A fine cotton mixer dynamic weighing method

Abstract

The present application relates to the technical field of textile, in particular to a dynamic weighing method of fine cotton blending machine. The method comprises the following steps: S1, inputting total weight and the proportion corresponding to three weighing structures by manual before dynamic weighing of the fine cotton blending machine; S2, transmitting the first target material dropping weight and the actual material dropping weight of the three weighing mechanisms to the control system; S3, calculating the compensation amount of each weighing mechanism after each weighing, which is used for compensating the target material dropping weight of the next weighing; S4, calculating the mean error of the actual material dropping after m times of weighing of the three weighing mechanisms respectively; S5, compensating in the target material dropping weight of the three weighing mechanisms in the subsequent m+1 times of weighing. By dynamically adjusting the target material dropping weight of each weighing mechanism and compensating based on the actual weighing result, the error accumulation is effectively reduced, thereby the overall weighing precision is significantly improved, and the quality stability of the final product is improved.

Description

Technical Field

[0001] This invention relates to the field of textile technology, specifically to a dynamic weighing method for a fine cotton blending machine. Background Technology

[0002] In the textile industry, the fine blending machine is a key piece of equipment, and its performance directly affects the quality stability and production efficiency of the final product. A traditional fine blending machine typically consists of multiple weighing structures, a flat curtain, output beaters, and an electrical control cabinet. These weighing structures are designed to accurately weigh the incoming raw materials to ensure accurate mixing ratios. The flat curtain is responsible for evenly conveying the raw materials to each weighing structure and ensuring that the materials falling from each weighing structure are evenly stacked, laying a good foundation for subsequent opening and blending processes. The output beaters further open the raw materials conveyed by the flat curtain and smoothly transfer them to the next process.

[0003] However, in practical applications, the traditional dynamic weighing method for fine cotton blending machines faces certain challenges. Since each weighing structure needs to perform an independent weighing operation, simply setting the target weight by multiplying the total weight by its preset ratio often makes it difficult to accurately control the actual weighing ratio of each structure during operation, leading to deviations in the final blended material ratio. This deviation not only affects the product's quality stability but also increases the difficulty of adjustments in subsequent processes and production costs.

[0004] Improving weighing accuracy, reducing error accumulation, and better adapting to different types and specifications of raw materials are all urgent problems that need to be solved. Summary of the Invention

[0005] This invention provides a dynamic weighing method for a fine cotton blending machine, the purpose of which is to adjust the target material weight, improve the actual weighing accuracy, and reduce error accumulation.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: This invention provides a dynamic weighing method for a fine cotton blending machine, the method comprising: S1. Before dynamic weighing on the fine cotton blending machine, the total weight is manually entered. and the proportions corresponding to at least three weighing structures , , ; S2, the target material weight for the first weighing operation of the first weighing mechanism is... The actual weight of the first material feeding was ,Will The control system of the fine cotton blender is transmitted to the control system. The target material weight for the first unloading operation of the second weighing mechanism is: The actual weight of the first material feeding was ,Will The control system of the fine cotton blender is transmitted to the control system. The target material weight for the first unloading operation of the third weighing mechanism is: The actual weight of the first material feeding was ,Will The control system of the fine cotton blender is transmitted to the control system. S3. Calculate the compensation amount after each weighing by each weighing mechanism, which is used to compensate for the target material weight to be dropped in the next weighing. S4. Calculate the average error of the actual material drop after m weighings for each of the three weighing mechanisms. S5. In the subsequent m+1 weighings, the target unloading weight of the three weighing mechanisms is compensated. S6. Repeat steps S2 to S5 to calculate the target value for the next weighing, and repeat the cycle.

[0007] Furthermore, in step S3, The compensation amount after the m-th weighing of the first weighing mechanism is: ; The compensation amount after the m-th weighing of the second weighing mechanism is: ; The compensation amount after the m-th weighing of the third weighing mechanism is: .

[0008] Furthermore, in step S4, the average error of the actual material discharge after m weighings by the first weighing mechanism is... The value is: the average value of m weighings performed by the first weighing mechanism minus the target material weight. The formula is as follows:

[0009] in, This represents the total weight after m weighings by the first weighing mechanism.

[0010] Furthermore, in step S5, the target unloading weight of the first weighing mechanism in the (m+1)th weighing is: .

[0011] Furthermore, in step S4, the average error of the second weighing mechanism after m weighings... The value is: the average of m weighings performed by the second weighing mechanism minus the target material weight. The formula is as follows:

[0012] in, This represents the total weight after m weighings by the second weighing mechanism.

[0013] Furthermore, in step S5, the target unloading weight of the second weighing mechanism in the (m+1)th weighing is: .

[0014] Furthermore, in step S4, the average error of the third weighing mechanism after m weighings... The value is: the average of m weighings performed by the third weighing mechanism minus the target material weight. The formula is as follows:

[0015] in, This represents the total weight after m weighings by the third weighing mechanism.

[0016] Furthermore, in step S5, the target unloading weight of the third weighing mechanism in the (m+1)th weighing is: .

[0017] The beneficial effects achieved by this invention are as follows: This invention provides a dynamic weighing method for a fine cotton blending machine. By dynamically adjusting the target material weight of each weighing mechanism and compensating based on the actual weighing results, it effectively reduces error accumulation, thereby significantly improving the overall weighing accuracy and helping to enhance the quality stability of the final product.

[0018] This invention discloses a dynamic weighing method for a fine cotton blending machine. This method can automatically calculate and compensate for errors, reducing the need for manual intervention, lowering the difficulty of adjustments in subsequent processes, and improving production efficiency. At the same time, it also reduces the additional costs that may arise from frequent adjustments. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a logic diagram of the target weight for the first weighing mechanism m+1 times in a dynamic weighing method for a fine cotton blending machine. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

[0022] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0024] This invention provides a dynamic weighing method for a fine cotton blending machine, the method comprising: S1. Before dynamic weighing on the fine cotton blending machine, the total weight is manually entered. and the proportions corresponding to at least three weighing structures , , The total weight and proportion parameters are manually entered, providing basic data for subsequent dynamic weighing and ensuring that the weighing system knows the expected weight distribution.

[0025] The weighing structure of the fine cotton blending machine has three weighing sensors distributed at the front and back of the weighing hopper, and a weighing terminal for reading the real-time weight of the weighing hopper. The PLC of the fine cotton blending machine reads the real-time weight of each weighing structure via 485 communication and records the final actual material weight inside the PLC.

[0026] The fine cotton blending machine also includes a flat curtain, an output beater, and an electrical control cabinet. The incoming raw materials are accurately weighed near the weighing structure; the flat curtain is used to transport the raw materials and ensures that the raw materials falling from the three weighing structures are evenly stacked together; the output beater loosens the raw materials transported by the flat curtain and transfers them to the next process.

[0027] S2, the target material weight for the first weighing operation of the first weighing mechanism is... The actual weight of the first material feeding was ,Will The control system of the fine cotton blender is transmitted to the control system. The target material weight for the first unloading operation of the second weighing mechanism is: The actual weight of the first material feeding was ,Will The control system of the fine cotton blender is transmitted to the control system. The target material weight for the first unloading operation of the third weighing mechanism is: The actual weight of the first material feeding was ,Will The control system of the fine cotton blender is transmitted to the control system. The initial target discharge weight for each weighing mechanism is set, and the actual discharge weight is recorded to provide benchmark data for dynamic adjustments. This process ensures the initial accuracy of the system and the reliability of subsequent compensation mechanisms.

[0028] S3. Calculate the compensation amount after each weighing by each weighing mechanism to compensate for the target weight of the material to be dropped in the next weighing. By calculating the compensation amount after each weighing, the system can identify and quantify the difference between the actual weight and the target weight. This allows the system to make corresponding adjustments in subsequent weighings, reduce cumulative errors, and improve long-term weighing accuracy.

[0029] S4. Calculate the average error of the actual material drop after m weighings at each of the three weighing mechanisms; calculate the average error of the actual material drop after multiple weighings to provide data support for the next step of compensation. This step helps the system understand the systematic deviations that exist in the weighing process, so as to make more accurate adjustments.

[0030] S5. In the subsequent m+1 weighings, the target unloading weight of the three weighing mechanisms is compensated; the compensation is applied in subsequent weighings to ensure that the target unloading weight of each weighing mechanism is closer to the actual requirement and to reduce error accumulation.

[0031] S6. Repeat steps S2 to S5 to calculate the target value for the next weighing, and repeat this cycle. By continuously repeating steps S2 to S5, the system can continuously optimize the weighing process, ensuring high accuracy even when the properties of the raw materials change or the machine wears out.

[0032] In step S3 The compensation amount after the m-th weighing of the first weighing mechanism is: ; The compensation amount after the m-th weighing of the second weighing mechanism is: ; The compensation amount after the m-th weighing of the third weighing mechanism is: .

[0033] in: This represents the actual weight after the m-th weighing by the first weighing mechanism. The target weight after the m-th weighing by the first weighing mechanism; This represents the actual weight after the m-th weighing by the second weighing mechanism. The target weight after the m-th weighing by the second weighing mechanism; This represents the actual weight after the m-th weighing by the third weighing mechanism. The target weight is the weight after the m-th weighing by the third weighing mechanism.

[0034] The first weighing mechanism: In step S4, the mean error of the actual material discharge after m weighings by the first weighing mechanism is... The value is: the average value of m weighings performed by the first weighing mechanism minus the target material weight. The formula is as follows:

[0035] in, This represents the total weight after m weighings by the first weighing mechanism.

[0036] In step S5, the target unloading weight of the first weighing mechanism in the (m+1)th weighing is: .

[0037] The second weighing mechanism: In step S4, the mean error of the second weighing mechanism after m weighings The value is: the average of m weighings performed by the second weighing mechanism minus the target material weight. The formula is as follows:

[0038] in, This represents the total weight after m weighings by the second weighing mechanism.

[0039] In step S5, the target unloading weight of the second weighing mechanism in the (m+1)th weighing is:

[0040] .

[0041] The third weighing mechanism: In step S4, the mean error of the third weighing mechanism after m weighings The value is: the average of m weighings performed by the third weighing mechanism minus the target material weight. The formula is as follows:

[0042] in, This represents the total weight after m weighings by the third weighing mechanism.

[0043] In step S5, the target unloading weight of the third weighing mechanism in the (m+1)th weighing is: .

[0044] In one embodiment, m equals 10. After weighing 10 buckets, the average of the actual weight is calculated and compared with the set weight. Based on the error between the two, weight compensation is performed in the next 10 buckets.

[0045] After weighing 10 dou (a unit of dry measure), the target weight of the first weighing mechanism is:

[0046] After weighing 10 dou, the target weight of the second weighing mechanism is

[0047]

[0048] After weighing 10 dou, the target weight of the second weighing mechanism is

[0049]

[0050] like Figure 1 As shown in the figure and This method uses absolute values, inputting the weights from 10 weighings into the formula. By dynamically adjusting the target weight for each weighing mechanism and compensating based on the actual weighing results, it effectively reduces error accumulation, significantly improving overall weighing accuracy and contributing to the quality stability of the final product. This method automatically calculates and compensates for errors, reducing the need for manual intervention, simplifying adjustments in subsequent processes, and increasing production efficiency. It also reduces the additional costs that might arise from frequent adjustments.

[0051] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A dynamic weighing method for a fine cotton blending machine, characterized in that, The method includes: S1. Before dynamic weighing on the fine cotton blending machine, the total weight is manually entered. and the proportions corresponding to at least three weighing structures , , ; S2, the target material weight for the first weighing operation of the first weighing mechanism is... The actual weight of the first feeding was ,Will The control system of the fine cotton blender is transmitted to the control system. The target material weight for the first unloading operation of the second weighing mechanism is: The actual weight of the first feeding was ,Will The control system of the fine cotton blender is transmitted to the control system. The target material weight for the first unloading operation of the third weighing mechanism is: The actual weight of the first feeding was ,Will The control system of the fine cotton blender is transmitted to the control system. S3. Calculate the compensation amount after each weighing by each weighing mechanism, which is used to compensate for the target material weight to be dropped in the next weighing. In step S3: The compensation amount after the m-th weighing of the first weighing mechanism is: ; The compensation amount after the m-th weighing of the second weighing mechanism is: ; The compensation amount after the m-th weighing of the third weighing mechanism is: ; S4. Calculate the average error of the actual material drop after m weighings for each of the three weighing mechanisms. In step S4, the mean error of the actual material discharge after m weighings by the first weighing mechanism is... The value is: the average of m weighings performed by the first weighing mechanism minus the target material weight. The formula is as follows: in, The total weight after m weighings by the first weighing mechanism; In step S4, the mean error of the second weighing mechanism after m weighings The value is: the average of m weighings performed by the second weighing mechanism minus the target material weight. The formula is as follows: in, This represents the total weight after m weighings by the second weighing mechanism. In step S4, the mean error of the third weighing mechanism after m weighings The value is: the average of m weighings performed by the third weighing mechanism minus the target material weight. The formula is as follows: in, This represents the total weight after m weighings by the third weighing mechanism. S5. In the subsequent m+1 weighings, the target unloading weight of the three weighing mechanisms is compensated. S6. Repeat steps S2 to S5 to calculate the target value for the next weighing, and repeat the cycle.

2. The dynamic weighing method for a fine cotton blending machine according to claim 1, characterized in that, In step S5, the target unloading weight of the first weighing mechanism in the (m+1)th weighing is: 。 3. The dynamic weighing method for a fine cotton blending machine according to claim 1, characterized in that, In step S5, the target unloading weight of the second weighing mechanism in the (m+1)th weighing is: 。 4. The dynamic weighing method for a fine cotton blending machine according to claim 1, characterized in that, In step S5, the target unloading weight of the third weighing mechanism in the (m+1)th weighing is: 。

Images