Automatic Reinforcing Sheet Introduction for Coreless Roll Winding
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Solution Overview
Problem
Existing coreless winding machines produce rolls of continuous strip material with insufficient crushing strength, necessitating the use of costly and space-consuming cardboard cores.
Innovation Solution
A device for automatically introducing a reinforcing sheet, such as paper, into the coreless roll during winding, using a conveyor system with inclined conveyor members and a guide member to ensure the sheet is inserted homokinetically with the winding speed, enhancing roll rigidity without cardboard cores.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If cardboard cores are used to support wound material, then roll structural strength is improved, but manufacturing cost and storage requirements increase
Solution Approach 1:
The invention extracts and eliminates the cardboard core from the winding system, replacing it with a coreless design where the reinforcing sheet is introduced directly into the wound roll during the winding process, thereby removing the need for separate core manufacturing and storage
Solution Approach 2:
The invention replaces expensive, reusable cardboard cores with inexpensive, disposable reinforcing sheets that are consumed during the winding process and remain within the final roll structure, eliminating the need for costly core recovery and reuse operations
2Strength
If cardboard cores are used to support wound material, then roll structural strength is improved, but storage space and handling complexity increase
Solution Approach 1:
The invention removes the bulky cardboard core from the system, replacing it with a compact coreless design where the reinforcing sheet is integrated directly into the roll structure, significantly reducing the volume required for storage and handling
3Ease of manufacture
If coreless winding is used to eliminate cardboard cores, then manufacturing cost is reduced, but roll crushing strength becomes insufficient
Solution Approach 1:
The invention introduces a reinforcing sheet as an intermediary element between the wound layers of continuous strip material, providing the necessary structural strength and rigidity to the coreless roll while maintaining the cost advantages of the coreless design
Solution Approach 2:
The invention creates a composite structure by combining the continuous strip material with the reinforcing sheet, where the two materials work together to provide both the flexibility needed for winding and the strength required for the final roll structure
4Strength
If reinforcing sheet is introduced during winding, then roll crushing strength is improved, but device complexity increases
Solution Approach 1:
The invention merges the reinforcing sheet introduction function with the existing winding operation, using the same drive roller and winding mechanism to simultaneously wind the continuous strip material and introduce the reinforcing sheet, thereby avoiding the need for separate introduction devices
Solution Approach 2:
The invention makes the drive roller multi-functional by enabling it to perform both the winding function (winding continuous strip material) and the reinforcing sheet introduction function, thereby reducing device complexity while achieving the desired roll strength
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 reinforced coreless rolls achieve sufficient crushing strength and operational efficiency, eliminating the need for cardboard cores, reducing costs and storage requirements while maintaining high productivity.
Implementation Method 1
a first conveyor member (44) and a second conveyor member (45) placed in sequence along an inclined path
Implementation Method 2
the first conveyor member (44) comprises a series of idle rollers (55) arranged at one end of respective arms (56) hinged onto support bars (57) to form gravity pressing means for the paper sheets (51)
Implementation Method 3
the second conveyor member (45) comprises a belt presser (58) placed above the conveyor belts (46)
Data Source
AI summary
A device is for automatically introducing a reinforcing sheet into a coreless coil applicable to a coreless winding machine. The winding machine includes such a device. In particular, a device is for introducing a reinforcing paper sheet into a coreless roll being wound with a continuous strip material by a coreless winding machine. The device includes a feeding tray for paper sheets, a feeder of the paper sheets taken from the feeding tray, and an introduction member of a paper sheet loaded into a roll being wound in the winding machine.