Shielded Conveyor Production Lines for Cleanroom Contamination Control
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Solution Overview
Problem
Existing automated production facilities in the pharmaceutical, cosmetic, and food industries face challenges in maintaining hygiene standards due to contamination risks from drive systems and production downtime during cleaning, with complex maintenance requirements and potential cross-contamination between treatment units.
Innovation Solution
The implementation of a shielded conveyor system with separate drive and working units, where a shield encloses the drive device to prevent contamination, and a negative pressure system to manage emissions, along with independent control and monitoring systems to maintain cleanliness and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If drive systems are integrated into cleanroom production facilities, then automation and productivity are improved, but contamination risk from dust and loss of work materials increases
Solution Approach 1:
The production facility is divided into separate functional zones: a cleanroom area for product processing and a non-cleanroom area for drive systems. The cleanroom is accessible independently without passing through drive system areas, physically segmenting contamination sources from product zones.
Solution Approach 2:
A controlled transition zone or airlock system serves as an intermediary between the cleanroom and non-cleanroom areas. This mediator allows necessary connections while maintaining pressure differentials and preventing direct contamination pathways from drive systems to product areas.
2Reliability
If aggressive cleaning agents are used to maintain hygiene standards, then cleanliness is improved, but production downtime increases and contamination risk from cleaning agents arises
Solution Approach 1:
The facility is segmented into cleanroom and non-cleanroom zones with independent access. Drive systems located outside the cleanroom can be maintained and cleaned separately without requiring shutdown of production processes inside the cleanroom, enabling parallel operations.
Solution Approach 2:
Production processes in the cleanroom can continue uninterrupted while maintenance and cleaning activities occur in separate non-cleanroom areas. The independent accessibility of zones allows continuous operation without mandatory shutdowns for routine maintenance.
3Object-affected harmful factors
If all equipment is housed in the cleanroom to maintain hygiene standards, then contamination prevention is improved, but device complexity and maintenance difficulty increase
Solution Approach 1:
Equipment is segmented and strategically located: sensitive product-processing equipment resides in the cleanroom while less sensitive drive systems and support equipment are positioned in non-cleanroom areas. This segmentation reduces the scope of equipment requiring cleanroom housing and simplifies overall facility design.
Solution Approach 2:
Control systems, wiring, and fluid connections serve as intermediaries that bridge the cleanroom and non-cleanroom zones. These controlled connections allow drive systems outside the cleanroom to operate equipment inside while maintaining hygiene boundaries, reducing the need to house all equipment within the cleanroom.
4Ease of repair
If the entire production section is stopped for maintenance or disruptions, then comprehensive servicing is achieved, but productivity and output are reduced
Solution Approach 1:
The production facility is segmented into independently accessible zones. Maintenance personnel can access drive systems in non-cleanroom areas without shutting down production in cleanroom areas, allowing localized maintenance that preserves overall productivity.
Solution Approach 2:
Production processes can continue in protected zones while maintenance activities occur in separate accessible zones. The independent accessibility of non-cleanroom areas enables continuous operation of critical production equipment while routine maintenance is performed on support systems.
Data Source
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AI summary
An automated production facility comprises at least one conveyor device (10) for conveying product units (1) and at least one processing and/or working unit (20) for processing and/or working product units (1). The conveyor device (10) runs through a working area (26) of the at least one processing and/or working unit (20) and comprises at least one holding device (16) for releasably holding at least one product unit (1). The at least one processing and/or working unit (20) comprises a working device (22) for processing and/or working a product unit (1) and a drive device (24) for driving the working device (22). The processing and/or working unit (20) comprises a shield at least between the drive device (24) and the working device (22), which shield separates the drive device (24) from the working device (22).A production line comprises several such production devices which have a common conveyor device (10).