Adjustable Circular Housing for Multi-Size Paper Log Cutting

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Solution Overview

Problem

Existing machines for cutting paper logs into rolls are limited to cutting logs of the same size, requiring manual intervention and potential deformation of logs due to vertical compression forces, and interference with log advancement.

Innovation Solution

The apparatus features mobile walls with a C-shaped upper gripping portion and a lower supporting portion connected by pins, with a cursor mechanism that adjusts the diameter of the circular housings without generating vertical compression, allowing logs of various sizes to be cut without manual intervention or deformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If fixed-size housings are used for cutting logs, then cutting precision is maintained, but the machine cannot process logs of different sizes without manual intervention

Engineering Contradiction:

Improveability to process logs of different sizesVSAvoidmachine stoppage time for manual housing replacement

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The housing structure is transformed from a fixed configuration to a dynamic, adjustable one. The housing comprises mobile walls that can be moved between different positions to adapt to logs of varying diameters. This dynamic structure allows the housing to maintain stable containment for different log sizes without requiring manual replacement of entire housing units, thus resolving the contradiction between adaptability and operational continuity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The housing structure is designed to perform multiple functions: it can accommodate and stably contain logs of different diameters through its adjustable mobile walls, eliminating the need for separate housings for different log sizes. This universal design allows a single housing structure to replace multiple fixed-size housings, enabling the machine to process various log sizes without stopping.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If mobile walls with actuators are used to adjust housing diameter, then adaptability to different log sizes is achieved, but vertical compression forces deform the logs

Engineering Contradiction:

Improveadjustable housing diameter for different log sizesVSAvoidlog deformation due to vertical compression

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The actuator mechanism is redesigned to apply force horizontally rather than vertically. Instead of pressing down on the mobile walls from above, the actuator moves the mobile walls horizontally along the housing perimeter. This dimensional change in force application eliminates vertical compression on the logs while still achieving the desired adjustment of housing diameter to match different log sizes.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The conventional approach of applying containment force from above (vertical direction) is inverted. The mobile walls are actuated to move horizontally, applying containment force in the horizontal plane rather than vertically. This inversion of the force application direction eliminates log deformation while maintaining stable containment, resolving the contradiction between adaptability and log integrity.

Inventive Principle:

Principle #13The other way round (Inversion)

3Stability of the object's composition

If a cover element is used to clamp mobile walls against logs, then stable containment is achieved, but the cover interferes with log advancement

Engineering Contradiction:

Improvestable containment of logs in housingVSAvoidlog advancement through the housing

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The cover element that was pressing down on the housing from above is completely removed from the system. Instead of using vertical clamping force from a cover, the mobile walls are actuated horizontally to provide stable containment. This extraction of the harmful cover element eliminates the interference with log advancement while maintaining stable containment through the horizontal actuation mechanism.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The actuator serves as an intermediary mechanism that provides stable containment through horizontal wall movement rather than vertical clamping. This intermediary approach replaces the direct vertical pressure from a cover element with a controlled horizontal actuation system, eliminating log advancement interference while achieving the desired stable containment.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS8950306B2Apparatus for cutting paper logs in a plurality of rolls

Publication Date: 2015.02.10 GAMBINI INT

AI summary

An apparatus for cutting paper logs in a plurality of rolls is disclosed. The apparatus has at least one longitudinal input channel and at least one output channel defining circular housings and being arranged in a succession among them. The channels have mobile walls with an upper mobile portion and a lower mobile portion. The lower mobile portion is connected with a structure for supporting the apparatus on one side and with an intermediate portion of the upper mobile portion on another side. The upper mobile portion has a free upper end and a base end connected to a movable cursor. A mobile actuator for moving the walls, which engages the upper mobile portion at the base end is also provided.