A screen printing debris detection device

Abstract

This utility model relates to the field of glass screen printing technology and provides a screen printing fragment detection device, including a first conveyor belt and a detection mechanism. The detection mechanism is disposed on the first conveyor belt and includes a gantry frame fixedly connected above the first conveyor belt. This screen printing fragment detection device, by setting up the detection mechanism, which includes a gantry frame, has a visual inspection component installed at the center of its top. This component takes pictures of the glass sheets conveyed on the first conveyor belt. During the imaging process, front, rear, and side lights on the gantry frame light up sequentially, and an image is taken when each light illuminates. Finally, the four images are analyzed to determine whether the glass sheet has defects, ensuring the accuracy of the detection results. Simultaneously, an air nozzle is also provided to blow air onto the surface of the glass sheet, removing dust and other impurities, further improving the accuracy of the detection results.

Description

Technical Field

[0001] This utility model belongs to the field of glass screen printing technology, and in particular relates to a screen printing fragment detection device. Background Technology

[0002] During the glass processing, patterns and markings are usually printed on the glass surface. Currently, there are two methods: etching printing and screen printing. Since etching printing can easily damage the stress structure of the glass surface, screen printing is now the most common method.

[0003] To ensure product quality and extend the lifespan of the printing screen, glass breakage detection structures are currently installed in the conveying unit to inspect the glass and remove damaged glass pieces. Chinese Patent Publication No. CN 222013947 U provides a screen printing breakage detection device that can inspect the printing surface of the glass to be printed, thereby preventing glass with surface defects from being sent to the printing area for printing.

[0004] The aforementioned patent uses a visual inspection structure composed of an imaging component and a camera to inspect the transported glass sheets and remove damaged glass sheets. However, cracks or other defects on the glass sheets cannot be clearly captured under certain angles of lighting. The glass sheets need to be illuminated from multiple angles to ensure that there is no damage. Furthermore, if the surface of the glass sheet is contaminated with dust or other impurities during the transport process, it may be misjudged as cracks or damage, resulting in qualified glass being rejected and wasted. Utility Model Content

[0005] This utility model provides a screen printing fragment detection device, which aims to solve the problem that cracks or other defects on glass sheets cannot be clearly photographed under certain angles of light, and that if the surface of the glass sheet is contaminated with dust or other impurities during the transportation process, it may be misjudged as crack damage, resulting in qualified glass being rejected and wasted.

[0006] This utility model is implemented as follows: a screen printing fragment detection device includes a first conveyor belt and a detection mechanism; the detection mechanism is disposed on the first conveyor belt; the detection mechanism includes a gantry frame fixedly connected above the first conveyor belt, an installation port vertically penetrating the middle of the top of the gantry frame, a connecting seat fixedly connected inside the installation port, a visual inspection component disposed at the bottom of the connecting seat, extension plates extending outward from the front and rear sides of the middle of the top of the gantry frame fixedly connected, the outer ends of the two extension plates are bent downward, and installation holes are penetrating the bent surfaces of the two extension plates, lifting rings are fixedly connected to both ends of the top of the gantry frame, and lamps are fixedly connected inside the two lifting rings and the two installation holes, connecting members are fixedly connected to both sides of the first conveyor belt and the rear of the gantry frame, and air nozzles are fixedly connected to the inner surfaces of the two connecting members.

[0007] Preferably, a second conveyor belt with the same conveying direction and the same height as the first conveyor belt is provided at the rear of the first conveyor belt. A first end seat and a second end seat are fixedly connected to the front and rear sides of the lower surface of the second conveyor belt, respectively. Support bars are fixedly connected laterally along the length direction on both sides of the lower part of the second conveyor belt. The front ends of the two support bars are bent upward and hinged to the two first end seats, respectively. A sliding groove is opened on the front part of the outer surface of the two support bars along the length direction. A sliding rod is laterally slidably connected between the two sliding grooves. A transverse shaft is laterally rotatably connected between the two second end seats. A hinge rod is hinged between the two ends of the outer surface of the sliding rod and the two ends of the outer surface of the transverse shaft.

[0008] Preferably, a mounting plate is fixedly connected to the bottom end between the two support bars and at the front of the slide rod. A cylinder is fixedly connected laterally to the upper surface of the mounting plate. A connecting ring is fixedly connected to the rear end of the piston rod of the cylinder. The connecting ring is rotatably connected to the outer surface of the slide rod.

[0009] Preferably, multiple reinforcing frames are laterally fixedly connected to the front and bottom of the two support bars.

[0010] Preferably, a third conveyor belt with the same conveying direction and the same height as the second conveyor belt is provided at the rear of the second conveyor belt, and a fourth conveyor belt with the same conveying direction and the same height as the third conveyor belt is provided above the third conveyor belt, with the front side of the fourth conveyor belt being flush with the front end face of the third conveyor belt.

[0011] Preferably, the bottom ends of the first conveyor belt, the third conveyor belt, and the fourth conveyor belt are all fixedly connected to a support frame.

[0012] Beneficial effects Compared with the prior art, the beneficial effects of this utility model are as follows: The screen printing fragment detection device of this utility model, by setting up a detection mechanism, includes a gantry frame with a visual inspection component set at the middle of its top. The visual inspection component takes pictures of the glass pieces conveyed on the first conveyor belt. During the shooting process, the front, rear and side lights on the gantry frame will light up in sequence. Each time a light lights up, a picture is taken. Finally, the four pictures are analyzed to determine whether there are defects in the glass pieces, ensuring the accuracy of the detection results. At the same time, an air nozzle is also set up to blow air onto the surface of the glass pieces to blow away dust and other impurities, further improving the accuracy of the detection results. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the detection mechanism in this utility model; Figure 3 This is a schematic diagram of the support structure of the second conveyor belt in this utility model; Figure 4 A diagram showing the transport status of compliant glass sheets; Figure 5 This is a diagram showing the transport status of non-compliant glass sheets.

[0014] In the diagram: 1-First conveyor belt, 2-Second conveyor belt, 3-Detection mechanism, 31-Gantry frame, 32-Connecting seat, 33-Vision inspection component, 34-Extension plate, 35-Lifting ring, 36-Lighting lamp, 37-Connector, 38-Air nozzle, 4-Third conveyor belt, 5-Fourth conveyor belt, 6-Support bar, 7-First end seat, 8-Slide groove, 9-Slide rod, 10-Second end seat, 11-Horizontal shaft, 12-Hinged rod, 13-Mounting plate, 14-Cylinder, 15-Reinforcing frame. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] Please see Figure 1-5This utility model provides a technical solution: a screen printing fragment detection device, including a first conveyor belt 1 and a detection mechanism 3; the detection mechanism 3 is disposed on the first conveyor belt 1; the detection mechanism 3 includes a gantry frame 31 fixedly connected above the first conveyor belt 1, an installation port is vertically opened through the middle of the top of the gantry frame 31, a connecting seat 32 is fixedly connected inside the installation port, a visual inspection component 33 is provided at the bottom of the connecting seat 32, extension plates 34 extending outward are fixedly connected to the front and rear sides of the middle of the top of the gantry frame 31, the outer ends of the two extension plates 34 are bent downward, and the bent surfaces of the two extension plates 34 are opened through the installation holes, lifting rings 35 are fixedly connected to both ends of the top of the gantry frame 31, and light lamps 36 are fixedly connected inside the two lifting rings 35 and the two installation holes, and connecting pieces 37 are fixedly connected to both sides of the first conveyor belt 1 and the rear of the gantry frame 31, and air nozzles 38 are fixedly connected to the inner surfaces of the two connecting pieces 37.

[0017] In this embodiment, the device transports glass sheets via a first conveyor belt 1. During transport, a vision inspection component 33 inspects the glass sheets. Four illumination lamps 36 mounted on the front, back, and sides of the gantry 31 light up sequentially. Each time the lamps light up, the vision inspection component 33 takes a picture. Illuminating the glass sheets from multiple angles allows cracks in any direction to be clearly visible, ensuring the accuracy of defect detection. Additionally, air nozzles 38 are installed on both sides of the first conveyor belt 1. These nozzles are connected to an air pump or similar structure via pipes. By pumping air into the nozzles 38, air is blown onto the surface of the glass sheets, removing dust or other impurities and preventing the misjudgment of qualified glass sheets due to dust and impurities, thus avoiding waste.

[0018] The visual inspection component 33 includes a camera, an image acquisition module, and a processor, which are mature existing technologies and will not be described in detail here.

[0019] Furthermore, a second conveyor belt 2 with the same conveying direction and the same height as the first conveyor belt 1 is provided at the rear. The front and rear sides of the lower surface of the second conveyor belt 2 are respectively fixedly connected to the first end seat 7 and the second end seat 10. The lower sides of the second conveyor belt 2 are both fixedly connected to the support strip 6 along its length. The front ends of the two support strips 6 are bent upward and hinged to the two first end seats 7 respectively. The front of the outer surface of the two support strips 6 is provided with a groove 8 along its length. The two grooves 8 are laterally slidably connected to the slide rod 9. The two second end seats 10 are laterally rotatably connected to the horizontal shaft 11. The two ends of the outer surface of the slide rod 9 and the two ends of the outer surface of the horizontal shaft 11 are both hinged to the hinge rod 12.

[0020] A mounting plate 13 is fixedly connected to the bottom end between the two support bars 6 and to the front of the slide rod 9. A cylinder 14 is fixedly connected to the upper surface of the mounting plate 13 laterally. A connecting ring is fixedly connected to the rear end of the piston rod of the cylinder 14. The connecting ring is rotatably connected to the outer surface of the slide rod 9.

[0021] The rear of the second conveyor belt 2 is provided with a third conveyor belt 4 that is in the same direction as it and at the same height. Above the third conveyor belt 4 is a fourth conveyor belt 5 that is perpendicular to its conveying direction. The front side of the fourth conveyor belt 5 is flush with the front end face of the third conveyor belt 4.

[0022] In this embodiment, the glass sheet detected by the detection mechanism 3 is judged by the processing unit as compliant and non-compliant. When the glass sheet is compliant, the second conveyor belt 2 will maintain a horizontal state to transport the glass sheet to the third conveyor belt 4 and continue to move to the rear unit. When the glass is non-compliant, the central control unit will control the piston rod of the cylinder 14 to extend, pushing the slide rod 9 to move backward, thereby causing the rear end of the second conveyor belt 2 to tilt upward through the hinge rod 12, transporting the non-compliant glass to the fourth conveyor belt 5 and then to the glass processing unit, thereby separating the compliant and non-compliant glass.

[0023] Furthermore, multiple reinforcing brackets 15 are horizontally fixedly connected to the front and bottom of the two support bars 6.

[0024] The bottom ends of the first conveyor belt 1, the third conveyor belt 4, and the fourth conveyor belt 5 are all fixedly connected to support frames.

[0025] In this embodiment, the multiple reinforcing frames 15 can improve the structural stability between the two support bars 6, thereby enabling the second conveyor belt 2 to carry out conveying operations stably.

[0026] Multiple support frames provide support.

[0027] The working principle and usage process of this utility model are as follows: After installation, the device transports glass sheets via the first conveyor belt 1. During transport, the glass sheets are inspected by the vision inspection component 33. Four illumination lamps 36, located on the front, back, and sides of the gantry frame 31, light up sequentially. Each time the lamps light up, the vision inspection component 33 takes a picture. Illuminating the glass sheets from multiple angles allows cracks in any direction to be clearly visible, ensuring the accuracy of defect detection. Additionally, air nozzles 38 are installed on both sides of the first conveyor belt 1. These nozzles are connected to an air pump via pipes. Air is pumped into the nozzles 38 to blow air onto the surface of the glass sheets, removing dust or other impurities and preventing qualified glass sheets from being misjudged and wasted due to dust and impurities.

[0028] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A screen printing fragment detection device, characterized in that: The system includes a first conveyor belt (1) and a detection mechanism (3); the detection mechanism (3) is mounted on the first conveyor belt (1); the detection mechanism (3) includes a gantry frame (31) fixedly connected above the first conveyor belt (1), the top center of the gantry frame (31) has a vertically penetrating installation opening, the inside of the installation opening is fixedly connected to a connecting seat (32), the bottom end of the connecting seat (32) is provided with a visual inspection component (33), and the front and rear sides of the top center of the gantry frame (31) are fixedly connected to an extension extending outward from the outer end. The outer ends of the two extension plates (34) are bent downwards, and the bending surfaces of the two extension plates (34) are provided with through mounting holes. The two ends of the top of the gantry frame (31) are fixedly connected with lifting rings (35). The two lifting rings (35) and the two mounting holes are fixedly connected with lights (36). The two sides of the first conveyor belt (1) and the rear of the gantry frame (31) are fixedly connected with connectors (37). The inner surfaces of the two connectors (37) are fixedly connected with air nozzles (38).

2. The screen printing fragment detection device as described in claim 1, characterized in that: The rear of the first conveyor belt (1) is provided with a second conveyor belt (2) that is in the same direction and at the same height. The front and rear sides of the lower surface of the second conveyor belt (2) are respectively fixedly connected with a first end seat (7) and a second end seat (10). The lower sides of the second conveyor belt (2) are both fixedly connected with support bars (6) along their length. The front ends of the two support bars (6) are bent upward and hinged to the two first end seats (7) respectively. The front of the outer surface of the two support bars (6) is provided with a groove (8) along its length. The two grooves (8) are slidably connected with a slide rod (9). The two second end seats (10) are rotatably connected with a horizontal shaft (11). The two ends of the outer surface of the slide rod (9) and the two ends of the outer surface of the horizontal shaft (11) are both hinged with a hinge rod (12).

3. The screen printing fragment detection device as described in claim 2, characterized in that: A mounting plate (13) is fixedly connected to the bottom end between the two support bars (6) and to the front of the slide rod (9). A cylinder (14) is fixedly connected to the upper surface of the mounting plate (13) laterally. A connecting ring is fixedly connected to the rear end of the piston rod of the cylinder (14). The connecting ring is rotatably connected to the outer surface of the slide rod (9).

4. The screen printing fragment detection device as described in claim 3, characterized in that: Multiple reinforcing frames (15) are horizontally fixedly connected to the front and bottom of the two support bars (6).

5. The screen printing fragment detection device as described in claim 2, characterized in that: The rear of the second conveyor belt (2) is provided with a third conveyor belt (4) that is in the same direction as the conveyor belt and at the same height. Above the third conveyor belt (4) is a fourth conveyor belt (5) that is perpendicular to the conveyor belt. The front side of the fourth conveyor belt (5) is flush with the front end face of the third conveyor belt (4).

6. The screen printing fragment detection device as described in claim 5, characterized in that: The bottom ends of the first conveyor belt (1), the third conveyor belt (4) and the fourth conveyor belt (5) are all fixedly connected to support frames.

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