Blocky large particulate matter high-precision weighing and packaging device based on intelligent algorithm and using method of blocky large particulate matter high-precision weighing and packaging device

Abstract

The invention relates to a blocky large particle high-precision weighing and packaging device based on an intelligent algorithm and a using method. The blocky large particle high-precision weighing and packaging device comprises a raw material bin, a chain plate machine is arranged at the bottom of the raw material bin, a rear baffle guide groove is formed in the bottom of the chain plate machine, a front baffle guide groove is formed in one side of the rear baffle guide groove, and a four-head weighing device is arranged at the bottom of the front baffle guide groove; the bottom of the four-head weighing device is provided with a material guiding bin, one side of the material guiding bin is provided with a plate pushing machine, the automatic packaging machine has the advantages that the structure is simple, maintenance is easy, the packaging action is controlled by a PLC, the automation degree is high, manpower resources are greatly reduced, and the packaging efficiency is improved; a multi-stage weighing and feeding mode is adopted for weighing precision, a closed-loop system is formed through data analysis and feedback to ensure high precision of the system, the precision requirement of packaging weight is met through cooperation of an algorithm and a mechanical structure design, labor intensity is relieved, and production efficiency is improved. The use efficiency can be improved, and the application of the high-precision weighing and packaging system in the field of blocky large-particle materials is filled.

Description

Technical Field

[0001] The present invention relates to the technical field of advanced manufacturing and automation systems, and in particular to a high-precision weighing and packaging device for large bulk particles based on an intelligent algorithm and a use method thereof. Background Art

[0002] At present, the high-precision weighing and packaging of bulky large particles mainly comes from the high demand for weight measurement accuracy and efficiency in the raw material industries such as food, medicine, and chemical products. This technology is mainly based on advanced sensor technology, control algorithms, and mechanical structures. The sensor senses the weight changes of the measured object in real time, and then corrects and compensates the measured data through the control algorithm after digital processing, so as to output accurate weight values. At the same time, it realizes seamless docking with the mechanical structure, realizes automated and continuous weighing detection, and further improves packaging efficiency.

[0003] For common powdery and small granular materials, mature high-precision weighing and packaging systems are common due to the light weight of individual materials. However, high-precision weighing and packaging for bulk and large granular materials is rare.

[0004] In summary, the development of a high-precision weighing and packaging system for bulky and large-particle materials has broad application prospects and development potential. Summary of the invention

[0005] The purpose of the present invention is to provide a high-precision weighing and packaging device for large bulk particles based on an intelligent algorithm and a method of use to solve the problems mentioned in the above background technology.

[0006] The technical solution of the present invention is a high-precision weighing and packaging device for large block particles based on an intelligent algorithm, comprising a raw material bin, a chain plate machine is provided at the bottom of the raw material bin, a rear-block material guide trough is provided at the bottom of the chain plate machine, a front-block material guide trough is provided on one side of the rear-block material guide trough, a four-head weighing device is provided at the bottom of the front-block material guide trough, a material guide bin is provided at the bottom of the four-head weighing device, a push plate machine is provided on one side of the material guide bin, a telescopic material guide cylinder is provided at the bottom of the material guide bin, a roller weighing machine is provided at the bottom of the telescopic material guide cylinder, a first main frame is provided on one side of the roller weighing machine, a 30KG range weighing sensor is provided on one side of the front-block material guide trough, a first photoelectric sensor is provided at the bottom of the telescopic material guide cylinder, a second photoelectric sensor is provided at the bottom of the first photoelectric sensor, a third photoelectric sensor is provided on one side of the second photoelectric sensor, a first-range 100KG weighing sensor is provided on one side of the third photoelectric sensor, and a second-range 100KG weighing sensor is provided at the bottom of the push plate machine.

[0007] In one embodiment, the four-head weighing device includes a cylinder, a bracket, a connecting rod, and a hopper. The four-head weighing device is composed of a cylinder, a bracket, a connecting rod, and a hopper.

[0008] In one embodiment, the push plate machine includes a push plate device, a conveyor belt, a push and block mechanism, a fourth photoelectric sensor, and an L-shaped material guide trough. The push plate machine includes a push plate device, a conveyor belt, a push and block mechanism, a fourth photoelectric sensor, and an L-shaped material guide trough.

[0009] In one embodiment, the roller weighing machine includes a three-phase asynchronous motor, a roller, a second main frame, a support leg, and a clamping mechanism. The roller weighing machine includes a three-phase asynchronous motor, a roller, a second main frame, a support leg, and a clamping mechanism.

[0010] A method for using a high-precision weighing and packaging device for bulky large particles based on an intelligent algorithm comprises the following steps:

[0011] S1: First, the PLC is used to control the discharge of the raw material bin. First, the chain conveyor feeds the push plate machine through the rear guide trough. At the same time, the second range 100KG weighing sensor measures the feeding weight and stops after reaching the preset threshold. The barrel passes through the roller weighing machine, and the feedback signal detected by the first photoelectric sensor, the second photoelectric sensor, and the third photoelectric sensor is given to the PLC to control the roller weighing machine to stop, so that the barrel reaches the bottom of the telescopic guide barrel. Then, the first range 100KG weighing sensor measures the weight of the empty barrel. After the measurement is completed, the clamping mechanism fixes the barrel body, and the telescopic guide barrel extends to the barrel mouth;

[0012] S2: Secondly, the PLC controls the discharge of the raw material bin, the hopper of the four-head weighing device opens, and the chain conveyor sequentially feeds the material through the front guide trough, the four-head weighing device, the guide bin, and the telescopic guide barrel. During the feeding process, the first range 100KG weighing sensor measures the charging weight in real time. When the charging reaches the A value (packaging weight 95%-98% range), the raw material bin stops discharging, the chain conveyor stops transporting materials, and then the hopper of the four-head weighing device is closed. After it is closed, the chain conveyor starts transporting materials to transport the remaining materials to the hopper of the four-head weighing device, and the delay is 5- After 10 seconds, the chain conveyor stops transporting materials. After the transportation is completed, the weight B value of the materials in the four hoppers (B1, B2, B3, and B4) is measured by a 30KG weighing sensor. The result Ga of the required packaging weight G value minus the A value is calculated by PLC, and logically analyzed and compared with the B value. One or several hoppers closest to the result Ga are opened to refill the barrel. After the refilling is completed, the first 100KG weighing sensor measures the loading weight again to obtain the result Gb. Gb is divided by the weight of each piece of material Gn to obtain the number of refills N.

[0013] S3: Finally, the push plate machine is started, and the push and block mechanism repeatedly acts in conjunction with the conveyor belt and photoelectric sensor to feed N amount of material into the barrel through the L-shaped material guide trough. The above PLC performs action control, logic analysis, and calculation to achieve the purpose of accurate weighing and packaging. This system is suitable for the packaging of large particles with similar single particle weight, especially for packaging conditions that require an accuracy of 1-2 material weight deviation.

[0014] The beneficial effects provided by the present invention are:

[0015] The present invention has a simple structure and is easy to maintain. The packaging action is controlled by PLC and has a high degree of automation, which greatly reduces human resources and improves packaging efficiency. The weighing accuracy adopts a multi-level weighing and feeding mode, and a closed-loop system is formed through data analysis and feedback to ensure the high accuracy of the system. The accuracy requirements of the packaging weight are achieved through the combination of algorithms and mechanical structure design, which not only reduces labor intensity, but also improves utilization efficiency and fills the application of high-precision weighing and packaging systems in the field of bulk large particle materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the present invention;

[0017] Figure 2 It is a stereogram of the present invention;

[0018] Figure 3 This is a schematic diagram of the cylinder structure of the component of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the push plate device of the component of the present invention;

[0020] Figure 5 It is a schematic diagram of the structure of a three-phase asynchronous motor component of the present invention.

[0021] In the attached drawings, 1, raw material bin; 2, chain plate conveyor; 3, rear block material guide trough; 4, front block material guide trough; 5, four-head weighing device; 6, push plate machine; 7, guide bin; 8, telescopic guide cylinder; 9, roller weighing machine; 10, first main frame; 11, 30KG range weighing sensor; 12, first photoelectric sensor; 13, second photoelectric sensor; 14, third photoelectric sensor; 15, first range 100KG weighing sensor; 16, second range 100KG weighing sensor; 5.1, cylinder; 5.2, bracket; 5.3, connecting rod; 5.4, hopper; 6.1, push plate device; 6.2, conveyor belt; 6.3, push and block mechanism; 6.4, fourth photoelectric sensor; 6.5, L-shaped guide trough; 9.1, three-phase asynchronous motor; 9.2, roller; 9.3, second main frame; 9.4, support leg; 9.5, clamping mechanism. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0023] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present invention, it should be understood that if the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] In one embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, a high-precision weighing and packaging device for blocky large particles based on an intelligent algorithm comprises a raw material bin 1, a chain plate machine 2 is provided at the bottom of the raw material bin 1, a rear-block material guide trough 3 is provided at the bottom of the chain plate machine 2, a front-block material guide trough 4 is provided on one side of the rear-block material guide trough 3, a four-head weighing device 5 is provided at the bottom of the front-block material guide trough 4, a guide bin 7 is provided at the bottom of the four-head weighing device 5, a push plate machine 6 is provided on one side of the guide bin 7, a telescopic guide cylinder 8 is provided at the bottom of the guide bin 7, a roller weighing machine 9 is provided at the bottom of the telescopic guide cylinder 8, a first main frame 10 is provided on one side of the roller weighing machine 9, a 30KG range weighing sensor 11 is provided on one side of the front-block material guide trough 4, a first photoelectric sensor 12 is provided at the bottom of the telescopic guide cylinder 8, a second photoelectric sensor 13 is provided at the bottom of the first photoelectric sensor 12, a third photoelectric sensor 14 is provided on one side of the second photoelectric sensor 13, and a first range 100KG weighing sensor is provided on one side of the third photoelectric sensor 14 15. A second range 100KG weighing sensor 16 is provided at the bottom of the push plate machine 6. The four-head weighing device 5 includes a cylinder 5.1, a bracket 5.2, a connecting rod 5.3, and a hopper 5.4. The four-head weighing device 5 is composed of a cylinder 5.1, a bracket 5.2, a connecting rod 5.3, and a hopper 5.4. The push plate machine 6 includes a push plate device 6.1, a conveyor belt 6.2, a push block mechanism 6.3, a fourth photoelectric sensor 6.4, an L-shaped guide trough 6.5, and a push plate The machine 6 is composed of a push plate device 6.1, a conveyor belt 6.2, a push block mechanism 6.3, a fourth photoelectric sensor 6.4, and an L-shaped material guide trough 6.5. The roller weighing machine 9 includes a three-phase asynchronous motor 9.1, a roller 9.2, a second main frame 9.3, a leg 9.4, and a clamping mechanism 9.5. The roller weighing machine 9 is composed of a three-phase asynchronous motor 9.1, a roller 9.2, a second main frame 9.3, a leg 9.4, and a clamping mechanism 9.5.

[0025] The raw material warehouse 1 adopts different structural forms according to actual conditions, such as sunken silo, bucket elevator, climbing belt conveyor, etc. The chain plate machine 2 is used to cache and convey materials. It can smoothly switch the conveying direction and convey materials to both ends as needed. The rear guide trough 3 is fixed on the chain plate machine 2, and the front guide trough 4 is fixed on the chain plate machine 2. The four-head weighing device 5 is installed on the 30KG range weighing sensor 11, which is fixed to the first main frame 10 as a whole. The push plate machine 6 is installed on the second range 100KG weighing sensor 16, which is fixed to the first main frame 10 as a whole. The guide bin 7 is fixed on the first main frame 10, and the telescopic guide cylinder 8 is fixed on the guide bin 7. The roller weighing machine 9 is installed directly below the telescopic guide cylinder 8. The first photoelectric sensor 12, the second photoelectric sensor 13, the third photoelectric sensor 14, and the first range 100KG weighing sensor 15 are installed on the roller weighing machine 9;

[0026] The first main frame 10 is equipped with a chain plate machine 2, a push plate machine 6, a material guide bin 7 and other devices. The overall structure is compact and convenient for inspection and troubleshooting. In the structural design, the frame adopts square steel pipe welding to improve the structural strength and rigidity. The actuators are screwed for easy disassembly and replacement. The chain plate machine 2 feeds the push plate machine 6 and the four-head weighing device 5 respectively through the forward and reverse rotation of the motor, reducing the number of motors and improving the cost performance. Positioning relies on photoelectric switches, and weighing relies on weighing sensors to improve motion control and weighing accuracy. According to the signals and data fed back by various sensors, after being analyzed by PLC, instructions are issued to control the operation of the entire system. The four-head weighing device 5 uses four independent weighing units for weighing, and then the data are processed and analyzed by PLC to finally obtain accurate weight data;

[0027] The items to be weighed are placed on the scale pan, and four independent weighing units weigh them at the same time, and the data is transmitted to the PLC control system. After processing, accurate weight data is output, and the material barrel is refilled by controlling the actuator according to the analysis result of the weight data. This device has the characteristics of high efficiency, versatility, strong flexibility and high reliability. Finally, the amount of refilled material is controlled by the result of PLC analysis to accurately refill the push mechanism 6.3 at the end of the push plate machine 6, so that the packaging accuracy is controlled within the weight range of one material. Since there are certain impacts and noises in the packaging process, connection holes for installing sound insulation boards are reserved in the main structure design, which can be installed according to customer needs. In addition, voice recognition can be installed to enhance user experience. Taking the above factors into consideration, the present invention has a compact structure, high cost performance, accurate weighing, scalability, and greatly improved service life.

[0028] A method for using a high-precision weighing and packaging device for bulky large particles based on an intelligent algorithm comprises the following steps:

[0029] S1: First, the PLC is used to control the discharge of the raw material bin 1. First, the chain conveyor 2 is used to feed the push plate machine 6 through the rear guide groove 3. At the same time, the second range 100KG weighing sensor 16 measures the feeding weight and stops after reaching the preset threshold. The barrel passes through the roller weighing machine 9. The feedback signal detected by the first photoelectric sensor 12, the second photoelectric sensor 13, and the third photoelectric sensor 14 is given to the PLC to control the roller weighing machine 9 to stop, so that the barrel reaches the bottom of the telescopic guide barrel 8. Then, the first range 100KG weighing sensor 15 measures the weight of the empty barrel. After the measurement is completed, the clamping mechanism 9.5 fixes the barrel body, and the telescopic guide barrel 8 extends to the barrel mouth.

[0030] S2: Secondly, the PLC controls the discharge of the raw material bin 1, the hopper 5.4 of the four-head weighing device 5 is opened, and the chain plate machine 2 sequentially feeds the material through the front guide trough 4, the four-head weighing device 5, the guide bin 7, and the telescopic guide tube 8 to the material barrel. During the feeding process, the first range 100KG weighing sensor 15 measures the charging weight in real time. When the charging reaches the A value (packaging weight 95%-98% range), the raw material bin 1 stops discharging, the chain plate machine 2 stops transporting the material, and then the hopper 5.4 of the four-head weighing device 5 is closed. After it is closed, the chain plate machine 2 starts to transport the remaining material to the hopper of the four-head weighing device 5. 5.4, ​​after a delay of 5-10 seconds, the chain conveyor 2 stops conveying materials. After conveying materials, the weight B values ​​of materials in the four hoppers (B1, B2, B3, and B4) are measured by the 30KG range weighing sensor 11. The result Ga of the required packaging weight G value minus the A value is calculated by PLC, and the result Ga is compared with the B value for logical analysis. One or several hoppers 5.4 closest to the result Ga are opened to refill the barrel. After refilling, the first 100KG range weighing sensor 15 measures the loading weight again to obtain the result Gb. Gb is divided by the weight Gn of each piece of material to obtain the amount N of refilling required.

[0031] S3: Finally, the push plate machine 6 is started, and the push and block mechanism 6.3 repeatedly acts in cooperation with the conveyor belt 6.2 and the photoelectric sensor 6.4 to feed N amount of materials into the barrel through the L-shaped material guide trough 6.5. The above PLC performs action control, logic analysis and calculation to achieve the purpose of accurate weighing and packaging. This system is suitable for the packaging of large particles with similar single particle weight, especially for packaging conditions requiring an accuracy of 1-2 material weight deviation.

[0032] Working principle: The material discharge of the raw material warehouse 1 is controlled by PLC. First, the chain conveyor 2 feeds the material to the push plate machine 6 through the rear guide trough 3. At the same time, the second range 100KG weighing sensor 16 measures the feeding weight and stops after reaching the preset threshold. The barrel passes through the roller weighing machine 9. The feedback signal detected by the first photoelectric sensor 12, the second photoelectric sensor 13, and the third photoelectric sensor 14 is given to the PLC to control the roller weighing machine 9 to stop, so that the barrel reaches the bottom of the telescopic guide barrel 8. After that, the first range 100KG weighing sensor 15 measures the weight of the empty barrel. After the measurement is completed, the clamping mechanism 9.5 fixes the barrel body, and the telescopic guide barrel 8 extends to the barrel mouth.

[0033] Secondly, the PLC controls the discharge of the raw material bin 1, the hopper 5.4 of the four-head weighing device 5 opens, and the chain plate conveyor 2 sequentially feeds the material through the front guide trough 4, the four-head weighing device 5, the guide bin 7, and the telescopic guide tube 8 to the material barrel. During the feeding process, the first range 100KG weighing sensor 15 measures the charge weight in real time. When the charge reaches the A value (packaging weight 95%-98% range), the raw material bin 1 stops discharging, the chain plate conveyor 2 stops transporting the material, and then the hopper 5.4 of the four-head weighing device 5 is closed. After it is closed, the chain plate conveyor 2 starts to transport the remaining material to the hopper 5 of the four-head weighing device 5. 4. After a delay of 5-10 seconds, the chain conveyor 2 stops conveying materials. After conveying materials, the weight B values ​​of the materials in the four hoppers (B1, B2, B3, and B4) are measured by the 30KG range weighing sensor 11. The result Ga of the required packaging weight G value minus the A value is calculated by PLC, and the result Ga is compared with the B value for logical analysis. One or several hoppers 5.4 closest to the result Ga are opened to refill the barrel. After refilling, the first 100KG range weighing sensor 15 measures the loading weight again to obtain the result Gb. Gb is divided by the weight Gn of each piece of material to obtain the amount N of refilling required.

[0034] Finally, the push plate machine 6 is started, and the push and block mechanism 6.3 repeatedly acts in cooperation with the conveyor belt 6.2 and the photoelectric sensor 6.4 to feed N amount of materials into the barrel through the L-shaped material guide trough 6.5. The above PLC performs action control, logic analysis and calculation to achieve the purpose of accurate weighing and packaging. This system is suitable for the packaging of large particles with similar single particle weight, especially for packaging conditions requiring an accuracy of 1-2 material weight deviation.

[0035] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A high-precision weighing and packaging device for bulky large particles based on an intelligent algorithm, characterized in that: The invention comprises a raw material bin (1), wherein a chain plate machine (2) is provided at the bottom of the raw material bin (1), a rear block material guide trough (3) is provided at the bottom of the chain plate machine (2), a front block material guide trough (4) is provided on one side of the rear block material guide trough (3), a four-head weighing device (5) is provided at the bottom of the front block material guide trough (4), a material guide bin (7) is provided at the bottom of the four-head weighing device (5), a push plate machine (6) is provided on one side of the material guide bin (7), a telescopic material guide cylinder (8) is provided at the bottom of the telescopic material guide cylinder (8), a roller weighing machine (9) is provided on one side of the roller weighing machine (9) A first main frame (10) is provided, a weighing sensor (11) with a measuring range of 30KG is provided on one side of the front guide groove (4), a first photoelectric sensor (12) is provided at the bottom of the telescopic guide cylinder (8), a second photoelectric sensor (13) is provided at the bottom of the first photoelectric sensor (12), a third photoelectric sensor (14) is provided on one side of the second photoelectric sensor (13), a first weighing sensor (15) with a measuring range of 100KG is provided on one side of the third photoelectric sensor (14), and a second weighing sensor (16) with a measuring range of 100KG is provided at the bottom of the push plate machine (6).

2. According to claim 1, a high-precision weighing and packaging device for bulky large particles based on an intelligent algorithm is characterized in that: The four-head weighing device (5) comprises a cylinder (5.1), a bracket (5.2), a connecting rod (5.3) and a hopper (5.4). The four-head weighing device (5) is composed of a cylinder (5.1), a bracket (5.2), a connecting rod (5.3) and a hopper (5.4).

3. The high-precision weighing and packaging device for bulky large particles based on an intelligent algorithm according to claim 2 is characterized in that: The plate pusher (6) comprises a plate pusher device (6.1), a conveyor belt (6.2), a push-block mechanism (6.3), a fourth photoelectric sensor (6.4), and an L-shaped material guide trough (6.5). The plate pusher (6) comprises a plate pusher device (6.1), a conveyor belt (6.2), a push-block mechanism (6.3), a fourth photoelectric sensor (6.4), and an L-shaped material guide trough (6.5).

4. According to claim 1, a high-precision weighing and packaging device for bulky large particles based on an intelligent algorithm is characterized in that: The roller weighing machine (9) comprises a three-phase asynchronous motor (9.1), a roller (9.2), a second main frame (9.3), a support leg (9.4), and a clamping mechanism (9.5). The roller weighing machine (9) comprises a three-phase asynchronous motor (9.1), a roller (9.2), a second main frame (9.3), a support leg (9.4), and a clamping mechanism (9.5).

5. The method for using the high-precision weighing and packaging device for bulky large particles based on an intelligent algorithm as described in claims 1-4, characterized in that: The following steps are involved: S1: First, the material is discharged from the raw material bin (1) by the PLC, and the material is first fed to the push plate machine (6) through the chain plate machine (2) and the rear stop guide trough (3). At the same time, the second range 100KG weighing sensor (16) measures the weight of the feeding material and stops after reaching the preset threshold value. The material barrel passes through the roller weighing machine (9), and the feedback signal detected by the first photoelectric sensor (12), the second photoelectric sensor (13), and the third photoelectric sensor (14) is given to the PLC to control the roller weighing machine (9) to stop, so that the material barrel reaches the bottom of the telescopic material guide cylinder (8). Then, the first range 100KG weighing sensor (15) measures the weight of the empty material barrel. After the measurement is completed, the clamping mechanism (9.5) fixes the barrel body, and the telescopic material guide cylinder (8) extends to the barrel mouth; S2: Secondly, the PLC controls the discharge of the raw material bin (1), the hopper (5.4) of the four-head weighing device (5) is opened, and the chain plate conveyor (2) sequentially feeds the material through the front guide trough (4), the four-head weighing device (5), the guide bin (7), and the telescopic guide tube (8) to the feeding barrel. During the feeding process, the first range 100KG weighing sensor (15) measures the charge weight in real time. When the charge reaches the A value (packaging weight range of 95%-98%), the raw material bin (1) stops discharging, the chain plate conveyor (2) stops transporting the material, and then the hopper (5.4) of the four-head weighing device (5) is closed. After it is closed, the chain plate conveyor (2) starts transporting the material to transport the remaining material to the four-head weighing device (5). The hopper (5.4) of the weighing device (5) stops conveying materials after a delay of 5-10 seconds. After the conveying is completed, the weight B values ​​(B1, B2, B3, and B4) of the materials in the four hoppers are measured by a 30KG weighing sensor (11). The result Ga of the required packaging weight G value minus the A value is calculated by PLC and compared with the B value. One or more hoppers (5.4) closest to the result Ga are opened to refill the barrel. After the refilling is completed, the first 100KG weighing sensor (15) measures the weight of the material again to obtain the result Gb. Gb is divided by the weight Gn of each piece of material to obtain the amount N of refilling required. S3: Finally, the push plate machine (6) is started, and the push and block mechanism (6.3) repeatedly acts in cooperation with the conveyor belt (6.2) and the photoelectric sensor (6.4) to feed N amount of material into the barrel through the L-shaped material guide trough (6.5). The above PLC performs action control, logic analysis and calculation to achieve the purpose of accurate weighing and packaging. This system is suitable for packaging large particles with similar single particle weight, especially for packaging conditions requiring an accuracy of 1-2 particle weight deviation.

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