Yarn evenness testing device and method

Abstract

The invention discloses a yarn evenness testing device and method, which relate to the technical field of yarn analysis, and include a stabilizing frame. With the cooperation of a short linear motor rail and a sliding connection saddle, a worker can detect the evenness state of the yarn in real time, and in the whole process, a capacitive sensor chip can be used to continuously monitor the capacitance change of the yarn, and by simulating a low-speed or high-speed spinning process, the rotation speed of a winding motor and the adsorption strength of an adsorption guide pump tube are adjusted to dynamically test the yarn, and the accuracy of the dynamic changes generated by the yarn in high-speed spinning and low-speed environments is improved, so that the evenness in the high-speed production process can be effectively detected and responded in real time, and the accuracy of the test data of the yarn in dynamic state is further improved, and at the same time, the subsequent actual production efficiency and the consistency of yarn quality control are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of yarn analysis, and in particular to a yarn evenness testing device and method. Background Art

[0002] The yarn evenness test analyzer is an efficient and high-performance textile testing instrument. It is used to test the unevenness of yarn and sliver density and the richness of yarn surface hairiness. It is an essential test instrument for textile enterprises to conduct quality inspection and control, and is of great significance to improving and ensuring yarn quality. The instrument is suitable for pure and blended yarns and slivers of cotton, wool, silk, linen, and chemical fiber staple fibers.

[0003] However, in the prior art, during the yarn evenness test, when in a high-speed spinning environment, the movement state of the yarn is unstable. In addition, the yarn diameter is small, and dynamic measurement is extremely difficult. As a result, the current testing method is often carried out when the yarn is stopped or moving slowly, and it is impossible to reflect the yarn evenness in the high-speed production process in real time. Therefore, it is necessary to propose a yarn evenness uniformity testing device. Summary of the invention

[0004] The purpose of the present invention is to provide a yarn evenness testing device to solve the problem proposed in the above-mentioned background technology that during the yarn evenness testing process, when in a high-speed spinning environment, the movement state of the yarn is unstable, and the yarn diameter is small, making dynamic measurement extremely difficult. As a result, the current testing method is often carried out when the yarn is stopped or moving slowly, and is unable to reflect the yarn evenness problem in the high-speed production process in real time.

[0005] To achieve the above object, the present invention provides the following technical solution: a yarn evenness testing device, comprising:

[0006] The low-speed capacitive sensor detection end is used to simulate the low-speed spinning process to conduct preliminary testing on the yarn, and transmit the recorded and analyzed data to the external controller for storage;

[0007] A horizontal rail, which is used to drive the telescopic guide rod and the structure connected to it to synchronously adjust to the two ends of the maximum upper and lower bands generated at the center of the yarn;

[0008] A gear device is used to enable the tactile sensor contact piece to more accurately contact the highest and lowest points of the fluctuation formed by the upper and lower ends of the yarn when the yarn is jumping during the simulation of the spinning operation;

[0009] A Fourier transform real-time detector is capable of analyzing data detected by the tactile sensor contact sheet on the roughness or hardness surface of the yarn.

[0010] Preferably, it also includes:

[0011] A contact stress sensor comprising:

[0012] Slotting rack, sliding edge detection rack, stress counter and sliding dovetail slot;

[0013] The contact stress sensor is used to contact the edge of the yarn and detect in real time the contact stress formed by the upper and lower fluctuating edges of the yarn when the yarn is in a moving state of the center section during the simulated high-speed spinning transmission process, and transmit the data to the stress counter in real time.

[0014] Preferably, the gear device comprises:

[0015] Two sets of short linear motor rails, sliding connection saddles, threaded sleeves, threaded rods and gear drive boxes;

[0016] The sliding connection saddle is located inside the short linear motor rail and slides to drive the threaded sleeve, the threaded rod and the gear drive box to synchronously move according to the positions of the two ends of the maximum upper and lower bands generated at the center of the yarn;

[0017] The gear drive box is used to provide power to drive the threaded rod to rotate downward from the inner thread of the threaded sleeve for adjustment.

[0018] Preferably, the testing device includes a stabilizing frame, a dust removal box, and a yarn tube. The side of the dust removal box is installed with a detection end of a low-speed capacitive sensor. The dust removal box is used to process the yarn passing through the dust removal box. The side end of the yarn tube is connected to a yarn guide detection box, and the yarn tube is used to guide the yarn to the yarn guide detection box.

[0019] Preferably, a driving mounting structure is symmetrically installed on the side of the dust collecting box, and the side end of the driving mounting structure passes through the dust collecting box and is connected to a fiber debris collecting and adsorption roller. The inner side end of the dust collecting box is connected to a yarn feed tension adjustment lead end, and the fiber debris collecting and adsorption roller is used to adsorb fiber debris, fluff and other impurities on the surface of the yarn to maintain the cleanliness of the yarn. The yarn feed tension adjustment lead end can adjust the yarn tension under the control of the signal command of the external controller that analyzes and feedbacks the data after detection by the low-speed capacitive sensor detection end.

[0020] Preferably, a photoelectric sensor is installed on the side of the yarn guide detection box, and a miniature high-speed camera end is installed on the top of the yarn guide detection box. The photoelectric sensor is installed near the yarn outlet tube and can monitor the passing status of the incoming yarn in real time, that is, it can detect yarn breakage, yarn shortage, etc., and can immediately send out an alarm signal. The miniature high-speed camera end can be used to capture high-definition images of the yarn surface, and through high-speed shooting, record the microstructure of the medium thickness, hairiness or nodules of the yarn transmission, and then transmit the tested image data to an external controller to record and analyze the yarn quality and identify the status of yarn surface defects.

[0021] Preferably, the side end of the slotting frame is fastened to the telescopic guide rod, and a driving control motor is installed on the side of the slotting frame. The output end of the driving control motor passes through the interior of the slotting frame and is connected to a double-convex rotating rod. The top and bottom of the double-convex rotating rod are hinged with a rotating curved rod. The driving control motor is used to provide driving force to drive the double-convex rotating rod to rotate. The rotational motion of the double-convex rotating rod is converted into a reciprocating swing of the rotating curved rod. The swing of the rotating curved rod can make the sliding edge detection frame slide and adjust in the sliding dovetail groove opened on the top and bottom surfaces of the slotting frame, so that multiple groups of contact stress sensors contact the edge of the yarn.

[0022] Preferably, the other side end of the detection end of the low-speed capacitive sensor is connected to a yarn feed drying tube, the side end of the yarn feed drying tube is connected to a pretreatment yarn stripper, the side end of the pretreatment yarn stripper is connected to a yarn feed adsorption duct, the yarn feed adsorption duct can utilize negative pressure to adsorb the yarn, and the pretreatment yarn stripper is used for pre-treatment operations such as preliminary tension adjustment, diameter adjustment or cleaning of the yarn.

[0023] Preferably, the side end of the yarn guide detection box is connected to an adsorption and guiding pump tube, and the side end frame of the adsorption and guiding pump tube is installed with a winding motor, and the bottom output end of the winding motor is connected with a winding roller. When the yarn enters, the adsorption and guiding pump tube is used to generate negative pressure, so that the negative pressure is synchronously generated inside the yarn adsorption duct to adsorb the yarn and guide the yarn. The winding motor is started under the command of an external controller to drive the winding roller to rotate, so that the yarn is evenly wound on the winding roller to form a yarn roll, and the simulation of the yarn spinning process at low speed or high speed can be controlled by the rotation speed of the winding motor and the adsorption force of the adsorption and guiding pump tube, so as to further form a yarn evenness test operation.

[0024] The method of the yarn evenness test device comprises the following steps:

[0025] S1. First, the yarn to be tested enters the pre-treatment yarn stripper from the yarn feeding adsorption conduit for washing and pre-treatment, and enters the yarn feeding drying tube for drying, and then enters the low-speed capacitive sensor detection end to detect the yarn in a low-speed state. Next, the yarn passes through the impurity removal box and enters the yarn tube and yarn guide detection box;

[0026] S2. When the yarn enters the yarn guide detection box, the tactile sensor contact pieces at both ends are adjusted to contact the top and bottom of the yarn in the beating state, and then the data is generated by the Fourier transform real-time detector and the capacitive sensor chip for real-time monitoring;

[0027] S3. Then, the distance telescopic guide rod and the structure carried by it are driven to adjust their positions through the horizontal rail and the inner sliding seat, so that the stress counter and multiple groups of contact stress sensors form contact detection of the two ends of the maximum upper and lower bands generated at the center of the yarn during the transmission process;

[0028] S4. Then, the photoelectric sensor and the micro high-speed camera are used to detect the yarn simultaneously. The entry of the yarn is ensured by the adsorption of the adsorption guide pump tube and the conduction traction of the winding motor and the winding roller to ensure real-time testing during the yarn entry process.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. In the present invention, the sliding connection saddle drives the related structure it carries to adjust the position under the cooperation of the short linear motor rail and the sliding connection saddle. The adjusted position is the left and right ends of the yarn, and the movement state is at the edge of the upper and lower fluctuations. Then the gear drive box is used to provide power to make the threaded rod rotate downward from the internal thread of the threaded sleeve. At the same time, when the two groups of threaded rods drive the connecting sliding blocks to form opposite adjustments, the vertical slide groove rod moves synchronously with the cooperation of the connecting sliding blocks. When the tactile sensor contact piece is located at the edge peak position of the yarn movement state of the upper and lower fluctuations, the micro-electric telescopic rod is adjusted in real time according to the demand, driving the rack to extend forward, so that the rack drives the gear to rotate, and the gear drives the wing edge and the connecting guide rod to be fine-tuned, so that the tactile sensor contact piece can be more accurate when simulating the yarn spinning operation. When the yarn bounces, the highest and lowest points of the fluctuation formed by the upper and lower ends are in contact, so that the tactile sensor contact piece detects the roughness or hardness surface of the yarn, and then collects and analyzes the vibration data of the yarn, and identifies the defect frequency through the Fourier transform real-time detector, and converts the data of the Fourier transform real-time detector into a fluctuation monitoring value table, which is conducive to the staff to detect the yarn uniformity state in real time, and in the whole process, the capacitance change of the yarn can be continuously monitored by the capacitive sensor chip, and by simulating the low-speed or high-speed spinning process, the speed of the winding motor and the adsorption strength of the adsorption guide pump tube can be adjusted to dynamically test the yarn, and improve the accuracy of the measurement of the dynamic changes of the yarn in high-speed spinning and low-speed environments, so as to effectively detect and respond to the yarn uniformity in real time during the high-speed production process.

[0031] 2. In the present invention, with the cooperation of the distance telescopic guide rod, the slotted frame and the double convex rotating rod, when the distance telescopic guide rod is driven by the inner sliding seat to move and adjust to the preset starting position of the detection yarn, the distance telescopic guide rod is then started, and the slotted frame and the structure it carries and connects are synchronously extended to the upper and lower ends of the yarn, and then the driving control motor drives the double convex rotating rod to rotate through its output end, and the rotational motion of the double convex rotating rod is converted into the reciprocating swing of the rotating curved rod, and then the swing of the rotating curved rod causes the sliding edge detection frame to slide and adjust in the sliding dovetail groove of the slotted frame, so that multiple groups of contact stress sensors contact the edge of the yarn, and real-time detect the contact stress formed by the upper and lower fluctuating edges of the yarn when the yarn is in the motion state of the central segment during the simulated high-speed spinning transmission process, and transmit the data to the stress counter in real time, the stress counter collects and records the data transmitted by the contact stress sensor, and judges the state of the yarn edge by analyzing the stress change, such as whether there is wear, breakage or unevenness, so as to further improve the accuracy of the test data of the yarn in dynamic state.

[0032] 3. In the present invention, by cooperating with the yarn feed tension adjustment lead end, the low-speed capacitive sensor detection end and the fiber scrap collecting adsorption roller, when the yarn enters the dust removal box from the yarn feed tension adjustment lead end, according to the above detection by the low-speed capacitive sensor detection end, under the control of the signal command of the external controller that analyzes and feedbacks the data, the yarn undergoes tension adjustment and ensures the stability of the yarn in the subsequent processing process. When the yarn enters the dust removal box, the fiber scrap collecting adsorption roller rotates driven by the driving mounting structure to adsorb fiber scraps, fluff and other impurities on the surface of the yarn to keep the cleanliness of the yarn. Then the vacuum dust suction valve tube opens when the yarn passes through, and the fiber scraps, dust and the like inside the dust removal box are sucked into the dust storage pump box through the negative pressure to keep the cleanliness of the dust removal box. After that, the yarn passes through the yarn feed tube horizontally. It directly enters the yarn guide detection box, and then uses the horizontal rail to drive the distance telescopic guide rod and the structure it carries and connects to be synchronously adjusted to the two ends of the maximum upper and lower bands generated by the center of the yarn. The photoelectric sensor is installed near the yarn outlet tube, which can monitor the passing status of the entering yarn in real time, that is, it can detect yarn breakage, yarn shortage, etc., and can immediately send out an alarm signal. The micro high-speed camera is installed on the top of the yarn guide detection box, which can be used to capture high-definition images of the yarn surface. Through high-speed shooting, the microstructure of the thickness, hairiness or nodules in the yarn transmission is recorded, and then the tested image data is transmitted to the external controller to record and analyze the yarn quality and identify the state of yarn surface defects, which effectively improves the subsequent actual production efficiency and the consistency of yarn quality control. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the main structure of the yarn evenness testing device of the present invention;

[0034] Figure 2 It is a schematic diagram of the internal structure of the impurity removal box in the yarn evenness testing device of the present invention;

[0035] Figure 3 It is a schematic diagram of the internal structure of the yarn guide detection box in the yarn evenness test device of the present invention;

[0036] Figure 4 It is a schematic diagram of the internal structure separation of the yarn guide detection box in the yarn evenness test device of the present invention;

[0037] Figure 5 It is a schematic diagram of the installation position structure of the inner sliding seat in the yarn evenness testing device of the present invention;

[0038] Figure 6 It is a schematic diagram of the installation position structure of the sliding edge detection frame, the contact stress sensor and the stress counter in the yarn evenness test device of the present invention;

[0039] Figure 7It is a schematic diagram of the installation position structure of the threaded sleeve, the threaded rod and the gear drive box in the yarn evenness test device of the present invention;

[0040] Figure 8 It is a schematic diagram of the installation position structure of the rack and the gear in the yarn evenness testing device of the present invention;

[0041] Fig. 9 The present invention is a schematic diagram of the installation position structure of the tactile sensor contact piece, the fluctuation monitoring value table and the capacitive sensor chip in the yarn evenness testing device of the present invention.

[0042] In the figure: 1. Stable frame; 2. Control power supply line box; 3. Linear guide rail; 4. Antistatic device; 5. De-duster box; 6. Drive installation structure; 7. Low-speed capacitive sensor detection end; 8. Yarn tube; 9. Yarn inlet drying tube; 10. Pre-treatment yarn stripper; 11. Yarn inlet adsorption duct; 120. Yarn guide detection box; 121. Fixed installation frame; 123. Photoelectric sensor; 124. Horizontal rail; 125. Yarn inlet tube; 126. Yarn outlet tube; 127. Micro high-speed camera end; 128. Inner sliding seat; 13. Adsorption guide pump tube; 14. Winding motor; 15. Winding roller; 16. Fiber scraps collection adsorption roller; 17. Vacuum valve tube; 18. Yarn inlet tension adjustment lead end; 191. Distance telescopic guide rod; 192. Slotting frame; 193. Drive control motor; 19 4. Double convex rotating rod; 195. Rotating curved rod; 196. Sliding dovetail groove; 197. Sliding edge detection frame; 198. Contact stress sensor; 199. Stress counter; 201. Short linear motor rail; 202. Sliding connection saddle; 203. Threaded sleeve; 204. Threaded rod; 205. Gear drive box; 206. Vertical slide rod; 207. Connecting sliding block; 208. Connecting piece; 209. Micro electric telescopic rod; 2090. Rack; 2091. Gear; 2092. Wing edge; 2093. Connecting guide rod; 2094. Fourier transform real-time detector; 2095. Fine-tuning angle rotating member; 2096. Tactile sensor contact piece; 2097. Fluctuation monitoring value table; 2098. Slotted edge frame; 2099. Capacitive sensor chip. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Reference Figure 1 - Fig. 9As shown: the yarn evenness test device includes: a low-speed capacitive sensor detection end 7, which is used to simulate the low-speed spinning process to perform a preliminary test on the yarn, and transmit the recorded and analyzed data to an external controller for storage;

[0045] The horizontal rail 124 is used to drive the telescopic guide rod 191 and the structure connected thereto to be synchronously adjusted to the two ends of the maximum upper and lower bands generated at the center of the yarn;

[0046] A gear device, which is used to enable the tactile sensor contact piece 2096 to more accurately contact the highest and lowest points of the fluctuation formed by the upper and lower ends of the yarn when the yarn is jumping during the simulation of the spinning operation;

[0047] Fourier transform real-time detector 2094, which can analyze the data of the roughness or hardness surface detection of the yarn based on the tactile sensor contact sheet 2096;

[0048] In the first specific scheme, a stabilizing frame 1 is installed at the bottom of the side end of the low-speed capacitive sensor detection end 7, the side end of the low-speed capacitive sensor detection end 7 is connected to the dust removal box 5, the side end of the dust removal box 5 is connected to the yarn tube 8, the side end of the yarn tube 8 is connected to the yarn guide detection box 120, and the horizontal rail 124 is installed inside the yarn guide detection box 120. The inside of the horizontal rail 124 is slidably connected with an inner sliding seat 128. Two sets of short linear motor rails 201 are symmetrically installed at both ends of the horizontal rail 124, and the two sets of short linear motor rails 201 are symmetrically installed at both ends of the horizontal rail 124. The machine rail 201 forms a vertical symmetrical arrangement, the interior of the short linear motor rail 201 is slidably connected to a slidably connected saddle 202, a threaded sleeve 203 is installed inside the slidably connected saddle 202, a threaded rod 204 is threadedly connected to the inner bottom end of the threaded sleeve 203, a gear drive box 205 is installed outside the side end of the threaded sleeve 203, a connector 208 is fastened to the bottom of the threaded rod 204, a vertical slide rod 206 is fastened to the side end of the slidably connected saddle 202, and the inner bottom end of the vertical slide rod 206 is fastened to the inner bottom end of the vertical slide rod 206. The connecting piece 208 is slidably connected with a connecting sliding block 207, the side end of the connecting piece 208 is fastened with a slotted side frame 2098, the side end of the connecting piece 208 is fastened with a micro electric telescopic rod 209, the side end of the micro electric telescopic rod 209 is fastened with a rack 2090, the bottom end of the rack 2090 is meshed with a gear 2091, the gear 2091 is installed on a side surface of the slotted side frame 2098, the side end of the gear 2091 is fastened with a wing edge 2092, and the top of the wing edge 2092 is installed with a connecting guide Rod 2093, the side end of the connecting guide rod 2093 is fastened with a Fourier transform real-time detector 2094, the side end of the Fourier transform real-time detector 2094 is installed with a fine-tuning angle rotating member 2095, the side end of the fine-tuning angle rotating member 2095 is installed with a tactile sensor contact piece 2096, the top of the Fourier transform real-time detector 2094 is installed with a fluctuation monitoring value table 2097, and the top side end of the Fourier transform real-time detector 2094 is installed with a capacitive sensor chip 2099.

[0049] according to Figure 6 As shown, the contact stress sensor 198 comprises:

[0050] slotting frame 192, sliding edge detection frame 197, stress counter 199 and sliding dovetail slot 196;

[0051] The contact stress sensor 198 is used to contact the edge of the yarn and detect in real time the contact stress formed by the upper and lower fluctuating edges of the yarn when the yarn is in a moving state of the center section during the simulated high-speed spinning transmission process, and transmit the data in real time to the stress counter 199. In a preferred embodiment, the top and bottom surfaces of the slotted frame 192 are provided with sliding dovetail grooves 196, and the interior of the sliding dovetail grooves 196 is slidably connected to a sliding edge detection frame 197, and a plurality of groups of contact stress sensors 198 are equidistantly installed on the bottom wall surface of the sliding edge detection frame 197, and a stress counter 199 is installed on the top of the sliding edge detection frame 197, and the stress counter 199 and A plurality of contact stress sensors 198 are electrically connected, and then the swing of the rotating curved rod 195 causes the sliding edge detection frame 197 to slide and adjust in the sliding dovetail groove 196 of the slotted frame 192, so that the plurality of contact stress sensors 198 contact the edge of the yarn, and detect in real time the contact stress formed by the up and down fluctuating edges of the yarn when the yarn is in the motion state of the center section during the simulated high-speed spinning transmission process, and transmit the data in real time to the stress counter 199. The stress counter 199 collects and records the data transmitted by the contact stress sensor 198, and judges the state of the yarn edge by analyzing the stress changes, such as whether there is wear, breakage or unevenness.

[0052] according to Figure 7 and Figure 8 As shown, the gear device includes:

[0053] Two sets of short linear motor rails 201, sliding connection saddle 202, threaded sleeve 203, threaded rod 204 and gear drive box 205;

[0054] The sliding connection saddle 202 is located inside the short linear motor rail 201 and slides to drive the threaded sleeve 203, the threaded rod 204 and the gear drive box 205 to move synchronously according to the two end positions of the maximum upper and lower bands generated at the center of the yarn;

[0055] The gear drive box 205 is used to provide power to drive the threaded rod 204 to rotate downward from the inner thread of the threaded sleeve 203 to adjust.

[0056] according to Figure 1 - Figure 4As shown, the test device includes a stable frame 1, a dust removal box 5, and a yarn tube 8. The side of the dust removal box 5 is installed with a low-speed capacitive sensor detection end 7. The dust removal box 5 is used to process the yarn passing through the dust removal box 5. The side end of the yarn tube 8 is connected to a yarn guide detection box 120, and the yarn tube 8 is used to guide the yarn to the yarn guide detection box 120. In a preferred embodiment, the other side end of the yarn guide detection box 120 is connected to a yarn outlet tube 126, and a photoelectric sensor 123 is installed on the side of the yarn outlet tube 126. The yarn guide detection box 12 0 is installed on the top of the frame 1, and the photoelectric sensor 123 is installed near the yarn outlet tube 126, which can monitor the passing state of the yarn in real time, that is, it can detect the broken end, yarn shortage and other conditions of the yarn, and can immediately send out an alarm signal, and the micro high-speed camera end 127 is installed on the top of the yarn guide detection box 120, which can be used to capture high-definition images of the yarn surface, and record the microstructure of the medium thickness, hairiness or nodules of the yarn transmission through high-speed shooting, and then transmit the tested image data to the external controller to record and analyze the yarn quality and identify the state of the yarn surface defects, and the control power supply line box 2 is installed inside the frame of the stable frame 1, and the control power supply line box 2 is installed on the top of the linear guide rail 3, and the static dissipator 4 is slidably connected to the top of the linear guide rail 3. The static dissipator 4 is located in the groove on the bottom surface of the impurity removal box 5 and is slidably connected, so that the static dissipator 4 is installed on the top of the linear guide rail 3 and can move left and right along the guide rail track through the sliding connection, and the position of the static dissipator 4 is consistent with the de-impurity removal box 5. Corresponding to the groove at the bottom of the impurity box 5, when the yarn enters the impurity box 5, the power supply box 2 is controlled to supply power to the anti-static device 4, and the working state of the anti-static device 4 is started, so that the anti-static device 4 generates an electric field, and the anti-static device 4 is moved back and forth left and right on the linear guide 3, and the yarn passing through the impurity box 5 is treated with anti-static treatment through the groove at the bottom of the impurity box 5, thereby reducing dust and impurities adsorbed on the surface of the yarn, improving the cleanliness of the yarn, and reducing broken or jumped wires, thereby ensuring the stability of the yarn in the subsequent testing process.

[0057] according to Figure 1 and Figure 2As shown, the side of the dust removal box 5 is symmetrically installed with a drive installation structure 6, and the side end of the drive installation structure 6 passes through the dust removal box 5 and is connected to a fiber scrap collecting and adsorption roller 16, and the inner side end of the dust removal box 5 is connected to a yarn feed tension adjustment lead 18, and the fiber scrap collecting and adsorption roller 16 is used to adsorb fiber scraps, fluff and other impurities on the surface of the yarn to maintain the cleanliness of the yarn, and the yarn feed tension adjustment lead 18 can adjust the yarn tension under the control of the signal command of the external controller after the detection by the low-speed capacitive sensor detection end 7 and the analysis and feedback data. Among them, the preferred scheme is that the side of the dust removal box 5 is symmetrically installed with a drive installation structure 6, and the side end of the drive installation structure 6 passes through the dust removal box 5 and is connected to a fiber scrap collecting and adsorption roller 16, and the inner side end of the dust removal box 5 is connected to the yarn feed tension adjustment lead 18, and the side end of the yarn feed tension adjustment lead 18 and the low-speed capacitor The sensor detection end 7 is connected to the dust removal box 5, and the inner bottom end of the dust removal box 5 is symmetrically connected with a vacuum dust removal valve pipe 17. The side end of the vacuum dust removal valve pipe 17 is connected to a dust storage pump box movably installed on the side of the static dissipator 4. The yarn enters the dust removal box 5 from the yarn inlet tension adjustment lead 18. After being detected by the low-speed capacitive sensor detection end 7 as mentioned above, the yarn is tension-adjusted under the control of the signal command of the external controller that analyzes and feedbacks the data, and the stability of the yarn in the subsequent processing process is ensured. When the yarn enters the dust removal box 5, the fiber scrap collection adsorption roller 16 rotates under the drive of the driving installation structure 6, and adsorbs fiber scraps, fluff and other impurities on the surface of the yarn to keep the cleanliness of the yarn. Then the vacuum dust removal valve pipe 17 is opened when the yarn passes through, and the fiber scraps, dust and the like inside the dust removal box 5 are sucked into the dust storage pump box through negative pressure to keep the cleanliness of the inside of the dust removal box 5.

[0058] according to Figure 3 and Figure 4 As shown, a photoelectric sensor 123 is installed on the side of the yarn guide detection box 120, and a micro high-speed camera end 127 is installed on the top of the yarn guide detection box 120. The photoelectric sensor 123 is installed near the yarn outlet tube 126, and can monitor the passing state of the incoming yarn in real time, that is, it can detect the broken ends and yarn shortage of the yarn, and can immediately send out an alarm signal. The micro high-speed camera end 127 can be used to capture a high-definition image of the yarn surface, and through high-speed shooting, record the microstructure of the medium and fine thickness, hairiness or nodules of the yarn transmission, and then the tested image data The data are transmitted to an external controller to record and analyze the yarn quality and identify the status of yarn surface defects. In a preferred embodiment, a fixed mounting frame 121 is installed on the side of the yarn guide detection box 120, and a horizontal rail 124 is installed on the side end of the fixed mounting frame 121. The side end of the yarn guide detection box 120 is connected to a yarn feed tube 125, and the yarn enters the yarn guide detection box 120 straightly from the yarn feed tube 125. Then the horizontal rail 124 is used to drive the telescopic guide rod 191 and the structure it carries and connects to be synchronously adjusted to the two ends of the maximum upper and lower bands generated at the center of the yarn.

[0059] according to Figure 5 and Figure 6 As shown, the side end of the slotted frame 192 is fastened to the telescopic guide rod 191, and a driving control motor 193 is installed on the side of the slotted frame 192. The output end of the driving control motor 193 passes through the internal connection of the slotted frame 192 and is connected to a double convex rotating rod 194. The top and bottom of the double convex rotating rod 194 are hinged with a rotating curved rod 195. The driving control motor 193 is used to provide a driving force to drive the double convex rotating rod 194 to rotate. The rotational motion of the double convex rotating rod 194 is converted into a reciprocating swing of the rotating curved rod 195. The swing of the rotating curved rod 195 can make the sliding edge detection frame 197 slide and adjust in the sliding dovetail groove 196 opened on the top and bottom surfaces of the slotted frame 192, so that multiple groups of contact stress sensors 198 contact the edge of the yarn. In a preferred embodiment, the side end of the inner sliding seat 128 is fastened It is connected to a distance telescopic guide rod 191, and the side end of the distance telescopic guide rod 191 is fastened to a slotted frame 192. A driving control motor 193 is installed on the side of the slotted frame 192. The output end of the driving control motor 193 passes through the interior of the slotted frame 192 and is connected to a double convex rotating rod 194. The top and bottom of the double convex rotating rod 194 are hinged with a rotating curved rod 195. When the distance telescopic guide rod 191 is driven by the inner sliding seat 128 to move and adjust to the preset starting position of the detection yarn, the distance telescopic guide rod 191 is started, and drives the slotted frame 192 and the structure it carries and connects to synchronously extend to the upper and lower ends of the yarn. Then, the driving control motor 193 drives the double convex rotating rod 194 to rotate through its output end, and the rotational motion of the double convex rotating rod 194 is converted into the reciprocating swing of the rotating curved rod 195.

[0060] according to Figure 1 and Figure 2As shown, the other side end of the low-speed capacitive sensor detection end 7 is connected to a yarn feeding drying tube 9, and the side end of the yarn feeding drying tube 9 is connected to a pretreatment yarn line device 10, and the side end of the pretreatment yarn line device 10 is connected to a yarn feeding strip adsorption duct 11, and the yarn feeding strip adsorption duct 11 can use negative pressure to adsorb the yarn, and the pretreatment yarn line device 10 is used for preliminary tension adjustment, diameter adjustment or cleaning of the yarn. In a preferred embodiment, the other side end of the low-speed capacitive sensor detection end 7 is connected to a yarn feeding drying tube 9, and the side end of the yarn feeding drying tube 9 is connected to a pretreatment yarn line device 10, and the side end of the pretreatment yarn line device 10 is connected to a yarn feeding strip adsorption duct 11, and the yarn is sucked from the yarn feeding strip adsorption duct 11 by negative pressure. The yarn is pressed and adsorbed to ensure the straightness and stability of the yarn during the transportation process and avoid the twisting or knotting of the yarn. Then the yarn is sent to the pre-treatment yarn device 10, so that the yarn is preliminarily tension-adjusted, diameter-adjusted or cleaned in the pre-treatment yarn device 10 to ensure the uniformity and stability of the yarn in subsequent processing. Then the yarn is guided to the yarn feeding drying tube 9, and the yarn is dried by hot air or infrared radiation to remove moisture from the surface of the yarn to ensure the dryness of the yarn. After that, the yarn enters the low-speed capacitive sensor detection end 7 to simulate the low-speed spinning process to perform preliminary testing on the yarn, and the recorded and analyzed data is transmitted to the external controller for storage.

[0061] according to Figure 1As shown, the side end of the yarn guide detection box 120 is connected to the adsorption and guiding pump tube 13, and the side end frame of the adsorption and guiding pump tube 13 is installed with a winding motor 14, and the bottom output end of the winding motor 14 is connected with a winding roller 15. When the yarn enters, the adsorption and guiding pump tube 13 is used to generate negative pressure inside, so that the negative pressure inside the yarn inlet adsorption duct 11 is synchronously generated to adsorb the yarn and guide the yarn. The winding motor 14 is started under the command of the external controller to drive the winding roller 15 to rotate, so that the yarn is evenly wound on the winding roller 15 to form a yarn roll, and the yarn spinning process at low speed or high speed can be simulated, which can be controlled by the rotation speed of the winding motor 14 and the adsorption strength of the adsorption and guiding pump tube 13, so as to further form a yarn evenness test operation, among which the preferred The solution is that the side end of the yarn guide detection box 120 is connected to the adsorption and guiding pump tube 13, and the side end frame of the adsorption and guiding pump tube 13 is installed with a winding motor 14, and the bottom output end of the winding motor 14 is connected with a winding roller 15, and the negative pressure is generated inside the adsorption and guiding pump tube 13 to adsorb the yarn to ensure the straightness and stability of the yarn during the transportation process, and the winding motor 14 is started under the command of the external controller to drive the winding roller 15 to rotate, and the yarn conveyed by the adsorption and guiding pump tube 13 is adsorbed so that the yarn is evenly wound on the winding roller 15 to form a yarn roll, and the above-mentioned simulated yarn spinning process in the low-speed or high-speed process can be controlled by the rotation speed of the winding motor 14 and the adsorption strength of the adsorption and guiding pump tube 13, so as to further form a yarn evenness test operation.

[0062] The wiring diagram of the anti-static device 4, the low-speed capacitive sensor detection end 7, the pre-treatment yarn line meter 10, the photoelectric sensor 123, the yarn feeding tension adjustment lead 18, the drive control motor 193, the contact stress sensor 198, the stress counter 199, the Fourier transform real-time detector 2094, the tactile sensor contact piece 2096, the fluctuation monitoring value table 2097 and the capacitive sensor chip 2099 in the present invention belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the anti-static device 4, the low-speed capacitive sensor detection end 7, the pre-treatment yarn line meter 10, the photoelectric sensor 123, the yarn feeding tension adjustment lead 18, the drive control motor 193, the contact stress sensor 198, the stress counter 199, the Fourier transform real-time detector 2094, the tactile sensor contact piece 2096, the fluctuation monitoring value table 2097 and the capacitive sensor chip 2099 are no longer explained in detail.

[0063] The method of use and working principle of this device are as follows: first, negative pressure is generated inside the adsorption and guide pump tube 13 to adsorb the yarn, ensuring the straightness and stability of the yarn during transportation, and the winding motor 14 is started under the command of the external controller to drive the winding roller 15 to rotate, and the yarn delivered by the adsorption and guide pump tube 13 is adsorbed so that the yarn is evenly wound on the winding roller 15 to form a yarn roll, and the subsequent simulation of the yarn spinning process in the low-speed or high-speed process can be controlled by the rotation speed of the winding motor 14 and the adsorption strength of the adsorption and guide pump tube 13, so as to further form a yarn evenness test operation, and then the yarn is adsorbed by negative pressure from the yarn inlet adsorption duct 11 to ensure the straightness and stability of the yarn during transportation, and avoid the twisting or After being knotted, the yarn is sent to the pre-treatment yarn device 10, so that the yarn is pre-treated in the pre-treatment yarn device 10, such as preliminary tension adjustment, diameter adjustment or cleaning, to ensure the uniformity and stability of the yarn in subsequent processing. Then the yarn is guided to the yarn feeding drying tube 9, and the yarn is dried by hot air or infrared radiation to remove moisture on the surface of the yarn to ensure the dryness of the yarn. After that, the yarn enters the low-speed capacitive sensor detection end 7, and the low-speed spinning process is simulated to perform a preliminary test on the yarn, and the recorded and analyzed data is transmitted to the external controller for storage. Then, when the yarn enters the impurity removal box 5, the power supply box 2 is controlled to supply power to the anti-static device 4, and the working state of the anti-static device 4 is started, so that the anti-static device 4 produces An electric field is generated, and the anti-static device 4 is moved back and forth on the linear guide 3 to the left and right, and the yarn passing through the dust removal box 5 is treated with anti-static treatment through the slot at the bottom of the dust removal box 5, thereby reducing dust and impurities adsorbed on the surface of the yarn, improving the cleanliness of the yarn, and reducing wire breakage or jumper, ensuring the stability of the yarn in the subsequent testing process. When the yarn enters the dust removal box 5 from the yarn feeding tension adjustment lead 18, after being detected by the low-speed capacitive sensor detection end 7 as mentioned above, the yarn is subjected to tension adjustment under the control of the signal command of the external controller that analyzes and feedbacks the data, and the stability of the yarn in the subsequent processing process is ensured. When the yarn enters the dust removal box 5, the fiber scrap collection and adsorption roller 16 rotates under the drive of the driving mounting structure 6, adsorbing the fiber scraps on the surface of the yarn, Impurities such as fluff are removed to maintain the cleanliness of the yarn. Then the vacuum valve tube 17 is opened when the yarn passes through, and the fiber scraps, dust, etc. inside the impurity removal box 5 are sucked into the dust storage pump box through negative pressure to keep the cleanliness of the inside of the impurity removal box 5. After that, the yarn enters the yarn guide detection box 120 straightly from the yarn inlet tube 125, and then the horizontal rail 124 is used to drive the distance telescopic guide rod 191 and the structure it carries and connects to be synchronously adjusted to the two ends of the maximum upper and lower bands generated at the center of the yarn. The photoelectric sensor 123 is installed near the yarn outlet tube 126, which can monitor the passing status of the yarn in real time, that is, it can detect the broken end of the yarn, the lack of yarn, etc., and can immediately send out an alarm signal, and the miniature high-speed camera end 127 is installed on the top of the yarn guide detection box 120,It can be used to capture high-definition images of the yarn surface, record the microstructure of the medium thickness, hairiness or nodules of the yarn transmission through high-speed shooting, and then transmit the tested image data to an external controller to record and analyze the yarn quality and identify the state of yarn surface defects. Secondly, when the distance telescopic guide rod 191 is driven by the inner sliding seat 128 to adjust the displacement to the preset starting position of the detection yarn, the distance telescopic guide rod 191 is started, and the slotted frame 192 and the structure it carries and connects are synchronously extended to the upper and lower ends of the yarn. Then the driving control motor 193 drives the double convex rotating rod 194 to rotate through its output end, and the rotational motion of the double convex rotating rod 194 is converted into the reciprocating swing of the rotating bent rod 195, and then the swing of the rotating bent rod 195 makes The sliding edge detection frame 197 slides and adjusts in the sliding dovetail groove 196 of the slotted frame 192, so that multiple groups of contact stress sensors 198 contact the edge of the yarn, and detects in real time the contact stress formed by the up and down fluctuating edges of the yarn when the yarn is in the motion state of the center section during the simulated high-speed spinning transmission process, and transmits the data to the stress counter table 199 in real time. The stress counter table 199 collects and records the data transmitted by the contact stress sensor 198, and judges the state of the yarn edge by analyzing the stress change, such as whether there is wear, breakage or unevenness, etc., and then through the cooperation of the short linear motor rail 201 and the sliding connection saddle 202, the sliding connection saddle 202 drives the related structure it carries to adjust the position, and its adjusted position The gear drive box 205 is then used to provide power, so that the threaded rod 204 rotates downward from the internal thread of the threaded sleeve 203. At the same time, when the two sets of threaded rods 204 drive the connecting sliding block 207 to form a counter-adjustment, the vertical slide rod 206 moves synchronously with the cooperation of the connecting sliding block 207. When the tactile sensor contact piece 2096 is located at the edge peak position of the yarn movement state of up and down fluctuation, the micro electric telescopic rod 209 is adjusted in real time according to the demand, driving the rack 2090 to extend forward, so that the rack 2090 drives the gear 2091 to rotate, so that the gear 2091 drives the wing edge 2092 and the connecting guide rod 2093 to perform fine adjustment, thereby making the touch sensor contact piece 2096 be located at the edge peak position of the yarn movement state of up and down fluctuation. The tactile sensor contact piece 2096 can more accurately contact the highest and lowest points of the fluctuation formed by the upper and lower ends of the yarn when the yarn is jumping during the simulated yarn spinning operation, so that the tactile sensor contact piece 2096 can detect the roughness or hardness surface of the yarn, and then collect and analyze the vibration data of the yarn, and identify the defect frequency through the Fourier transform real-time detector 2094, and convert and display the data of the Fourier transform real-time detector 2094 through the fluctuation monitoring value table 2097, which is conducive to the staff to detect the yarn uniformity state in real time, and in the whole process, the capacitive sensor chip 2099 can be used to continuously monitor the capacitance change of the yarn to improve the yarn in high-speed spinning and low-speed environments.The resulting dynamic change accuracy measurement effectively responds to the uniformity of the strip during high-speed production.

[0064] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Yarn evenness testing device, characterized in that: Included are: A low-speed capacitive sensor detection end (7) is used to simulate a low-speed spinning process to perform a preliminary test on the yarn, and transmit the recorded and analyzed data to an external controller for storage; A horizontal rail (124) is used to drive the telescopic guide rod (191) and the structure connected thereto to synchronously adjust to the two ends of the maximum upper and lower bands generated at the center of the yarn; A gear device is used to enable the tactile sensor contact piece (2096) to more accurately contact the highest and lowest points of the fluctuation formed by the upper and lower ends of the yarn when the yarn is jumping during the simulation of the spinning operation; A Fourier transform real-time detector (2094) capable of analyzing data of the roughness or hardness surface detection of the yarn based on the tactile sensor contact sheet (2096); A contact stress sensor (198) comprising: A slotting frame (192), a sliding edge detection frame (197), a stress counter (199) and a sliding dovetail groove (196); The contact stress sensor (198) is used to contact the edge of the yarn and detect in real time the contact stress formed by the upper and lower fluctuating edges of the yarn when the yarn is in a moving state of the center section during the simulated high-speed spinning transmission process, and transmit the data in real time to the stress counter (199); Two sets of short linear motor rails (201), a sliding connection saddle (202), a threaded sleeve (203), a threaded rod (204) and a gear drive box (205); The sliding connection saddle (202) is located inside the short linear motor rail (201) and slides to drive the threaded sleeve (203), the threaded rod (204) and the gear drive box (205) to synchronously move according to the positions of the two ends of the maximum upper and lower bands generated at the center of the yarn; The gear drive box (205) is used to provide power to drive the threaded rod (204) to rotate downward through the internal thread of the threaded sleeve (203) for adjustment; The side end of the slotting frame (192) is tightly connected to the telescopic guide rod (191); a driving control motor (193) is installed on the side of the slotting frame (192); the output end of the driving control motor (193) passes through the inside of the slotting frame (192) and is connected to a double convex rotating rod (194); the top and bottom of the double convex rotating rod (194) are both hinged with a rotating curved rod (195); the driving control motor (193) is used to provide a driving force to drive the double convex rotating rod (194) to rotate; the rotational motion of the double convex rotating rod (194) is converted into a reciprocating swing of the rotating curved rod (195); the swing of the rotating curved rod (195) can make the sliding edge detection frame (197) slide and adjust in the sliding dovetail groove (196) provided on the top and bottom surfaces of the slotting frame (192), so that multiple groups of contact stress sensors (198) contact the edge of the yarn; The side end of the yarn guide detection box (120) is connected to an adsorption and guide pump tube (13), and a winding motor (14) is installed on the side end frame of the adsorption and guide pump tube (13). The bottom output end of the winding motor (14) is connected to a winding roller (15). When the yarn enters, negative pressure is generated inside the adsorption and guide pump tube (13), so that negative pressure is synchronously generated inside the yarn inlet adsorption conduit (11) to adsorb the yarn and guide the yarn. The winding motor (14) is started under the instruction of an external controller to drive the winding roller (15) to rotate, so that the yarn is evenly wound on the winding roller (15) to form a yarn roll, and the yarn spinning process at a low speed or a high speed is simulated, which is controlled by the rotation speed of the winding motor (14) and the adsorption strength of the adsorption and guide pump tube (13), so as to facilitate further forming a yarn evenness test operation.

2. The yarn evenness testing device according to claim 1, characterized in that: The testing device comprises a stabilizing frame (1), a dust removal box (5), and a yarn tube (8). The side of the dust removal box (5) is installed with a low-speed capacitive sensor detection end (7). The dust removal box (5) is used to process the yarn passing through the dust removal box (5). The side end of the yarn tube (8) is connected to a yarn guide detection box (120), and the yarn tube (8) is used to guide the yarn to the yarn guide detection box (120).

3. The yarn evenness testing device according to claim 2, characterized in that: A drive mounting structure (6) is symmetrically mounted on the side of the impurity removal box (5); a side end of the drive mounting structure (6) penetrates the impurity removal box (5) and is connected to a fiber scrap collecting and adsorption roller (16); an inner side end of the impurity removal box (5) is connected to a yarn feed tension adjustment lead end (18); the fiber scrap collecting and adsorption roller (16) is used to adsorb fiber scraps and fluff impurities on the surface of the yarn to maintain the cleanliness of the yarn; the yarn feed tension adjustment lead end (18) can adjust the yarn tension under the control of a signal instruction of an external controller that analyzes and feeds back data after detection by the low-speed capacitive sensor detection end (7).

4. The yarn evenness testing device according to claim 3, characterized in that: A photoelectric sensor (123) is installed on the side of the yarn guide detection box (120), and a micro high-speed camera end (127) is installed on the top of the yarn guide detection box (120). The photoelectric sensor (123) is installed near the yarn outlet tube (126) and can monitor the passing state of the incoming yarn in real time. The micro high-speed camera end (127) can be used to capture high-definition images of the yarn surface, and record the microstructure of the medium thickness, hairiness or nodules of the yarn transmission through high-speed shooting, and then transmit the tested image data to an external controller to record and analyze the yarn quality and identify the state of yarn surface defects.

5. The yarn evenness testing device according to claim 4, characterized in that: The other side end of the low-speed capacitive sensor detection end (7) is connected to a yarn feed drying tube (9), the side end of the yarn feed drying tube (9) is connected to a pre-treatment yarn stripper (10), the side end of the pre-treatment yarn stripper (10) is connected to a yarn feed adsorption duct (11), the yarn feed adsorption duct (11) can use negative pressure to adsorb the yarn, and the pre-treatment yarn stripper (10) is used for preliminary tension adjustment, diameter adjustment or cleaning of the yarn.

6. The method of the yarn evenness test device is characterized in that: The yarn evenness test device according to any one of claims 1 to 5 is used, comprising the following steps: S1. First, the yarn to be tested enters the pre-treatment yarn stripper (10) from the yarn feeding adsorption conduit (11) for washing and pre-treatment, and enters the yarn feeding drying tube (9) for drying, and then enters the low-speed capacitive sensor detection end (7) to detect the yarn in a low-speed state. Next, after the yarn passes through the impurity removal box (5), it enters the yarn tube (8) and the yarn guide detection box (120); S2, when the yarn enters the yarn guide detection box (120), the tactile sensor contact pieces (2096) at both ends are adjusted to contact the top and bottom ends of the jumping yarn, and then the Fourier transform real-time detector (2094) and the capacitive sensor chip (2099) generate data for real-time monitoring; S3, then, the distance telescopic guide rod (191) and the structure carried by it are driven to adjust their positions through the horizontal rail (124) and the inner sliding seat (128), so that the stress counter (199) and the multiple groups of contact stress sensors (198) form a contact detection of the two ends of the maximum upper and lower bands generated at the center of the yarn during the transmission process; S4, and then cooperate with the photoelectric sensor (123) and the micro high-speed camera end (127) to facilitate the synchronous detection of the yarn, wherein the entry of the yarn is ensured by the adsorption of the adsorption guide pump tube (13) and the conduction traction of the winding motor (14) and the winding roller (15) to ensure real-time testing during the yarn entry process.

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