Yarn breakage alarm device for warp knitting fabric production

Abstract

The invention relates to the technical field of fabric warp knitting, in particular to a warp knitted fabric production thread breakage alarm device which comprises a controller, a detection assembly and an alarm assembly. The detection assembly comprises a detection pipe, a lead-in roller, a lead-out roller and a cleaning water tank, and a conductive film is arranged on the inner wall of the detection pipe; the yarn sequentially penetrates through the guide-in roller, the cleaning water tank, the yarn inlet, the yarn outlet and the guide-out roller; the yarn between the leading-in roller and the leading-out roller is subjected to a tension effect; when the yarn passes through the cleaning water tank, impurities on the yarn are cleaned, meanwhile, part of the impurities are left on the yarn, and the cleaned yarn is in the state that the yarn is soaked by water and does not drip water drops; the cleaning water tank is arranged to be matched with the tension effect of the leading-in roller and the leading-out roller on the yarn, the yarn is formed by weaving a plurality of fibers, if breakage occurs or part of the fibers are broken, water at the breakage position forms water drops which are splashed on the conductive film, and the conductivity of the conductive film is changed through the water drops; and the conductivity is increased by reusing impurities.

Description

Technical Field

[0001] The invention relates to the technical field of warp knitting fabrics, and in particular to a warp knitting fabric production line break alarm device. Background Art

[0002] A warp knitting machine uses one or several groups of parallel arranged yarns to feed the yarns into all the working needles of the machine in the warp direction, and simultaneously forms loops to form a knitted fabric. This method is called warp knitting, and the fabric is called warp knitted fabric.

[0003] Due to the characteristics of high speed and high efficiency, the demand for yarn is huge. Therefore, the stability of yarn transmission determines the production efficiency. Once the yarn breaks, the operator cannot perform wiring maintenance in time, which will greatly affect the production efficiency. In addition, the existing detection equipment is prone to cotton wool and dust accumulation in the working environment, which affects the detection accuracy and equipment accuracy, thereby affecting the detection efficiency of the equipment and the stability of the warp knitting machine. For example, when the photoelectric sensor is blocked, the detection effect is poor; at the same time, if a tension sensor is used, it is unknown where the wire breaks in the event of a break, and workers have to find the location of the break, which is very inconvenient; for this reason, we propose a warp knitting cloth production break alarm device that can detect yarn breakage or the possibility of breakage and then alarm while avoiding interference from cotton wool and dust. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a warp knitted fabric production break alarm device which can detect yarn breakage or the possibility of breakage and then give an alarm while avoiding interference from cotton wool and dust.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A warp knitted fabric production line break alarm device, used for detecting line breakage of yarn used in warp knitted fabric production, the warp knitted fabric production line break alarm device comprising a controller, a detection component and an alarm component; The detection assembly includes a detection tube, an introduction roller, an outlet roller, a cleaning water tank and a drying roller. The detection tube is placed horizontally, and an inlet and an outlet are arranged at both ends of the detection tube. A conductive film is arranged on the inner wall of the detection tube, and the conductive film is electrically connected to the controller; the introduction roller is arranged at the inlet, the outlet roller is arranged at the outlet, and the drying roller is located on the side of the outlet roller away from the outlet; the cleaning water tank is arranged between the introduction roller and the inlet; and there is water in the cleaning water tank; The alarm assembly includes an alarm, a marker and a marking plate, wherein the alarm and the marker are electrically connected to the controller respectively, the marking plate is arranged on a side of the drying roller away from the outlet, the marker is located directly above the marking plate, and a marking space is formed between the marker and the marking plate; The warp knitted fabric production line break alarm device comprises the following steps when in operation: the yarn is passed through an introduction roller, a cleaning water tank, a line inlet, a line outlet, a lead-out roller, a drying roller, and a marking space in sequence; the yarn between the introduction roller and the lead-out roller is subjected to the pulling force of the introduction roller and the lead-out roller; when the yarn passes through the cleaning water tank, impurities on the yarn are cleaned while some of the impurities are left on the yarn, and the cleaned yarn is in a state of being soaked in water and not dripping water droplets; the drying roller dries the yarn passing through; When the yarn passes through the detection tube, the controller determines whether the yarn in the detection tube is broken or has broken. The detection process includes: when the yarn in the detection tube is broken, partially broken, or has broken due to the pulling force of the introduction roller and the outlet roller, the pulling force generated by the pulling force is less than the limit of the pulling force that the yarn can withstand; when the yarn is broken or partially broken, the water droplets containing impurities on the yarn are splashed onto the conductive film on the inner wall of the detection tube by the energy generated when the yarn is broken, causing a potential change; when the yarn is broken, the yarn containing water falls on the conductive film on the inner wall of the detection tube under the action of gravity, causing a potential change; the judgment process includes: if there is a potential change, it is regarded as a break or a possibility of a break, and the controller issues an alarm through an alarm; at the same time, the controller obtains the position of the potential change and the running speed of the yarn, calculates the distance from the position of the potential change to the marking space, divides the distance by the running speed to obtain the waiting time, and the controller controls the marker to work after the waiting time to mark the break or the possibility of a break.

[0006] Preferably, the bottoms of both ends of the detection tube are provided with an air inlet and an air outlet respectively, and a fan is provided on the air inlet, and the fan is electrically connected to the controller; When there is a potential change, the controller starts the fan to blow gas into the air inlet.

[0007] Preferably, when the warp knitted fabric production break alarm device is in a shutdown state, the controller starts the fan to blow gas into the air inlet.

[0008] Preferably, a filter screen is provided at the air inlet.

[0009] Preferably, the air outlet is arranged downward.

[0010] Preferably, the detection tube includes an upper arc-shaped piece and a lower arc-shaped piece, which are arranged upper and lower and detachably connected to form a tubular detection tube; there are two conductive films, which are respectively arranged on the inner wall of the upper arc-shaped piece and the inner wall of the lower arc-shaped piece, and the two conductive films are respectively electrically connected to the controller.

[0011] Preferably, the horizontal plane height of the drying roller is lower than the horizontal plane height of the lead-out roller, and when the yarn passes through the lead-out roller, it passes through the upper surface of the lead-out roller, and when the yarn passes through the drying roller, it passes through the lower surface of the drying roller and then enters the marking space.

[0012] Preferably, the conductive film is an ITO conductive film.

[0013] Preferably, the ITO conductive film includes an X-axis direction film, an insulating layer and a Y-axis direction film arranged from top to bottom.

[0014] Preferably, the ITO conductive film includes a Y-axis direction film, and the Y-axis direction film and the yarn are perpendicular to each other.

[0015] The beneficial effects of the present invention are as follows: by setting a cleaning water tank to cooperate with the introduction roller and the outlet roller to exert a pulling force on the yarn, combined with the characteristic that the yarn is woven from multiple fibers, the pulling force utilizes the elasticity of the yarn itself to pull, if there is a pulling force less than the limit that the yarn can withstand, or if part of the fibers are broken, combined with the characteristic that impurities are adsorbed on the yarn by water, water at the break forms water droplets and splashes out. At this time, the water droplets also carry certain impurities. The water droplets splash on the conductive film, and the water droplets cause the conductivity of the conductive film to change, which can be detected by the controller, and then the impurities it carries are used to increase the conductivity, ensuring that the degree of potential change is greater, thereby improving the yarn quality. Improve the effectiveness of detection and avoid missed detection due to too low conductivity of water droplets; this technical solution is the same as the principle of the mobile phone screen being out of control when water droplets fall on the mobile phone screen in daily life; and through the splashing of water droplets at the break, the approximate position of the break can be identified, which is convenient for subsequent marking by the marker, shortening the time for the staff to find the broken line again and improving the efficiency of rewiring; by cleaning the water tank, the yarn can be cleaned, which can greatly reduce the pollution caused by dust and cotton wool, and the water-absorbent yarn makes the impurities and fibers on the yarn be adsorbed on the yarn by the water, thereby reducing the possibility of entering the detection tube, reducing the maintenance frequency of the detection tube, and thus improving the production efficiency of warp knitted fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a warp knitted fabric production line break alarm device according to a specific embodiment of the present invention; Explanation of the numbers: 1. Detection tube; 11. Conductive film; 12. Air inlet; 13. Air outlet; 2. Introduction roller; 3. Export roller; 4. Cleaning water tank; 5. Drying roller; 6. Marker; 7. Marking plate; 8. Marking space. DETAILED DESCRIPTION

[0017] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0018] Please refer to Figure 1 , a warp knitted fabric production broken line alarm device, used for detecting the broken line of the yarn used in the warp knitted fabric production, the warp knitted fabric production broken line alarm device comprises a controller, a detection component and an alarm component; The detection assembly includes a detection tube 1, an introduction roller 2, an outlet roller 3, a cleaning water tank 4 and a drying roller 5. The detection tube 1 is placed horizontally, and an inlet and an outlet are provided at both ends of the detection tube 1. A conductive film 11 is provided on the inner wall of the detection tube 1, and the conductive film 11 is electrically connected to the controller; the introduction roller 2 is provided at the inlet, the outlet roller 3 is provided at the outlet, and the drying roller 5 is located on the side of the outlet roller 3 away from the outlet; the cleaning water tank 4 is provided between the introduction roller 2 and the inlet; and there is water in the cleaning water tank 4; The alarm assembly includes an alarm, a marker 6 and a marking plate 7. The alarm and the marker 6 are electrically connected to the controller respectively. The marking plate 7 is arranged on a side of the drying roller 5 away from the outlet. The marker 6 is located directly above the marking plate 7. A marking space 8 is formed between the marker 6 and the marking plate 7. The warp knitted fabric production line break alarm device is operated as follows: the yarn is sequentially passed through the introduction roller 2, the cleaning water tank 4, the line inlet, the line outlet, the lead-out roller 3, the drying roller 5, and the marking space 8; the yarn between the introduction roller 2 and the lead-out roller 3 is subjected to the pulling force of the introduction roller 2 and the lead-out roller 3; when the yarn passes through the cleaning water tank 4, the impurities on the yarn are cleaned and some of the impurities are left on the yarn, and the cleaned yarn is in a state of being soaked in water and not dripping water; the drying roller 5 dries the passing yarn; When the yarn passes through the detection tube 1, the controller determines whether the yarn in the detection tube 1 is broken or has broken. The detection process includes: when the yarn in the detection tube 1 is broken, partially broken, or has broken due to the pulling force of the introduction roller 2 and the outlet roller 3, the pulling force generated by the pulling force is less than the limit of the pulling force that the yarn can withstand; when the yarn is broken or partially broken, the water droplets containing impurities on the yarn are splashed onto the conductive film 11 on the inner wall of the detection tube 1 by the energy generated when the yarn is broken, causing a potential change; when the yarn is broken, the yarn containing water falls on the conductive film 11 on the inner wall of the detection tube 1 under the action of gravity, causing a potential change; the judgment process includes: if there is a potential change, it is regarded as a break or a possibility of a break, and the controller issues an alarm through the alarm; at the same time, the controller obtains the position of the potential change and the running speed of the yarn, calculates the distance from the position of the potential change to the marking space 8, divides the distance by the running speed to obtain the waiting time, and the controller controls the marker 6 to work after the waiting time to mark the break or the possibility of a break.

[0019] From the above description, it can be known that by setting the cleaning water tank 4 to cooperate with the introduction roller 2 and the outlet roller 3 to exert a pulling force on the yarn, combined with the characteristic that the yarn is woven from multiple fibers, the pulling force utilizes the elasticity of the yarn itself to pull. If there is a pulling force less than the limit that the yarn can withstand, it will still break or part of the fibers will break. Combined with the characteristic that impurities are adsorbed on the yarn by water, the water at the break will form water droplets and splash out. At this time, the water droplets also carry certain impurities. The water droplets splash on the conductive film 11, and the water droplets cause the conductivity of the conductive film 11 to change, which can be detected by the controller, and then the impurities it carries are used to increase the conductivity, ensuring that the degree of potential change is greater, thereby improving the performance of the conductive film 11. The effectiveness of detection is improved to avoid missed detection due to too low conductivity of water droplets. This technical solution is based on the same principle as the uncontrolled screen of a mobile phone when water droplets fall on the screen in daily life. The approximate position of the break can be identified by splashing water droplets at the break, which is convenient for subsequent marking by the marker 6, shortening the time for staff to find the break position again and improving the efficiency of rewiring. The yarn can be cleaned by cleaning the water tank 4, which can greatly reduce the pollution caused by dust and cotton wool. The impurities and fibers on the yarn after absorbing water are adsorbed on the yarn by the water body, thereby reducing the possibility of entering the detection tube 1 and reducing the maintenance frequency of the detection tube 1, thereby improving the production efficiency of the warp knitted fabric.

[0020] Furthermore, the bottoms of both ends of the detection tube 1 are provided with an air inlet 12 and an air outlet 13, respectively, and the air inlet 12 is provided with a fan, and the fan is electrically connected to the controller; When there is a potential change, the controller starts the fan to blow gas into the air inlet 12.

[0021] From the above description, it can be seen that when there is a change in potential, it proves that there is a possibility of a broken line or a broken line. It also means that water droplets or water-containing yarns are connected to the conductive film 11, so that there is water and impurities on the surface of the conductive film 11. By blowing, the water droplets evaporate quickly, and the impurities will turn into dust after losing water, and will be discharged along the air outlet 13 under the guidance of the air flow; the air inlet 12 and the air outlet 13 are respectively arranged at the bottom of the two ends. Since the air flow is diffuse, the water droplets can be blown dry, and the dust loses the adhesion of the water droplets and will fall off by itself under the action of gravity, so there is no need to set it on the top.

[0022] Furthermore, when the warp knitted fabric production break alarm device is in a shutdown state, the controller starts the fan to blow gas into the air inlet 12.

[0023] From the above description, it can be seen that when the machine is stopped, it can be cleaned by blowing air to ensure cleanliness and thus ensure the accuracy of the detection.

[0024] Furthermore, a filter screen is provided at the air inlet 12 .

[0025] From the above description, it can be seen that dust or lint can be blown in conveniently through the filter.

[0026] Furthermore, the air outlet 13 is arranged downward.

[0027] It can be seen from the above description that by arranging the air outlet 13 downward, dust, cotton wool, etc. can be easily introduced into the detection tube 1 through the air outlet 13 .

[0028] Furthermore, the detection tube 1 includes an upper arc-shaped piece and a lower arc-shaped piece, which are arranged up and down and detachably connected to form a tubular detection tube 1; there are two conductive films 11, and the two conductive films 11 are respectively arranged on the inner wall of the upper arc-shaped piece and the inner wall of the lower arc-shaped piece, and the two conductive films 11 are respectively electrically connected to the controller.

[0029] From the above description, it can be seen that the detection tube 1 is formed by detachably connecting the upper arc piece and the lower arc piece, so that the detection tube 1 can be opened, which is convenient for threading and maintenance.

[0030] Furthermore, the horizontal plane height of the drying roller 5 is lower than the horizontal plane height of the lead-out roller 3. When the yarn passes through the lead-out roller 3, it passes through the upper surface of the lead-out roller 3. When the yarn passes through the drying roller 5, it passes through the lower surface of the drying roller 5 and then enters the marking space 8.

[0031] From the above description, it can be seen that the lead-out roller 3 is higher than the drying roller 5. When the yarn passes through the drying roller 5, it passes under the drying roller 5, so that when the yarn is squeezed with the drying roller 5, the moisture will not flow back to the lead-out roller 3, thereby ensuring the detection effect.

[0032] Furthermore, the conductive film 11 is an ITO conductive film 11 .

[0033] From the above description, it can be seen that by adopting the ITO conductive film 11, that is, the touch film of the mobile phone, the product has mature technology, low manufacturing cost and convenient detection.

[0034] Furthermore, the ITO conductive film 11 includes an X-axis direction film, an insulating layer and a Y-axis direction film arranged from top to bottom.

[0035] From the above description, it can be seen that through the X-axis direction film, the insulating layer and the Y-axis direction film, it is the same as the touch recognition of the mobile phone screen and can accurately identify the specific position.

[0036] Furthermore, the ITO conductive film 11 includes a Y-axis direction film, and the Y-axis direction film is perpendicular to the yarn.

[0037] From the above description, it can be seen that by making the membrane and the yarn perpendicular to each other in the Y-axis direction, the approximate position can be identified, thereby reducing costs.

[0038] The yarn after cleaning is in a state of being soaked in water without dripping water. This is confirmed after experiments based on the type of yarn, yarn speed, humidity, etc., and can be adaptively adjusted as needed.

[0039] The marker 6 is a liquid sprayer, which can spray a color or a distinguishable color onto the yarn.

[0040] Embodiment 1 A warp knitted fabric production line break alarm device, used for detecting line breakage of yarn used in warp knitted fabric production, the warp knitted fabric production line break alarm device comprising a controller, a detection component and an alarm component; The detection assembly includes a detection tube 1, an introduction roller 2, an outlet roller 3, a cleaning water tank 4 and a drying roller 5. The detection tube 1 is placed horizontally, and an inlet and an outlet are provided at both ends of the detection tube 1. A conductive film 11 is provided on the inner wall of the detection tube 1, and the conductive film 11 is electrically connected to the controller; the introduction roller 2 is provided at the inlet, the outlet roller 3 is provided at the outlet, and the drying roller 5 is located on the side of the outlet roller 3 away from the outlet; the cleaning water tank 4 is provided between the introduction roller 2 and the inlet; and there is water in the cleaning water tank 4; The alarm assembly includes an alarm, a marker 6 and a marking plate 7. The alarm and the marker 6 are electrically connected to the controller respectively. The marking plate 7 is arranged on a side of the drying roller 5 away from the outlet. The marker 6 is located directly above the marking plate 7. A marking space 8 is formed between the marker 6 and the marking plate 7. The warp knitted fabric production line break alarm device is operated as follows: the yarn is sequentially passed through the introduction roller 2, the cleaning water tank 4, the line inlet, the line outlet, the lead-out roller 3, the drying roller 5, and the marking space 8; the yarn between the introduction roller 2 and the lead-out roller 3 is subjected to the pulling force of the introduction roller 2 and the lead-out roller 3; when the yarn passes through the cleaning water tank 4, the impurities on the yarn are cleaned and some of the impurities are left on the yarn, and the cleaned yarn is in a state of being soaked in water and not dripping water; the drying roller 5 dries the passing yarn; When the yarn passes through the detection tube 1, the controller determines whether the yarn in the detection tube 1 is broken or has broken. The detection process includes: when the yarn in the detection tube 1 is broken, partially broken, or has broken due to the pulling force of the introduction roller 2 and the outlet roller 3, the pulling force generated by the pulling force is less than the limit of the pulling force that the yarn can withstand; when the yarn is broken or partially broken, the water droplets containing impurities on the yarn are splashed onto the conductive film 11 on the inner wall of the detection tube 1 by the energy generated when the yarn is broken, causing a potential change; when the yarn is broken, the yarn containing water falls on the conductive film 11 on the inner wall of the detection tube 1 under the action of gravity, causing a potential change; the judgment process includes: if there is a potential change, it is regarded as a break or a possibility of a break, and the controller issues an alarm through the alarm; at the same time, the controller obtains the position of the potential change and the running speed of the yarn, calculates the distance from the position of the potential change to the marking space 8, divides the distance by the running speed to obtain the waiting time, and the controller controls the marker 6 to work after the waiting time to mark the break or the possibility of a break.

[0041] The bottom of both ends of the detection tube 1 are provided with an air inlet 12 and an air outlet 13, respectively. The air inlet 12 is provided with a fan, and the fan is electrically connected to the controller; When there is a potential change, the controller starts the fan to blow gas into the air inlet 12.

[0042] When the warp knitted fabric production break alarm device is in a shutdown state, the controller starts the fan to blow gas into the air inlet 12.

[0043] The air inlet 12 is provided with a filter screen.

[0044] The air outlet 13 is arranged downward.

[0045] The detection tube 1 includes an upper arc-shaped piece and a lower arc-shaped piece, which are arranged up and down and detachably connected to form a tubular detection tube 1; there are two conductive films 11, which are respectively arranged on the inner wall of the upper arc-shaped piece and the inner wall of the lower arc-shaped piece, and the two conductive films 11 are electrically connected to the controller respectively.

[0046] The horizontal plane height of the drying roller 5 is lower than the horizontal plane height of the lead-out roller 3. When the yarn passes through the lead-out roller 3, it passes through the upper surface of the lead-out roller 3. When the yarn passes through the drying roller 5, it passes through the lower surface of the drying roller 5 and then enters the marking space 8.

[0047] The conductive film 11 is an ITO conductive film 11 .

[0048] The ITO conductive film 11 includes an X-axis direction film, an insulating layer and a Y-axis direction film arranged from top to bottom.

[0049] The yarn after cleaning is in a state of being soaked in water without dripping water. This is confirmed after experiments based on the type of yarn, yarn speed, humidity, etc., and can be adaptively adjusted as needed.

[0050] The marker 6 is a liquid sprayer, which can spray a color or a distinguishable color onto the yarn.

[0051] Embodiment 2 A warp knitted fabric production line break alarm device, used for detecting line breakage of yarn used in warp knitted fabric production, the warp knitted fabric production line break alarm device comprising a controller, a detection component and an alarm component; The detection assembly includes a detection tube 1, an introduction roller 2, an outlet roller 3, a cleaning water tank 4 and a drying roller 5. The detection tube 1 is placed horizontally, and an inlet and an outlet are provided at both ends of the detection tube 1. A conductive film 11 is provided on the inner wall of the detection tube 1, and the conductive film 11 is electrically connected to the controller; the introduction roller 2 is provided at the inlet, the outlet roller 3 is provided at the outlet, and the drying roller 5 is located on the side of the outlet roller 3 away from the outlet; the cleaning water tank 4 is provided between the introduction roller 2 and the inlet; and there is water in the cleaning water tank 4; The alarm assembly includes an alarm, a marker 6 and a marking plate 7. The alarm and the marker 6 are electrically connected to the controller respectively. The marking plate 7 is arranged on a side of the drying roller 5 away from the outlet. The marker 6 is located directly above the marking plate 7. A marking space 8 is formed between the marker 6 and the marking plate 7. The warp knitted fabric production line break alarm device is operated as follows: the yarn is sequentially passed through the introduction roller 2, the cleaning water tank 4, the line inlet, the line outlet, the lead-out roller 3, the drying roller 5, and the marking space 8; the yarn between the introduction roller 2 and the lead-out roller 3 is subjected to the pulling force of the introduction roller 2 and the lead-out roller 3; when the yarn passes through the cleaning water tank 4, the impurities on the yarn are cleaned and some of the impurities are left on the yarn, and the cleaned yarn is in a state of being soaked in water and not dripping water; the drying roller 5 dries the passing yarn; When the yarn passes through the detection tube 1, the controller determines whether the yarn in the detection tube 1 is broken or has broken. The detection process includes: when the yarn in the detection tube 1 is broken, partially broken, or has broken due to the pulling force of the introduction roller 2 and the outlet roller 3, the pulling force generated by the pulling force is less than the limit of the pulling force that the yarn can withstand; when the yarn is broken or partially broken, the water droplets containing impurities on the yarn are splashed onto the conductive film 11 on the inner wall of the detection tube 1 by the energy generated when the yarn is broken, causing a potential change; when the yarn is broken, the yarn containing water falls on the conductive film 11 on the inner wall of the detection tube 1 under the action of gravity, causing a potential change; the judgment process includes: if there is a potential change, it is regarded as a break or a possibility of a break, and the controller issues an alarm through the alarm; at the same time, the controller obtains the position of the potential change and the running speed of the yarn, calculates the distance from the position of the potential change to the marking space 8, divides the distance by the running speed to obtain the waiting time, and the controller controls the marker 6 to work after the waiting time to mark the break or the possibility of a break.

[0052] The bottom of both ends of the detection tube 1 are provided with an air inlet 12 and an air outlet 13, respectively. The air inlet 12 is provided with a fan, and the fan is electrically connected to the controller; When there is a potential change, the controller starts the fan to blow gas into the air inlet 12.

[0053] When the warp knitted fabric production break alarm device is in a shutdown state, the controller starts the fan to blow gas into the air inlet 12.

[0054] The air inlet 12 is provided with a filter screen.

[0055] The air outlet 13 is arranged downward.

[0056] The horizontal plane height of the drying roller 5 is lower than the horizontal plane height of the lead-out roller 3. When the yarn passes through the lead-out roller 3, it passes through the upper surface of the lead-out roller 3. When the yarn passes through the drying roller 5, it passes through the lower surface of the drying roller 5 and then enters the marking space 8.

[0057] The conductive film 11 is an ITO conductive film 11 .

[0058] The ITO conductive film 11 includes a Y-axis direction film, and the Y-axis direction film is perpendicular to the yarn.

[0059] The yarn after cleaning is in a state of being soaked in water without dripping water. This is confirmed after experiments based on the type of yarn, yarn speed, humidity, etc., and can be adaptively adjusted as needed.

[0060] The marker 6 is a liquid sprayer, which can spray a color or a distinguishable color onto the yarn.

[0061] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A warp knitted fabric production break alarm device, used for detecting the breakage of yarn used in warp knitted fabric production, characterized in that: The warp knitted fabric production break alarm device comprises a controller, a detection component and an alarm component; The detection assembly includes a detection tube, an introduction roller, an outlet roller, a cleaning water tank and a drying roller. The detection tube is placed horizontally, and an inlet and an outlet are arranged at both ends of the detection tube. A conductive film is arranged on the inner wall of the detection tube, and the conductive film is electrically connected to the controller; the introduction roller is arranged at the inlet, the outlet roller is arranged at the outlet, and the drying roller is located on the side of the outlet roller away from the outlet; the cleaning water tank is arranged between the introduction roller and the inlet; and there is water in the cleaning water tank; The alarm assembly includes an alarm, a marker and a marking plate, wherein the alarm and the marker are electrically connected to the controller respectively, the marking plate is arranged on a side of the drying roller away from the outlet, the marker is located directly above the marking plate, and a marking space is formed between the marker and the marking plate; The warp knitted fabric production line break alarm device comprises the following steps when in operation: the yarn is passed through an introduction roller, a cleaning water tank, a line inlet, a line outlet, a lead-out roller, a drying roller, and a marking space in sequence; the yarn between the introduction roller and the lead-out roller is subjected to the pulling force of the introduction roller and the lead-out roller; when the yarn passes through the cleaning water tank, impurities on the yarn are cleaned while some of the impurities are left on the yarn, and the cleaned yarn is in a state of being soaked in water and not dripping water droplets; the drying roller dries the yarn passing through; When the yarn passes through the detection tube, the controller determines whether the yarn in the detection tube is broken or has broken. The detection process includes: when the yarn in the detection tube is broken, partially broken, or has broken due to the pulling force of the introduction roller and the outlet roller, the pulling force generated by the pulling force is less than the limit of the pulling force that the yarn can withstand; when the yarn is broken or partially broken, the water droplets containing impurities on the yarn are splashed onto the conductive film on the inner wall of the detection tube by the energy generated when the yarn is broken, causing a potential change; when the yarn is broken, the yarn containing water falls on the conductive film on the inner wall of the detection tube under the action of gravity, causing a potential change; the judgment process includes: if there is a potential change, it is regarded as a break or a possibility of a break, and the controller issues an alarm through an alarm; at the same time, the controller obtains the position of the potential change and the running speed of the yarn, calculates the distance from the position of the potential change to the marking space, divides the distance by the running speed to obtain the waiting time, and the controller controls the marker to work after the waiting time to mark the break or the possibility of a break.

2. The warp knitted fabric production break alarm device according to claim 1, characterized in that: The bottoms of both ends of the detection tube are provided with an air inlet and an air outlet respectively, and a fan is provided on the air inlet, and the fan is electrically connected to the controller; When there is a potential change, the controller starts the fan to blow gas into the air inlet.

3. The warp knitted fabric production break alarm device according to claim 2, characterized in that: When the warp knitted fabric production break alarm device is in a shutdown state, the controller starts the fan to blow gas into the air inlet.

4. The warp knitted fabric production break alarm device according to claim 2, characterized in that: A filter screen is arranged at the air inlet.

5. The warp knitted fabric production break alarm device according to claim 2, characterized in that: The air outlet is arranged downward.

6. The warp knitted fabric production break alarm device according to claim 1, characterized in that: The detection tube includes an upper arc-shaped piece and a lower arc-shaped piece, which are arranged up and down and detachably connected to form a tubular detection tube; there are two conductive films, which are respectively arranged on the inner wall of the upper arc-shaped piece and the inner wall of the lower arc-shaped piece, and the two conductive films are electrically connected to the controller respectively.

7. The warp knitted fabric production break alarm device according to claim 1, characterized in that: The horizontal plane where the drying roller is located is lower than the horizontal plane where the lead-out roller is located. When the yarn passes through the lead-out roller, it passes through the upper surface of the lead-out roller. When the yarn passes through the drying roller, it passes through the lower surface of the drying roller and then enters the marking space.

8. The warp knitted fabric production break alarm device according to claim 1, characterized in that: The conductive film is an ITO conductive film.

9. The warp knitted fabric production break alarm device according to claim 8, characterized in that: The ITO conductive film includes an X-axis direction film, an insulating layer and a Y-axis direction film arranged from top to bottom.

10. The warp knitted fabric production break alarm device according to claim 8, characterized in that: The ITO conductive film includes a Y-axis direction film, and the Y-axis direction film is perpendicular to the yarn.

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