adjusting means (15) for setting a guide envelope contour diameter (D) perpendicular to the conveying direction (F).