Sleeve Cutting Mechanism with Adjustable Rotary Cutters for Variable Sizes
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Solution Overview
Problem
Existing sleeve cutting mechanisms are limited in their ability to accommodate sleeves of varying sizes due to fixed radial positions of rotary cutters, which restrict their adaptability to products of different dimensions.
Innovation Solution
The mechanism allows for adjustable radial distances of rotary cutters with respect to the central axis, enabling cutting of sleeves of different sizes by synchronously or independently adjusting the positions of rotary cutters using a pivoting drive mechanism, such as a ring gear or crank handle, to match the shape of various products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If radial positions of rotary cutters are fixed, then the structure is simple and stable, but the adaptability to different sleeve sizes is limited
Solution Approach 1:
The rotary cutters are mounted on a pivoting mechanism that allows their radial position to be dynamically adjusted. The cutters can pivot between a first radial position for cutting larger sleeves and a second radial position for cutting smaller sleeves, transforming a static structure into a dynamic one that adapts to different work requirements.
Solution Approach 2:
The cutting mechanism is divided into multiple independent rotary cutters, each capable of being positioned independently at different radial distances. This segmentation allows selective adjustment of individual cutters or groups of cutters to match the specific size requirements of different sleeves.
2Adaptability or versatility
If radial distances of rotary cutters are adjustable, then the range of sleeve sizes that can be cut is increased, but the handling and operability become more complex
Solution Approach 1:
Multiple rotary cutters are mounted on a common pivoting mechanism that allows them to be adjusted simultaneously. By merging the adjustment mechanism, the patent enables synchronized movement of multiple cutters, reducing the operational complexity that would arise from independently controlling each cutter's position.
Solution Approach 2:
The pivoting mechanism serves multiple functions: it adjusts the radial position of rotary cutters, maintains their rotational capability for cutting, and provides a unified control interface for positioning multiple cutters. This multi-functionality simplifies operation compared to separate adjustment mechanisms for each cutter.
3Ease of manufacture
If fixed radial distances are used for rotary cutters, then the manufacturing and assembly are simplified, but the ability to match different product dimensions is restricted
Solution Approach 1:
The patent transforms the fixed radial mounting into a dynamic pivoting arrangement. The rotary cutters remain easily manufacturable with standard components, but the pivoting mechanism enables post-manufacturing adjustment of radial positions to match different product dimensions without requiring custom manufacturing for each product size.
Solution Approach 2:
The patent allows changing the radial position parameter of the rotary cutters after manufacturing. By introducing adjustable pivoting mechanisms, the system can adapt the geometric parameters of the cutting arrangement to match different sleeve sizes without altering the fundamental manufacturing process or component design.
Data Source
AI summary
A sleeve cutting mechanism (5; 105; 205; 305) for cutting a sleeve (3) being conveyed along a sleeve conveyance axis through a labelling machine (1) comprises a basis (10) with a sleeve passage extending along a central axis (7) which coincides with the sleeve conveyance axis, a plurality of rotary cutters (12, 12a to 12f) which are held on the basis (10) at a radial distance to and at angular distances around the central axis (7) of the sleeve passage. Each of the rotary cutters (12, 12a to 12f) comprises a carrier (14) which is held rotatably around an axis of rotation parallel to the central axis (7) of the basis (10), and at least one blade (16) fixed to the carrier for cutting the sleeve (3). Radial distances of the rotary cutters (12, 12a to 12f) with respect to the central axis (7) of the sleeve passage are adjustable.