摘要:
Eine Fadenliefereinrichtung (14) zum Liefern von elastischen (weichen) Fäden (1) an eine Fadenverbrauchstelle mit zeitlich schwankendem Fadenbedarf weist eine Steuereinheit (18) auf, die den aktuellen Fadenbedarf ermittelt oder gemeldet bekommt. Entsprechend diesem Bedarf wird ein Fadenlieferrad (16) mit einer dem Fadenbedarf entsprechenden Drehzahl angetrieben. Der Faden (1) gelangt über eine Spanneinrichtung (15) zu dem Fadenlieferrad (16). Die Spanneinrichtung (15) ist so eingestellt, dass der Faden (1) definiert gedehnt wird. Dadurch wird eine feste Zuordnung von gewünschter Fadenliefermenge und Drehzahl des Fadenlieferrads (16) möglich.
摘要:
A base support (3) forms the base component for a modular thread-feed device (1). If required, additional modules can be attached to said base component, using corresponding coupling devices. The thread-feed device can thus be adapted to different applications and conditions.
摘要:
The invention relates to a yarn feed device in which one or more yarn detector levers (16) are provided which, while resting on the yarn, exert a force thereon that is small when the lever (16) is in a specified position, i.e. during proper yarn travel. If the lever pivots outward due to a slackening of the yarn tension or a tear in the yarn, the force with which the lever exerts onto the yarn increases. This is, for example, effected by a load-relieving device (31) which partially offsets the lever weight and exerts a compensation force which is dependent on the pivoting angle. The compensation force preferably decreases as the lever continues to pivot outward.
摘要:
The invention relates to a yarn feed device in which one or more yarn detector levers (16) are provided which, while resting on the yarn, exert a force thereon that is small when the lever (16) is in a specified position, i.e. during proper yarn travel. If the lever pivots outward due to a slackening of the yarn tension or a tear in the yarn, the force with which the lever exerts onto the yarn increases. This is, for example, effected by a load-relieving device (31) which partially offsets the lever weight and exerts a compensation force which is dependent on the pivoting angle. The compensation force preferably decreases as the lever continues to pivot outward.
摘要:
The inventive bearing system consists of a bearing seat (21), a roller bearing (18), and a squeezing element (26). The squeezing element lies flatly on the outer ring of the roller bearing and only in areas on corresponding areas of the bearing seat. The areas are preferably linear or strip-shaped and are oriented in an essentially axial manner. This facilitates the insertion and removal of the roller bearing (18) into or out of the bearing seat (21) and prevents the outer ring of the bearing from being rotated along, also in the case of bearing seats that are provided with relatively generous tolerances.
摘要:
The inventive thread-supplying device (1) has a plastic, preferably two-shell housing (3). A fixing device (4) is provided for connecting the housing to a holder on the machine side. Said fixing device also consists of plastic. The fixing device (4) is reinforced by means of appropriate forming and does not require any intermediate metal layers. The two halves of the housing each support a bearing for a continuous shaft, which supports a thread-supplying drum at one end and a drive device, e.g. a pulley(14, 15), at the other end. Fixing means are used to keep the two housing parts together in the correct position. The housing (3) is easy to open for maintenance.
摘要:
A yarn lifting element (28), which is provided on a positive thread regulating wheel, comprises straight yarn-bearing surfaces (34,35) whose position cannot be displaced by the yarn (2), enabling the yarn to slip in relation to the thread feeding wheel (17) when required. Said additional measure enables the positive thread regulating wheel to be used in areas which were previously excluded on account of the required synchronicity between the feeding of the thread and the consumption of the thread.
摘要:
A base support (3) forms the base component for a modular thread-feed device (1). If required, additional modules can be attached to said base component, using corresponding coupling devices. The thread-feed device can thus be adapted to different applications and conditions.
摘要:
The proposed thread feed device (1) is intended for elastic yarn (threads) on knitting machines in which the thread consumption fluctuates markedly with time and reaches high levels for certain periods. The device takes the form of a thread regulating wheel. The thread feed device (1) has a thread wheel (11) around which the thread to be delivered (2) is wound several times and which feeds the thread (2) into a thread store (19) situated between the knitting machine and the thread wheel (11). The thread store takes the form of a substantially straight section of the thread path. To monitor the thread tension, a tension sensor (22) is provided; its measurement path is vanishingly small compared to the length of thread to be stored in the thread store (19). The measurement path is defined by a mobile element (25) of the sensor device (22) and is aligned at right angles to the path of the thread. The connection of a low-inertia drive device (9) to a thread store (19) which exploits the characteristic elasticity of the thread and a regulator (24) which monitors the thread tension with the aid of a sensor device (22) permits the use of the thread feed device (1) for feeding elastic yarn and to keep the thread tension more or less constant even where the thread take-up fluctuates markedly with time. Since the thread (2) in the thread store (19) is not deflected and, in particular, is not subjected to a significant friction, and since the thread (2) reaches the thread wheel (11) without the aid of an intermediate thread brake, short returns of thread (2) can be caught by short reverse turns of the thread wheel (11).
摘要:
The inventive bearing system consists of a bearing seat (21), a roller bearing (18), and a squeezing element (26). The squeezing element lies flatly on the outer ring of the roller bearing and only in areas on corresponding areas of the bearing seat. The areas are preferably linear or strip-shaped and are oriented in an essentially axial manner. This facilitates the insertion and removal of the roller bearing (18) into or out of the bearing seat (21) and prevents the outer ring of the bearing from being rotated along, also in the case of bearing seats that are provided with relatively generous tolerances.