Automatic weighing cotton blending equipment and control method

Abstract

The invention provides automatic weighing and cotton mixing equipment and a control method, a control system of the automatic weighing and cotton mixing equipment controls a feeding device, an opening device, an arc-shaped plate, a feeding door and a weighing hopper in a machine shell of the control system, and a cotton passing channel is defined by the feeding door, the opening device and the arc-shaped plate. A camera or / and a temporary storage cotton position sensor is / are arranged above or on the two sides of the fiber buffer area and used for detecting the amount of fibers cached in the fiber buffer area or the fiber stacking height. The control system is connected with the camera or / and the temporary cotton storage position sensor, the feeding device is controlled to start and stop according to the detected fiber amount or fiber stacking height, and after the weighing hopper is filled with the fibers and the feeding door is closed, the fibers continuously fed by the feeding device are temporarily stored in the fiber buffer area. On the premise that the spinning quality is met, the weighing efficiency and the yield of the weighing hopper are improved, and the equipment size or the occupied area does not need to be increased.

Description

Technical Field

[0001] This invention belongs to the field of textile machinery technology and relates to the improvement of weighing equipment for fibrous materials (such as cotton and chemical fibers), specifically an automatic weighing and mixing equipment and control method for cotton. Background Technology

[0002] With the need for differentiated spinning development in the textile industry, automatic weighing and blending equipment is being used more and more widely, and it has high weighing accuracy. Automatic weighing and blending equipment mostly adopts the weighing bucket principle, that is: the feeding device feeds the fiber into the weighing bucket → the weighing bucket reaches the set weight → the feeding device stops feeding → the weighing bucket opens to release material → the weighing bucket closes → the feeding device starts feeding again.

[0003] Existing automatic weighing and blending equipment typically involves a feeding device that feeds fibers from a storage bin. After being opened by an opening device, the fibers fall into a weighing hopper through a feeding gate (which is currently open). Once the weighing hopper reaches the set weight, the feeding device stops feeding fibers, the feeding gate closes, and the weighing hopper discharges. After discharge, the weighing hopper closes, and the feeding device restarts feeding fibers into the weighing hopper, repeating this process. Within each feeding cycle, from the time the set weight is reached in the weighing hopper to the discharge and then the hopper closing and feeding restarting, the feeding device cannot operate continuously.

[0004] In summary, although automatic weighing and blending equipment can basically meet the needs of differentiated spinning, the following problems still exist: 1. After the feeding device feeds the fiber into the weighing hopper to the set weight, the weighing hopper needs to be opened to release the material and then closed again. The feeding device cannot work during this process. Therefore, the weighing process is discontinuous, which restricts the improvement of equipment output.

[0005] 2. After each feeding from the weighing hopper, the fibers inside the hopper are emptied, and the feeding device needs to start feeding from zero. Due to the long feeding time, this has become a bottleneck restricting production efficiency.

[0006] 3. The weighing hopper has a limited capacity. If production efficiency is increased by expanding the volume of the weighing hopper, it will result in an increase in the size of the equipment and the floor space occupied, and may affect the stability of the weighing structure.

[0007] While ensuring spinning quality, the output of textile equipment is directly related to the production efficiency of textile mills. To address the above issues, how to design an automatic weighing and blending equipment and control method to improve the weighing efficiency and output of the weighing hopper without increasing the size or floor space of the equipment is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0008] To address the problems and shortcomings of existing technologies, this invention provides an automatic weighing and blending cotton equipment and control method that improves the weighing efficiency and output of the weighing hopper while meeting the requirements of spinning quality, without increasing the size of the equipment or the floor space required.

[0009] The objective of this invention is achieved through the following technical solution: An automatic weighing and blending cotton device includes a control system, a housing, and, from top to bottom, a feeding device, an opening device, an arc plate, a feeding gate, and a weighing hopper inside the housing. The control system controls the feeding device, the opening device, the feeding gate, and the weighing hopper. The feeding gate, the opening device, and the arc plate form a cotton passage. The cotton passage above the feeding gate serves as a fiber buffer zone. A camera and / or a temporary cotton level sensor are installed above or on both sides of the fiber buffer zone to detect the amount of fiber already buffered or the fiber accumulation height. The control system is connected to the camera and / or the temporary cotton level sensor and controls the feeding device to start and stop based on the detected amount of fiber or the fiber accumulation height. After the weighing hopper is filled with fiber and the feeding gate is closed, the fiber continuously fed by the feeding device is temporarily stored in the fiber buffer zone.

[0010] Improvements to the above technical solution: The control system includes a PLC controller, which includes a human-machine interface, a detection module, and a control module. The human-machine interface is used to input setting parameters to the detection module and display detection data. The control module automatically controls the start and stop of the feeding device based on the information received by the detection module from the camera or the temporary cotton level sensor.

[0011] Further improvement to the above technical solution: The temporary cotton position sensor includes an infrared transmitter and an infrared receiver, which are respectively disposed on opposite sides of the fiber buffer and located at the upper end of the fiber buffer.

[0012] Further improvements to the above technical solution: The camera is positioned above the fiber buffer zone, and the control system includes an alarm. When the image captured by the camera shows that the fiber accumulation height exceeds the warning height or an abnormality occurs in the fiber buffer zone, the camera sends the information to the detection module. The PLC controller controls the feeding device to stop working through the control module and triggers an alarm.

[0013] Further improvements to the above technical solution: The lower part of the fiber buffer is close to the feeding gate, and a cotton feeding roller is set in the upper part of the fiber buffer. The control system controls the cotton feeding roller to operate synchronously with the feeding device to control the fiber feeding into the fiber buffer, thereby further increasing the buffer capacity.

[0014] Further improvement to the above technical solution: The arc-shaped plate is provided with an exhaust mesh to reduce the impact of airflow on the fibers in the fiber buffer zone.

[0015] The present invention provides a control method for the above-mentioned automatic weighing and blending cotton equipment, characterized in that the control method includes the following steps: Step 1: The control system controls the feeding device to feed in the fiber, and after the fiber is opened by the opening device, it is output. At this time, the feeding gate opens for the first time, and the fiber falls into the weighing hopper through the feeding gate. Step 2: When the fiber in the weighing hopper reaches the set weight, the feeding door closes, the feeding device does not stop, but instead continues to feed the preset amount of fiber into the fiber buffer zone; the control system judges whether the weighing hopper is ready. If the weighing hopper is not ready, and the camera or temporary cotton level sensor detects that the fiber storage in the fiber buffer zone is full, the feeding device stops working. Step 3: After the weighing hopper has finished discharging and closed, and the weighing hopper is ready, the feeding gate will reopen. The fibers accumulated in the fiber buffer zone will fall into the weighing hopper first, and the feeding device will then add fibers to the weighing hopper to make up for the difference between the preset weight and the actual weight. Step 4: After step 3 is completed, repeat steps 2 to 3.

[0016] Improvement to the above technical solution: In step 2, if the image captured by the camera shows that the fiber accumulation height exceeds the warning height or an abnormality occurs in the fiber buffer zone, the camera sends the information to the detection module. The PLC controller controls the feeding device to stop working through the control module and triggers an alarm.

[0017] The advantages and positive effects of this invention compared with the prior art are: This invention incorporates a fiber buffer zone within the cotton passage between the feeding device and the feeding gate. During the discharging of the weighing hopper, the fiber buffer zone can hold a certain amount of fiber. Once the fiber in the weighing hopper reaches a set weight, the feeding device does not stop but continues to feed a preset amount of fiber into the fiber buffer zone. After the weighing hopper finishes discharging and closes, the feeding gate is opened, allowing the fiber accumulated in the fiber buffer zone to fall into the weighing hopper first. The feeding device only needs to replenish the remaining weight. This significantly shortens the effective feeding time for each weighing operation, achieving near-continuous feeding. It improves the weighing efficiency and output of the weighing hopper while maintaining spinning quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an automatic weighing and blending cotton device according to the present invention; Figure 2 This is a logic diagram of a control method for an automatic weighing and blending cotton device according to the present invention; Figure 3This is a block diagram of the control system in an automatic weighing and blending cotton device according to the present invention.

[0019] The following are the numbers in the diagram: 1. Feeding device; 2. Opening device; 3. Feeding gate; 4. Weighing hopper; 5. Fiber buffer zone; 6. Curved plate. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings: See Figures 1-3 An embodiment of an automatic weighing and blending cotton device of the present invention includes a control system, a housing, and, from top to bottom, a feeding device 1, an opening device 2, an arc plate 6, a feeding gate 3, and a weighing hopper 4 arranged sequentially inside the housing. The control system is used to control the feeding device 1, the opening device 2, the feeding gate 3, and the weighing hopper 4. The feeding gate 3, the opening device 2, and the arc plate 6 enclose a cotton passage, and the cotton passage above the feeding gate 3 serves as a fiber buffer zone 5. Figure 1 (The dashed box in the middle) Cameras and / or temporary cotton level sensors are installed above or on both sides of the fiber buffer 5 to detect the amount of fiber already buffered in the fiber buffer 5 or the fiber accumulation height. The control system is connected to the camera and / or temporary cotton level sensors and controls the start and stop of the feeding device according to the detected amount of fiber or fiber accumulation height. After the weighing hopper 4 is full of fiber and the feeding gate 3 is closed, the fiber continuously fed by the feeding device 1 is temporarily stored in the fiber buffer 5.

[0021] Furthermore, the above-mentioned control system includes a PLC controller, which includes a human-machine interface, a detection module, and a control module. The human-machine interface is used to input setting parameters to the detection module and display detection data. The control module automatically controls the feeding device 1 to start and stop based on the information received by the detection module from the camera or the temporary cotton level sensor.

[0022] Furthermore, the aforementioned temporary cotton position sensor includes an infrared transmitter and an infrared receiver, which are respectively disposed on opposite sides of the fiber buffer 5 and located at the upper end of the fiber buffer 5.

[0023] Furthermore, the aforementioned camera is positioned above the fiber buffer zone 5. The control system includes an alarm. When the image captured by the camera shows that the fiber accumulation height exceeds the warning height or an abnormality occurs within the fiber buffer zone 5, the camera sends the information to the detection module. The PLC controller controls the feeding device to stop working through the control module and triggers an alarm.

[0024] Furthermore, the lower part of the fiber buffer 5 is close to the feeding gate 3, and the upper part of the fiber buffer 5 is provided with a cotton feeding roller. The control system controls the cotton feeding roller to operate synchronously with the feeding device 1 to control the fiber feeding into the fiber buffer, thereby further increasing the buffer capacity.

[0025] Specifically: The aforementioned arc-shaped plate 6 is equipped with an exhaust mesh to reduce the impact of airflow on the fibers within the fiber buffer zone.

[0026] See Figures 1-3 An embodiment of the control method for the above-mentioned automatic weighing and blending cotton equipment according to the present invention includes the following steps: Step 1: The control system controls the feeding device to feed the fiber, and after the fiber is opened by the opening device, the fiber is output. At this time, the feeding gate 3 is opened for the first time, and the fiber falls into the weighing hopper 4 through the feeding gate 3. Step 2: When the fiber in the weighing hopper 4 reaches the set weight, the feeding gate 3 is closed, the feeding device 1 does not stop, but continues to feed the preset amount of fiber into the fiber buffer 5; the control system judges whether the weighing hopper 4 is ready. If the weighing hopper 4 is not ready, and the camera or temporary cotton level sensor detects that the fiber storage in the fiber buffer 5 is full, the feeding device 1 stops working. Step 3: After the weighing hopper 4 finishes discharging and closes, and the weighing hopper 4 is ready, the feeding gate 3 reopens, and the fibers accumulated in the fiber buffer zone 5 fall into the weighing hopper 4 first. Then the feeding device 1 replenishes the weighing hopper 4 with fibers that are insufficient to meet the preset weight difference. Step 4: After step 3 is completed, repeat steps 2 to 3.

[0027] Furthermore, in step 2 above, if the image captured by the camera shows that the fiber accumulation height exceeds the warning height or an abnormality occurs in the fiber buffer 5, the camera sends the information to the detection module, and the PLC controller controls the feeding device 1 to stop working through the control module and alarms through the alarm.

[0028] Of course, the above description is not intended to limit the invention, and the invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the invention should also be within the protection scope of the invention.

Claims

1. An automatic weighing and blending cotton device, comprising a control system, a housing, and, from top to bottom, a feeding device, an opening device, an arc-shaped plate, a feeding gate, and a weighing hopper inside the housing; the control system controls the feeding device, the opening device, the feeding gate, and the weighing hopper; the feeding gate, the opening device, and the arc-shaped plate together form a cotton passage, characterized in that... The cotton passage above the feeding gate serves as a fiber buffer. A camera and / or a temporary cotton level sensor are installed above or on both sides of the fiber buffer to detect the amount of fiber already buffered or the fiber accumulation height. The control system is connected to the camera and / or the temporary cotton level sensor and controls the start and stop of the feeding device according to the detected amount of fiber or the fiber accumulation height. After the weighing hopper is filled with fiber and the feeding gate is closed, the fiber continuously fed by the feeding device is temporarily stored in the fiber buffer.

2. The automatic weighing and blending cotton equipment according to claim 1, characterized in that, The control system includes a PLC controller, which includes a human-machine interface, a detection module, and a control module. The human-machine interface is used to input setting parameters to the detection module and display detection data. The control module automatically controls the start and stop of the feeding device based on the information received by the detection module from the camera or the temporary cotton level sensor.

3. The automatic weighing and blending equipment according to claim 1 or 2, characterized in that, The temporary cotton position sensor includes an infrared transmitter and an infrared receiver, which are respectively disposed on opposite sides of the fiber buffer and located at the upper end of the fiber buffer.

4. The automatic weighing and blending cotton equipment according to claim 1 or 2, characterized in that, The camera is positioned above the fiber buffer zone. The control system includes an alarm. When the image captured by the camera shows that the fiber accumulation height exceeds the warning height or an abnormality occurs in the fiber buffer zone, the camera sends the information to the detection module. The PLC controller controls the feeding device to stop working through the control module and triggers an alarm.

5. The automatic weighing and blending cotton equipment according to claim 3, characterized in that, The camera is positioned above the fiber buffer zone. The control system includes an alarm. When the image captured by the camera shows that the fiber accumulation height exceeds the warning height or an abnormality occurs in the fiber buffer zone, the camera sends the information to the detection module. The PLC controller controls the feeding device to stop working through the control module and triggers an alarm.

6. The automatic weighing and blending cotton equipment according to claim 1 or 2, characterized in that, The lower part of the fiber buffer is close to the feeding gate, and the upper part of the fiber buffer is provided with a cotton feeding roller. The control system controls the cotton feeding roller to operate synchronously with the feeding device to control the fiber feeding into the fiber buffer, thereby further increasing the buffer capacity.

7. The automatic weighing and blending cotton equipment according to claim 3, characterized in that, The lower part of the fiber buffer is close to the feeding gate, and the upper part of the fiber buffer is provided with a cotton feeding roller. The control system controls the cotton feeding roller to operate synchronously with the feeding device to control the fiber feeding into the fiber buffer, thereby further increasing the buffer capacity.

8. The automatic weighing and blending cotton equipment according to claim 1 or 2, characterized in that, The curved plate is equipped with exhaust mesh to reduce the impact of airflow on the fibers in the fiber buffer zone.

9. The control method for the automatic weighing and blending cotton equipment according to any one of claims 1-8, characterized in that, The control method includes the following steps: Step 1: The control system controls the feeding device to feed in the fiber, and after the fiber is opened by the opening device, it is output. At this time, the feeding gate opens for the first time, and the fiber falls into the weighing hopper through the feeding gate. Step 2: When the fiber in the weighing hopper reaches the set weight, the feeding door closes, the feeding device does not stop, but instead continues to feed the preset amount of fiber into the fiber buffer zone; the control system judges whether the weighing hopper is ready. If the weighing hopper is not ready, and the camera or temporary cotton level sensor detects that the fiber storage in the fiber buffer zone is full, the feeding device stops working. Step 3: After the weighing hopper has finished discharging and closed, and the weighing hopper is ready, the feeding gate will reopen. The fibers accumulated in the fiber buffer zone will fall into the weighing hopper first, and the feeding device will then add fibers to the weighing hopper to make up for the difference between the preset weight and the actual weight. Step 4: After step 3 is completed, repeat steps 2 to 3.

10. The control method for the automatic weighing and blending cotton equipment according to claim 9, characterized in that, In step 2, if the image captured by the camera shows that the fiber accumulation height exceeds the warning height or an abnormality occurs in the fiber buffer zone, the camera sends the information to the detection module. The PLC controller controls the feeding device to stop working through the control module and triggers an alarm.

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