摘要:
A device for the control of a flat-bed knitting machine for the positional determination at lift reversal of the carriage assembly driven by a reversible motor has a phase-shifted pulse generator device on the carriage assembly which can be moved back and forth and a stationary pulse generator board device in the area of the needle bed arrangement. With such a device a reproducible lift reversal can be performed in the area of the ends of the needle bed as well as at any desired location along the needle bed arrangement, the pulse generator board device has a pulse generator board extending along a needle bed of the needle bed arrangement. During lift reversal the pulse sequences of a pulse generator associated with the pulse generator board are detected in a calculator unit and compared with the pulses associated with the locations for the beginning or alternatively, the end of the lift reversal which have been preset by a program, and the calculator unit performs a speed change during the detection of the lift reversal pulses in dependence an overrun set by the program and the present working speed.
摘要:
A device for the control of a flat-bed knitting machine for needle selection and/or the determination of the position of the carriages on the needle beds is provided with a pulse generator device having magnetically controllable resistors in the form of double differential magnetoresistors and being fixed on a first machine element, and with a magnetically conductive pulse generator board device being fixed on a second machine element. The two machine elements are movable in relation to each other and the magnetoresistors generate separate and phase-shifted in respect to each other pulse sequences during the relative movement to the pulse generator board device. So that in a device a control, especially of the needle selection, can take place at considerably higher speed a determination of direction, and if needed, an adjustment to the speed of the carriage being possible at the same time, it has been provided that the pulse generator board device has a first pulse generator board arranged along a needle bed, the tooth/grove gauge of which is finer that the finest needle gauge in the needle bed, that a pulse generator, fixed on the carriage, is associated with the first pulse generator board, the magnetoresistors of which are distant by approximately .lambda..sub.1 /4 (.lambda..sub.1 being the size of the impulse period), and that at predetermined intervals several successive first rectangular control pulses (I-VIII) are derived from the first pulse sequences phase-shifted by .lambda..sub.1 /4 (A.sub.FP, B.sub.FP) by detecting the crossover and comparing the normalized pulse sequences.
摘要:
A device for the determination of the position of leading or trailing draw-down elements which can be shifted to operated in opposite directions in flat-bed knitting machines has a single step motor for shifting the draw-down elements, a position sensor and a switching element movable in relation to each other and cooperating with each other, the switching element indicating a basic position of the two draw-down elements. So that in such a device besides the basis position of the two draw-down elements the shifted position, i.e. which of the two draw-down elements is in the draw-down position, can be machine-internally determined, a second switching element is provided, which is operationally connected with the position sensor, the second switching element and the position sensor being movable in relation to each other and the second switching element being synchronously movable with the first switching element. Furthermore, the second switching element is associated with one of the two draw-down elements for the determination of the switched position of the two draw-down elements.
摘要:
A device for the selectively controllable mutual displacement of yarn guides of flat-bed knitting machines has a plurality of electromagnets fixed against motion on a carriage unit, to each one of which a mutual displacement device is controllably assigned, the mutual displacement finger of which can be brought into and out of contact with at least one associated yarn guide box of a yarn guide, movable parallel to a needle bed unit along yarn guide rails. In order to make the transfer of motion from the electromagnet to the mutual displacement finger more rapid and independent of the direction of motion of the carriage unit in such a device for the selectively controllable mutual displacement of yarn guides of flat-bed knitting machines, it has been provided that the electromagnet be surrounded by a frame element, from the center of one end of which the mutual displacement finger protrudes in the direction of movement and the other end of which can be acted upon by an armature rod of the associated electromagnet, and that the frame element is supported in a longitudinally movable manner on its two side legs.
摘要:
A cam carriage for flat-bed knitting machines has at least one leading and trailing draw-down element, having a drive top plate and a bottom plate with a draw-down track located at opposite sides of a cam plate in which a draw-down element is placed movably between an alignment position and several casting-off positions in a guide slot, and the driven top plate is rigidly connected with a drive element at least in the direction of the draw-down position. In such a cam carriage for flat-bed knitting machines, the draw-down elements of which provide a very high draw-down force on the one hand, and, on the other, react with sufficient resilience during the movement in the direction of the draw-down position, it has been provided that the top plate and the bottom plate, of the draw-down element are movable in relation to each other and are biased to take up a basic position such that a relative movement of the top and bottom plates can only be performed during a shifting movement of the top plate in the direction of one of the draw-down positions.
摘要:
A control magnet assembly (10) for a pattern apparatus in knitting machines, for electrically controlled needle selection, has selection magnets (29, 30), which are provided with permanent magnetic retaining pole zones and with control pole zones with which control coils (42, 43; 52, 53) that are triggerable in accordance with the pattern are associated, and against which armature elements (26) operatively connected with the needles (18) can be brought. In a control magnet assembly (10) of this kind, optimal magnetic conditions in the control pole zone are to be provided such that a uniform and reliable throwing off of the appropriate armature elements (26) is always attained. To this end, a measuring head (15, 25) is provided for detecting the magnitude of the magnetic field in the control pole zone, and a circuit layout is provided between the measuring head (15, 25) and the control coil (42, 43, 52, 53).
摘要:
In a flat knitting machine equipped with a manually movable handlebar (11) which is oriented parallel to a needle bed, the eccentrically mounted handlebar (11) is connected to a pivoting lever (15) which is the carrier of an armature (19) for a stationarily arranged electromagnet which can be excited via a control device and which, in the excited state, keeps the handlebar in an end position. The arrangement is such that, when the handlebar (11) is struck from above, the magnetic coupling can be released and it is also thereby possible to switch off the machine drive by hand in the quickest way possible.
摘要:
In an adjusting device for opposite adjustment of drawing off cam parts of a cam system of a flat knitting machine carriage, with a common stepper motor moving with the machine carriage and providing a rotary movement which is converted into a longitudinal movement of a carriage running direction and transferred to cam parts to be adjusted, with at least one control curve transferring the rotary movement of the stepper motor the cam parts to be adjusted, and with two first control sliders adjustable in the carriage running direction and provided with a toothed strip, a driven pinion of the stepper motor acts simultaneously and oppositely directly on the first control sliders, and at least two second control are each connected with a cam part to be adjusted, with which the first control sliders are drivingly coupled through the control curve in a drawing manner.
摘要:
In a two-bed flat knitting machine separate sinker control devices are provided for controlling sinkers arranged between needles and have a device body laterally releasably mountable on a machine carriage. They extend only over an operating region of a cam system and their control parts are formed so that they are displaced during a carriage stroke return automatically to an operative position or a rest position.
摘要:
In a knitting take-off device provided with gripping elements (14) movable through the comb gap of a flat bed knitting machine, the plane of the gripping elements (14) is directed perpendicular to the hooking planes of the knitting needles (13) mounted in the needle beds. As a result, the dimensions of the gripping elements are no longer limited by the width of the comb gap, and the gripping elements (14) can be coupled to additional elements, such as a cover stop rod (16). By means of the cover stop rod (16), the opening (14.2) of the gripping element (14) can be closed and a thread take-up space (20), closable by the head (14.1) of the gripping element (14), can be formed.