CN212059249U - Quick leak detection system for welding spots of refrigeration household appliance compressor - Google Patents
Quick leak detection system for welding spots of refrigeration household appliance compressor Download PDFInfo
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Abstract
Quick leak hunting system of refrigeration household electrical appliances compressor solder joint includes: the image acquisition component is used for acquiring image information of a welding spot area of the compressor; the information processing component is connected with the image acquisition component and used for processing the image information and determining the coordinates of the welding points based on the image information; the leakage detecting gun is used for sampling at a welding spot; the leak detector is connected with the leak detection gun and used for analyzing a sample collected by the leak detection gun; the robot is used for installing the leakage detecting gun and driving the leakage detecting gun to move; and the robot control component is arranged and respectively connected with the information processing component and the robot and used for controlling the movement of the robot and moving the leak detection gun to a leak detection position. The system has simple composition, quick measurement and accurate result, meets the requirements of the refrigeration household appliance production line on the time and accuracy of the leakage detection of the welding spot of the compressor, has positive promotion effect on improving the intelligent production of the refrigeration household appliance, and has good application prospect.
Description
Technical Field
The application belongs to the technical field of industrial automatic measurement, and particularly relates to a welding spot quick leakage detection system for a refrigeration household appliance compressor.
Background
The existing refrigeration appliances usually employ a compressor to cool, such as a refrigerator, an air conditioner, a freezer, etc. For example, the compressor of an electric refrigeration appliance generally has pipelines such as a process pipe, an air suction pipe, an air exhaust pipe and the like extending to the outside, and the pipelines are generally connected with other pipelines in a welding manner, so that if a welding part has a flaw, leakage of a condensing agent gas is caused, the working efficiency of the compressor is influenced, and environmental pollution and other potential safety hazards are caused.
Generally, the outlet positions of the refrigeration appliance compressor pipelines of the same specification and model are basically consistent, while the outlet positions of the refrigeration appliance compressor pipelines of different specifications and models are different. And the pipeline position that mutually welds on the compressor is all different, overlaps each other between some pipelines, shelters from each other, and the pipeline that shelters from each other makes the location degree of difficulty of solder joint big, and the location is inaccurate, can't discern the solder joint that is sheltered from even, leads to taking place to leak to examine, and detection efficiency is not high, and the detection accuracy remains to be improved.
Therefore, in the production process of the refrigeration household appliance, the welding position of the compressor is accurately positioned, and the rapid and efficient air leakage detection is carried out, so that the control of improving the production quality of the refrigeration household appliance is particularly important.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one of the technical problems existing in the prior art mentioned above, an embodiment of the present application discloses a system for rapidly detecting a leak of a welding spot of a compressor of a refrigeration appliance, which includes:
the image acquisition component is used for acquiring image information of a welding spot area of the compressor;
the information processing component is connected with the image acquisition component and used for processing the image information and determining the coordinates of the welding points based on the image information;
the leakage detecting gun is used for sampling at a welding spot;
the leak detector is connected with the leak detection gun and used for analyzing a sample collected by the leak detection gun;
the robot is used for installing the leakage detecting gun and driving the leakage detecting gun to move;
and the robot control component is arranged and respectively connected with the information processing component and the robot and used for controlling the movement of the robot and moving the leak detection gun to a leak detection position.
Some embodiments disclose a system for rapid leak detection of a welding spot of a refrigeration appliance compressor, wherein an image acquisition assembly comprises a single fixed camera.
Some embodiments disclose a system for rapidly detecting a welding spot of a refrigeration household appliance compressor, wherein an image acquisition assembly comprises a passive double camera.
Some embodiments disclose a system for rapidly detecting a solder joint leak of a refrigeration appliance compressor, wherein an image acquisition assembly comprises active double cameras.
In some embodiments, the disclosed welding spot quick leak detection system for the refrigeration appliance compressor is a multi-axis cooperative robot.
Some embodiments disclose a refrigeration household electrical appliances compressor solder joint quick leak hunting system, leak hunting rifle is provided with elasticity protection device.
Some embodiments disclose a quick leak detection system for a welding spot of a refrigeration household appliance compressor, and the leak detection system further comprises an audible and visual alarm component.
Some embodiments disclose a refrigeration appliance compressor solder joint rapid leak detection system, which further comprises a fixed light source for providing a light source for a compressor solder joint area.
Some embodiments disclose a refrigeration household appliance compressor welding spot rapid leakage detection system, which further comprises a blowing component for blowing air to the compressor welding spot area.
Some embodiments disclose a refrigeration household electrical appliances compressor solder joint quick leak detection system, this leak detection system still includes:
the code scanning gun is used for scanning the model information of the refrigeration household appliance compressor;
and the lateral positioning mechanism is used for adjusting the transverse position of the refrigeration appliance on the production line.
According to the rapid leakage detecting system for the welding spot of the refrigeration household appliance compressor, the image obtaining assembly can rapidly obtain image information of the welding spot area of the compressor, the information processing assembly can determine the welding spot and coordinate information of the welding spot according to the image information and can determine the coordinate of the detection position of the leakage detecting gun, then the robot moves the leakage detecting gun to the detection position to sample, and the leakage detector can accurately judge whether leakage exists in the welding spot. The quick leak detection system for the welding spot of the refrigeration household appliance compressor, disclosed by the embodiment of the application, is simple in composition, quick in measurement and accurate in result, meets the requirements of time and accuracy of the refrigeration household appliance production line on the leak detection of the welding spot of the compressor, has a positive promotion effect on improving the intelligent production of the refrigeration household appliance, and is good in application prospect.
Drawings
FIG. 1 is a schematic diagram of a coordinate measuring device for measuring a target to be measured by two cameras;
FIG. 2 is a schematic diagram of a welding spot quick leak detection system of a refrigeration appliance compressor in embodiment 1;
fig. 3 is a schematic diagram of a welding spot quick leak detection system of a refrigeration appliance compressor in embodiment 2.
Detailed Description
The word "embodiment" as used herein, is not necessarily to be construed as preferred or advantageous over other embodiments, including any embodiment illustrated as "exemplary". Performance index tests in the examples of this application, unless otherwise indicated, were performed using routine experimentation in the art. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; other test methods and techniques not specifically mentioned in the present application are those commonly employed by those of ordinary skill in the art.
The terms "substantially" and "about" are used throughout this disclosure to describe small fluctuations. For example, they may mean less than or equal to ± 5%, such as less than or equal to ± 2%, such as less than or equal to ± 1%, such as less than or equal to ± 0.5%, such as less than or equal to ± 0.2%, such as less than or equal to ± 0.1%, such as less than or equal to ± 0.05%. Concentrations, amounts, and other numerical data may be expressed or presented herein in a range format. Such range format is used merely for convenience and brevity and thus should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. For example, a numerical range of "1 to 5%" should be interpreted to include not only the explicitly recited values of 1% to 5%, but also include individual values and sub-ranges within the indicated range. Thus, included in this numerical range are individual values, such as 2%, 3.5%, and 4%, and sub-ranges, such as 1% to 3%, 2% to 4%, and 3% to 5%, etc. This principle applies equally to ranges reciting only one numerical value. Moreover, such an interpretation applies regardless of the breadth of the range or the characteristics being described. The welding spot image information mentioned in the present application generally refers to image information at least including the welding position of the compressor pipeline.
In this disclosure, including the claims, all conjunctions such as "comprising," including, "" carrying, "" having, "" containing, "" involving, "" containing, "and the like are to be understood as being open-ended, i.e., to mean" including but not limited to. Only the conjunctions "consisting of … …" and "consisting of … …" are closed conjunctions.
In the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In the examples, some methods, means, instruments, apparatuses, etc. known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application. On the premise of no conflict, the technical features disclosed in the embodiments of the present application may be combined arbitrarily, and the obtained technical solution belongs to the content disclosed in the embodiments of the present application.
In some embodiments, the system for rapidly detecting a welding spot of a refrigeration appliance compressor comprises: the image acquisition component is used for acquiring image information of a welding spot area of the compressor; the information processing component is connected with the image acquisition component and used for processing the image information and determining the coordinates of the welding points based on the image information; the leakage detecting gun is used for sampling at a welding spot; the leak detector is connected with the leak detection gun and used for analyzing a sample collected by the leak detection gun; the robot is used for installing the leakage detecting gun and driving the leakage detecting gun to move; and the robot control component is arranged and respectively connected with the information processing component and the robot and used for controlling the movement of the robot and moving the leak detection gun to a leak detection sampling position.
The information processing assembly disclosed by the embodiment of the application obtains the welding spot and the position coordinate information thereof contained in the image information through the analysis and the processing of the welding spot image information, further determines the position coordinate information of the sampling of the leakage detecting gun, and utilizes a robot to move the leakage detecting gun to the position for sampling so as to obtain the air sample near the welding spot; the leak detector analyzes the air sample to determine if there is a cooling gas leak in the compressor. Further, if the measured data is analyzed to determine that gas leakage exists, an audible and visual alarm can be sent out, or other related operations can be carried out.
Generally, an image acquisition component of a welding spot quick leak detection system of a refrigeration household appliance compressor comprises a camera, and is used for acquiring image information of an object to be detected. As an alternative embodiment, the image acquisition assembly comprises a single stationary camera. As an alternative embodiment, a Haokawave high definition fixed focal length camera may be selected, for example, a HF3417D-12MPIR Haokawave 1200 ten thousand pixel 3.4mm fixed focal length lens.
As an optional implementation manner, if a single camera is set as the image acquisition component, the camera needs to be set at a relatively fixed position, so that a relatively reasonable distance is kept between the camera and the refrigeration appliance on the production line, and it is ensured that the welding spot pattern of the compressor of the refrigeration appliance acquired by the camera has appropriate accuracy, and the judgment of the welding spot position and the accurate determination of the coordinates are not affected. For this purpose, the camera is usually arranged in a suitable fixed position and at a determined suitable height, enabling an image to be taken of the compressor weld spot area. The refrigeration household appliance to be detected is usually arranged on a household appliance production line, when the household appliance travels to a leakage detection working section, a compressor of the refrigeration household appliance is located in a certain height range, an image acquisition range of the image acquisition assembly also has a certain area range in the height direction, and the image acquisition assembly can be arranged at a certain fixed position according to the corresponding relation between the height range of the compressor and the image acquisition range, so that images of welding spot positions of all the compressors can be acquired.
As an alternative embodiment, the image acquisition assembly is provided on a dedicated camera stand having a suitable height and provided in a fixed position at a relatively suitable distance from the compressor to ensure that a suitable image is acquired.
Typically, machine vision systems need to be calibrated to determine the measurement accuracy of the machine vision system. As an optional implementation, the calibration of the machine vision system may be performed by using a standard measurement board, and the determination of the relative position relationship among the machine vision system coordinate system, the robot coordinate system, and the space coordinate system, the definition of the correlation, and the actual corresponding size of each pixel point in the image acquired by the image acquisition component, that is, the unique relationship between the mutual position relationship of the coordinate system and the pixel point ratio, may be achieved by the cooperation of the robot and the detection of the camera. And in subsequent actual operation work and identification, the multi-coordinate system is accurately unified to obtain a unified measurement coordinate system, so that the control operation of a subsequent detection and execution mechanism is facilitated. The quick leak detection system disclosed by the embodiment of the application is a machine vision system, and the measurement accuracy of the leak detection system can be calibrated by the method.
As an optional embodiment, the following processing is performed on an image acquired by a single camera to acquire the coordinate information of the position of the welding spot, and the processing specifically includes:
acquiring a welding spot area image, carrying out filtering processing on the image according to the area range of a target welding spot in the image to eliminate noise points, and extracting a pipeline outline according to the pipeline color;
dividing the outline into two edges, and calculating the distance from all pixel points on the edge to the other edge to obtain a width array of the whole outline;
according to the change of the width array, the position with the width being small and large, namely the position with the pipeline being narrow and wide, is the welding spot position, and vice versa;
obtaining the coordinates of the welding spot position in the image according to the above;
and (4) coordinate conversion, namely converting the coordinates of the welding spot into coordinates of the robot, and further determining the coordinates of the sampling position of the leak detection gun.
And further, the robot drives the leakage detection gun to move to a sampling position, and the welding point part is sampled and detected.
As an optional implementation mode, the image acquisition assembly of the rapid welding spot leakage detection system of the refrigeration household appliance compressor comprises two passive cameras. Generally, the image acquisition assembly comprises two cameras arranged at different positions, the two cameras are arranged at different positions in the same horizontal plane, and the two cameras simultaneously acquire image information of a welding spot area of the compressor so as to determine a welding spot and coordinates thereof in an image. For example, two Haikang 1200 ten thousand pixel cameras can be selected as the passive double cameras, a 16mm lens, an object distance of 566mm, and an effective visual field range of 400mm × 366 mm.
The passive dual cameras usually include two area/line cameras, the two cameras shoot the same position, and the height of the object can be calculated by using a disparity map.
The processing of the image information by the information processing component typically includes acquiring the number, size and position coordinates of the welding points in the image. For example, the leakage detection system comprises two cameras for simultaneously acquiring two images from two different positions, and the information processing component determines the position coordinates of the welding spot of the compressor by processing the information of the two images.
As an optional implementation mode, the passive double cameras acquire the coordinates of the welding spot area through a binocular space three-dimensional coordinate measuring method. Generally, a calibration target is arranged within the image acquisition range of two cameras, the two cameras simultaneously acquire images of the target from different angles, and then the cameras are calibrated through internal parameters of the two cameras, such as an angle of view and a position of an aperture, and external parameters, such as a distance between the two cameras and an included angle between each of the two cameras and the target, so as to establish a measurement coordinate system; then, the target to be measured is placed in the image acquisition range of the two cameras, the image of the target to be measured is acquired simultaneously, and the space coordinate of the target to be measured in the measurement coordinate system is determined. As an implementation mode, the dual cameras in the rapid leakage detection system for the welding spots of the refrigeration appliance compressor perform position measurement by the following method to determine the coordinates of a target person, and fig. 1 is a schematic diagram of the dual cameras measuring the coordinates of a target to be measured, and specifically includes:
will calibrate target O1Is arranged at the first camera C1And a second camera C2Within the image acquisition range, a first camera C1Is (X) of a first coordinate system1，Y1，Z1) Second camera C2Is (X) of a second coordinate system2，Y2，Z2) The two cameras simultaneously obtain a calibration target O from different angles1The image of (a);
through the first camera C1And a second camera C2Internal parameters of (2), e.g. angle of view, aperture position, and external parameters, e.g. first camera C1And a second camera C2The distance between the two cameras and the calibration target O is 2d1The camera is calibrated, a measuring coordinate system (X, Y, Z) is established, and the center of the measuring coordinate system is positioned at the first camera and the second cameraA center position between the centers of the coordinate systems of the image heads; wherein, the first camera C1A second camera C at a distance d from the center of the measurement coordinate system2The distance between the first camera C and the center of the measuring coordinate system is d1And a calibration target O1The included angle between the two cameras is beta, and the second camera C2And a calibration target O1The included angle between the two is alpha;
first camera C1And a second camera C2Respectively obtaining the objects O to be measured2Analyzing the obtained image to obtain the target O to be detected2Two-dimensional coordinate information in a first coordinate system and a second coordinate system;
according to the two-dimensional coordinate information and the first camera C1And a second camera C2To establish a linear equation L1And L2；
Coordinate conversion is carried out to convert the linear equation L1And L2Converting into a measurement coordinate system (X, Y, Z), calculating the space coordinate of the target to be measured, and obtaining the target to be measured O2Spatial coordinates (x ', y ', z ') in the measurement coordinate system.
Further, as an optional implementation manner, the acquired image information may be processed in an artificial intelligence manner, and the welding spot information is further processed to obtain more accurate welding spot position information, which specifically includes:
marking welding points of a large number of field photos, and then making a VOC data set of the welding points, such as a VOC2007 data set, as a deep learning data set;
selecting a proper deep learning model, putting the VOC data set into the model for training, and enabling the model to learn the characteristics of a target object to be identified, such as an optional YOLO v3 deep learning model;
after a large amount of learning training, the model can stably identify and calculate the characteristics of the welding points to be identified, and simultaneously calculate the coordinates of the welding points in the picture;
the recognition algorithm for calculating the coordinates includes:
dividing a picture into grids with a certain size, wherein the grids with different sizes have different effects on objects with different sizes;
if the center of a target falls into a grid cell, the grid cell is responsible for detecting the target;
each grid has nine regression boxes, each box requiring four values to represent its position, i.e., the x-coordinate C of the center point of the boxxY coordinate CyThe width W and the height H of the regression frame;
confidence is defined as whether there is a product of the target and the IOU value;
and the regression frame selects one with the highest score according to the inhibition of the non-maximum value, and then the coordinates of the target welding point are calculated.
As an optional implementation mode, the image acquisition assembly of the rapid welding spot leakage detection system of the refrigeration household appliance compressor comprises two active cameras. Generally, the image acquisition assembly comprises two cameras arranged at different positions, the two cameras are arranged at different positions in the same horizontal plane, and the two cameras simultaneously acquire image information of a welding spot area of the compressor so as to determine a welding spot and coordinates thereof in an image. The active double cameras adopt active laser light sources, so that the texture of a welding spot area of the compressor can be better increased, the definition of the position of a welding spot in an image is improved, and the recognition rate of the position of the welding spot and the accuracy of position coordinates can be improved. For example, a small structured light 3D camera can be selected, the object distance is 500-. The method comprises the steps of obtaining images of a welding spot area of a compressor by using active double cameras to obtain a 3d point cloud picture, then calculating all welding spots and coordinates thereof, converting the coordinates of the welding spots into position coordinates for leak detection sampling of a leak detection gun, and ensuring the accuracy of the sampling position of the leak detection gun.
As the information processing component disclosed in the embodiment of the present application, an image processing component generally used in the art, for example, an intelligent processor including an FPGA or a DSP; the device also comprises a communication component for transmitting image information and the like; the information input component is used for inputting information to control the rapid leak detection system; and the display component is used for displaying image information, coordinate information, leakage detection information and the like, and is convenient for operating and controlling the leakage detection system.
As an optional implementation mode, the robot of the rapid leakage detection system for the welding spots of the refrigeration household appliance compressor is a multi-shaft robot. Generally, a multi-axis robot can move in multiple dimensions, and the moving position can be accurately controlled. For example, a six-axis robot has six motion axes and six degrees of freedom, can realize accurate positioning in a three-dimensional space, and can accurately move a leak detection gun to a determined sampling position to perform sampling operation. Because the multi-axis robot can move in three-dimensional space at will, for example, can move at will in three directions of three-dimensional rectangular coordinate space, so, quick leak detection system can accurately sample compressors of different heights and different distances, and has good adaptability. For example, the human-machine cooperation robot UR10 can be selected, the payload is 10Kg, and the maximum working range is 1300 mm. Typically the robot control assembly includes a controller associated with the cooperating robot.
Generally, the robot is arranged and installed on a robot base, and universal wheels are further arranged below the base, so that the robot can be conveniently moved and fixed when the position is appropriate.
Generally, a connecting flange is arranged on the robot, and the leak detection gun is further arranged on the connecting flange so as to move the leak detection gun to a reasonable sampling position and facilitate operation.
As an optional implementation mode, the rapid welding spot leakage detecting system for the refrigeration household appliance compressor further comprises an audible and visual alarm component. Usually, the alarm component of the rapid leak detection system can send corresponding warning information to the gas leakage information obtained by detection, and reminds operators to adopt further confirmation and reasonable measures in time. For example, an audible and visual alarm may be provided at a position where the position is relatively obvious, and the detection result may be alarmed by the audible and visual alarm signal emitted by the audible and visual alarm.
As an optional implementation mode, the rapid leakage detection system for the welding spot of the refrigeration household appliance compressor further comprises a fixed light source which is used for providing a light source for the welding spot area of the compressor. The fixed light source is arranged, the brightness of the welding spot area of the compressor is increased, the brightness of the welding spot area can be improved, the definition of the camera for acquiring images is improved, and the position of the welding spot can be identified. The fixed light source is usually arranged at a position close to the compressor to illuminate the compressor welding spot area without affecting the acquisition of the image of the compressor welding spot area, for example, the light source can be arranged in a ring or rectangular arrangement and arranged around the compressor welding spot area.
As an alternative embodiment, the leak detection gun can be a multi-gas suction gun leak detector EcotecE 3000, and the leak detection response time is 0.8 s.
As an optional implementation mode, an elastic protection device is arranged on a leak detection gun of the rapid leak detection system for the welding spots of the refrigeration household appliance compressor. As an optional implementation manner, the leak detection gun is movably connected with the robot through a linear bearing, and a compression spring is arranged at a connection part of the linear bearing and the leak detection gun, the leak detection gun is usually installed at the front end position and is easily contacted with a sampling part when the leak detection gun moves to the sampling part, and the leak detection gun may be damaged, and the set compression spring can buffer the contact acting force to ensure that the leak detection gun is not damaged in the detection process.
Further, in some embodiments, a fan-shaped guide snap ring is provided at the front end of the leak detection gun for protecting the leak detection gun.
As an optional implementation mode, the rapid leakage detection system for the welding spot of the refrigeration appliance compressor also comprises a blowing component which is used for blowing air to the welding spot area of the compressor. If the gas leakage occurs at the detection part, the air blowing part can blow air to the area to quickly blow out the gas for diluting the leakage so as to eliminate the influence of the leakage gas on the next detection. The purge air may be a predetermined compressed air, for example, air is supplied to the gas-blowing member by an air pump, or air is supplied to the gas-blowing member by a container such as an air cylinder.
As an optional implementation mode, the system for rapidly detecting the welding spot of the refrigeration appliance compressor further comprises: the code scanning gun is used for scanning the model information of the refrigeration household appliance compressor; and the lateral positioning mechanism is used for adjusting the transverse position of the refrigeration appliance on the production line.
The code scanning gun is generally used for scanning the model information of the refrigeration appliance compressor; for example, the code scanning gun can read information of a compressor recorded by a bar code, a two-dimensional code and the like on a compressor of the refrigeration household appliance, the information read by the code scanning gun is transmitted to the information processing assembly to be processed, the read information of the compressor model and the like is matched with the information stored in the system, the model of the compressor to be detected is identified, the position area to be detected of the refrigeration household appliance is determined, the refrigeration household appliance is transmitted to a proper preset position area, it is ensured that a welding spot appears in the image acquisition area range of the image acquisition assembly, and picture information is acquired. In some embodiments, a swing-type yard scanning gun is selected.
And the lateral positioning mechanism is arranged on the other side surface of the refrigeration appliance production line and is used for moving the refrigeration appliance to be detected to a detection position. The robot and the image acquisition subassembly of leak hunting system usually set up in the same one side of refrigeration household electrical appliances assembly line, are convenient for carry out operation control, in order to further ensure that the position of refrigeration household electrical appliances remains stable, can set up a side direction positioning mechanism at the opposite side of assembly line, this side direction positioning mechanism is including the movable part that can lateral shifting, when carrying out the leak hunting to refrigeration household electrical appliances and detecting, this movable part removes to refrigeration household electrical appliances, moves the detection position of setting for refrigeration household electrical appliances.
In some embodiments, in order to improve the working efficiency of the leak detection system and improve the detection precision, a guide rod may be disposed on the production line of the refrigeration appliance, so as to guide the refrigeration appliance to be detected to rapidly and safely enter the part to be detected, and to facilitate the stable clamping of the lateral clamping mechanism to the refrigeration appliance.
In some embodiments, in order to improve the safety of the leak detection system, a protective fence may be installed around the leak detection system to effectively isolate the leak detection system from the surrounding environment, so as to improve the safety of the leak detection system, and also improve the sampling precision of the leak detection gun and the analysis precision of the leak detector.
The technical details are further illustrated in the following examples.
Example 1
Fig. 2 is a schematic view of a welding spot quick leak detection system of a refrigeration appliance compressor disclosed in embodiment 1.
In embodiment 1, a refrigerator 100 to be detected is arranged on a refrigerator production line, the refrigerator 100 is laterally arranged on the production line so that one side of a compressor of the refrigerator is arranged on the right side of the production line, one side of a panel of the refrigerator is arranged on the left side of the production line, a guide rod 7 is arranged on the production line so as to guide the refrigerator to enter a proper position of a detection area, meanwhile, a code scanning gun (not marked) is arranged to scan and obtain the type number of the refrigerator and the type number of the compressor, and the refrigerator is further moved to a proper position to be detected through a lateral positioning mechanism 6 arranged on the left side;
the image acquisition assembly is a fixed single camera 1, is arranged on the right side of the production line and is fixed on a camera support 10, an annular light source 2 is arranged around the image acquisition range of the fixed single camera 1 and at a position close to a refrigerator compressor, and the fixed single camera 1 acquires a compressor welding spot image by converting the inner area of the annular light source 2; the robot 4 is arranged at the right side of the production line, the leak detection gun 3 is arranged on the robot 4, and a control console comprising an information processing component 5 is arranged at a position near the robot 4; the safety barrier 11 is arranged outside the fixed single camera 1, the robot 4 and the console, and is safely isolated.
Example 2
Fig. 3 is a schematic view of a welding spot quick leak detection system of a refrigeration appliance compressor disclosed in embodiment 2.
In embodiment 2, the image acquisition component is passive two cameras 1, sets up on 4 upper portions of robot through flange 12, and flange 12's left side end sets up and is connected with leak detection gun 3, and annular light source 2 sets up with passive two camera 1 adaptations, for it provides the required light source of image acquisition.
According to the rapid leakage detecting system for the welding spot of the refrigeration household appliance compressor, the image obtaining assembly can rapidly obtain image information of the welding spot area of the compressor, the information processing assembly can determine the welding spot and coordinate information of the welding spot according to the image information and can determine the coordinate of the detection position of the leakage detecting gun, then the robot moves the leakage detecting gun to the detection position to sample, and the leakage detector can accurately judge whether leakage exists in the welding spot. The quick leak detection system for the welding spot of the refrigeration household appliance compressor, disclosed by the embodiment of the application, is simple in composition, quick in measurement and accurate in result, meets the requirements of time and accuracy of the refrigeration household appliance production line on the leak detection of the welding spot of the compressor, has a positive promotion effect on improving the intelligent production of the refrigeration household appliance, and is good in application prospect.
The technical solutions and the technical details disclosed in the embodiments of the present application are only examples to illustrate the concept of the present application, and do not constitute a limitation to the technical solutions of the present application, and all the inventive changes that are made to the technical details disclosed in the present application without inventive changes have the same inventive concept as the present application, and are within the protection scope of the claims of the present application.
Claims (5)
1. Quick leak hunting system of refrigeration household electrical appliances compressor solder joint, its characterized in that, this leak hunting system includes:
the image acquisition component is used for acquiring image information of a welding spot area of the compressor; the image acquisition assembly comprises a single fixed camera, a passive double camera or an active double camera;
the information processing component is connected with the image acquisition component and used for processing the image information and determining the coordinates of the welding spots based on the image information;
the leakage detecting gun is used for sampling at a welding spot;
the leak detector is connected with the leak detection gun and used for analyzing a sample collected by the leak detection gun;
the robot is used for installing the leakage detecting gun and driving the leakage detecting gun to move;
the robot control component is arranged and respectively connected with the information processing component and the robot and used for controlling the movement of the robot and moving the leak detection gun to a leak detection sampling position; and
and the sound and light alarm component.
2. The system for rapidly detecting the leakage of the welding spot of the refrigeration household appliance compressor as claimed in claim 1, wherein the robot is a multi-axis cooperative robot.
3. The system for rapidly detecting the leakage of the welding spot of the refrigeration household appliance compressor as claimed in claim 1, wherein an elastic protection device is arranged on the leakage detecting gun.
4. The system of claim 1, further comprising a fixed light source for providing a light source to a compressor spot area.
5. The system for rapid leak detection of welding spots of a refrigeration appliance compressor as claimed in claim 1, further comprising a blowing member for blowing air to the welding spot region of the compressor.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115493753A (en) * | 2022-09-20 | 2022-12-20 | 珠海格力电器股份有限公司 | Refrigeration equipment leak source detection system and refrigeration equipment production line |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115493753A (en) * | 2022-09-20 | 2022-12-20 | 珠海格力电器股份有限公司 | Refrigeration equipment leak source detection system and refrigeration equipment production line |
| CN115493753B (en) * | 2022-09-20 | 2024-08-06 | 珠海格力电器股份有限公司 | Refrigeration equipment leakage point detection system and refrigeration equipment production line |
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