System for setting a plurality of cleaning points by sensor detection and method thereof
By installing sensors at the cleaning points of the fiber preparation equipment and analyzing the data, the parameters were identified and adjusted, which solved the problem of reduced fiber treatment effect caused by excessive running time at the cleaning points, and improved the cleaning level and fiber quality.
Patent Information
- Application Number
- CN202480045710.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-06-06
- Filing Date
- 2024-05-15
- Publication Date
- 2026-01-30
AI Technical Summary
In fiber preparation equipment, excessively long operating time at cleaning points leads to reduced fiber material processing efficiency and an increased proportion of good fibers. Existing technologies make it difficult to effectively monitor and adjust the cleaning level.
By installing sensors at multiple cleaning points in the fiber preparation equipment, sensor data is collected and analyzed to identify parameters that need to be adjusted to maintain or improve the level of cleanliness. Cameras or microwave sensors are used to detect dirt particles in the fibers and work with the evaluation unit to perform statistical analysis and machine learning to optimize the cleaning process.
It enables dynamic monitoring and parameter adjustment of cleaning points, improves fiber cleanliness, reduces the proportion of good fibers mixed in, and optimizes the overall cleaning effect of fiber preparation equipment.
Smart Images
Figure CN121443784A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The invention relates to a method for setting a plurality of cleaning points by sensor detection. BACKGROUND
[0002] In a fiber preparation plant of a spinning mill, supplied fibers or fiber clusters are prepared for use in a spinning machine. In the fiber preparation plant, the fibers to be prepared for spinning are passed through a plurality of treatment stages. In a first stage, the fibers are peeled off from fiber bales in the form of fiber clusters. For this purpose, so-called bale openers are usually used. These fiber clusters are removed from the bale opener by means of pneumatic fiber cluster conveyors and are transferred, for example, to a downstream cleaning machine. In further stages, the fiber preparation plant also has a series of cleaning machines through which the fibers or fiber clusters are passed. The sequence and design of the cleaning machines are adapted to the fibers to be processed and serve to clean the fiber clusters, mix the fiber clusters and separate the fiber clusters into individual fibers and arrange them in a straight line. The individual cleaning machines in the fiber preparation plant can be arranged differently, depending, inter alia, on the raw material to be processed and the product to be obtained.
[0003] The cleaning machines used are, for example, primary cleaners, secondary cleaners, foreign matter separators and carding machines or cotton gins. Other types of machines, such as storage machines or mixers, can also be equipped with cleaning modules, which are also to be included in the cleaning machines. The individual points in the machines are accordingly referred to as cleaning points, at which waste from the cleaning process, so-called treated fibers, is produced. Thus, a single cleaning machine can have a plurality of cleaning points, for example, the treated fibers of a lickerin can be removed separately from the treated fibers of a rotating flat unit in a carding machine. Conversely, however, the treated fibers produced at different points in the machine can also be combined within the machine.
[0004] In the cleaning machines or cleaning points themselves, so-called treated fibers are produced, which include dirt particles, foreign matter, seed parts or stem parts, dust particles or neps or fiber nubs (known as slubs) separated from the fibers or fiber clusters in the cleaning process. Due to the design of the cleaning points, good fibers, i.e. fibers that can actually be processed in the subsequent spinning mill, are also mixed into the treated fibers. The proportion of good fibers in the treated fibers of a cleaning point should be kept as low as possible. However, due to the cleaning of the fiber material, it is not possible to completely avoid separating good fibers from the fiber material, which become part of the treated fibers. The higher the degree of washing of the fiber material, the higher the proportion of good fibers in the treated fibers.
[0005] After a certain operating time, the cleaning points can become misaligned and the treatment effect of the fiber material can decrease. The fiber clusters from the fiber bales can also contain a higher proportion of dirt particles and the setting of the cleaning points can be counterproductive. SUMMARY
[0006] It is an object of the present invention to provide a method and a system which enable a centralized detection of treated fibers, thereby optimizing the operation of the entire fiber production plant and of the individual cleaning points.
[0007] This object is fully or partially achieved by the features of the present invention. In order to achieve this object, a method for setting up a plurality of cleaning points by sensor detection of treated fibers in a fiber production plant is proposed. Each cleaning point has a sensor connected to an evaluation unit. The method comprises:
[0008] - detecting fibers treated by the cleaning points using the sensors;
[0009] - collecting all sensor data from each cleaning point and treated fibers; and
[0010] - identifying at least one parameter of at least one of the plurality of cleaning points to be adjusted.
[0011] Advantageously, the method can identify at least one cleaning point or parameter of the plurality of cleaning points in order to maintain or improve the cleaning level.
[0012] According to one embodiment, the detecting comprises a timestamp.
[0013] The timestamp allows the method to categorize the sensor data.
[0014] According to one embodiment, the collecting comprises an analysis of the collected sensor data.
[0015] Advantageously, the method can analyze the collected sensor data.
[0016] According to one embodiment, the analysis comprises a comparison of at least two collected sensor data points from the detecting and / or at least two collected sensor data points from at least two cleaning points.
[0017] The comparison allows the method to detect changes.
[0018] According to one embodiment, the analysis comprises a detection of an amount of dirt particles in the fibers treated by the cleaning points.
[0019] The detection allows the method to identify when the cleaning level exceeds a predetermined threshold.
[0020] According to one embodiment, the identifying comprises a statistical analysis, machine learning and / or modeling.
[0021] Advantageously, the method can identify which parameter of which machine needs to be adjusted.
[0022] According to an embodiment, this comprises determining at least one parameter value of at least one cleaning point.
[0023] This determination allows a parameter value to be assigned.
[0024] According to an embodiment, the method comprises setting at least one cleaning point of the plurality of cleaning points to change the cleaning level.
[0025] This setting allows at least one cleaning point of the plurality of cleaning points to be set to maintain or improve the cleaning level.
[0026] According to an embodiment, the method comprises verifying the change in cleaning level after the setting by detection.
[0027] This verification confirms whether the identified parameter is correct.
[0028] This object is fully or partially achieved by the features of the application. In order to achieve this object, a system for setting a plurality of cleaning points is proposed. The method comprises:
[0029] - a plurality of cleaning points, each cleaning point having a sensor; wherein the sensor is configured to detect fibres treated by the cleaning point; and
[0030] - an evaluation unit connected to the sensor; wherein the evaluation unit is configured to collect all data and parameters of each cleaning point and to identify at least one parameter of at least one cleaning point to be adjusted.
[0031] Advantageously, the system can identify at least one cleaning point, or parameter, of the plurality of cleaning points in order to maintain or improve the cleaning level.
[0032] According to an embodiment, the system comprises a setting device configured for setting at least one parameter of at least one cleaning point to change the cleaning level.
[0033] The system allows at least one cleaning point of the plurality of cleaning points to be set to maintain or improve the cleaning level.
[0034] According to an embodiment, the sensor is a camera or a microwave sensor. BRIEF DESCRIPTION OF DRAWINGS
[0035] The above and other objects, features, aspects and advantages of the present application will become more apparent from the following detailed description of the embodiments, when taken in conjunction with the accompanying drawings, which illustrate by way of example, non-limiting embodiments thereof. In the drawings: Figure 1 is a schematic view of a fibre preparation plant having a system 100 and a method according to the present application.
[0036] In the following description of the illustrated embodiments, like -referenced numerals are used to designate identical and / or at least similar features in terms of their design and / or mode of operation, even if they are shown in different embodiments. Unless detailed otherwise, their design and / or mode of operation corresponds to the design and mode of operation of the features already described above.
[0037] Description of embodiments
[0038] In the fiber preparation equipment of a spinning mill, the supplied fibers or fiber clusters are prepared for use in the spinning machine. The degree of contamination of the fibers can vary significantly from one delivery to another. It is not easy to distinguish when the degree of contamination is high and when the cleaning machine settings change over time.
[0039] The present invention proposes a system 100 which sets at least one cleaning point 190 of a plurality of cleaning points 190 to maintain or improve the cleaning level.
[0040] To this end, the system 100 comprises sensors 110, cameras 112 or microwave sensors 111, a plurality of cleaning points 190 and an evaluation unit 120.
[0041] The plurality of cleaning points 190 can for example comprise bale openers, carding machines 193 or cotton gins, storage machines or mixers. According to an embodiment, each cleaning point 190 can have a sensor 110. Depending on the application, the sensor 110 can be a camera 112 or a microwave sensor 111 and can be aimed at the ginning machine and / or the outlet and monitor the fibers treated by the cleaning point 190. The detection of the fibers treated by the cleaning point 190 or the sensor data of the fibers treated by the cleaning point 190 can comprise a timestamp so that the sensor data can be sorted.
[0042] The sensor 110 can also be mounted on the bale opener and attached to the removal arm. When the removal tower passes over the bale, the height of the removal arm is set so that the upper layer of fiber material is removed from the bale by the removal element. The removed fiber material can be monitored by the sensor 110 or camera 112 in the collection channel and the camera 112 can take a photo of it and timestamp it. The camera 112 can also be mounted on the side of the removal element, allowing the upper layer of fiber material to be monitored. In both cases, the camera 112 arranged above the bale and with its optical axis aligned with the surface of the bale can examine the fiber material. Advantageously, the camera 112 mounted on the bale opener can monitor whether the fiber clusters from the bale contain a high proportion of soiled particles.
[0043] In the shown fiber preparation apparatus, the treated fibers or fiber clusters can be transported via a fiber feeder 198 into a primary cleaner 191. For example, a sensor 110 can be attached to the fiber feeder 198 to monitor the incoming fibers. The fibers are passed from the primary cleaner 191 via a transport line 197 to a secondary cleaner 192 and from said secondary cleaner via another transport line 197 to a carding machine 193. During the transport, a camera 112 or a microwave sensor 111 can monitor or detect the transported fibers.
[0044] In the shown embodiment, a cleaning point 190 is provided on the primary cleaner 191 and the secondary cleaner 192, respectively. In the carding machine 193, the fibers are introduced via a filling chute, then roughly processed in a lickerin roll 194 and transferred to a drum 195. At the circumference of the drum 195, the fibers are further processed, aligned in parallel and then via a doffer enter a sliver forming unit, by which the fibers are formed into a sliver 199. Thus, the sliver 199 leaves the carding machine 193 and is stored in a storage device in a sliver can (not shown). The sliver can serves as a stock machine for the fiber material leaving the carding machine 193 in the form of a sliver 990. Above the sliver can a camera 112 can be arranged, the optical axis of which is aligned to the surface of the sliver 199 located in the sliver can. It is also possible to align the camera 110 to a sliver can which has been filled and removed from the storage device.
[0045] The cleaning points 190 are connected to the transport lines 197, respectively, for removing the treated fibers generated at the cleaning points 190. The cleaning point 190 of the primary cleaner 191 is connected to the transport line 197 via a connection 196. The camera 110 or the microwave sensor 111 can be aligned to the treated fibers at the connection 196. Additionally or alternatively, a camera can also be mounted on the carding machine or cleaner shaft, for example.
[0046] Furthermore, the cleaning point 190 of the secondary cleaner 192 is connected to the transport line 197 via a connection 196. The sensor 110 can also be mounted on the connection 196 to monitor the treated fibers.
[0047] Furthermore, the cleaning point 190 of the lickerin roll 194 of the carding machine 193 is connected to the transport line 197 via a connection 196. Furthermore, the cleaning point 190 of the drum 195 of the carding machine 193 is connected to the transport line 197 via a connection 196. The camera 111 or the microwave sensor 111 can be mounted on the connection 196 of the carding machine 193 and monitor the treated fibers.
[0048] The transport line 197 is connected to the central container 189 and has an air inlet opening at its end opposite the central container 189. The central container 189 comprises a transport air separator and waste 188 towards the interior of the central container 189.
[0049] The transport line 197 is connected to a negative pressure source, in the illustrated embodiment a fan, via the central container 189. The waste from the individual cleaning points 190 is sucked into the central container 189 via the transport line 197 and optically detected by the camera 110.
[0050] The camera 112 and the microwave sensor 111 are connected to the evaluation unit 120. After the microwave sensor 111 or the camera 110 has detected data, the evaluation unit 120 can collect all sensor data from each cleaning point 190 and analyze the treated fibers. Based on this sensor data, the evaluation unit 120 can determine the amount of dirt particles in the fibers treated by the cleaning point 190. In particular, the method can detect when the cleaning level exceeds a predetermined threshold.
[0051] By comparing at least two collected sensor data points from the initial data collection and / or at least two collected sensor data points from at least two cleaning points 190, the analysis can determine whether the amount of dirt particles has changed over time and the method can detect these changes. The detection of such changes can lead to the identification of at least one parameter to be adjusted at at least one of the plurality of cleaning points 190.
[0052] Once at least one parameter to be adjusted has been identified, at least one parameter value from at least one cleaning point 190 can be determined. To change the cleaning level, the parameter value can be specified by this determination. Depending on the specific case, the method can determine one or more parameter values for one or more machines. To maintain or improve the cleaning level, the method can make settings to at least one of the plurality of cleaning points 190.
[0053] For example, the speed of the bale opener and / or the rotational speed of the removal arm can be reduced. It is also possible that the removal elements do not penetrate as deeply into the upper layer. The result of this setting can be monitored by the sensors 110 and sent to the evaluation unit 120 together with a time stamp.
[0054] The method can also identify that settings to the primary cleaner 191 and the secondary cleaner 192 are required. The method will change the speed and / or the grate / blade position. If the sensors 110 detect that the cleaning level has deteriorated, the evaluation unit 120 can identify that the parameters to be adjusted are incorrect. This identification can provide data for statistical analysis, machine learning and / or modeling to improve the method.
[0055] For the carding machine 193, the setting can be, for example, the speed of the cylinder 195 or the taker-in 194, or the minimum carding gap or setting the separating blades, and the sensor 110 arranged above the canister can monitor the change in the level of cleanliness.
[0056] As mentioned above, the cleaning point 190 is connected to a transport line 197 for removing waste material produced at the cleaning point 190. The cleaning point 190 is connected to the transport line 197 via a connection 196, and the method can monitor the waste material produced at the cleaning point 190 and identify appropriate parameters to maintain or improve the level of cleanliness.
[0057] In Figure 1 the transport line 197 is connected to a central container 189, which comprises waste material 188 directed inside the central container 189. One advantage of the waste material 188 in the central container 189 is that it is possible to take the settings into account in a comprehensive manner. Although adjustments are made to individual machines, the differences between each machine can be minimal, but quite significant for the entire system.
Claims
1. A method for setting a plurality of cleaning points (190) by sensor (110) detection of treated fibers in a fiber preparation device, each cleaning point (190) having a sensor (110) connected to an evaluation unit (120), the method comprising: - detecting fibers treated by the cleaning point (190) using the sensor (110); - collecting all sensor data from each cleaning point (190) and treated fibers; and - identifying at least one parameter of at least one cleaning point (190) of the plurality of cleaning points (190) to be adjusted.
2. The method according to claim 1, wherein the detecting comprises a time stamp.
3. The method according to claim 1 or claim 2, wherein the collecting comprises an analysis of the collected sensor data.
4. The method according to claim 3, wherein the analysis comprises comparing at least two collected sensor data points from the detecting and / or at least two collected sensor data points from at least two cleaning points (190).
5. The method according to claim 1 or claim 4, wherein the analysis comprises detecting an amount of dirt particles in the fibers treated by the cleaning point (190).
6. The method according to any one of claims 1 to 6, wherein the identifying comprises a statistical analysis, machine learning and / or modeling.
7. The method according to claim 6, the method comprising determining at least one parameter value of at least one cleaning point (190).
8. The method according to any one of claims 1 to 7, the method comprising setting at least one cleaning point (190) of the plurality of cleaning points (190) to change a cleaning level.
9. The method according to claim 8, the method comprising verifying the change of the cleaning level after the setting by detecting.
10. A system (100) for setting a plurality of cleaning points (190), the system comprising: - a plurality of cleaning points (190), each cleaning point (190) having a sensor (110); wherein the sensor (110) is configured to detect fibers treated by the cleaning point (190); and - an evaluation unit (120) connected to the sensor (110); wherein the evaluation unit (120) is configured to collect all data and parameters of each cleaning point (190) and to identify at least one parameter of at least one cleaning point (190) to be adjusted.
11. The system (100) according to claim 10, the system comprising a setting device configured for setting at least one parameter of at least one cleaning point (190) to change the cleaning level.
12. The system (100) according to claim 10 or claim 12, wherein the sensor (110) is a camera or a microwave sensor (110).