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FZ/T 93048 Needles for needle loom is to be published in several parts, and the following parts are planned to be published currently:
——Part 1: Felting needles;
——Part 2: Fork needles;
——Part 3: Conical felting needle;
…
This is Part 2 of FZ/T 93048.
This part was developed in accordance with the rules given in GB/T 1.1-2009.
This part was proposed by the China National Textile and Apparel Council.
This part is under the jurisdiction of the Subcommittee on Nonwoven Machinery of the National Technical Committee on Textile Machinery and Accessory of Standardization Administration of Chin (SAC/TC 215/SC 3).
Needles for needle loom — Part 2: Fork needles
1 Scope
This part of FZ/T 93048 specifies the terms and definitions, classification and basic structure, dimensions and characteristics, and marking of fork needles.
This part is applicable to fork needles for needle loom used for napping or patterning of nonwovens, knitting and woven fabrics (hereinafter referred to as "the fork needles").
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendment) applies.
FZ/T 93048.1-2020 Needles for needle loom — Part 1: Felting needles
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
fork needles
device on the needle loom, which is used for napping or patterning of nonwovens, knitting and woven fabrics by its forks
3.2
fork width
width of the fork inner side of the fork needles, see Figure 1
3.3
fork depth
depth of the fork inner side of the fork needles, see Figure 1
4 Classification and basic structure
4.1 Classification
The fork needles are divided into two types by the fork dimensions:
——Common type, whose fork width is ≥ 0.1 mm, with code of "1";
——Narrow-necked type, whose fork width is < 0.1 mm, with code of "9".
4.2 Basic structure
The basic structure of the fork needle is shown in Figure 1.
Dimension:
L1——nominal length d——diameter of working part;
L2——length of working part; d0——diameter of shank;
w——fork width; d1——diameter of shank in the first middle part;
h——fork depth; d2——diameter of shank in the second middle part.
Keys:
1——Fork;
2——Working part;
3——The second middle part;
4——The first middle part;
5——Shank;
6——Crank.
Figure 1 Basic structure of fork needle
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and basic structure
5 Dimensions and characteristics
6 Marking
