CN113203751A - Detection machine - Google Patents
Detection machine Download PDFInfo
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- CN113203751A CN113203751A CN202011488435.7A CN202011488435A CN113203751A CN 113203751 A CN113203751 A CN 113203751A CN 202011488435 A CN202011488435 A CN 202011488435A CN 113203751 A CN113203751 A CN 113203751A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8854—Grading and classifying of flaws
- G01N2021/8867—Grading and classifying of flaws using sequentially two or more inspection runs, e.g. coarse and fine, or detecting then analysing
- G01N2021/887—Grading and classifying of flaws using sequentially two or more inspection runs, e.g. coarse and fine, or detecting then analysing the measurements made in two or more directions, angles, positions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N2021/95638—Inspecting patterns on the surface of objects for PCB's
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N2021/95638—Inspecting patterns on the surface of objects for PCB's
- G01N2021/95646—Soldering
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The application discloses a detection machine. The detection machine comprises a transport piece, a detection assembly and a main control unit connected with the detection assembly; the detection assembly comprises a first moving part, a second moving part and a linear array camera, wherein the first moving part is arranged above the conveying part and moves along a first direction, the second moving part is connected with the first moving part and moves along a second direction, and the linear array camera is connected with the second moving part; the conveying piece conveys the product to be detected to a preset detection position of the detection assembly; the main control unit controls the first moving part and the second moving part to drive the linear array camera to move, so that the linear array camera scans the product to be detected, and the solder paste printing state of the product to be detected is obtained. Because the linear array camera's resolution ratio is high and the scanning details appear meticulously, scan the product that awaits measuring in order to detect the solder paste printing state of the product that awaits measuring through the linear array camera, compare in the solder paste printing state of the product that awaits measuring of manual detection, can improve detection efficiency and detection precision by a wide margin to can also detect every product that awaits measuring of batch production, with the rate of defective products detected of improvement.
Description
Technical Field
The invention relates to the field of test equipment, in particular to a detection machine.
Background
In the production industry of LED light bars, the LED light bars are usually printed with solder paste firstly, the solder paste is correspondingly printed at the positions needing to be welded on the LED light bars, and then parts are placed on the LED light bars and welded, so that the solder paste printing state of the LED light bars is an important quality parameter, the better the solder paste printing state is, the better the welding quality of the subsequent LED light bars is, and the solder paste printing state of the LED light bars needs to be detected after the LED light bars are printed with the solder paste. However, in the prior art, the products to be tested (i.e. the LED light bars) produced in batches are usually subjected to spot inspection manually, so that not only the detection precision is low, but also the defective product detection rate is low.
Disclosure of Invention
The application provides a detect machine to solve prior art and lead to detecting the problem that the precision is low and bad quality inspection rate is low through the solder paste printing state of artifical detection product that awaits measuring.
In one aspect, the present application provides a detection machine, comprising: the device comprises a transport piece, a detection assembly and a main control unit connected with the detection assembly;
the detection assembly comprises a first moving part, a second moving part and a linear array camera, wherein the first moving part is arranged above the transport part and moves along a first direction, the second moving part is connected with the first moving part and moves along a second direction, and the linear array camera is connected with the second moving part;
the transport piece is used for transporting a product to be detected to a preset detection position of the detection assembly;
the main control unit is used for controlling the first moving part and the second moving part to drive the linear array camera to move so that the linear array camera scans the product to be detected and obtains the solder paste printing state of the product to be detected.
In some possible implementation manners, the main control unit is configured to control the first moving element to stop moving after moving for a preset photographing distance in the first direction, and then trigger the linear array camera to take a photograph.
In some possible implementation manners, the preset photographing distance is a width of a linear lens of the line camera.
In some possible implementations, the detection assembly further includes a linear light source connected to the second moving member and located below the line camera.
In some possible implementations, the light emitted by the linear light source is located right below the linear lens of the line camera.
In some possible implementations, the transport member includes a first transport member, a second transport member disposed opposite to the first transport member, and at least one sliding member slidably connected to the second transport member and located below the second transport member;
the movement direction of the sliding piece is perpendicular to the transmission direction of the second transmission piece.
In some possible implementations, the sliding member includes a guide rail and a sliding block slidably connected to the guide rail, and the second transmission member is connected to the sliding block.
In some possible implementations, the transport member further includes a stop sensor disposed between the first transport member and the second transport member;
the stop sensor is used for sending a stop signal to the main control unit when the product to be detected is located at a preset detection position;
the main control unit is used for controlling the first transmission piece and the second transmission piece to stop moving according to the stop signal.
In some possible implementations, the transport further includes a blocking member disposed between the first transport and the second transport;
the blocking piece is used for limiting the product to be detected to move along with the first transmission piece and the second transmission piece when the product to be detected is located at a preset detection position.
In some possible implementations, the blocking member includes a cylinder and a stopper connected to the cylinder.
In some possible implementations, the stop sensor is located in front of the stop sensor in the conveying direction of the first conveying member.
In some possible implementations, the transportation element further includes a deceleration sensor disposed between the first transportation element and the second transportation element, the deceleration sensor being located behind the stop sensor along a transportation direction of the first transportation element;
the deceleration sensor is used for sending a deceleration signal to the main control unit when the product to be detected is located at a preset detection position;
the main control unit is used for controlling the first transmission piece and the second transmission piece to reduce the movement speed according to the deceleration signal.
The detection machine comprises a transport piece, a detection assembly and a main control unit connected with the detection assembly; the detection assembly comprises a first moving part, a second moving part and a linear array camera, wherein the first moving part is arranged above the conveying part and moves along a first direction, the second moving part is connected with the first moving part and moves along a second direction, and the linear array camera is connected with the second moving part; the conveying piece conveys the product to be detected to a preset detection position of the detection assembly; the main control unit controls the first moving part and the second moving part to drive the linear array camera to move, so that the linear array camera scans the product to be detected, and the solder paste printing state of the product to be detected is obtained. Because the linear array camera's resolution ratio is high and the scanning details appear meticulously, scan the product that awaits measuring in order to detect the solder paste printing state of the product that awaits measuring through the linear array camera, compare in the solder paste printing state of the product that awaits measuring of manual detection, can improve detection efficiency and detection precision by a wide margin to can also detect every product that awaits measuring of batch production, with the rate of defective products detected of improvement.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a testing machine provided in an embodiment of the present application;
FIG. 2 is a schematic view of a detection assembly of a detection machine provided in an embodiment of the present application;
fig. 3 is a schematic view of a transport member of a detection machine according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features.
The detection machine can be applied to the LED lamp strip production industry (namely, products to be detected are LED lamp strips), and can also be applied to other industries needing to detect the printing state of solder paste. The to-be-detected product is transported to a preset detection position of the detection assembly through the transport piece, and the main control unit controls the first moving piece and the second moving piece to drive the linear array camera to move, so that the linear array camera scans the to-be-detected product, and the solder paste printing state of the to-be-detected product can be obtained. Because the linear array camera's resolution ratio is high and the scanning details appear meticulously, scan the product that awaits measuring in order to detect the solder paste printing state of the product that awaits measuring through the linear array camera, compare in the solder paste printing state of the product that awaits measuring of manual detection, can improve detection efficiency and detection precision by a wide margin to can also detect every product that awaits measuring of batch production, with the rate of defective products detected of improvement. In addition, compared with the traditional camera, the linear array camera has higher resolution, the scanning details are more fine, and the detection precision and the detection efficiency can also be improved.
Referring to fig. 1 to 3, an embodiment of the present application provides a detecting machine, including: the device comprises a transport piece 1, a detection assembly 2 and a main control unit connected with the detection assembly 2;
the detection assembly 2 comprises a first moving part 21 which is arranged above the transport part 1 and moves along a first direction, a second moving part 22 which is connected with the first moving part 21 and moves along a second direction, and a linear array camera 23 which is connected with the second moving part 22;
the transport piece 1 is used for transporting the product 100 to be detected to a preset detection position of the detection assembly 2;
the main control unit is used for controlling the first moving part 21 and the second moving part 22 to drive the line camera 23 to move, so that the line camera 23 scans the product 100 to be tested, and the solder paste printing state of the product 100 to be tested is obtained.
It should be noted that, when the transporting unit 1 transports the product 100 to be detected to a preset detection position of the detecting assembly 2 (the preset detection position may be specifically set according to the structure of the detecting assembly 2, for example, may be right below the detecting assembly 2), the main control unit starts to control the first moving part 21 and the second moving part 22 to drive the line camera 23 to move (i.e., the first moving part 21 may reciprocate in a first direction to drive the second moving part 22 to reciprocate in the first direction, and the second moving part 22 may reciprocate in a second direction at the same time to drive the line camera 23 to reciprocate in the first direction and the second direction, where the first direction may be an x-axis direction and the second direction may be a y-axis direction), so that the line camera 23 scans the product 100 to be detected (scanning refers to photographing the product 100 to be detected while the line camera 23 is moving, to photograph the entire product 100) to obtain the solder paste printing status of the product 100 (e.g., the thickness and shape of the solder paste, which may reflect whether the solder paste is shifted, less solder, more solder, or even solder). The method specifically comprises the following steps: the main control unit stores data of a preset detection position of the detection assembly 2 in advance, the main control unit controls the transportation member 1 to move again, the product 100 to be detected is transported to the preset detection position, then the main control unit controls the transportation member 1 to stop moving, and then the first movement member 21 is controlled to move in the first direction to drive the second movement member 22 and the line camera 23 to move in the first direction, the line camera 23 photographs the product 100 to be detected while moving, so as to scan the product 100 to be detected once, if the area of the product 100 to be detected is larger, the line camera 23 scans only a part of the product 100 to be detected once, therefore, scanning needs to be repeated for multiple times (during each scanning, the main control unit controls the second movement member 22 to move for a specified distance in the second direction, and then controls the first movement member 21 to drive the line camera 23 to scan once), so that the line camera 23 scans the whole product 100 to be detected, so that the solder paste printing state of the product 100 to be tested can be acquired. Because the linear array camera 23 has high resolution and the scanning details are fine, the product 100 to be detected is scanned by the linear array camera 23 to detect the solder paste printing state of the product 100 to be detected, compared with the manual detection of the solder paste printing state of the product 100 to be detected, the detection efficiency and the detection precision can be greatly improved, and each product 100 to be detected in batch production can be detected to improve the defective product detection rate. In addition, compared with the traditional camera, the linear array camera 23 has higher resolution, the scanning details are more fine, and the detection precision and the detection efficiency can also be improved.
In some embodiments, when the first moving member 21 drives the line camera 23 to move in the first direction, and scanning is performed once, the main control unit controls the first moving member 21 to stop moving after moving a preset photographing distance in the first direction, and then triggers the line camera 23 to photograph once, so as to photograph one picture, thereby preventing distortion of the image and improving the scanning accuracy. And the preset photographing distance can be the width of the linear lens of the linear array camera 23, and the linear array camera 23 can take a plurality of pictures by scanning once, so that when the linear array camera 23 scans once, the phenomenon of dislocation of the plurality of pictures is prevented, and the scanning accuracy is further improved.
Specifically, the main control unit may be a Programmable Logic Controller (PLC), or other devices capable of implementing data processing and control functions, which is not limited herein.
Specifically, because the lens of the line camera 23 is a linear lens, the photos taken by the line camera 23 are also linear (i.e., the photos have a narrow width and a long length), the line camera 23 scans the product 100 to be tested, i.e., the product 100 to be tested has taken a large number of photos, the main control unit can combine a plurality of photos taken by the line camera 23 to obtain an overall photo corresponding to the whole product 100 to be tested, and then the main control unit compares the solder paste printing state (i.e., the thickness and shape of the solder paste) presented on the overall photo with the standard solder paste printing state (i.e., the standard thickness and standard shape of the solder paste) pre-stored in the main control unit, if the difference between the solder paste printing state presented on the overall photo and the standard solder paste printing state is less than or equal to a preset error threshold (i.e., the solder paste has no offset, less tin, more tin or continuous tin), judging that the product 100 to be detected is a qualified product, controlling the transport member 1 to move continuously at the moment, and transporting the product 100 to be detected to the next procedure; if the difference is greater than a preset error threshold (namely, the tin paste has deviation, less tin, more tin or continuous tin), the product 100 to be detected is judged to be an unqualified product, and at the moment, an alarm device (such as a three-color lamp or a buzzer) arranged on the detection machine can be controlled to alarm.
Specifically, the first moving part 21 and the second moving part 22 may be both sliding tables, each sliding table includes a sliding rail (which may also be a conveyor belt or a ball screw), a sliding block slidably connected to the sliding rail, and a servo motor connected to the sliding rail and the sliding block, the servo motor is connected to the main control unit, the sliding rail of the first moving part 21 may be connected to a support frame 200, the sliding block of the first moving part 21 is connected to the sliding rail of the second moving part 22, and the sliding block of the second moving part 22 is connected to the line camera 23. The main control unit controls the angular displacement of the motor shaft of the servo motors of the first moving part 21 and the second moving part 22 to accurately control the advancing distance (or the retreating distance) of the sliding blocks of the first moving part 21 and the second moving part 22, so as to accurately control the moving distance of the linear array camera 23, and in addition, the servo motors of the first moving part 21 and the second moving part 22 can feed back the angular displacement of the servo motors to the main control unit in real time, so that the main control unit can know the real-time position of the linear array camera 23, so as to control the linear array camera 23 to take a picture once when the linear array camera 23 moves a preset distance (the preset distance can correspond to the width of a linear lens of the linear array camera 23), and ensure the image taking precision and stability of the linear array camera 23. Of course, the first moving member 21 and the second moving member 22 may also be other devices capable of realizing movement, such as a linear motor, and the like, and the application is not limited herein. In addition, the number of the first moving parts 21 may be two, two first moving parts 21 are arranged in parallel and at an interval, and the second moving part 22 is connected with the two first moving parts 21, thereby improving the stability of the detecting assembly 2.
In some embodiments, the transportation direction of the transportation member 1 is parallel to the first direction, and the transportation direction of the transportation member 1 is perpendicular to the second direction, so that when the first moving member 21 drives the line-scan camera 23 to scan the product 100 to be detected in the first direction, a line can be scanned along the extending direction of the length or width of the product 100 to be detected, thereby improving the scanning efficiency, further improving the detection efficiency, and maximizing the scanning area.
Further, the main control unit is configured to obtain the scanning times of the line camera 23 according to the length or the width of the product 100 to be detected and the length of the linear lens of the line camera 23, and perform corresponding times of scanning on the product 100 to be detected according to the scanning times. That is, when the length or the width of the product 100 to be detected is greater than the length of the linear lens, the main control unit may divide the length or the width of the product 100 to be detected by the length of the linear lens to obtain the scanning frequency of the line camera 23 (when the scanning frequency is not divisible, the scanning frequency is an integer number of a quotient plus 1, for example, the quotient is n.x, the scanning frequency is n +1), and the scanning frequency is the minimum scanning frequency for the line camera 23 to scan the whole product 100 to be detected, so as to further improve the scanning efficiency and further improve the detection efficiency.
In some embodiments, referring to fig. 1 and fig. 2, the detecting assembly 2 further includes a linear light source 24 connected to the second moving member 22 and located below the line camera 23 (the linear light source 24 may be connected to a slider of the second moving member 22 through a connecting plate), when the first moving member 21 drives the second moving member 22 to move, the linear light source 24 and the line camera 23 may be driven to move simultaneously, and the product 100 to be detected is irradiated by the linear light source 24, so as to improve an imaging effect of the line camera 23, and further improve the detecting accuracy. Moreover, the light emitted by the linear light source 24 is also linear, and the shooting range of the linear lens of the linear camera 23 is linear, so that the linear light source 24 can save cost on the basis of not influencing the shooting of the linear camera 23. In addition, the length of the light emitted by the linear light source 24 is the same as the movable distance of the linear camera 23 on the second moving member 22, so that when the linear camera 23 moves in the second direction, the linear light source 24 can irradiate a certain area of the product 100 to be measured, which is photographed by the linear camera 23, without moving.
Further, the light emitted by the linear light source 24 is located right below the linear lens of the linear camera 23, that is, when the linear lens photographs a certain area of the product 100 to be measured, the light emitted by the linear light source 24 irradiates the certain area of the product 100 to be measured, so as to further improve the imaging effect of the linear camera 23.
In some embodiments, referring to fig. 1 to 3, the transportation unit 1 includes a first transportation unit 11, a second transportation unit 12 disposed opposite to the first transportation unit 11, and at least one sliding unit 13 slidably connected to the second transportation unit 12 and located below the second transportation unit 12; the direction of movement of the slide 13 is perpendicular to the direction of transport of the second transport element 12. That is to say, the conveying directions of the first conveying member 11 and the second conveying member 12 are the same, the product 100 to be detected is simultaneously positioned on the first conveying member 11 and the second conveying member 12 for conveying, and the moving direction of the sliding member 13 is perpendicular to the conveying direction of the second conveying member 12, so that the second conveying member 12 can slide on the sliding member 13 to adjust the distance between the first conveying member 11 and the second conveying member 12, thereby adapting to the product 100 to be detected with different sizes, and improving the applicability of the detecting machine. In addition, the first and second conveying members 11 and 12 may be connected to a conveyor of a previous process (e.g., a conveyor of a solder paste printing machine), thereby realizing automatic feeding of the inspection machine.
Specifically, referring to fig. 3, the sliding member 13 includes a guide rail 131 and a sliding block 132 slidably connected to the guide rail 131, the second transmission member 12 is connected to the sliding block 132, and the sliding block 132 slides on the guide rail 131 to drive the second transmission member 12 to slide, so that the structure is simple and the operation is stable. In addition, the sliding member 13 further includes a driving member 133 (e.g., a motor or a hand crank) disposed on the guide rail 131 and connected to the sliding block 132 to drive the sliding block 132 to move. Also, in order to save space, the driving motors 111 of the first and second transferring members 11 and 12 may be provided on the guide rail 131. In addition, since the length of the second transfer member 12 is generally long, the number of the sliding members 13 may be provided in plural, respectively at the front end, the middle portion and the rear end of the second transfer member 12, to improve the stability of the second transfer member 12.
Specifically, the first transmission member 11 and the second transmission member 12 may be a belt conveyor, a roller conveyor or a chain conveyor, and therefore the first transmission member 11 and the second transmission member 12 may be specifically arranged according to actual situations, which is not limited herein.
Further, referring to fig. 1 and 3, the transportation unit 1 further includes a stop sensor 14 disposed between the first transportation unit 11 and the second transportation unit 12 (the stop sensor 14 is disposed below the first transportation unit 11 and the second transportation unit 12 to avoid affecting the movement of the product 100 to be tested, and the stop sensor 14 may be connected to the first transportation unit 11 through a connection block); the stop sensor 14 is configured to send a stop signal to the main control unit when the product 100 to be detected is located at a preset detection position (the stop sensor 14 may be a photoelectric sensor, and the deceleration sensor 16 may be triggered when the product 100 to be detected reaches the preset detection position, that is, right above the stop sensor 14); the main control unit is used for controlling the first transmission piece 11 and the second transmission piece 12 to stop moving according to the stop signal, so that the first transmission piece 11 and the second transmission piece 12 are prevented from transporting the product 100 to be detected to other positions from a preset detection position before the product 100 to be detected is detected, and the detection efficiency is improved.
Further, referring to fig. 3, the transporting unit 1 further includes a blocking member 15 disposed between the first transporting unit 11 and the second transporting unit 12 (the blocking member 15 may be connected to the second transporting unit 12 through a connecting post), and the blocking member 15 is configured to limit the movement of the product 100 to be detected along with the first transporting unit 11 and the second transporting unit 12 when the product 100 to be detected is located at the preset detection position. That is, the product 100 to be detected is blocked by the blocking member 15 before the product 100 to be detected is detected, so that the product 100 to be detected is further prevented from being transported to other positions from the preset detection position.
Specifically, the blocking member 15 includes an air cylinder 151 and a blocking member 152 connected to the air cylinder 151, the air cylinder 151 can control the blocking member 152 to ascend or descend, that is, before the product 100 to be detected is detected, the air cylinder 151 controls the blocking member 152 to ascend and be located on the movement path of the product 100 to be detected, so that the blocking member 152 blocks the product 100 to be detected, and after the product 100 to be detected is detected, the air cylinder 151 controls the blocking member 152 to descend and not be located on the movement path of the product 100 to be detected, so that the blocking member 152 does not block the product 100 to be detected. In addition, after the product 100 to be tested is tested, the main control unit controls the cylinder 151 to lower the stopper 152 and also controls the first and second transferring members 11 and 12 to start moving to transfer the product 100 to be tested to the next process.
Further, the blocking member 15 is located in front of the stop sensor 14 along the transmission direction of the first transmission member 11 (as shown in the right side of the stop sensor 14 in fig. 3), that is, the product 100 to be tested firstly passes over the stop sensor 14 during the movement process, and then contacts the blocking member 15, so as to prevent the product 100 to be tested from moving from the preset detection position to other positions by inertia after the first transmission member 11 and the second transmission member 12 stop moving.
Specifically, referring to fig. 1 and 3, the transportation member 1 further includes a deceleration sensor 16 disposed between the first transportation member 11 and the second transportation member 12 (the deceleration sensor 16 is disposed below the first transportation member 11 and the second transportation member 12 to avoid affecting the movement of the product 100 to be detected, the deceleration sensor 16 may be connected to the first transportation member 11 through a connection block), the deceleration sensor 16 is disposed behind the stop sensor 14 along the transportation direction of the first transportation member 11 (e.g., on the left side of the stop sensor 14 shown in fig. 3), and the deceleration sensor 16 is configured to send a deceleration signal to the main control unit when the product 100 to be detected is located at a preset detection position (the deceleration sensor 16 may be a photoelectric sensor, and when the product 100 to be detected reaches the preset detection position, that is, the deceleration sensor 16 is triggered); the main control unit is used for controlling the first transmission member 11 and the second transmission member 12 to reduce the movement speed according to the deceleration signal. That is, in the process of movement, the product 100 to be detected firstly passes over the deceleration sensor 16, then passes over the stop sensor 14, and finally contacts the blocking member 15, so that when the product 100 to be detected reaches the preset detection position, the first transmission member 11 and the second transmission member 12 decelerate and then stop, so as to weaken the inertia of the product 100 to be detected, thereby reducing the impact force on the blocking member 15, and prolonging the service life of the blocking member 15. In addition, the main control unit can also control the cylinder 151 to drive the stopper 152 to move up to the moving path of the product 100 to be tested according to the deceleration signal.
Specifically, referring to fig. 1 to 3, the transporting member 1 further includes a start sensor 17 disposed between the first transporting member 11 and the second transporting member 12 (the start sensor 17 is disposed below the first transporting member 11 and the second transporting member 12 to avoid affecting the movement of the product 100 to be detected, the start sensor 17 may be connected to the first transporting member 11 through a connecting block), the start sensor 17 is disposed at an end of the first transporting member 11 away from the deceleration sensor 16, that is, at an entrance of the first transporting member 11 and the second transporting member 12, and when the conveyer of the previous process transports the product 100 to be detected above the start sensor 17, the start sensor 17 sends a start signal to the main control unit (the start sensor 17 may be a photoelectric sensor, and when the product 100 to be detected reaches a position right above the start sensor 17, the start sensor 17 may be triggered); the main control unit controls the first transmission member 11 and the second transmission member 12 to start moving according to the start signal, so that the first transmission member 11 and the second transmission member 12 do not move (i.e. in a standby state) when the product 100 to be detected does not exist on the first transmission member 11 and the second transmission member 12, the energy consumption of the detection machine is reduced, and the service lives of the first transmission member 11 and the second transmission member 12 are prolonged.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed descriptions of other embodiments, and are not described herein again.
In a specific implementation, each component or structure may be implemented as an independent entity, or may be combined arbitrarily and implemented as one or several entities, and the specific implementation of each component or structure may refer to the foregoing embodiments, which are not described herein again.
The above detailed description is provided for a detection machine provided by the embodiment of the present invention, and the principle and the implementation of the present invention are explained by applying a specific example, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (12)
1. A testing machine, comprising: the device comprises a transport piece, a detection assembly and a main control unit connected with the detection assembly;
the detection assembly comprises a first moving part, a second moving part and a linear array camera, wherein the first moving part is arranged above the transport part and moves along a first direction, the second moving part is connected with the first moving part and moves along a second direction, and the linear array camera is connected with the second moving part;
the transport piece is used for transporting a product to be detected to a preset detection position of the detection assembly;
the main control unit is used for controlling the first moving part and the second moving part to drive the linear array camera to move so that the linear array camera scans the product to be detected and obtains the solder paste printing state of the product to be detected.
2. The detector according to claim 1, wherein the main control unit is configured to control the first moving member to stop moving after moving for a preset photographing distance in the first direction, and then trigger the line camera to take a photograph.
3. The inspection machine of claim 2, wherein the preset photographing distance is a width of a linear lens of the line camera.
4. The inspection machine of claim 1 wherein said inspection assembly further includes a line light source connected to said second motion member and positioned below said line camera.
5. The inspection machine of claim 4 wherein said line source emits light directly beneath the line lens of said line camera.
6. The inspection machine of claim 1, wherein the transport member includes a first transport member, a second transport member disposed opposite the first transport member, and at least one slide member slidably coupled to the second transport member and positioned below the second transport member;
the movement direction of the sliding piece is perpendicular to the transmission direction of the second transmission piece.
7. The inspection machine of claim 6 wherein said slider includes a guide rail and a slide block slidably coupled to said guide rail, said second transmission member being coupled to said slide block.
8. The inspection machine of claim 6, wherein said transport member further includes a stop sensor disposed between said first transport member and said second transport member;
the stop sensor is used for sending a stop signal to the main control unit when the product to be detected is located at a preset detection position;
the main control unit is used for controlling the first transmission piece and the second transmission piece to stop moving according to the stop signal.
9. The inspection machine of claim 8, wherein said transport member further includes a blocking member disposed between said first transport member and said second transport member;
the blocking piece is used for limiting the product to be detected to move along with the first transmission piece and the second transmission piece when the product to be detected is located at a preset detection position.
10. The inspection machine of claim 9, wherein said blocking member includes a cylinder and a stop coupled to said cylinder.
11. The inspection machine of claim 9, wherein said stop is located forward of said stop sensor in the direction of travel of said first conveyance member.
12. The inspection machine of claim 11, wherein said transport member further includes a deceleration sensor disposed between said first transport member and said second transport member, said deceleration sensor being located behind said stop sensor in a transport direction of said first transport member;
the deceleration sensor is used for sending a deceleration signal to the main control unit when the product to be detected is located at a preset detection position;
the main control unit is used for controlling the first transmission piece and the second transmission piece to reduce the movement speed according to the deceleration signal.
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| CN202011488435.7A CN113203751A (en) | 2020-12-16 | 2020-12-16 | Detection machine |
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| CN202011488435.7A CN113203751A (en) | 2020-12-16 | 2020-12-16 | Detection machine |
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Application publication date: 20210803 |