Dual-Device Folding Machine for Three-Fold Fiber Products

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Solution Overview

Problem

Conventional fiber product folding machines are limited to producing twofolds and lack efficiency in folding fiber products into three folds, as they typically use single-sided folding devices that cannot effectively produce three-folded products.

Innovation Solution

A folding machine design featuring two folding devices working in tandem, each with a cutting device, delivery wheel, folding-line wheel, platen wheel, and folding wheel, to create two folding lines on the fiber products, allowing for alternating and overlapping folds to achieve three-folded stacks with improved efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a single-sided folding device is used to fold fiber products, then the device structure is simple, but the folding efficiency for three-fold products is low

Engineering Contradiction:
Improvefolding efficiencyVSAvoiddevice structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent combines two folding devices into a single integrated machine, where the first folding device folds the fiber product in one direction and the second folding device folds it in a perpendicular direction, achieving three-fold products with improved efficiency while sharing common components like the delivery wheel and control system

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The folding process is segmented into two distinct stages: the first folding device creates an initial fold, and the second folding device creates a perpendicular fold. This segmentation allows each device to specialize in one folding direction, improving overall efficiency for three-fold products

Inventive Principle:
Principle #1Segmentation

2Productivity

If two folding devices are disposed at two sides to fold fiber products, then the folding efficiency is enhanced, but the devices can only produce twofolds, not three folds

Engineering Contradiction:
Improvefolding efficiencyVSAvoidfolding capability
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent introduces a second dimensional folding direction by positioning the second folding device perpendicular to the first folding device. This dimensional change transforms the output from simple twofolds to complex three-folds, where the fiber product is folded in both horizontal and vertical directions

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Speed

If the differential wheel and first folding wheel have different perimeters, then the fiber product can be transported, but overlapping occurs during transport

Engineering Contradiction:
Improvetransport speedVSAvoidfolding precision
Core Design Contradiction:
SpeedVSManufacturing precision

Solution Approach 1:

The patent makes the rotating speeds of the differential wheel and first folding wheel adjustable and independent, allowing dynamic control of the transport process. This enables synchronization of the folding operation with the transport speed, preventing overlapping while maintaining efficient transport

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11345563B2Folding machine for folding fiber products and stack of fiber products produced thereby
Publication Date: 2022.05.31 CHAN LI MACHINERY CO LTD
  • US11345563B2 patent drawing
  • US11345563B2 patent drawing
  • US11345563B2 patent drawing

AI summary

A folding machine for folding fiber products and fiber products formed and stacked thereby are disclosed. The folding machine includes two folding devices, each of which includes a cutting device, a delivery wheel, a folding-line wheel, a platen wheel, and a folding wheel. The cutting device cuts the fiber product and transports the cut fiber product to the delivery wheel. The folding-line wheel is adjacent to the delivery wheel for making a first folding line on the fiber product carried by the delivery wheel, and then the platen wheel folds the fiber product along the first folding line. Subsequently, the once-folded fiber product is transported to the folding wheel. The folding wheels of the two folding devices are adjacent to each other and are used to fold the fiber product passing therethrough for a second time, and thus fiber products with three folds are formed.