Tape yarn knitting mechanism

Abstract

The utility model discloses a tape yarn knitting mechanism, which belongs to the technical field of textile, and is characterized in that an existing tape yarn knitting device is improved, specifically, an automatic yarn twisting unit is additionally arranged in a knitting area, and meanwhile, an upper yarn guide unit and a lower yarn guide unit are respectively arranged on an upper yarn path and a lower yarn path of the knitting area. Whether the yarn breaking phenomenon occurs or not can be sensed in time through the additionally arranged upper yarn guide unit and the additionally arranged lower yarn guide unit, the yarn breaking end of an upper yarn path and the yarn breaking end of a lower yarn path can be automatically conveyed to the upper end of a needle shaft of a knitting area in a pneumatic mode through the automatic yarn twisting unit, and then broken threads are guided into a splicing groove of a yarn twister for splicing through manual assistance; namely, according to the scheme, the broken yarn ends of the upper yarn path and the lower tape yarn path can be automatically obtained in a pneumatic and tension sensing mode, the broken yarn is guided to the yarn twister to be twisted in a manual assistance mode, the broken ends do not need to be manually found, dependence on manpower is reduced, personal errors and potential safety hazards are reduced, and the production quality and efficiency of the yarn are improved.

Description

Technical Field

[0001] This utility model belongs to the field of textile technology, and in particular relates to a ribbon yarn weaving mechanism. Background Technology

[0002] In recent years, ribbon yarn woven from small needle tubes has gradually become a new type of fancy yarn, evolving into core-spun ribbon yarn, slub ribbon yarn, spiral ribbon yarn, sprayed ribbon yarn, eyelash ribbon yarn, etc. Ribbon yarn has advantages such as being lightweight and fluffy, having a good hand feel, clear fabric texture, good drape, as well as short production process and low cost.

[0003] A ribbon, also known as a ribbon yarn, is a spiral structure formed by continuously connected coils in a mesh-like form. Ribbon yarn can be categorized into weft-knitted and warp-knitted ribbons based on the type of coils used. Weft-knitted ribbon yarn is woven using a miniature weft circular knitting machine called a cylinder knitting machine. The cylinder knitting machine consists of components such as a latch needle, cylinder, cam, pulley, nut, connecting plate, and screws. Its knitting principle is similar to that of a hosiery knitting machine. The cylinder knitting machine has a smaller cylinder, typically with 3-12 needle slots, and can hold 3-12 knitting needles. Warp-knitted ribbon yarn can be woven using a warp knitting machine. Ribbon yarn has higher strength than Siro yarn and double-ply yarn, and its mesh structure makes the yarn appear more fluffy. Therefore, the ultra-fine ribbon yarn woven by the ribbon knitting machine has a unique yarn structure, allowing for the design of novel, high-end fabrics.

[0004] In the production and processing stage, when the yarn breaks during the weaving of the ribbon yarn, or when two ribbon yarns are joined together, the ribbon yarn needs to be knotted. At present, the knotting of the ribbon yarn is mostly done by manually taking out the broken end and putting it into an air splicer for knotting. This has the following disadvantages: (1) It requires manual searching for the broken end after stopping the machine, which reduces the overall production efficiency; (2) It requires high technical skills from personnel, resulting in high personnel costs; (3) It poses a great safety hazard.

[0005] Based on the above analysis, this application proposes a ribbon yarn weaving mechanism that can automatically acquire broken yarn ends and feed them into the twister, so as to improve the quality and production efficiency of the ribbon yarn. Utility Model Content

[0006] The purpose of this invention is to provide a ribbon yarn weaving mechanism that uses pneumatic and tension sensing methods to automatically acquire broken yarn ends on the upper and lower ribbon yarn paths and manually assist in placing the broken yarn into the twister for twisting. This eliminates the need for manual searching for broken ends, reducing reliance on manual labor, thereby reducing human error and safety hazards. At the same time, it also improves the production quality and efficiency of yarn.

[0007] To address the aforementioned issues, this solution provides a ribbon yarn weaving mechanism, comprising a frame, a weaving unit and a control unit, the weaving unit including a cylinder assembly and a drive unit, and a yarn guiding unit and an automatic yarn twisting unit on the frame. The yarn guiding unit includes an upper yarn guiding unit and a lower yarn guiding unit distributed at the upper and lower ends of the cylinder assembly. The upper yarn guiding unit includes a first tension sensor and a closed yarn guiding channel, and the lower yarn guiding unit includes a second tension sensor and a take-up assembly. The automatic yarn twisting unit includes a yarn suction assembly, a splicer, and a yarn blowing assembly. The yarn suction assembly and splicer are located on the side of the cylinder assembly near the upper end and communicate with the closed yarn guiding channel. The yarn blowing assembly is located at the lower end of the cylinder assembly to blow the broken yarn end of the lower yarn path to the yarn suction assembly side.

[0008] As a preferred embodiment of this application: the closed yarn guide channel includes a yarn guide tube and a tapered yarn guide cover. The yarn guide tube is disposed upstream of the tapered yarn guide cover and located between the first tension sensor and the tapered yarn guide cover. The tapered yarn guide cover is disposed on the knitting unit. The closed yarn guide channel is used to guide the knitting bundle 37 to the knitting unit for knitting. At the same time, it is used to provide an airflow channel for the yarn suction assembly to suck up the broken ends of the upper and lower yarn paths.

[0009] As a preferred embodiment of this application: the yarn suction assembly includes a main suction pipe and at least two suction branch pipes, one end of the two suction branch pipes is connected to the main suction pipe and the other end is connected to the tapered yarn guide cover, and the two suction branch pipes are respectively located diagonally above and diagonally below the splicer.

[0010] As a preferred embodiment of this application: the yarn blowing assembly includes at least one nozzle assembly, which is a double-tube structure including an outer tube and an inner tube. A sealing gap is formed between the outer tube and the inner tube, which serves as an airflow channel. The inner tube serves as a yarn passage channel, and a spiral upward air passage is provided around the outer wall of the inner tube. The gas in the airflow channel can enter the yarn passage channel through the air passage and blow the broken yarn end in the needle cylinder assembly to the yarn suction assembly side.

[0011] As a preferred embodiment of this application: the driving unit includes a needle shaft drive unit and an outer sleeve drive unit. Meanwhile, the needle cylinder assembly includes a needle shaft, a yarn guide frame, and a needle cylinder outer sleeve. The needle shaft drive unit is connected to the needle shaft to drive the needle shaft to rotate. The yarn guide frame is integrally connected to the needle cylinder outer sleeve and covers the outside of the needle shaft. The outer sleeve drive unit is connected to the needle cylinder outer sleeve to drive the needle cylinder outer sleeve and the yarn guide frame to rotate synchronously relative to the needle shaft.

[0012] As a preferred embodiment of this application: the outer sleeve transmission unit includes a small pulley, a large pulley and a servo motor II. The large pulley is integrally connected to the syringe outer sleeve, and the large pulley and the small pulley are connected by a transmission belt. The servo motor II can drive the large pulley and the small pulley to rotate through the transmission belt, thereby driving the syringe outer sleeve to rotate.

[0013] As a preferred embodiment of this application: the nozzle assembly comprises two stages, which are axially connected in series; or, the two stages of the nozzle assembly are axially connected in series via a needle shaft drive unit; when the two stages of the nozzle assembly are axially connected in series via a needle shaft drive unit, the outer sleeve and the inner sleeve can be rotatably sleeved together, and the inner sleeve can rotate synchronously with the needle shaft.

[0014] As a preferred embodiment of this application: the needle shaft transmission unit includes a worm gear, a worm, and a drive motor, and the inner sleeves of the two-stage nozzle assemblies are respectively fixedly connected to the worm gear and thus rotate synchronously with the needle shaft.

[0015] As a preferred embodiment of this application: the second tension sensor includes a lower yarn tensioner I and a lower yarn tensioner II, and the take-up assembly includes at least a guide roller, a pressure roller and a take-up shaft, with the lower yarn tensioner I and the lower yarn tensioner II respectively disposed upstream and downstream of the pressure roller.

[0016] Compared with existing technologies, the advantages of this application are:

[0017] This solution improves upon existing ribbon yarn weaving devices. Specifically, an automatic twisting unit is added to the weaving area. Additionally, upper and lower yarn guide units are installed on the upper and lower yarn paths of the weaving area, respectively. These units can promptly detect yarn breaks. The automatic twisting unit pneumatically transports the broken ends of the upper and lower yarn paths to the upper end of the needle shaft in the weaving area. Then, with manual assistance, the broken yarn is guided into the twisting groove of the twister for twisting. In other words, this solution uses pneumatic and tension sensing to automatically detect broken yarn ends on the upper and lower ribbon yarn paths and manually guides them to the twister for twisting, eliminating the need for manual searching of broken ends. This reduces reliance on manual labor, thereby reducing human error and safety hazards, while also improving yarn production quality and efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the ribbon yarn weaving mechanism provided by this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the yarn blowing assembly provided by this utility model;

[0020] Figures 3a-3f This is a schematic diagram of the yarn breakage splicing process provided by this utility model;

[0021] Figures 4a-4c This is a schematic diagram of the composite ribbon yarn breakage splicing process provided by this utility model;

[0022] Figures 5a-5c This is a schematic diagram of the twisting process of broken yarn in the core-spun tape provided by this utility model.

[0023] Figure Labels

[0024] 1-Wrapping shaft, 2-Front support bracket, 3-Non-powered yarn guide roller, 4-Yarn guide hook, 5-Lower yarn tensioner II, 6-Servo motor I, 7-Guide roller, 8-Non-powered pressure roller, 9-Hook, 10-Lower yarn tensioner I, 11-Belt yarn, 12-Sealing ring, 14-Nozzle fixing rod, 15-Arch-shaped plate, 16-Stepper motor, 17-Coupling, 18-Support, 19-Worm gear, 20-Worm wheel, 21-Outer sleeve, 22-Inner sleeve, 23-Air passage, 25-Air distribution valve, 26-Middle support plate, 27-Needle cylinder outer sleeve, 30-Yarn guide ring frame, 31-Front cover, 32-Needle shaft, 33-Sleeve opening, 34- Splicer, 35-Rear cover, 36-Conical yarn guide cover, 37-Braided yarn harness, 38-Suction pipe, 39-Straight yarn guide pipe, 41-T-shaped yarn guide pipe, 42-Upper bracket, 43-Upper crossbeam II, 44-First tension sensor, 45-Upper crossbeam I, 46-Rear bracket, 47-Braided yarn, 48-Spindle, 49-Braided yarn, 50-Yarn bobbin, 52-Suction branch pipe fixing bracket, 55-Upper support plate, 58-Main suction pipe fixing bracket, 59-Suction main pipe, 60-Large pulley, 61-Small pulley, 62-Servo motor II, 63-Compressor cylinder, 64-Lower support plate, 65-Base plate, 66-Blowing assembly. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of the present invention.

[0026] This embodiment provides a ribbon yarn weaving mechanism, see [link / reference] Figure 1-2 As shown, the ribbon yarn weaving mechanism includes a frame. In this embodiment, the frame is composed of a front support 2, an upper support 42, an upper cross frame II 43, an upper cross frame I 45, a rear support 46, an upper support plate 55, a middle support plate 26, a lower support plate 64, and a base plate 65. The frame and plates are connected together by bolts or welding to provide support.

[0027] The frame is equipped with a weaving unit, a control unit, a yarn guiding unit, and an automatic yarn twisting unit.

[0028] The knitting unit consists of a cylinder assembly and a drive unit. The cylinder assembly can be a conventional structure, fixed to the front end of the central support plate 26 via a bearing assembly. Specifically, the cylinder assembly includes a cylinder sleeve 27, an upper cam, a lower cam, a yarn guide frame 30, and a needle shaft 32. The cylinder sleeve 27 and the yarn guide frame 30 are integrally connected and cover the outside of the needle shaft 32. The cams are fixed to the inner wall of the cylinder sleeve 27 and rotate with it. The gap between the upper and lower cams forms the needle heel track (spatial arc) of the knitting needle. The knitting needle continuously rises and falls under the push of the upper and lower cams to knit. The cylinder sleeve 27 is fitted over the outside of the needle shaft 32. Understandably, depending on the knitting requirements, the cylinder sleeve 27 can rotate synchronously with the needle shaft 32 or asynchronously. In this embodiment, the cylinder sleeve 27 and the needle shaft 32 preferably rotate asynchronously, controlled by different drive units. Specifically, the drive unit includes a needle shaft drive unit and a sleeve drive unit. The shaft drive unit is connected to the needle shaft 32 to drive the needle shaft 32 to rotate, thereby dynamically changing the needle rail angle. The outer sleeve drive unit is connected to the needle cylinder outer sleeve 27 to drive the needle cylinder outer sleeve 27 and the yarn guide frame 30 to rotate synchronously relative to the needle shaft 32. In this embodiment, the needle shaft drive unit is set below the needle shaft 32 through the bow plate 15, and it includes a worm wheel 20, a worm 19 and a drive motor. The worm 19 meshes with the worm wheel 20, and the worm 19 is connected to the drive shaft of the drive motor through the coupling 17 and the support 18. In this embodiment, the drive motor is preferably a stepper motor 16. The outer sleeve drive unit includes a small pulley 61, a large pulley 60 and a servo motor II 62. The large pulley 60 is integrally connected to the needle cylinder outer sleeve 27, and the large pulley 60 and the small pulley 61 are connected by a transmission belt. The servo motor II 62 can drive the large pulley 60 and the small pulley 61 to rotate through the transmission belt, thereby driving the needle cylinder outer sleeve 27 and the yarn guide frame 30 to rotate synchronously.

[0029] The yarn guiding unit includes an upper yarn guiding unit and a lower yarn guiding unit distributed at the upper and lower ends of the needle shaft 32. The upper yarn guiding unit includes a first tension sensor 44 and a closed yarn guiding channel. The knitting bundle 37 passes through the first tension sensor 44, which identifies yarn defects and tension in the upper yarn path of the knitting bundle 37. The closed yarn guiding channel guides the knitting bundle 37 to the upper end of the needle shaft 32 of the knitting unit for knitting. It should be noted that the knitting bundle 37 can be a single knitting yarn 49, used to knit ordinary ribbon yarn, or... The composite yarn bundle of braided filament 47 and braided yarn 49 is used to braid composite ribbon yarn and core-spun ribbon yarn. In this embodiment, the composite yarn bundle of braided filament 47 and braided yarn 49 is preferred, depending on the type of ribbon yarn being braided. The lower yarn guide unit includes a second tension sensor and a winding assembly. The second tension sensor is used to identify the tension of the lower yarn ribbon yarn 11, and the winding assembly is used to wind the braided ribbon yarn 11. Specifically, the ribbon yarn 11 led out from the lower end of the needle shaft 32 passes through the second tension sensor and is wound into a cylinder by the winding assembly.

[0030] The automatic yarn twisting unit includes a yarn suction assembly, a twister 34, and a yarn blowing assembly 66. The yarn suction assembly and the twister 34 are located on the side of the cylinder assembly near the upper end and are connected to the closed yarn guiding channel in the upper yarn guiding unit. The closed yarn guiding channel provides an airflow channel for the yarn suction assembly to suck up the broken ends of the upper and lower yarn paths, eliminating the need for manual searching for the broken ends. The yarn blowing assembly 66 is located at the lower end of the cylinder assembly to blow the broken ends of the lower yarn path located in the needle shaft 32 to the side of the yarn suction assembly, and then use the yarn suction assembly to suck up the broken ends, avoiding the drawbacks of manually searching for the broken ends. It is understood that the yarn suction assembly and the yarn blowing assembly 66 should be connected to air pump pipelines respectively. The air pump pipelines can be the same group or different groups. In this embodiment, the same air pump pipeline is preferred, and an air distribution valve 25 and a compression cylinder 63 are provided in the air pump pipeline.

[0031] The control unit is electrically connected to each electrical component in the knitting mechanism and can control the automatic operation of the entire knitting mechanism. In this embodiment, the control unit is preferably a conventional controller, so its structure and control principle will not be described in detail.

[0032] In use, the braided yarn bundle 37 enters the braiding unit through the first tension sensor 44 and the closed yarn guide channel for braiding. The completed braided yarn 11 is then wound up by the take-up assembly after passing through the second tension sensor. When a yarn breakage occurs, the control unit drives the take-up assembly and yarn bobbin 50 to stop or reverse a certain angle based on the stress change signals sensed by the first and second tension sensors (the purpose of reversing is to provide sufficient length for the broken yarn end, making it easier for the yarn suction assembly to pick up the broken yarn end and reduce stress interference). At the same time, the distribution air valve 25 is activated to ensure that both the yarn suction assembly and the yarn blowing assembly 66 are connected to the air pump pipeline. At this time, the yarn suction assembly, in conjunction with the closed yarn guide channel, first picks up the upper yarn of the braided yarn bundle 37. The broken yarn end is manually or directly sucked into the splicing groove of the splicer 34. Then, under the airflow of the yarn blowing assembly 66, the broken yarn end of the ribbon yarn 11 in the lower yarn path is blown to the upper port of the needle shaft 32. The yarn suction assembly and the closed yarn guide channel are used to suck out a certain length of the broken yarn end of the ribbon yarn 11 from the needle shaft 32 (the suction margin comes from the yarn path adjustment). Since the ribbon yarn 11 cannot be directly spliced ​​with the braided yarn bundle 37, a small amount of the loops of the ribbon yarn 11 are manually extracted to form the braided yarn bundle 37, and the disassembled braided yarn bundle 37 is guided into the splicing groove. The splicer 34 is turned on to complete the splicing of the yarn. The yarn after splicing is put back into the normal weaving process.

[0033] In summary, the existing ribbon yarn weaving device has been improved. Specifically, an automatic twisting unit has been added to the weaving area. Additionally, upper and lower yarn guide units have been installed on the upper and lower yarn paths of the weaving area, respectively. Tension sensors in these units can promptly detect yarn breaks. The automatic twisting unit pneumatically transports the broken ends of the upper and lower yarn paths to the needle shaft 32 of the weaving unit. Then, manual assistance is provided to guide the broken ends into the twisting groove of the twister for twisting. In other words, this solution uses pneumatic and tension sensing methods to automatically detect broken ends in the upper and lower ribbon yarn paths and manually guides them to the twister for twisting. This means that in this solution, the operator only needs to guide the broken yarn to the twisting groove of the twister, eliminating the need for manual searching for the broken ends, thus reducing reliance on manual labor, minimizing human error and safety hazards, and improving yarn production quality and efficiency.

[0034] As a preferred embodiment, the closed yarn guide channel includes a yarn guide tube and a tapered yarn guide cover 36. The yarn guide tube is formed by connecting a T-shaped yarn guide tube 41 and a straight yarn guide tube 39 in series. The yarn guide tube is located upstream of the tapered yarn guide cover 36 and between the first tension sensor 44 and the tapered yarn guide cover 36. The tapered yarn guide cover 36 covers the knitting unit. This closed yarn guide channel is used to guide the knitting bundle 37 to the knitting unit for knitting, and at the same time, it provides a closed airflow channel for the yarn suction assembly to suck up the yarn. The broken yarn end of the path; In this embodiment, the tapered yarn guide cover 36 is preferably composed of a front cover 31 and a rear cover 35 in the shape of a clamp, and the splicer 34 is fixed on the upper bracket 42 and at least the splicing groove of the splicer 34 is located in the cover body composed of the front cover and the rear cover; In this embodiment, it can be understood that the diameter of the yarn guide tube of the closed yarn guide channel should be much smaller than the diameter of the cone tip (the position with the largest diameter) of the tapered yarn guide cover 36, so as to ensure that the braided yarn is transmitted normally, thereby reducing the overall volume and weight of the mechanism.

[0035] As a preferred embodiment, the yarn suction assembly includes a main suction pipe 59 and at least two suction branch pipes. One end of the two suction branch pipes is connected to the main suction pipe 59, and the other end is connected to the tapered yarn guide cover 36. The two suction branch pipes are located obliquely above and obliquely below the splicer 34, respectively, to facilitate the suction of broken yarn ends from the upper and lower yarn paths.

[0036] Specifically, in this embodiment, the main suction pipe 59 is mounted on the frame via the main suction pipe fixing bracket 58. The main suction pipe 59 is connected to a negative pressure fan and can provide negative pressure to the suction branch pipes. In this embodiment, it is preferred that there are two suction branch pipes, which are respectively set above and below the splicer 34. The suction branch pipe above is used to pick up the broken yarn ends of the upper yarn path, and the suction branch pipe below is used to pick up the broken yarn ends of the lower yarn path. It can be understood that the suction branch pipe below should be used in conjunction with the yarn blowing assembly 66. Only when the yarn blowing assembly 66 blows the broken yarn end of the lower yarn path to the designated area or position of the weaving unit can the suction branch pipe play the role of picking up the broken yarn.

[0037] In this embodiment, the suction branch pipe is composed of a sleeve opening 33 and a suction pipe 38, etc., and is fixed on the machine frame by a suction branch pipe fixing bracket 52. The sleeve opening 33 is connected to the closed yarn guide channel.

[0038] As a preferred embodiment, the yarn blowing assembly 66 includes at least one nozzle assembly, which is fixed to the front support by a nozzle fixing rod 14. This nozzle assembly is a double-sleeve structure comprising an outer sleeve 21 and an inner sleeve 22. Figure 2 As shown, a sealing gap is formed between the outer sleeve 21 and the inner sleeve 22 by a sealing ring 12. This sealing gap serves as an airflow channel, and the inner sleeve 22 serves as a yarn passage channel. The yarn 11 at the lower end of the needle shaft 32 is wound up by the winding assembly through this yarn passage channel. At the same time, a spiral upward air passage 23 is provided around the outer wall of the inner sleeve 22. In use, external airflow enters the airflow channel. Since the airflow channel is a sealed gap, the airflow will enter the yarn passage channel through the air passage 23 and spiral upward, and then enter the needle shaft 32 of the needle cylinder assembly to blow the broken yarn end towards the upper end of the needle cylinder assembly.

[0039] In a preferred embodiment, the nozzle assembly comprises two stages, which are directly connected in axial direction; or, the two stages are connected in axial direction via a needle shaft drive unit. When the two stages are connected in axial direction via the needle shaft drive unit, the outer sleeve 21 and the inner sleeve 22 can be rotatably fitted together, and the inner sleeve 22 can rotate synchronously with the needle shaft 32. This embodiment preferably adopts the latter, such as... Figure 2 As shown, the purpose of designing the nozzle assembly as a two-stage assembly in this embodiment is to enhance the blowing intensity. It is understood that the two-stage nozzle assembly should be selectable for use.

[0040] As a preferred embodiment, the second tension sensor includes a lower yarn tensioner I10 and a lower yarn tensioner II5. The winding assembly preferably consists of a non-powered guide roller 3, a guide hook 4, a self-pressing roller, and a winding shaft 1. The self-pressing roller comprises a guide roller 7 and a non-powered pressure roller 8. The non-powered pressure roller 8 is installed in the groove of the hook 9 and presses the yarn 11 onto the guide roller 7 by its own weight. The guide roller 7 is driven to rotate by a servo motor I6, thereby pulling the yarn 11 downwards to wind onto the winding shaft 1. The purpose of designing two lower yarn tensioners in this embodiment is to improve the efficiency of picking up the broken ends of the lower yarn 11 and avoid stress interference.

[0041] This design's ribbon yarn weaving mechanism is suitable for weaving ribbon yarn 11, composite ribbon yarn 11, and core-spun ribbon yarn 11.

[0042] like Figures 3a-3f The diagram shown illustrates the process of splicing broken yarns in the ribbon yarn 11 (directly woven from braided yarn 49) provided in this embodiment. Specifically:

[0043] During the knitting process, when the knitting yarn 49 breaks, all units of the knitting needles are de-energized. In this embodiment, to reduce the accumulation of fly waste in the needle path of the needle shaft 32, the yarn suction assembly remains on. When the knitting yarn 49 breaks at the knitting opening (upper end of the needle shaft 32), the knitting yarn 49 detaches from the knitting needle, and the ribbon yarn 11 detaches from the knitting opening. Figure 3a ;

[0044] The suction force of the yarn suction assembly draws the braided yarn 49 to the head end of the splicer 34, see... Figure 3b ;

[0045] When the braided yarn 49 has no tension, the first tension sensor 44 on the upper yarn path detects a broken yarn. At this time, the control unit opens the air blowing circuit of the air distribution valve 25, and the airflow in the nozzle assembly pushes the broken end of the ribbon yarn 11 to the braiding opening. Simultaneously, under the sensing information of the lower yarn path tensioner I 10, its tension rod is controlled to rotate counterclockwise to provide excess ribbon yarn 11, allowing the ribbon yarn 11 to be ejected from the braiding opening. See Figure 3c ;

[0046] The front cover 31 of the closed yarn guide channel is manually opened, and a certain amount of yarn 11 is drawn into braided yarn 49. The disassembled braided yarn 49 and the broken braided yarn 49 are then adjusted into the air groove of the splicer 34. The splicer 34 is then started to splice the two sets of braided yarn 49. Figure 3d The 49-fold twist of the braided yarn is complete; see below. Figure 3e ;

[0047] The knitting yarn 49 is manually hung on the knitting needle. The worm gear 20 and worm shaft 19 assembly are activated, and the needle shaft 32 rotates to complete the initial loop formation. Then, the servo motor II is activated to begin knitting. See below. Figure 3f .

[0048] like Figures 4a-4c The diagram shown illustrates the yarn breakage and splicing process of the braided composite yarn 11 (woven from braided yarn 47 and braided yarn 49) provided in this embodiment. Figures 5a-5c The diagram shown is a schematic diagram of the yarn breakage splicing process of the core-spun ribbon yarn 11 (formed by the braiding filament 47 directly passing through the braiding structure during the weaving of the braiding yarn 49) provided in this embodiment. The specific yarn twisting process is the same as that of the ribbon yarn 11, and will not be described in detail here.

[0049] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various improvements without departing from this utility model, and these improvements should also be considered within the scope of protection of this utility model. These improvements will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of the claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A tape yarn braiding mechanism comprising a frame, a braiding unit and a control unit provided on the frame, the braiding unit comprising a needle cylinder assembly and a driving unit, characterized in that: The frame is also equipped with a yarn guiding unit and an automatic yarn twisting unit. The yarn guiding unit includes an upper yarn guiding unit and a lower yarn guiding unit distributed at the upper and lower ends of the cylinder assembly. The upper yarn guiding unit includes a first tension sensor and a closed yarn guiding channel, and the lower yarn guiding unit includes a second tension sensor and a take-up assembly. The automatic yarn twisting unit includes a yarn suction assembly, a splicer, and a yarn blowing assembly. The yarn suction assembly and the splicer are located on the side of the cylinder assembly near the upper end and communicate with the closed yarn guiding channel. The yarn blowing assembly is located at the lower end of the cylinder assembly to blow the broken yarn end of the lower yarn path to the side of the yarn suction assembly.

2. The strap braiding mechanism of claim 1, wherein: The closed yarn guide channel includes a yarn guide tube and a tapered yarn guide cover. The yarn guide tube is located upstream of the tapered yarn guide cover and between the first tension sensor and the tapered yarn guide cover. The tapered yarn guide cover is placed over the knitting unit. The closed yarn guide channel is used to guide the knitting bundle 37 to the knitting unit for knitting. At the same time, it is used to provide an airflow channel for the yarn suction assembly to suck up the broken ends of the upper and lower yarn paths.

3. The strap braiding mechanism of claim 2, wherein: The yarn suction assembly includes a main suction pipe and at least two suction branch pipes. One end of each of the two suction branch pipes is connected to the main suction pipe, and the other end is connected to the tapered yarn guide cover. The two suction branch pipes are located diagonally above and diagonally below the splicer, respectively.

4. The strap braiding mechanism of claim 1, wherein: The yarn blowing assembly includes at least one nozzle assembly, which is a double-tube structure comprising an outer tube and an inner tube. A sealing gap is formed between the outer tube and the inner tube, which serves as an airflow channel. The inner tube serves as a yarn passage channel, and a spiral upward air passage is provided around the outer wall of the inner tube. The gas in the airflow channel can enter the yarn passage channel through the air passage and blow the broken yarn end in the needle cylinder assembly to the yarn suction assembly side.

5. The strap inlaying mechanism of claim 4, wherein: The drive unit includes a needle shaft drive unit and an outer sleeve drive unit. Meanwhile, the cylinder assembly includes a needle shaft, a yarn guide frame, and a cylinder outer sleeve. The needle shaft drive unit is connected to the needle shaft to drive the needle shaft to rotate. The yarn guide frame is integrally connected to the cylinder outer sleeve and covers the outside of the needle shaft. The outer sleeve drive unit is connected to the cylinder outer sleeve to drive the cylinder outer sleeve and the yarn guide frame to rotate synchronously relative to the needle shaft.

6. The strap inlaying mechanism of claim 5, wherein: The outer sleeve transmission unit includes a small pulley, a large pulley, and a servo motor II. The large pulley is integrally connected to the syringe outer sleeve, and the large pulley and the small pulley are connected by a transmission belt. The servo motor II can drive the large pulley and the small pulley to rotate through the transmission belt, thereby driving the syringe outer sleeve to rotate.

7. The strap inlaying mechanism of claim 5, wherein: The nozzle assembly comprises two stages, which are axially connected in series; or, the two stages are axially connected in series via a needle shaft drive unit. When the two stages are axially connected in series via a needle shaft drive unit, the outer sleeve and the inner sleeve can be rotatably sleeved together, and the inner sleeve can rotate synchronously with the needle shaft.

8. The strap inlaying mechanism of claim 7, wherein: The needle shaft transmission unit includes a worm gear, a worm, and a drive motor. The inner sleeves of the two-stage nozzle assemblies are fixedly connected to the worm gear and rotate synchronously with the needle shaft.

9. The strap inlaying mechanism of claim 1, wherein: The second tension sensor includes a lower yarn tensioner I and a lower yarn tensioner II. Meanwhile, the take-up assembly includes at least a guide roller, a pressure roller, and a take-up shaft. The lower yarn tensioner I and the lower yarn tensioner II are respectively located upstream and downstream of the pressure roller.

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