Yarn beating device and yarn beating method for glass fibers

Abstract

The invention relates to the technical field of glass fiber production, in particular to a yarn beating device for glass fibers, which comprises a shell and further comprises a turbine hollow shaft, the turbine hollow shaft is rotatably arranged on the inner side of a yarn conveying channel, a center hole of the turbine hollow shaft is used for penetration of yarns, and an annular cutting edge is arranged at the front end of the turbine hollow shaft; the air jet hole is used for jetting high-speed air flow towards the turbine hollow shaft, the high-speed air flow is used for carrying out air-blowing stripping on defects on the surface of the yarn, and the turbine hollow shaft is driven by the high-speed air flow to rotate around the axis of the turbine hollow shaft, so that the annular cutting edge is used for cutting and stripping the defects on the surface of the yarn; through high-speed air flow jetting and a rotary annular cutting edge cutting structure, accurate stripping of defects on the surface of yarn is achieved, it is ensured that the breakage positions of the defects are controllable and not prone to remaining, and therefore the yarn beating effect and the product quality are improved, and the problem that an existing yarn beating device is poor in yarn beating effect is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of glass fiber production, and in particular to a yarn beating device and a yarn beating method for glass fiber. Background Art

[0002] Glass fiber is an important engineering material. Due to its excellent insulation, high temperature resistance, corrosion resistance and mechanical strength, it is widely used in fields such as construction, transportation, electronics, electrical, chemical industry, national defense, etc. The production process of glass fiber usually includes steps such as raw material melting, wire drawing, bunching, and twisting. In the production of glass fiber, the buncher is likely to cause defects such as flying filaments and fluff on the surface of the yarn, seriously affecting the product quality. Therefore, yarn beating has become a key link in glass fiber production. By beating the yarn, the defects on the surface of the glass fiber are removed, and the smoothness and uniformity of the yarn surface are improved.

[0003] Currently, the yarn beating technology for glass fiber yarn mainly relies on air flow impact or mechanical grinding. For example, the prior art (such as the invention patent with the application number CN200910165419.1) proposes a yarn beating machine, a yarn beating device and a yarn beating method for glass fiber: a device and method for peeling off the defects on the surface of the yarn by the negative pressure and blowing force generated by compressed air. During the process, the yarn needs to be introduced into the yarn inlet of the yarn beating machine, and the yarn is sucked in by the negative pressure formed by the high-speed air flow, and then pushed out by the blowing force to remove the surface defects.

[0004] When the above-mentioned yarn beating device is used for glass fiber yarn beating operation, the fracture position of the defects under the action of the air flow is uncontrollable, which is likely to cause some defects not to be completely peeled off, the yarn beating effect is poor, and the remaining flying filaments or fluff will still affect the strength and surface quality of the yarn in subsequent processing. Summary of the Invention

[0005] In view of this, the present invention provides a yarn beating device and a yarn beating method for glass fiber, which realize the precise peeling of the defects on the surface of the yarn through a high-speed air flow jet and a rotating annular edge cutting structure, ensure that the fracture position of the defects is controllable and not easy to remain, thereby improving the yarn beating effect and product quality, and solving the problem of poor yarn beating effect of the existing yarn beating device.

[0006] The technical solution of the present invention is realized as follows:

[0007] On the one hand, the present invention provides a yarn beating device for glass fiber, including a housing, and also including a turbine hollow shaft, wherein,

[0008] A yarn conveying channel is arranged on the housing, a jet port is arranged on the channel wall at the front end of the yarn conveying channel, and an air outlet is arranged on the channel wall at the rear end;

[0009] The turbine hollow shaft is rotatably arranged inside the yarn conveying channel, and its central hole is for the yarn to pass through. An annular cutting edge is provided at the front end of the turbine hollow shaft, and the annular cutting edge is located behind the air jet orifice.

[0010] The air jet orifice is used to jet high-speed air flow towards the direction of the turbine hollow shaft, so as to blow and strip the defects on the surface of the yarn through the high-speed air flow, and drive the turbine hollow shaft to rotate around its own axis through the high-speed air flow, so that the annular cutting edge cuts and strips the defects on the surface of the yarn.

[0011] Based on the above technical solutions, preferably, the aperture of the central hole of the turbine hollow shaft is equal to the outer diameter of the yarn.

[0012] Based on the above technical solutions, preferably, the turbine hollow shaft includes an outer sleeve and an inner sleeve, wherein,

[0013] The outer sleeve is rotatably arranged in the yarn conveying channel, and turbine blades are fixedly arranged on the outer periphery of its front end;

[0014] The inner sleeve is detachably arranged inside the outer sleeve, and its inner hole is the central hole of the turbine hollow shaft;

[0015] The front end of the inner sleeve extends forward out of the outer sleeve, and the extending part at the front end of the inner sleeve is conical to form the annular cutting edge.

[0016] Based on the above technical solutions, preferably, a flange is fixedly arranged on the outer periphery of the rear end of the inner sleeve, wherein,

[0017] The flange is fixedly connected with the rear end of the outer sleeve by bolts.

[0018] Based on the above technical solutions, preferably, an air cavity is arranged circumferentially along the yarn conveying channel inside the front end of the outer shell, wherein,

[0019] An air inlet is arranged on the side wall of the air cavity;

[0020] The air jet orifice is arranged at the rear end of the air cavity, and the air cavity is communicated with the yarn conveying channel through the air jet orifice.

[0021] Based on the above technical solutions, preferably, a first annular groove and a second annular groove are arranged inside the yarn conveying channel, wherein,

[0022] The first annular groove is located behind the air jet orifice, and the second annular groove is located behind the first annular groove;

[0023] Both the annular cutting edge and the turbine blades are arranged inside the first annular groove;

[0024] The air outlet is arranged at the side of the second annular groove.

[0025] Based on the above technical solutions, preferably, the front end of the first annular groove is conical and the rear end is arc-shaped to respectively form a first flow guiding surface and a second flow guiding surface.

[0026] Based on the above technical solutions, preferably, a diameter-changing part is arranged on the channel wall of the inner side of the yarn conveying channel and between the first annular groove and the second annular groove, wherein,

[0027] The inner diameter of the diameter-changing part is larger than the inner diameter of the yarn conveying channel to form an air duct.

[0028] Based on the above technical solutions, preferably, it further includes a yarn guiding tube, wherein,

[0029] The yarn guiding tube is coaxially arranged inside the front end of the yarn conveying channel, and the yarn guiding tube is detachably arranged with the yarn conveying channel;

[0030] The inner diameter of the yarn guiding tube is larger than the outer diameter of the inner sleeve.

[0031] On the other hand, the present invention also provides a method for beating yarn for glass fiber, applying the above beating yarn device, including the following steps:

[0032] S1. Fix the housing on the conveying path of the yarn, then thread the traction end of the yarn into the front end of the yarn conveying channel, then into the central hole of the turbine hollow shaft, then lead it out from the hollow rear end of the turbine hollow shaft, and then fix the traction end of the yarn on the winding device;

[0033] S2. Connect the air jet port to a gas source, connect the air outlet to an air filtering device, and continuously draw the yarn through the housing by the winding device;

[0034] S3. Jet high-speed air flow into the yarn conveying channel through the air jet port, use the high-speed air flow to pneumatically strip the defects on the surface of the yarn, and at the same time, use the high-speed air flow to drive the turbine hollow shaft to rotate around its own axis, so that the annular cutting edge circumferentially cuts the defects, and in cooperation with the conveying of the yarn, the annular cutting edge axially cuts the defects at the same time.

[0035] The beating yarn device and the beating yarn method for glass fiber of the present invention have the following beneficial effects compared with the prior art:

[0036] (1) By setting the annular cutting edge and the jet orifice, the synergistic effect of air flow stripping and mechanical cutting is achieved, improving the surface smoothness and uniformity of the yarn, and ensuring the stability of subsequent processing such as knitting and coating. Among them, the high-speed air flow can not only strip defects, but also drive the rotation of the turbine hollow shaft. The rotating annular cutting edge cuts the defects circumferentially and axially, ensuring that the fracture position of the defects is controllable and reducing residues, so as to improve the yarn beating effect and realize the improvement of yarn quality. At the same time, the air flow can also cool the inner sleeve and the annular cutting edge, avoiding the dulling of the cutting edge or the damage of the yarn surface caused by high temperature, and further improving the yarn beating efficiency and yarn quality.

[0037] (2) By setting the diameter of the central hole of the turbine hollow shaft to be equal to the outer diameter of the yarn, the hole wall maintains a slight contact with the outer surface of the yarn. When the turbine hollow shaft rotates, the hole wall performs dynamic circumferential twisting on the yarn, evenly distributing the fibers, improving the twist and structural compactness of the yarn, thereby reducing the looseness or slippage of the internal fibers of the yarn, enhancing the tensile strength and wear resistance, and optimizing the fiber arrangement on the yarn surface, reducing the fracture probability caused by stress concentration.

[0038] (3) By setting the detachable inner sleeve and the yarn guide tube, a modular design is realized, which is convenient for replacing the inner sleeve and the yarn guide tube with different inner diameters, enabling the device to adapt to yarns of different thicknesses and expanding the application range of the device. At the same time, the modular design is convenient for maintenance and replacement of worn parts to maintain the sharpness of the annular cutting edge and ensure effective cutting. Description of the Drawings

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 A three-dimensional view of a yarn beating device for glass fibers according to the present invention;

[0041] Figure 2 A side view of a yarn beating device for glass fibers according to the present invention;

[0042] Figure 3 is Figure 2 the sectional view taken along the line A-A of;

[0043] Figure 4 An exploded view of a yarn beating device for glass fibers according to the present invention;

[0044] In the figure: 1. Outer shell; 2. Turbine hollow shaft; 3. Yarn guiding tube; 4. Air line joint; 5. Mounting base; 21. Outer sleeve; 22. Inner sleeve; 23. Turbine blade; 101. Yarn conveying channel; 102. Air cavity; 201. Annular cutting edge; 221. Flange; 1011. Jet orifice; 1012. Air outlet; 1013. First annular groove; 1014. Second annular groove; 1015. Reducing section; 1016. Air duct; 1021. Air inlet; 10131. First guiding surface; 10132. Second guiding surface. Detailed implementation manners

[0045] Next, in combination with the specific implementation manners of the present invention, the technical solutions in the present invention will be clearly and completely described. Obviously, the described implementation manners are only a part of the implementation manners of the present invention, rather than all the implementation manners. Based on the implementation manners in the present invention, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0046] As Figures 1-4 shown, a yarn beating device for glass fiber of the present invention includes an outer shell 1 and a turbine hollow shaft 2.

[0047] Among them, a yarn conveying channel 101 is provided on the outer shell 1. A jet orifice 1011 is provided on the channel wall at the front end of the yarn conveying channel 101, and an air outlet 1012 is provided on the channel wall at the rear end; the turbine hollow shaft 2 is rotatably arranged inside the yarn conveying channel 101, and its central hole is used for the yarn to pass through. An annular cutting edge 201 is provided at the front end of the turbine hollow shaft 2, and the annular cutting edge 201 is located behind the jet orifice 1011.

[0048] In this structure, the jet orifice 1011 is used to jet high-speed air flow towards the turbine hollow shaft 2, and the high-speed air flow is used to blow and peel off the defects on the surface of the yarn. At the same time, the turbine hollow shaft 2 rotates around its own axis by interacting with the air flow jetted from the jet orifice 1011 through the turbine blades 23 at its front end. Through rotation, the annular cutting edge 201 continuously cuts and peels off the defects on the surface of the yarn. In this way, the synergistic effect of air flow peeling and mechanical cutting is realized, the surface smoothness and uniformity of the yarn are improved, and the stability of subsequent processing such as weaving and coating is ensured.

[0049] Among them, the high-speed air flow can not only peel off the defects, but also drive the rotation of the turbine hollow shaft 2 to form an adaptive power source without an additional power device. The rotating annular cutting edge 201 cuts the defects circumferentially and axially to ensure that the fracture position of the defects is controllable and the residue is reduced, so as to improve the yarn beating effect and thus improve the quality of the yarn. At the same time, the air flow can also cool the inner sleeve 22 and the annular cutting edge 201 to avoid the cutting edge being dulled or the surface of the yarn being damaged due to high temperature, and further improve the yarn beating efficiency and the quality of the yarn.

[0050] Since the yarn is in a conveying state, when the annular blade 201 cuts the defects circumferentially and axially, it will cut continuously in a spiral manner, with small cutting resistance and good cutting effect.

[0051] As Figure 3 shown, the aperture of the central hole of the turbine hollow shaft 2 is equal to the outer diameter of the yarn, so that the hole wall keeps a slight contact with the outer surface of the yarn. When the turbine hollow shaft 2 rotates, the hole wall performs a dynamic circumferential twisting on the yarn, evenly distributes the fibers, improves the twist and structural compactness of the yarn, thereby reducing the looseness or slippage of the internal fibers of the yarn, enhancing the tensile strength and wear resistance, and optimizing the fiber arrangement on the surface of the yarn, reducing the fracture probability caused by stress concentration.

[0052] In addition, the aperture of the central hole of the turbine hollow shaft 2 can also be 0.1 - 0.5 mm larger than the outer diameter of the yarn, which can ensure that there is no excessive extrusion or friction damage to the yarn during the penetration process. This design reduces the running resistance of the yarn, avoids yarn breakage or surface damage caused by too small an aperture, and improves the stability and production efficiency of the device.

[0053] As Figure 3 shown, the turbine hollow shaft 2 includes an outer sleeve 21 and an inner sleeve 22. Among them, as Figure 3 shown, the outer sleeve 21 is rotatably arranged in the yarn conveying channel 101. Specifically, the rear end of the outer sleeve 21 is rotatably connected to the rear end of the yarn conveying channel 101 through a bearing. A turbine blade 23 is welded and fixed on the outer periphery of the front end of the outer sleeve 21. The turbine blade 23 is composed of several blades arranged in an annular array, and the inclination angle of the blade matches the air flow direction to maximize the torque output; the inner sleeve 22 is detachably arranged inside the outer sleeve 21, and its inner hole is the central hole of the turbine hollow shaft 2; the front end of the inner sleeve 22 extends forward out of the outer sleeve 21, and the extending part at the front end of the inner sleeve 22 is conical to form an annular blade 201. Therefore, the inner diameter of the annular blade 201 is consistent with the aperture of the central hole of the turbine hollow shaft 2.

[0054] In this structure, the turbine hollow shaft 2 is designed as a detachable structure of the outer sleeve 21 and the inner sleeve 22, which is convenient for maintenance and replacement of worn parts. The conical design at the front end of the inner sleeve 22 can accurately form the annular blade 201, enhancing the cutting effect on defects. This structure optimizes the synergistic effect between the turbine blade 23 and the annular blade 201, improving the durability and cutting efficiency of the device.

[0055] In addition, a flange 221 is fixedly provided on the outer periphery of the rear end of the inner sleeve 22, and the flange 221 is fixedly connected to the rear end of the outer sleeve 21 by bolts. Among them, through the bolt connection between the flange 221 and the outer sleeve 21, the stable cooperation between the inner sleeve 22 and the outer sleeve 21 is ensured, preventing the turbine hollow shaft 2 from loosening or shifting during high-speed rotation, improving the stability of the device operation, and extending the service life. At the same time, it also facilitates the later disassembly of the inner sleeve 22, which is convenient for maintenance and component replacement.

[0056] As Figure 3 described, an air cavity 102 is provided inside the front end of the outer shell 1 along the circumferential direction of the yarn conveying channel 101. Among them, an air inlet 1021 is provided on the side wall of the air cavity 102; the jet orifice 1011 is provided at the rear end of the air cavity 102, and the air cavity 102 is communicated with the yarn conveying channel 101 through the jet orifice 1011.

[0057] In this structure, the jet orifice 1011 adopts a tapered tube-shaped hole structure that is wider at the front and narrower at the rear, and is evenly distributed around the yarn conveying channel 101 to ensure that the air flow can cover the surface of the yarn in all directions, improving the defect peeling effect. Among them, the taper angle is designed to be 15° - 20°, ensuring that the air flow velocity reaches the peak at the outlet, while reducing the turbulent loss.

[0058] In addition, a first annular groove 1013 and a second annular groove 1014 are provided inside the yarn conveying channel 101. Among them, the first annular groove 1013 is located behind the jet orifice 1011, and the second annular groove 1014 is located behind the first annular groove 1013; the annular cutting edge 201 and the turbine blade 23 are both provided inside the first annular groove 1013; the air outlet 1012 is provided on the side of the second annular groove 1014.

[0059] In this structure, the stepped layout of the first annular groove 1013 and the second annular groove 1014 provides a precise installation space for the turbine blade 23, the annular cutting edge 201, and the outer sleeve 21. Among them, the annular cutting edge 201 is located inside the first annular groove 1013, which not only avoids interference with the turbine blade 23 but also ensures that its axial cutting path is consistent with the air flow direction, improving the collaborative efficiency of yarn beating. The air outlet 1012 is located on the side of the second annular groove 1014, which can orderly discharge the air flow, reduce the interference of air flow backflow on the yarn beating effect, and at the same time, facilitate the air flow to carry the dropped flyings out of the air outlet 1012 to prevent waste accumulation.

[0060] As Figure 3As shown, the front end of the first annular groove 1013 is conical and the rear end is arc-shaped, respectively forming a first air guiding surface 10131 and a second air guiding surface 10132. Among them, the first air guiding surface 10131 is used to guide the air flow to smoothly reach the smooth turbine blade 23, and the second air guiding surface 10132 is used to guide the air flow to smoothly reach the second annular groove 1014, reducing turbulence and energy loss. This design optimizes the air flow path, improves the evenness of the force on the turbine blade 23, ensures the stable rotation of the turbine hollow shaft 2, and further enhances the reliability of yarn beating. In this structure, the conical angle of the first air guiding surface 10131 can be 15° - 20°, and the arc curvature radius of the second air guiding surface 10132 can be 3 - 5 mm. This parameter combination can reduce the air flow velocity fluctuation to ±5%, significantly improving the rotation stability of the turbine hollow shaft 2.

[0061] In addition, a diameter-changing part 1015 is provided on the channel wall of the inner side of the yarn conveying channel 101 and between the first annular groove 1013 and the second annular groove 1014. The inner diameter of the diameter-changing part 1015 is larger than the inner diameter of the yarn conveying channel 101 to form an air duct 1016. Among them, the air duct 1016 formed by the diameter-changing part 1015 expands the cross-sectional area of the air flow channel, reduces the air flow resistance, and enables the air flow to flow more efficiently in the yarn conveying channel 101. This design balances the air flow velocity and pressure, ensuring both the driving efficiency of the turbine hollow shaft 2 and maintaining the strength of air blowing and peeling, and improving the overall yarn beating performance.

[0062] As Figure 3 shown, a yarn guiding tube 3 is coaxially arranged on the inner side of the front end of the yarn conveying channel 101, and the yarn guiding tube 3 is detachably arranged. Cooperating with the detachable inner sleeve 22, a modular design is realized, which is convenient for replacing the inner sleeve 22 and the yarn guiding tube 3 with different inner diameters, enabling the device to adapt to yarns of different thicknesses and expanding the application range of the device. At the same time, the modular design is convenient for maintenance and replacement of worn parts to maintain the sharpness of the annular cutting edge 201 and ensure effective cutting. Among them, the yarn guiding tube 3 adopts a flange structure to realize the installation and fixation with the housing 1. Specifically, a flange is provided at the front end of the yarn guiding tube 3, and the flange is connected and fixed to the front end of the housing 1 through bolts.

[0063] In addition, the inner diameter of the yarn guiding tube 3 is larger than the outer diameter of the inner sleeve 22, which can guide the yarn with defects to smoothly enter the turbine hollow shaft 2, reduce operation errors, and prevent the yarn from breaking due to the interference between the defects and the yarn guiding tube 3.

[0064] As Figure 1As shown, an air line connector 4 is respectively provided on the air inlet 1021 and the air outlet 1012 for connecting an air source or an air filter, wherein both the air source and the air filter are any one of the prior arts, such as a compressed air station (patent application number: CN202080025849.8), an air purifier (patent application number: CN202311674570.4). The air source provides high-speed airflow for the yarn beating operation, and the air filter filters the exhausted airflow and recovers the fluff waste obtained after filtration, realizing material recovery.

[0065] In addition, the above-mentioned yarn beating device further has a mounting base 5 for fixing the yarn beating device on the conveying path of the yarn. To facilitate the flexible installation of the yarn beating device, as Figure 1 shown, mounting holes are provided at the bottom and both sides of the outer shell 1 for bottom mounting or side mounting of the mounting base 5.

[0066] In addition, as Figure 4 shown, the outer shell 1 is a transparent outer shell, which is convenient for observing the operation of its internal components and also convenient for observing whether the second annular groove 1014 is blocked. At the same time, the outer shell 1 is composed of two half shells spliced together, which is convenient for installing the turbine hollow shaft 2 into the outer shell 1.

[0067] The above-mentioned yarn beating device is mainly used for the automated yarn beating operation of yarns in the production process of glass fibers. Compared with the prior art (a yarn beating machine, a yarn beating device and a yarn beating method for glass fibers disclosed in the invention with the application number CN200910165419.1), it does not require too much manual participation and is convenient to be applied to an automated production line. Among them, the yarn includes roving, tube yarn or other filamentous glass fiber products. It can also be used for the yarn beating work in the weaving section of an electronic glass fiber cloth factory to remove defects such as flying filaments and fluff on the surface of low-twist electronic glass fiber yarns. Its yarn beating method includes the following steps:

[0068] S1. Fix the outer shell 1 on the conveying path of the yarn, then insert the leading end of the yarn into the front end of the yarn conveying channel 101, then insert it into the central hole of the turbine hollow shaft 2, and then lead it out from the hollow rear end of the turbine hollow shaft 2, and then fix the leading end of the yarn on the winding equipment;

[0069] S2. Connect the air jet port 1011 to an air source and connect the air outlet 1012 to an air filtering device, and continuously draw the yarn through the outer shell 1 by the winding equipment;

[0070] S3. Jet high-speed airflow into the yarn conveying channel 101 through the air jet port 1011, use the high-speed airflow to pneumatically strip the defects on the surface of the yarn, and at the same time, use the high-speed airflow to drive the turbine hollow shaft 2 to rotate around its own axis, so that the annular cutting edge 201 performs circumferential cutting on the defects, and in cooperation with the conveying of the yarn, the annular cutting edge 201 simultaneously performs axial cutting on the defects.

[0071] Among them, in step S3, defects such as flying filaments and fluff stripped off are carried into the second annular groove 1014 by compressed air, and then enter the air filter through the air outlet 1012 for filtration to obtain a mixed crushed material of flying filaments and fluff, realizing material recovery.

[0072] In step S1, a yarn guide tube 3 with a suitable inner diameter is installed in advance at the front end of the yarn conveying channel 101, and an inner tube 22 with a suitable inner diameter is installed in the outer tube 21. Therefore, the yarn guide tube 3 and the inner tube 22 of this device need to be customized and adjusted according to different types of glass fiber yarns.

[0073] For example: when producing electronic-grade ultra-fine yarns (diameter ≤ 8μm), the inner diameter of the central hole of the inner tube 22 is 0.05 ± 0.01 mm larger than the outer diameter of the yarn, the annular cutting edge 201 is made of WC-TiC super hard alloy (hardness ≥ 1400 HV), and the sharpness of the cutting edge reaches 0.01 mm, ensuring precise peeling of the ultra-fine yarns, avoiding damage to the thin yarns, and at the same time reducing the air flow speed to 15 - 20 m / s to reduce the physical impact of the high-speed air flow on the ultra-fine yarns.

[0074] Another example is when producing high-strength and high-modulus glass fiber yarns (tensile strength ≥ 4500 MPa), a double-layer outer tube 21 structure is adopted, with a carbon fiber reinforced composite material on the outer layer and stainless steel on the inner layer to improve the anti-fatigue performance of the turbine hollow shaft during high-speed rotation. The inner wall of the yarn guide tube 3 is coated with a diamond-like carbon (DLC) coating to reduce the friction coefficient with the high-strength yarns to below 0.08.

[0075] In addition, the high-speed air flow is ordinary compressed air. To improve the cooling effect, the high-speed air flow can also be high-speed cold air cooled by a cooling device (such as a method and device for cooling compressed air flow disclosed in Patent Application No. CN200580044942.9), or low-temperature nitrogen is conveyed into the air inlet 1021 to achieve the cooling and temperature reduction of this yarn-beating device and the yarn, preventing the surface of the yarn (such as freshly drawn glass fiber) from softening and sticking due to high temperature, and preventing the surface of the yarn from being scalded.

[0076] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A yarn beating device for glass fibers, comprising a housing (1), characterized in that: It further includes a turbine hollow shaft (2), wherein, a yarn conveying channel (101) is provided on the housing (1), a jet orifice (1011) is provided on the channel wall at the front end of the yarn conveying channel (101), and an air outlet (1012) is provided on the channel wall at the rear end; the turbine hollow shaft (2) is rotatably arranged inside the yarn conveying channel (101), its central hole is for the yarn to pass through, a circular cutting edge (201) is provided at the front end of the turbine hollow shaft (2), and the circular cutting edge (201) is located behind the jet orifice (1011); the jet orifice (1011) is used to jet high-speed air flow towards the turbine hollow shaft (2), the defects on the surface of the yarn are blown and peeled off by the high-speed air flow, and the turbine hollow shaft (2) is driven to rotate around its own axis by the high-speed air flow, so that the circular cutting edge (201) cuts and peels off the defects on the surface of the yarn.

2. The yarn beating device for glass fiber according to claim 1, wherein: The aperture of the central hole of the turbine hollow shaft (2) is equal to the outer diameter of the yarn.

3. The yarn-beating device for glass fiber according to claim 1, wherein: The turbine hollow shaft (2) includes an outer sleeve (21) and an inner sleeve (22), wherein, the outer sleeve (21) is rotatably arranged in the yarn conveying channel (101), and turbine blades (23) are fixedly arranged on the outer periphery of its front end; the inner sleeve (22) is detachably arranged inside the outer sleeve (21), and its inner hole is the central hole of the turbine hollow shaft (2); the front end of the inner sleeve (22) extends forward out of the outer sleeve (21), and the extending part at the front end of the inner sleeve (22) is conical to form the circular cutting edge (201).

4. A yarn beating device for glass fiber as described in claim 3, characterized in that: A flange (221) is fixedly arranged on the outer periphery of the rear end of the inner sleeve (22), wherein, the flange (221) is fixedly connected with the rear end of the outer sleeve (21) by bolts.

5. A yarn beating device for glass fiber according to claim 1, characterized in that: An air cavity (102) is arranged along the circumferential direction of the yarn conveying channel (101) inside the front end of the housing (1), wherein, an air inlet (1021) is provided on the side wall of the air cavity (102); the jet orifice (1011) is arranged at the rear end of the air cavity (102), and the air cavity (102) is communicated with the yarn conveying channel (101) through the jet orifice (1011).

6. The yarn beating device for glass fiber according to claim 3, characterized in that: A first annular groove (1013) and a second annular groove (1014) are arranged inside the yarn conveying channel (101), wherein, the first annular groove (1013) is located behind the jet orifice (1011), and the second annular groove (1014) is located behind the first annular groove (1013); both the circular cutting edge (201) and the turbine blades (23) are arranged inside the first annular groove (1013); the air outlet (1012) is arranged at the side part of the second annular groove (1014).

7. The yarn beaming device for glass fiber according to claim 6, characterized in that: The front end of the first annular groove (1013) is conical and the rear end is arc-shaped to respectively form a first flow guiding surface (10131) and a second flow guiding surface (10132).

8. The yarn-beating device for glass fiber according to claim 6, characterized in that: A diameter reducing portion (1015) is provided on the channel wall inside the yarn conveying channel (101) and between the first annular groove (1013) and the second annular groove (1014), wherein: The inner diameter of the diameter-changing portion (1015) is greater than the inner diameter of the yarn conveying channel (101) to form an air duct (1016).

9. A yarn-beating device for glass fiber according to claim 3, characterized in that: It also includes a yarn guide tube (3), wherein: The yarn guide tube (3) is coaxially arranged on the inner side of the front end of the yarn conveying channel (101), and the yarn guide tube (3) and the yarn conveying channel (101) are detachably arranged; The inner diameter of the yarn guide tube (3) is greater than the outer diameter of the inner sleeve (22).

10. A yarn beating method for glass fiber, which applies the yarn beating device as described in claims 1 to 9, is characterized in that: The following steps are involved: S1, fixing the housing (1) on the conveying path of the yarn, then passing the traction end of the yarn through the front end of the yarn conveying channel (101), then passing through the center hole of the turbine hollow shaft (2), then leading out from the hollow rear end of the turbine hollow shaft (2), and then fixing the traction end of the yarn on the winding device; S2, connecting the air jet (1011) to an air source, connecting the air outlet (1012) to an air filtering device, and pulling the yarn through the housing (1) continuously through a winding device; S3, a high-speed airflow is injected into the yarn conveying channel (101) through the air jet port (1011), and the defects on the yarn surface are pneumatically stripped by the high-speed airflow. At the same time, the high-speed airflow is used to drive the hollow shaft of the turbine (2) to rotate around its own axis, so that the annular cutting edge (201) performs circumferential cutting on the defects. In conjunction with the conveying of the yarn, the annular cutting edge (201) simultaneously performs axial cutting on the defects.

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