A fiber raw material batching metering control system and method suitable for water-jet non-woven fabric production

Abstract

The application discloses a fiber raw material batching metering control system and method suitable for water-jet non-woven fabric production and belongs to the technical field of water-jet non-woven fabric. Based on an existing opening system, the feeding speed of each opening machine is kept relatively constant by automatically adjusting the angle nail curtain speed; the accuracy of weighing is ensured by automatically adjusting the pre-stopping weight; and a closed-loop control mode is adopted, so that the parameters involved are automatically calculated according to the actual environment by a control algorithm, without manual debugging. Finally, the accuracy of fiber raw material batching metering is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of fiber raw material batching metering control system and method, especially a kind of fiber raw material batching metering control system and method suitable for spunlace nonwoven production, belong to spunlace nonwoven technical field. BACKGROUND

[0002] Spunlace nonwoven, with fiber as raw material, is formed after opening mixing, carding, laying, drawing, water jet, drying and winding. At present, the mainstream spunlace nonwoven processing process is as follows: 1. Fiber opening: the fiber raw material is quantitatively opened and mixed; 2. Fiber web forming: carding, air laying, wet laying; 3. Fiber web laying: cross-laying or parallel-laying (two comb half-cross-laying, two comb full-cross-laying, two comb parallel-laying); 4. Fiber web consolidation: the fiber web is entangled by high-pressure water needles from top and bottom; 5. Fiber cloth dewatering: vacuum suction is performed to dewater the cloth surface; 6. Fiber cloth drying: hot air penetration or cylinder drying.

[0003] In the production process of spunlace nonwoven, different raw materials need to be mixed in a certain proportion, and in order to accurately control the proportion, the input quantity needs to be accurately controlled. At present, the mainstream scheme is to install a weighing sensor on the unpacking machine. After the raw material is unpacked by the worker, it is placed on the conveying curtain and conveyed to the angle nail curtain. The angle nail curtain hooks the raw material and conveys it upward. The raw material with too large volume is torn and scattered by the even cotton beater and falls back to the conveying curtain. The raw material with small volume passes through the even cotton beater smoothly and is completely stripped by the rear stripping beater and fed into the hopper. When the weight of the raw material in the hopper (weighed by the weighing sensor) reaches the set value, the cotton feeding is stopped, and the other unpacking machines are waited. When all the unpacking machines are weighed, the raw material is dropped into the coarse opening machine, and the mixing work is completed by the coarse opening machine.

[0004] At present, for the unpacking machine using this working mode, some raw materials will inevitably enter the hopper during the stop feeding process, causing overshoot, and ultimately leading to the actual weighed raw material being higher than the set value, which affects the subsequent process and the quality of spunlace nonwoven. In order to solve this problem, an "advance stop weight" is set, so that the current weight value has not reached the set value when the stop feeding operation starts, thereby compensating for this part of the influence. However, in actual production, the weight of the raw material fed additionally after stopping feeding is affected by many factors, including the degree of raw material hooking, the amount of raw material accumulation on the conveying curtain, and the distance between the even cotton beater and the angle nail curtain. Therefore, using a single parameter cannot guarantee the accuracy of the weighing, and the parameter should be adjusted in real time according to the actual situation.

[0005] Although the prior art CN110782179A discloses "a digital production system of polylactic acid spunlace non-woven fabric", but it mainly solves the problem that the market still lacks modern polylactic acid spunlace non-woven fabric production system, and polylactic acid fiber spunlace non-woven fabric still has problems such as low production efficiency, unguaranteed product quality and high production cost. CN210592842U discloses a non-woven fabric production opening machine capable of controlling the amount of fiber raw material poured out, wherein the accuracy of the proportioning is ensured by slowly opening the discharge port and slowly falling of the fiber raw material, but it cannot be poured out from the inside of the discharge box at one time; CN218777832U discloses "an opening machine with automatic weighing function", but it mainly solves the problem of low work efficiency caused by manual placement of the pressed block of non-woven fabric;

[0006] Therefore, a fiber raw material proportioning and metering control system and method for spunlace non-woven fabric production are needed to improve the accuracy of the raw material mixing ratio and ultimately ensure the stability of the spunlace non-woven fabric production process and improve the product quality. SUMMARY

[0007] In order to solve the problems of the prior art, a fiber raw material proportioning and metering control system and method suitable for spunlace non-woven fabric production are proposed. Based on the existing opening system, the feeding speed of each opening machine is kept relatively constant by automatically adjusting the speed of the angle nail curtain; the accuracy of the weighing is ensured by automatically adjusting the pre-stopping weight; and a closed-loop control method is adopted, so that the parameters involved are automatically calculated by the control algorithm according to the actual environment, without the need for manual debugging, and finally the accuracy of the fiber raw material proportioning and metering is ensured.

[0008] In order to achieve the above technical purpose, the following technical scheme is proposed:

[0009] The first purpose of the technical scheme is to provide a fiber raw material proportioning and metering control system suitable for spunlace non-woven fabric production, which is arranged in a fiber raw material opening machine. The fiber raw material opening machine includes a conveying curtain, an angle nail curtain and a hopper. The conveying curtain is arranged in front of the working position of the angle nail curtain, and the hopper is arranged behind the working position of the angle nail curtain. The angle nail curtain is arranged obliquely upward. A cotton equalizing beater is arranged on one side of the angle nail curtain, and a cotton stripping beater is arranged on the other side of the angle nail curtain. An activity door is arranged in the discharge port of the hopper, and a coarse opening cotton machine is arranged behind the working position of the hopper.

[0010] The fiber raw material proportioning and metering control system includes a controller, a motor I for driving the operation of the angle nail curtain, a motor II for driving the operation of the conveying curtain, a photoelectric switch arranged on the observation window of the angle nail curtain, a weighing sensor arranged on the hopper and an electromagnetic valve for controlling the discharge of the material.

[0011] The controller comprises a sequence control unit, a human-computer interaction unit, a corner pin curtain speed control unit, a conveying curtain stop control unit, a weight analysis unit and a material dropping control unit, the sequence control unit is connected with the human-computer interaction unit, the sequence control unit is connected with the corner pin curtain speed control unit, the sequence control unit is connected with the conveying curtain stop control unit, the sequence control unit is connected with the weight analysis unit, and the sequence control unit is connected with the material dropping control unit; the human-computer interaction unit is connected with the corner pin curtain speed control unit, the human-computer interaction unit is connected with the conveying curtain stop control unit, the human-computer interaction unit is connected with the weight analysis unit, and the human-computer interaction unit is connected with the material dropping control unit;

[0012] The motor I is provided with a frequency converter I, and the frequency converter I is connected with the corner pin curtain speed control unit through an electrical signal. The corner pin curtain is driven by the motor I, the motor I is connected with the frequency converter I, and the speed of the corner pin curtain is adjusted through the frequency converter I; the frequency converter I is connected with the corner pin curtain speed control unit in the controller, the corner pin curtain speed control unit calculates the time length from starting to stopping of the corner pin curtain through a built-in timer, and the time length is defined as “loading time”; the corner pin curtain speed control unit adjusts the frequency setting value of the frequency converter I according to the loading time, so as to control the speed of the corner pin curtain;

[0013] The motor II is provided with a frequency converter II, and the frequency converter II is connected with the conveying curtain stop control unit through an electrical signal. The conveying curtain is driven by the motor II, the motor II is connected with the frequency converter II, and the operation of the conveying curtain is adjusted through the frequency converter II; the frequency converter II is connected with the conveying curtain stop control unit in the controller, and the photoelectric switch is connected with the conveying curtain stop control unit through an electrical signal. When the fiber raw material conveyed on the conveying curtain reaches the position of the corner pin curtain, the photoelectric switch is triggered, the conveying curtain stop control unit receives the electrical signal of the photoelectric switch, then the motor II is controlled through the frequency converter II, and finally the conveying curtain is controlled to stop, and the corner pin curtain starts to convey the fiber raw material;

[0014] The weighing sensor is connected with the weight analysis unit through an electrical signal. The weighing sensor is used for monitoring the current weight (W 当前 ) of the fiber raw material in the hopper in real time;

[0015] The movable door is controlled to open and close by the air cylinder, the air cylinder is connected with the electromagnetic valve through an air source pipe, and the electromagnetic valve is connected with the material dropping control unit through an electrical signal.

[0016] The working process includes:

[0017] “Calculate the actual parking weight”: the weight analysis unit calculates the actual parking weight (W 停车 ) of the current weighing, W 停车 =W 目标 +W 总偏差（n） (n is the weighing round, and n=1 when the first weighing is performed);

[0018] "Feeding": the angle pin curtain speed control unit controls the frequency converter I to start the motor I. The current weight (W 当前 ) of the fiber raw material in the hopper is collected in real time by the weighing sensor installed at the hopper and fed back to the weight analysis unit; when W 当前 ≥ W 停车 , the angle pin curtain speed control unit controls the frequency converter I to stop the motor I, and enters the "feeding complete" step;

[0019] "Feeding complete": the controller judges the current stage of the fiber raw material unpacking machine, and when all the fiber raw material unpacking machines are in the "feeding complete" step, it enters the "calculating deviation weight and total deviation weight" step;

[0020] "Calculating deviation weight and total deviation weight": the weight analysis unit calculates the deviation weight (W 偏差 ) and the deviation weight cumulative value (W 总偏差 ) of this weighing, W 偏差 = W 目标 -W 当前 , W 总偏差(n+1) =W 总偏差（n） +W 偏差 (n is the weighing round, n=1 for the first weighing round);

[0021] "Discharging": the discharging control unit sends the cotton discharging instruction to the fiber raw material unpacking machine, and the electromagnetic valve in the fiber raw material unpacking machine receives the cotton discharging instruction, then opens the movable door through the cylinder to complete the discharging. After the discharging is completed, it re-enters the "calculating actual parking weight" step to circulate.

[0022] Further, the fiber raw material batching and metering control system further comprises an audible and visual alarm for prompting, and the controller further comprises a warning unit, which is connected with the sequence control unit, connected with the human-computer interaction unit, and connected with the audible and visual alarm.

[0023] Further, the human-computer interaction unit is connected with a touch screen, and an operator can set a target weight (W 目标 ) and start the device by means of the touch screen; after the device is started, the controller will guide the fiber raw material unpacking machine to perform the cycle operation of "calculating actual parking weight" (completed by the weight analysis unit) → "feeding" (completed by the conveying curtain stop control unit and the angle pin curtain speed control unit) → "feeding complete" → "calculating deviation weight and total deviation weight" (completed by the weight analysis unit) → "discharging", until the operator issues a stop instruction on the touch screen.

[0024] Further, the angle nail curtain speed control unit comprises a frequency converter I operation frequency receiving module, a timer, a feeding time calculation module and a frequency converter I operation frequency communication module, the frequency converter I operation frequency receiving module is connected with the frequency converter I, the frequency converter I operation frequency receiving module is also connected with the feeding time calculation module, and the timer is connected with the feeding time calculation module; the feeding time calculation module is connected with the frequency converter I operation frequency communication module, and the frequency converter I operation frequency communication module is connected with the frequency converter I;

[0025] The frequency converter I operation frequency receiving module is used for monitoring the operation state of the frequency converter I, that is, receiving the operation frequency feedback from the frequency converter I.

[0026] The timer is used for calculating the time length from starting to stopping of the angle nail curtain, that is, the time length is the feeding time.

[0027] The feeding time calculation module is used for adjusting the frequency setting value of the frequency converter I in combination with the operation frequency feedback of the frequency converter I and the feeding time, and conveying the instruction to the frequency converter I operation frequency communication module.

[0028] The frequency converter I operation frequency communication module conveys the adjusted frequency converter I operation frequency instruction to the frequency converter I, that is, controls the speed of the angle nail curtain.

[0029] Further, the conveying curtain stopping control unit comprises a photoelectric switch signal receiving module, a stopping operation analysis module and a frequency converter II operation frequency communication module, the photoelectric switch signal receiving module is connected with the photoelectric switch, the photoelectric switch signal receiving module is also connected with the stopping operation analysis module, the stopping operation analysis module is connected with the frequency converter II operation frequency communication module, and the frequency converter II operation frequency communication module is connected with the frequency converter II.

[0030] The photoelectric switch signal receiving module is used for monitoring the position of the fiber raw material, that is, receiving the information feedback from the photoelectric switch.

[0031] The stopping operation analysis module is used for analyzing the position of the fiber raw material, and sending the instruction of stopping the conveying curtain transportation to the frequency converter II through the frequency converter II operation frequency communication module.

[0032] The frequency converter II operation frequency communication module receives and conveys the instruction of stopping the conveying curtain operation.

[0033] The second purpose of the technical scheme is to provide a fiber raw material batching metering control method suitable for water jet non-woven fabric production, which comprises angle nail curtain speed control.

[0034] S1, the feeding time (T / s) is counted.

[0035] The feeding time specifically refers to that the angle pin curtain speed control unit calculates the time length from starting to stopping of the angle pin curtain by using the built-in timer, and the time length is the feeding time;

[0036] S2 compares the feeding time in step S1 with the pre-set optimal feeding time, and adjusts the speed of the angle pin curtain according to the difference degree; specifically including the following:

[0037] If the feeding time is 0<T≤5s, the feeding speed of the angle pin curtain is too fast, and the speed of the angle pin curtain is reduced by 2Hz (wherein Hz is the frequency unit, the frequency converter I controls the rotating speed of the motor I by controlling the output frequency, and therefore, can be directly used as a physical quantity reflecting the rotating speed of the motor I) ;

[0038] If the feeding time is 5<T≤10s, the feeding speed of the angle pin curtain is relatively fast, and the speed of the angle pin curtain is reduced by 1Hz;

[0039] If the feeding time is 10<T≤15s, the feeding speed of the angle pin curtain is suitable; the speed of the angle pin curtain is kept unchanged;

[0040] If the feeding time is 15<T≤20s, the feeding speed of the angle pin curtain is relatively slow, and the speed of the angle pin curtain is increased by 1Hz;

[0041] If the feeding time is 20<T≤50s, the feeding speed of the angle pin curtain is too slow, and the speed of the angle pin curtain is increased by 2Hz;

[0042] If the feeding time is >50s, the feeding of the angle pin curtain is abnormal, the speed of the angle pin curtain is kept unchanged, and an alarm is given. Further, the feeding speed of each bale opener is basically kept constant.

[0043] Further, the fiber raw material batching and metering control method further includes the control of the pre-stopping weight:

[0044] X1 sets the weighing target value W 目标 , and starts the fiber raw material bale opener;

[0045] X2 calculates the stopping weight W 停车 , wherein W 停车 =W 目标 +W 总偏差(n) (n is the weighing round, and n=1 when the first weighing is performed)

[0046] X3 starts the motor I and starts feeding;

[0047] X4 judges the relationship between the current weight W 当前 of the fiber raw material and W 停车 ;

[0048] If W 当前 ≥W 停车If the time is up, the motor I is stopped, and the subsequent feeding completion step is entered;

[0049] If not, the motor I is controlled to continue feeding.

[0050] X5 determines whether all the fiber raw material unpacking machines participating in the fiber raw material batching have completed feeding.

[0051] If any fiber raw material unpacking machine is not in the feeding completion step, waiting is continued.

[0052] If all the fiber raw material unpacking machines are in the feeding completion step, the subsequent deviation calculation program is entered.

[0053] X6 calculates the deviation weight W 偏差 , wherein W 偏差 = W 目标 -W 当前 ; the total deviation weight W 总偏差 is calculated, wherein W 总偏差(n+1) =W 总偏差（n） +W 偏差 (n is the weighing round, and n=1 when the first weighing round is performed).

[0054] X7 sends the cotton falling instruction to the fiber raw material unpacking machine, waits for 8 seconds, and returns to step X2.

[0055] The third object of the technical solution is to provide a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is executed by a processor to realize the control method.

[0056] The fourth object of the technical solution is to provide an information data processing terminal suitable for the fiber raw material batching and metering control method for spunlace non-woven fabric production.

[0057] In the technical solution, the positional relationships such as “middle”, “front side of the station”, “rear side of the station”, “obliquely upward”, “one side”, “the other side”, and “inner” are defined according to the actual use state and are conventional terms in the technical field and in the actual use process of the person skilled in the art.

[0058] In the description of the technical solution, it should be noted that, unless otherwise specified and limited, the “setting” and “connection” should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] The technical scheme has the beneficial effects of:

[0060] The application provides a fiber raw material batching metering control system and method suitable for water-jet non-woven fabric production.

[0061] The closed-loop control mode is adopted, so that the parameters involved are automatically calculated by the control algorithm according to the actual environment, without human adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0062] Figure 1 The figure is a structural schematic diagram of the fiber raw material unpacking machine involved in the application.

[0063] Figure 2 The figure is a logic connection block diagram of the control system in the application.

[0064] Figure 3 The figure is a structural block diagram of the controller in the application.

[0065] Figure 4 The figure is a working principle diagram of the angle nail curtain speed control unit in the controller in the application.

[0066] Figure 5 The figure is a working principle diagram of the conveyor curtain stop control unit in the controller in the application.

[0067] Figure 6 The figure is a control logic diagram of the angle nail curtain speed in the application.

[0068] Figure 7 The figure is a logic control diagram of the advance parking weight in the application.

[0069] In the figure, 1 is a conveyor curtain, 2 is an angle nail curtain, 3 is a hopper, 4 is a cotton uniform beater, 5 is a cotton stripping beater, 6 is a weighing sensor, and 7 is a coarse cotton opener.

[0070] 8. Controller; 81. Sequence Control Unit; 82. Human-Machine Interaction Unit; 83. Corner Nail Curtain Speed ​​Control Unit; 831. Variable Frequency Drive (VFD) I Operating Frequency Receiving Module; 832. Timer; 833. Feeding Time Calculation Module; 834. VFD I Operating Frequency Communication Module; 84. Conveyor Curtain Stop Control Unit; 841. Photoelectric Switch Signal Receiving Module; 842. Stop Operation Analysis Module; 843. VFD II Operating Frequency Communication Module; 85. Weight Analysis Unit; 86. Material Discharge Control Unit; 87. Early Warning Unit; 9. Motor I; 10. Motor II; 11. Photoelectric Switch; 12. Solenoid Valve; 13. VFD I; 14. VFD II; 15. Audible and Visual Alarm; 16. Cylinder. Detailed Implementation

[0071] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0072] Example 1

[0073] This embodiment provides: a fiber raw material metering and control system suitable for spunlace nonwoven fabric production, installed in the fiber raw material unpacking machine, such as... Figure 1 As shown, the fiber raw material unpacking machine includes a conveyor curtain 1, a corner nail curtain 2, and a hopper 3. The conveyor curtain 1 is located in front of the corner nail curtain 2, and the hopper 3 is located behind the corner nail curtain 2. The corner nail curtain 2 is arranged obliquely upward. A cotton leveling beater 4 is provided on one side of the corner nail curtain 2, and a cotton stripping beater 5 is provided on the other side of the corner nail curtain 2. A movable door is fitted inside the discharge port of the hopper 3, and a coarse cotton opener 7 is provided behind the hopper 3.

[0074] like Figure 2 As shown, the fiber raw material batching and metering control system includes a controller 8, a motor I 9 that drives the corner nail curtain 2, a motor II 10 that drives the conveyor curtain 1, a photoelectric switch 11 located in the observation window of the corner nail curtain 2, a weighing sensor 6 located on the hopper 3, and a solenoid valve 12 for controlling the material discharge; a frequency converter I 13 is installed on the motor I 9, and the frequency converter I 13 is connected to the controller 8 via an electrical signal; a frequency converter II 14 is installed on the motor II 10, and the frequency converter II 14 is connected to the controller 8 via an electrical signal; a cylinder 16 is connected to the solenoid valve 12 via an air supply pipe, and the solenoid valve 12 is connected to the controller 8 via an electrical signal; the photoelectric switch 11 and the weighing sensor 6 are both connected to the controller 8 via electrical signals.

[0075] Based on the existing opening package system, through the setting of the controller 8, the motor I 9, the motor II 10, the photoelectric switch 11, the weighing sensor 6, the electromagnetic valve 12, the frequency converter I 13 and the frequency converter II 14, the running speed of the angle nail curtain 2 is adjusted, the running of the conveying curtain 1 is controlled to stop, the opening and closing of the movable door is controlled, etc. For multiple fiber raw material opening machines, the speed of the angle nail curtain 2 is automatically adjusted to keep the feeding speed of each opening machine relatively constant; the automatic adjustment of the pre-stopping weight is used to ensure the accuracy of weighing; and the closed-loop control mode is used, so that the parameters involved are automatically calculated by the control algorithm according to the actual environment, without manual debugging, and finally the accuracy of the fiber raw material batching and metering is ensured.

[0076] Embodiment 2

[0077] On the basis of embodiment 1, the controller 8 is further limited in this embodiment to further illustrate the technical solution.

[0078] As shown in Figure 3 , the controller 8 includes a sequence control unit 81, a man-machine interaction unit 82, an angle nail curtain speed control unit 83, a conveying curtain stop control unit 84, a weight analysis unit 85 and a material falling control unit 86. The sequence control unit 81 is connected with the man-machine interaction unit 82, the sequence control unit 81 is connected with the angle nail curtain speed control unit 83, the sequence control unit 81 is connected with the conveying curtain stop control unit 84, the sequence control unit 81 is connected with the weight analysis unit 85, and the sequence control unit 81 is connected with the material falling control unit 86. The man-machine interaction unit 82 is connected with the angle nail curtain speed control unit 83, the man-machine interaction unit 82 is connected with the conveying curtain stop control unit 84, the man-machine interaction unit 82 is connected with the weight analysis unit 85, and the man-machine interaction unit 82 is connected with the material falling control unit 86.

[0079] The motor I 9 is provided with the frequency converter I 13, and the frequency converter I 13 is connected with the angle nail curtain speed control unit 83 through electrical signal. Among them, the angle nail curtain 2 is driven by the motor I 9, the motor I 9 is connected with the frequency converter I 13, and the speed of the angle nail curtain 2 is adjusted through the frequency converter I 13; the frequency converter I 13 is connected with the angle nail curtain speed control unit 83 in the controller 8, and the angle nail curtain speed control unit 83 calculates the time length from the start to the stop of the angle nail curtain 2 through the built-in timer 832, which is defined as "feeding time"; the angle nail curtain speed control unit 83 adjusts the frequency setting value of the frequency converter I 13 according to the feeding time to control the speed of the angle nail curtain 2;

[0080] The motor II 10 is provided with a frequency converter II 14, and the frequency converter II 14 is connected with the conveying curtain stop control unit 84 through electrical signals. The conveying curtain 1 is driven by the motor II 10, the motor II 10 is connected with the frequency converter II 14, and the operation of the conveying curtain 1 is adjusted through the frequency converter II 14; the frequency converter II 14 is connected with the conveying curtain stop control unit 84 in the controller 8, and the photoelectric switch 11 is connected with the conveying curtain stop control unit 84 through electrical signals. When the fiber raw materials on the conveying curtain 1 reach the position of the gimp curtain 2, the photoelectric switch 11 is triggered, the conveying curtain stop control unit 84 receives the electrical signal of the photoelectric switch 11, then the motor II 10 is controlled through the frequency converter II 14, and finally the conveying curtain 1 is controlled to stop, and the gimp curtain 2 starts to convey the fiber raw materials;

[0081] The weighing sensor is connected with the weight analysis unit through electrical signals. The weighing sensor is used to monitor the current weight (W 当前 ) of the fiber raw materials in the hopper in real time.

[0082] The movable door is controlled to open and close by the air cylinder, the air cylinder is connected with the electromagnetic valve through the air source pipe, and the electromagnetic valve is connected with the material dropping control unit through electrical signals.

[0083] The working process includes:

[0084] “Calculate the actual parking weight”: the weight analysis unit calculates the actual parking weight (W 停车 ) of the current weighing, W 停车 =W 目标 +W 总偏差（n） (n is the weighing round, n=1 when the first weighing is performed);

[0085] “Feeding”: the gimp curtain speed control unit controls the frequency converter I to start the motor I. The current weight (W 当前 ) of the fiber raw materials in the hopper is collected in real time by the weighing sensor installed at the hopper and is fed back to the weight analysis unit; when W 当前 ≥W 停车 , the gimp curtain speed control unit controls the frequency converter I to stop the motor I, and the “feeding completion” step is entered;

[0086] “Feeding completion”: the controller judges the current stage of all fiber raw material unpacking machines, and when all fiber raw material unpacking machines are in the “feeding completion” step, the “calculate the deviation weight and total deviation weight” step is entered;

[0087] “Calculate the deviation weight and total deviation weight”: the weight analysis unit calculates the deviation weight (W 偏差 ) of the current weighing and the accumulated value of the deviation weight (W 总偏差 ), W 偏差 =W 目标 -W 当前 , W总偏差(n+1) = W 总偏差（n） + W 偏差 (n is the weighing round, the first weighing n = 1);

[0088] "Material falling": the material falling control unit sends the cotton falling instruction to the fiber raw material unpacking machine. After the electromagnetic valve in the fiber raw material unpacking machine receives the cotton falling instruction, the active door is opened through the cylinder control to complete the material falling. After the material falling is completed, the "actual parking weight calculation" step is re-entered to form a cycle.

[0089] Example 3

[0090] On the basis of examples 1-2, this embodiment further limits the corner pin curtain speed control unit 83 to further illustrate the technical solution.

[0091] As shown in Figure 4 , the corner pin curtain speed control unit 83 includes a frequency converter I operation frequency receiving module 831, a timer 832, a feeding time calculation module 833, and a frequency converter I operation frequency communication module 834. The frequency converter I operation frequency receiving module 831 is connected with the frequency converter I 13, and the frequency converter I operation frequency receiving module 831 is also connected with the feeding time calculation module 833. The timer 832 is connected with the feeding time calculation module 833. The feeding time calculation module 833 is connected with the frequency converter I operation frequency communication module 834, and the frequency converter I operation frequency communication module 834 is connected with the frequency converter I 13.

[0092] Among them, the frequency converter I operation frequency receiving module 831 is used to receive the operation frequency feedback from the frequency converter I 13 to monitor the operation state of the frequency converter I 13.

[0093] The timer 832 is used to calculate the duration from the start to the stop of the corner pin curtain 2, that is, the duration is the feeding time.

[0094] The feeding time calculation module 833 is used to adjust the frequency setting value of the frequency converter I 13 in combination with the operation frequency feedback of the frequency converter I 13 and the feeding time, and to convey the instruction to the frequency converter I operation frequency communication module 834.

[0095] The frequency converter I operation frequency communication module 834 is used to give the frequency converter I 13 the adjusted frequency converter I 13 operation frequency instruction, that is, to control the speed of the corner pin curtain 2.

[0096] Example 4

[0097] On the basis of examples 1-3, this embodiment further limits the conveying curtain stop control unit 84 to further illustrate the technical solution.

[0098] As shown in Figure 5As shown, the conveying curtain stop control unit 84 includes a photoelectric switch signal receiving module 841, a stop operation analysis module 842, and a frequency converter II operation frequency communication module 843. The photoelectric switch signal receiving module 841 is connected with the photoelectric switch 11, and is also connected with the stop operation analysis module 842. The stop operation analysis module 842 is connected with the frequency converter II operation frequency communication module 843. The frequency converter II operation frequency communication module 843 is connected with the frequency converter II 14.

[0099] The photoelectric switch signal receiving module 841 is configured to receive information fed back from the photoelectric switch 11, and monitor the position of the fiber raw material.

[0100] The stop operation analysis module 842 is configured to analyze the position of the fiber raw material, issue an instruction to stop the transportation of the conveying curtain 1, and convey the instruction to the frequency converter II operation frequency communication module 843.

[0101] The frequency converter II operation frequency communication module 843 is configured to receive and convey the instruction to stop the operation of the conveying curtain 1, and control the conveying curtain 1 to stop.

[0102] Embodiment 5

[0103] Based on the embodiments 1-4, in order to timely feedback the raw material batching and metering situation to the staff, and prompt the real-time working condition, the present embodiment further limits that:

[0104] The fiber raw material batching and metering control system further comprises an audible and visual alarm 15 for prompting. The controller 8 further comprises a pre-warning unit 87, which is connected with the man-machine interaction unit 82, and is connected with the audible and visual alarm 15.

[0105] The man-machine interaction unit 82 is connected with a touch screen. The operator can set the target weight (W 目标 ) and start the equipment by means of the touch screen. After the equipment is started, the controller will guide the fiber raw material unpacking machine to perform the cyclic operation of “calculating the actual parking weight” (completed by the weight analysis unit) → “feeding” (completed by the joint of the conveying curtain stop control unit and the angle nail curtain speed control unit) → “feeding completion” → “calculating the deviation weight and the total deviation weight” (completed by the weight analysis unit) → “discharging”, until the operator issues a stop instruction on the touch screen.

[0106] Embodiment 6

[0107] The present embodiment provides a fiber raw material batching and metering control method suitable for the production of spunlace non-woven fabric, as shown in the following: Figure 6 The method comprises the control of the angle nail curtain speed:

[0108] S1: Statistics of feeding time (T / s);

[0109] The feeding time is specifically the time calculated by the angle pin curtain speed control unit using the built-in timer from the start to the stop of the angle pin curtain, i.e., the "feeding time";

[0110] S2 compares the feeding time in step S1 with the pre-set optimal feeding time, and adjusts the speed of the angle pin curtain according to the difference; specifically including the following:

[0111] If the feeding time is 0<T≤5s, the feeding speed of the angle pin curtain is too fast, and the speed of the angle pin curtain is reduced by 2Hz (where Hz is the frequency unit, and the frequency converter I controls the speed of the motor I by controlling the output frequency, so it can be directly used as a physical quantity reflecting the speed of the motor I) ;

[0112] If the feeding time is 5<T≤10s, the feeding speed of the angle pin curtain is relatively fast, and the speed of the angle pin curtain is reduced by 1Hz;

[0113] If the feeding time is 10<T≤15s, the feeding speed of the angle pin curtain is suitable; the speed of the angle pin curtain is kept unchanged;

[0114] If the feeding time is 15<T≤20s, the feeding speed of the angle pin curtain is relatively slow, and the speed of the angle pin curtain is increased by 1Hz;

[0115] If the feeding time is 20<T≤50s, the feeding speed of the angle pin curtain is too slow, and the speed of the angle pin curtain is increased by 2Hz;

[0116] If the feeding time is >50s, the feeding of the angle pin curtain is abnormal, the speed of the angle pin curtain is kept unchanged, and an alarm is given. Thus, the feeding speed of each bale opener is basically kept constant.

[0117] Example 7

[0118] On the basis of example 6, this example also controls the pre-stop weight, as shown in the following table: Figure 7 Specifically including:

[0119] X1 sets the weighing target value W 目标 , and starts the fiber raw material bale opener;

[0120] X2 calculates the stop weight W 停车 , wherein W 停车 =W 目标 +W 总偏差(n) (n is the weighing round, and n=1 for the first weighing round)

[0121] X3 starts the motor I and starts feeding;

[0122] X4 judges the relationship between the current weight W 当前 of the fiber raw material and W 停车 ;

[0123] If W 当前 ≥ W 停车 , then stop motor I, and enter the subsequent feeding completion step;

[0124] Otherwise, control motor I to continue feeding;

[0125] X5 judges whether all the fiber raw material unpacking machines participating in the fiber raw material batching have completed feeding;

[0126] If any fiber raw material unpacking machine is not in the feeding completion step, continue to wait;

[0127] If all the fiber raw material unpacking machines are in the feeding completion step, enter the subsequent deviation calculation program;

[0128] X6 calculates the deviation weight W 偏差 , wherein W 偏差 = W 目标 -W 当前 ; and calculates the total deviation weight W 总偏差 , wherein W 总偏差(n+1) = W 总偏差（n） +W 偏差 (n is the weighing round, and n = 1 when the first weighing round);

[0129] X7 sends the cotton shedding instruction to the fiber raw material unpacking machine, waits for 8 seconds, and returns to step X2.

[0130] Embodiment 8

[0131] The embodiment provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is executed by a processor to implement the control method.

[0132] Embodiment 9

[0133] The embodiment provides an information data processing terminal of a fiber raw material batching metering control method suitable for spunlace non-woven fabric production.

[0134] Embodiment 10

[0135] The embodiment combines an actual production line and serves as another implementation manner to provide a fiber raw material batching metering control system suitable for spunlace non-woven fabric production, which is arranged in a fiber raw material unpacking machine and includes a controller, a motor I for driving an angle nail curtain to operate, a motor II for driving a conveying curtain to operate, a photoelectric switch arranged at an observation window of the angle nail curtain, a weighing sensor arranged on a hopper, and an electromagnetic valve for controlling material shedding; and the specific construction includes:

[0136] Step 1, connecting elements in the system

[0137] Motor I and frequency converter I are connected by electrical signal, frequency converter I provides power to motor I and controls the speed; frequency converter I and angle nail curtain speed control unit are connected by electrical signal, frequency converter I transmits running state signal and frequency feedback signal to angle nail curtain speed control unit, angle nail curtain speed control unit transmits motor enable signal and frequency given signal to frequency converter I; motor II and frequency converter II are connected by electrical signal, frequency converter II provides power to motor II and controls the speed; frequency converter II and conveying curtain speed control unit are connected by electrical signal, frequency converter II transmits frequency feedback signal to conveying curtain speed control unit, conveying curtain speed control unit transmits motor enable signal and frequency given signal to frequency converter; photoelectric switch and conveying curtain speed control unit are connected by electrical signal, conveying curtain speed control unit judges whether the raw material on the conveying curtain is transported to the angle nail curtain position by reading the photoelectric switch turntable; weighing sensor and weight analysis unit are connected by electrical signal, weighing sensor transmits the current weight of the fiber in the hopper to the weight analysis unit; solenoid valve and blanking control unit are connected by electrical signal, blanking control unit controls the action of the air cylinder through the solenoid valve, and then controls the opening and closing of the discharge port movable door.

[0138] Step 2, establish human-computer interaction unit

[0139] The human-computer interaction unit connects the touch screen and the audible and visual alarm, and through programming the touch screen, the operator can control the whole equipment start-stop, set the target weight, view the current weight of the fiber in the hopper, view the frequency given and frequency feedback of frequency converter I and frequency converter II, and view the alarm information through the touch screen; when the system generates alarm information, the human-computer interaction unit will control the audible and visual alarm to act until the alarm is eliminated.

[0140] Step 3, establish sequence control unit

[0141] The sequence control unit includes a bale opener loading step control. When the device is started, the sequence control unit will guide the fiber raw material bale opener to perform the cycle operation of "calculating actual parking weight" → "loading" → "loading complete" → "calculating deviation weight and total deviation weight" → "falling material", until the operator issues a stop instruction on the touch screen. When the operator presses the start button, the sequence control unit sets the bale opener step to "calculating actual parking weight", and sends a calculating actual parking weight instruction to the weight analysis unit. Then the sequence control unit sets the bale opener step to "loading", and sends a loading instruction to the angle pin curtain speed control unit, the conveying curtain speed control unit, and the weight analysis unit. After receiving the loading complete signal sent by the weight analysis unit, the sequence control unit sets the bale opener step to "loading complete", and sends a loading complete instruction to the angle pin curtain speed control unit and the conveying curtain speed control unit. After all bale openers are in the "loading complete" step, the sequence control unit sets the bale opener step to "calculating deviation weight and total deviation weight", and sends a calculating deviation weight and total deviation weight instruction to the weight analysis unit. Then the sequence control unit sets the bale opener step to "falling material", and sends a falling material instruction to the falling material control unit. After receiving the falling material complete signal sent by the falling material control unit, the sequence control unit controls the bale opener to perform the next round of weighing, and sets the bale opener step to "calculating actual parking weight", and the cycle is repeated.

[0142] Step 4, establish the angle pin curtain speed control unit

[0143] The angle pin curtain speed control unit specifically comprises calculating the feeding time, calculating the frequency given by the frequency converter I, obtaining the frequency feedback of the frequency converter I, and controlling the start of the frequency converter I. When the angle pin curtain speed control unit receives the feeding instruction from the sequence control unit, the angle pin curtain speed control unit starts the internal timer, begins timing, and transmits the enable signal to the frequency converter I to control the start of the frequency converter I, so that the motor I rotates to drive the angle pin curtain to advance; when the angle pin curtain speed control unit receives the feeding completion instruction from the sequence control unit, the angle pin curtain speed control unit stops the internal timer, ends timing, calculates the time length, defines the time length as the feeding time (T), and stops transmitting the enable signal to the frequency converter I to control the stop of the frequency converter I, so that the motor I stops and the angle pin curtain stops. According to the statistical data analysis of the production line, the feeding time should be controlled between 10-15 seconds, which can meet the cotton supply efficiency of the opening machine backward, and can also avoid the over-shooting of the weighing reading, and the uncontrolled weight of the fiber in the hopper. The feeding time is further divided into six time intervals. If the feeding time is 0<T≤5s, the feeding speed of the angle pin curtain is too fast, the frequency of the frequency converter I is reduced by 2Hz; if the feeding time is 5<T≤10s, the feeding speed of the angle pin curtain is fast, the frequency of the frequency converter I is reduced by 1Hz; if the feeding time is 10<T≤15s, the feeding speed of the angle pin curtain is suitable; the frequency of the frequency converter I remains unchanged; if the feeding time is 15<T≤20s, the feeding speed of the angle pin curtain is slow, the frequency of the frequency converter I is increased by 1Hz; if the feeding time is 20<T≤50s, the feeding speed of the angle pin curtain is too slow, the frequency of the frequency converter I is increased by 2Hz; if the feeding time is >50s, there may be no raw material on the conveying curtain, the angle pin curtain speed control unit generates an alarm information, which is forwarded to the human-computer interaction unit through the sequence control unit, and finally the human-computer interaction unit controls the sound and light alarm to prompt the operator to handle.

[0144] Step 5, establishing the conveying curtain speed control unit

[0145] The conveying curtain speed control unit specifically comprises reading photoelectric switch state, setting variable frequency converter II given frequency, obtaining variable frequency converter II frequency feedback, and controlling variable frequency converter II start. When the conveying curtain speed control unit receives the feeding instruction from the sequence control unit, the conveying curtain speed control unit reads the photoelectric switch state. When the photoelectric switch is in the light transmission state, it is considered that the raw material on the conveying curtain has not reached the gimp curtain position, and the conveying curtain speed control unit transmits an enable signal to the variable frequency converter II to control the variable frequency converter II to start, so that the motor II rotates to drive the conveying curtain to advance. When the photoelectric switch is in the light shielding state, it is considered that the raw material on the conveying curtain has reached the gimp curtain position, and the conveying curtain speed control unit stops transmitting the enable signal to the variable frequency converter II to control the variable frequency converter II to stop, so that the motor II stops, and further the conveying curtain stops. The given frequency of the conveying curtain is set through the human-computer interaction unit, and the frequency setting range is 5-50 Hz. The controller reads the feedback frequency of the variable frequency converter and displays it on the human-computer interaction unit.

[0146] Step 6, establishing a weight analysis unit

[0147] The weight analysis unit comprises reading the weighing sensor signal, calculating the actual parking weight, calculating the deviation weight and the total deviation weight. The weight analysis unit reads the signal of the weighing sensor and converts it into the current weight data (W 当前 ) of the hopper fiber. When the weight analysis unit receives the actual parking weight calculation instruction from the sequence control unit, the weight analysis unit calculates the actual parking weight of the current round according to the formula. W 停车 =W 目标 +W 总偏差(n) (n is the weighing round, n=1 when the first round is weighed, and W 总偏差(1) =0); when the weight analysis unit receives the feeding instruction from the sequence control unit, the weight analysis unit compares the relationship between the current weight W 当前 and W 停车 in real time. When W 当前 ≥W 停车 , the weight analysis unit sends a feeding completion signal to the sequence control unit; when the weight analysis unit receives the deviation weight and total deviation weight calculation instruction from the sequence control unit, the weight analysis unit calculates the deviation weight W 偏差 , wherein W 偏差 = W 目标 -W 当前 ; and calculates the total deviation weight W 总偏差 , wherein W 总偏差(n+1) =W 总偏差（n） +W 偏差 (n is the weighing round, n=1 when the first round is weighed, and W 总偏差(1) =0);

[0148] For example, the operator sets W 目标 as 2000g (W目标 = 2000 g

[0149] First round weighing, W 总偏差（1） = 0, calculated W 停车 = W 目标 + W 总偏差（1） = 2000 + 0 = 2000 g, this round weighing is according to 2000 g, when W 当前 ≥ W 停车 , the corner pin curtain stops, but in the process of stopping, the corner pin curtain still sends part of the raw materials to the hopper due to inertia, therefore, after the weight is stable, there must be W 当前 > W 停车 , we assume that the corner pin curtain sends an extra amount of 200 g, and this weight does not change greatly in a short time, then the W 当前 of this round weighing = 2000 + 200 = 2200 g

[0150] In the calculation deviation step, W 偏差 = W 目标 - W 当前 = 2000 - 2200 = -200 g, W 总偏差（2） = W 总偏差（1） + W 偏差 = 0 + (-200) = -200 g

[0151] Second round weighing, W 停车 = W 目标 + W 总偏差（2） = 2000 + (-200) = 1800 g, this round weighing is according to 1800 g, when W 当前 ≥ W 停车 , the corner pin curtain stops, but in the process of stopping, similarly, the corner pin curtain still sends part of the raw materials to the hopper, according to our previous assumption, for example, it also sends an extra 200 g, then the W 当前 of this round weighing = 1800 + 200 = 2000 g

[0152] In the calculation deviation step, W 偏差 = W 目标 - W 当前 = 2000 - 2000 = 0, W 总偏差（3） = W 总偏差（2） + W 偏差 = -200 + 0 = -200 g

[0153] The subsequent round weighing is similar to the second round, and will not be repeated.

[0154] Step 7, establish the material falling control unit

[0155] The blanking control unit includes receiving blanking instruction of the sequence control unit, controlling the electromagnetic valve action through electric signal. When the blanking control unit receives the blanking instruction of the sequence control unit, the blanking control unit controls the air cylinder to extend through the electromagnetic valve, so that the movable door under the hopper is opened, the blanking is started, after maintaining the blanking action for 2 seconds, the blanking control unit controls the air cylinder to retract through the electromagnetic valve, so that the movable door under the hopper is closed, and sends the blanking completion signal to the sequence control unit.

[0156] The above is only the preferred embodiment of the present application, not any form of the present application, any simple modification, equivalent change of the above embodiment according to the technical essence of the present application, falls within the protection scope of the present application.

Claims

1. A fiber raw material batching metering control system suitable for spunlace nonwoven fabric production, characterized by, The application relates to a fiber raw material batching and metering control system and a fiber raw material batching and metering control method. The fiber raw material batching and metering control system comprises a controller (8), a motor I (9) for driving the angle nail curtain (2) to run, a motor II (10) for driving the conveying curtain (1) to run, a photoelectric switch (11) arranged at an observation window of the angle nail curtain (2), a weighing sensor (6) arranged on the hopper (3), and an electromagnetic valve (12) for controlling the material dropping; a frequency converter I (13) is arranged on the motor I (9), and the frequency converter I (13) and the controller (8) are connected through electric signals; a frequency converter II (14) is arranged on the motor II (10), and the frequency converter II (14) and the controller (8) are connected through electric signals; the cylinder (16) is connected with the electromagnetic valve (12) through a gas source pipe, and the electromagnetic valve (12) and the controller (8) are connected through electric signals; the photoelectric switch (11) and the weighing sensor (6) are connected with the controller (8) through electric signals. The controller (8) comprises a sequence control unit (81), a man-machine interaction unit (82), an angle nail curtain speed control unit (83), a conveying curtain stop control unit (84), a weight analysis unit (85) and a material dropping control unit (86); the angle nail curtain speed control unit (83), the conveying curtain stop control unit (84), the weight analysis unit (85) and the material dropping control unit (86) are connected with the sequence control unit (81), and the angle nail curtain speed control unit (83), the conveying curtain stop control unit (84), the weight analysis unit (85) and the material dropping control unit (86) are also connected with the man-machine interaction unit (82); the frequency converter I (13) and the angle nail curtain speed control unit (83) are connected through electric signals; the frequency converter II (14) and the conveying curtain stop control unit (84) are connected through electric signals; the photoelectric switch (11) and the conveying curtain stop control unit (84) are connected through electric signals; the weighing sensor (6) and the weight analysis unit (85) are connected through electric signals; and the electromagnetic valve (12) and the material dropping control unit (86) are connected through electric signals. The angle nail curtain speed control unit (83) comprises a frequency converter I operation frequency receiving module (831), a timer (832), a feeding time calculation module (833), and a frequency converter I operation frequency communication module (834). The frequency converter I operation frequency receiving module (831) is connected with the frequency converter I (13), and is also connected with the feeding time calculation module (833). The timer (832) is connected with the feeding time calculation module (833). The feeding time calculation module (833) is connected with the frequency converter I operation frequency communication module (834), and the frequency converter I operation frequency communication module (834) is connected with the frequency converter I (13). The frequency converter I operation frequency receiving module (831) is used for receiving the operation frequency feedback from the frequency converter I (13) and monitoring the operation state of the frequency converter I (13). The timer (832) is used for calculating the time length from the start to the stop of the angle nail curtain (2), which is the feeding time. The feeding time calculation module (833) is used for adjusting the frequency setting value of the frequency converter I (13) in combination with the operation frequency feedback from the frequency converter I (13) and the feeding time, and conveying the instruction to the frequency converter I operation frequency communication module (834). The frequency converter I operation frequency communication module (834) is used for conveying the adjusted operation frequency instruction of the frequency converter I (13) to the frequency converter I (13) to control the speed of the angle nail curtain (2). The conveying curtain stop control unit (84) comprises a photoelectric switch signal receiving module (841), a stop operation analysis module (842), and a frequency converter II operation frequency communication module (843). The photoelectric switch signal receiving module (841) is connected with the photoelectric switch (11) and is also connected with the stop operation analysis module (842). The stop operation analysis module (842) is connected with the frequency converter II operation frequency communication module (843), and the frequency converter II operation frequency communication module (843) is connected with the frequency converter II (14). The photoelectric switch signal receiving module (841) is used for receiving the information feedback from the photoelectric switch (11) to monitor the position of the fiber raw material. The stop operation analysis module (842) is used for analyzing the position of the fiber raw material, issuing the instruction to stop the transportation of the conveying curtain (1), and conveying the instruction to the frequency converter II operation frequency communication module (843). The frequency converter II operation frequency communication module (843) is used for receiving and conveying the instruction to stop the operation of the conveying curtain (1) to control the stop of the conveying curtain (1).

2. The fiber raw material batching and metering control system suitable for the production of spunlace nonwoven fabric according to claim 1, characterized in that, The fiber raw material batching and metering control system further comprises an audible and visual alarm (15) for prompting. The controller (8) further comprises a pre-warning unit (87) connected with the man-machine interaction unit (82) and connected with the audible and visual alarm (15).

3. A method for controlling the amount of fiber stock used in the production of spunlace nonwoven fabric, characterized by, Control of the angle nail curtain speed: S1: The angle nail curtain speed control unit calculates the time length from the start to the stop of the angle nail curtain, which is the feeding time. S2 adjusts the speed of the angle pin curtain: according to the feeding time in step S1, compare with the pre-set optimal feeding time, and adjust the speed of the angle pin curtain according to the difference.

4. The fiber raw material batching and metering control method suitable for the production of spunlace nonwoven fabric according to claim 3, characterized in that, In step S2, If the feeding time is 0<T≤5s, the feeding speed of the angle pin curtain is too fast, control the angle pin curtain speed to reduce 2Hz; If the feeding time is 5<T≤10s, the feeding speed of the angle pin curtain is fast, control the angle pin curtain speed to reduce 1Hz; If the feeding time is 10<T≤15s, the feeding speed of the angle pin curtain is suitable; keep the angle pin curtain speed unchanged; If the feeding time is 15<T≤20s, the feeding speed of the angle pin curtain is slow, control the angle pin curtain speed to increase 1Hz; If the feeding time is 20<T≤50s, the feeding speed of the angle pin curtain is too slow, control the angle pin curtain speed to increase 2Hz.

5. The fiber raw material batching and metering control method suitable for the production of spunlace nonwoven fabric according to claim 4, characterized in that, In step S2, If the feeding time is >50s, the feeding of the angle pin curtain is abnormal, keep the angle pin curtain speed unchanged, and alarm.

6. The fiber raw material batching and metering control method suitable for the production of spunlace nonwoven fabric according to claim 3, characterized in that, Also including the control of the advance parking weight: X1 sets the target value of the weight W 目标 , start the fiber raw material unpacking machine; X2 calculates the parking weight W 停车 , W 停车 = W 目标 + W 总偏差(n) ; Wherein, n is the weighing round, the first weighing n=1; X3 starts motor I, starts feeding; X4 judges the current weight W of the fiber raw material 当前 the relationship between W 停车 ; If W 当前 ≥ W 停车 , then the motor I is stopped, and the subsequent feeding completion step is entered. On the contrary, control motor I to continue feeding; X5 judges whether all fiber raw material unpacking machines participating in fiber raw material batching are feeding completed; If any fiber raw material unpacking machine is not in the feeding completion step, continue to wait; If all fiber raw material unpacking machines are in the feeding completion step, enter the subsequent deviation calculation program; X6 calculates the deviation weight W 偏差 , W 偏差 = W 目标 -W 当前 ; calculates the total deviation weight W 总偏差 , W 总偏差(n+1) = W 总偏差（n） +W 偏差 ; X7 sends the cotton falling instruction to the fiber raw material unpacking machine, waits for 8 seconds, and returns to step X2.

7. A computer readable storage medium, the storage medium has a computer program stored thereon, the computer program is executed by a processor to realize the control method of any one of claims 3-6.

8. An information data processing terminal suitable for the fiber raw material batching metering control method of any one of claims 3-6 for the production of spunlace nonwoven fabric.

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