CN112229823A - Online real-time detection device and method for fly waste of tow production line - Google Patents
Online real-time detection device and method for fly waste of tow production line Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 54
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Abstract
The invention relates to an online real-time detection device and method for fly waste in a tow production line, and belongs to the technical field of tow production and manufacturing. The device comprises a fly waste collecting device; a flying flower blowing device is arranged at the bottom in the flying flower collecting device; the flying blowing device is connected with the first pressure stabilizing valve and the air filter through pipelines; the top in the flying flower collecting device is provided with a flying flower sampling port; the flying sample port is connected with the detection box body through a pipeline; a flying sensor is arranged in the detection box body; the detection box body is also connected with a vacuum generator through an air rotor flow meter; the air outlet end of the air filter is connected with the vacuum generator through a third pressure stabilizing valve; the system also comprises a programmable logic controller and a computer which are connected with each other; and the control end of the programmable logic controller is connected with the flying sensor. The invention can realize real-time online detection of the flying amount of the silk ribbon on the silk bundle production line, obtain the flying data in real time, feed the flying data back to the production process to control the flying quality, and is easy to popularize and apply.
Description
Technical Field
The invention belongs to the technical field of tow production and manufacturing, and particularly relates to a device and a method for detecting flying marks on a tow production line in real time on line.
Background
Fly is short fiber and scrap generated in the production and use processes of the tows, and is an important index for measuring the quality of the tows. Too much fly can affect the quality stability of the tow product, the sanitary cleaning burden during tow production and use is increased, and the fly floats in the air to form dust, thereby causing occupational health hazard risk to personnel. The control of the fly amount of the tows is one of the important tasks of tow manufacturers.
The method for detecting the flying quality in the existing tow production industry adopts an off-line analysis method, namely sampling once every several hours, sending the sampled samples to a test room for analysis, and then guiding the production process to control the flying quality according to an analysis value. The traditional offline detection mode has the biggest defect of untimely detection, when the production abnormity occurs, the overtime flying cannot be timely detected, the tows with unqualified flying flow downwards all the time, the standard exceeding of the flying is not found until the next sampling detection, and the production technology abnormity is identified. The untimely nature of traditional detection mode leads to flying quality monitoring to have the vacuum phase, causes the finished product silk bundle to scrap because of flying quality is unqualified very big risk. And when the flying is found to exceed the standard, a tracing program needs to be started, the starting point of the flying exceeding the standard is judged, and all unqualified finished tow products with the flying are found out to be scrapped. When the flying exceeds the standard, the yield is increased, and the traced workload and the caused loss are increased.
Therefore, a method for detecting the fly on line is needed, which can obtain the fly value of the tows on the production line in real time, guide the process control of the fly quality in real time, thereby producing high-quality and homogenized tows with qualified fly quality, and reducing or eliminating waste of finished tows and manpower caused by the excessive fly.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a device and a method for detecting the flying yarn of a tow on line in real time, the method can detect the flying yarn amount of a silk ribbon on a tow production line on line in real time, and based on the method, the application can be expanded, an online flying yarn monitoring system is constructed by using flying yarn data obtained by real-time detection, the analysis and evaluation of flying yarn quality indexes are carried out, and the fundamental purposes of guiding the production process in real time to control the flying yarn quality and improving the tow quality are realized.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a silk bundle production line fly online real-time detection device, includes: a fly waste collection device; the flying flower collecting device is of a hollow structure, the left end and the right end of the flying flower collecting device are opened, and the silk ribbons continuously pass through the left end opening and the right end opening of the flying flower collecting device under the action of traction force;
a flying flower blowing device is arranged at the bottom in the flying flower collecting device;
the flying blowing device is connected with the first pressure stabilizing valve and the air filter through pipelines;
the top in the flying flower collecting device is provided with a flying flower sampling port;
the flying sample port is connected with the detection box body through a pipeline; a flying sensor is arranged in the detection box body;
the detection box body is also connected with a vacuum generator through an air rotor flow meter;
the air outlet end of the air filter is connected with the vacuum generator through a third pressure stabilizing valve;
the system also comprises a programmable logic controller and a computer;
the control end of the programmable logic controller is connected with the flying sensor;
the programmable logic controller is also connected with the computer.
Further, preferably, the air outlet end of the air filter is also connected with the air inlet end of the air rotameter through a second pressure stabilizing valve and an electromagnetic valve; the control end of the programmable logic controller is connected with the controlled end of the electromagnetic valve.
Further, it is preferable that the flying sensor is a laser sensor.
Further, it is preferable that a gimbal is mounted on the flying waste collecting device for adjusting a mounting position of the flying waste collecting device.
The on-line real-time detection method for the flying marks of the tow production line adopts the on-line real-time detection device for the flying marks of the tow production line, and comprises the following steps:
step (1), sampling: the flying waste on the surface of the silk ribbon is collected from the silk bundle production line by a flying waste collecting device and is transmitted to a flying waste sensor.
Step (2), measurement: the flying sensor detects the flying amount, and the flying amount is converted into an electric signal for the subsequent stage to acquire and process flying data;
and (3) processing data: the electric signal output by the fly sensor is converted into an engineering quantity value, the fly value is stored, displayed, counted and subjected to overrun alarm, and the tow fly index is monitored in real time.
Further, it is preferable that the specific method of step (1) is:
the method comprises the following steps that a silk ribbon on a silk bundle production line continuously passes through a hollow cavity of a fly collecting device under the action of traction force, a fly blowing device blows the surface of the silk ribbon to enable fly on the surface of the silk ribbon to fall off and suspend in the cavity of the fly collecting device, the fly in the cavity is sucked from a fly sampling port through air negative pressure, and the sucked fly is conveyed into a detection box body provided with a silk bundle fly sensor to be detected in real time;
the first pressure stabilizing valve stably provides compressed air with required pressure for the flying flower blowing device;
a vacuum generator is adopted to generate negative pressure suction force, and a third pressure stabilizing valve stably provides compressed air with required pressure for the vacuum generator;
the air rotor flow meter adjusts the negative pressure sampling air flow to be stabilized at a constant value.
Further, preferably, the electromagnetic valve switch is controlled by a programmable logic controller, clean compressed air with large flow is blown into the sampling loop, and residual flying flowers in the sampling loop are cleaned; the second pressure maintaining valve stably cleans the compressed air with the pressure required by the sampling loop.
Preferably, the sampling is continuous sampling, and the purging is timed purging, such as: samples were taken continuously for 1 hour and back-flushed for 1 minute. The purging time interval and the purging duration are freely set according to the actual use condition.
Further, it is preferable that the flying waste blowing device blows and simultaneously ensures that a slight positive pressure is formed in the cavity of the flying waste collecting device.
Further, it is preferable that the specific method of the step (2) is:
the fly sensor receives fly conveyed by the fly collecting device through the negative pressure pipeline, and the voltage number which is in direct proportion to the fly amount is measured and output to supply a computer for acquiring and processing fly data.
Further, it is preferable that the specific method of step (3) is:
the computer is connected with the programmable logic controller through the Ethernet and converts the electric signal into an engineering quantity value so as to collect the flying data in real time; the computer establishes a database to store the flying value and displays and outputs the flying value; and (4) storing, displaying, counting and alarming for overrun on a computer, and monitoring the strand fly indexes in real time.
The flying flower collecting device has a cavity structure for the silk ribbon to pass through without damage; preferably, the fly collecting device is provided with a universal support for adjusting the installation position, so that the silk ribbon is relatively suspended in the cavity, and the aim of avoiding damaging the silk ribbon and interfering normal production operation is fulfilled;
the flying measurement method is realized by adopting a dust sensor principle;
the inner cavity of the flying flower collecting device is additionally provided with an external force device for promoting the flying flowers to fall off, and the external force device is used for promoting the flying flowers on the surface of the silk ribbon to fall off as much as possible and suspend in the cavity on the premise of not damaging the silk ribbon; the external force device for promoting the flying flower to fall off preferably uses clean compressed air to sweep the surface of the tows so as to promote the flying flower to fall off from the surface of the tows;
the flying is transmitted to a flying sensor in real time by using a negative pressure pipeline; the air negative pressure preferably generates negative pressure power through a vacuum negative pressure generator;
in order to enhance the stability of the online measurement of the flying cotton, the flying cotton collecting device is provided with a device for preventing the floccule from entering a sampling pipeline to cause blockage at a negative pressure sampling port, the device is a filter screen, a grating, a sieve plate or the like, and the sieve plate is preferably used.
In order to enhance the stability of online measurement of the flying cotton, clean compressed air is introduced into the cavity of the flying cotton collecting device to form micro-positive pressure, so that ambient air carrying dust is prevented from entering the cavity and mixing into the flying cotton, and the detection accuracy of the flying cotton sensor is interfered;
in order to enhance the stability of online measurement of the flying flower and prevent the flying flower from depositing on a sampling pipeline, the invention is provided with a timing back-flushing self-cleaning mechanism in a sampling loop.
Compared with the prior art, the invention has the beneficial effects that:
the device and the method can realize real-time online detection of the flying amount of the silk ribbon on the silk bundle production line, obtain the flying data in real time and feed the flying data back to the production process to control the flying quality. The method for the on-line detection of the fly waste of the tow production line fills the blank of the on-line detection method of the fly waste in the industry, has extremely high popularization and application values, and has important significance for improving the quality of the tow in the whole industry.
Drawings
FIG. 1 is a schematic structural diagram of an online real-time detection device for fly waste in a tow production line.
The device comprises a silk ribbon 1, a flying flower collecting device 2, a flying flower blowing device 3, a flying flower sampling port 4, a first pressure stabilizing valve 5, an air filter 6, an electromagnetic valve 7, a second pressure stabilizing valve 8, an air rotor flow meter 9, an air pressure stabilizing valve 10, a flying flower sensor 11, a vacuum generator 12, a programmable logic controller 13 and a computer 14.
Detailed Description
The present invention will be described in further detail with reference to examples.
It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The materials or equipment used are not indicated by manufacturers, and all are conventional products available by purchase.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, "connected" as used herein may include wirelessly connected. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "provided" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention are understood according to specific situations.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The utility model provides a silk bundle production line fly online real-time detection device which characterized in that includes: a fly waste collecting device 2; the flying flower collecting device 2 is of a hollow structure, the left end and the right end of the flying flower collecting device are open, and the silk ribbon 1 continuously passes through the left end opening and the right end opening of the flying flower collecting device 2 under the action of traction force;
a flying flower blowing device 3 is arranged at the bottom in the flying flower collecting device 2;
the flying flower blowing device 3 is connected with the first pressure stabilizing valve 5 and the air filter 6 through pipelines;
the top in the flying flower collecting device 2 is provided with a flying flower sampling port 4;
the flying sample port 4 is connected with the detection box body through a pipeline; a flying sensor 11 is arranged in the detection box body;
the detection box body is also connected with a vacuum generator 12 through an air rotor flow meter 9;
the air outlet end of the air filter 6 is connected with a vacuum generator 12 through a third pressure stabilizing valve 10;
also includes a programmable logic controller 13 and a computer 14;
the control end of the programmable logic controller 13 is connected with the flying sensor 11;
the programmable logic controller 13 is also connected to a computer 14.
Preferably, the air outlet end of the air filter 6 is also connected with the air inlet end of an air rotameter 9 through a second pressure stabilizing valve 8 and an electromagnetic valve 7; the control end of the programmable logic controller 13 is connected with the controlled end of the electromagnetic valve 7.
Preferably, the fly sensor 11 is a laser sensor.
Preferably, the fly waste collecting device is provided with a universal bracket for adjusting the installation position of the fly waste collecting device.
A fly collecting device 2 is arranged on a ribbon 1 on a tow production line, the ribbon 1 continuously passes through a cavity of the fly collecting device 2 under the action of traction force, an external force device for promoting a great amount of fly on the surface of the tow to fall off is attached in the cavity, preferably, a method for blowing the surface of the ribbon by a clean compressed air fly blowing device 3 is adopted, the fly on the surface of the ribbon falls off and suspends in the cavity of the fly collecting device, the fly in the cavity is sucked from a fly sampling port 4 through air negative pressure, and the fly is transmitted to a tow fly sensor 11 for real-time detection. The air adjustable first pressure stabilizing valve 5 stably provides compressed air with proper pressure required by the flying blow and sweeping device 3. In the embodiment, a vacuum generator 12 is used for generating negative pressure suction force, and the air adjustable third pressure stabilizing valve 10 stably provides compressed air with required proper pressure for the vacuum generator 12. The air rotameter 9 regulates the negative pressure sampling air flow rate to stabilize at a constant value. In order to ensure the accuracy of measurement, the flying flower sampling loop is provided with a self-cleaning mechanism, in this embodiment, the programmable logic controller 13 preferably controls the electromagnetic valve 7 to open and close, a large-flow clean compressed gas path is blown into the sampling loop, and the residual flying flower in the sampling loop is cleaned. The air adjustable second pressure maintaining valve 8 stably provides compressed air with proper pressure required by the self-cleaning mechanism. In order to ensure the accuracy of measurement, the air flying flower blowing device 3 can ensure that micro-positive pressure is formed in the collecting cavity of the flying flower collecting device 2 while blowing, so that ambient air is prevented from carrying dust into the cavity to be mixed into flying flowers, and the detection accuracy of the flying flower sensor is interfered. The air filter 6 provides clean compressed air for the entire sampling circuit.
The flying sensor 11 receives flying waste conveyed by the flying waste collecting device 2 through the negative pressure pipeline, and outputs a voltage number proportional to the flying waste amount through measurement, and the voltage number is supplied to a later stage to process flying waste data. In the embodiment, the flying sensor adopts a laser sensor and obtains a flying mass concentration signal by using a laser scattering principle. In the embodiment, a programmable logic controller 13 is arranged to assist in measurement, and the programmable logic controller 13 receives an original signal of the flying sensor and converts the original signal into a standard flying value to be transmitted to a computer 14. The conversion formulas for converting the original signals of the flying sensor into the standard flying values are different among different sensors, the conversion relation between the specific engineering quantity value and the sensor signal value depends on the actually selected sensor, and a sensor manufacturer usually attaches an operation instruction and converts the operation instruction according to the content of the operation instruction.
The computer 14 is connected with the programmable logic controller 13 through the Ethernet to collect the flying data in real time. The computer establishes a database to store the flying value and displays and outputs the flying value. The method comprises the steps of collecting, storing, displaying, counting, analyzing and researching flying values on a computer, and establishing a flying quality closed-loop control system to achieve the purpose of improving the quality of tows.
The on-line real-time detection method for the fly waste of the tow production line adopts the on-line real-time detection device for the fly waste of the tow production line, and comprises the following steps:
step (1), sampling: the flying waste on the surface of the silk ribbon is collected from the silk bundle production line by a flying waste collecting device and is transmitted to a flying waste sensor.
Step (2), measurement: the flying sensor detects the flying amount, and the flying amount is converted into an electric signal for the subsequent stage to acquire and process flying data;
and (3) processing data: the electric signal output by the fly sensor is converted into an engineering quantity value, the fly value is stored, displayed, counted and subjected to overrun alarm, and the tow fly index is monitored in real time.
Preferably, the specific method of step (1) is:
the method comprises the following steps that a silk ribbon on a silk bundle production line continuously passes through a hollow cavity of a fly collecting device under the action of traction force, a fly blowing device blows the surface of the silk ribbon to enable fly on the surface of the silk ribbon to fall off and suspend in the cavity of the fly collecting device, the fly in the cavity is sucked from a fly sampling port through air negative pressure, and the sucked fly is conveyed into a detection box body provided with a silk bundle fly sensor to be detected in real time;
the first pressure stabilizing valve stably provides compressed air with required pressure for the flying flower blowing device;
a vacuum generator is adopted to generate negative pressure suction force, and a third pressure stabilizing valve stably provides compressed air with required pressure for the vacuum generator;
the air rotor flow meter adjusts the negative pressure sampling air flow to be stabilized at a constant value.
Controlling the switch of the electromagnetic valve through a programmable logic controller, blowing large-flow clean compressed air into the sampling loop, and cleaning residual flying flowers in the sampling loop; the second pressure maintaining valve stably cleans the compressed air with the pressure required by the sampling loop.
The fly waste blowing device is used for blowing and simultaneously ensuring that micro-positive pressure is formed in a cavity of the fly waste collecting device.
The specific method of the step (2) is as follows:
the fly sensor receives fly conveyed by the fly collecting device through the negative pressure pipeline, and the voltage number which is in direct proportion to the fly amount is measured and output to supply a computer for acquiring and processing fly data.
The specific method of the step (3) is as follows:
the computer is connected with the programmable logic controller through the Ethernet and converts the electric signal into an engineering quantity value so as to collect the flying data in real time; the computer establishes a database to store the flying value and displays and outputs the flying value; and (4) storing, displaying, counting and alarming for overrun on a computer, and monitoring the strand fly indexes in real time.
Application example 1
In the example, the flying of the single ribbon of the acetate fiber tow production line for the cigarette is detected on line.
1. Sampling: on a production line of cellulose acetate tow for cigarettes, a fly collecting device 2 is arranged at a position where a ribbon 1 stably advances between a drying machine and a filament placing machine (godet rollers can be arranged at the front and the rear of the fly collecting device 2 to restrain the position of advancing tow so as to obtain the ribbon stably advancing), and the ribbon 1 is positioned at the middle horizontal position in a cavity through a universal adjusting support adjusting and mounting device attached to the fly collecting device 2, so that the ribbon 1 is ensured to be free of contact with the inner wall of the cavity and friction stress damage to the ribbon 1. The silk ribbon 1 continuously and naturally passes through the cavity of the flying cotton collecting device 2 under the action of the traction force of the silk swinging machine. The stable clean compressed air with the pressure of 100kpa is provided for the fly blowing device 3 through adjusting the first pressure stabilizing valve 5, so that a large amount of fly on the surface of the filament bundle drops off and is suspended in the cavity of the fly collecting device 2, the fly in the cavity is sucked from the fly sampling port 4 through air negative pressure, and the fly is transmitted to the filament bundle fly sensor 11 for real-time detection. In this embodiment, a vacuum generator 12 is used to generate negative pressure suction force, and a third pressure maintaining valve 10 stably supplies compressed air with appropriate pressure required by the vacuum generator 12. The air rotor flow meter 9 regulates the negative pressure sampling air flow to be stabilized at 6L/min. In order to ensure the accuracy of measurement, the flying flower sampling loop is provided with a self-cleaning mechanism, in the embodiment, the programmable logic controller 13 preferably controls the electromagnetic valve 7 to be opened and closed, and a large-flow clean compressed gas circuit is blown into the sampling loop for 1 minute at intervals of 4 hours to clean the residual flying flower of the sampling loop. By adjusting the second pressure maintaining valve 8, 0.2Mpa of clean compressed air is provided for the self-cleaning mechanism. The air filter 6 provides clean compressed air for the entire sampling circuit.
2. Measurement: the flying sensor 11 receives the flying collecting device 2 and delivers the flying that comes through the negative pressure pipeline, and laser sensor is chooseed for use to the flying sensor in this example, and directly through TTL serial ports output digital signal, and programmable logic controller 13 realizes point-to-point communication with flying sensor 11, receives the flying signal of sensor output to with the flying signal change for the engineering quantity value of standard: the flying value (μ g/m3) = (data bit 3) × 256+ (data bit 4). Siemens S7-300/CPU313C-2PTP programmable logic controller was chosen for this example. Because the 313C-2PTP PLC module serial port is an RS485 interface, the TTL serial port signal can not be directly received, a TTL-to-RS 485 conversion module is additionally added in the embodiment, and the normal communication with the flying sensor is realized.
3. Data processing: the computer 14 is connected with the programmable logic controller 13 through the Ethernet, and is used for collecting the flying data in real time. The computer establishes a database to store the flying value and displays and outputs the flying value. The method comprises the steps of collecting, storing, displaying, counting, analyzing and researching flying values on a computer, establishing a flying quality closed-loop control system, and guiding workers of a production process of the acetate fiber tows for cigarettes to control flying quality in real time, so that the aim of improving the quality of the tows is fulfilled.
In the example, SQL Server 2008 is selected as the database, and Siemens industrial control system software Wincc7.0 is selected to realize data display and statistical analysis for convenience of system expansion and development.
In the actual production of the tows, the appearance and the size of the produced tows may not be the same due to the difference of the production processes of different manufacturers and the application of the tow products. The difference of the external dimension of the silk ribbon can be met by changing the external dimension of the flying waste collecting device 2 to meet the measurement requirement. Because the production scales of different manufacturers are different and the number of the filament bundles is different, the on-line real-time detection device for the fly of the single filament bundle can be expanded or multiplexed according to the number of the actual filament bundles, and the on-line real-time detection requirement for the fly of a plurality of ribbons can be met.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a silk bundle production line fly online real-time detection device which characterized in that includes: a fly waste collecting device (2); the flying flower collecting device (2) is of a hollow structure, the left end and the right end of the flying flower collecting device are open, and the silk ribbon (1) continuously passes through the left end opening and the right end opening of the flying flower collecting device (2) under the action of traction force;
a flying flower blowing device (3) is arranged at the bottom in the flying flower collecting device (2);
the flying flower blowing device (3) is connected with the first pressure stabilizing valve (5) and the air filter (6) through pipelines;
the top in the flying flower collecting device (2) is provided with a flying flower sampling port (4);
the flying sample port (4) is connected with the detection box body through a pipeline; a flying sensor (11) is arranged in the detection box body;
the detection box body is also connected with a vacuum generator (12) through an air rotameter (9);
the air outlet end of the air filter (6) is connected with a vacuum generator (12) through a third pressure stabilizing valve (10);
the system also comprises a programmable logic controller (13) and a computer (14);
the control end of the programmable logic controller (13) is connected with the flying sensor (11);
the programmable logic controller (13) is also connected with a computer (14).
2. The on-line real-time detection device for the fly waste of the tow production line according to claim 1, wherein an air outlet end of the air filter (6) is further connected with an air inlet end of an air rotameter (9) through a second pressure stabilizing valve (8) and an electromagnetic valve (7); the control end of the programmable logic controller (13) is connected with the controlled end of the electromagnetic valve (7).
3. The on-line real-time detection device for the fly waste of the tow production line according to claim 1, wherein the fly waste sensor (11) is a laser sensor.
4. The on-line real-time detection device for the fly waste in the tow production line according to claim 1, wherein a gimbal is mounted on the fly waste collection device for adjusting the mounting position of the fly waste collection device.
5. An online real-time detection method for the fly waste of a tow production line, which adopts the online real-time detection device for the fly waste of the tow production line of any one of claims 1 to 4, is characterized by comprising the following steps:
step (1), sampling: the flying waste on the surface of the silk ribbon is collected from the silk bundle production line by a flying waste collecting device and is transmitted to a flying waste sensor.
Step (2), measurement: the flying sensor detects the flying amount, and the flying amount is converted into an electric signal for the subsequent stage to acquire and process flying data;
and (3) processing data: the electric signal output by the fly sensor is converted into an engineering quantity value, the fly value is stored, displayed, counted and subjected to overrun alarm, and the tow fly index is monitored in real time.
6. The on-line real-time detection method for the fly waste of the tow production line according to claim 5, wherein the specific method in the step (1) is as follows:
the method comprises the following steps that a silk ribbon on a silk bundle production line continuously passes through a hollow cavity of a fly collecting device under the action of traction force, a fly blowing device blows the surface of the silk ribbon to enable fly on the surface of the silk ribbon to fall off and suspend in the cavity of the fly collecting device, the fly in the cavity is sucked from a fly sampling port through air negative pressure, and the sucked fly is conveyed into a detection box body provided with a silk bundle fly sensor to be detected in real time;
the first pressure stabilizing valve stably provides compressed air with required pressure for the flying flower blowing device;
a vacuum generator is adopted to generate negative pressure suction force, and a third pressure stabilizing valve stably provides compressed air with required pressure for the vacuum generator;
the air rotor flow meter adjusts the negative pressure sampling air flow to be stabilized at a constant value.
7. The on-line real-time detection method for the fly waste in the tow production line according to claim 6, wherein a programmable logic controller controls the switch of a solenoid valve, and a large flow of clean compressed air is blown into a sampling loop to clean the residual fly waste in the sampling loop; the second pressure maintaining valve stably cleans the compressed air with the pressure required by the sampling loop.
8. The on-line real-time detection method for the fly waste in the tow production line according to claim 6, wherein the fly waste blowing device is used for blowing while ensuring that a slight positive pressure is formed in a cavity of the fly waste collecting device.
9. The on-line real-time detection method for the fly waste of the tow production line according to claim 5, wherein the specific method in the step (2) is as follows:
the fly sensor receives fly conveyed by the fly collecting device through the negative pressure pipeline, and the voltage number which is in direct proportion to the fly amount is measured and output to supply a computer for acquiring and processing fly data.
10. The on-line real-time detection method for the fly waste of the tow production line according to claim 5, wherein the specific method in the step (3) is as follows:
the computer is connected with the programmable logic controller through the Ethernet and converts the electric signal into an engineering quantity value so as to collect the flying data in real time; the computer establishes a database to store the flying value and displays and outputs the flying value; and (4) storing, displaying, counting and alarming for overrun on a computer, and monitoring the strand fly indexes in real time.
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