Patent application number | Description | Published |
20080225305 | Device for the Optical Analysis, Including Two-Dimensional, of a Thread or Yarn - A device for the optical analysis, including two-dimensional, of a thread or yarn (F) fed to a textile machine, said device comprising at least one light emitter element ( | 09-18-2008 |
20130119177 | YARN STORAGE FEED DEVICE - A storage feed device for a yarn which unwinds from a corresponding bobbin and is fed to a textile machine. The device includes a rotary or fixed drum and an optical sensor member arranged to sense the movement of the yarn towards the textile machine. The optical sensor includes a plurality of emitters and receivers between which a light beam is generated and is interrupted by the yarn during its movement. The optical sensor includes a first fixed part and a second fixed part which includes the emitter and receiver elements, the first part being coaxial with the rotary member, the second being annular and surrounding the first part, the yarn moving between the parts. | 05-16-2013 |
20130192436 | CUTTING DEVICE OF A TEXTILE YARN DURING ITS FEEDING TO AN OPERATING DEVICE - A device for cutting a textile yarn during its feed to an operator element such as a textile machine for its processing or a member for feeding it to such a machine. The device includes a blade member inserted into a housing presenting at least one aperture for passage of the yarn, the blade member carried by a movable support element subjected to an actuator for its movement. The movable support element being able to assume two working positions, a first position in which the blade member is spaced from the yarn and a second position in which the member cooperates with the yarn and cuts it. The actuator include a bistable electromagnet, a spring mounted about the movable support member urging the blade member into the cutting position. | 08-01-2013 |
20130193251 | YARN FEED-SEPARATION DEVICE - A device to enable yarn to be fed for textile applications and the relative turns to be separated. The device includes a wheel/drum directly or indirectly motorized for rotation about its axis, the wheel/drum presenting in its lateral surface a series of slits to receive relative blades the projecting profile of which enables the yarn turns wound on the wheel/drum to advance. The blades form an assembly which rotates together with the wheel/drum but about an axis having an inclination and/or an eccentricity relative to the axis of the wheel/drum, such that the profile projection of the blades from the relative slits varies gradually along the perimeter of the wheel/drum, from a minimum to a maximum, to then return to a minimum, but remains constant with time. The blades have a length to be able to receive all the yarn turns which concern the device. | 08-01-2013 |
20130228643 | DEVICE FOR FEEDING A YARN TO A TEXTILE MACHINE HAVING A YARN-CUTTING DEVICE - A device for feeding a yarn to a textile machine includes a housing with which a rotary member is associated to cooperate with the yarn unwinding from a package and directed, on leaving the device, to the machine where it is processed. Correct feed of the yarn is monitored by a feed controller associated with the housing in accordance with at least one measured parameter related to the rotary member or to an intrinsic characteristic of the yarn such as its tension or its feed velocity. A yarn cutting member is provided. This is connected to and controlled by the controller on the basis of the measured parameter of the yarn. The cutting member is activated by the controller to cut the yarn whenever the parameter monitored by the controller has a value exceeding a predetermined required value. | 09-05-2013 |
20140110523 | DEVICE AND METHOD FOR SENSING A CHANGE OF YARN FEED BOBBIN - A device for sensing the change of feed bobbin for a yarn fed to a textile machine and originating from a first bobbin or a second bobbin connected together in head-tail manner includes at least one first sensor and one second sensor at a passage section of a support body, a control unit associated with the first sensor and second sensor. The first sensor and the second sensor generates first and second presence signals when the yarn unwound from the first bobbin or from the second bobbin passes in front of the first sensor or second sensor. The control unit receiving as input the first and/or second presence signal to generate at least one output signal representative of the first bobbin or of the second bobbin on the basis of the first or second presence signal. | 04-24-2014 |
20140291435 | DEVICE FOR FEEDING YARN TO A TEXTILE MACHINE - A device for feeding yarn to a textile machine, including a main body defining an entry portion and an exit portion for yarn; a rotatable drum for winding the yarn originating from the entry portion and a motor connected to the drum for rotating the drum; a control member active at least on the motor to regulate its torque and velocity; exit portion being selectively switchable between a first configuration in which it defines a free exit section for the yarn, through which the exiting yarn defines a closed path about a rotation axis of the drum, and a second configuration in which it defines a limited exit section, through which the exiting yarn defines an open path. | 10-02-2014 |
20140299703 | METHOD AND DEVICE FOR STORING YARN IN ORDER TO FEED THREAD WITHOUT CREATING TWISTING THEREOF - A method for supplying a thread to a textile machine without creating torsions thereof includes picking up the thread from a reel, winding it on a rotary drum driven by an electric motor thereof and supplying such thread to the textile machine, preferably at constant tension and/or quantity. The method provides for measuring the amount of thread leaving the rotary drum and the amount of thread wound thereon and intervening on the rotation of such drum so the amount of thread leaving the drum is equivalent to the amount loaded thereon to avoid the creation of torsion on the thread. | 10-09-2014 |
20140306051 | YARN FEEDER OF STORAGE TYPE WITH MAGNETIC BRAKE - Yarn feeder including a body carrying a drum on which turns of yarn from a spool are wound; a tension sensor for measuring exiting yarn tension value, a braking member including a first permanent magnet and a fixed second magnet, regulator for varying action the second magnet exerts on the first permanent magnet, and a control unit to control the regulator. The first magnet is annular and movable parallel to the axis of the drum and along it between a first position where the first permanent magnet enables pressing the yarn against a counteracting element fixed to the drum and a second position where this effect does not occur. The control unit receives tension values measured by the tension sensor, comparing them with a predetermined value and intervening in real time on the regulator to adjust tension value to predetermined value when these two values do not coincide. | 10-16-2014 |
20140326819 | SYSTEM AND METHOD FOR FEEDING METAL WIRES AT CONSTANT TENSION - A system for supplying metal wire to a machine by a wire supply device. The wire having a desired tension detected by a tension sensor. The supply device has at least one rotary member driven by an actuator thereof on which the metal wire is wound for a fraction of rotation or several rotations and adapted to supply the wire to the machine with predefined tension under the action of a control unit. The system has a detector, for detecting at least one wire physical characteristic, downstream of the supply device and connected to the control unit to provide to the latter the data regarding each detected physical characteristic. The control unit intervening on the rotary member for adjusting the wire tension for maintaining, at least approximately around a reference value, the characteristic of the wire controlled. The latter is at least one dimensional and/or electrical characteristic. | 11-06-2014 |
20150014465 | POSITIVE FEEDER DEVICE FOR FEEDING METAL WIRES AT CONSTANT TENSION - A metal wire feeder device including a body presenting a wire braking member, one or more pulleys driven by respective motors about which the wire is wound, the wire before reaching a processing machine passing through a compensator member and a tension sensor, an electronic control unit able to continuously measure the tension value and make it uniform at a predetermined value by acting on a first regulator loop operating on the motors and a second regulator loop operating on the compensator member. The electronic control unit operates automatically in making the tension uniform at the predetermined value, on the basis of the fed wire quantity or of the wire feed velocity. | 01-15-2015 |
20150039120 | SIMPLIFIED SYSTEM AND METHOD FOR MANAGING THE FEED OF A PLURALITY OF YARNS AT CONSTANT TENSION AND/OR VELOCITY TO A TEXTILE MACHINE - A system and method for managing the feed of a plurality of yarns at constant tension and/or velocity to a textile machine of circular, loom or yarn preparation type, the yarns being fed to the machine by a corresponding plurality of feed devices. Setting controller is provided, connected to the plurality of devices and arranged to set their operation, the setting controller receiving synchronization signals from the machine and measuring on the basis of these signals every portion of an article production cycle, the cycle being divided into different stages, the setting controller acting on each individual feed device on the basis of the stages such that each feed device feeds the respective yarn with predefined tension and/or velocity individual to each of the stages. | 02-05-2015 |