Thread changer, wrapping device and segmented wrapping thread device

Abstract

The application discloses a yarn changer, a wrapping device and a sectional wrapping yarn device. The yarn changer comprises a yarn spindle base body, a channel is formed at the axis position of the yarn spindle base body, the rear end of a supporting tube is inserted into the channel, a first yarn guide is fixed at the front part of the supporting tube and used for adsorbing the end of the wrapped yarn outside the yarn spindle base body, a yarn cutter is installed at the front end of the supporting tube, and a ratchet motor is installed at the rear end of the yarn spindle base body. One end of a traction rope is connected with the output shaft of the ratchet motor, the other end of the traction rope passes through the channel and the supporting tube and is connected with the yarn cutter, so that the yarn is cut; and the block-shaped protrusion is used as a track to make the supporting tube slide along the length direction of the channel. The wrapping device comprises the yarn changer, the wrapping device is simple to operate, can automatically complete the yarn changing process, realizes automatic production, greatly improves the production efficiency, and can realize the sectional spiral wrapping of a variety of functional yarns on the surface of a base yarn.

Description

Technical Field

[0001] This invention belongs to the field of yarn preparation and winding technology, specifically relating to a yarn changer, a winding device, and a segmented winding yarn device. Background Technology

[0002] Against the backdrop of continuous advancements in modern technology and research into smart textiles, consumers' increasing demands for clothing quality have led to a diversification of needs for various functional yarns. Within this framework, the application of wrapped yarns has received sustained attention. Wrapped yarns utilize one or more yarns as the base yarn, with another yarn tightly wrapped around it in a spiral pattern to form a wrapped yarn structure. This yarn structure enhances the yarn's abrasion resistance and tensile strength, exhibiting excellent functional versatility. Such yarns have found wide application in fields including, but not limited to, sportswear and medical textiles, expanding the prospects for textiles in meeting specific performance requirements.

[0003] Currently, a winding device has been developed that can produce wrapped yarns by spirally wrapping a single type of yarn around the surface of a base yarn. However, when preparing wrapped yarns by wrapping multiple functional yarns around the surface of a base yarn, it is necessary to manually change the yarns. This process is cumbersome, has low production efficiency, and cannot meet the requirements for continuous production. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide a yarn changer.

[0005] Another object of the present invention is to provide a wrapping device that can realize segmented wrapping of various functional yarns during the production process, thereby constructing a wrapped yarn in which different functional yarns are segmented and wrapped on a base yarn.

[0006] The objective of this invention is achieved through the following technical solution.

[0007] A yarn changer includes: a yarn cutter, a first yarn feeder, a support tube, a first compression spring, a traction rope, a yarn spool base, and a motor. The yarn spool base is used to wrap yarn around it. A channel is formed at the axial position of the yarn spool base. The rear end of the support tube extends into the channel and is located in the channel. The front end of the support tube is located outside the channel. The first yarn feeder is fixed to the front part of the support tube and is used to attract the end of the yarn wrapped outside the yarn spool base. The yarn cutter is installed at the front end of the support tube, and the motor is installed at the rear end of the yarn spool base.

[0008] The yarn shearer includes: two blades and a second compression spring. The two blades are hinged together and the blades are arranged opposite each other. Each end of the second compression spring is connected to one blade. The second compression spring applies a pushing force to the two blades so that the blades of the two blades open and separate.

[0009] One end of the traction rope is connected to the output shaft of the motor, and the other end of the traction rope passes through the channel and support tube and is connected to the yarn cutter. The end of the traction rope away from the motor is divided into two connecting ropes, each of which is connected to a blade. When the motor rotates, it causes the length of the traction rope to shorten, and the two blades close and their blades come into contact, thus cutting the yarn.

[0010] The support tube has a strip-shaped opening along its length, and a block-shaped protrusion is formed inside the channel. The block-shaped protrusion is located inside the strip-shaped opening and serves as a track to allow the support tube to slide along the length of the channel.

[0011] A limiting protrusion is fixed inside the support tube in front of the block protrusion, and the first compression spring is limited to the channel between the block protrusion and the limiting protrusion.

[0012] Preferably, the support tube includes: a first tube body and a second tube body, the first tube body and the second tube body are connected, the included angle between the axes of the first tube body and the second tube body is 120°, the rear end of the first tube body extends into the channel and is located in the channel, and the second tube body is always located outside the channel.

[0013] Preferably, a circular plate is fixed inside the support tube, and a first through hole for the traction rope to pass through is formed at the center of the circular plate. The circular plate is located at the connection between the first section of the tube and the second section of the tube.

[0014] Preferably, the limiting protrusion is an arc shape, and a second through hole for the traction rope to pass through is formed at the position of the limiting protrusion opposite to the axis of the first tube.

[0015] Preferably, the outer contour of the front part of the yarn spool base is a frustum shape that gradually narrows from back to front.

[0016] Preferably, the two blades are hinged at the hinge point, the second compression spring is connected to the blade at the rear of the hinge point, and the blade edge is located in front of the hinge point.

[0017] Preferably, the first yarn feeder is a vacuum generator.

[0018] A wrapping device includes: a yarn changer, a second yarn guide, and a turntable. The turntable has a first yarn-passing hole at its center for passing a base yarn. The turntable is mounted on a support frame and can rotate about the base yarn as its axis. There are N yarn changers arranged circumferentially around the first yarn-passing hole. All N yarn changers are fixed to the turntable, and the yarn cutters of the N yarn changers are located on the same side of the turntable. The front part of the yarn spool base of each yarn changer is wrapped with yarn, and the yarn wrapped around the yarn spool base serves as the outer wrapping yarn. The yarn wrapped around the yarn spool bases of the N yarn changers is different. The second yarn guide is located on one side of the turntable, close to the first yarn guide, and does not contact any of the yarn changers.

[0019] A segmented yarn wrapping device includes: a yarn feeding device, a wrapping device, and a winding device arranged sequentially from front to back.

[0020] In the above technical solution, the yarn feeding device includes: a first tensioner, a first winding roller and a second yarn threading hole arranged sequentially from front to back; the winding device includes: a second tensioner, a yarn guide and a second winding roller arranged sequentially from front to back; the second winding roller is used to wind the segmented wrapped yarn; the yarn guide is used to evenly wind the wrapped segmented wrapped yarn onto the second winding roller; and the second winding roller is electrically connected to a motor.

[0021] The wrapping device of this invention is simple to operate and can automatically complete the yarn changing process, achieving automated production and significantly improving production efficiency. It can spirally and segmentally wrap various functional yarns around the surface of the base yarn to prepare wrapped yarns. This wrapping device integrates different functional yarns, meeting the needs for preparing functional yarns with multiple properties. Attached Figure Description

[0022] Figure 1 This is a schematic diagram (sectional view) of the yarn changer.

[0023] Figure 2 This is a schematic diagram of the yarn changer (with the yarn cutter open).

[0024] Figure 3 This is a schematic diagram of the yarn changer (with the yarn cutter closed).

[0025] Figure 4 This is a three-dimensional structural diagram of the first section of the tube;

[0026] Figure 5 This is a schematic diagram of the wrapping device.

[0027] Figure 6 This is a schematic diagram of a segmented yarn wrapping device.

[0028] Figure 7 This is a schematic diagram of segmented wrapped yarn.

[0029] Among them, 1: yarn changer, 1-1: yarn cutter, 1-1-1: blade, 1-1-2: second compression spring, 1-1-3: hinge, 1-2: first yarn guide, 1-3: support tube, 1-3-1: first tube section, 1-3-2: second tube section, 1-3-3: strip opening, 1-4: first compression spring, 1-5: traction rope, 1-6: yarn spool base, 1-7: motor, 1-8: block protrusion, 1-9: limiting protrusion, 2: second yarn guide, 3: turntable, 3-1: first yarn threading hole;

[0030] 10: Yarn feeding device; 101: First tensioner; 102: First winding roller; 103: Second yarn threading hole; 30: Winding device; 301: Second tensioner; 302: Yarn guide; 303: Second winding roller.

[0031] A: Base yarn, B: Primary function yarn, C: Secondary function yarn, D: Tertiary function yarn. Detailed Implementation

[0032] The segmented yarn wrapping device of the present invention will now be described in detail with reference to the accompanying drawings.

[0033] Example 1

[0034] A yarn changer, such as Figure 1 As shown, it includes: a yarn cutter 1-1, a first yarn feeder 1-2, a support tube 1-3, a first compression spring 1-4, a traction rope 1-5, a yarn bobbin base 1-6, and a motor 1-7. The yarn bobbin base 1-6 is used to wrap yarn. A channel is formed at the axial position of the yarn bobbin base 1-6 (the length direction of the channel is parallel to the axis of the yarn bobbin base 1-6). The rear end of the support tube 1-3 extends into the channel and is located in the channel. The front end of the support tube 1-3 is located outside the channel. The first yarn feeder 1-2 is fixed to the front of the support tube 1-3 and is used to attract the end of the yarn wrapped around the yarn bobbin base 1-6. The yarn cutter 1-1 is installed at the front end of the support tube 1-3. The motor 1-7 is a ratchet motor and is installed at the rear end of the yarn bobbin base 1-6.

[0035] like Figures 2-3 As shown, the yarn shearer 1-1 includes: two blades 1-1-1 and a second compression spring 1-1-2. The two blades 1-1-1 are hinged together with their blades facing each other. Each end of the second compression spring 1-1-2 is connected to one blade 1-1-1. The second compression spring 1-1-2 applies a pushing force to the two blades 1-1-1 to open and separate the blades of the two blades 1-1-1. Figure 2 As shown;

[0036] One end of the traction rope 1-5 is connected to the output shaft of the motor 1-7, and the other end of the traction rope 1-5 passes through the channel and support tube 1-3 and is connected to the yarn cutter 1-1. The end of the traction rope 1-5 away from the motor 1-7 splits into two connecting ropes, each connected to a blade 1-1-1. The motor 1-7 rotates, causing the traction rope 1-5 to shorten. Under the pull of the traction rope 1-5, the two blades 1-1-1 close and their blades contact each other, thus cutting the yarn. Figure 3 As shown;

[0037] like Figure 1 and Figure 4As shown, the support tube 1-3 has a strip-shaped opening 1-3-3 along its length direction, and a block-shaped protrusion 1-8 is formed (fixed) inside the channel. The block-shaped protrusion 1-8 is located inside the strip-shaped opening 1-3-3 and serves as a track to allow the support tube 1-3 to slide along the length direction of the channel.

[0038] A limiting protrusion 1-9 is fixedly installed in the support tube 1-3 in front of the block protrusion 1-8, and the first compression spring 1-4 is limited in the channel between the block protrusion 1-8 and the limiting protrusion 1-9.

[0039] Preferably, the support tube 1-3 includes: a first tube body 1-3-1 and a second tube body 1-3-2, the first tube body 1-3-1 and the second tube body 1-3-2 are connected, the included angle between the axes of the first tube body 1-3-1 and the second tube body 1-3-2 is 120°, the rear end of the first tube body 1-3-1 extends into the channel and is located in the channel, and the second tube body 1-3-2 is always located outside the channel.

[0040] Preferably, a circular plate is fixed inside the support tube 1-3, and a first through hole for the traction rope 1-5 to pass through is formed at the center of the circular plate. Figure 1 As shown, the circular plate is located at the connection between the first tube segment 1-3-1 and the second tube segment 1-3-2.

[0041] Preferably, the limiting protrusion 1-9 is an arc shape, and the limiting protrusion 1-9 is located inside the first section tube 1-3-1. A second through hole for passing through the traction rope 1-5 is formed at the position of the limiting protrusion 1-9 opposite to the axis of the first section tube 1-3-1.

[0042] Preferably, the outer contour of the front part of the yarn spool base 1-6 is a frustum shape that gradually narrows from back to front.

[0043] Preferably, the two blades 1-1-1 are hinged at hinge point 1-1-3, the second compression spring 1-1-2 is connected to the blade 1-1-1 at the rear of hinge point 1-1-3, and the blade edge is located in front of hinge point 1-1-3.

[0044] Preferably, the first yarn feeder 1-2 is a vacuum generator.

[0045] The working method of the yarn changer 1 includes: the yarn wrapped around the yarn spool base 1-6 passes between the blades of the two blades 1-1-1; the motor 1-7 rotates in the forward direction, causing the traction rope 1-5 to wrap around the output shaft of the motor 1-7, thereby shortening the length of the traction rope 1-5; the rear part of the support tube 1-3 is pulled into the channel; the first compression spring 1-4 is compressed on the block protrusion 1-8 by the limiting protrusion 1-9; simultaneously, the traction rope 1-5 applies tension to the yarn cutter 1-1, and the two blades 1-1-1 of the yarn cutter 1-1 close to cut the yarn. The first yarn guide 1-2 attracts the end of the yarn, thereby fixing the yarn. After the yarn is cut, the motor 1-7 rotates in the opposite direction, and the traction rope 1-5 is wound down from the output shaft of the motor 1-7. The length of the traction rope 1-5 increases, and the compressed first compression spring 1-4 applies a pushing force toward the outside of the channel to the limiting protrusion 1-9, thereby pushing the support tube 1-3 forward of the channel. The two blades 1-1-1 of the yarn cutter 1-1 separate under the action of the second compression spring 1-1-2.

[0046] Example 2

[0047] like Figure 5 As shown, a wrapping device includes: a yarn changer 1, a second yarn feeder 2, and a turntable 3 as described in Embodiment 1, wherein the second yarn feeder 2 is a vacuum generator. The turntable 3 has a first threading hole 3-1 for passing the base yarn through its center. The turntable 3 is mounted on a support frame and can rotate about the base yarn as its axis. The rotation speed of the turntable 3 is adjustable. In embodiment 1, there are three yarn changers 1. The three yarn changers 1 are arranged circumferentially with the first threading hole 3-1 as the center. All three yarn changers 1 are fixed on the turntable 3. The yarn cutter 1-1 of the three yarn changers 1 is located on the same side of the turntable 3. The front part of the yarn spool base 1-6 of each yarn changer 1 is wrapped with yarn. The yarn wrapped around the yarn spool base 1-6 of the three yarn changers 1 is different. The yarn wrapped around the yarn spool base 1-6 is used as the outer wrapping yarn. The second yarn guide 2 is located on one side of the (fixed) turntable 3. The second yarn guide 2 is close to the first yarn guide 1-2 and does not contact any of the yarn changers 1.

[0048] The working method of the above-mentioned wrapping device includes the following steps:

[0049] S1, allowing the base yarn to pass through the first threading hole 3-1;

[0050] S2, before the wrapping begins, the ends of the outer wrapping yarns of the three yarn changers 1 of the wrapping device are all fixed by their corresponding first yarn guides 1-2 (e.g., attracted by the first yarn guide). When it is necessary to wrap the yarn outside a certain yarn changer 1, that yarn changer 1 is used as the original yarn changer, so that the length of the support tube 1-3 of the original yarn changer extending from the channel is increased and the blades of the two blades 1-1-1 are separated.

[0051] At this point, compared to the other two yarn changers, the distance between the first yarn guide 1-2 and the second yarn guide 2 of the original yarn changer is shortened. The turntable 3 is rotated until the yarn cutter 1-1 of the original yarn changer is positioned between the second yarn guide 2 and the first yarn guide 1-2 of the original yarn changer. This causes the first yarn guide 1-2 of the original yarn changer to stop fixing the ends of the yarn on the original yarn changer, and the second yarn guide 2 begins to attract the yarn. At this time, the ends of the yarn originally attracted to the first yarn guide 1-2 of the original yarn changer pass between the two blades 1-1-1 and are attracted to the second yarn guide 2. With the second yarn guide 2 fixing the ends of the yarn on the original yarn changer, the blades of the two blades 1-1-1 of the original yarn changer remain separated, causing the turntable 3 to rotate. The original yarn changer rotates around the base yarn as its axis, and the yarn on the original yarn changer is spirally wrapped around the base yarn.

[0052] S3, when the yarn on the original yarn changer is fully wound and another yarn changer 1 needs to be used as the new original yarn changer, the motor 1-7 of the original yarn changer is rotated, and the traction rope 1-5 applies tension to its yarn cutter 1-1, causing the two blades 1-1-1 of the yarn cutter 1-1 to close and cut the yarn. The first yarn guide 1-2 of the original yarn changer then attracts the end of the yarn, thus fixing the yarn. The new yarn changer 1 is then used as the original yarn changer in S2, and the process is executed according to S2.

[0053] During the operation of the wrapping device, the support tube 1-3 of the yarn changer, which is the original yarn changer, extends out of the channel; the rear part of the support tube 1-3 of the yarn changer that is not the original yarn changer is retracted into the channel as much as possible.

[0054] The wrapping device allows different yarns to be wrapped around the base yarn, thus obtaining segmented wrapped yarn.

[0055] Example 3

[0056] like Figure 6 As shown, a segmented yarn wrapping device includes: a yarn feeding device 10, a wrapping device (as in Embodiment 2), and a winding device 30 arranged sequentially from front to back. The yarn feeding device 10 includes: a first tensioner 101, a first winding roller 102, and a second threading hole 103 arranged sequentially from front to back. The first winding roller 102 and the first tensioner 101 apply a certain tension to the fed base yarn, ensuring uniform wrapping during the wrapping process and avoiding repeated wrapping due to uneven tension. The second threading hole 103 controls the movement path of the fed base yarn, ensuring it is within the wrapping range of the wrapping device.

[0057] The winding device 30 includes: a second tensioner 301, a yarn guide 302, and a second winding roller 303 arranged sequentially from front to back. The second winding roller 303 is used to wind the segmented wrapped yarn, and the yarn guide 302 is used to evenly wind the wrapped segmented wrapped yarn onto the second winding roller 303. The second winding roller 303 is connected to a motor, and the motor provides power to the second winding roller 303 and controls the winding speed.

[0058] This invention provides a segmented yarn wrapping device that meets the requirements for automated wrapping of various functional yarns. The base yarn passes through the first yarn-feeding hole 3-1 in the wrapping device via the yarn feeding device 10. The outer wrapping yarn is mounted on the yarn changer 1 of the wrapping device. Through the action of the yarn changer 1, the introduction of the outer wrapping yarn before wrapping and the cutting of the outer wrapping yarn after wrapping are completed. This device enables the segmented wrapping of various functional yarns onto the base yarn, improving the production efficiency of multi-segmented yarn wrapping.

[0059] The yarns wrapped around the yarn spools 1-6 of the three yarn changers 1 are, in sequence, the first functional yarn, the second functional yarn, and the third functional yarn. The final segmented wrapped yarn is centered on a base yarn, with the first functional yarn, the second functional yarn, and the third functional yarn as the outer wrapping yarns. Figure 7 As shown, it includes: base yarn A, first functional yarn B, second functional yarn C, and third functional yarn D. The first functional yarn B, second functional yarn C, and third functional yarn D are spirally wound onto the base yarn.

[0060] Wrapping methods are divided into three types: seam wrapping, overlapping wrapping, and gap wrapping. Seam wrapping (also called continuous wrapping) involves the edges of adjacent yarn spirals tightly touching (edge-to-edge, without gaps). Overlapping wrapping involves a portion of the yarn overlapping a portion of the previous spiral, also called positive overlap wrapping. Gap wrapping involves a certain gap between the subsequent and preceding yarn spirals, also called negative overlap wrapping. When the wrapped yarn wraps to the base yarn, its wrapping method can be any one or a combination of seam wrapping, overlapping wrapping, and gap wrapping. Different wrapping methods can be achieved by controlling the rotation speed of the turntable 3 and the winding speed of the winding device 30 in the wrapping device.

[0061] The method for preparing segmented wrapped yarn according to the present invention includes the following steps:

[0062] The base yarn is passed through the first tensioner 101, the first winding roller 102, then through the second yarn feeding hole 103 of the yarn feeding device and the first yarn feeding hole 3-1 of the wrapping device, and finally wound onto the second winding roller 303 through the second tensioner 301 and the yarn guide 302 of the winding device. The winding device is then switched on, and the second winding roller 303 winds at a speed of 10-100 r / min.

[0063] The first functional yarn B, the second functional yarn C, and the third functional yarn D are each wound onto the yarn spool base 1-6 of a yarn changer 1. The heads of the first functional yarn B, the second functional yarn C, and the third functional yarn D are fixed (adsorbed) by the first yarn guide 1-2 of their respective yarn changers 1.

[0064] The first yarn changer uses a first-function yarn for its outer wrapping, the second yarn changer uses a second-function yarn, and the third yarn changer uses a third-function yarn. Under the action of yarn changer 1, the first yarn changer operates as the original yarn changer in Example 2, causing the turntable 3 of the wrapping device to rotate, and the first-function yarn is spirally wrapped around the base yarn. After the first-function yarn is wrapped, it breaks under the action of the first yarn changer, and simultaneously, most of the support tube 1-3 of the first yarn changer retracts into the channel. The second yarn changer then operates as the original yarn changer in Example 2, beginning spiral wrapping. After the second-function yarn is wrapped, it breaks again, and simultaneously, the third yarn changer operates as the original yarn changer in Example 2, beginning spiral wrapping. The resulting yarn is a segmented wrapped yarn.

[0065] The rotational speed of turntable 3 in the winding device is 10–100 r / min, and the winding speed of the winding device is 10–100 r / min. The yarn wrapping density of the segmented wrapped yarn is jointly controlled by the rotational speed of turntable 3 in the winding device and the winding speed of the winding device.

[0066] Example 4

[0067] The segmented wrapped yarn was obtained using the segmented wrapped yarn device described in Example 3. The method for obtaining the second functional yarn was as follows: a 20cm long cotton yarn with a fineness of 100Tex was immersed in a first mixture for 10 minutes, then the cotton yarn was removed and placed in an oven to dry at 40°C for 1 hour to obtain the second functional yarn. The first mixture was a mixture of polyvinyl alcohol (PVA), polystyrene sulfonic acid (PSS), and ultrapure water, with a PVA mass fraction of 5wt% and a PSS mass fraction of 10wt%.

[0068] The base yarn is 100Tex cotton yarn.

[0069] The primary functional yarn is 90Tex silver-plated yarn (nylon fiber impregnated with anionic ions, 200d, purchased from: Dazhiyuan Anti-radiation Fabric Store);

[0070] The third functional yarn is polypyrrole yarn. The method for obtaining polypyrrole yarn includes: immersing cotton yarn with a length of 20 cm and a fineness of 100 tex in a 0.5 mol / L pyrrole aqueous solution for 30 min, then immersing the cotton yarn in a 0.5 mol / L ferric chloride aqueous solution for polymerization for 3 hours, washing it three times with water to remove unpolymerized solution from the surface, and then drying it in a 40℃ oven for 2 hours to obtain polypyrrole yarn.

[0071] The first functional yarn, the second functional yarn, and the third functional yarn are each wound onto the yarn bobbin base 1-6 of a yarn changer 1. The rotational speed of the winding device turntable 3 is set to 20 r / min, and the winding speed of the second winding roller 303 is 10 r / min.

[0072] The yarns are wrapped sequentially as follows: a first functional yarn, a second functional yarn, and a third functional yarn. After the first functional yarn is wrapped around the base yarn, it forms a first functional segment on the base yarn. After the second functional yarn is wrapped around the base yarn, it forms a second functional segment on the base yarn. After the third functional yarn is wrapped around the base yarn, it forms a third functional segment on the base yarn. The length of the first functional segment along the base yarn is 1 cm, the length of the second functional segment along the base yarn is 1 cm, and the length of the third functional segment along the base yarn is 1 cm.

[0073] The first and second functional segments are wrapped in an overlapping manner (overlap length of 0.2cm), and the second and third functional segments are wrapped in an overlapping manner (overlap length of 0.2cm).

[0074] The segmented winding yarn device winds the yarn to form a first functional segment, a second functional segment, and a third functional segment, serving as a moisture power generation unit. The moisture power generation unit was tested under conditions of 80% relative humidity and 25℃. Connecting the two ends of the moisture power generation unit to a multimeter, the test results showed that one moisture power generation unit could output an open-circuit voltage of 0.5V and a short-circuit current of 10μA.

[0075] The present invention has been described above by way of example. It should be noted that any simple modifications, alterations or other equivalent substitutions that can be made by those skilled in the art without creative effort without departing from the core of the present invention fall within the protection scope of the present invention.

Claims

1. A wrapping device, comprising: The device comprises a yarn changer (1), a second yarn feeder (2), and a turntable (3). The turntable (3) has a first yarn-passing hole (3-1) at its center for passing through the base yarn. The turntable (3) is mounted on a support frame and can rotate about the base yarn as its axis. There are N yarn changers (1), which are arranged circumferentially around the first yarn-passing hole (3-1). All N yarn changers (1) are fixedly mounted on the turntable (3). The yarn cutters (1-1) of the N yarn changers (1) are located on the same side of the turntable (3); the front of the yarn spool base (1-6) of each yarn changer (1) is wrapped with yarn, and the yarn wrapped around the yarn spool base (1-6) of the N yarn changers (1) is different; the second yarn guide (2) is located on one side of the turntable (3), the second yarn guide (2) is close to the first yarn guide (1-2) and does not contact any of the yarn changers (1); The yarn changer includes: a yarn cutter (1-1), a first yarn feeder (1-2), a support tube (1-3), a first compression spring (1-4), a traction rope (1-5), a yarn spool base (1-6), and a motor (1-7). The yarn spool base (1-6) is used to wrap the yarn. A channel is formed at the axial position of the yarn spool base (1-6). The rear end of the support tube (1-3) extends into the channel and is located in the channel. The front end of the support tube (1-3) is located outside the channel. The first yarn feeder (1-2) is fixed to the front of the support tube (1-3) and is used to attract the end of the yarn wrapped around the yarn spool base (1-6). The yarn cutter (1-1) is installed at the front end of the support tube (1-3). The motor (1-7) is installed at the rear end of the yarn spool base (1-6). The yarn cutter (1-1) includes: two blades (1-1-1) and a second compression spring (1-1-2). The two blades (1-1-1) are hinged and their blades are arranged opposite each other. The two ends of the second compression spring (1-1-2) are each connected to one blade (1-1-1). The second compression spring is used to separate the blades of the two blades (1-1-1). One end of the traction rope (1-5) is connected to the output shaft of the motor (1-7), and the other end of the traction rope (1-5) passes through the channel and the support tube (1-3) and is connected to the yarn cutter (1-1). The end of the traction rope (1-5) away from the motor (1-7) is divided into two connecting ropes, and each connecting rope is connected to a blade (1-1-1). The motor (1-7) rotates and drives the length of the traction rope (1-5) to shorten, and the two blades (1-1-1) close and the blades contact each other. The support tube (1-3) has a strip-shaped opening (1-3-3) along its length direction, and a block-shaped protrusion (1-8) is formed inside the channel. The block-shaped protrusion (1-8) is located inside the strip-shaped opening (1-3-3) and serves as a track to allow the support tube (1-3) to slide along the length direction of the channel. A limiting protrusion (1-9) is fixedly installed in the support tube (1-3) in front of the block protrusion (1-8), and the first compression spring (1-4) is limited in the channel between the block protrusion (1-8) and the limiting protrusion (1-9).

2. The wrapping device according to claim 1, characterized in that, The support tube (1-3) includes: a first section of tube (1-3-1) and a second section of tube (1-3-2). The first section of tube (1-3-1) and the second section of tube (1-3-2) are connected. The included angle between the axes of the first section of tube (1-3-1) and the second section of tube (1-3-2) is 120°. The rear end of the first section of tube (1-3-1) extends into the channel and is located in the channel. The second section of tube (1-3-2) is always located outside the channel.

3. The wrapping device according to claim 2, characterized in that, A circular plate is fixed inside the support tube (1-3). A first through hole for the traction rope (1-5) is formed at the center of the circular plate. The circular plate is located at the connection between the first section of the tube (1-3-1) and the second section of the tube (1-3-2).

4. The wrapping device according to claim 2, characterized in that, The limiting protrusion (1-9) is an arc-shaped protrusion. A second through hole for the traction rope (1-5) is formed at the position opposite to the axis of the first tube (1-3-1).

5. The wrapping device according to claim 1, characterized in that, The front outer contour of the yarn spool base (1-6) is a frustum shape that gradually narrows from back to front.

6. The wrapping device according to claim 1, characterized in that, The two blades (1-1-1) are hinged at the hinge point (1-1-3). The second compression spring (1-1-2) is connected to the blade (1-1-1) at the rear of the hinge point (1-1-3), and the blade is located in front of the hinge point (1-1-3).

7. The wrapping device according to claim 1, characterized in that, The first yarn feeder (1-2) is a vacuum generator.

8. A segmented yarn wrapping device, characterized in that, include: The yarn feeding device (10), the wrapping device and the winding device (30) as described in any one of claims 1 to 7 are arranged sequentially from front to back.

9. The segmented yarn wrapping device according to claim 8, characterized in that, The yarn feeding device (10) includes a first tensioner (101), a first winding roller (102) and a second yarn threading hole (103) arranged sequentially from front to back. The winding device (30) includes a second tensioner (301), a yarn guide (302) and a second winding roller (303) arranged sequentially from front to back.

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