Preparation method and device of twist-free coated thread

Abstract

The invention discloses a preparation method and device of a kink-free covered thread, and relates to the technical field of textile. The core yarn is output upwards through rotation unwinding of the first hollow spindle, so that the core yarn is twisted in real time under the rotation action of the first spindle tube and directly enters the hollow pipeline of the second hollow spindle through the tension assembly; the second hollow spindle rotates and unwinds to upwards output the outer wrapped yarn, and the rotating direction of the first spindle collar is opposite to the rotating direction of the second spindle collar; after core yarn led out of an outlet of a hollow pipeline and outer wrapped yarn are combined on an upper combined yarn guide hook, the outer wrapped yarn is wrapped on the surface of the core yarn to form the twist-free wrapping yarn, the real-time twisting degree of the core yarn is matched with the wrapping degree of the outer wrapped yarn, real-time twisting of the core yarn and wrapping of the outer wrapped yarn in the wrapping yarn preparation process are achieved, and the wrapping yarn is formed. The twisting direction of core yarn twisting and the twisting direction of outer wrapped yarn wrapping are opposite, the reverse twisting moment generated by re-twisting of the core yarn counteracts the reverse twisting moment generated by wrapping of the outer wrapped yarn, and torque balance in the wrapped yarn is achieved.

Description

Technical Field

[0001] The invention relates to the field of textile technology, and in particular to a method and a device for preparing a kink-free coated wire. Background Art

[0002] Twisting is a method of making the fibers in the yarn bend, stretch, and twist by rotating the yarn around its own axis, generating centripetal pressure, strengthening the interaction between the fibers in the yarn and making them more tightly held, so that the yarn has a certain degree of strength and elongation, such as the twisting of short-fiber single yarns and filament single yarns. A strand composed of two or more single yarns can also be twisted together to form a whole by twisting.

[0003] The twisting action causes the fibers in the yarn body to bend, stretch, and twist, thus generating internal stress in the yarn body. The internal stress causes the yarn to tend to untwist: if one end of the twisted yarn is released, the yarn will rotate in the opposite direction of the twisting rotation direction under the action of the anti-twist torque generated by the internal stress, that is, untwist. Due to the existence of the anti-twist torque in the yarn, the twisted yarn is an unstable structure. If the yarn with a certain anti-twist torque does not form a free end, when it is in a tensioned state under a certain tension, the tension will keep the vector of the anti-twist torque acting on the yarn axis. The anti-twist torque will only adjust along the yarn axis with the change of tension without destroying the shape and structure of the yarn. Once the tension of the yarn is not enough to keep the yarn straight, the anti-twist torque vector deviates from the yarn axis. At the weak loop of the yarn where the bending deformation is large, the residual torque of the yarn segments on both sides will produce a coupling effect and twist the yarn segments on both sides together. The schematic diagram of the twisting state of the yarn is shown in Figure 1 shown.

[0004] The size of the yarn anti-twist torque can be tested by the closed coil method and expressed by the "kink index": that is, after the unit length of yarn is folded in half, the yarn will self-twist under the action of the residual torque, and the number of self-twist twists on the unit length of yarn, that is, the "kink index", is used to express the size of the anti-twist torque. For example, if a 500mm long yarn is held at both ends and folded in half to a length of 250mm, and the number of self-twists of the yarn under the action of the anti-twist torque is 50 twists, then the kink index is 200 twists / meter. The larger the kink index, the greater the yarn anti-twist torque, the easier the yarn is to kink, and the more serious the kink is under low tension or no tension.

[0005] The preparation process of the covered wire provided by the related technology often directly winds the outer wrapped yarn in a spiral shape onto the surface of the core yarn. When the outer wrapped yarn is spirally wound onto the core yarn, the outer wrapped yarn will bend and deform to a certain extent, and will also produce a counter-twist torque similar to the twisting effect. That is, although the covered wire will not undergo untwisting similar to the twisted yarn, it will also have a counter-twist torque due to the bending deformation of the outer wrapped yarn, and will also self-twist and kink when the tension is not enough to keep the yarn straight. Obviously, when the covered wire with a counter-twist torque is used to prepare fabric fabrics in the subsequent preparation, the kinking of the yarn will inevitably cause the fabric texture to distort and deform, affecting its aesthetics and user experience. For example, Figure 2 This is a schematic diagram of a fabric woven from a covered wire with a large kink index. Figure 3 This is a schematic diagram of the fabric woven from the covered wire with a smaller kink index. Figure 2 , Figure 3 It can be seen that when the kink index of the coated wire is relatively large, the longitudinal rows of the naturally placed fabric will be obviously skewed, and the fabric as a whole will show more wrinkles and undulations, which will have a greater negative impact on the subsequent processing of the fabric and the final fabric quality. Summary of the invention

[0006] In view of the above-mentioned problems existing in the related technologies, the present invention provides a device for preparing a kink-free covered wire. Through the innovative design of the device structure, real-time twisting of the core yarn and covering of the outer winding yarn can be realized during the preparation of the covered wire. The twisting directions of the core yarn twisting and the outer winding yarn covering are arranged in opposite directions, and the anti-twist torque generated by the re-twisting of the core yarn is used to offset the anti-twist torque generated by the wrapping of the outer winding yarn, so as to achieve torque balance inside the covered wire and prepare a kink-free covered wire.

[0007] According to a first aspect of an embodiment of the present invention, there is provided a device for preparing a kink-free covered wire, characterized in that the device comprises a first hollow spindle mechanism, the first hollow spindle mechanism comprises a first hollow spindle, the first hollow spindle is fixed with a first spindle tube through a spindle cap, the first spindle tube rotates synchronously with the first hollow spindle, and a core yarn is wound on the surface of the first spindle tube; A tension assembly and a second hollow spindle mechanism are sequentially arranged above the first hollow spindle mechanism, the second hollow spindle mechanism comprises a second hollow spindle, a second spindle tube is fixed to the second hollow spindle through a spindle cap, the second spindle tube rotates synchronously with the second hollow spindle, and the rotation direction of the first spindle tube is opposite to that of the second spindle tube, and an outer wrapped yarn is wound on the surface of the second spindle tube; The core yarn unwound from the first spindle tube is twisted in real time under the rotation of the first spindle tube, and enters the hollow pipe entrance of the second hollow spindle after the tension is adjusted by the tension component, and then is led out from the hollow pipe exit of the second hollow spindle, and after being combined with the outer wrapping yarn unwound from the surface of the second spindle tube at the upper joining yarn guide hook, the outer wrapping yarn is wrapped around the surface of the core yarn to form a kink-free covered line, and the real-time twisting twist of the core yarn matches the wrapping twist of the outer wrapping yarn; A yarn guide roller, a yarn guide rod, a traverse yarn guide, a winding roller and a yarn tube are arranged in sequence above the converging yarn guide hook; the kink-free covered wire is led upwards through the yarn guide roller, and then guided by the yarn guide rod and the traverse yarn guide, and then wound on the surface of the yarn tube by the winding roller.

[0008] Preferably, the preparation device further comprises a core yarn guide ring and an outer wrapping yarn guide ring; The core yarn guide ring is arranged between the tension assembly and the second hollow spindle, and after the core yarn is output from the tension assembly, it enters the hollow pipe of the second hollow spindle through the core yarn guide ring, and the core yarn conductor ring is arranged at one end of the first telescopic rod arranged transversely, and the core yarn conductor ring adjusts the output route of the core yarn to coincide with the center line of the hollow pipe of the second hollow spindle by controlling the telescopic state of the first telescopic rod; The outer wrapped yarn guide ring is fixedly connected to one side of the upper surface of the second spindle tube through a second telescopic rod arranged longitudinally, and the outer wrapped yarn guide ring rotates synchronously with the second spindle tube. After the outer wrapped yarn is unwound and output from the second spindle tube, it enters the meeting yarn guide hook through the outer wrapped yarn guide ring. The outer wrapped yarn guide ring adjusts the outer wrapped yarn to be spirally wrapped around the core yarn surface at a preset angle by controlling the telescopic state of the second telescopic rod.

[0009] Preferably, the preparation device further comprises an identification component; Wherein, the identification component includes a first camera matching the first ingot tube position and a second camera matching the second ingot tube position; The first hollow ingot is transmission-connected to the first power mechanism, and the second hollow ingot is transmission-connected to the second power mechanism; The first camera and the first power mechanism are respectively connected to the control console by electrical signals, and the second camera and the second power mechanism are respectively connected to the control console by electrical signals; The first camera is used to capture the core yarn image on the surface of the first spindle tube and send it to the console; the second camera is used to capture the outer wrapping yarn image on the surface of the second spindle tube and send it to the console; the console is used to determine the core yarn material corresponding to the core yarn according to the core yarn image, determine the outer wrapping yarn material corresponding to the outer wrapping yarn according to the outer wrapping yarn image, and then adjust the respective rotation states of the first power mechanism and the second power mechanism according to the preset twisting relationship corresponding to the core yarn material and the outer wrapping yarn material, so that the real-time twisting twist of the core yarn matches the wrapping twist of the outer wrapping yarn to offset the mutual anti-twist torque.

[0010] Preferably, the console directly identifies the yarn materials corresponding to the core yarn and the outer wrapped yarn according to the core yarn image and the outer wrapped yarn image; or, A yarn label corresponding to the core yarn is fixed at a preset position of the first spindle tube, and a yarn label corresponding to the outer wrapping yarn is fixed at a preset position of the second spindle tube. The console determines the yarn materials corresponding to the core yarn and the outer wrapping yarn according to the yarn labels included in the core yarn image and the outer wrapping yarn image.

[0011] Preferably, the preset twisting relationship includes the corresponding real-time twisting twist and wrapping twist relationship when different core yarn materials and different outer wrapping yarn materials are used to achieve knot-free preparation of the covered wire.

[0012] According to a second aspect of an embodiment of the present invention, a method for preparing a kink-free covered wire is provided, wherein the method comprises: S10: After the first spindle tube wound with the core yarn is fixed to the first hollow spindle through the spindle cap, the first hollow spindle rotates and unwinds to output the core yarn upward, so that the core yarn is twisted in real time under the rotation of the first spindle tube, and enters the hollow pipe inlet of the second hollow spindle after the tension is adjusted by the tension component, and then is led out from the hollow pipe outlet of the second hollow spindle; S20: After the second spindle tube wound with the outer wrapped yarn is fixed to the second hollow spindle through a spindle cap, the second hollow spindle rotates and unwinds to output the outer wrapped yarn upward, and the rotation direction of the first spindle tube is opposite to the rotation direction of the second spindle tube; S30: after the core yarn led out of the hollow pipe outlet and the outer wrapping yarn unwound and outputted from the surface of the second spindle tube are combined at the upper joining yarn guide hook, the outer wrapping yarn is wrapped around the surface of the core yarn to form a kink-free covered yarn, and the real-time twisting twist of the core yarn matches the wrapping twist of the outer wrapping yarn; S40: The kink-free covered yarn is led upward through a yarn lead-in roller, and then guided by a yarn guide rod and a traverse yarn guide, and then wound on the surface of the yarn tube by a winding roller.

[0013] Preferably, after the tension of the core yarn in S10 is adjusted by the tension component, the preparation method further comprises: The output route of the core yarn is adjusted to coincide with the center line of the hollow pipe of the second hollow spindle by controlling the telescopic state of the first telescopic rod connected to the core yarn conductor ring; the core yarn guide ring is arranged between the tension assembly and the second hollow spindle, and after the core yarn is output from the tension assembly, it enters the hollow pipe of the second hollow spindle through the core yarn guide ring, and the core yarn conductor ring is arranged at one end of the first telescopic rod arranged transversely; After the second hollow spindle rotates and unwinds in S20 to output the outer wrapped yarn upward, the preparation method further includes: By controlling the telescopic state of the second telescopic rod connected to the outer wrapped yarn guide ring, the outer wrapped yarn is adjusted to be spirally wrapped around the core yarn surface at a preset angle; the outer wrapped yarn guide ring is fixedly connected to one side of the upper surface of the second spindle tube through the longitudinally arranged second telescopic rod, and the outer wrapped yarn guide ring rotates synchronously with the second spindle tube. After the outer wrapped yarn is unwound and output from the second spindle tube, it enters the meeting yarn guide hook through the outer wrapped yarn guide ring.

[0014] Preferably, when the first spindle tube wound with the core yarn is fixed to the first hollow spindle through a spindle cap, and the second spindle tube wound with the outer wrapped yarn is fixed to the second hollow spindle through a spindle cap, the preparation method further includes: Taking an image of the core yarn on the surface of the first spindle tube by a first camera matching the position of the first spindle tube and sending the image to a control console; Taking an image of the outer wrapped yarn on the surface of the second spindle tube by a second camera matched with the position of the second spindle tube and sending the image to the console; The control console determines the core yarn material corresponding to the core yarn according to the core yarn image, determines the outer wrapping yarn material corresponding to the outer wrapping yarn according to the outer wrapping yarn image, and then adjusts the rotation states of the first power mechanism and the second power mechanism respectively according to the preset twisting relationship corresponding to the core yarn material and the outer wrapping yarn material, so that the real-time twisting twist of the core yarn matches the wrapping twist of the outer wrapping yarn to offset the mutual anti-twist torque, and the first spindle tube hollow spindle is transmission connected to the first power mechanism, and the second hollow spindle is transmission connected to the second power mechanism.

[0015] Preferably, the console directly identifies the yarn materials corresponding to the core yarn and the outer wrapped yarn according to the core yarn image and the outer wrapped yarn image; or, A yarn label corresponding to the core yarn is fixed at a preset position of the first spindle tube, and a yarn label corresponding to the outer wrapping yarn is fixed at a preset position of the second spindle tube. The console determines the yarn materials corresponding to the core yarn and the outer wrapping yarn according to the yarn labels included in the core yarn image and the outer wrapping yarn image.

[0016] Preferably, the preset twisting relationship includes the corresponding real-time twisting twist and wrapping twist relationship when different core yarn materials and different outer wrapping yarn materials are used to achieve knot-free preparation of the covered wire.

[0017] Compared with the prior art, the method and device for preparing a kink-free covered wire provided by the present invention have the following advantages: The method and device for preparing a kink-free covered wire provided by the present invention output the core yarn upward by rotating and unwinding the first hollow spindle, so that the core yarn is twisted in real time under the rotation of the first spindle tube, and directly enters the hollow pipe inlet of the second hollow spindle after the tension is adjusted by the tension component, and then is led out from the hollow pipe outlet of the second hollow spindle; then the second hollow spindle rotates and unwinds to output the outer wrapped yarn upward, and the rotation direction of the first spindle tube is opposite to that of the second spindle tube; the core yarn led out from the hollow pipe outlet is unwound on the surface of the second spindle tube After the output outer wrapping yarn is combined with the upper joining yarn guide hook, the outer wrapping yarn is wrapped around the surface of the core yarn to form a kink-free covered wire. The real-time twisting twist of the core yarn matches the wrapping twist of the outer wrapping yarn, thereby realizing the real-time twisting of the core yarn and the wrapping of the outer wrapping yarn in the preparation process of the covered wire. The twist directions of the core yarn twisting and the outer wrapping yarn wrapping are configured in opposite directions, and the anti-twist torque generated by the core yarn twisting again is used to offset the anti-twist torque generated by the outer wrapping yarn wrapping, thereby realizing the torque balance inside the covered wire and preparing a kink-free covered wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of a kinked state of a yarn provided by an embodiment of the present invention.

[0020] Figure 2 It is a schematic diagram of a fabric obtained by weaving a covered wire with a large kink index provided by the relevant technology.

[0021] Figure 3 It is a schematic diagram of a fabric obtained by weaving a covered wire with a small kink index provided by the relevant technology.

[0022] Figure 4It is a schematic diagram of a device for preparing a kink-free covered wire provided in an embodiment of the present invention.

[0023] Figure 5 It is a schematic diagram of another device for preparing a kink-free covered wire provided in an embodiment of the present invention.

[0024] Figure 6 It is a schematic diagram of another device for preparing a kink-free covered wire provided in an embodiment of the present invention.

[0025] Figure 7 The present invention provides a flowchart of a method for preparing a kink-free covered wire according to an embodiment of the present invention.

[0026] Figure 8 It is a schematic diagram of the morphology of a 500 mm long yarn sample of covered yarn spun by five spinning schemes provided in an embodiment of the present invention after being folded in half and self-twisted. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 4 Schematic diagram of a device for preparing a kink-free covered wire provided by an embodiment of the present invention. Figure 4 The preparation device comprises a first hollow spindle mechanism, wherein the first hollow spindle mechanism comprises a first hollow spindle 1, wherein the first hollow spindle 1 is fixed with a first spindle tube 2 through a spindle cap, wherein the first spindle tube 2 rotates synchronously with the first hollow spindle 1, and a core yarn 3 is wound on the surface of the first spindle tube 2; A tension assembly 4 and a second hollow spindle mechanism are sequentially arranged above the first hollow spindle mechanism, the second hollow spindle mechanism comprises a second hollow spindle 5, the second hollow spindle 5 is fixed with a second spindle tube 6 through a spindle cap, the second spindle tube 6 rotates synchronously with the second hollow spindle 5, and the rotation direction of the first spindle tube 2 is opposite to that of the second spindle tube 6, and an outer wrapped yarn 7 is wound on the surface of the second spindle tube 6; The core yarn 3 unwound from the first spindle tube 2 is twisted in real time under the rotation of the first spindle tube 2, and enters the hollow pipe entrance of the second hollow spindle 5 after the tension is adjusted by the tension component 4, and then is led out from the hollow pipe exit of the second hollow spindle 5, and after being combined with the outer wrapped yarn 7 unwound from the surface of the second spindle tube 6 and joined at the upper joining yarn guide hook 8, the outer wrapped yarn 7 is wrapped around the surface of the core yarn 3 to form a kink-free covered line, and the real-time twisting twist of the core yarn 3 matches the wrapping twist of the outer wrapped yarn 7; A yarn guide roller 9, a yarn guide rod 10, a traverse yarn guide 11, a winding roller 12 and a yarn tube 13 are arranged in sequence above the converging yarn guide hook 8. The knot-free covered wire is led upward through the yarn guide roller 9, and then guided by the yarn guide rod 10 and the traverse yarn guide 11, and then wound on the surface of the yarn tube 13 by the winding roller 12.

[0029] It should be noted that in the existing preparation process of covered wire, the outside of the hollow spindle is usually used to install and fix the spindle tube with the outer wrapping yarn wound on it, and the hollow tube inside the hollow spindle is used to accommodate the core yarn. When the hollow spindle is in a rotating state, the core yarn in the internal hollow tube only moves upward or downward, and the outer wrapping yarn unwound from the spindle tube is directly spirally wrapped around the surface of the core yarn when it meets the core yarn.

[0030] The preparation device of the knot-free covered wire provided by the present invention directly uses the spindle tube arranged outside the first hollow spindle to wind the core yarn, and through its own rotation, the core yarn not only performs a simple conveying movement during the unwinding process, but also realizes its own real-time twisting movement. After the twisted core yarn is conveyed to the hollow tube of the second hollow spindle, it is combined with the outer wrapping yarn unwound from the surface of the second spindle tube, and the outer wrapping yarn is wrapped around the surface of the core yarn to form a knot-free covered wire.

[0031] The first hollow spindle rotates one circle, that is, a twist is applied to the core yarn unwound from the first spindle tube.

[0032] Preferably, the preparation device further comprises a core yarn guide ring 14 and an outer wrapping yarn guide ring 15. In this case, the schematic diagram of the preparation device of the kink-free covered wire provided by the present invention is as follows: Figure 5 shown.

[0033] The core yarn guide ring 14 is arranged between the tension assembly 4 and the second hollow spindle 5, and after the core yarn 3 is output from the tension assembly 4, it enters the hollow pipe of the second hollow spindle 5 through the core yarn guide ring 14, and the core yarn wire ring 14 is arranged at one end of the first telescopic rod 16 arranged transversely, and the core yarn wire ring 14 adjusts the output route of the core yarn 3 to coincide with the center line of the hollow pipe of the second hollow spindle 5 by controlling the telescopic state of the first telescopic rod 16; The outer wrapped yarn guide ring 15 is fixedly connected to one side of the upper surface of the second spindle tube 6 through a longitudinally arranged second telescopic rod 17, and the outer wrapped yarn guide ring 15 rotates synchronously with the second spindle tube 6. After the outer wrapped yarn 7 is unwound and output from the second spindle tube 6, it enters the meeting yarn guide hook 8 through the outer wrapped yarn guide ring 15. The outer wrapped yarn guide ring 15 controls the telescopic state of the second telescopic rod 17 to adjust the outer wrapped yarn 7 to be spirally wrapped around the surface of the core yarn 3 at a preset angle.

[0034] For core yarns of different specifications, it is difficult to ensure that the output route of the core yarn coincides with the center line of the hollow tube of the second hollow spindle after the tension component outputs the core yarn, thereby affecting the wrapping angle of the subsequent outer wrapping yarn on the core yarn, making the wrapping twist of the outer wrapping yarn in the covered wire unable to meet the expected standard and affecting the balance of its internal anti-twist torque. The present invention adjusts the corresponding positions of the core yarn guide ring and the second hollow spindle by controlling the telescopic state of the first telescopic rod, so that the output route of the core yarn stably coincides with the center line of the hollow tube of the second hollow spindle.

[0035] In addition, when the outer wrapping yarn is directly wrapped around the surface of the core yarn after being unwound from the second spindle tube, as the outer wrapping yarn is continuously unwound on the second spindle tube, the winding diameter of the outer wrapping yarn on the second spindle tube is continuously shortened, causing the wrapping angle of the outer wrapping yarn on the surface of the core yarn to gradually decrease. This will also make the wrapping twist of the outer wrapping yarn in the covered wire unable to meet the expected standard and affect the balance of its internal anti-twist torque. The present invention also adopts a setting in which an outer wrapping yarn guide ring is fixedly connected to one side of the upper surface of the second spindle tube through a longitudinally arranged second telescopic rod, so that after the outer wrapping yarn is unwound from the second spindle tube, it is wrapped around the surface of the core yarn at a fixed wrapping angle through the guiding action of the outer wrapping yarn guide ring.

[0036] The present invention can ensure the wrapping quality of the covered wire by setting the core yarn guide ring and the outer wrapping yarn guide ring, and avoid the situation that the anti-twist torque generated by the outer wrapping yarn wrapping cannot be balanced with the anti-twist torque generated by the core yarn self-twisting due to the low wrapping quality.

[0037] Furthermore, the circular sizes of the core yarn guide ring and the outer wrapping yarn guide ring can also be adjusted according to the diameters of the core yarn and the outer wrapping yarn, so that each guide ring matches the corresponding yarn diameter, thereby stabilizing the conveying routes of the core yarn and the outer wrapping yarn before wrapping.

[0038] Preferably, the preparation device further comprises an identification component. In this case, the device schematic diagram of the preparation device of the kink-free covered wire provided by the present invention is as follows: Figure 6 As shown: Wherein, the identification component includes a first camera 18 matching the position of the first ingot tube 2 and a second camera 19 matching the position of the second ingot tube 6; The first hollow ingot 1 is transmission-connected to the first power mechanism 20, and the second hollow ingot 5 is transmission-connected to the second power mechanism 21; The first camera 18 and the first power mechanism 20 are respectively connected to the console 22 by electrical signals, and the second camera 19 and the second power mechanism 21 are respectively connected to the console 22 by electrical signals; The first camera 18 is used to capture the core yarn image on the surface of the first spindle tube 2 and send it to the control console 22; the second camera 19 is used to capture the outer wrapping yarn image on the surface of the second spindle tube 6 and send it to the control console 22; the control console 22 is used to determine the core yarn material corresponding to the core yarn 3 according to the core yarn image, and determine the outer wrapping yarn material corresponding to the outer wrapping yarn 7 according to the outer wrapping yarn image, and then adjust the respective rotation states of the first power mechanism 20 and the second power mechanism 21 according to the preset twisting relationship corresponding to the core yarn material and the outer wrapping yarn material, so that the real-time twisting twist of the core yarn 3 matches the wrapping twist of the outer wrapping yarn 7 to offset the mutual anti-twist torque.

[0039] In a feasible embodiment, the first power mechanism and the second power mechanism can be drive motors, and the transmission connection between the first power mechanism and the second power mechanism and the first spindle tube and the second spindle tube can be connected by spindle belt transmission. Since the first hollow spindle and the second hollow spindle are driven by different power mechanisms, the control console can adjust the rotation speed of the first hollow spindle and the second hollow spindle respectively through the first power mechanism and the second power mechanism: adjusting the rotation speed of the first hollow spindle can change the twist of the core yarn itself, and the twist of the core yarn (twist / m) = the rotation speed of the first hollow spindle (rev / min) / the output line speed of the yarn guide roller (m / min); adjusting the rotation speed of the second hollow spindle can change the wrapping twist of the outer wrapped yarn, and the wrapping twist (twist / m) = the rotation speed of the second hollow spindle (rev / min) / the output line speed of the yarn guide roller (m / min).

[0040] The embodiment of the present invention can identify and regulate the twist relationship between the core yarn and the wrapped yarn in real time through the setting of the identification component, so as to meet the stable production operation requirements in the scenario of frequent replacement of different yarn materials to prepare kink-free covered wires, and avoid production accidents of kink-free covered wires caused by manual replacement of yarns and operations; moreover, the production data of the preparation of kink-free covered wires by each yarn combination can be encrypted and stored in the console, so as to avoid leakage of production data caused by the flow of staff, realize the automatic, continuous and stable production of kink-free covered wires, and protect the production data at the same time.

[0041] Preferably, the console directly identifies the yarn materials corresponding to the core yarn and the outer wrapped yarn according to the core yarn image and the outer wrapped yarn image; or, A yarn label corresponding to the core yarn is fixed at a preset position of the first spindle tube, and a yarn label corresponding to the outer wrapping yarn is fixed at a preset position of the second spindle tube. The console determines the yarn materials corresponding to the core yarn and the outer wrapping yarn according to the yarn labels included in the core yarn image and the outer wrapping yarn image.

[0042] It should be noted that the yarn recognition neural network model can be established and trained by feeding a large number of yarn images and corresponding yarn material labels. The console can directly identify the yarn materials corresponding to the core yarn and the outer winding yarn according to the core yarn image and the outer winding yarn image through the trained yarn recognition neural network model; wherein, the console identifies the image taken by the first camera as the core yarn image, and identifies the image taken by the second camera as the outer winding yarn image.

[0043] The yarn label is a label that the staff pre-sets on the spindle tube in the form of a mark according to the type of yarn wound on the spindle tube. The mark can be in the form of text, images, numbers, QR codes and other symbols with identification functions. The console can pre-store the correspondence between each yarn label and the yarn material.

[0044] Preferably, the preset twisting relationship includes the corresponding real-time twisting twist and wrapping twist relationship when different core yarn materials and different outer wrapping yarn materials are used to achieve knot-free preparation of the covered wire.

[0045] The core yarn and the outer wrapped yarn have different specifications and parameters, and the outer wrapped yarn has different wrapping twists. The core yarn twisting twists required to achieve "twist-free" covered wires are also different. Therefore, given the types of outer wrapped yarn and core yarn, and the outer wrapped yarn wrapping twists, the core yarn twisting twist can be determined by experiment, that is, twisting the core yarn with different twists, and testing the kink index of the covered wire under different core yarn twists. For example, when the kink index of the covered wire reaches ≤10 twists / m, the core yarn twisting twist at this time can be used as the core yarn twisting twist matching the given conditions.

[0046] Through a large number of experimental tests, the staff can obtain the real-time twisting twist and wrapping twist relationship corresponding to different core yarn materials and different outer wrapping yarn materials when realizing the knot-free preparation of the covered wire, and add these corresponding relationships into the preset twisting relationship and store them in the console.

[0047] Preferably, when the core yarn is a short fiber core yarn, the rotation direction of the first spindle tube is the same as the original twisting direction of the core yarn.

[0048] Staple core yarn is a yarn made by twisting short fibers, such as cotton yarn, linen yarn, wool yarn, chemical fiber staple yarn and various short fiber blended yarns. When the core yarn is a staple core yarn, the real-time twisting direction of the core yarn must be the same as the original twist direction of the core yarn. If the original twist of the core yarn is Z twist, then the real-time twisting of the core yarn must also be added with Z twist. If the original twist of the core yarn is S twist, then the real-time twisting of the core yarn must also be added with S twist. Otherwise, the real-time twisting direction of the core yarn is opposite to the original twist direction, which is actually the untwisting of the core yarn. The core yarn will also decrease in strength due to untwisting, resulting in the breakage of the core yarn.

[0049] It should be noted that the filament core yarn itself has good strength and will not break even if the original twist is untwisted, so the present application does not limit the real-time twisting direction of the filament core yarn.

[0050] In order to better illustrate the technical effect of the device for preparing a kink-free coated wire provided by the present invention, a method flow chart of a method for preparing a kink-free coated wire is shown as follows: Figure 7 As shown, the method for preparing the kink-free coated wire is applied to the above-mentioned device for preparing the kink-free coated wire, comprising: S10: After the first spindle tube wound with the core yarn is fixed to the first hollow spindle through the spindle cap, the first hollow spindle rotates and unwinds to output the core yarn upward, so that the core yarn is twisted in real time under the rotation of the first spindle tube, enters the hollow pipe inlet of the second hollow spindle through the tension component, and is then led out from the hollow pipe outlet of the second hollow spindle.

[0051] S20: After the second spindle tube wound with the outer wrapped yarn is fixed to the second hollow spindle through the spindle cap, the second hollow spindle is rotated and unwound to output the outer wrapped yarn upward, and the rotation direction of the first spindle tube is opposite to the rotation direction of the second spindle tube.

[0052] S30: After the core yarn led out from the outlet of the hollow pipe and the outer wrapping yarn unwound from the surface of the second spindle tube are combined at the upper joining yarn guide hook, the outer wrapping yarn is wrapped around the surface of the core yarn to form a knot-free covered wire, and the real-time twisting twist of the core yarn matches the wrapping twist of the outer wrapping yarn.

[0053] S40: The kink-free covered yarn is led upward through a yarn lead-in roller, and then guided by a yarn guide rod and a traverse yarn guide, and then wound on the surface of the yarn tube by a winding roller.

[0054] Preferably, after the tension of the core yarn in S10 is adjusted by the tension component, the preparation method further comprises: The output route of the core yarn is adjusted to coincide with the center line of the hollow pipe of the second hollow spindle by controlling the telescopic state of the first telescopic rod connected to the core yarn conductor ring; the core yarn guide ring is arranged between the tension assembly and the second hollow spindle, and after the core yarn is output from the tension assembly, it enters the hollow pipe of the second hollow spindle through the core yarn guide ring, and the core yarn conductor ring is arranged at one end of the first telescopic rod arranged transversely; After the second hollow spindle rotates and unwinds in S20 to output the outer wrapped yarn upward, the preparation method further includes: By controlling the telescopic state of the second telescopic rod connected to the outer wrapped yarn guide ring, the outer wrapped yarn is adjusted to be spirally wrapped around the core yarn surface at a preset angle; the outer wrapped yarn guide ring is fixedly connected to one side of the upper surface of the second spindle tube through the longitudinally arranged second telescopic rod, and the outer wrapped yarn guide ring rotates synchronously with the second spindle tube. After the outer wrapped yarn is unwound and output from the second spindle tube, it enters the meeting yarn guide hook through the outer wrapped yarn guide ring.

[0055] Preferably, when the first spindle tube wound with the core yarn is fixed to the first hollow spindle through a spindle cap, and the second spindle tube wound with the outer wrapped yarn is fixed to the second hollow spindle through a spindle cap, the preparation method further includes: Taking an image of the core yarn on the surface of the first spindle tube by a first camera matching the position of the first spindle tube and sending the image to a control console; Taking an image of the outer wrapped yarn on the surface of the second spindle tube by a second camera matched with the position of the second spindle tube and sending the image to the console; The control console determines the core yarn material corresponding to the core yarn according to the core yarn image, determines the outer wrapping yarn material corresponding to the outer wrapping yarn according to the outer wrapping yarn image, and then adjusts the rotation states of the first power mechanism and the second power mechanism respectively according to the preset twisting relationship corresponding to the core yarn material and the outer wrapping yarn material, so that the real-time twisting twist of the core yarn matches the wrapping twist of the outer wrapping yarn to offset the mutual anti-twist torque, and the first spindle tube hollow spindle is transmission connected to the first power mechanism, and the second hollow spindle is transmission connected to the second power mechanism.

[0056] Preferably, the console directly identifies the yarn materials corresponding to the core yarn and the outer wrapped yarn according to the core yarn image and the outer wrapped yarn image; or, A yarn label corresponding to the core yarn is fixed at a preset position of the first spindle tube, and a yarn label corresponding to the outer wrapping yarn is fixed at a preset position of the second spindle tube. The console determines the yarn materials corresponding to the core yarn and the outer wrapping yarn according to the yarn labels included in the core yarn image and the outer wrapping yarn image.

[0057] Preferably, the preset twisting relationship includes the corresponding real-time twisting twist and wrapping twist relationship when different core yarn materials and different outer wrapping yarn materials are used to achieve knot-free preparation of the covered wire.

[0058] Preferably, when the core yarn is a short fiber core yarn, the rotation direction of the first spindle tube is the same as the original twisting direction of the core yarn.

[0059] Furthermore, in order to further illustrate the benefits of the method and device for preparing a kink-free coated wire provided by the present invention, an embodiment of a single-package coated wire prepared by the method and device for preparing a kink-free coated wire provided by the present invention is shown as follows: The core yarn used in the embodiment is 150D / 48F blue-gray polyester DTY (low-elastic yarn), the outer wrapping yarn is 75D / 36F black polyester DTY, the wrapping twist is set to 500 twists / m, the second hollow spindle speed is set to 12000 rpm, the yarn delivery speed is 24 m / min, the wrapping twist direction is Z twist, and the wrapping twist = the second hollow spindle speed / the yarn delivery speed.

[0060] The spinning schemes corresponding to the embodiment are shown in Table 1, wherein the twisting degree of the core yarn = the rotation speed of the first hollow spindle / the yarn delivery speed; and the twisting direction of the first hollow spindle is S twist.

[0061] Spinning solutions First hollow ingot speed (rpm) Core yarn reverse twist (twist / m) 1 0 0 2 2400 100 3 4800 200 4 7200 300 5 9600 400 Table 1 The kink index of the covered yarn prepared by each spinning scheme was tested by the closed coil method: a 500 mm long covered yarn sample was taken, and the two ends were held and folded in half to prevent the yarn sample from rotating under the action of the anti-twist torque. The yarn sample twisted itself under the action of the anti-twist torque, and the number of self-twist twists on the 250 mm long yarn after folding was counted, and the kink index (twists / m) was calculated. The larger the number of self-twist twists, that is, the larger the kink index, the easier the yarn is to kink.

[0062] The schematic diagram of the morphology of the 500mm long yarn sample of the covered yarn spun by the five spinning schemes shown in Table 1 after folding and self-twisting (250mm) is as follows Figure 8 As shown, Figure 8 The five yarn samples from left to right correspond to the coated yarns prepared by spinning schemes 1-5. Figure 8 It can be seen that: when the core yarn is not reverse twisted (the leftmost yarn sample), the yarn kinks are serious; after the core yarn is reverse twisted, the kinks of the covered yarn are reduced, and as the twist of the core yarn reverse twist increases, the kinks become less and less.

[0063] Furthermore, the present invention tests the kink index of the coated wire prepared by the spinning scheme shown in Table 1, and some of the test results are shown in Table 2, wherein the unit corresponding to each kink index is (twists / meter).

[0064] Spinning Solution 1 Spinning Solution 2 Spinning Solution 3 Spinning Solution 4 Spinning Solution 5 The first test of the kink index 142.0 116.4 52.0 31.2 14.0 Second test of kink index 136.4 102.4 60.0 38.4 14.0 The third test of the kink index 139.6 140.0 49.6 30.8 6.0 Test 4: Kink Index 126.0 118.0 64.4 37.6 6.0 Test 5: Kink Index 139.2 135.6 70.8 37.6 14.0 Test 6: Kink Index 140.4 114.0 54.4 39.2 14.0 Test 7: Kink Index 146.4 108.4 67.6 27.6 10.0 8th Test Kink Index 136.0 98.4 73.2 36.4 10.0 Test 9: Kink Index 147.2 111.2 66.8 52.0 6.0 Test 10: Kink Index 148.0 119.2 84.8 40.0 22.0 Kink Index Mean 140.1 116.4 64.36 37.08 11.6 Table 2 According to Table 2, as the twisting twist of the core yarn increases, the kink index of the covered wire decreases; when the reverse twisting twist of the core yarn is 400 twists / m, the average kink index of the covered wire decreases from 140.1 twists / m to 11.6 twists / m. Obviously, the preparation method and device of the kink-free covered wire provided by the present invention can effectively reduce the kink phenomenon of the covered wire.

[0065] Compared with the prior art, the method and device for preparing a kink-free covered wire provided by the present invention have the following advantages: The method and device for preparing a kink-free covered wire provided by the present invention output the core yarn upward by rotating and unwinding the first hollow spindle, so that the core yarn is twisted in real time under the rotation of the first spindle tube, and directly enters the hollow pipe inlet of the second hollow spindle after the tension is adjusted by the tension component, and then is led out from the hollow pipe outlet of the second hollow spindle; then the second hollow spindle rotates and unwinds to output the outer wrapped yarn upward, and the rotation direction of the first spindle tube is opposite to that of the second spindle tube; the core yarn led out from the hollow pipe outlet is unwound on the surface of the second spindle tube After the output outer wrapping yarn is combined with the upper joining yarn guide hook, the outer wrapping yarn is wrapped around the surface of the core yarn to form a kink-free covered wire. The real-time twisting twist of the core yarn matches the wrapping twist of the outer wrapping yarn, thereby realizing the real-time twisting of the core yarn and the wrapping of the outer wrapping yarn in the preparation process of the covered wire. The twist directions of the core yarn twisting and the outer wrapping yarn wrapping are configured in opposite directions, and the anti-twist torque generated by the core yarn twisting again is used to offset the anti-twist torque generated by the outer wrapping yarn wrapping, thereby realizing the torque balance inside the covered wire and preparing a kink-free covered wire.

[0066] Although the present invention has been described in detail above by means of general description, specific implementation methods and tests, it is obvious to those skilled in the art that modifications or improvements can be made based on the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection claimed by the present invention.

[0067] Those skilled in the art will readily appreciate other embodiments of the invention after considering the specification and practicing the invention herein. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. It should be understood that the present invention is not limited to the precise structures and methods described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof.

Claims

1. A device for preparing a kink-free coated wire, characterized in that: The preparation device comprises a first hollow spindle mechanism, wherein the first hollow spindle mechanism comprises a first hollow spindle, wherein a first spindle tube is fixed to the first hollow spindle through a spindle cap, the first spindle tube rotates synchronously with the first hollow spindle, and a core yarn is wound on the surface of the first spindle tube; A tension assembly and a second hollow spindle mechanism are sequentially arranged above the first hollow spindle mechanism, the second hollow spindle mechanism comprises a second hollow spindle, a second spindle tube is fixed to the second hollow spindle through a spindle cap, the second spindle tube rotates synchronously with the second hollow spindle, and the rotation direction of the first spindle tube is opposite to that of the second spindle tube, and an outer wrapped yarn is wound on the surface of the second spindle tube; The core yarn unwound from the first spindle tube is twisted in real time under the rotation of the first spindle tube, and enters the hollow pipe entrance of the second hollow spindle after the tension is adjusted by the tension component, and then is led out from the hollow pipe exit of the second hollow spindle, and after being combined with the outer wrapping yarn unwound from the surface of the second spindle tube at the upper joining yarn guide hook, the outer wrapping yarn is wrapped around the surface of the core yarn to form a kink-free covered line, and the real-time twisting twist of the core yarn matches the wrapping twist of the outer wrapping yarn; A yarn guide roller, a yarn guide rod, a traverse yarn guide, a winding roller and a yarn tube are arranged in sequence above the converging yarn guide hook; the kink-free covered wire is led upwards through the yarn guide roller, and then guided by the yarn guide rod and the traverse yarn guide, and then wound on the surface of the yarn tube by the winding roller.

2. The preparation device according to claim 1, characterized in that: The preparation device also includes a core yarn guide ring and an outer wrapping yarn guide ring; The core yarn guide ring is arranged between the tension assembly and the second hollow spindle, and after the core yarn is output from the tension assembly, it enters the hollow pipe of the second hollow spindle through the core yarn guide ring, and the core yarn conductor ring is arranged at one end of the first telescopic rod arranged transversely, and the core yarn conductor ring adjusts the output route of the core yarn to coincide with the center line of the hollow pipe of the second hollow spindle by controlling the telescopic state of the first telescopic rod; The outer wrapped yarn guide ring is fixedly connected to one side of the upper surface of the second spindle tube through a second telescopic rod arranged longitudinally, and the outer wrapped yarn guide ring rotates synchronously with the second spindle tube. After the outer wrapped yarn is unwound and output from the second spindle tube, it enters the meeting yarn guide hook through the outer wrapped yarn guide ring. The outer wrapped yarn guide ring adjusts the outer wrapped yarn to be spirally wrapped around the core yarn surface at a preset angle by controlling the telescopic state of the second telescopic rod.

3. The preparation device according to claim 1, characterized in that: The preparation device also includes an identification component; Wherein, the identification component includes a first camera matching the first ingot tube position and a second camera matching the second ingot tube position; The first hollow ingot is transmission-connected to the first power mechanism, and the second hollow ingot is transmission-connected to the second power mechanism; The first camera and the first power mechanism are respectively connected to the control console by electrical signals, and the second camera and the second power mechanism are respectively connected to the control console by electrical signals; The first camera is used to capture the core yarn image on the surface of the first spindle tube and send it to the console; the second camera is used to capture the outer wrapping yarn image on the surface of the second spindle tube and send it to the console; the console is used to determine the core yarn material corresponding to the core yarn according to the core yarn image, determine the outer wrapping yarn material corresponding to the outer wrapping yarn according to the outer wrapping yarn image, and then adjust the respective rotation states of the first power mechanism and the second power mechanism according to the preset twisting relationship corresponding to the core yarn material and the outer wrapping yarn material, so that the real-time twisting twist of the core yarn matches the wrapping twist of the outer wrapping yarn to offset the mutual anti-twist torque.

4. The preparation device according to claim 3, characterized in that: The console directly identifies the yarn materials corresponding to the core yarn and the outer wrapped yarn according to the core yarn image and the outer wrapped yarn image; or, A yarn label corresponding to the core yarn is fixed at a preset position of the first spindle tube, and a yarn label corresponding to the outer wrapping yarn is fixed at a preset position of the second spindle tube. The console determines the yarn materials corresponding to the core yarn and the outer wrapping yarn according to the yarn labels included in the core yarn image and the outer wrapping yarn image.

5. The preparation device according to claim 3, characterized in that: The preset twisting relationship includes the corresponding real-time twisting twist and wrapping twist relationship when different core yarn materials and different outer wrapping yarn materials are used to realize the knot-free preparation of the covered wire.

6. A method for preparing a kink-free coated wire, characterized in that: The preparation method comprises: S10: After the first spindle tube wound with the core yarn is fixed to the first hollow spindle through the spindle cap, the first hollow spindle rotates and unwinds to output the core yarn upward, so that the core yarn is twisted in real time under the rotation of the first spindle tube, and enters the hollow pipe inlet of the second hollow spindle after the tension is adjusted by the tension component, and then is led out from the hollow pipe outlet of the second hollow spindle; S20: After the second spindle tube wound with the outer wrapped yarn is fixed to the second hollow spindle through a spindle cap, the second hollow spindle rotates and unwinds to output the outer wrapped yarn upward, and the rotation direction of the first spindle tube is opposite to the rotation direction of the second spindle tube; S30: after the core yarn led out of the hollow pipe outlet and the outer wrapping yarn unwound and outputted from the surface of the second spindle tube are combined at the upper joining yarn guide hook, the outer wrapping yarn is wrapped around the surface of the core yarn to form a kink-free covered yarn, and the real-time twisting twist of the core yarn matches the wrapping twist of the outer wrapping yarn; S40: The kink-free covered yarn is led upward through a yarn lead-in roller, and then guided by a yarn guide rod and a traverse yarn guide, and then wound on the surface of the yarn tube by a winding roller.

7. The preparation method according to claim 6, characterized in that: After the tension of the core yarn in S10 is adjusted by the tension component, the preparation method further includes: The output route of the core yarn is adjusted to coincide with the center line of the hollow pipe of the second hollow spindle by controlling the telescopic state of the first telescopic rod connected to the core yarn conductor ring; the core yarn guide ring is arranged between the tension assembly and the second hollow spindle, and after the core yarn is output from the tension assembly, it enters the hollow pipe of the second hollow spindle through the core yarn guide ring, and the core yarn conductor ring is arranged at one end of the first telescopic rod arranged transversely; After the second hollow spindle rotates and unwinds in S20 to output the outer wrapped yarn upward, the preparation method further includes: By controlling the telescopic state of the second telescopic rod connected to the outer wrapped yarn guide ring, the outer wrapped yarn is adjusted to be spirally wrapped around the core yarn surface at a preset angle; the outer wrapped yarn guide ring is fixedly connected to one side of the upper surface of the second spindle tube through the longitudinally arranged second telescopic rod, and the outer wrapped yarn guide ring rotates synchronously with the second spindle tube. After the outer wrapped yarn is unwound and output from the second spindle tube, it enters the meeting yarn guide hook through the outer wrapped yarn guide ring.

8. The preparation method according to claim 6, characterized in that: When the first spindle tube wound with the core yarn is fixed to the first hollow spindle through a spindle cap, and the second spindle tube wound with the outer wrapped yarn is fixed to the second hollow spindle through a spindle cap, the preparation method further includes: Taking an image of the core yarn on the surface of the first spindle tube by a first camera matching the position of the first spindle tube and sending the image to a control console; Taking an image of the outer wrapped yarn on the surface of the second spindle tube by a second camera matched with the position of the second spindle tube and sending the image to the console; The control console determines the core yarn material corresponding to the core yarn according to the core yarn image, determines the outer wrapping yarn material corresponding to the outer wrapping yarn according to the outer wrapping yarn image, and then adjusts the rotation states of the first power mechanism and the second power mechanism respectively according to the preset twisting relationship corresponding to the core yarn material and the outer wrapping yarn material, so that the real-time twisting twist of the core yarn matches the wrapping twist of the outer wrapping yarn to offset the mutual anti-twist torque, and the first spindle tube hollow spindle is transmission connected to the first power mechanism, and the second hollow spindle is transmission connected to the second power mechanism.

9. The preparation method according to claim 8, characterized in that: The console directly identifies the yarn materials corresponding to the core yarn and the outer wrapped yarn according to the core yarn image and the outer wrapped yarn image; or, A yarn label corresponding to the core yarn is fixed at a preset position of the first spindle tube, and a yarn label corresponding to the outer wrapping yarn is fixed at a preset position of the second spindle tube. The console determines the yarn materials corresponding to the core yarn and the outer wrapping yarn according to the yarn labels included in the core yarn image and the outer wrapping yarn image.

10. The preparation method according to claim 8, characterized in that: The preset twisting relationship includes the corresponding real-time twisting twist and wrapping twist relationship when different core yarn materials and different outer wrapping yarn materials are used to realize the knot-free preparation of the covered wire.

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