Novel latch needle of weft knitting machine
By designing the new weft knitting machine tongue needle, the movement range and structure of the needle tongue are optimized, the suitability of yarns of different thicknesses is solved, and the strength of the needle hook and the efficiency of the loom are improved.
Patent Information
- Application Number
- CN202422191567.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-07
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-07
AI Technical Summary
The existing weft knitting tongues are poor in applicability to yarns of different thicknesses, which can easily lead to yarn falling off, needle breakage and frequent replacement, affecting production efficiency.
A new type of weft knitting tongue needle is designed. The movable range of the needle tongue is greater than or equal to 130° or less than or equal to 150°. A trumpet-shaped through hole is provided on the needle rod. The needle tongue and the hook head cooperate to form a sunflower-like groove. The acute angle and angle enhance the strength of the needle hook, which is suitable for a variety of thick and thin yarns.
It improves the overall strength of the needle hook, reduces the needle tongue falling off, and ensures the working efficiency of the loom and the service life of the tongue needle.
Smart Images
Figure CN223061189U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of textile machinery, and specifically relates to a new type of latch needle for a weft knitting machine. Background Art
[0002] A knitting needle is a main moving part on a knitting machine, which is made of steel wire or steel strip through mechanical processing. It is used to knit yarns into loops and connect the loops into a knitted fabric. The structure and shape of the knitting needle affect the knitting loop formation process, the productivity of the knitting machine and the quality of the product, and are an important basis for the design of the knitting machine. Commonly used knitting needles include a needle head, a needle bar and a needle tail connected in sequence, and the needle head is composed of a needle hook and a latch.
[0003] With the development of the textile industry and the complexity of patterns in textiles, higher requirements are placed on the needle hook. Most of the existing technical needle hooks have poor versatility for yarns of different thicknesses. For thick yarns, problems such as the latch needle being unable to hold the yarn, yarn breakage, needle breakage, and the latch being prone to falling off often occur, and needles need to be frequently replaced, seriously affecting production efficiency. Summary of the Utility Model
[0004] The utility model aims to overcome the deficiencies in the prior art and provides a new type of latch needle for a weft knitting machine.
[0005] The present application provides the following technical solutions:
[0006] A new type of latch needle for a weft knitting machine, which includes a needle bar, and a hook head extends from one end of the needle bar. It is characterized in that: a latch is hinged on the needle bar on one side of the hook head, a tongue groove corresponding to the end of the hook head is provided at one end of the latch, and the movable range of the latch is greater than or equal to 130° and less than or equal to 150°.
[0007] On the basis of the above technical solutions, the following further technical solutions may be available:
[0008] A trumpet-shaped through hole is provided on the needle bar, and the hinge point of the latch is located in the trumpet-shaped through hole.
[0009] The latch includes a tongue bar, a rotating shaft hinged to the needle bar is penetrated through the lower end of the tongue bar, a tongue head with a width greater than that of the tongue bar extends from the upper end of the tongue bar, and the tongue groove is located on the bottom surface of the tongue head, and its outer shape is like a sunflower seed, and its pointed end points to the direction of the tongue bar.
[0010] One end of the tongue groove extends a certain distance beyond the hook head, so that an acute angle is formed between the two.
[0011] Advantages of the Utility Model
[0012] The utility model has a simple structure, is convenient to use, and the overall strength of the needle hook is high. Due to the existence of the acute angle, this design is applicable to various yarns with different thicknesses. The needle tongue is not easy to fall off, and there is no need to frequently change the needle, effectively ensuring the working efficiency of the loom and the service life of the latch needle. Description of the Drawings
[0013] Figure 1 is a schematic structural diagram of the utility model;
[0014] Figure 2 is a schematic structural diagram of the needle tongue;
[0015] Figure 3 is a schematic diagram of the overall structure when the needle tongue is separated from the hook head. Detailed Implementation Manner
[0016] As Figures 1-3 shown, a new type of latch needle for a weft knitting machine includes a needle bar 1, and a hook head 2 extends from one end of the needle bar 1. A trumpet-shaped through hole 1a is provided on the needle bar 1 on one side of the hook head 2, and a needle tongue 3 is hinged in the trumpet-shaped through hole 1a. The needle tongue 3 includes a tongue bar 3b, and a tongue head portion 3c with a width greater than that of the tongue bar 3b extends from the upper end of the tongue bar 3b. A tongue groove 3a corresponding to and cooperating with the end of the hook head 2 is provided on the bottom surface of the tongue head portion 3c. The outer shape of the tongue groove 3a is like a sunflower seed, its relatively pointed end points in the direction of the tongue bar 3b, and an opening 3d is left on the groove wall of its larger end.
[0017] The lower end of the tongue bar 3b is inserted from the larger opening end of the through hole 1a and then forms a hinge with the hole wall of the through hole 1a through a rotating shaft 3d. The movable range of the tongue bar 3a of the needle tongue 3 is 135°.
[0018] The outer shape of the tongue groove 3a is like a sunflower seed, and its relatively pointed end points in the direction of the tongue bar 3b. One end of the tongue groove 3a extends a certain distance from the bending portion of the hook head 2, so that an acute angle 4 is formed between the two.
Claims
1. A new weft knitting machine latch needle, which comprises a needle bar (1), and a hook head (2) extends from one end of the needle bar (1), and is characterized in that: The latch tongue (3) is articulated on the needle bar (1) on one side of the hook head (2). A tongue groove (3a) corresponding to and cooperating with the end of the hook head (2) is provided at one end of the latch tongue (3). The movable range of the latch tongue (3) is greater than or equal to 130° and less than or equal to 150°.
2. The novel latch needle described in claim 1 is characterized in that: A trumpet-shaped through hole (1a) is provided on the needle bar (1), and the articulation point of the latch tongue (3) is located within the trumpet-shaped through hole (1a).
3. A novel latch needle for weft knitting machines according to claim 1, characterized in that: The latch tongue (3) includes a tongue rod (3b). A rotating shaft (3d) articulated with the needle bar (1) is penetrated through the lower end of the tongue rod (3b). A tongue head (3c) with a width greater than that of the tongue rod (3b) extends from the upper end of the tongue rod (3b). The tongue groove (3a) is located on the bottom surface of the tongue head (3c), and its outer shape is like a sunflower seed, and its relatively pointed end points in the direction of the tongue rod (3b).
4. A novel latch needle for a weft knitting machine according to claim 1, characterized in that: One end of the tongue groove (3a) extends a certain distance out of the hook head (2), so that an acute angle is formed between the two.