System for preparing a yarn bobbin for mounting on a winder and method of implementing it

Abstract

The present invention relates to a system for preparing a bobbin (1) for mounting on a winder, comprising: a support shaft (2) of the cylindrical core of the bobbin (1), which is mounted on a movable arm (3) in order to adjust the position of the bobbin (1) in the case of preparation of said bobbin within said system, an isolating device (4) of the first end (11) of the yarn at the cylindrical core of the bobbin (1), an isolating device (5) of the second end (12) of the yarn at the peripheral surface of the bobbin (1).

Description

Technical Field

[0001] This invention relates to the field of yarn spool management systems, and more particularly to the field of systems for preparing yarn spools for mounting on shared winding machines. Background Technology

[0002] Yarn or rope is typically stored in the form of spools or bobbins. In the latter, the yarn is wound around a core that forms the axial structure, such that the wound yarn is distributed along the entire length of the core. The resulting bobbin takes a substantially cylindrical shape. In the industrial production or processing of yarn, these yarns are wound into one or more corresponding bobbins at the end of the operation. Thus, these bobbins realize a storage format that allows for easy management of yarn until it is used at its final destination. Therefore, each bobbin can be managed individually in terms of handling, storage, movement, and distribution operations; these operations can be performed manually or with intervention from potentially automated machines.

[0003] However, it should be noted that when the yarn is wound onto a spool, the first end of the yarn is located at the core, which is at the center of the spool, while the second end of the yarn is located on the radial or outer circumferential surface of the formed spool. The first end of the yarn is typically secured to the center of the spool by various turns of the yarn wound around it, which cover the first end of the yarn within the spool, or sometimes secured to the center of the spool through notches on the flange at the end of the core. The second end of the yarn on the spool surface is usually knotted to prevent it from remaining loose and causing separation or unwinding during various operations and displacements of the spool, or even partially pulling out a portion of the yarn length. In industry, this knotting of the yarn ends on the spool surface is essential to prevent the yarn from being gripped by machines and causing operational problems, thereby posing a hazard to the production, processing, or management area.

[0004] In industrial implementation, these yarn spools allow for continuous supply to the machine. For this purpose, multiple spools are positioned at corresponding spindles on the winding machine. Simple traction of the yarn by the machine or specialized equipment allows the yarn to travel from its spool. The continuity of yarn supply to the machine typically requires securing the ends of the yarn on the first spool to the ends of the yarn wound on a second, juxtaposed spool. Therefore, when the yarn on the first spool is emptied, the yarn on the second spool automatically takes over. Thus, the machine's supply continues uninterrupted as the yarn on one spool is replaced by that on another.

[0005] However, in order to achieve a continuous supply of yarn to the machine, each end of the yarn wound on different spools must be accessible so that they can be joined together. Since spools typically have a first end with the wound yarn loops inserted into the center of the spool, and a second end knotted on the outer circumferential surface for safety reasons, this operation of joining yarns from different spools together requires adjusting the spools before they are mounted on the winding machine. Summary of the Invention

[0006] The object of the present invention is to overcome this problem by proposing a system that allows the isolation and release of the ends of the yarn wound on the spool, so that the yarn can be used specifically for continuous supply to machines.

[0007] Therefore, the subject of this invention is a system for preparing a yarn bobbin for mounting on a winding machine, comprising:

[0008] - A support shaft for supporting the cylindrical core of the yarn bobbin, which is mounted on a movable arm to adjust the position of the bobbin during bobbin preparation within the system.

[0009] - A separating device for the first end of the yarn located at the cylindrical core of the spool.

[0010] - An isolation device for the second end of the yarn located on the outer peripheral surface of the bobbin.

[0011] The present invention also relates to a method for implementing the bobbin preparation system according to the present invention, characterized in that the method comprises:

[0012] - The step of positioning the end of the cylindrical core of the yarn spool toward the first end of the yarn located at the cylindrical core of the spool by means of a movable arm that carries the support shaft.

[0013] - The step of isolating the yarn at the first end located in the cylindrical core of the spool.

[0014] - The step of isolating the second end of the yarn located on the outer peripheral surface of the bobbin.

[0015] - Steps to remove the spool from the system. Attached Figure Description

[0016] The invention will be better understood from the following description, which relates to preferred embodiments given as non-limiting examples and explained with reference to the accompanying schematic diagrams, wherein:

[0017] Figure 1 A schematic diagram illustrating an example of a system for preparing yarn spools according to the present invention is shown. Detailed Implementation

[0018] This invention relates to a system for preparing a bobbin 1 for mounting on a winding machine, comprising:

[0019] - A support shaft 2 for supporting the cylindrical core of the yarn bobbin 1, which is mounted on a movable arm 3 to adjust the position of the yarn bobbin 1 during its fabrication within the system.

[0020] - Isolation device 4 at the first end 11 of the yarn located at the cylindrical core of the bobbin 1.

[0021] - Isolation device 5 at the second end 12 of the yarn located on the outer peripheral surface of the bobbin 1.

[0022] The preparation system of the present invention is arranged to allow the release of each end 11, 12 of the yarn on the spool 1, thereby allowing a row assembly of the ends of the corresponding yarns on multiple successive spools to allow for continuous machine supply. For safety, each end 11, 12 of the yarn on the spool 1 is attached to the body of the spool 1 by a sliding knot or false knot on the outer peripheral surface of the spool 1 or by clamping between the core of the spool 1 and the yarn loops wound around the core. Each end of the yarn on the spool 1 has a specific attachment on the spool 1, therefore the system includes two devices 4, 5, which are respectively configured to allow the isolation of each end 11, 12 of the yarn on the spool 1. In the system of the present invention, the spool 1 is reversibly mounted on a movable arm 3 by a support shaft 2. Thus, in conjunction with a dedicated motorized mechanism, the movable arm 3 allows for displacement and / or adjustment of the position of the spool 1 relative to each of the isolation devices 4, 5 for each end 11, 12 of the yarn on the spool 1. Preferably, the movable arm 3 is arranged to hold the support shaft 2 carrying the spool 1 along a substantially horizontal axis. This arrangement thus allows for the prevention of accidental slippage of the spool 1, which would cause it to retract from the support shaft 2. According to an example related to a structural variation, the support shaft 2 has a slight inclination that allows the spool 1, which is mounted to the support shaft 2 by gravity, to be held in place by gravity. According to an example related to another structural variation that may be complementary to the above variation, the end of the support shaft 2 (where the spool 1 is mounted) includes a locking mechanism for locking the spool 1 onto the support shaft 2, which allows for limiting or even preventing translation of the spool 1 relative to the support shaft 2. The spool 1 is also mounted on the support shaft 2 so as to prevent axial pivoting with respect to the support shaft 2, such that axial pivoting of the support shaft 2 causes the spool 1 to rotate about its axis.

[0023] According to an example of a structural variation of the system relating to the invention, the system includes a frame forming a support structure on which at least one of two isolating devices 4, 5 at the ends 11, 12 of the yarn of the spool 1 is mounted. A movable arm 3 carrying the spool 1 may also be mounted on the frame. According to an alternative structure, the movable arm 3 is carried by a separate structure accessible to the frame, which carries at least one of the two isolating devices 4, 5 at the ends 11, 12 of the yarn of the spool 1. As a structural example, the frame forms a retainer into which the spool 1 carried by the movable arm 3 is inserted and moved to allow optimized interaction with each isolating device 4, 5 mounted on the frame. Thus, the different components of these isolating devices 4, 5 mounted on the frame are preferably oriented toward the interior of the frame for spatial positioning around the frame for receiving the spool 1 carried by the movable arm 3.

[0024] According to an example related to a structural variation of the system of the present invention—which may be combined with one or more of the variations detailed above—the isolation device 4 at the first end 11 of the yarn includes:

[0025] - Suction mechanism 41, wherein the airflow of the suction mechanism is oriented along a central axis substantially parallel to or aligned with the support shaft 2, the support shaft 2 being arranged to interact with the cylindrical core of the yarn beam 1.

[0026] - A clamping mechanism 42, which is capable of clamping a portion of the yarn near the first end 11 of the yarn from the spool 1, the clamping mechanism 42 being located between the suction mechanism 41 and the end of the support shaft 2 of the yarn spool 1.

[0027] The first end 11 of the yarn is located at the core of the spool 1 and is thus held between the core of the spool 1 and the yarn loops wound around the core. However, the first loop of yarn winding around the core of the spool 1 is generally performed in a disordered manner relative to the winding of the loops when the spool 1 begins to be formed. In fact, at the end of the core of the spool 1, the yarn loops formed by the first loop of yarn tend to protrude from the basic cylindrical shape of the spool 1. Therefore, the suction mechanism 41 of the isolation device 4 of the first end 11 of the yarn is arranged to suction at least one of these loops of yarn that protrude from the cylinder of the spool 1 at the core of the spool 1. The clamping mechanism 42 is configured to allow clamping one or more of these loops of yarn on the spool 1, such that by pulling on these loops, the clamping mechanism 42 can extract a portion of the yarn closest to the core of the spool 1. Thus, the spool 1 unfolds from its cylindrical center through this portion of yarn. It should be noted that this traction of the yarn on the bobbin 1 by the clamping mechanism 42 is performed in cooperation with the displacement of the bobbin 1 relative to the clamping mechanism 42. Thus, this displacement of the bobbin 1 can be performed by the movable arm 3 that carries the bobbin 1 and / or by the displacement mechanism of the clamping mechanism 42.

[0028] According to an example of a preferred configuration of the isolation device 4 at the first end 11 of the yarn, the suction mechanism 41 includes at least one suction nozzle mounted at the end of a preferably flexible tube, particularly a tube associated with a fan. The suction nozzle is arranged to generate an airflow substantially aligned with the support shaft 2 of the spool 1. This alignment of the support shaft 2 with the airflow can be achieved and / or adjusted by displacement of the movable arm 3 carrying the spool 1 and / or by displacement of the suction nozzle. The alignment of the airflow with the support shaft 2 allows the suction of the yarn and / or yarn loops such that the yarn is stretched along a substantially straight axis between its point of departure from the spool 1 and its point of entry into the suction mechanism 41, i.e., at the nozzle. Therefore, this arrangement allows for limiting, or even avoiding, friction between the yarn and one or more portions of the spool 1, which could complicate the management of the portion of yarn being suctioned and the isolation of the first end 11. Furthermore, this arrangement allows for the generation of an airflow during suction via the nozzle, which acts optimally on the portion of the yarn to be isolated. Furthermore, this arrangement helps to optimize the spatial volume of the system according to the invention by positioning the suction mechanism 41, especially its nozzle, so that in its operation it does not interfere with the isolation device 4 and / or other components of the system according to the invention.

[0029] According to another preferred structural example of the isolation device 4 at the first end 11 of the yarn—which can be combined with the foregoing example—the clamping mechanism 42 includes a pair of jaws, each jaw including an edge or surface with a shape complementary to the edge or surface of the corresponding jaw. For example, these jaws are made in the form of two substantially straight parts, such that each of them carries a flat surface on which the yarn and / or at least one yarn loop under the action of the suction airflow can be clamped. The clamping surface is preferably covered with a gripping or anti-slip material to supplement the retention of the yarn clamped by the jaws. The material can also be elastic to allow it to deform and adjust to the volume of the clamped yarn. For example, such a gripping or anti-slip material is made of rubber. The jaws of the clamping mechanism 42 are associated with a motor device that allows the two jaws to separate and approach while simultaneously abutting against each other. In the separated position, the two jaws are arranged to be positioned on both sides of the airflow drawn by the suction mechanism 41, for example, on both sides of the nozzle orifice of the suction mechanism 41. In a close proximity position, the two jaws are then positioned between the nozzle orifice of the suction mechanism 41 and the end of the core of the spool 1, at which the first end 11 of the yarn is isolated. Preferably, the operation of the motor device is coordinated on the one hand with the operation of the suction mechanism 41, and on the other hand with the position of the spool 1 relative to one or the other component of the isolation device 4 for the first end 11 of the yarn.

[0030] According to another structural example of the isolation device 4 at the first end 11 of the yarn, the suction mechanism 41 and the clamping mechanism 42 are respectively directly or indirectly mounted and / or fixed on the frame of at least one of the two isolation devices 4, 5 at the ends 11, 12 of the yarn carrying the bobbin 1.

[0031] According to another structural example of the isolation device 4 at the first end 11 of the yarn—which can be combined with one or more of the structural examples detailed above—the operation of the jaws of the clamping mechanism 42 and the operation of the fan of the suction mechanism 41 are controlled by a dedicated computer unit capable of integrating software and / or operating programs for these two mechanisms 41, 42. The operation of these two mechanisms 41, 42 can also be associated with the displacement and position of the movable arm 3 carrying the yarn bobbin 1, more specifically with the positioning of the bobbin 1. Furthermore, according to structural variations, the computer unit participates in the operation of the movable arm 3 with respect to the positioning of various components of the isolation device 4 at the first end 11 of the yarn. The jaws of the clamping mechanism 42 coordinate with the suction mechanism 41 such that, on the one hand, the suction airflow allows one or more yarn loops protruding from the basic cylindrical shape of the bobbin 1 to separate from the bobbin 1; on the other hand, these loops can be clamped by the two jaws of the isolation device 4. The displacement of the clamping jaws relative to the spool 1 causes these jaws to move away from the spool 1, allowing a portion of the yarn located at the core of the spool 1 to be pulled and separated from the spool 1, or even separated from the core of the spool 1. The slack in the portion of the yarn as the jaws separate causes the separated portion of the yarn to be sucked up by the suction mechanism 41, keeping this portion of the yarn stretched between the spool 1 and the nozzle of the suction mechanism 41. Moving the separated jaws closer to the spool 1 and then clamping a second portion of the yarn, and then moving the clamping jaws away from the spool 1, allows a new portion of the yarn to be separated from the core of the spool 1. It should be noted that, additionally, the computer unit is also capable of controlling the operation of the movable arm 3 with respect to the loading and / or unloading operations of the spool 1 on the support shaft 2 of the movable arm 3.

[0032] According to an example of a structural variation of the system of the present invention—which may be combined with one or more of the variations detailed above—the isolation device 4 of the first end 11 of the yarn also includes an identification device for identifying the quantity of a portion of yarn held by the clamping mechanism 42. In the case of repeating the following sequential operations: clamping a portion of yarn at the end of the core of the spool 1 by the jaws, moving the jaws away from the spool 1, and then opening the jaws to release the portion of yarn held stretched by the suction mechanism 41, the isolation device 4 of the first end 11 of the yarn must be able to identify whether the portion of yarn drawn by the suction mechanism 41 comprises one or more loops of yarn or a single yarn. Thus, this identification of a single yarn allows determination of whether the first end 11 of the yarn on the spool 1 can be isolated by the isolation device 4, which is subsequently located at the suction mechanism 41, or even at the tube of the mechanism 41. As a structural example, the identification device that allows this identification corresponds to a shooting device such as a camera, whose field of view points at least to the space between the suction mechanism 41 and the spool 1. As a preferred configuration, the identification device is associated with a yarn illumination mechanism and / or a potentially luminous background, the background being arranged to highlight a portion of the yarn located in front of it. Thus, the background and the imaging device are positioned on either side of the central axis of a portion of the yarn located between the core of the spool 1 and the suction mechanism 41. Preferably, the identification device is associated with a computer unit, such as a computer unit that coordinates the operation of the jaws of the clamping mechanism 42 and the operation of the fan of the suction mechanism 41. This computer unit is configured to evaluate the number of yarn strands present between the suction mechanism 41 and the spool 1. This evaluation can be performed by measuring the yarn thickness on an image, for example by determining the number of pixels, and / or by comparing it with a pre-recorded yarn thickness value, and / or by comparing the image with a pre-recorded image corresponding to a single strand of yarn stretched between the suction mechanism 41 and the spool 1. According to a supplementary structural example, the identification device is also mounted on a frame that is independent of or shares with other components of the isolation device 4 at the first end 11 of the yarn.

[0033] According to an example of a structural variation of the system of the present invention—which may be combined with one or more of the variations detailed above—the isolation device 4 for the first end 11 of the yarn also includes a cutting tool 43. The cutting tool 43 is preferably positioned between the suction mechanism 41 and the bobbin 1. The cutting tool includes at least one blade associated with a counterblade, which can also be formed from blades. The cutting tool 43 is associated with a motor mechanism that specifically allows movement of the blade relative to the counterblade. The cutting tool 43 may also be mounted at the end of a movable arm that allows movement between a separated position and a working position that allows yarn cutting at the portion of the yarn stretched between the suction mechanism 41 and the bobbin 1. When the yarn stretched between the suction mechanism 41 and the bobbin 1 is identified as a single strand, the first end 11 of the yarn on the bobbin 1 (which includes multiple yarn loops and may even include knots) is then isolated at the suction mechanism 41. The cutting tool 43 allows the first end 11 of the yarn on the spool 1 to separate relative to the rest of the spool 1, such that at the cutting point, the single strand of yarn still attached to the spool 1 forms a new first end 11 of the yarn on the spool 1, which is free and accessible for manipulation. According to a supplementary structural example, the cutting tool 43 is also mounted on a frame, possibly by means of a movable arm carrying the cutting tool, the frame being independent of or sharing with other components of the isolation device 4 for the first end 11 of the yarn.

[0034] According to an example related to a structural variation of the system of the present invention—which may be combined with one or more of the variations detailed above—the isolation device 5 at the second end 12 of the yarn includes:

[0035] - A suction mechanism 51, wherein the airflow of the suction mechanism is oriented substantially perpendicular to the central axis of the support shaft 2, the support shaft being arranged to interact with the cylindrical core of the yarn beam 1.

[0036] - A clamping mechanism 52, which is capable of clamping a portion of the yarn on the bobbin 1 near the second end 12 of the yarn, is positioned between the suction mechanism 51 and the support shaft 2 of the yarn bobbin 1.

[0037] The second end 12 of the yarn is positioned on the outer peripheral surface of the bobbin 1 and attached to the body of the bobbin 1 by a sliding knot or false knot on the outer peripheral surface of the bobbin 1. Therefore, a portion of the yarn end 12 typically has a loop shape, which engages between one or more turns of the yarn located on the outer peripheral surface of the bobbin 1, i.e., its rotating surface. The suction mechanism 51 of the isolation device 5 for the second end 12 of the yarn is arranged to suction the yarn end 12 that forms a free lead on the surface of the bobbin 1. The clamping mechanism 52 is configured to allow clamping of the free end 12 of the yarn on the bobbin 1, such that by traction, the clamping mechanism 52 can release the loop of the yarn end 12 engaged between the turns of the bobbin 1. This traction of the yarn on the bobbin 1 by the clamping mechanism 52 is achieved in cooperation with the displacement of the bobbin 1 relative to the clamping mechanism 52, more specifically, by pivoting the bobbin 1 about its axis, i.e., about the axis of the support 2. This displacement of the spool 1 by rotation can be achieved by the movable arm 3 that carries the spool 1, and more specifically, by a motor device that engages between the movable arm 3 and the support shaft 2 of the spool 1. Optionally, the displacement of the spool 1 relative to the clamping mechanism 52 is achieved by the clamping mechanism 42 rotating about the spool 1 that is held in place.

[0038] According to a preferred structural example of the isolation device 4 at the first end 11 of the yarn—an example that can be combined with the foregoing examples—the suction mechanism 51 of the isolation device 5 at the second end 12 of the yarn includes a nozzle with an elongated arrangement of orifices along an axis substantially parallel to the support shaft and / or substantially parallel to the cylindrical core of the yarn spool 1. In addition to the nozzle, the suction mechanism 51 includes a preferably flexible tube, one end of which is connected to the nozzle. The other end of the tube is associated with a fan that generates the suction phenomenon. Since the free end 12 of the yarn on the spool 1 can be positioned at any point on the rotating surface of the spool 1, the suction nozzle is configured to generate airflow over the entire length of the rotating surface of the spool 1, which is arranged along an axis parallel to the support shaft 2 of the spool 1 or parallel to the axis of the spool 1. Therefore, the axial pivoting of the spool 1 relative to the suction nozzle allows reliable suction of the free portion of the yarn on the spool 1 at the loops of the yarn end 12 engaged between the turns of the spool 1. When the end of the yarn is drawn in by the suction mechanism 51, the yarn is thus stretched along a substantially straight axis between the rotating surface of the spool 1 on one side (more specifically, the point where the yarn loops between the turns on the surface of the spool 1 engage) and the point where the yarn enters the nozzle of the suction mechanism 51 on the other side. This particular arrangement of the nozzles allows for optimal airflow on the rotating surface of the spool 1 to ensure the effective suction of the free portion of the yarn, which will be isolated at the loops of the end 12 engaged between the turns of the spool 1. Furthermore, this arrangement helps to optimize the size of the system according to the invention by positioning the suction mechanism 51, particularly its nozzles, in a way that prevents it from interfering with the isolation device 4 and / or other components of the system according to the invention during its operation.

[0039] According to another preferred structural example of the isolation device 5 at the second end 12 of the yarn—an example that can be combined with the foregoing examples—the nozzle and / or tube of the suction mechanism 51 includes a detection mechanism for the yarn present in the suction mechanism 51. This detection mechanism, combined with a computer unit, allows confirmation that a yarn under tension exists between the rotating surface of the spindle 1 and the nozzle of the suction mechanism 51, enabling the clamping mechanism 52 to be actuated to clamp the yarn.

[0040] According to another preferred structural example of the isolation device 5 at the second end 12 of the yarn—an example that can be combined with the foregoing examples—the clamping mechanism 52 includes a pair of jaws, each jaw including an edge or surface with a shape complementary to the edge or surface of the corresponding jaw. For example, these jaws are made in the form of two substantially straight parts, such that each of them carries a flat surface at which a portion of the yarn being drawn can be clamped. The clamping surface is preferably covered with a gripping or anti-slip material to supplement the retention of the yarn held by the jaws. The material may also have a certain degree of elasticity to allow it to deform and adjust to the volume of the yarn being clamped. For example, such a gripping or anti-slip material is made of rubber. The jaws of the clamping mechanism 52 are associated with a motor device that allows the two jaws, which are abutting each other, to separate and approach. In the separated position, the two jaws are arranged to be positioned on either side of the airflow drawn by the nozzle of the suction mechanism 51. As a structural example, the two jaws are arranged along an axis substantially parallel to the support shaft 2 to ensure the clamping of the yarn, regardless of the orientation of the substantially straight axis of the yarn between the rotating surface of the spool 1 and the nozzle of the suction mechanism 51. In the separated position, the jaws are arranged, for example, on both sides of the nozzle orifice of the suction mechanism 51. In the proximal position, the two jaws are then positioned between the nozzle orifice of the suction mechanism 51 and the rotating surface of the spool 1. Preferably, the operation of the motor mechanism of the jaws is coordinated on the one hand with the operation of the suction mechanism 51, on the other hand with the operation of the movable arm 3, and more specifically with the axial pivoting of the support shaft 2 that carries and drives the spool 1. This coordination of the operation of the jaws with the position of their engagement point relative to the surface turns of the yarn loop on the spool 1 allows the release of the yarn loop held by the surface turns of the spool 1.

[0041] According to another structural example of the isolation device 5 at the second end 12 of the yarn, the suction mechanism 51 and the clamping mechanism 52 are respectively directly or indirectly mounted and / or fixed on the frame of at least one of the two isolation devices 4 and 5 at the ends 11 and 12 of the yarn carrying the bobbin 1.

[0042] According to another structural example of the isolation device 5 at the second end 12 of the yarn—an example that can be combined with one or more of the structural examples detailed above—the operation of the jaws of the clamping mechanism 52 and the operation of the fan of the suction mechanism 51 are controlled by a dedicated computer unit capable of integrating the operating software and / or programs of these two mechanisms 51, 52. The operation of these two mechanisms 51, 52 can also be associated with the displacement and position of the movable arm 3 carrying the yarn bobbin 1, more specifically with the pivoting of the bobbin 1 about the support shaft 2. Furthermore, according to a structural variation, the computer unit participates in the operation of the movable arm 3 and the pivoting of the support shaft 2 with respect to the positioning of the various components of the isolation device 5 at the second end 12 of the yarn. The jaws of the clamping mechanism 52 coordinate with the suction mechanism 51 such that, on the one hand, the suction airflow allows the free portion of the yarn at the loop of the end 12 of the yarn clamped between the turns of the bobbin 1 to separate from the rotating surface of the bobbin 1; on the other hand, this free portion can be clamped by the two jaws of the clamping mechanism 52. When a portion of the yarn is clamped by the jaws between the engagement point between the surface turns of the yarn on the spool 1 and the point where the yarn enters the nozzle, the movement of the jaws relative to the engagement point between the surface turns of the yarn loop on the spool 1 allows for traction on the yarn. This displacement of the jaws can be achieved by axial rotation of the spool 1 or by pivoting the clamping jaws about the spool 1. To ensure traction on the yarn on the spool 1, the movement of the jaws relative to the surface of the spool 1 occurs in the winding direction of the yarn on the spool 1. Thus, by pulling the loop out of the surface turns of the spool 1, this traction on the yarn allows for the release of a portion of the yarn corresponding to the loop clamped between the multiple turns of the spool 1. Depending on the travel length of the jaws' displacement relative to the spool 1 and / or depending on the tension value identified on the yarn clamped by the jaws, the jaws separate, and this portion of the yarn is released so that it can be drawn only by the suction mechanism 51. Thus, the cessation of the operation of the suction mechanism 51 allows for the release of the second end 12 of the yarn located on the outer peripheral surface or rotating surface of the spool 1.

[0043] According to an example of a structural variation of the system of the present invention—which may be combined with one or more of the variations detailed above—the isolation device 5 at the second end 12 of the yarn also includes a cutting tool 53. This cutting tool 53 is also preferably positioned between the suction mechanism 51 and the rotating surfaces of the bobbin 1. The cutting tool 53 includes at least one blade associated with a counterblade, which can also be formed from blades. The cutting tool 53 is associated with a motor mechanism that specifically allows movement of the blade relative to the counterblade. The cutting tool 53 may also be mounted at the end of a movable arm that allows movement between a separated position and a working position, the working position allowing cutting of the yarn at a portion of the yarn stretched between the suction mechanism 41 and the bobbin 1.

[0044] It should be noted that, according to a structural variation, the two suction mechanisms 51, 52 of the system of the present invention can use a common fan device, while including independent pipes and suction nozzles.

[0045] The present invention also relates to a method for implementing the system for preparing a spool 1 according to the present invention, characterized in that the method comprises:

[0046] - The step of positioning the end of the cylindrical core of the yarn bobbin 1 by means of the movable arm 3 supporting the support shaft 2, the end facing the isolation device 4 of the first end 11 of the yarn located at the cylindrical core of the bobbin 1.

[0047] - The step of isolating the first end 11 of the yarn located at the cylindrical core of the spool 1.

[0048] - The step of isolating the second end 12 of the yarn located on the outer peripheral surface or rotating surface of the bobbin 1.

[0049] - Steps to remove spool 1 from the system.

[0050] According to an example of a variant embodiment of the method of the present invention, the step of isolating the first end 11 of the yarn located at the cylindrical core of the spool 1 includes:

[0051] - The step of using the suction mechanism 41 of the isolation device 4 at the first end 12 of the yarn to draw at least one protruding yarn loop at one end of the cylindrical core of the bobbin 1.

[0052] - The step of clamping at least one yarn loop by the clamping mechanism 42 of the isolation device 4 at the first end 12 of the yarn.

[0053] - The step of separating the core of the bobbin 1 from the yarn clamping mechanism 42.

[0054] According to an example related to a variant embodiment of the method of the present invention—which can be combined with the variants detailed above—the method further includes:

[0055] - The step of releasing the at least one yarn loop by clamping mechanism 42

[0056] - The step of holding the suction protrusion of the yarn at the cylindrical core of the yarn shaft 1 by the suction mechanism 41.

[0057] - The step of bringing the core of the bobbin 1 closer to the yarn clamping mechanism 42 and / or the suction mechanism 41.

[0058] - The step of clamping the second part of the yarn closer to the core of spool 1.

[0059] - The step of separating the core of the bobbin 1 from the yarn clamping mechanism 42.

[0060] According to an example related to a variant embodiment of the method of the present invention—which can be combined with one or more of the variants detailed above—the method further includes:

[0061] - Identify the step of clamping a single strand of yarn by the clamping mechanism 42.

[0062] - The step of cutting a single strand of yarn identified by cutting tool 43 at a portion of the yarn between the end of the cylindrical core of the bobbin 1 on one side and the suction mechanism 41 and / or clamping mechanism 42 on the other side.

[0063] According to an example related to a variant embodiment of the method of the present invention—which can be combined with one or more of the variants detailed above—the step of isolating the second end 12 of the yarn located on the outer peripheral surface or rotating surface of the bobbin 1 includes:

[0064] - The step of positioning the suction mechanism 51 of the isolation device 5, which faces the outer peripheral surface of the bobbin 1 toward the second end 12 of the yarn, is as follows:

[0065] - The step of moving the spool 1 relative to the suction mechanism 51 is performed by pivoting about the support axis 2 of the spool 1.

[0066] - The step of drawing the second end of the knotted yarn at the outer peripheral surface of the yarn shaft 1.

[0067] - The step of clamping the sucked end of the yarn by the clamping mechanism 52 of the isolation device 5 at the second end 12 of the yarn.

[0068] - The step of moving the spool 1 relative to the clamping mechanism 52, which is performed by pivoting about the support axis 2 of the spool 1.

[0069] According to an example related to a variant embodiment of the method of the present invention—which can be combined with the variants detailed above—the method further includes the step of cutting a portion of the yarn stretched by suction and / or traction performed by the clamping mechanism 52 at a portion of the yarn located between a portion of the yarn wound on the outer peripheral surface of the coil 1 on one side and the second end 12 of the yarn on the other side at a portion of the yarn separated by a suction mechanism 51 and / or a clamping mechanism 52 of an isolation device 5.

[0070] Of course, the present invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications are still possible without departing from the scope of protection of the present invention, particularly from the perspective of the construction of various elements or by substitution with technical equivalents.

Claims

1. A system for preparing a yarn spool (1) for mounting on a winding machine, comprising: - A support shaft (2) for the cylindrical core of the yarn bobbin (1), the support shaft (2) being mounted on a movable arm (3) to adjust the position of the yarn bobbin (1) during the preparation of the yarn bobbin (1) within the system. - Isolation device (4) at the first end (11) of the yarn located at the cylindrical core of the bobbin (1). - Isolation device (5) at the second end (12) of the yarn located on the outer peripheral surface of the bobbin (1).

2. The system for preparing a yarn spool (1) according to claim 1, characterized in that, The isolation device (4) at the first end (11) of the yarn includes: - A suction mechanism (41) whose airflow is oriented along a central axis substantially parallel to or aligned with the support shaft (2), the support shaft being arranged to interact with the cylindrical core of the yarn beam (1). - A clamping mechanism (42) capable of clamping a portion of the yarn near the first end (11) of the yarn from the spool (1), the clamping mechanism (42) being located between the suction mechanism (41) and the end of the support shaft (2) of the yarn spool (1).

3. The system for preparing a yarn spool (1) according to claim 2, characterized in that, The isolation device (4) of the first end (11) of the yarn also includes an identification device for identifying the number of portions of yarn clamped by the clamping mechanism (42).

4. The system for preparing a yarn spool (1) according to claim 2 or 3, characterized in that, The isolation device (4) of the first end (11) of the yarn also includes a cutting tool (43).

5. The system for preparing a yarn spool (1) according to any one of the preceding claims, characterized in that, The isolation device (5) at the second end (12) of the yarn includes: - A suction mechanism (51) whose airflow is oriented substantially perpendicular to the central axis of the support shaft (2), which is arranged to interact with the cylindrical core of the yarn shaft (1). - A clamping mechanism (52) capable of clamping a portion of the yarn near the second end (12) of the yarn from the spool (1), the clamping mechanism (52) being located between the suction mechanism (51) and the support shaft (2) of the yarn spool (2).

6. The system for preparing a yarn spool (1) according to claim 5, characterized in that, The suction mechanism (51) of the isolation device (5) at the second end (12) of the yarn includes a nozzle with an elongated arrangement of orifices, which is arranged along an axis substantially parallel to the axis of the cylindrical core of the support shaft and / or the yarn shaft (1).

7. A method for implementing the system for preparing a yarn spool (1) according to any one of claims 1 to 6, characterized in that, The method includes: - The step of positioning the end of the cylindrical core of the yarn spool (1) facing the first end (11) of the yarn located at the cylindrical core of the yarn spool (1) by means of the movable arm (3) carrying the support shaft (2), - The step of isolating the yarn at the first end (11) located at the cylindrical core of the bobbin (1), - The step of isolating the second end (12) of the yarn located on the outer peripheral surface or rotating surface of the bobbin (1), - The step of removing the spool (1) from the system.

8. The implementation method according to claim 7, characterized in that, The step of the first end (11) of the isolation yarn located at the cylindrical core of the bobbin (1) includes: - The step of sucking at least one protruding yarn loop at one end of the cylindrical core of the bobbin (1) by the suction mechanism (41) of the isolation device (4) at the first end (12) of the yarn. - The step of clamping at least one yarn loop by the clamping mechanism (42) of the isolation device (4) at the first end (12) of the yarn. - The step of separating the core of the bobbin (1) from the yarn clamping mechanism (42).

9. The implementation method according to claim 8, characterized in that, The method further includes: - The step of releasing the at least one yarn loop by the clamping mechanism (42), - The step of holding the suction protrusion of the yarn at one end of the cylindrical core of the bobbin (1) by means of the suction mechanism (41) - The step of bringing the core of the bobbin (1) closer to the yarn clamping mechanism (42) and / or suction mechanism (41), - The step of clamping the second part of the yarn closer to the core of the spool (1), - The step of separating the core of the bobbin (1) from the yarn clamping mechanism (42).

10. The implementation method according to claim 7 or 8, characterized in that, The method further includes: - The step of identifying the single strand of yarn clamped by the clamping mechanism (42) - The step of cutting a single strand of yarn identified at a portion of the yarn located between the end of the cylindrical core of the bobbin (1) on one side and the suction mechanism (41) and / or clamping mechanism (42) on the other side by means of a cutting tool (43).

11. The method according to any one of claims 7 to 10, characterized in that, The step of isolating the second end (12) of the yarn located on the outer peripheral surface of the bobbin (1) includes: - The step of positioning the suction mechanism (51) of the isolation device (5) of the bobbin (1) facing the second end (12) of the yarn. - The step of moving the spool (1) relative to the suction mechanism (51) is performed by pivoting about the support axis (2) of the spool (1). - The step of drawing the second end of the knotted yarn at the outer peripheral surface of the spool (1) - The step of clamping the sucked end of the yarn by the clamping mechanism (52) of the isolation device (5) at the second end (12) of the yarn. - The step of moving the spool (1) relative to the clamping mechanism (52) is performed by pivoting about the support axis (2) of the spool (1).

12. The implementation method according to claim 11, characterized in that, The method further includes: - The step of cutting a portion of the yarn stretched by the suction and / or traction performed by the clamping mechanism (52) of the isolation device (5) between a portion of the yarn located on one side wound around the outer peripheral surface of the bobbin (1) and the second end (12) of the yarn on the other side.

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