Self-Restoring Pressure Element for Cylindrical Body Reception

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Solution Overview

Problem

Existing methods for receiving and stopping cylindrical bodies in the papermaking industry are inefficient in terms of energy consumption and receiving capability, with conventional pneumatic and hydraulic systems using excessive energy and steel stoppers being slow and prone to energy rebound.

Innovation Solution

The method employs tight, self-restoring pressure elements, such as hoses or bellows with self-restoring porous material, where the motion speed of cylindrical bodies is decelerated by adjusting the inflow and outflow of compressed air, allowing for controlled reception without continuous energy supply, using adjustable outlet flues and electromagnetic valves for optimal performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If pneumatic or hydraulic cylinders are used for receiving cylindrical bodies, then the receiving capability is improved, but the energy consumption increases remarkably

Engineering Contradiction:
Improvereceiving capabilityVSAvoidenergy consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The invention uses a dynamically adjustable pneumatic spring system where the stiffness and damping characteristics can be varied during operation. The pneumatic cylinder's pressure and flow characteristics are modulated to provide optimal receiving performance across different operating conditions, replacing the static high-energy pneumatic/hydraulic cylinder system.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes physical parameters (pressure, flow rate, stiffness) of the pneumatic spring dynamically during the receiving process. By adjusting these parameters, the system achieves effective receiving capability while consuming significantly less energy than conventional systems that rely on high-pressure pneumatic or hydraulic cylinders.

Inventive Principle:
Principle #35Parameter changes

2Use of energy by moving object

If a steel stopper is used for receiving cylindrical bodies, then the energy consumption is reduced, but the receiving properties deteriorate and the process takes a long time

Engineering Contradiction:
Improveenergy consumptionVSAvoidreceiving properties
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The invention introduces a pneumatic spring as an intermediary between the cylindrical body and the steel stopper. This pneumatic element provides a compliant, energy-absorbing interface that improves receiving properties compared to direct steel-on-steel contact, while still maintaining low energy consumption through controlled air discharge.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention applies pneumatic principles by using a pneumatic spring (compressed air reservoir) to provide the receiving action. The controlled discharge of compressed air through regulated openings creates a damping effect that improves receiving performance without the high energy consumption of powered pneumatic cylinders.

Inventive Principle:
Principle #29Pneumatics and hydraulics

3Force

If pneumatic bellows or hose are used to intensify receiving force, then the receiving force is increased without energy consumption, but the cylindrical body receives its energy back during return motion

Engineering Contradiction:
Improvereceiving forceVSAvoidenergy rebound
Core Design Contradiction:
ForceVSLoss of energy

Solution Approach 1:

The invention extracts and dissipates the rebound energy through controlled discharge openings in the pneumatic spring. By providing regulated pathways for air escape, the system removes the energy that would otherwise be returned to the cylindrical body during its return motion, preventing the harmful rebound effect while maintaining the force-intensification benefit.

Inventive Principle:
Principle #2Taking out (Extraction)

4Reliability

If the receiving is performed by removing energy from a large cylinder, then the receiving takes place effectively, but the energy consumption is remarkable

Engineering Contradiction:
Improvereceiving effectivenessVSAvoidenergy consumption
Core Design Contradiction:
ReliabilityVSUse of energy by stationary object

Solution Approach 1:

The invention uses periodic action through the controlled discharge of compressed air in stages. The regulated openings allow air to escape in a controlled manner during the receiving process, creating a progressive energy dissipation effect that maintains receiving effectiveness while minimizing the total energy that must be supplied to and removed from the system.

Inventive Principle:
Principle #19Periodic action

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 approach significantly reduces energy consumption while improving the receiving capability, enabling efficient and controlled deceleration of cylindrical bodies without energy rebound, thus providing cost savings and enhanced functionality.

Implementation Method 1

the apparatus for carrying out the method according to the invention restores to receiving readiness due to self-restoring material

Methodology Applied
Scientific EffectElastic recovery: Elastic Recovery

Implementation Method 2

the motion speed of a cylindrical body is decelerated by adjusting the amount of air being let out

Methodology Applied
Scientific EffectCompression: Compression

Implementation Method 3

the receiving and deceleration of the cylindrical body occurs by controlling the amount of air being let out

Methodology Applied
Scientific EffectPneumatic pressure: Pressure Increase

Data Source

PatentEP2989034B1Method for receiving paper reels in papermaking industry
Publication Date: 2020.10.14 SOVELLUSMESTARIT
  • EP2989034B1 patent drawingFigure 1
  • EP2989034B1 patent drawingFigure 2
  • EP2989034B1 patent drawingFigure 3

AI summary

The invention relates to a method and an apparatus for receiving cylindrical bodies (1; 1, 16). In the method according to the invention, the receiving utilises tight, self-restoring pressure elements (7), in which by adjusting the inflow and/or outflow of compressed air, the motion speed of the cylindrical body (1; 1, 16) is decelerated. The apparatus according to the invention includes a pressure element (7) within the elastic and tight material of which is installed self-restoring porous material (10). Furthermore, the invention relates to the use of the method and the apparatus for receiving a cylindrical body.