Air suction flattening plate with negative pressure self-adjusting function

Abstract

The invention discloses an air suction flattening plate with a negative pressure self-adjusting function, and the flattening structure comprises an air suction plate main body which is used for adsorbing a film to be detected and providing a flattening surface; the air suction power assembly comprises a negative pressure air suction pipeline communicated with the bottom surface of the air suction plate main body, and the other end of the pipeline is connected with a negative pressure fan; the air suction control assembly comprises a negative pressure sensor and a PLC, the negative pressure sensor monitors the negative pressure in the negative pressure air suction pipeline, and the PLC receives signals and controls the rotating speed of the negative pressure draught fan so as to achieve the air suction flattening adaptability to different specifications of films to be detected. According to the technical scheme, the problem that the flattening effect is poor due to changes of the size and the thickness of the to-be-detected film during offline detection in the prior art can be effectively solved.

Description

Technical Field

[0001] This invention relates to the field of thin film printing inspection technology, and in particular to a suction spreading plate with negative pressure self-adjustment function. 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] In the quality inspection of film products, the inherent softness, deformability, and static electricity of the film material make them prone to wrinkles, drifting, and uneven stress, directly affecting the reliability of quality inspection. To solve this core problem, "suction flattening" technology has emerged and has become an indispensable key link in the quality inspection of high-end printed products.

[0004] In some existing suction spreading plates, the negative pressure fan generally operates at a fixed speed, generating a fixed maximum air volume and vacuum degree. However, different film products have certain differences in material, thickness, and width. The constant air volume and vacuum degree result in different pressures exerted by the suction spreading plate on film products of different sizes. When the pressure is too low, the spreading effect is poor. When the pressure is too high, it may overstretch the film, damage the film, and reduce the inspection quality of the film products. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing suction spreading plates, where the negative pressure fan generally operates at a fixed speed, generating a fixed maximum air volume and vacuum degree. However, different film products have certain differences in material, thickness, and width. The constant air volume and vacuum degree result in different pressures exerted by the suction spreading plate on film products of different sizes. When the pressure is too low, the spreading effect is poor; when the pressure is too high, it may overstretch the film, damage the film, and reduce the quality of film product testing. This invention provides a suction spreading plate with a negative pressure self-adjusting function.

[0006] The objective of this invention is achieved through the following technical solution: a suction plate with negative pressure self-adjustment function, comprising a flattening structure, the flattening structure comprising a suction plate body, the flattening structure being used to adsorb the film to be tested and provide a flattening surface;

[0007] The suction power assembly includes a negative pressure suction pipe connected to the bottom surface of the suction plate body, and a negative pressure fan connected to the other end of the negative pressure suction pipe. The suction power assembly provides suction for the flattened structure.

[0008] The suction control component includes a negative pressure sensor and a PLC controller. The negative pressure sensor is installed on the negative pressure suction duct to monitor the negative pressure within the duct. The PLC controller is connected to both the negative pressure sensor and the negative pressure fan. A frequency converter is installed on the negative pressure fan. The PLC controller receives the signal from the negative pressure sensor and controls the speed of the negative pressure fan through the frequency converter. The PLC controller automatically adjusts the speed of the negative pressure fan based on preset values ​​and actual feedback values. The suction control component controls the suction force of the suction power component to achieve adaptability to suction and flattening of different film specifications.

[0009] By precisely controlling the suction intensity during the film flattening process through the suction control component, damage to the film is effectively avoided, while simultaneously improving the equipment's adaptability and efficiency. In practical applications, films of different specifications can achieve good flattening results, reducing adjustment time during operation and improving inspection accuracy and production efficiency. Furthermore, the use of a dark-colored, flexible, breathable material liner and a high-mesh screen further protects the film surface, preventing minor scratches and ensuring film quality. Optimized airflow paths and matched fan performance parameters result in smoother system operation, reduced noise, and a better working environment.

[0010] A further technical solution is that the main body of the suction plate includes a suction hole plate layer, a pad layer and a high mesh screen. The suction hole plate layer has suction holes arranged at equal intervals. The pad layer is located above the suction hole plate layer and the high mesh screen is located above the pad layer.

[0011] A further technical solution is to use a dark-colored flexible material for the padding layer, with a thickness of 1 to 3 millimeters, which is breathable.

[0012] By using a dark-colored, flexible, and breathable liner layer and a high-mesh screen, the liner layer effectively blocks the air vents on the air vent plate, preventing hole imaging. The high-mesh screen eliminates texture imaging of the liner layer, thereby improving the imaging quality of the film under test.

[0013] A further technical solution is to install a limiting component on the upper part of the suction plate body. The limiting component includes a lower stop gauge and a left stop gauge, which are located at the edge of the suction plate body and are used to limit the film to be tested.

[0014] A further technical solution is that a suction base plate is installed at the bottom of the suction plate body, a negative pressure chamber is set between the suction hole plate layer and the suction base plate, the suction holes on the suction hole plate layer are connected to the negative pressure chamber, and the air outlet of the negative pressure chamber is connected to the negative pressure suction pipe through the suction nozzle.

[0015] A further technical solution is to install a pressure relief valve on the negative pressure suction duct, which is responsible for pressure relief protection when the pressure inside the negative pressure suction duct reaches its upper limit.

[0016] A further technical solution is to install a silencer at the air outlet of the negative pressure fan. The silencer can reduce noise interference at the air outlet of the negative pressure fan.

[0017] This invention offers the following advantages: By precisely controlling the suction intensity during the film flattening process through a specially designed suction control component, it effectively prevents damage to the film during flattening, while simultaneously improving the adaptability and efficiency of the equipment. In practical applications, films of different specifications can achieve good flattening results, reducing adjustment time during operation and improving detection accuracy and production efficiency. Furthermore, the use of a dark-colored, flexible, breathable material liner and a high-mesh screen further protects the film surface, preventing minor scratches and ensuring film quality. Optimized airflow paths and matched fan performance parameters result in smoother system operation, reduced noise, and better protection for the working environment. It effectively solves the problem of poor flattening results caused by variations in the size and thickness of the film being tested during offline detection in existing technologies. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a cross-sectional schematic diagram of the main body of the suction plate of the present invention;

[0020] Figure 3 This is a side view of the structure of the present invention;

[0021] In the diagram, 1. Suction plate layer; 2. Lining layer; 3. High mesh screen; 4. Film to be tested; 5. Lower baffle; 6. Left baffle; 7. Suction plate body; 8. Suction base plate; 9. Suction nozzle; 10. Negative pressure suction pipeline; 11. Negative pressure sensor; 12. Silencer; 13. Negative pressure fan; 14. Pressure relief valve; 15. PLC controller; 16. Negative pressure chamber. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the 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 invention without inventive effort are within the scope of protection of the invention.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0025] 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.

[0026] In the description of this invention, 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 invention 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 invention 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, 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 invention based on the specific circumstances.

[0028] like Figures 1-3As shown, a suction plate with negative pressure self-adjustment function includes a flattening structure, which includes a suction plate body 7. The flattening structure is used to adsorb the film 4 to be tested and provide a flattening surface.

[0029] The suction power assembly includes a negative pressure suction pipe 10 connected to the bottom surface of the suction plate body 7, and a negative pressure fan 13 connected to the other end of the negative pressure suction pipe 10. The suction power assembly provides suction for the flattened structure.

[0030] The suction control component includes a negative pressure sensor 11 and a PLC controller 15. The negative pressure sensor 11 is installed on the negative pressure suction pipe 10 to monitor the negative pressure in the negative pressure suction pipe 10. The PLC controller 15 is connected to the negative pressure sensor 11 and the negative pressure fan 13 respectively. A frequency converter is installed on the negative pressure fan 13. The PLC controller 15 receives the signal from the negative pressure sensor 11 and controls the speed of the negative pressure fan 13 through the frequency converter. The suction control component controls the suction force of the suction power component to achieve adaptability to suction flattening of different specifications of the film 4 to be tested.

[0031] By precisely controlling the suction intensity during the film flattening process through the suction control component, damage to the film is effectively avoided, while simultaneously improving the equipment's adaptability and efficiency. In practical applications, films of different specifications can achieve good flattening results, reducing adjustment time during operation and improving inspection accuracy and production efficiency. Furthermore, the use of a dark-colored, flexible, breathable material liner and a high-mesh screen further protects the film surface, preventing minor scratches and ensuring film quality. Optimized airflow paths and matched fan performance parameters result in smoother system operation, reduced noise, and a better working environment.

[0032] The main body of the suction plate 7 includes a suction hole plate layer 1, a padding layer 2, and a high mesh screen 3. The suction hole plate layer 1 has suction holes arranged at equal intervals. The padding layer 2 is located above the suction hole plate layer 1, and the high mesh screen 3 is located above the padding layer 2.

[0033] The padding layer 2 is made of a dark-colored flexible material with a thickness of 1 mm to 3 mm and is breathable.

[0034] By using a dark-colored, flexible, and breathable liner layer and a high-mesh screen, the liner layer effectively blocks the air vents on the air vent plate, preventing hole imaging. The high-mesh screen eliminates texture imaging of the liner layer, thereby improving the imaging quality of the film under test.

[0035] A limiting component is installed above the suction plate body 7. The limiting component includes a lower stop 5 and a left stop 6. The lower stop 5 and the left stop 6 are located at the edge of the suction plate body 7 and are used to limit the film 4 to be tested.

[0036] A suction base plate 8 is installed at the lower part of the suction plate body 7. A negative pressure chamber 16 is provided between the suction hole plate layer 1 and the suction base plate 8. The suction holes on the suction hole plate layer 1 are connected to the negative pressure chamber 16. The air outlet of the negative pressure chamber 16 is connected to the negative pressure suction pipe 10 through the suction nozzle 9.

[0037] A pressure relief valve 14 is installed on the negative pressure suction pipe 10. The pressure relief valve 14 is responsible for pressure relief protection when the pressure inside the negative pressure suction pipe 10 reaches the upper limit.

[0038] The negative pressure fan is equipped with a silencer at the air outlet. The silencer can reduce noise interference at the air outlet of the negative pressure fan.

[0039] 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 suction-dispensing plate with negative pressure self-regulation function, characterized in that, A flattening structure, comprising a suction plate body (7), which is used to adsorb the film to be tested (4) and provide a flattened surface; The suction power assembly includes a negative pressure suction pipe (10) connected to the bottom surface of the suction plate body (7), and the other end of the negative pressure suction pipe (10) is connected to a negative pressure fan (13). The suction power assembly provides suction for the flattened structure. The suction control component includes a negative pressure sensor (11) and a PLC controller (15). The negative pressure sensor (11) is installed on the negative pressure suction pipe (10) to monitor the negative pressure in the negative pressure suction pipe (10). The PLC controller (15) is connected to the negative pressure sensor (11) and the negative pressure fan (13) respectively. The negative pressure fan (13) is equipped with a frequency converter. The PLC controller (15) receives the signal from the negative pressure sensor (11) and controls the speed of the negative pressure fan (13) through the frequency converter. The suction control component controls the suction force of the suction power component to achieve the adaptability of suction flattening to different specifications of the film (4) to be tested.

2. The suction plate with negative pressure self-adjustment function according to claim 1, characterized in that: The main body of the suction plate (7) includes a suction hole plate layer (1), a pad layer (2) and a high mesh number mesh (3). The suction hole plate layer (1) has suction holes arranged at equal intervals. The pad layer (2) is located above the suction hole plate layer (1), and the high mesh number mesh (3) is located above the pad layer (2).

3. The suction plate with negative pressure self-adjustment function according to claim 2, characterized in that: The padding layer (2) is made of a dark-colored flexible material with a thickness of 1 mm to 3 mm and is breathable.

4. The suction plate with negative pressure self-adjustment function according to claim 1, characterized in that: A limiting component is installed above the main body (7) of the suction plate. The limiting component includes a lower stop gauge (5) and a left stop gauge (6). The lower stop gauge (5) and the left stop gauge (6) are located at the edge of the main body (7) of the suction plate and are used to limit the film (4) to be tested.

5. A suction-dispensing plate with negative pressure self-adjustment function according to claim 2, characterized in that: A suction base plate (8) is installed at the lower part of the suction plate body (7). A negative pressure chamber (16) is provided between the suction hole plate layer (1) and the suction base plate (8). The suction holes on the suction hole plate layer (1) are connected to the negative pressure chamber (16). The air outlet of the negative pressure chamber (16) is connected to the negative pressure suction pipe (10) through the suction nozzle (9).

6. A suction plate with negative pressure self-regulating function according to claim 1, characterized in that: A pressure relief valve (14) is installed on the negative pressure suction pipe (10), which is responsible for pressure relief protection when the pressure inside the negative pressure suction pipe (10) reaches the upper limit.

7. A suction plate with negative pressure self-adjustment function according to claim 1, characterized in that: The negative pressure fan (13) is equipped with a silencer (12) at its air outlet.

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