Creel system

Abstract

The present invention relates to a bobbin cassette system, particularly for connecting continuous bobbins, wherein the yarns of different bobbins on the bobbin cassette are connected to each other and thus provided as a single long yarn for subsequent processes (tailing).

Description

Technical Field

[0001] The present invention relates to a bobbin cassette system, particularly for connecting yarn to another bobbin, wherein the yarns of different bobbins on the bobbin cassette are connected to each other so as to be provided as a long yarn for subsequent processes (tagending). Background Technology

[0002] In existing technology, spools of yarn are supplied for transfer to a bobbin rack, typically positioned vertically on a pallet or horizontally in a trolley during delivery. The bobbin rack is equipped with multiple brackets (usually elongated rods or clamping devices) on which the spools can slide to hold them. In some systems, a robotic arm is provided that picks up the spools and then positions them on the brackets of the bobbin rack. Alternatively, this (possibly in part, for example, via a collaborative robot) is performed manually.

[0003] However, there are numerous associated drawbacks. On the one hand, the implementation of robotics is often a major obstacle due to cost, especially since it is typically limited to simply moving spools without connecting continuous spools, and the scale must be large enough for it to be efficient. On the other hand, performing this manually is ergonomically disadvantageous for workers and still requires too much worker effort and time.

[0004] In other systems, a conveyor (conveyor belt or other) is still required between the delivery material and the bobbin rack itself. At the bobbin rack, the bobbins are typically slid onto an intermediate bracket (tapered extension) perpendicular to the conveyor for securing them during transport. However, it should be noted that yarn sagging often occurs due to gravity, especially if the knots holding the bobbins closed loosen, causing the yarn to roll off the bobbins and become almost uncontrollable. Furthermore, this does not change the problems encountered when placing the bobbins on the bobbin rack itself.

[0005] Finally, it is also very important to avoid touching the yarn or to minimize contact with the yarn when handling the spool, as this can cause sagging, as well as weakening, damage, and eventually even breakage.

[0006] The second drawback relates to the tail-end process itself, in which the yarns of the bobbins are joined together. For this, the yarn ends must be detected and secured so that they can be attached to the yarn ends of other bobbins. This process must occur either when or after the bobbins are positioned on the bobbin rack (but before the next process), which is not obvious because the presence of bobbins on / in the bobbin rack complicates the action. Another drawback is that tail-end detection is not always certain and can be time-consuming. This time uncertainty is undesirable in regions with stringent timing requirements.

[0007] The term "front end" or "starting end" refers to the freest end of a bobbin of yarn from which the yarn can be completely unwound from the bobbin.

[0008] The term "tail end" or "end" refers to the other end of a bobbin of yarn that is released during unwinding of the bobbin, and from this other end, the yarn typically cannot be completely unwound from the bobbin.

[0009] Existing systems are described in DE4442231A1, EP0534633A1 and DE10059993A1, but no reliable, compact and easy-to-install systems are described. Summary of the Invention

[0010] This invention relates to a system for holding and connecting yarn bobbins to produce long, thin yarn (with a tail), the system comprising:

[0011] a. A plurality of means for conveying and positioning bobbins containing yarn for provision in a bobbin rack, said means as described herein, said means preferably forming components as described herein;

[0012] b. A receiver system comprising multiple receiving positions, each receiving position being adapted to receive one of the devices, the receiving positions being divided into multiple pairs of receiving positions;

[0013] The device includes one or more engaging elements, and the receiving position includes one or more engaging mechanisms for connecting to the engaging elements, wherein the engaging mechanisms of each pair of receiving positions are positioned such that:

[0014] - The holder of the device received in the pair of receiving positions is oriented toward a common run-off point; and

[0015] - The junction between the first fixing member of the first device and the second fixing member of the second device; and

[0016] - The second fixing member of the first device intersects with the first fixing member of the second device; and

[0017] The minimum mutual distance between the intersecting fixed components is at most 250 mm, preferably at most 100 mm, more preferably at most 50 mm, and most preferably at most 25 mm.

[0018] This invention includes a device for holding a bobbin with yarn for delivery in a bobbin holder. The device is adapted to be easily placed in the bobbin holder, preferably without additional elements, and thus (seemingly) immediately and correctly position the bobbin for continuous unwinding in the next process, while securing the yarn ends (front and rear ends) for easy connection of the rear end of the yarn on the first bobbin to the front end of the yarn on the adjacent positioned second bobbin. Once the first bobbin has been fully unwound, the device with that bobbin can be removed and replaced with a new “full” device, which again connects its front end to the rear end of the previous second bobbin. Furthermore, the device is also adapted for simple transport to the bobbin holder, where the bobbin can be kept substantially horizontal. Two “connecting” devices arranged side-by-side in the bobbin holder and intended to be connected at the yarn ends for continuity of yarn unwinding will be referred to herein as “assemblies.”

[0019] The first advantage is that the device according to the invention ensures that when the two devices of the “component” are placed in the bobbin holder, they are correctly oriented and the axis of the bobbin is guided toward a common turnout point toward which the yarn of the bobbin is unwound.

[0020] If the axis of the bobbin is positioned perpendicular to the “base” of the device, this has the following disadvantages: more complex movements of the positioning robot are expected, and the bobbin holder becomes larger and / or more expensive, since it is always expected that the axis of the bobbin will point to a common exit point once it is in the bobbin holder.

[0021] The second advantage is that the device provides a non-vertical support for the spool, thus reducing or even completely eliminating the risk of the yarn slipping or rolling off the spool.

[0022] The third important advantage is that the device includes specially adapted mechanisms for holding the yarn ends in a specific manner, positioning them relatively closely, and, where possible, correctly aligning them with the corresponding yarn ends on adjacent devices, thus making connection very easy. Until now, yarn end placement has been performed once the spool is placed in the bobbin holder, and in practice this has proven difficult to do online. By incorporating fixing components on the device itself, the yarn ends can be pre-positioned for placing the spool in the bobbin holder, eliminating time uncertainties.

[0023] By working with a fixing member having a known positioning (distance and / or orientation) relative to the bracket, a connection mechanism with a bobbin holder can also be provided, whereby the bracket and yarn end terminate in the desired position when the device is placed in the bobbin holder.

[0024] To position the device in space at a specific location and orientation, a preferred embodiment exists in which the device includes at least three non-collinear support points, which are preferably rigidly connected to each other (e.g., on a common component or on components rigidly connected to each other), and the support points define a substantially flat support surface, via which the spool bracket is connected. This embodiment allows the device to be transported by conveyor belt or other (flat) transport mechanism.

[0025] Providing three support points, or even support surfaces, allows the six degrees of freedom of the device to be secured when positioned within a cylinder, for example, by engaging with the cylinder. In this way, it can be ensured that the axis (extension) of the bracket points to the desired exit point. It will be apparent to those skilled in the art that positioning and securing can be achieved in various ways, such as by clamping a ball joint or clamping other components. Securement can be achieved by locking and / or clamping one or more components on which the support points are located.

[0026] The term "supporting surface" can refer to a "solid" surface or a substantially hollow frame. Both can be used to secure the device within the frame via coupling devices and a truss.

[0027] In a preferred embodiment, at least one, preferably two, of the fixing members include at least two retainers for holding the yarn end, each retainer defining a tension line along which the yarn end is tensioned at the fixing member. In other embodiments, one or both yarn ends are held by a retainer on the fixing member and the bobbin itself where the yarn resides, thus the retainer and the bobbin define a tension line. Therefore, it should be understood that in some embodiments, one fixing member may use a first type (two retainers) while another fixing member may use a different type (one retainer). For example, a first mechanism may be used to hold the end point, wherein the position at which the end point is released from the bobbin cannot always be predicted.

[0028] Furthermore, it should be noted that retainers do not necessarily effectively clamp the yarn end (or, in the case of two retainers, they do not clamp the yarn end simultaneously). For example, the first retainer may act as a guide (e.g., a hook over which the yarn travels), while the second retainer secures the yarn end. This securing is usually done in such a way that the yarn end itself cannot loosen, but this requires external force (unwinding).

[0029] The term "junction" in relation to the fixing members refers to the state of the fixing members when the devices are correctly positioned in the bobbin holder (i.e., side-by-side, with the brackets facing a predetermined turnout or unwinding point), and specifically, the yarn ends are held within said fixing members, wherein the fixing members of the two devices are close enough to allow the yarn end of the bobbin on one device to be connected to the yarn end of the bobbin on the other device, as intended by the tail. In practice, there may be some tolerances, but the distance between the two yarn ends to be connected should be kept limited, depending on the connection system implemented in this invention. The minimum distance between the fixing members at the junction should not exceed 250 mm.

[0030] In a preferred embodiment, one of the fixing members is positioned closer to the first end of the bracket than the other of the fixing members. Preferably, one of the fixing members is used to secure the end of the yarn. Typically, the free length of the end is limited because the end is trapped by, or may be trapped by, the remaining portion of the yarn wound on the sleeve.

[0031] In a preferred embodiment, the bracket is provided with a spool fixing element, system, or mechanism for retaining the spool on the bracket and preventing the retained spool from moving along the length of the bracket. Preferably, the spool fixing element includes a passive clamping system.

[0032] In a preferred embodiment, the bracket is provided with a rotating spool retaining element for retaining the spool on the bracket and preventing the retained spool from rotating about substantially along the axis of the bracket. Preferably, the rotating spool retaining element includes a passive clamping system. Preferably, the rotating spool retaining element is the spool retaining element.

[0033] In alternative embodiments, the (conventional and / or rotary) spool retaining element is an active clamping system. The clamping system can be, for example, a monostable element that is intended to return to a preferred position / shape to clamp the spool (e.g., a system with a spring load). Alternatively, a bistable element can be provided, having an open (non-clamping) position and a closed (clamping) position, thereby allowing easy positioning and effective clamping of the spool. In this way, the spool retaining element can also allow clamping of a wide variety of spools (in terms of both length and diameter). It can also accommodate variations in spool size in this manner.

[0034] In possible embodiments, the device is equipped with an identifier (whether unique or not), such as a barcode, QR code, RFID tag, LCD screen, LED, serial number, or other readable identifier. Note that this can also be used in any embodiment of the invention for traceability of any device and spool. Other systems can also be used for this purpose, such as cameras, timers, and FIFO monitoring systems.

[0035] In the following text, the term "intersecting device" will be used to refer to a device in which the fixing members are intersected as previously described, i.e., wherein the first fixing member of the first device intersectes with the second fixing member of the second device, and the first fixing member of the second device intersectes with the second fixing member of the first device.

[0036] A feature of the invention is that the devices can be used together in a bobbin holder, such that they complement each other when correctly positioned. Correct positioning depends in part on the receiving mechanism of the bobbin holder and the couplings of the devices, but the devices themselves are adapted such that when the fixing members intersect (crosswise, the first fixing member of the first device intersects with the second device of another device, and the second fixing member of the first device intersects with the first device of another device), the bracket is automatically guided to a common turning point. Its advantages are clear when observing the position within the bobbin holder. There, bobbins are placed in pairs or clusters, whereby the first bobbin unwinds while its tail end connects to the front end of the next bobbin. As noted, locating the yarn ends and connecting them between devices is not always obvious. The proposed assembly not only allows for the pre-locating and holding of the yarn ends but also allows for their automatic positioning relative to another device during placement in the bobbin holder, so that they can be connected.

[0037] In a preferred embodiment, the retaining member (or at least where it holds the yarn end) is substantially located in a plane perpendicular to the bisector formed by the two brackets, where the brackets face the same turning point and the retaining member is at the junction as discussed earlier. Alternatively, the retaining members of both devices may be equidistant from the plane defined by the two brackets, where the brackets point to the same turning point and the retaining member is at the junction as discussed earlier, and the retaining member is in a plane perpendicular to the bisector of the two brackets. Figures 4A to 4D The embodiment based on this variant can also be seen in the text.

[0038] In a preferred embodiment, in at least one mutually positioned device (where the brackets of the first and second devices point with their free ends toward a common turning point), the common turning point is at most 2.0m away from the free end of the device, preferably at most 1.5m, and more preferably at most 1.0m. Preferably, the removal distance is at least 5.0cm, more preferably at least 10.0cm, and even more preferably at least 20.0cm.

[0039] It goes without saying that when discussing the distance between the fixed components at the junction, it is preferable to keep the distance as low as possible so that the yarn end connection can be made as reliably as possible while minimizing the operation on the yarn ends. For example, the distance can be at most 200mm, 150mm, 75mm, 40mm, or between these distances, but it can also be smaller, such as 24mm, 20mm, 15mm, 10mm, 5mm, or even smaller.

[0040] Here, the present invention allows the device to be placed in a bobbin holder by a specific configuration, in a position and orientation that automatically ensures that adjacent devices can be connected to the yarn ends (where the fixing members of the devices intersect each other at an appropriate distance). Preferably, the engaging elements and engaging mechanisms are adapted to allow the devices to be placed in a receiving position in only one way (that which can be uniquely connected, preferably in a fixed mutual orientation), thereby automatically entering the desired orientation with the bracket and fixing members. Especially in devices where the bracket and fixing members have a fixed mutual orientation, this ensures the possibility of immediate trial operation with minimal requirements for the user.

[0041] For example, the engaging elements and mechanisms can descend into a (partially) hollow bracket that slides on a corresponding protrusion that is part of a receiving position, and the bracket is secured to the protrusion, for example, by rotation (or by another mechanism). By choosing the shape, it can be ensured that there is only one way to connect them, thereby fixing the orientation.

[0042] In possible embodiments, the device has multiple support points or even support surfaces / plates, as previously discussed. Support points / support surfaces / plates are used to implement the connection between the gantry system and the device and to engage with the support points / support surfaces / plates. This can be achieved, in particular, by receiving support plates with a C-shaped profile, thereby again ensuring correct orientation. These embodiments can be seen, in particular, in Figures 1 through 5.

[0043] In a preferred embodiment, the engagement mechanism is adapted to releasably secure or position the device, wherein securing or positioning the device in the engagement mechanism prevents rotation and translation of the device relative to the receiving position. This can be achieved through passive and / or active securing, such as through interlocking connectors (snap-fit, etc.) on the engagement mechanism and / or engagement elements.

[0044] In a preferred embodiment, the bobbin system includes one or more connecting devices for attaching yarn ends to the fixing members at the junction. Preferably, the connecting devices are movable, whether or not automated, as this allows for greater freedom of movement to position the devices in a receiving position. Preferably, the connecting device is or includes a splicing device for splicing the yarn ends. Alternatively, the connecting device is a knotting device for knotting the yarn ends, a gluing device for securing the yarn ends together, or a welding device for joining the yarn ends.

[0045] In a preferred embodiment, it is desirable to connect the tail end of a bobbin (which is being unwound) on one device to the front end of a bobbin on another device in a pair of devices in a bobbin holder. For this reason, it is preferable to connect the crossed yarn ends when connected by, for example, splicing or other techniques. On one hand, a retaining member is configured to hold the yarn end in a position (e.g., with a clamp) such that the loose yarn end extends beyond the retaining member. The system includes a connecting device, preferably a splicing device, and at least one feeding device. The feeding device is configured to draw the loose yarn end of the bobbin tail end to one device using a first suction device, and to draw the front end of the bobbin to another device using a second suction device. These suction devices may include, for example, a Venturi nozzle. As a result, the loose yarn ends are slightly fixed in one position (in a retainer), and they still have some degrees of freedom of movement at their loose ends, moving in and out of the suction devices with minimal tension. Once drawn in, the feeding device translates in a specific direction and / or rotates or pivots about an axis intersecting the connecting line between the yarn end and the fixing member, such that the now-drawn yarn end (which remains between the drawing device and the fixing member) intersects between the drawing device and the fixing member. Knowing the distance between the drawing device and the fixing member and their relative positions after translation or rotation, the location where the drawn yarn ends will intersect can be known in advance, and a connecting device (e.g., a splicing device, in the form of a splicing chamber) can be provided at that location so that the two intersecting drawn yarn ends can be connected by air pulses. Of course, further movement (e.g., translation or rotation) can be made on the splicing device and / or on other elements (preferably on the splicing device) to ensure that the intersecting drawn yarn ends are positioned as desired.

[0046] Alternatively, the same result can be achieved using other connection techniques, thereby also utilizing the aforementioned techniques to supply and cross-supply loose yarn ends.

[0047] Note that in one variant, only one of the two suction devices can translate / rotate / pivot to achieve the same effect, namely the crossed yarn ends. Attached Figure Description

[0048] Figures 1A to 1CA schematic diagram of a first variant of a possible embodiment of the device is shown, along with components of the two devices placed in a cylinder rack. Figure 1A A rear view during transport is shown. Figure 1B The rear view of two devices in the tube rack is shown, and Figure 1C A top view of the tube rack is shown, as well as its movement during placement.

[0049] Figures 2A to 2C A schematic diagram of a second variation of a possible embodiment of the device is shown, with components of both devices placed in a cylinder rack. Figure 2A A rear view during transport is shown. Figure 2B The rear view of two devices in the tube rack is shown, and Figure 2C A top view of the tube rack is shown, as well as its movement during placement.

[0050] Figure 3 A schematic diagram of a third variation of a possible embodiment of the device is shown, with components of the two devices placed in a cylinder rack.

[0051] Figures 4A to 4D A diagram showing two possible embodiments of the devices is provided.

[0052] Figures 5A to 5C A schematic diagram of a first variant of an alternative embodiment of the device is shown, with components of both devices placed in a cylinder rack. Figure 5A A rear view during transport is shown. Figure 5B A rear view of two devices in the tube rack is shown, and Figure 5C A top view of the tube rack is shown, as well as its movement during placement. Detailed Implementation

[0053] Unless otherwise defined, all terms (including technical and scientific terms) used in this specification have the meanings commonly understood by one of ordinary skill in the art to which this invention pertains. For a better understanding of this specification, the following terms are explicitly explained.

[0054] The range of numbers referenced by endpoints includes all integers, fractions, and / or real numbers between the endpoints.

[0055] In a preferred embodiment of the device, the bracket extends at least 100 mm, preferably at least 200 mm, and more preferably at least 300 mm or 400 mm relative to the support element.

[0056] In a preferred embodiment of the device, the device is provided with at least one screen that is substantially parallel to the bracket, the screen being positioned spaced apart from the bracket to prevent the descending yarn from bulging.

[0057] The screen is used to prevent the yarn from bulging during unwinding. Bulging can occur if the yarn experiences a certain amount of slack and / or periodic changes in tension during unwinding. If this is the case, the yarn may swing wider and wider during unwinding, which should be limited as this can lead to breakage. Bulging is limited by providing the screen at an appropriate distance. The screen can be located on one side, or on several sides, but it can also be configured to bend around a portion of the bracket (e.g., on a section between 20° and 180°).

[0058] In a preferred embodiment of a second variation of the second aspect of the invention, the support surface of the device that has been rotated 180° is held in the cylinder frame, from which the device is suspended.

[0059] In a preferred embodiment of a third variation of the second aspect of the invention, the support surface of the device is held in the cylinder frame, thus keeping the device suspended.

[0060] Example

[0061] In the following text, the angle α between the brackets of the two “paired” devices (i.e., devices with interface fixing members) in the bobbin holder will be referred to. This angle can vary depending on the bobbin holder, yarn type, and specific parameters or preferred settings. Therefore, it should be understood that all variations of this angle are still within the scope of the invention. Preferably, the angle α is about 60-70°, but it can also be between 40° and 60° (or lower) or between 70° and 90° (or higher).

[0062] Example 1:

[0063] The first instance (first aspect) in Figures 1A to 1C In the first embodiment that is visible, a basic embodiment of the present invention is described. Figure 1A The rear view of the device during transport is shown, in which the bracket is parallel to the side of the support plate and needs to be placed at an angle in the cylinder frame (see...). Figure 1B and Figure 1C Here, in fact, two different types of devices (1) are used, which are essentially mirror images of each other, left and right versions. The devices here include a support plate (2) comprising at least three non-collinear support points. Parallel to the support plate, an elongated bracket (3) is provided to hold the bobbin (6), which is connected to the support surface at one end of the bracket via a vertical support element. The device (1) is also provided with two fixing members (5) (whether or not integrated into a single element), each fixing member having one or two retainers for holding the yarn ends of the bobbin (6). The support plate is preferably rectangular or square.

[0064] In this first example, multiple variations are possible, which depend on the tube rack itself and also affect the method of placing the device on the tube rack.

[0065] In the first embodiment, the tube holder has paired receiving positions at an angle to each other, the angle being substantially equal to α. In this variation, the support surface is approximately rectangular or square (possibly defined by two rods representing the sides of the rectangle, and these two rods are connected to each other), and the bracket extends parallel to a set of sides (sides) (8) of the rectangle. The receiving positions (10a, 10b) are adapted for receiving devices and thus engage the support surface, for example, via two U-shaped or C-shaped receivers (9) surrounding the lateral sides of the support surface.

[0066] By providing these devices at an angle of α to each other, and by sliding them into the receiving position in such a way as to ensure that the bracket is positioned at this angle.

[0067] Its in Figures 2A to 2C In the second embodiment, as seen in the diagram, the support surfaces are provided at the same angle in the receiving positions (10a, 10b), but the devices are adjusted such that the left and right devices have brackets at an angle of α / 2 or -α / 2 relative to the sides of the device, which thus return to the desired angle during assembly. This provides the advantage that the tube holder can be manufactured more compactly, although the devices typically occupy slightly more space. Figure 2A A rear view of the device in transit is shown, in which the bracket is angled to the side of the support plate, thereby allowing the two devices (with respect to the side of the support surface) to be placed parallel to each other in the tube frame (see [link]). Figure 2B and Figure 2C ).

[0068] exist Figure 1C , Figure 2C and Figure 3 In the top view, one can see the action of placing the device in the cylinder frame. Figure 3 Rotation also occurs to properly orient the spool. It should also be noted that in this view, the fixing members of the individual devices are positioned one above the other, although this is by no means mandatory, as can also be achieved in other ways. Figures 4A to 4D What I saw in the video.

[0069] Example 2:

[0070] exist Figures 4A to 4DIn the fourth example visible in the diagram, the device (1) has a support surface defined by the sides of two upright plates (4a, 4b), which together with another connector (4c) between the two plates serve as part of a support element. A bracket (3) extends from this other connector (4c), generally parallel to the support surface, and at an angle between 30° and 60° relative to the two plates. A fixing member (5) extends asymmetrically from one of the plates, wherein the first fixing member is closer to the point from which the bracket emerges from the rest of the device. Typically, the end of the yarn (tail end) will be attached there, as this end is usually limited in length.

[0071] In this embodiment, the fixing member, though by no means limiting, has two retainers (7) to hold the yarn ends at two points and retain the yarn ends so that they are connected to the yarn ends of another spool, so that the tail end of one spool is connected to the front end of another spool, and vice versa.

[0072] As can be seen in these figures, the two devices (1) are rotationally equivalent by rotating 180° around the bisector formed by the axes of the two brackets (which passes through a common offset point). The two fixing members are positioned such that they are connected to the fixing members of the second device due to their positional differences relative to the brackets. However, the brackets can be rotated relative to the device itself to ensure the desired angle (in a horizontal plane perpendicular to the two uprights).

[0073] In this embodiment, the device can be secured in the tube frame in several ways, such as resting on both sides of an upright plate entirely based on gravity and friction. Alternatively or additionally, one or two upright plates may also be used to secure the device.

[0074] Figures 4A to 4D The embodiments allow the device to be loaded into the bobbin rack immediately at the desired angle using a bracket, and also allow the bracket to be transported horizontally and thus hold the bobbin on the bracket.

[0075] These examples should be understood that the connection mechanism between the support surface or support plate discussed in this article and the U-shaped or C-shaped receiver should not be considered restrictive in any way, and can simply be replaced by other connection mechanisms, such as a rod that slides one into another, an eye hook connection, etc.

[0076] Example 3:

[0077] In the fifth example, according to Figures 5A to 5CAnother variation can be seen in which the connection between the receiving position and the device occurs directly on the bracket (3), and the bracket (3) is received on a coupling mechanism (11) in the form of an elongated element that can (partially) slide into the bracket (3). Preferably, the profiles of the bracket (3) and the coupling mechanism (11) are similar, and this allows them to be uniquely connected, and therefore there is no rotational degree of freedom for this connection. In this way, it is ensured that these fixing members (5a, 5b) are immediately and correctly oriented, as in Figure 5C What I saw in the video.

Claims

1. A system for holding and connecting yarn to a bobbin to produce long, thin yarns, the system comprising: a. A plurality of devices (1) for transporting and positioning bobbins (6) with yarn for provision in a bobbin holder, each device comprising: an elongated bobbin holder (3) for holding the bobbin with yarn, the bobbin holder extending from a first end of the bobbin holder from a support member and having a second free end, and each device comprising two fixing members (5, 5a, 5b) for holding the free yarn end of the yarn on the bobbin: a first fixing member for holding the front end of the yarn; a second fixing member for holding the tail end of the yarn; b. A bobbin holder system comprising a plurality of receiving positions (10a, 10b), each receiving position adapted to receive one of the devices, the receiving positions being divided into multiple pairs of two receiving positions; The device includes one or more engagement elements, and the receiving position includes one or more engagement mechanisms (11) for connecting to the engagement elements, wherein each pair of engagement mechanisms at the receiving position is positioned such that: - The spool holder of the device received in the pair of receiving positions is oriented toward a common turnout point; and -The junction between the first fixing member of the first device and the second fixing member of the second device; and -The second fixing member of the first device intersects with the first fixing member of the second device; and Among them, the minimum mutual distance between the fixed components at the intersection is a maximum of 250mm.

2. The system of the preceding claim 1, wherein, Each unit includes only one spool holder.

3. The system of the preceding claim 1, wherein, The first fixing member and the second fixing member are fixedly positioned relative to the spool bracket.

4. The system of the preceding claim 1, wherein, The minimum mutual distance is at most 100mm.

5. The system according to claim 1, wherein, The minimum mutual distance is a maximum of 50mm.

6. The system according to claim 1, wherein, The minimum mutual distance is a maximum of 25mm.

7. The system according to claim 1, wherein, The device includes at least three non-collinear support points, the support points defining a substantially flat support surface, and wherein the spool bracket is connected to the support points via the support member.

8. The system according to any one of claims 1 to 7, wherein, Two of the first and second fixing members include at least two retainers (7) for holding the yarn ends, each retainer defining a tension line along which the yarn ends are tensioned at the fixing member.

9. The system according to claim 7, wherein, The spool bracket can rotate relative to the supporting surface.

10. The system according to claim 9, wherein, The spool bracket is rotatable in a plane parallel to the support surface and / or about an axis parallel to the support surface.

11. The system according to any one of claims 1 to 7, wherein, One of the first fixing member and the second fixing member is positioned closer to the first end of the spool bracket than the other of the first fixing member and the second fixing member.

12. The system according to claim 11, wherein, The first and second fixing members, positioned close to the ground, are used to fix the tail end of the yarn.

13. The system according to any one of claims 1 to 7, wherein, The spool bracket is provided with a spool fixing element, which is used to retain the spool on the spool bracket and prevent the retained spool from moving along the length of the spool bracket.

14. The system according to claim 13, wherein, The bobbin fixing element includes a passive clamping system.

15. The system according to claim 13, wherein, The spool holder is provided with a rotating spool fixing element for retaining the spool on the spool holder and preventing the retained spool from rotating about substantially along the axis of the spool holder.

16. The system according to claim 15, wherein, The rotating spool fixing element includes a passive clamping system.

17. The system according to claim 15, wherein, The rotating spool fixing element is the spool fixing element.

18. The system according to any one of claims 1 to 7, wherein, The joining mechanism and the joining element can be uniquely connected with fixed relative positions and orientations.

19. The system according to any one of claims 1 to 7, wherein, The engagement mechanism is adapted to position the device in a releasable manner, wherein positioning the device in the engagement mechanism prevents the device from rotating and translating relative to the receiving position.

20. The system according to claim 7, wherein, The engagement mechanism is adapted to engage one or more of the support points.

21. The system according to claim 20, wherein, The device includes a support plate (2) having the support point, and wherein the engagement mechanism is adapted to engage the support plate.

22. The system according to any one of claims 1 to 7, wherein, The bobbin system also includes one or more connection devices for connecting yarns to the junction of the fixing members.

23. The system according to claim 22, wherein, The connecting device is movable.

24. The system according to claim 22, wherein, The connecting device includes a splicing device.

25. The system according to claim 22, wherein, A feeding device is provided at the connecting device, the feeding device comprising two engaging members for engaging the loose end of the yarn end in a fixed member of each of the two devices, the first engaging member of the engaging members being positioned to engage the free end of the tail end of the first device in the device, and the second engaging member of the engaging members being positioned to engage the loose end of the front end of the second device in the device. and The feeding device is configured to reposition the joining members relative to each other, thereby substantially cross-positioning the loose ends of the yarn ends.

26. The system according to claim 25, wherein, The joining component is a suction device used to suction the loose end of the yarn in one of the fixing components of each of the two devices.

27. The system according to claim 25, wherein, By further translation and / or rotation, a loose end for cross-joining of the yarn ends is provided in the connecting device.

28. The system of claim 23, wherein the connecting device comprises adhesive members, bonding members, and / or fusion members.

29. The system according to any one of claims 1 to 7, wherein, When two devices are provided in the pair of receiving positions, the spool brackets of the two devices are thus substantially mirror images of each other with respect to a plane perpendicular to the plane defined by the spool brackets of the first device and the second device, wherein the bisectors of the spool brackets of the first device and the second device lie in said plane.

30. The system according to any one of claims 1 to 7, wherein, When two devices are provided in the pair of receiving positions, the spool bracket and fixing member of the first device and the spool bracket and fixing member of the second device are rotational counterparts of each other, wherein there is a 180° rotation about the bisector between the two spool brackets.

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