Overview
ISO 364:1983 is an international standard developed by the International Organization for Standardization (ISO) that specifies types and dimensions for twin wire healds used in weaving machines equipped with heald frames. This standard provides clear classification and dimensional guidelines for twin wire healds, an essential component in textile machinery responsible for controlling warp threads during the weaving process. ISO 364:1983 replaces the earlier ISO Recommendation R 364-1967 with updated technical revisions to enhance precision and interoperability in textile production.
Key Topics
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Twin Wire Heald Types
The standard identifies two primary types of twin wire healds:
- Type F: Twin wire healds with a formed thread eye
- Type M: Twin wire healds with an inset mail (a small inserted eye)
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Dimensional Specifications
ISO 364 provides exact dimensional parameters necessary for the manufacture and classification of twin wire healds, including:
- Thickness of wire (ranging from 0.25 mm to 0.9 mm and above)
- Internal lengths and widths of end loops, formed eyes, and inset mails
- Distances inside end loops, crucial for fitting on heald frames
- Orientation of thread eyes, designated as open to the right (R) or left (L), with a preference for right-opening thread eyes to ensure standardization
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Designation System
The standard outlines a systematic designation structure detailing:
- Type of twin wire heald (F or M)
- Direction of thread eye (L or R)
- Wire thickness
- Distance inside end loops
- Dimensions of end loops and thread eyes/inset mails
This formalized designation facilitates clear communication between manufacturers, suppliers, and machinery operators.
Applications
ISO 364:1983 is primarily applied in the design, manufacture, and quality control of weaving machines and textile machinery accessories, particularly focusing on:
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Weaving Machine Manufacture
Ensures compatibility and interchangeability of twin wire healds in various weaving machines by standardized dimensions and classifications.
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Textile Industry Quality Assurance
Enables manufacturers and textile engineers to maintain consistent performance and reliability in warp thread control during weaving, contributing to fabric quality and production efficiency.
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Spare Parts Standardization
Facilitates the supply chain management of twin wire healds by providing a universally accepted reference for size and type, reducing complexity in procurement and maintenance.
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Technical Training and Documentation
Provides clear guidelines for technical personnel and engineers involved in machine setup, maintenance, and specifications drafting for textile manufacturing.
Related Standards
For comprehensive understanding and integration within textile machinery fields, ISO 364:1983 may be used alongside other relevant ISO standards, such as:
- ISO 14704 – Textile machinery - Mechanical components for weaving machines
- ISO 18727 – Textiles - Tension measurement of warp yarns
- ISO 3914 – Textile machinery - Effects of vibration on performance
- ISO 1761 – Textile machinery - Yarn preparation
Using ISO 364 in conjunction with these standards supports a holistic approach to textile machinery design and operation, promoting interoperability and enhanced production outcomes.
Keywords: ISO 364, twin wire healds, weaving machines, textile machinery, heald frames, heald dimensions, textile standards, woven fabric production, heald designation, textile manufacturing standards
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