CN113652782A - Impurity-removing and carding method and device of impurity-adaptive rotor spinning machine - Google Patents
Impurity-removing and carding method and device of impurity-adaptive rotor spinning machine Download PDFInfo
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- CN113652782A CN113652782A CN202011631757.2A CN202011631757A CN113652782A CN 113652782 A CN113652782 A CN 113652782A CN 202011631757 A CN202011631757 A CN 202011631757A CN 113652782 A CN113652782 A CN 113652782A
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- impurity
- carding
- air injection
- cotton sliver
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
- D01H4/32—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
- D01H4/36—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls with means for taking away impurities
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use
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Abstract
The invention provides an impurity self-adaptive impurity removing and carding method and device for a rotor spinning machine, and relates to the technical field of spinning equipment. The method comprises the following impurity detection steps: when the cotton sliver is fed into the carding cavity, impurity information of the cotton sliver is detected by the impurity detector, and a detection result is sent to the air injection control device; self-adaptive impurity gas injection: when the cotton sliver is carded by the carding roller, the air injection control device controls the air injection holes corresponding to the region where the impurities are located on the carding roller to inject air according to the detection result so as to improve the looseness of the cotton sliver in the region where the impurities are located; impurity removing and carding: when the carding roller combs the cotton sliver, the air supply channel supplies air to the carding cavity, and the impurities or part of the impurities fall into the impurity discharge belt to be discharged through the impurity discharge area of the carding cavity under the action of self gravity. The invention realizes the self-adaptive air injection based on the impurity characteristics of the cotton sliver, is convenient for separating impurities from the cotton sliver and has the impurity removal effect and the energy-saving requirement.
Description
Technical Field
The invention relates to the technical field of spinning equipment, in particular to a impurity removing and carding method and device of an impurity self-adaptive rotor spinning machine.
Background
The rotor spinning machine has become the most mature spinning form with the widest application range and larger economic and social effects in the novel spinning. Various impurities such as polypropylene fiber, hair and 'three-filament' are often generated in the spinning process, the quality of the product produced by raw materials is greatly reduced due to the generation of the impurities, and therefore impurities in cotton slivers need to be removed in the spinning process.
At present, in the air suction type rotor spinning machine on the market, the carding and impurity stripping have two modes: the first is to use the centrifugal force of impurities to fall impurities freely. The carding roller and a vertical surface are arranged at a certain included angle alpha (alpha is less than 90 degrees), the impurity stripping direction and a horizontal plane form an angle alpha, and the impurity removal is called as free impurity removal by means of the centrifugal force and gravity combined action generated under the driving of the high-speed rotation of the carding roller. The mode is longer to carry fibre transfer passageway toward the revolving cup for the fibre obtains abundant straightening, and the resultant yarn uniformity is better, and the energy consumption is low. The second is an active gettering method. The carding roller is vertically arranged, the impurity stripping direction and the horizontal plane are in a parallel state, the impurity removal is realized by completely depending on airflow high negative pressure suction, the effective impurity separation can be also realized on various raw materials with larger impurity content, and the application range is wider.
However, the existing impurity removal scheme has the following defects:
1) when the free impurity falling mode is adopted, in the impurity separation process, light impurities with light weight, such as short fibers, are not thrown far away when being separated, are close to the fiber conveying area, are easy to be sucked back to the carding cavity after being accumulated in the stripping area under the action of fiber conveying negative pressure airflow, and are rolled and sucked back, so that the yarn breakage rate is increased, and the adaptability to regeneration raw materials with more short fibers and impurities is poor. When an active impurity suction mode is adopted, the impurities can be stripped along the horizontal plane only by requiring higher impurity suction negative pressure, and the number of the removed impurities is changed due to fine fluctuation of the impurity suction negative pressure, so that the variation of the thickness of finished yarns is larger; but also has the disadvantages of high energy consumption of the equipment and easy blockage of the gettering channel. That is to say, the existing rotor spinning machine carding and impurity stripping mode can not realize the complete improvement in the aspects of raw material adaptability, yarn quality consistency, low energy consumption and the like.
2) Regardless of free impurity falling or active impurity absorption, all cotton slivers entering the carding cavity are subjected to impurity removal and carding based on the same impurity removal process, and the impurity removal process cannot be adaptively adjusted according to impurity characteristics of cotton sliver raw materials, such as impurity distribution areas, impurity type characteristics and the like. In fact, the impurities are not uniformly distributed on the cotton slivers, and some cotton slivers have smaller impurities and some cotton slivers have more impurities; the impurity types and the connection between the impurities and the cotton sliver are different, some impurities are connected with the effective fibers more tightly, some impurities are connected with the effective fibers more loosely, and the like. For example, for impurities which are tightly connected, a large external force is often required to separate the impurities from the cotton sliver, while impurities which are loosely connected are easily separated from the cotton sliver, and a large external force is not required to be provided.
Aiming at the dilemma of the market of the existing spinning machine, how to provide a technical scheme for self-adaptive impurity removal and carding according to the impurity characteristics of cotton slivers is a technical problem which needs to be solved urgently at present. Further, how to consider raw material adaptability, yarn quality consistency and low energy consumption is also a technical problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to: overcomes the defects of the prior art and provides a impurity-removing and carding method and a device of an impurity-self-adaptive rotor spinning machine. According to the invention, the impurity characteristics of the cotton sliver are detected by the impurity detector, the looseness of the cotton sliver in the region where the impurities are located is improved through the air injection holes on the carding roller according to the detection result so as to improve the impurity discharge efficiency, and the air injection is not needed in the cotton sliver region without the impurities, so that the self-adaptive air injection based on the impurity characteristics of the cotton sliver is realized, the impurities are conveniently separated from the cotton sliver, and the impurity discharge effect and the energy-saving requirement are considered. Furthermore, the free impurity falling and accurate impurity absorption are organically combined, the impurity rolling and reverse absorption of the impurity discharging area of the carding cavity are reduced or eliminated, and the method has the characteristics of wide raw material adaptability, good yarn quality consistency and low energy consumption.
In order to achieve the above object, the present invention provides the following technical solutions:
a impurity-removing and carding method of an impurity-adaptive rotor spinning machine, wherein the rotor spinning machine comprises a carding cavity provided with a carding roller, the carding cavity is communicated with a sliver feeding channel and a fiber conveying channel, and an air supplementing channel and a carding cavity impurity removing area are arranged below the corresponding carding cavity, and the impurity-removing and carding method comprises the following steps:
and (3) impurity detection: when a cotton sliver is fed into the carding chamber through the cotton sliver feeding channel, impurity information of the cotton sliver is detected by an impurity detector arranged in the cotton sliver feeding channel, and a detection result is sent to the air injection control device, wherein the impurity information comprises information of an area where the impurity is located;
self-adaptive impurity gas injection: when the cotton sliver fed into the carding cavity is carded by the carding roller, the air injection control device controls the air injection holes corresponding to the region where the impurities are located on the carding roller to inject air according to the detection result so as to improve the cotton sliver looseness of the region where the impurities are located, so that the impurities are separated from the effective fibers;
impurity removing and carding: the air injection step and the self-adaptive impurity injection step are carried out simultaneously, when the cotton sliver is combed by the carding roller, the air is supplied to the carding cavity through the air supply channel, and the impurities or part of the impurities fall into the impurity discharge belt through the impurity discharge area of the carding cavity and are discharged under the action of self gravity.
Further, the air injection holes in the carding roller are divided into a plurality of areas, each area is provided with one or more air injection holes, and the air injection control device can control the air injection area and/or the air injection amount of the carding roller according to the detection result.
Further, the impurity detector comprises a camera, an image recognition unit and an impurity evaluation unit, the step of detecting the impurity information of the cotton sliver is as follows,
shooting image data of the cotton sliver in the cotton sliver feeding channel through a camera, and transmitting the cotton sliver image data to an image identification unit;
the image identification unit identifies cotton sliver image data, acquires impurity distribution information and impurity type information in the cotton sliver, and sends the impurity distribution information and the impurity type information to the impurity evaluation unit;
according to the impurity distribution information and the impurity type information, the impurity evaluation unit evaluates the cotton sliver impurity grade based on a preset evaluation model, marks an impurity key area, and sends the evaluation grade and the marked area information to the air injection control device.
Further, in the impurity adaptive air-jetting step, the air-jetting control means can control the air-jetting holes of the corresponding area on the opening roller to jet air according to the mark area information, and select the air-jetting amount corresponding to the evaluation level according to the evaluation level.
Furthermore, impurity stripping surfaces which are obliquely arranged downwards are arranged corresponding to the impurity discharging areas of the carding cavity, and impurity absorbing openings are formed in the impurity stripping surfaces for absorbing impurities;
when impurities are discharged, an impurity stripping channel which is inclined downwards is formed at the lower part of the carding roller through the impurity stripping surface, the impurity stripping channel comprises an effective fiber area, a turning reverse suction area and a free impurity falling area from top to bottom, the impurities in the turning reverse suction area are sucked into the impurity suction channel through the impurity suction port and discharged, and the impurities in the free impurity falling area freely fall into the impurity discharge belt and are discharged.
Furthermore, the suction pressure of the gettering channel is adjustable, and the suction pressure of the gettering channel is increased to increase the negative pressure suction of the gettering port to the impurities in the rollover and reverse suction area under the condition that the air injection amount is increased by the air injection control device.
Further, the impurity stripping surface and the horizontal plane are arranged in an angle of 60-70 degrees and inclined downwards.
The invention also provides an impurity self-adaptive impurity removing and carding device of the rotor spinning machine, which comprises an carding cavity provided with a carding roller, wherein the carding cavity is communicated with a sliver feeding channel and a fiber conveying channel, and an air replenishing channel and an impurity removing area of the carding cavity are arranged below the corresponding carding cavity;
a plurality of air injection holes are arranged on the surface of the carding roller in an array mode and are connected with an air injection control device; the impurity detector is arranged corresponding to the cotton sliver feeding channel and is connected with the air injection control device;
the impurity detector is configured to detect impurity information of the cotton sliver and send a detection result to the air injection control device when the cotton sliver is fed into the carding cavity through the cotton sliver feeding channel, wherein the impurity information comprises information of an area where the impurity is located;
the air injection control device is used for triggering the air injection of the air injection holes aiming at the region where the impurities are located, and is configured to control the air injection holes corresponding to the region where the impurities are located on the carding roller to inject air according to a detection result so as to improve the looseness of the cotton sliver in the region where the impurities are located when the cotton sliver fed into the carding chamber is carded by the carding roller, so that the impurities are separated from the effective fibers;
the air supply channel is used for supplying air to the carding cavity when the carding roller combs the cotton sliver, and impurities or partial impurities fall into the impurity discharge belt through the impurity discharge area of the carding cavity and are discharged under the action of self gravity.
Further, the impurity detector comprises a camera, an image recognition unit and an impurity evaluation unit;
the camera is used for shooting image data of cotton slivers in the cotton sliver feeding channel and transmitting the image data to the image recognition unit; the image identification unit is used for identifying and analyzing the cotton sliver image data to acquire impurity distribution information and impurity type information in the cotton sliver and then sending the impurity distribution information and the impurity type information to the impurity evaluation unit; the impurity evaluation unit is used for evaluating the cotton sliver impurity grade and marking an impurity key area according to the impurity distribution information and the impurity type information and sending the evaluation grade and the marking area information to the air injection control device;
the air injection control device can control the air injection holes of the corresponding area on the carding roller to inject air according to the marking area information, and selects the air injection amount corresponding to the evaluation grade according to the evaluation grade.
Furthermore, impurity stripping surfaces which are obliquely arranged downwards are arranged corresponding to the impurity discharging areas of the carding cavity, and impurity absorbing openings are formed in the impurity stripping surfaces for absorbing impurities; an impurity stripping channel which inclines downwards is formed at the lower part of the carding roller through the impurity stripping surface, the impurity stripping channel comprises an effective fiber area, a turning back suction area and a free impurity falling area from top to bottom, impurities in the turning back suction area are sucked into the impurity suction channel through the impurity suction port and discharged, and impurities in the free impurity falling area freely fall into the impurity discharge belt and are discharged.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects as examples:
survey silver impurity characteristic through the impurity detector to improve the silver bulk degree in order to improve impurity discharge efficiency in the region of impurity place through the fumarole on the combing roller according to the probing result, the silver region of no impurity then need not to jet-propelled, so realized based on the self-adaptation jet-propelled of silver impurity characteristic, the impurity of being convenient for is separated from the silver, has compromise row miscellaneous effect and energy-conserving demand.
Furthermore, the free impurity falling and accurate impurity absorption are organically combined, the impurity rolling and reverse absorption of the impurity discharging area of the carding cavity are reduced or eliminated, and the method has the characteristics of wide raw material adaptability, good yarn quality consistency and low energy consumption.
Drawings
FIG. 1 is a flow chart of a impurity-adaptive impurity-removing and carding method of a rotor spinning machine according to an embodiment of the invention.
FIG. 2 is a schematic structural view of an opening roller with air injection holes according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating the operation of a trash detector for detecting a tampon according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of information transmission of the air injection control device according to the embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a impurity removing and carding device of a rotor spinning machine provided by the embodiment of the invention.
Fig. 6 is a sectional view of an impurity removal channel according to an embodiment of the present invention.
Description of reference numerals:
a trash removal carding unit 100;
the cotton sliver separating device comprises a shell 110, a carding roller 120, a fiber transfer area 121, an air injection hole 122, a cotton sliver feeding channel 130, a fiber conveying channel 140, an air supply channel 150, a carding cavity impurity discharge area 160, an impurity stripping channel 161, an effective fiber area 161a, a turning and back suction area 161b, a free impurity falling area 161c, an impurity stripping surface 170, a gettering port 171, a gettering channel 172, a suction pipe 173, an air blowing device 174 and an impurity detector 180.
Detailed Description
The impurity-removing and carding method and the impurity-removing and carding device of the rotor spinning machine with the self-adaptive impurity disclosed by the invention are further described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that technical features or combinations of technical features described in the following embodiments should not be considered as being isolated, and they may be combined with each other to achieve better technical effects. In the drawings of the embodiments described below, the same reference numerals appearing in the respective drawings denote the same features or components, and may be applied to different embodiments. Thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
It should be noted that the structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are only for the purpose of understanding and reading the present disclosure, and are not intended to limit the scope of the invention, which is defined by the claims, and any modifications of the structures, changes in the proportions and adjustments of the sizes and other dimensions, should be construed as falling within the scope of the invention unless the function and objectives of the invention are affected. The scope of the preferred embodiments of the present invention includes additional implementations in which functions may be executed out of order from that described or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
Examples
Referring to fig. 1, the invention provides a flow chart of a impurity-adaptive impurity-removing and carding method of a rotor spinning machine.
The rotor spinning machine comprises a carding cavity provided with a carding roller, the carding cavity is communicated with a cotton sliver feeding channel and a fiber conveying channel, and an air supplementing channel and a carding cavity impurity discharging area are arranged below the corresponding carding cavity. During spinning, cotton slivers are sent into the carding cavity through the cotton sliver feeding channel to be carded, and fibers after being carded enter the interior of the rotor through the fiber conveying channel, then come out from the condensation groove, are drawn into the false twisting disc and are made into yarns.
In this embodiment, the impurity removing and carding method specifically includes the following steps:
s100, impurity detection: when a cotton sliver is fed into the carding chamber through the cotton sliver feeding channel, impurity information of the cotton sliver is detected by an impurity detector arranged in the cotton sliver feeding channel, and a detection result is sent to the air injection control device, wherein the impurity information comprises information of an area where the impurity is located.
The corresponding cotton sliver feeding channel is provided with an impurity detector which is electrically or communicatively connected with the air injection control device.
The impurity information may further include impurity basic attribute information such as impurity name information and impurity type information. The impurity information may be from a preset impurity evaluation model. The impurity evaluation model may be, by way of example and not limitation, a mapping model with basic attributes of impurities, which is established based on information such as impurity images and impurity photoreaction characteristics (including anisotropy, light absorption performance, optical rotation behavior, and the like) of existing common impurities, so that, based on the input impurity images and/or the collected impurity photoreaction characteristic information, basic attribute information such as corresponding impurity names and impurity types may be obtained through the impurity evaluation model.
S200, self-adaptive impurity gas injection: when the cotton sliver fed into the carding cavity is carded by the carding roller, the air injection control device controls the air injection holes corresponding to the region where the impurities are located on the carding roller to inject air according to the detection result so as to improve the cotton sliver looseness of the region where the impurities are located, and therefore the impurities can be separated from the effective fibers conveniently.
As shown in FIG. 2, a plurality of air injection holes 122 are arranged on the surface array of the carding roller 120, and the air injection holes 122 are connected with an air injection control device. The arrangement mode of the air injection holes on the carding roller can be various arrays such as a matrix array, a plum blossom array, a hexagon array and the like, and the specific shape of the array should not be taken as a limitation to the invention.
Preferably, the air injection holes on the carding roller are divided into a plurality of areas, each area is provided with one or more air injection holes, and the air injection control device can control the air injection area and/or the air injection amount of the carding roller according to the detection result.
The air injection amount can be the air injection amount in unit time and/or the total air injection amount.
The air injection control device can be arranged on a controller of the air pump or the air conveying pipeline, and the air pump or the air conveying pipeline can blow air and convey air to the air injection holes through the air conveying pipeline under the control of the controller. In one embodiment, the plurality of gas injection holes in one zone are in a group, and each group of gas injection holes can be controlled by an independent controller. By way of example and not limitation, the air injection holes in the carding roller are divided into n areas, including the area 1 air injection holes, the area 2 air injection holes, the area n air injection holes, the air injection holes of each area are controlled by an independent controller, and all the controllers are connected with the main control part of the air injection control device. The main control part of the air injection control device can evaluate a corresponding target area after the cotton sliver enters the carding roller according to the cotton sliver impurity information detected by the impurity detector, and then control the air injection holes corresponding to the target area to inject air.
Furthermore, a pressure sensor can be arranged in the gas injection hole, the gas injection pressure of the gas injection hole is monitored through the pressure sensor, the detected value of the gas injection pressure can be fed back to the controller, and the controller in the corresponding area can adjust the gas injection amount and/or the total gas injection amount in unit time according to the gas injection pressure.
S300, impurity removing and carding: the air injection step and the self-adaptive impurity injection step are carried out simultaneously, when the cotton sliver is combed by the carding roller, the air is supplied to the carding cavity through the air supply channel, and the impurities or part of the impurities fall into the impurity discharge belt through the impurity discharge area of the carding cavity and are discharged under the action of self gravity.
Preferably, the foreign substance detector includes a camera, an image recognition unit, and a foreign substance evaluation unit. Referring to fig. 3, the steps of detecting the foreign material information of the tampon using the foreign material detector are as follows:
s110, shooting image data of the cotton sliver in the cotton sliver feeding channel through a camera, and transmitting the cotton sliver image data to an image recognition unit.
And S120, the image identification unit identifies the cotton sliver image data, acquires impurity distribution information and impurity type information in the cotton sliver, and sends the impurity distribution information and the impurity type information to the impurity evaluation unit.
S130, according to the impurity distribution information and the impurity type information, the impurity evaluation unit evaluates the cotton sliver impurity grade based on a preset evaluation model, marks an impurity key area, and sends the evaluation grade and the marked area information to the air injection control device.
Preferably, in the foreign matter adaptive air injection step S200, the air injection control means can control the air injection holes of the corresponding area on the opening roller to inject air according to the mark area information, and select the air injection amount corresponding to the evaluation level according to the evaluation level. By way of example and not limitation, referring to fig. 4, for example, the air injection holes on the carding roller are divided into n regions, namely, a region 1 air injection hole, a region 2 air injection hole, a. First, the air jet control device triggers a start command (zone control command) for the 1 st zone air jet corresponding to the zone where the foreign matter is located according to the marking zone information, and selects the air jet amount Q2 (air jet flow control command) corresponding to the evaluation grade according to the evaluation grade, that is, controls the 1 st zone air jet to jet air to the zone where the foreign matter is located in the cotton sliver by the air jet amount Q2.
In the embodiment, considering that light impurities with light weight such as short fibers are close to the fiber conveying area and are easy to suck back to the carding cavity after being accumulated in the stripping area under the action of fiber conveying negative pressure airflow to generate turning and back suction, the impurity discharging structure combining free impurity falling and accurate impurity suction is further arranged. Specifically, the impurity removing area corresponding to the carding cavity is also provided with an impurity removing surface which is arranged obliquely downwards, and the impurity removing surface is provided with an impurity absorbing opening for absorbing impurities. In the embodiment, the impurity stripping surface and the horizontal plane are arranged in an angle of 60-70 degrees and inclined downwards, and an angle of 65 degrees is preferred.
When impurities are discharged, an impurity stripping channel which inclines downwards is formed at the lower part of the carding roller through the impurity stripping surface. Under the comprehensive action of the air injection and blast action of the air injection holes, the centrifugal force of the carding roller, the air supply supporting force and the self gravity, the impurity stripping channel can comprise an effective fiber area, a turning and back-suction area and a free impurity falling area from top to bottom. The long fibers in the effective fiber area are kept in the carding cavity to participate in yarn formation. The impurities in the turning back suction area are sucked into the impurity suction channel through the impurity suction port and discharged. The impurities in the free impurity falling area fall into the impurity discharging belt freely and are discharged.
In this embodiment, the suction pressure of the gettering passage connected to the gettering port is adjustable. Preferably, for the area with a large amount of impurities in the cotton sliver, the air injection amount is increased by the air injection control device, and simultaneously, the suction pressure of the impurity suction channel can be increased to increase the negative pressure suction force of the impurity suction port on the impurities in the turning and back suction area.
The invention also provides a trash removal and carding device of the rotor spinning machine for implementing the trash removal and carding method.
The impurity-removing and carding device of the rotor spinning machine comprises a carding cavity provided with a carding roller, wherein the carding cavity is communicated with a cotton sliver feeding channel and a fiber conveying channel, and an air supplementing channel and an impurity removing area of the carding cavity are arranged below the corresponding carding cavity. A plurality of air injection holes are arranged on the surface of the carding roller in an array mode and are connected with an air injection control device; an impurity detector is arranged corresponding to the cotton sliver feeding channel and is connected with the air injection control device.
The impurity detector is configured to detect impurity information of the cotton sliver and send a detection result to the air injection control device when the cotton sliver is fed into the carding cavity through the cotton sliver feeding channel, wherein the impurity information comprises information of an area where the impurity is located. The air injection control device is used for triggering the air injection of the air injection holes aiming at the region where the impurities are located, and the air injection control device is configured to control the air injection holes corresponding to the region where the impurities are located on the carding roller to inject air according to a detection result when the cotton sliver fed into the carding chamber is carded by the carding roller so as to improve the cotton sliver looseness of the region where the impurities are located, and therefore the impurities are separated from the effective fibers. The air supply channel is used for supplying air to the carding cavity when the carding roller combs the cotton sliver, and impurities or partial impurities fall into the impurity discharge belt through the impurity discharge area of the carding cavity and are discharged under the action of self gravity.
The impurity detector may specifically include a camera, an image recognition unit, and an impurity evaluation unit. The camera is used for shooting image data of cotton slivers in the cotton sliver feeding channel and transmitting the image data to the image recognition unit; the image identification unit is used for identifying and analyzing the cotton sliver image data to acquire impurity distribution information and impurity type information in the cotton sliver and then sending the impurity distribution information and the impurity type information to the impurity evaluation unit; the impurity evaluation unit is used for evaluating the cotton sliver impurity grade and marking an impurity key area according to the impurity distribution information and the impurity type information and sending the evaluation grade and the marking area information to the air injection control device. The air injection control device can control the air injection holes of the corresponding area on the carding roller to inject air according to the marking area information, and selects the air injection amount corresponding to the evaluation grade according to the evaluation grade.
Impurity stripping surfaces which are obliquely arranged downwards are arranged corresponding to the impurity discharging areas of the carding cavity, and impurity absorbing openings are formed in the impurity stripping surfaces to absorb impurities. An impurity stripping channel which inclines downwards is formed at the lower part of the carding roller through the impurity stripping surface, the impurity stripping channel comprises an effective fiber area, a turning back suction area and a free impurity falling area from top to bottom, impurities in the turning back suction area are sucked into the impurity suction channel through the impurity suction port and discharged, and impurities in the free impurity falling area freely fall into the impurity discharge belt and are discharged.
The impurity removing and combing device of the rotor spinning machine and the impurity removing structure combining the free fall impurity and the accurate impurity absorption will be described in detail with reference to fig. 5 and 6.
Referring to fig. 5, the impurity removing and carding device 100 includes a housing 110 having a carding chamber, in which carding rolls 120 are installed, and the housing 110 is provided with a sliver feeding passage 130 and a fiber transferring passage 140 which are respectively communicated with the carding chamber. During spinning, cotton slivers are sent into the carding cavity for carding through the cotton sliver feeding channel 130, and carded fibers enter the interior of the rotor through the fiber conveying channel 140, then come out from the condensation groove, are drawn into the false twisting disc and are made into yarns.
The air supply channel 150 and the impurity discharge area 160 of the carding cavity are correspondingly arranged below the carding cavity. The air supply of the carding cavity is carried out through the air supply channel 150, and the air supply direction corresponds to the lower part of the carding roller 120.
An impurity stripping surface 170 which is obliquely arranged downwards is arranged on the shell 110 corresponding to the impurity discharging area 160 of the carding cavity, and an impurity suction port 171 is arranged on the impurity stripping surface 170. Preferably, the impurity stripping surface and the horizontal plane are arranged at an angle of 65 degrees and are inclined downwards.
The impurity peeling passage 161 inclined downward may be formed at a lower portion of the opening roller 120 by the impurity peeling surface 170, and the impurity peeling passage 161 may include an effective fiber region, a turn-up suck-back region, and a free fall impurity region from top to bottom. The impurities in the turning and reverse suction area can be sucked into the impurity suction channel through the impurity suction port 171 and then discharged, and the impurities in the free impurity falling area can freely fall into the impurity discharge belt and then be discharged. Preferably, the impurity suction port, the impurity suction channel and the impurity discharge area of the carding cavity are integrally formed. The front end of the gettering channel 172 is connected to the gettering port 171, or the gettering port 171 is provided as a part of the front end of the gettering channel 172. The gettering channel 172 is preferably an L-shaped channel, the inner corner of which is rounded. The tail of the gettering channel 172 is communicated with a gettering main air pipe through a suction pipe 173.
The left side of the carding roller 120 is provided with a fiber transfer area 121 for transferring the carded sliver. The fiber transfer area 121 is arranged below the fiber conveying channel 140, and the cotton sliver passes through the fiber transfer area 121 after carding and is conveyed to the rotor through the fiber conveying channel 140. The surface of the carding roller 120 is arrayed with a plurality of air injection holes 122, and the air injection holes 122 are connected with an air injection control device.
The foreign matter detector 180 is provided corresponding to the sliver feeding passage 130, and the foreign matter detector 180 is connected to the air injection control device. During spinning, impurity information of cotton slivers in the cotton sliver feeding channel 130 is detected through the impurity detector 180, and a detection result is sent to the air injection control device, and the air injection control device can control the air injection area and/or the air injection amount of the air injection holes 122 on the carding roller 120 according to the detection result.
Preferably, sliver feeding channel 130 may be provided with a cotton feeding horn, a cotton feeding roller, and a cotton feeding plate, impurity detector 180 includes a camera, an image recognition unit, and an impurity evaluation unit, and the camera may be located inside the cotton feeding horn. And the camera is used for shooting image data of the cotton sliver in the cotton feeding horn and transmitting the image data to the image identification unit. And the image identification unit is used for identifying and analyzing the cotton sliver image data to acquire impurity distribution information and impurity type information in the cotton sliver and then sending the impurity distribution information and the impurity type information to the impurity evaluation unit. The impurity evaluation unit is used for evaluating the cotton sliver impurity grade and marking an impurity key area according to the impurity distribution information and the impurity type information and sending the evaluation grade and the marking area information to the air injection control device. The main control unit of the air injection control device can control the air injection holes 122 of the corresponding area on the carding roller 120 to inject air according to the marking area information, and can select the air injection amount corresponding to the evaluation grade according to the evaluation grade. By way of example and not limitation, for example, the impurity grade of the cotton sliver preset by the impurity type is 3 grades, namely an easily-separated impurity grade, a common impurity grade and an difficultly-separated impurity grade, wherein the air injection amount (which may be the total air injection amount and the unit time air injection amount at the beginning) corresponding to the easily-separated impurity grade is the smallest, the air injection amount corresponding to the common impurity grade is medium, and the air injection amount corresponding to the difficultly-separated impurity grade is the largest.
In this embodiment, the suction pressure of the gettering passage connected to the gettering port 171 is adjustable. Preferably, for the area with a large amount of impurities in the cotton sliver, the air injection amount is increased by the air injection control device, and meanwhile, the suction pressure of the impurity suction channel can be increased to increase the negative pressure suction force of the impurity suction port 171 to the impurities in the turning back suction area.
Above-mentioned technical scheme that this embodiment provided can utilize image recognition technology to carry out the impurity detection to control the fumarole according to impurity testing result intelligence and carry out the gas injection in order to improve the cotton sliver looseness in impurity place region on the combing roller, thereby increase impurity discharge efficiency. Meanwhile, the air injection amount corresponding to the evaluation grade can be selected according to the impurity evaluation grade, the yarn quality is improved, the intelligence and the adaptability of impurity removal work are improved, and the energy consumption is reduced.
Further, the impurities can be classified and discharged under the comprehensive acting forces of the air injection and blast action of the air injection holes, the centrifugal force of the carding roller, the negative pressure suction force of the impurity suction port on the impurity stripping surface, the self gravity of the impurities and the like. Referring to fig. 6, for the uppermost effective fiber area 161a, the fiber length of the area is long, the unit volume weight is small, and the carding air supply supporting force is larger than the comprehensive acting force of the air jet blowing force, the centrifugal force and the gravity, so that the limited fibers are kept in the carding cavity to participate in yarn formation. For the middle turning back suction area 161b, the area is mainly composed of light impurities, short fibers and other impurities (because the carding air supply holding force and the air injection blowing force, the centrifugal force and the gravity are leveled, the part of impurities are easy to be sucked back into the carding body, and accidental broken ends are caused). The gettering is mainly used for removing light impurities, short velvet and the like and preventing the light impurities, the short velvet and the like from being reversely absorbed back to the carding cavity after being rolled, so that the gettering negative pressure requirement is not high, and the low energy consumption is ensured. For the lower free impurity falling area 161c, the area is mainly heavy impurities such as cotton neps, cotton seed hulls, short thread ends and the like, the unit volume weight is large, and the carding air supply supporting force is far smaller than the comprehensive acting force of air injection blast wind power, centrifugal force and gravity, so that the heavy impurities and the large impurities freely fall into an impurity discharging belt to be discharged. The scheme is particularly suitable for the regenerated raw materials with more impurity content, heavy impurities, large impurities and the like in the impurities are freely discharged by combing centrifugal force, light impurities, short fibers and the like in the impurities are transferred and removed by impurity absorption, impurity turning and reverse absorption in an impurity discharge area of a combing cavity are eliminated, effective fiber yarn formation is reserved to the maximum extent, accurate impurity removal is realized, high yield is guaranteed, nep broken ends caused by impurity turning and reverse absorption are reduced, and the spinning suitability of the regenerated raw materials is improved.
In another implementation manner of this embodiment, the impurity detector may further include an impurity auxiliary determination unit. The impurity auxiliary judging unit can comprise a transmitter and a receiver which are respectively positioned at two sides of the cotton feeding horn and are correspondingly arranged, and the receiver is connected with the impurity evaluating unit.
Specifically, the transmitter can be a polarized light source, when the cotton sliver enters the cotton feeding roller through the cotton feeding horn, polarized light of the polarized light source is received by the receiver after irradiating on the cotton sliver, and when impurities exist on the cotton sliver, the impurities change the polarized light through anisotropy, so that received information of the receiver changes, and the receiver sends the received information to the impurity evaluation unit to assist in impurity judgment.
By way of example only, the emitter may include a light emitting member as a light source and a polarizer, and the light emitted from the light emitting member is converted into linearly, circularly or elliptically polarized light by the polarizer. When the polarized light is irradiated into the cotton fiber, the light is not changed, and when the polarized light is irradiated into the foreign matter (foreign matter such as plastic), the polarized light is changed due to the anisotropy of the foreign matter, and the change can be detected by the receiver. Specifically, the receiver may include a light sensor and a detector, the light sensor may detect light and transmit a detected light signal to the detector, and the detector processes the light signal and then sends the processed light signal to the impurity evaluation unit to assist in impurity determination. By way of example and not limitation, when polarized light is irradiated in cotton fibers, light enters the light sensor and is detected by the light sensor, when polarized light is irradiated on impurities in the cotton sliver, the light is transmitted and deflected to prevent the light from being detected by the light sensor, and the time from the disappearance of the light to the re-detection of the light, the transmitted cotton sliver section is the impurity existence area (namely, the impurity existence area).
Other technical features are referred to in the previous embodiment and are not described in detail herein.
In the description above, the various components may be selectively and operatively combined in any number within the intended scope of the present disclosure. In addition, terms like "comprising," "including," and "having" should be interpreted as inclusive or open-ended, rather than exclusive or closed-ended, by default, unless explicitly defined to the contrary. All technical, scientific, or other terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. Common terms found in dictionaries should not be interpreted too ideally or too realistically in the context of related art documents unless the present disclosure expressly limits them to that.
While exemplary aspects of the present disclosure have been described for illustrative purposes, those skilled in the art will appreciate that the foregoing description is by way of description of the preferred embodiments of the present disclosure only, and is not intended to limit the scope of the present disclosure in any way, which includes additional implementations in which functions may be performed out of the order of presentation or discussion. Any changes and modifications of the present invention based on the above disclosure will be within the scope of the appended claims.
Claims (10)
1. The utility model provides an impurity self-adaptation rotor type open-end spinning machine arranges miscellaneous carding method, rotor type open-end spinning machine is including the carding chamber of installing the carding roller, the carding chamber communicates the cotton sliver and feeds for passageway and fibre transfer passage, corresponds carding chamber below and is equipped with tonifying qi passageway and the miscellaneous district of row of carding chamber, its characterized in that includes:
and (3) impurity detection: when a cotton sliver is fed into the carding chamber through the cotton sliver feeding channel, impurity information of the cotton sliver is detected by an impurity detector arranged in the cotton sliver feeding channel, and a detection result is sent to the air injection control device, wherein the impurity information comprises information of an area where the impurity is located;
self-adaptive impurity gas injection: when the cotton sliver fed into the carding cavity is carded by the carding roller, the air injection control device controls the air injection holes corresponding to the region where the impurities are located on the carding roller to inject air according to the detection result so as to improve the cotton sliver looseness of the region where the impurities are located, so that the impurities are separated from the effective fibers;
impurity removing and carding: the air injection step and the self-adaptive impurity injection step are carried out simultaneously, when the cotton sliver is combed by the carding roller, the air is supplied to the carding cavity through the air supply channel, and the impurities or part of the impurities fall into the impurity discharge belt through the impurity discharge area of the carding cavity and are discharged under the action of self gravity.
2. The method of claim 1, wherein: the air injection holes in the carding roller are divided into a plurality of areas, each area is provided with one or more air injection holes, and the air injection control device can control the air injection area and/or the air injection amount of the carding roller according to the detection result.
3. The method of claim 2, wherein: the impurity detector comprises a camera, an image recognition unit and an impurity evaluation unit, the impurity information of the cotton sliver is detected by the following steps,
shooting image data of the cotton sliver in the cotton sliver feeding channel through a camera, and transmitting the cotton sliver image data to an image identification unit;
the image identification unit identifies cotton sliver image data, acquires impurity distribution information and impurity type information in the cotton sliver, and sends the impurity distribution information and the impurity type information to the impurity evaluation unit;
according to the impurity distribution information and the impurity type information, the impurity evaluation unit evaluates the cotton sliver impurity grade based on a preset evaluation model, marks an impurity key area, and sends the evaluation grade and the marked area information to the air injection control device.
4. The method of claim 3, wherein: in the impurity self-adaptive air injection step, the air injection control device can control the air injection holes of the corresponding area on the carding roller to inject air according to the mark area information, and selects the air injection amount corresponding to the evaluation grade according to the evaluation grade.
5. The method of claim 4, wherein: impurity stripping surfaces which are obliquely arranged downwards are arranged corresponding to the impurity discharging areas of the carding cavity, and impurity absorbing openings are formed in the impurity stripping surfaces to absorb impurities;
when impurities are discharged, an impurity stripping channel which is inclined downwards is formed at the lower part of the carding roller through the impurity stripping surface, the impurity stripping channel comprises an effective fiber area, a turning reverse suction area and a free impurity falling area from top to bottom, the impurities in the turning reverse suction area are sucked into the impurity suction channel through the impurity suction port and discharged, and the impurities in the free impurity falling area freely fall into the impurity discharge belt and are discharged.
6. The method of claim 5, wherein: the suction air pressure of the gettering channel is adjustable, and under the condition that the air injection amount is increased by the air injection control device, the suction air pressure of the gettering channel is increased so as to increase the negative pressure suction force of the gettering port on the impurities in the turning and reverse suction area.
7. The method of claim 6, wherein: the impurity stripping surface and the horizontal plane are obliquely arranged downwards at an angle of 60-70 degrees.
8. The utility model provides an impurity self-adaptation's rotor type open-end spinning machine arranges miscellaneous carding unit, is including the carding chamber of installing the carding roller, the channel and fibre transfer passage are fed to carding chamber intercommunication cotton sliver, correspond carding chamber below and be equipped with tonifying qi passageway and the miscellaneous district of row of carding chamber, its characterized in that:
a plurality of air injection holes are arranged on the surface of the carding roller in an array mode and are connected with an air injection control device; the impurity detector is arranged corresponding to the cotton sliver feeding channel and is connected with the air injection control device;
the impurity detector is configured to detect impurity information of the cotton sliver and send a detection result to the air injection control device when the cotton sliver is fed into the carding cavity through the cotton sliver feeding channel, wherein the impurity information comprises information of an area where the impurity is located;
the air injection control device is used for triggering the air injection of the air injection holes aiming at the region where the impurities are located, and is configured to control the air injection holes corresponding to the region where the impurities are located on the carding roller to inject air according to a detection result so as to improve the looseness of the cotton sliver in the region where the impurities are located when the cotton sliver fed into the carding chamber is carded by the carding roller, so that the impurities are separated from the effective fibers;
the air supply channel is used for supplying air to the carding cavity when the carding roller combs the cotton sliver, and impurities or partial impurities fall into the impurity discharge belt through the impurity discharge area of the carding cavity and are discharged under the action of self gravity.
9. The apparatus of claim 8, wherein: the impurity detector comprises a camera, an image recognition unit and an impurity evaluation unit;
the camera is used for shooting image data of cotton slivers in the cotton sliver feeding channel and transmitting the image data to the image recognition unit; the image identification unit is used for identifying and analyzing the cotton sliver image data to acquire impurity distribution information and impurity type information in the cotton sliver and then sending the impurity distribution information and the impurity type information to the impurity evaluation unit; the impurity evaluation unit is used for evaluating the cotton sliver impurity grade and marking an impurity key area according to the impurity distribution information and the impurity type information and sending the evaluation grade and the marking area information to the air injection control device;
the air injection control device can control the air injection holes of the corresponding area on the carding roller to inject air according to the marking area information, and selects the air injection amount corresponding to the evaluation grade according to the evaluation grade.
10. The apparatus of claim 8 or 9, wherein: impurity stripping surfaces which are obliquely arranged downwards are arranged corresponding to the impurity discharging areas of the carding cavity, and impurity absorbing openings are formed in the impurity stripping surfaces to absorb impurities; an impurity stripping channel which inclines downwards is formed at the lower part of the carding roller through the impurity stripping surface, the impurity stripping channel comprises an effective fiber area, a turning back suction area and a free impurity falling area from top to bottom, impurities in the turning back suction area are sucked into the impurity suction channel through the impurity suction port and discharged, and impurities in the free impurity falling area freely fall into the impurity discharge belt and are discharged.
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