Integrated automatic dosing feeder unit and method

Abstract

The application is suitable for the technical field of quantitative batching feeding, and provides an integrated automatic quantitative batching feeding unit and method.The unit comprises a support, a controller for controlling the overall operation of the unit, a feeding assembly arranged on the top of the support and used for storing and conveying materials, and a blanking assembly.The device solves the problem that sticky wet materials are easily adhered to the inner wall of the hopper and are difficult to completely fall off, resulting in a deviation between the actual unloading amount and the early weighing value and the deviation being transmitted to the subsequent weighing link, thereby damaging the weighing accuracy.The device is provided with two groups of blanking assemblies and a matching hopper changing assembly for alternate operation.When the weighing accuracy is affected by the residual sticky materials of one group of blanking assemblies, the hopper changing assembly can drive the two groups of blanking assemblies to quickly displace and switch, so that the problem blanking assembly is moved out of the working position and is replaced by a clean inner hopper offline, and the other group of blanking assemblies is synchronized online to undertake the batching operation, thereby avoiding the residual materials from being transmitted to the subsequent weighing link to damage the accuracy and ensuring the continuous and stable operation of the unit.

Description

Technical Field

[0001] This invention relates to the field of quantitative feeding technology, and more specifically, to an integrated automatic quantitative feeding unit and method. Background Technology

[0002] Quantitative feeding is an indispensable key link in industrial production processes. Its core lies in accurately conveying materials according to preset weight standards, providing a stable and uniform material supply for subsequent production processes. It is widely used in many fields such as chemical, building materials, food, and pharmaceutical industries, which have strict requirements for material proportions, and is an important foundation for ensuring the standardization and efficiency of production.

[0003] The existing basic method is a single hopper intermittent weighing and discharging system. Its process logic is hopper weighing, material discharge, discharge, and then the next weighing. However, this method suffers from long production waiting times, as weighing cannot be performed simultaneously during the discharge phase, resulting in significant gaps between processes and hindering overall production efficiency. To address this pain point, those skilled in the art have proposed an improved hopper and conveyor belt combination. A conveyor belt is added below the hopper, allowing for a parallel process of hopper weighing and unloading, and continuous material discharge and bagging via the conveyor belt. After the hopper completes weighing and unloading, there is no need to wait for the bagging process to finish; the next weighing operation can begin immediately. The conveyor belt continuously supplies material to the packaging machine after receiving it, enabling the weighing and discharging processes to run concurrently, eliminating waiting gaps, and improving production efficiency.

[0004] However, this solution still has problems with viscous materials: the material adheres to the inner wall of the hopper, affecting the weighing accuracy. Viscous wet materials tend to stick to the inner wall of the hopper and are difficult to completely remove, resulting in a deviation between the actual unloading volume and the previous weighing value. This deviation will be directly transmitted to the next weighing stage, compromising the weighing accuracy. Even if the hopper is cleaned online, the cleaning process will have uncertainties, which will greatly reduce the actual application effect of the improved solution. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an integrated automatic quantitative feeding unit and method.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an integrated automatic quantitative feeding unit, including a support frame.

[0007] The controller is used to control the overall operation of the unit.

[0008] The feeding assembly, located at the top of the support frame, is used for material storage and conveying.

[0009] The material feeding assembly consists of two sets, which are used for weighing and are used alternately.

[0010] The bucket changing assembly drives two sets of material dropping components to move. The bucket changing assembly includes a frame connected to a support and two sets of electric slide rails installed on the side wall of the frame. Each set of electric slide rails has a sliding table on its side wall. Two switching cylinders are installed on the side wall of the sliding table. The two sets of switching cylinders correspond to the two sets of material dropping components. The piston rod end of the switching cylinder is provided with an insert plate, which is inserted into the corresponding material dropping component.

[0011] Two crossbeams are installed inside the carrier frame, and a weighing sensor is installed on the top of each of the two crossbeams. The weighing sensor is used to weigh the material unloading assembly, and the weighing sensor is electrically connected to the controller.

[0012] The present invention is further configured such that: the feeding assembly includes a frame installed on the top of the support and a hopper installed on the top of the frame; a feeding motor and a feeding pipe are installed on the top of the support and below the frame; the outer wall of the feeding pipe is connected to the bottom of the hopper; the output end of the feeding motor extends into the interior of the feeding pipe and is connected to an auger; a discharge port is provided on the top of the support; and the end of the feeding pipe extends above the discharge port.

[0013] The present invention is further configured such that: an online cleaning component is installed on one side of the frame, the online cleaning component removes some residue inside the material discharge component, the online cleaning component includes two lifting cylinders symmetrically installed on the side wall of the frame, the piston rods of the two lifting cylinders are connected to a carrier plate, the carrier plate is slidably connected to the inside of the frame, a drive motor is installed on the top of the carrier plate, the output end of the drive motor is connected to a rotating shaft, the outer side wall of the rotating shaft is connected to a sleeve, the side wall of the sleeve is connected to a connecting plate, and a scraper is provided on one side of the connecting plate.

[0014] The invention is further configured such that: a square tube is sleeved on the outside of the connecting plate; the scraper is hinged to the side of the square tube away from the connecting plate; an electric push rod is installed on the side of the connecting plate near the square tube; the output end of the electric push rod is connected to the inner wall of the square tube; a plate body is connected to one side of the square tube; the side wall of the plate body is connected to one side of the scraper; a spring plate is connected to the other side of the square tube; the spring plate is connected to the other side of the scraper; and the scraper is initially tilted towards the side closer to the spring plate.

[0015] The present invention is further configured such that: two sets of the material discharge components are used for quantitative storage and discharge of materials, and both sets of the material discharge components include an outer hopper, both sides of the outer hopper are connected to positioning tubes, the insert plate is inserted into the corresponding positioning tube, and a U-shaped frame is installed on the side wall of each outer hopper, and both ends of the U-shaped frame are hinged to baffles, the baffles being used to block the bottom opening of the corresponding outer hopper.

[0016] The present invention is further configured such that: an inner hopper is provided inside the outer hopper, and the inner cavity of the inner hopper is circular.

[0017] The present invention is further configured such that: an adjusting cylinder is installed on the side wall of each outer bucket, and two rocker arms are hinged to the piston rod end of the adjusting cylinder. The two rocker arms are correspondingly arranged with two baffles, and the ends of the rocker arms are hinged to the side walls of the corresponding baffles.

[0018] The present invention is further configured such that: a drive cylinder is horizontally mounted at the piston rod end of each switching cylinder, and the piston rod end of the drive cylinder is connected to the insert plate.

[0019] The quantitative feeding method, based on the integrated automatic quantitative feeding unit described above, includes the following steps:

[0020] S1. Under the control of the controller, the two sets of material feeding components are driven to move through the bucket changing component. The two sets of material feeding components are divided into the first set of material feeding components and the second set of material feeding components. First, the first set of material feeding components is transferred to the bottom of the material feeding port on the top of the support. The material is poured into the inside of the feeding component and quantitatively conveyed into the inside of the first set of material feeding components. The material is quantitatively weighed by the corresponding weighing sensor and the measured data is transmitted to the controller. Then, the weighed material is released and discharged.

[0021] S2. After completing one weighing, the feeding assembly, the dropping assembly and the weighing sensor (8) work together to complete the feeding, weighing and discharge processes.

[0022] S3. During the weighing process, the controller determines the current weighing status of the first set of material feeding components by combining the weight parameters collected by the weighing sensor. The weighing status of the material feeding components is divided into normal weighing status and abnormal weighing status.

[0023] S4. Cleaning mode under normal weighing conditions: Under normal weighing conditions, the online cleaning component is used to complete an online basic cleaning during the time interval. That is, the online cleaning component performs a basic cleaning during the time interval between the previous material discharge component discharging material and the next material feeding component.

[0024] S5, Cleaning mode for abnormal weighing conditions: When the material feeding component is determined to be in an abnormal weighing state, the controller controls the online cleaning component to perform online deep cleaning.

[0025] S6. If the weighing abnormality occurs three times in a row, the two sets of material feeding components will be alternated using the bucket changing component. The material feeding component with the weighing abnormality will be processed offline. After the second set of material feeding components enters the production line, the entire unit will be restored to the normal weighing state. The feeding component, material feeding component and weighing sensor will work together to continue the feeding, weighing and discharge processes.

[0026] In step S2, the weighing abnormality is divided into three types, specifically including condition a, mild residue abnormality; condition b, moderate stubborn residue abnormality; and condition c, severe residue out-of-control abnormality. The controller presets an incremental residue threshold, using the weight of the residual material detected by the weighing sensor after the material feeding component completes one discharge as the judgment criterion.

[0027] Condition a, the criteria for determining the abnormal state of slight residue is: the weight of the residual material after the material feeding component completes one discharge exceeds the threshold of slight residue but is within the threshold of moderate residue.

[0028] Condition b, the criteria for determining the abnormal state of moderate stubborn residue, is: the weight of the residual material after the material feeding component completes one discharge exceeds the moderate residue threshold but is within the heavy residue threshold.

[0029] Condition c, the criteria for determining the severe residue out-of-control abnormal state, is: the weight of the residual material after the material feeding component completes one discharge exceeds the severe residue threshold.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] (1) By setting up two sets of alternating material feeding components and corresponding bucket changing components, when the weighing accuracy of one set of material feeding components is affected by the residue of sticky material, the bucket changing component can drive the displacement switching of the two sets of material feeding components, move the problematic material feeding component out of the working position and replace the clean inner layer bucket offline, and the other set of material feeding components simultaneously go online to take over the batching operation, thus achieving the effect of avoiding the transmission of residual material to the next weighing stage and ensuring the batching accuracy.

[0032] (2) By setting up an adjustable scraper with electric push rod, square tube, spring plate and graded cleaning control mechanism, the scraper action mode is adjusted according to the material residue level. For moderate residue, the scraper shovel is used to strengthen the cleaning method. Only when the residue is heavy, the bucket changing process is started, which achieves the effect of targeted treatment of different levels of material residue, reducing the frequency of bucket changing and improving the unit's operating efficiency.

[0033] (3) By setting a phased dynamic residual threshold judgment mechanism, a loose threshold set is adopted in the early stage of production to adapt to the stability fluctuations in the equipment startup stage, and a strict threshold set is switched in the middle and late stages of production to strengthen the detection of fine residuals. The timer is reset and the loose threshold is restored after deep cleaning or bucket replacement, which achieves the effect of reducing the false triggering of judgments in different production stages and improving the accuracy of residual status identification.

[0034] (4) By setting up a multi-dimensional fusion judgment mechanism of real-time residual status and historical cumulative deviation trend, and combining the residual weight data after a single discharge with the cumulative deviation value of multiple batches for comprehensive judgment, the risk of systemic accuracy drift is warned in advance, thus avoiding the limitations of single-dimensional judgment and ensuring the stability of batching accuracy during long-term continuous operation of the unit. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of an integrated automatic quantitative feeding unit according to the present invention.

[0036] Figure 2 This is a schematic diagram of the combined structure of the feeding component and the online cleaning component in this invention.

[0037] Figure 3 This is a partial top view of the online cleaning component in this invention.

[0038] Figure 4 This is a schematic diagram of the feeding assembly structure in this invention.

[0039] Figure 5 This is a schematic diagram of the combined structure of the bucket changing assembly and the material feeding assembly in this invention.

[0040] Figure 6 for Figure 5 A partial structural diagram.

[0041] Figure 7 for Figure 6 A side view structural diagram.

[0042] Figure 8 for Figure 6 A partial structural diagram.

[0043] Figure 9 This is a schematic diagram of the combined structure of the material feeding component and the online cleaning component in this invention.

[0044] Figure 10 This is a flowchart of the batching and feeding method in this invention.

[0045] Figure 11 This is a block diagram of the batching and feeding method in this invention.

[0046] Figure 12 This is a waveform diagram showing the change in residual amount in this invention.

[0047] Explanation of reference numerals in the attached diagram: 1. Bracket; 2. Controller;

[0048] 3. Feeding assembly; 31. Frame; 32. Hopper; 33. Feeding motor; 34. Feeding pipe; 35. Screwdriver;

[0049] 4. Online cleaning components; 41. Lifting cylinder; 42. Carrier plate; 43. Drive motor; 44. Rotary shaft; 45. Sleeve; 46. Connecting plate; 47. Square tube; 48. Scraper; 49. Spring plate; 401. Electric push rod; 402. Plate body;

[0050] 5. Bucket changing assembly; 51. Carrier frame; 52. Electric slide rail; 53. Slide table; 54. Insert plate; 55. Drive cylinder; 56. Switching cylinder;

[0051] 6. Material feeding assembly; 61. Outer hopper; 62. Inner hopper; 63. Positioning tube; 64. Adjusting cylinder; 65. Baffle; 66. Swing rod; 67. U-shaped frame;

[0052] 7. Crossbar; 8. Weighing sensor. Detailed Implementation

[0053] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0054] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0055] Please see Figures 1-12 The present invention provides the following technical solutions:

[0056] Example 1: An integrated automatic quantitative feeding unit includes a support frame 1, and a controller 2 is installed on one side of the support frame 1 for controlling the overall operation of the unit.

[0057] See Figure 1 and Figure 2 A feeding assembly 3 is installed on the top of the support 1. It is used for material storage and conveying. The specific structure of the feeding assembly 3 is as follows:

[0058] See Figure 1 and Figure 2 The feeding assembly 3 includes a frame 31 installed on the top of the support 1 and a hopper 32 installed on the top of the frame 31. A feeding motor 33 and a feeding pipe 34 are installed on the top of the support 1 and below the frame 31. The outer wall of the feeding pipe 34 is connected to the bottom of the hopper 32. The output end of the feeding motor 33 extends into the interior of the feeding pipe 34 and is connected to an auger 35. A discharge port is opened on the top of the support 1, and the end of the feeding pipe 34 extends above the discharge port.

[0059] The staff first adds the material that needs to be quantitatively prepared into the hopper 32. Then the controller 2 controls the feeding motor 33 to start. As the auger 35 rotates, the material is pushed out from the front end of the feeding pipe 34.

[0060] See Figure 1 and Figure 6 A material discharge assembly 6 is installed on one side of the support frame 1. The material discharge assembly 6 is used to receive the material pushed out from the front end of the feeding pipe 34. A weighing sensor 8 is installed below the material discharge assembly 6. The weighing sensor 8 is used to weigh the material discharge assembly 6. The weighing sensor 8 is electrically connected to the controller 2. When the weighed weight reaches the preset weight, the controller 2 controls the feeding assembly 3 to stop feeding and simultaneously issues a command to the material discharge assembly 6. The material discharge assembly 6 then controls the material to be discharged downwards. A conveyor belt mechanism is installed on one side of the support frame 1. The surface of the conveyor belt mechanism can be fitted with a trough as needed. The material discharge assembly 6 discharges the material into the trough of the conveyor belt mechanism. The conveyor belt mechanism continues to transport the material. At the same time, the material discharge assembly 6 stops discharging and the feeding assembly 3 starts feeding. The specific structure of the material discharge assembly 6 is as follows:

[0061] See Figure 5 The material feeding assembly 6 includes an outer hopper 61, which is located below the material feeding port at the top of the support 1 and above the weighing sensor 8. The material falls into the outer hopper 61 and is weighed in real time by the weighing sensor 8.

[0062] See Figures 5-9 Each outer hopper 61 has a U-shaped frame 67 installed on its side wall. Both ends of the U-shaped frame 67 are hinged to baffles 65. The baffles 65 are used to block the bottom opening of the corresponding outer hopper 61. Each outer hopper 61 has an adjusting cylinder 64 installed on its side wall. The piston rod end of the adjusting cylinder 64 is hinged to two rocker arms 66. The two rocker arms 66 are correspondingly set with the two baffles 65. The ends of the rocker arms 66 are hinged to the side wall of the corresponding baffle 65.

[0063] When the weighing weight reaches the preset weight, the controller 2 controls the piston rod of the adjusting cylinder 64 to extend, and the adjusting cylinder 64 pushes one end of the swing rod 66 downward. Since the other end of the swing rod 66 is hinged to the baffle 65, and the baffle 65 is hinged to the end of the U-shaped frame 67, the swing rod 66 tilts under the influence of the thrust, causing the baffle 65 to swing downward. The bottom opening of the outer hopper 61 opens, and the material in the outer hopper 61 is discharged through the bottom opening of the outer hopper 61. After the material inside the outer hopper 61 is discharged, the controller 2 controls the piston rod of the adjusting cylinder 64 to retract, and the baffle 65 continues to close the bottom opening of the outer hopper 61. Then the feeding assembly 3 can continue to feed the material.

[0064] See Figures 2-4 and Figure 9An online cleaning component 4 is installed on one side of the frame 31. The online cleaning component 4 removes some residue inside the outer hopper 61. That is, it uses the time interval between the previous material discharge component 6 discharging material and the next material discharge component 6 feeding material to perform a basic cleaning by the online cleaning component 4. The specific structure of the online cleaning component 4 is as follows:

[0065] See Figures 2-4 and Figure 9 The online cleaning component 4 includes two lifting cylinders 41 symmetrically installed on the side wall of the frame 31. The piston rods of the two lifting cylinders 41 are connected to a carrier plate 42. The carrier plate 42 is slidably connected to the inside of the frame 31. A drive motor 43 is installed on the top of the carrier plate 42. The output end of the drive motor 43 is connected to a rotating shaft 44. The outer side wall of the rotating shaft 44 is connected to a sleeve 45. The side wall of the sleeve 45 is connected to a connecting plate 46. A scraper 48 is provided on one side of the connecting plate 46.

[0066] The lifting cylinder 41 can drive the carrier plate 42 to rise and fall, while the drive motor 43, rotating shaft 44, sleeve 45, connecting plate 46 and scraper 48 rise and fall synchronously as a whole. The drive motor 43 is used to drive the rotating shaft 44 and scraper 48 to rotate. After the material discharge component 6 completes one discharge, the drive motor 43 drives the rotating shaft 44 and scraper 48 to rotate 360 ​​degrees. The scraper 48 circles around the outer hopper 61. Taking advantage of the unclosed state of the baffle 65, some of the residue in the outer hopper 61 is scraped off into the material trough of the conveyor belt mechanism. After the baffle 65 is closed, the feeding component 3 can continue to feed.

[0067] In Example 2, for non-sticky materials, the online cleaning component 4 set in Example 1 can achieve a good basic cleaning effect; however, for sticky materials, this solution still has problems: the material adheres to the inner wall of the hopper, affecting the weighing accuracy. Sticky wet material is easy to adhere to the inner wall of the hopper and is difficult to completely remove, resulting in a deviation between the actual unloading amount and the previous weighing value. This deviation will be directly transmitted to the next weighing stage, destroying the weighing accuracy. Even if the hopper is cleaned online, there will be uncertainties in the cleaning process, which will greatly reduce the actual application effect of the improved solution.

[0068] For this purpose, please refer to Figures 5-8 The material feeding component 6 is set into two sets, and the two sets of material feeding components 6 are used alternately.

[0069] In addition, a bucket changing assembly 5 is installed on the inner top wall of the support 1. Both sets of material discharge assemblies 6 are located inside the bucket changing assembly 5. The bucket changing assembly 5 drives the two sets of material discharge assemblies 6 to move, thereby replacing the residual material discharge assemblies 6, thus ensuring accurate weighing. The specific structure of the bucket changing assembly 5 is as follows:

[0070] See Figures 5-8The bucket changing assembly 5 includes a carrier frame 51 connected to the support 1 and two sets of electric slide rails 52 installed on the side wall of the carrier frame 51. Two crossbeams 7 are installed inside the carrier frame 51. There are two sets of weighing sensors 8, which are respectively installed on the top of the two crossbeams 7. Each set of electric slide rails 52 has a sliding table 53 on its side wall. The electric slide rails 52 are used to drive the sliding table 53 to move. Two switching cylinders 56 are installed on the side wall of each sliding table 53. The two switching cylinders 56 opposite each other on the two sliding tables 53 form a set. The two sets of corresponding switching cylinders 56 are set to cooperate with the corresponding outer bucket 61.

[0071] See Figures 5-8 A plate 54 is provided at the end of the piston rod of the switching cylinder 56. A drive cylinder 55 is horizontally mounted at the end of the piston rod of each switching cylinder 56. The piston rod end of the drive cylinder 55 is connected to the plate 54. Positioning tubes 63 are connected to both sides of the outer bucket 61. The plate 54 is inserted into the corresponding positioning tube 63. The switching cylinder 56 is used to push the drive cylinder 55 and the plate 54 upward. The plate 54 moves to the position of the positioning tube 63 on the side wall of the outer bucket 61, and then the drive cylinder... Cylinder 55 drives the insert plate 54 to move, causing the insert plate 54 to insert into the corresponding positioning tube 63. If the piston rod of the switching cylinder 56 extends again at this time, the corresponding outer bucket 61 will be lifted. Conversely, if the piston rod of the switching cylinder 56 retracts, the corresponding outer bucket 61 will descend under the influence of gravity, and the positioning tube 63 of the corresponding outer bucket 61 will fall on the weighing sensor 8 for weighing. During the weighing process, the insert plate 54 is transferred to the middle of the corresponding positioning tube 63 and does not contact the positioning tube 63.

[0072] In this embodiment, see Figure 5 The outer hopper 61 has an inner hopper 62 inside, and the inner cavity of the inner hopper 62 is circular. The inner hopper 62 is used to contact the material, and the inner layer of the inner hopper 62 is coated. This coating can be a Teflon coating. By setting the Teflon coating, the adhesion between the material and the inner hopper 62 can be reduced.

[0073] Specifically, the two sets of material feeding components 6 are divided into a first set of material feeding components 6 and a second set of material feeding components 6. When the first set of material feeding components 6 receives the material, the material falls into the inner hopper 62. At this time, the positioning tube 63 on the side wall of the outer hopper 61 of the first set of material feeding components 6 contacts the weighing sensor 8. The weighing sensor 8 weighs the falling material in real time and transmits the data to the controller 2. When the weight of the material reaches the preset weight, the controller 2 controls the feeding component 3 to stop feeding. At the same time, the controller 2 controls the piston rod of the adjusting cylinder 64 to extend, the two baffles 65 swing downward, the bottom opening of the outer hopper 61 opens, and the material in the outer hopper 61 is discharged through the bottom opening of the outer hopper 61. After the material in the outer hopper 61 is discharged, the controller 2 controls the piston rod of the adjusting cylinder 64 to retract, the baffles 65 continue to close the bottom opening of the outer hopper 61, and the feeding component 3 continues to feed.

[0074] During the time interval between each weighing, the weighing sensor 8 performs additional weighing on the empty first set of material feeding components 6, and transmits the data to the controller 2. The amount of residual material is determined by comparing the additional weighing data with the preset weight data.

[0075] If there is little residual material, control the online cleaning component 4 to perform a basic cleaning.

[0076] If there is a lot of residual material, the controller 2 controls the piston rod of the lifting cylinder 41 to retract, causing the carrier plate 42 to drive the drive motor 43, the rotating shaft 44, the sleeve 45, the connecting plate 46 and the scraper 48 to rise synchronously as a whole, and the scraper 48 moves out from the inside of the corresponding material dropping component 6.

[0077] Subsequently, controller 2 controls the piston rod of switching cylinder 56 of the first group of material feeding components 6 to extend, causing the first group of material feeding components 6 to be lifted away from the weighing sensor 8. Then, electric slide rail 52 drives slide table 53 to move, moving the first group of material feeding components 6 away from the feeding component 3. Meanwhile, the second group of material feeding components 6 moves synchronously to the bottom of the feeding component 3. Then, the piston rod of switching cylinder 56 corresponding to the second group of material feeding components 6 retracts, causing the positioning tube 63 in the second group of material feeding components 6 to press on the weighing sensor 8. Then, the second group of material feeding components 6 continues to perform quantitative feeding operations.

[0078] The staff only need to remove the inner hopper 62 of the first set of material discharge components 6 that has been removed, replace it with a clean inner hopper 62, and the removed inner hopper 62 can be cleaned offline and kept for later use.

[0079] However, if there is a large amount of residual material continuously, repeatedly replacing the feeding component 6 will also affect efficiency.

[0080] For this purpose, please refer to Figure 3 and Figure 9 A square tube 47 is sleeved on the outside of the connecting plate 46. A scraper 48 is hinged to the side of the square tube 47 away from the connecting plate 46. An electric push rod 401 is installed on the side of the connecting plate 46 near the square tube 47. The output end of the electric push rod 401 is connected to the inner wall of the square tube 47. One side of the square tube 47 is connected to a plate body 402. The side wall of the plate body 402 is connected to one side of the scraper 48. The other side of the square tube 47 is connected to a spring plate 49. The spring plate 49 is connected to the other side of the scraper 48. In the initial state, the scraper 48 is tilted towards the side closer to the spring plate 49.

[0081] Specifically, a graded cleaning control is set for residual materials. The first level is basic residue (some residual particles), the second level is moderate residue (a thicker film), and the third level is severe residue (some highly adhesive residual particles and a thicker film coexist). When the material residue is within the basic residue range, it is only necessary to control the scraper to rotate 720 degrees to complete the cleaning.

[0082] When the material residue exceeds the basic residue but is within the medium residue range, the controller 2 controls the electric push rod 401 to extend, causing the square tube 47 to slide on the outer wall of the connecting plate 46, causing the scraper 48 to squeeze the corresponding inner hopper 62. At the same time, because the scraper 48 is initially set to an inclined state, the scraper 48 swings through this inclination, and the scraper 48 changes from scraping to shoveling, thereby increasing the shoveling effect of the scraper 48, and thus forcibly shoveling off the medium residue material and film.

[0083] When the material residue exceeds the range of heavy residue, the bucket changing component 5 can be activated to control the first set of discharge components 6 and the second set of discharge components 6 to switch positions, thereby achieving the effect of offline cleaning by bucket changing.

[0084] Example 3, see Figure 10 and Figure 11 The quantitative feeding method, based on the aforementioned integrated automatic quantitative feeding unit, includes the following steps:

[0085] S1. Under the control of the controller 2, the two sets of material feeding components 6 are driven to move through the bucket changing component 5. The two sets of material feeding components 6 are divided into the first set of material feeding components 6 and the second set of material feeding components 6. First, the first set of material feeding components 6 is transferred to the bottom of the material feeding port of the support 1. The material is poured into the inside of the feeding component 3 and quantitatively conveyed into the inside of the first set of material feeding components 6. The material is quantitatively weighed by the corresponding weighing sensor 8 and the measured data is transmitted to the controller 2. Then, the weighed material is released and discharged.

[0086] The more specific steps in S1 are as follows:

[0087] S11. Under the control of the controller 2, the two sets of material dropping components 6 are driven to move through the bucket changing component 5. The two sets of material dropping components 6 are divided into the first set of material dropping components 6 and the second set of material dropping components 6. First, the electric slide rail 52 drives the slide table 53 to move, moving the first set of material dropping components 6 below the feeding component 3. That is, the first set of material dropping components 6 is transferred to the bottom of the material dropping port of the support 1. Then, the piston rod of the switching cylinder 56 corresponding to the first set of material dropping components 6 retracts, causing the positioning tube 63 in the first set of material dropping components 6 to press on the weighing sensor 8.

[0088] S12. Then, the staff adds the material that needs to be quantitatively prepared into the hopper 32. Then, the controller 2 controls the feeding motor 33 to start. As the auger 35 rotates, the material is pushed out from the front end of the feeding pipe 34 and falls into the inner hopper 62 of the first set of material dropping components 6. The material is quantitatively weighed by the corresponding weighing sensor 8 and the measured data is transmitted to the controller 2.

[0089] S13. When the weighing weight reaches the preset weight, the controller 2 controls the piston rod of the adjusting cylinder 64 to extend, and the adjusting cylinder 64 pushes one end of the swing rod 66 to move down. Since the other end of the swing rod 66 is hinged to the baffle 65, and the baffle 65 is hinged to the end of the U-shaped frame 67, the swing rod 66 is tilted due to the thrust, causing the baffle 65 to swing down. The bottom opening of the outer hopper 61 opens, and the material in the outer hopper 61 is discharged through the bottom opening of the outer hopper 61. After the material inside the outer hopper 61 is discharged, the controller 2 controls the piston rod of the adjusting cylinder 64 to retract, and the baffle 65 continues to close the bottom opening of the outer hopper 61.

[0090] S2. After one weighing is completed, the feeding assembly 3, the first set of dropping assembly 6 and the weighing sensor 8 work together to complete the feeding, weighing and discharge process.

[0091] The more specific steps of S2 are as follows:

[0092] S21. After one weighing is completed, the feeding assembly 3, the first set of dropping assembly 6 and the weighing sensor 8 work together to complete the feeding, weighing and discharge process. A conveyor belt mechanism is set on one side of the bracket 1, and the dropped material is sent out through the conveyor belt mechanism.

[0093] S3. During the weighing process, the controller 2 uses the weight parameters collected by the weighing sensor 8 to determine the current weighing status of the first group of material feeding components 6. The weighing status of the material feeding components 6 is divided into normal weighing status and abnormal weighing status.

[0094] The specific criteria for determining abnormal weighing conditions are as follows:

[0095] The weighing abnormalities specifically include: a) mild residue abnormality; b) moderate stubborn residue abnormality; and c) severe residue out-of-control abnormality. The controller 2 presets progressive residue thresholds (mild residue threshold < moderate residue threshold < severe residue threshold), using the weight of the residual material detected by the weighing sensor 8 after the feeding component 6 completes one discharge as the judgment criterion.

[0096] Condition a, the criteria for determining the abnormal state of slight residue is: the weight of the residual material after the material feeding component 6 completes one discharge exceeds the threshold of slight residue but is within the threshold of moderate residue.

[0097] Condition b, the criteria for determining the abnormal state of moderate stubborn residue is: the weight of the residual material after the material feeding component 6 completes one discharge exceeds the moderate residue threshold but is within the heavy residue threshold.

[0098] Condition c, the judgment condition for the severe residue out-of-control abnormal state is: the weight of the residual material after the material feeding component 6 completes one discharge exceeds the severe residue threshold.

[0099] Among them, the threshold for mild residue abnormality corresponds to the first level of basic residue (some residual particles), the threshold for moderate residue abnormality corresponds to the second level of moderate residue (thicker film), and the threshold for severe residue out-of-control abnormality corresponds to the third level of severe residue (coexistence of some highly adhesive residual particles and thicker film).

[0100] The more specific steps for S3 are as follows:

[0101] S31. Weighing data acquisition: After each discharge of material by the material discharge component 6, the controller 2 reads the value of the weighing sensor 8.

[0102] S32. Weighing anomaly determination: Based on the reading of the value of the weighing sensor 8, compare it with the threshold values ​​for slight residue, moderate residue, and heavy residue.

[0103] The methods for comparing residual thresholds and determining weighing anomalies are as follows:

[0104] Step 1: If the residual weight is greater than or equal to the light residue threshold and less than the moderate residue threshold, it is determined to be a light residue abnormal state, i.e., condition a.

[0105] Step 2: If the residual weight is greater than or equal to the moderate residue threshold and less than the severe residue threshold, it is determined to be an abnormal state of moderate stubborn residue, condition b.

[0106] Step 3: If the residual weight exceeds the heavy residue threshold, it is determined to be a state of severe residue out-of-control abnormality (condition c).

[0107] S4. Cleaning mode under normal weighing conditions: Under normal weighing conditions, the online cleaning component 4 completes a 360-degree online basic cleaning by utilizing the time interval. That is, the online cleaning component 4 performs a basic cleaning by utilizing the time interval between the previous material discharge component 6 discharging material and the next material discharge component 6 feeding material.

[0108] The more specific steps for S4 are as follows:

[0109] S41, the controller 2 sends a command to the drive motor 43, the drive motor 43 drives the rotating shaft 44 and scraper 48 to rotate 360 ​​degrees, the scraper 48 circles 360 degrees along the inner wall of the inner hopper 62, and takes advantage of the fact that the baffle 65 is not yet closed, to scrape off some of the residue in the outer hopper 61. After the baffle 65 is closed, the feeding assembly 3 can continue to feed.

[0110] S5, Cleaning mode for abnormal weighing conditions: When the material feeding component 6 is determined to be in an abnormal weighing state, the controller 2 controls the online cleaning component 4 to perform online deep cleaning.

[0111] The more specific steps for S5 are as follows:

[0112] S51. When the data from the weighing sensor 8 read by the controller 2 is in state a, the controller 2 sends a command to the drive motor 43. The drive motor 43 drives the rotating shaft 44 and the scraper 48 to rotate 720 degrees. The scraper 48 circles 720 degrees along the inner wall of the inner hopper 62. Taking advantage of the fact that the baffle 65 is not yet closed, it scrapes off some of the residue in the outer hopper 61. After the baffle 65 is closed, the feeding assembly 3 continues to feed.

[0113] S52. When the data from the weighing sensor 8 read by the controller 2 is in state b, the controller 2 controls the electric push rod 401 to extend, causing the square tube 47 to slide on the outer wall of the connecting plate 46, causing the scraper 48 to squeeze the corresponding inner bucket 62. At the same time, because the scraper 48 is initially set to an inclined state, the scraper 48 swings through this inclination, and the scraper 48 changes from scraping to shoveling, thereby increasing the shoveling effect of the scraper 48, and thus forcibly shoveling off the moderately residual material and film.

[0114] S6. If the same material feeding component 6 is judged as condition c three times in a row, the bucket changing process is started. The bucket changing component 5 is used to alternate the positions of the two sets of material feeding components 6, so that the material feeding component 6 with condition c is processed offline. After the second set of material feeding components 6 enters the production line, the entire unit is restored to the normal weighing state. For the first two conditions c, the process is carried out in step S52.

[0115] The more specific steps for S6 are as follows:

[0116] S61. When the data from the weighing sensor 8 read by the controller 2 is in state c for three consecutive times, the bucket changing component 5 can be started to control the first set of material dropping components 6 and the second set of material dropping components 6 to switch positions, thereby achieving the effect of offline cleaning by bucket changing.

[0117] S62, the controller 2 controls the piston rod of the lifting cylinder 41 to retract, causing the carrier plate 42 to drive the drive motor 43, the rotating shaft 44, the sleeve 45, the connecting plate 46 and the scraper 48 to rise synchronously as a whole, and the scraper 48 moves out from the inside of the corresponding material dropping component 6.

[0118] S63. Subsequently, the controller 2 controls the piston rod of the switching cylinder 56 of the first group of material feeding components 6 to extend, causing the first group of material feeding components 6 to be lifted away from the weighing sensor 8. Then, the electric slide rail 52 drives the slide table 53 to move, moving the first group of material feeding components 6 away from the feeding component 3. Meanwhile, the second group of material feeding components 6 moves synchronously to the bottom of the feeding component 3. Then, the piston rod of the switching cylinder 56 corresponding to the second group of material feeding components 6 retracts, causing the positioning tube 63 in the second group of material feeding components 6 to press on the weighing sensor 8. Then, the second group of material feeding components 6 continues to perform quantitative feeding operations.

[0119] S64. When condition c occurs twice in the same material feeding component 6, the scraper 48 is used to clean it in step S52.

[0120] Furthermore, during the quantitative feeding process, due to the moisture content of the materials, there will inevitably be a small amount of residue each time the material is added. If each time there is a severe residue, then switching hopper 32 each time is quite cumbersome.

[0121] Each weighing status is controlled collaboratively by the batching and feeding system. The feeding system consists of a data acquisition and monitoring module, an intelligent status determination module, a multi-level execution strategy module, and an execution drive module. Among them, controller 2 is the processing core, and the intelligent status determination module, the multi-level execution strategy module, and the execution drive module are all built into controller 2.

[0122] Data acquisition and monitoring module: Composed of weighing sensor 8 and timer, responsible for real-time acquisition of residual weight and production time parameters.

[0123] Intelligent status determination module: responsible for evaluating the system status based on the collected data.

[0124] Multi-level execution strategy module: responsible for generating the optimal response instruction based on the judgment status.

[0125] Execution driver module: responsible for driving each component and confirming the completion of the action.

[0126] The specific collaborative control process of the feeding system is as follows:

[0127] First, initialization and dynamic threshold setting:

[0128] When the feeding system is powered on and started, controller 2 first initializes the timer in the data acquisition and monitoring module. Subsequently, the intelligent status determination module loads the preset first lenient threshold set and the second strict threshold set.

[0129] In the initial stage of production (0-60 minutes), the intelligent status determination module uses a first relaxed threshold set (the threshold for mild residue is set to 1% of the target weight, the threshold for moderate residue is set to 2% of the target weight, and the threshold for severe residue is set to 3% of the target weight) to determine the residual status, in order to adapt to the stability fluctuations during the equipment startup phase and reduce false triggering.

[0130] In the later stages of production (greater than 60 minutes), the intelligent status determination module switches to the second strict threshold set (the threshold for mild residue is set to 0.5% of the target weight, the threshold for moderate residue is set to 1% of the target weight, and the threshold for severe residue is set to 1.5% of the target weight) to determine the residue status, thereby enhancing the detection sensitivity for subtle residues during the stable production period.

[0131] The drive module command bucket-changing component 5 transfers the first set of material feeding components 6 to the weighing station, starting the first feeding, weighing and discharging cycle.

[0132] Second, continuous cyclical operations and data recording:

[0133] The unit enters a continuous operation cycle, sequentially performing feeding, weighing, and discharging processes. After each discharge, the data acquisition and monitoring module of controller 2 records the weight of the residual material in the material discharge assembly 6 through the weighing sensor 8 and calculates the weight deviation of a single batch. All batch data is transmitted to controller 2 for storage.

[0134] Third, multi-dimensional fusion judgment:

[0135] The intelligent status determination module combines the current production stage with real-time data to make a fusion judgment from two dimensions.

[0136] Dimension 1: Based on real-time residual state determination, the intelligent state determination module dynamically selects the determination threshold set according to the cumulative time of the timer.

[0137] For continuous production time within the initial stage (0-60 minutes), the first lenient threshold set is used.

[0138] If the continuous production time is in the middle or late stage of production (greater than 60 minutes), it will automatically switch to the second strict threshold set.

[0139] After a complete online deep cleaning or hopper 32 switches to offline cleaning, controller 2 resets the timer and re-enables the first lenient threshold set.

[0140] Dimension Two: Determining the cumulative deviation trend based on historical data.

[0141] The intelligent status determination module has a built-in cumulative deviation analysis program. The cumulative deviation analysis program calculates the sum of the absolute values ​​of the deviations of each batch of N batches in real time as the cumulative deviation value. A preset cumulative deviation warning threshold (2% of the target weight) is set. If the cumulative deviation value continues to increase and exceeds the preset warning threshold, even if the current batch is not judged as a moderate stubborn residue abnormal state or a severe residue out-of-control abnormal state in the weighing abnormal state, the intelligent status determination module will immediately generate a residue trend warning signal to indicate the risk of systemic accuracy drift.

[0142] If the cumulative deviation value does not continue to increase, but is within the threshold of mild residue abnormality and tends to stabilize, the material weighing is in a stable state. In this state, only data is recorded, and this batch is not included in the cumulative deviation value.

[0143] Fourth, hierarchical response and adaptive processing:

[0144] Based on the determination results of the multi-dimensional fusion judgment, the multi-level execution strategy module generates corresponding instructions, and the execution drive module drives the execution mechanism to respond.

[0145] Normal weighing status: Instruct online cleaning component 4 to perform a routine 360-degree basic cleaning.

[0146] Mild abnormal state: Instruct online cleaning component 4 to perform 720-degree deep cleaning.

[0147] Moderate abnormal state: Instruct the online cleaning component 4 to activate the scraper 48 in shovel mode for enhanced cleaning.

[0148] Severe abnormal state: Instruct bucket-changing component 5 to perform bucket-changing offline cleanup.

[0149] The specific judgment method is as follows:

[0150] Judgment Method 1: If the judgment is condition c, or if the same material feeding component 6 experiences three consecutive severe abnormal states under the second strict threshold set, the multi-level execution strategy module sends an instruction to the execution drive module, which instructs the bucket changing component 5 to perform a bucket changing operation. The first two severe abnormal states are handled using the strategy for moderate abnormal states.

[0151] Judgment Method 2: If the cumulative deviation of a single batch continues to rise and exceeds the cumulative deviation value, it is determined that the feeding component 6 needs to be thoroughly processed. The multi-level execution strategy module and the execution drive module will also instruct the bucket changing component 5 to switch and take the problematic feeding component 6 offline.

[0152] Furthermore, if multiple severe abnormal states occur consecutively within the initial production phase (0-60 minutes), the time range of the initial production phase needs to be shortened, the current initial production phase should be forcibly ended, the timer should be ignored, and the judgment criteria should be immediately switched to the second strict threshold set.

[0153] Example 4, as Figure 3 As shown, this embodiment verifies the effectiveness of synergistic control of different cleaning methods by monitoring changes in residual data:

[0154] The horizontal axis represents time, indicating the time progression of the unit's quantitative feeding.

[0155] The vertical axis represents the residual amount data.

[0156] The waveform curve represents the real-time change curve of the residual amount data.

[0157] Phase 1: 0-60 minutes (early production stage, first relaxed threshold phase)

[0158] Threshold features: The three dashed lines are positioned relatively high, corresponding to 1%, 2%, and 3% of the target weight in the first relaxed threshold set, respectively. The actual weight in grams for the light threshold can be adjusted according to the actual target. For clarity, in... Figure 12 In the process, the threshold for mild cases in the early stages of production is set to 20g, the threshold for moderate cases to 40g, and the threshold for severe cases to 60g, in order to adapt to the stability fluctuations during the equipment startup phase and reduce false triggering.

[0159] Residue and Cleaning Logic:

[0160] 0-30 minutes: The residual amount fluctuates within the green range of 0-20g, which is a normal weighing condition, triggering the online cleaning component 4 to perform 360-degree basic cleaning.

[0161] 30-40 minutes: The residual amount exceeds 20g, entering a state of mild residue abnormality, triggering 720-degree deep cleaning.

[0162] After 40-60 minutes, when the residual amount drops below the mild threshold, perform a 360-degree basic cleaning.

[0163] Phase 2: 60-200 minutes (mid-to-late stage of production, second stringent threshold phase)

[0164] Threshold characteristics: The three dashed lines are shifted downwards (the threshold for mild cases is 10g, the threshold for moderate cases is 20g, and the threshold for severe cases is 30g), corresponding to 0.5%, 1%, and 1.5% of the target weight of the second stringent threshold set, respectively, to enhance the sensitivity of residue detection during the stable production period.

[0165] Residue and Cleaning Logic:

[0166] 60-100 minutes: The residual amount is in the range of 0-20g, but due to the stricter threshold, the residual amount in the range of 10-20g (circled) has triggered a mild residual abnormality state, and 720-degree deep cleaning is performed.

[0167] 100-120 minutes: When the residue exceeds 20g (diamond mark), it enters a state of moderately stubborn residue abnormality, triggering the scraper 48's shoveling mode to intensify cleaning.

[0168] 120-160 minutes: Triggers a mild residual abnormality state, performs 720-degree deep cleaning.

[0169] 160-200 minutes: The residual amount drops back to the 0-20g range, then perform a 360-degree basic cleaning.

[0170] No bucket change was performed because the severe threshold was not triggered.

[0171] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. An integrated automatic quantitative batching and feeding unit, characterized in that: Including the support (1); Controller (2) is used to control the overall operation of the unit; The feeding assembly (3) is set on the top of the support (1) and is used for material storage and conveying. The feeding assembly (3) includes a frame (31) installed on the top of the support (1) and a hopper (32) installed on the top of the frame (31). The top of the support (1) is provided with a material discharge port. The material feeding assembly (6) consists of two sets, which are used for weighing and are used alternately. The bucket changing assembly (5) drives the displacement of two sets of material dropping assemblies (6). The bucket changing assembly (5) includes a carrier (51) connected to the support (1) and two sets of electric slide rails (52) installed on the side wall of the carrier (51). Each set of electric slide rails (52) has a sliding table (53) on the side wall. Two switching cylinders (56) are installed on the side wall of the sliding table (53). The two sets of switching cylinders (56) correspond to the two sets of material dropping assemblies (6). The piston rod end of the switching cylinder (56) is provided with a plate (54). The plate (54) is inserted into the corresponding material dropping assembly (6). Two crossbars (7) are installed inside the carrier (51). Weighing sensors (8) are installed on the top of the two crossbars (7). The weighing sensors (8) are used to weigh the material feeding assembly (6). The weighing sensors (8) are electrically connected to the controller (2). An online cleaning component (4) is installed on one side of the frame (31). The online cleaning component (4) removes some residue inside the material discharge component (6). The online cleaning component (4) includes two lifting cylinders (41) symmetrically installed on the side wall of the frame (31). The piston rods of the two lifting cylinders (41) are connected to a carrier plate (42). The carrier plate (42) is slidably connected to the inside of the frame (31). A drive motor (43) is installed on the top of the carrier plate (42). The output end of the drive motor (43) is connected to a rotating shaft (44). The outer side wall of the rotating shaft (44) is connected to a sleeve (45). The side wall of the sleeve (45) is connected to a connecting plate (46). A scraper (48) is provided on one side of the connecting plate (46). A square tube (47) is sleeved on the outside of the connecting plate (46). The scraper (48) is hinged to the side of the square tube (47) away from the connecting plate (46). An electric push rod (401) is installed on the side of the connecting plate (46) close to the square tube (47). The output end of the electric push rod (401) is connected to the inner wall of the square tube (47). One side of the square tube (47) is connected to a plate body (402). The side wall of the plate body (402) is connected to one side of the scraper (48). The other side of the square tube (47) is connected to a spring plate (49). The spring plate (49) is connected to the other side of the scraper (48). In the initial state, the scraper (48) is tilted towards the side close to the spring plate (49).

2. The integrated automatic quantitative feeding unit according to claim 1, characterized in that: A feeding motor (33) and a feeding pipe (34) are installed on the top of the bracket (1) and below the frame (31). The outer wall of the feeding pipe (34) is connected to the bottom of the hopper (32). The output end of the feeding motor (33) extends into the interior of the feeding pipe (34) and is connected to an auger (35). The end of the feeding pipe (34) extends above the discharge port.

3. The integrated automatic quantitative batching and feeding unit according to claim 1, characterized in that: The two sets of material discharge components (6) are used for quantitative storage and discharge of materials. Both sets of material discharge components (6) include an outer hopper (61). The two sides of the outer hopper (61) are connected to positioning tubes (63). The insert plate (54) is inserted into the corresponding positioning tube (63). A U-shaped frame (67) is installed on the side wall of each outer hopper (61). Both ends of the U-shaped frame (67) are hinged to baffles (65). The baffles (65) are used to block the bottom opening of the corresponding outer hopper (61).

4. The integrated automatic quantitative batching and feeding unit according to claim 3, characterized in that: The outer hopper (61) has an inner hopper (62) inside, and the inner cavity of the inner hopper (62) is circular.

5. An integrated automatic quantitative feeding unit according to claim 4, characterized in that: Each outer bucket (61) has an adjusting cylinder (64) installed on its side wall. The piston rod end of the adjusting cylinder (64) is hinged to two rocker arms (66). The two rocker arms (66) are correspondingly arranged with two baffles (65). The ends of the rocker arms (66) are hinged to the side walls of the corresponding baffles (65).

6. The integrated automatic quantitative batching and feeding unit according to claim 1, characterized in that: Each of the switching cylinders (56) has a drive cylinder (55) mounted horizontally at the piston rod end, and the piston rod end of the drive cylinder (55) is connected to the insert plate (54).

7. A quantitative batching and feeding method, using the integrated automatic quantitative batching and feeding unit as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. Under the control of the controller (2), the two sets of material feeding components (6) are driven to move through the bucket changing component (5). The two sets of material feeding components (6) are divided into the first set of material feeding components (6) and the second set of material feeding components (6). First, the first set of material feeding components (6) is transferred to the bottom of the material feeding port of the support (1). The material is poured into the inside of the feeding component (3) and quantitatively transported to the inside of the first set of material feeding components (6). The material is quantitatively weighed by the corresponding weighing sensor (8) and the measured data is transmitted to the controller (2). Then, the weighed material is released and discharged. S2. After completing one weighing, the feeding assembly (3), the dropping assembly (6) and the weighing sensor (8) work together to complete the feeding, weighing and discharge process. S3. During the weighing process, the controller (2) determines the current weighing status of the first set of material dropping components (6) by combining the weight parameters collected by the weighing sensor (8). The weighing status of the material dropping components (6) is divided into normal weighing status and abnormal weighing status. S4, Cleaning mode under normal weighing conditions: Under normal weighing conditions, the online cleaning component (4) is used to complete an online basic cleaning during the time interval. That is, the online cleaning component (4) is used to perform a basic cleaning during the time interval between the previous material discharge component (6) discharging material and the next material discharge component (6) feeding material. S5, Cleaning mode for abnormal weighing status: When it is determined that the material feeding component (6) has entered an abnormal weighing status, the controller (2) controls the online cleaning component (4) to perform online deep cleaning. S6. If the weighing abnormality occurs three times in a row, the two sets of material dropping components (6) are alternated using the bucket changing component (5) so that the material dropping component (6) with the weighing abnormality occurs is processed offline. After the second set of material dropping components (6) enters the production line, the entire unit is restored to the weighing normal state. The feeding component (3), the material dropping component (6) and the weighing sensor (8) are used to continue the feeding, weighing and discharge process.

8. The quantitative feeding method according to claim 7, characterized in that: In step S2, the weighing abnormality is divided into three types, specifically including condition a, mild residual abnormality; condition b, moderate stubborn residual abnormality; condition c, severe residual out-of-control abnormality; the controller (2) presets an incremental residual threshold, and uses the weight of the residual material detected by the weighing sensor (8) after the material discharge component (6) completes one discharge as the judgment criterion. Condition a, the criteria for determining the abnormal state of mild residue is: the weight of the residual material after the material feeding component (6) completes one discharge exceeds the threshold of mild residue but is within the threshold of moderate residue; Condition b, the criteria for determining the abnormal state of moderate stubborn residue is: the weight of the residual material after the material discharge component (6) completes one discharge exceeds the moderate residue threshold but is within the heavy residue threshold; Condition c, the judgment condition for severe residual out-of-control abnormal state is: the weight of residual material after the material discharge component (6) completes one discharge exceeds the severe residual threshold.

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