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    • 6. 发明授权
    • Apparatus for spinning-in yarns in open-end rotor spinning units
    • 开放式转杯纺纱机中纺纱机的设备
    • US4369620A
    • 1983-01-25
    • US233398
    • 1981-02-11
    • Frantisek BurysekKarel MikuleckyJiri EliasStanislav EsnerStanislav SkodaJan Janousek
    • Frantisek BurysekKarel MikuleckyJiri EliasStanislav EsnerStanislav SkodaJan Janousek
    • D01H4/50D01H15/02
    • D01H4/50
    • The invention relates to an apparatus for the spinning-in of yarns in an open-end rotor spinning unit. The apparatus includes a spinning-in device for returning yarn end through a take-off duct into the spinning rotor, a severing device for shortening the yarn end to a predetermined length, and a withdrawing duct which communicates with the take-off duct and which is designed, on the one hand, for holding the yarn end by the action of a vacuum which, in the contact region of the two ducts, exceeds the working vacuum in the take-off duct, and, on the other hand, for withdrawing the severed yarn end. In accordance with an essential feature of the invention, at least one air nozzle opens into the withdrawing duct which during both spinning and spinning-in processes is connected to a subatmospheric pressure source, which nozzle is designed for introducing a fresh yarn end into the take-off duct by a controlled air outflow in a particular phase of the spinning-in process. The invention expediently utilizes the subatmospheric pressure air for both the spinning-in process and the withdrawal of impurities from the yarn in the take-off duct of the spinning rotor during the spinning process.
    • 本发明涉及一种用于在开放式转子纺纱单元中纺纱的装置。 该装置包括用于将纱线端部通过引出管道返回到纺丝转子中的纺纱装置,用于将纱线端部缩短到预定长度的切断装置和与取出管道连通的抽出管道, 一方面设计用于通过在两个导管的接触区域中超过起飞管中的工作真空度的真空的作用来保持纱线端,另一方面,为了抽出 切断纱线末端。 根据本发明的基本特征,至少一个空气喷嘴通向抽出管道,在两个纺纱和纺纱过程中,两个喷嘴连接到一个低于大气压的压力源,该喷嘴被设计用于将新鲜的纱线端部引入到卷取装置 在纺纱过程的特定阶段通过受控的空气流出。 本发明在纺丝过程中方便地利用低于大气压的空气进行纺丝过程和纺丝转子的送出管中的纱线中的杂质的抽出。