Prism film inspection apparatus

Abstract

The utility model discloses a prism film detection device, the recessed cavity is equipped with light source subassembly in the recessed cavity, the rotating disc is divided into a plurality of detection spaces by the light -proof baffle, and the window is equipped with the glass plate in, and the rotating disc rotates around the own center axis, has the detection position of making the window and the recessed cavity upper and lower corresponding, the shell is covered in the outside of rotating disc, and the side of shell is equipped with the import and export, and in the detection position, the import and export are linked together with one of detection spaces, and the top of shell is equipped with the detection channel, and the top of detection channel is covered with the cover, and the detection channel is equipped with the bellows, and the upper end of bellows is sealed and fixedly connected with the cover, and the lower end cover lift plate, and the lift plate is equipped with detection component, the utility model discloses can realize the continuous detection of prism film, realizes the batch detection of prism film to the height of detection component can be adjusted according to actual detection demand.

Description

Technical Field

[0001] This utility model relates to the field of prism film processing equipment technology, and in particular to a prism film testing device. Background Technology

[0002] A prism film is an optical film that requires brightness or defect detection during manufacturing. Typically, the prism film is placed at an inspection station, with a light source positioned above or below it. An optical sensor detects the brightness of the light source passing through the prism film, thus measuring brightness. Alternatively, a camera imaging technique can be used to detect defects such as dents and scratches. Conventionally, a single prism film is placed below the optical sensor or camera for inspection, and then removed after inspection. This method cannot achieve continuous inspection of prism films, making it difficult to meet the needs of batch inspection. Furthermore, the height of the optical sensor or camera relative to the prism film cannot be adjusted according to actual inspection requirements, making it difficult to meet the actual inspection needs of prism films with different thicknesses, structures, or materials. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to propose a prism film detection device that enables continuous detection of prism films, thereby achieving batch detection of prism films. Furthermore, the height of the detection components can be adjusted according to actual detection needs, effectively meeting the actual detection requirements of prism films with different thicknesses, structures, or materials.

[0004] The technical solution of this utility model is achieved as follows: a prism film detection device, comprising a chassis, a housing, and a turntable;

[0005] The chassis has a number of recessed cavities spaced along the circumference; a light source assembly is installed in each of the recessed cavities.

[0006] The turntable is coaxially mounted above the chassis; the turntable is provided with several light-shielding partitions; the light-shielding partitions divide the turntable into several detection spaces arranged at intervals along the circumference; the turntable is provided with windows in the detection spaces; a glass plate is provided in the window; the glass plate is formed with placement positions for placing prism films; the turntable rotates around its own central axis and has detection positions in which several windows and several cavities correspond vertically.

[0007] The housing is mounted on the chassis and covers the outside of the turntable; the housing has an inlet and outlet on its side; at the detection position, the inlet and outlet are connected to one of the detection spaces.

[0008] The top of the housing has a detection channel corresponding to the recessed cavity; the top of the detection channel is covered by a cover plate; a corrugated pipe is provided inside the detection channel; the upper end of the corrugated pipe is sealed and fixedly connected to the cover plate, and the lower end is covered by a lifting plate; a detection component is provided on the lifting plate inside the corrugated pipe; the detection component has a detection end extending below the lifting plate; a driving component for driving the lifting plate to move up and down is provided on the cover plate inside the corrugated pipe.

[0009] Furthermore, the light source component corresponding to each of the concave cavities is one of a ring light source, a strip light source, or a coaxial light source.

[0010] Furthermore, the driving component is a rod; the rod is threadedly connected to the cover plate, and one end of the rod is rotatably connected to the lifting plate.

[0011] Furthermore, the edge of the turntable is provided with positioning holes corresponding to each detection space; a positioning rod is threadedly connected to the chassis; at the detection position, the end of the positioning rod is inserted into the positioning hole at the corresponding position.

[0012] Furthermore, the detection component is a photosensitive sensor or a camera.

[0013] Furthermore, the light-shielding partition has a top surface and an outer end surface adjacent to the top surface; a sealing strip is provided on the top surface and the outer end surface of the light-shielding partition; the sealing strip is sealed and connected to the inner wall of the housing.

[0014] Furthermore, the turntable is provided with limiting strips around the glass plate; the limiting strips together form the placement position.

[0015] Furthermore, the cover plate is provided with a disassembly port that communicates with the bellows.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0017] 1. This utility model arranges multiple detection spaces on a turntable, with each space is isolated from light interference. The rotation of the turntable continuously transports the prism film to the detection position. Using matching detection components and a light source assembly, brightness or defect detection can be performed on the prism film at multiple detection positions. The combination of these methods enables continuous detection of the prism film, allowing for batch inspection. The lifting plate is controlled to move up and down via a drive mechanism, adjusting the height of the detection components relative to the prism film, effectively meeting the actual detection needs of prism films with different thicknesses, structures, or materials.

[0018] 2. This utility model, through the use of a corrugated tube, covers the threaded holes and disassembly ports on the cover inside the corrugated tube, preventing external light from entering the interior of the housing through the threaded holes and disassembly ports, thereby improving the accuracy of the prism film detection process and making it highly practical.

[0019] 3. This utility model can detect the brightness effect of the prism film under different light sources by changing the type of light source component in the concave cavity. It has high detection efficiency, saves time and effort, and is highly practical. Attached Figure Description

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0021] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;

[0022] Figure 2 for Figure 1 A sectional view of the structure;

[0023] Figure 3 for Figure 1 Exploded view;

[0024] Figure 4 for Figure 2 Enlarged view of point A in the image;

[0025] Figure 5 This is a three-dimensional structural diagram of the turntable of this utility model;

[0026] Figure 6 This is a three-dimensional structural diagram of the shell and bellows of this utility model;

[0027] The components are as follows: 1. Chassis; 11. Cavity; 12. Positioning rod; 13. Light source assembly; 2. Turntable; 21. Light-shielding partition; 22. Sealing strip; 23. Window; 24. Glass plate; 26. Positioning hole; 27. Limiting strip; 3. Housing; 31. Detection channel; 32. Inlet and outlet; 4. Corrugated pipe; 41. Cover plate; 411. Disassembly port; 42. Lifting plate; 43. Detection component; 44. Rod body; 441. Limiting block; 442. Limiting seat. Detailed Implementation

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0029] like Figure 1-6The diagram illustrates a prism film inspection device according to this embodiment. This device is suitable for detecting surface defects or brightness of prism films. The device includes a chassis 1, a housing 3, and a turntable 2. The chassis 1 is a circular structure with a plurality of recesses 11 spaced apart along the circumference. In this embodiment, the recesses 11 are square, and there are three recesses 11. A light source assembly 13 is installed inside each recess 11. This light source assembly 13 emits light upwards. In this embodiment, depending on the actual inspection needs, the light source assembly 13 corresponding to each recess 11 is one of a ring light source, a strip light source, or a coaxial light source.

[0030] The aforementioned turntable 2 is a circular structure, and the turntable 2 is coaxially arranged above the turntable 2. Several light-shielding partitions 21 are arranged on the top surface of the turntable 2. Each light-shielding partition 21 has a strip-shaped structure, with a length extending radially along the turntable 2 and a height extending vertically. The light-shielding partitions 21 divide the turntable 2 into several detection spaces spaced apart along the circumferential direction. In this embodiment, the number of detection spaces is four. Windows 23, extending vertically through the turntable 2, are machined within the detection spaces on the turntable 2. The windows 23 have a square structure, and their dimensions are adapted to the dimensions of the aforementioned recesses 11. A light-transmitting glass plate 24 is embedded within the window 23. Placement positions are formed on the glass plate 24, allowing the prism film to be laid flat at these positions. The turntable 2 rotates around its central axis, creating detection positions where the windows 23 correspond vertically to the recesses 11. Preferably, in this embodiment, three windows 23 correspond vertically to three recesses 11. Through the above structural design, the light emitted by the light source component 13 in the cavity 11 can pass upward through the glass plate 24 at the corresponding position.

[0031] The aforementioned housing 3 is bolted to the chassis 1 and covers the outside of the turntable 2. The housing 3 prevents external light from entering the detection space. An inlet / outlet 32 ​​is machined on the side of the housing 3. When the turntable 2 is in the aforementioned detection position, the inlet / outlet 32 ​​is connected to one of the detection spaces, allowing the prism film to be moved into or out of its corresponding placement position within that detection space.

[0032] In the specific structural design, a through-sleeve is machined at the center of the chassis 1, and another through-sleeve is installed at the center of the top of the housing 3. A central shaft is installed at the center of the turntable 2. The upper end of the central shaft is inserted into the through-sleeve on the chassis 1, and the upper end of the central shaft is inserted into the through-sleeve on the housing 3. Through the above structural design, the turntable 2 can rotate around its own central axis.

[0033] Limiting strips 27 are arranged around the glass plate 24 on the turntable 2. The limiting strips 27 surround the aforementioned placement position. When the prism film is placed in the placement position, the limiting strips 27 can restrict the movement of the prism film.

[0034] The top of the aforementioned housing 3 is machined with detection channels 31 corresponding to each cavity 11. These detection channels 31 extend vertically. A cover plate 41 is bolted to the top of each detection channel 31. A bellows 4 is installed within each detection channel 31. This bellows 4 is a conventional component of the prior art, capable of telescoping along its length. The upper end of the bellows 4 is welded and sealed to the cover plate 41, while the lower end is sealed with a lifting plate 42. The vertical telescoping of the bellows 4 drives the lifting plate 42 to move vertically. A guide structure is installed between the lifting plate 42 and the detection channel 31 to guide the vertical movement of the lifting plate 42. A detection component 43 is installed on the lifting plate 42 inside the bellows 4. This detection component 43 is a conventional device of the prior art, used to detect the brightness or defects of the prism film. The detection component 43 is sealed and fixedly connected to the lifting plate 42 to prevent light from penetrating the lifting plate 42. The detection component 43 has a detection end extending below the lifting plate 42. The prism film can be inspected through the detection end of the detection component 43. In this embodiment, the detection component 43 is a photosensor or a camera, depending on the actual detection requirements. The photosensor can detect the brightness of the prism film. The camera can detect defects in the prism film by imaging. The camera is a CCD camera.

[0035] In this embodiment, a driving component is installed on the aforementioned cover plate 41 inside the bellows 4. This driving component is used to drive the lifting plate 42 to move up and down. The driving component is a rod 44. The rod 44 extends vertically inside the bellows 4 and is threadedly connected to the cover plate 41. A limiting block 441 is installed at the lower end of the rod 44. A limiting seat 442 is installed on the lifting plate 42. A limiting cavity is formed inside the limiting seat 442. The limiting block 441 is vertically limited within the limiting cavity and can rotate within the limiting cavity. By rotating the rod 44 in both directions, the lifting plate 42 can be driven to move up and down, which in turn drives the detection component 43 to move up and down.

[0036] The aforementioned cover plate 41 is machined with a disassembly port 411 that communicates with the bellows 4. The drive component and the detection component 43 can be disassembled and assembled through this disassembly port 411.

[0037] The threaded holes and disassembly ports 411 on the cover are enclosed inside the bellows 4 to prevent external light from entering the interior of the housing 3 through the threaded holes and disassembly ports 411, thereby improving the accuracy of the prism film detection process.

[0038] The aforementioned light-shielding partition 21 has a top surface and an outer end surface adjacent to the top surface. The top surface and the outer end surface of the light-shielding partition 21 form an L-shape. A sealing strip 22 is installed on the top surface and the outer end surface of the light-shielding partition 21. The sealing strip 22 has an L-shaped structure and is a rubber strip. The sealing strip 22 is sealed and connected to the inner wall of the housing 3 so that the detection space forms a closed space during detection.

[0039] In this embodiment, positioning holes 26 are machined at the edge of the turntable 2 corresponding to each detection space. The central axis of the positioning hole 26 extends radially along the turntable 2. A positioning rod 12 is threaded onto the chassis 1. When in the aforementioned detection position, by rotating the positioning rod 12, the end of the positioning rod 12 engages with the corresponding positioning hole 26, thereby locking the turntable 2 in the current position. By rotating the positioning rod 12, the end of the positioning rod 12 disengages from the positioning hole 26, thereby allowing the turntable 2 to rotate.

[0040] In practical use, the turntable 2 is rotated to move each detection space sequentially to the position of the inlet / outlet 32, and the prism film to be tested is placed on the glass plate 24. The turntable 2 is then rotated again to move each prism film to the detection position, and the positioning rod 12 is rotated to insert the positioning rod 12 into the positioning hole 26 to lock the turntable 2. The light source assembly 13 emits light, which is used by the detection component 43 to detect the prism film at each position. Alternatively, the prism film in a single detection space can be moved sequentially to the bottom of the detection component 43 at different positions to achieve brightness detection and defect detection. Alternatively, by changing the type of the light source assembly 13 in each cavity 11, the prism film in a single detection space can be moved sequentially to the top of the light source assembly 13 at different positions to sequentially detect the brightness effect of the prism film under different light sources. By rotating the rod 44 in both directions, the lifting plate 42 is driven to rise and fall, thereby moving the detection component 43 up and down to move closer to or away from the prism film. In the above method, each detection space can isolate light interference from each other. Through the matching detection component 43 and light source assembly 13, it is possible to perform brightness detection or defect detection on the prism film at multiple detection positions.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A prism film detection device, comprising a chassis, a housing, and a turntable; characterized in that: The chassis has a number of recessed cavities spaced along the circumference; a light source assembly is installed in each of the recessed cavities. The turntable is coaxially mounted above the chassis; the turntable is provided with several light-shielding partitions; the light-shielding partitions divide the turntable into several detection spaces arranged at intervals along the circumference; the turntable is provided with windows in the detection spaces; a glass plate is provided in the window; the glass plate is formed with placement positions for placing prism films; the turntable rotates around its own central axis and has detection positions in which several windows and several cavities correspond vertically. The housing is mounted on the chassis and covers the outside of the turntable; the housing has an inlet and outlet on its side; at the detection position, the inlet and outlet are connected to one of the detection spaces. The top of the housing has a detection channel corresponding to the recessed cavity; the top of the detection channel is covered by a cover plate; a corrugated pipe is provided inside the detection channel; the upper end of the corrugated pipe is sealed and fixedly connected to the cover plate, and the lower end is covered by a lifting plate; a detection component is provided on the lifting plate inside the corrugated pipe; the detection component has a detection end extending below the lifting plate; a driving component for driving the lifting plate to move up and down is provided on the cover plate inside the corrugated pipe.

2. The prism film detection device according to claim 1, characterized in that: The light source component in each of the concave cavities is one of a ring light source, a strip light source, or a coaxial light source.

3. The prism film detection device according to claim 1, characterized in that: The driving component is a rod; the rod is threadedly connected to the cover plate, and one end of the rod is rotatably connected to the lifting plate.

4. The prism film detection device according to claim 1, characterized in that: The turntable has positioning holes at the edge of each detection space; a positioning rod is threaded onto the chassis; at the detection position, the end of the positioning rod is inserted into the positioning hole at the corresponding position.

5. The prism film detection device according to claim 1, characterized in that: The detection component is a photosensitive sensor or a camera.

6. The prism film detection device according to claim 1, characterized in that: The light-shielding partition has a top surface and an outer end surface adjacent to the top surface; a sealing strip is provided on the top surface and the outer end surface of the light-shielding partition; The sealing strip is connected to the inner wall of the housing in a sealing fit.

7. The prism film detection device according to claim 1, characterized in that: The turntable is provided with limiting strips around the glass plate; the limiting strips together form the placement position.

8. The prism film detection device according to claim 1, characterized in that: The cover plate is provided with a disassembly port that communicates with the corrugated pipe.

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