GB/T 30420.2-2019 in English

Standard Framework and Technology Evolution

GB/T 30420.2—2019, as the second part of the sewing machine terminology system, focuses on the professional field of embroidery machines and constructs a terminology system with six modules, including basic terminology, product classification, mechanism components, and control systems. This standard incorporates new technical terms such as laser cutting and intelligent detection into the specification for the first time, reflecting the industry's development trend from mechanization to digitalization and intelligence.

Core Terminology Analysis

2.1 Basic Terminology

2.2 Product classification system

The standard divides computer-controlled embroidery machines into 6 major types:

1. Lockstitch machines(2.2.1.1): account for 75% of the market share, including cylinder-type, single-head desktop and other derivative models
2. Chain stitch machine(2.2.1.2): specially used for towel embroidery, the needle speed can reach 1200rpm
3. Super multi-head model(2.2.1.4): ≥80 head configuration, the vibration control problem needs to be solved

Key technical parameters

Implementation Suggestions

Manufacturing

1. Standardize product manuals according to standard terminology, such as distinguishing the servo/stepping type of embroidery frame drive mechanism(2.3.5)
2. The performance parameters defined in the standard should be used in the test report, such as embroidery range (2.1.39) = X stroke × Y stroke

Teaching and scientific research

1. Establish a standard terminology comparison table, such as:
"towel embroidery" should be unified as a subclass (2.1.8.1) under chain embroidery(2.1.8)
2. The experimental data annotation must include the standard clause number, such as the thread break detection method (2.1.18.2)