Butterfly valve manufacturing method and system and butterfly valve thereof

Abstract

The invention relates to a butterfly valve manufacturing method and system and a butterfly valve thereof, and relates to the field of valves.The butterfly valve manufacturing method comprises the steps that the weight detection value of a sealing ring is detected, and if the weight detection value does not accord with a reference weight value, air blowing is conducted, and resistance information is obtained; if the resistance information is abnormal, marking the position as an abnormal position and acquiring surface image information; determining feature types according to the surface image information and the abnormal features, wherein the feature types comprise multi-material features and less-material features; based on the multi-material features, the multi-material feature position is determined according to the surface image information, the multi-material features and the reference position, the multi-material feature type is determined according to the multi-material feature position, and the multi-material feature type comprises edge burrs and surface protrusions; on the basis of the edge burrs, a trimming device is controlled for trimming; based on the surface protrusions, a protrusion repairing method is used for repairing; and based on the material shortage feature, determining a material shortage feature position according to the surface image information, the material shortage feature and the reference position, and performing restoration by using a material shortage restoration method. The sealing effect of the butterfly valve is improved.

Description

Technical Field

[0001] The present invention relates to the field of valves, and in particular to a butterfly valve manufacturing method, system and butterfly valve. Background Art

[0002] Butterfly valve, also known as flap valve, is a simple regulating valve, widely used in low-pressure pipelines to control the flow of media.

[0003] The butterfly valve mainly includes a valve body and a disc that is rotatably installed in the valve body for opening and closing. The disc has a sealing ring around it. The sealing performance of the butterfly valve is mainly reflected by its own quality and the quality of the sealing ring. When the butterfly valve is used in a pipeline, in order to ensure that the pipeline can be sealed and leak-proof, the valve body and sealing ring need to be tested during the butterfly valve manufacturing process.

[0004] The traditional manufacturing method of butterfly valves mainly relies on manual inspection and judgment of materials and sealing rings, which is not only inefficient and has limited accuracy, but may also result in errors, causing quality problems when the butterfly valve leaves the factory and resulting in low sealing effect. Summary of the invention

[0005] In order to improve the sealing effect of a butterfly valve, the present invention provides a butterfly valve manufacturing method, a system and a butterfly valve.

[0006] In a first aspect, the present invention provides a method for manufacturing a butterfly valve, which adopts the following technical solution: A method for manufacturing a butterfly valve, comprising: Get the weight test value of the sealing ring; When the weight detection value is inconsistent with the preset reference weight value, the preset blowing device is controlled with the preset blowing force to blow air around the sealing ring and obtain resistance detection information; When the resistance detection information is inconsistent with the preset resistance reference information, the position where the blowing device is currently blowing is marked and defined as an abnormal position, and the surface image detection information of the sealing ring is obtained at the abnormal position; Determine the abnormal feature type according to the surface image detection information and the preset abnormal features, the abnormal feature type including the feature of more material and the feature of less material; Based on the multi-material features, the multi-material feature positions are determined according to the surface image detection information, the multi-material features and the preset reference positions, and the multi-material feature types are determined according to the multi-material feature positions, and the multi-material feature types include edge burrs and surface protrusions; Based on the edge burrs, controlling a preset trimming device to trim the edge burrs along the edge of the sealing ring; Based on the surface protrusions, the surface protrusions are repaired at the multi-material feature positions using a preset protrusion repair method; Based on the low-material feature, the low-material feature position is determined according to the surface image detection information, the low-material feature and the reference position, and the low-material feature is repaired at the low-material feature position using a preset low-material repair method.

[0007] By adopting the above technical solution, the weight detection value and resistance detection information of the sealing ring are obtained and compared with the reference information, and the abnormal position is determined, so as to identify abnormal features such as the feature of more material and the feature of less material. The surface image detection information is obtained at the abnormal position, and the type of abnormal feature is determined, so that the abnormal features can be classified and processed according to different situations, thereby improving the sealing performance and overall quality of the butterfly valve.

[0008] Optionally, a bulge repair method for repairing a surface bulge includes: Determine a protrusion profile and a protrusion surface area based on the surface image detection information and the surface protrusion; Determine the area enclosed by the contour according to the raised contour; The difference between the raised surface area and the area enclosed by the contour was calculated and defined as the corrected area; Match the cutting area of ​​the material to be cut according to the correction area; Match the number of cutting positions of the material to be cut according to the area of ​​the raised contour, and determine the cutting point position according to the number of cutting positions and the raised contour; Determine the single resection area of ​​each resection point location according to the resection area and the number of resection positions; Controlling a preset cutting device to heat to a preset melting temperature, controlling the cutting device to move to each cutting point position to cut the surface protrusion with a preset cutting shape and a single cutting area, and obtaining cutting image information of the cutting point position; Based on the inconsistency between the cut image information and the preset reference section image, it is defined as a perforation, the cutting device is controlled to directly cut off the surface protrusion, and the multi-material feature position after the cut is repaired by a preset perforation repair method; Based on the consistency between the resection image information and the reference section image, after the resection is completed, the preset pressing device is controlled to flatten the multi-material feature position within the preset cooling time.

[0009] By adopting the above technical solution, during the excision process, it is determined whether there is a perforation according to the excision image information, and corresponding repair measures are taken to ensure the accuracy of excision and repair. The surface protrusions are melted and removed by the heating device, which is conducive to smoother flattening. Then the pressing device is controlled to flatten the excision position during the cooling time to complete the repair, thereby improving the surface quality of the sealing ring.

[0010] Optional, short-material repair methods include: Determine the wear depth value of the feature position of the material shortage based on the surface image detection information; Based on the wear depth value being greater than the preset reference material thickness, it is defined as a perforation, and the pre-set perforation repair method is used to repair the feature position with less material; Based on the wear depth value not being greater than the reference material thickness, it is defined as surface wear, and the volume of the missing material is determined based on the weight test value and the reference weight value; The volume of the repair material used for repairing is matched with the characteristics of the multi-material after the multi-material is crushed according to the volume of the small material; Determine the area and outline of the missing material based on the surface image detection information and the missing material characteristics; The marking position and number of markings are matched to the feature position of the less-material according to the less-material area; The cutting device is controlled to cut on the surface of the feature position of the less material to produce the seepage seam according to the marking position, the number of markings and the preset inclined cutting angle; The preset heating device is controlled to melt the crushed multi-material features for repair at a preset heating temperature, and the repair device is controlled to inject the molten repair material into the position of the small-material feature along a preset spiral path to complete the repair.

[0011] By adopting the above technical solution, the wear depth value of the feature position with less material is analyzed, and different repair strategies are adopted according to the degree of wear. For perforation, the perforation repair method is adopted; for surface wear, the volume of the repair material is matched according to the volume of the less material, and the multi-material feature is crushed and used for repair to save materials, and the repair material is melted and flows into the seepage seam by marking to make the repair material better penetrate and adhere to the sealing ring material. The above operation can effectively restore the sealing performance of the feature position with less material; and the repair material can be evenly distributed by injecting the feature position with less material in a spiral path.

[0012] Optionally, both the perforation at the feature position of the multi-material and the perforation at the feature position of the small-material adopt a perforation repair method, and the perforation repair method includes: Determine the perforation profile based on the surface image detection information and the preset perforation features; matching a preset material specification of a patch material for inserting into the perforated feature according to the perforated profile; Determine the pressing distance of the pressing device according to the preset sealing ring inner cavity height; Determining the volume of patch material inserted into the perforated feature based on the perforation profile and the pressing distance; Determine the pressing force according to the preset strength and volume of the repair material; Determine the circumferential range area that needs to be heated in the repair material inserted into the perforation feature according to the pressing distance and the preset reserved distance; Controlling a preset heating device to heat the circumferential range of the repair material at a preset semi-molten temperature and to circumferentially heat the edge of the perforation profile at a preset preheating temperature; Controlling the insertion of the repair material into the perforation feature by a pressing distance and controlling the pressing device to press the repair material with a pressing force so as to flatten the repair material in the inner cavity of the sealing ring and adhere it to the inner surface of the perforation feature; The heating device is controlled to heat the repair material and the perforation feature along the perforation contour at a preset baking temperature to achieve connection. After the heating is completed, the preset cutting device is controlled to cut off the repair material exposed outside the perforation feature.

[0013] By adopting the above technical solution, matching the specifications of the repair material and determining the volume of the repair material, combined with the pressing force and heating treatment, efficient repair of the perforation feature can be achieved. The matching material specifications can make the repair material block the perforation feature, and heating the circumferential heating area can make the repair material in a semi-molten state, so that the repair material can better adhere to the inner surface of the perforation feature that has been heated. Flattening the repair material in the inner cavity of the sealing ring and adhering it to the inner surface can make the repair material more effective and firm, and the repair material outside the perforation feature is cut off.

[0014] Optionally, the material shortage feature also includes a surface crack feature, and the surface crack feature repair method includes: Determine the lighting position according to the feature position of the small amount of material; Controlling a preset illumination device to illuminate the illumination position with a preset reference illumination intensity, and obtaining the reflected illumination intensity of the reflected light at a preset receiving position; Determine the light intensity change amount according to the reference light intensity and the reflected light intensity; Match the crack depth according to the change in light intensity; Determine the surface crack area based on the surface image detection information and the position of the missing material feature; Match the repair volume according to the crack depth and surface crack area; The repair device is controlled to repair the surface crack features with a repair volume.

[0015] By adopting the above technical solution, the depth and area of ​​the cracks on the surface of the sealing ring are determined by using illumination and reflected light intensity detection. The crack depth can be determined according to the change in light intensity and the repair volume can be matched accordingly, so as to achieve accurate repair of surface crack characteristics. The crack position is illuminated by an illumination device to obtain the change in reflected light intensity, and the crack depth and area are determined in combination with the surface image detection information, so as to accurately control the injection amount of the repair material and effectively restore the surface quality of the sealing ring.

[0016] Optionally, when there are wrinkles on the surface of the sealing ring and the surface crack feature is on the wrinkle, the method for repairing the crack feature on the wrinkle includes: Determining the distance for spreading the folds according to the preset fold characteristics; Controlling a preset spreading device to spread the wrinkle feature at a spreading distance and controlling an illumination device to illuminate the surface crack feature on the wrinkle feature at a reference illumination intensity to obtain a light intensity variation and an illumination shadow angle; Match the wrinkle crack depth according to the light intensity variation; Match the bottom depth of the surface crack feature that is not illuminated by the illumination device according to the illumination shadow angle; Determine the corrected crack depth based on the fold crack depth and bottom depth; Matching and correcting the repair volume according to the corrected crack depth and surface crack area; The repair device is controlled to repair the surface crack features on the wrinkles by correcting the repair volume.

[0017] By adopting the above technical solution, for the surface crack features on the folds, the fold features are pried open by controlling the prying device so that the illumination device can irradiate light onto the surface crack features, thereby determining the depth and bottom depth of the crack, and obtaining the corrected repair volume by calculating the corrected crack depth match, thereby achieving accurate repair of the fold cracks. This method prys open the fold features for repair by the prying device, ensuring that the repair material can fully fill the cracks and improve the repair effect.

[0018] Optionally, when the wrinkle feature and the surface crack feature are located at the bottom of the sealing ring and cannot be directly illuminated by the illumination device, the method for repairing the surface crack feature at the bottom of the sealing ring includes: Determine the wrinkle position according to the surface image detection information and the preset wrinkle features; Determining the installation position of the preset reflector according to the fold position and the preset reflection distance; Controlling the peeling device to peel the wrinkle feature at a peeling distance, controlling the illumination device to generate a light source at a reference illumination intensity, and controlling the reflector to be set at an installation position to reflect the light source of the illumination device to the surface crack feature, and obtaining a light intensity change; Controlling the reflector to rotate so as to completely irradiate the light into the bottom of the surface crack, and obtaining the rotation angle of the reflector; Determine the crack shadow depth based on the reflection distance and rotation angle; Match the wrinkle crack depth according to the light intensity variation; Determine the corrected crack depth based on the fold crack depth and the crack shadow depth; Matching and correcting the repair volume according to the corrected crack depth and surface crack area; The repair device is controlled to repair the surface crack features on the wrinkles by correcting the repair volume.

[0019] By adopting the above technical solution, using the combination of a reflector and an illumination device, the light of the illumination device can be completely reflected by the reflector and incident on the bottom of the crack by rotating the reflector, thereby determining the crack shadow depth, and combining the light intensity change to correct the crack depth through system calculation, thereby matching and correcting the repair volume, and achieving the repair of the wrinkle crack. This method improves the accuracy of crack depth detection, ensures that the repair material can completely fill the crack, and ensures the sealing effect of the sealing ring.

[0020] Optionally, the sealing ring is assembled with the valve disc. When the valve disc is over-materialized, the friction between the two causes the sealing ring to wear. The treatment method for the valve disc being over-materialized includes: Obtain valve disc image information; Determine the scraping position, scraping volume and scraping profile according to the valve disc image information and the preset metal multi-material features; Determine the maximum width of the profile based on the scraped profile; Match the preset width specification of the scraper device according to the maximum width of the profile; Match the scraping force of the scraper device according to the scraping volume and the preset metal material; A scraper device is selected according to the width specification, and the scraper device is controlled to move to the scraping position, and the metal multi-material features at the scraping position are scraped with a scraping force, and whether there are metal multi-material features at the scraping position is re-identified according to the valve disc image information until the metal multi-material features are scraped off.

[0021] By adopting the above technical solution, the scraping position, volume and contour of the metal multi-material feature are determined through the analysis of the valve disc image information, and the corresponding scraper device specifications and scraping force are matched to achieve accurate scraping of the metal multi-material feature, ensuring the flatness and quality of the valve disc surface. This method scrapes the metal multi-material feature layer by layer through the scraper device, and uses image recognition technology to monitor the scraping effect in real time until the metal multi-material feature is completely removed, effectively improving the smoothness and sealing performance of the valve disc.

[0022] In a second aspect, the present application provides a butterfly valve manufacturing system, which adopts the following technical solution: A butterfly valve manufacturing system, comprising: An acquisition module is used to acquire the weight detection value of the sealing ring, the resistance detection information, the surface image detection information of the sealing ring, the excision image information of the excision point position, the wear depth value of the feature position of the less material, the reflected light intensity of the reflected light, the light intensity change, the light shadow angle, the rotation angle of the reflector and the valve disc image information; A memory for storing a program of a butterfly valve manufacturing method as described in any one of the above items; The program in the memory can be loaded and executed by the processor to implement a butterfly valve manufacturing method.

[0023] In a third aspect, the present application provides a butterfly valve, which adopts the following technical solution: A butterfly valve comprises a valve body and a valve flap rotatably mounted in the valve body for opening and closing, wherein the valve flap is circumferentially provided with a sealing ring for abutting against the inner wall of the valve body to form a seal.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: By adopting the above technical solution, the wear depth value of the feature position with less material is analyzed, and different repair strategies are adopted according to the degree of wear; for perforation, the perforation repair method is adopted; for surface wear, the volume of the repair material is matched according to the volume of the less material, and the multi-material feature is crushed and used for repair to save materials, and the repair material is melted and flows into the seepage seam by marking to make the repair material better penetrate and adhere to the sealing ring material. The above operation can effectively restore the sealing performance of the feature position with less material; and the repair material can be evenly distributed by injecting the feature position with less material in a spiral path; By adopting the above technical solution, the depth and area of ​​the cracks on the surface of the sealing ring are determined by using illumination and reflected light intensity detection. The crack depth can be determined according to the change in light intensity and the repair volume can be matched accordingly, so as to achieve accurate repair of surface crack characteristics. The crack position is illuminated by an illumination device to obtain the change in reflected light intensity, and the crack depth and area are determined in combination with the surface image detection information, so as to accurately control the injection amount of the repair material and effectively restore the surface quality of the sealing ring. By adopting the above technical scheme, for the surface crack features on the wrinkles, the wrinkle features are pried open by controlling the prying device so that the illumination device can irradiate light onto the surface crack features, thereby determining the depth and bottom depth of the crack, and obtaining the corrected repair volume by calculating the corrected crack depth match, thereby achieving accurate repair of the wrinkle cracks; this method uses the prying device to pry open the wrinkle features for repair, thereby ensuring that the repair material can fully fill the cracks and improving the repair effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a butterfly valve according to an embodiment of the present invention; Figure 2 is a method flow chart of a method for manufacturing a butterfly valve according to an embodiment of the present invention; Figure 3 It is a method flow chart of the bulge repair method according to an embodiment of the present invention.

[0026] The parts indicated by the numerical symbols in the above drawings are as follows: 1. valve body; 2. valve disc; 3. sealing ring. DETAILED DESCRIPTION

[0027] 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.

[0028] The embodiment of the present application discloses a butterfly valve.

[0029] Reference Figure 1 A butterfly valve comprises a valve body 1 and a valve disc 2 rotatably mounted in the valve body 1. The valve disc 2 is designed to be able to perform opening and closing operations to control the flow of fluid. In order to ensure the sealing performance of the valve when it is in a closed state, a sealing ring 3 is arranged at a circumferential position of the valve disc 2. The sealing ring 3 forms an effective sealing interface by closely contacting the inner wall of the valve body 1 to prevent the fluid from leaking when the valve is closed.

[0030] The embodiment of the present application discloses a method for manufacturing a butterfly valve, which identifies the multi-material feature and the low-material feature by acquiring the weight, resistance and surface image of the sealing ring 3. For the multi-material feature, the edge burrs or surface protrusions can be accurately located and removed; for the low-material feature, it can be repaired by cutting the seepage seam and injecting molten repair material. It can also handle the perforation feature, crack feature and the multi-material feature of the valve disc 2 metal, realize the detection and repair of the sealing ring 3, and thus improve the sealing effect of the butterfly valve.

[0031] Reference Figure 2 , a butterfly valve manufacturing method comprises the following steps: Step S100: obtaining the weight detection value of the sealing ring 3.

[0032] The weight detection value refers to the weight value of the sealing ring 3, which is the weight measured by a preset mass scale.

[0033] Step S101: when the weight detection value is inconsistent with the preset reference weight value, a preset blowing device is controlled with a preset blowing force to blow air circumferentially on the sealing ring 3 and obtain resistance detection information.

[0034] The reference weight value refers to the standard weight information of a normal sealing ring 3. The reference weight value is the weight of a normal sealing ring 3 preset by a technician.

[0035] The blowing force refers to the size of the blowing on the surface of the sealing ring 3, which is a constant value preset by the technician. By blowing on the surface of the sealing ring 3, the resistance detection information during the blowing can be obtained, thereby judging the surface type of the sealing ring 3.

[0036] The blowing device refers to a machine that can blow air to the surface of the sealing ring 3, and can be a blowing device such as a hair dryer; it is pre-set by a technician at the inspection station of the sealing ring 3 in the manufacturing line.

[0037] The resistance detection information refers to the resistance data of the surface of the sealing ring 3 obtained by blowing. The resistance detection information can be synchronously obtained through the pressure sensor preset on the blowing device to obtain the reaction force of the blowing device when blowing. The reaction force varies according to the blowing position and distance during blowing.

[0038] When the weight detection value is inconsistent with the preset reference weight value, it is determined that there is a problem with the sealing ring 3, so air is blown into it through the blowing device and resistance detection information is obtained; when the weight detection value is consistent with the preset reference weight value, the sealing ring 3 is normal and the detection is completed.

[0039] Step S102: When the resistance detection information is inconsistent with the preset resistance reference information, the position where the blowing device is currently blowing is marked and defined as an abnormal position, and the surface image detection information of the sealing ring 3 is obtained at the abnormal position.

[0040] The abnormal position refers to the position where the surface of the sealing ring 3 is not smooth or has defects.

[0041] The surface image detection information refers to image information obtained by a preset camera at an abnormal position on the surface of the sealing ring 3 .

[0042] When the resistance detection information is inconsistent with the preset resistance reference information, it means that there are abnormal features on the surface of the sealing ring 3, and the surface image detection information of the sealing ring 3 at the abnormal position is obtained; when the resistance detection information is consistent with the preset resistance reference information, the surface of the sealing ring 3 is normal, but there is an abnormality inside.

[0043] Step S103: determining the abnormal feature type according to the surface image detection information and the preset abnormal feature, wherein the abnormal feature type includes a high-material feature and a low-material feature.

[0044] Abnormal features refer to parameters such as images and shapes of edge burrs, surface protrusions, insufficient material features, perforation features, crack features, and wrinkle features on the surface of the sealing ring 3 in subsequent embodiments pre-set by technicians, which will not be elaborated here.

[0045] The multi-material features refer to parameters such as the image and shape of the redundant material features on the surface of the sealing ring 3, including edge burrs and surface protrusions.

[0046] The lack of material feature refers to the feature of missing material on the surface of the sealing ring 3, including perforation features and crack features.

[0047] By comparing the surface image detection information with the abnormal features, when the two are consistent, the specific abnormal features are determined, such as edge burrs, surface protrusions, insufficient material features, perforation features, crack features, and wrinkle features.

[0048] Step S104: Based on the multi-material features, the multi-material feature positions are determined according to the surface image detection information, the multi-material features and the preset reference positions, and the multi-material feature types are determined according to the multi-material feature positions, and the multi-material feature types include edge burrs and surface protrusions.

[0049] The reference position refers to a fixed reference point used to judge and identify the characteristics of multiple materials. It is pre-set by the technicians and will not be described in detail here.

[0050] The multi-material characteristic position refers to the specific position of the excess material on the surface of the sealing ring 3.

[0051] Multi-material feature types refer to the specific classification of multi-material features, including edge burrs and surface protrusions.

[0052] By identifying and analyzing the surface image detection information, the position of the multi-material feature in the surface image detection information can be obtained, and then combined with the reference position, the multi-material feature position can be obtained.

[0053] By analyzing the surface image detection information and multi-material feature recognition, the specific multi-material features are obtained in combination with the multi-material feature positions.

[0054] Step S105 : Based on the edge burrs, control a preset trimming device to trim the edge burrs along the edge of the sealing ring 3 .

[0055] Edge burrs refer to excess material or irregular edge portions on the surface edge of the sealing ring 3 .

[0056] The trimming device refers to a machine that can trim burrs, and is a device such as a trimmer that is set by a technician at a detection station of the sealing ring 3 in a manufacturing line.

[0057] The trimming device is controlled to move along the edge of the sealing ring 3 to the multi-material feature position, and the edge burrs are trimmed one by one. After the trimming is completed, the multi-material feature is flattened.

[0058] Step S106: Based on the surface protrusions, a preset protrusion repair method is used to repair the surface protrusions at the multi-material feature positions.

[0059] The surface protrusion refers to the excess material on the surface of the sealing ring 3.

[0060] The bulge repair method refers to a repair method for surface bulges. The specific method refers to step S200 to step S208, which will not be described in detail here.

[0061] By determining the position of multi-material features, surface protrusions can be repaired to improve the quality of the repair.

[0062] Step S107: Based on the low-material feature, determine the low-material feature position according to the surface image detection information, the low-material feature and the reference position, and repair the low-material feature at the low-material feature position using a preset low-material repair method.

[0063] The method for repairing the insufficient material refers to a method for repairing the insufficient material feature. The specific method is referred to step S300 to step S307 and will not be described in detail here.

[0064] The low-material feature position refers to the specific position of the low-material feature on the surface of the sealing ring 3. The low-material feature position is obtained by performing image recognition analysis on the low-material feature from the surface image detection information. The specific image recognition analysis method is the same as the method for determining the multi-material feature position in step S104, and is not described here. By determining the low-material feature position, the low-material feature can be repaired to improve the repair quality.

[0065] Reference Figure 3 The bulge repair method for repairing the surface bulge comprises the following steps: Step S200: determining the protrusion contour and the protrusion surface area according to the surface image detection information and the surface protrusions.

[0066] The raised profile refers to the shape of the raised edges of a surface.

[0067] The raised surface area refers to the actual surface area of ​​the raised portion of the surface.

[0068] The convex contour and the convex surface area are both obtained by performing image recognition analysis on the surface convexity from the surface image detection information, and the edge shape line of the surface convexity is taken as the convex contour, and the area enclosed by the edge shape line is taken as the convex surface area.

[0069] Step S201: determining the area enclosed by the contour according to the convex contour.

[0070] The area enclosed by the contour refers to the area enclosed by the convex contour. The calculation method of the area enclosed by the contour is common knowledge to those skilled in the art and will not be described in detail here.

[0071] Step S202: Calculate the difference between the protrusion surface area and the contour enclosed area, and define it as the correction area.

[0072] The corrected area is the difference between the raised surface area and the area enclosed by the contour, and is used to determine the area that needs repair.

[0073] Step S203: matching the cutting area of ​​the material to be cut according to the corrected area.

[0074] The cut-off area refers to the area of ​​the material that needs to be cut off on the surface protrusion. The corresponding cut-off area is obtained by matching the correction area with the preset cut-off area database. The cut-off area database is a database set by technicians in advance through experimental tests, which includes the corresponding relationship between the correction area and the cut-off area, which will not be described here.

[0075] Step S204: matching the number of cutting positions of the material to be cut according to the area of ​​the convex contour, and determining the cutting point position according to the number of cutting positions and the convex contour.

[0076] The number of resection positions refers to the number of resection points on the surface protrusion that need to be resected.

[0077] The resection point position refers to the specific position where the resection device resects the surface protrusion.

[0078] The corresponding number of resection positions is obtained by matching the convex contour area with the preset resection position number database. The resection position number database is a database set by technicians in advance through experimental tests, which includes the corresponding relationship between the convex contour area and the number of resection positions, which will not be described in detail here.

[0079] The positions of the excision points are obtained by arranging the excision points at equal intervals on the convex contour after obtaining the distance between two adjacent excision points through calculation and analysis of the convex contour and the number of excision positions.

[0080] Step S205: determining a single resection area at each resection point position according to the resection area and the number of resection positions.

[0081] The single cut area refers to the area of ​​the material removed on the surface protrusion in a single time. The size of the single cut area is the same for each cut. It is calculated by the quotient of the cut area and the number of cut positions.

[0082] Step S206: Control the preset cutting device to heat to the preset melting temperature, control the cutting device to move to each cutting point position to cut the surface protrusion with the preset cutting shape and single cutting area, and obtain the cutting image information of the cutting point position.

[0083] The cutting device refers to a device used to cut off surface protrusions, which generally includes a cutting blade for cutting off the surface protrusions, a heating element for heating the cutting blade, and a moving part for controlling the movement of the cutting blade and the heating element.

[0084] The melting temperature refers to a preset temperature at which the blade can heat the sealing ring 3 material until it is in a molten state.

[0085] The cutout shape is a preset triangular cutout shape.

[0086] The excision image information refers to the image information of the excision point position obtained by the camera.

[0087] The heating device is controlled to heat the blade on the cutting device to the melting temperature of the material, and the material is melted at high temperature. The cutting device is then controlled to move to the cutting point position, and the raised part of the surface of the sealing ring 3 material is cut off with a triangular cutting shape and a single cutting area, and real-time image information of the cutting point is obtained.

[0088] Step S207: Based on the inconsistency between the excision image information and the preset reference section image, it is defined as a perforation, and the excision device is controlled to directly excise the surface protrusion, and the multi-material feature position after excision is repaired with a preset perforation repair method.

[0089] The reference section image refers to pre-set intact image information without perforation, which is set in advance by the technician and will not be described in detail here.

[0090] The perforation repair method refers to a repair method for perforation features. The specific method refers to step S400 to step S408, which will not be described in detail here.

[0091] When the excision image information is inconsistent with the preset reference section image, it is a perforation feature, and all surface protrusions are removed and repaired using the perforation repair method.

[0092] Step S208: Based on the consistency between the resection image information and the reference section image, after the resection is completed, the preset pressing device is controlled to flatten the multi-material feature position within the preset cooling time.

[0093] The pressing device refers to a device that can perform a flattening operation on the multi-material feature position after cutting, and is pre-set by a technician at the inspection station of the sealing ring 3 in the manufacturing line.

[0094] Cooling time refers to the time required for the material to cool to a suitable flattening state after cutting. It is a parameter preset by technicians based on material properties and ambient temperature.

[0095] When the cut image information is consistent with the preset reference section image, the surface protrusions are continued to be flattened to make the material surface flat.

[0096] The short material repair method includes the following steps: Step S300: determining the wear depth value of the feature position of the material shortage based on the surface image detection information.

[0097] The wear depth value refers to the depth value of the depression formed on the surface of the sealing ring 3 material due to wear, and is obtained by performing image recognition on the feature position of the material shortage on the surface image detection information.

[0098] Step S301: Based on the wear depth value being greater than a preset reference material thickness, it is defined as a perforation, and the short-material feature position is repaired using a preset perforation repair method.

[0099] The reference material thickness refers to a preset standard thickness value of the sealing ring 3 material, which is set by a technician in advance by measuring the thickness of the sealing ring 3 material.

[0100] The perforation repair method refers to step S400 to step S408, which will not be described in detail here.

[0101] Step S302: Based on the wear depth value being no greater than the reference material thickness, it is defined as surface wear, and the volume of the missing material is determined according to the weight detection value and the reference weight value.

[0102] Surface wear refers to the characteristics of surface wear of the sealing ring 3 due to transportation, assembly or friction during the manufacturing process.

[0103] The missing material volume refers to the volume of material missing from the surface of the sealing ring 3 due to wear, and is obtained by calculating and analyzing the difference information between the weight detection value and the reference weight value.

[0104] Step S303: matching the volume of the multi-material with the characteristics of the multi-material according to the volume of the small-material to obtain the volume of the repair material used for repair.

[0105] The repair material volume refers to the volume of the multi-material feature after the cutting device crushes the multi-material feature. The repair material volume is consistent with the small material volume.

[0106] Step S304: Determine the area and outline of the missing material according to the surface image detection information and the missing material characteristics.

[0107] The short-material area refers to the actual area size of the short-material feature.

[0108] The undercut contour refers to the edge shape of the undercut feature.

[0109] The lack of material area and the lack of material contour are obtained by performing image recognition analysis on the lack of material features from the surface image detection information. The specific image recognition analysis method is the same as the method for determining the protrusion surface area and the protrusion contour in step S200, and will not be repeated here.

[0110] Step S305: matching the area of ​​the short-material to the characteristic position of the short-material to determine the position and number of lines to be drawn.

[0111] The marking position refers to the specific position where marking is performed at the feature position with little material.

[0112] The number of markings refers to the number of markings made at the feature location with less material.

[0113] The corresponding marking position and number of markings are obtained by matching the area of ​​less material with the preset marking database. The marking database is a database set by technicians in advance through experimental tests, which includes the corresponding relationship between the area of ​​less material and the marking position and number of markings, which will not be described in detail here.

[0114] Step S306: Controlling the cutting device to perform scribing on the surface of the feature position with little material to generate a seepage seam according to the scribing position, the number of scribing lines and the preset inclined scribing angle.

[0115] The inclined cutting angle refers to the angle at which the cutting device is inclined during cutting. The inclined angle is set by the technicians in advance through experimental tests and will not be described in detail here.

[0116] The cutting device is controlled by an inclined cutting angle to mark the corresponding marking positions on the surface of the feature position with less material according to the number of markings. The resulting seepage gap can guide the filling of the repair material, so that the repair material can penetrate the seepage gap more evenly, resulting in a better repair effect.

[0117] Step S307: Control the preset heating device to melt the crushed multi-material features for repair at a preset heating temperature, and control the repair device to inject the molten repair material into the position of the small-material feature along a preset spiral path to complete the repair.

[0118] The heating device refers to a device capable of heating the repair material, and is pre-installed by a technician at the inspection station of the sealing ring 3 in the manufacturing line.

[0119] The heating temperature refers to the temperature at which the repair material can be melted by heat, and is a value preset by the technician.

[0120] The spiral path is a parameter set manually by technicians and will not be described in detail here.

[0121] The repair device is controlled to inject the molten repair material into the feature position with less material in a spiral path for repair, thereby ensuring that the repair material is evenly distributed in the feature position with less material.

[0122] The perforation repair method is used for both the perforation at the characteristic position of multiple materials and the perforation at the characteristic position of less materials. The perforation repair method includes the following steps: Step S400: determining a perforation profile according to surface image detection information and preset perforation features.

[0123] The perforation feature refers to the feature of the perforation on the surface of the sealing ring 3, which is a feature preset by a technician and will not be described in detail here.

[0124] The perforation contour refers to the edge shape of the perforation feature, which is obtained by performing image recognition analysis on the perforation feature from the surface image detection information. The specific image recognition analysis method is the same as the method for determining the convex contour in step S200, and will not be repeated here.

[0125] Step S401: matching the preset material specification of the repair material for inserting the perforation feature according to the perforation profile.

[0126] The repair material refers to the sealing ring 3 material used to repair the perforation feature, and the sealing ring 3 material cut off by the cutting device can be selected.

[0127] Material specifications refer to the size, shape, material and other parameters of the repair material. The material specifications are consistent with the size of the perforation contour.

[0128] Step S402: Determine the pressing distance of the pressing device according to the preset sealing ring inner cavity height.

[0129] The sealing ring inner cavity height refers to the height value of the inner cavity of the sealing ring, which is pre-set by technical personnel based on actual conditions and will not be elaborated here.

[0130] The pressing distance refers to the pressing depth distance required by the pressing device during the repair process, and its size is consistent with the height of the inner cavity of the sealing ring.

[0131] Step S403: Determine the volume of the repair material inserted into the perforation feature according to the perforation profile and the pressing distance.

[0132] The repair material volume refers to the volume of material required to repair the perforated feature. It is calculated by multiplying the area corresponding to the perforated contour by the pressing distance.

[0133] Step S404: Determine the pressing force according to the preset strength and volume of the repair material.

[0134] The strength of the repair material refers to the hardness and compressive strength of the repair material.

[0135] The pressing force refers to the magnitude of the force applied by the pressing device to the repair material. The corresponding pressing force is obtained by matching the strength and volume of the repair material with the preset pressing force database. The pressing force database is a database set by technicians in advance through experimental tests, which includes the corresponding relationship between the strength and volume of the repair material and the pressing force, which will not be repeated here.

[0136] Step S405: Determine the circumferential range area that needs to be heated in the repair material inserted into the perforation feature according to the pressing distance and the preset reserved distance.

[0137] The reserved distance refers to the reserved space distance between the repair material after it is inserted into the perforation feature and the inner surface of the sealing ring 3. The reserved distance is a distance pre-set by a technician, and will not be described in detail here.

[0138] The circumferential range area refers to the annular area at the bottom of the repair material that needs to be heated.

[0139] It is determined by calculating the pressing distance and the reserved distance.

[0140] Step S406: Control the preset heating device to heat the circumferential range of the repair material at a preset semi-molten temperature and to circumferentially heat the edge position of the perforation profile at a preset preheating temperature.

[0141] The semi-molten temperature refers to the temperature at which the repair material reaches a semi-molten state between solid and liquid during the heating process.

[0142] The preheating temperature refers to the temperature at which the edge of the perforated contour reaches a suitable bonding temperature.

[0143] The semi-melting temperature and preheating temperature are pre-set by technicians according to the material properties and will not be described in detail here.

[0144] By heating the circumferential range area and the edge position of the perforation contour, it is ensured that the repair material is closely combined with the perforation contour, so that the repair effect is better.

[0145] Step S407: Control the repair material to be inserted into the perforation feature by the pressing distance and control the pressing device to press the repair material with the pressing force so as to flatten the repair material in the inner cavity of the sealing ring 3 and adhere it to the inner surface of the perforation feature.

[0146] The repair material is controlled to enter the perforation feature by the pressing distance, and the repair material is compressed by adjusting the pressing device to apply appropriate force so that the repair material can fill the perforation feature and adhere to its inner surface, ensuring that the repair material fits tightly with the perforation feature, thereby improving the sealing effect.

[0147] Step S408: Control the heating device to heat the repair material and the perforation feature along the perforation contour at a preset baking temperature to achieve connection, and after heating is completed, control the preset cutting device to cut off the repair material exposed outside the perforation feature.

[0148] The baking temperature refers to the temperature at which the repair material can be completely cured when the heating device bakes the repair material. The baking temperature is a temperature preset by a technician and will not be described in detail here.

[0149] The heating device is controlled to heat the connection portion between the repair material and the perforation feature at a baking temperature, and the cutting device is then controlled to cut off the repair material outside the perforation feature, thereby ensuring the sealing of the material.

[0150] The short material feature also includes a surface crack feature, and the surface crack feature repair method includes the following steps: Step S500: determining the illumination position according to the feature position of the material shortage.

[0151] The lighting position refers to the specific position where lighting detection is required.

[0152] The illumination position is consistent with the feature position of the small amount of material.

[0153] Step S501: controlling a preset illumination device to illuminate an illumination position with a preset reference illumination intensity, and obtaining a reflected illumination intensity of reflected light at a preset receiving position.

[0154] The illumination device refers to a device for illumination detection of the characteristic position of the small amount of material, such as a laser device. The illumination device is pre-set by a technician at the detection station of the sealing ring 3 in the manufacturing line.

[0155] The reference illumination intensity refers to the standard illumination intensity set by the illumination device during illumination. The reference illumination intensity is the illumination intensity pre-set by the technicians, and will not be described in detail here.

[0156] The receiving position refers to the specific position where the reflected light is received. The receiving position is a position preset by a technician, and will not be described in detail here.

[0157] Reflected light intensity is the light intensity captured by the receiving location.

[0158] By irradiating the illumination position and then receiving the reflected light, the corresponding crack depth can be obtained according to the change in illumination before and after.

[0159] Step S502: determining the light intensity variation according to the reference light intensity and the reflected light intensity.

[0160] The light intensity variation is the variation of the light intensity, which is the difference between the reference light intensity and the reflected light intensity.

[0161] Step S503: Match the crack depth according to the light intensity variation.

[0162] Crack depth refers to the depth value of the surface crack feature. The corresponding crack depth is obtained by matching the light intensity change with the preset crack depth database. The crack depth database is a database set by technicians in advance through experimental tests, which includes the corresponding relationship between the light intensity change and the crack depth, which will not be described here.

[0163] Step S504: determining the surface crack area according to the surface image detection information and the feature position of the material shortage.

[0164] The surface crack area refers to the actual area occupied by the surface crack feature on the surface of the sealing ring 3.

[0165] The surface crack area is obtained by performing image recognition on the surface crack features from the surface image detection information and combining it with the position analysis of the feature of the material shortage. The specific image recognition and analysis method is the same as the method for determining the surface area of ​​the protrusion in step S200, and will not be described in detail here.

[0166] Step S505: Matching the repair volume according to the crack depth and the surface crack area.

[0167] Repair volume refers to the volume of repair material required.

[0168] The repair volume is calculated by multiplying the crack depth and the surface crack area.

[0169] Step S506: Control the repair device to repair the surface crack features with the repair volume.

[0170] The specific repair method is the same as the repair method in step S307, and will not be described in detail here.

[0171] When there are wrinkles on the surface of the sealing ring 3 and the surface crack features are on the wrinkles, the method for repairing the crack features on the wrinkles includes the following steps: Step S600: determining a distance for spreading the wrinkles according to preset wrinkle characteristics.

[0172] The wrinkle feature refers to parameters such as the image and shape of the wrinkles appearing on the surface of the sealing ring 3 .

[0173] The pulling distance refers to the specific distance of pulling apart the wrinkles. The corresponding pulling distance is obtained by matching the wrinkle characteristics with the preset pulling distance database. The crack depth database is a database set by technicians in advance through experimental tests, which includes the corresponding relationship between wrinkle characteristics and pulling distance matching, which will not be described here.

[0174] Step S601: Control the preset spreading device to spread the wrinkle feature at a spreading distance and control the illumination device to illuminate the surface crack feature on the wrinkle feature at a reference illumination intensity to obtain the light intensity variation and illumination shadow angle.

[0175] The peeling device refers to a device that can peel apart the wrinkle features, such as an electric mechanical claw, which is pre-set by a technician at the inspection station of the sealing ring 3 in the manufacturing line.

[0176] The illumination-shadow angle refers to the angle formed by the shadow cast by the light on the wrinkle feature and the crack feature.

[0177] The method for obtaining the light intensity variation is the same as that in step S502, and is not described in detail here. The illumination shadow angle is calculated by the angle between the shadow in the acquired image information and the crack feature.

[0178] Step S602: Matching the wrinkle crack depth according to the light intensity variation.

[0179] The wrinkle crack depth refers to the depth value of the surface crack feature on the wrinkle feature. The matching method is the same as that in step S503 and will not be described here.

[0180] Step S603: Matching the bottom depth of the surface crack feature that is not illuminated by the illumination device according to the illumination shadow angle.

[0181] The bottom depth refers to the specific depth value of the unilluminated area at the bottom of the surface crack feature. The corresponding crack depth is obtained by matching the illumination shadow angle with the preset bottom depth database. The bottom depth database is a database set by technicians in advance through experimental tests, which includes the corresponding relationship between the illumination shadow angle and the bottom depth matching, which will not be described here.

[0182] Step S604: determining the corrected crack depth according to the wrinkle crack depth and the bottom depth.

[0183] The corrected crack depth refers to the crack depth value obtained by recalculation, which is the sum of the fold crack depth and the bottom depth.

[0184] Step S605: Correct the repair volume according to the corrected crack depth and the surface crack area.

[0185] Correcting the repair volume means recalculating the volume of repair material required.

[0186] Calculated by the product of the corrected crack depth and the surface crack area.

[0187] Step S606: Control the repair device to repair the surface crack features on the wrinkles with a corrected repair volume.

[0188] The specific repair method is the same as the repair method in step S307, and will not be described in detail here.

[0189] When the wrinkle feature and the surface crack feature are at the bottom of the sealing ring 3 and cannot be directly illuminated by the illumination device, the method for repairing the surface crack feature at the bottom of the sealing ring 3 includes the following steps: Step S700: determining the wrinkle position according to the surface image detection information and the preset wrinkle features.

[0190] The wrinkle position refers to the specific position of the wrinkles appearing at the bottom of the sealing ring 3.

[0191] The wrinkle position is obtained by performing image recognition analysis on wrinkle features from the surface image detection information. The specific image recognition analysis method is the same as the method for determining the multi-material feature position in step S104, and will not be described in detail here.

[0192] Step S701: Determine the installation position of the preset reflector according to the fold position and the preset reflection distance.

[0193] The reflection distance refers to the distance between the reflector and the fold position. It is a distance pre-set by the technicians and will not be described in detail here.

[0194] The reflector is a pre-set mirror that reflects light to the bottom. The installation position of the reflector is determined by calculating the fold position and the reflection distance.

[0195] Step S702: Control the spreading device to spread the wrinkle feature at a spreading distance, control the illumination device to generate a light source at a reference illumination intensity, and control the reflector to be set at an installation position to reflect the light source of the illumination device to the surface crack feature to obtain a light intensity change.

[0196] The method for obtaining the light intensity variation is the same as that in step S502, and is not described in detail here. The illumination shadow angle is calculated by combining the angle between the shadow in the acquired image information and the crack feature.

[0197] Step S703: Control the reflector to rotate so as to completely irradiate the light into the bottom of the surface crack, and obtain the rotation angle of the reflector.

[0198] The rotation angle refers to the angle of rotation required to adjust the reflector so that the light completely penetrates the bottom of the surface crack. The angle sensor preset on the reflector obtains the rotation angle of the reflector when controlling the reflector to rotate so that the light completely penetrates the bottom of the surface crack.

[0199] Step S704: determining the crack shadow depth according to the reflection distance and the rotation angle.

[0200] The crack shadow depth refers to the shadow depth value formed by the light at the bottom of the crack after the reflector is rotated. It is calculated by the reflection distance and the rotation angle.

[0201] Step S705: Matching the wrinkle crack depth according to the light intensity variation.

[0202] The matching method is the same as that in step S602 and will not be described in detail here.

[0203] Step S706: Determine the corrected crack depth according to the wrinkle crack depth and the crack shadow depth.

[0204] The determination method is the same as that in step S604 and will not be described in detail here.

[0205] Step S707: Correct the repair volume according to the corrected crack depth and the surface crack area.

[0206] The matching method is the same as that in step S605 and will not be described in detail here.

[0207] Step S708: Control the repair device to repair the surface crack features on the wrinkles with a corrected repair volume.

[0208] The specific repair method is the same as the repair method in step S307, and will not be described in detail here.

[0209] The sealing ring 3 is assembled with the valve disc 2. When the valve disc 2 is over-materialized, the friction between the two causes the sealing ring 3 to wear. The method for handling the over-materialization of the valve disc 2 includes the following steps: Step S800: Acquire the image information of the valve flap 2.

[0210] The valve flap 2 image information refers to the metal image of the valve flap 2 surface obtained by the camera.

[0211] Step S801: Determine the scraping position, scraping volume and scraping contour according to the image information of the valve flap 2 and the preset metal multi-material characteristics.

[0212] The scraping position refers to the specific position of the metal multi-material feature that needs to be scraped off.

[0213] The scrape volume is the volume of the metal feature that needs to be scraped off.

[0214] The scraping profile refers to the edge shape of the metal feature that needs to be scraped.

[0215] The metal multi-material feature refers to the image, shape and other parameters of the redundant metal part on the surface of the valve flap 2. The metal multi-material feature is data preset by the technician, including the metal multi-material feature on the valve flap 2, which will not be described here.

[0216] The scraping volume is obtained by performing image recognition and comparison analysis on the metal multi-material features from the surface image detection information; the scraping position and the scraping contour are obtained by image recognition and analysis. The specific image recognition and analysis method is the same as the method for determining the multi-material feature position in step S104 and the raised contour in step S200, and will not be repeated here.

[0217] Step S802: Determine the maximum width of the contour according to the scraped contour.

[0218] The maximum width of the contour refers to the width of the longest part of the scraped contour. The width values ​​of all scraped contours are calculated, and the maximum width is selected after comparison.

[0219] Step S803: matching the preset width specification of the scraper device according to the maximum width of the profile.

[0220] The scraper device is a pre-set device for scraping off metal multi-material features, such as a stainless steel scraper. The scraper device is pre-set by a technician on the inspection station of the sealing ring 3 in the manufacturing line.

[0221] The width specification refers to the blade width of the scraper device. The corresponding width specification is obtained by matching the maximum width of the profile with the preset width specification database. The bottom depth database is a database set by technicians in advance through experimental tests, which includes the corresponding relationship between the maximum width of the profile and the width specification, which will not be repeated here.

[0222] Step S804: matching the scraping force of the scraper device according to the scraping volume and the preset metal material.

[0223] Scraping force refers to the force required by the scraper device to scrape off the multi-material features of metal. The corresponding crack depth is obtained by matching the scraping volume and metal material with the preset scraping force database. The scraping force database is a database set by technicians in advance through experimental tests, which includes the corresponding relationship between scraping volume and metal material matching scraping force, which will not be elaborated here.

[0224] The metal material refers to the material type of the metal on the surface of the valve flap 2 which is preset by the technicians.

[0225] Step S805: Select a scraper device according to the width specification, control the scraper device to move to the scraping position, and scrape the metal multi-material features at the scraping position with a scraping force, and re-identify whether there are metal multi-material features at the scraping position according to the image information of the valve disc 2 until the metal multi-material features are scraped off.

[0226] The scraper device selected according to the appropriate width specification can efficiently scrape off the metal multi-material features. By re-identifying the image information of the valve disc 2, it can be confirmed whether there is any residue, so that the metal multi-material can be adjusted and scraped off.

[0227] Based on the same inventive concept, an embodiment of the present invention provides a butterfly valve manufacturing system, including: The acquisition module is used to obtain the weight detection value of the sealing ring 3, the resistance detection information, the surface image detection information of the sealing ring 3, the excision image information of the excision point position, the wear depth value of the feature position of the lack of material, the reflected light intensity of the reflected light, the light intensity change, the light shadow angle, the rotation angle of the reflector and the image information of the valve disc 2.

[0228] A memory is used to store a program of a butterfly valve manufacturing method.

[0229] The program in the memory can be loaded and executed by the processor to implement a butterfly valve manufacturing method.

[0230] 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 manufacturing a butterfly valve, characterized in that: include: Obtaining a weight detection value of the sealing ring (3); When the weight detection value is inconsistent with the preset reference weight value, a preset blowing device is controlled with a preset blowing force to blow air circumferentially around the sealing ring (3) and obtain resistance detection information; When the resistance detection information is inconsistent with the preset resistance reference information, the position where the blowing device is currently blowing is marked and defined as an abnormal position, and surface image detection information of the sealing ring (3) is obtained at the abnormal position; Determine the abnormal feature type based on the surface image detection information and the preset abnormal features. The feature types include multi-material features and small-material features; Based on the multi-material features, the multi-material feature positions are determined according to the surface image detection information, the multi-material features and the preset reference positions, and the multi-material feature types are determined according to the multi-material feature positions, and the multi-material feature types include edge burrs and surface protrusions; Based on the edge burrs, controlling a preset trimming device to trim the edge burrs along the edge of the sealing ring (3); Based on the surface protrusions, the surface protrusions are repaired at the multi-material feature positions using a preset protrusion repair method; Based on the low-material feature, the low-material feature position is determined according to the surface image detection information, the low-material feature and the reference position, and the low-material feature is repaired at the low-material feature position using a preset low-material repair method.

2. A method for manufacturing a butterfly valve according to claim 1, characterized in that: Bump repair methods to repair surface bumps include: Determine a protrusion profile and a protrusion surface area based on the surface image detection information and the surface protrusion; Determine the area enclosed by the contour according to the raised contour; The difference between the raised surface area and the area enclosed by the contour was calculated and defined as the corrected area; Match the cutting area of ​​the material to be cut according to the correction area; Match the number of cutting positions of the material to be cut according to the area of ​​the raised contour, and determine the cutting point position according to the number of cutting positions and the raised contour; Determine the single resection area of ​​each resection point location according to the resection area and the number of resection positions; Controlling a preset cutting device to heat to a preset melting temperature, controlling the cutting device to move to each cutting point position to cut the surface protrusion with a preset cutting shape and a single cutting area, and obtaining cutting image information of the cutting point position; Based on the inconsistency between the cut image information and the preset reference section image, it is defined as a perforation, the cutting device is controlled to directly cut off the surface protrusion, and the multi-material feature position after the cut is repaired by a preset perforation repair method; Based on the consistency between the resection image information and the reference section image, after the resection is completed, the preset pressing device is controlled to flatten the multi-material feature position within the preset cooling time.

3. A method for manufacturing a butterfly valve according to claim 1, characterized in that: The methods for repairing insufficient materials include: Determine the wear depth value of the feature position of the material shortage based on the surface image detection information; Based on the wear depth value being greater than the preset reference material thickness, it is defined as a perforation, and the pre-set perforation repair method is used to repair the feature position with less material; Based on the wear depth value not being greater than the reference material thickness, it is defined as surface wear, and the volume of the missing material is determined based on the weight test value and the reference weight value; The volume of the repair material used for repairing is matched with the characteristics of the multi-material after the multi-material is crushed according to the volume of the small material; Determine the area and outline of the missing material based on the surface image detection information and the missing material characteristics; The marking position and number of markings are matched to the feature position of the less-material according to the less-material area; The cutting device is controlled to cut on the surface of the feature position of the less material to produce the seepage seam according to the marking position, the number of markings and the preset inclined cutting angle; The preset heating device is controlled to melt the crushed multi-material features for repair at a preset heating temperature, and the repair device is controlled to inject the molten repair material into the position of the small-material feature along a preset spiral path to complete the repair.

4. A method for manufacturing a butterfly valve according to any one of claims 2 or 3, characterized in that: The perforation repair method is used for both the perforation at the characteristic position of multiple materials and the perforation at the characteristic position of less materials. The perforation repair method includes: Determine the perforation profile based on the surface image detection information and the preset perforation features; matching a preset material specification of a patch material for inserting into the perforated feature according to the perforated profile; Determine the pressing distance of the pressing device according to the preset sealing ring inner cavity height; Determining the volume of patch material inserted into the perforated feature based on the perforation profile and the pressing distance; Determine the pressing force according to the preset strength and volume of the repair material; Determine the circumferential range area that needs to be heated in the repair material inserted into the perforation feature according to the pressing distance and the preset reserved distance; Controlling a preset heating device to heat the circumferential range of the repair material at a preset semi-molten temperature and to circumferentially heat the edge of the perforation profile at a preset preheating temperature; Controlling the insertion of the repair material into the perforation feature by a pressing distance and controlling the pressing device to press the repair material with a pressing force so that the repair material in the inner cavity of the sealing ring (3) is flattened and adhered to the inner surface of the perforation feature; The heating device is controlled to heat the repair material and the perforation feature along the perforation contour at a preset baking temperature to achieve connection. After the heating is completed, the preset cutting device is controlled to cut off the repair material exposed outside the perforation feature.

5. A method for manufacturing a butterfly valve according to claim 3, characterized in that: The feature of insufficient material also includes the feature of surface cracks. The repair methods of surface cracks include: Determine the lighting position according to the feature position of the small amount of material; Controlling a preset illumination device to illuminate the illumination position with a preset reference illumination intensity, and obtaining the reflected illumination intensity of the reflected light at a preset receiving position; Determine the light intensity change amount according to the reference light intensity and the reflected light intensity; Match the crack depth according to the change in light intensity; Determine the surface crack area based on the surface image detection information and the position of the missing material feature; Match the repair volume according to the crack depth and surface crack area; The repair device is controlled to repair the surface crack features with a repair volume.

6. A method for manufacturing a butterfly valve according to claim 5, characterized in that: When wrinkles exist on the surface of the sealing ring (3) and the surface crack features are located on the wrinkles, the method for repairing the crack features on the wrinkles includes: Determining the distance for spreading the folds according to the preset fold characteristics; Controlling a preset spreading device to spread the wrinkle feature at a spreading distance and controlling an illumination device to illuminate the surface crack feature on the wrinkle feature at a reference illumination intensity to obtain a light intensity variation and an illumination shadow angle; Match the wrinkle crack depth according to the light intensity variation; Match the bottom depth of the surface crack feature that is not illuminated by the illumination device according to the illumination shadow angle; Determine the corrected crack depth based on the fold crack depth and bottom depth; Matching and correcting the repair volume according to the corrected crack depth and surface crack area; The repair device is controlled to repair the surface crack features on the wrinkles by correcting the repair volume.

7. A method for manufacturing a butterfly valve according to claim 6, characterized in that: When the wrinkle feature and the surface crack feature are located at the bottom of the sealing ring (3) and cannot be directly illuminated by the lighting device, the method for repairing the surface crack feature at the bottom of the sealing ring (3) includes: Determine the wrinkle position according to the surface image detection information and the preset wrinkle features; Determining the installation position of the preset reflector according to the fold position and the preset reflection distance; Controlling the peeling device to peel the wrinkle feature at a peeling distance, controlling the illumination device to generate a light source at a reference illumination intensity, and controlling the reflector to be set at an installation position to reflect the light source of the illumination device to the surface crack feature, and obtaining a light intensity change; Controlling the reflector to rotate so as to completely irradiate the light into the bottom of the surface crack, and obtaining the rotation angle of the reflector; Determine the crack shadow depth based on the reflection distance and rotation angle; Match the wrinkle crack depth according to the light intensity variation; Determine the corrected crack depth based on the fold crack depth and the crack shadow depth; Matching and correcting the repair volume according to the corrected crack depth and surface crack area; The repair device is controlled to repair the surface crack features on the wrinkles by correcting the repair volume.

8. A method for manufacturing a butterfly valve according to claim 1, characterized in that: The sealing ring (3) is assembled with the valve disc (2). When the valve disc (2) is overfilled, the two rub against each other, thereby causing the sealing ring (3) to wear. The method for handling the overfilled valve disc (2) includes: Acquiring valve disc (2) image information; Determining a scraping position, a scraping volume, and a scraping profile according to the image information of the valve disc (2) and preset metal multi-material features; Determine the maximum width of the profile based on the scraped profile; Match the preset width specification of the scraper device according to the maximum width of the profile; Match the scraping force of the scraper device according to the scraping volume and the preset metal material; A scraper device is selected according to the width specification, the scraper device is controlled to move to a scraping position, and the metal multi-material feature at the scraping position is scraped with a scraping force, and whether the metal multi-material feature exists at the scraping position is re-identified according to the image information of the valve disc (2) until the metal multi-material feature is scraped off.

9. A butterfly valve manufacturing system, characterized in that: include: An acquisition module, used to acquire a weight detection value of the sealing ring (3), resistance detection information, surface image detection information of the sealing ring (3), excision image information of the excision point position, wear depth value of the feature position of the less material, reflected light intensity of the reflected light, light intensity variation, light shadow angle, rotation angle of the reflector, and image information of the valve disc (2); A memory for storing a program of a method for manufacturing a butterfly valve according to any one of claims 1 to 8; The program in the memory can be loaded and executed by the processor to implement a butterfly valve manufacturing method.

10. A butterfly valve manufactured by a butterfly valve manufacturing method according to any one of claims 1 to 8, characterized in that: It comprises a valve body (1) and a valve flap (2) rotatably mounted in the valve body (1) for opening and closing, wherein the valve flap (2) is circumferentially provided with a sealing ring (3) for abutting against the inner wall of the valve body (1) to form a seal.

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