摘要:
A circular knitting machine for manufacturing open-work knitted fabric comprises: a crown (4) arranged around a needle-holding cylinder (2) and having a plurality of radial grooves (5) and a guiding ring (38) operatively associated to the crown (4). Each of a plurality of knockover sinkers (7) is housed in one of the radial grooves (5), is radially movable in the respective radial groove (5) and has a pin (29) configured for cooperating with the needles (3). At least one shaped sinker (8, 9) is placed beside each of the knockover sinkers (7) and is movable with respect to the respective knockover sinker (7). The shaped sinker (8, 9) has a protrusion (16) offset laterally with respect to the respective knockover sinker (7) and configured for elongating an interstitch, arranging it on an adjacent needle (3) and forming an open work. A selector (11) is operatively coupled with the shaped sinker (8, 9) and is oscillating in a radial plane between a rest position and an operating position, wherein in the operating position the selector (11) acts indirectly upon the shaped sinker (8, 9) so as to deviate the trajectory of the shaped sinker (8, 9). A selecting actuator (24) faces laterally the crown (4) and can be engaged upon command with the selectors (11) for causing the selectors (11) to switch from the rest position to the operating position.
摘要:
Dispositivo para la selección de agujas en máquinas circulares de género de punto. El dispositivo dispone de tres sistemas polares básicos, a saber, un sistema de retención magnético de preparación, un sistema electromagnético para efectuar la selección y un sistema de retención para la selección mecánica, basándose la selección en la oposición de fuerzas que se produce entre la fuerza de atracción magnética de los tres sistemas polares sobre una cara del jack y un muelle asociado a éste.
摘要:
The present invention provides a method for rapidly switching selector feet (52) between activate and deactivate selection positions by friction coupling them to vibratory piezoelectric motors (58) and a fast selector (50) for a knitting machine comprising selector feet friction coupled to piezoelectric motors.
摘要:
In a textile machine, in particular in a knitting machine, with controllable working elements (3) and an arrangement for selecting the working elements, the working elements (3) are held in their initial position by a holding magnet (8) and are selectively released from their initial position by an electromagnetic control system (12, 13). In order to obtain a textile machine with a simple design, capable of being driven at high working speeds but in a reliable and safe manner, at least one holding magnet (8) is rigidly fixed to the part of the textile machine that carries the working elements (3). A direct contact between the working elements (3) and the moving control system (12 or 13) is thus avoided, so that a contactless selection of the working elements (3) is made possible.
摘要:
In a knitting machine with an electric needle selection system having a holder, a selector and an adjusting device for selection elements, the adjusting device has an adjusting magnet (41) arranged in such a way in relation to the selected knitting elements (5) that a shearing force is brought to bear on the corresponding knitting elements (5). An electric needle selection system is thus obtained that allows selection to be carried out in a reliable way even at high switching frequencies but that is nevertheless of simple design.
摘要:
A drive chain for stitch formation members of a circular knitting machine comprises an element (6) coupled or to be coupled with a stitch formation member, and an oscillating lever (7) connected to said element (6) on a junction area. The oscillating lever (7) is configured for interacting with selecting devices (23) so as to oscillate with respect to said element (6). Said element (6) comprises a first portion (9) carrying a first butt (18) and a second portion (10) configured for slidingly coupling with a bottom of a respective groove (5). Along a main direction of development of the drive chain (3), the junction area is placed between the stitch formation member and the first butt (18).
摘要:
The invention relates to a Jack selector unit (100) for textile knitting machines, comprising a plurality of selector tips (20), each oscillating around an oscillation pin (22) between two extreme positions in relation to a central, neutral position, and a plurality of piezoelectric laminae (30) each of which operatively connected to a respective selector tip (20), and electrically operable to cause the oscillation of said tip (20). The fixed end (32) of each piezoelectric lamina ends with a shank appendage (34). The shanks (34) of the plurality of laminae (30) are interposed between two clamps (40,41) at least one (41) of which is movable with respect to another (40) like a clamp between an open release position, to allow the centring of the selector tips (20) in the neutral position, and a clamped position of the shanks (34) during normal use of the unit (100).
摘要:
Es wird ein Biegewandlerelement (1, 40) mit einem Schutzgehäuse (3) und mit einem darin angeordneten Biegewandler (4) angegeben, welcher einen flachen Tragkörper (6) und eine darauf auf mindestens einer Seite aufgebrachte piezoelektrisch aktive Beschichtung (7) umfasst, wobei der Biegewandler (4) im Wesentlichen von dem Schutzgehäuse (3) umschlossen und mit seinem Festende (9) unmittelbar im Schutzgehäuse (3) befestigt ist. Weiter wird ein Biegewandlermodul (28) mit einer Mehrzahl derartiger Biegewandlereiemente (1, 40) angegeben. Durch die Fixierung eines Biegewandlers (4) innerhalb eines Schutzgehäuses (3) wird eine leicht montierbare Einheit geschaffen, wobei die Beschädigungsquote bei einer Montage oder einem Transport infolge mechanischer Zerstörung der piezoelektrischen Beschichtung (7) gegenüber Ausführungen des Standes der Technik deutlich herabgesetzt ist.
摘要:
A magnetic actuator, particularly for selection devices in hosiery knitting machines or the like, comprising a main magnet (2), which has at least two poles (4, 5, 6, 7) arranged side by side and separated by a discontinuity (8, 9), and a selection electromagnet (3a, 3b), which is provided with at least one pole (11 a, 11 b, 12b) arranged in alignment with the discontinuity (8, 9) and spaced laterally with respect to it. The selection electromagnet (3a, 3b) can be actuated to generate or eliminate or reduce a magnetic attraction force at the pole (11a, l 1 b, 12b) of the selection electromagnet (3a, 3b).
摘要:
A needle selector for a knitting machine, comprising a finger operation unit, a power supply means for supplying power to the finger operation unit and a supply terminal for supplying power to the power supply means, wherein the finger operation unit subjects a piezoelectric body (7) containing piezoelectric elements to bending movement while supporting it at the front end, the rear end and a specified position between the front and rear ends to cause it to operate at high speed and stably, and a bar-like electrode (28) in which at least two conductors are disposed via an insulator is used as the power supply means, thereby downsizing the selector.