Double-station movable plate detection equipment and detection method

Abstract

The invention relates to the technical field of automation, in particular to double-station movable plate detection equipment which can efficiently detect plates, two feeding stations arranged on a feeding device and two weighing transfer mechanisms arranged on a weighing device are used for feeding and transferring materials synchronously, and the detection efficiency is improved. The double-station material taking mechanism of the detection device carries out material taking and detection at the same time, so that the working efficiency can be greatly improved; furthermore, the detection accuracy can be improved, static electricity between the plates can be reduced and the plates can be separated through the limiting effect of an adjustable limiting piece of the feeding device, the blowing effect of a blowing hole and the scraping and sweeping effect of a brush assembly, it is guaranteed that a single plate can be moved, the detection omission rate is reduced, single detection of the plates is further guaranteed through weighing, and the detection efficiency is improved. And through the line scanning detection effect of the upper visual detector and the lower visual detector, the detection accuracy and efficiency are improved, so that the embodiment of the invention has relatively high practicability.

Description

Technical Field

[0001] The invention relates to the field of automation technology, and in particular to a double-station mobile sheet material detection device and a detection method. Background Art

[0002] The quality inspection of printed circuit boards and other sheet materials is a crucial process that directly affects the quality and performance of the final product. At present, the quality inspection process of sheet materials includes loading, moving, testing, unloading and packaging. The inspection process usually collects images of the sheet surface and then analyzes and determines whether the sheet is qualified.

[0003] However, when collecting images, in order to ensure the clarity of image collection, it is necessary to temporarily stop the sheet material transmission in order to obtain clear image information. This method leads to the interruption of the production line and reduces production efficiency. In order to achieve accurate stopping when collecting images and continuing to transmit afterwards, the control system needs to perform complex fixed-point sensing and calculations, which not only increases the complexity of the control system, but also makes the production program more difficult to control. The control system needs to accurately control when to stop the sheet material transmission and when to resume transmission, which puts high demands on real-time monitoring and feedback mechanisms, and increases the difficulty of program control.

[0004] Therefore, although the image acquisition and detection method in the prior art can realize the quality detection of sheet materials, it has obvious shortcomings in production efficiency, control system complexity and program control difficulty. Summary of the invention

[0005] In view of the problems of the prior art, the present invention provides a double-station mobile plate material detection device. The detection device performs plate material detection by line scanning. The plate material can be scanned and detected while maintaining a uniform movement during the detection process, thereby improving the detection efficiency.

[0006] In order to solve the above technical problems, the first aspect of the present invention adopts the following technical solution: a double-station mobile sheet material detection device, comprising a frame, and also comprising a loading device, a weighing device, a detection device and a material selection device all arranged on the frame;

[0007] The feeding device is used to transfer the sheet material to be processed to the weighing device;

[0008] The weighing device is used to detect the weight of the sheet material to be processed, and determine whether it is the weight of a single sheet material. When it is determined to be the weight of a single sheet material, the sheet material is transmitted to the detection device;

[0009] The detection device includes a double-station material taking mechanism, a detection mechanism and a conveying mechanism, all of which are installed on the frame. The conveying mechanism is used to convey the sheet material. The detection mechanism includes an upper visual detector and a lower visual detector. Both the upper visual detector and the lower visual detector are line scanning cameras.

[0010] The upper visual detector is located above the sheet material, and the lower visual detector is located below the sheet material; the double-station material-picking mechanism is used to drive the sheet material to move so that the lower visual detector detects the bottom surface of the sheet material; the conveying mechanism drives the sheet material to move so that the upper visual detector detects the top surface of the sheet material;

[0011] The blanking and selecting device is used to select good or bad sheets inspected by the inspection device, and to transfer the good sheets to the next station.

[0012] Preferably, the conveying mechanism is provided with an inspection aisle, and the inspection viewing angle of the lower visual detector is located below the inspection aisle. When the sheet material passes through the inspection aisle, the lower visual detector is used to inspect the bottom surface of the sheet material.

[0013] Preferably, the detection mechanism further comprises a lighting assembly, and the lighting assembly is used to provide lighting for the visual detector during the detection process;

[0014] The lighting assembly includes an angle adjustment bracket and a light source, and the angle adjustment bracket includes a fixing part and an adjusting part. The fixing part is installed on the bracket, and an arc hole is formed on the fixing part. One end of the adjusting part is fixed to the light source, and a connecting hole is formed on the other end of the adjusting part. The connecting hole is locked at different positions of the arc hole by screws to change the installation angle between the adjusting part and the fixing part.

[0015] Preferably, the double-station material picking mechanism includes an x-drive unit, two groups of material picking components and two guide rails, the material picking components include a material picking unit, a y-drive unit and a z-drive unit, the guide rails are installed on the frame and located above the conveying mechanism, the x-drive unit is used to drive the material picking unit to move along the guide rails, the y-drive unit is used to drive the material picking unit to rise and fall, the z-drive unit is used to drive the material picking unit to move radially along the guide rails, and the material picking unit is used to drive the sheet material to move so that the visual detector can detect the sheet material.

[0016] Preferably, the x driving unit comprises an x ​​slide and an x ​​driver, the x slide is slidably mounted on the guide rail, the x driver is used to drive the x slide to move on the guide rail, the y driving unit is mounted on the x slide, and the z driving unit is mounted on the y driving unit;

[0017] The y driving unit comprises a y slide rail, a y slide seat and a y driver, wherein the y slide rail is mounted on the x driving unit, the y slide seat is slidably mounted on the y slide rail, the y slide rail is arranged perpendicular to the guide rail, and the y driver is used to drive the y slide seat to move on the y slide rail;

[0018] The z driving unit comprises a z slide rail, a z slide seat and a z driver, the z slide rail is mounted on the y driving unit, the material picking unit is mounted on the z slide seat, the z slide seat is slidably mounted on the z slide rail, and the z driver is used to drive the z slide seat to move on the z slide rail.

[0019] Preferably, the loading device includes two loading stations and a plate limiting mechanism, the loading station is used to place the plate to be processed, the plate limiting mechanism includes an adjustable limiting member and a position adjustment component, the loading station is provided with a plurality of limiting holes, the limiting holes are equipped with the adjustable limiting members, the position adjustment component is used to control the position of the adjustable limiting member in the limiting hole, and the adjustable limiting member is used to limit the position of the plate in the loading station; the adjustable limiting member is provided with a blowing hole, the blowing hole is connected to an external blowing structure, and the blowing hole faces the plate.

[0020] Preferably, the position adjustment assembly is located below the loading station, and the position adjustment assembly includes a synchronization unit, a slider and a track, the slider is installed on the track, the synchronization unit is used to drive the slider to slide on the track, and the slider is used to drive the adjustable limiter to move;

[0021] The position adjustment assembly also includes a mounting block, the adjustable limiter is assembled on the mounting block, two mounting blocks are provided and are respectively mounted on different sliders, and the spacing between different adjustable limiters is adjusted by adjusting the spacing between the two mounting blocks through a synchronization unit.

[0022] Preferably, the synchronization unit includes a synchronization belt, a first driver and a synchronization block, the mounting block is equipped with the synchronization block, the synchronization block is installed on the synchronization belt, the first driver is used to drive the synchronization belt to rotate, and the synchronization belt makes the two synchronization blocks approach each other or move away from each other.

[0023] Preferably, the weighing device includes a weighing transfer mechanism and a weighing platform. The weighing transfer mechanism is used to move the sheet material of the feeding device to the weighing platform, and the weighing platform performs weight detection. If the weight is qualified, the weighing transfer mechanism transfers the weighed sheet material to the detection device.

[0024] Preferably, the material selection device includes a material transfer mechanism, a good product material unloading table and a defective product material unloading table. If the sheet material that has completed the inspection is a good product, the material transfer mechanism moves the sheet material to the good product material unloading table. If the sheet material that has completed the inspection is a defective product, the material transfer mechanism moves the sheet material to the defective product unloading table.

[0025] A second aspect of the present invention provides a detection method, comprising the following steps:

[0026] A. Place the sheet material on the loading station, adjust the position of the sheet material through the plate limiting mechanism, and blow air to the sides of the stacked sheets through the blowing holes to separate the sheets;

[0027] B. The sheet metal at the loading station is transferred to the weighing platform for weighing via the weighing transfer mechanism; if the weighing is qualified, it is transferred to the transmission mechanism of the detection device by the weighing transfer mechanism;

[0028] C. The conveying mechanism conveys the sheet material. When the sheet material approaches the lower visual detector, the double-station material taking mechanism sucks up the sheet material, allowing the sheet material to pass through the detection channel at a uniform speed. The lower visual detector performs a line scan detection on the bottom surface of the sheet material.

[0029] D. After the lower visual detector completes the inspection, the double-station material-taking mechanism places the sheet back to the conveying mechanism, which continues to convey the sheet so that the sheet passes under the upper visual detector at a uniform speed. The upper visual detector performs a line scan inspection on the top surface of the sheet;

[0030] E. The sheet material that has completed the inspection of the upper visual detector is further conveyed by the conveying mechanism to the material unloading and sorting device. According to the inspection results of the upper visual detector and the lower visual detector, if it is a good product, it will continue to be transferred by the conveying mechanism to the next station for cleaning and packaging. If it is a defective product, the unloading transfer mechanism will transfer the defective sheet material to the defective product unloading table.

[0031] Beneficial effects of the present invention:

[0032] The present invention provides a double-station moving sheet material inspection device, which uses two line scanning cameras, one located above the sheet material and the other located below the sheet material. The upper and lower surfaces of the sheet material are scanned and inspected during the movement of the sheet material. The inspection can be performed without stopping the transmission of the sheet material, thereby significantly improving the inspection efficiency, reducing the production downtime, and improving the smoothness of the overall production line. Furthermore, there is no need for complex fixed-point sensing and calculation, which simplifies the design of the control system, reduces the complexity of the production program, makes the entire inspection process simpler and easier, and helps to reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention;

[0034] Figure 2 It is a structural schematic diagram of the feeding device of the present invention;

[0035] Figure 3 It is a structural schematic diagram of a single loading station of the present invention;

[0036] Figure 4 It is a structural schematic diagram of the plate limiting mechanism of the present invention;

[0037] Figure 5 It is a structural schematic diagram of the plate limiting mechanism of the present invention from another perspective;

[0038] Figure 6 The structure of the detection device of the present invention is shown in FIG. Figure 1 ;

[0039] Figure 7 The structure of the detection device of the present invention is shown in FIG. Figure 2 ;

[0040] Figure 8 It is a structural schematic diagram of the detection mechanism of the present invention;

[0041] Fig. 9 It is a structural schematic diagram of the upper visual detector, the lower visual detector and the transmission mechanism of the present invention;

[0042] Fig.10 It is a structural schematic diagram of the double-station material taking structure of the present invention;

[0043] Fig.11 It is a structural schematic diagram of the guide rail and the x drive unit of the present invention;

[0044] Fig.12 It is a schematic structural diagram of the y driving unit, the z driving unit and the material taking unit of the present invention;

[0045] Fig.13 for Fig.12 Schematic diagram of the decomposition structure;

[0046] Fig.14 It is a structural schematic diagram of the weighing device of the present invention;

[0047] Fig.15 It is a structural schematic diagram of the material selection device of the present invention;

[0048] Fig.16 It is the work flow chart of the present invention.

[0049] exist Figures 1 to 16 Reference numerals in the drawings include:

[0050] 01-frame, 02-feeding device, 03-weighing device, 04-detection device, 05-feeding and selecting device, 11-feeding station, 12-limiting hole, 13-blowing hole, 14-x limit rod, 15-y limit rod, 16-slider, 17-track, 18-mounting block, 19-synchronous belt, 110-synchronous block, 111-a synchronous belt, 112-b synchronous belt, 113-y track, 114-y slider, 115-baffle, 116-lifting drive, 117-lifting plate, 118-lifting drive rod, 119-brush assembly, 120-dual-station drive mechanism, 22-transmission mechanism, 23-upper visual detector , 24-lower visual detector, 25-detection aisle, 26-light source, 27-fixing part, 28-adjusting part, 29-arc hole, 210-connecting hole, 211-guide rail, 212-feeding unit, 213-y drive unit, 214-z drive unit, 215-x slide, 216-x driver, 217-y slide, 218-y slide, 219-y driver, 220-z slide, 221-z slide, 222-z driver, 223-fixed frame, 224-x synchronous belt, 31-weighing transfer mechanism, 32-weighing table, 51-material unloading transfer mechanism, 52-good product unloading table, 53-bad product unloading table. DETAILED DESCRIPTION

[0051] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0052] Embodiment 1:

[0053] This embodiment provides a dual-station mobile sheet material detection device, such as Figures 1 to 16 , including a frame 01, and also including a loading device 02, a weighing device 03, a detection device 04 and a material selection device 05 all arranged on the frame 01;

[0054] The feeding device 02 is used to transfer the sheet material to be processed to the weighing device 03; the weighing device 03 is used to detect the weight of the sheet material to be processed to determine whether it is the weight of a single sheet material, and when it is determined to be the weight of a single sheet material, the sheet material is transferred to the detection device 04;

[0055] The detection device 04 includes a double-station material taking mechanism, a detection mechanism and a conveying mechanism 22, all of which are installed on the frame 01. The conveying mechanism 22 is used to convey the sheet material. The detection mechanism includes an upper visual detector 23 and a lower visual detector 24. Both the upper visual detector 23 and the lower visual detector 24 are line scanning cameras.

[0056] The upper visual detector 23 is located above the sheet material, and the lower visual detector 24 is located below the sheet material; the double-station material-taking mechanism is used to drive the sheet material to move so that the lower visual detector 24 detects the bottom surface of the sheet material; the conveying mechanism 22 drives the sheet material to move so that the upper visual detector 23 detects the top surface of the sheet material;

[0057] The blanking and sorting device 05 is used to sort the sheets inspected by the inspection device 04 into good or defective products, and to transmit the sheets inspected as good products to the cleaning and packaging device (not shown in the drawings), which cleans and packages the sheets that have passed the inspection. The cleaning and packaging device is a prior art and will not be described in detail in this embodiment.

[0058] Specifically, Figure 2 and Fig.16 As shown, the sheet material operation process of this embodiment is: first place the sheet material to be operated on the loading device 02, and the weighing device 03 moves the sheet material at the loading device 02 to the weighing platform 32. The purpose of weighing is to determine whether the moved sheet material is one, so as to prevent the sheet material from sticking due to static electricity and other reasons. After the weighing is qualified, the sheet material is moved to the conveying mechanism 22 of the detection device 04, and the double-station material picking mechanism is cooperated to perform line scanning detection on the two surfaces of the sheet material through the upper visual detector 23 and the lower visual detector 24 to determine whether the sheet material is qualified, and provide the detection result to the unloading and sorting device 05, and the good products and defective products are separated and unloaded by the unloading and sorting device 05. The defective products can be manually recycled, and the good products are conveyed to the packaging device for packaging, thereby completing the detection and packaging of the sheet material.

[0059] More specifically, Figures 2 to 5 As shown, the loading device 02 of this embodiment includes two loading stations 11 and a plate limiting mechanism, the loading station 11 is used to place the plate to be processed, the plate limiting mechanism includes an adjustable limiting member and a position adjustment component, the loading station 11 is provided with a plurality of limiting holes 12, the limiting holes 12 are equipped with the adjustable limiting members, the position adjustment component is used to control the position of the adjustable limiting member in the limiting hole 12, the adjustable limiting member is used to limit the position of the plate in the loading station 11; the adjustable limiting member is provided with a blowing hole 13, the blowing hole 13 is connected to the external blowing structure, and the blowing hole 13 faces the plate.

[0060] Specifically, Figure 2 As shown, the present embodiment has two loading stations 11, and sheet materials can be placed in the two loading stations 11 at the same time, so that the subsequent stations can continuously take materials from the two loading stations 11. If the subsequent stations are provided with two taking mechanisms for taking materials, it helps to improve the working efficiency.

[0061] Furthermore, the sheet material is limited at the loading station 11 by an adjustable limiter, such as Figure 2 and Figure 3 The adjustable limiter includes a plurality of x limit rods 14 and y limit rods 15, and the position adjustment assembly includes an x ​​position adjustment assembly and a y position adjustment assembly. The loading station 11 is provided with a limit hole 12, and the shape of the limit hole 12 is as follows: Figure 3 , has a certain length, therefore, by adjusting the position of the x-limiting rod 14 and the y-limiting rod 15 in the limiting hole 12, it can adapt to sheets of different sizes. Optionally, the x-limiting rod 14 and the y-limiting rod 15 are both located below the loading station 11, and the x-limiting rod 14 and the y-limiting rod 15 are both provided with limiting holes 12 from bottom to top. The x-limiting rod 14 and the y-limiting rod 15 are both provided with blowing holes 13, and the blowing holes 13 are connected to external blowing equipment. During operation, the blowing holes 13 blow air toward the sheet, which can effectively reduce the static electricity generated between the sheets. Then, the x-limiting rod 14 and the y-limiting rod 15 can achieve the limiting effect on the sheet, and at the same time, it can also achieve static electricity removal, prevent the sheet from sticking when moving, and ensure that each sheet can be subjected to production operations such as quality inspection. The adjustable limiting parts realize multiple functions, which helps to make the production equipment structure simpler, reduce maintenance costs, and facilitate production control, and have higher practicality.

[0062] The x position adjustment component includes a synchronization unit, a slider 16 and a track 17. The slider 16 is installed on the track 17. The synchronization unit is used to drive the slider 16 to slide on the track 17. The slider 16 is used to drive the adjustable limiter to move. The x position adjustment component also includes a mounting block 18. The adjustable limiter is assembled on the mounting block 18. There are two mounting blocks 18 and they are respectively installed on different sliders 16. The spacing between different adjustable limiters can be adjusted by adjusting the spacing between the two mounting blocks 18 by the synchronization unit. Specifically, Figure 4 As shown, the x-limiting rods 14 are respectively fixed on the mounting blocks 18. This embodiment is described by taking four x-limiting rods 14 as an example. For the convenience of control, two mounting blocks 18 and two tracks 17 are provided, and four sliders 16 are provided correspondingly. One mounting block 18 is fixed to two sliders 16, and the sliders 16 are slidably provided on the tracks 17. Then, as long as the two sliders 16 are controlled to move closer to or away from each other, the size of the space formed between the x-limiting rods 14 can be adjusted, thereby being suitable for sheets of different sizes.

[0063] In this embodiment, the movement of the mounting block 18 is controlled by a synchronization unit, and the synchronization unit includes a synchronization belt 19, a first driver (not shown in the drawings) and a synchronization block 110, wherein the first driver is a prior art, such as a motor, etc.; the mounting block 18 is equipped with the synchronization block 110, and the synchronization block 110 is installed on the synchronization belt 19, and the first driver is used to drive the synchronization belt 19 to rotate, and the synchronization belt 19 makes the two synchronization blocks 110 approach each other or move away from each other, such as Figure 4 and Figure 5 As shown, the synchronous belt 19 is arranged between the two tracks 17, and the synchronous block 110 is also located between the two tracks 17. The two synchronous blocks 110 are respectively installed on the two mounting blocks 18. In addition, the synchronous belt 19 forms a rotating loop, as shown in FIG. Figure 5 It includes a synchronous belt 111 and b synchronous belt 112, wherein one synchronous block 110 is fixed to the a synchronous belt 111, and the other synchronous block 110 is fixed to the b synchronous belt 112, so that the synchronous belt 19 is moved along the Figure 5 As shown, when the synchronous belt 19 rotates clockwise, the two synchronous blocks 110 will move away from each other under the drive of the synchronous belt 19, and the distance between the two mounting blocks 18 will increase, and the distance between the x-limiting rods 14 will also increase. Conversely, when the synchronous belt 19 rotates counterclockwise, the two synchronous blocks 110 will approach each other, the distance between the two mounting blocks 18 will decrease, and the distance between the x-limiting rods 14 will decrease. Therefore, by controlling the rotation of the synchronous belt 19, the size of the spacing between the x-limiting rods 14 can be controlled, and it is suitable for sheets of different sizes, with a simple structure and high flexibility.

[0064] Further, such as Figure 3 In this embodiment, the plate is limited in the y direction by the y limiting rod 15. The y position adjustment assembly includes a y track 113 and a y slider 114. The y limiting rod 15 is installed on the y slider 114. By driving the y slider 114 to move on the y track 113, the y limiting rod 15 can be controlled to move, thereby cooperating with the x limiting rod 14 to achieve the limiting effect on the plate. The driving structure for controlling the movement of the y slider 114 is an existing technology, such as a servo motor or a cylinder.

[0065] Furthermore, the plate limiting mechanism further includes a baffle 115. After the plate is placed on the loading station 11, it abuts against the baffle 115, and the movement of the plate is limited by the baffle 115. Specifically, Figure 3 As shown, the baffle 115 is arranged at a position opposite to the y limiting rod 15, and limits the sheet material in the y direction together with the y limiting rod 15.

[0066] In order to adjust the height of the adjustable limiter inserted into the limit hole 12 to adapt to different heights and quantities of sheets, such as Figure 2 and Figure 3As shown, this embodiment further provides a lifting mechanism, wherein the position adjustment component is located below the loading station 11, and the lifting mechanism is used to drive the loading station 11 to lift and lower so as to adjust the distance between the loading station 11 and the position adjustment component. The lifting mechanism includes a lifting driver 116, a lifting plate 117, and a lifting drive rod 118, wherein the lifting drive rod 118 is drivingly connected to the output end of the lifting driver 116, and the lifting drive rod 118 is used to drive the loading station 11 to lift and lower. Among them, the lifting driver 116 is a prior art, such as a cylinder. Specifically, the position adjustment component is installed on the frame 01, and the lifting driver 116 drives the loading station 11 to lift and lower through the lifting drive rod 118, thereby controlling the length of the adjustable limiter extending out of the limit hole 12, thereby meeting the height requirements of different sheet materials.

[0067] This embodiment further includes a brush assembly 119, which is used to scrape both sides of the sheet material. Figure 3 As shown, the brush assembly 119 can be installed on the adjustable limiter and move with the adjustable limiter. Of course, a structure that drives the brush assembly 119 to move independently can also be set. It is preferred to set the brush assembly 119 on the adjustable limiter, that is, the brush assembly 119 is located on the side of the sheet and moves with the adjustable limiter. At the loading station, the sheets are in a stacked state. In order to avoid the adhesion of the sheets when transferring them, when the adjustable limiter limits the sheets, the brush assembly is used to scrape the side of the sheets to separate the sheets and avoid adhesion between the sheets, ensuring that a single sheet can be transferred so that the operation of the next station can proceed normally. The brush assembly 119 includes a brush and a structure for fixing the brush, which are all prior art, such as fixing the brush to the adjustable limiter by screws, bolts, etc., which will not be described in detail here.

[0068] In order to improve production efficiency, the present embodiment has two loading stations 11, such as Figure 2 As shown, a double-station drive mechanism 120 is installed on the frame 01, and the double-station drive mechanism 120 drives the two loading stations 11 to move. If two manipulator structures for picking up materials are set at the next station, when one manipulator structure releases materials, the other manipulator structure can pick up materials at the loading station 11, thereby effectively improving production efficiency. The double-station drive mechanism 120 is a prior art, such as a servo motor drive, a screw drive, etc., which drives the loading station 11 to move to cooperate with the action of picking up materials at the next station, thereby realizing fast and efficient loading work.

[0069] The weighing device 03 of this embodiment is as follows Fig.14 As shown, it includes a weighing transfer mechanism 31 and a weighing platform 32. The weighing transfer mechanism 31 is used to move the sheet material of the loading device 02 to the weighing platform 32, and the weighing platform 32 performs weight detection. If the weight is qualified, the weighing transfer mechanism 31 transfers the weighed sheet material to the detection device.

[0070] Specifically, the weighing and transferring mechanism 31 is of prior art, including a weighing drive component and a weighing and picking component. The weighing drive component has structures such as motor drive and cylinder drive. The weighing and picking component adopts a suction cup material picking method, and the weighing drive component drives the weighing and picking component to move, and then picks up materials at two loading stations, and places the obtained sheet materials on the weighing platform 32 for weighing. The structure of the weighing platform 32 is also of prior art, and is provided with corresponding weighing sensors and corresponding qualified weight values ​​of the sheet materials. Therefore, after the sheet materials are placed on the weighing platform 32 for weight detection, the quantity of the sheet materials can be determined to reduce the occurrence of missed detections.

[0071] The detection device 04 of this embodiment is as follows: Figures 6 to 13 As shown, the conveying mechanism 22 is a prior art, such as conveyor belt conveying. The sheet material is conveyed by the conveying mechanism 22. Since the sheet material moves on the conveying mechanism 22, the lower visual detector 24 may have a problem of limited detection angle. Therefore, when the sheet material moves close to the lower visual detector 24, the double-station material-picking mechanism can grab the sheet material, so that the sheet material leaves the conveying mechanism 22, and the double-station material-picking mechanism drives the sheet material to move. When the sheet material passes through the lower visual detector 24, the line scan of the bottom surface of the sheet material can be performed during the movement of the sheet material to check whether there is a problem with the bottom surface of the sheet material; after completing the detection of the lower visual detector 24, the double-station material-picking mechanism puts the sheet material back into the conveying mechanism 22, and the conveying mechanism 22 continues to transport the sheet material. When the sheet material passes through the detection area of ​​the upper visual detector 23, the upper visual detector 23 performs a line scan on the top surface of the sheet material to determine whether there is a problem with the top surface of the sheet material. When both surfaces of the sheet material are detected, it can be determined whether there is a problem with the sheet material, and then the sheet material can be sorted into good and bad products. In this embodiment, since the visual detector is a line scanning camera, the sheet material does not need to stop at a fixed point when scanning. It is sufficient to make the double-station material picking mechanism and the conveying mechanism 22 move at a constant speed. Therefore, the efficiency of detection can be improved, and there is no need to set a fixed-point detection function. The functional control of the control system can be simpler and more practical.

[0072] like Fig. 9 and Fig.10 As shown in FIG. 2 , the positions of the upper visual detector 23 and the lower visual detector 24 of this embodiment are shown. The bottom surface of the sheet is first detected, and then the sheet is placed back on the conveying mechanism 22. After the detection by the upper visual detector 23, the sheet can be continuously conveyed to the next station. Specifically, the conveying mechanism 22 can be composed of two conveyor belts, which are arranged at an interval to form a detection passage 25 for the lower visual detector 24. Fig.10As shown, the actual sheet material can also be inspected by the lower visual detector 24 when it moves between the two conveyor belts, but in order to avoid being blocked by the conveyor belt, the present embodiment is provided with a double-station material taking mechanism. When the sheet material moves close to the detection aisle 25, the double-station material taking mechanism lifts the sheet material so that the sheet material has a certain distance from the surface of the conveyor belt, thereby increasing the detection angle of the lower visual detector 24 and performing scanning and detection work more accurately. Here, the double-station material taking mechanism only needs to lift the sheet material before the sheet material passes through the detection channel, and does not require accurate sensing data, so it does not increase the control difficulty of the control system. After the sheet material completely passes through the detection channel, the double-station material taking mechanism places the sheet material on the conveying mechanism 22, and the conveying mechanism 22 continues to convey the sheet material. When passing under the upper visual detector 23, the upper visual detector 23 can perform scanning and detection work on the upper surface of the sheet material, without the need to perform other actions on the sheet material, that is, the sheet material can perform upper surface detection work in the process of moving to the next station, effectively improving the detection and production work of the sheet material.

[0073] In order to make the detection of the upper visual detector 23 and the lower visual detector 24 more accurate, the detection mechanism of this embodiment is further provided with an illumination component, such as Fig. 9 and Fig.10 As shown, the lighting assembly includes an angle adjustment bracket and a light source 26, the angle adjustment bracket is installed on the frame 01, and the angle adjustment bracket is used to adjust the lighting angle of the light source 26; optionally, the angle adjustment bracket includes a fixing member 27 and an adjusting member 28, the fixing member 27 is installed on the bracket, the fixing member 27 is provided with an arc hole 29, one end of the adjusting member 28 is fixed to the light source 26, and the other end of the adjusting member 28 is provided with a connecting hole 210, and the connecting hole 210 is locked at different positions of the arc hole 29 by screws to change the installation angle between the adjusting member 28 and the fixing member 27.

[0074] Specifically, Fig.10As shown, both ends of the light source 26 are locked with the adjusting member 28 by screws and other parts, one end of the fixing member 27 is locked on the frame 01 by screws and other parts, the other end of the fixing member 27 is provided with a docking hole, and the adjusting member 28 is provided with a connecting hole 210, and the number of the connecting holes 210 is two, one of which is connected to the docking hole by screws and other common parts, and the other is connected to the arc hole 29. Therefore, when the angle of the light source 26 is to be adjusted, it is only necessary to untie the connection between the other connecting hole 210 and the arc hole 29, rotate the adjusting member 28 to the target position with the docking hole as the center, and then lock the corresponding positions of the connecting hole 210 and the arc hole 29 by screws, and the adjusting member 28 drives the light source 26 to rotate, thereby achieving the purpose of adjusting the angle. In this embodiment, first, the light source 26 can be used to increase the illumination for the upper visual detector 23 and the lower visual detector 24, to ensure sufficient light and improve the detection accuracy; second, the lighting angle of the light source 26 can be adjusted by the angle adjustment bracket, which can meet different lighting needs and has higher flexibility.

[0075] like Figure 7 , Figure 8 , Figures 10 to 13 As shown, the double-station material picking mechanism provided in this embodiment includes an x-drive unit, two groups of material picking components and two guide rails 211. The material picking components include a material picking unit 212, a y-drive unit 213 and a z-drive unit 214. The guide rail 211 is installed on the frame 01 and is located above the conveying mechanism 22. The x-drive unit is used to drive the material picking unit 212 to move along the guide rail 211, the y-drive unit 213 is used to drive the material picking unit 212 to move up and down, and the z-drive unit 214 is used to drive the material picking unit 212 to move radially along the guide rail 211. The material picking unit 212 is used to drive the sheet material to move so that the visual detector can detect the sheet material.

[0076] Specifically, Fig.10 Two sets of material picking units 212 are provided to improve production efficiency. When one material picking unit 212 is driving the sheet material for inspection, the other material picking unit 212 can be moved to the front end to pick up the material. When the inspection of the previous sheet material is completed, the inspection of the next sheet material can be continued to maintain uninterrupted inspection, thereby improving the inspection efficiency.

[0077] The x driving unit, the y driving unit 213 and the z driving unit 214 control the moving route of the material taking unit 212 from three directions respectively to prevent the two material taking units 212 from affecting each other. Fig.11As shown, the x drive unit includes an x ​​slide 215 and an x ​​driver 216, the x slide 215 is slidably mounted on the guide rail 211, and the x driver 216 is used to drive the x slide 215 to move on the guide rail 211, the y drive unit 213 is mounted on the x slide 215, and the z drive unit 214 is mounted on the y drive unit 213; the y drive unit 213 includes a y slide 217, a y slide 218 and a y driver 219, the y slide 217 is mounted on the x drive unit, and the y slide 218 is slidably mounted The y slide rail 217 is arranged perpendicular to the guide rail 211, and the y driver 219 is used to drive the y slide 218 to move on the y slide rail 217; the z drive unit 214 includes a z slide rail 220, a z slide 221 and a z driver 222, the z slide rail 220 is installed on the y drive unit 213, the material taking unit 212 is installed on the z slide 221, the z slide 221 is slidably installed on the z slide rail 220, and the z driver 222 is used to drive the z slide 221 to move on the z slide rail 220. Among them, the x driver 216, the y driver 219 and the z driver 222 are all existing technologies, such as screw drive, synchronous belt transmission, cylinder drive, etc., which will not be repeated here.

[0078] Specifically, the rack 01 is equipped with a fixing frame 223, and two guide rails 211 are symmetrically arranged on both sides of the fixing frame 223. Fig.10In the direction shown, the x drive unit is started, and the x driver 216 works to make the x slide 215 move along the guide rail 211, and the x slide 215 drives the y drive unit 213, the z drive unit 214 and the material picking unit 212 to move along the guide rail 211 together, so as to achieve the purpose of controlling the material picking unit 212 to move along the direction of the guide rail 211; the y drive unit 213 is started, and the y driver 219 drives the y slide 218 to move up and down along the y slide rail 217, so that the y slide 218 drives the z drive unit 214 and the material picking unit 212 to move up and down, so as to achieve the purpose of lifting and lowering material picking and unloading; the z drive unit 214 is started, and the z driver 222 drives the z slide 221 to move along the z slide rail 220, thereby driving the material picking unit 212 to move along the radial direction of the guide rail 211, so as to achieve the purpose of avoiding the two material picking units 212, and the two material picking units 212 can move forward and backward to pick up and unload materials without affecting each other's action routes. Preferably, the x-driver 216 of the present embodiment adopts a servo motor to drive the x-synchronous belt 224 for transmission, and the x-slide 215 is slidably set on the guide rail 211 and is also fixed to the x-synchronous belt 224. Therefore, the movement of the x-synchronous belt 224 can drive the x-slide 215 to move on the guide rail 211. One x-synchronous belt 224 can drive two x-slides 215 to move. The x-slides 215 are set on two guide rails 211. Therefore, when one x-slide 215 moves in one direction, the other x-slide 215 will move in the opposite direction. The y-driver 219 and the z-driver 222 preferably adopt cylinders to realize the control of movement. Therefore, the present embodiment only needs to set up a servo motor to control the action of the two material-picking units 212. Compared with the prior art of controlling the operation of the two material-picking units 212 by two motors or two groups of manipulators, the present embodiment is relatively easier to control, has a simpler structure, and has higher synchronization.

[0079] like Fig.13 The material taking unit 212 of this embodiment uses a suction cup to suck the sheet material to achieve material taking and material discharge. The structure of the suction cup is prior art and will not be described in detail in this embodiment.

[0080] The detection device 04 provided in this embodiment uses a line scanning visual detector for the detection of sheet materials. It can perform detection while the sheet materials are moving forward at a uniform speed. There is no need to control the fixed-point detection of the sheet materials, thereby improving the detection efficiency and reducing the control difficulty of the control system, thereby reducing the control cost of the system. In addition, there is no need to stop the transmission of the sheet materials, so the operating speed of the production line can be kept constant, which helps to improve the overall production efficiency.

[0081] The material selection device 05 of this embodiment is as follows: Fig.15As shown, it includes a material unloading transfer mechanism 51, a good product unloading table 52 and a defective product unloading table 53. If the sheet material that has completed the inspection is a good product, the material unloading transfer mechanism 51 will move the sheet material to the good product unloading table 52. If the sheet material that has completed the inspection is a defective product, the material unloading transfer mechanism 51 will move the sheet material to the defective product unloading table 53.

[0082] Specifically, the material unloading transfer mechanism 51 includes a material unloading drive component and a material unloading and picking component, both of which are existing technologies. The material unloading drive component is driven by a motor, and the material unloading and picking component adopts a suction cup material picking method. The material unloading drive component drives the material unloading and picking component to move between the two unloading tables, so as to select the sheet materials. For example, the inspected sheet materials are moved to the good product unloading table 52 through the conveying mechanism. If they are good products, they are directly moved to the next station for cleaning and packaging. If they are defective products, the material unloading and picking component transfers the defective sheet materials to the defective product unloading table 53, and then the defective sheet materials are unloaded manually.

[0083] The working data of this embodiment are collected by the central control system and coordinated to control the operation of each device, such as through a PLC automatic control system, etc., which will not be described in detail in this embodiment.

[0084] The sheet packaging machine with dual-station identification provided in this embodiment can, firstly, improve the detection efficiency through the dual-station operation mode, and secondly, detect the sheet material through line scanning, which can not only improve the detection efficiency but also reduce the production cost, so it has high practicality.

[0085] Embodiment 2:

[0086] This embodiment provides a detection method, such as Fig.16 , including the following steps:

[0087] A. Place the sheet material on the loading station 11, adjust and limit the position of the sheet material through the plate limiting mechanism, and blow air to the sides of the stacked sheets through the blowing holes 13 to separate the sheets; wherein, there are two loading stations 11, and materials can be taken from the two loading stations 11 in turn to increase the loading speed; after the x-limiting rod 14 and the y-limiting rod 15 limit the sheet material to the set loading station 11, the blowing holes 13 set on the x-limiting rod 14 and the y-limiting rod 15 are opened accordingly, and of course, the x-limiting rod 14 and the y-limiting rod 15 can also be moved to the right position. When the blowing hole 13 is opened, there is no restriction here. Due to the stacking of sheets, adjacent sheets may be adhered together due to static electricity. If the sheets are adhered during transfer, the detection will be missed, which is not conducive to improving the production yield of the sheets. Therefore, the blowing hole 13 blows air to the side of the sheet to reduce the generation of static electricity. At the same time, the brush assembly 119 is fixed to the x limit rod 14 and the y limit rod 15. The brush assembly 119 scrapes the side of the sheet to separate the sheets, thereby ensuring the single transfer and detection of the sheets.

[0088] B. The sheet material of the loading station 11 is transferred to the weighing platform 32 for weighing via the weighing transfer mechanism 31; if the weighing is qualified, it is transferred to the conveying mechanism 22 of the detection device 04 by the weighing transfer mechanism 31; wherein, the weighing transfer mechanism 31 is preferably provided with two groups, and the suction cup material picking method is also adopted, wherein one weighing transfer mechanism 31 transfers the sheet material of the loading station 11 to the weighing platform 32, and the other weighing transfer mechanism 31 transfers the weighed sheet material to the conveying mechanism 22; the weighing platform 32 is provided with a corresponding weighing sensor, and the weight of the corresponding single sheet material is set, and the weighing transfer mechanism 31 places the sheet material on the weighing platform 32, and if it meets the weight of the single sheet material, it is transferred to the conveying mechanism 22 of the detection device 04;

[0089] C. The conveying mechanism 22 conveys the sheet material. When the sheet material approaches the lower visual detector 24, the double-station material taking mechanism sucks up the sheet material, allowing the sheet material to pass through the detection aisle 25 at a uniform speed. The lower visual detector 24 performs a line scan detection on the bottom surface of the sheet material.

[0090] D. After the lower visual detector 24 completes the inspection, the double-station material-picking mechanism places the sheet back to the conveying mechanism 22, and the conveying mechanism 22 continues to convey the sheet so that the sheet passes under the upper visual detector 23 at a uniform speed, and the upper visual detector 23 performs line scanning inspection on the top surface of the sheet; wherein, the upper visual detector 23 and the lower visual detector 24 are respectively arranged at the upper and lower parts of the conveying mechanism 22, and when the sheet approaches the inspection aisle 25, the sheet is picked up by the double-station material-picking mechanism so that the sheet maintains a certain distance from the surface of the conveying mechanism 22, and the double-station material-picking mechanism continues to drive the sheet forward through the inspection aisle 25 at a uniform speed, and the lower visual detector 24 located below the inspection aisle 25 performs line scanning inspection during the movement of the sheet, and when the sheet has completely passed through the inspection aisle 25, the double-station material-picking mechanism will The sheet material is placed back on the conveying mechanism 22, and the conveying mechanism 22 continues to drive the sheet material forward at a uniform speed. When the sheet material passes through the upper visual detector 23, the upper visual detector 23 can perform line scanning detection on the top surface of the sheet material. After the scanning, the sheet material continues to be transmitted to the bottom of the material selection and loading device. The good material unloading platform 52 is connected to the conveying mechanism to facilitate the continuous transmission of the sheet material. During the detection process, the conveying mechanism 22 and the double-station material picking mechanism both keep controlling the sheet material to move at a uniform speed to ensure that the sheet material can be accurately detected by line scanning. Moreover, the two groups of material picking units included in the double-station material picking assembly can flexibly avoid positions under the drive of the x-drive unit, the y-drive unit and the z-drive unit to ensure that the two material picking units can smoothly pick up and discharge materials. The two material picking units can operate at the same time, which can also further improve work efficiency.

[0091] E. The sheet material that has completed the inspection of the upper visual detector 23 is further conveyed by the conveying mechanism 22 to the material unloading and selecting device 05. According to the inspection results of the upper visual detector 23 and the lower visual detector 24, if it is a good product, it will continue to be transferred by the conveying mechanism 22 to the next station for packaging. If it is a defective product, the unloading transfer mechanism 51 will transfer the defective sheet material to the defective product unloading table 53; wherein, the unloading transfer mechanism 51 adopts a suction cup material picking and motor-driven movement method. When the sheet material inspection result is a good product, it is conveyed by the conveying mechanism 22 to the good product unloading table 52 and continued to be conveyed to the cleaning and packaging device of the next station. If the inspection result is a defective product, the unloading transfer mechanism 51 will suck up the defective sheet material and transfer it to the defective product unloading table 53, and unloading can be done manually or by other means.

[0092] The present embodiment can efficiently carry out sheet material inspection work, such as the two loading stations 11 provided in the loading device 02 and the two weighing transfer mechanisms 31 provided in the weighing device 03 can simultaneously carry out loading and material transfer, and the double-station material picking mechanism of the detection device 04 can simultaneously carry out material picking and detection work, thereby greatly improving work efficiency; furthermore, the accuracy of detection can be improved, the limiting effect of the adjustable limiting member of the loading device 02, the blowing of the blowing hole 13 and the scraping effect of the brush assembly 119 can all reduce the static electricity between the sheets and separate the sheets, ensuring that a single sheet can be moved, reducing the omission rate of detection, and further ensuring the single detection of the sheet through weighing, and then through the line scanning detection effect of the upper visual detector 23 and the lower visual detector 24, the accuracy and efficiency of detection are improved, so that the present embodiment has high practicality.

[0093] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention is disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments according to the technology of the present invention are within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.

Claims

1. A double-station mobile sheet material detection device, comprising a frame, characterized in that: It also includes a loading device, a weighing device, a detection device, a material selection device and a cleaning and packaging device, all of which are arranged on the frame; The feeding device is used to transfer the sheet material to be processed to the weighing device; The weighing device is used to detect the weight of the sheet material to be processed, and determine whether it is the weight of a single sheet material. When it is determined to be the weight of a single sheet material, the sheet material is transmitted to the detection device; The detection device includes a double-station material taking mechanism, a detection mechanism and a conveying mechanism, all of which are installed on the frame. The conveying mechanism is used to convey the sheet material. The detection mechanism includes an upper visual detector and a lower visual detector. Both the upper visual detector and the lower visual detector are line scanning cameras. The upper visual detector is located above the sheet material, and the lower visual detector is located below the sheet material; the double-station material-picking mechanism is used to drive the sheet material to move so that the lower visual detector detects the bottom surface of the sheet material; the conveying mechanism drives the sheet material to move so that the upper visual detector detects the top surface of the sheet material; The blanking and selecting device is used to select good or bad sheets inspected by the inspection device, and to transfer the good sheets to the cleaning and packaging device; The cleaning and packaging device cleans and packages the qualified sheets.

2. According to claim 1, a dual-station mobile sheet material detection device is characterized in that: The conveying mechanism is provided with an inspection aisle, and the inspection viewing angle of the lower visual detector is located below the inspection aisle. When the sheet material passes through the inspection aisle, the lower visual detector is used to inspect the bottom surface of the sheet material.

3. According to claim 1, a dual-station mobile sheet material detection device is characterized in that: The detection mechanism also includes a lighting assembly, which is used to provide lighting for the visual detector during the detection process; The lighting assembly includes an angle adjustment bracket and a light source, and the angle adjustment bracket includes a fixing part and an adjusting part. The fixing part is installed on the bracket, and an arc hole is formed on the fixing part. One end of the adjusting part is fixed to the light source, and a connecting hole is formed on the other end of the adjusting part. The connecting hole is locked at different positions of the arc hole by screws to change the installation angle between the adjusting part and the fixing part.

4. According to claim 1, a dual-station mobile sheet material detection device is characterized in that: The double-station material picking mechanism includes an x-drive unit, two sets of material picking components and two guide rails. The material picking components include a material picking unit, a y-drive unit and a z-drive unit. The guide rails are installed on the frame and located above the conveying mechanism. The x-drive unit is used to drive the material picking unit to move along the guide rails. The y-drive unit is used to drive the material picking unit to move up and down. The z-drive unit is used to drive the material picking unit to move radially along the guide rails. The material picking unit is used to drive the sheet material to move so that the visual detector can detect the sheet material.

5. The double-station movable sheet material detection device according to claim 1, characterized in that: The x driving unit comprises an x ​​slide and an x ​​driver, the x slide is slidably mounted on the guide rail, the x driver is used to drive the x slide to move on the guide rail, the y driving unit is mounted on the x slide, and the z driving unit is mounted on the y driving unit; The y driving unit comprises a y slide rail, a y slide seat and a y driver, wherein the y slide rail is mounted on the x driving unit, the y slide seat is slidably mounted on the y slide rail, the y slide rail is arranged perpendicular to the guide rail, and the y driver is used to drive the y slide seat to move on the y slide rail; The z driving unit comprises a z slide rail, a z slide seat and a z driver, the z slide rail is mounted on the y driving unit, the material picking unit is mounted on the z slide seat, the z slide seat is slidably mounted on the z slide rail, and the z driver is used to drive the z slide seat to move on the z slide rail.

6. The double-station movable sheet material detection device according to claim 1, characterized in that: The loading device includes two loading stations and a plate limiting mechanism. The loading station is used to place the plate to be processed. The plate limiting mechanism includes an adjustable limiting member and a position adjustment component. The loading station is provided with a plurality of limiting holes. The limiting holes are provided with the adjustable limiting members. The position adjustment component is used to control the position of the adjustable limiting member in the limiting hole. The adjustable limiting member is used to limit the position of the plate in the loading station. The adjustable limiting member is provided with a blowing hole, which is connected to an external blowing structure and faces the plate.

7. The double-station movable sheet material detection device according to claim 6, characterized in that: The position adjustment assembly is located below the loading station, and includes a synchronization unit, a slider and a track. The slider is installed on the track. The synchronization unit is used to drive the slider to slide on the track, and the slider is used to drive the adjustable limiter to move. The position adjustment assembly also includes a mounting block, the adjustable limiter is assembled on the mounting block, two mounting blocks are provided and are respectively mounted on different sliders, and the spacing between different adjustable limiters is adjusted by adjusting the spacing between the two mounting blocks through a synchronization unit.

8. The double-station movable sheet material detection device according to claim 7, characterized in that: The synchronization unit includes a synchronization belt, a first driver and a synchronization block. The mounting block is equipped with the synchronization block, and the synchronization block is installed on the synchronization belt. The first driver is used to drive the synchronization belt to rotate, and the synchronization belt makes the two synchronization blocks approach each other or move away from each other.

9. The double-station movable sheet material detection device according to claim 1, characterized in that: The weighing device includes a weighing transfer mechanism and a weighing platform. The weighing transfer mechanism is used to move the sheet material of the feeding device to the weighing platform, and the weighing platform performs weight detection. If the weight is qualified, the weighing transfer mechanism transfers the weighed sheet material to the detection device.

10. A detection method for a double-station movable sheet material detection device, applied to the double-station movable sheet material detection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: A. Place the sheet material on the loading station, adjust the position of the sheet material through the plate limiting mechanism, and blow air to the sides of the stacked sheets through the blowing holes to separate the sheets; B. The sheet metal at the loading station is transferred to the weighing platform for weighing via the weighing transfer mechanism; if the weighing is qualified, it is transferred to the transmission mechanism of the detection device by the weighing transfer mechanism; C. The conveying mechanism conveys the sheet material. When the sheet material approaches the lower visual detector, the double-station material taking mechanism sucks up the sheet material, allowing the sheet material to pass through the detection channel at a uniform speed. The lower visual detector performs a line scan detection on the bottom surface of the sheet material. D. After the lower visual detector completes the inspection, the double-station material-taking mechanism places the sheet back to the conveying mechanism, which continues to convey the sheet so that the sheet passes under the upper visual detector at a uniform speed. The upper visual detector performs a line scan inspection on the top surface of the sheet; E. The sheet material that has completed the inspection of the upper visual detector is further conveyed by the conveying mechanism to the material unloading and sorting device. According to the inspection results of the upper visual detector and the lower visual detector, if it is a good product, it will continue to be transferred by the conveying mechanism to the next station for cleaning and packaging. If it is a defective product, the unloading transfer mechanism will transfer the defective sheet material to the defective product unloading table.

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