ISO 13435:2011

Overview

ISO 13435:2011 is an international standard that specifies the dimensions and tolerances for bars used in drop wires for electrical warp stop motions in textile machinery. These bars are essential components in the textile manufacturing process, specifically designed for controlling warp yarns on weaving machines. The standard covers two types of contact rail bars: those with a continuous contact rail (form E1) and those with an inner split contact rail (form E2).

Developed by ISO Technical Committee ISO/TC 72, which focuses on textile machinery and accessories, ISO 13435:2011 ensures consistent quality, interchangeability, and compatibility of parts used in electrical warp stop motions across different machinery manufacturers worldwide.

Key Topics

• Dimensions and Tolerances
  The standard provides detailed specifications for the dimensions (width, height, length) and permissible tolerances of bars for drop wires, vital for ensuring functionality and reliable performance in warp stop systems.

• Forms of Contact Rails

  • Form E1: Bars with a continuous inner contact rail designed for uniform electrical contact.
  • Form E2: Bars with an inner split contact rail suited for separate control of the left and right halves of the weaving machine.

• Designation System
  Each bar is clearly designated using ISO 13435:2011 along with details including the form, bar width, height, and length. For example:
  Bar for drop wire ISO 13435 - E1 - 4 × 23 × 1600

• Material Specifications

  • Contact rails can be made from copper-zinc alloy, steel, or aluminium, depending on manufacturer choices.
  • Insulation uses thermoplastic foil to ensure electrical isolation.

• Construction Variations
  The type of inner contact rail (smooth or toothed) and rail end designs are subject to agreement between manufacturers and customers, allowing customization while maintaining standard dimensions.

Applications

ISO 13435:2011 plays a crucial role in textile weaving and fabric manufacturing, particularly in systems that prevent warp breakage during weaving by automatically stopping the loom. These bars for drop wires are integral components of electrical warp stop motions, which enhance:

• Machine efficiency by timely detecting broken warp threads
• Reduced downtime by minimizing fabric defects
• Improved safety and machine automation in weaving operations

Textile machinery manufacturers, component suppliers, and end-users rely on this standard for purchasing, quality control, and machine maintenance, facilitating interoperability across different equipment brands and models.

Related Standards

ISO 13435:2011 is part of a broader suite of standards dedicated to textile machinery, including:

• ISO 13032 - Warp stop motions - Terms and definitions
• ISO 23125 - Textile machinery - Warp stop motion functions and testing
• ISO 7322 - Textile machinery and accessories - Guide to safety
• IEC 60204-1 - Safety of machinery - Electrical equipment of machines (general)

Adherence to ISO 13435 complements these standards by ensuring specific mechanical dimensions and materials align with overall safety, electrical, and operational requirements in the textile industry.

Keywords: ISO 13435, textile machinery standards, bars for drop wires, electrical warp stop motions, textile weaving, warp stop system, contact rail bars, textile manufacturing accessories, weaving machine components, ISO textile standards