Thickness detection device for optical film
By designing a thickness detection device including a clamping assembly and a roller body, the problems of surface attachment and vibration of the optical film are solved, the flatness and cleanliness of the optical film are achieved, and the accuracy and efficiency of thickness detection are improved.
Patent Information
- Application Number
- CN202510923278.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-04
- Publication Date
- 2025-09-23
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Attachments on the surface of optical films affect the X-ray penetration ability, resulting in poor measurement accuracy. In addition, optical films are disturbed by airflow or mechanical vibration, causing measurement errors, which are difficult to effectively solve with existing technologies.
A thickness detection device is designed, including a bracket, a detector body, a sliding track, a detector body, a clamping assembly and a roller body. The clamping assembly keeps the optical film flat, and the roller body cleans attachments, thereby achieving flatness and cleaning of the optical film and improving detection accuracy.
The fluctuation of X-ray penetration path length is reduced, the accuracy and efficiency of thickness detection are improved, and continuous detection of optical films during transportation is achieved.
Smart Images
Figure CN120685025A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of thickness detection, and in particular relates to a thickness detection device for an optical film. Background Art
[0002] The application of optical films in the sensor field is primarily reflected in improving sensor performance, optimizing optical signal transmission, and enabling the integration of specific functions. For example, in optical sensor systems, optical films are used to calibrate and filter light to meet the system's strict requirements for performance, power consumption, and size. In image sensors, optical films improve the transmission and reflection characteristics of light, effectively enhancing the image sensor's signal-to-noise ratio and image quality.
[0003] Because the thickness of an optical film directly affects its optical properties, such as transmittance and reflectivity, it must be monitored in real time during the production process. Currently, X-ray thickness measurement instruments are a commonly used measurement tool. Their operating principle is to emit a beam of X-rays, allowing them to penetrate the optical film. A detector on the other side of the film then receives the X-rays. The detector converts the intensity of the received X-rays into an electrical signal and transmits it to a processing system. The processing system then calculates the film's thickness based on known X-ray attenuation patterns and the properties of the optical film.
[0004] However, during actual measurements, the surface of the optical film may contain deposits such as water, oil, and oxides. These deposits can affect the penetration of X-rays, resulting in poor measurement accuracy. Furthermore, ideally, X-rays should penetrate the optical film vertically, with a fixed penetration path. However, during actual measurements, the optical film may fluctuate and tilt due to airflow disturbances or mechanical vibrations. A tilted optical film increases the X-ray penetration path length, causing the signal received by the detector to fail to accurately reflect the true thickness of the optical film, resulting in poor measurement accuracy. Summary of the Invention
[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a thickness detection device for optical films to solve the technical problems that the penetration ability of X-rays is affected by attachments such as water, oil, oxides, etc. on the surface of the optical film, thereby resulting in poor measurement accuracy, and the optical film is affected by airflow disturbances or mechanical vibrations, resulting in fluctuations and tilts, which increase the penetration path length of the X-rays and cause poor measurement accuracy.
[0006] To achieve the aforementioned object of the invention, the technical solution adopted by the present invention includes: a device for detecting the thickness of an optical film, comprising a bracket and a detector body, wherein the bracket is provided with a sliding track along the width direction of the optical film, the detector body is slidably connected to the sliding track, and a gap is provided in the middle of the detector body for the optical film to pass through, the bracket is provided with a left clamping group and a right clamping group, the left clamping group and the right clamping group are respectively provided on both sides of the length direction of the optical film, and the bracket is provided with a first conversion component; Two groups of leveling components are provided on the detector body, and the two groups of leveling components are respectively located on the upper and lower sides of the optical film. The leveling components include a first roller body and a second roller body both arranged along the length direction of the optical film, the first roller body is located on the side of the detector body close to the right clamping group, and the second roller body is located on the side of the detector body close to the left clamping group. A second conversion component is provided between the leveling component and the bracket; When the detector body moves toward the direction of the first roller, the opposite sides of the two first rollers respectively abut against the upper and lower sides of the optical film and move synchronously with the detector body. At this time, the left clamping group is in a clamping state with the optical film and the clamping surface can move synchronously with the optical film. When the detector body moves toward the direction of the second roller, the opposite sides of the two second rollers respectively abut against the upper and lower sides of the optical film and move synchronously with the detector body. At this time, the right clamping group is in a clamping state with the optical film and the clamping surface can move synchronously with the optical film. Under the action of the first conversion component and the second conversion component, as the movement direction of the detector body changes, the clamping states of the left clamping group and the right clamping group on the optical film and the working states of the first roller and the second roller relative to the optical film change accordingly.
[0007] Compared with the prior art, the advantages of the present invention include: (1) The present invention provides a thickness detection device for an optical film, wherein a left clamping group (or a right clamping group) maintains a clamping state on the optical film, and the first roller (or the second roller) can apply a lateral pulling force to the optical film through the friction between the first roller (or the second roller) and the optical film during the movement of the detector body, so that the optical film located in the gap of the detector body maintains a relatively flat state, thereby reducing the possibility of fluctuation and tilting of the optical film due to the influence of airflow disturbance or mechanical vibration, thereby reducing the possibility of increase in the penetration path length of X-rays, and improving the accuracy of detection.
[0008] (2) The present invention provides a thickness detection device for an optical film. Since the two first rollers (or the two second rollers) are in contact with the optical film on one side and the two first rollers (or the two second rollers) move along with the movement of the detector body, the first rollers (or the second rollers) can clean the upper and lower sides of the optical film during the movement, thereby reducing the attachments on the surface of the optical film, reducing the possibility of the attachments affecting the penetration ability of X-rays, and improving the accuracy of thickness detection.
[0009] (3) The present invention provides a thickness detection device for an optical film. Since the left clamping group (or the right clamping group) maintains a clamping state on the optical film and its clamping surface can also move synchronously with the optical film, such a setting can realize thickness detection during the transportation of the optical film, thereby improving the efficiency of thickness detection.
[0010] (4) The present invention provides a thickness detection device for an optical film. Through the first conversion component and the second conversion component, during the transportation of the optical film, the detector body moves back and forth, and the clamping state of the left clamping group and the right clamping group on the optical film and the working state of the first roller and the second roller relative to the optical film change accordingly. While the detector body maintains a good detection effect, cyclic and continuous thickness detection is achieved, further improving the detection efficiency.
[0011] Furthermore, the left clamping group and the right clamping group each include two clamping parts, which are respectively located on the upper and lower sides of the optical film, the clamping parts include a substrate with a strip structure, the substrate is arranged along the length direction of the optical film, and a clamping plate with a strip structure is slidably configured on opposite sides of the two substrates, the clamping plate slides along the length direction of the substrate, and the opposite sides of the two clamping plates are clamping surfaces, and a first elastic member for resetting the clamping plate is provided between the clamping plate and the substrate; The first conversion assembly includes two conversion units, and the two conversion units are respectively used to adjust the clamping parts on the upper and lower sides of the optical film. The conversion unit includes a first slide bar and two transmission assemblies, the first slide bar is slidably arranged on the bracket along the width direction of the optical film, and the bracket is provided with two first limit blocks, the first slide bar is located between the two first limit blocks, and the first slide bar can respectively resist the two first limit blocks when sliding in different directions, and the first slide bar is provided with two second limit blocks, and the detector body is provided with a pushing block, which is located between the two second limit blocks. When the detector body slides in different directions, the pushing block can respectively resist the two second limit blocks and push the first slide bar to move through the second limit block; Two transmission components are respectively arranged on both sides of the length direction of the optical film, and the transmission components include a connecting rod and a strip slider. The strip slider is arranged between the substrate and the first slide bar, and the strip slider is slid along the thickness direction of the optical film and is configured on the bracket. The lower end of the strip slider is connected to the substrate, and the end of the strip slider away from the substrate is hinged to one end of the connecting rod, and the other end of the connecting rod extends toward the direction of the first slide bar and is hinged to the first slide bar. A second elastic member is provided between the strip slider and the bracket.
[0012] Furthermore, a third elastic member is provided between the substrate and the strip-shaped slider, one end of the third elastic member is connected to the substrate, and the other end is connected to the strip-shaped slider.
[0013] Furthermore, a sliding structure is provided between the clamping plate and the base plate for reducing friction between the base plate and the clamping plate.
[0014] Furthermore, a V-shaped rod is provided between the first roller body and the second roller body, the two ends of the V-shaped rod are respectively connected to one end of the first roller body and the second roller body, the middle part of the V-shaped rod is fixedly connected to a swing rod, and the end of the swing rod away from the V-shaped rod is hinged to the detector plate body; The second conversion assembly includes two pushing units, which are respectively located on the upper and lower sides of the optical film and are used to push the two V-shaped rods to rotate synchronously.
[0015] Furthermore, the pushing unit includes a second sliding bar and a fourth elastic member, the second sliding bar is slidably configured on the detector body and can slide on the detector body along the width direction of the optical film, the bracket is provided with two third limit blocks, the two third limit blocks are located on both sides of the length direction of the second sliding bar, when the second sliding bar slides to the third limit block along the detector body, the second sliding bar can be slid along the width direction of the optical film by the action of the third limit block, the fourth elastic member is arranged between the second sliding bar and the V-shaped bar, one end of the fourth elastic member is hinged to the second sliding bar, and the other end is hinged to the middle part of the V-shaped bar; The detector body is provided with a fourth limit block for limiting the position of the fourth elastic member away from one end of the V-shaped rod. There are two fourth limit blocks, which are respectively located on both sides of the fourth elastic member away from one end of the V-shaped rod.
[0016] Furthermore, an adjustment component for adjusting the compression length of the fourth elastic member is provided between the fourth elastic member and the second sliding rod.
[0017] Furthermore, the adjustment assembly is provided with scale lines for measuring the compression length of the fourth elastic member. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 A schematic diagram of the structure of an embodiment of the present invention Figure 1 ; Figure 2 A front view of an embodiment of the present invention; Figure 3 A schematic diagram of the structure of an embodiment of the present invention Figure 2 .
[0020] Reference numerals: Bracket 1, detector body 2, first roller body 3, second roller body 4, base plate 5, splint 6, first elastic member 7, first slide bar 8, first limit block 9, second limit block 10, push block 11, connecting rod 12, strip slider 13, second elastic member 14, third elastic member 15, sliding structure 16, V-shaped rod 17, rocker arm 18, second slide bar 19, fourth elastic member 20, third limit block 21, fourth limit block 22, first connector 23, second connector 24, screw rod 25, third connector 26, limit rod 27, scale line 28. DETAILED DESCRIPTION
[0021] In view of the deficiencies in the prior art, the inventors of this case have proposed the technical solution of the present invention after long-term research and extensive practice. The following will further explain the technical solution, its implementation process and principles, etc. in conjunction with the drawings in the embodiments of this application and specific implementation cases.
[0022] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention. The embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, the present invention covers any substitution, modification, equivalent method and scheme made within the spirit, principle and scope of the present invention defined by the claims. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0023] In the description of this application, "first", "second", "third" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "a" or "an" and other similar words do not indicate a quantity limitation, but rather indicate the existence of at least one. "Include" or "comprising" and other similar words mean that the elements or objects appearing before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
[0024] In the description of this application, the terms "center," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this application. Furthermore, when positional terms such as "both sides," "outside," "upper," and "lower" are used, they should be understood to be used solely to facilitate understanding and description, taking into account that the structure may be oriented in other directions.
[0025] In the description of this application, unless otherwise clearly specified and limited, the technical or scientific terms used should have the usual meanings understood by persons with ordinary skills in the field to which this application belongs. Terms such as "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection, or an integrated connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0026] See also Figure 1-3 The present invention provides a technical solution: a device for detecting the thickness of an optical film, comprising a bracket 1 and a detector body 2, wherein a sliding track is provided on the bracket 1 along the width direction of the optical film, the detector body 2 is slidably connected to the sliding track, and a gap is provided in the middle of the detector body 2 for the optical film to pass through. Specifically, the sliding track comprises two slide rails that overlap in the vertical direction, and the two slide rails are respectively provided on the upper and lower sides of the optical film, and the detector body 2 comprises an emitter and a receiver, which are respectively slidably connected to the two slide rails, and the emitter and the receiver maintain synchronous movement, that is, the emitter and the receiver always overlap in the vertical direction, so that the signal emitted by the emitter can be accurately captured by the receiver. The space between the emitter and the receiver is the gap in the middle of the detector body 2 for the optical film to pass through.
[0027] The bracket 1 is provided with a left clamping group and a right clamping group, and the left clamping group and the right clamping group are respectively provided on both sides of the length direction of the optical film, and the bracket 1 is provided with a first conversion component. Through the first conversion component, the left clamping group and the right clamping group clamp the two sides of the optical film in a rotation manner, that is, when the left clamping group clamps the optical film, the right clamping group relaxes the optical film, and conversely, when the right clamping group clamps the optical film, the left clamping group relaxes the optical film. In addition, as the sliding direction of the detector body 2 changes, the clamping state of the left clamping group and the right clamping group on the optical film changes under the action of the first conversion component. For example, when the detector body 2 slides to the right along the sliding track, the left clamping group maintains a clamped state on the optical film, and the right clamping group maintains a relaxed state on the optical film. When the detector body 2 changes from sliding to sliding to the left along the sliding track, the left clamping group changes from a clamped state to a relaxed state on the optical film, and the right clamping group changes from a relaxed state to a clamped state on the optical film.
[0028] Two sets of leveling components are provided on the detector body 2, and the two sets of leveling components are respectively located on the upper and lower sides of the optical film. The leveling components include a first roller 3 and a second roller 4, both of which are arranged along the length direction of the optical film. The first roller 3 is located on the side of the detector body 2 close to the right clamping group, and the second roller 4 is located on the side of the detector body 2 close to the left clamping group. A second conversion component is provided between the leveling components and the bracket 1. When the opposite sides of the first rollers 3 on the two leveling components respectively abut against the upper and lower sides of the optical film, the opposite sides of the second rollers 4 on the two leveling components respectively break away from the upper and lower sides of the optical film, and under the action of the second conversion component, the working state of the first roller 3 and the second roller 4 on the optical film can be changed. For example, when the detector body 2 slides to the right along the sliding track, the opposite sides of the two first rollers 3 respectively abut against the upper and lower sides of the optical film, and the opposite sides of the two second rollers 4 respectively disengage from the upper and lower sides of the optical film. When the detector body 2 changes from sliding from the right to sliding to the left along the sliding track, the two first rollers 3 change from a contact state to a disengagement state with respect to the optical film, and the two second rollers 4 change from a disengagement state to a contact state with respect to the optical film.
[0029] When the detector body 2 moves toward the first roller 3, that is, the detector body 2 slides to the right along the sliding track, the two opposite sides of the first rollers 3 respectively abut against the upper and lower sides of the optical film and move synchronously with the detector body 2. At this time, the left clamping group is in a clamping state with the optical film, and the clamping surface can move synchronously with the optical film. Because the left clamping group maintains a clamping state on the optical film during this process, the friction between the first roller 3 and the optical film during the movement of the detector body 2 can apply a lateral pulling force to the optical film, so that the optical film located in the gap of the detector body 2 (i.e., between the emitter and the receiver) remains relatively flat, thereby reducing the possibility of fluctuation and tilting of the optical film due to airflow disturbances or mechanical vibrations. This in turn reduces the possibility of an increase in the length of the X-ray penetration path, thereby improving the accuracy of detection. It should be noted that since the friction between the first roller 3 and the optical film applies lateral tension to the optical film, the tensile strength is not large and can be ignored, and the thickness of the optical film will not be affected during the stretching process. It should be noted that the clamping force applied by the first roller 3 to the optical film should not affect the normal transportation of the optical film.
[0030] In addition, because the two first rollers 3 are in contact with the optical film on opposite sides and the two first rollers 3 move with the detector body 2, the first rollers 3 can clean the upper and lower sides of the optical film during movement, reducing the attachments on the surface of the optical film, reducing the possibility of attachments affecting the penetration of X-rays, and improving the accuracy of thickness detection. It should be noted that since the first rollers 3 are located in front of the movement direction of the detector body 2, the first rollers 3 are cleaned first and then the thickness is detected. At the same time, since the left clamping group maintains a clamping state on the optical film while its clamping surface can also move synchronously with the optical film, this setting can realize thickness detection during the transportation of the optical film, improving the efficiency of thickness detection.
[0031] When the detector body 2 moves toward the second roller body 4, the two opposite sides of the second roller body 4 respectively abut against the upper and lower sides of the optical film and move synchronously with the detector body 2. At this time, the right clamping group is in a clamping state with the optical film, and the clamping surface can move synchronously with the optical film. Similarly, when the detector body 2 moves toward the second roller body 4 (i.e., the detector body 2 slides to the left along the sliding track), it also has the function of flattening and cleaning the optical film to improve the accuracy of thickness detection. At the same time, because the right clamping group maintains a clamping state on the optical film while also moving synchronously with the optical film, this configuration can also achieve thickness detection during the optical film conveyance process, and also improves the efficiency of thickness detection.
[0032] Under the action of the first conversion assembly and the second conversion assembly, as the direction of movement of the detector body 2 changes, the clamping state of the left and right clamping groups on the optical film, as well as the working state of the first roller 3 and the second roller 4 relative to the optical film, change accordingly. Through the first and second conversion assemblies, during the optical film conveying process, the detector body 2 moves back and forth, and the clamping state of the left and right clamping groups on the optical film, as well as the working state of the first roller 3 and the second roller 4 relative to the optical film, change accordingly. While the detector body 2 maintains the above-mentioned good detection effect, it achieves cyclic and continuous thickness detection, greatly improving detection efficiency.
[0033] In this embodiment, both the left and right clamping groups include two clamping sections, located at the upper and lower sides of the optical film, respectively. The clamping sections include a strip-shaped substrate 5 disposed along the length of the optical film. A strip-shaped clamping plate 6 is slidably disposed on opposing sides of each substrate 5. The clamping plates 6 slide along the length of the substrate 5, with the opposing sides of the clamping plates 6 forming a clamping surface. A first elastic member 7 is disposed between the clamping plates 6 and the substrate 5 to reposition the clamping plates 6. When the two substrates 5 are brought together to clamp the optical film, the clamping plates 6 abut against the upper and lower sides of the optical film, respectively. The movement of the optical film drives the clamping plates 6 to move synchronously, causing the clamping plates 6 to slide relative to the substrate 5. The first elastic member 7 is elastically stressed during this process. When the two substrates 5 are moved apart to release the optical film, the clamping plates 6 are elastically repositioned under the elastic force of the first elastic member 7. Specifically, the first elastic member 7 is an elastic cord, one end of which is fixedly connected to the clamping plate 6 and the other end to the substrate 5.
[0034] The first conversion assembly includes two conversion units, which are respectively used to adjust the clamping parts on the upper and lower sides of the optical film. The conversion units include a first slide bar 8 and two transmission assemblies. The first slide bar 8 is configured to slide along the width direction of the optical film on the bracket 1. Specifically, the first slide bar 8 has a slot extending through it along the width direction of the optical film. A clip is fixedly connected to the bracket 1 along the width direction of the optical film. The clip is located within the slot. The clip and the slot can slide relative to each other, so that the first slide bar 8 can slide along the width direction of the optical film on the bracket 1. Two first limit blocks 9 are provided on the bracket 1. The first slide bar 8 is located between the two first limit blocks 9. The two first limit blocks 9 and the first slide bar 8 are on the same horizontal line. When the first slide bar 8 slides in different directions, it can respectively abut against the two first limit blocks 9. Two second limit blocks 10 are provided on the first slide bar 8, and a push block 11 is provided on the detector body 2. The push block 11 is located between the two second limit blocks 10. When the detector body 2 slides in different directions, the push block 11 can respectively abut against the two second limit blocks 10, and push the first slide bar 8 to move through the second limit blocks 10. For example, when the detector body 2 slides to the right, the push block 11 can push the first slide bar 8 to slide to the right through the right second limit block 10 so that the right end of the second slide bar 19 abuts against the right first limit block 9. Similarly, when the detector body 2 slides to the left, the push block 11 can push the first slide bar 8 to slide to the left through the left second limit block 10 so that the left end of the second slide bar 19 abuts against the left first limit block 9.
[0035] Two transmission assemblies are disposed on either side of the optical film's length and are used to adjust the two clamping portions on the film's upper side. The transmission assemblies include a connecting rod 12 and a strip-shaped slider 13. The strip-shaped slider 13 is disposed between the substrate 5 and the first slide bar 8 and slides along the thickness direction of the optical film on the bracket 1. The lower end of the strip-shaped slider 13 is connected to the substrate 5. The end of the strip-shaped slider 13 facing away from the substrate 5 is hinged to one end of the connecting rod 12. The other end of the connecting rod 12 extends toward the first slide bar 8 and is hinged to the first slide bar 8. A second elastic member 14 is disposed between the strip-shaped slider 13 and the bracket 1. Specifically, the second elastic member 14 is a first spring, one end of which is fixedly connected to the end of the strip-shaped slider 13 facing away from the substrate 5 and the other end to the bracket 1. The first spring is always in an elastically stretched state.
[0036] When the left end of the first slide bar 8 abuts against the first limit block 9 on the left, the left clamping group maintains a clamping state for the optical film, and the right clamping group maintains a loose state for the optical film. When the detector body 2 slides from left to right, the pushing block 11 can push the first slide bar 8 to slide to the right through the second limit block 10 on the right. During the right sliding process, the first slide bar 8 causes the two left strip-shaped sliders to move away from each other through the left connecting rod 12, and then the two left substrates 5 move away from each other to change the left clamping group from a clamping state to a loose state. At the same time, during the right sliding process, the first slide bar 8 causes the two right strip-shaped sliders to move relative to each other through the two right connecting rods 12, and then the two right substrates 5 move relative to each other to change the right clamping group from a loose state to a clamping state. The second slide bar 19 slides until the right end abuts against the first limit block 9 on the right. It should be noted that when the right end of the second slide bar 19 rests against the first limit block 9 on the right, the connecting rod 12 on the right is not parallel to the strip slider, but slightly tilted to the right. (The larger tilt angle shown in the figure is just for the convenience of showing the tilt state of the connecting rod 12. In actual production, the tilt angle is extremely small, so it will not have much impact on the sliding of the strip slider. The sliding distance of the strip slider can be ignored, and the change in the clamping force of the splint 6 caused by the tilt can also be ignored.) Through this design, under the elastic pulling action of the second elastic member 14, the strip slider will be pulled toward the first slide bar 8, so that the first slide bar 8 is tightly pressed against the first limit block 9 on the right under the transmission action of the connecting rod 12, and finally the substrate 5 is locked to maintain the clamping state of the splint 6 on the optical film.
[0037] Similarly, when the detector body 2 slides to the left, the pushing block 11 can push the first slide bar 8 to slide to the left through the second limit block 10 on the left. When the first slide bar 8 slides to the left, the two strip-shaped sliders on the right move away from each other through the right connecting rod 12, and then the two substrates 5 on the right move away from each other to change the right clamping group from the clamping state to the loose state. At the same time, when the first slide bar 8 slides to the left, the two strip-shaped sliders on the left move relative to each other through the two connecting rods 12 on the left, and then the two substrates 5 on the left move relative to each other to change the left clamping group from the loose state to the clamping state. The second slide bar 19 slides until the left end abuts against the first limit block 9 on the left.
[0038] In this embodiment, a third elastic member 15 is disposed between the substrate 5 and the strip-shaped slider 13. One end of the third elastic member 15 is connected to the substrate 5, and the other end is connected to the strip-shaped slider 13. Specifically, the third elastic member 15 is a second spring, one end of which is fixedly connected to the substrate 5, and the other end is fixedly connected to the strip-shaped slider 13. The third elastic member 15 provides flexible clamping of the optical film by the clamping plate 6, reducing damage to the optical film caused by excessive clamping force.
[0039] In this embodiment, in order to reduce the friction between the base plate 5 and the clamping plate 6, a sliding structure 16 is provided between the clamping plate 6 and the base plate 5. Specifically, a slide groove is provided on both sides of the base plate 5 along the length direction. The slide groove extends along the length direction of the base plate 5. A slide bar is provided inside the slide groove and can slide along the length direction of the slide groove. A ball is embedded in the top wall of the slide groove. The ball is the sliding structure 16, and the lower end of the ball abuts the slide bar.
[0040] In this embodiment: a V-shaped rod 17 is provided between the first roller body 3 and the second roller body 4, and the two ends of the V-shaped rod 17 are respectively connected to one end of the first roller body 3 and the second roller body 4, the tips of the two V-shaped rods 17 are arranged back to back, and a rocker rod 18 is fixedly connected to the middle of the V-shaped rod 17. The two rocker rods 18 extend back to back in opposite directions away from one end of the V-shaped rod 17, and the rocker rod 18 is hinged to the detector plate at one end away from the V-shaped rod 17.
[0041] The second conversion assembly includes two pushing units, which are respectively located on the upper and lower sides of the optical film and are used to push the two V-shaped rods 17 to rotate synchronously. By using the two pushing units and synchronously rotating the two V-shaped rods 17, the vertical positions of the two first rollers 3 and the two second rollers 4 can be changed. When the two first rollers 3 move closer to each other, the two second rollers 4 move away from each other. During the process of the two first rollers 3 moving closer to each other, the opposite sides of the two first rollers 3 respectively abut against the upper and lower sides of the optical film. Similarly, when the two second rollers 4 move closer to each other, the two first rollers 3 move away from each other. During the process of the two second rollers 4 moving closer to each other, the opposite sides of the two second rollers 4 respectively abut against the upper and lower sides of the optical film. It should be noted that the operation of the pushing unit should be coordinated with the turning action of the detector body 2, that is, when the detector body 2 is about to turn, but before the turning is completed, the pushing unit is used to complete the conversion of the working state of the first roller 3 and the second roller 4 relative to the optical film.
[0042] In this embodiment, the ends of the V-shaped rod 17 are hinged to one end of the first roller 3 and the second roller 4. The first roller 3 and the second roller 4 can rotate relative to the V-shaped rod 17, thereby converting sliding friction of the first roller 3 (or the second roller 4) into rolling friction during operation. This reduces the friction between the first roller 3 and the second roller 4 and the optical film during movement, thereby reducing the effect of friction on the thickness of the optical film caused by the lateral stretching of the optical film.
[0043] In addition, the first roller body and the second roller body are made to have the function of absorbing impurities through electrostatic treatment, so that the first roller body and the roller body can absorb impurities synchronously during the rotation process.
[0044] In this embodiment: the pushing unit includes a second slide bar 19 and a fourth elastic member 20. The second slide bar 19 is slidably configured on the detector body 2 and can slide on the detector body 2 along the width direction of the optical film. Two third limit blocks 21 are provided on the bracket 1. The two third limit blocks 21 are located on both sides of the length direction of the second slide bar 19. When the second slide bar 19 slides to the third limit block 21 along the detector body 2, the second slide bar 19 can slide along the width direction of the optical film through the action of the third limit block 21. The fourth elastic member 20 is arranged between the second slide bar 19 and the V-shaped rod 17. One end of the fourth elastic member 20 is hinged to the second slide bar 19, and the other end is hinged to the middle part of the V-shaped rod 17. The fourth elastic member 20 is in an elastically compressed state.
[0045] The detector body 2 is provided with a fourth limit block 22 for limiting the position of the fourth elastic member 20 away from one end of the V-shaped rod 17. There are two fourth limit blocks 22, and the two fourth limit blocks 22 are respectively located on both sides of the end of the fourth elastic member 20 away from the V-shaped rod 17. Specifically, the fourth limit block 22 is a mounting sleeve, which is mounted outside the second slide bar 19 and fixedly connected to the detector body 2. The hinge point between the end of the fourth elastic member 20 away from the V-shaped rod 17 and the second slide bar 19 is located between the two mounting sleeves, and the hinge point between the end of the rocker arm 18 away from the V-shaped rod 17 and the detector plate is located on the midline of the connection line between the two mounting sleeves. When the fourth elastic member 20 moves away from one end of the V-shaped rod 17 to the mounting sleeve position, the mounting sleeve can limit its position.
[0046] During the movement of the detector body 2 to the right, the second slide bar 19 is moved synchronously with it. When the right end of the second slide bar 19 moves to the third limit block 21 on the right, the second slide bar 19 will be pushed to slide to the left under the action of the third limit block 21 on the right. The left sliding of the second slide bar 19 will drive the fourth elastic member 20 to move synchronously away from one end of the V-shaped rod 17. When the fourth elastic member 20 moves away from one end of the V-shaped rod 17 from the right mounting sleeve to the left mounting sleeve, the elastic traction direction of the fourth elastic member 20 on the V-shaped rod changes, causing the position of the first roller 3 and the second roller 4 to change, that is, the opposite side of the two first rollers 3 changes from the contact state to the disengagement state with the optical film, and the opposite side of the two second rollers 4 changes from the disengagement state to the contact state with the optical film, thereby realizing the conversion of the working state of the first roller 3 and the second roller 4 on the optical film. Similarly, during the movement of the detector body 2 to the left, through the above structure, the two first rollers 3 on one side of the optical film change from a disengaged state to a contact state, while the two second rollers 4 on the other side change from a contact state to a disengaged state.
[0047] In this embodiment, an adjustment assembly is provided between the fourth elastic member 20 and the second slide bar 19 for adjusting the compressed length of the fourth elastic member 20. By adjusting the compressed length of the fourth elastic member 20 using the adjustment assembly, the pressure applied by the two first rollers 3 (or the two second rollers 4) to the optical film during contact can be varied, thereby altering the friction between the two first rollers 3 (or the two second rollers 4) and the optical film during movement. This allows for adaptive adjustments based on the specific conditions of different deposits on the optical film surface. For example, if the optical film surface is heavily contaminated, the adjustment assembly can be used to increase the compression of the fourth elastic member 20, thereby increasing the pressure applied by the two first rollers 3 (or the two second rollers 4) to the optical film during contact. This increased pressure improves the cleaning effect of the first rollers 3 (or the second rollers 4) on the optical film surface during movement. It should be noted that, since the sliding friction between the first roller 3 (or the second roller 4) and the optical film applies a lateral pulling force to the optical film, and the magnitude of the sliding friction between the first roller 3 (or the second roller 4) and the optical film is positively correlated with the pressure applied to the optical film when the first roller 3 (or the two second rollers 4) are in contact with the optical film, the adjustment component changes the compression length of the fourth elastic member 20 to change the pressure applied to the optical film when the two first rollers 3 (or the two second rollers 4) are in contact with the optical film. The range should be such that the lateral pulling force caused does not affect the thickness of the optical film and does not affect the normal transportation of the optical film.
[0048] Specifically, the fourth elastic member 20 is a third spring, with a first connector 23 and a second connector 24 fixedly connected at both ends of the third spring, respectively. The first connector 23 is hinged to the middle portion of the V-shaped rod 17. The adjustment assembly includes a screw 25, a third connector 26, and a limit rod 27. The limit rod 27 is arranged along the length of the third spring. One end of the limit rod 27 is fixedly connected to the third connector 26, and the other end passes through the second connector 24. The third connector 26 is hinged to the second slide bar 19. The screw 25 is rotatably connected to the third connector 26. The screw 25 passes through the second connector 24 and is threadedly engaged with the second connector 24. Rotating the screw 25 can cause the second connector 24 to slide along the limit rod 27, and during the sliding process, the elastic compression length of the fourth elastic member 20 is changed.
[0049] In this embodiment, in order to accurately measure the elastic compression length of the fourth elastic member 20, the adjustment assembly is provided with a scale line 28 for measuring the compression length of the fourth elastic member 20. Specifically, the scale line 28 is provided on the limiting rod 27 along the length direction of the limiting rod 27.
[0050] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make some simple deductions or substitutions without departing from the concept of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the scope of protection of the present invention.
Claims
1. A device for measuring the thickness of an optical film, comprising a bracket and a detector body, wherein the bracket is provided with a sliding track along the width direction of the optical film, the detector body is slidably connected to the sliding track, and a gap is defined in the middle of the detector body for the optical film to pass through, characterized in that: The bracket is provided with a left clamping group and a right clamping group, and the left clamping group and the right clamping group are respectively provided on both sides of the length direction of the optical film, and the bracket is provided with a first conversion component; Two groups of leveling components are provided on the detector body, and the two groups of leveling components are respectively located on the upper and lower sides of the optical film. The leveling components include a first roller body and a second roller body both arranged along the length direction of the optical film, the first roller body is located on the side of the detector body close to the right clamping group, and the second roller body is located on the side of the detector body close to the left clamping group. A second conversion component is provided between the leveling component and the bracket; When the detector body moves toward the direction of the first roller, the opposite sides of the two first rollers respectively abut against the upper and lower sides of the optical film and move synchronously with the detector body. At this time, the left clamping group is in a clamping state with the optical film and the clamping surface can move synchronously with the optical film. When the detector body moves toward the direction of the second roller, the opposite sides of the two second rollers respectively abut against the upper and lower sides of the optical film and move synchronously with the detector body. At this time, the right clamping group is in a clamping state with the optical film and the clamping surface can move synchronously with the optical film. Under the action of the first conversion component and the second conversion component, as the movement direction of the detector body changes, the clamping states of the left clamping group and the right clamping group on the optical film and the working states of the first roller and the second roller relative to the optical film change accordingly.
2. The device for detecting thickness of an optical film according to claim 1, wherein: The left clamping group and the right clamping group each include two clamping parts, the two clamping parts are respectively located on the upper and lower sides of the optical film, the clamping parts include a strip-shaped substrate, the substrate is arranged along the length direction of the optical film, and a strip-shaped clamping plate is slidably configured on opposite sides of the two substrates, the clamping plate slides along the length direction of the substrate, and the opposite sides of the two clamping plates are clamping surfaces, and a first elastic member for resetting the clamping plate is provided between the clamping plate and the substrate; The first conversion assembly includes two conversion units, and the two conversion units are respectively used to adjust the clamping parts on the upper and lower sides of the optical film. The conversion unit includes a first slide bar and two transmission assemblies, the first slide bar is slidably arranged on the bracket along the width direction of the optical film, and the bracket is provided with two first limit blocks, the first slide bar is located between the two first limit blocks, and the first slide bar can respectively resist the two first limit blocks when sliding in different directions, and the first slide bar is provided with two second limit blocks, and the detector body is provided with a pushing block, which is located between the two second limit blocks. When the detector body slides in different directions, the pushing block can respectively resist the two second limit blocks and push the first slide bar to move through the second limit block; Two transmission components are respectively arranged on both sides of the length direction of the optical film, and the transmission components include a connecting rod and a strip slider. The strip slider is arranged between the substrate and the first slide bar, and the strip slider is slid along the thickness direction of the optical film and is configured on the bracket. The lower end of the strip slider is connected to the substrate, and the end of the strip slider away from the substrate is hinged to one end of the connecting rod, and the other end of the connecting rod extends toward the direction of the first slide bar and is hinged to the first slide bar. A second elastic member is provided between the strip slider and the bracket.
3. The device for detecting thickness of an optical film according to claim 2, wherein: A third elastic member is provided between the substrate and the strip-shaped slider. One end of the third elastic member is connected to the substrate, and the other end is connected to the strip-shaped slider.
4. The device for detecting thickness of an optical film according to claim 2, wherein: A sliding structure is provided between the clamping plate and the base plate for reducing friction between the base plate and the clamping plate.
5. The device for detecting thickness of an optical film according to any one of claims 2 to 4, characterized in that: A V-shaped rod is provided between the first roller body and the second roller body, the two ends of the V-shaped rod are respectively connected to one end of the first roller body and the second roller body, the middle part of the V-shaped rod is fixedly connected to a swing rod, and the end of the swing rod away from the V-shaped rod is hinged to the detector plate body; The second conversion assembly includes two pushing units, which are respectively located on the upper and lower sides of the optical film and are used to push the two V-shaped rods to rotate synchronously.
6. The device for detecting thickness of an optical film according to claim 5, characterized in that: Both ends of the V-shaped rod are hinged to one end of the first roller body and the second roller body respectively.
7. The device for detecting thickness of an optical film according to claim 5, wherein: The pushing unit includes a second sliding bar and a fourth elastic member, the second sliding bar being slidably configured on the detector body and being capable of sliding on the detector body along the width direction of the optical film, the bracket being provided with two third limit blocks, the two third limit blocks being located on both sides in the length direction of the second sliding bar, and when the second sliding bar slides to the third limit block along with the detector body, the second sliding bar can slide along the width direction of the optical film through the action of the third limit block, the fourth elastic member being arranged between the second sliding bar and the V-shaped bar, one end of the fourth elastic member being hinged to the second sliding bar, and the other end being hinged to the middle of the V-shaped bar; The detector body is provided with a fourth limit block for limiting the position of the fourth elastic member away from one end of the V-shaped rod. There are two fourth limit blocks, which are respectively located on both sides of the fourth elastic member away from one end of the V-shaped rod.
8. The device for detecting thickness of an optical film according to claim 7, characterized in that: An adjusting component for adjusting the compression length of the fourth elastic member is provided between the fourth elastic member and the second sliding rod.
9. The device for detecting thickness of an optical film according to claim 8, characterized in that: The adjustment assembly is provided with scale lines for measuring the compression length of the fourth elastic member.