CN113758579B - Method for detecting temperature of spinning assembly and spinning equipment - Google Patents
Method for detecting temperature of spinning assembly and spinning equipment Download PDFInfo
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- CN113758579B CN113758579B CN202111130981.8A CN202111130981A CN113758579B CN 113758579 B CN113758579 B CN 113758579B CN 202111130981 A CN202111130981 A CN 202111130981A CN 113758579 B CN113758579 B CN 113758579B
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- 238000009987 spinning Methods 0.000 title claims abstract description 146
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000001514 detection method Methods 0.000 claims abstract description 50
- 238000009826 distribution Methods 0.000 claims abstract description 28
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 12
- 238000007781 pre-processing Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 56
- 238000007664 blowing Methods 0.000 claims description 37
- 238000001931 thermography Methods 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 26
- 230000002159 abnormal effect Effects 0.000 claims description 20
- 230000008859 change Effects 0.000 claims description 13
- 238000009529 body temperature measurement Methods 0.000 claims description 7
- 230000033001 locomotion Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000000007 visual effect Effects 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 30
- 230000008569 process Effects 0.000 description 16
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- 238000007726 management method Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
- D01D13/02—Elements of machines in combination
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D4/00—Spinnerette packs; Cleaning thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention discloses a method for detecting the temperature of a spinning component of spinning equipment and the spinning equipment, and belongs to the technical field of spinning equipment. The spinning device comprises at least two spinning components, wherein the at least two spinning components form at least two areas to be detected; the thermal imager for measuring the temperature of the spinning assembly is provided with at least two measuring positions, and the at least two measuring positions are in one-to-one correspondence with the at least two areas to be detected; the method comprises the following steps: s1, respectively carrying out temperature detection on at least two areas to be detected corresponding to at least two measurement positions through a thermal imager, and respectively obtaining temperature distribution images of the at least two areas to be detected; s2, preprocessing the thermal images to obtain the concerned areas of each thermal image; s3, acquiring detection temperature of each pixel point in the concerned region as detection temperature corresponding to the spinning component. The invention adopts the thermal imager to respectively acquire the temperature field data of each spinning assembly, and has the advantages of convenient installation, cost saving and abundant detection data.
Description
Technical Field
The invention belongs to the technical field of spinning equipment, and particularly relates to a method for detecting the temperature of a spinning component and spinning equipment.
Background
Many detachable components on spinning equipment in chemical fiber industry need to detect the temperature or heat radiation temperature field, such as a spinning component, a spinneret plate and the like, which are very important key components in the spinning process in chemical fiber industry, and high-temperature spinning materials are sprayed out from the spinneret plate in the spinning component and are cooled and formed, so that fibers are formed. The temperature of the spinneret plate and the spinning assembly can directly influence the temperature of the fiber, and the fluctuation of the temperature of the spinneret plate and the spinning assembly and the uniform temperature of the spinneret plate surface can have great influence on the quality of the fiber, and are also one of reasons for causing the quality difference between different time periods and different tows of the fiber.
Because the spin pack and the like are required to be replaced periodically and frequently, if the spinneret plate and the spin pack are provided with temperature sensors, the replacement of the spin pack is difficult, the working efficiency of operators is seriously affected, and the related sensors are also easily damaged. In addition, the temperature uniformity of the spinneret plate and the spinning assembly has great influence on spinning production, the temperature difference of the spinneret plate surface can cause uneven fiber temperature, and the subsequent crystallization and drawing quality of the fiber can be greatly influenced. The traditional temperature measuring method can only measure the temperature at a certain point and cannot be used for the whole temperature distribution. Therefore, the traditional spinning equipment is blank for the part of data, and a craftsman cannot obtain direct data and can only analyze through phenomena such as filament drift and broken ends, so that the accurate grasp of the process is affected.
Chinese patent application No. CN201680005206.0 discloses a method and apparatus for quality monitoring of a plurality of meltspun fiber slivers of a tow, which aligns one or more measurement zones on the surface of the tow by an infrared detector unit, receives radiation from the fiber slivers and determines the surface temperature therefrom. The use of a thermal imaging camera can already show the visualized fiber surface of the tow and the measured temperature profile, by which locally defined inhomogeneities in the fiber extension of the tow are obtained from the surface temperature measurements. In the patent one, when a certain tow sliver is abnormal by detecting a partial area or an integral area of the tow, namely a measuring area, the temperature of the measuring area of the tow sliver is abnormal, so that a defective tow sliver is indicated; the other is to monitor each newly extruded fiber sliver by using a plurality of measuring devices, directly correspond spinning defects in the fiber sliver with related spinning nozzle units and identify pollution of the spinning nozzle units; the patent mainly detects the temperature of the fiber through the thermal imager, judges whether the fiber has defects, and further obtains whether the spinning nozzle is abnormal, and the patent can not detect the equipment state for producing the fiber, namely the temperature of the spinneret plate surface, and the reasons for the abnormal temperature of the fiber can be many, so that the problem can not be found quickly or accurately only by detecting the temperature of the fiber, and a plurality of measuring devices are needed, so that the cost is high and the detection is inconvenient.
The present invention has been made in view of this.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the defects of the prior art and providing a method for detecting the temperature of a spinning component.
Another object of the present invention is to provide a spinning apparatus.
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:
a method for detecting the temperature of a spin pack, the spinning apparatus comprising at least two spin packs, the at least two spin packs constituting at least two areas to be detected;
the thermal imager for measuring the temperature of the spinning assembly is provided with at least two measuring positions, and the at least two measuring positions are in one-to-one correspondence with the at least two areas to be detected;
the method comprises the following steps:
s1, respectively carrying out temperature detection on at least two areas to be detected corresponding to at least two measurement positions through a thermal imager, and respectively obtaining temperature distribution images of the at least two areas to be detected;
s2, respectively preprocessing the thermal images obtained in the step S1 to obtain the concerned areas of each thermal image;
s3, acquiring detection temperature of each pixel point in the concerned region as detection temperature corresponding to the spinning component.
Through the design, the temperature data of at least two areas to be detected formed by at least two spinning components are respectively obtained through one thermal imager, and the temperature field distribution of the spinning components is obtained through the thermal imager, so that a craftsman can conveniently analyze the influence of the temperature field distribution of the spinning components on fibers, and the like, and the spinning process is optimized.
Further, the spinning assembly includes a spinneret plate, the spinneret plate is disposed at a lower portion of the spinning assembly, and the region of interest in the step S2 is a region where the spinneret plate is located.
Through the design, the region where the spinneret plate is located in the thermal image is taken as the concerned region, unnecessary regions in the thermal imaging image are removed, firstly, unnecessary data are reduced, and the effective region of the image is improved; secondly, the method is favorable for collecting effective data related to spinning, and improves data accuracy.
Further, the step S3 further includes,
s31, obtaining an average temperature value of the detection temperature of each pixel point of the attention area;
s32, obtaining the difference value between the detected temperature of each pixel point and the average temperature value, judging whether the absolute value of the difference value between the detected temperature of each pixel point and the average temperature value is larger than a preset precision, if so, judging that the detected temperature of the pixel point is abnormal, eliminating the abnormal detected temperature, taking the detected temperature of the other pixel points as the detected temperature corresponding to the spinning component, and if not, taking the detected temperature of each pixel point as the detected temperature corresponding to the spinning component;
preferably, the preset accuracy is 20 ℃.
Through the design, the temperature data of each pixel point of the attention area is extracted, basic data is provided for process staff, when the detected temperature of the pixel point is abnormal, the reason is searched, the pixel point with abnormal temperature is eliminated, and the accuracy of the acquired temperature data is improved.
Further, according to the detected temperature of each pixel point in the region of interest obtained in the step S32, the detected temperature of the spinneret center line is drawn as a temperature change curve, and visual display is performed.
Through the design, the temperature change curve of the central line of the spinneret plate is obtained, the temperature distribution form of the spinneret plate can be intuitively known, the temperature distribution rule is found and is used as basic data, and convenience is brought to the analysis work of process personnel.
Further, step S1 includes:
s11, moving the thermal imager to one of the measurement positions, and detecting the temperature of a region to be detected corresponding to the measurement position;
s12, judging whether the detection time of the thermal imager reaches a set time threshold, and if so, executing the step S13;
and S13, moving the thermal imager to the next measuring position, and detecting the temperature of the region to be detected corresponding to the next measuring position.
Through the design, the temperature of at least two areas to be detected is detected through the movement of the thermal imager at least two measuring positions, so that the purpose that one thermal imager detects a plurality of spinning components in one spinning component is realized.
Further, a spinning apparatus for carrying out a method for detecting the temperature of a spin pack assembly as described above.
Through the design, the invention provides the spinning equipment capable of detecting a plurality of spinning components through one thermal imager, and the blank in the aspect of the prior art is filled.
Further, the method comprises the steps of,
the oiling device is arranged below the spinning component;
a cooling air blowing device arranged between the oiling device and the spinning component;
the control equipment is used for controlling the cooling air blowing equipment and the oiling equipment to work;
the thermal imager is used for detecting the temperature of the region to be detected;
the transmission equipment is connected with the thermal imaging instrument, rotates to drive the thermal imaging instrument to move between at least two measuring positions, detects the temperature of at least two areas to be detected, and is arranged between the cooling blowing equipment and the oiling equipment;
the transmission equipment and the thermal imaging instrument are connected with the control equipment, and the control equipment controls the movement of the transmission equipment and the temperature measurement of the thermal imaging instrument.
Through the design, the thermal imaging instrument is arranged on the transmission equipment, and the thermal imaging instrument moves between at least two measuring positions through the transmission equipment so as to detect the temperature of at least two areas to be detected, so that the cost is saved, the assembly and the disassembly are convenient, and the detection is convenient.
Further, the transmission device is arranged in an installation space formed between the lower part of the cooling air blowing device and the upper part of the oiling device.
Through the design, the transmission equipment and the thermal imaging instrument are arranged between the cooling blowing equipment and the oiling equipment, so that the temperatures of at least two areas to be detected can be conveniently collected.
Further, the cooling air blowing device is a side air blowing device, and the transmission device is arranged between a nozzle tip of the oiling device and a guide plate of the side air blowing device;
preferably, the transmission device is arranged between the oil nozzle of the oiling device and the air outlet on the guide plate of the side air blowing device.
Through above-mentioned design, easy to assemble transmission equipment, through the debugging transmission equipment and thermal imaging appearance, can detect the temperature of two at least spinning components, transmission equipment simple to operate, the testing result is accurate.
Further, the cooling air blowing device is a circular air blowing device, and the transmission device is arranged between the oil nozzle of the oiling device and the back plate of the circular air blowing device.
Through the design, the transmission equipment is installed, and the thermal imager is debugged, so that the thermal imager can detect the temperatures of the at least two areas to be detected, the installation is convenient, and the detection result is accurate.
By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects.
(1) According to the invention, the temperature distribution condition of at least two areas to be detected formed by at least two spinning components is obtained through the thermal imager, so that the temperature field distribution data of a plurality of areas to be detected and the time-varying data of a certain area to be detected can be obtained, and basic data for analyzing, judging, alarming and other works can be provided for process staff.
(2) The invention carries out preliminary processing on the collected thermal imaging data, eliminates the pixel points with abnormal temperature, improves the accuracy of the data and improves the analysis result of the process personnel.
(3) According to the invention, the distribution condition of the temperature field of the spinneret plate is detected by the thermal imager, so that the distribution data of the whole temperature field of the spinneret plate is obtained, and the analysis of the whole temperature change condition of the spinneret plate by process personnel is facilitated.
(4) The invention provides spinning equipment, wherein the thermal imaging instrument is arranged on the transmission equipment, and the transmission equipment is controlled to move and the thermal imaging instrument detects the temperature through the control equipment, so that the temperature detection of at least two areas to be detected is realized, the cost is saved, the disassembly and assembly are convenient, and the detection is convenient.
(5) The transmission device is arranged between the oiling device and the cooling blowing device, so that the device is convenient to install and good in detection effect.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
FIG. 1 is a schematic flow diagram of a method for detecting the temperature of a spin pack assembly according to the present invention;
FIG. 2 is a schematic diagram showing the temperature results of a region to be detected using the method of the present invention;
FIG. 3 is a front view of a spinning apparatus of the present invention;
FIG. 4 is a left side view of a spinning apparatus of the present invention;
fig. 5 is a schematic diagram of a spinning apparatus of the present invention for detecting the temperature of a spin pack assembly.
In the figure: 1. spinning equipment; 10. spinning part; 100. a spinning assembly; 101. a region to be detected; 11. a fiber; 12. a thermal imager; 13. a transmission device; 14. a control device; 140. a PLC control cabinet; 141. an upper computer; 15. cooling and blowing equipment; 16. oiling equipment; 17. a wire guide.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 2, the present invention provides a method for detecting the temperature of a spin pack assembly, the spin device 1 comprising at least two spin packs 100, said at least two spin packs 100 constituting at least two areas to be detected 101;
the thermal imager 12 for measuring the temperature of the spin pack assembly 100 has at least two measuring positions, which correspond one-to-one to the at least two areas 101 to be detected;
the method comprises the following steps:
s1, respectively carrying out temperature detection on at least two areas to be detected 101 corresponding to at least two measurement positions through a thermal imager 12, and respectively obtaining temperature distribution images of the at least two areas to be detected 101;
s2, respectively preprocessing the thermal images obtained in the step S1 to obtain the concerned areas of each thermal image;
and S3, acquiring the detection temperature of each pixel point in the attention area as the detection temperature corresponding to the spinning assembly 100.
The invention is mainly aimed at a method for measuring the temperature of a heat radiation field of a detachable component, such as a spinning component and the like, on spinning equipment in the chemical fiber industry, wherein the spinning equipment can be various spinning machines used for spinning in the chemical fiber industry. The temperature change of the spinning component and various frequently detached similar components in the spinning process is detected and recorded, so that the overall temperature field distribution of the frequently detached components is obtained, the influence of the temperature field distribution balance on the melt is analyzed, the improvement of the process by process staff is facilitated, and the relevant data can be processed and analyzed by scientific researchers conveniently to obtain corresponding analysis results; the method can circularly detect the temperature of at least two areas to be detected 101, so that the method not only can obtain the temperature field distribution condition of at least two areas to be detected 101, but also can obtain the temperature change condition of at least two areas to be detected 101 along with time, and can carry out visual display, thereby facilitating the observation of whether the temperature field distribution of the spinning assembly 100 is uniform or not by a craftsman, and further can evaluate the non-uniformity degree of the fiber 11.
In fact, some removable components of the spinning apparatus, such as the spin pack 100 and spinneret temperature, are an important set of parameters in the spinning process conditions. In the spinning process, the spinning temperature is adjusted according to the viscosity of the slice, the linear density of the spinning and the characteristics of the device. Generally, relatively low spinning temperatures are used in spinning low linear density filaments; in spinning high linear density filaments, relatively high temperatures are used. For high viscosity slices, a higher temperature is used; for low viscosity slices, lower temperatures are used. Therefore, the stability and uniformity of the temperature of the spinning assembly and the spinneret plate are critical to the spinnability of the melt and the quality of the product. However, the components are required to be frequently disassembled and cleaned, so that a method of installing sensors on a spinning component shell and a spinneret plate surface and leading out signals by utilizing a fixed circuit is adopted, and a plurality of difficulties exist in temperature measurement of the components, namely, spinneret plate holes are fully distributed on the surface of the spinneret plate, the installation position of a temperature measuring sensor is difficult to select, and the operation of cleaning the spinneret plate is influenced if the temperature measuring sensor is installed; secondly, the spinning pack 100 is placed inside the spinning part 10, the periphery is closed and is in a high-temperature environment (about 300 ℃), and it is difficult to install a temperature sensor and an external lead wire; an infrared thermometer is adopted to detect the temperature of the panel, only the average temperature in the detected range can be detected, and the distribution condition of the temperature cannot be detected; furthermore, in addition to temperature fluctuations, the skilled artisan is concerned with whether the temperature field across the spinneret and spin pack assembly 100 is uniform, which is not accomplished by conventional temperature sensors such as platinum resistors, thermocouples, infrared thermometers. Even if the temperature detection is performed by adopting the thermal imager 12 technology in the prior art, the thermal imager 12 has high cost, a plurality of spinning assemblies 100 are generally arranged in one spinning position 10, the plurality of thermal imagers 12 are installed to perform the temperature detection on the plurality of spinning assemblies 100, the detection cost is high, the installation position of the thermal imager 12 is also examined, and the spinning position 10 can be a spinning box or a spinning assembly seat.
The temperature of the spinning component 100 is measured by the non-contact mode of the thermal imager 12, so that the surface and the shell of the spinning component 100 which needs to be frequently disassembled, replaced and cleaned are not required to be provided with temperature measuring sensors, an external lead is not required, and the detection difficulty is reduced; moreover, the invention employs a thermal imager 12 to complete the detection of the overall temperature field distribution of the plurality of spin packs 100 within a spin pack assembly 10, thereby reducing costs.
The spinning assembly 100 includes a spinneret plate, the spinneret plate is disposed at a lower portion of the spinning assembly 100, and the region of interest in the step S2 is a region where the spinneret plate is located.
The invention carries out the omnibearing measurement of the integral heat radiation temperature field on the spinneret plate on the spinning component 100, so that a craftsman can not only know the temperature value of a certain point on the spinneret plate, but also know the fluctuation condition of the temperature of the point along with time. According to the invention, the temperature field of the spinneret plate is taken as an effective area by extracting the concerned area, so that the influence of unnecessary areas is reduced, and more accurate temperature field data is obtained.
The invention extracts the detected spinneret plate area from the image shot by the thermal imager 12 as the concerned area, as shown in fig. 2, the distribution condition of the temperature field is visually displayed, and the area with higher temperature and lighter color is the concerned area; the temperature of the spinning component 100 is higher, the environment where the melt is located is directly reacted, the spinneret plate provided by the invention is arranged below the spinning component 100, the spinneret plate is used as an initial fiber 11 filament outlet component, the temperature of the spinneret plate can effectively react to influence the temperature field distribution of the environment where the melt is located, and the relation between the quality of the initial fiber 11 and the temperature of the spinning component 100 is reacted. Since the spin pack 100 is disposed at the upper portion of the spinneret, the heat gradually heats the spin pack 100 from the outside to the inside by heat transfer, so that it is clear from the image taken by the thermal imager 12 that the temperature gradually decreases from the outside to the inside, the spinneret periphery is provided with the spinneret orifices, the spinneret center region is not provided with the spinneret orifices, and the temperature is high. After the region of interest is extracted, the interference of other irrelevant components is eliminated, the data volume is reduced, the data accuracy is improved, relevant process personnel and technicians can conveniently read the data, and the accuracy of subsequent analysis, event judgment, alarm prompt and other works is improved.
According to the invention, the distribution condition of the temperature field of the surface of the spinneret plate close to the bottom surface is obtained by measuring the heat radiation temperature field of the parts frequently detached in the spinning assembly 100 and other similar parts in the chemical fiber industry, so that a craftsman can know the temperature and the temperature equilibrium of the spinning assembly 100 such as the spinneret plate during spinning in time, and further obtain the environmental temperature field of the melt, thereby better controlling the process. The detected temperature field data of the spinning component 100 at each moment is stored, so that the subsequent study and check by technicians can be performed, and the operations of analysis, judgment, alarm prompt and the like can be performed.
Further, the step S3 further includes,
s31, obtaining an average temperature value of the detection temperature of each pixel point of the attention area;
s32, obtaining the difference value between the detected temperature of each pixel point and the average temperature value, judging whether the absolute value of the difference value between the detected temperature of each pixel point and the average temperature value is larger than a preset precision, if so, judging that the detected temperature of the pixel point is abnormal, eliminating the abnormal detected temperature, taking the detected temperature of the other pixel points as the detected temperature corresponding to the spinning component, and if not, taking the detected temperature of each pixel point as the detected temperature corresponding to the spinning component;
the preset precision is obtained after the craftsman corrects according to the product requirement and the production state. Preferably, the preset accuracy is 20 ℃.
According to the method, the abnormal pixel points are further judged, after the related reasons are found, related processing is carried out, and the abnormal pixel points are not more generally and can be directly removed; if the abnormal pixel points are found to be caused by impurities on the lens of the thermal imager 12 through inspection, the shot thermal image can be re-detected or the abnormal pixel points can be directly removed by wiping the lens of the thermal imager 12; if the abnormal pixel points are acquisition errors and the like, the abnormal pixel points can be directly deleted, the concerned area is further optimized, the data volume is reduced, the data accuracy is improved, the process personnel can use the abnormal pixel points directly, and a more accurate analysis result is obtained.
Further, as shown in fig. 2, according to the detected temperature of each pixel point in the region of interest obtained in the step S32, the detected temperature of the spinneret center line is drawn as a temperature change curve, and is visually displayed.
Through the design, the temperature distribution range and the rule of the spinning assembly 100 are conveniently and intuitively known, and the operations of checking, subsequent analysis, event judgment, alarm prompt and the like of process personnel are facilitated; the maximum value and minimum value distribution area can be clearly checked from the temperature change curve, and the change condition of the temperature along the diameter of the spinneret plate is intuitively expressed.
Further, step S1 includes:
s11, moving the thermal imager 12 to one of the measurement positions, and detecting the temperature of the region 101 to be detected corresponding to the measurement position;
s12, judging whether the detection time of the thermal imager reaches a set time threshold, and if so, executing the step S13;
and S13, the thermal imager 12 is moved to the next measuring position, and the temperature of the region 101 to be detected corresponding to the next measuring position is detected. The invention needs to preset a detection time threshold value, and the time threshold value is arranged in the control equipment.
The present invention may also determine whether a detection completion signal of the thermal imager 12 has been received, and if so, move the thermal imager 12 to the next measurement position, otherwise, the thermal imager 12 does not move. The present invention may move the thermal imager 12 to the next measurement location by satisfying the detection time reaching a set time threshold and/or receiving a detection completion signal from the thermal imager 12. If the detection of the at least two areas to be detected 101 is completed, the temperature detection can be performed on the at least two areas to be detected 101 in a cyclic and reciprocating manner, so that the temperatures of the areas to be detected 101 at different moments can be obtained; the cyclic detection mode may be selected according to actual conditions, and may be the reciprocating motion of the S-shaped thermal imager 12, or the temperature detection may be performed by returning to the initial position after the detection of at least two areas to be detected 101 is completed once.
The present invention makes it possible to cyclically detect the temperature of at least two regions 101 to be detected by one thermal imager 12 by utilizing the characteristic that the temperature change of the spin pack assembly 100 in the spinning device is slow. Therefore, a large amount of cost is saved, the detection cost of a user is reduced, and the temperature field distribution condition of the spinneret plate can be well detected. The invention can measure the heat radiation temperature field of the spinning component 100 and other similar components, which are detachable, difficult to connect and install the contact sensor, and transmit the obtained temperature data to related equipment, and related technicians can analyze, judge, alarm, prompt and other works on the temperature data.
The invention utilizes the thermal imager 12 to perform an omnidirectional measurement of the whole thermal radiation temperature field of the component to be detected. The disassembly and assembly of the spinning assembly 100 by operators are not affected, the data of the overall temperature field distribution, the time-varying condition of the temperature field and the temperature equilibrium of the part to be detected can be obtained, and key data are provided for the technicians.
The present invention also provides a spinning apparatus for carrying out a method for detecting the temperature of a spin pack assembly 100 as described above, as shown in fig. 3-5, comprising,
an oiling device 16, wherein the oiling device 16 is arranged below the spinning assembly 100;
a cooling blower 15, the cooling blower 15 being disposed between the oiling device 16 and the spin pack 100;
the control device 14, the oiling device 16 and the cooling air blowing device 15 are respectively connected with the control device 14, and the control device 14 controls the cooling air blowing device 15 and the oiling device 16 to work;
a thermal imager 12 for detecting a temperature of the region 101 to be detected;
the transmission device 13 is connected with the thermal imaging instrument 12, the transmission device 13 rotates to drive the thermal imaging instrument 12 to move between at least two measuring positions, temperature detection is carried out on at least two areas to be detected 101, and the transmission device is arranged between the cooling air blowing device and the oiling device;
the transmission device 13 and the thermal imager 12 are connected with the control device 14, and the control device 14 controls the movement of the transmission device 13 and the temperature measurement of the thermal imager 12.
Specifically, as shown in fig. 3 and 4, a wire guide 17 is arranged below the oiling device. The infrared thermal imaging technology adopted by the invention can intuitively display the temperature of the surface of the object; the infrared thermal imager can measure the temperature of each point on the surface of the object, intuitively display the temperature field on the surface of the object and display the temperature field in an image form. The detection result of the to-be-detected area 101 obtained through the thermal infrared imager is recorded and stored, and as shown in fig. 5, the detection result of the detected to-be-detected area 101 can be displayed through the display device, so that the user can conveniently check the detection result.
The device is used for detecting the temperature field of a certain spinning component 100 in an omnibearing way, the thermal imager 12 transmits collected temperature field data to the control equipment 14 and/or further transmits the collected temperature field data to the upper computer 141, and analysis results are displayed or a temperature field data change trend curve is displayed through visualization software (or a wincc7.3 configuration management system, configuration software, an MES system and other management systems) and analysis software in the upper computer 141.
The thermal infrared imager 12 adopted by the invention, namely the thermal infrared imager, detects the infrared thermal radiation energy of a target object, so that halation or closing can not occur when the micro-light is in a strong light environment like an enhancer, and the thermal infrared imager is not influenced by strong light. Compared with the traditional temperature measurement mode (such as placing a thermocouple, wax sheets with different melting points and the like on the surface or in a measured object), the thermal imager can detect the temperature of a heating point in real time, quantitatively and on line within a certain distance, can draw a temperature gradient thermal image of equipment in operation through scanning, has high sensitivity, is not interfered by an electromagnetic field, and is convenient for field use. It can detect thermal faults of electrical equipment, such as wire joints or clamps heating, and localized hot spots in electrical equipment, etc., in a wide range of-20 deg.c to 2000 deg.c with a high resolution of 0.05 deg.c, and the thermal imager 12 is connected to a 24V power supply.
The control device 14 may be a PLC control cabinet 140, an industrial personal computer, an embedded control unit, an automatic control instrument and/or an upper computer 141, etc., the oiling device 16, the cooling blower device 15, the transmission device 13 and the thermal imager 12 are connected with the PLC control cabinet 140, the PLC control cabinet 140 controls the operations of the oiling device 16 and the cooling blower device 15, and simultaneously controls the movement of the transmission device 13 and the temperature measurement of the thermal imager 12; when the thermal imaging system comprises the upper computer 141, the thermal imaging system 12 can be connected with the PLC control cabinet 140 and the upper computer 141, or the thermal imaging system 12 is connected with the PLC control cabinet 140, the PLC control cabinet 140 is connected with the upper computer 141, the data acquired by the thermal imaging system 12 are transmitted to the upper computer 141 through the PLC control cabinet 140, and the upper computer 141 stores and manages the temperature field data acquired by the thermal imaging system 12; specifically, the thermal infrared imager may be electrically connected to the upper computer 141, where the upper computer 141 may have a display device, and is configured to display a detection result obtained by the thermal infrared imager; the control device 14 may further include a data storage device, where the data storage device is connected to the upper computer 141; the temperature image, the temperature data and the like acquired by the thermal infrared imager can be stored in a memory in the thermal infrared imager, and the acquired temperature image, the acquired temperature data and the like can be transmitted to the data storage device, and after all, the storage space of the data storage device is larger. The invention completes the analysis and other processes of the detection result through the upper computer 141 and displays the detection result through the display device.
The upper computer 141 may be provided with a visualization software (or a wincc7.3 configuration management system) and an analysis software, and the data storage device is used in cooperation with the analysis software; the visualization software comprises various configuration software for visualization, such as Siemens wincc, force control configuration software, configuration king configuration software, various MES systems and the like. Spinneret temperature field data acquired by the thermal imager 12 are stored in the data storage device for calling by analysis software and visualization software; the visualization software displays the analysis structure of the analysis software through a display device or displays the temperature change trend curve. In the invention, the thermal imager 12 and the transmission equipment 13 are respectively connected with the PLC control cabinet 140, the PLC control cabinet 140 is connected with the upper computer 141, or the thermal imager 12 and the transmission equipment 13 are respectively connected with the upper computer 141 by adopting an RS485 communication interface, an Ethernet communication interface, a modbus, PROFIBUS communication protocol, a modbus-tcp communication protocol, a profinet communication protocol and the like, and a method for exporting a data form by utilizing an interface program is used for establishing a link; the upper computer 141 performs visual display and analysis, checking, event judgment, alarm prompt and other works on the temperature field data of the spinneret plate acquired by the thermal imager 12 according to the requirements of process personnel, or displays a data change trend curve.
According to the invention, the temperature of the spinning component 100 is measured by using a thermal imager non-contact method, and the temperature measuring sensors are not required to be arranged on the surface and in the shell of the spinning component 100 which needs to be frequently disassembled, replaced and cleaned, so that the detection difficulty is reduced.
The invention carries out omnibearing measurement on the whole heat radiation temperature field of the spinning component 100 and carries out visual display on the distribution condition of the temperature field, so that a craftsman can not only know the temperature value of a certain point of the spinning component 100, but also obtain the fluctuation condition of the temperature of the point of a spinneret plate along with time, and can also observe whether the distribution of the temperature field of the spinning component 100 is uniform or not, thereby evaluating the non-uniformity degree of the fiber 11.
Specifically, as shown in fig. 5, the control device 14 controls the transmission device 13 to move so as to drive the thermal imager 12 on the transmission device 13 to move to a measurement position, and the control device 14 controls the thermal imager 12 to detect the temperature of the region 101 to be detected corresponding to the measurement position; the control device 14 judges whether the thermal imaging instrument 12 reaches the set detection time, if so, controls the transmission device 13 to move the thermal imaging instrument 12 to the next measurement position, otherwise, does not move the thermal imaging instrument 12.
The invention can automatically detect the temperature of the region 101 to be detected when the random device starts to operate or is started to operate, and acquire the temperature detection data of the region 10120 to be detected.
Specifically, as shown in fig. 3, the transmission device 13 is disposed in an installation space formed between a lower portion of the cooling blower device 15 and an upper portion of the oiling device 16.
In general, the spinning assembly 100 is disposed in the spinning component 10, i.e., the spinning assembly seat or the spinning manifold, the oiling device 16 is disposed under the spinning assembly 100, particularly the spinneret plate, and the cooling air blowing device 15 is disposed at one side under the spinning component 10, at this time, an installation space is formed between the oiling device 16 and the cooling air blowing device 15, and the transmission device 13 can be installed in the installation space, so that the thermal imager 12 on the transmission device 13 and the transmission device 13 can be adjusted, so that the thermal imager 12 can detect a plurality of spinning assemblies 100 in the spinning component 10; it is a desirable installation location if the transmission device 13 can be positioned below the spin pack assembly 100. The installation space is about 1 x 0.1m space. The installation space is dimensioned to be fully capable of installing the associated transmission device 13.
Further, the transmission device 13 is any one of a screw transmission mechanism, a slide rail transmission mechanism, a synchronous belt transmission mechanism or a gear transmission mechanism.
Considering the working condition that the environment temperature of the actual operation on site is high, the transmission equipment 13, the thermal imager 12 and the like related to the invention are made of high-temperature resistant materials.
Further, the cooling air blowing device 15 is a side air blowing device, and the transmission device 13 is arranged between a nozzle tip of the oiling device 16 and a deflector of the side air blowing device; the guide plate is a rectifying plate.
Preferably, the transmission device 13 is arranged between a nozzle tip of the oiling device 16 and an air outlet on a guide plate of the side air blowing device.
Alternatively, the cooling blower 15 is a circular blower, and the transmission device 13 is disposed between a nozzle tip of the oiling device 16 and a back plate of the circular blower.
The side blowing device is arranged below the spinning part 10 and above the oiling device 16, the side blowing device is also arranged on one side of the spinning part 10, an air outlet is arranged on the side, facing the fiber 11, of the side blowing device, and a rectifying plate or a guide plate is arranged at the air outlet, so that a transmission device 13 is just arranged between the guide plate at the air outlet and a nozzle of the oiling device 16, the nozzle is generally supported by a nozzle bracket, and the transmission device 13 can be arranged on the nozzle bracket; the annular blowing device is various in form, and in general, the side of the annular blowing device facing the fiber 11 is provided with a back plate or a shell and the like, and likewise, the transmission device 13 is arranged between the back plate or the shell and a nozzle tip of the oiling device 16, the nozzle tip is supported by a nozzle tip support, and the transmission device 13 can be placed on the nozzle tip support.
The process personnel of the invention can know the temperature field parameters of related parts by measuring the heat radiation temperature field data of the detachable parts on the spinning equipment, such as parts frequently detached from the spinning assembly, the spinneret plate and other similar parts, thereby optimizing the spinning process. The process staff can check the key components in the spinning components such as the spinneret plate at that time to judge whether the key components are the key components in the spinning components such as the spinneret plate and the like when the phenomena such as broken filaments, floating filaments and the like occur in production or the problems such as broken filaments and the like occur in the products by correlating the temperature data with the inspection data information of the products with the production conditions. Thus, the defect inspection of the spinning assembly and the spinneret plate can be performed in time.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.
Claims (8)
1. A method for detecting the temperature of a spin pack assembly, characterized by: the spinning device comprises at least two spinning components, wherein the at least two spinning components form at least two areas to be detected;
the thermal imager for measuring the temperature of the spinning assembly is provided with at least two measuring positions, and the at least two measuring positions are in one-to-one correspondence with the at least two areas to be detected;
the spinning apparatus further comprises:
the thermal imager is used for detecting the temperature of the region to be detected;
the transmission equipment is connected with the thermal imaging instrument, rotates to drive the thermal imaging instrument to move between at least two measuring positions, detects the temperature of at least two areas to be detected, and is arranged below the spinning component;
the transmission device is arranged in an installation space formed between the lower part of the cooling blowing device and the upper part of the oiling device;
the cooling and blowing equipment is side blowing equipment, and the transmission equipment is arranged between a nozzle of the oiling equipment and a guide plate of the side blowing equipment;
the transmission equipment and the oil nozzle are arranged on the oil nozzle bracket;
the method comprises the following steps:
s1, respectively carrying out temperature detection on at least two areas to be detected corresponding to at least two measurement positions through a thermal imager, and respectively obtaining temperature distribution images of the at least two areas to be detected;
s2, respectively preprocessing the thermal images obtained in the step S1 to obtain the concerned areas of each thermal image;
s3, acquiring detection temperatures of all pixel points in the concerned region as detection temperatures corresponding to the spinning components;
the spinning assembly comprises a spinneret plate, the spinneret plate is arranged at the lower part of the spinning assembly, and the region of interest in the step S2 is the region where the spinneret plate is located.
2. A method for detecting the temperature of a spin pack assembly according to claim 1, wherein: the step S3 also includes the step of,
s31, obtaining an average temperature value of the detection temperature of each pixel point of the attention area;
s32, obtaining the difference value between the detected temperature of each pixel point and the average temperature value, judging whether the absolute value of the difference value between the detected temperature of each pixel point and the average temperature value is larger than the preset precision, if so, judging that the detected temperature of the pixel point is abnormal, eliminating the abnormal detected temperature, taking the detected temperature of the other pixel points as the detected temperature corresponding to the spinning component, and if not, taking the detected temperature of each pixel point as the detected temperature corresponding to the spinning component.
3. A method for detecting the temperature of a spin pack assembly according to claim 2, wherein: the preset accuracy is 20 ℃.
4. A method for detecting the temperature of a spin pack assembly according to claim 3, wherein: and drawing the detected temperature of the central line of the spinneret plate into a temperature change curve according to the detected temperature of each pixel point in the concerned region obtained in the step S32, and carrying out visual display.
5. A method for detecting the temperature of a spin pack assembly according to any one of claims 1 to 4, wherein: the step S1 comprises the following steps:
s11, moving the thermal imager to one of the measurement positions, and detecting the temperature of a region to be detected corresponding to the measurement position;
s12, judging whether the detection time of the thermal imager reaches a set time threshold, and if so, executing the step S13;
and S13, moving the thermal imager to the next measuring position, and detecting the temperature of the region to be detected corresponding to the next measuring position.
6. A spinning apparatus, characterized in that: method for carrying out a method for detecting the temperature of a spin pack assembly according to any of the preceding claims 1 to 5.
7. A spinning apparatus according to claim 6, comprising,
the oiling device is arranged below the spinning component;
a cooling air blowing device arranged between the oiling device and the spinning component;
the control equipment is used for controlling the cooling air blowing equipment and the oiling equipment to work;
the method is characterized in that: also included is a method of manufacturing a semiconductor device,
the thermal imager is used for detecting the temperature of the region to be detected;
the transmission equipment and the thermal imaging instrument are connected with the control equipment, and the control equipment controls the movement of the transmission equipment and the temperature measurement of the thermal imaging instrument.
8. A spinning apparatus according to claim 7, wherein: the cooling air blowing equipment is annular air blowing equipment, and the transmission equipment is arranged between a nozzle tip of the oiling equipment and a backboard of the annular air blowing equipment.
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