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    • 2. 发明公开
    • METHOD OF CONTROLLING A COMPENSATOR OF THE DIFFERENCE BETWEEN THE DRAWING-OFF AND WINDING SPEEDS OF YARN WHEN WINDING YARN ON A BOBBIN AT A WORKSTATION OF A SPINNING MACHINE AND A DEVICE FOR PERFORMING THE METHOD
    • EP3498642A1
    • 2019-06-19
    • EP18211229.2
    • 2018-12-10
    • MASCHINENFABRIK RIETER AG
    • Pilar, EvzenKubes, Miroslav
    • B65H59/00B65H51/20D01H13/10D01H4/48
    • The invention relates to a method for controlling a compensator of the difference between the drawing-off and winding speeds of yarn (1) when winding yarn on a bobbin (6) at a workstation of a spinning machine, in which the position of a compensating arm (4) of the compensator is controlled at different stages of operation at a workstation, as well as during service operations at the workstation in connection with filling with yarn (1) and emptying an intermediate vacuum storage device (3) of yarn (1) at the workstation. Before the emptying of the intermediate vacuum storage device (3) of yarn (1), the compensating arm (4) of the compensator is deflected across the yarn (1) path and across its working range (α) into its out-of-the-working-range position (B), whereby the yarn (1) is captured by the arm (4) and is also deflected to its out-of-the-working-range position (B), thus forming non-working reserve of yarn, and the arm (4), after being deflected to its out-of-the-working-range position (B), is held in this position by the retaining force (F), whereupon the intermediate vacuum storage device (3) of yarn (1) is emptied, as a result of which the yarn (1) acts by exerting tensile force on the arm (4) of the compensator and overcomes the retaining force (F) holding the arm (4) in the out-of-the-working-range position (B), by which means, as a result of the action of the yarn (1), the arm (4) returns to its operating range (α) and resumes its operation
      The invention also relates to a device for the compensation of a yarn (1) loop when winding yarn (1) on a cross-wound bobbin (6) on a spinning machine at a constant speed of the produced yarn (1), which comprises a movable arm (4) of a compensator, the path of the arm (4) intersecting the yarn (1) path between a draw-off mechanism (2) of yarn (1) and a winding device of yarn (1) on a bobbin (6). The compensating arm (4) of the compensator is controllably displaceable between the fully deflected first position (D), a position within its working range (α) and the out-of-the-working-range position (B) behind its working range (α), whereby in this out-of-the-working-range position (B) to the compensating arm (4) is assigned a source of retaining force (F).
    • 5. 发明公开
    • SPINNING UNIT AND SPINNING MACHINE
    • 纺纱机和纺纱机
    • EP3321399A1
    • 2018-05-16
    • EP17198583.1
    • 2017-10-26
    • Murata Machinery, Ltd.
    • Okazaki, Yohei
    • D01H1/16D01H13/10
    • D01H1/16D01H13/10
    • A spinning unit (2) includes a draft device (6) and a pneumatic spinning device (7) adapted to supply a yarn (Y), a yarn accumulating roller (54) adapted to accumulate the supplied yarn (Y), and a front cover (60) arranged on a front side than the yarn accumulating roller (54) and formed with an opening (61) for exposing the yarn accumulating roller (54) to the front side. The front cover (60) includes a main body part (62), and a first edge member (63) and a second edge member (64) that form an edge of the opening (61). The first edge member (63) and the second edge member (64) have hardness higher than hardness of the main body part, a fusion point higher than a fusion point of the main body part, and a surface roughness smaller than a surface roughness of the main body part.
    • 纺纱单元(2)具备牵伸装置(6)和适合于供给纱线(Y)的气流纺纱装置(7),储存供给的纱线(Y)的纱线存积辊(54) 配置在纱线存积辊54的前方且形成有使纱线存放辊54向前方露出的开口61的罩60。 前盖(60)包括主体部分(62)以及形成开口(61)的边缘的第一边缘部件(63)和第二边缘部件(64)。 第一边缘构件(63)和第二边缘构件(64)具有比主体部分的硬度更高的硬度,熔点高于主体部分的熔点,表面粗糙度小于表面粗糙度 主体部分。
    • 6. 发明公开
    • SPINNING MACHINE
    • 纺纱机
    • EP3269851A1
    • 2018-01-17
    • EP17184907.8
    • 2016-09-29
    • Murata Machinery, Ltd.
    • Sawada, HarutoshiAkimoto, Masahiro
    • D01H13/10D01H13/16D01H13/20
    • D01H13/10D01H13/16D01H13/20
    • The invention relates to a spinning machine (1) comprising: a core yarn supply device (7) that includes a supporting unit (50) configured to support a core yarn package with core yarn (C) wound thereon and a tension adding unit (71) configured to add tension to the core yarn (C) unwound from the core yarn package; a winding device (13) configured to wind yarn (4) formed from a fiber bundle including the core yarn (C);a tension detecting unit (10) configured to detect tension of the yarn (4) in an upstream side from the winding device (13) in a direction in which the yarn (4) travels; and a control unit (15) configured to control the tension adding unit (71) based on a result of detection by the tension detecting unit (10) such that the yarn (4) is wound onto the winding device (13) with adjustment of tension added to the core yarn (C) in the core yarn supply device (7).
    • 本发明涉及一种纺纱机(1),该纺纱机(1)具备:芯纱供给装置(7),该芯纱供给装置(7)具有支承单元(50),该支承单元(50)支承卷绕有芯纱(C)的芯纱卷装和张力赋予单元 ),其构造成对从芯纱卷装展开的芯纱(C)施加张力; 卷绕装置(13),其卷绕由包含所述芯纱(C)的纤维束形成的纱线(4);张力检测部(10),其检测所述纱线(4)在所述卷绕部 装置(13)在纱线(4)行进的方向上移动; 以及控制单元(15),其被构造为基于张力检测单元(10)的检测结果来控制张力添加单元(71),使得纱线(4)被卷绕到卷绕装置(13)上,同时调节 对芯纱供给装置(7)中的芯纱(C)施加张力。
    • 9. 发明公开
    • YARN WINDING DEVICE
    • GARNWICKLUNGSVORRICHTUNG
    • EP2962973A1
    • 2016-01-06
    • EP15169247.2
    • 2015-05-26
    • Murata Machinery, Ltd.
    • Miura, TakahiroMurakami, TakeshiKumazawa, Tsuyoshi
    • B65H51/22B65H59/38D01H13/10
    • B65H51/22B65H59/384B65H2701/31D01H13/104
    • A yarn winding device includes a yarn storage roller (51), a tension measuring device, a yarn hooking arm (53), an arm driving section (55), and a control section (60). The yarn storage roller (51) stores a yarn on a surface by being rotatably driven by a roller driving section (52). The tension measuring device measures tension of the yarn pulled out from the yarn storage roller (51). The yarn hooking arm (53) is arranged downstream in a yarn travelling direction of the yarn storage roller (51), and makes contact with the yarn to apply tension to the yarn. The arm driving section (55) rotatably drives the yarn hooking arm (53). The control section (60) feedback controls the arm driving section (55) based on a measurement result of the tension measuring device to adjust an amount of tension applied by the yarn hooking arm (53).
    • 纱线卷绕装置包括纱线存放辊(51),张力测量装置,喂纱臂(53),臂驱动部(55)和控制部(60)。 纱线存放辊(51)通过由滚筒驱动部(52)旋转驱动而将纱线存储在表面上。 张力测量装置测量从纱线存放辊(51)拉出的纱线的张力。 纱线钩臂(53)布置在纱线存放辊(51)的纱线行进方向的下游,与纱线接触以向纱线施加张力。 臂驱动部55可旋转地驱动该钩挂臂53。 控制部(60)的反馈基于张力测量装置的测量结果来控制臂驱动部(55),以调节由该挂钩臂(53)施加的张力的量。