A flattening device for off-line detection of thin film printing quality

Abstract

The utility model discloses a kind of flattening devices for film printing quality offline detection, including detection platform, the inside of detection platform is provided with negative pressure cavity, the upper portion of negative pressure cavity is installed with flattening assembly, flattening assembly is used to flatten film and handle, flattening assembly from below to above sequentially includes negative pressure suction plate, middle light-shielding layer and upper support layer.The beneficial effects of the utility model are: by setting middle light-shielding layer is the dark flexible material of thickness 1 millimeter to 3 millimeters effectively shielding the suction hole on negative pressure suction plate, with good flexibility and air permeability, can flatten film, while setting upper support layer, the weave imaging of middle light-shielding layer can be eliminated, to improve imaging quality, when external vacuum source transports negative pressure to negative pressure cavity by negative pressure pipeline, airflow is applied to film surface by the suction hole on negative pressure suction plate, it is firmly adsorbed on flattening assembly.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a flattening device for offline detection of film printing quality. Background Technology

[0002] Film printing is a processing technique that prints images and text on the surface of flexible materials such as plastic films. It is widely used in packaging, labeling, decoration, electronics, agriculture, and other fields. Offline quality inspection of film printing refers to the systematic and standardized analysis and evaluation of key quality indicators in a separate testing environment (laboratory or dedicated testing area) after the printing process is completed, using specific instruments and methods. Compared to online inspection, offline inspection is typically more thorough, more accurate, and better simulates actual usage conditions, making it a crucial step in ensuring that the final product quality meets standards and customer requirements.

[0003] Some existing offline film printing quality inspection devices use suction plates made of rigid metal materials such as steel or aluminum plates with drilled holes. Due to the thinness of the film, it cannot be completely flattened when placed on the suction plate, and wrinkles will occur. If flattening is done by wiping with water and scraping with a scraper, water stains will remain between the product and the suction plate, affecting the film imaging and inspection results, and causing false alarms. In addition, the holes in the suction plate, i.e., the suction holes, will create hole imaging on transparent products, affecting the product's inspection quality. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing offline film printing quality inspection devices, which use suction plates made of rigid metal materials such as steel or aluminum plates with drilled holes. Because the film is thin, it cannot be completely flattened when placed on the suction plate, resulting in wrinkles. If flattening is done by wiping with water and scraping with a scraper, water stains will remain between the product and the suction plate, affecting the film imaging and inspection results, leading to false alarms. Furthermore, the holes in the suction plate, i.e., the suction holes, can create hole imaging on transparent products, affecting the product inspection quality. This invention provides a flattening device for offline film printing quality inspection.

[0005] The purpose of this utility model is achieved through the following technical solution: a flattening device for offline detection of film printing quality, including a detection platform, a negative pressure chamber is provided inside the detection platform, a flattening component is installed on the upper part of the negative pressure chamber, the flattening component is used to flatten the film, and the flattening component includes a negative pressure suction plate, a middle light-shielding layer and an upper support layer from bottom to top.

[0006] The negative pressure suction plate is set on the upper surface of the testing platform. The negative pressure suction plate has equally spaced suction holes. The multiple sets of equally spaced suction holes can evenly distribute the adsorption force and avoid uneven local stress on the film, which can cause wrinkles. The middle light-shielding layer is made of dark flexible material with a thickness of 1 mm to 3 mm and is breathable. The upper support layer is a high-mesh white nylon mesh.

[0007] The bottom of the testing platform is equipped with a negative pressure pipe that is connected to the negative pressure chamber. The end of the negative pressure pipe away from the negative pressure chamber is connected to an external vacuum source to form an adsorption force to fix the film.

[0008] By setting the central light-shielding layer to be a dark-colored flexible material with a thickness of 1 mm to 3 mm, the suction holes on the negative pressure suction plate are effectively blocked. It has good flexibility and breathability, and can effectively flatten the film. At the same time, the upper support layer is set to be a high-mesh white nylon mesh, which can eliminate the texture of the central light-shielding layer and thus improve the imaging quality. When the external vacuum source delivers negative pressure to the negative pressure chamber through the negative pressure pipe, the airflow acts on the film surface through the suction holes on the negative pressure suction plate, and firmly adsorbs it onto the flattening component.

[0009] A further technical solution is that the high-mesh white nylon mesh is woven from white fibers with a mesh count of 300 to 500.

[0010] A further technical solution is that the outer contours of the middle light-shielding layer and the upper support layer are provided with frame clamps. The frame clamps are rectangular frame structures and are used to fix the outer contours of the middle light-shielding layer and the upper support layer. The frame clamps fix the outer contours of the middle light-shielding layer and the upper support layer, making the installation and replacement of the flattening components more convenient.

[0011] A further technical solution is to install a pressure regulating valve on the negative pressure pipeline. The pressure regulating valve is used to adjust the negative pressure in the negative pressure pipeline. The pressure regulating valve further optimizes the adsorption effect and ensures that the membrane remains flat during the detection process.

[0012] A further technical solution is to use a breathable, dark-colored, flexible material for the central light-blocking layer.

[0013] This invention has the following advantages: By combining a negative pressure suction plate, a central light-shielding layer, and an upper support layer, it solves the problems of poor flattening effect and imaging interference caused by the simple structure of traditional suction plates. The negative pressure suction plate provides stable support while ensuring unobstructed airflow. The central light-shielding layer effectively blocks the suction holes, preventing hole imaging. The upper support layer 6 is made of high-mesh white nylon mesh, which eliminates the texture imaging of the central light-shielding layer, thereby improving image quality. The frame clamps fix the outer contours of the central light-shielding layer and the upper support layer, making the installation and replacement of the flattening assembly more convenient. Furthermore, the air pressure regulating valve on the negative pressure pipeline further optimizes the adsorption effect, ensuring that the film remains flat throughout the testing process. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the frame clamping component of this utility model;

[0016] In the diagram, 1. Detection platform; 2. Negative pressure chamber; 3. Negative pressure suction plate; 4. Suction hole; 5. Middle light-shielding layer; 6. Upper support layer; 7. Negative pressure pipe; 8. Air pressure regulating valve; 9. Frame clamping component. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1-2 As shown, a flattening device for offline detection of film printing quality includes a detection platform 1, a negative pressure chamber 2 is provided inside the detection platform 1, and a flattening component is installed on the upper part of the negative pressure chamber 2. The flattening component is used to flatten the film. The flattening component includes a negative pressure suction plate 3, a middle light-shielding layer 5 and an upper support layer 6 from bottom to top.

[0024] The negative pressure suction plate 3 is set on the upper surface of the detection platform 1. The negative pressure suction plate 3 has equally spaced suction holes 4. The multiple sets of equally spaced suction holes 4 can evenly distribute the adsorption force and avoid uneven local stress on the film, which can cause wrinkles. The middle light-shielding layer 5 is made of dark flexible material with a thickness of 1 mm to 3 mm and is breathable. The upper support layer 6 is a high-mesh white nylon mesh.

[0025] The bottom of the testing platform 1 is equipped with a negative pressure pipe 7 that is connected to the negative pressure chamber 2. The end of the negative pressure pipe 7 away from the negative pressure chamber 2 is connected to an external vacuum source to form an adsorption force to fix the film.

[0026] The central light-shielding layer 5, made of a dark-colored flexible material with a thickness of 1 mm to 3 mm, effectively blocks the suction holes 4 on the negative pressure suction plate 3. This material possesses good flexibility and breathability, effectively flattening the film. Simultaneously, the upper support layer 6, made of high-mesh white nylon mesh, eliminates the texture of the central light-shielding layer, thereby improving image quality. When an external vacuum source delivers negative pressure to the negative pressure chamber 2 through the negative pressure pipe 7, the airflow acts on the film surface through the suction holes 4 on the negative pressure suction plate 3, firmly adhering it to the flattening assembly.

[0027] High-mesh white nylon mesh is woven from white fibers with a mesh count of 300 to 500.

[0028] The outer contours of the middle light-shielding layer 5 and the upper support layer 6 are provided with frame clamps 9. The frame clamps 9 are rectangular frame structures. The frame clamps 9 are used to fix the outer contours of the middle light-shielding layer 5 and the upper support layer 6. The frame clamps 9 fix the outer contours of the middle light-shielding layer 5 and the upper support layer 6, making the installation and replacement of the flattening assembly more convenient.

[0029] A pressure regulating valve 8 is installed on the negative pressure pipeline 7. The pressure regulating valve 8 is used to adjust the negative pressure in the negative pressure pipeline 7. The pressure regulating valve 8 further optimizes the adsorption effect and ensures that the film remains flat during the detection process.

[0030] The central light-blocking layer 5 is made of breathable, dark-colored flexible material. Breathable dark-colored velvet can be selected. The breathability is to ensure stable negative pressure adsorption, and the dark color can be consistent with the background of the customer's electronic documents, avoiding the influence of false alarms caused by the background.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flattening device for offline inspection of film printing quality, comprising an inspection platform (1), characterized in that: The detection platform (1) is provided with a negative pressure chamber (2) inside. A flattening component is installed on the upper part of the negative pressure chamber (2). The flattening component is used to flatten the film. The flattening component includes a negative pressure suction plate (3), a middle light-shielding layer (5) and an upper support layer (6) from bottom to top. The negative pressure suction plate (3) is set on the upper surface of the detection platform (1). The negative pressure suction plate (3) has suction holes (4) at equal intervals. The middle light-shielding layer (5) is made of dark flexible material with a thickness of 1 mm to 3 mm and has air permeability. The upper support layer (6) is a high-mesh white nylon mesh. The bottom of the detection platform (1) is equipped with a negative pressure pipe (7) that is connected to the negative pressure chamber (2). The end of the negative pressure pipe (7) away from the negative pressure chamber (2) is connected to an external vacuum source to form an adsorption force to fix the film.

2. The flattening device for offline inspection of film printing quality according to claim 1, characterized in that: The high-mesh white nylon mesh is woven from white fibers with a mesh count of 300 to 500.

3. The flattening device for offline inspection of film printing quality according to claim 1, characterized in that: The outer contours of the middle light-shielding layer (5) and the upper support layer (6) are provided with frame clamps (9), which are rectangular frame structures and are used to fix the outer contours of the middle light-shielding layer (5) and the upper support layer (6).

4. The flattening device for offline inspection of film printing quality according to claim 1, characterized in that: A pressure regulating valve (8) is installed on the negative pressure pipeline (7), and the pressure regulating valve (8) is used to adjust the negative pressure in the negative pressure pipeline (7).

5. A flattening device for offline inspection of film printing quality according to claim 1, characterized in that: The central light-shielding layer (5) is made of a breathable, dark-colored, flexible material.

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