Visual identification system for identifying whether tray positioning pins are correctly switched

Abstract

The utility model relates to the technical field of visual identification, in particular to a visual identification system for identifying whether a pallet positioning pin is correctly switched, which comprises a control part, an alarm part, a visual identification part and a pallet transportation part, and is characterized in that the control part is respectively connected with the alarm part, the pallet transportation part and the visual identification part; the tray conveying part is located below the visual identification part, the visual identification part comprises a support, a camera and a light supplementing lamp, the camera is installed on the support, the support and the light supplementing lamp are used for being fixed to a ceiling of a workshop, the camera is a 3D structure light scanning camera, the light supplementing lamp can irradiate positioning pins on a tray to form shadows, and the tray conveying part can convey the tray to an identification position. The visual identification system can identify whether the switching of the positioning pins on the tray is correct or not through the camera instead of manual work, so that the workload of workers can be reduced, the identification accuracy can be improved, and the property loss caused by the problem that wrong switching or missing switching of the positioning pins cannot be detected is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of visual identification, more particularly to a visual identification system for identifying whether the positioning pin of a tray is switched correctly. BACKGROUND

[0002] In automobile production and manufacturing, the body and chassis are positioned by front and rear suspension trays when they are assembled. Due to the production of different models, in order to improve the utilization rate of the front and rear suspension trays, a plurality of positioning pins are designed on the tray according to the model, and different positioning pins are extended from the tray when positioning the body and chassis of different models.

[0003] In the prior art, the positioning pins are switched manually, and then the switched positioning pins are checked to check whether there are incorrectly switched or missed switched positioning pins. Manual switching not only consumes time and effort, but also may not check whether the positioning pins are incorrectly switched or missed switched. When the incorrectly switched or missed switched positioning pins are not checked, the body or chassis on the tray is easily overturned due to insufficient or misaligned support when the tray positions the body or chassis, resulting in damage and production line stoppage, causing property loss. SUMMARY

[0004] The utility model aims at overcoming the deficiency that the positioning pins on the tray are easily incorrectly switched or missed switched in the prior art, and provides a visual identification system for identifying whether the positioning pins of a tray are switched correctly. The visual identification system in the present scheme can assist in confirming whether the positioning pins are switched in place, avoiding the situation that the positioning pins on the tray are incorrectly switched or missed switched.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of:

[0006] A visual identification system for identifying whether the positioning pins of a tray are switched correctly is provided, which comprises a control part, an alarm part, a visual identification part and a tray transportation part. The alarm part, the tray transportation part and the visual identification part are connected with and controlled by the control part. The tray transportation part is located below the visual identification part. The visual identification part comprises a bracket, a camera and a fill light. The camera and the fill light are installed on the bracket. The bracket is fixed on the ceiling of a workshop. The camera is a 3D structured light scanning camera. The fill light can project the shadow of the positioning pins on the tray. The tray transportation part can transport the tray to the identification position of the camera.

[0007] The utility model discloses a visual identification system for identifying whether the tray positioning pin is switched correctly, when the system works, the control part controls the visual identification part and the tray transport part to start working, the tray transport part can send the tray model information on it to the control part, after the tray transport part transports the tray to the detection position, under the irradiation of the light supplement lamp, the positioning pin on the tray that projects from the tray surface will produce a shadow, the camera is 3D structured light scanning camera, 3D structured light scanning camera can capture the shape of the tray, the control part compares the target tray shape with the tray shape obtained by 3D structured light scanning camera according to the tray model information, when the shape is consistent, the tray transport part drives the tray to continue moving forward, and the vehicle body or chassis can be placed on the tray, when the shape is not consistent, the control part controls the alarm part to issue an alarm, the tray is checked manually for the second time, the incorrect positioning pin is restored to be correct, and after all the positioning pins on the tray are correct, the tray transport part drives the tray to continue moving forward, and the vehicle body or chassis can be placed on the tray.

[0008] The visual identification system can replace manual identification of whether the positioning pin on the tray is switched correctly, can reduce the workload of workers, can improve the identification accuracy, can avoid the problem that the positioning pin error switching or missing switching cannot be checked out, and can avoid the vehicle body or chassis on the tray from being overturned due to insufficient support or misaligned support and causing property loss.

[0009] Preferably, the bracket comprises a C-shaped frame, the top of the C-shaped frame is used to be installed on the ceiling of the workshop, and the bottom of the C-shaped frame is connected with the camera. The camera is fixed on the ceiling of the workshop through the C-shaped frame, and installation space is saved.

[0010] Preferably, the camera mounting frame comprises a first mounting plate and a second mounting plate, the first mounting plate is provided with a first waist hole and a second waist hole, the axis of the first waist hole is linear, the axis of the second waist hole is arc-shaped, the second mounting plate is provided with a third waist hole, the axis of the third waist hole is linear, the second mounting plate is further provided with a connecting portion, the connecting portion is provided with a connecting hole, the first waist hole and the connecting hole are connected through locking bolts, the camera mounting frame is fixedly connected with the bottom surface of the end portion of the C-shaped frame, and the camera can be connected with the second waist hole through a positioning bolt. Specifically, the bottom surface of the end portion of the C-shaped frame is provided with a fixing bolt that can pass through the third waist hole, and the camera can be connected with the second waist hole through a positioning bolt. Through the setting of the camera mounting frame, the positions of the locking bolts in the first waist hole, the positions of the fixing bolts in the third waist hole and the positions of the positioning bolts in the second waist hole can be adjusted, so that the camera can be finely adjusted at the end position of the C-shaped frame.

[0011] Preferably, the shortest distance between the camera and the top surface of the tray conveying part is 100-200 cm. When the shortest distance between the camera and the top surface of the tray conveying part is 100-200 cm, i.e., the distance between the camera and the tray on the tray conveying part is 100-200 cm, this range is the optimal range for 3D structured light line scanning, which can ensure the accuracy of the camera in acquiring the shape of the tray.

[0012] Preferably, the bracket further comprises a top bracket for mounting on the ceiling of the workshop, and the top bracket has two top brackets respectively located on the two sides of the C-shaped bracket, and the light supplementing lamps are linearly arranged on the top bracket along the axis direction of the top bracket. The light supplementing lamps are mounted on the ceiling of the workshop by the bracket, and the two top brackets are distributed on the two sides of the C-shaped bracket, so that the articles on the tray conveying part can be supplemented with light from both sides.

[0013] Preferably, the light supplementing lamps are rotationally connected with the top bracket. The light supplementing lamps can rotate on the top bracket, so that the angle of the light supplementing lamps can be adjusted, and all the light supplementing lamps can irradiate on the tray.

[0014] Preferably, the tray conveying part comprises an automatic conveying vehicle and a positioning base, the automatic conveying vehicle is an AGV trolley, the positioning base is located in the recognition area of the camera, the positioning base is fixed on the ground of the workshop, and the automatic conveying vehicle can travel to the positioning base. The automatic conveying vehicle can transport the tray according to a fixed track, and the camera can be controlled by the control part to scan the tray on the automatic conveying vehicle when the automatic conveying vehicle stops on the positioning base.

[0015] Preferably, the alarm part comprises a buzzer and a warning light, both the buzzer and the warning light are fixedly installed on the positioning base, and both the buzzer and the warning light are connected with the control part. The buzzer and the warning light can sound and light to alarm, which is more effective for reminding the workers.

[0016] Preferably, the automatic conveying vehicle is provided with an identification module capable of identifying the model information of the tray, and the identification module is used to send the model information of the tray to the control part. The model information of the tray in the identification module is manually input by the worker, which can increase the accuracy of the input information.

[0017] Preferably, the top surface of the automatic conveying vehicle is provided with a mounting hole, a clamping block is slidably connected in the mounting hole, the clamping block can be retracted into the automatic conveying vehicle, and the automatic conveying vehicle has four clamping blocks which are used to abut the four side surfaces of the tray, respectively. The clamping blocks on the top surface of the automatic conveying vehicle can limit the tray on the automatic conveying vehicle, so as to avoid the tray from falling off the automatic conveying vehicle during transportation. The clamping blocks can be slidably retracted into the inner cavity of the automatic conveying vehicle, so as to avoid interference between the tray and the clamping blocks during the process of transferring the tray to the automatic conveying vehicle.

[0018] Compared with the prior art, the visual identification system has the beneficial effects that:

[0019] The visual identification system can replace manual identification of whether the positioning pin on the tray is switched correctly through the camera, can reduce the workload of workers, can improve the identification accuracy, can avoid the problem that the positioning pin error switching or missed switching cannot be checked out, and can avoid the property loss caused by the accidental overturning of the vehicle body or chassis on the tray due to insufficient support or misaligned support.

[0020] The visual identification system can save the installation space of the workshop by installing the camera and the light supplement lamp on the ceiling of the workshop through the support.

[0021] The visual identification system can position the automatic transport vehicle through the positioning base, so that the automatic transport vehicle can drive the tray to a specified position to complete the identification of the positioning pin on the tray, and improve the accuracy of the tray identification on the automatic transport vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a module diagram of a visual identification system for identifying whether the positioning pin of a tray is switched correctly.

[0023] Figure 2 It is a structural schematic view of a visual identification part and a tray transport part of a visual identification system for identifying whether the positioning pin of a tray is switched correctly.

[0024] Figure 3 It is a structural schematic view of a first mounting plate and a second mounting plate of a visual identification system for identifying whether the positioning pin of a tray is switched correctly.

[0025] In the drawings: 1, control part; 2, alarm part; 3, visual identification part; 4, tray transport part; 301, camera; 302, light supplement lamp; 303, C-shaped frame; 304, top frame; 5, first mounting plate; 6, second mounting plate; 501, first waist hole; 502, second waist hole; 601, third waist hole; 602, connecting part; 401, automatic transport vehicle; 402, positioning base; 421, clamping block; 7, identification module; 8, tray. DETAILED DESCRIPTION

[0026] The utility model will be further described in connection with specific implementation. Among them, the drawings are only used for example description, and the representation is only a schematic diagram, and cannot be understood as the limitation of the patent; in order to better illustrate the embodiment of the utility model, some components of the drawings will be omitted, enlarged or reduced, and the size of the actual product is not represented; for those skilled in the art, it is understandable that some known structures and their description in the drawings can be omitted.

[0027] The same or similar reference signs in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it is understood that if the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0028] Embodiment one

[0029] The present embodiment is a first embodiment of a visual identification system for identifying whether the tray positioning pin is correctly switched, as shown in Figure 1 and Figure 2 , comprising a control part 1, an alarm part 2, a visual identification part 3 and a tray transportation part 4, the control part 1 can control the alarm part 2, the tray transportation part 4 and the visual identification part 3 to work, the alarm part 2, the tray transportation part 4 and the visual identification part 3 are all connected with the control part 1, the tray transportation part 4 is located below the visual identification part 3, the visual identification part 3 comprises a bracket, a camera 301 and a fill light 302, the camera 301 and the fill light 302 are both installed on the bracket, the bracket is used to be fixed on the ceiling of the workshop, the camera 301 is a 3D structured light scanning camera, the fill light 302 can irradiate the shadow of the positioning pin on the tray 8, and the tray transportation part 4 can transport the tray 8 to the identification position of the camera 301.

[0030] The working principle or working process of the present embodiment is as follows:

[0031] When the system is working, the control unit 1 controls the vision recognition unit 3 and the pallet transport unit 4 to start working. The pallet transport unit 4 can send the model information of the pallet 8 on it to the control unit 1. After the pallet transport unit 4 transports the pallet 8 to the detection position, under the illumination of the supplementary light 302, the positioning pins protruding from the surface of the pallet 8 will produce shadows. The camera 301 is a 3D structured light scanning camera, which can capture the shape of the pallet 8. The 3D structured light scanning camera sends the acquired shape of the pallet 8 to the control unit 1. The control unit 1 compares the shape of the target pallet 8 with the shape of the pallet 8 acquired by the 3D structured light scanning camera according to the model information of the pallet 8. When the shapes match, the pallet transport unit 4 drives the pallet 8 to continue moving forward, and the vehicle body or chassis can be placed on the pallet 8. When the shapes do not match, the control unit 1 controls the alarm unit 2 to issue an alarm, and the pallet 8 is manually checked again and the incorrect positioning pins are restored to the correct ones. After all the positioning pins on the pallet 8 are correct, the pallet transport unit 4 drives the pallet 8 to continue moving forward, and the vehicle body or chassis can be placed on the pallet 8.

[0032] The beneficial effects of this embodiment are as follows:

[0033] The visual recognition system of this embodiment can use camera 301 to replace manual identification to determine whether the switching of the positioning pins on the pallet 8 is correct. This can reduce the workload of workers, improve the accuracy of identification, and avoid the problem of not being able to detect incorrect switching or missing switching of positioning pins. It can also prevent the vehicle body or chassis located on the pallet 8 from accidentally overturning due to insufficient support or misalignment of support, which could cause property damage.

[0034] Example 2

[0035] This embodiment is a second embodiment of a visual recognition system for identifying whether pallet positioning pins have switched correctly. Figures 1-3 As shown, this embodiment further defines the structure of the visual recognition unit 3 based on Embodiment 1.

[0036] Specifically, the support includes a C-shaped frame 303 and a top frame 304. The top of the C-shaped frame 303 is used to install on the ceiling of the workshop, and the bottom of the C-shaped frame 303 is connected to the camera 301. The top frame 304 is used to install on the ceiling of the workshop. There are two top frames 304, which are located on both sides of the C-shaped frame 303. There are several fill lights 302, which are linearly arranged on the top frame 304 along the axial direction of the top frame 304. The fill lights 302 are rotatably connected to the top frame 304.

[0037] Specifically, the shortest distance between camera 301 and the top surface of pallet transport section 4 is 100cm-200cm.

[0038] Specifically, the camera mounting rack comprises a first mounting plate 5 and a second mounting plate 6, the first mounting plate 5 is provided with a first waist hole 501 and a second waist hole 502, the axis of the first waist hole 501 is linear, the axis of the second waist hole 502 is arc-shaped, the second mounting plate 6 is provided with a third waist hole 601, the axis of the third waist hole 601 is linear, the second mounting plate 6 is further provided with a connecting portion 602, the connecting portion 602 is provided with a connecting hole, the first waist hole 501 and the connecting hole are connected through a locking bolt, the bottom surface of the end portion of the C-shaped frame 303 is provided with a fixing bolt which can pass through the third waist hole 601, and the camera 301 can be connected with the second waist hole 502 through a positioning bolt.

[0039] The beneficial effects of the embodiment are as follows:

[0040] The camera 301 and the light supplement lamp 302 are fixed on the ceiling of the workshop through the C-shaped frame 303 and the top frame 304, thereby saving installation space. The best range for the camera 301 to scan is 100cm-200cm, which can ensure the accuracy of the camera 301 to obtain the shape of the tray 8. Through the setting of the camera mounting rack, the positions of the locking bolt in the first waist hole 501, the fixing bolt in the third waist hole 601 and the positioning bolt in the second waist hole 502 can be adjusted, so as to realize the purpose of fine adjustment of the position of the camera 301 at the end of the C-shaped frame 303.

[0041] Embodiment three

[0042] The embodiment is a third embodiment of a visual identification system for identifying whether the tray positioning pin is correctly switched, as shown in Figure 2 The embodiment further limits the structure of the tray transportation part 4 on the basis of the first embodiment.

[0043] Specifically, the tray transportation part 4 comprises an automatic transportation vehicle 401 and a positioning base 402, the automatic transportation vehicle 401 is an AGV trolley, the positioning base 402 is located in the identification area of the camera 301, the positioning base 402 is used to be fixed on the ground of the workshop, and the automatic transportation vehicle 401 can travel to the positioning base 402.

[0044] Specifically, the alarm part 2 comprises a buzzer and a warning light, both of which are fixedly installed on the positioning base 402 and connected with the control part 1.

[0045] Specifically, the automatic transportation vehicle 401 is provided with an identification module 7 which can identify the model information of the tray 8, and the identification module 7 is used to send the model information of the tray 8 to the control part 1.

[0046] Specifically, the top surface of the automatic transport vehicle 401 is provided with mounting holes, and clamping blocks 421 are slidably connected in the mounting holes.

[0047] The beneficial effects of the embodiment are as follows:

[0048] The sound and light alarm through the buzzer and warning light has a better reminding effect on the workers. The model information of the tray 8 in the identification control module is manually input by the workers, so that the accuracy of the input information can be increased. The clamping blocks 421 on the top surface of the automatic transport vehicle 401 can limit the tray 8 on the automatic transport vehicle 401, so as to avoid the tray 8 from falling off the automatic transport vehicle 401 during transportation. The clamping blocks 421 can be slidably retracted into the inner cavity of the automatic transport vehicle 401, so as to avoid interference between the tray 8 and the clamping blocks 421 during the process of transferring the tray 8 to the automatic transport vehicle 401.

[0049] In the specific contents of the above specific embodiments, each technical feature can be combined arbitrarily without contradiction. In order to make the description simple, all possible combinations of the above technical features are not described, but as long as the combination of the technical features does not exist contradiction, it should be considered as the scope of the present application.

[0050] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A visual identification system for identifying whether a pallet locating pin is properly switched, comprising: The application relates to a tray recognition device for a warehouse, which comprises a control unit (1), an alarm unit (2), a visual recognition unit (3) and a tray conveying unit (4), wherein the alarm unit (2), the tray conveying unit (4) and the visual recognition unit (3) are connected with the control unit (1) and controlled by the control unit (1), the tray conveying unit (4) is located below the visual recognition unit (3), the visual recognition unit (3) comprises a support, a camera (301) and a light supplement lamp (302), the camera (301) and the light supplement lamp (302) are mounted on the support, the support is used for being fixed on the ceiling of a workshop, the camera (301) is a 3D structured light line scanning camera, the light supplement lamp (302) can irradiate a shadow of a positioning pin on a tray (8), and the tray conveying unit (4) can convey the tray (8) to a recognition position of the camera (301).

2. The visual identification system for identifying whether the pallet locating pins are switched correctly according to claim 1, wherein, The support comprises a C-shaped frame (303), the top of the C-shaped frame (303) is used for being mounted on the ceiling of the workshop, and the bottom of the C-shaped frame (303) is connected with the camera (301).

3. The visual identification system for identifying whether the tray locating pin is switched correctly according to claim 2, characterized in that, The application further comprises a camera mounting frame, the camera mounting frame comprises first and second mounting plates (5, 6) perpendicular to each other, the first mounting plate (5) is provided with first and second waist holes (501, 502), the axis of the first waist hole (501) is linear, the axis of the second waist hole (502) is arc-shaped, the second mounting plate (6) is provided with a third waist hole (601), the axis of the third waist hole (601) is linear, the second mounting plate (6) is further provided with a connecting portion (602), the connecting portion (602) is provided with a connecting hole, the first waist hole (501) and the connecting hole are connected through locking bolts, the camera mounting frame is fixedly connected with the bottom surface of the end portion of the C-shaped frame (303), and the camera (301) can be connected with the second waist hole (502) through positioning bolts.

4. The visual identification system for identifying whether the tray locating pin is switched correctly according to claim 3, characterized in that, The shortest distance between the camera (301) and the top surface of the tray conveying unit (4) is 100-200 cm.

5. The visual identification system for identifying whether the pallet locating pin is properly switched according to claim 2, wherein, The support further comprises top frames (304), the top frames (304) are used for being mounted on the ceiling of the workshop, there are two top frames (304), the two top frames (304) are located on the two sides of the C-shaped frame (303), there are a plurality of light supplement lamps (302), and the plurality of light supplement lamps (302) are linearly arranged on the top frames (304) along the axis direction of the top frames (304).

6. A visual identification system for identifying whether a pallet locator pin has been properly switched as recited in claim 5, wherein, The light supplement lamps (302) are rotationally connected with the top frames (304).

7. The visual identification system for identifying whether a pallet locator pin has been properly switched of claim 1, wherein, The tray conveying unit (4) comprises an automatic conveying vehicle (401) and a positioning base (402), the automatic conveying vehicle (401) is an AGV trolley, the positioning base (402) is located in a recognition area of the camera (301), the positioning base (402) is used for being fixed on the ground of the workshop, and the automatic conveying vehicle (401) can travel to the positioning base (402).

8. The visual identification system for identifying whether a pallet locator pin has been properly switched of claim 7, wherein, The alarm part (2) includes a buzzer and a warning light, both of which are fixedly installed on the positioning base (402) and connected with the control part (1).

9. The visual identification system for identifying whether a pallet locator pin has been properly switched of claim 8, wherein, The automatic transport vehicle (401) is provided with an identification module (7) capable of identifying the model information of the tray (8), which is used to send the model information of the tray (8) to the control part (1).

10. The visual identification system for identifying whether a pallet locator pin has been properly switched of claim 8, wherein, The top surface of the automatic transport vehicle (401) is provided with mounting holes, and clamping blocks (421) are slidably connected in the mounting holes. The clamping blocks (421) can be retracted into the automatic transport vehicle (401). There are four clamping blocks (421), which are used to abut the four side surfaces of the tray (8) respectively.

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