Intelligent hot and cold pressing hemming control device and method for automobile interior

Abstract

The present invention discloses an intelligent hot and cold pressing and hemming control device and method for automobile interior, which relates to the technical field of pressing and hemming of automobile interior parts. The method comprises: obtaining a target automobile interior part, collecting basic design parameters of the target automobile interior part; obtaining a pre-pasted interior part; determining a first pressing parameter of the target automobile interior part; a servo press adjusts the hot and cold pressing mode according to the first pressing instruction, and controls the pressing device to perform pressing processing; uses a feedback mechanism to make real-time adjustments to obtain a standard pressed interior part; sets preset hemming parameters based on an hemming path planning unit and an hemming force control unit, and performs hemming processing on the standard pressed interior part. The method solves the technical problem that the existing pressing and hemming control of automobile interior parts relies on simple mechanical devices, which makes it difficult to accurately control the pressing and hemming parameters, resulting in poor product stability and consistency, and achieves the technical effect of improving the accuracy, stability and efficiency of pressing and hemming control.

Description

Technical Field

[0001] The present application relates to the technical field related to pressing and hemming of automobile interior decoration parts, and in particular to an intelligent hot and cold pressing and hemming control device and method for automobile interior decoration. Background Art

[0002] With the rapid development of today's automobile manufacturing industry, the quality and comfort of automobile interiors have become one of the important considerations for consumers to choose car models. With the continuous advancement of intelligent and automated technologies, the production process of automobile interiors has also ushered in revolutionary changes. Among them, intelligent hot and cold pressing and edge wrapping control technology, as a key technology to improve the quality of interior parts, enhance assembly accuracy and aesthetics, is gradually becoming a research hotspot and application frontier in the industry. However, in the manufacturing process of traditional automobile interior parts, pressing and edge wrapping often rely on manual operation or simple mechanical devices, which is not only inefficient, but also difficult to ensure the consistency and stability of the product. Especially when dealing with interior parts of different materials, thicknesses and hardnesses, traditional methods often find it difficult to accurately control the pressing temperature, pressure and time, resulting in deformation, debonding or uneven edge wrapping of interior parts, which seriously affects the overall quality of the product.

[0003] Therefore, in the current technology related to pressing and hemming of automotive interior parts, there is a technical problem that it relies on simple mechanical devices, which makes it difficult to accurately control the pressing and hemming parameters, resulting in poor product stability and consistency. Summary of the invention

[0004] The present application provides an intelligent hot and cold pressing and hemming control device and method for automobile interiors, thereby solving the technical problem that the pressing and hemming control of existing automobile interior parts relies on simple mechanical devices, which makes it difficult to accurately control the pressing and hemming parameters, resulting in poor product stability and consistency, and achieves the technical effect of improving the accuracy, stability and efficiency of pressing and hemming control.

[0005] The present application provides an intelligent hot and cold pressing and hemming control device for automobile interior, the device comprising: a target automobile interior part acquisition module, used to acquire the target automobile interior part and collect basic design parameters of the target automobile interior part, wherein the basic design parameters include material hardness, material thickness and material type; a pre-pasted interior part acquisition module, used to pre-pasted the target automobile interior part to obtain the pre-pasted interior part, heat the pre-pasted interior part in a drying tunnel assembly line, and acquire the preheating temperature of the pre-pasted interior part; a first pressing parameter determination module, used to determine the first pressing parameter of the target automobile interior part based on a preset hot and cold pressing rule, in combination with the basic design parameters and the preheating temperature, and generate a first pressing instruction with the first pressing parameter, wherein the first pressing parameter includes the first pressing temperature, ... a pressing pressure and a first pressing time; a hot and cold pressing mode adjustment module, used to input the first pressing instruction into a servo press, the servo press adjusts the hot and cold pressing mode according to the first pressing instruction, and controls the pressing equipment to press the pre-laminated interior parts; a first pressing parameter adjustment module, used to monitor the pressing state of the pre-laminated interior parts through a pressing monitoring unit, generate an adjustment instruction according to the pressing state, and use a feedback mechanism to adjust the first pressing parameter in real time to obtain a standard pressed interior parts; a preset hemming parameter setting module, used to use an automatic hemming robot to set preset hemming parameters based on a hemming path planning unit and a hemming force control unit, including a preset hemming path and a preset hemming force, and perform hemming processing on the standard pressed interior parts based on the preset hemming parameters.

[0006] In a possible implementation, the pre-lamination treatment of the target automobile interior part is performed to obtain the pre-lamination interior part, and the following treatment is performed: the surface of the target automobile interior part is cleaned; an image of the target automobile interior part is collected, edge detection is performed to obtain the contour of the interior part, and the shape of the interior part is determined; based on the shape of the interior part and in combination with the basic design parameters, the pre-lamination treatment of the target interior part is performed to obtain the pre-lamination interior part.

[0007] In a possible implementation, the first pressing parameter of the target automotive interior part is determined by performing the following processing: obtaining historical pressing data records, including sample pressing material data, sample pressing temperature data, sample pressing pressure data, sample pressing time and bonding quality; training a pressing temperature prediction branch and a pressing pressure prediction branch based on the historical pressing data records; inputting the preheating temperature and the material type into the pressing temperature prediction branch to obtain a predicted pressing temperature as the first pressing temperature; inputting the predicted pressing temperature, the material hardness and the material thickness into the pressing pressure prediction branch to obtain a predicted pressing pressure as the second pressing temperature; and calculating the first pressing time based on the first pressing pressure and the first pressing temperature.

[0008] In a possible implementation, the first pressing time is calculated based on the first pressing pressure and the first pressing temperature, and the following processing is further performed: the first pressing time calculation formula is:

[0009]

[0010] Wherein, t is the first pressing time, P is the first pressing pressure, T is the first pressing temperature, k1, k2, k3 are material related constants, a1, b1, a2, b2 are exponential parameters used to adjust the weights of pressure and temperature, μ is the viscosity coefficient of the material, d is the thickness of the material, λ is the thermal conductivity of the material, E is the activation energy of the adhesive, σ is the yield strength of the material, α is the adhesive reaction rate coefficient, ΔH is the curing heat of the adhesive, R is the gas constant, and e is the base of the natural logarithm.

[0011] In a possible implementation, the servo press adjusts the hot and cold pressing mode according to the first pressing instruction, controls the pressing device to press the pre-pasted interior parts, and also performs the following processing: compares the first pressing temperature and the preheating temperature to determine the hot and cold pressing mode; if the first pressing temperature does not exceed the preheating temperature, presses in the cold pressing mode, wherein the cold pressing mode means not starting heating and pressing the pre-pasted interior parts with the first pressing pressure; if the first pressing temperature exceeds the preheating temperature, presses in the hot pressing mode, wherein the hot pressing mode means heating the pre-pasted interior parts to the first pressing temperature and pressing them with the first pressing pressure.

[0012] In a possible implementation, the preset hemming parameters are set based on the hemming path planning unit and the hemming force control unit, including a preset hemming path and a preset hemming force, and the following processing is also performed: the hemming path planning unit performs path planning according to the contour of the interior decoration part; generates motion trajectory instructions according to the path planning results, wherein the motion trajectory instructions include a preset hemming path and automatic hemming robot movement control instructions; the hemming force control unit sets a first hemming force according to the material hardness and the material thickness.

[0013] In a possible implementation, the intelligent hot and cold pressing and hemming control device for automobile interior also performs the following processing: the pressing equipment includes the servo press, the control box and the pressing mold table, and the pressing mold table includes an upper mold body and a lower mold body; wherein the lower mold body is clamped with the upper mold body through a locking mechanism to press the pre-pasted interior parts; the upper mold body is raised and lowered by a servo motor driving the gear movement through a reducer.

[0014] The present application also provides an intelligent hot and cold pressing and hemming control method for automobile interior, comprising: obtaining a target automobile interior part, collecting basic design parameters of the target automobile interior part, wherein the basic design parameters include material hardness, material thickness and material type; performing pre-lamination processing on the target automobile interior part to obtain a pre-lamination interior part, heating the pre-lamination interior part in a drying tunnel assembly line, and obtaining a preheating temperature of the pre-lamination interior part; based on a preset hot and cold pressing rule, combining the basic design parameters and the preheating temperature, determining a first pressing parameter of the target automobile interior part, and generating a first pressing instruction with the first pressing parameter, wherein the first pressing parameter includes a first pressing temperature, ... Laminating pressure and a first laminating time; inputting the first laminating instruction into a servo press, the servo press adjusts the hot and cold laminating mode according to the first laminating instruction, and controls the laminating equipment to perform laminating processing on the pre-laminated interior parts; monitoring the laminating state of the pre-laminated interior parts through a laminating monitoring unit, generating an adjustment instruction according to the laminating state, and adjusting the first laminating parameter in real time by using a feedback mechanism to obtain a standard laminating interior part; using an automatic hemming robot, setting preset hemming parameters based on an hemming path planning unit and an hemming force control unit, including a preset hemming path and a preset hemming force, and performing hemming processing on the standard laminating interior parts based on the preset hemming parameters.

[0015] Through the intelligent hot and cold pressing and hemming control device and method for automobile interior proposed in this application, the target automobile interior parts are obtained, the basic design parameters of the target automobile interior parts are collected; the pre-laminated interior parts are obtained; the first pressing parameters of the target automobile interior parts are determined; the servo press adjusts the hot and cold pressing mode according to the first pressing instruction, and controls the pressing equipment to perform pressing processing; the feedback mechanism is used for real-time adjustment to obtain standard pressed interior parts; the preset hemming parameters are set based on the hemming path planning unit and the hemming force control unit, and the standard pressed interior parts are coated. The technical problem that the existing pressing and hemming control of automobile interior parts relies on simple mechanical devices, which makes it difficult to accurately control the pressing and hemming parameters, resulting in poor product stability and consistency is solved, and the technical effect of improving the accuracy, stability and efficiency of pressing and hemming control is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the present disclosure, the accompanying drawings of the embodiment of the present disclosure will be briefly introduced below. A flow chart is used in the present application to illustrate the operations performed by the system according to the embodiment of the present application. It should be understood that the preceding or following operations are not necessarily performed accurately in order. On the contrary, various steps can be processed in reverse order or simultaneously as needed. At the same time, other operations can also be added to these processes, or one or more operations can be removed from these processes.

[0017] Figure 1A schematic diagram of the structure of an intelligent hot and cold pressing and hemming control device for automobile interior provided in an embodiment of the present application;

[0018] Figure 2 A schematic flow chart of an intelligent hot and cold pressing and hemming control method for automobile interiors provided in an embodiment of the present application.

[0019] Explanation of the reference numerals: target automobile interior parts acquisition module 10, pre-laminated interior parts acquisition module 20, first pressing parameter determination module 30, hot and cold pressing mode adjustment module 40, first pressing parameter adjustment module 50, preset hemming parameter setting module 60. DETAILED DESCRIPTION

[0020] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0021] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0022] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict, and the terms "first\second" involved are merely to distinguish similar objects and do not represent a specific ordering of objects. The terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, device, product, or server that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or modules that are not clearly listed or inherent to these processes, methods, products, or devices. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of this application. The terms used herein are for the purpose of describing the embodiments of the present application only.

[0023] The present application embodiment provides an intelligent hot and cold pressing edge control method for automobile interior, such as Figure 1 As shown, the method includes:

[0024] The target automobile interior part acquisition module 10 is used to acquire the target automobile interior part and collect basic design parameters of the target automobile interior part, wherein the basic design parameters include material hardness, material thickness and material type.

[0025] Preferably, the target automotive interior parts (seats, steering wheels, dashboards, door inner panels, ceilings, floor mats, armrest boxes, etc.) are obtained and their basic design parameters are collected, including material hardness, material thickness and material type. Material hardness is a physical quantity that measures the material's ability to resist local pressure deformation. For automotive interior parts, hardness directly affects its touch, durability and wear resistance. Common interior materials such as plastics (such as modified polypropylene, PVC, etc.), leather (natural leather or artificial leather) and thermoplastic elastomers (such as TPE) have different hardness ranges, which are usually determined by specific test methods (such as Shore durometer test); material thickness refers to the actual thickness of the material used for the interior parts. It directly affects the strength, rigidity and weight of interior parts. Interior parts of different parts and functions have different requirements for material thickness. For example, the dashboard panel may require thicker materials to ensure its structural strength and stability, while the door interior panel may use thinner but elastic materials to improve comfort and touch. Material type refers to the specific type of material used in interior parts. Commonly used material types for automotive interior parts include plastics (such as modified polypropylene, PVC, ABS, etc.), leather (natural leather or artificial leather), textiles (such as woven fabrics, knitted fabrics, non-woven fabrics, etc.), foam materials (such as polyurethane foam, ethylene-vinyl acetate copolymer foam, etc.) and thermoplastic elastomers (such as TPE), etc.;

[0026] The pre-lamination interior parts obtaining module 20 is used to perform pre-lamination processing on target automobile interior parts to obtain pre-lamination interior parts, heat the pre-lamination interior parts in a drying tunnel assembly line, and obtain the preheating temperature of the pre-lamination interior parts.

[0027] Preferably, the target automobile interior parts are pre-laminating treated, and the pre-laminating interior parts are heated in the drying tunnel assembly line to obtain the preheating temperature. Specifically, the pre-laminating treatment refers to pre-attaching certain materials or components on the interior parts, such as decorative sheets, velvet, leather, etc., so as to facilitate subsequent pressing or edge binding treatment. The pre-laminating treatment needs to ensure that the attached materials are tightly fitted to the surface of the interior parts without defects such as bubbles and wrinkles; the interior parts after the pre-laminating treatment will be sent to the drying tunnel assembly line for heating. The drying tunnel assembly line is a device specially used for heating workpieces, usually including components such as heating devices, conveyor chain plates, and temperature control systems. In the drying tunnel assembly line, the pre-laminating interior parts will be evenly heated to a certain temperature, namely the preheating temperature; the preheating temperature is the drying temperature. The preheating temperature is a key parameter reached during the heating process of the assembly line, which has an important influence on the subsequent pressing or edge wrapping. Specifically, the role of the preheating temperature is mainly reflected in improving the plasticity of the material. Heating can soften the interior decoration parts and the materials attached to them, improve their plasticity, and thus facilitate the subsequent pressing or edge wrapping; promote glue curing. If glue or other adhesives are used in the pre-lamination process, appropriate preheating temperature can promote the curing of the glue and enhance the firmness of the attached materials; reduce stress concentration. Preheating can release the stress inside the interior decoration parts and reduce deformation or cracking caused by stress concentration in subsequent processing. The determination of the preheating temperature needs to be determined according to the material, thickness, and type of pre-lamination material of the interior decoration parts.

[0028] In a possible implementation, the pre-laminating treatment of the target automobile interior part to obtain the pre-laminating interior part also includes cleaning the surface of the target automobile interior part; collecting an image of the target automobile interior part, performing edge detection to obtain the contour of the interior part, and determining the shape of the interior part; based on the shape of the interior part and in combination with the basic design parameters, performing the pre-laminating treatment of the target interior part to obtain the pre-laminating interior part.

[0029] Preferably, cleaning is an important step before interior processing and pre-lamination, which aims to remove dust, stains and other impurities on the surface of the interior parts and provide a clean and clear surface for subsequent image acquisition and processing. For example, select the corresponding special cleaning agent according to the material of the interior parts (such as plastic, leather, fabric, etc.), use a vacuum cleaner or a soft brush to remove floating dust and particles on the surface of the interior parts, and after cleaning, let the interior parts dry naturally, and avoid using hot air or drying equipment to prevent the interior parts from being deformed or damaged by heat; use a high-resolution camera or image acquisition device to shoot the interior parts to ensure that the image is clear and without distortion, and import the acquired image into professional image processing software for preprocessing, such as denoising and contrast enhancement. etc., use edge detection algorithms (such as Sobel operator, Canny edge detector, etc.) to perform edge detection on the preprocessed image and extract the contour of the interior decoration parts; according to the contour of the interior decoration parts obtained by edge detection, combined with basic design parameters (such as size, shape tolerance, material properties, etc.), accurately analyze the shape of the interior decoration parts, and select suitable pre-lamination materials (such as protective film, decorative film, sound insulation material, etc.) according to the shape of the interior decoration parts and pre-lamination requirements, ensure that the size, shape and material of the pre-lamination materials match the interior decoration parts, use professional pre-lamination equipment or manual tools to accurately fit the pre-lamination materials on the surface of the interior decoration parts, and during the lamination process, it is necessary to control the force and speed to ensure that the pre-lamination materials are flat and free of bubbles and wrinkles.

[0030] The first pressing parameter determination module 30 is used to determine the first pressing parameter of the target automobile interior part based on the preset cold and hot pressing rules, combined with the basic design parameters and the preheating temperature, and generate a first pressing instruction with the first pressing parameter, wherein the first pressing parameter includes a first pressing temperature, a first pressing pressure and a first pressing time.

[0031] Preferably, in the intelligent hot and cold pressing and hemming control method, based on the preset hot and cold pressing rules, combined with the basic design parameters of the target automotive interior parts (such as material hardness, material thickness and material type) and the preheating temperature, the first pressing parameters are determined and the first pressing instructions are generated. Specifically, the preset hot and cold pressing rules specify the optimal pressing conditions for different materials, thicknesses and preheating temperatures, taking into account factors such as the physical properties of the material, the behavior after heating, and the heat transfer and stress distribution during the pressing process, so as to ensure that the pressed interior parts have good appearance, dimensional stability and mechanical properties; the preset hot and cold pressing rules are combined with the basic design parameters of the target automotive interior parts (such as material hardness, material thickness and material type) and the preheating temperature. The basic design parameters provide the basic properties of the interior parts, while the preheating temperature reflects the state of the interior parts after heating. By comprehensively analyzing these Information can be used to calculate the pressing conditions suitable for the current interior parts, namely the first pressing parameters, including the first pressing temperature, the first pressing pressure and the first pressing time, wherein the first pressing temperature refers to the temperature that needs to be reached and maintained during the pressing process, which shall not exceed the melting temperature or the thermal deformation temperature of the material, so as to ensure that the material has sufficient fluidity and plasticity during the pressing process; the first pressing pressure refers to the pressure applied during the pressing process, which shall be large enough to overcome the friction between the materials and make the materials fit tightly, but excessive pressure shall be avoided to cause deformation or damage to the materials; the first pressing time refers to the time maintained at the specified temperature and pressure, which shall be long enough to allow the material to fully solidify and achieve the required bonding strength, but too long a time shall be avoided to cause overheating or low production efficiency; finally, based on the determined first pressing parameters, a first pressing instruction is generated and input into a servo press or other pressing equipment.

[0032] In one possible implementation, determining the first pressing parameter of the target automotive interior part also includes obtaining historical pressing data records, including sample pressing material data, sample pressing temperature data, sample pressing pressure data, sample pressing time and bonding quality; training a pressing temperature prediction branch and a pressing pressure prediction branch based on the historical pressing data records; inputting the preheating temperature and the material type into the pressing temperature prediction branch to obtain a predicted pressing temperature as the first pressing temperature; inputting the predicted pressing temperature, the material hardness and the material thickness into the pressing pressure prediction branch to obtain a predicted pressing pressure as the first pressing pressure; and calculating the first pressing time based on the first pressing pressure and the first pressing temperature.

[0033] Preferably, sample pressing material data, sample pressing temperature data, sample pressing pressure data, sample pressing time and bonding quality are extracted from the historical pressing data records, the sample pressing material data records the information of pressing materials of different batches or types, the sample pressing temperature data refers to the temperature value actually used in the pressing process, the sample pressing pressure data refers to the pressure value actually applied in the pressing process, the sample pressing time refers to the time required to complete the pressing, and the bonding quality refers to the bonding quality assessment of the interior parts after pressing, which may be obtained through some quality standards or tests; features related to the pressing temperature are screened out from the historical pressing data records, such as material type, material thickness, environmental conditions (such as temperature, humidity), etc., to ensure that each record has a corresponding actual pressing temperature as a label (or target variable), and a pressing temperature prediction model is constructed based on a machine learning algorithm (such as linear regression, decision tree, random forest, gradient boosting tree, neural network, etc.), and the sample pressing temperature prediction model is used. This data is used to train the pressing temperature prediction model. During the training process, the model will learn the mapping relationship between the features and the pressing temperature to obtain the pressing temperature prediction branch. Similarly, the pressing pressure prediction branch is trained. In the pressing pressure prediction branch, in addition to basic information such as material type and material thickness, the predicted pressing temperature needs to be considered as an input feature; the preheating temperature (which may refer to the initial temperature or pretreatment temperature of the material before pressing) and the material type are input into the pressing temperature prediction branch, and the model will output a predicted pressing temperature, which is used as the first pressing temperature; the predicted pressing temperature (first pressing temperature), the hardness and thickness of the material are input into the pressing pressure prediction branch, and the model predicts the required pressing pressure based on these input features, and this pressure is used as the first pressing pressure; finally, based on the first pressing pressure and the first pressing temperature, the time required to complete the pressing, i.e., the first pressing time, is calculated to guide the actual pressing operation.

[0034] In a possible implementation, based on the first pressing pressure and the first pressing temperature, calculating the first pressing time further includes: a first pressing time calculation formula is:

[0035]

[0036] Wherein, t is the first pressing time, P is the first pressing pressure, T is the first pressing temperature, k1, k2, k3 are material related constants, a1, b1, a2, b2 are exponential parameters used to adjust the weights of pressure and temperature, μ is the viscosity coefficient of the material, d is the thickness of the material, λ is the thermal conductivity of the material, E is the activation energy of the adhesive, σ is the yield strength of the material, α is the adhesive reaction rate coefficient, ΔH is the curing heat of the adhesive, R is the gas constant, and e is the base of the natural logarithm.

[0037] The hot and cold pressing mode adjustment module 40 is used to input the first pressing instruction into the servo press, and the servo press adjusts the hot and cold pressing mode according to the first pressing instruction to control the pressing equipment to press the pre-laminated interior parts.

[0038] Preferably, the first pressing instruction is input into the servo press, and the servo press adjusts the hot and cold pressing mode according to the instruction, and controls the pressing equipment to press the pre-pasted interior parts. Specifically, the servo press, also known as a servo press, a servo press, a servo press, etc., is a high-precision pressing equipment driven by a servo motor, which can convert circular motion into linear motion through a high-precision ball screw to achieve precise pressing of workpieces. The servo press has a closed-loop control system, which can monitor and adjust parameters such as pressure and displacement during the pressing process in real time to ensure the pressing quality; after the first pressing parameters (including the first pressing temperature, the first pressing pressure and the first pressing time) are determined, they are integrated into the first pressing instruction, which is input into the control system of the servo press through a human-computer interaction interface (such as a touch screen). After receiving the first pressing instruction, the servo press will adjust its working mode according to the parameters in the instruction. For the hot and cold pressing process, the servo press needs to be able to operate in both heating and cooling states. When working in this state, the internal heating system and cooling system, as well as the pressure system and time system can be adjusted to match the hot and cold pressing requirements in the first pressing instruction; after adjusting the hot and cold pressing mode, the servo press will control the pressing equipment (such as the pressing head, mold, etc.) to press the pre-laminated interior parts, including if the first pressing instruction requires hot pressing, the servo press will start the heating system to increase the temperature of the pressing area to the preset first pressing temperature. When the temperature reaches the set value, the servo press will start the pressure system to control the pressing head to apply pressure to the pre-laminated interior parts at a certain speed. At the same time, it will also control the duration of the pressing process according to the first pressing time in the first pressing instruction. During the pressing process, the servo press may monitor parameters such as pressure and displacement in real time through high-precision sensors to ensure the pressing quality. When the pressing time reaches the set value, the servo press will stop applying pressure and control the pressing head to return to the initial position. At this time, the pre-laminated interior parts have completed the pressing process.

[0039] In a possible implementation, the servo press adjusts the hot and cold pressing mode according to the first pressing instruction, and controls the pressing device to press the pre-pasted interior parts, and further includes comparing the first pressing temperature and the preheating temperature to determine the hot and cold pressing mode; if the first pressing temperature does not exceed the preheating temperature, pressing is performed in a cold pressing mode, wherein the cold pressing mode means not starting heating and pressing the pre-pasted interior parts with the first pressing pressure; if the first pressing temperature exceeds the preheating temperature, pressing is performed in a hot pressing mode, wherein the hot pressing mode means heating the pre-pasted interior parts to the first pressing temperature and pressing is performed with the first pressing pressure.

[0040] Preferably, the appropriate pressing mode (cold pressing or hot pressing) is judged and selected based on the first pressing temperature and the preheating temperature to ensure that the most appropriate temperature and pressure conditions can be used when pressing the automotive interior parts to achieve the best bonding effect and pressing quality. Specifically, the first pressing temperature and the preheating temperature are compared to determine the cold and hot pressing mode. If the first pressing temperature does not exceed the preheating temperature, it means that under the current preheating conditions, the required pressing temperature can be reached or approached without additional heating. Therefore, the cold pressing mode is selected for pressing. In the cold pressing mode, the heating device is not started, and the pre-lamination interior parts are directly pressed with the predicted first pressing pressure. If the first pressing temperature exceeds the preheating temperature, it means that the temperature of the interior parts needs to be further increased to reach the required pressing temperature. Therefore, the hot pressing mode is selected for pressing. In the hot pressing mode, the heating device needs to be started to heat the temperature of the pre-lamination interior parts to the first pressing temperature, and then press them with the predicted first pressing pressure. In the cold pressing mode, turn off the heating device, place the pre-laminated interior parts in the pressing device, and directly apply the first pressing pressure for pressing; in the hot pressing mode, start the heating device, heat the pre-laminated interior parts to the first pressing temperature, and after reaching the required temperature, place the interior parts in the pressing device, and apply the first pressing pressure for pressing.

[0041] The first pressing parameter adjustment module 50 is used to monitor the pressing state of the pre-laminated interior parts through a pressing monitoring unit, generate adjustment instructions according to the pressing state, and use a feedback mechanism to adjust the first pressing parameters in real time to obtain standard pressed interior parts.

[0042] Preferably, the pressing state of the pre-laminated interior parts is monitored by a pressing monitoring unit, and an adjustment instruction is generated according to the state, and the first pressing parameter is adjusted in real time by using a feedback mechanism to obtain a standard pressed interior part. Specifically, the pressing monitoring unit is an important component of the intelligent pressing system, which integrates a variety of sensors and monitoring equipment and can monitor in real time various state parameters of the pre-laminated interior parts during the pressing process, such as temperature, pressure, displacement, time, etc. These parameters reflect the real-time state of the pressing process; according to the state parameters monitored by the pressing monitoring unit, the intelligent control system will perform data analysis and comparison, and if there is a deviation between the monitored state parameters and the first pressing parameters, the intelligent control system will adjust the first pressing parameters according to the preset algorithm and rules. Then, adjustment instructions are automatically generated to correct deviations and return the pressing process to the preset standard state; after the adjustment instructions are generated, they are transmitted to the servo press or other pressing equipment in real time through the feedback mechanism. After receiving the adjustment instructions, the servo press will immediately adjust its working state, such as adjusting the heating power, changing the pressure, adjusting the pressing time, etc., to achieve real-time adjustment of the pressing process. This feedback mechanism ensures the dynamic stability and accuracy of the pressing process; the pressing process after real-time adjustment can ensure that the pre-laminated interior parts reach the preset standard state during the pressing process. When the pressing process is completed, the interior parts that have passed the inspection can be used as standard pressed interior parts, which improves production quality and efficiency.

[0043] The preset hemming parameter setting module 60 is used to use an automatic hemming robot to set preset hemming parameters, including a preset hemming path and a preset hemming force, based on a hemming path planning unit and a hemming force control unit, and to perform hemming processing on the standard pressed interior parts based on the preset hemming parameters.

[0044] Preferably, an automatic hemming robot is used to hem standard pressed interior parts based on precise control of preset hemming parameters (including preset hemming path and preset hemming force). The hemming path planning unit and the hemming force control unit are intended to ensure the hemming quality, appearance consistency and production efficiency of the interior parts. Specifically, the hemming path planning unit calculates and plans the optimal hemming path according to the shape, size and hemming requirements of the interior parts. This path needs to ensure that the hemming material can fit closely to the edge of the interior parts while avoiding defects such as wrinkles, overlaps or omissions. The hemming force control unit is responsible for setting and controlling the force applied by the hemming robot during the hemming process. This force needs to be determined based on the characteristics of the hemming material (such as hardness, elasticity, etc.), the material and structure of the interior parts, and the required hemming effect. The preset hemming force should ensure that the hemming material can It can fit firmly on the interior decoration parts while avoiding deformation of the interior decoration parts or damage of the edging materials due to excessive force; the automatic edging robot moves precisely along the preset path according to the preset edging parameters and under the guidance of the edging path planning unit. During the movement, the edging robot adjusts the force it applies through the edging force control unit to ensure that the edging material can fit evenly and tightly on the edge of the interior decoration parts. It is usually equipped with sensors and feedback systems, which can monitor the state parameters (such as force, position, speed, etc.) during the edging process in real time, and make real-time adjustments as needed. After the coating process of the automatic edging robot, the edge of the standard pressed interior decoration parts will be accurately wrapped with a layer of edging material, which not only improves the appearance texture of the interior decoration parts, but also enhances its durability and protective performance, ensuring the edging quality, appearance consistency and production efficiency of the interior decoration parts.

[0045] In a possible implementation, the preset hemming parameters are set based on the hemming path planning unit and the hemming force control unit, including a preset hemming path and a preset hemming force, and further include: the hemming path planning unit performs path planning according to the contour of the interior decoration part; generates motion trajectory instructions according to the path planning results, wherein the motion trajectory instructions include a preset hemming path and automatic hemming robot movement control instructions; the hemming force control unit sets a first hemming force according to the material hardness and the material thickness.

[0046] Preferably, the hemming path planning unit is a module responsible for path planning according to the contour of the interior trim part. Its main task is to determine the path that the hemming robot needs to follow during the processing to ensure that the hemming operation can be completed accurately and efficiently. Specifically, it receives the contour data of the interior trim part, performs path planning based on the contour data, combines the requirements of the hemming process and the motion characteristics of the robot, generates hemming path planning results, and provides a basis for subsequent motion trajectory instruction generation. Motion trajectory instruction generation is the process of converting the hemming path planning results into instructions executable by the robot. These instructions include preset hemming paths and movement control instructions of the robot, which are used to guide the robot to move according to a predetermined trajectory during the processing. Specifically, the output of the hemming path planning unit is received. The result, that is, the hemming path planning data, converts the path planning data into motion instructions for the robot, including parameters such as moving speed, acceleration, and direction. At the same time, the corresponding processing parameters are set according to the process requirements, such as hemming force, temperature, etc., to generate motion trajectory instructions, and send them to the automatic hemming robot for execution; the hemming force control unit is a module responsible for setting the hemming force according to parameters such as material hardness and thickness. Specifically, it receives data on material hardness and thickness, calculates and sets a reasonable hemming force according to the material hardness and thickness, combined with the requirements of the hemming process and the performance parameters of the robot, generates a first hemming force instruction, and sends it to the automatic hemming robot for execution. The hemming path planning unit and the hemming force control unit cooperate with each other to ensure the accuracy and efficiency of the hemming operation.

[0047] In a possible implementation, the controlling of the laminating device to perform laminating processing on the pre-pasted interior parts also includes that the laminating device includes the servo press, the control box and the laminating die table, and the laminating die table includes an upper die body and a lower die body; wherein the lower die body is clamped with the upper die body through a locking mechanism to press the pre-pasted interior parts; and the upper die body is raised and lowered by a servo motor driving the gear movement through a reducer.

[0048] Preferably, the laminating equipment is a kind of equipment specially used for laminating workpieces such as pre-laminated interior parts, which integrates servo control technology, automatic control technology, etc. to ensure the accuracy and efficiency of the laminating process. Specifically, the servo press is the core part of the laminating equipment, which is powered by a servo motor to achieve precise control of the laminating process. The servo motor has the advantages of fast response speed and high control accuracy, and can ensure precise adjustment of the laminating force, speed and position; the control box is the intelligent management unit of the laminating equipment, which integrates components such as computers, PLCs (programmable logic controllers), touch screens, etc., and is used for real-time monitoring and automatic control of the entire laminating process, and can be adjusted according to preset programs and Parameters are used to precisely control the servo press, pressing die table and other components to ensure the stability and consistency of the pressing process; the pressing die table is the direct execution component of the pressing operation, including the upper die body and the lower die body, wherein the upper die body is lifted and lowered by the servo motor through the reducer to drive the gear operation, and the lifting height and speed can be precisely controlled to meet the pressing requirements of different workpieces. The precise control of the servo motor ensures the stability and accuracy of the upper die body during the lifting process; the lower die body is clamped with the upper die body through the clamping mechanism to press the pre-laminated interior parts. The design of the clamping mechanism ensures the close fit and stable fixation of the upper die body and the lower die body during the pressing process, thereby ensuring the pressing quality. During the pressing process, the control box sends instructions to the servo motor according to the preset program and parameters. After receiving the instructions, the servo motor drives the gears through the reducer to make the upper mold body perform precise lifting and lowering movements. When the upper mold body and the lower mold body are closed, the pre-laminated interior parts are pressed. During the pressing process, the control box will monitor the pressing force, speed, position and other parameters in real time, and adjust them as needed to ensure the stability and consistency of the pressing quality.

[0049] In the above, refer to Figure 1 The intelligent hot and cold pressing and hemming control device for automobile interior decoration according to an embodiment of the present invention is described in detail. Figure 2 An intelligent hot and cold pressing hemming control method for automobile interior decoration according to an embodiment of the present invention is described.

[0050] The intelligent hot and cold pressing and hemming control method for automobile interior of the embodiment of the present application comprises: obtaining a target automobile interior part, collecting basic design parameters of the target automobile interior part, wherein the basic design parameters include material hardness, material thickness and material type; performing pre-lamination processing on the target automobile interior part to obtain a pre-lamination interior part, heating the pre-lamination interior part in a drying tunnel assembly line, and obtaining a preheating temperature of the pre-lamination interior part; determining a first pressing parameter of the target automobile interior part based on a preset hot and cold pressing rule, combining the basic design parameters and the preheating temperature, and generating a first pressing instruction with the first pressing parameter, wherein the first pressing parameter includes a first pressing temperature, ... Laminating pressure and a first laminating time; inputting the first laminating instruction into a servo press, the servo press adjusts the hot and cold laminating mode according to the first laminating instruction, and controls the laminating equipment to perform laminating processing on the pre-laminated interior parts; monitoring the laminating state of the pre-laminated interior parts through a laminating monitoring unit, generating an adjustment instruction according to the laminating state, and adjusting the first laminating parameter in real time by using a feedback mechanism to obtain a standard laminating interior part; using an automatic hemming robot, setting preset hemming parameters based on an hemming path planning unit and an hemming force control unit, including a preset hemming path and a preset hemming force, and performing hemming processing on the standard laminating interior parts based on the preset hemming parameters.

[0051] Optionally, the intelligent hot and cold pressing and hemming control method for automobile interior also includes cleaning the surface of the target automobile interior part; collecting an image of the target automobile interior part, performing edge detection to obtain the contour of the interior part, and determining the shape of the interior part; based on the shape of the interior part and in combination with the basic design parameters, performing pre-lamination processing of the target interior part to obtain the pre-lamination interior part.

[0052] Optionally, the intelligent hot and cold pressing and hemming control method for automobile interior also includes obtaining historical pressing data records, including sample pressing material data, sample pressing temperature data, sample pressing pressure data, sample pressing time and bonding quality; training a pressing temperature prediction branch and a pressing pressure prediction branch based on the historical pressing data records; inputting the preheating temperature and the material type into the pressing temperature prediction branch to obtain a predicted pressing temperature as a first pressing temperature; inputting the predicted pressing temperature, the material hardness and the material thickness into the pressing pressure prediction branch to obtain a predicted pressing pressure as a second pressing temperature; and calculating the first pressing time based on the first pressing pressure and the first pressing temperature.

[0053] Optionally, the intelligent hot and cold pressing and hemming control method for automobile interior also includes: a first pressing time calculation formula is:

[0054]

[0055] Wherein, t is the first pressing time, P is the first pressing pressure, T is the first pressing temperature, k1, k2, k3 are material related constants, a1, b1, a2, b2 are exponential parameters used to adjust the weights of pressure and temperature, μ is the viscosity coefficient of the material, d is the thickness of the material, λ is the thermal conductivity of the material, E is the activation energy of the adhesive, σ is the yield strength of the material, α is the adhesive reaction rate coefficient, ΔH is the curing heat of the adhesive, R is the gas constant, and e is the base of the natural logarithm.

[0056] Optionally, the intelligent hot and cold pressing and edging control method for automobile interior also includes comparing the first pressing temperature and the preheating temperature to determine the hot and cold pressing mode; if the first pressing temperature does not exceed the preheating temperature, pressing in cold pressing mode, wherein the cold pressing mode means not starting heating and pressing the pre-pasted interior parts with the first pressing pressure; if the first pressing temperature exceeds the preheating temperature, pressing in hot pressing mode, wherein the hot pressing mode means heating the pre-pasted interior parts to the first pressing temperature and pressing them with the first pressing pressure.

[0057] Optionally, the intelligent hot and cold pressing and hemming control method for automobile interior also includes: the hemming path planning unit performs path planning according to the contour of the interior part; generates motion trajectory instructions according to the path planning results, wherein the motion trajectory instructions include a preset hemming path and automatic hemming robot movement control instructions; the hemming force control unit sets a first hemming force according to the material hardness and the material thickness.

[0058] Optionally, the intelligent hot and cold pressing and hemming control method for automobile interior also includes that the pressing equipment includes the servo press, the control box and the pressing mold table, and the pressing mold table includes an upper mold body and a lower mold body; wherein the lower mold body is clamped with the upper mold body through a locking mechanism to press the pre-pasted interior parts; and the upper mold body is raised and lowered by a servo motor driving the gear movement through a reducer.

[0059] The intelligent hot and cold pressing and edge wrapping control method for automobile interior provided by the embodiment of the present invention can be executed by the intelligent hot and cold pressing and edge wrapping control device for automobile interior provided by any embodiment of the present invention. The intelligent hot and cold pressing and edge wrapping control device for automobile interior has functional modules and beneficial effects corresponding to the execution method.

[0060] Although the present application makes various references to certain modules in the system according to the embodiments of the present application, any number of different modules may be used and run on the user terminal and / or server, and the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0061] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. Intelligent hot and cold pressing and hemming control device for automobile interior, characterized in that: The device comprises: A target automobile interior part acquisition module is used to acquire the target automobile interior part and collect basic design parameters of the target automobile interior part, wherein the basic design parameters include material hardness, material thickness and material type; A pre-laminated interior parts obtaining module is used to perform pre-laminated processing on target automobile interior parts to obtain pre-laminated interior parts, heat the pre-laminated interior parts in a drying tunnel assembly line, and obtain the preheating temperature of the pre-laminated interior parts; A first pressing parameter determination module is used to determine a first pressing parameter of a target automotive interior part based on a preset hot and cold pressing rule, in combination with the basic design parameter and the preheating temperature, and to generate a first pressing instruction with the first pressing parameter, wherein the first pressing parameter includes a first pressing temperature, a first pressing pressure and a first pressing time; A hot and cold pressing mode adjustment module, used for inputting the first pressing instruction into a servo press, and the servo press adjusts the hot and cold pressing mode according to the first pressing instruction, and controls the pressing device to press the pre-laminated interior parts; A first pressing parameter adjustment module, configured to monitor the pressing state of the pre-laminated interior component through a pressing monitoring unit, generate an adjustment instruction according to the pressing state, and adjust the first pressing parameter in real time by using a feedback mechanism to obtain a standard pressed interior component; A preset hemming parameter setting module, used to use an automatic hemming manipulator to set preset hemming parameters, including a preset hemming path and a preset hemming force, based on an hemming path planning unit and an hemming force control unit, and to perform a hemming process on the standard pressed interior parts based on the preset hemming parameters; The first pressing parameter determination module performs the following steps: Obtain historical pressing data records, including sample pressing material data, sample pressing temperature data, sample pressing pressure data, sample pressing time and bonding quality; Training a pressing temperature prediction branch and a pressing pressure prediction branch based on the historical pressing data records; Inputting the pressing temperature prediction branch according to the preheating temperature and the material type to obtain a predicted pressing temperature as a first pressing temperature; The predicted pressing temperature, the material hardness and the material thickness are input into a pressing pressure prediction branch to obtain a predicted pressing pressure as a second pressing temperature; calculating the first pressing time based on the first pressing pressure and the first pressing temperature; Wherein, the first pressing time calculation formula is: Wherein, t is the first pressing time, P is the first pressing pressure, T is the first pressing temperature, k1, k2, k3 are material related constants, a1, b1, a2, b2 are exponential parameters used to adjust the weights of pressure and temperature, μ is the viscosity coefficient of the material, d is the thickness of the material, λ is the thermal conductivity of the material, E is the activation energy of the adhesive, σ is the yield strength of the material, α is the adhesive reaction rate coefficient, ΔH is the curing heat of the adhesive, R is the gas constant, and e is the base of the natural logarithm.

2. The intelligent hot and cold pressing and hemming control device for automobile interior decoration according to claim 1, characterized in that: The pre-attached interior trim obtaining module further includes the following steps: Clean the surface of the target automotive interior parts; Collect images of target automotive interior parts, perform edge detection to obtain the contours of the interior parts, and determine the shapes of the interior parts; Based on the shape of the interior trim part and in combination with the basic design parameters, a pre-lamination process of the target interior trim part is performed to obtain the pre-lamination interior trim part.

3. The intelligent hot and cold pressing and hemming control device for automobile interior decoration according to claim 1, characterized in that: The hot and cold pressing mode adjustment module further includes the following steps: Comparing the first pressing temperature with the preheating temperature to determine a hot / cold pressing mode; If the first pressing temperature does not exceed the preheating temperature, a cold pressing mode is used for pressing, wherein the cold pressing mode means that the pre-laminated interior component is pressed by the first pressing pressure without starting heating; If the first pressing temperature exceeds the preheating temperature, pressing is performed in a hot pressing mode, wherein the hot pressing mode refers to heating the temperature of the pre-laminated interior component to the first pressing temperature and performing pressing at the first pressing pressure.

4. The intelligent hot and cold pressing and hemming control device for automobile interior decoration according to claim 2, characterized in that: The preset hemming parameter setting module further includes the following steps: The hemming path planning unit performs path planning according to the contour of the interior trim; Generate motion trajectory instructions according to the path planning results, wherein the motion trajectory instructions include a preset hemming path and an automatic hemming robot movement control instruction; The hemming force control unit sets a first hemming force according to the material hardness and the material thickness.

5. The intelligent hot and cold pressing and hemming control device for automobile interior decoration according to claim 1, characterized in that: The hot and cold pressing mode adjustment module further includes the following steps: The pressing equipment includes the servo press, a control box and a pressing die table, and the pressing die table includes an upper die body and a lower die body; The lower mold body is molded together with the upper mold body through a clamping mechanism to press the pre-laminated interior decoration parts; The upper mold body is lifted and lowered by a servo motor driving the gears through a reducer.

6. Intelligent hot and cold pressing hemming control method for automobile interior, characterized in that: The method is applied to the intelligent hot and cold pressing hemming control device for automobile interior according to any one of claims 1 to 5, and the method comprises: Acquire a target automobile interior part and collect basic design parameters of the target automobile interior part, wherein the basic design parameters include material hardness, material thickness and material type; Performing pre-lamination treatment on target automobile interior parts to obtain pre-lamination interior parts, heating the pre-lamination interior parts in a drying tunnel assembly line to obtain the preheating temperature of the pre-lamination interior parts; Based on the preset hot and cold pressing rules, combined with the basic design parameters and the preheating temperature, determine the first pressing parameters of the target automotive interior parts, and generate a first pressing instruction with the first pressing parameters, wherein the first pressing parameters include a first pressing temperature, a first pressing pressure and a first pressing time; Inputting the first pressing instruction into a servo press, the servo press adjusts the hot and cold pressing mode according to the first pressing instruction, and controls the pressing device to perform a pressing process on the pre-laminated interior component; Monitoring the pressing state of the pre-laminated interior parts by a pressing monitoring unit, generating an adjustment instruction according to the pressing state, and adjusting the first pressing parameter in real time by using a feedback mechanism to obtain a standard pressed interior part; Using an automatic hemming robot, setting preset hemming parameters based on an hemming path planning unit and an hemming force control unit, including a preset hemming path and a preset hemming force, and performing a hemming process on the standard pressed interior parts based on the preset hemming parameters; Wherein, the determining of the first pressing parameter of the target automobile interior trim part comprises: Obtain historical pressing data records, including sample pressing material data, sample pressing temperature data, sample pressing pressure data, sample pressing time and bonding quality; Training a pressing temperature prediction branch and a pressing pressure prediction branch based on the historical pressing data records; Inputting the pressing temperature prediction branch according to the preheating temperature and the material type to obtain a predicted pressing temperature as a first pressing temperature; The predicted pressing temperature, the material hardness and the material thickness are input into a pressing pressure prediction branch to obtain a predicted pressing pressure as a second pressing temperature; calculating the first pressing time based on the first pressing pressure and the first pressing temperature; Wherein, the first pressing time calculation formula is: Wherein, t is the first pressing time, P is the first pressing pressure, T is the first pressing temperature, k1, k2, k3 are material related constants, a1, b1, a2, b2 are exponential parameters used to adjust the weights of pressure and temperature, μ is the viscosity coefficient of the material, d is the thickness of the material, λ is the thermal conductivity of the material, E is the activation energy of the adhesive, σ is the yield strength of the material, α is the adhesive reaction rate coefficient, ΔH is the curing heat of the adhesive, R is the gas constant, and e is the base of the natural logarithm.

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