A visual inspection device for inkjet printers

Abstract

This utility model belongs to the field of automated inspection, specifically a visual inspection device for inkjet printers, including a conveying device; a support frame is fixedly connected to one side of the conveying device; a set of electric push rods is fixedly connected to one side of the support frame; a baffle is fixedly connected to the output end of the electric push rods; a first protective plate is fixedly connected to one side of the baffle; a first sliding plate is fixedly connected to one side of the first protective plate; a second protective plate is fixedly connected to one side of the first sliding plate; a second sliding plate is fixedly connected to one side of the baffle; a gantry frame is fixedly connected to the surface of the conveying device; a cylinder is fixedly connected to the bottom of the gantry frame; a mounting block is fixedly connected to the output end of the cylinder; and a detection camera is mounted at the bottom of the mounting block. By pushing the baffle with the electric push rods to position the product to be inspected below the detection camera, product offset caused by manual placement or conveying fluctuations can be reduced, positioning accuracy can be increased, positional deviation can be reduced, resulting in missed images, ensuring consistent inspection, and increasing the accuracy of the detection camera.

Description

Technical Field

[0001] This utility model relates to the field of automated inspection, specifically a visual inspection device for inkjet printers. Background Technology

[0002] Inkjet printers are devices used to spray markings onto product surfaces. They are characterized by clear markings, high efficiency, and strong adaptability, and are widely used in industries such as food, pharmaceuticals, and electronics. They achieve clear and durable markings through ink jetting or laser engraving.

[0003] When the inkjet printer is working, the inkjet content, character height, and inkjet position are set through the operation interface. The ink pump delivers ink from the ink cartridge to the pressure tank, and forms a continuous and uniform ink line through the nozzle. The ink line is subjected to high-frequency vibration by the oscillator, causing the ink line to break into ink droplets with equal spacing. The ink droplets fall onto the product surface through the charging electrode to form characters. The integrated camera captures the inkjet image in real time and compares it with the preset template to eliminate defective products such as blurry or missing strokes.

[0004] When placing items, it is difficult to place them directly in the center, which leads to compositional deviation and feature loss in the captured image, affecting the accuracy of the detection results. Therefore, a visual inspection device for inkjet printers is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A visual inspection device for inkjet printers, comprising a conveying device; a support frame fixedly connected to one side of the conveying device; a set of electric push rods fixedly connected to one side of the support frame; a baffle fixedly connected to the output end of the electric push rods; a first protective plate fixedly connected to one side of the baffle; a first sliding plate fixedly connected to one side of the first protective plate; the first sliding plate is inclined; a second protective plate fixedly connected to one side of the first sliding plate; support columns slidably connected to the bottom of both the second and first protective plates; the support columns fixedly connected to one side of the conveying device; a second sliding plate fixedly connected to one side of the baffle; the second sliding plate being lower than the first sliding plate; a gantry frame fixedly connected to the surface of the conveying device; a cylinder fixedly connected to the bottom of the gantry frame; a mounting block fixedly connected to the output end of the cylinder; and a detection camera mounted at the bottom of the mounting block. By pushing the baffle with the electric push rods to position the product to be inspected below the detection camera, product offset caused by manual placement or conveying fluctuations can be reduced, increasing positioning accuracy, reducing positional deviations that could lead to missed images, ensuring consistent inspection, and increasing the accuracy of the detection camera.

[0007] Preferably, a support plate is fixedly connected to one side of the gantry; a stepper motor is fixedly connected to the top of the support plate; the stepper motor is controlled by a detection camera; a swing plate is fixedly connected to the output end of the stepper motor; by controlling the swing plate to swing through the detection camera, a diversion action can be automatically performed when a defective product is detected. The surface of the swing plate guides the defective product to separate from the qualified product, which can reduce product collision and wear, and reduce damage caused by sorting. At the same time, the stepper motor controlled by the detection camera can realize automatic sorting, reduce manual intervention, and increase the detection efficiency of the detection camera.

[0008] Preferably, multiple mounting brackets are fixedly connected to the side wall of the mounting block; a ring light is fixedly connected to the end of each mounting bracket; the ring light provides a light source to illuminate the product to be inspected, so that the curved surfaces, depressions and other structures of the product to be inspected are evenly illuminated, reducing shadows and blind spots, reducing the occurrence of missed detections due to uneven lighting, and increasing the reliability and stability of the detection camera.

[0009] Preferably, a set of first sliders is slidably connected to the top of the gantry; a set of second sliders is slidably connected to the side wall of the gantry; a reflector is hinged between the first slider and the second slider; by adjusting the angle of the reflector, multi-angle illumination can be formed with the ring light, and the reflected light from the reflector is used as auxiliary light to supplement from the side, increasing image stability and increasing the clarity of the detection camera.

[0010] Preferably, a polarizing filter is installed at the bottom of the detection camera; the polarizing filter is configured correspondingly to the detection camera; by installing a polarizing filter at the bottom of the detection camera, light from specific directions can be filtered to reduce interference such as bright spots, overexposure, and reflections, thereby improving image quality and increasing the accuracy of defect identification.

[0011] Preferably, a third sliding plate is installed on one side of the baffle; the third sliding plate is set at the corner between the baffle and the first protective plate; by installing the third sliding plate at the connection between the baffle and the first protective plate, when the product to be tested changes its direction of movement during the slide, the speed is gradually buffered by the guidance of the curved surface of the third sliding plate, reducing the impact force caused by the collision, reducing the displacement, flipping or surface damage of the product to be tested caused by the collision, and reducing the detection camera from capturing unexpected angles or damaged states, thereby affecting the accuracy of the detection results.

[0012] The advantages of this utility model are:

[0013] 1. The inkjet printer visual inspection device of this utility model uses an electric push rod to push a baffle so that the product to be inspected is positioned below the inspection camera. This reduces product displacement caused by manual placement or transport fluctuations, increases positioning accuracy, reduces positional deviations that could lead to missed images, ensures consistent inspection, and increases the accuracy of the inspection camera.

[0014] 2. The inkjet printer visual inspection device of this utility model can automatically perform a diversion action when a non-conforming product is detected by controlling the swing plate with a detection camera. The surface of the swing plate guides the non-conforming product to separate from the qualified product, which can reduce product collision and wear and reduce damage caused by sorting. At the same time, the stepper motor controlled by the detection camera can realize automatic sorting, reduce manual intervention, and increase the detection efficiency of the detection camera. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main body of the present utility model;

[0017] Figure 2 This is a schematic diagram of the gantry frame structure in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first protective plate in this utility model;

[0019] Figure 4 This is a schematic diagram of the ring lamp in this utility model;

[0020] Figure 5 This is a schematic diagram of the polarizing filter in this utility model.

[0021] In the diagram: 1. Conveying device; 11. Support frame; 12. Electric push rod; 13. Baffle; 14. First protective plate; 15. Support column; 16. First sliding plate; 17. Second protective plate; 18. Second sliding plate; 19. Gantry frame; 110. Cylinder; 111. Mounting block; 112. Detection camera; 2. Support plate; 21. Stepper motor; 22. Swing plate; 3. Mounting frame; 31. Ring light; 4. First slider; 41. Second slider; 42. Reflector; 5. Polarizing filter; 6. Third sliding plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Specific implementation examples are given below.

[0024] like Figures 1 to 5 As shown in the figure, a visual inspection device for a coding machine according to an embodiment of the present invention includes a conveying device 1; a support frame 11 is fixedly connected to one side of the conveying device 1; a set of electric push rods 12 is fixedly connected to one side of the support frame 11; a baffle 13 is fixedly connected to the output end of the electric push rods 12; a first protective plate 14 is fixedly connected to one side of the baffle 13; a first sliding plate 16 is fixedly connected to one side of the first protective plate 14; the first sliding plate 16 is inclined; a second protective plate 17 is fixedly connected to one side of the first sliding plate 16; support columns 15 are slidably connected to the bottom of both the second protective plate 17 and the first protective plate 14; the support columns 15 are fixedly connected to one side of the conveying device 1; a second sliding plate 18 is fixedly connected to one side of the baffle 13; the second sliding plate 18 is set lower than the first sliding plate 16; a gantry frame 19 is fixedly connected to the surface of the conveying device 1; the... A cylinder 110 is fixedly connected to the bottom of the gantry frame 19; a mounting block 111 is fixedly connected to the output end of the cylinder 110; a detection camera 112 is installed at the bottom of the mounting block 111; during operation, a set of electric push rods 12 are controlled to extend and retract, so that they push the baffle 13 to the designated position, and the product to be inspected is placed on the first slide plate 16. The product slides down the inclined surface of the second protective plate 17 to one side of the baffle 13, and then slides down the surface of the second slide plate 18 to the surface of the conveying device 1. It is then transported by the conveying device 1 to the area below the detection camera 112 for inspection. By pushing the baffle 13 with the electric push rods 12 to place the product to be inspected under the detection camera 112, the product offset caused by manual placement or conveying fluctuations can be reduced, the positioning accuracy can be increased, the positional deviation can be reduced, and the missed images can be reduced, thus ensuring consistent inspection and increasing the accuracy of the detection camera 112.

[0025] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a support plate 2 is fixedly connected to one side of the gantry frame 19; a stepper motor 21 is fixedly connected to the top of the support plate 2; the stepper motor 21 is controlled by the detection camera 112; a swing plate 22 is fixedly connected to the output end of the stepper motor 21; during operation, when the detection camera 112 detects a defective product, it controls the support plate 2 to rotate, causing the defective product to enter another channel along one side of the swing plate 22. After the defective product passes through, the swing plate 22 immediately returns to its original position. By controlling the swing plate 22 to swing through the detection camera 112, a diversion action can be automatically performed when a defective product is detected. The surface of the swing plate 22 guides the defective product to separate from the qualified product, which can reduce product collision and wear, and reduce damage caused by sorting. At the same time, the stepper motor 21 is controlled by the detection camera 112, which can realize automatic sorting, reduce manual intervention, and increase the detection efficiency of the detection camera 112.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, multiple mounting brackets 3 are fixedly connected to the side wall of the mounting block 111; a ring light 31 is fixedly connected to the end of the mounting bracket 3; during operation, when the light is insufficient, the ring light 31 is turned on to emit light and illuminate the product to be inspected. The ring light 31 provides a light source to illuminate the product to be inspected, which can make the curved surface, concave and other structures of the product to be inspected evenly illuminated, reduce shadows and blind spots, reduce the occurrence of missed detections caused by uneven lighting, and increase the reliability and stability of the detection by the detection camera 112.

[0027] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a set of first sliders 4 are slidably connected to the top of the gantry frame 19; a set of second sliders 41 are slidably connected to the side wall of the gantry frame 19; a reflector 42 is hinged between the first slider 4 and the second slider 41; during operation, the first slider 4 and the second slider 41 are slid to adjust the reflective surface of the reflector 42 so that light shines on the surface of the product to be inspected. By adjusting the angle of the reflector 42, it can form multi-angle illumination with the ring light 31. The reflected light from the reflector 42 is used as auxiliary light to supplement from the side, increasing image stability and increasing the clarity of the detection camera 112.

[0028] like Figure 5 As shown, a polarizing filter 5 is installed at the bottom of the detection camera 112; the polarizing filter 5 is configured correspondingly to the detection camera 112; during operation, when light shines on the surface of the product to be inspected and is reflected, the polarizing filter 5 only allows light from a specific direction to pass through, thereby reducing the reflection interference when the detection camera 112 is shooting. By installing a polarizing filter 5 at the bottom of the detection camera 112, light from a specific direction can be filtered to reduce interference such as bright spots, overexposure, and reflection, thereby improving image quality and increasing the accuracy of defect identification.

[0029] like Figures 1 to 2 As shown, a third sliding plate 6 is installed on one side of the baffle 13; the third sliding plate 6 is set at the corner of the baffle 13 and the first protective plate 14; during operation, when the product to be tested slides from the first sliding plate 16 onto the second sliding plate 18, the third sliding plate 6 causes it to slide along the curved surface, reducing the damage caused by the product directly hitting the baffle 13. By installing the third sliding plate 6 at the connection between the baffle 13 and the first protective plate 14, when the product to be tested changes its direction of movement during the slide, the speed is gradually buffered by the guidance of the curved surface of the third sliding plate 6, reducing the impact force caused by the collision, reducing the displacement, flipping or surface damage of the product to be tested due to the collision, and preventing the detection camera 112 from capturing unexpected angles or damaged states, thereby affecting the accuracy of the detection results.

[0030] Working principle: By controlling the extension and retraction of a set of electric push rods 12, the baffle 13 is pushed to a designated position, and the product to be inspected is placed on the first slide plate 16. The product slides down the inclined surface of the second protective plate 17 to one side of the baffle 13, and then slides down the surface of the second slide plate 18 to the surface of the conveyor device 1. It is then transported by the conveyor device 1 to the area below the detection camera 112 for inspection. When the detection camera 112 detects a defective product, the support plate 2 is controlled to rotate, causing the defective product to enter another channel along one side of the swing plate 22. After the defective product passes, the swing plate 22 immediately returns to its original position. When there is insufficient light, the ring light 31 is turned on to emit light and illuminate the product to be tested. The first slider 4 and the second slider 41 are slid to adjust the reflective surface of the reflector 42 so that the light shines on the surface of the product to be tested. When the light shines on the surface of the product to be tested and is reflected, the polarizing filter 5 only allows light from a specific direction to pass through, thereby reducing the reflection interference when the detection camera 112 takes pictures. When the product to be tested slides from the first slide plate 16 to the second slide plate 18, the third slide plate 6 makes it slide along the curved surface to reduce the damage caused by the product to be tested directly hitting the baffle 13.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A visual inspection device for inkjet printers, characterized in that: Includes a conveying device (1); a support frame (11) is fixedly connected to one side of the conveying device (1); a set of electric actuators (12) is fixedly connected to one side of the support frame (11); a baffle (13) is fixedly connected to the output end of the electric actuators (12); a first protective plate (14) is fixedly connected to one side of the baffle (13); a first sliding plate (16) is fixedly connected to one side of the first protective plate (14); the first sliding plate (16) is inclined; a second protective plate (17) is fixedly connected to one side of the first sliding plate (16); the second protective plate (17) and the first protective plate... The bottom of each plate (14) is slidably connected to a support column (15); the support column (15) is fixedly connected to one side of the conveying device (1); the side of the baffle (13) is fixedly connected to a second slide plate (18); the second slide plate (18) is set lower than the first slide plate (16); the surface of the conveying device (1) is fixedly connected to a gantry frame (19); the bottom of the gantry frame (19) is fixedly connected to a cylinder (110); the output end of the cylinder (110) is fixedly connected to an installation block (111); a detection camera (112) is installed at the bottom of the installation block (111).

2. The inkjet printer visual inspection device according to claim 1, characterized in that: A support plate (2) is fixedly connected to one side of the gantry frame (19); a stepper motor (21) is fixedly connected to the top of the support plate (2); the stepper motor (21) is controlled by a detection camera (112); and a swing plate (22) is fixedly connected to the output end of the stepper motor (21).

3. The inkjet printer visual inspection device according to claim 2, characterized in that: The mounting block (111) has multiple mounting brackets (3) fixed to its side wall; a ring light (31) is fixed to the end of the mounting bracket (3).

4. The inkjet printer visual inspection device according to claim 3, characterized in that: A first slider (4) is slidably connected to the top of the gantry (19); a second slider (41) is slidably connected to the side wall of the gantry (19); a reflector (42) is hinged between the first slider (4) and the second slider (41).

5. The inkjet printer visual inspection device according to claim 4, characterized in that: A polarizing filter (5) is installed at the bottom of the detection camera (112); the polarizing filter (5) is configured to correspond to the detection camera (112).

6. The inkjet printer visual inspection device according to claim 5, characterized in that: A third sliding plate (6) is installed on one side of the baffle (13); the third sliding plate (6) is set at the corner between the baffle (13) and the first protective plate (14).

Images