Sealing machine for textile articles of manufacture
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Solution Overview
Problem
Sealing machines for textile articles face difficulties in processing articles with complex geometries and tortuous paths, as they require reduced feed speeds, leading to decreased productivity and compromised tape application quality due to overheating and cooling issues.
Innovation Solution
The use of conveyor rollers with diameters smaller than 20 mm allows for improved handling and efficient sealing along tortuous paths and close-radius curves by reducing the retaining action on the article, facilitating faster processing without compromising quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conveyor rollers with larger diameters are used, then the retaining action on the article is increased, but the ability to handle tortuous paths and close-radius curves is reduced
Solution Approach 1:
The patent applies parameter changes by reducing the diameter of the conveyor rollers from conventional sizes (typically 50-100 mm) to less than 20 mm. This parameter modification reduces the retaining action force while improving the ability to navigate tortuous paths and close-radius curves, directly resolving the technical contradiction between retaining force and ease of operation on complex geometries
2Manufacturing precision
If feed speed is reduced for tortuous paths, then tape application quality is improved, but productivity is decreased
Solution Approach 1:
The patent resolves this contradiction by changing the parameter of roller diameter, which fundamentally alters the dynamics of tape application. The smaller rollers enable high-speed processing while maintaining tape quality by reducing the retaining action that causes overheating and cooling issues, allowing both high productivity and manufacturing precision to be achieved simultaneously
3Temperature
If feed speed is reduced for tortuous paths, then overheating is mitigated, but tape cooling excessively before reaching rollers
Solution Approach 1:
The patent applies parameter changes by reducing roller diameter, which shortens the residence time of the tape in the heating zone and reduces the retaining action. This allows faster feed speeds to be used while maintaining optimal tape temperature, preventing both overheating and excessive cooling, and resolving the contradiction between temperature control and productivity
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 enables rapid and optimal sealing along complex paths and curves, enhancing productivity and maintaining tape quality by minimizing overheating and cooling, thus allowing for effective application of heat-sealable tapes on articles with intricate geometries.
Implementation Method 1
the heating unit directs the flow of hot air on the tape near the guide, next to the area in which the tape itself and the article of manufacture, mutually coupled, are inserted between the conveyor rollers. The subsequent heating determines the activation of the heatfix agent
Data Source
Figure 1
Figure 2
AI summary
In a sealing machine for textile articles of manufacture, a conveying group (5) comprising a first conveyor member (6) cooperating with a second conveyor member (7) for translating an article of manufacture ("M") being processed according to a predetermined feed direction ("A"). The first conveyor member (6) comprises a first roller (6) acting on the article of manufacture ("M") being processed by means of a dragging surface (6a, 7a) having a diameter ("d") of less than 20 mm. The first roller (6) is rotatably engaged to one end (8a) of an arm (8) overhanging from a fixed structure, according to a rotation axis ("Xi") parallel to a longitudinal development direction of the arm (8). The dragging surface (6a) of the first conveyor roller (6) has a diameter ("d") smaller than, of preferably less than ½, diametrical dimension ("E") of the arm (8) at said end (8a).