A unit for thermosetting printed fabrics
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Solution Overview
Problem
Existing digital textile printing systems lack the ability to dynamically adjust the winding angle of fabrics on heated rollers, which limits the flexibility in thermosetting processes based on printing speed, material type, and ink usage, affecting the quality of the thermosetting process.
Innovation Solution
A thermosetting unit with adjustable guiding elements that allow for varying the contact angle of the fabric with the heated roller, enabled by a rotatable adjusting device and suction system for fume extraction, integrated into a textile printer or as a standalone unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed contact angle between fabric and heated roller is used, then the structure is simple, but the adaptability to different printing conditions is poor
Solution Approach 1:
The patent applies the dynamics principle by making the contact angle between the fabric and heated roller adjustable rather than fixed. The guiding element can be rotated around the heated roller axis, allowing the contact angle to be dynamically changed according to different printing speeds, material types, and ink formulations, thereby resolving the contradiction between structural simplicity and adaptability to varying printing conditions.
2Manufacturing precision
If the contact angle is fixed, then the device is easy to operate, but the thermosetting quality cannot be optimized for different parameters
Solution Approach 1:
The guiding element's rotatable design allows the contact angle to be dynamically adjusted to optimize thermosetting quality for different printing parameters such as speed, resolution, and material type, while maintaining ease of operation through a simple rotational adjustment mechanism that can be easily manipulated by the operator.
3Duration of action of moving object
If the fabric wraps almost completely around the heated roller, then the contact time is maximized, but the flexibility to adjust processing parameters is reduced
Solution Approach 1:
The rotatable guiding element enables dynamic adjustment of the contact angle, allowing the contact time between fabric and heated roller to be optimized for different printing conditions. The guiding element can be positioned at different angular locations around the heated roller, providing flexibility to adjust processing parameters while maintaining appropriate contact time for effective thermosetting.
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
This solution enhances the quality of the thermosetting process by allowing adjustable contact time and preventing defects, while simplifying fabric insertion and maintaining efficient fume management.
Implementation Method 1
The working temperature on the outer surface of the heated roller in contact with the fabric can be between 100-200°C. Heating of the heated roller can be obtained by means of diathermic oil circulating inside the heated roller in contact with the outer surface
Implementation Method 2
a suction system for fume extraction
Data Source
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AI summary
A unit for thermosetting printed fabrics, comprising: - a heated roller (16) rotating about a rotation axis (A) and having a cylindrical outer surface, - at least one fabric guiding element (22) having an inner wall (26) facing the cylindrical outer surface of the heated roller (16) and defining a gap with the cylindrical outer surface of the heated roller (16), for passing the fabric wherein said fabric guiding element (22) is carried by an adjusting device (40) rotatable about said rotation axis (A) to adjust the angular position of said guiding element (22) about said rotation axis (A).