Variable Radius Rotary Dinking Machine for Ribbon Geometry Adaptation
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Solution Overview
Problem
Existing machines for working ribbon-shaped elements in the paper industry, particularly for rotary dinking dies, face limitations with fixed radius solutions and the complexity of multi-axle systems, which restrict their adaptability and efficiency in handling ribbons with varying geometries.
Innovation Solution
A machine with working apparatuses and stations arranged along a circular trajectory with variable radius, including a helical angle, allowing for a single movement adjustment to accommodate both rectilinear and curvilinear ribbon shapes, facilitating fitting with a roll of curvilinear ribbon.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed radius solution is used for working ribbon-shaped elements, then the machine structure is simpler, but the adaptability to different ribbon geometries is reduced
Solution Approach 1:
The patent implements a dynamic positioning system where the radius of the circular trajectory can be adjusted to match different ribbon geometries. The working apparatuses and stations are positioned on a movable platform that can change its radial distance from the central axis, allowing the machine to adapt between rectilinear, curvilinear, and helical ribbon configurations without requiring multiple fixed-radius machines
Solution Approach 2:
The machine is designed with universal working apparatuses that can process multiple types of ribbon geometries (rectilinear, curvilinear, helical) using the same basic structure. The single movement adjustment mechanism allows one machine to perform the functions previously requiring multiple specialized machines with fixed radii
2Adaptability or versatility
If a multi-axle system with variable radius is used, then the adaptability to different ribbon geometries is improved, but the device complexity increases
Solution Approach 1:
Instead of complex multi-axle systems, the patent employs a single movable platform that dynamically adjusts its radial position. This simplifies the mechanical structure by eliminating multiple independent axles while maintaining the ability to handle variable radius requirements through controlled movement of the entire working station assembly
Solution Approach 2:
The patent combines multiple working apparatuses and stations onto a single movable platform that adjusts as one unit. This merging of functions reduces the number of independent mechanical systems required, simplifying the overall device while maintaining adaptability to different ribbon geometries
3Productivity
If working apparatuses are positioned along a circular trajectory with variable radius and helical angle, then the efficiency of processing curvilinear ribbons is improved, but the positioning complexity of working devices increases
Solution Approach 1:
The working apparatuses are mounted on a movable platform that can adjust its position along the circular trajectory and modify the helical angle dynamically. This allows the system to optimize processing efficiency for curvilinear ribbons by matching the trajectory to the ribbon geometry, while the centralized control of the single movement mechanism keeps positioning manageable
Data Source
AI summary
A machine (1) for working a ribbon-shaped element (T1, T2′, T2″) is described, comprising at least one cutting station (2) crossed by the ribbon-shaped element (T1, T2′, T2″), guiding means (3, 4) adapted to position and drag the ribbon-shaped element (T1, T2′, T2″) onto at least one fixed plane (PI) of the cutting station (2) keeping an edge of the ribbon-shaped element (T1, T2′, T2″) tangent to a fixed point (A1) of the fixed plane (Pi); at least one of the guiding means (3, 4) rests onto an arm (31) free of rotating with respect to a fixed axis (33); the fixed axis (33) is at the same distance with respect to the cutting station (2) and the at least one of the guiding means (3, 4).