Base Paper Roll Stand Layout for Automatic Splicing Preparation

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Solution Overview

Problem

The frequent switching of orders in paper splicing preparation work leads to a high burden on workers, necessitating a reduction in the manual effort required for setting base paper rolls with attached double-sided tapes on mill roll stands.

Innovation Solution

The paper roll handling equipment is designed with specific mill roll stands that support and manage paper rolls for top, medium, and bottom liners, with the paper roll for replacement positioned strategically to facilitate automatic splicing, including a method where rolls for replacement are moved along or against the supply direction to align with the main rolls for seamless integration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If paper splicing preparation work is performed manually by workers for each mill roll stand, then the base paper rolls can be set with double-sided tape attached, but the work burden on workers increases significantly when orders are frequently switched

Engineering Contradiction:
Improvepaper splicing preparation workVSAvoidwork burden on workers
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The invention applies preliminary action by pre-attaching double-sided tape to the base paper rolls in advance before they are transported to and installed on the mill roll stands. This preparation is done at a centralized location rather than at each individual stand, eliminating the need for workers to perform repetitive tape attachment operations at multiple locations when order changes occur.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If multiple mill roll stands are equipped with splicers for automatic paper splicing, then continuous base paper supply is achieved, but the frequency of paper splicing preparation work increases with frequent order switches

Engineering Contradiction:
Improvecontinuous base paper supplyVSAvoidfrequency of splicing preparation work
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The invention extracts the paper splicing preparation operation from the mill roll stands themselves and relocates it to a centralized preparation area. The double-sided tape is attached to base paper rolls in this separate location before they are transported to the mill roll stands, thereby removing the preparation workload from the stands while maintaining their splicing functionality.

Inventive Principle:
Principle #2Taking out (Extraction)

3Extent of automation

If base paper rolls with pre-attached double-sided tape are set on mill roll stands, then automated splicing can be performed, but the logistics of transporting and positioning these prepared rolls becomes more complex

Engineering Contradiction:
Improveautomatic splicingVSAvoidlogistics of roll transport and positioning
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The invention prepares base paper rolls with double-sided tape attached in advance at a centralized location, allowing them to be transported and positioned at the mill roll stands without requiring additional preparation steps. This preliminary preparation simplifies the logistics at the stands themselves, as the rolls arrive ready-for-use and can be directly installed for automated splicing operations.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12454431B2Base paper roll supply device, base paper roll supply method, and device for manufacturing cardboard sheet
Publication Date: 2025.10.28 MITSUBISHI HEAVY IND MACHINERY SYST LTD
  • US12454431B2 patent drawing
  • US12454431B2 patent drawing
  • US12454431B2 patent drawing

AI summary

A base paper roll supply device includes: a first stand rotatably supporting a rear-liner base paper roll and a rear-liner replacement base paper roll; a second stand rotatably supporting a core base paper roll and a core replacement base paper roll; and a third stand rotatably supporting a front-liner base paper roll and a front-liner replacement base paper roll. The first stand, the second stand, and the third stand are arranged in order along a supply direction in which the rear liner, the core, and the front liner are supplied. At the first stand, the rear-liner replacement base paper roll is arranged at an upstream side in the supply direction with respect to the rear-liner base paper roll, and at the third stand, the front-liner replacement base paper roll is arranged at a downstream side in the supply direction with respect to the front-liner base paper roll.