Fiber raw material ingredient metering control system and method suitable for spunlace non-woven fabric production

Abstract

The invention discloses a fiber raw material ingredient metering control system and method suitable for spunlace non-woven fabric production, and belongs to the technical field of spunlace non-woven fabrics. Based on an existing bale opening system, the speed of a brad curtain is automatically adjusted, so that the feeding speed of each bale opening machine is kept relatively constant; by automatically adjusting the parking weight in advance, the weighing accuracy is guaranteed; and moreover, a closed-loop control mode is adopted, so that the related parameters are automatically calculated by a control algorithm according to an actual environment, manual debugging is not needed, and finally, the metering accuracy of the fiber raw material ingredients is ensured.

Description

Technical Field

[0001] The present invention relates to a fiber raw material batching metering control system and method, and in particular to a fiber raw material batching metering control system and method suitable for the production of spunlace nonwoven fabrics, belonging to the technical field of spunlace nonwoven fabrics. Background Art

[0002] Spunlace nonwoven fabrics are made of fibers, which are formed after opening, mixing, combing, laying, drafting, spunlace, drying and winding. At present, the mainstream spunlace nonwoven fabric processing process is as follows: 1. Fiber opening: the fiber raw materials are quantitatively opened and mixed; 2. Fiber web forming: combing, air-laid web, wet-laid web; 3. Fiber web laying: cross-laid web or parallel-laid web (two combs and one lay half cross-laid web, two combs and two lays full cross-laid web, two combs and parallel-laid web); 4. Fiber web consolidation: the fiber web is entangled by high-pressure water needle penetration from top to bottom; 5. Fiber cloth dehydration: vacuum suction, dehydration of the cloth surface; 6. Fiber cloth drying: hot air penetration or drying with a drying drum.

[0003] In the production process of spunlace nonwovens, different raw materials generally need to be mixed in a certain proportion, and in order to accurately control the proportion, the input amount needs to be accurately controlled. At present, the mainstream solution is to install a weighing sensor on the bale opener. After the worker unpacks the raw materials, they are placed on the conveyor curtain and conveyed to the corner nail curtain. The corner nail curtain hooks the raw materials and conveys them upward. Raw materials with too large volume will be torn and scattered by the cotton-leveling beater and fall back to the conveyor curtain; raw materials with small volume will pass through the cotton-leveling beater smoothly, and the cotton will be completely stripped off by the cotton stripping beater on the rear side and sent to the hopper; when the weight of the raw materials in the hopper (measured by the weighing sensor) reaches the set value, the cotton feeding is stopped and other bale openers are waiting; when all bale openers have weighed the raw materials, the cotton will be dropped at the same time, and the raw materials will fall into the rough cotton opener, and the rough cotton opener will complete the mixing work.

[0004] At present, for the bale openers that adopt this working mode, when the cotton feeding process is stopped, some additional raw materials will inevitably be brought into the hopper, resulting in overshoot, which will eventually cause the actual weighed raw materials to be higher than the set value, and then cause the raw material ratio deviation, which greatly affects the subsequent processes and the quality of spunlace non-woven fabrics. In order to solve this problem, the "early stop weight" is set so that the cotton feeding operation is stopped before the current weight value reaches the set value, thereby compensating for this part of the impact. However, in actual production, the weight of the additional raw materials fed after the cotton feeding is stopped is affected by many factors, including the ease of hooking the raw materials themselves, the amount of raw materials accumulated on the conveyor curtain, and the distance between the cotton beater and the corner nail curtain. Therefore, using a single parameter cannot guarantee the accuracy of the weighing, and the parameters should be adjusted in real time according to the actual situation.

[0005] Although the prior art CN110782179A discloses "a digital production system for polylactic acid spunlace nonwoven fabrics", it mainly solves the problem that the market still lacks a modern polylactic acid spunlace nonwoven fabric production system, and polylactic acid fiber spunlace nonwoven fabrics still have problems such as low production efficiency, poor product quality, and high production costs. CN210592842U discloses a nonwoven fabric production bag opening machine that can control the amount of fiber raw material poured out, in which the accuracy of the ratio is mainly ensured by slowly opening the discharge port and slowly falling the fiber raw material, and it cannot be poured out from the inside of the discharge box all at once; CN218777832U discloses "a bag opening machine with automatic weighing function", but it mainly solves the problem of low work efficiency due to manual placement to break up the pressed nonwoven fibers; To this end, a fiber raw material metering control system and method for spunlace nonwoven fabric production is needed to improve the accuracy of the raw material mixing ratio, ultimately ensuring the stability of the spunlace nonwoven fabric production process and improving product quality. Summary of the invention

[0006] In order to solve the shortcomings of the existing technology, a fiber raw material batching metering control system and method suitable for spunlace non-woven fabric production is proposed. Based on the existing bag opening system, the feeding speed of each bag opening machine is kept relatively constant by automatically adjusting the corner nail curtain speed; the accuracy of weighing is guaranteed by automatically adjusting the early stop weight; and the closed-loop control method is adopted so that all the parameters involved are automatically calculated by the control algorithm according to the actual environment without manual debugging, and finally, the accuracy of fiber raw material batching is guaranteed.

[0007] In order to achieve the above technical objectives, the following technical solutions are proposed: The first purpose of the technical scheme is to provide: a fiber raw material batching metering control system suitable for the production of spunlace non-woven fabrics, which is arranged in a fiber raw material bale opening machine, wherein the fiber raw material bale opening machine comprises a conveying curtain, a corner nail curtain and a hopper, wherein the conveying curtain is arranged at the front side of the workstation of the corner nail curtain, and the hopper is arranged at the rear side of the workstation of the corner nail curtain; the corner nail curtain is arranged obliquely upward, a cotton evenly beating hand is arranged on one side of the corner nail curtain, and a cotton stripping hand is arranged on the other side of the corner nail curtain; a movable door is arranged inside the discharge port of the hopper, and a rough cotton opener is arranged at the rear side of the workstation of the hopper; The fiber raw material batching metering control system includes a controller, a motor I for driving the corner nail curtain, a motor II for driving the conveying curtain, a photoelectric switch arranged on the corner nail curtain observation window, a weighing sensor arranged on the hopper, and a solenoid valve for controlling the material dropping; The controller includes a sequence control unit, a human-machine interaction unit, a corner nail curtain speed control unit, a conveying curtain stop control unit, a weight analysis unit and a blanking control unit. The sequence control unit is connected to the human-machine interaction unit, the sequence control unit is connected to the corner nail curtain speed control unit, the sequence control unit is connected to the conveying curtain stop control unit, the sequence control unit is connected to the weight analysis unit, and the sequence control unit is connected to the blanking control unit; the human-machine interaction unit is connected to the corner nail curtain speed control unit, the human-machine interaction unit is connected to the conveying curtain stop control unit, the human-machine interaction unit is connected to the weight analysis unit, and the human-machine interaction unit is connected to the blanking control unit; The motor I is provided with a frequency converter I, and the frequency converter I is connected to the corner nail curtain speed control unit through an electrical signal. The corner nail curtain is driven by the motor I, and the motor I is connected to the frequency converter I, and the speed of the corner nail curtain is adjusted by the frequency converter I; the frequency converter I is connected to the corner nail curtain speed control unit in the controller, and the corner nail curtain speed control unit calculates the time from the start to the stop of the corner nail curtain through the built-in timer, and the time is defined as the "feeding time"; the corner nail curtain speed control unit adjusts the frequency setting value of the frequency converter I according to the feeding time to control the speed of the corner nail curtain; Motor II is equipped with frequency converter II, and frequency converter II is connected to the conveying curtain stop control unit through electrical signals. The conveying curtain is driven by motor II, which is connected to frequency converter II, and the operation of the conveying curtain is adjusted by frequency converter II; frequency converter II is connected to the conveying curtain stop control unit in the controller, and the photoelectric switch is connected to the conveying curtain stop control unit through electrical signals. When the fiber raw material transported on the conveying curtain reaches the corner nail curtain position, the photoelectric switch will be triggered, and the conveying curtain stop control unit will receive the electrical signal of the photoelectric switch, and then the motor II will be controlled by frequency converter II, and finally the conveying curtain will be controlled to stop, and the corner nail curtain will start to transport the fiber raw material; The weighing sensor is connected to the weight analysis unit through an electrical signal. The weighing sensor is used to monitor the current weight (W) of the fiber raw material in the hopper in real time. 当前 ); The movable door is opened and closed by a cylinder, the cylinder is connected to the solenoid valve through an air source pipe, and the solenoid valve is connected to the blanking control unit through an electrical signal.

[0008] The work processes involved include: "Calculate actual parking weight": The weight analysis unit calculates the actual parking weight currently weighed (W 停车 ), W 停车 =W 目标 +W 总偏差（n） (n is the weighing round, n=1 for the first weighing round); "Loading": The corner nail curtain speed control unit controls the inverter I to start the motor I. The current weight of the fiber raw material in the hopper (W) is collected in real time through the weighing sensor installed at the hopper. 当前), and fed back to the weight analysis unit; when W 当前 ≥W 停车 When the corner nail curtain speed control unit controls the inverter I to stop the motor I and enter the "loading completion" step; "Loading completed": The controller will determine the current stage of all fiber raw material bale openers. When all fiber raw material bale openers are in the "loading completed" step, it will enter the "calculation deviation weight and total deviation weight" step; "Calculate deviation weight and total deviation weight": The weight analysis unit calculates the deviation weight (W 偏差 ) and the accumulated 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, n=1 for the first weighing round); "Blanking": The blanking control unit sends a cotton dropping command to the fiber raw material bale opener. After the solenoid valve in the fiber raw material bale opener receives the cotton dropping command, it controls the movable door to open through the cylinder to complete the blanking. After the blanking is completed, it re-enters the "calculate the actual parking weight" step and repeats this cycle.

[0009] Furthermore, the fiber raw material batching metering control system also includes an audible and visual alarm for prompting, and the controller also includes an early warning unit, which is connected to the sequence control unit, which is connected to the human-computer interaction unit, and which is connected to the audible and visual alarm.

[0010] Furthermore, the human-machine interaction unit is connected to a touch screen, and the operator can set the target weight (W) by means of the touch screen. 目标 ) and start the equipment; after the equipment is started, the controller will guide the fiber raw material bale opener to execute the cycle operation of "calculating the actual parking weight" (completed by the weight analysis unit) → "loading" (completed jointly by the conveyor curtain stop control unit and the corner nail curtain speed control unit) → "loading completed" → "calculating the deviation weight and the total deviation weight" (completed by the weight analysis unit) → "dropping", until the operator issues a stop command on the touch screen.

[0011] Furthermore, the corner nail curtain speed control unit includes a frequency converter I operating frequency receiving module, a timer, a feeding time calculation module and a frequency converter I operating frequency communication module. The frequency converter I operating frequency receiving module is connected to the frequency converter I, the frequency converter I operating frequency receiving module is also connected to the feeding time calculation module, and the timer is connected to the feeding time calculation module; the feeding time calculation module is connected to the frequency converter I operating frequency communication module, and the frequency converter I operating frequency communication module is connected to the frequency converter I; Among them, the operating frequency receiving module of Inverter I: It is used to monitor the operating status of Inverter I, that is, to receive the operating frequency fed back from Inverter I; Timer: It is used to calculate the duration from the start to the stop of the studded curtain, that is, this duration is the "loading time"; Loading time calculation module: It is used to adjust the frequency set value of Inverter I by combining the operating frequency fed back from Inverter I and the loading time, and convey the instruction to the operating frequency communication module of Inverter I; Operating frequency communication module of Inverter I: The operating frequency communication module of Inverter I sends the adjusted operating frequency instruction of Inverter I to Inverter I, that is, to control the speed of the studded curtain.

[0012] Further, the conveying curtain stop control unit includes a photoelectric switch signal receiving module, a stop operation analysis module and an operating frequency communication module of Inverter II. The photoelectric switch signal receiving module is connected to the photoelectric switch, the photoelectric switch signal receiving module is also connected to the stop operation analysis module, the stop operation analysis module is connected to the operating frequency communication module of Inverter II, and the operating frequency communication module of Inverter II is connected to Inverter II; Among them, the photoelectric switch signal receiving module: It is used to monitor the position of the fiber raw material, that is, to receive the information fed back from the photoelectric switch; Stop operation analysis module: It is used to analyze the position of the fiber raw material and send an instruction to stop the transportation of the conveying curtain to Inverter II through the operating frequency communication module of Inverter II; Operating frequency communication module of Inverter II: Receive and convey the instruction to stop the operation of the conveying curtain.

[0013] The second object of this technical solution is to provide: A fiber raw material batching metering control method applicable to the production of spunlace non-woven fabrics, including the control of the speed of the studded curtain: S1 Statistically calculate the loading time (T / s); Among them, the loading time specifically refers to: The studded curtain speed control unit uses the built-in timer to calculate the duration from the start to the stop of the studded curtain, which is the "loading time"; S2 Compare the loading time in step S1 with the preset optimal loading time, and adjust the speed of the studded curtain according to the degree of difference; specifically include the following: If the loading time is 0 < T ≤ 5s, the loading speed of the studded curtain is too fast, and the speed of the studded curtain is controlled to decrease by 2 Hz (where Hz is the frequency unit, and Inverter I controls the speed of Motor I by controlling the output frequency, so it can be directly used as a physical quantity reflecting the speed of Motor I); If the loading time is 5 < T ≤ 10s, the loading speed of the studded curtain is relatively fast, and the speed of the studded curtain is controlled to decrease by 1 Hz; If the feeding time is 10 < T ≤ 15 s, the feeding speed of the spike curtain is appropriate; keep the speed of the spike curtain unchanged; If the feeding time is 15 < T ≤ 20 s, the feeding speed of the spike curtain is slow, control the speed of the spike curtain to increase by 1 Hz; If the feeding time is 20 < T ≤ 50 s, the feeding speed of the spike curtain is too slow, control the speed of the spike curtain to increase by 2 Hz; If the feeding time is > 50 s, the feeding of the spike curtain is abnormal, keep the speed of the spike curtain unchanged and alarm. Thus, the feeding speeds of each bale opener are basically kept constant.

[0014] Further, the fiber raw material batching metering control method further includes the control of the early stop weight: X1 sets the weighing target value W 目标 , and starts the fiber raw material bale opener; X2 calculates the stop weight W 停车 , where W 停车 = W 目标 + W 总偏差(n) (n is the weighing round, n = 1 for the first weighing) X3 starts the motor Ⅰ and starts feeding; X4 judges the relationship between the current weight W 当前 of the fiber raw material and W 停车 ; If W 当前 ≥ W 停车 , then stop the motor Ⅰ and enter the subsequent feeding completion step; On the contrary, control the motor Ⅰ to continue feeding; X5 judges whether all the fiber raw material bale openers participating in the fiber raw material batching have completed feeding; If any fiber raw material bale opener is not in the feeding completion step, continue to wait; If all the fiber raw material bale openers are in the feeding completion step, enter the subsequent deviation calculation program; X6 calculates the deviation weight W 偏差 , where W 偏差 = W 目标 - W 当前 ; calculates the total deviation weight W 总偏差 , where 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); X7 sends a falling cotton instruction to the fiber raw material bale opener, waits for 8 seconds, and returns to step X2.

[0015] The third purpose of the present technical solution is to provide: a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned control method is implemented.

[0016] The fourth purpose of the present technical solution is to provide: an information data processing terminal suitable for a fiber raw material batching metering control method for spunlace nonwoven fabric production.

[0017] The positional relationships involved in this technical solution, such as "center", "front side of the workstation", "back side of the workstation", "obliquely upward", "one side", "the other side", and "inside", are defined according to the actual usage conditions. They are conventional terms in this technical field and are also conventional terms used by technical personnel in this field in actual use.

[0018] In the description of the present technical solution, it should be noted that, unless otherwise clearly specified and limited, "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] The beneficial technical effects brought about by adopting this technical solution are: The present invention provides a fiber raw material batching metering control system and method suitable for the production of spunlace non-woven fabrics. Based on the existing fiber raw material bale opening machine, the feeding speed of each fiber raw material bale opening machine is kept relatively constant by automatically adjusting the angle nail curtain speed; the accuracy of weighing is guaranteed by automatically adjusting the early stop weight; and the conveying curtain is stopped to better facilitate the feeding of the angle nail curtain, that is, to ensure the stability and sustainability of the feeding process; By adopting a closed-loop control method, all the parameters involved are automatically calculated by the control algorithm according to the actual environment, without the need for manual debugging. Ultimately, the accuracy of fiber raw material metering is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a fiber raw material bag opening machine according to the present invention; Figure 2 It is a logical connection block diagram of the control system in the present invention; Figure 3 It is a structural block diagram of the controller in the present invention; Figure 4 This is a working principle diagram of the corner nail curtain speed control unit in the controller of the present invention; Figure 5This is a working principle diagram of the conveying curtain stop control unit in the controller of the present invention; Figure 6 This is a control logic diagram of the corner nail curtain speed in the present invention; Figure 7 It is a logic control diagram of the advance parking weight in the present invention; In the figure, 1, conveying curtain, 2, corner nail curtain, 3, hopper, 4, cotton leveling beater, 5, cotton stripping beater, 6, weighing sensor, 7, rough cotton opener; 8. Controller, 81. Sequence control unit, 82. Human-computer interaction unit, 83. Corner nail curtain speed control unit, 831. Frequency converter I operating frequency receiving module, 832. Timer, 833. Loading time calculation module, 834. Frequency converter I operating frequency communication module, 84. Conveyor curtain stop control unit, 841. Photoelectric switch signal receiving module, 842. Stop operation analysis module, 843. Frequency converter II operating frequency communication module, 85. Weight analysis unit, 86. Dropping control unit, 87. Early warning unit, 9. Motor I, 10. Motor II, 11. Photoelectric switch, 12. Solenoid valve, 13. Frequency converter I, 14. Frequency converter II, 15. Sound and light alarm, 16. Cylinder. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1 This embodiment provides: a fiber raw material batching metering control system suitable for the production of spunlace non-woven fabrics, which is arranged in a fiber raw material bag opening machine, such as Figure 1 As shown, the fiber raw material bale opening machine comprises a conveying curtain 1, a corner nail curtain 2 and a hopper 3, wherein the conveying curtain 1 is arranged at the front side of the workstation of the corner nail curtain 2, and the hopper 3 is arranged at the rear side of the workstation of the corner nail curtain 2; the corner nail curtain 2 is arranged obliquely upward, a cotton leveling beater 4 is arranged on one side of the corner nail curtain 2, and a cotton stripping beater 5 is arranged on the other side of the corner nail curtain 2; a movable door is arranged inside the discharge port of the hopper 3, and a rough cotton opener 7 is arranged at the rear side of the workstation of the hopper 3; like Figure 2As shown, the fiber raw material batching metering control system includes a controller 8, a motor I9 for driving the corner nail curtain 2, a motor II10 for driving the conveying curtain 1, a photoelectric switch 11 arranged on the observation window of the corner nail curtain 2, a weighing sensor 6 arranged on the hopper 3 and a solenoid valve 12 for controlling the material dropping; the motor I9 is ​​provided with a frequency converter I13, and the frequency converter I13 is connected to the controller 8 through electrical signals; the motor II10 is provided with a frequency converter II14, and the frequency converter II14 is connected to the controller 8 through electrical signals; the cylinder 16 is connected to the solenoid valve 12 through an air source pipe, and the solenoid valve 12 is connected to the controller 8 through electrical signals; the photoelectric switch 11 and the weighing sensor 6 are both connected to the controller 8 through electrical signals.

[0023] Based on the existing bag opening system, the controller 8, motor I9, motor II10, photoelectric switch 11, weighing sensor 6, solenoid valve 12, frequency converter I13 and frequency converter II14 are used to adjust the running speed of the corner nail curtain 2, control the running stop of the conveying curtain 1, and open and close the movable door. For multiple fiber raw material bag opening machines, the feeding speed of each bag opening machine is kept relatively constant by automatically adjusting the speed of the corner nail curtain 2; the accuracy of weighing is guaranteed by automatically adjusting the early parking weight; and the closed-loop control method is adopted 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 fiber raw material batching is guaranteed.

[0024] Example 2 On the basis of Example 1, this example further limits the controller 8 to further illustrate the technical solution.

[0025] like Figure 3 As shown, the controller 8 includes a sequence control unit 81, a human-machine interaction unit 82, a corner nail curtain speed control unit 83, a conveying curtain stop control unit 84, a weight analysis unit 85 and a blanking control unit 86. The sequence control unit 81 is connected to the human-machine interaction unit 82, the sequence control unit 81 is connected to the corner nail curtain speed control unit 83, the sequence control unit 81 is connected to the conveying curtain stop control unit 84, the sequence control unit 81 is connected to the weight analysis unit 85, and the sequence control unit 81 is connected to the blanking control unit 86; the human-machine interaction unit 82 is connected to the corner nail curtain speed control unit 83, the human-machine interaction unit 82 is connected to the conveying curtain stop control unit 84, the human-machine interaction unit 82 is connected to the weight analysis unit 85, and the human-machine interaction unit 82 is connected to the blanking control unit 86; The motor Ⅰ9 is provided with a frequency converter Ⅰ13, and the frequency converter Ⅰ13 is connected to the corner nail curtain speed control unit 83 through an electrical signal. Among them, the corner nail curtain 2 is driven by the motor Ⅰ9, and the motor Ⅰ9 is connected to the frequency converter Ⅰ13, and the speed of the corner nail curtain 2 is adjusted by the frequency converter Ⅰ13; the frequency converter Ⅰ13 is connected to the corner nail curtain speed control unit 83 in the controller 8, and the corner nail curtain speed control unit 83 calculates the time from the start to the stop of the corner nail curtain 2 through the built-in timer 832, and the time is defined as the "feeding time"; the corner nail curtain speed control unit 83 adjusts the frequency setting value of the frequency converter Ⅰ13 according to the feeding time to control the speed of the corner nail curtain 2; The motor Ⅱ10 is provided with a frequency converter Ⅱ14, and the frequency converter Ⅱ14 is connected to the conveying curtain stop control unit 84 through an electrical signal. Among them, the conveying curtain 1 is driven by the motor Ⅱ10, and the motor Ⅱ10 is connected to the frequency converter Ⅱ14, and the operation of the conveying curtain 1 is adjusted by the frequency converter Ⅱ14; the frequency converter Ⅱ14 is connected to the conveying curtain stop control unit 84 in the controller 8, and the photoelectric switch 11 is connected to the conveying curtain stop control unit 84 through an electrical signal. When the fiber raw material transported on the conveying curtain 1 reaches the position of the corner nail curtain 2, the photoelectric switch 11 will be triggered, and the conveying curtain stop control unit 84 will receive the electrical signal of the photoelectric switch 11, and then the motor Ⅱ10 will be controlled through the frequency converter Ⅱ14, and finally the conveying curtain 1 will be controlled to stop, and the corner nail curtain 2 will start to transport the fiber raw material; The weighing sensor is connected to the weight analysis unit through an electrical signal. The weighing sensor is used to monitor the current weight (W) of the fiber raw material in the hopper in real time. 当前 ); The movable door is opened and closed by a cylinder, the cylinder is connected to the solenoid valve through an air source pipe, and the solenoid valve is connected to the blanking control unit through an electrical signal.

[0026] The work processes involved include: "Calculate actual parking weight": The weight analysis unit calculates the actual parking weight currently weighed (W 停车 ), W 停车 =W 目标 +W 总偏差（n） (n is the weighing round, n=1 for the first weighing round); "Loading": The corner nail curtain speed control unit controls the inverter I to start the motor I. The current weight of the fiber raw material in the hopper (W) is collected in real time through the weighing sensor installed at the hopper. 当前 ), and fed back to the weight analysis unit; when W 当前 ≥W 停车 When the corner nail curtain speed control unit controls the inverter I to stop the motor I and enter the "loading completion" step; "Loading completed": The controller will determine the current stage of all fiber raw material bale openers. When all fiber raw material bale openers are in the "loading completed" step, it will enter the "calculation deviation weight and total deviation weight" step; "Calculate deviation weight and total deviation weight": The weight analysis unit calculates the deviation weight (W 偏差 ) and the accumulated 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, n=1 for the first weighing round); "Blanking": The blanking control unit sends a cotton dropping command to the fiber raw material bale opener. After the solenoid valve in the fiber raw material bale opener receives the cotton dropping command, it controls the movable door to open through the cylinder to complete the blanking. After the blanking is completed, it re-enters the "calculate the actual parking weight" step and repeats this cycle.

[0027] Example 3 On the basis of Embodiments 1-2, this embodiment further defines the corner nail curtain speed control unit 83 to further illustrate the technical solution.

[0028] like Figure 4 As shown, the corner nail curtain speed control unit 83 includes a frequency converter I operating frequency receiving module 831, a timer 832, a feeding time calculation module 833 and a frequency converter I operating frequency communication module 834. The frequency converter I operating frequency receiving module 831 is connected to the frequency converter I 13, the frequency converter I operating frequency receiving module 831 is also connected to the feeding time calculation module 833, and the timer 832 is connected to the feeding time calculation module 833; the feeding time calculation module 833 is connected to the frequency converter I operating frequency communication module 834, and the frequency converter I operating frequency communication module 834 is connected to the frequency converter I 13; The inverter I operating frequency receiving module 831 is used to receive the operating frequency fed back from the inverter I 13 and monitor the operating status of the inverter I 13; Timer 832: used to calculate the time from the start to the stop of the corner nail curtain 2, that is, the time is the loading time; The feeding time calculation module 833 is used to adjust the frequency setting value of the frequency converter I 13 in combination with the operating frequency and the feeding time fed back by the frequency converter I 13, and transmit the instruction to the frequency converter I operating frequency communication module 834; The inverter I operating frequency communication module 834 is used to send the adjusted inverter I 13 operating frequency instruction to the inverter I 13, that is, to control the speed of the corner nail curtain 2.

[0029] Example 4 On the basis of embodiments 1-3, this embodiment further limits the conveying curtain stop control unit 84 to further illustrate the technical solution.

[0030] like Figure 5 As shown, the conveyor curtain stop control unit 84 includes a photoelectric switch signal receiving module 841, a stop operation analysis module 842 and a frequency converter II operating frequency communication module 843, the photoelectric switch signal receiving module 841 is connected to the photoelectric switch 11, the photoelectric switch signal receiving module 841 is also connected to the stop operation analysis module 842, the stop operation analysis module 842 is connected to the frequency converter II operating frequency communication module 843, and the frequency converter II operating frequency communication module 843 is connected to the frequency converter II 14; The photoelectric switch signal receiving module 841 is used to receive information fed back from the photoelectric switch 11 and monitor the position of the fiber raw material; Stop operation analysis module 842: used to analyze the position of the fiber raw material, issue an instruction to stop the conveying curtain 1, and convey the instruction to the inverter II operating frequency communication module 843; Inverter II operating frequency communication module 843: used to receive and transmit the instruction to stop the operation of the conveying curtain 1, and control the conveying curtain 1 to stop.

[0031] Example 5 On the basis of embodiments 1-4, in order to timely provide the staff with feedback on the raw material batching measurement and prompt the real-time working status, this embodiment further defines: The fiber raw material batching metering control system further includes an audible and visual alarm 15 for prompting. The controller 8 further includes an early warning unit 87 . The early warning unit 87 is connected to the human-computer interaction unit 82 , and the early warning unit 87 is connected to the audible and visual alarm 15 .

[0032] The human-machine interaction unit 82 is connected to a touch screen, and the operator can use the touch screen to set the target weight (W 目标 ) and start the equipment; after the equipment is started, the controller will guide the fiber raw material bale opener to execute the cycle operation of "calculating the actual parking weight" (completed by the weight analysis unit) → "loading" (completed jointly by the conveyor curtain stop control unit and the corner nail curtain speed control unit) → "loading completed" → "calculating the deviation weight and the total deviation weight" (completed by the weight analysis unit) → "dropping", until the operator issues a stop command on the touch screen.

[0033] Example 6 This embodiment provides: a fiber raw material batching control method suitable for the production of spunlace nonwoven fabrics, such as Figure 6 As shown, including the control of the corner nail curtain speed: S1 statistics of feeding time (T / s); Among them, the feeding time specifically refers to: the corner nail curtain speed control unit uses the built-in timer to calculate the duration from the start to the stop of the corner nail curtain, which is the "feeding time". S2 compares the feeding time in step S1 with the preset optimal feeding time, and adjusts the speed of the corner nail curtain according to the degree of difference; specifically, it includes the following: If the feeding time is 0 < T ≤ 5s, the feeding speed of the corner nail curtain is too fast, and the speed of the corner nail curtain is controlled to decrease by 2 Hz (where Hz is the frequency unit, and the frequency converter Ⅰ controls the rotation speed of the motor Ⅰ by controlling the output frequency. Therefore, it can be directly used as a physical quantity reflecting the speed of the motor Ⅰ). If the feeding time is 5 < T ≤ 10s, the feeding speed of the corner nail curtain is relatively fast, and the speed of the corner nail curtain is controlled to decrease by 1 Hz. If the feeding time is 10 < T ≤ 15s, the feeding speed of the corner nail curtain is appropriate; keep the speed of the corner nail curtain unchanged. If the feeding time is 15 < T ≤ 20s, the feeding speed of the corner nail curtain is relatively slow, and the speed of the corner nail curtain is controlled to increase by 1 Hz. If the feeding time is 20 < T ≤ 50s, the feeding speed of the corner nail curtain is too slow, and the speed of the corner nail curtain is controlled to increase by 2 Hz. If the feeding time is > 50s, the feeding of the corner nail curtain is abnormal, keep the speed of the corner nail curtain unchanged, and give an alarm. Thus, the feeding speeds of each bale opener are basically kept constant.

[0034] Embodiment 7 On the basis of Embodiment 6, this embodiment also controls the early stop weight, as Figure 7 shown, specifically including: X1 sets the weighing target value W 目标 , and starts the fiber raw material bale opener; X2 calculates the stop weight W 停车 , where W 停车 = W 目标 + W 总偏差(n) (n is the weighing round, n = 1 during the first weighing) X3 starts the motor Ⅰ and starts feeding; X4 judges the relationship between the current weight W 当前 of the fiber raw material and W 停车 ; If W 当前 ≥ W 停车 , then stop the motor Ⅰ and enter the subsequent feeding completion step; On the contrary, control the motor Ⅰ to continue feeding; X5 judges whether all the fiber raw material bale openers participating in the fiber raw material batching have completed feeding; If any fiber raw material bag opening machine is not in the loading completion step, continue to wait; If all fiber raw material bale opening machines are in the loading completion step, the subsequent deviation calculation procedure will be entered; X6 calculation deviation weight W 偏差 , where W 偏差 = W 目标 -W 当前 ; Calculate the total deviation weight W 总偏差 , where 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); X7 sends a cotton drop instruction to the fiber raw material bale opener, waits for 8 seconds, and then returns to step X2.

[0035] Example 8 This embodiment provides: a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned control method is implemented.

[0036] Example 9 This embodiment provides: an information data processing terminal for a fiber raw material batching metering control method suitable for spunlace nonwoven fabric production.

[0037] Example 10 This embodiment is combined with an actual production line, as another implementation method, 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 bag opening machine, including a controller, a motor I for driving a corner nail curtain, a motor II for driving a conveying curtain, a photoelectric switch arranged on an observation window of the corner nail curtain, a weighing sensor arranged on a hopper, and a solenoid valve for controlling the blanking; and the specific construction includes: Step 1: Connect the components in the system Motor I is connected to frequency converter I through electrical signals, frequency converter I provides power to motor I and controls the speed; frequency converter I is connected to the corner nail curtain speed control unit through electrical signals, frequency converter I transmits the operation status signal and frequency feedback signal to the corner nail curtain speed control unit, and the corner nail curtain speed control unit transmits the motor enable signal and frequency setting signal to frequency converter I; motor II is connected to frequency converter II through electrical signals, frequency converter II provides power to motor II and controls the speed; frequency converter II is connected to the conveying curtain speed control unit through electrical signals, frequency converter II transmits the conveying curtain speed control unit The conveyor curtain speed control unit transmits the motor enable signal and the frequency setting signal to the frequency converter through the frequency feedback signal; the photoelectric switch is connected to the conveyor curtain speed control unit through electrical signals, and the conveyor curtain speed control unit determines whether the raw materials on the conveyor curtain are transported to the corner nail curtain position by reading the photoelectric switch turntable; the weighing sensor is connected to the weight analysis unit through electrical signals, and the weighing sensor transmits the current weight of the fiber in the hopper to the weight analysis unit; the solenoid valve is connected to the blanking control unit through electrical signals, and the blanking control unit controls the cylinder movement through the solenoid valve, thereby controlling the opening and closing of the movable door of the discharge port.

[0038] Step 2: Establish a human-computer interaction unit The human-machine interaction unit connects the touch screen and the sound and light alarm. By programming the touch screen, the operator can control the overall start and stop of the equipment, set the weighing target value, check the current weight of the fiber in the hopper, check the frequency setting and frequency feedback of inverter I and inverter II, and check the alarm information. When the system generates an alarm message, the human-machine interaction unit will control the sound and light alarm to operate until the alarm is eliminated.

[0039] Step 3: Establish a sequential control unit The sequential control unit includes the loading step control of the bale opener. When the equipment is started, the sequential control unit will guide the fiber raw material bale opener to execute the cyclic operation of "calculating actual parking weight" → "loading" → "loading completed" → "calculating deviation weight and total deviation weight" → "blank" until the operator issues a stop command on the touch screen. When the operator presses the start button, the sequential control unit sets the step of the bale opener to "calculate the actual parking weight" and sends an instruction to calculate the actual parking weight to the weight analysis unit. After that, the sequential control unit sets the step of the bale opener to "loading" and sends a loading instruction to the corner nail curtain speed control unit, the conveyor curtain speed control unit and the weight analysis unit. After receiving the loading completion signal sent by the weight analysis unit, the sequential control unit sets the step of the bale opener to "loading completion" and sends a loading completion instruction to the corner nail curtain speed control unit and the conveyor curtain speed control unit. After all bale openers are in the "loading completion" step, the sequential control unit sets the step of the bale opener to "calculate the deviation weight and the total deviation weight" and sends an instruction to calculate the deviation weight and the total deviation weight to the weight analysis unit. After that, the sequential control unit sets the step of the bale opener to "blank" and sends a blanking instruction to the blanking control unit. After receiving the blanking completion signal sent by the blanking control unit, the sequential control unit controls the bale opener to perform the next round of weighing, and sets the step of the bale opener to "calculate the actual parking weight", and repeats the cycle.

[0040] Step 4: Establish the corner nail curtain speed control unit The speed control unit of the spike curtain specifically includes calculating the feeding time, calculating the given frequency of the first frequency converter, obtaining the frequency feedback of the first frequency converter, and controlling the start of the first frequency converter. When the speed control unit of the spike curtain receives the feeding instruction from the sequence control unit, the speed control unit of the spike curtain starts the internal timer, begins timing, and transmits an enabling signal to the first frequency converter to control the start of the first frequency converter, causing the first motor to rotate and driving the spike curtain forward; when the speed control unit of the spike curtain receives the feeding completion instruction from the sequence control unit, the speed control unit of the spike curtain stops the internal timer, ends the timing, calculates the duration, defines this duration as the feeding time (T), and stops transmitting the enabling signal to the first frequency converter to control the stop of the first frequency converter, causing the first motor to stop and then causing the spike curtain to stop. According to the analysis of the production line statistical data, the feeding time should be controlled between 10 and 15 seconds. This time period can not only meet the cotton feeding efficiency of the bale opener backward, but also avoid the situation where the weighing reading rises too fast, resulting in overshoot and the fiber weight in the hopper being out of control. The feeding time is further divided into 6 time intervals. If the feeding time is 0 < T ≤ 5s, the feeding speed of the spike curtain is too fast, and the frequency of the first frequency converter is reduced by 2Hz; if the feeding time is 5 < T ≤ 10s, the feeding speed of the spike curtain is relatively fast, and the frequency of the first frequency converter is reduced by 1Hz; if the feeding time is 10 < T ≤ 15s, the feeding speed of the spike curtain is appropriate, and the frequency of the first frequency converter remains unchanged; if the feeding time is 15 < T ≤ 20s, the feeding speed of the spike curtain is relatively slow, and the frequency of the first frequency converter is increased by 1Hz; if the feeding time is 20 < T ≤ 50s, the feeding speed of the spike curtain is too slow, and the frequency of the first frequency converter is increased by 2Hz; if the feeding time is > 50s, there may be no raw materials on the conveying curtain, and the speed control unit of the spike curtain generates an alarm message, which is forwarded to the human-machine interaction unit by the sequence control unit, and finally the human-machine interaction unit controls the action of the audible and visual alarm to prompt the operator to handle it.

[0041] Step 5, establish the speed control unit of the conveying curtain The speed control unit of the conveying curtain specifically includes reading the status of the photoelectric switch, setting the given frequency of the second frequency converter, obtaining the frequency feedback of the second frequency converter, and controlling the start of the second frequency converter. When the speed control unit of the conveying curtain receives the feeding instruction from the sequence control unit, the speed control unit of the conveying curtain reads the status of the photoelectric switch. When the photoelectric switch is in the light-passing state, it is considered that the raw materials on the conveying curtain have not reached the position of the spike curtain. The speed control unit of the conveying curtain then transmits an enabling signal to the second frequency converter to control the start of the second frequency converter, causing the second motor to rotate and driving the conveying curtain forward; when the photoelectric switch is in the light-blocking state, it is considered that the raw materials on the conveying curtain have reached the position of the spike curtain. The speed control unit of the conveying curtain then stops transmitting the enabling signal to the second frequency converter to control the stop of the second frequency converter, causing the second motor to stop and then causing the conveying curtain to stop. The given frequency of the conveying curtain is set through the human-machine interaction unit, and the frequency setting range is 5 - 50Hz. The controller reads the feedback frequency of the frequency converter and displays it on the human-machine interaction unit.

[0042] Step 6: Build a gravimetric analysis unit The weight analysis unit includes 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 weighing sensor signal and converts it into the current weight data of the hopper fiber (W 当前 ), when the weight analysis unit receives the instruction to calculate the actual parking weight from the sequence control unit, the weight analysis unit calculates the actual parking weight of the current round according to the formula. 停车 =W 目标 +W 总偏差(n) (n is the weighing round, n=1 for the first weighing round, W 总偏差(1) =0); When the weight analysis unit receives the loading instruction from the sequence control unit, the weight analysis unit compares the current weight W in real time 当前 With W 停车 The relationship between 当前 ≥W 停车 When the weight analysis unit receives the instruction from the sequence control unit to calculate the deviation weight and the total deviation weight, the weight analysis unit calculates the deviation weight W. 偏差 , where W 偏差 = W 目标 -W 当前 ; Calculate the total deviation weight W 总偏差 , where 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, W 总偏差(1) =0); For example: the operator presses W on the touch screen 目标 Set to 2000g (W 目标 =2000g); In the first round of weighing, W 总偏差（1） =0, calculated W 停车 =W 目标 +W 总偏差（1） =2000+0=2000g, this round of weighing is based on 2000g. 当前 ≥W 停车 When the angle nail curtain stops, but during the stopping process, the angle nail curtain will still feed some raw materials into the hopper due to inertia. Therefore, after the weight stabilizes, there must be W 当前 >W 停车 , we assume that the additional amount of corner nail curtain is 200g, and the weight will not change significantly in a short time, then, W measured in this round is 当前 =2000+200=2200g; When calculating the deviation step, W偏差 = W 目标 -W 当前 =2000-2200=-200g, W 总偏差（2） =W 总偏差（1） +W 偏差 =0+(-200)=-200g; In the second round of weighing, W 停车 =W 目标 +W 总偏差（2） =2000+(-200)=1800g, this round of weighing is based on 1800g. 当前 ≥W 停车 When the angle nail curtain stops, but in the process of stopping, the angle nail curtain will still feed part of the raw materials into the hopper. According to our previous assumption, for example, an additional 200g is fed into the hopper. Then, the W weighed in this round is 当前 =1800+200=2000g; When calculating the 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=-200g; The weighing situation in subsequent rounds is similar to that in the second round and will not be repeated here.

[0043] Step 7: Establish a blanking control unit The material dropping control unit includes receiving the material dropping instruction from the sequence control unit and controlling the action of the solenoid valve through an electrical signal. When the material dropping control unit receives the material dropping instruction from the sequence control unit, the material dropping control unit controls the cylinder to extend through the solenoid valve, so that the movable door under the hopper opens and the material dropping begins. After maintaining the material dropping action for 2 seconds, the material dropping control unit controls the cylinder to retract through the solenoid valve, so that the movable door under the hopper closes, and sends a material dropping completion signal to the sequence control unit.

[0044] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A fiber raw material batching metering control system suitable for the production of spunlace nonwoven fabrics, characterized in that: The invention is provided in a fiber raw material bale opening machine, the fiber raw material bale opening machine comprises a conveying curtain (1), a corner nail curtain (2) and a hopper (3), wherein the conveying curtain (1) is arranged at the front side of the working station of the corner nail curtain (2), and the hopper (3) is arranged at the rear side of the working station of the corner nail curtain (2); the corner nail curtain (2) is arranged obliquely upward, a cotton leveling beater (4) is arranged on one side of the corner nail curtain (2), and a cotton stripping beater (5) is arranged on the other side of the corner nail curtain (2); a movable door is provided inside the material outlet of the hopper (3), and the opening and closing of the movable door is controlled by a cylinder (16); a rough cotton opener (7) is provided at the rear side of the working station of the hopper (3); The fiber raw material batching metering control system comprises a controller (8), a motor I (9) for driving the corner nail curtain (2), a motor II (10) for driving the conveying curtain (1), a photoelectric switch (11) provided on the observation window of the corner nail curtain (2), a weighing sensor (6) provided on the hopper (3), and a solenoid valve (12) for controlling the material dropping; a frequency converter I (13) is provided on the motor I (9), and the frequency converter I (13) and the controller (8) are connected via electrical signals; a frequency converter II (14) is provided on the motor II (10), and the frequency converter II (14) and the controller (8) are connected via electrical signals; the cylinder (16) is connected to the solenoid valve (12) via an air source pipe, and the solenoid valve (12) and the controller (8) are connected via electrical signals; the photoelectric switch (11) and the weighing sensor (6) are both connected to the controller (8) via electrical signals; The controller (8) comprises a sequence control unit (81), a human-machine interaction unit (82), a corner nail curtain speed control unit (83), a conveying curtain stop control unit (84), a weight analysis unit (85) and a material drop control unit (86). The corner nail curtain speed control unit (83), the conveying curtain stop control unit (84), the weight analysis unit (85) and the material drop control unit (86) are all connected to the sequence control unit (81). ) and the blanking control unit (86) are also connected to the human-machine interaction unit (82); the frequency converter I (13) and the corner nail curtain speed control unit (83) are connected via electrical signals; the frequency converter II (14) and the conveying curtain stop control unit (84) are connected via electrical signals; the photoelectric switch (11) and the conveying curtain stop control unit (84) are connected via electrical signals; the weighing sensor (6) and the weight analysis unit (85) are connected via electrical signals; and the solenoid valve (12) and the blanking control unit (86) are connected via electrical signals.

2. The fiber raw material batching metering control system suitable for spunlace nonwoven fabric production according to claim 1, characterized in that: The corner nail curtain speed control unit (83) comprises a frequency converter I operating frequency receiving module (831), a timer (832), a feeding time calculation module (833) and a frequency converter I operating frequency communication module (834); the frequency converter I operating frequency receiving module (831) is connected to the frequency converter I (13); the frequency converter I operating frequency receiving module (831) is also connected to the feeding time calculation module (833); the timer (832) is connected to the feeding time calculation module (833); the feeding time calculation module (833) is connected to the frequency converter I operating frequency communication module (834); and the frequency converter I operating frequency communication module (834) is connected to the frequency converter I (13); The inverter I operating frequency receiving module (831) is used to receive the operating frequency fed back from the inverter I (13) and monitor the operating status of the inverter I (13); Timer (832): used to calculate the time from the start to the stop of the corner nail curtain (2), which is the loading time; A feeding time calculation module (833): used to adjust the frequency setting value of the frequency converter I (13) in combination with the operating frequency and the feeding time fed back by the frequency converter I (13), and transmit the instruction to the frequency converter I operating frequency communication module (834); The inverter I operating frequency communication module (834) is used to send the adjusted inverter I (13) operating frequency instruction to the inverter I (13) to control the speed of the corner nail curtain (2).

3. The fiber raw material batching metering control system suitable for spunlace nonwoven fabric production according to claim 2 is characterized in that: The conveyor curtain stop control unit (84) comprises a photoelectric switch signal receiving module (841), a stop operation analysis module (842) and a frequency converter II operating frequency communication module (843), wherein the photoelectric switch signal receiving module (841) is connected to the photoelectric switch (11), the photoelectric switch signal receiving module (841) is also connected to the stop operation analysis module (842), the stop operation analysis module (842) is connected to the frequency converter II operating frequency communication module (843), and the frequency converter II operating frequency communication module (843) is connected to the frequency converter II (14); The photoelectric switch signal receiving module (841) is used to receive information fed back from the photoelectric switch (11) and monitor the position of the fiber raw material; A stop operation analysis module (842): used for analyzing the position of the fiber raw material, issuing an instruction to stop the transport of the conveyor curtain (1), and conveying the instruction to the inverter II operating frequency communication module (843); The inverter II operating frequency communication module (843) is used to receive and transmit the instruction to stop the operation of the conveying curtain (1), and control the conveying curtain (1) to stop.

4. The fiber raw material batching metering control system suitable for spunlace nonwoven fabric production according to any one of claims 1 to 3, characterized in that: The fiber raw material batching metering control system further comprises an audible and visual alarm (15) for prompting, and the controller (8) further comprises an early warning unit (87), the early warning unit (87) is connected to the human-computer interaction unit (82), and the early warning unit (87) is connected to the audible and visual alarm (15).

5. A fiber raw material batching control method suitable for the production of spunlace nonwoven fabrics, characterized in that: Including the control of the corner nail curtain speed: S1 Counting the feeding time: The angle nail curtain speed control unit uses the built-in timer to calculate the time from the start to the stop of the angle nail curtain, which is the feeding time; S2 Adjust the speed of the staple curtain: Compare the feeding time in step S1 with the preset optimal feeding time, and adjust the speed of the staple curtain according to the degree of difference.

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

7. The fiber raw material batching control method suitable for spunlace nonwoven fabric production according to claim 6, characterized in that: In step S2, If the feeding time is > 50s, the feeding of the staple curtain is abnormal, keep the speed of the staple curtain unchanged, and give an alarm.

8. The fiber raw material batching control method suitable for spunlace nonwoven fabric production according to claim 5, characterized in that: It also includes the control of the early stop weight: X1 sets the weighing target value W 目标 , start the fiber raw material bag opening machine; X2 calculates parking weight W 停车 , W 停车 =W 目标 +W 总偏差(n) ; Wherein, n is the weighing round, and n = 1 during the first weighing; X3 Start motor I and start feeding; X4 determines the current weight W of the fiber raw material 当前 With W 停车 the relationship between; If W 当前 ≥W 停车 When , the motor I is stopped and the subsequent loading completion step is entered; Conversely, control motor I to continue feeding; X5 Determine whether all the fiber raw material unpacking machines participating in the fiber raw material batching have completed feeding; If any one of the fiber raw material unpacking machines is not in the feeding completion step, continue to wait; If all the fiber raw material unpacking machines are in the feeding completion step, enter the subsequent deviation calculation program; X6 calculation deviation weight W 偏差 , W 偏差 = W 目标 -W 当前 ; Calculate the total deviation weight W 总偏差 , W 总偏差(n+1) =W 总偏差（n） +W 偏差 ; X7 Send a waste cotton instruction to the fiber raw material unpacking machine, and after waiting for 8 seconds, return to step X2.

9. A computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the control method described in any one of claims 5 - 8.

10. An information data processing terminal applicable to the fiber raw material batching metering control method for the production of spunlace non-woven fabrics described in any one of claims 5 - 8.

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