Pre-winding Roller Tissue Paper Winding Mechanism

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Solution Overview

Problem

Conventional tissue paper winding mechanisms require additional control units for rotation speed or cutter actuation, and struggle with winding tough materials, as they cannot pre-wind tissue paper around a core before cutting.

Innovation Solution

A tissue paper winding and cutting machine with a pre-winding roller that creates a narrowed passage between the first winding roller and a core support plate, allowing the tissue paper to be pre-wound and broken by a slower rotating pre-winding roller without additional control units, enabling the winding of tough materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a cutter or rotating device is used to separate tissue paper, then the tissue paper can be cut, but additional control units or stroke and timing control devices are required

Engineering Contradiction:

Improvetissue paper separationVSAvoidcontrol unit

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The tissue paper separation is achieved through the self-service mechanism of the pre-winding roller rotating in the opposite direction to create speed difference, which automatically pulls the tissue paper apart without requiring external control units or timing devices

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The pre-winding roller performs preliminary winding action on the tissue paper before separation occurs, creating the necessary tension and configuration that enables automatic separation through speed differential alone

Inventive Principle:

Principle #10Preliminary action

2Reliability

If a cutter is used to cut tissue paper, then the tissue paper can be separated, but a stroke and timing control device is required

Engineering Contradiction:

Improvetissue paper separationVSAvoidstroke and timing control device

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system eliminates the need for stroke and timing control devices by using the pre-winding roller's opposite rotation to automatically generate the separation force through speed differential, making the process self-regulating

Inventive Principle:

Principle #25Self-service

3Strength

If the rotation speed difference between the first winding roller and rotating device is increased to pull apart tough tissue paper, then the tissue paper can be separated, but control complexity increases

Engineering Contradiction:

Improvetissue paper toughnessVSAvoidcontrol unit

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

Instead of rotating the first winding roller faster to pull apart tough tissue paper, the pre-winding roller rotates in the opposite direction at controlled speed, creating the necessary tension and separation force through reverse rotation rather than speed increase

Inventive Principle:

Principle #13The other way round (Inversion)

4Ease of manufacture

If conventional winding mechanism is used, then tissue paper can be wound around core, but the tissue paper must be cut before winding

Engineering Contradiction:

Improvewinding processVSAvoidcutter and control device

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The pre-winding roller performs preliminary winding of the tissue paper around the core before the separation action occurs, reversing the conventional sequence and enabling wound paper logs to be produced without pre-cutting

Inventive Principle:

Principle #10Preliminary 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

Enables efficient cutting and winding of tissue paper without additional control units and effectively handles tough materials by pre-winding and breaking the paper using a slower rotating pre-winding roller, ensuring firm clamping and complete separation.

Implementation Method 1

the pre-winding roller is rotated in a direction opposite to the predetermined moving direction of the tissue paper at a rotation speed slower than that of the first winding roller

Methodology Applied

Scientific EffectSpeed difference:

Implementation Method 2

the tissue paper which is attached to the glue on the second core and winds around the circumferential surface of the second core while being clamped by and between the first winding roller and the pre-winding roller

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 3

a second core having a length of glue applied thereto is moved from the loading end into the channel and rolls to the narrowed passage in the channel

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS7469856B1Tissue paper winding and cutting machine with pre-winding roller

Publication Date: 2008.12.30 CHAN LI MACHINERY CO LTD

AI summary

A tissue paper winding and cutting machine includes a first winding roller, at least one core support plate arranged near the first winding roller to form a channel between them, and a pre-winding roller arranged near and below the first winding roller with a circumferential surface facing toward the first winding roller and protruding into the channel to form a narrowed passage in the channel. The pre-winding roller rotates about a shaft thereof in a direction opposite to a predetermined moving direction of a tissue paper to be wound around cores, and at a rotation speed slower than that of the first winding roller. With the rotation speed difference between the pre-winding roller and the first winding roller, a core moved into the channel is temporarily held at the narrowed passage, so that the tissue paper fed into the channel is wound around the core before being pulled broken.