CN111519296A - On-line detection device and method for distribution of speed change points in drafting zone - Google Patents
On-line detection device and method for distribution of speed change points in drafting zone Download PDFInfo
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- CN111519296A CN111519296A CN202010290426.0A CN202010290426A CN111519296A CN 111519296 A CN111519296 A CN 111519296A CN 202010290426 A CN202010290426 A CN 202010290426A CN 111519296 A CN111519296 A CN 111519296A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/32—Counting, measuring, recording or registering devices
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/32—Regulating or varying draft
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- Spinning Or Twisting Of Yarns (AREA)
Abstract
The invention relates to an online detection device for distribution of speed change points in a drafting zone, which comprises an illumination device and a projection device, wherein the illumination device and the projection device are respectively arranged above and below a fiber strip in the drafting zone; the invention also relates to an on-line detection method for distribution of the variable speed points in the drafting zone, which comprises the steps of obtaining the coordinates of the upper side and the lower side of the projection on the fluorescent screen according to a rectangular coordinate system and a unit grid on the fluorescent screen, transmitting the obtained coordinate information to a client, obtaining an upper curve equation of the upper side and a lower curve equation of the lower side of a fiber strip through the client, equally dividing the upper curve and the lower curve into a certain number of parts along the horizontal coordinate, calculating the area between the upper curve and the lower curve in each part through discrete cutting, and finally calculating the area difference between the two adjacent parts to obtain the distribution curve of the variable speed points in the drafting zone.
Description
Technical Field
The invention belongs to the technical field of new textile technologies, and particularly relates to an online detection device and method for distribution of speed change points in a drafting zone.
Background
At present, in the spinning process, a fiber bundle or a fiber roll with certain uniformity is prepared by opening and impurity removal of larger fiber blocks which are disordered and contain more impurities, then the fiber bundle or the fiber roll is finely and deeply opened and impurity removal to prepare an initial fiber strip, the fiber straightening state in the fiber strip is poor, the fiber of the fiber strip mostly contains hooks at the front part or the rear part or both the front end and the rear end, then the fiber strip is combed and drawn or directly drawn, the fiber strip is further stretched and thinned through the drafting process, the fiber straightening degree in the fiber strip is improved through the mutual sliding between the fibers in the stretching process, thus the drawn strip with further improved quality is obtained, then the prepared drawn strip is drawn, thinned and twisted and wound by a roving machine to prepare a roving with certain strength, the roving is drawn, thinned, twisted and wound by a spinning machine to obtain the spun yarn with certain strength. Therefore, drafting is one of the most important links in the fiber spinning process, and the quality of drafting can be directly determined to be yarn quality. In the drafting process of spinning, fibers in a fiber strip or a fiber bundle slide mutually by changing slow motion into fast motion, and the point of the fiber changing from the slow motion into the fast motion is the speed change point of the fiber, so the distribution of the speed change points of the fiber plays the most important role in the drafting quality, and the real-time detection of the distribution of the speed change points of the fiber in a drafting area is particularly important.
Disclosure of Invention
Aiming at the problems, the invention provides an online detection device and method for the distribution of the speed change points in the drafting zone, which realize the real-time online detection of the distribution of the speed change points of the fibers in the drafting zone by additionally arranging an illumination device above two rows of rollers in the drafting zone and additionally arranging a fluorescent curtain with unit grids below the rollers.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an online detection device that variable speed point distributes in draft district, includes illumination device and projection arrangement, the illumination device with projection arrangement installs respectively in the top and the below of the ribbon in draft district, the illumination device projection arrangement and the ribbon in draft district are coaxial, the illumination device with the complete presentation of projection of the ribbon in the draft district on the projection arrangement.
Preferably, the illumination device comprises a light emitting tube, a first fixing device and an adjusting device, the light emitting tube is fixedly installed at the position above the fiber strips in the drafting zone through the first fixing device, and the adjusting device adjusts the brightness of the light emitting tube.
Preferably, the projection device comprises a fluorescent screen and a second fixing device, the fluorescent screen is provided with a rectangular coordinate system, and a plurality of unit grids formed by unit grids with the same size are divided on the fluorescent screen provided with the rectangular coordinate system; the fluorescent curtain is fixedly arranged at the lower position of the fiber strips in the drafting zone through the second fixing device.
Preferably, the length and width of the unit cells on the fluorescent screen are set within 0.1 mm.
Preferably, the light-emitting tube is movable, and the light can be always kept to completely irradiate all the fiber strips in the drafting zone; the fluorescent curtain always keeps the projection of all the fiber strips in the drafting zone to be positioned completely above the fluorescent curtain, and the position of the fluorescent curtain is kept unchanged in the same testing process.
The invention also provides an online detection method for the distribution of the speed change points in the drafting zone, which comprises the following steps:
step one, installation: the light-emitting tube is fixedly arranged above the fiber strips in the drafting zone through the first fixing device, and the fluorescent curtain is fixedly arranged below the fiber strips in the drafting zone through the second fixing device;
step two, obtaining a mass distribution change area of the fiber strips in the drafting area: the luminotron completely presents the projection of the fiber strips in the drafting zone on the fluorescent screen, at the moment, on the fluorescent screen, the abscissa on the fluorescent screen is taken as the bottom edge, the edge line of the fiber strip at one side, which is positioned above the formed projection along the length direction of the fiber strip, is the upper side, the edge line of the fiber strip at one side, which is positioned below the formed projection is the lower side, the coordinates of the upper side point and the lower side point of the fiber strip at each unit grid point are obtained through the unit grids divided on the fluorescent screen, then the obtained coordinate information of the upper side point and the lower side point of each fiber strip is transmitted to a client, the client has certain independent computing capability, the client directly draws the upper side curve and the lower side curve of the fiber strip in the drafting zone according to the obtained coordinate information of the upper side point and the lower side point, and the area positioned between the upper side curve and the lower side curve is the mass distribution change zone of the fiber strip in the drafting zone;
step three, acquiring a mass distribution curve of the fiber strip in the drafting zone: equally dividing the upper side curve and the lower side curve into a plurality of parts along the abscissa on the fluorescent screen, wherein each part contains the same number of unit grids, calculating the area of the area between the upper side curve and the lower side curve in each part according to the mass distribution change area of the fiber strip in the drafting area obtained in the step two, discretely dividing the part between two adjacent grid units in each area into a small area, approximating the part into a rectangular area, taking the width of each grid unit as the width of the approximated rectangular area, taking the difference between the ordinate of the corresponding upper side curve at any grid unit and the ordinate of the corresponding upper side curve as the length of the approximated rectangular area, and sequentially and directly calculating the area of each approximated rectangular area, and then adding the areas of all the approximated rectangular areas in each area to obtain the area of each area, then, the obtained area value of each area is taken as a vertical coordinate, and the horizontal coordinate corresponding to each area value is selected at any equal interval, so that a mass distribution curve of the fiber strips in the drafting zone is drawn on a rectangular coordinate system;
step four, acquiring a distribution curve of speed change points of the fiber strips in the drafting zone: and D, subtracting the area value with the larger abscissa from the area value with the smaller abscissa in two adjacent area values in sequence according to the area value of each equal division region between the upper side curve and the lower side curve of the sliver obtained in the step three, thereby obtaining one less area value difference value than the equal division region in sequence, taking each obtained area value difference value as the ordinate, and selecting the abscissa corresponding to each area value difference value at any equal interval, thereby drawing the distribution curve of the speed change points of the sliver in the drafting region on a rectangular coordinate system.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the invention adds an illumination device above a front row and a back row of rollers in a drafting zone, adds a fluorescent curtain below the two rows of rollers, arranges a rectangular coordinate system on the fluorescent curtain, distributes unit grids in the rectangular coordinate system, illuminates fiber strips in the drafting zone by light emitted by the illumination device above when in use, thereby presents the projection of the fiber strips on the fluorescent curtain, then obtains the coordinates of the upper and the lower sides of the projection of the fiber strips along the length direction of the fiber strips according to the rectangular coordinate system on the fluorescent curtain and the unit grids, thereby transmits each coordinate obtained by an interface of the fluorescent curtain to a client, obtains an upper curve equation of the upper side and a lower curve equation of the lower side of the fiber strips by the client, equally divides the upper curve and the lower curve into a plurality of parts along the horizontal coordinate, calculates the area between the upper curve and the lower curve in each part by discrete cutting, and finally, calculating the area difference between two adjacent parts to obtain a distribution curve of the speed change points in the drafting zone.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of the overall structure of the present invention.
In the figure: 1. a front rubber roller is coated; 2. a front bottom roller; 3. then a sizing roller is arranged; 4. a rear bottom roller; 5. a light emitting tube; 6. a fluorescent screen.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in figure 1, the invention relates to a drafting device, which comprises a front roller drafting pair and a rear roller drafting pair, wherein the front roller drafting pair comprises a front lower roller 2 and a front upper rubber roller 1, the rear roller drafting pair comprises a rear lower roller 4 and a rear upper rubber roller 3, the front lower roller 2 and the rear lower roller 4 are both of steel structures, and are provided with strip-shaped grooves at equal intervals on the surfaces of the rollers, the front upper rubber roller 1 is consistent with the rear upper rubber roller 3 in structure, the front upper rubber roller 1 comprises a rubber roller shaft, a rubber roller sleeve is connected on the rubber roller shaft through a bearing, the rubber roller sleeve is made of rubber and can freely rotate around the rubber roller shaft, the front upper rubber roller 1 and the rear upper rubber roller 3 are arranged on a pressurizing assembly, and when in use, the front upper rubber roller 1 is in contact with the front lower roller 2 under a certain pressure through the pressing of the pressurizing assembly, thus forming a front pressing jaw between the two, and the contact between the rear upper glue roller 3 and the rear lower roller 4 under a certain pressure, thus forming a rear pressing jaw between the two, the area between the front pressing jaw and the rear pressing jaw being a drafting zone.
The drafting device specifically operates as follows, the motor drives roller 2 under preceding, roller 4 initiatively rotates under the back, then drive respectively with it contact preceding rubberizing roller 1, back rubberizing roller 3 carries out passive with fast, reverse rotation, just the rotational speed of roller 2 is greater than roller 4's rotational speed under the back, thereby form the difference in speed between the two, realize then that the draft to the ribbon between the two is attenuated the effect, in the drafting process, the rear end of ribbon by press the nip after press and press, the front end by press the nip before press and press, thereby make the ribbon when by press the frictional force field that the nip formed after or press the frictional force field that the nip formed after and during the internal friction force field integrated control between the fibre in the ribbon, fibre in the ribbon with the speed that roller 4 linear velocity is the same under the back is in the draft district slow motion, when the fiber strip moves to be controlled by the friction force field formed by the front pressing jaw, the fibers in the fiber strip overcome the acting force of the friction force field formed by the rear pressing jaw or the friction force field formed by the rear pressing jaw and the internal friction force field between the fibers in the fiber strip, so that the fibers in the fiber strip move rapidly in the drafting zone at the same speed as the linear speed of the front lower roller 2, in the process of converting the fibers from slow motion to rapid motion, mutual slippage occurs between the fibers, so that the linear density of the fiber strip is reduced, the point of converting the fibers from slow motion to rapid motion is called as the speed change point of the fibers, the speed change points of the fibers in the fiber strip in the drafting zone form the distribution of the speed change points in the drafting zone, and the specific embodiment of online detection on the distribution of the speed change points of the fibers in the drafting zone is as follows:
example 1
The present embodiment provides an optimal implementation manner, and particularly relates to an online detection device and method for the distribution of speed change points in a drafting zone. An on-line detection device for distribution of variable speed points in a drafting zone comprises an illumination device and a projection device, wherein the illumination device and the projection device are installed in the drafting zone, the illumination device comprises a light-emitting tube 5, the light-emitting tube 5 is fixedly installed above a fiber strip of the drafting zone through a first fixing device, the light-emitting tube 5 is installed at any position above the drafting zone and can be always completely irradiated on all the fiber strips in the drafting zone, the light-emitting tube 5 can be moved after being installed but is required to be always completely irradiated on all the fiber strips in the drafting zone in the moving process, and the brightness of the light-emitting tube 5 can be adjusted within a certain range through an adjusting device; the projection device comprises a fluorescent screen 6, a rectangular coordinate system is arranged on the fluorescent screen 6, the rectangular coordinate system comprises an abscissa and an ordinate, the junction of the abscissa and the ordinate is an origin, when the light-emitting tube 5 emits light and irradiates the fluorescent screen 6, the irradiated part on the fluorescent screen 6 presents bright color due to the fluorescent effect under the action of illumination, the part on the fluorescent screen 6 which is not irradiated due to the blocking of fiber strips in a drafting zone is still in primary color, so that the non-irradiated part is directly displayed on the fluorescent screen 6, completely same unit cells are divided on the fluorescent screen 6 in the rectangular coordinate system, and each unit cell is a square with the same length and width; the fluorescent screen 6 is fixedly arranged below the fiber strips in the drafting zone through a second fixing device, the fluorescent screen 6 is arranged at any position below the drafting zone and can be completely positioned above the fluorescent screen 6 by always keeping the projection of all the fiber strips in the drafting zone, and the fluorescent screen 6 is required to be completely fixed after being arranged, namely, the position is kept unchanged in the primary test process.
The embodiment also provides an online detection method for the distribution of the speed change points in the drafting zone, which comprises the following steps:
step one, installation: firstly, the illumination device and the projection device are respectively arranged above and below the fiber strips in the drafting zone, and the projected fiber strips in the drafting zone are displayed on the fluorescent curtain 6 below through the irradiation of the light emitted by the light emitting tube 5 of the illumination device;
wherein, due to the blocking effect of the fiber strips on the light emitted by the light-emitting tube 5, the projected parts of the fiber strips are displayed on the fluorescent screen 6 in dark color, and no other parts of the fiber strips are displayed on the fluorescent screen 6 in bright color.
Step two, obtaining a mass distribution change area of the fiber strips in the drafting area: according to the projection obtained in the step one, the abscissa of the rectangular coordinate system on the fluorescent screen 6 is taken as the bottom side, the edge line of the fiber strip on the upper side of the formed projection along the length direction of the fiber strip is the upper side, the edge line of the fiber strip on the lower side is the lower side, the coordinates of the upper and lower side points of the fiber strip at each unit grid point are obtained through the unit grids divided on the fluorescent screen 6, then, the acquired coordinate information of the upper side point and the lower side point of each fiber strip is transmitted to a client through an interface on the fluorescent screen 6, the client directly draws an upper side curve and a lower side curve of the fiber strip in the drafting zone according to the acquired coordinate information of the upper side point and the lower side point, and an area between the upper side curve and the lower side curve is a mass distribution change area of the fiber strip in the drafting zone;
in order to enable the obtained coordinates of each of the upper side and the lower side of the fiber strip to be more accurate, the length and the width of a cell on the fluorescent curtain 6 are set within 0.1mm, the unit grid is small, the horizontal coordinate and the vertical coordinate of the upper side point of the fiber strip at each unit grid point are obtained, the coordinate of the unit grid close to the upper side point of the fiber strip is directly adopted as the coordinate of the unit grid, the horizontal coordinate and the vertical coordinate of the lower side point of the fiber strip at each unit grid point are also obtained, and the coordinate of the unit grid close to the lower side point of the fiber strip is directly adopted as the coordinate of the unit grid; the client has certain independent computing capacity.
Step three, acquiring a mass distribution curve of the fiber strip in the drafting zone: according to the second step, equally dividing the upper side curve and the lower side curve into a plurality of parts along the abscissa of the rectangular coordinate system on the fluorescent screen 6, wherein each part of the plurality of parts contains the same number of unit grids, calculating the area of the region between the upper side curve and the lower side curve in each part of the plurality of parts according to the mass distribution change region of the fiber strip in the drafting region obtained in the second step, discretely dividing the part between two adjacent grid units in each region into a small area region, and taking the part of the small area region approximate to a rectangle, taking the width of each grid unit as the width of the approximate rectangle region, taking the difference between the ordinate of the upper side curve corresponding to any grid unit and the ordinate of the upper side curve as the length of the approximate rectangle region, and sequentially and directly calculating the area of each approximate rectangle region, and then adding the areas of all the approximately rectangular areas in each area to obtain the area of each area, taking the obtained area value of each area as a vertical coordinate, and selecting the horizontal coordinate corresponding to each area value at any equal interval according to actual needs, thereby drawing the mass distribution curve of the fiber strips in the drafting area on the rectangular coordinate system.
Step four, acquiring a distribution curve of speed change points of the fiber strips in the drafting zone: according to the area value of each equal division area between the upper side curve and the lower side curve of the fiber sliver obtained in the step three, subtracting the area value with the corresponding abscissa being small from the area value with the corresponding abscissa being large in two adjacent area values in sequence, so as to obtain one less area value difference value than the equal division area in sequence, then taking each obtained area value difference value as a vertical coordinate, selecting the abscissa corresponding to each area value difference value at any equal interval, and drawing a distribution curve of the speed change points of the fiber sliver in the drafting area on a rectangular coordinate system;
in the drafting process, fibers in the fiber strips in the drafting zone are subjected to a variable-speed motion process of converting slow motion into fast motion, so that mutual sliding action among the fibers in the fiber strips is realized, and a drafting and thinning process of the fiber strips in the drafting zone is realized.
The invention adds an illumination device above a front row and a back row of rollers in a drafting zone, adds a fluorescent curtain 6 below the two rows of rollers, establishes a rectangular coordinate system on the fluorescent curtain 6, is provided with a unit grid in the rectangular coordinate system, when testing, irradiates fiber strips in the drafting zone by light rays emitted by the illumination device above, thereby completely presenting the projection of the fiber strips on the fluorescent curtain 6, then obtains coordinates of upper and lower sides of the fiber strip projection along the length direction of fiber strips according to the rectangular coordinate system on the fluorescent curtain 6 and the unit grid, thereby transmitting each coordinate obtained by an interface of the fluorescent curtain 6 to a client, obtaining an upper curve equation of the upper side and a lower curve equation of the lower side of the fiber strips in the drafting zone by the client, then equally dividing the upper curve and the lower curve into a plurality of parts along the horizontal coordinate, calculating the area between the upper curve and the lower curve in each section by discrete cutting, and finally calculating the area difference between the two adjacent sections to obtain the distribution curve of the speed change points of the fiber strips in the drafting zone. The device is simple, the manufacturing cost is low, and the device can detect the speed change point distribution of the fiber strips in the drafting zone in real time, so that the quality of the drafting quality can be monitored in real time.
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 application 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 meaning of "and/or" as used herein is intended to include both the individual components or both.
The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components via other components.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. An on-line measuring device of speed change point distribution in draft zone which characterized in that: the device comprises an illumination device and a projection device, wherein the illumination device and the projection device are respectively arranged above and below a fiber strip in a drafting zone, the illumination device, the projection device and the fiber strip in the drafting zone are coaxial, and the illumination device completely presents the projection of the fiber strip in the drafting zone on the projection device.
2. An on-line detecting device for the distribution of the speed changing points in the draft zone according to claim 1, wherein: the illumination device comprises a light emitting tube (5), a first fixing device and an adjusting device, wherein the light emitting tube (5) is fixedly arranged at the position above the fiber strips in the drafting zone through the first fixing device, and the adjusting device adjusts the brightness of the light emitting tube (5).
3. An on-line detecting device for the distribution of the speed changing points in the draft zone according to claim 2, wherein: the projection device comprises a fluorescent curtain (6) and a second fixing device, wherein a rectangular coordinate system is arranged on the fluorescent curtain (6), and a plurality of unit grids formed by unit grids with the same size are divided on the fluorescent curtain (6) with the rectangular coordinate system; the fluorescent curtain (6) is fixedly arranged at the lower position of the fiber strips in the drafting zone through the second fixing device.
4. An on-line detecting device for the distribution of the speed changing points in the draft zone according to claim 3, wherein: the length and width of the unit cells on the fluorescent curtain (6) are set within 0.1 mm.
5. An on-line detecting device for the distribution of the speed changing points in the draft zone according to claim 3, wherein: the light emitting tube (5) is movable and can always keep the light rays to completely irradiate all the fiber strips in the drafting zone; the fluorescent curtain (6) always keeps the projection of all the fiber strips in the drafting zone to be positioned completely above the fluorescent curtain (6), and the position of the fluorescent curtain (6) is kept unchanged in the same test process.
6. An on-line detection method for the distribution of speed change points in a drafting zone, comprising the steps of:
step one, installation: the light emitting tube (5) is fixedly arranged above the fiber strips in the drafting zone through the first fixing device, and the fluorescent curtain (6) is fixedly arranged below the fiber strips in the drafting zone through the second fixing device;
step two, obtaining a mass distribution change area of the fiber strips in the drafting area: the light emitting tube (5) completely presents the projection of the fiber strips in the drafting area on the fluorescent curtain (6), at the moment, on the fluorescent curtain (6), by taking the abscissa on the fluorescent curtain (6) as the bottom side, the edge line of the fiber strip on one side, which is positioned above the formed projection along the length direction of the fiber strip, is an upper side, and the edge line of the fiber strip on one side, which is positioned below the formed projection is a lower side, the coordinates of the upper side point and the lower side point of the fiber strip at each unit grid point are obtained through the unit grids divided on the fluorescent curtain (6), then the obtained coordinate information of the upper side point and the lower side point of each fiber strip is transmitted to a client, the client has certain independent computing capability, and the client directly draws the upper side curve and the lower side curve of the fiber strip in the drafting area according to the obtained coordinate information of the upper side point and the lower side point, the area between the upper side curve and the lower side curve is the mass distribution change area of the fiber strip in the drafting area;
step three, acquiring a mass distribution curve of the fiber strip in the drafting zone: equally dividing the upper side curve and the lower side curve into a plurality of parts along the abscissa of the fluorescent screen (6), wherein each part of the parts contains the same multiple of the number of unit grids, calculating the area of a region between the upper side curve and the lower side curve in each part of the parts according to the mass distribution change region of the fiber strip in the drafting region obtained in the step two, discretely dividing the part between two adjacent grid units in each region into a small area region, approximating the part into a rectangular region, taking the width of each grid unit as the width of the approximated rectangular region, taking the difference between the ordinate of the upper side curve corresponding to any grid unit and the ordinate of the upper side curve as the length of the approximated rectangular region, and sequentially and directly calculating the area of each approximated rectangular region, and then adding the areas of all the approximated rectangular regions in each region to obtain the area of each region Area, then taking the obtained area value of each area as a vertical coordinate, and selecting the horizontal coordinate corresponding to each area value at any equal interval, thereby drawing a mass distribution curve of the fiber strips in the drafting zone on a rectangular coordinate system;
step four, acquiring a distribution curve of speed change points of the fiber strips in the drafting zone: and D, subtracting the area value with the larger abscissa from the area value with the smaller abscissa in two adjacent area values in sequence according to the area value of each equal division region between the upper side curve and the lower side curve of the sliver obtained in the step three, thereby obtaining one less area value difference value than the equal division region in sequence, taking each obtained area value difference value as the ordinate, and selecting the abscissa corresponding to each area value difference value at any equal interval, thereby drawing the distribution curve of the speed change points of the sliver in the drafting region on a rectangular coordinate system.
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| CN202010290426.0A CN111519296A (en) | 2020-04-14 | 2020-04-14 | On-line detection device and method for distribution of speed change points in drafting zone |
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| CN202010290426.0A CN111519296A (en) | 2020-04-14 | 2020-04-14 | On-line detection device and method for distribution of speed change points in drafting zone |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1483870A (en) * | 2002-08-08 | 2004-03-24 | 里特机械公司 | Spinning frame having multi-stage condensation draft unit |
| JP2007162153A (en) * | 2005-12-12 | 2007-06-28 | Teijin Techno Products Ltd | Fluff detection device and fluff detection method |
| CN103352283A (en) * | 2013-07-19 | 2013-10-16 | 慈溪思达电子科技有限公司 | Identification method for judging fine motion sate of image with yarn-state sensor |
| CN208270435U (en) * | 2018-04-20 | 2018-12-21 | 全球能源互联网研究院有限公司 | A kind of fiber on-Line Monitor Device |
-
2020
- 2020-04-14 CN CN202010290426.0A patent/CN111519296A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1483870A (en) * | 2002-08-08 | 2004-03-24 | 里特机械公司 | Spinning frame having multi-stage condensation draft unit |
| JP2007162153A (en) * | 2005-12-12 | 2007-06-28 | Teijin Techno Products Ltd | Fluff detection device and fluff detection method |
| CN103352283A (en) * | 2013-07-19 | 2013-10-16 | 慈溪思达电子科技有限公司 | Identification method for judging fine motion sate of image with yarn-state sensor |
| CN208270435U (en) * | 2018-04-20 | 2018-12-21 | 全球能源互联网研究院有限公司 | A kind of fiber on-Line Monitor Device |
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