Adaptive Transfer Unit for Composite Filter Machines
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Solution Overview
Problem
Existing machines for making composite filters face significant downtime and complexity during changeovers due to the need to adjust and replace transfer rollers with varying numbers of pickup elements or diameters, which is time-consuming and requires precise repositioning.
Innovation Solution
The machine incorporates an adaptive transfer unit with a cylindrical and tapered splined roller system, coupled with a drive shaft and adapter means, allowing the rollers to adjust their positions without changing the drive unit, enabling quick changeovers by using interchangeable spacer sleeves and transmission wheels to maintain meshed connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of pickup elements or diameter of transfer rollers is changed to adapt to different filter stick lengths, then the machine can produce different filter sizes, but the entire drive unit must be substituted and extended machine downtime occurs
Solution Approach 1:
The roller assembly is segmented into modular components: the roller body with pickup elements, interchangeable spacer sleeves, and the drive unit. This allows only the necessary components (spacer sleeves and transmission wheels) to be changed while keeping the main drive unit in place, reducing changeover time.
Solution Approach 2:
The system uses adjustable and interchangeable components (spacer sleeves and transmission wheels) that can be dynamically changed to adapt to different filter stick lengths, allowing the machine to transition between different production configurations without complete disassembly or drive unit replacement.
2Adaptability or versatility
If the transfer rollers are repositioned and fine tuned for each changeover, then the spacing of pickup elements can be adapted, but the operation becomes highly complex and extended machine downtime occurs
Solution Approach 1:
The spacer sleeves and transmission wheels are pre-configured with specific dimensions and tooth configurations that correspond to different filter stick lengths. This preliminary preparation allows operators to simply exchange pre-made components rather than performing complex measurements and adjustments during changeover.
Solution Approach 2:
The spacer sleeves act as intermediary components between the roller body and the drive unit, providing the necessary spacing adjustments. The transmission wheels with different tooth configurations serve as intermediaries to adapt the drive mechanism to different roller configurations, simplifying the overall adjustment process.
3Adaptability or versatility
If the entire drive unit is substituted for every changeover, then the transfer rollers can be adapted to different configurations, but extended machine downtime and increased operational complexity occur
Solution Approach 1:
The essential adaptive function is extracted from the entire drive unit and concentrated into interchangeable spacer sleeves and transmission wheels. This allows the main drive unit to remain in place while only the necessary adaptive components are exchanged, maintaining productivity during changeovers.
Solution Approach 2:
The main drive unit is designed with universal compatibility to work with different roller configurations through the use of interchangeable spacer sleeves and transmission wheels. This multi-functionality allows a single drive unit to serve multiple production configurations without requiring separate drive units for each filter size.
Data Source
Figure 1
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AI summary
This invention has for an object a machine for making composite filters, comprising a combining unit (2) for combining groups (3) of filter sticks which have different filtering properties and whose length is variable from a minimum value to a maximum value; a first conveyor (4) and a second conveyor (7) equipped with a plurality of second carrier assemblies (8), each having at least one second hold-down seat (9) which can describe a circle whose radius varies from a minimum to a maximum with variation of the length of the groups (3) of filter sticks; a transfer unit (13) interposed between the first and the second conveyor (4, 7), the transfer unit (13) comprising a first, cylindrical splined roller (14) and a second, tapered splined roller (15) which is inclined and tangent to the first, cylindrical roller (14); the transfer unit (13) comprises adapter means (16) capable of adapting the transfer unit (13) to variations of the length of the groups (3) of filter sticks, allowing the axis (15a) of the second, tapered roller (15) to be kept fixed while varying the position of the axis (14a) of the first, cylindrical roller (14) relative to the transfer unit (13).