Yarn twisting device

A technology of yarn and braking device, which is applied in piecing device, spinning machine, loading/unloading, etc., can solve problems that cannot be eliminated, avoid downtime, improve yarn quality and winding positioning, and reduce trial and error The effect of times
CN1386689AInactive Publication Date: 2002-12-25OERLIKON TEXTILE GMBH & CO KG
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
OERLIKON TEXTILE GMBH & CO KG
Publication Date
2002-12-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

An elastic yarn knot-free yarn splicing device equipped with a prismatic splicing head (25), the splicing head has a splicing groove (26), and at least one compressed air injection hole (29) is provided in the groove. The splicing groove (26) receives the yarns to be spliced ​​with each other and enables airflow splicing of the fibers of the yarns. The splicing device (58) is respectively equipped with a clamping device (43; 44) and a yarn cutting device (41; 42). The splicing device (58) includes pretreatment nozzles (53; 54). In addition to the pretreatment of the yarn ends, the two nozzles are also used as an airflow holding device to fix the mutually spliced ​​yarn ends. According to the present invention, on the yarn path between the clamping device (43; 44) and the pre-treatment nozzle (53; 54), a braking device (49; 50) for airflow acting on the yarn is arranged, so that the yarn is sent to the pre-treatment The retraction distance of the nozzles (53;54) is shortened. By means of the yarn splicing device of the present invention, the number of ineffective yarn splices for splicing elastic yarns on a winder or a combined spinning / winding machine can be reduced.
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Description

technical field

[0001] The invention relates to a yarn splicing device according to the preamble of claim 1 with a prismatic splicing head for knot-free yarn joining. Background technique

[0002] Such a yarn splicing device is described, for example, in DE 40 05 752 A1 or in the patent DE 44 20979 A1 of the same type. In order to strive for the air-end yarn splicing device to be adapted to the growing field of filaments and yarns in order to produce knot-free yarn connections with high tensile strength and good appearance for various application conditions. Such yarn splicing should have as little difference as possible in tensile strength and appearance from the running filament or yarn. The air connection is realized in the splicing slot. The yarns to be spliced ​​are put into the splicing groove in the opposite direction and in a superimposed manner. The yarn end is subjected to appropriate airflow or airflow-mechanical pretreatment in the pretreatment nozzle, the so-...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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