摘要:
A circular knitting machine with a device for transferring or carrying loops of knitting formed by the needles of one half of the needle cylinder to the needles of the other half of the needle cylinder (2), comprising at least one needle cylinder (2) which can be rotated about its own axis (2a) and a device (5) for transferring or carrying loops formed by the needles (4) of one half of the needle cylinder (2) to the needles (4) of the other half of the needle cylinder (2). The device (5) comprises a half-dial (6) which is provided with take up elements (26) for taking up the threads or loops and the takeup elements (26) can move on command along radial directions with respect to the half-dial (6) in order to take up and retain or release the threads or loops. The half-dial (6) can be turned over about a diametrical axis (7) of the needle cylinder (2) in order to face, by way of the takeup elements (26), the needles (4) of one half of the needle cylinder (2) or the needles (4) of the other half of the needle cylinder (2). The half-dial (6) is accommodated inside the needle cylinder (2).
摘要:
A single-cylinder circular knitting machine, including a needle cylinder (2) and a circular plate (5) that is arranged above the needle cylinder and coaxially thereto. The circular plate is constituted by two portions (5a, 5b), one of which can rotate with respect to the other about a diametrical axis (12) of the circular plate. An actuation device (14-17) is also provided which acts on command on the portion (5a) of the circular plate that can rotate with respect to the other one (5b), in order to move it from a first position, in which it is co-planar with respect to the other portion, to a second position, in which it is arranged so as to face the other portion from below, or vice versa.
摘要:
Double-cylinder circular knitting machine for hosiery or the like. The machine comprises a lower needle cylinder (2) having a substantially vertical axis (2a) and an upper needle cylinder (3) that is arranged above and coaxially with respect to the lower needle cylinder (2). A plurality of axial grooves (4) is formed in the skirt of the needle cylinders (2, 3) and each groove (4) accommodates a double-beak needle (5) that can move axially along the corresponding groove (4). In each one of the grooves (4) there is a lower pusher (6), which is arranged below the needle (5) and faces the lower head (5a) of the needle with its upper end (6a), and an upper pusher (7), which is arranged above the needle (5) and faces the upper head (5b) of the needle (5) with its lower end (7a). Cams (11, 12, 13, 17, 18, 19) are provided for the actuation of the lower pushers (6) and of the upper pushers (7) to make them slide upwards or downwards in their respective grooves (4) to push up or down the interposed needles (5) located in the lower (2) or in the upper (3) needle cylinder or to transfer the needles (5) from the lower (2) to the upper (3) needle cylinder or vice versa.
摘要:
A method for making hosiery items, or tubular knitted items in general, which have a closed toe by using a single-cylinder circular machine. The method comprises at least one first step, in which the needle cylinder (1) is actuated with an alternating rotary motion about its own axis (1a) to form a pocket (2) with heel- or toe-type knitting, using a set of needles (3a) located in one half of the needle cylinder (1), and a second step, in which the needle cylinder (1) is actuated with a continuous motion in order to form a tubular portion of the item. Before the beginning of the second step, at least one of the initial rows of knitting (4) formed in the first step, which is arranged inside the needle cylinder (1) at the end of the first step along a chord which runs between the two end needles (3'a) of the set of needles (3a) used in the first step, is engaged, starting from one of the two end needles (3'a), and gradually moved above the needles (3b) located in the other half of the needle cylinder (1) and knitted in by them with the first row of knitting (4) formed at the beginning of the second step.
摘要:
A method for producing hosiery items or tubular knitted items having a closed end with a circular hosiery knitting machine provided, proximate to the needle work area, with a transfer element which faces one half of the needle cylinder and is provided with thread takeup elements (1) which can be actuated radially to the needle cylinder and are suitable to engage the thread or threads fed by at least one feed of the machine, in the region between two contiguous needles. The transfer element is able to turn over about a diametrical axis (7) of the needle cylinder. The method consists in performing a first step, during which the needle cylinder is actuated with n oscillations about its own axis (5) with an oscillation angle of substantially 180 o , in order to cause the passage, in front of a thread feed of the machine, of a first half (3a) of the needle cylinder which is faced by the transfer element. During this first step, the corresponding thread takeup elements (1) that are arranged in a sector that is less than 180 o wide are extracted from the transfer element and 1/n of the needles (2a) of the first half (3a) of the needle cylinder are lifted into the active position at each oscillation and are then lowered after taking up the thread or threads, which rests or rest on the takeup elements (1) extracted from the transfer element. A second step is then performed during which the previously extracted takeup elements are retracted into the transfer element so as to retain the thread that is rested on them. Then a third step, during which heel knitting is performed with the needles of the first half (2a) of the needle cylinder (3a), and a fourth step, during which the transfer element is turned over about the diametrical axis (7) and made to face the second half (3b) of the needle cylinder, are performed. During a fifth step, the thread or threads retained by the takeup elements (1) and the knitted loops are transferred from the needles (2a) of the first half (3a) of the needle cylinder that are arranged laterally to the sector of the transfer element to the needles (2b) of the second half (3b) of the needle cylinder. Finally, the machine is actuated so as to complete the item as a continuation of the previous processes.
摘要:
A method for making hosiery items, or tubular knitted items in general, which have a closed toe by using a single-cylinder circular machine. The method comprises at least one first step, in which the needle cylinder (1) is actuated with an alternating rotary motion about its own axis (1a) to form a pocket (2) with heel- or toe-type knitting, using a set of needles (3a) located in one half of the needle cylinder (1), and a second step, in which the needle cylinder (1) is actuated with a continuous motion in order to form a tubular portion of the item. Before the beginning of the second step, at least one of the initial rows of knitting (4) formed in the first step, which is arranged inside the needle cylinder (1) at the end of the first step along a chord which runs between the two end needles (3'a) of the set of needles (3a) used in the first step, is engaged, starting from one of the two end needles (3'a), and gradually moved above the needles (3b) located in the other half of the needle cylinder (1) and knitted in by them with the first row of knitting (4) formed at the beginning of the second step.
摘要:
A method for producing hosiery items or tubular knitted items having a closed end with a circular hosiery knitting machine provided, proximate to the needle work area, with a transfer element which faces one half of the needle cylinder and is provided with thread takeup elements (1) which can be actuated radially to the needle cylinder and are suitable to engage the thread or threads fed by at least one feed of the machine, in the region between two contiguous needles. The transfer element is able to turn over about a diametrical axis (7) of the needle cylinder. The method consists in performing a first step, during which the needle cylinder is actuated with n oscillations about its own axis (5) with an oscillation angle of substantially 180 o , in order to cause the passage, in front of a thread feed of the machine, of a first half (3a) of the needle cylinder which is faced by the transfer element. During this first step, the corresponding thread takeup elements (1) that are arranged in a sector that is less than 180 o wide are extracted from the transfer element and 1/n of the needles (2a) of the first half (3a) of the needle cylinder are lifted into the active position at each oscillation and are then lowered after taking up the thread or threads, which rests or rest on the takeup elements (1) extracted from the transfer element. A second step is then performed during which the previously extracted takeup elements are retracted into the transfer element so as to retain the thread that is rested on them. Then a third step, during which heel knitting is performed with the needles of the first half (2a) of the needle cylinder (3a), and a fourth step, during which the transfer element is turned over about the diametrical axis (7) and made to face the second half (3b) of the needle cylinder, are performed. During a fifth step, the thread or threads retained by the takeup elements (1) and the knitted loops are transferred from the needles (2a) of the first half (3a) of the needle cylinder that are arranged laterally to the sector of the transfer element to the needles (2b) of the second half (3b) of the needle cylinder. Finally, the machine is actuated so as to complete the item as a continuation of the previous processes.
摘要:
In a first step of the method for manufacturing socks with a single-cylinder circular knitting machine (1) a needle cylinder (2) is oscillated about its own axis with an oscillation angle of about 180 o to move half of the needle cylinder that faces a half-platen (3) such that it passes in front of a feed of the machine. During these oscillations, engagement elements (6) are extracted radially from the half-platen (3) towards the needles (7) of the machine, at least one thread dispensed at the feed, and lifting to the knitting position, at each oscillation, 1/n uniformly spaced needles (7) of the mentioned half of the needle cylinder (2), varying the needles that are moved into the knitting position in the subsequent oscillation or oscillations, and lowering the needles after engaging the thread or threads, which rests on the engagement elements (6). A second step is then performed, during which the engagement elements (6) are retracted towards the half-platen (3), retaining the thread or threads that rest thereon. During a third step, heel knitting is performed with the needles (7) of the above-mentioned half of the needle cylinder (2). During a fourth step, the half-platen (3) is overturned about the diametrical axis (4) such that it faces the other half of the needle cylinder. In a fifth step, the threads previously retained by the engagement elements (6) are passed to the needles (7) of the other half of the needle cylinder (2) . Finally, the machine is actuated for normal operation so as to complete the product.
摘要:
A circular knitting machine with a device for transferring or carrying loops of knitting formed by the needles of one half of the needle cylinder to the needles of the other half of the needle cylinder (2), comprising at least one needle cylinder (2) which can be rotated about its own axis (2a) and a device (5) for transferring or carrying loops formed by the needles (4) of one half of the needle cylinder (2) to the needles (4) of the other half of the needle cylinder (2). The device (5) comprises a half-dial (6) which is provided with take up elements (26) for taking up the threads or loops and the takeup elements (26) can move on command along radial directions with respect to the half-dial (6) in order to take up and retain or release the threads or loops. The half-dial (6) can be turned over about a diametrical axis (7) of the needle cylinder (2) in order to face, by way of the takeup elements (26), the needles (4) of one half of the needle cylinder (2) or the needles (4) of the other half of the needle cylinder (2). The half-dial (6) is accommodated inside the needle cylinder (2).
摘要:
A process and an apparatus for reducing the length of the lead-in thread in double-cylinder circular hosiery-making or knitting machines in which the thread, fed by a corresponding thread guide (1), is clamped at its end, before knitting begins, by a thread cutting and clamping device (2) which laterally faces the needle cylinders (4,5) of the machine downstream of the position of the thread guide, relative to the direction in which the needle cylinders (4,5) rotate about their own axis (6), with respect to the thread guide (1) and to the cutting and clamping device (2). The process consists in keeping the thread (12) clamped by the cutting and clamping device (2) even after the thread has been taken up by the needles (60) at the beginning of the knitting process, and in cutting the portion of thread which, at the beginning of the knitting process, lies between the first needle that took up the thread and the point where the thread is clamped in the cutting and clamping device (2). The thread is cut by means of a lead-in cutting device (3) adjacent to the first needle that took up the thread (12) and therefore the lead-in is very short and requires no further cutting.