A production efficiency optimization method in LCD intelligent production system

Abstract

The present invention relates to the field of LCD production, and in particular to a production efficiency optimization method in an LCD intelligent production system. The present invention measures surface point cloud data of an LCD screen to be polished, calculates a stress influence characterization coefficient, and divides the stress influence category of the LCD screen. Subsequently, a control method for LCD screen production is selected according to the stress influence category of the LCD screen, especially for LCD screens of a strong stress influence category. The feedback force exerted on a polishing mechanism is collected, and a polishing stability parameter is calculated according to the fluctuation of the feedback force combined with the bending curvature of a polishing section, and it is determined whether relevant process parameters need to be adjusted. The polishing pressure and the polishing speed are adaptively adjusted according to the polishing stability parameter, thereby reducing the influence of the shape characteristics of the curved screen on the polishing process, reducing damage during the polishing process, improving the polishing quality, improving the yield rate, and improving the production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of LCD production control, and in particular to a production efficiency optimization method in an LCD intelligent production system. Background Art

[0002] LCD screen, or liquid crystal display, is a mainstream flat-panel display technology, widely used in televisions, computer monitors, mobile phones, tablets and other smart devices. During the production process of LCD screens, the edges of LCD screens usually need to be polished to improve the aesthetics and prevent sharp edges from affecting assembly and transportation.

[0003] Chinese patent publication number: CN113997431A, discloses a process for processing LCD special-shaped glass corners, which includes the following steps: pretreatment of glass plate; wearing of wear-resistant sleeve: passing the corners of the glass plate to be cut through the wear-resistant sleeve; cutting of glass plate corners: placing the glass plate with the wear-resistant sleeve on the glass cutting machine, and the glass cutting machine cuts the excess corners of the glass plate passing through the wear-resistant sleeve; semi-finished product grinding: fitting the cut edge of the semi-finished glass plate with the wear-resistant sleeve to the grinding disc; forming special-shaped glass: when the wear-resistant sleeve fits the grinding disc, removing the glass plate with the wear-resistant sleeve, and separating the wear-resistant sleeve from the glass plate. This application reduces the risk of different grinding amounts of each batch of special-shaped glass due to each operator's experience, and has the effect of improving the production yield of each batch of special-shaped glass.

[0004] However, there are still the following problems in the prior art:

[0005] In the prior art, when polishing a curved screen or bent screen, the influence of the morphological characteristics of the screen on the polishing process is not considered, which easily causes damage to the screen, a low yield rate, and affects production efficiency. Summary of the invention

[0006] To this end, the present invention provides a method for optimizing production efficiency in an LCD intelligent production system, so as to overcome the problem in the prior art that when polishing a curved screen or a bent screen, the influence of the morphological characteristics of the screen on the polishing process is not considered, which easily causes damage to the screen, has a low yield rate, and affects production efficiency.

[0007] To achieve the above objectives, on the one hand, the present invention provides a method for optimizing production efficiency in an LCD intelligent production system, which comprises:

[0008] Step S1, measuring surface point cloud data of the LCD screen to be polished to construct a three-dimensional model of the LCD screen;

[0009] Step S2, determining stress influence parameters for the LCD screen based on the three-dimensional model, and calculating stress influence characterization coefficients of the LCD screen based on the stress influence parameters to classify the stress influence category of the LCD screen, wherein the stress influence parameters include the bending curvature of the edge of the three-dimensional model and the size of the stress derivative direction;

[0010] Step S3, selecting a control method for the production of the LCD screen according to the stress impact category of the LCD screen, including:

[0011] Collecting feedback force received by the grinding mechanism, calculating grinding stability parameters based on fluctuations of the feedback force and the curvature of the current grinding section to determine whether the grinding pressure and the grinding speed of the grinding mechanism need to be adjusted, and adjusting the grinding pressure and the grinding speed to corresponding values ​​based on the grinding stability parameters;

[0012] Alternatively, the grinding speed and grinding pressure are determined based on the material hardness of the LCD screen, and the grinding speed and grinding pressure are maintained constant.

[0013] Furthermore, in step S2, the process of determining the stress influencing parameters of the LCD screen by the three-dimensional model includes:

[0014] Marking the edge profile to be polished in the three-dimensional model, and determining the bending curvature of the edge profile;

[0015] The direction in which the edge contour is derived toward the inside of the three-dimensional model is determined as the stress derivation direction, and the distance between the edge contour and another edge contour in the stress derivation direction is determined, and the distance is determined as the size of the stress derivation direction.

[0016] Furthermore, in step S2, the stress influence parameter is calculated according to formula (1):

[0017]

[0018] In formula (1), K represents the stress influencing parameter, L represents the bending curvature, L0 represents the preset bending curvature threshold, D represents the size, D0 represents the preset size threshold, α represents the bending curvature weight coefficient, and β represents the size weight coefficient.

[0019] Furthermore, in step S2, the process of classifying the stress impact category of the LCD screen includes:

[0020] Comparing the stress influencing parameter with a preset stress influencing parameter threshold;

[0021] If the stress impact parameter is greater than or equal to a preset stress impact parameter threshold, it is determined that the LCD screen belongs to a strong stress impact category;

[0022] If the stress impact parameter is less than a preset stress impact parameter threshold, it is determined that the LCD screen belongs to a weak stress impact category.

[0023] Furthermore, in step S3, the control method for LCD screen production is selected to include:

[0024] If the LCD screen belongs to the category of strong stress influence, it is determined that the feedback force received by the grinding mechanism needs to be collected, and the grinding stability parameter is calculated based on the fluctuation of the feedback force combined with the bending curvature of the characteristic grinding section to determine whether the grinding pressure and the grinding speed of the grinding mechanism need to be adjusted, and the grinding pressure and the grinding speed are adjusted to corresponding values ​​based on the grinding stability parameter;

[0025] If the LCD screen belongs to the weak stress impact category, it is determined that the grinding speed and grinding pressure need to be adjusted based on the material characteristics of the LCD screen, and the fixed grinding speed and grinding pressure are maintained.

[0026] Furthermore, in step S3, the grinding stability parameter is calculated according to formula (2) based on the fluctuation of the feedback force and the curvature of the characteristic grinding section.

[0027]

[0028] In formula (2), E represents the grinding stability parameter, t represents the predetermined monitoring time, Fi represents the feedback force at the i-th moment, F0 represents the average feedback force, Le represents the bending curvature of the current grinding section, L0 represents the preset bending curvature threshold, and g represents the offset coefficient, 0.85<g<0.95.

[0029] Furthermore, in step S3, determining whether the grinding pressure and the grinding speed of the grinding mechanism need to be adjusted includes:

[0030] If the grinding stability parameter is greater than a preset grinding stability parameter comparison threshold, it is determined that the grinding pressure and the grinding speed of the grinding mechanism need to be adjusted.

[0031] Further, in step S3, adjusting the grinding pressure and the grinding speed based on the grinding stability parameter includes:

[0032] The grinding pressure and the grinding speed are reduced, and the reduction amount of the grinding pressure and the reduction amount of the grinding speed are both positively correlated with the grinding stability parameter.

[0033] Furthermore, the grinding speed and grinding pressure are adjusted based on the material hardness of the LCD screen, wherein:

[0034] The determined grinding speed and grinding pressure are negatively correlated with the hardness of the material.

[0035] Another aspect provides an LCD intelligent production system, which includes:

[0036] A grinding mechanism, comprising a mechanical arm and a grinding head disposed on the mechanical arm, so that the mechanical arm controls a grinding path of the grinding head;

[0037] A detection module, comprising a scanning unit arranged on the robot arm for collecting detection target point cloud data and a force monitoring unit arranged on the grinding head for monitoring the force applied to the grinding head;

[0038] A host computer, which is connected to the detection module and the grinding mechanism respectively, to control the grinding mechanism

[0039] action.

[0040] Compared with the prior art, the present invention measures the surface point cloud data of the LCD screen to be polished, calculates the stress influence characterization coefficient, and divides the stress influence category of the LCD screen. Subsequently, a control method for LCD screen production is selected according to the stress influence category of the LCD screen, especially for LCD screens of strong stress influence category. The feedback force exerted on the polishing mechanism is collected, and the polishing stability parameter is calculated according to the fluctuation of the feedback force combined with the bending curvature of the polishing section, and it is determined whether the relevant process parameters need to be adjusted. The polishing pressure and the polishing speed are adaptively adjusted according to the polishing stability parameters, thereby reducing the influence of the shape characteristics of the curved screen on the polishing process, reducing damage during the polishing process, improving the polishing quality, improving the yield rate, and improving production efficiency.

[0041] In particular, the present invention considers collecting stress influencing parameters of the LCD screen, including the bending curvature of the edge of the three-dimensional model and the size of the stress derivative direction. In actual situations, when the edge of the curved screen is polished, the stress is transmitted to the inside of the curved screen. The size of the curved screen affects the curved screen's ability to withstand major stresses. Due to the bending characteristics of the curved screen, the force along the edge of the curved screen is constantly changing due to the influence of the morphological characteristics when polishing, which also affects the polishing process. Therefore, the present invention considers calculating the stress influence characterization coefficient through the above-mentioned stress influence parameters, dividing the stress influence categories, and providing data support for the subsequent selection of the control method for LCD screen production, thereby reducing the influence of the shape characteristics of the curved screen on the polishing process, reducing damage during the polishing process, improving the polishing quality, improving the yield rate, and improving production efficiency.

[0042] In particular, considering selecting control methods for screen production for LCD screens of different stress influence categories, for LCD screens of strong stress influence categories, due to the influence of morphological characteristics, abnormalities are prone to occur under the influence of multiple factors during the polishing process. Therefore, the polishing stability parameters are calculated based on the feedback force exerted on the polishing mechanism and the bending curvature of the current polishing section to characterize the polishing stability under the influence of strong stress, and adaptively reduce the polishing pressure and polishing speed, thereby reducing the influence of the shape characteristics of the curved screen on the polishing process, reducing damage during the polishing process, improving the polishing quality, improving the yield rate, and improving production efficiency.

[0043] In particular, for LCD screens with weak stress influence, the polishing process is relatively stable. The main consideration is the impact of material hardness on the polishing process. The polishing parameters are adjusted adaptively to improve the polishing quality, increase the yield rate, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic diagram of the steps of a method for optimizing production efficiency in an intelligent production system according to an embodiment of the invention;

[0045] Figure 2 A logic block diagram for classifying stress impact categories of an LCD screen according to an embodiment of the invention;

[0046] Figure 3 A logic block diagram of a control method for producing the LCD screen selected in an embodiment of the invention;

[0047] Figure 4 This is a logic block diagram for determining whether the grinding mechanism needs to be adjusted according to an embodiment of the invention. DETAILED DESCRIPTION

[0048] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0049] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0050] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the term "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 those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] See also Figures 1 to 4 As shown, Figure 1 This is a schematic diagram of the steps of the method for optimizing production efficiency in an intelligent production system according to an embodiment of the invention. Figure 2 A logic block diagram for classifying stress impact categories of an LCD screen according to an embodiment of the invention is shown. Figure 3 The following is a logic block diagram of a control method for producing the LCD screen selected in an embodiment of the invention. Figure 4 The logic block diagram of the embodiment of the invention is to determine whether the grinding mechanism needs to be adjusted. The production efficiency optimization method in the LCD intelligent production system of the invention includes:

[0052] Step S1, measuring surface point cloud data of the LCD screen to be polished to construct a three-dimensional model of the LCD screen;

[0053] Step S2, determining stress influence parameters for the LCD screen based on the three-dimensional model, and calculating stress influence characterization coefficients of the LCD screen based on the stress influence parameters to classify the stress influence category of the LCD screen, wherein the stress influence parameters include the bending curvature of the edge of the three-dimensional model and the size of the stress derivative direction;

[0054] Step S3, selecting a control method for the production of the LCD screen according to the stress impact category of the LCD screen, including:

[0055] Collecting feedback force received by the grinding mechanism, calculating grinding stability parameters based on fluctuations of the feedback force and the curvature of the current grinding section to determine whether the grinding pressure and the grinding speed of the grinding mechanism need to be adjusted, and adjusting the grinding pressure and the grinding speed to corresponding values ​​based on the grinding stability parameters;

[0056] Alternatively, the grinding speed and grinding pressure are determined based on the material hardness of the LCD screen, and the grinding speed and grinding pressure are maintained constant.

[0057] Specifically, the present invention does not limit the specific method of obtaining the surface point cloud data of the LCD screen. For example, a scanning unit can be used to scan the LCD screen to obtain the surface point cloud data of the LCD screen. There is no specific limitation on the method of constructing a three-dimensional model based on the point cloud data. Professional three-dimensional modeling software can be used for construction. This is a prior art and will not be elaborated on.

[0058] Specifically, the feedback force on the grinding mechanism is the force on the grinding head, which will not be described in detail.

[0059] Specifically, the grinding pressure refers to the pressure of the grinding head on the LCD screen to be ground, which will not be described in detail.

[0060] Specifically, the grinding speed is the moving speed of the grinding head of the grinding mechanism when it moves along a predetermined grinding route, which can be controlled by a host computer and will not be described in detail here.

[0061] Specifically, in step S2, the process of determining the stress influencing parameters for the LCD screen using the three-dimensional model includes:

[0062] Marking the edge profile to be polished in the three-dimensional model, and determining the bending curvature of the edge profile;

[0063] The direction in which the edge contour is derived toward the inside of the three-dimensional model is determined as the stress derivation direction, and the distance between the edge contour and another edge contour in the stress derivation direction is determined, and the distance is determined as the size of the stress derivation direction.

[0064] Specifically, in step S2, the stress influence parameter is calculated according to formula (1):

[0065]

[0066] In formula (1), K represents the stress influencing parameter, L represents the bending curvature, L0 represents the preset bending curvature threshold, D represents the size, D0 represents the preset size threshold, α represents the bending curvature weight coefficient, and β represents the size weight coefficient.

[0067] Specifically, the bending curvature threshold was selected in the interval [800r, 1100r], and the size threshold was selected in the interval [25cm, 35cm];

[0068] The value of α is 0.65 and the value of β is 0.35.

[0069] The present invention considers collecting stress influencing parameters of the LCD screen, including the bending curvature of the edge of the three-dimensional model and the size of the stress derivative direction. In actual situations, when the edge of the curved screen is polished, the stress is transmitted to the inside of the curved screen. The size of the curved screen affects the ability of the curved screen to withstand the main stress. Due to the bending characteristics of the curved screen, the force along the edge of the curved screen is constantly affected by the morphological characteristics when polishing, which also affects the polishing process. Therefore, the present invention considers calculating the stress influence characterization coefficient through the above-mentioned stress influence parameters, dividing the stress influence categories, and providing data support for the subsequent selection of the control method for LCD screen production, thereby reducing the influence of the shape characteristics of the curved screen on the polishing process, reducing damage during the polishing process, improving the polishing quality, improving the yield rate, and improving production efficiency.

[0070] Specifically, in step S2, the process of classifying the stress impact category of the LCD screen includes:

[0071] Comparing the stress influencing parameter with a preset stress influencing parameter threshold;

[0072] If the stress impact parameter is greater than or equal to a preset stress impact parameter threshold, it is determined that the LCD screen belongs to a strong stress impact category;

[0073] If the stress impact parameter is less than a preset stress impact parameter threshold, it is determined that the LCD screen belongs to a weak stress impact category.

[0074] Specifically, the stress influence parameter threshold is selected in the interval [1.15, 1.3].

[0075] Specifically, in step S3, the control method for LCD screen production is selected to include:

[0076] If the LCD screen belongs to the category of strong stress influence, it is determined that the feedback force received by the grinding mechanism needs to be collected, and the grinding stability parameter is calculated based on the fluctuation of the feedback force combined with the bending curvature of the characteristic grinding section to determine whether the grinding pressure and the grinding speed of the grinding mechanism need to be adjusted, and the grinding pressure and the grinding speed are adjusted to corresponding values ​​based on the grinding stability parameter;

[0077] If the LCD screen belongs to the weak stress impact category, it is determined that the grinding speed and grinding pressure need to be adjusted based on the material characteristics of the LCD screen, and the fixed grinding speed and grinding pressure are maintained.

[0078] Specifically, in step S3, the grinding stability parameter is calculated according to formula (2) based on the fluctuation of the feedback force and the curvature of the characteristic grinding section.

[0079]

[0080] In formula (2), E represents the grinding stability parameter, t represents the predetermined monitoring time, Fi represents the feedback force at the i-th moment, F0 represents the average feedback force, Le represents the bending curvature of the current grinding section, L0 represents the preset bending curvature threshold, and g represents the offset coefficient, 0.85<g<0.95.

[0081] To ensure timely response, the monitoring duration is selected in the interval [1s, 2s].

[0082] Specifically, in step S3, determining whether the grinding pressure and the grinding speed of the grinding mechanism need to be adjusted includes:

[0083] If the grinding stability parameter is greater than a preset grinding stability parameter comparison threshold, it is determined that the grinding pressure and the grinding speed of the grinding mechanism need to be adjusted.

[0084] Specifically, the grinding stability parameter comparison threshold is selected in the interval [1.3, 1.6].

[0085] Specifically, in step S3, adjusting the grinding pressure and the grinding speed based on the grinding stability parameter includes:

[0086] The grinding pressure and the grinding speed are reduced, and the reduction amount of the grinding pressure and the reduction amount of the grinding speed are both positively correlated with the grinding stability parameter.

[0087] In this embodiment, optionally,

[0088] If E>1.8, the grinding pressure reduction is determined to be the first pressure reduction F1, and F1=0.3F0 is set; the grinding speed reduction is determined to be the first speed reduction V1, and V1=0.4V0 is set;

[0089] If 1.6<E≤1.8, the grinding pressure reduction is determined to be the second pressure reduction F2, and F2=0.15F0 is set; the grinding speed reduction is determined to be the second speed reduction V2, and V1=0.2V0 is set;

[0090] F0 represents the original grinding pressure, and V0 represents the original grinding speed.

[0091] Considering the selection of control methods for screen production for LCD screens with different stress influence categories, for LCD screens with strong stress influence categories, due to the influence of morphological characteristics, abnormalities are prone to occur under the influence of multiple factors during the polishing process. Therefore, the polishing stability parameters are calculated based on the feedback force exerted on the polishing mechanism and the bending curvature of the current polishing section to characterize the polishing stability under the influence of strong stress, and adaptively reduce the polishing pressure and polishing speed, thereby reducing the influence of the shape characteristics of the curved screen on the polishing process, reducing damage during the polishing process, improving the polishing quality, improving the yield rate, and improving production efficiency.

[0092] Specifically, the grinding speed and grinding pressure are adjusted based on the material hardness of the LCD screen.

[0093] The determined grinding speed and grinding pressure are negatively correlated with the hardness of the material.

[0094] In this embodiment, optionally,

[0095] The hardness of a material is measured on the Mohs hardness scale.

[0096] If the material hardness is less than 5.5, the first grinding speed Ve1 is selected, and Ve1=Ve0×1.3 is set; then the first grinding pressure Fe1 is selected, and Fe1=Fe0×1.25 is set;

[0097] If the material hardness is greater than or equal to 5.5, the second grinding speed Ve2 is selected, and Ve2=0.8Ve0 is set; the second grinding pressure Fe2 is selected, and Fe2=0.8Fe0 is set;

[0098] Wherein, Ve0 represents the reference grinding speed, 0.5 cm / s<Ve0<1.5 cm / s, and Fe0 represents the reference grinding pressure, 25N<Fe0<50N.

[0099] Specifically, an LCD intelligent production system is also provided, which includes:

[0100] A grinding mechanism, comprising a mechanical arm and a grinding head disposed on the mechanical arm, so that the mechanical arm controls a grinding path of the grinding head;

[0101] A detection module, comprising a scanning unit arranged on the robot arm for collecting detection target point cloud data and a force monitoring unit arranged on the grinding head for monitoring the force applied to the grinding head;

[0102] A host computer is connected to the detection module and the polishing mechanism respectively, and is used to control the action of the polishing mechanism.

[0103] Specifically, the present invention does not limit the specific structure of the robot arm. It only needs to meet the degree of freedom under the corresponding working conditions, drive the grinding head to move along a predetermined grinding path, and adjust the contact force between the grinding head and the LCD screen. This will not be repeated.

[0104] Specifically, the specific structure of the scanning unit is not limited, and it only needs to be able to obtain point cloud data. For example, it can be a laser scanning device. This is a prior art and will not be described in detail.

[0105] Specifically, the present invention does not limit the specific structure of the grinding head. For example, it can be a rotary grinding head. Of course, it can also be other forms. This is the prior art and will not be described in detail.

[0106] Specifically, the force monitoring unit can be a force sensor. There is no limitation on the location of the force sensor as long as it can realize the corresponding function. For example, the grinding head can be fixed to the end of the robotic arm by a clamp, and a force sensor can be set at the contact position between the grinding head and the clamp to monitor the force applied to the grinding head. This will not be elaborated here.

[0107] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A method for optimizing production efficiency in an LCD intelligent production system, characterized in that: include: Step S1, measuring surface point cloud data of the LCD screen to be polished to construct a three-dimensional model of the LCD screen; Step S2, determining stress influence parameters for the LCD screen based on the three-dimensional model, and calculating stress influence characterization coefficients of the LCD screen based on the stress influence parameters to classify the stress influence category of the LCD screen, wherein the stress influence parameters include the bending curvature of the edge of the three-dimensional model and the size of the stress derivative direction; Step S3, selecting a control method for the production of the LCD screen according to the stress impact category of the LCD screen, including: Collecting feedback force received by the grinding mechanism, calculating grinding stability parameters based on fluctuations of the feedback force and the curvature of the current grinding section to determine whether the grinding pressure and the grinding speed of the grinding mechanism need to be adjusted, and adjusting the grinding pressure and the grinding speed to corresponding values ​​based on the grinding stability parameters; Or, determine the grinding speed and grinding pressure based on the material hardness of the LCD screen, and maintain a fixed grinding speed and grinding pressure; In step S2, the process of determining the stress influencing parameters for the LCD screen using the three-dimensional model includes: Marking the edge profile to be polished in the three-dimensional model, and determining the bending curvature of the edge profile; Determine the direction in which the edge contour is derived from the inner side of the three-dimensional model as the stress derivation direction, determine the distance between the edge contour and another edge contour in the stress derivation direction, and determine the distance as the size of the stress derivation direction; In step S2, the stress influencing parameter is calculated according to formula (1): In formula (1), K represents the stress influencing parameter, L represents the bending curvature, L0 represents the preset bending curvature threshold, D represents the size, D0 represents the preset size threshold, α represents the bending curvature weight coefficient, and β represents the size weight coefficient; In step S2, the process of classifying the stress impact categories of the LCD screen includes: Comparing the stress influencing parameter with a preset stress influencing parameter threshold; If the stress impact parameter is greater than or equal to a preset stress impact parameter threshold, it is determined that the LCD screen belongs to a strong stress impact category; If the stress impact parameter is less than a preset stress impact parameter threshold, it is determined that the LCD screen belongs to a weak stress impact category.

2. The method for optimizing production efficiency in an LCD intelligent production system according to claim 1, characterized in that: In step S3, the control method for LCD screen production is selected including: If the LCD screen belongs to the category of strong stress influence, it is determined that the feedback force received by the grinding mechanism needs to be collected, and the grinding stability parameter is calculated based on the fluctuation of the feedback force combined with the bending curvature of the characteristic grinding section to determine whether the grinding pressure and the grinding speed of the grinding mechanism need to be adjusted, and the grinding pressure and the grinding speed are adjusted to corresponding values ​​based on the grinding stability parameter; If the LCD screen belongs to the weak stress impact category, it is determined that the grinding speed and grinding pressure need to be adjusted based on the material characteristics of the LCD screen, and the fixed grinding speed and grinding pressure are maintained.

3. The method for optimizing production efficiency in an LCD intelligent production system according to claim 1, characterized in that: In step S3, the grinding stability parameter is calculated according to formula (2) based on the fluctuation of the feedback force and the curvature of the characteristic grinding section. In formula (2), E represents the grinding stability parameter, t represents the predetermined monitoring time, Fi represents the feedback force at the i-th moment, F0 represents the average feedback force, Le represents the bending curvature of the current grinding section, L0 represents the preset bending curvature threshold, and g represents the offset coefficient, 0.85<g<0.

95.

4. The method for optimizing production efficiency in an LCD intelligent production system according to claim 1, characterized in that: In step S3, determining whether the grinding pressure and the grinding speed of the grinding mechanism need to be adjusted includes: If the grinding stability parameter is greater than a preset grinding stability parameter comparison threshold, it is determined that the grinding pressure and the grinding speed of the grinding mechanism need to be adjusted.

5. The method for optimizing production efficiency in an LCD intelligent production system according to claim 1, characterized in that: In the step S3, adjusting the grinding pressure and the grinding speed based on the grinding stability parameter includes: The grinding pressure and the grinding speed are reduced, and the reduction amount of the grinding pressure and the reduction amount of the grinding speed are both positively correlated with the grinding stability parameter.

6. The method for optimizing production efficiency in an LCD intelligent production system according to claim 1, characterized in that: Adjust the grinding speed and grinding pressure based on the material hardness of the LCD screen. The determined grinding speed and grinding pressure are negatively correlated with the hardness of the material.

7. An LCD intelligent production system applied to the method according to any one of claims 1 to 6, characterized in that: include, A grinding mechanism, comprising a mechanical arm and a grinding head disposed on the mechanical arm, so that the mechanical arm controls a grinding path of the grinding head; A detection module, comprising a scanning unit arranged on the robot arm for collecting detection target point cloud data and a force monitoring unit arranged on the grinding head for monitoring the force applied to the grinding head; A host computer is connected to the detection module and the polishing mechanism respectively, and is used to control the action of the polishing mechanism.

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