H. Stoll Gmbh & Co.

Stoll Gmbh and Company

Supfina Machinenfabrik Hentzen Gmbh & Co. Kg

Ernst Goller

Fritz Walker

Gunther Kazmaier

Thomas Stoll

Jurgen Ploppa

Franz Schmid

Adam Muller

Hermann Schmodde

Jochen Dieringer

Henning Schmidt

Gerd Mak

Horst Fries

Eugen Frosch

Herbert Seitz

Eugen Staiger

Hans D Trissler

Dieter Wurst

Udo Hermann

Udo Herman

Bertram Glaumer

J/u/ Rgen Ploppa

Hans-Gunther Haltenhof

Juergen Ploppa

Herbert Schneider

Adam Mueller

Herman Schmodde

Hans-Dieter Trissler

Heinz P Stoll

Albert Ostertag

Jochen Frei

Guenther Kazmaier

In a method for the production of intarsia knitted pieces on a flat-bed knitting machine, at least some of the yarn guides associated with each one of the intarsia areas and the respective needle bed are moved in a direction relative to each other when one of the needle beds is traversed in both lift directions by a carriage provided with one or a plurality of cams in the border area between two areas of intarsia, and the yarn guides are being coupled with the movement of the carriage in each intarsia area. At the end of a movement segment which extends at most across a number of intarsia areas corresponding to the number of cams, the carriage is reversed in its lift direction and returned, together with the yarn guide last used as well as with the yarn guide to be used for the following intarsia area, to the intarsia area last produced, without making a needle selection. In a further movement segment, a further number of intarsia areas corresponding at most to the number of cams is produced in the original lift direction. Becanuse of this a larger number of intarsia areas or colors can be knitted than corresponds to the number of cams in the carriage used without requiring steps which would reduce the production capacity and increase the costs.

Method for producing intarsia knitted goods and flat-bed knitting

Thread-tensioning and guide device provided for fastening to the needle-bed ends of a flat knitting machine has, on a stationary machine part (20), a pivotably mounted supporting arm (10) for each thread to be fed, the device parts influenced by the thread to be fed being distributed to the supporting arm (10) and to the stationary machine part (20), and, in the operating position of the supporting arm (10), parts of the stationary machine part (20) interacting with elements arranged on the supporting arm or being accessible through the supporting arm for setting purposes. This design of the device allows a favorable combination of a thread-tension brake influenced by a thread-tension regulator with a specially designed pick-up tensioner.

Thread-tensioning and guide device for flat knitting machines

In a flat knitting machine, the segments (10.1,11.1), of any desired width, which make up the needle beds (10, 11), are designed to be used with needles of different gauges, i.e. are formed with a different needle separation, so that needles of different gauges are used in adjacent needle bed segments (10.1, 11.1). On a flat knitting machine comprising a carriage (14/15) which can be traversed across the needle beds (10, 11) and has several cam systems (14.1-14.4; 15.1-15.4), the individual cam systems can be allocated to needles of different gauges, while at least one of the several cam systems may differ from the others by a different form of loop-transfer control curve.

Flat knitting machine

In the thread-guide arm (11), the thread-guide members (15 to 17) arranged above the thread-guide pulley (12) are formed in a thread-guide star (20) which is arranged immediately in front of a thread-restraining plate (21) and is preferably made in one piece with the latter. The thread-restraining plate (21) has a smooth outer edge having no acute angles, and the exposed edges of the thread-guide star (20) are rounded or bevelled, so that no threads can catch on the thread-guide star and the thread-restraining plate.

Thread-guide arm

In the procedure for ensuring a precisely positioned introduction of a substitute yarn in a knitting machine by means of a substitute yarn (15) which is attached by a knotter (13) to a running yarn (12), the machine is halted at the desired position for the change of yarn before or after formation of the connecting knot (16) and afterwards the length of yarn located between the knotter (13) and the yarn working position is drawn out past the connecting knot (16) and taken up to one side and the machine is only started up again when the yarn feeder (11) is feeding the substitute yarn.

Procedure and device for ensuring a precisely positioned introduction of

By the use of special latch needles (21) whose latch (14) can take up two stable positions lying within the limits of its pivotal movement and out of which it can be moved only against the action of a spring, there is ensured, even in fast running flat knitting machines with a transfer mechanism and with stitch presser and/or stitch hold-down elements, and even during the formation of long, loose stitches and loops, reliable trapping of the yarn and manipulation of the stitches and loops by the knitting elements. (FIG. 2)

The knitted fabric winding-up device is formed as an auxiliary device which can be located beneath the needle beds (21, 22) on a lower supporting cross member (10), at the front side of a flat knitting machine, from which it is removable, and by means of a winding roller for formation of the fabric package (24) is pivotable from an inner position to an outer position. The winding roller (13) can, even in the outer position, be driven by a motor located in the lower supporting cross member (10) or can be decoupled and turned by hand.

Knitted fabric winding-up device for flat knitting machines

A device for the offset control of the needle beds of a flat-bed knitting machine has a servomotor for the adjustment of one of the needle beds in relation to the other and has a position control circuit controlling the servomotor. So that it is possible in such a device, after an unintentional shut-down of the machine during knitting, to exactly reconstruct or reset the original or the about to be set position of the movable needle bed without damaging the knitted fabric present in the machine just produced, an actual value transducer device performing a set point/actual value comparison is provided, having an incremental transducer, the high resolution and accuracy of which is many times finer than the needle gauge and which aditionally has reference marks at least at the interval of the needle gauge of the needle bed but with the same high degree of accuracy, and an absolute value transducer, the resolution of which is at least the same as, preferably higher than the distance of the reference marks of the incremental transducer.

Device for the offset control of the needle beds of a flat-bed knitting

A front yarn guide element (11) of the yarn stop motion (10) has the shape of a yarn guide eye (12) formed by a wire spiral into which a yarn can be introduced from the side and deflected to all sides without danger of slipping out. The yarn guide eye (12) is provided with a supporting part (17) located so as to be longitudinally movable in the housing (18) of the yarn stop motion (10), so that the spacing of the yarn guide eye (12) from the position (B) at which the yarn stop motion (10) is secured is adjustable.

Yarn stop motion for textile machines

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.

Cam carriage for flat-bed knitting machine

Data processing apparatus for a flat knitting machine having several cam systems usable in both travel directions and having needles or needle jacks disengageable from the cam tracks of the cam systems, contains an optimisation circuit (15) with at least one microprocessor, with which circuit is achieved, with the data available from several store areas (16-20), whatever is the optimal limitation of the carriage stroke and at the same time an adjustment and pre-adjustment of the yarn guides (24) corresponding thereto, via thread guide carriers.

Flat knitting machine with data processing apparatus

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.

Device for control of a flat-bed knitting machine

In the dust extraction appliance for flat knitting machines, a vacuum is generated in the suction nozzles (17) by means of at least one suction-flow device (16) which is arranged on the slide of the flat knitting machine and into with a conveyed, via a flexible delivery line (20), compressed air which carries the sucked-up dust further into a dust collecting bag (18) via an exhaust-air duct (22).

Dust extraction appliance for flat knitting machines

The dust extraction device located on the cam carriage (13) of the flat knitting machine has separate, independently operable suction fans (27) for the front and rear needle beds (11,12), which, by lowering of the suction nozzles (29,30), the use of smooth-walled suction ducts (31,32) and coupling of the dust containers (37) with the suction ducts and with the suction fans (27) ensures a good cleaning effect with low expenditure of energy and a maintenance free operation.

Dust extraction device for flat knitting machines

The flat knitting machine (10) has, on the rear side of its machine body (12), bobbin holders for additional bobbins (19), the yarn of which can be processed on the same flat knitting machine or on an adjacent flat knitting machine (10'). The additional bobbin holders can be arranged on individually removable rear-wall panels of the flat knitting machine (10) (FIG. 1).

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Reutlingen, Germany

Ernst Goller