Adaptive Bridge and Truck Assemblies for Tool-Free Die Pressure Setup
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Solution Overview
Problem
Conventional bridge and truck assemblies in rotary converting industries require tool-based adjustments, leading to vibration, noise, reduced stiffness, and potential safety hazards due to loose-fitting components and manual pressure set-ups, which are prone to human error and increase downtime.
Innovation Solution
Adaptive bridge and truck assemblies with spring-loaded brake leaves and magnetic locking mechanisms allow tool-free, ergonomic adjustments, ensuring precise and uniform pressure application across the press without the need for additional tools, utilizing hydrajacks and lubrication systems for enhanced stability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a milled slot and slider are employed in the bridge design to allow variable downward force locations, then the operator can adjust the jack screw to a desired location, but the slot and slider must be loose-fitting causing vibration and noise, and significantly reducing the bridge stiffness
Solution Approach 1:
The bridge is segmented into multiple adjustable jack screws that can be independently positioned along the bridge structure. This allows the downward force to be applied at variable locations without requiring a loose-fitting slot and slider mechanism, thereby maintaining bridge stiffness while achieving adaptability.
Solution Approach 2:
The bridge design incorporates dynamically adjustable components that allow the jack screw positions to be changed during operation. This dynamic adjustability enables variable downward force locations without compromising the structural integrity and stiffness of the bridge through loose-fitting components.
2Adaptability or versatility
If a sliding bearing block with a set screw is used in the truck design to hold the block in place, then the block can be secured at different locations, but a tool is required for adjustments
Solution Approach 1:
The truck design incorporates self-locking mechanisms that automatically secure the bearing block at adjusted positions without requiring external tools. The block can be manually moved to different locations and then self-secured through the locking mechanism, enabling tool-free adjustments while maintaining position stability.
3Adaptability or versatility
If a slot is provided in a plate of the truck for the sliding mechanism, then the truck can accommodate variable positions, but the presence of the slot weakens the truck
Solution Approach 1:
Instead of using a slot that compromises the truck structure, the design segments the truck into multiple discrete positioning points or uses a series of holes that can accommodate the sliding mechanism. This approach provides variable position capability while maintaining the overall structural strength of the truck by minimizing material removal.
4Manufacturing precision
If tool-based adjustments are used in conventional bridge and truck designs, then precise positioning can be achieved, but tools may drop down into the press causing damage
Solution Approach 1:
The design incorporates self-locking and self-positioning mechanisms that eliminate the need for external tools during adjustment and operation. The bridge and truck components can be precisely positioned and secured through integrated mechanisms that prevent tool drop into the press, thereby maintaining positioning precision while improving safety and reliability.
5Force
If mechanical bridge clamps are used to put pressure on die and anvil rollers, then pressure can be applied, but operators have to repeat the pressure set-up by feel with every changeover
Solution Approach 1:
The bridge clamp design incorporates preliminary positioning features or pre-set pressure mechanisms that allow operators to quickly reapply pressure settings from previous operations. This may include memory features, preset positions, or standardized clamp configurations that eliminate the need to重新 adjust pressure by feel during changeovers, thereby reducing setup time while maintaining proper pressure application.
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
The solution enables quick, accurate, and safe die pressure setup, reducing downtime, extending rotary life, improving product quality, and increasing throughput by eliminating stoppages and human error.
Implementation Method 1
spring-loaded brake leaves and magnetic locking mechanisms
Implementation Method 2
spring-loaded brake leaves and magnetic locking mechanisms
Implementation Method 3
utilizing hydrajacks and lubrication systems for enhanced stability and safety
Data Source
AI summary
A rotary device including a bridge attached to a frame of the rotary device, and a truck disposed adjacent to the bridge and configured to support at least two block assemblies thereof, wherein the at least two block assemblies are configured to be moveable with respect to each other. The truck includes a shaft such that the at least two block assemblies slide on the shaft and locks in place at different locations along the shaft, wherein a downward force is applied against a top portion of the at least two block assemblies to apply pressure against a topmost roller of the plurality of rollers.