Automatic manufacturing method, system and terminal of TPO (thermoplastic polyolefin) skin

Abstract

The invention relates to an automatic manufacturing method, system and terminal of TPO skin, and relates to the field of artificial leather, and the method comprises the following steps: filling a hopper with a material according to a preset material ratio; extruding the material to a preset compounding position at a preset extrusion speed; extruding and compounding the material and a preset base cloth characteristic at a preset extruding speed at the compounding position to form a composite cloth; the composite cloth is controlled to penetrate through the space between two preset glue rolling rollers, and the glue rolling rollers are controlled to rotate in the glue rolling groove at the preset glue rolling speed so as to carry the coating and coat the surface of the composite cloth with the coating; controlling a preset infrared heating plate at a preset heating temperature to heat and dry the coated composite cloth, and conveying the coated composite cloth to a preset printing roller position; and controlling a printing roller to roll the composite fabric according to a preset rolling pressure so as to output a printed fabric. The system automatically controls equipment to perform extrusion compounding, coating, heating drying, printing and other procedures, manual operation is not needed, and the quality of finished products is high.

Description

Technical Field

[0001] The invention relates to the field of artificial leather, and in particular to an automatic manufacturing method, system and terminal of TPO skin. Background Art

[0002] TPO skin, or thermoplastic polyolefin skin, is a new type of thermoplastic polyolefin elastomer material, which is a mixture of rubber and polyolefin. It has both the characteristics of rubber materials and the performance of thermoplastic resins. TPO skin is widely used in the field of automotive interiors and can be used to manufacture key components such as car seats, car steering wheels, car door trims and dashboards.

[0003] In the traditional preparation method of TPO skin, the TPO material and the base fabric are usually heat-pressed and laminated by a hot pressing machine to form a skin with a specific texture and thickness. The above-mentioned traditional preparation method of TPO skin is usually a semi-automatic production method, which requires the intervention of operators and the operation of production machinery. The skill level and operating experience of the operators will affect the manufacturing quality of the TPO skin. If the operators are not familiar with the hot pressing process or the operation is not standardized, it may lead to unstable quality or defects in the finished product, which needs to be improved. Summary of the invention

[0004] In order to improve the manufacturing quality of TPO skin, the present invention provides an automatic manufacturing method, system and terminal of TPO skin.

[0005] In a first aspect, the present invention provides an automatic manufacturing method of a TPO skin, which adopts the following technical solution: An automatic manufacturing method of a TPO skin, comprising: Fill the material into the hopper according to the preset material ratio; Extruding the material to a preset compound position at a preset extrusion speed; At a compounding position, the material is extruded and compounded with a preset base fabric feature at a preset extrusion speed to form a composite fabric; Controlling the composite fabric to pass between two preset rubber rolling rollers, controlling the rubber rolling roller to rotate in the rubber rolling groove at a preset rubber rolling speed to carry the coating and apply the coating to the surface of the composite fabric; The preset infrared heating plate is controlled at a preset heating temperature to heat and dry the coated composite fabric and convey it to a preset printing roller position; The printing roller is controlled to roll the composite fabric with a preset roller pressure to output the printed fabric.

[0006] By adopting the above technical solution, the system automatically controls the equipment to carry out processes such as extrusion compounding, coating, heating and drying, and printing. First, an extrusion layer is extruded and compounded on the surface of the base fabric, and then a PU coating is coated on the surface of the extrusion layer, and finally printing is carried out. During the entire process, no operator intervention is required, and the degree of automation is high. In addition, the machinery is produced strictly in accordance with the specified requirements during the production process, and the quality of the finished product is high.

[0007] Optionally, the method of heating and drying the coated composite fabric by using an infrared heating plate includes: Acquire an image of the composite fabric after coating; Determine the width value of the composite fabric and the side contour line of the composite fabric according to the composite fabric image recognition; When the composite fabric width is smaller than the preset infrared heating plate width, the heating area of ​​the infrared heating plate is determined according to the side contour of the composite fabric; Determine the surface reflectivity of the composite fabric when it enters the infrared heating plate according to the composite fabric image recognition; Match the temperature correction amount of the infrared heating plate according to the difference between the preset reference reflectivity and the surface reflectivity of the composite fabric when it leaves the rubber roller; Correct the heating temperature according to the temperature correction amount and output the correction temperature; The infrared heating plate is controlled to generate heat in the heating area according to the corrected temperature to heat and dry the coated composite fabric.

[0008] Optionally, also include: When the composite fabric width is greater than the infrared heating plate width, the quotient of the composite fabric width and the infrared heating plate width is calculated and defined as the width comparison quotient value; Based on the width comparison quotient being not less than 2, determining the number of infrared heating plates for simultaneously heating the composite fabric according to the width comparison quotient; A number of infrared heating plates are activated to heat the composite fabric; Based on the width comparison quotient being less than 2, matching the shaking speed value of the infrared heating plate along the width direction of the composite fabric according to the width comparison quotient; According to the shaking speed value, the infrared heating plate is controlled to shake and heat the composite fabric in the width direction; When the infrared heating plate heats the composite fabric, the infrared heating plate is controlled to move back and forth in a preset infrared heating platform area along the length direction of the composite fabric at a preset lateral moving speed to expand the heating range and generate wind force for drying during the movement.

[0009] Optionally, the control method of the infrared heating plate when moving along the length direction of the composite fabric includes: Controlling the infrared heating plate to rotate at a preset rotation speed to generate rotating wind and establish a wind field area model; Determine the central heating area of ​​the infrared heating plate that is not affected by the rotating wind and the edge heating area that generates the rotating wind according to the wind field area model; Control the central heating area of ​​the infrared heating plate to generate heat according to the corrected temperature; Matching the temperature decay of the edge heating area according to the rotation speed; Re-correct the corrected temperature of the edge heating area according to the temperature attenuation, and output the attenuation temperature; The edge heating area of ​​the infrared heating plate is controlled to generate heat according to the attenuation temperature to assist the rotating wind in drying the composite fabric.

[0010] Optionally, when the printing roller surface is abnormal, the printed fabric texture will be unqualified. The treatment method for the abnormality of the printing roller surface includes: Acquire a fabric surface image of a printed fabric; Determine the depth of the printing pattern according to the fabric surface image and the preset printing pattern characteristics; Analyze and determine whether the printing pattern depth is consistent with the preset reference printing depth; If they are inconsistent, when the printing pattern depth is greater than the reference printing depth, there is foreign matter on the printing roller surface, and the printing roller surface is cleaned using a preset foreign matter cleaning method; When the printing pattern depth is not greater than the reference printing depth, the printing roller surface is worn, and the printing roller surface is repaired using a preset wear repair method.

[0011] Optional foreign body cleaning methods include: Acquiring a roller surface image of a printing roller; Determine the characteristic position of the foreign body based on the roller surface image; Determining a preset tilting direction of the shovel plate according to a preset rotation direction of the printing roller; Determine the contact position between the shovel plate and the surface of the printing roller according to the preset roller pressure entrance position; One end of the shovel plate is controlled to abut against the surface of the printing roller at the abutting position and is tilted at a preset tilt angle in the tilting direction to block the roller pressing entrance position; According to the position of the foreign body feature, a preset blowing device is controlled to blow the foreign body feature with a preset blowing power to remove the foreign body feature and blow it toward the inclined surface of the shovel plate.

[0012] Optionally, grooves for accommodating foreign objects are provided at intervals on the inclined surface of the shovel plate, and the blowing device blows the foreign objects into the grooves from near to far, and the shovel plate and the blowing device are controlled so that the shovel plate can receive more foreign objects. The control method for increasing the amount of foreign objects received includes: Acquire the foreign matter receiving image of the inclined surface of the shovel plate; Determine the foreign matter receiving amount of the foreign matter features in the groove of the shovel plate according to the foreign matter receiving image and the foreign matter features; When the foreign matter receiving amount is greater than the preset reference receiving amount, the blowing power of the blowing device is corrected with the preset blowing correction amount to output the corrected blowing power; Controlling the blowing device to blow air at the foreign body feature with a corrected blowing power so as to blow the foreign body feature toward the groove on the inclined surface of the shovel plate which is farther from the abutment position; Determine the foreign matter distribution rate of the foreign matter features on the inclined surface of the shovel plate according to the foreign matter receiving image and the foreign matter features; When and only when the foreign matter distribution rate reaches 1, the inclination angle of the shovel board is corrected with a preset angle correction amount and the correction angle is output; The shovel plate is controlled to tilt according to the correction angle to increase the tilt angle and receive more foreign matter.

[0013] Optional wear repair methods include: Determine the printing defect position on the surface of the printed fabric after roller pressing according to the fabric surface image; Match the wear position of the printing roller surface according to the printing defect position; Determine the wear amount of the wear position according to the print pattern depth and the reference print depth; According to the wear position, determine other wear positions on the surface of the printing roller that are at the same circumferential position as the wear position and determine the total amount of wear; Matching the preset amount of repair fluid used for repair according to the total amount of wear; The preset repair device sleeve is controlled to be clamped at the circumferential position of the wear position, and the repair liquid is injected from the preset injection port according to the repair usage, and the repair device is removed after the preset solidification time.

[0014] In the second aspect, the present application provides an automatic manufacturing system for TPO skin, which adopts the following technical solution: An automatic manufacturing system for TPO skin, comprising: An acquisition module, used to acquire an image of the composite fabric after coating, an image of the surface of the printed fabric, an image of the surface of the printing roller, and an image of foreign matter received by the inclined surface of the shovel plate; A memory for storing a program of any of the above-mentioned automatic manufacturing methods of TPO skin; The program in the memory can be loaded and executed by the processor to realize an automatic manufacturing method of TPO skin.

[0015] In a third aspect, the present application provides a smart terminal, which adopts the following technical solution: An intelligent terminal comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and execute any one of the above-mentioned automatic manufacturing methods of TPO skin.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: The system automatically controls the equipment to carry out processes such as extrusion lamination, coating, heating and drying, and printing. First, an extrusion layer is extruded and laminated on the surface of the base fabric, and then a PU coating is applied on the surface of the extrusion layer, and finally printing is performed. During the whole process, no operator intervention is required, and the degree of automation is high. In addition, the machine is produced strictly in accordance with the specified requirements during the production process, and the finished product quality is high. By driving the infrared heating plate to move along the length direction of the composite fabric, a larger area of ​​the composite fabric is heated and dried; and in the process of the infrared heating plate moving, the infrared heating plate is controlled to rotate to generate rotating wind, so that the infrared heating plate can not only dry the composite fabric by heating, but also blow dry the composite fabric by wind power; The system determines abnormal conditions on the surface of the printing roller by performing image recognition on the printed fabrics that have been printed. In the case of foreign matter, the system sets a shovel plate on the printing roller and controls the blowing device to blow the foreign matter onto the shovel plate for processing. The inclination angle of the shovel plate can be adjusted according to the amount of foreign matter on it. In the case of wear, the system removes the printing roller and circumferentially sets a repair device on the worn position of the printing roller to repair the worn position through the repair device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a method flow chart of an automatic manufacturing method of a TPO skin according to an embodiment of the present invention; Figure 2 The method flow of the heating and drying method of the embodiment of the present invention is Figure 1 ; Figure 3 The method flow of the heating and drying method of the embodiment of the present invention is Figure 2 ; Figure 4 It is a method flow chart of the infrared heating plate movement control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and 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.

[0019] The embodiment of the present application discloses an automatic manufacturing method of TPO skin. The system controls the equipment to automatically perform extrusion compounding, coating, drying and printing processes to automatically produce TPO skin. In the drying process, the number and temperature of infrared heating plates are controlled according to the condition of the composite fabric to dry more efficiently. In the printing process, the abnormal condition of the printing roller is analyzed and processed according to the surface printing condition of the final printed fabric.

[0020] Reference Figure 1 , an automatic manufacturing method of TPO skin comprises the following steps: Step S100: Filling materials into the hopper according to a preset material ratio.

[0021] The TPO skin is composed of a multi-layer structure, including a PU coating, an extrusion layer and a base fabric, wherein the extrusion layer is formed by mixing and extruding a variety of materials. The material ratio refers to the amount ratio of the various materials used to form the extrusion layer, which is set in advance by the technicians and will not be described here.

[0022] In this embodiment, the equipment has a plurality of hoppers, and a plurality of materials arranged according to a material ratio are poured into the hoppers and mixed by a twin-screw extruder to obtain raw materials for the extrusion layer.

[0023] Step S101: extruding the material to a preset compound position at a preset extrusion speed.

[0024] The extrusion speed is the speed at which the raw material is extruded from the extrusion die of the twin-screw extruder set by the technician, which will not be described in detail here. In this embodiment, there are two extrusion rollers below the extrusion die, and the two extrusion rollers rotate relative to each other. The base fabric passes between the two extrusion rollers, and the composite position refers to the position between the base fabric and one of the extrusion rollers. After the raw material is extruded at the composite position, the two extrusion rollers can squeeze the raw material and the base fabric together.

[0025] Step S102: extruding and compounding the material and the preset base fabric features at a compounding position at a preset extrusion speed to form a composite fabric.

[0026] The extrusion speed refers to the rotation speed of the two extrusion rollers set by the technicians. The extrusion speed is used to control the extrusion rollers to press the material onto the base fabric features. The material is evenly distributed and the material is tightly combined with the base fabric features. I will not go into details here.

[0027] Step S103: Control the composite fabric to pass between two preset rubber rolling rollers, and control the rubber rolling rollers to rotate in the rubber rolling groove at a preset rubber rolling speed to carry the coating and apply the coating to the surface of the composite fabric.

[0028] In the coating process, there are two relatively rotating rubber rollers, one of which has half of its body immersed in a rubber groove filled with coating material. The extruded composite fabric passes between the two rubber rollers, at which point the rubber rollers can roll up the coating material and coat it on the surface of the composite fabric.

[0029] The glue rolling speed is the rotation speed of the glue rolling roller set by the technician. The glue rolling roller is rotated by the glue rolling speed. The glue rolling roller can fully roll up the coating and evenly apply it on the surface of the composite fabric. It will not be elaborated here.

[0030] Step S104: controlling a preset infrared heating plate at a preset heating temperature to heat and dry the coated composite fabric and convey it to a preset printing roller position.

[0031] After the coating is completed, the composite fabric is heated and dried by an infrared heating plate, and then the composite fabric is printed after drying.

[0032] The heating temperature is the initial temperature of the infrared heating plate set by the technicians, which will not be described in detail here. The heating temperature will be adjusted according to the actual conditions of the coating on the surface of the composite fabric and the heating process of the infrared heating plate.

[0033] Step S105: controlling the printing roller to roll the composite fabric with a preset rolling pressure to output the printed fabric.

[0034] The printing rollers are two rollers rotating relative to each other, and the surfaces of the printing rollers are provided with teeth for printing. The dried composite fabric passes between the two printing rollers, and the printing rollers can produce printing on the surface of the composite fabric.

[0035] The roller pressure intensity is the intensity set by the technician when the printing roller rolls the composite fabric, which will not be described in detail here.

[0036] Reference Figure 2 The method for heating and drying the coated composite fabric by an infrared heating plate comprises the following steps: Step S200: Acquire an image of the composite fabric after coating.

[0037] The composite fabric image refers to an image of the composite fabric that has just been coated and has just come out of the coating process, obtained by a camera installed on the production line. Various parameters of the composite fabric can be obtained from the composite fabric image.

[0038] Step S201: determining a width value of the composite fabric and a side contour line of the composite fabric according to composite fabric image recognition.

[0039] The composite fabric width value is the width of the composite fabric after coating, and the composite fabric side contour line refers to the contour lines of the two side edges of the composite fabric, and the distance between the contour lines of the two side edges is the composite fabric width value. The composite fabric width value and the composite fabric side contour line of the composite fabric can be obtained by performing image recognition analysis on the composite fabric from the composite fabric image.

[0040] According to composite fabrics with different composite fabric width values, the system controls the infrared heating plate in a targeted manner.

[0041] Step S202: when the composite fabric width is smaller than the preset infrared heating plate width, the heating area of ​​the infrared heating plate is determined according to the composite fabric side contour line.

[0042] The width of the infrared heating plate is the standard width value of the infrared heating plate designed by technicians and will not be described in detail here.

[0043] When the width of the composite fabric is smaller than the width of the infrared heating plate, the infrared heating plate can completely cover and heat the composite fabric in the width direction of the composite fabric. At this time, there is no need to turn on the entire infrared heating plate. Instead, only a part of the heating area of ​​the infrared heating plate needs to be turned on to heat and dry the composite fabric.

[0044] The heating area range refers to a part of the heating area of ​​the infrared heating plate determined according to the width of the composite fabric. The position between the side contour lines of the composite fabric on both sides is the area of ​​the composite fabric that needs to be heated and dried. When the side contour lines of the composite fabric are determined, the position of the infrared heating plate corresponding to the position area between the side contour lines of the composite fabric on both sides is the heating area range of the infrared heating plate.

[0045] Step S203: determining the surface reflectivity of the composite fabric when it enters the infrared heating plate according to the composite fabric image recognition.

[0046] Surface reflectivity refers to the ability of the composite fabric to reflect light on its surface. The ability of the composite fabric to reflect light on its surface is reflected in the image as the degree of brightness. The surface reflectivity of the composite fabric when it enters the infrared heating plate can be determined by image recognition and analysis of the composite fabric surface from the composite fabric image.

[0047] Step S204: matching the temperature correction amount of the infrared heating plate according to the difference between the preset reference reflectivity and the surface reflectivity of the composite fabric when it leaves the rubber roller.

[0048] The reference reflectivity of the composite fabric when it leaves the rubber roller is a standard value set by the technicians, which is pre-determined by the technicians and will not be described in detail here.

[0049] There is a distance between the composite fabric coming out of the rubber roller and entering the infrared heating plate. During this process, due to changes in factors such as ambient temperature, the coating on the surface of the composite fabric will be dried to a certain extent in advance. At this time, the surface reflectivity of the composite fabric when entering the infrared heating plate may change relative to the reference reflectivity. When the degree of dryness of the coating on the surface of the composite fabric changes, the heating temperature of the composite fabric when the infrared heating plate heats the composite fabric needs to be re-corrected. The temperature correction amount is the correction amount when the infrared heating plate temperature is corrected. The temperature correction amount is proportional to the difference between the reference reflectivity and the surface reflectivity. The greater the difference between the reference reflectivity and the surface reflectivity, the greater the temperature correction amount.

[0050] Step S205: Correct the heating temperature according to the temperature correction amount and output the corrected temperature.

[0051] The correction temperature is the temperature after the heating temperature of the infrared heating plate is corrected. When the temperature correction amount of the infrared heating plate is determined, the correction temperature can be determined according to the heating temperature and the temperature correction amount, and the correction temperature is the difference between the heating temperature and the temperature correction amount.

[0052] Step S206: Controlling the infrared heating plate to generate heat in the heating area according to the corrected temperature to heat and dry the coated composite fabric.

[0053] After the correction temperature is determined, the temperature of the infrared heating plate is adjusted to reduce the temperature of the infrared heating plate to the correction temperature, so that the correction temperature can be adapted to the composite fabric just entering the infrared heating plate.

[0054] Reference Figure 3 When the width of the composite fabric is greater than the width of the infrared heating plate, the method for heating and drying the coated composite fabric by the infrared heating plate includes the following steps: Step S300: When the composite fabric width is greater than the infrared heating plate width, the quotient of the composite fabric width and the infrared heating plate width is calculated and defined as a width comparison quotient value.

[0055] When the width of the composite fabric is greater than the width of the infrared heating plate, one infrared heating plate is not sufficient to directly heat and dry the composite fabric. In this case, the infrared heating plate needs to be processed.

[0056] In this embodiment, by calculating the quotient of the composite fabric width and the infrared heating plate width, the infrared heating plate is processed in a targeted manner according to different width comparison quotient values.

[0057] Step S3011: based on the width comparison quotient being not less than 2, determining the number of infrared heating plates for heating the composite fabric at the same time according to the width comparison quotient.

[0058] If the width comparison quotient is not less than 2, the width of the composite fabric is at least twice the width of the infrared heating plate, which means that at least two infrared heating plates can be arranged in the width direction of the composite fabric to heat and dry the composite fabric at the same time. At this time, the actual number of infrared heating plates that can be arranged can be determined according to the width comparison quotient.

[0059] Step S30111: Start a number of infrared heating plates to heat the composite fabric.

[0060] When the number of infrared heating panels is determined, the number of infrared heating panels is increased according to the number of infrared heating panels.

[0061] Step S3012: based on the width comparison quotient being less than 2, matching the shaking speed value of the infrared heating plate along the width direction of the composite fabric according to the width comparison quotient.

[0062] When the width comparison quotient is less than 2, since the width of the infrared heating plate is a fixed standard value, when two infrared heating plates are placed simultaneously in the width direction of the composite fabric, there will be a part of the infrared heating plate that does not need to be started to generate heat. In order to avoid the above situation, in this embodiment, only one infrared heating plate is provided, and the infrared heating plate is moved left and right so that the infrared heating plate can heat and dry the composite fabric as a whole.

[0063] The shaking speed value is the moving speed of the infrared heating plate when it moves left and right. The shaking speed value is proportional to the width comparison quotient value. The larger the width comparison quotient value, the larger the shaking speed value.

[0064] Step S30121: controlling the infrared heating plate to perform shaking heating in the width direction of the composite fabric according to the shaking speed value.

[0065] After determining the shaking speed value, the infrared heating plate is controlled to move in the width direction of the composite fabric.

[0066] Step S302: When the infrared heating plate heats the composite fabric, the infrared heating plate is controlled to move back and forth in a preset infrared heating platform area along the length direction of the composite fabric at a preset lateral moving speed to expand the heating range and generate wind force for drying during the movement.

[0067] Furthermore, whether increasing the number of infrared heating plates or driving the infrared heating plates to move left and right, only a small distance in the length direction of the composite fabric can be heated and dried, and the drying time is short. Therefore, in this embodiment, the infrared heating plate is driven to move back and forth along the length direction of the composite fabric, and the moving length is the overall length of the infrared heating table area where the infrared heating plate is located. The above method can heat and dry a longer area of ​​composite fabric, and the infrared heating plate can generate wind to assist in drying during the movement. The lateral movement speed is the movement speed of the infrared heating plate to move back and forth along the length direction of the composite fabric for heating, which is set by the technician and will not be described in detail here.

[0068] Reference Figure 4 The control method of the infrared heating plate moving along the length direction of the composite fabric comprises the following steps: Step S400: Controlling the infrared heating plate to rotate at a preset rotation speed to generate rotating wind and establish a wind field area model.

[0069] In this embodiment, the infrared heating plate rotates synchronously while moving along the length direction of the composite fabric. When the infrared heating plate rotates, rotating wind can be generated, so that the infrared heating plate can both dry the composite fabric by heating and blow dry the composite fabric by rotating wind.

[0070] The wind field area model refers to the model of the area where rotating wind is generated at the bottom of the infrared heating plate. The wind field area model is established based on the width of the infrared heating plate. The central cylindrical area of ​​the wind field area model is the windless area, and the outer circumference of the windless area is the windy area.

[0071] Step S401: determining a central heating area of ​​the infrared heating plate that is not affected by the rotating wind and an edge heating area that generates the rotating wind according to the wind field area model.

[0072] The central heating area is the area position on the infrared heating plate corresponding to the windless area of ​​the wind field area model. The edge heating area is the area position on the infrared heating plate corresponding to the windy area of ​​the wind field area model. The central heating area and the edge heating area can be analyzed and determined according to the wind field area model.

[0073] Step S402: Control the central heating area of ​​the infrared heating plate to generate heat according to the corrected temperature.

[0074] In this embodiment, since the edge heating area has both an infrared heating plate for heating and drying and a rotating wind for blowing, the area on the composite fabric corresponding to the edge heating area is cooled and dried faster. In order to ensure that the composite fabric can be cooled evenly, it is necessary to adjust the temperature of the central heating area and the edge heating area of ​​the infrared heating plate differently.

[0075] The central heating area has no rotating wind assistance, so the central heating area of ​​the infrared heating plate is still controlled to heat at the corrected temperature.

[0076] Step S403: matching the temperature attenuation of the edge heating area according to the rotation speed.

[0077] Temperature attenuation refers to the temperature drop of the edge heating area compared to the center heating area. Temperature attenuation is related to the rotation speed of the infrared heating plate. The rotation speed affects the wind force of the rotating wind. The stronger the rotating wind, the lower the temperature required for the edge heating area, and the greater the temperature difference between the center heating area and the edge heating area. Therefore, the temperature attenuation is proportional to the rotation speed.

[0078] Step S404: re-correcting the corrected temperature of the edge heating area according to the temperature attenuation amount, and outputting the attenuation temperature.

[0079] When the temperature attenuation is determined, the attenuation temperature is the difference between the corrected temperature of the central heating area and the temperature attenuation.

[0080] Step S405: controlling the edge heating area of ​​the infrared heating plate to generate heat according to the attenuation temperature to assist the rotating wind in drying the composite fabric.

[0081] The edge heating area generates heat at a decaying temperature, and with the assistance of rotating wind, the composite fabric can be dried evenly.

[0082] When the printing roller surface is abnormal, it will cause the printed fabric texture to be unqualified. The treatment method for the abnormality of the printing roller surface includes the following steps: Step S500: Acquire a fabric surface image of the printed fabric.

[0083] The fabric surface image refers to the surface image of the printed fabric obtained by a camera arranged on the production line when the composite fabric is printed by a printing roller.

[0084] Step S501: Determine the depth of the printed pattern according to the fabric surface image and the preset printed pattern features.

[0085] Printing texture characteristics refer to the normal texture on the surface of printed fabrics. Printing texture depth refers to the depth of the texture on the surface of printed fabrics. The printing texture depth is related to the surface condition of the printing roller and is usually constant. If there is an abnormality on the surface of the printing roller, the printing texture depth may change, so it is necessary to determine the printing texture depth. The printing texture depth is obtained by image recognition analysis of the printing texture characteristics from the fabric surface image.

[0086] Step S502: Analyze and determine whether the printing pattern depth is always consistent with a preset reference printing depth.

[0087] The reference printing depth is the depth of the standard printing pattern on the printed fabric obtained by printing the composite fabric with a printing roller with a complete surface. It is related to the surface condition of the printing roller and is a fixed standard value, which will not be elaborated here.

[0088] By judging whether the depth of the printed lines is consistent with the reference printing depth, it is possible to judge whether there is any abnormality in the printed lines on the printed fabric and whether there is any abnormality on the surface of the printing roller.

[0089] Step S5031: If not consistent, when the printing pattern depth is greater than the reference printing depth, there is foreign matter on the surface of the printing roller, and the surface of the printing roller is cleaned using a preset foreign matter cleaning method.

[0090] If the two are inconsistent, it means that there is indeed an abnormality on the surface of the printing roller. At this time, the depth of the printing lines will appear, corresponding to the two abnormal conditions of the printing roller.

[0091] If the printing line depth is greater than the reference printing depth, it means that there may be foreign matter on the surface of the printing roller, which makes the printing line depth of the printed fabric greater. At this time, the system cleans the foreign matter through a foreign matter cleaning method. The foreign matter cleaning method is not described here and will be introduced in detail in subsequent embodiments.

[0092] Step S5032: When the printing pattern depth is not greater than the reference printing depth, the printing roller surface is worn, and the printing roller surface is repaired using a preset wear repair method.

[0093] If the printing line depth is not greater than the reference printing depth, it means that the surface of the printing roller may be worn after long-term use, causing the printing line depth of the printed fabric to become smaller. For such cases, the system repairs it through a wear repair method. The wear repair method is not described here and will be described in detail in subsequent embodiments.

[0094] The foreign body cleaning method includes the following steps: Step S600: Acquire the roller surface image of the printing roller.

[0095] The roller surface image refers to the surface image of the printing roller obtained by a camera installed on the production line. Foreign body features can appear in the roller surface image and be identified and obtained.

[0096] Step S601: determining the characteristic position of the foreign matter according to the roller surface image.

[0097] The foreign body feature position refers to the position of the foreign body feature in the circumferential annular area on the printing roller. The foreign body feature position can be determined by performing image recognition analysis on the foreign body feature from the roller surface image.

[0098] Step S602: determining a preset tilt setting direction of the shovel plate according to a preset rotation direction of the printing roller.

[0099] In this embodiment, a shovel plate is arranged obliquely above the printing roller, and one end of the shovel plate abuts against the surface of the printing roller to shovel up foreign matter attached to the surface of the printing roller. The foreign matter is blown onto the inclined surface of the shovel plate by the blowing device.

[0100] The inclined setting direction of the shovel plate is determined according to the rotation direction of the printing roller, which is consistent with the rotation direction of the printing roller, so that the shovel plate can shovel the surface of the printing roller in the opposite direction of the printing roller.

[0101] Step S603: determining the contact position between the shovel plate and the surface of the printing roller according to the preset roller pressure entrance position.

[0102] The roller inlet position refers to the position where the composite fabric extends between the two printing rollers and is roller printed, which will not be described in detail here. In order to prevent foreign matter from flying into the roller inlet position under the blowing of the blowing device during roller printing, the contact position between the shovel plate and the surface of the printing roller is close to the roller inlet position. At this time, the shovel plate is tilted to block the roller inlet position.

[0103] Step S604: controlling one end of the shovel plate to abut against the surface of the printing roller at the abutting position and to be tilted in the tilting direction at a preset tilting angle to shield the roller pressure entrance position.

[0104] After the contact position and the tilting direction are determined, the setting position of the shovel plate on the printing roller can be determined. The tilting angle is the initial angle of the shovel plate when tilting on the printing roller set by the technician, which may be adjusted according to the actual situation when the shovel plate is used, and will not be described here.

[0105] Step S605: According to the position of the foreign object feature, the preset blowing device is controlled to blow the foreign object feature with a preset blowing power to remove the foreign object feature and blow it toward the inclined surface of the shovel plate.

[0106] The blowing device blows air toward the fixed point of the annular area where the foreign body feature is located, and the blowing device remains stationary. When the foreign body feature rotates to the fixed point with the printing roller, the foreign body feature can be blown by the blowing device and fall on the inclined surface of the shovel plate. When the foreign body on the inclined surface of the shovel plate accumulates to a certain extent, the shovel plate is cleaned.

[0107] The blowing power is the power of the blowing device set by the technician to blow air to the foreign body characteristics, which will not be elaborated here.

[0108] Grooves for accommodating foreign body features are provided at intervals on the inclined surface of the shovel plate, and the blowing device blows the foreign body features into the grooves from near to far, and the shovel plate and the blowing device are controlled so that the shovel plate can accept more foreign body features. The control method for increasing the foreign body acceptance amount includes the following steps: Step S700: Acquire a foreign matter receiving image of the inclined surface of the shovel plate.

[0109] The foreign object receiving image refers to the image of the inclined surface of the shovel plate obtained by the camera, and the foreign object features will appear in the foreign object receiving image.

[0110] Step S701: determining the foreign object receiving amount of the foreign object features in the groove of the shovel plate according to the foreign object receiving image and the foreign object features.

[0111] The foreign matter reception volume refers to the amount of foreign matter features accumulated in the grooves on the inclined surface of the shovel. By performing image recognition analysis on the foreign matter features from the foreign matter reception image, the situation of the foreign matter features accumulated in the grooves can be determined.

[0112] Step S702: When the foreign matter receiving amount is greater than a preset reference receiving amount, the blowing power of the blowing device is corrected with a preset blowing correction amount to output a corrected blowing power.

[0113] The reference carrying capacity refers to the amount of foreign matter features that the groove on the shovel plate can carry when the shovel plate is at a specific tilt angle. The reference carrying capacity is related to the groove structure of the shovel plate and is not elaborated here.

[0114] If the foreign matter receiving capacity is greater than the reference receiving capacity, it means that the groove on the inclined surface of the shovel plate at the current inclination angle can no longer accommodate more foreign matter features. At this time, it is necessary to increase the blowing power of the blowing device so that the foreign matter features can be blown into the groove on the inclined surface of the shovel plate that is farther away from the abutment position, and then fill each groove in turn.

[0115] The blowing correction amount is the increase in the blowing power of the blowing device set by the technicians, which will not be described in detail here. The corrected blowing power is the sum of the blowing power and the blowing correction amount.

[0116] Step S703: Controlling the blowing device to blow air to the foreign object feature with the corrected blowing power so as to blow the foreign object feature to the groove on the inclined surface of the shovel plate which is farther from the abutting position.

[0117] After the corrected blowing power is determined, the blowing device is controlled to blow the foreign body feature toward the groove in the shovel plate that is farthest from the abutment position.

[0118] Step S704: determining the foreign matter distribution rate of the foreign matter features on the inclined surface of the shovel plate according to the foreign matter receiving image and the foreign matter features.

[0119] The foreign matter distribution rate refers to the coverage of the foreign matter features on the inclined surface of the shovel plate. The foreign matter distribution rate can be determined by image recognition and analysis of the foreign matter features in the foreign matter acceptance drawing.

[0120] Step S705: When and only when the foreign matter distribution rate reaches 1, the inclination angle of the shovel plate is corrected with a preset angle correction amount and the correction angle is output.

[0121] The foreign matter distribution rate does not reach 1, which means that the foreign matter features have not completely covered the inclined surface of the shovel plate, and the grooves on the inclined surface of the shovel plate can still continue to receive the foreign matter features.

[0122] If the foreign matter distribution rate reaches 1, it means that the foreign matter features have completely covered the inclined surface of the shovel board, and there is no groove for the foreign matter features to receive. In response to this situation, the system controls the shovel board to increase the inclination angle. When the inclination of the shovel board increases, the groove can accommodate more foreign matter features.

[0123] The angle correction amount is the change in the angle of the shovel plate set by the technician each time the angle is corrected, which will not be described in detail here. The correction angle is the sum of the tilt angle and the angle correction amount.

[0124] Step S706: Control the shovel plate to tilt according to the correction angle to increase the tilt angle and receive more foreign matter.

[0125] After the shovel plate is adjusted at the correction angle, the correction blowing power of the blowing device is reset to the initial blowing power, so that the foreign body features continue to be received from the groove on the inclined surface of the shovel plate closest to the abutment position.

[0126] The wear repair method comprises the following steps: Step S800: determining the printing defect position on the surface of the printed fabric after roller pressing according to the fabric surface image.

[0127] The print defect position refers to the position where the defect occurs in the print pattern of the printed fabric. The print defect position can be determined by image recognition analysis of the print pattern in the fabric surface image.

[0128] Step S801: matching the wear position of the printing roller surface according to the printing defect position.

[0129] The wear position refers to the position on the printing roller that corresponds to the printing defect position causing the printing defect. When the position of the printing defect position in the printing fabric is determined, the wear position can also be determined, and the printing fabric is equivalent to horizontally unfolding the surface of the printing roller.

[0130] Step S802: Determine the wear amount of the wear position according to the print pattern depth and the reference print depth.

[0131] The amount of wear at the worn location is determined by the difference between the reference print depth and the print line depth.

[0132] Step S803: Determine other wear positions on the surface of the printing roller that are at the same circumferential position as the wear position according to the wear position and determine the total amount of wear.

[0133] In this embodiment, the method for repairing the worn position is to set a repair device on the worn position. The repair device is ring-shaped. When repairing, the circumferential ring-shaped positions of the worn position of the printing roller can be repaired together. Therefore, when the worn position is detected, the circumferential ring-shaped positions are detected simultaneously to determine whether there are other worn positions, and finally determine the total wear amount of all worn positions.

[0134] Step S804: matching the preset repair amount of the repair fluid according to the total amount of wear.

[0135] The repair amount refers to the amount of repair liquid used to repair the worn position. The repair amount is consistent with the volume of the total wear amount. In this embodiment, the repair liquid can be a colloid that will harden after repair, or it can be a molten metal liquid with the same material as the printing roller.

[0136] Step S805: Control the preset repair device to be clamped on the circumferential position of the wear position, and inject the repair liquid from the preset injection port according to the repair usage, and remove the repair device after the preset solidification time.

[0137] After determining the wear position, the system removes the printing roller and sets the repair device in the annular position where the wear position is located. The repair device has a mold cavity corresponding to the printing teeth of the printing roller. The repair liquid is injected into the mold cavity of the repair device through the injection port. When the repair liquid solidifies, the repair device is taken out to complete the repair of the printing roller.

[0138] Based on the same inventive concept, an embodiment of the present invention provides an automatic manufacturing system for TPO skin.

[0139] An automatic manufacturing system for TPO skins includes: An acquisition module, used to acquire an image of the composite fabric after coating, an image of the surface of the printed fabric, an image of the surface of the printing roller, and an image of foreign matter received by the inclined surface of the shovel plate; A memory for storing a program of an automatic manufacturing method of a TPO skin; The program in the memory can be loaded and executed by the processor to realize an automatic manufacturing method of TPO skin.

[0140] Based on the same inventive concept, an embodiment of the present invention provides an intelligent terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executes an automatic manufacturing method of a TPO skin.

[0141] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A method for automatically manufacturing a TPO skin, characterized in that: include: Fill the material into the hopper according to the preset material ratio; Extruding the material to a preset compound position at a preset extrusion speed; At a compounding position, the material is extruded and compounded with a preset base fabric feature at a preset extrusion speed to form a composite fabric; Controlling the composite fabric to pass between two preset rubber rolling rollers, controlling the rubber rolling roller to rotate in the rubber rolling groove at a preset rubber rolling speed to carry the coating and apply the coating to the surface of the composite fabric; The preset infrared heating plate is controlled at a preset heating temperature to heat and dry the coated composite fabric and convey it to a preset printing roller position; The printing roller is controlled to roll the composite fabric with a preset roller pressure to output the printed fabric.

2. The automatic manufacturing method of TPO skin according to claim 1, characterized in that: The method of heating and drying the coated composite fabric by the infrared heating plate includes: Acquire an image of the composite fabric after coating; Determine the width value of the composite fabric and the side contour line of the composite fabric according to the composite fabric image recognition; When the composite fabric width is smaller than the preset infrared heating plate width, the heating area of ​​the infrared heating plate is determined according to the side contour of the composite fabric; Determine the surface reflectivity of the composite fabric when it enters the infrared heating plate according to the composite fabric image recognition; Match the temperature correction amount of the infrared heating plate according to the difference between the preset reference reflectivity and the surface reflectivity of the composite fabric when it leaves the rubber roller; Correct the heating temperature according to the temperature correction amount and output the correction temperature; The infrared heating plate is controlled to generate heat in the heating area according to the corrected temperature to heat and dry the coated composite fabric.

3. The automatic manufacturing method of TPO skin according to claim 2, characterized in that: Also includes: When the composite fabric width is greater than the infrared heating plate width, the quotient of the composite fabric width and the infrared heating plate width is calculated and defined as the width comparison quotient value; Based on the width comparison quotient being not less than 2, determining the number of infrared heating plates for simultaneously heating the composite fabric according to the width comparison quotient; A number of infrared heating plates are activated to heat the composite fabric; Based on the width comparison quotient being less than 2, matching the shaking speed value of the infrared heating plate along the width direction of the composite fabric according to the width comparison quotient; According to the shaking speed value, the infrared heating plate is controlled to shake and heat the composite fabric in the width direction; When the infrared heating plate heats the composite fabric, the infrared heating plate is controlled to move back and forth in a preset infrared heating platform area along the length direction of the composite fabric at a preset lateral moving speed to expand the heating range and generate wind force for drying during the movement.

4. The automatic manufacturing method of TPO skin according to claim 3, characterized in that: The control method of the infrared heating plate when it moves along the length direction of the composite fabric includes: Controlling the infrared heating plate to rotate at a preset rotation speed to generate rotating wind and establish a wind field area model; Determine the central heating area of ​​the infrared heating plate that is not affected by the rotating wind and the edge heating area that generates the rotating wind according to the wind field area model; Control the central heating area of ​​the infrared heating plate to generate heat according to the corrected temperature; Matching the temperature decay of the edge heating area according to the rotation speed; Re-correct the corrected temperature of the edge heating area according to the temperature attenuation, and output the attenuation temperature; The edge heating area of ​​the infrared heating plate is controlled to generate heat according to the attenuation temperature to assist the rotating wind in drying the composite fabric.

5. The automatic manufacturing method of TPO skin according to claim 1, characterized in that: When the printing roller surface is abnormal, it will cause the printed fabric texture to be unqualified. The treatment methods for abnormal printing roller surface include: Acquire a fabric surface image of a printed fabric; Determine the depth of the printed pattern according to the fabric surface image and the preset printed pattern characteristics; Analyze and determine whether the printing pattern depth is consistent with the preset reference printing depth; If they are inconsistent, when the printing pattern depth is greater than the reference printing depth, there is foreign matter on the printing roller surface, and the printing roller surface is cleaned using a preset foreign matter cleaning method; When the printing pattern depth is not greater than the reference printing depth, the printing roller surface is worn, and the printing roller surface is repaired using a preset wear repair method.

6. The automatic manufacturing method of TPO skin according to claim 5, characterized in that: Foreign body cleaning methods include: Acquiring a roller surface image of a printing roller; Determine the characteristic position of the foreign body based on the roller surface image; Determining a preset tilting direction of the shovel plate according to a preset rotation direction of the printing roller; Determine the contact position between the shovel plate and the surface of the printing roller according to the preset roller pressure entrance position; One end of the shovel plate is controlled to abut against the surface of the printing roller at the abutting position and is tilted at a preset tilt angle in the tilting direction to block the roller pressing entrance position; According to the position of the foreign body feature, a preset blowing device is controlled to blow the foreign body feature with a preset blowing power to remove the foreign body feature and blow it toward the inclined surface of the shovel plate.

7. The automatic manufacturing method of TPO skin according to claim 6, characterized in that: Grooves for accommodating foreign objects are provided at intervals on the inclined surface of the shovel plate, and the blowing device blows the foreign objects into the grooves from near to far. The shovel plate and the blowing device are controlled so that the shovel plate can receive more foreign objects. The control method for increasing the amount of foreign objects received includes: Acquire the foreign matter receiving image of the inclined surface of the shovel plate; Determine the foreign matter receiving amount of the foreign matter features in the groove of the shovel plate according to the foreign matter receiving image and the foreign matter features; When the foreign matter receiving amount is greater than the preset reference receiving amount, the blowing power of the blowing device is corrected with the preset blowing correction amount to output the corrected blowing power; Controlling the blowing device to blow air at the foreign body feature with a corrected blowing power so as to blow the foreign body feature toward the groove on the inclined surface of the shovel plate which is farther from the abutment position; Determine the foreign matter distribution rate of the foreign matter features on the inclined surface of the shovel plate according to the foreign matter receiving image and the foreign matter features; When and only when the foreign matter distribution rate reaches 1, the inclination angle of the shovel board is corrected with a preset angle correction amount and the correction angle is output; The shovel plate is controlled to tilt according to the correction angle to increase the tilt angle and receive more foreign matter.

8. The automatic manufacturing method of TPO skin according to claim 5, characterized in that: Wear repair methods include: Determine the printing defect position on the surface of the printed fabric after roller pressing according to the fabric surface image; Match the wear position of the printing roller surface according to the printing defect position; Determine the wear amount of the wear position according to the print pattern depth and the reference print depth; According to the wear position, determine other wear positions on the surface of the printing roller that are at the same circumferential position as the wear position and determine the total amount of wear; Matching the preset amount of repair fluid used for repair according to the total amount of wear; The preset repair device sleeve is controlled to be clamped at the circumferential position of the wear position, and the repair liquid is injected from the preset injection port according to the repair usage, and the repair device is removed after the preset solidification time.

9. An automatic manufacturing system for TPO skin, characterized in that: include: An acquisition module, used to acquire an image of the composite fabric after coating, an image of the surface of the printed fabric, an image of the surface of the printing roller, and an image of foreign matter received by the inclined surface of the shovel plate; A memory for storing a program of an automatic manufacturing method of a TPO skin according to any one of claims 1 to 8; The program in the memory can be loaded and executed by the processor to realize an automatic manufacturing method of TPO skin.

10. An intelligent terminal, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes the method for automatically manufacturing a TPO skin according to any one of claims 1 to 8.

Images