Refrigerator door body appearance detection method and system and electronic equipment

Abstract

The invention discloses a method for detecting the appearance of a refrigerator door body. The method comprises the following steps that a refrigerator to be detected is conveyed to an acceleration area on a conveying production line; code scanning is carried out, and preset door body detection standard information of the to-be-detected refrigerator stored in the cloud is called; a refrigerator to be detected is positioned and grabbed through an auxiliary positioning detection mechanism, and a plurality of cameras acquire detection image information of the refrigerator to be detected; and the edge end calculates and generates detection output information of the to-be-detected refrigerator, analyzes and compares whether the detection output information and preset door body detection standard information are in a qualified error range, and outputs a detection result. Standard data of door body color, size, door body installation spacing, longitudinal axis and vertical axis flatness can be called through code scanning, fixed position image acquisition is realized through door body positioning grabbing at the edge end, door body real object installation real-time data is calculated, and standard values are compared, so that the accuracy of door body real object installation is improved. Therefore, whether the appearance of the door body is qualified or not can be detected through cloud edge collaboration, image recognition and other modes.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerator door appearance detection, and in particular to a refrigerator door appearance detection method, system and electronic equipment. Background Art

[0002] At present, with the development of society and changes in market demand, the refrigerator industry is gradually approaching large-scale personalized customization. The increasingly complex product diversity has led to more and more cases of assembly errors, unqualified assembly, and appearance defects in multiple models and multiple door bodies during the production process of refrigerators, and the quality inspection requirements in the production process are getting higher and higher; at the same time, the diversity of products and the increase in production capacity have led to an increase in labor, and the increase in refrigerator product costs is also a serious problem; in addition, customer complaints caused by unqualified refrigerators entering the market due to problems with the installation and appearance of refrigerator doors also need to be traced simultaneously. Market changes will place increasingly stringent requirements on the quality and cost of refrigerators, and reducing costs and improving quality inspections in the refrigerator production process have become crucial development directions.

[0003] In the existing technology, most of the size detection and appearance color difference detection and identification are carried out manually, which mainly has the following defects:

[0004] First, the refrigerator mixed production line has many door models and difficult color identification. The manual assembly accuracy is not high during the production process, resulting in poor refrigerator door detection accuracy;

[0005] Second, the door styles and structures of different product models vary greatly, resulting in a low manual detection rate;

[0006] Third, the inspection data are recorded and counted manually, and rework and recoding result in distortion of the inspection data, which is impossible to trace or can be traced back incorrectly. Summary of the invention

[0007] The object of the present invention is to provide a method, system and electronic equipment for detecting the appearance of a refrigerator door, so as to solve the problem of poor effect of manual door detection in the prior art.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] A method for detecting the appearance of a refrigerator door, comprising the following steps:

[0010] S1. Placing the refrigerator to be inspected on the conveyor production line and transporting it to the acceleration zone set on the conveyor production line;

[0011] S2. The refrigerator enters the starting position of the acceleration zone and scans the code. The terminal identifies the SN information of the refrigerator to be detected and sends it to the edge end. The edge end retrieves the preset door body detection standard information of the refrigerator to be detected stored in the cloud;

[0012] S3, the refrigerator to be inspected is corrected front and back, left and right, and positioned and grasped by an auxiliary positioning detection mechanism arranged at one side of the acceleration zone. At this time, the conveyor production line does not stop running, and multiple cameras arranged on the auxiliary positioning detection mechanism obtain detection image information of the refrigerator to be inspected and send it to the edge end;

[0013] S4. The edge end calculates and generates detection output information of the refrigerator to be detected based on the detection image information, analyzes and compares the detection output information with the preset door body detection standard information to see whether it is within a qualified error range, and outputs the detection result;

[0014] S5. The output detection result is sent to the cloud, and the refrigerator to be detected is released from the positioning and grasping by the auxiliary positioning detection mechanism, so that the refrigerator to be detected is moved out of the acceleration zone, so as to cycle and perform appearance inspection on the next refrigerator to be detected.

[0015] As a further solution of the present invention: the acceleration zone arranged on the conveying production line in step S1 includes a refrigerator acceleration zone and a refrigerator inspection zone, the conveying length of the refrigerator acceleration zone is 3.5m, the conveying time is 14s, and the conveying line speed is 0.25m / s, the conveying length of the refrigerator inspection zone is 2.5m, the conveying time is 10s, and the conveying line speed is 0.25m / s; wherein, the line speed of the conveying production line normally transmitting the refrigerator to be inspected is 0.085m / s.

[0016] As a further solution of the present invention: the preset door body inspection standard information in step S2 is the color, assembly spacing, longitudinal axis and vertical axial flatness inspection standard data of the refrigerator door body to be inspected in the digital process and digital quality platform corresponding to the order.

[0017] As a further solution of the present invention: the method of setting an auxiliary positioning detection mechanism on one side of the acceleration zone in step S3 is: the auxiliary positioning detection mechanism includes a mobile device one and a mobile device two, the mobile device one is set on a frame, and the mobile device one is arranged along the width direction of the conveyor production line, the mobile device one is driven to connect to the mobile device two, the mobile device two is arranged along the length transmission direction of the conveyor production line, the mobile device two is driven to connect to two clamping plate frames, and a buffer block is provided on the clamping plate frame.

[0018] As a further scheme of the present invention: in step S3, the method of correcting the front, back, left, and right sides of the refrigerator clamp to be inspected by the auxiliary positioning detection mechanism and performing positioning and grasping is as follows: according to the retrieved preset door body detection standard information, the mobile device 2 adjusts the gap between the two clamping plate racks to adapt to the clamping and grasping distance of the refrigerator to be inspected; the arrival information of the refrigerator to be inspected transmitted to the refrigerator detection area is obtained by the proximity sensor 1 arranged at the end of the clamping plate rack, and the mobile device 1 drives the mobile device 2 as a whole to quickly approach the refrigerator to be inspected, and pushes it between the two clamping plate racks by the pushing mechanism on the back side of the refrigerator to be inspected, until the front side of the refrigerator to be inspected is restricted by the limit blocks arranged on the clamping plate racks, thereby completing the front, back, left, and right side correction and positioning and grasping of the refrigerator clamp to be inspected.

[0019] As a further solution of the present invention: a second proximity sensor is provided at the middle position of the clamping plate rack, and the second proximity sensor is used to obtain information on whether the refrigerator to be inspected enters between the two clamping plate racks for positioning and grasping, and feeds back the information to the edge end.

[0020] As a further solution of the present invention: the detection output information in step S4 is calculated and generated real-time data on the color, assembly spacing, longitudinal axis and vertical axial flatness inspection of the refrigerator door to be inspected.

[0021] As a further solution of the present invention: when the output test result in step S5 is sent to the cloud, the MES system in the cloud determines whether to replace the refrigerator barcode. If the refrigerator barcode needs to be replaced, the replaced refrigerator barcode is bound to the old barcode so that the refrigerator barcode can be traced and queried to output its quality inspection data.

[0022] A refrigerator door appearance detection system, comprising:

[0023] A conveying production line is used to convey the refrigerator to be inspected to the acceleration area at a variable speed;

[0024] An identification module is used for the terminal to identify the product information of the refrigerator to be detected that enters the acceleration zone, and send it to the edge end. According to the identification of the product information of the refrigerator to be detected, the edge end retrieves the preset door body detection standard information of the refrigerator to be detected stored in the cloud;

[0025] An auxiliary positioning mechanism, used to position and grab the refrigerator to be inspected in the acceleration zone or release the positioning and grabbing;

[0026] A collection module, which is arranged on the auxiliary positioning mechanism and is used to obtain the detection image information of the refrigerator to be detected;

[0027] A control module, which is used to electrically connect the auxiliary positioning mechanism and the acquisition module at the edge end, and calculate and generate the detection output information of the refrigerator to be detected according to the detection image information, and analyze and compare the detection output information with the preset door body detection standard information to see whether they are within the qualified error range, and output the detection result;

[0028] Among them, the detection image information acquired by the acquisition module and the detection results output by the control module are respectively sent to the cloud for station control.

[0029] An electronic device includes: a memory and a processor, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the above-mentioned method for detecting the appearance of a refrigerator door is implemented.

[0030] Beneficial effects of the present invention:

[0031] (1) By scanning the QR code, the cloud-based digital process and quality platform can be used to access the standard data on door color, size, door installation spacing, longitudinal and vertical axis flatness. The edge end can capture the door through door positioning to achieve fixed-position image acquisition, calculate the real-time data of the door installation, and compare it with the standard value. In this way, cloud-edge collaboration, image recognition, and other methods can be used to detect whether the door appearance is qualified.

[0032] (2) Through the design of auxiliary positioning detection mechanism and the auxiliary positioning of door size shooting position by deep calculation, the camera of the camera and the refrigerator can be relatively fixed, the shooting position can be accurately located, the accuracy and stability of the collected image data can be guaranteed, the appearance inspection difficulty of products with different door structures can be realized, and the door appearance inspection efficiency can be improved;

[0033] (3) By designing an acceleration zone when transmitting to the conveying production line, the refrigerator to be inspected can be accelerated to the inspection position, and the auxiliary positioning detection mechanism can be used for positioning detection. The auxiliary positioning detection mechanism can be synchronized with the refrigerator to be inspected and the conveying production line, thereby breaking through the problem of traditional static detection, so that the present application can realize automatic detection of the door appearance without affecting the production rhythm, solving the problem of low efficiency of manual detection, and helping to improve the efficiency of door appearance detection;

[0034] (4) The quality data of the product appearance can be accurately obtained by taking photos of the product appearance and performing data analysis and calculation. The data can be stored in the system database and bound to the product SN information. The test data can be uploaded to the cloud for cross-station control. In the subsequent quality traceability process, the appearance quality data of the corresponding product can be queried in the system through the SN to solve the problem of inaccurate quality traceability. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] Figure 1 is a flow chart of the present invention;

[0037] Figure 2 It is a schematic diagram of the layout state of the conveying production line, the acceleration zone and the auxiliary positioning detection structure of the present invention;

[0038] Figure 3 It is a structural schematic diagram of the auxiliary positioning detection mechanism of the present invention.

[0039] In the figure: 1. conveying production line; 2. acceleration zone; 3. auxiliary positioning detection mechanism; 30. frame; 31. moving device 1; 32. moving device 2; 33. clamping plate frame; 34. buffer block; 35. limit block; 36. proximity sensor 1; 37. proximity sensor 2. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in the description of the present invention, the meaning of "multiple" and "several" is at least two, for example two, three, etc., unless otherwise clearly and specifically defined.

[0042] See also Figures 1 to 3 As shown, the present invention is a method for detecting the appearance of a refrigerator door, comprising the following steps:

[0043] S1. Place the refrigerator to be inspected on the conveyor production line 1 and transfer it to the acceleration zone 2 provided on the conveyor production line 1.

[0044] In this step, the acceleration zone 2 set on the conveyor production line 1 includes a refrigerator acceleration zone and a refrigerator detection zone. The conveying length of the refrigerator acceleration zone is 3.5m, the conveying time is 14s, and the conveying line speed is 0.25m / s. The conveying length of the refrigerator detection zone is 2.5m, the conveying time is 10s, and the conveying line speed is 0.25m / s; wherein, the conveyor production line 1 normally conveys the refrigerator to be detected at a line speed of 0.085m / s; during the transmission process of the refrigerator to be detected on the conveyor production line 1, according to the fastest production beat of the refrigerator to be detected of 10s and the width of 0.85m, it can be known that the refrigerator runs at a speed of 0.085m / s, and the refrigerator to be detected is The normal operating speed enters the acceleration zone 2, and accelerates at a distance of 3.5 in the acceleration zone to reach the detection position of 2.5m in the detection zone. In step S3, positioning detection is performed through the auxiliary positioning detection mechanism 3, which can realize the synchronous operation of the auxiliary positioning detection mechanism 3 and the refrigerator to be detected and the conveyor production line 1. Due to the time difference between the front and rear running speeds and distances of the refrigerator, a rhythm buffer can be achieved between the refrigerator detection and the conveyor production line 1, breaking through the problem of traditional static detection, so that the present application can realize automatic detection of the door body appearance without affecting the production rhythm, solving the problem of low efficiency of manual detection, and helping to improve the efficiency of door body appearance detection.

[0045] Specifically, during the transmission of multiple refrigerators to be inspected on the conveyor production line 1, it is necessary to pre-determine whether the previous refrigerator in the acceleration zone 2 has completed the inspection. If the inspection of the previous refrigerator has been completed, execute step S2; if the inspection of the previous refrigerator has not been completed, the accelerated conveyor production line 1 is controlled to stop and wait for the inspection to be completed. After completion, execute step S2.

[0046] S2. The refrigerator enters the starting position of acceleration zone 2 and scans the code. The terminal identifies the SN information of the refrigerator to be inspected and sends it to the edge end. The edge end retrieves the preset door body inspection standard information of the refrigerator to be inspected stored in the cloud; the preset door body inspection standard information is the color, assembly spacing, longitudinal axis and vertical axial flatness inspection standard data of the refrigerator door to be inspected in the digital process and digital quality platform corresponding to the order; when the refrigerator is transmitted to acceleration zone 2 in this step, a product information identification barcode is affixed to the side of the refrigerator to be inspected, and the existing scanning equipment can be used to identify and obtain the type of the refrigerator to be inspected; so as to quickly identify the information of the door bodies of different product models, so as to facilitate subsequent detection and comparison.

[0047] S3. The refrigerator to be inspected is corrected front and back, left and right, and positioned and grasped through the auxiliary positioning detection mechanism 3 set on one side of the acceleration zone 2. At this time, the conveyor production line 1 does not stop running, and the multiple cameras set on the auxiliary positioning detection mechanism 3 obtain the detection image information of the refrigerator to be inspected and send it to the edge end.

[0048] In this step, the method of setting an auxiliary positioning detection mechanism 3 on one side of the acceleration zone 2 is as follows: the auxiliary positioning detection mechanism 3 includes a moving device 1 31 and a moving device 2 32, the moving device 1 31 is set on the frame 30, and the moving device 1 31 is arranged along the width direction of the conveying production line 1, the moving device 2 32 is driven and connected on the moving device 1 31, the moving device 2 32 is arranged along the length transmission direction of the conveying production line 1, the moving device 2 32 is driven and connected to two clamping racks 33, and a buffer block 34 is provided on the clamping rack 33; the moving device 1 31 and the moving device 2 32 in the auxiliary positioning detection mechanism 3 can both be screw thread transmission components, and cooperate with the guide rail slider to limit the movement to realize the process of the moving action, the moving device 1 31 and the moving device 2 32 are common operating components in the prior art, and this application will not elaborate on them in detail.

[0049] In this step, the auxiliary positioning detection mechanism 3 is used to correct the clamp of the refrigerator to be detected for the front and back, left and right, and the method for positioning and grasping is as follows: according to the retrieved preset door body detection standard information, the mobile device 2 32 adjusts the gap between the two clamping plate frames 33 to adapt to the clamping and grasping distance of the refrigerator to be detected; the proximity sensor 1 36 set at the end of the clamping plate frame 33 obtains the arrival information of the refrigerator to be detected transmitted to the refrigerator detection area, and drives the mobile device 2 32 as a whole to quickly approach the refrigerator to be detected through the mobile device 1 31, and pushes it between the two clamping plate frames 33 through the pushing mechanism on the back side of the refrigerator to be detected, until the front side of the refrigerator to be detected is restricted by the limit block 35 set on the clamping plate frame 33, and the front and back, left and right correction and positioning and grasping of the clamp of the refrigerator to be detected are completed; the pushing mechanism in this step can be a cylinder pushing component to complete the auxiliary positioning detection mechanism 3 to correct the refrigerator to be detected for the front and back, left and right, and position and grasp it. The pushing mechanism is a common operating component in the prior art and is not elaborated in detail in this application.

[0050] Specifically, a proximity sensor 2 37 is provided in the middle position of the clamp rack 33. The proximity sensor 2 37 is used to obtain information on whether the refrigerator to be inspected enters between the two clamp racks 33 for positioning and grasping, and feeds back to the edge end; the proximity sensor 2 37 can be used to determine whether the previous refrigerator in the acceleration zone 2 has completed the inspection.

[0051] During the implementation of this step, the auxiliary positioning detection mechanism 3 can be designed, and the door size shooting position can be assisted by depth calculation. The camera of the camera and the refrigerator can be relatively fixed, the shooting position can be accurately located, the accuracy and stability of the collected image data can be guaranteed, the difficulty of appearance inspection of products with different door structures can be achieved, and the efficiency of door appearance inspection can be improved.

[0052] S4. Based on the detection image information, the edge end calculates and generates the detection output information of the refrigerator to be inspected, analyzes and compares the detection output information with the preset door body detection standard information to see whether it is within the qualified error range, and outputs the detection result; the detection output information is the calculated and generated real-time data on the color, assembly spacing, longitudinal axis and vertical axial flatness inspection of the refrigerator door to be inspected.

[0053] Specifically, during the assembly spacing detection process of the refrigerator door to be inspected, a photo can be taken of the refrigerator door 10 cm away from the port. Multiple cameras can take a photo of the top and bottom and left and right to calculate the upper door spacing A1 and the lower door spacing A2. The door spacing difference A3 = |A1-A2| is calculated. The door spacing difference A3 is the real-time data of assembly spacing inspection generated by calculation, and the door spacing standard value A is the standard data of assembly spacing inspection. When A3≤A, it indicates that the door product to be inspected is qualified, otherwise it is unqualified.

[0054] Specifically, during the inspection of the assembly spacing of the refrigerator door to be inspected, a photo can be taken of the top vertex of the refrigerator, the photo includes the tops of the two doors, and the horizontal and vertical distances between the two fixed points are calculated as the door vertical axis value B1. If the door vertical axis value B1 ≤ the door vertical axis standard value B, the product is qualified, otherwise the product is unqualified;

[0055] Specifically, during the inspection process of the assembly spacing of the refrigerator door to be inspected, the refrigerator is looked down from top to bottom or the side of the refrigerator is photographed from left to right or from right to left, and the distance between the convex door and the concave door is calculated as the door longitudinal axis value C1. If the door longitudinal axis value C1 ≤ the door longitudinal axis standard value C, the product is qualified, otherwise it is unqualified, thereby solving the problems of door assembly errors, large assembly size differences and high inspection difficulties.

[0056] Specifically, during the inspection process of the assembly spacing of the refrigerator door to be inspected, each door of the refrigerator can be photographed to calculate the color difference △E1, △E2...△En of each door; the color difference △E01, △E02...△E0n between each door and the standard color plate is calculated. If △En or △E0n≤△E, the product is qualified, otherwise it is unqualified.

[0057] To summarize, this application calls the cloud-based digital process and quality platform's door color, size, door installation spacing, longitudinal and vertical axis flatness standard data by scanning the code, and realizes fixed-position image acquisition through door positioning and capture at the edge, calculates the real-time data of the door's physical installation, and compares it with the standard value, so that whether the door's appearance is qualified can be detected through cloud-edge collaboration, image recognition and other methods.

[0058] S5. The output detection result is sent to the cloud, and the refrigerator to be detected is released from the positioning and grasping through the auxiliary positioning detection mechanism 3, so that the refrigerator to be detected is moved out of the acceleration zone 2, so as to cycle and perform appearance inspection on the next refrigerator to be detected.

[0059] When the output test results in this step are sent to the cloud, the MES system in the cloud determines whether to replace the refrigerator barcode. If the refrigerator barcode needs to be replaced, the replaced refrigerator barcode will be bound to the old barcode so that the refrigerator barcode can be traced and queried to output its quality inspection data; according to the output test results, it is stored in the refrigerator barcode information so that cross-station control can be carried out. For subsequent market customer complaints caused by quality door problems, the quality inspection data can be queried and output through the refrigerator barcode to solve the problem of inaccurate manual traceability.

[0060] The present invention also provides a system for inspecting the appearance of a refrigerator door, comprising a conveying production line 1, an identification module, an auxiliary positioning mechanism and a control module. The conveying production line 1 is used to convey the refrigerator to be inspected to an acceleration zone 2 at a variable speed. The identification module is used for terminal identification of product information of the refrigerator to be inspected entering the acceleration zone 2, and sending it to an edge end. Based on the identification of the product information of the refrigerator to be inspected, the edge end retrieves preset door inspection standard information of the refrigerator to be inspected stored in the cloud. The auxiliary positioning mechanism is used to locate and grasp or release the positioning and grasping of the refrigerator to be inspected at the acceleration zone 2. The acquisition module is arranged on the auxiliary positioning mechanism and is used to obtain inspection image information of the refrigerator to be inspected. The control module is used to electrically connect the auxiliary positioning mechanism and the acquisition module at the edge end. Based on the inspection image information, the control module calculates and generates inspection output information of the refrigerator to be inspected, analyzes and compares whether the inspection output information is within a qualified error range with the preset door inspection standard information, and outputs the inspection result.

[0061] Among them, the detection image information obtained by the acquisition module and the detection results output by the control module are sent to the cloud for station control.

[0062] The appearance inspection system using the present application can call the cloud-based digital process and quality platform's door color, size, door installation spacing, longitudinal and vertical axis flatness standard data by scanning the code, and realize fixed-position image acquisition through door body positioning and capture at the edge, calculate the real-time data of the physical installation of the door body, and compare it with the standard value, so as to detect whether the door appearance is qualified through cloud-edge collaboration, image recognition and other methods.

[0063] The present invention also provides an electronic device, including: a memory and a processor, the memory stores computer-readable instructions, and the computer-readable instructions are executed by the processor to implement the above-mentioned method for detecting the appearance of a refrigerator door; the computer electronic device can be broadly a server, a terminal, or any other electronic device with necessary computing and / or processing capabilities. In one embodiment, the computer device may include a processor, a memory, a network interface, a communication interface, etc. connected through a system bus. The processor of the computer device can be used to provide necessary computing, processing and / or control capabilities. The memory of the computer device may include a non-volatile storage medium and an internal memory. An operating system, a computer program, etc. may be stored in or on the non-volatile storage medium. The internal memory can provide an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface and the communication interface of the computer device can be used to connect and communicate with external devices through a network. When the computer program is executed by the processor, the steps of the method of the present invention are executed.

[0064] The present invention may be implemented as a computer-readable storage medium having a computer program stored thereon, which causes the steps of the method of an embodiment of the present invention to be executed when executed by a processor. In one embodiment, the computer program is distributed on a plurality of computer devices or processors coupled to a network so that the computer program is stored, accessed and executed in a distributed manner by one or more computer devices or processors. A single method step / operation, or two or more method steps / operations, may be performed by a single computer device or processor or by two or more computer devices or processors. One or more method steps / operations may be performed by one or more computer devices or processors, and one or more other method steps / operations may be performed by one or more other computer devices or processors. One or more computer devices or processors may perform a single method step / operation, or perform two or more method steps / operations.

[0065] It should be understood that the method steps of the present invention can be performed by instructing related hardware such as a computer device or a processor through a computer program, and the computer program can be stored in a non-temporary computer-readable storage medium, and the steps of the present invention are performed when the computer program is executed. Depending on the circumstances, any reference to memory, storage, database or other media herein may include non-volatile and / or volatile memory. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid state disk, etc. Examples of volatile memory include random access memory (RAM), external cache memory, etc.

[0066] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for detecting the appearance of a refrigerator door, characterized in that: The following steps are involved: S1, placing a refrigerator to be inspected on a conveyor production line (1), and transporting it to an acceleration zone (2) provided on the conveyor production line (1); S2, the refrigerator enters the starting position of the acceleration zone (2) and scans the code, the terminal identifies the SN information of the refrigerator to be detected, and sends it to the edge end, and the edge end retrieves the preset door body detection standard information of the refrigerator to be detected stored in the cloud; S3, the auxiliary positioning detection mechanism (3) arranged on one side of the acceleration zone (2) is used to calibrate the refrigerator to be inspected in front, back, left, and right directions, and to locate and grasp the refrigerator. At this time, the conveyor production line (1) does not stop running, and a plurality of cameras arranged on the auxiliary positioning detection mechanism (3) obtain detection image information of the refrigerator to be inspected and send it to the edge end; S4. The edge end calculates and generates detection output information of the refrigerator to be detected based on the detection image information, analyzes and compares the detection output information with the preset door body detection standard information to see whether it is within a qualified error range, and outputs the detection result; S5, sending the output detection result to the cloud, and releasing the positioning and grasping of the refrigerator to be detected by the auxiliary positioning detection mechanism (3), so that the refrigerator to be detected is moved out of the acceleration zone (2), thereby cyclically performing the appearance inspection of the next refrigerator to be detected.

2. A method for detecting the appearance of a refrigerator door according to claim 1, characterized in that: The acceleration zone (2) arranged on the conveying production line (1) in step S1 includes a refrigerator acceleration zone and a refrigerator detection zone. The conveying length of the refrigerator acceleration zone is 3.5 m, the conveying time is 14 s, and the conveying line speed is 0.25 m / s. The conveying length of the refrigerator detection zone is 2.5 m, the conveying time is 10 s, and the conveying line speed is 0.25 m / s. The line speed of the conveying production line (1) normally conveying the refrigerator to be detected is 0.085 m / s.

3. A method for detecting the appearance of a refrigerator door according to claim 2, characterized in that: The preset door inspection standard information in step S2 is the color, assembly spacing, longitudinal axis and vertical axial flatness inspection standard data of the refrigerator door to be inspected in the digital process and digital quality platform corresponding to the order.

4. A method for detecting the appearance of a refrigerator door according to claim 3, characterized in that: In step S3, the method of setting an auxiliary positioning detection mechanism (3) on one side of the acceleration zone (2) is as follows: the auxiliary positioning detection mechanism (3) includes a moving device one (31) and a moving device two (32), the moving device one (31) is set on a frame (30), and the moving device one (31) is arranged along the width direction of the conveying production line (1), the moving device one (31) is driven to connect to the moving device two (32), the moving device two (32) is arranged along the length transmission direction of the conveying production line (1), the moving device two (32) is driven to connect to two clamping frames (33), and a buffer block (34) is provided on the clamping frame (33).

5. A method for detecting the appearance of a refrigerator door according to claim 4, characterized in that: In step S3, the method for correcting the front, back, left, and right directions of the refrigerator clamp to be detected by the auxiliary positioning detection mechanism (3) and performing positioning and grasping is as follows: according to the retrieved preset door body detection standard information, the second moving device (32) adjusts the gap between the two clamping plates (33) to adapt to the clamping and grasping distance of the refrigerator to be detected; the arrival information of the refrigerator to be detected transmitted to the refrigerator detection area is obtained by the proximity sensor one (36) arranged at the end of the clamping plate frame (33), and the second moving device (32) is driven by the first moving device (31) to quickly approach the refrigerator to be detected as a whole, and is pushed into between the two clamping plates (33) by the pushing mechanism on the back side of the refrigerator to be detected, until the front side of the refrigerator to be detected is restricted by the limit block (35) arranged on the clamping plate frame (33), thereby completing the front, back, left, and right directions correction and positioning and grasping of the refrigerator clamp to be detected.

6. A method for detecting the appearance of a refrigerator door according to claim 5, characterized in that: A second proximity sensor (37) is provided at the middle of the clamping plate rack (33), and the second proximity sensor (37) is used to obtain information on whether the refrigerator to be detected enters between the two clamping plate racks (33) for positioning and grasping, and feeds back information to the edge end.

7. A method for detecting the appearance of a refrigerator door according to claim 1, characterized in that: The detection output information in step S4 is calculated and generated real-time data on the color, assembly spacing, longitudinal axis and vertical axial flatness inspection of the refrigerator door to be inspected.

8. The method for detecting the appearance of a refrigerator door according to claim 1, characterized in that: When the output test result in step S5 is sent to the cloud, the MES system in the cloud determines whether to replace the refrigerator barcode. If the refrigerator barcode needs to be replaced, the replaced refrigerator barcode is bound to the old barcode so that the refrigerator barcode can be traced and queried to output its quality inspection data.

9. A refrigerator door appearance inspection system, characterized in that: include: A conveying production line (1) is used to convey the refrigerator to be inspected to an acceleration zone (2) at a variable speed; An identification module, used for the terminal to identify the product information of the refrigerator to be detected that enters the acceleration zone (2), and send it to the edge end, and according to the identification of the product information of the refrigerator to be detected, the edge end retrieves the preset door body detection standard information of the refrigerator to be detected stored in the cloud; An auxiliary positioning mechanism, used to position and grasp the refrigerator to be inspected at the acceleration zone (2) or release the positioning and grasping; A collection module, which is arranged on the auxiliary positioning mechanism and is used to obtain detection image information of the refrigerator to be detected; A control module, which is used to electrically connect the auxiliary positioning mechanism and the acquisition module at the edge end, and calculate and generate the detection output information of the refrigerator to be detected according to the detection image information, and analyze and compare the detection output information with the preset door body detection standard information to see whether they are within the qualified error range, and output the detection result; Among them, the detection image information acquired by the acquisition module and the detection results output by the control module are respectively sent to the cloud for station control.

10. An electronic device, characterized in that: include: A memory and a processor, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the method for detecting the appearance of a refrigerator door according to any one of claims 1 to 8 is implemented.

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