Device for detecting light transmittance of colored film on line

Abstract

The utility model belongs to the technical field of polyester films, and particularly relates to a device for detecting the light transmittance of a colored film on line, which comprises a bottom plate, a left vertical plate and a right vertical plate are vertically arranged on two sides of the bottom plate, a lead screw shaft extending to the left vertical plate is arranged on the right vertical plate, and the lead screw shaft is connected with the left vertical plate and the right vertical plate through bearings. A screw rod shaft installed on the right vertical plate extends from the plate face of the right vertical plate and is used for being connected with a driving component, a nut pair is arranged on the screw rod shaft between the left vertical plate and the right vertical plate in a threaded mode, a base is arranged at the upper end of the nut pair, a light transmittance measuring instrument is arranged on the base, and a sliding seat is arranged on one side of the nut pair. A sliding rail extending from the left vertical plate to the right vertical plate is arranged on the bottom plate, and the sliding base is installed on the sliding rail. The light transmittance measuring instrument can be accurately positioned to the edge of the polyester film and continuously measures the light transmittance along with the production process of the polyester film, so that the optical performance of the polyester film is mastered in real time.

Description

Technical Field

[0001] The utility model belongs to the technical field of polyester films, and in particular relates to a device for online detecting the light transmittance of a colored film. Background Art

[0002] Light transmittance is a physical term that refers to the ability of light to pass through a medium. It is the percentage of the luminous flux that passes through a transparent or translucent body to the incident luminous flux. In the manufacture of polyester films, especially in the manufacture of colored films, it is necessary to strictly control the optical properties of the film, such as visible light transmittance, UV rejection, infrared rejection, etc. In continuous production polyester film production lines, handheld measuring instruments are generally used to measure the light transmittance of the film online, or by sampling and measuring after the roll is changed. Both methods have a large measurement workload and cannot effectively monitor the changes in visible light transmittance, UV rejection, and infrared rejection in real time during the manufacturing process. They are not convenient for production adjustments, and the measurement results are prone to lag, resulting in a large number of defective products.

[0003] Application number CN202221506922.6 is a transmittance measuring device, which mainly introduces a transmittance testing device for measuring the transmittance of glass panels. It is mainly intended to solve the following problems: when the transmittance detector is not needed for a long time, the transmittance detector will be idle. When idle, dust is easily attached to its surface. When dust accumulates on the detector, testing the glass will affect the measurement accuracy of the equipment, making the test results inaccurate and affecting glass production. This equipment is not suitable for continuous production of polyester film production lines.

[0004] Application number CN202222347713.8 provides a photovoltaic coating film transmittance testing device, which irradiates light at different angles on the test sample and detects its transmittance by irradiating it at different angles.

[0005] The above measuring equipment measures the sample when it is in a static state. For high-speed polyester film production lines, sampling and measurement after unwinding often result in delayed measurement results, and the trend of light transmittance changes cannot be grasped in real time. As a result, when the measurement results deviate from the standard, untimely production adjustments may lead to the output of defective products. Utility Model Content

[0006] (1) Technical issues to be resolved

[0007] The utility model mainly aims at the above problems and proposes a device for online detection of the light transmittance of colored films. Its purpose is to solve the problems that during continuous production, sampling and measurement after unwinding causes the test results to lag, and when the measurement results deviate from the standard, a large number of defective products are produced; there are certain safety hazards in using a handheld measuring instrument to clamp the edge, and it wastes human resources, and it is impossible to grasp the changes in test results in real time for a long time.

[0008] (2) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides a device for online detection of the transmittance of a colored film, comprising a base plate, a left vertical plate and a right vertical plate vertically arranged on both sides of the base plate, a screw shaft extending to the left vertical plate is provided on the right vertical plate, and the screw shaft is connected to the bearings of the left vertical plate and the right vertical plate, the screw shaft installed on the right vertical plate extends from the plate surface of the right vertical plate for connecting a driving component, a nut pair is threadedly provided on the screw shaft between the left vertical plate and the right vertical plate, a base is provided at the upper end of the nut pair, a transmittance measuring instrument is provided on the base, a slide is provided on one side of the nut pair, a slide rail extending from the left vertical plate to the right vertical plate is provided on the base plate, and the slide is installed on the slide rail.

[0010] Furthermore, it also includes a limit block, which has a slide groove installed on the slide rail, and a limit nut is set on the limit block. The screw of the limit nut extends into the slide groove from one side end of the limit block and is threadedly connected to the limit block.

[0011] Furthermore, there are two sets of limiting nuts, which are installed on both side ends of the limiting block.

[0012] Furthermore, a mounting plate is provided on the right vertical plate, a camera is provided on the mounting plate, and the camera is arranged to correspond to the screen of the transmittance measuring instrument.

[0013] Furthermore, the height of the base is greater than the height of the left vertical plate.

[0014] Furthermore, the driving component is a handwheel.

[0015] Furthermore, the driving component includes a stepper motor, a driving wheel, a driven wheel and a driving belt. The stepper motor is installed on the right vertical plate, and its output shaft extends from the plate surface of the right vertical plate to connect to the driving wheel. The driven wheel is installed on the screw shaft, and the driving wheel and the driven wheel are connected by a driving belt.

[0016] Furthermore, the transmittance measuring instrument is a visible light transmittance meter, an ultraviolet light transmittance meter or a haze transmittance meter.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the utility model provides a device for online detection of the light transmittance of a colored film, which constructs a stable support structure through a base plate, left and right vertical plates, and a screw shaft connecting the two plates. The screw shaft is driven by a driving component, which can control the movement of the transmittance meter along the slide rail of the device. Through this mechanical and automated movement, the transmittance meter can accurately locate the edge of the polyester film and continuously measure the transmittance as the polyester film is produced, thereby grasping the optical properties of the polyester film in real time, such as key parameters such as visible light transmittance, infrared blocking rate or ultraviolet blocking rate. This design greatly reduces the need for manual operation and the error rate, optimizes the production process, and reduces the output of defective products caused by measurement lag, thereby improving overall production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the working state structure of a device for online detection of the transmittance of a colored film disclosed in this application.

[0020] Figure 2 This is a schematic structural diagram of a device for online detection of light transmittance of a colored film disclosed in this application.

[0021] Figure 3 This is a partial structural diagram of a device for online detection of light transmittance of a colored film disclosed in this application.

[0022] The reference numerals shown in the figure are: 1. base plate; 2. left vertical plate; 3. right vertical plate; 4. screw shaft; 5. driving component; 6. nut pair; 7. base; 8. transmittance measuring instrument; 9. slide; 10. slide rail; 11. limit block; 12. slide groove; 13. limit nut; 14. mounting plate; 15. camera; 16. polyester film; 50. stepping motor; 51. driving pulley; 52. driven pulley; 53. driving belt. DETAILED DESCRIPTION

[0023] The following is a detailed description of the present invention in conjunction with the accompanying drawings, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] See also Figure 1-Figure 3 The figure shows a schematic diagram of the structure of a device for online detection of light transmittance of a colored film provided by a preferred embodiment of the present application. Figure 1-Figure 3 In the illustrated embodiment, the device comprises a base plate 1, with two vertical plates mounted perpendicularly on either side. A screw shaft 4 is mounted on the right vertical plate 3. This shaft is connected to the left and right vertical plates 2 and 3 via bearings and extends beyond the right vertical plate 3. The end of the screw shaft 4 extending beyond the right vertical plate 3 is connected to a drive component 5, which drives the rotation of the screw shaft 4.

[0027] A nut pair 6 is mounted on the screw shaft 4, which moves along the screw shaft 4 as the screw shaft 4 rotates. A base 7 is connected to the upper end of the nut pair 6, on which a transmittance meter 8 is mounted. Furthermore, a slide 9 is attached to one side of the nut pair 6 and mounted on a slide rail 10 on the base plate 1. The length of the slide rail 10 is perpendicular to the direction from the left vertical plate 2 to the right vertical plate 3.

[0028] When the drive unit 5 is activated, the screw shaft 4 rotates, and the transmittance meter 8 on the base 7 moves along the slide rail 10, ensuring that the transmittance meter 8 is precisely aligned with the edge of the polyester film 16 moving on the production line. As the polyester film 16 moves, the transmittance meter 8 detects and records parameters such as the visible light transmittance, infrared radiation rejection, and ultraviolet radiation rejection of the polyester film 16 in real time. This design not only ensures measurement accuracy but also greatly improves production efficiency and product quality control.

[0029] In addition, the device is also equipped with a limit block 11 to further improve the accuracy and safety of the operation. Figure 3As shown, the limit block 11 is provided with a slide groove 12, which can be smoothly installed on the slide rail 10. One or two limit nuts 13 are provided on the limit block 11. The limit nut 13 is threadedly connected to the limit block 11 through a screw, and the end of the screw extends into the slide groove 12. The movement range of the transmittance measuring instrument 8 can be set by adjusting the limit nut 13, ensuring that the transmittance measuring instrument 8 moves accurately on the predetermined track and preventing damage to the equipment due to exceeding the measurement range, thereby enhancing the stability and reliability of the equipment and adapting to the transmittance detection of polyester films of different widths. When in use, slide the limit block 11 to the predetermined target point, and then rotate the limit nut 13 to fix the screw on the surface of the slide rail 10, thereby locking the limit block 11.

[0030] In this embodiment, a mounting plate 14 is also mounted on the right vertical plate 3, equipped with a camera 15. Camera 15, facing the screen of the transmittance measuring instrument 8, monitors the measurement results in real time and transmits the data to a computer display in the central control room, enabling remote, real-time monitoring of changes in film transmittance. By activating camera 15 and the central control room's monitoring software, remote, real-time monitoring of transmittance changes during the production process is possible. This solution allows production technicians to monitor product quality at all times within the central control room and adjust relevant parameters in a timely manner, thereby reducing the number of defective products and significantly improving production efficiency.

[0031] In this embodiment, the height of the lower surface of the base 7 from the bottom plate 1 is greater than the height of the upper surface of the left vertical plate 2. In this way, when the transmittance measuring instrument 8 is driven to move, the base 7 can extend out of the left vertical plate 2, thereby avoiding interference between the base 7 and the left vertical plate 2.

[0032] In this embodiment, both manual adjustment and automated control are possible to meet the needs of different scenarios. When manual adjustment is performed, the drive component 5 can be a handwheel. When automated control is used, the drive component 5 can also be an automatic drive mechanism comprising a stepper motor 50, a driving pulley 51, a driven pulley 52, and a drive belt 53. The stepper motor 50 is mounted on the right vertical plate 3, and its output shaft passes through the right vertical plate 3 and is connected to the driving pulley 51. The driven pulley 52 is mounted on the screw shaft 4 and connected to the driving pulley 51 via a drive belt 53.

[0033] At the same time, using different types of transmittance measuring instruments 8 can also meet various monitoring requirements. For example, the transmittance measuring instrument 8 can be a visible light transmittance meter, an ultraviolet light transmittance meter, or a haze transmittance meter.

[0034] Therefore, from any point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the application is limited by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in this application. Any figure mark in the claims should not be regarded as limiting the claim involved. In addition, it is obvious that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices stated in the device claim may also be implemented by the same unit or device through software or hardware. The words first, second, etc. are used to indicate names and do not indicate any particular order.

[0035] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A device for online detection of light transmittance of a colored film, characterized in that: The invention comprises a base plate, a left vertical plate and a right vertical plate are vertically arranged on both sides of the base plate, a screw shaft extending to the left vertical plate is provided on the right vertical plate, and the screw shaft is connected with the bearings of the left vertical plate and the right vertical plate, the screw shaft installed on the right vertical plate extends from the plate surface of the right vertical plate for connecting a driving component, a nut pair is threadedly provided on the screw shaft between the left vertical plate and the right vertical plate, a base is provided on the upper end of the nut pair, a transmittance measuring instrument is provided on the base, a slide is provided on one side of the nut pair, a slide rail extending from the left vertical plate to the right vertical plate is provided on the base plate, and the slide is installed on the slide rail.

2. The device for online detection of light transmittance of a colored film according to claim 1, characterized in that: It also includes a limit block, which has a slide groove installed on the slide rail. A limit nut is set on the limit block, and the screw of the limit nut extends into the slide groove from one side end of the limit block and is threadedly connected to the limit block.

3. The device for online detection of light transmittance of a colored film according to claim 2, characterized in that: The number of the limiting nuts is two, and they are installed on both side ends of the limiting block.

4. The device for online detection of light transmittance of a colored film according to claim 1, characterized in that: The right vertical plate is further provided with a mounting plate, on which a camera is provided. The camera is aligned with the screen of the transmittance measuring instrument.

5. The device for online detection of light transmittance of a colored film according to claim 1, characterized in that: The height of the base is greater than the height of the left vertical plate.

6. The device for online detection of light transmittance of a colored film according to claim 1, characterized in that: The driving component is a hand wheel.

7. The device for online detection of light transmittance of a colored film according to claim 1, characterized in that: The driving component includes a stepper motor, a driving wheel, a driven wheel and a driving belt. The stepper motor is installed on the right vertical plate, and its output shaft extends from the plate surface of the right vertical plate to connect to the driving wheel. The driven wheel is installed on the screw shaft, and the driving wheel and the driven wheel are connected by a driving belt.

8. The device for online detection of light transmittance of a colored film according to claim 1, characterized in that: The transmittance measuring instrument is a visible light transmittance meter, an ultraviolet light transmittance meter or a haze transmittance meter.

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