Visual identification mistake proofing device for box cover

Abstract

The utility model relates to the technical field of automobile part identification, in particular to a box cover visual identification mistake proofing device which comprises a body-in-white conveying line, a first visual identification unit, a second visual identification unit and a computer. The first visual identification unit and the second visual identification unit are respectively arranged on the body-in-white conveying line and are electrically connected with the computer, and the first visual identification unit corresponds to the first identification area and is used for identifying the model of the body-in-white in the first identification area; and the second visual identification unit corresponds to the second identification area and is used for identifying the type of the box cover in the second identification area. According to the utility model, the first visual identification unit and the second visual identification unit are used for identifying the model of the body-in-white and the model of the box cover respectively, and the computer is used for comparing whether the two models are matched, so that the box cover is prevented from being mistakenly assembled, and the operation efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts identification, and more specifically to a box cover visual identification error prevention device. Background Art

[0002] With the development trend of automobile diversification, pure electric vehicles, hybrid vehicles, plug-in hybrid vehicles and traditional fuel vehicles have emerged, resulting in the same series of models having a variety of different power. The appearance of the fuel tank cap and the battery cover of the same series of models is exactly the same, only the inner panels of the fuel tank cap and the battery cover are slightly different. When vehicles of different models share the same production line, due to the differences in parts, such as the battery cover has electrical components to detect and control the opening / closing structure of the battery cover (holes or buckles), and the fuel tank cap only has a simple mechanical snap ring, there are no obvious feature points between the two. When no auxiliary identification equipment is used and the staff relies on visual confirmation of the consistency of the fuel tank cap / battery cover and the white body model, it is not easy to find the difference between the battery cover and the fuel tank cap, which makes it easy to install the battery cover / fuel tank cap incorrectly on the white body, resulting in quality problems of incorrect installation.

[0003] The current differentiation method adopted in China is to distinguish by the color of the packaging boxes. Different colored packaging corresponds to the fuel tank cap and battery box cap of different models to ensure the consistency of the fuel tank cap / battery box cap with the body-in-white model. However, using packaging color to distinguish the fuel tank cap and battery box cap has poor flexibility. When installing a plug-in hybrid model, both the fuel tank cap and the battery box cap are installed. At this time, it is easy for the fuel tank cap and the battery box cap to be mixed or installed incorrectly on the body-in-white.

[0004] Prior art Chinese patent CN202221667544.X discloses a fixture for identifying automotive parts, comprising a bracket with a storage slot at its lower end. Two symmetrically arranged movable plates are slidably connected to the inner wall of the storage slot. A bidirectional screw is disposed between the two movable plates. The two ends of the bidirectional screw extend through the two movable plates and are rotatably connected to the inner wall of the storage slot. The bidirectional screw and the movable plates are threaded together. A gear is fixedly sleeved on the bidirectional screw, located between the two movable plates. A lifting plate is disposed within the storage slot. A rack meshing with the gear is fixedly connected to the side wall of the lifting plate. A slot corresponding to the lifting plate is disposed at the inner top of the storage slot, and the upper end of the lifting plate slides into the slot. This technical solution, through the provision of an adjustment and drive mechanism, allows the fixture to be adjusted from small to large according to the size of the part, resulting in strong adjustability and a wide range of applications. However, this technical solution requires manual adjustment and matching, which is cumbersome and inefficient. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiency of the prior art that the fixtures need to be manually adjusted and matched, and to propose a box cover visual recognition error-proofing device, which can automatically identify the white body and the box cover model and determine whether the two match, with high detection efficiency.

[0006] To achieve the above-mentioned purpose, a box cover visual recognition error prevention device is provided, comprising a body-in-white conveyor line, a first visual recognition unit, a second visual recognition unit and a computer, the body-in-white conveyor line having a first recognition area and a second recognition area, the first visual recognition unit and the second visual recognition unit being respectively arranged on the body-in-white conveyor line and electrically connected to the computer, the first visual recognition unit corresponding to the first recognition area and being used to identify the body-in-white model within the first recognition area, the second visual recognition unit corresponding to the second recognition area and being used to identify the box cover model within the second recognition area, thereby improving on-site operation efficiency.

[0007] In this technical solution, multiple white body bodies move on the white body conveyor line. When a white body body is transported to the first identification area, the first visual recognition unit works and identifies the model of the white body body. Then the staff places the box cover to be assembled in the second identification area. At this time, the second visual recognition unit identifies the model of the box cover. The first visual recognition unit and the second visual recognition unit send the recognition results to the computer at the same time. After comparison, the computer can determine whether the box cover matches the white body. The detection efficiency is high, and it can avoid the situation where the box cover is incorrectly installed due to errors in manual identification.

[0008] As a preferred solution, in order to fix the first visual recognition unit, it also includes a first hanger suspended above the body-in-white conveyor line, the first recognition area is arranged below the first hanger, a first guide rail is provided on the first hanger, and a second guide rail is slidably connected to the first guide rail. The first guide rail and the second guide rail are vertically arranged and fixed by fasteners. The first visual recognition unit is slidably connected to the second guide rail and fixed by fasteners. The first visual recognition unit is fixed by suspending the first hanger, which has high space utilization and can avoid interfering with the operation of the body-in-white conveyor line. The suspension method can enable the first visual recognition unit to identify the body-in-white from a bird's-eye view, and the recognition viewing angle is wider and more accurate. By sliding and adjusting the second guide rail on the first guide rail and adjusting the first visual recognition unit on the second guide rail, the recognition viewing angle of the first visual recognition unit can be adjusted to adapt to different series of body-in-white.

[0009] As a preferred solution, in order to sense that the body-in-white enters the first identification area, the first visual identification unit is connected to a first sensing switch corresponding to the position of the first identification area. The first sensing switch is linked to the first visual identification unit. When the first sensing switch senses that the body-in-white enters the first identification area, the first visual identification unit starts working, which can save energy consumption when the body-in-white conveyor line is in idle state.

[0010] As a preferred solution, in order to fix the second visual recognition unit, a storage box is installed on the body-in-white conveyor line, a mounting bracket is fixed on the top of the storage box, a horizontal third guide rail is provided on the mounting bracket, the second visual recognition unit is slidably connected to the bottom of the third guide rail and fixed by fasteners, the second recognition area is located on the top end face of the storage box, the storage box can be used to place the box lid to be installed, the position of the second visual recognition unit is adjusted by sliding on the third guide rail to align with the third recognition area, the second visual recognition unit recognizes the box lid in the second recognition area from a bird's-eye view, before assembling the box lid, the staff only needs to place the box lid in the second recognition area, and the matching result can be obtained by the computer.

[0011] As a preferred solution, in order to prevent the box cover to be installed from falling, the top end surface of the storage box is provided with a panel for placing the box cover to be installed.

[0012] As a preferred solution, a tray corresponding to the position of the second identification area is provided in the panel. In order to avoid the staff from tediously taking the box covers one by one from the storage box, multiple box covers to be installed can be placed on the panel at the same time. During identification, only one of the box covers needs to be placed in the tray.

[0013] As a preferred solution, in order to sense whether there is a box cover to be loaded in the pallet, a second sensing switch connected to the second visual recognition unit is embedded in the bottom of the pallet. When the second sensing switch senses that there is a box cover in the second recognition area, the second visual recognition unit performs recognition.

[0014] As a preferred solution, in order to remind the staff in time, the computer is electrically connected to a buzzer. When the identified box cover does not match the body-in-white, the buzzer can sound an alarm, thereby further preventing the staff from installing it incorrectly.

[0015] As a preferred solution, in order to increase the ambient brightness of the first recognition area and the second recognition area to improve the recognition accuracy, two light sources corresponding to the first recognition area and the second recognition area are installed on the body-in-white conveyor line.

[0016] As a preferred solution, in order to facilitate staff to observe the matching results, a display electrically connected to the computer is provided on the body-in-white conveyor line.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The present invention uses the first and second visual recognition units to identify the body-in-white model and the trunk lid model respectively, and then uses a computer to compare to determine whether they match, which can avoid incorrect installation of the trunk lid and improve on-site operation efficiency.

[0019] 2. The utility model sets a first recognition area and a second recognition area on the body-in-white conveyor line to correspond to the body-in-white and the box cover for one-to-one comparison, thereby completing the anti-error recognition of the box cover during conveyance, and achieving high work efficiency.

[0020] 3. The first and second visual recognition units are respectively controlled by the first and second induction switches to avoid invalid recognition during the idle period of transportation and save energy.

[0021] 4. By setting a buzzer and display electrically connected to the computer, the staff can get the matching results of the box cover and the white body in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of the box cover visual recognition error-proofing device of the utility model;

[0023] Figure 2 is a schematic diagram of the installation of the first visual identification unit;

[0024] Figure 3 This is a schematic diagram of the installation of the second visual recognition unit.

[0025] In the figure: body-in-white conveyor line 1; ceiling frame 11; first visual recognition unit 2; second visual recognition unit 3; first recognition area 4; second recognition area 5; first suspension rod 6; first guide rail 61; second guide rail 62; first induction switch 63; storage box 7; mounting frame 71; third guide rail 72; panel 73; tray 74; second induction switch 75; display 8; second suspension rod 81; light source 9. DETAILED DESCRIPTION

[0026] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0027] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0029] Example 1:

[0030] like Figures 1 to 3 As shown, this embodiment provides a box cover visual recognition error prevention device, including a body-in-white conveyor line 1, a first visual recognition unit 2, a second visual recognition unit 3 and a computer, the body-in-white conveyor line 1 has a first recognition area 4 and a second recognition area 5, the first visual recognition unit 2 and the second visual recognition unit 3 are respectively arranged on the body-in-white conveyor line 1 and are electrically connected to the computer, the first visual recognition unit 2 corresponds to the first recognition area 4 and is used to identify the body-in-white model in the first recognition area 4, the second visual recognition unit 3 corresponds to the second recognition area 5 and is used to identify the box cover model in the second recognition area 5.

[0031] In this embodiment, the identified box covers include fuel tank covers and electrical box covers, and the computer stores a database of various box covers and a database of white body, wherein the first visual recognition unit 2 and the second visual recognition unit 3 have the same structure and include the following modules: image acquisition module: responsible for acquiring image and video data and converting them into digital signals, including hardware devices such as cameras, lenses, light sources, and digital signal processing equipment such as acquisition cards and interface cards; image preprocessing module: preprocessing the collected image data to improve image quality and recognition rate, and the preprocessing includes algorithms such as image enhancement, filtering, denoising, and edge detection; feature extraction module: extracting effective feature information from the preprocessed image data for subsequent image recognition and classification; the feature extraction module includes algorithms such as local binary pattern (LBP), histogram of oriented gradients (HOG), and convolutional neural network (CNN); image recognition module: responsible for classifying and identifying the extracted feature information; this includes algorithms such as support vector machine (SVM), artificial neural network (ANN), and convolutional neural network (CNN).

[0032] In this embodiment, the visual recognition method has strong adaptability and can be applied to the consistency judgment of parts of different shapes and films of different specifications in various models. It has a high ability to ensure process consistency and also improves the ability to ensure part quality.

[0033] Specifically, such as Figure 1 、 2 As shown, it also includes a first hanger 6 suspended above the body-in-white conveyor line 1, the first identification area 4 is arranged below the first hanger 6, the first hanger 6 is provided with a first guide rail 61, and the first guide rail 61 is slidably connected to the second guide rail 62, the first guide rail 61 and the second guide rail 62 are vertically arranged and fixed by fasteners, and the first visual identification unit 2 is slidably connected to the second guide rail 62 and fixed by fasteners.

[0034] In this embodiment, a ceiling frame 11 is suspended directly above the body-in-white conveyor line 1, and the first hanger 6 is suspended on the ceiling frame 11. The vertical and horizontal positions of the first visual recognition unit 2 can be adjusted by using the first guide rail 61 and the second guide rail 62 to adapt to different vehicle models, with strong adaptability.

[0035] Specifically, such as Figure 1 、 3 As shown, a storage box 7 is installed on the body-in-white conveyor line 1, a mounting bracket 71 is fixed on the top of the storage box 7, a horizontal third guide rail 72 is provided on the mounting bracket 71, the second visual recognition unit 3 is slidably connected to the bottom of the third guide rail 72 and fixed by fasteners, and the second recognition area 5 is located on the top end surface of the storage box 7.

[0036] In this embodiment, the storage box 7 is installed on one side of the body-in-white conveyor line 1 , and the third guide rail 72 can be used to adjust the horizontal position of the second visual recognition unit 3 to align with the second recognition area 5 below.

[0037] Specifically, the top end surface of the storage box 7 is provided with a panel 73 for placing the cover to be loaded.

[0038] In this embodiment, the panel 73 can surround a plurality of box covers to be installed to prevent them from falling.

[0039] Specifically, a tray 74 corresponding to the position of the second identification area 5 is provided in the panel 73 .

[0040] In this embodiment, the tray 74 can be used to place a box cover to be identified. A sponge pad is also provided in the tray 74 to further protect the box cover.

[0041] Specifically, two light sources 9 corresponding to the first recognition area 4 and the second recognition area 5 are installed on the BIW conveyor line 1 .

[0042] In this embodiment, light sources 9 are installed on the first guide rail 61 and the third guide rail 72 respectively. The light sources 9 increase the ambient brightness and ensure the success rate of recognition by the first visual recognition unit 2 and the second visual recognition unit 3 .

[0043] Example 2:

[0044] This embodiment is similar to embodiment 1, except that, in this embodiment, specifically, Figure 2 As shown, the first visual recognition unit 2 is connected to a first sensing switch 63 corresponding to the position of the first recognition area 4.

[0045] Specifically, such as Figure 3 As shown, a second induction switch 75 connected to the second visual recognition unit 3 is embedded at the bottom of the tray 74 .

[0046] In this embodiment, the first sensing switch 63 is a proximity switch for controlling the opening of the first visual recognition unit 2 , and the first sensing switch 63 is a photoelectric sensor for controlling the opening of the second visual recognition unit 3 .

[0047] Example 3:

[0048] This embodiment is similar to embodiment 1, except that, in this embodiment, Figure 1 As shown, the body-in-white conveyor line 1 is provided with a display 8 electrically connected to the computer.

[0049] In this embodiment, a second suspension rod 81 is further suspended on the ceiling frame 11 , and a display 8 is fixed on the second suspension rod 81 . The display 8 is used to display the respective models of the box cover and the body-in-white and the pairing result between the two.

[0050] Specifically, the computer is also electrically connected to a buzzer for alarm, which is not shown in the figure. The buzzer can sound an alarm when the box cover and the body-in-white do not match.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0052] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A box cover visual recognition error-proofing device, characterized in that: The invention comprises a body-in-white conveyor line (1), a first visual recognition unit (2), a second visual recognition unit (3) and a computer, wherein the body-in-white conveyor line (1) is provided with a first recognition area (4) and a second recognition area (5), the first visual recognition unit (2) and the second visual recognition unit (3) are respectively arranged on the body-in-white conveyor line (1) and electrically connected to the computer, the first visual recognition unit (2) corresponds to the first recognition area (4) and is used to recognize the body-in-white model in the first recognition area (4), and the second visual recognition unit (3) corresponds to the second recognition area (5) and is used to recognize the box cover model in the second recognition area (5).

2. A box cover visual recognition error-proofing device according to claim 1, characterized in that: The system further comprises a first suspension rod (6) suspended above the body-in-white conveyor line (1), the first identification area (4) being arranged below the first suspension rod (6), a first guide rail (61) being provided on the first suspension rod (6), a second guide rail (62) being slidably connected to the first guide rail (61), the first guide rail (61) and the second guide rail (62) being arranged vertically and fixed by fasteners, and the first visual identification unit (2) being slidably connected to the second guide rail (62) and fixed by fasteners.

3. A box cover visual recognition error-proofing device according to claim 2, characterized in that: The first visual recognition unit (2) is connected to a first induction switch (63) corresponding to the position of the first recognition area (4).

4. The box cover visual recognition error-proofing device according to claim 1, characterized in that: A storage box (7) is installed on the body-in-white conveyor line (1), a mounting frame (71) is fixed on the top of the storage box (7), a horizontal third guide rail (72) is provided on the mounting frame (71), the second visual recognition unit (3) is slidably connected to the bottom of the third guide rail (72) and fixed by a fastener, and the second recognition area (5) is located on the top end surface of the storage box (7).

5. The box cover visual recognition error-proofing device according to claim 4, characterized in that: The top end surface of the storage box (7) is provided with a face plate (73) for placing the cover to be loaded.

6. The box cover visual recognition error-proofing device according to claim 5, characterized in that: A tray (74) corresponding to the position of the second identification area (5) is provided in the face plate (73).

7. The box cover visual recognition error-proofing device according to claim 6, characterized in that: A second induction switch (75) connected to the second visual recognition unit (3) is embedded in the bottom of the tray (74).

8. The box cover visual recognition error-proofing device according to claim 1, characterized in that: The computer is electrically connected to a buzzer for alarming.

9. The box cover visual recognition error-proofing device according to claim 1, characterized in that: Two light sources (9) corresponding to the first recognition area (4) and the second recognition area (5) are installed on the body-in-white conveyor line (1).

10. The box cover visual recognition error-proofing device according to claim 1, characterized in that: The body-in-white conveyor line (1) is provided with a display (8) electrically connected to the computer.

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