Sharpening system for cutter blades for cutting flexible materials in automatic cutting machines
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Solution Overview
Problem
Current sharpening systems for cutter blades in automatic cutting machines are inefficient due to frequent sharpening needs, lack of active sharpening capabilities on the rotary guide plate, and inability to dynamically adjust abrasive element position, leading to reduced productivity and cutting precision.
Innovation Solution
A modular sharpening system integrated into the cutting head, featuring interchangeable active and passive sharpening modules with movable and rotary elements, including lubricant applicators, and electrical actuators for precise control and positioning, allowing for real-time sharpening during blade exit and adaptable to different materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If frequent sharpening is performed to maintain cutting precision, then cutting precision is improved, but productivity deteriorates due to machine downtime
Solution Approach 1:
The sharpening system is positioned to engage with the blade before it fully exits the cutting area, performing preliminary sharpening actions during the blade's natural motion cycle. This allows sharpening to begin before the blade completely leaves the material, reducing idle time and maintaining cutting precision without significant productivity loss.
Solution Approach 2:
The sharpening elements are arranged to provide continuous sharpening action as the blade moves through the cutting head. The rotary guide plate with multiple sharpening elements ensures that at least one element is always in contact with the blade, maintaining continuous sharpening rather than intermittent contact, thus improving both precision and productivity.
2Device complexity
If fixed position sharpening elements are used, then device complexity is reduced, but adaptability deteriorates as the blade cannot be sharpened at different positions
Solution Approach 1:
The sharpening system incorporates a rotary guide plate that rotates along with the blade, dynamically adjusting the position of sharpening elements relative to the blade. This dynamic arrangement allows different sharpening elements to engage with different portions of the blade during rotation, providing adaptability without complex positioning mechanisms.
Solution Approach 2:
The rotary guide plate serves multiple functions: it guides the blade vertically, provides rotational motion for blade orientation, and carries multiple sharpening elements that can contact the blade at different positions. This multi-functionality achieves adaptability while maintaining relatively simple device structure.
3Ease of operation
If the blade exits the material completely for sharpening, then sharpening access is improved, but productivity deteriorates due to extended downtime
Solution Approach 1:
The sharpening elements are positioned to engage with the blade during its exit motion from the cutting area, performing sharpening actions before the blade completely leaves the material. This preliminary sharpening approach maintains adequate sharpening access while minimizing the time the blade is away from cutting work, thus preserving productivity.
Solution Approach 2:
The sharpening process is designed to occur rapidly during the brief moment when the blade is exiting the material, rather than requiring a complete stop or extended exit. The sharpening elements make quick contact during the natural blade motion, rushing through the sharpening action to minimize downtime and maintain productivity.
4Device complexity
If passive sharpening elements are used, then device complexity is reduced, but manufacturing precision deteriorates due to lower sharpening quality
Solution Approach 1:
The system uses the dynamic motion of the rotary guide plate and blade interaction to achieve effective sharpening. The relative motion between passive sharpening elements and the moving blade creates sufficient friction and contact pressure for quality sharpening, eliminating the need for complex active driven sharpening mechanisms while maintaining manufacturing precision.
Solution Approach 2:
The passive sharpening elements utilize the kinetic energy and motion of the blade itself to perform the sharpening action. As the blade moves through the rotary guide plate, its own motion drives the sharpening process against the passive elements, achieving high-quality sharpening without requiring additional power sources or complex actuation systems.
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
Enhances cutting precision and productivity by enabling real-time sharpening with adjustable abrasive elements, reducing downtime and improving blade durability, while simplifying the design and reducing maintenance costs.
Implementation Method 1
The sharpening elements include, for example, flexible abrasive belts, active or passive grinding wheels
Implementation Method 2
said first module also preferably comprises at least one lubricant applicator, which applies a layer of lubricant to the blade
Data Source
AI summary
The sharpening system for cutter blades for cutting flexible materials in automatic cutting machines comprises at least one sharpening element, and it also comprises a first sharpening module that includes at least one first sharpening element, and a second sharpening module that includes at least one second sharpening element.It provides a sharpening system that offers an integral and simple solution to current sharpening systems by incorporating an active sharpening system in the guide plate, either in the rotary area or on the outside, or symmetrically in the upper part of the lower body of the cutting head, interchangeably.