Linear Slide Bearing Assembly for Roll Stand Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing systems for forming extruded sheets face challenges with precise alignment and maintenance due to the use of casters and tracks, which are costly to set up, prone to misalignment, and can be impaired by foreign objects, leading to inconsistent sheet production and potential equipment shutdowns.
Innovation Solution
The apparatus employs a linear slide bearing assembly with rails and slide bearing sub-assemblies to guide the main frame and roll stand assembly, allowing for precise movement and adjustment relative to the sheet die, along with a drive assembly for controlled movement, enabling precise alignment and maintenance without the need to move the temperature and central control systems together.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If casters and tracks are used to guide the roll stack assembly, then the assembly can be moved relative to the extruder assembly to create access space, but the system becomes expensive to set up and prone to misalignment
Solution Approach 1:
The system is divided into a stationary extruder assembly and a movable roll stack assembly. The roll stack assembly is segmented into independent movable components that can be repositioned along guide rails, allowing access space creation while maintaining alignment through the rigid guideway structure rather than flexible casters.
Solution Approach 2:
The friction-based caster system is replaced with a precision mechanical guideway system using guide rails and sliding or rolling elements. This substitution eliminates the misalignment problems of casters while providing controlled, precise movement of the roll stack assembly.
2Ease of operation
If the roll stack assembly is moved using casters on tracks, then access space can be created, but foreign matter on tracks can alter the path and impair movement
Solution Approach 1:
The movement is constrained to a precise linear path along the guide rails, eliminating lateral deviation caused by foreign objects on tracks. The roll stack assembly moves only in the intended direction through the rigid rail structure, preventing path alteration.
Solution Approach 2:
The rigid guide rail structure provides inherent protection against foreign matter interference by maintaining a fixed, predetermined movement path. The structural design prevents foreign objects from altering the movement trajectory, cushioning against reliability issues before they occur.
3Productivity
If friction drive is used to move the roll stack assembly, then the system can be operated, but slippage and component failure occur necessitating repairs
Solution Approach 1:
The friction-based drive system is replaced with a positive engagement drive mechanism. The drive system uses interlocking mechanical elements such as gears, belts, or direct drive motors that provide reliable force transmission without slippage, eliminating the need for repairs due to friction drive failure.
4Adaptability or versatility
If the temperature control system and central control system are moved together with the roll stack assembly, then the system can be repositioned, but the setup becomes expensive and complex
Solution Approach 1:
The system is segmented into movable and stationary components. The roll stack assembly is made movable for repositioning, while the temperature control system and central control system remain stationary. This segmentation reduces complexity by eliminating the need to integrate and move entire control systems with the mechanical assembly.
Solution Approach 2:
The control systems are extracted from the movable roll stack assembly and kept stationary. This allows the roll stack to be repositioned independently without the complexity and cost of making the entire system including control units movable.
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 solution allows for precise and consistent alignment of the sheet die and roll stack, reducing the risk of misalignment and equipment shutdowns, while simplifying the setup and maintenance process, thereby improving the quality and reliability of the extruded sheet production.
Implementation Method 1
a linear slide bearing assembly with at least one rail defining a travel path for the main frame and through which the main frame is guided in movement relative to the sub-frame assembly
Data Source
AI summary
An apparatus for forming an extruded sheet product having an extruder assembly with a sheet die through which flowable material is delivered for sheet product formation and a roll stand assembly with a main frame and a roll stack sub-assembly on the main frame that cause flowable material from the sheet die to be formed into a sheet product. The apparatus further has a sub-frame assembly and a linear slide bearing assembly with at least one rail defining a travel path for the main frame and through which the main frame is guided in movement relative to the sub-frame assembly, thereby to selectively vary relative positions of the sheet die and roll stand assembly along the travel path.