Web Guide Rocking Frame Roller Mechanism
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Solution Overview
Problem
Existing web guiding apparatuses face challenges in maintaining smooth operation and durability against forces applied from webs in environments with airborne paper powder and dust, as they tend to fail due to powder accumulation, leading to meandering issues.
Innovation Solution
A web guiding apparatus with a rocking frame that rocks around a perpendicular axis, featuring rollers with surface contact on a parallel rolling surface, which supports forces from the web and effectively removes accumulated paper powder by rolling perpendicular to the axial direction, ensuring stable operation and enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If guide balls are held by holders to support the movable table, then the movable table can smoothly rock to prevent web meandering, but paper powder accumulates between the holder and guide ball, blocking the space and preventing smooth movement
Solution Approach 1:
The patent removes the holder component entirely and replaces it with a link mechanism comprising shafts and link members that directly support the movable table. This extraction eliminates the space between holder and guide ball where paper powder accumulated, thereby preventing the blocking issue while maintaining smooth rocking operation.
Solution Approach 2:
The patent introduces link members as intermediary components between the shafts and the movable table. These link members provide a new support path that avoids direct contact points vulnerable to paper powder accumulation, mediating the support function while eliminating the harmful accumulation space.
2Reliability
If link mechanisms with shafts and link members are used to support the movable table, then durability against paper powder is improved, but durability against force applied from the web in the axial direction of shafts deteriorates
Solution Approach 1:
The patent merges the support functions for both paper powder resistance and web force resistance into a single integrated link mechanism. The link members are designed to simultaneously handle radial forces (resisting paper powder accumulation) and axial forces (resisting web tension), combining multiple durability requirements into one robust structure.
Solution Approach 2:
The link mechanism uses composite structural design where link members with specific geometric configurations provide both radial support capability and axial load-bearing capacity. The combination of shafts and link members creates a composite support system that delivers dual durability against different types of forces.
3Productivity
If the web guiding apparatus is used in environments with airborne paper powder and dust, then production continues, but powder accumulates between components, causing failure in rocking operation
Solution Approach 1:
The patent removes vulnerable components (holders) that create accumulation spaces, eliminating the weakness point where paper powder would block operation. This extraction allows continuous production to proceed without interruption from powder accumulation failures.
Solution Approach 2:
The link mechanism design allows the system to naturally resist paper powder accumulation through its open structure and lack of enclosed spaces. The design itself provides resistance to the harmful environment without requiring additional protective measures, enabling continuous operation in dusty conditions.
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 apparatus effectively prevents web meandering by maintaining smooth operation and durability, even in environments with airborne paper powder, by supporting forces through surface contact and removing powder accumulation, thus reducing the likelihood of rocking frame failure.
Implementation Method 1
the force applied from the web is supported by surface contact of the roller with the rolling surface
Implementation Method 2
the roller rolls so as to intersect an axial direction of the rolling surface, the roller can remove paper powder and the like from the rolling surface
Data Source
Figure 1
Figure 2
Figure 3(A)~3(B)
AI summary
Provided is a web guiding apparatus capable of ensuring a smooth operation and durability against a force applied from a web even if the apparatus is used in an environment with airborne paper powder, dust and the like. The web guiding apparatus includes a rocking frame 4 rocking around an axis perpendicular to a reference surface 2s of the base 2, and a support portion 40 supporting movement of the rocking frame 4 with respect to the base 2. The support portion 40 includes a base member 41 provided on the base 2 and having a rolling surface parallel to the reference surface 2s of the base 2, and a roller 46 provided on the rocking frame 4 so as to roll on the rolling surface of the base member 41. The rolling surface of the base member 41 is formed so that an axial direction thereof intersects an arc with a rocking shaft 3 of the rocking frame 4 as a center. A width of the roller 46 is wider than a width of the rolling surface of the base member 41. The roller 46 is provided so as to move along the arc with the rocking shaft 3 of the rocking frame 4 as the center when the rocking frame 4 rocks.