Tapering Mandrel Scraping Units for Fur Processing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fur processing apparatuses require frequent and time-consuming replacement of scraping rollers due to worn-down edges, leading to operational downtime and potential damage to the fur during size changes.
Innovation Solution
A tapering mandrel with adjustable scraping units that automatically release to different positions based on predetermined criteria, allowing for the reuse of sharpened scraping rollers and eliminating the need for calibration, enabling the use of various sizes and types without manual adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scraping rollers are frequently replaced due to worn-down edges, then scraping effectiveness is maintained, but operational downtime increases and productivity decreases
Solution Approach 1:
The scraping roller is designed with a dynamically adjustable diameter through an adjustable core structure. The core can be extended or retracted to change the overall diameter of the scraping roller, allowing it to adapt to different wear stages. This dynamic adjustment capability enables the scraping roller to maintain effective scraping performance throughout its service life without requiring frequent replacement, thus resolving the contradiction between maintaining scraping effectiveness and minimizing operational downtime.
Solution Approach 2:
The invention changes the physical parameter of the scraping roller diameter during its operational life. By adjusting the core extension length, the diameter can be modified to compensate for wear. This parameter change allows the scraping roller to be reused for longer periods with maintained performance, reducing the frequency of replacement and minimizing productivity loss from downtime.
2Adaptability or versatility
If scraping rollers of different sizes are used to accommodate wear, then roller reuse is enabled, but calibration complexity increases and operation becomes more difficult
Solution Approach 1:
The adjustable core structure enables the scraping roller to self-adjust its diameter without requiring external calibration procedures. The operator simply adjusts the core extension to match the wear level, and the system automatically maintains proper scraping contact. This self-adjusting mechanism eliminates the need for complex calibration processes that would otherwise be required when swapping between different sized rollers, thus maintaining ease of operation while enabling roller reuse.
Solution Approach 2:
A single scraping roller with an adjustable core can perform the function of multiple fixed-size rollers. By adjusting the core extension, one roller can accommodate various wear stages and effectively replace what would traditionally require a set of different sized rollers. This multi-functionality reduces the need for multiple specialized components and simplifies the operational process, as no calibration between different roller types is needed.
3Loss of substance
If scraping rollers are sharpened and reused, then material loss is reduced, but the diameter changes requiring precise positioning control
Solution Approach 1:
The adjustable core provides a dynamic solution to the positioning precision problem. Rather than relying on precise manufacturing of fixed-size rollers, the system dynamically adjusts the roller diameter to match the actual wear condition. This eliminates the need for high-precision manufacturing and positioning, as the adjustment mechanism compensates for dimensional changes. The core can be extended or retracted in controlled increments to maintain optimal scraping contact despite material loss from sharpening and reuse.
Data Source
Figure 1
Figure 2a~2c
Figure 3
AI summary
The invention relates to an apparatus for processing the skin side of a tubular fur (2). One or more scraping means are configured for being arranged in a first position (POS1) away from a mandrel of the apparatus with a first distance (D1) in relation to the centre axis (CA) of the mandrel (3), and in a third position (POS3) where the scraping means (4a, 5a, 8a, 9a) are configured for being in contact with said skin side so as to process the skin side of said fur (2). The one or more scraping means (4a, 5a, 8a, 9a) are furthermore configured for being arranged in a second predefined position (POS2) being arranged between said first position (POS1) and said third second position (POS3) with a second predefined distance (D2) in relation to the centre axis (CA) of said mandrel (3), and the apparatus is configured for automatically releasing the scraping means from the second position (POS2) towards said third position (POS3) when predetermined criteria is complied with.