Separator Shaft Locking for Precise Strip Tool Positioning
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Solution Overview
Problem
Existing separator units for cutting laminar materials into strips face challenges with manual tool arrangement time and accuracy, increased volume due to translation means, limited minimum tool spacing, and suboptimal locking stability under lateral thrust, especially when handling strips of varying sizes and thicknesses.
Innovation Solution
The separator unit incorporates an expandable shaft with pneumatic or hydraulic expandable means, a storage magazine, and a retractable punch system with knurled locking elements and counter-knurling for improved axial and rotational locking, along with a frusto-pyramidal retractable punch design for reduced friction and precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual arrangement of separator tools is used, then device complexity is reduced, but productivity decreases due to increased time consumption
Solution Approach 1:
The separator tools automatically position themselves on the shaft through their own weight and the self-centering action of the frusto-pyramidal punch, eliminating the need for complex external positioning mechanisms. The tools slide along the shaft and self-align using the tapered punch geometry, achieving automatic self-positioning.
Solution Approach 2:
The complex mechanical translation means are replaced with a simple retractable frusto-pyramidal punch that uses geometric self-centering. Instead of complex mechanical positioning systems, the invention uses the tapered geometry of the punch to automatically center and position tools as they slide onto the shaft.
2Productivity
If translation means are added to automate tool arrangement, then productivity improves, but device complexity increases
Solution Approach 1:
The invention extracts only the essential function of tool positioning from complex translation mechanisms. Instead of full translation means, only a simple retractable frusto-pyramidal punch is used to provide the necessary self-centering action, removing unnecessary complexity while maintaining automation capability.
Solution Approach 2:
The separator tools automatically position themselves on the shaft through their own weight and the self-centering action of the frusto-pyramidal punch, eliminating the need for complex external positioning mechanisms. The tools slide along the shaft and self-align using the tapered punch geometry, achieving automatic self-positioning.
3Reliability
If separator tools are given sufficient width to prevent inclination, then reliability improves, but device complexity increases due to additional constraints
Solution Approach 1:
The separator tools are given controlled mobility to slide along the shaft and self-align during the positioning process. The frusto-pyramidal punch provides a dynamic self-centering action that guides the tools into their correct positions, allowing movement during positioning but ensuring stability once positioned.
Solution Approach 2:
The separator tools automatically position themselves on the shaft through their own weight and the self-centering action of the frusto-pyramidal punch, eliminating the need for complex external positioning mechanisms. The tools slide along the shaft and self-align using the tapered punch geometry, achieving automatic self-positioning.
4Adaptability or versatility
If expandable means are used for locking, then adaptability improves for different strip sizes, but reliability decreases under lateral thrust
Solution Approach 1:
The separator tools are given controlled mobility to slide along the shaft and self-align during the positioning process. The frusto-pyramidal punch provides a dynamic self-centering action that guides the tools into their correct positions, allowing movement during positioning but ensuring stability once positioned.
Solution Approach 2:
The separator tools automatically position themselves on the shaft through their own weight and the self-centering action of the frusto-pyramidal punch, eliminating the need for complex external positioning mechanisms. The tools slide along the shaft and self-align using the tapered punch geometry, achieving automatic self-positioning.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances stability, facilitates tool arrangement, ensures optimal locking, and reduces the unit's size, addressing the limitations of prior art by providing improved locking and positioning accuracy while accommodating strips of various sizes and thicknesses.
Implementation Method 1
the frusto-pyramidal shape of the retractable punch allows for a reduced friction coupling with the separator tool
Implementation Method 2
knurled locking elements and counter-knurling for improved axial and rotational locking
Data Source
Figure 1~2
Figure 3~4
Figure 5~6b
AI summary
A separator unit (1) suitable for being used in a cutting line (100) of laminar materials into strips, of the type comprising an expandable shaft (2), a storage magazine (4) for storing separator tools (5), which is operatively associated with an end (2b) of the expandable shaft (2), separator tools (5) provided with ring nuts (51) configured to allow the translation of the separator tools (5) from the storage magazine (4) to the expandable shaft (2), and vice versa, the separator tools (5) being susceptible to being locked on the expandable shaft (2), and translation means (6) configured to translate the separator tools (5) along the expandable shaft (2). The separator unit provides for the expandable shaft (2) to be provided with a first slit (7) adapted to house a locking element (8) with a knurling (9) on its outwards facing surface (8a) and susceptible to translating in radial direction and provides for the ring nuts (51) to have a counter-knurling (10) on a length of their surfaces (51 a) facing the expandable shaft (2). The knurling (9) and the counter-knurling (10) are configured to fixedly couple when the surface (8a) of the locking element (8) is placed in contact with the surfaces (51a) of the ring nuts (51).