Abrégé

The device of the invention is adapted to spool threads (F) at a high count and at a high speed, and comprises: a means for rotating the spool (2); a rotation speed sensor (13) for said spool; a back-and-forth movement system (8) driven by an actuator or a motor (9); a sensor (14) measuring the instantaneous position of the thread guide; and a unit (12) for driving the actuator or the motor (9). The device is connected to programmed calculation means for, considering a target spooling ratio R: measuring the back-and-forth movement period; measuring and calculating the mean period of rotation of the spool; calculating the ratio of actual spooling R1 between the back-and-forth movement period (Pt) and the period of rotation of the spool (Pb); comparing R1 to the target spooling ratio R; if there is a difference between the actual value R1 and the target value R, correcting the running speed.

Classes IPC  ?

• B65H 54/38 - Dispositions pour éviter l'enroulage en ruban
• B65H 54/28 - Dispositifs de va-et-vientDispositions pour la mise en forme des paquets

Abrégé

The invention relates to a spindle comprising a device for pulling a thread and winding same on a spool (11) placed in a can or cradle (4), the rotation of which has stopped, said thread (F) rotating along a path surrounding said can or cradle (4). According to the invention, at least one of the movements required to pull and/or wind the thread (F) is transmitted from outside the space defined by the path of the thread into said space by means of at least one contactless magnetic coupler (14), the path of the rotating thread (F) passing through the air gap (15) of said magnetic coupler or couplers (14). The invention is characterized in that the coupler(s) is/are placed along an axis different from that of the spindle and consist(s) of two disks (16), (17) placed coaxially opposite each other, at least one of said disks having a plurality of permanent magnets (18).

Classes IPC  ?

• D01H 1/00 - Métiers à filer ou à retordre sur lesquels le renvidage du fil est effectué en continu
• D01H 1/10 - Métiers à filer ou à retordre sur lesquels le renvidage du fil est effectué en continu pour conférer une torsion multiple, p. ex. retordage à double torsion

Abrégé

The thread of the invention includes a high-tenacity elementary thread (FHT) having a low elongation capacity under load combined with a high tensile strength, and at least another extensible elementary thread (FE) having a higher elasticity and/or elongation capacity, and is characterised in that: the elementary threads are distributed into two groups (GHT) and (GE); the first group (GHT) includes the high-tenacity thread(s) (FHT); the second group (GE) includes the extensible thread(s) (FE); both groups are assembled by a direct cabling method, the group (GHT) comprising the high-tenacity thread(s) being arranged in the pot (7) of a direct cabling pin (3).

Classes IPC  ?

• D02G 3/28 - Fils doublés, retors ou fils câblés
• D02G 3/04 - Fils provenant de mélange ou autres filés ou fils contenant des composants faits de matières différentes
• D02G 3/44 - Filés ou fils caractérisés par la destination pour laquelle ils ont été conçus
• D02G 3/48 - Câblés pour pneumatiques
• D02G 3/16 - Filés ou fils faits de substances minérales

Abrégé

The invention relates to a method for the production of high-resistance cabled yarns, in particular for reinforcing structures for composite materials, in which two components or filaments (F1, F2) are cabled directly using a twisting spindle (3). According to the invention, the two filaments (F1 and F2) are joined and taken directly by a system for winding same on a receiving spool (17), in combination with braking members (2-9) which are adjusted such that tension T1 + T'1 of the first filament (F1) is equal to tension T2 of the second filament (F2) and the sum of tensions T1 + T'1 + T2 is equal to the winding tension.

Classes IPC  ?

• D02G 3/28 - Fils doublés, retors ou fils câblés

Abrégé

The spindle is firmly attached to a drive element (19), the first filament (F1), which enters via the end (4) of the spindle, re-emerges radially from this spindle at a plate (5) thereof, which rotates thereby forming a balloon shape (6), the second elementary filament (F2), which is paid out from one or more reels (8) located in a can (7) positioned above the spindle (3), passes through a braking device (9), the two filaments (F1, F2) come together at a cabling head (11) that is designed to equalize the progress of the two filaments (F1, F2) and their respective tensions by passing them over at least one rotary assembly (12) comprising tracks onto which said filaments are wound separately. The cabling head (11) comprises an auxiliary electric drive element (18). The auxiliary drive element (18) and the drive element (19) that drives the twisting spindle (3) are powered by one and the same control system (20) so that said drive elements revolve at the same speed, give or take slippage, which slippage manifests itself in a variation in the angular offset between the spindle (3) and the cabling head (11) corresponding to self-balancing of the tensions in the filaments (F1, F2). REFERENCE: Figure 2

Classes IPC  ?

• D02G 3/28 - Fils doublés, retors ou fils câblés
• D01H 7/86 - Dispositifs à torsion multiple, p. ex. dispositifs de retordage double torsion deux-pour-un

Abrégé

The first elementary yarn (F1) enters through the end (4) of the spindle, emerges radially from the latter at the level of the plate (5) of same, turns and forms a balloon (6). The second elementary yarn (F2) is unwound from one or more bobbins (8) disposed in a pot (7) placed above the spindle and passes through a braking device (9), the two yarns (F1, F2) being joined by means of a cabling head (11) rotated by the elementary yarn (F1) which forms the balloon, and in which the forward movement of the two elementary yarns and the respective tensions of same are equalized by passing through at least one rotating assembly (12) comprising two tracks onto which said yarns are wound separately. The elementary yarn (F2) coming from the pot reaches its entry track (P1b) on the rotating assembly (12b) without passing through eyelets or other guide means that cause significant friction.

Classes IPC  ?

• D02G 3/28 - Fils doublés, retors ou fils câblés