Static weighing continuous conveying feeder control system and working method thereof

Abstract

The application relates to the technical field of feeders, in particular to a static weighing continuous conveying feeder control system and a working method thereof, which comprises a weighing unit and a discharging unit, support units are arranged on the top outer walls of the weighing unit, conveying units are arranged in the support units, a plurality of reflection units are arranged on the outer part of the conveying units in an equidistance structure, two sensor modules are arranged on the inner wall of one side of the support units through bolts, the discharging unit is arranged above the support units, and a control unit is arranged on the outer wall of one side of the support units through bolts; when the discharging unit discharges, the weighing unit can accurately weigh the materials on the conveying units, continuous weighing of the feeder under static state is realized, an accurate weighing value can be obtained, the precision of the feeder feedback to the control unit is improved, the control unit can accurately control the operation of the feeder, and problems such as poor feeding precision during feeding are avoided.

Description

Technical Field

[0001] This invention relates to the field of feeder technology, specifically a static weighing continuous conveying feeder control system and its working method. Background Technology

[0002] With the deepening application of automation control technology in agriculture, animal husbandry and industry, the industry's requirements for the precision and efficiency of material supply are constantly increasing. As one of the most widely used mechanical devices, the weighing feeder is used to transport useful raw materials and is an intermediate material transfer device.

[0003] Chinese Patent No. CN203606016U provides an automatic weighing feeder, comprising a material tank and a weighing feeder. In use, the two forks at the front of a forklift are first inserted into the forklift fork holes on the material tank. Then, the material tank filled with mud is placed on the weighing feeder. At this time, the unloading valve opening device causes the unloading valve, along with the cutter, to move upwards under the control of the guide device. The clumps of mud are cut by the cutter and flow into the weighing feeder below. The operator presets values ​​on the control box and then presses the start button. The variable frequency motor starts, and the mud, after being evenly mixed by the agitator, enters the screw conveyor and flows out from the outlet into a container on a tray. When the weight of the mud in the container approaches the preset value, the variable frequency motor speed decreases, and the feeding speed slows down to improve weighing accuracy (the feeding speed is preset). When the weight of the mud in the container reaches the preset value, the variable frequency motor automatically shuts off, stopping the output of mud. Simultaneously, a pneumatic baffle extends to prevent the mud from slipping, completing one weighing cycle. This invention has the advantages of high weighing accuracy, high efficiency, less manpower, and low labor intensity.

[0004] Most weighing feeder control systems control the feeder based on data feedback. However, most existing feeders are dynamic feeders, and the weighing accuracy of the weighing rollers is poor when the feeder is operating. This leads to problems such as poor feeding accuracy when the feeder control system controls the feeder based on the weighing results of the weighing rollers. Therefore, there is an urgent need to develop a static weighing continuous conveying feeder control system and its working method. Summary of the Invention

[0005] The purpose of this invention is to provide a static weighing continuous conveying feeder control system and its working method, in order to solve the problem mentioned in the background art that most existing feeders are dynamic feeders, and the weighing accuracy of the weighing rollers is poor when the feeder is running and weighing, which leads to poor feeding accuracy when the feeder control system controls the feeder based on the weighing results of the weighing rollers.

[0006] The technical solution of the present invention is: a static weighing continuous conveying feeder control system, including a weighing unit and a unloading unit. The weighing unit is provided with support units on both sides of the top outer wall, and a conveying unit is provided inside the support unit. Multiple reflective units are provided outside the conveying unit in an equidistant structure. Two sensor modules are installed on the inner wall of one side of the support unit by bolts. The unloading unit is located above the support unit. A control unit is installed on the outer wall of one side of the support unit by bolts, and the control unit is electrically connected to the unloading unit, the weighing unit, and the sensor modules by wires.

[0007] Furthermore, the weighing unit is one of a weighbridge or a weighing sensor array.

[0008] Furthermore, the support unit is constructed by welding together multiple square tubes and two metal baffles.

[0009] Furthermore, the conveying unit is a belt-type structure, specifically composed of an electric roller, a regular roller, multiple support rollers, and a belt.

[0010] Furthermore, the reflective unit is one of reflective sticker or reflective plate, and the reflective unit is glued to the conveying unit. Two adjacent reflective units can form a material storage area.

[0011] Furthermore, the sensor module is an optical sensor, and the sensor module is composed of an optical transmitter and an optical receiver. The unloading unit is one of a star-shaped unloader or a vibrating feeder.

[0012] Furthermore, the control unit includes an operation panel, a display screen, a signal module, a PLC unit, and a frequency converter unit, with the operation panel and the display screen soldered onto the same circuit board.

[0013] Furthermore, the signal module is either a Bluetooth or WiFi router, the PLC unit is an editable PLC controller, and the PLC unit is electrically connected to the operation panel, display screen, signal module, and frequency converter unit via wires. The frequency converter unit is a frequency converter, and the frequency converter mainly consists of a rectifier AC to DC converter, a filter, a DC to AC converter, a braking unit, a drive unit, a detection unit, and a microprocessor unit.

[0014] Furthermore, when the conveying unit is conveying material, it transmits the rotation speed data to the PLC unit in the control unit. Then, the PLC unit controls the operation of the frequency converter in the control unit, thereby adjusting the unloading flow rate of the unloading unit.

[0015] A method for operating a static weighing continuous conveying feeder includes the following steps: S1. Start-up and operation: The operation control unit controls the conveying unit, weighing unit, sensor module and unloading unit to start up, so that the feeder can operate; S2. Sensing Setting: As the conveying unit moves, multiple reflective units also move. When one of the reflective units passes the sensor module on the left side of the unloading unit, the reflective unit reflects the light emitted by the sensor module. The reflected light is then received by the sensor module. Subsequently, the control unit controls the unloading unit to operate based on the detection results of the sensor module, causing the unloading unit to start unloading. When the sensor module on the right side of the unloading unit detects another reflective unit, the unloading unit stops moving. Then, the amount of material unloaded by the unloading unit is determined based on the detection of the weighing unit. The speed of the conveying unit and the unloading speed of the unloading unit are then adjusted based on the amount of material, so that a certain amount of material is evenly spread in the storage area formed by the two adjacent reflective units. S3. Unloading and Weighing: After the above process is adjusted, the control unit can be operated to make the equipment feed materials. During this process, when the unloading unit unloads materials, the conveying unit will carry the materials and make the materials falling from the unloading unit spread flat on the conveying unit. During this process, the weighing unit will weigh the materials. When the weighing value reaches the set value, the unloading unit will stop, while the conveying unit will continue to operate and repeat the above process to continue unloading. The materials will also be moved out from the other end of the conveying unit along with the water conveying unit.

[0016] This invention provides an improved control system and operating method for a static weighing continuous conveying feeder, which has the following improvements and advantages compared with the prior art: The weighing unit designed in this invention can accurately weigh the material on the conveying unit when the unloading unit is unloading, realizing continuous weighing of the feeder under static conditions and obtaining an accurate weighing value. This improves the accuracy of the feeder's feedback to the control unit, enabling the control unit to accurately control the operation of the feeder and avoid problems such as poor feeding accuracy during feeding.

[0017] The reflective unit and sensor module designed in this invention can form a material storage area between two adjacent reflective units. With the sensor module, the unloading unit can be controlled. Furthermore, by adjusting the speed of the conveying unit and the unloading flow rate of the unloading unit, a certain weight of material can fall into the material storage area formed by the two adjacent reflective units. With the weighing unit, the quantitative feeding of the feeder can be determined, improving the accuracy of the feeder and providing a basis for the control unit.

[0018] The control unit designed in this invention can automatically control the conveying unit based on its operating status and receive information such as the working status of the frequency converter and the unloading unit, thereby reducing manpower and achieving the goal of automated feeding. Attached Figure Description

[0019] The present invention will be further explained below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the control unit structure of the present invention; Figure 3 This is a flowchart of the control process of the present invention; Figure 4 This is a flowchart of the method of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Weighing unit; 2. Support unit; 3. Conveying unit; 4. Reflection unit; 5. Sensor module; 6. Unloading unit; 7. Control unit. Implementation

[0021] The following will be combined with the appendix Figure 1-4 This invention will be described in detail, and the technical solutions in the embodiments of this invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] This invention provides an improved control system for a static weighing continuous conveying feeder, such as... Figures 1-3As shown, the system includes a weighing unit 1 and an unloading unit 6. Support units 2 are installed on both sides of the top outer wall of the weighing unit 1, and a conveying unit 3 is installed inside the support unit 2. Multiple reflective units 4 are arranged at equal intervals outside the conveying unit 3. Two sensor modules 5 are bolted to the inner wall of one side of the support unit 2. The unloading unit 6 is located above the support unit 2. A control unit 7 is bolted to the outer wall of one side of the support unit 2, and the control unit 7 is electrically connected to the unloading unit 6, the weighing unit 1, and the sensor modules 5 via wires. The weighing unit 1 is a weighbridge. The support unit 2 is constructed by welding multiple square tubes and two metal baffles. The conveying unit 3 is a belt-type structure, specifically composed of an electric roller, a regular roller, multiple support rollers, and a belt. The reflective units 4 are infrared reflectors. The material is glued to the conveying unit 3. Two adjacent reflective units 4 can form a material storage area. The sensor module 5 is an optical sensor, which is composed of an optical transmitter and an optical receiver. The unloading unit 6 is a star-shaped unloader. The control unit 7 includes an operation panel, a display screen, a signal module, a PLC unit, and a frequency converter unit. The operation panel and the display screen are soldered on the same circuit board. The signal module is either a Bluetooth or WiFi router. The PLC unit is a programmable PLC controller, which is electrically connected to the operation panel, the display screen, the signal module, and the frequency converter unit through wires. The frequency converter unit is a frequency converter, which mainly consists of a rectifier AC to DC converter, a filter, an inverter DC to AC converter, a braking unit, a drive unit, a detection unit, and a microprocessor unit.

[0024] Furthermore, when the conveying unit 3 is conveying material, it will transmit the rotation speed data to the PLC unit in the control unit 7. Then, the PLC unit will control the operation of the frequency converter in the control unit 7, thereby adjusting the unloading flow rate of the unloading unit 6.

[0025] A working method for a static weighing continuous conveying feeder, such as Figure 4 The process, as shown, includes the following steps: S1. Start-up and operation: The operation control unit 7 controls the conveying unit 3, weighing unit 1, sensor module 5 and unloading unit 6 to start up, so that the feeder can operate. S2. Sensing Setting: As the conveying unit 3 moves, multiple reflecting units 4 also move. When one of the reflecting units 4 passes the sensor module 5 on the left side of the unloading unit 6, the reflecting unit 4 will reflect the light emitted by the sensor module 5. The reflected light will then be received by the sensor module 5. Subsequently, the control unit 7 will control the unloading unit 6 to operate based on the detection result of the sensor module 5, so that the unloading unit 6 starts unloading. When the sensor module 5 located on the right side of the unloading unit 6 detects another reflecting unit 4, the unloading unit 6 will stop moving. Then, the amount of material unloaded by the unloading unit 6 will be determined based on the detection of the weighing unit 1. The speed of the conveying unit 3 and the unloading speed of the unloading unit 6 will be adjusted based on the amount of material, so that a certain amount of material is evenly spread in the storage area formed by the two adjacent reflecting units 5. S3. Unloading and Weighing: After the above process is adjusted, the control unit 7 can be operated to feed the equipment. During this process, when the unloading unit 6 unloads, the conveying unit 3 will carry the material and make the material falling from the unloading unit 6 spread flat on the conveying unit 3. During this process, the weighing unit 1 will weigh the material. When the weighing value reaches the set value, the unloading unit 6 will stop, and the conveying unit 3 will continue to operate. The above process will be repeated to continue unloading, and the material will be moved out from the other end of the conveying unit 3 along with the water conveying unit 3.

[0026] Working principle: The operation control unit 7 starts the conveying unit 3, weighing unit 1, sensor module 5, and unloading unit 6, enabling the feeder to operate. As the conveying unit 3 moves, multiple reflecting units 4 also move. When one reflecting unit 4 passes the sensor module 5 on the left side of the unloading unit 6, it reflects the light emitted by the sensor module 5. The reflected light is then received by the sensor module 5. The control unit 7 then controls the unloading unit 6 to operate based on the detection results from the sensor module 5, causing the unloading unit 6 to begin unloading. When the sensor module 5 on the right side of the unloading unit 6 detects another reflecting unit 4, the unloading unit 6 stops moving. The unloading order is then determined based on the detection of the weighing unit 1. The amount of material unloaded from unit 6 is then used to adjust the speed of conveying unit 3 and unloading unit 6, so that a certain amount of material is evenly spread in the storage area formed by two adjacent reflective units 5. After the above process is adjusted, control unit 7 can be operated to make the equipment feed. During this process, when unloading unit 6 unloads, conveying unit 3 will carry the material, so that the material falling from unloading unit 6 will be spread flat on conveying unit 3. During this process, weighing unit 1 will weigh the material. When the weighing value reaches the set value, unloading unit 6 will stop, while conveying unit 3 will continue to operate and repeat the above process to continue unloading. The material will also be moved out from the other end of conveying unit 3 along with the transport of water unit 3.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control system for a static weighing continuous conveying feeder, characterized in that: The weighing unit (1) and the unloading unit (6) are provided. The weighing unit (1) is provided with support units (2) on both sides of the top outer wall. The support unit (2) is provided with a conveying unit (3) inside. The conveying unit (3) is provided with multiple reflective units (4) distributed at equal distances outside. Two sensor modules (5) are installed on the inner wall of one side of the support unit (2) by bolts. The unloading unit (6) is located above the support unit (2). A control unit (7) is installed on the outer wall of one side of the support unit (2) by bolts. The control unit (7) is electrically connected to the unloading unit (6), the weighing unit (1) and the sensor module (5) by wires respectively. One of the two sensor modules (5) is located on the left side of the unloading unit (6) and the other is located on the right side of the unloading unit (6).

2. The control system for a static weighing continuous conveying feeder according to claim 1, characterized in that: The weighing unit (1) is one of a weighbridge or a weighing sensor array.

3. The control system for a static weighing continuous conveying feeder according to claim 1, characterized in that: The support unit (2) is composed of multiple square tubes and two metal baffles welded together.

4. The control system for a static weighing continuous conveying feeder according to claim 1, characterized in that: The conveying unit (3) is a belt-type structure, specifically composed of an electric roller, a regular roller, multiple support rollers and a belt.

5. The control system for a static weighing continuous conveying feeder according to claim 1, characterized in that: The reflective unit (4) is one of reflective sticker or reflective plate, and the reflective unit (4) is glued to the conveying unit (3). Two adjacent reflective units (4) can form a material storage area.

6. The control system for a static weighing continuous conveying feeder according to claim 1, characterized in that: The sensor module (5) is an optical sensor, and the sensor module (5) is composed of an optical transmitter and an optical receiver. The unloading unit (6) is one of a star unloader or a vibrating feeder.

7. The control system for a static weighing continuous conveying feeder according to claim 1, characterized in that: The control unit (7) includes an operation panel, a display screen, a signal module, a PLC unit, and a frequency converter unit. The operation panel and the display screen are soldered onto the same circuit board.

8. The control system for a static weighing continuous conveying feeder according to claim 7, characterized in that: The signal module is either a Bluetooth or WiFi router. The PLC unit is an editable PLC controller, and the PLC unit is electrically connected to the operation panel, display screen, signal module, and frequency converter unit via wires. The frequency converter unit is a frequency converter, and the frequency converter mainly consists of a rectification, filtering, inversion, braking unit, drive unit, detection unit, and microprocessor unit.

9. The control system for a static weighing continuous conveying feeder according to claim 7, characterized in that: When the conveying unit (3) conveys materials, it transmits the rotation speed data to the PLC unit in the control unit (7). Then, the PLC unit controls the operation of the frequency converter in the control unit (7) to adjust the unloading flow rate of the unloading unit (6).

10. A method for operating a static weighing continuous conveying feeder, comprising the control system described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Start-up: The operation control unit (7) controls the conveying unit (3), weighing unit (1), sensor module (5) and unloading unit (6) to start up, so that the feeder can operate. S2. Sensing setting: As the conveying unit (3) moves, multiple reflective units (4) will also move. When one of the reflective units (4) passes the sensor module (5) on the left side of the unloading unit (6), the reflective unit (4) will reflect the light emitted by the sensor module (5), and then the reflected light will be received by the sensor module (5). Subsequently, the control unit (7) will control the unloading unit (6) to operate according to the detection result of the sensor module (5), so that the unloading unit (6) will start unloading. When the sensor module (5) on the right side of the unloading unit (6) detects another reflective unit (4), the unloading unit (6) will stop moving. Then, the amount of material unloaded by the unloading unit (6) will be determined according to the detection of the weighing unit (1), and then the speed of the conveying unit (3) and the unloading speed of the unloading unit (6) will be adjusted according to the amount, so that a certain amount of material is evenly spread in the storage area formed by the two adjacent reflective units (4). S3. Unloading and weighing: After S2 is adjusted, the control unit (7) can be operated to feed the material. During this process, when the unloading unit (6) unloads the material, the conveying unit (3) will carry the material and make the material falling from the unloading unit (6) spread on the conveying unit (3). During this process, the weighing unit (1) will weigh the material. When the weighing value reaches the set value, the unloading unit (6) will stop, and the conveying unit (3) will continue to operate. The unloading process will be repeated in step S3. As the conveying unit (3) transports the material, it will be moved out from the other end of the conveying unit (3).

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