Intelligent paint mixing method and system

Abstract

The invention discloses an intelligent paint mixing method and system, and the method comprises the steps: obtaining the formula information of a target paint vehicle, the formula information comprises three materials, i.e., a first material, a second material and a third material, and the specific gravity relation of the three materials; calculating the target weight of the three materials according to the target weight of the target paint vehicle and the specific gravity relationship of the three materials; and three materials are sequentially injected into the batching barrel. A weight threshold value is set for each kind of materials, the materials enter the limiting interval after reaching the weight threshold value, and the discharging speed is gradually decreased in the limiting interval. And finally, the speed is reduced to a controllable speed, so that the actual weight is close to the target weight at the moment of reaching the target weight.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic paint mixing, and in particular to an intelligent paint mixing method and system. Background Art

[0002] In the existing paint mixing method, the second material needs to be added after the first material is added, and the third material is added after the second material is added. When too much of one material is added, the weight of the other two materials is automatically recalculated according to the ratio in the formula, and then added again.

[0003] Generally speaking, paint is usually mixed according to demand. If too much is mixed and cannot be used in time, it will cause waste.

[0004] Of course, the accuracy of material discharging can be ensured by using a high-precision discharging device. However, in actual production, the high-precision discharging device is expensive and cumbersome to control. For general enterprises, it is not worth the cost to use it for paint mixing.

[0005] Chinese patent application CN200410024321.1 discloses an online weighing and batching method based on feeding speed control, realizing a stepless speed regulation and batching method for automatic control of on-site production, which can solve the high-precision weighing of various materials with complex physical properties and improve production process control. The online weighing and batching method determines the feeding speed V by determining the speed drop index α and the initial feeding speed V0, and determines the material accumulation amount W in combination with the speed change point time t.

[0006] Similarly, the above-mentioned existing technology requires high-precision feeding equipment and complex control methods to be implemented, which is difficult for general manufacturers to implement. Summary of the invention

[0007] The object of the present invention is to provide an intelligent paint mixing method and system, which can partially solve or alleviate the above-mentioned deficiencies in the prior art and effectively avoid waste caused by excessive injection when injecting materials.

[0008] In order to solve the above-mentioned technical problems, the present invention specifically adopts the following technical solutions: A first aspect of the present invention is to provide an intelligent paint mixing method, comprising: Obtaining formula information of a target paint according to the input basic information of the part to be processed, wherein the formula information includes three materials, namely, a first material, a second material, and a third material, and a specific gravity relationship of the three materials; Calculate the target weight of each of the three materials according to the target weight of the first material target paint entered by the user and the specific gravity relationship of the three materials; Three materials are sequentially injected into the dispensing barrel. When the first material is injected, a weight threshold of the first material is set. When the actual weight of the first material injected into the dispensing barrel reaches the weight threshold of the first material, the first material restriction interval is entered. The first material restriction interval is divided into several levels, and each level of the first material restriction interval corresponds to a first material unloading speed. Several first material unloading speeds decrease from large to small. When the actual weight of the first material reaches the first material target weight, the unloading of the first material is completed. When injecting the second material, a second material weight threshold is set, and when the actual weight of the second material injected into the dispensing barrel reaches the second material weight threshold, the second material restriction interval is entered; the second material restriction interval is divided into several levels, and each level of the second material restriction interval corresponds to a second material unloading speed; several second material unloading speeds decrease from large to small; when the actual weight of the second material reaches the second material target weight, the unloading of the second material is completed; When injecting the third material, a third material weight threshold is set. When the actual weight of the third material injected into the dispensing barrel reaches the third material weight threshold, the third material restriction interval is entered; the third material restriction interval is divided into several levels, and each level of the third material restriction interval corresponds to a third material unloading speed; several third material unloading speeds decrease from large to small; when the actual weight of the third material reaches the third material target weight, the unloading of the third material is completed.

[0009] As an improvement, the first material weight threshold is A percentage of the first material target weight, the second material weight threshold is B percentage of the second material target weight, the third material weight threshold is C percentage of the third material target weight, and A>B>C; The number of levels in the first material restriction interval is less than the number of levels in the second material restriction interval and less than the number of levels in the third material restriction interval.

[0010] As an improvement, the material unloading speed of the last stage of the third material restriction interval is lower than the material unloading speed of the last stage of the second material restriction interval and the first material restriction interval.

[0011] As an improvement, the weight threshold of the first material is 91% of the target weight of the first material, and 91% to 100% of the target weight of the first material is the first material restriction interval; the first material restriction interval is evenly divided into 3 levels, and the unloading speed of each level of the first material restriction interval is 30% lower than that of the previous level; The weight threshold of the second material is 85% of the target weight of the second material, and 85% to 100% of the target weight of the second material is the second material restriction interval; the second material restriction interval is evenly divided into 5 levels, and the unloading speed of each level of the second material restriction interval is 18% lower than that of the previous level; The weight threshold of the third material is 80% of the target weight of the third material, and 80%~100% of the target weight of the third material is the third material restriction range; the second material restriction range is evenly divided into 10 levels, and the unloading speed of each level of the third material restriction range is reduced by 9.5% compared with the previous level.

[0012] As an improvement, when the actual weight of the material reaches 100% of the target weight, it will not respond to the command to unload the material.

[0013] As an improvement, a dynamic progress bar is generated according to the actual weight of the material, including: When the actual weight of the first material injected into the dispensing barrel reaches the first material weight threshold, an early warning is started; the early warning is divided into several early warning levels, and the early warning levels correspond to the levels of the first material restriction interval; and each early warning level adopts a different early warning method; When the actual weight of the second material injected into the dispensing barrel reaches the second material weight threshold, an early warning is started; the early warning is divided into several early warning levels, and the early warning levels correspond to the levels of the second material restriction interval; and each early warning level adopts a different early warning method; When the actual weight of the third material injected into the dispensing barrel reaches the third material weight threshold, an early warning is initiated; the early warning is divided into several early warning levels, and the early warning levels correspond to the levels of the third material restriction interval; and each early warning level adopts a different early warning method.

[0014] As an improvement, different warning levels correspond to different progress bar colors, or / and different warning levels emit different alarm sounds.

[0015] As an improvement, before injecting the material into the batching barrel, the feeding speed is calibrated. The specific steps include: calibrating the feeding port from fully closed to fully open as 0%~100% feeding speed.

[0016] As an improvement, when the weight of the material accounts for more than 50% of the entire paint, the actual weight is considered to have reached the target weight when the error between the actual weight of the material and the target weight is ±2.5%; When the weight of the material accounts for 25% to 50% of the entire paint, and the error between the actual weight of the material and the target weight is ±2.0%, the actual weight is considered to have reached the target weight; When the proportion of the material accounts for less than 25% of the entire paint, and the error between the actual weight of the material and the target weight is ±1.5%, the actual weight is considered to have reached the target weight.

[0017] A second aspect of the present invention is to provide an intelligent paint mixing system, comprising: A formula acquisition module, used to acquire the formula information of the target paint, wherein the formula information includes three materials, namely, a first material, a second material and a third material, and a specific gravity relationship of the three materials; A target weight calculation module, used to calculate the target weights of the three materials according to the target weight of the target paint and the specific gravity relationship of the three materials; The material injection module is used to inject material into the dispensing barrel. When injecting the first material, a first material weight threshold is set. When the actual weight of the first material injected into the dispensing barrel reaches the first material weight threshold, the first material restriction interval is entered; the first material restriction interval is divided into several levels, and each level of the first material restriction interval corresponds to a first material unloading speed; several first material unloading speeds decrease from large to small; when the actual weight of the first material reaches the first material target weight, the unloading of the first material is completed; When injecting the second material, a second material weight threshold is set, and when the actual weight of the second material injected into the dispensing barrel reaches the second material weight threshold, the second material restriction interval is entered; the second material restriction interval is divided into several levels, and each level of the second material restriction interval corresponds to a second material unloading speed; several second material unloading speeds decrease from large to small; when the actual weight of the second material reaches the second material target weight, the unloading of the second material is completed; When injecting the third material, a third material weight threshold is set. When the actual weight of the third material injected into the dispensing barrel reaches the third material weight threshold, the third material restriction interval is entered; the third material restriction interval is divided into several levels, and each level of the third material restriction interval corresponds to a third material unloading speed; several third material unloading speeds decrease from large to small; when the actual weight of the third material reaches the third material target weight, the unloading of the third material is completed.

[0018] The benefit of the present invention lies in that a weight threshold is set for each material, and before the weight threshold is reached, the material unloading speed is 100% of the maximum unloading speed. After reaching the weight threshold, the restricted interval is entered, and within the restricted interval, the unloading speed will decrease step by step. It will eventually drop to a controllable speed, thereby ensuring that the actual weight approaches the target weight at the moment the target weight is reached. In addition, the material is unloaded in a step-by-step decreasing manner to avoid jitter caused by a sudden speed reduction. This jitter is difficult to control, so the invention avoids the occurrence of jitter by gradually reducing the speed.

[0019] Since the three materials are unloaded in different orders, after the first material is unloaded, even if there is a certain deviation, it is convenient to adjust the subsequent two materials. After the second material is unloaded, if there is a deviation, the first material that has been unloaded will also need to be readjusted. After the third material is unloaded, if there is a deviation, both the first and second materials that have been unloaded will need to be readjusted. For the above reasons, on the basis of ensuring the unloading speed, the restriction range of the first material is the narrowest, the slope of the deceleration curve is the steepest, and the tail speed is also the largest. The restriction range of the second material is second, the slope of the deceleration curve is slightly slower, and the tail speed is equivalent to that of the first material. The restriction range of the third material is the widest, the slope of the deceleration curve is the slowest, and the tail speed is also the lowest.

[0020] The above setting method not only ensures the speed and efficiency of material feeding, but also takes into account accuracy. A greater feeding speed is given to materials that are easy to adjust, while accuracy is given priority to materials that have a greater impact, making the entire paint mixing process more efficient and accurate.

[0021] The present invention achieves the purpose of accurate material cutting by adjusting the material cutting strategy, does not require high-precision material cutting equipment, and does not require complicated control programs. It is low-cost and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale. Obviously, the drawings described below are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without paying creative labor.

[0023] Figure 1 This is a flow chart of Embodiment 1 of the present invention.

[0024] Figure 2 The figure is a schematic diagram of a progress bar according to an embodiment of the present invention.

[0025] Figure 3 This is a structural diagram of the second embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram showing how the system automatically calculates the target weights for each of the three materials.

[0027] Figure 5 It is the formula information corresponding to various paints in the system database. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 making creative work are within the scope of protection of the present invention.

[0029] Herein, suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meanings by themselves. Therefore, "module", "component" or "unit" can be used mixedly.

[0030] In this document, the terms "upper", "lower", "inner", "outer", "front", "back", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In this document, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or 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.

[0032] Herein "and / or" includes any and all combinations of one or more of the associated listed items.

[0033] Herein, "plurality" means two or more than two, ie, it includes two, three, four, five, etc.

[0034] Embodiment 1: Figure 1 As shown, the present invention provides an intelligent paint mixing method, comprising: S1 obtains the formula information of the target paint according to the input basic information of the part to be processed, wherein the formula information includes three materials, namely, a first material, a second material and a third material, and the specific gravity relationship of the three materials.

[0035] In some embodiments, the user enters basic information of the parts to be processed in the system interface, such as the workpiece model, material, output, and the color of the paint to be mixed.

[0036] Each color of paint has a corresponding formula, including ingredients and the weight relationship between the ingredients. The purpose of this step is to automatically obtain the formula of the pre-stored target color paint from the database, so as to obtain the ratio relationship between the three materials. For example, see Figure 5 Depending on the ratio of the three materials, different colors of paint can be mixed, so the specific gravity relationship between the materials is very important.

[0037] S2 calculates the target weights of the three materials according to the entered target weight of the first material and the specific gravity relationship of the three materials.

[0038] Under the premise of knowing the target weight of the target paint and the specific gravity relationship between the three materials, the system will automatically calculate the target weight of each of the three materials. Figure 4 .

[0039] For example, if 100 kg of paint needs to be mixed, and the weight ratio of the three materials is 2:3:5, then the target weight of the first material (for example, original paint of a certain color) is 20 kg, the target weight of the second material (for example, curing agent) is 30 kg, and the target weight of the third material (for example, thinner) is 50 kg.

[0040] S3 injects three materials into the batching barrel in sequence.

[0041] In addition, before injecting materials into the dispensing barrel, the feeding speed needs to be calibrated. In this embodiment, the feeding speed is represented by the opening of the opening of the feeding device. Specifically, the feeding port is calibrated from fully closed to fully open as 0%~100% feeding speed. Of course, the feeding speed can also be calibrated in other ways, such as by the opening of the valve, by the dumping angle, etc., which is not limited in this implementation.

[0042] When injecting the first material, a first material weight threshold is set, and when the actual weight of the first material injected into the dispensing barrel reaches the first material weight threshold, the first material restriction interval is entered; the first material restriction interval is divided into several levels, and each level of the first material restriction interval corresponds to a first material unloading speed; several first material unloading speeds decrease from large to small; when the actual weight of the first material reaches the first material target weight, the unloading of the first material is completed.

[0043] When injecting the second material, a second material weight threshold is set, and when the actual weight of the second material injected into the dispensing barrel reaches the second material weight threshold, the second material restriction interval is entered; the second material restriction interval is divided into several levels, and each level of the second material restriction interval corresponds to a second material unloading speed; several second material unloading speeds decrease from large to small; when the actual weight of the second material reaches the second material target weight, the unloading of the second material is completed; When injecting the third material, a third material weight threshold is set. When the actual weight of the third material injected into the dispensing barrel reaches the third material weight threshold, the third material restriction interval is entered; the third material restriction interval is divided into several levels, and each level of the third material restriction interval corresponds to a third material unloading speed; several third material unloading speeds decrease from large to small; when the actual weight of the third material reaches the third material target weight, the unloading of the third material is completed.

[0044] It is understandable that when the actual weight of the material reaches 100% of the target weight, there will be no response to the material unloading command to avoid accidental addition of material due to operational errors.

[0045] In this embodiment, a weight threshold is set for each material. Before reaching the weight threshold, the material unloading speed is 100% of the maximum unloading speed. After reaching the weight threshold, it enters the restricted interval. Within the restricted interval, the unloading speed will decrease step by step. It will eventually drop to a controllable speed to ensure that the actual weight is close to the target weight at the moment the target weight is reached. In addition, the material is unloaded in a step-by-step decreasing manner to avoid jitter caused by sudden speed reduction. This jitter is difficult to control, so in this embodiment, the jitter is avoided by step-by-step speed reduction.

[0046] Since the three materials are unloaded in different orders, after the first material is unloaded, even if there is a certain deviation, it is convenient to adjust the subsequent two materials. After the second material is unloaded, if there is a deviation, the first material that has been unloaded will also need to be readjusted. After the third material is unloaded, if there is a deviation, both the first and second materials that have been unloaded will need to be readjusted. For the above reasons, on the basis of ensuring the unloading speed, the restriction range of the first material is the narrowest, the slope of the deceleration curve is the steepest, and the tail speed is also the largest. The restriction range of the second material is second, the slope of the deceleration curve is slightly slower, and the tail speed is equivalent to that of the first material. The restriction range of the third material is the widest, the slope of the deceleration curve is the slowest, and the tail speed is also the lowest.

[0047] The above setting method not only ensures the speed and efficiency of material feeding, but also takes into account accuracy. A greater feeding speed is given to materials that are easy to adjust, while accuracy is given priority to materials that have a greater impact, making the entire paint mixing process more efficient and accurate.

[0048] Specifically, the first material weight threshold is A percentage of the first material target weight, the second material weight threshold is B percentage of the second material target weight, the third material weight threshold is C percentage of the third material target weight, and A>B>C; The number of levels in the first material restriction interval is less than the number of levels in the second material restriction interval and less than the number of levels in the third material restriction interval. The unloading speed of the last level in the third material restriction interval is lower than the unloading speed of the last level in the second material restriction interval and the first material restriction interval.

[0049] More specifically, the weight threshold of the first material is 91% of the target weight of the first material, and 91%~100% of the target weight of the first material is the first material restriction interval; the first material restriction interval is evenly divided into 3 levels, and the material discharge speed of each level of the first material restriction interval is 30% lower than that of the previous level; its tail speed of material discharge is 10%. In other words, for the first material restriction interval, 91%~94% of the target weight is the first level, and its material discharge speed is 70% of the full speed; 95%~97% of the target weight is the second level, and its material discharge speed is 40% of the full speed; 98%~100% of the target weight is the third level, and its material discharge speed is 10% of the full speed.

[0050] The weight threshold of the second material is 85% of the target weight of the second material, and 85%~100% of the target weight of the second material is the second material restriction range; the second material restriction range is evenly divided into 5 levels, and the unloading speed of each level of the second material restriction range is 18% lower than that of the previous level; the tail speed of the unloading is also 10%.

[0051] The weight threshold of the third material is 80% of the target weight of the third material, and 80%~100% of the target weight of the third material is the third material restriction interval; the second material restriction interval is divided into 10 levels on average, and the unloading speed of each level of the third material restriction interval is 9.5% lower than that of the previous level. The final unloading speed is 5%.

[0052] It is also worth noting that the so-called "actual weight reaches the target weight" in the present invention does not mean that the actual weight = the target weight. Rather, a certain deviation is allowed. Specifically, in this embodiment, when the proportion of the material accounts for more than 50% of the entire paint, the actual weight of the material is considered to have reached the target weight when the error between the actual weight of the material and the target weight is within ±2.5%; When the weight of the material accounts for 25% to 50% of the entire paint, and the error between the actual weight of the material and the target weight is ±2.0%, the actual weight is considered to have reached the target weight; When the proportion of the material accounts for less than 25% of the entire paint, and the error between the actual weight of the material and the target weight is ±1.5%, the actual weight is considered to have reached the target weight.

[0053] The above deviations are within the allowable range in the project, ensuring the smooth progress of paint mixing.

[0054] In addition, if Figure 2As shown, in order to make the entire paint mixing and material discharging process more intuitive, the present invention can generate a dynamic progress bar according to the actual weight of the material, specifically including: When the actual weight of the first material injected into the dispensing barrel reaches the first material weight threshold, an early warning is started; the early warning is divided into several early warning levels, and the early warning levels correspond to the levels of the first material restriction interval; and each early warning level adopts a different early warning method; When the actual weight of the second material injected into the dispensing barrel reaches the second material weight threshold, an early warning is started; the early warning is divided into several early warning levels, and the early warning levels correspond to the levels of the second material restriction interval; and each early warning level adopts a different early warning method; When the actual weight of the third material injected into the dispensing barrel reaches the third material weight threshold, an early warning is initiated; the early warning is divided into several early warning levels, and the early warning levels correspond to the levels of the third material restriction interval; and each early warning level adopts a different early warning method.

[0055] For example, when the first material injection reaches the first material weight threshold, i.e., 91%, an early warning is started, and the early warning is divided into three levels, and each early warning level uses a different early warning method, such as a different progress bar color and alarm sound. For example, the first-level early warning is yellow, the second-level early warning is orange, and the third-level early warning is red. The alarm sound also changes from slow to rapid according to the increase in the early warning level. The early warning methods of the second and third materials are similar, and will not be repeated in this embodiment.

[0056] The existing paint mixing method is to add three materials to the barrel in sequence, but when any paint is added too much during the paint mixing process, the weight of other paints will be automatically added according to the ratio. For example, crude oil, curing agent and diluent are added to the barrel in sequence, but when the curing agent is added too much, the amount of crude oil and diluent will be automatically added. Similarly, if the diluent is too much, the amount of crude oil and curing agent B will be automatically increased. This repetition makes the final paint much heavier than expected. If it is the trial production stage, the excess will cause waste. If it is the production stage, since each component is sprayed multiple times, this problem will be more obvious. Even if the paint obtained from the last mixing can be directly used as the starting amount in the next mixing process, it is precisely because of the last stock that the freedom of the next mixing is limited. Only by using high-precision equipment to mix the paint can it be achieved to avoid the final paint being not much different from the expected weight. However, for some small-scale enterprises with a relatively single or monotonous product line (that is, the product line is not rich), purchasing high-precision equipment will undoubtedly greatly increase their costs. In addition, if you mix a little more each time, it means that the ratio must be recalculated during each mixing process.

[0057] In view of this, in the present invention, different levels of warning are set for each material. When the amount approaches the target amount, the speed of dumping the material is lower, so as to avoid multiple deployments as much as possible and achieve one deployment.

[0058] Example 2: As mentioned above, in most cases in actual operation, the actual weight of each material cannot be 100% equal to the target weight, and a certain deviation is allowed. The combined effect of the deviations of the three materials leads to the actual paint color and viscosity (for example, the actual weight of crude oil is less than the target weight, but the actual weights of curing agent and diluent are more than their respective target weights). Therefore, even if the deviation of each material is within a certain range, some customers with very high quality requirements still need to strictly control it. Therefore, the material discharge speed of each material limit interval of the next material can be adjusted according to the deviation size of the previous material.

[0059] For example, if the positive deviation between the final actual weight of the first material and the target weight (i.e., the absolute value of the difference between the two when the actual weight ≥ the target weight) is greater than the first preset threshold, at this time, since the target weights of the second material and the third material will not be recalculated, but the deviation is within the allowable range, the unloading speed of the last level in the second material restriction interval corresponding to the second material can be appropriately relaxed, for example, the unloading speed of the last level can be appropriately increased, or kept unchanged; if the negative deviation between the final actual weight of the first material and the target weight (i.e., the absolute value of the difference between the two when the actual weight < the target weight) is greater than the first preset threshold, at this time, since the unloading speed in the second material restriction interval corresponding to the second material itself is gradually decreasing, if the unloading speed of the last level is to be further reduced, very precise instruments are required for control. Therefore, in this embodiment, the unloading speed of the last level is not further reduced, but the unloading speed of the first level in the sorting is reduced.

[0060] Similarly, if the positive deviation between the final actual weight of the second material and the target weight (i.e., the absolute value of the difference between the two when the actual weight ≥ the target weight) is greater than the second preset threshold, the unloading speed of the last level within the third material restriction interval corresponding to the third material can be appropriately relaxed, for example, the unloading speed of the last level can be appropriately increased, or kept unchanged; if the negative deviation between the final actual weight of the second material and the target weight (i.e., the absolute value of the difference between the two when the actual weight < the target weight) is greater than the second preset threshold, the unloading speed of the first level of the sorting can be reduced. In this way, one-time allocation can be achieved as much as possible, while minimizing the impact of the interaction of the deviations of the three materials.

[0061] Example 3: Since the painting of a part to be processed is completed in multiple times, and multiple trial productions are required before formal production, the paint color and viscosity of the corresponding ratio are delivered to the customer. If the paint color and viscosity of the trial production do not meet the customer's expectations, the customer will re-adjust the ratio and then conduct trial production until the target ratio is found, and then spray paint multiple times. However, when the customer specifies the adjustment ratio, it is not combined with the actual situation of the first-line factory, such as the specific situation of the equipment, which will inevitably increase the number of trial productions.

[0062] In view of this, the present invention also provides another intelligent paint mixing method, which comprises the steps of: S101 determines whether the current mode is trial production mode or production mode. If it is trial production mode, execute step S103; if it is production mode, execute steps S2-S3.

[0063] Usually, the system interface allows users to choose whether to enter the trial production mode or the production mode. Usually, the customer will provide the recipe information, but in the actual process, due to the influence of equipment and environment, the color depth and viscosity of the paint prepared according to the specific gravity relationship may not meet expectations. Therefore, repeated trial production and adjustment of the specific gravity relationship are required. That is, the trial production mode is to determine the specific gravity relationship of the paint to achieve the expected color depth and expected viscosity; and the production mode is to perform multiple painting based on the specific gravity relationship determined in the trial production stage, so as to obtain the expected workpiece.

[0064] S103 When the target weight of the first material is entered, determine whether the target weight is greater than the preset minimum trial production threshold. If it is greater than the preset minimum trial production threshold, execute steps S2-S3 in the above embodiment, then obtain the trial production results based on the paint adjustment, and execute step S104.

[0065] In some embodiments, whether in the trial production stage or the production stage, the target weight of the first material is manually input, which is bound to result in errors. Therefore, it is necessary to determine whether the entered target weight meets the conditions: the upper limit of the input is the capacity of a material barrel (the system can obtain it by scanning the QR code on the material barrel), and the lower limit is a preset weight threshold. Usually, if the input is larger and exceeds the capacity of a material barrel, the system will automatically correct it to the maximum capacity of the material barrel. If the input is smaller, for example, lower than the preset minimum trial production threshold, a trial production cannot be completed. Therefore, only when it is determined that it is greater than the preset minimum trial production threshold, the subsequent steps are started, otherwise it will prompt to re-enter.

[0066] In some embodiments, the trial production result includes: a first difference quantification parameter between the actual color depth and the expected color depth, and a second difference quantification parameter between the actual viscosity and the expected viscosity.

[0067] In some embodiments, the first difference quantification parameter between the color depth and the expected color depth is the difference △PRGB between the RGB value of the paint color obtained by paint mixing and the RGB value of the expected color; similarly, the second difference quantification parameter between the actual viscosity and the expected viscosity is the difference △α between the actual viscosity of the paint obtained by paint mixing and the expected viscosity.

[0068] Of course, each specific gravity relationship corresponds to an expected color shade and expected viscosity, and correspondingly, also corresponds to an actual color shade and actual viscosity.

[0069] S105 performs multiple trial productions, and predicts a target weight relationship based on the first difference quantization parameter mean value and the second difference quantization parameter mean value obtained through the multiple trial productions and a weight prediction model obtained through pre-training.

[0070] In some embodiments, after each trial production, the trial production results are sent to the customer to confirm whether they meet expectations, and then trial production is conducted again based on the new proportion relationship fed back by the customer. When the number of trial productions reaches a threshold (for example, 5 times), the proportion prediction model is used for prediction.

[0071] In some embodiments, the step of training to obtain the weight matching model specifically includes the steps of: Based on the difference quantification parameter mean (including the first difference quantification parameter mean and the second difference quantification parameter mean) between the historical trial production results of multiple trial productions of each workpiece to be processed and the corresponding historical expected results stored in the database, and the historical target weight relationship finally used for painting in the production stage (which is the historical weight relationship used in a certain trial production, usually the historical weight relationship at the time of the last trial production), a pre-built machine learning model is input for training, so as to construct a mapping relationship between the difference quantification parameter mean and the target weight relationship.

[0072] In this embodiment, the model is trained by constructing the mean of the difference quantization parameters of multiple trial productions, rather than directly training the model based on the trial production results of the last trial production. This is because even under the premise of the same weight relationship, the results of multiple trial productions may be different. Therefore, if only the results of a single trial production are used for training and prediction, it is bound to cause a large error. In other words, multiple trial productions are actually used to eliminate the deviation introduced by a single trial production, and then prediction is performed.

[0073] Of course, in other embodiments, front-line staff can also manually review, for example, manually adjust the recommended weight relationship, and then send it to the customer for confirmation, and enter it into the database as the target weight relationship of the workpiece to be processed. When the customer confirms to adopt the recommended weight relationship, the recommended weight relationship is then used for allocation.

[0074] Compared with adding high-precision feeding equipment, it can be achieved by simply embedding the corresponding functional modules in the control system, which is easier to promote and implement.

[0075] Embodiment 4: Figure 3 As shown, the present invention also provides an intelligent paint mixing system, comprising: A formula acquisition module, used to acquire the formula information of the target paint, wherein the formula information includes three materials, namely, a first material, a second material and a third material, and a specific gravity relationship of the three materials; A target weight calculation module, used to calculate the target weights of the three materials according to the target weight of the target paint and the specific gravity relationship of the three materials; The material injection module is used to inject material into the dispensing barrel. When injecting the first material, a first material weight threshold is set. When the actual weight of the first material injected into the dispensing barrel reaches the first material weight threshold, the first material restriction interval is entered; the first material restriction interval is divided into several levels, and each level of the first material restriction interval corresponds to a first material unloading speed; several first material unloading speeds decrease from large to small; when the actual weight of the first material reaches the first material target weight, the unloading of the first material is completed; When injecting the second material, a second material weight threshold is set, and when the actual weight of the second material injected into the dispensing barrel reaches the second material weight threshold, the second material restriction interval is entered; the second material restriction interval is divided into several levels, and each level of the second material restriction interval corresponds to a second material unloading speed; several second material unloading speeds decrease from large to small; when the actual weight of the second material reaches the second material target weight, the unloading of the second material is completed; When injecting the third material, a third material weight threshold is set. When the actual weight of the third material injected into the dispensing barrel reaches the third material weight threshold, the third material restriction interval is entered; the third material restriction interval is divided into several levels, and each level of the third material restriction interval corresponds to a third material unloading speed; several third material unloading speeds decrease from large to small; when the actual weight of the third material reaches the third material target weight, the unloading of the third material is completed.

[0076] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0077] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a computer terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0078] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. An intelligent paint mixing method, characterized in that include: Acquire the formula information of the target paint according to the input basic information of the part to be processed, wherein the formula information includes three materials, namely, a first material, a second material and a third material, and the specific gravity relationship of the three materials; Calculating the target weights of the three materials according to the target weight of the first material entered by the user and the specific gravity relationship of the three materials; Three materials are sequentially injected into the dispensing barrel. When the first material is injected, a weight threshold of the first material is set. When the actual weight of the first material injected into the dispensing barrel reaches the weight threshold of the first material, the first material restriction interval is entered. The first material restriction interval is divided into several levels, and each level of the first material restriction interval corresponds to a first material unloading speed. Several first material unloading speeds decrease from large to small. When the actual weight of the first material reaches the first material target weight, the unloading of the first material is completed. When injecting the second material, a second material weight threshold is set, and when the actual weight of the second material injected into the dispensing barrel reaches the second material weight threshold, the second material restriction interval is entered; the second material restriction interval is divided into several levels, and each level of the second material restriction interval corresponds to a second material unloading speed; several second material unloading speeds decrease from large to small; when the actual weight of the second material reaches the second material target weight, the unloading of the second material is completed; When injecting the third material, a third material weight threshold is set. When the actual weight of the third material injected into the dispensing barrel reaches the third material weight threshold, the third material restriction interval is entered; the third material restriction interval is divided into several levels, and each level of the third material restriction interval corresponds to a third material unloading speed; several third material unloading speeds decrease from large to small; when the actual weight of the third material reaches the third material target weight, the unloading of the third material is completed.

2. An intelligent paint mixing method according to claim 1, characterized in that: The first material weight threshold is A percentage of the first material target weight, the second material weight threshold is B percentage of the second material target weight, the third material weight threshold is C percentage of the third material target weight, and A>B>C; The number of levels in the first material restriction interval is less than the number of levels in the second material restriction interval and less than the number of levels in the third material restriction interval.

3. An intelligent paint mixing method according to claim 2, characterized in that: The material unloading speed of the last stage of the third material restriction interval is lower than the material unloading speed of the last stage of the second material restriction interval and the first material restriction interval.

4. An intelligent paint mixing method according to any one of claims 1 to 3, characterized in that: Determine whether the current mode is trial production; if it is trial production mode, mix the paint according to the target weights of the three materials calculated from the target weights, and obtain trial production results based on the paint mixing; the trial production results include: a first difference quantification parameter between the color depth and the expected color depth, and a second difference quantification parameter between the actual viscosity and the expected viscosity; and input the mean of the first difference quantification parameter and the mean of the second difference quantification parameter obtained from multiple trial productions into a pre-trained weight prediction model for prediction, and obtain a recommended weight relationship recommended as the target weight relationship in the production stage; and when the recommended weight relationship is used as the target weight relationship, update the weight relationship of the formula information to the recommended weight relationship.

5. The intelligent paint mixing method according to claim 3, characterized in that: The weight threshold of the first material is 91% of the target weight of the first material, and 91% to 100% of the target weight of the first material is the first material restriction interval; the first material restriction interval is evenly divided into 3 levels, and the unloading speed of each level of the first material restriction interval is 30% lower than that of the previous level; The weight threshold of the second material is 85% of the target weight of the second material, and 85% to 100% of the target weight of the second material is the second material restriction interval; the second material restriction interval is evenly divided into 5 levels, and the unloading speed of each level of the second material restriction interval is 18% lower than that of the previous level; The weight threshold of the third material is 80% of the target weight of the third material, and 80%~100% of the target weight of the third material is the third material restriction range; the second material restriction range is evenly divided into 10 levels, and the unloading speed of each level of the third material restriction range is reduced by 9.5% compared with the previous level.

6. The intelligent paint mixing method according to claim 4, characterized in that: When the actual weight of the material reaches 100% of the target weight, there is no response to the unloading command.

7. The intelligent paint mixing method according to claim 1, characterized in that: Generate a dynamic progress bar based on the actual weight of the material, including: When the actual weight of the first material injected into the dispensing barrel reaches the first material weight threshold, an early warning is started; the early warning is divided into several early warning levels, and the early warning levels correspond to the levels of the first material restriction interval; and each early warning level adopts a different early warning method; When the actual weight of the second material injected into the dispensing barrel reaches the second material weight threshold, an early warning is started; the early warning is divided into several early warning levels, and the early warning levels correspond to the levels of the second material restriction interval; and each early warning level adopts a different early warning method; When the actual weight of the third material injected into the dispensing barrel reaches the third material weight threshold, an early warning is initiated; the early warning is divided into several early warning levels, and the early warning levels correspond to the levels of the third material restriction interval; and each early warning level adopts a different early warning method.

8. The intelligent paint mixing method according to claim 6, characterized in that: Different warning levels correspond to different progress bar colors, or / and, different warning levels emit different alarm sounds.

9. The intelligent paint mixing method according to claim 1, characterized in that: When the weight of the material accounts for more than 50% of the entire paint, and the error between the actual weight of the material and the target weight is ±2.5%, the actual weight is considered to have reached the target weight; When the weight of the material accounts for 25% to 50% of the entire paint, and the error between the actual weight of the material and the target weight is ±2.0%, the actual weight is considered to have reached the target weight; When the proportion of the material accounts for less than 25% of the entire paint, and the error between the actual weight of the material and the target weight is ±1.5%, the actual weight is considered to have reached the target weight.

10. An intelligent paint mixing system, characterized in that include: A formula acquisition module, used to acquire the formula information of the target paint, wherein the formula information includes three materials, namely, a first material, a second material and a third material, and a specific gravity relationship of the three materials; A target weight calculation module, used to calculate the target weights of the three materials according to the target weight of the target paint and the specific gravity relationship of the three materials; The material injection module is used to inject material into the dispensing barrel. When injecting the first material, a first material weight threshold is set. When the actual weight of the first material injected into the dispensing barrel reaches the first material weight threshold, the first material restriction interval is entered; the first material restriction interval is divided into several levels, and each level of the first material restriction interval corresponds to a first material unloading speed; several first material unloading speeds decrease from large to small; when the actual weight of the first material reaches the first material target weight, the unloading of the first material is completed; When injecting the second material, a second material weight threshold is set, and when the actual weight of the second material injected into the dispensing barrel reaches the second material weight threshold, the second material restriction interval is entered; the second material restriction interval is divided into several levels, and each level of the second material restriction interval corresponds to a second material unloading speed; several second material unloading speeds decrease from large to small; when the actual weight of the second material reaches the second material target weight, the unloading of the second material is completed; When injecting the third material, a third material weight threshold is set. When the actual weight of the third material injected into the dispensing barrel reaches the third material weight threshold, the third material restriction interval is entered; the third material restriction interval is divided into several levels, and each level of the third material restriction interval corresponds to a third material unloading speed; several third material unloading speeds decrease from large to small; when the actual weight of the third material reaches the third material target weight, the unloading of the third material is completed.

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