摘要:
An arrangement for handling a paper, cardboard, tissue or other fibrous-material web in a machine for producing and/or finishing the same, includes an endlessly circulating belt of high flexural rigidity which wraps around a rotatably mounted control roller with an angle of wrap, wherein at least one end of the control roller is displaceably mounted along an adjusting zone for setting the belt tension. The arrangement of the present invention provides an improved running of the belt and the lateral stress of the belt is minimized by the angle of wrap lying between 90° and 180° and the adjusting direction of the control roller lying approximately perpendicular to the bisector of the angle of wrap.
摘要:
A drafting arrangement for a spinning machine, comprising at least one pair of feed rollers, one pair of central rollers and a pair of withdrawal rollers, wherein the lower rollers of the drafting arrangement are configured as roller segments, which are rotated by single-motor drives, and the upper rollers are mounted in a pendulum carrier. The lower roller drive (14) at least of the pair of central rollers (21) is arranged together with its lower roller (21A) in a bearing device (15) in such a way that, after opening of the pendulum carrier (17) receiving the associated upper roller (21B), the lower roller (21A) and its drive (14) can easily be removed from the bearing device (15) in the direction of the pendulum carrier (17).
摘要:
The aim of the invention is to produce an effect yarn on an open-end rotor spinning machine, formed from an alternating line-up of yarn sections and effects consisting of pre-determined thickenings. To this end, an effect is produced where the yarn is joined by means of a piercing end, in the piercing region of the yarn located downstream of the piercing end, following a break in the thread. The invention enables the quality of the yarn produced in this way to be improved such that unwanted deviations from the pre-determined repeat of pattern of the effect yarn, caused by piercing regions, are eliminated.
摘要:
The yarn cleaner (5) is designed for cleaning out defects from an effect yarn (1), which is formed from an alternating stringing together of webs and of effects comprised of given thickenings. The yarn cleaner has a measuring head (6) in which at least one yarn parameter is measured, whereby cleaning limits are determined for the yarn parameter, and the presence of a defect in the yarn is signaled when these limits are surpassed. The measured values of the yarn parameter are compared with the cleaning limits and intolerable defects are cut out from the yarn. The cleaning limits are each dependent on whether the values are measured in the web or in the effect. The yarn cleaner (5) is suited for keeping the desired diameter quality of effect yarn on winding and spinning winding machines.
摘要:
A drafting arrangement for a spinning machine, comprising at least one pair of feed rollers, one pair of central rollers and a pair of withdrawal rollers, wherein the lower rollers of the drafting arrangement are configured as roller segments, which are rotated by single-motor drives, and the upper rollers are mounted in a pendulum carrier. The lower roller drive (14) at least of the pair of central rollers (21) is arranged together with its lower roller (21A) in a bearing device (15) in such a way that, after opening of the pendulum carrier (17) receiving the associated upper roller (21B), the lower roller (21A) and its drive (14) can easily be removed from the bearing device (15) in the direction of the pendulum carrier (17).
摘要:
The present invention is a machine for manufacturing a fibrous web from a fibrous suspension, with a sheet forming area that exhibits at least one suction box, which includes a main box with at least one suction box cover that is formed from at least two drainage elements that run laterally to the machine's running direction, border a suction slit, and each has one main body and at least one ceramic. The present invention is identified by the fact that at least one drainage element and/or one format slide exhibit at least one removable edge piece in which is integrated at least one temperature sensor in order to measure the temperature in the ceramic and/or the temperature at an adhesive point between the ceramic and the associated main body and/or the temperature in the main body. The present invention is furthermore a process and a system for monitoring a drainage element.
摘要:
This invention relates to an arrangement for sealing off a fluid-filled, stationary pressurized compartment from an endlessly circulating, impermeable belt of a machine for producing and/or refining a paper, paperboard, tissue or other fibrous web with the help of at least one seal of the pressurized compartment, whose contact pressure toward the belt is variable, wherein the belt is pressed by the pressurized compartment against a co-driven support element and the fibrous web runs alone or jointly with one or more function belts between the belt and the support element. The sealing is improved in this case, while producing as little leakage and wear as possible, in that the contact pressure of the seal is controlled as a factor of the drive power and/or the drive torque channeled into the belt and/or as a factor of the leakage of fluid through the gap between the seal and the belt and/or as a factor of the pressure of the fluid in the pressurized compartment.
摘要:
A method which improves the correspondence between the produced fancy yarn and the predetermined configuration of said fancy yarn. The fancy yarn is guided through a sensor device in a spinning device after it is formed and the diameter of the fancy yarn is continuously measured by the sensor device. The fancy configuration of the produced yarn is determined on the basis of the measured values of the diameter and is compared with the predetermined fancy configuration. The comparison is carried out until sufficient correspondence between the predetermined fancy configuration and the fancy configuration of the optimized, produced yarn is achieved.
摘要:
A yarn cleaner for cleaning defects from a yarn, by means of a head for measuring at least one yarn parameter for comparison against cleaning limits determined for the yarn parameter. If the cleaning limits are exceeded, a defect in the yarn is indicated whereby intolerable defects may be cut out from the yarn. The yarn cleaner is set up for cleaning an effect yarn, also called a novelty or fancy yarn, formed from an alternating thinner webs and thickened effects in the yarn. At least one value of the yarn parameter is predetermined for webs and for effects and the cleaning limits of the yarn cleaner are adjusted such that they lie outside the predetermined value of the web parameter and outside the predetermined value of the effect parameter.
摘要:
The invention relates to a device and a method for producing and/or transforming a web of fibrous material, in particular a paper or cardboard web. Said device includes a heatable and rotatable cylinder, in particular a drying cylinder of a drying section, and a cylinder sleeve which can be impinged from the inside by a heating fluid. In order to improve the heating power below the external surface of the cylinder sleeve, at least one channel is provided in order to guide the heating fluid.