A detection device and a detection method for detecting a clamp of a panel

Abstract

The application relates to a detection device and a detection method for detecting a clamp of a panel, the clamp comprising an inner support and an outer frame, the detection device comprising a detection support provided with an electric arm; a detection top frame connected to the top of the detection support, the detection support having a detection station between one side of the electric arm and the detection top frame; a laser sensor connected to the detection top frame, the laser sensor having at least two, the emitting ends of the two laser sensors being directed towards the frame and / or the support to emit laser beams towards the frame; a fiber sensor connected to the electric arm; a pair of fiber sensors arranged on the two sides of the support, the electric arm driving the fiber sensors to move at least partially along the length direction of the support; and a controller electrically connected with the electric arm, the laser sensor and the fiber sensor, the controller being configured to calculate the difference between the test values A1 and A0 of the clamp obtained by the laser sensor and / or the fiber sensor and judge whether the deformation amount exceeds the standard.

Description

Technical Field

[0001] This invention relates to a testing device and method for fixtures used in the panel industry, belonging to the field of panel manufacturing technology. Background Technology

[0002] With the expansion of production capacity for smartphones, automotive screens, foldable screens, and industrial control display panels, ultra-thinness and flexibility have become mainstream trends. In order to improve the display effect and increase the quality of the screen, there are usually certain requirements for the position of the polarizer, the edge chipping of the glass substrate, the color difference of the display area, and the normal operation of the module.

[0003] During panel manufacturing, a fixture is installed underneath to support the panel. Displacement at a certain position of the fixture can often lead to defects in the panel.

[0004] In the existing technology, one method for detecting fixture deformation is traditional manual visual inspection, which cannot be operated continuously for 24 hours and the detection results are not accurate enough with large errors; another detection method is contact fixture inspection, which is easy to apply force to the fixture during the inspection process, causing certain influences. For ultra-thin display panel fixtures, it is difficult to control and avoid damaging the fixture.

[0005] Existing panel fixture inspection methods are relatively limited. Single laser sensors cannot accommodate multiple sampling points within the fixture, while single fiber optic sensors have slow scanning speeds and require multiple sampling points, failing to meet the demands of automated high-speed production lines for rapid inspection of large areas. As panels evolve towards thinner and lighter designs, fixtures are also increasingly adopting thinner support pillars and frames. The entire production process involves multiple interconnected steps, including vacuum bonding, high-temperature baking, mechanical clamping, suction cup transfer, and high-speed assembly line vibration. This can lead to problems such as fixtures experiencing instantaneous pressure / heat-induced springback deformation during these processes, interfering with online detection and resulting in frequent misjudgments and scrapping. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a detection device and a detection method for a fixture used for detecting panels.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A detection device for a clamp for detecting a panel, the clamp being connected to the bottom of the panel, the clamp including an internal support column and an external frame, characterized in that it includes: a detection bracket having an electric arm; a detection top frame connected to the top of the detection bracket, the detection station being located between the side of the detection bracket with the electric arm and the detection top frame, the clamp being installed in the detection station for detection; a laser sensor connected to the detection top frame, having at least two laser sensors, the emitting ends of the two laser sensors facing the frame and / or the support column to emit laser light towards the frame; and an optical fiber sensor having at least a pair, the optical fiber sensor being connected to the electric arm; when the clamp is installed in the detection station, the pair of optical fiber sensors are located on both sides of the support column, and the electric arm drives the optical fiber sensors to move at least partially along the length direction of the support column; The controller is electrically connected to the electric arm, laser sensor, and fiber optic sensor. The laser sensor and fiber optic sensor of this application detect the deformation of the fixture under test and the deformation of the standard fixture to determine whether the deformation of the fixture exceeds the standard and whether the fixture is qualified. Since the fiber optic sensor moves and scans the entire position of the support column or outer frame under the drive of the electric arm, the support column inside the fixture can be scanned more comprehensively, and the judgment result is more accurate. The accuracy of the laser sensor and fiber optic sensor can be selected according to the needs. Moreover, neither the fiber optic sensor nor the laser sensor directly contacts the fixture, which can effectively reduce the deformation caused by contact during the detection process.

[0008] In some embodiments of this application, the frame includes a top frame connected to the panel, and a laser sensor is disposed on the outside of the top frame, with the top frame located within the emission area of ​​the laser sensor; at least two laser sensors are disposed on one side of the frame so that multiple positions of a top frame can be detected by the laser sensor, thereby making the detection results more accurate.

[0009] In some embodiments of this application, the support column includes a longitudinal support column extending along the length of the detection bracket. Fiber optic sensors are disposed on both sides of the longitudinal support column, with at least two rows of fiber optic sensors arranged vertically, allowing multiple rows of sensors to detect different parts of the longitudinal support column. Driven by an electric arm, the two rows of fiber optic sensors move upwards, simultaneously moving the deformation of the support column of the scanning fixture upwards, reducing scanning time and adapting to the production line requirements of this application where the fixture needs to quickly detect whether the deformation exceeds the standard. Optionally, the number of fiber optic sensors is not limited to two rows; it can be configured as three, four, or five rows arranged vertically, depending on the height of the fixture, to meet the requirements of the longitudinal support column of the high-speed scanning fixture.

[0010] In some embodiments of this application, there are m longitudinal supports; the fiber optic sensors are arranged in pairs in m columns, with multiple pairs of fiber optic sensors arranged vertically in each column. One column of fiber optic sensors is respectively set on both sides of the longitudinal support to emit light to the longitudinal support. The longitudinal support is the part to be detected by the fixture. In order to detect the deformation of each longitudinal support, fiber optic sensors are provided on both sides of each longitudinal support.

[0011] In some embodiments of this application, the minimum detectable object deformation size standard of the fiber optic sensor is a, where φ0.03mm≤a≤φ0.1mm. The minimum detectable object size of the fiber optic sensor can be selected according to actual needs. 0.1mm is the maximum degree of deformation. Exceeding this size will have a significant impact on the display effect of the panel.

[0012] This application also provides a method for detecting fixtures for testing panels. The method employs a device for detecting fixtures for testing panels. The controller is configured to: pre-enter a test value of a fixture that has not undergone deformation as a preset reference value A0; when the fixture is fixed at the testing station, receive the current test value A1 of the fixture being tested obtained by a laser sensor and / or a fiber optic sensor; calculate the difference between A1 and A0; and determine the relationship between the difference P1 and the preset difference P0. If P1 > the preset difference P0, it is determined that the deformation at that location is large and unqualified; if P1 ≤ the preset difference P0, it is determined that the deformation at that location is small. That is, the deformation is determined based on the difference between the current test value and the preset value. This method is scientific and numerically based, does not rely on human visual judgment, and yields more accurate results.

[0013] In some embodiments of this application, the reference value A0 can be the displacement, height difference, and bending amount of the target measured point of the standard fixture, and the measured value A1 can be the displacement, height difference, and bending amount of the measured point of the current fixture. The displacement, height difference, and bending amount of the measured point can clearly reflect the deformation state of the measured point.

[0014] In some embodiments of this application, the controller is configured to: pre-store the reference optical signal B0 of the fiber optic sensor under unobstructed standard conditions; receive the optical signal B1 detected and collected by the fiber optic sensor at a certain position, determine the magnitude relationship between the detected optical signal B1 and the reference optical signal B0, and when B1≥B0, receive the measurement data of the fiber optic sensor about that position point, and determine whether there is a deformation problem inside the fixture by the difference between the positions; if B1<B0, do not accept the measurement data of the fiber optic sensor about that position point, which can reduce the calculation load and process of the controller. Only when B1≥B0, other measurement data of that position point are received and calculated.

[0015] In some embodiments of this application, the controller is also electrically connected to the transmission mechanism. The controller is configured to: receive detection values ​​of the fixture uploaded by the laser sensor and / or the fiber optic sensor; when at least two different detection values ​​are received within a period of time, output a signal to the electric arm to make the fiber optic sensor detect again for a period of time, and output a signal to the transmission mechanism to keep the transmission mechanism stationary so that the fixture is detected again by the laser sensor in the detection station.

[0016] If the same test result is received within the time limit for retesting, it is determined that the previous test result was due to the instability of the residual deformation of the fixture. The deformation of the fixture is then determined based on the current test result. This method helps to filter out test errors caused by the static residual deformation of the fixture, thereby enhancing the accuracy of the measurement results.

[0017] In some embodiments of this application, the controller is configured to receive detection values ​​of the fixture uploaded by the laser sensor and / or fiber optic sensor, and within a preset time T1, when at least K different fixtures are detected to have excessive deformation at the same position, it is determined that the fixture may have a production error at that position, and the user is warned to pay attention to whether there is a problem of stress concentration and / or micro-deformation accumulation defects, so as to solve the quality problem of the fixture from the source of production.

[0018] The beneficial effects of the detection device for the clamp used to detect panels in this application are:

[0019] The inspection bracket is equipped with an electric arm; an inspection top frame is connected to the top of the inspection bracket, and the inspection station is located between the side of the inspection bracket with the electric arm and the inspection top frame. The fixture is installed in the inspection station for inspection; a laser sensor is connected to the inspection top frame, and there are at least two laser sensors, with the emitting ends of the two laser sensors facing the frame and / or the support column to emit laser light towards the frame; there are at least one pair of fiber optic sensors connected to the electric arm; when the fixture is installed in the inspection station, the pair of fiber optic sensors are located on both sides of the support column, and the electric arm drives the fiber optic sensors to move at least partially along the length of the support column; the controller is electrically connected to the electric arm, laser sensors, and fiber optic sensors. Because the fiber optic sensors move and scan the entire position of the support column or outer frame under the drive of the electric arm, the support column inside the fixture can be scanned more comprehensively, and the judgment result is more accurate. The accuracy of the laser sensor and the fiber optic sensor can be selected according to the requirements. Moreover, neither the fiber optic sensor nor the laser sensor directly contacts the fixture, which can effectively reduce the deformation caused by contact during the inspection process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the structure of some of the testing devices, fixtures, and panels used in this application. Figure 2This is a structural schematic diagram from another perspective showing the cooperation between some of the testing devices, fixtures, and panels in this application; Figure 3 This is a schematic diagram showing the structure of the testing device, fixture, and panel in this application. Figure 4 for Figure 3 The front view; Figure 5 This is a schematic diagram illustrating the cooperation between the detection bracket, electric arm, and fiber optic sensor of this application; Figure 6 This is a flowchart of a detection method for a fixture used to detect panels according to this application; Figure 7 This is a flowchart of a detection method for a fixture used to detect panels according to this application; The specific labels on the drawings are: 1. Laser sensor; 2. Fiber optic sensor; 3. Fixture; 31. Frame; 311. Top frame; 32. Support column; 321. Horizontal support column; 322. Vertical support column; 4. Panel; 5. Detection bracket; 6. Detection top frame; 7. Electric arm. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0023] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0024] In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] To address the limitations of existing technologies, this embodiment provides a technical solution. The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] refer to Figures 1-5 This application provides a detection device for a clamp 3 for detecting a panel 4.

[0028] A detection device for a clamp 3 for detecting a panel 4. The clamp 3 is connected to the bottom of the panel 4. The clamp 3 includes an internal support 32 and an external frame 31. The deformation of the clamp 3 can directly affect the panel 4. Therefore, it is very important to conduct comprehensive and accurate detection of the deformation of the clamp 3.

[0029] The testing device includes a testing bracket 5 and a testing top frame 6. The testing bracket 5 is equipped with an electric arm 7. The testing top frame 6 is connected to the top of the testing bracket 5. The testing station is located between the side of the testing bracket 5 with the electric arm 7 and the testing top frame 6. The fixture 3 is installed in the testing station and is tested.

[0030] The detection device includes a laser sensor 1, which is connected to the detection top frame 6. There are at least two laser sensors 1, and the emitting ends of the two laser sensors 1 are facing the frame 31 and / or the support column 32 to emit lasers toward the frame 31.

[0031] In some embodiments, the laser sensor 1 emits a directional laser beam toward the frame 31 to illuminate the surface of the frame 31 of the fixture 3. A photosensitive element is provided at the relative position of the laser sensor 1. The photosensitive element receives the changes in the position of the reflected light spot and the optical path difference, thereby obtaining the current displacement, height difference and bending amount of the object being measured.

[0032] The drawbacks of laser sensor 1 are that it has few points and a large size, making it inconvenient to measure multiple points of the internal support column 32. The beam cannot penetrate into the narrow interlayer inside the fixture 3, so it cannot capture the micro-stress of the internal support column 32. It is not as good as fiber optic sensor 2, which is smaller in size and easier to install inside the fixture 3. It is also not as good as fiber optic sensor 2, which can measure multiple points of the support column 32 from bottom to top under the drive of electric arm 7.

[0033] Laser sensor 1 is used to detect the deformation of frame 31, which is generally caused by compression. Laser sensor 1 does not need to be installed in pairs and is suitable for installation on the outer side of frame 31. Laser sensor 1 can directly obtain the distance between the object and the frame 31 by detecting the frame 31, which is an accurate value.

[0034] The detection device includes fiber optic sensors 2, which have at least one pair and are connected to an electric arm 7. When the fixture 3 is installed at the detection station, the pair of fiber optic sensors 2 are located on both sides of the support column 32. The electric arm 7 drives the fiber optic sensors 2 to move at least partially along the length of the support column 32 so that the optical signal emission area of ​​the fiber optic sensors 2 covers the support column 32 from bottom to top, so that more points on the support column 32 can be measured by the fiber optic sensors 2.

[0035] The drawback of fiber optic sensor 2 is that the probe can only scan layer by layer at a single point, and cannot measure distance over a large range. It cannot quickly collect data on the overall warp and height difference of a large-volume frame 31. The detection efficiency cannot match the pace of automated high-speed production lines, and there is a problem of slow testing for large-range distance measurement.

[0036] Fiber optic sensors need to be installed in pairs. They mainly detect the presence of objects but cannot pinpoint specific values. Fiber optic sensor 2 is used inside fixture 3. The controller makes judgments based on the encoder feedback from the servo motor. The servo motor is electrically connected to fiber optic sensor 2 and drives it to move upwards. Fiber optic sensor 2 is used to detect the deformation of the internal support column 32, which is generally caused by the weight of the internal cargo.

[0037] The controller is electrically connected to the electric arm 7, the laser sensor 1, and the fiber optic sensor 2. The laser sensor 1 and the fiber optic sensor 2 of this application detect the deformation of the fixture 3 under test and the deformation of the standard fixture 3 to determine whether the deformation of the fixture 3 exceeds the standard and whether the fixture 3 is qualified. Since the fiber optic sensor 2 moves to scan the entire position of the support column 32 or the outer frame under the drive of the electric arm 7, the support column 32 inside the fixture 3 can be scanned more comprehensively, and the judgment result is more accurate. The accuracy of the laser sensor 1 and the fiber optic sensor 2 can be selected according to the needs. Moreover, neither the fiber optic sensor 2 nor the laser sensor 1 directly contacts the fixture 3, which can effectively reduce the deformation caused by contact during the detection process.

[0038] The advantages of using this detection device, consisting of laser sensor 1 and a controller, are fast measurement response and good linearity. This is because the laser sensor 1 uploads real-time data values ​​to the controller, which quickly calculates the difference. Laser sensor 1, a photosensitive element, can be configured in multiple locations, suitable for large-area, multi-point rapid scanning. It can accurately capture macroscopic deformations such as overall warpage and edge sagging of the fixture 3. In the panel 4 manufacturing process, dust and slight vibrations are frequently encountered. Multi-point measurement by laser sensor 1 reduces the impact of dust and vibration on the measurement, exhibits strong anti-interference capabilities, and is a mainstream detection unit highly suitable for production lines.

[0039] In some embodiments of this application, the frame 31 includes a top frame 311 connected to the panel 4, and the laser sensor 1 is disposed on the outside of the top frame 311. The top frame 311 is located within the emission area of ​​the laser sensor 1. At least two laser sensors 1 are disposed on one side of the frame 31 so that multiple positions of a top frame 311 can be detected by the laser sensor 1, so that the detection results are more accurate.

[0040] Specifically, the top frame 311 is quadrilateral. In some embodiments, each of the four sides of the top frame 311 corresponds to two laser sensors 1. In other embodiments, two laser sensors 1 are correspondingly provided on one side 31 of the top frame 311 near the detection bracket 5, and two laser sensors 1 are respectively provided on the two side edges connected to this side edge, while no laser sensors 1 are provided on the other side edge, so that the side edge without laser sensors 1 corresponds to the opening for entering the detection station.

[0041] In some embodiments of this application, the support column includes a longitudinal support column extending along the length of the detection bracket. At least two rows of fiber optic sensors 2 are provided, arranged vertically. Driven by an electric arm, the two rows of fiber optic sensors 2 move upwards, simultaneously scanning the deformation of the support column of the fixture 3, reducing scanning time and adapting to production lines where the fixture 3 of this application requires rapid detection of whether deformation exceeds the standard.

[0042] The number of fiber optic sensors 2 can be configured not to be limited to two rows, but can be configured to be three, four, or five rows arranged vertically, depending on the height of the fixture 3, in order to meet the requirements of the longitudinal support 322 of the fast scanning fixture 3.

[0043] In some embodiments of this application, the support column 32 includes m longitudinal support columns 322, which extend along the normal direction of the plane approximately containing the detection top frame 6; fiber optic sensors 2 are arranged in pairs in m columns, each column consisting of multiple pairs of fiber optic sensors 2 arranged vertically, with each column of fiber optic sensors 2 positioned on both sides of the longitudinal support column 322 to emit light onto the longitudinal support column 322, which is the part to be detected by the clamp 3. To ensure that the deformation of each longitudinal support column 322 is detected, fiber optic sensors 2 are provided on both sides of each longitudinal support column 322.

[0044] Specifically, the fiber optic sensor 2 is installed at one end of the extended electric arm 7. The electric arm 7 can be configured with multiple rows and columns, arranged according to the shape of the fixture 3's support frame. Typically, a pair of fiber optic sensors 2 are provided on both sides of a longitudinal column of the support frame. If the support frame has transverse support columns 32, the number of rows of fiber optic sensors 2 can be set according to the number of transverse support columns 321. For example, if a transverse support column 321 divides the fixture 3 into upper and lower parts, then two rows of fiber optic sensors 2 need to be set on the upper and lower sides of a transverse support column 321 respectively. Similarly, if there are n transverse support columns 321, dividing the fixture 3 into (n+1) upper and lower parts, then (n+1) rows of fiber optic sensors 2 will be set. If there are m longitudinal support columns 322, then m columns of paired fiber optic sensors 2 will be set so that when the fiber optic sensor 2 moves from bottom to top, it can scan every part of the support frame and accurately determine the deformation of each part, so that the fixture 3 is scanned more thoroughly and the overall detection accuracy is higher.

[0045] In some embodiments of this application, the minimum detectable deformation size standard of the fiber optic sensor 2 is a, where φ0.03mm≤a≤φ0.1mm. The minimum detectable size of the fiber optic sensor 2 can be selected according to actual needs. 0.1mm is the maximum degree of deformation. Exceeding this size will have a significant impact on the display effect of the panel 4.

[0046] Laser sensor 1 can be a high-precision laser displacement sensor with linearity of ±0.15% FS (80~120mm) and repeatability of 4 μm. Domestic laser sensor 1 or fiber optic sensor 2 can be used for measurement, eliminating the dependence on expensive foreign products.

[0047] This application also provides a method for detecting the fixture 3 for detecting the panel 4: refer to Figure 6 The controller is configured as follows: The test value of a fixture 3 that has not undergone deformation is pre-entered as the baseline value A0; When the fixture 3 is fixed on the testing station, it receives the test value A1 of the current fixture 3 being tested from the laser sensor 1 and / or the fiber optic sensor 2. Calculate the difference between A1 and A0, and determine the relationship between the difference P1 and the preset difference P0; If P1 > preset difference P0, then the deformation at that point is determined to be significantly unqualified. If P1 ≤ preset difference P0, then the deformation at that point is determined to be small. That is, the deformation is determined based on the difference between the current test value and the preset value. The determination method is scientific and numerically based, does not rely on human eyes for judgment, and the judgment result is more accurate. It can automatically and intelligently determine whether the deformation is too large. The detection tool does not need to contact the fixture 3, and the detection result is more accurate.

[0048] In some embodiments of this application, the reference value A0 may be the displacement and / or height difference and / or bending amount of the target measured point of the standard fixture 3, and the measured value A1 may be the displacement and / or height difference and / or bending amount of the measured point of the current fixture 3. The displacement, height difference and bending amount of the measured point can clearly reflect the deformation state of the measured point.

[0049] refer to Figure 7 In some embodiments of this application, the controller is configured to: pre-store the reference optical signal B0 of the fiber optic sensor 2 under unobstructed standard conditions; receive the optical signal B1 detected and collected by the fiber optic sensor 2 at a certain position, determine the magnitude relationship between the detected optical signal B1 and the reference optical signal B0, and when B1≥B0, receive the measurement data of the fiber optic sensor 2 at that position point, and determine whether there is a deformation problem inside the fixture 3 by the difference between the positions; if B1<B0, do not accept the measurement data of the fiber optic sensor 2 at that position point, which can reduce the calculation load and process of the controller. Only when B1≥B0, other measurement data of that position point are received and calculated.

[0050] Fiber optic sensor 2 operates by utilizing the characteristic that fiber optic signals shift due to stress and deformation. The amount of light received by the fiber optic sensor 2 gradually decreases during periods of obstruction; a change in light intensity occurs whenever the light is blocked. When the received light intensity falls below a threshold B0, it is considered obstructed. The controller receives other signals detected by the fiber optic sensor 2 at that location. If these signals are not greater than threshold B1, the controller receives all signals collected by the fiber optic sensor 2, treating this as a measurement point for data acquisition.

[0051] It should be noted that the fiber optic sensors 2 are arranged in pairs on both sides of the critical stress area inside the fixture 3. That is, the critical stress area of ​​the fixture 3 is within the measurement area of ​​the fiber optic sensors 2, and they do not need to contact the fixture 3 itself. When the fixture 3 itself is stretched, bent, or slightly deformed, the position of the fiber optic sensors 2 that triggers the acquisition changes. This is because the deformation of the fixture 3 itself will block the light source value of the stress area of ​​the fiber optic sensors 2. The controller receives the current trigger acquisition position and compares it with the standard value trigger acquisition position. By the difference between the positions, it can determine whether there is a deformation problem inside the fixture 3.

[0052] This application achieves non-contact measurement of the interior of the fixture 3 by setting up an optical fiber sensor 2. The optical fiber sensor 2 is small in size, resistant to electromagnetic interference, and can withstand high temperatures. It is suitable for high-temperature and strong electromagnetic working environments such as panel baking and vacuum bonding. The measurement results are accurate. The optical fiber sensor 2 is connected to the controller, which can realize intelligent detection of deformation inside the fixture 3, which is convenient and accurate.

[0053] In some embodiments, the controller is an industrial computer, and the detection system further includes a servo system and a cleanroom fixture 3.

[0054] The panel 4 and fixture 3 undergo multiple processes in series during production, including vacuum bonding, high-temperature baking, mechanical clamping, suction cup transfer, and high-speed assembly line vibration. This can easily lead to problems such as the fixture 3 experiencing instantaneous pressure / heat rebound deformation during the process, interfering with online detection and causing misjudgments and scrapping. However, the production line is required to operate at high speed to support the production of panel 4 and to carry out production quickly. Therefore, a laser sensor 1 is used to scan the frame 31 over a large area, and a fiber optic sensor 2 is used to perform dynamic scanning at multiple points on the support pillar 32 inside the fixture 3.

[0055] This application also provides a method for determining whether the fixture 3 exhibits static residual deformation: The controller is also electrically connected to the transmission mechanism. The controller is configured to receive the detection values ​​of the fixture 3 uploaded by the laser sensor 1 and / or the fiber optic sensor 2. When at least two different detection values ​​are received within a certain period of time, the controller outputs a signal to the electric arm 7 to make the fiber optic sensor 2 detect again for a certain period of time, and outputs a signal to the transmission mechanism to keep the transmission mechanism stationary so that the fixture 3 is detected again by the laser sensor 1 in the detection station. If the same test result is received within the time limit for retesting, it is determined that the previous test result was caused by the instability of the residual deformation of fixture 3. The deformation of fixture 3 is then determined based on the current test result. At this time, fixture 3 remains in the testing system. If the test value of fixture 3 is the same within a certain period of time, it indicates that the previous test result was caused by the instability of the static residual deformation of fixture 3. The previous data is invalidated, and the current test result is taken as the standard. This method is helpful in filtering out the test errors caused by the static residual deformation of fixture 3, thereby enhancing the accuracy of the measurement results.

[0056] The detection device of this application uses a laser sensor 1 at the frame 31 for rapid, wide-range scanning and a fiber optic sensor 2 at the support column 32 for precise multi-point scanning. The two sensors work together to achieve efficient and accurate scanning. Furthermore, during the production process, the panel 4 and fixture 3 are prone to online detection errors and scrapping due to instantaneous pressure / heat rebound deformation interference. By receiving the detection values ​​of fixture 3 uploaded by the laser sensor 1 and / or the fiber optic sensor 2, the device can determine whether the error is caused by unstable residual deformation, thereby improving the accuracy of the detection device. This enables efficient detection of the panel 4 and fixture 3 on a high-speed production line and reduces detection errors caused by static residual deformation of fixture 3.

[0057] This application also provides a method for determining whether dynamic process deformation occurs in fixture 3: In some embodiments of this application, the controller is configured to receive detection values ​​of the fixture 3 uploaded by the laser sensor 1 and / or the fiber optic sensor 2. Within a preset time T1, when at least K different fixtures 3 are detected to have excessive deformation at the same position, it is determined that the fixture 3 may have a production error at that position, or a problem in a certain production process, causing a problem with the production method at that position. The controller will then issue an early warning, such as an early warning of stress concentration and micro-deformation cumulative defects, to reduce subsequent bending and bonding offset problems of the panel 4. The controller will also warn the user to pay attention to whether there are stress concentration and / or micro-deformation cumulative defects, so as to solve the quality problem of the fixture 3 from the source of production.

[0058] Optionally, T1 is the time for at least 3 inspection processes, and K is 2, so as to quickly provide early warning when multiple fixtures 3 have excessive deformation at the same position in a short period of time, thereby reducing the probability of inaccurate inspection results due to dynamic process deformation.

[0059] In the field of panel 4 and fixture 3 production technology, it is necessary to quickly inspect fixture 3 to meet the high-speed production requirements of the production line. However, due to the thinness and lightness of fixture 3, it undergoes multiple processes during production, including vacuum bonding, high-temperature baking, mechanical clamping, suction cup transfer, and high-speed assembly line vibration. Because of its thinness and lightness, it is prone to dynamic process deformation. As the precision requirements for panel 4 are high, the precision requirements for fixture 3 are also very high. Therefore, distinguishing whether there is dynamic process deformation in fixture 3 is a problem that needs to be determined quickly. In the detection device of this application, the values ​​detected by laser sensor 1 and fiber optic sensor 2 are judged to make a more accurate judgment on the entire fixture 3, effectively reducing the probability of inaccuracy caused by dynamic process deformation.

[0060] An embodiment of the detection method of this application is described in detail below: S1. Fixture 3 is mounted on the sensor mounting bracket, and laser sensor 1 and fiber optic sensor 2 are also mounted on the sensor bracket; S2. After the laser sensor 1 and fiber optic sensor 2 are powered on, the preset standard value of the laser sensor 1 and the preset standard position of the fiber optic sensor 2 are set. The controller receives the detection values ​​of the fiber optic sensor 2 and the laser sensor 1 and compares them with the preset standard values ​​to facilitate the determination of whether the fixture 3 has deformed. S3. Fixture 3 enters the inspection station. The inspection station is equipped with a cylinder mechanism, which fixes fixture 3 in place so that fixture 3 is in a fixed state during the inspection process, reducing interference with the inspection results caused by the shaking of fixture 3 itself. S4. When the clamp 3 is clamped, the laser sensor 1 detects relevant values ​​of the frame 31 of the clamp 3, such as current displacement, height difference and bending amount. The controller receives the values ​​obtained by the laser sensor 1 and compares the test value with the previous preset standard value to determine whether the clamp 3 has deformed. S5. The fiber optic sensor 2 is connected to the motor. After the fixture 3 is fixed, the motor drives the electric arm 7, which is fixed with the fiber optic sensor 2, to extend forward so that the position to be measured in each layer of the fixture 3 is within the detection area of ​​the fiber optic sensor 2. The electric arm 7 drives the fiber optic sensor 2 to rise from bottom to top so that all layers of the support inside the fixture 3 can be detected by the fiber optic sensor 2. The fiber optic sensor 2 obtains the detected value. The controller compares the difference between the detected value and the preset standard value and uses the difference to determine whether the internal support has deformed. S6. The laser sensor 1 is set with a sampling period of 0.33ms and a measurement range of 75-130mm. The fiber optic sensor 2 is set to collect data from 90 points and has an abnormal warning threshold. When the controller calculates that the local deformation is greater than 1mm, it is determined that the deformation exceeds the standard and is unqualified. The exceeding the standard will automatically trigger an early warning and a production line slow stop signal, informing the production line that the clamp 3 of the panel 4 produced on the production line has exceeded the standard, so that the production personnel can separate the deformed clamp 3 and notify the production line to stop for easy removal. S7. For different deformation exceeding the standard, intelligent classification and early warning are performed: The controller distinguishes between static residual deformation and dynamic process deformation, and has different early warning and handling methods according to different deformation types.

[0061] A controller is a device that generates operation control signals based on instruction operation codes and timing signals, instructing the air conditioner to execute control commands. For example, in response to a received power-on or power-off command from a user, the controller can perform operations related to the object selected by the power-on or power-off command.

[0062] This application embodiment also provides a schematic diagram of the hardware structure of a controller, which includes a processor, and optionally, a memory and a communication interface connected to the processor. The processor, memory, and communication interface are connected via a bus. The processor can be a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor can also be any other device with processing capabilities, such as a circuit, device, or software module. The processor can also include multiple CPUs, and the processor can be a single-core processor or a multi-core processor. Here, "processor" can refer to one or more devices, circuits, or processing cores used to process data (e.g., computer program instructions).

[0063] This application also provides a schematic diagram of the hardware structure of a controller, which includes a processor, and optionally, a memory and a communication interface connected to the processor. The processor, memory, and communication interface are connected via a bus.

[0064] A processor can be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. A processor can also be any other device with processing capabilities, such as a circuit, device, or software module. A processor can also include multiple CPUs, and a processor can be a single-core processor or a multi-core processor. Here, "processor" can refer to one or more devices, circuits, or processing cores used to process data (e.g., computer program instructions).

[0065] The memory can be read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions, random access memory (RAM) or other types of dynamic storage devices capable of storing information and instructions. It can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, universal optical discs, Blu-ray discs, etc.), magnetic disk storage media, or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer. This application embodiment does not impose any limitations on this. The memory can exist independently or be integrated with the processor. The memory may contain computer program code. The processor executes the computer program code stored in the memory to implement the control method for the multi-split air conditioning system provided in this application embodiment.

[0066] The communication interface can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area network (WLAN), etc.). The communication interface can be a module, circuit, transceiver, or any device that can enable communication.

[0067] A bus can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc.

[0068] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are exhaustively listed. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A detection device for a clamp used to detect a panel, the clamp being connected to the bottom of the panel, the clamp comprising an internal support and an external frame, characterized in that, include: The testing bracket is equipped with an electric arm; A top inspection frame is connected to the top of the inspection bracket. The inspection station is located between the side of the inspection bracket with the electric arm and the top inspection frame. The fixture is installed in the inspection station and is inspected. A laser sensor is connected to the detection top frame. The laser sensor has at least two laser sensors, and the emitting ends of the two laser sensors are directed toward the frame and / or the support to emit laser light toward the frame. The fiber optic sensor has at least one pair and is connected to the electric arm; when the fixture is installed at the detection station, the pair of fiber optic sensors are located on both sides of the support column, and the electric arm drives the fiber optic sensors to move at least partially along the length direction of the support column; A controller, which is electrically connected to the electric arm, the laser sensor, and the fiber optic sensor; The controller is also electrically connected to the transmission mechanism, and the controller is configured to: After the panel and the fixture have undergone multiple processes in the production process, including vacuum bonding, high-temperature baking, mechanical clamping, suction cup transfer, and high-speed assembly line vibration, the controller receives the detection values ​​of the fixture uploaded by the laser sensor and / or the fiber optic sensor. When at least two different detection values ​​are received within a certain period of time, the controller outputs a signal to the electric arm so that the fiber optic sensor can detect again for a period of time, and outputs a signal to the transmission mechanism so that the transmission mechanism remains stationary so that the fixture can be detected again by the laser sensor in the detection station. If the same test result is received within the time limit for retesting, it is determined that the previous test result was due to the instability of residual deformation of the fixture, and the deformation of the fixture is determined based on the current test result.

2. The detection device for a fixture for detecting a panel according to claim 1, characterized in that, The frame includes a top frame connected to the panel, the laser sensor is located outside the top frame, and the top frame is located within the emission area of ​​the laser sensor; at least two laser sensors are provided on one side of the frame.

3. The detection device for a fixture for detecting a panel according to claim 1 or 2, characterized in that, The support includes a longitudinal support extending along the length of the detection bracket. The fiber optic sensors are disposed on both sides of the longitudinal support, and there are at least two rows of fiber optic sensors arranged vertically on adjacent rows, so that multiple rows of fiber optic sensors can detect different parts of the longitudinal support.

4. The detection device for a fixture for detecting a panel according to claim 3, characterized in that, There are m longitudinal support pillars, and the fiber optic sensors are arranged in pairs in m columns. Each column has multiple pairs of fiber optic sensors arranged vertically. The fiber optic sensors in one column are respectively located on both sides of the longitudinal support pillar and are used to emit light into the longitudinal support pillar.

5. The detection device for a fixture for detecting a panel according to claim 1, characterized in that, The minimum detectable deformation size standard of the fiber optic sensor is a, where φ0.03mm≤a≤φ0.1mm.

6. A method for detecting a fixture used to detect a panel, characterized in that, The detection device using the fixture for detecting panels as described in any one of claims 1 to 5. The controller is configured to: pre-enter a test value of the fixture without deformation as a reference value A0; when the fixture is fixed on the detection station, receive the test value A1 of the fixture currently being tested obtained by the laser sensor and / or the fiber optic sensor, calculate the difference between A1 and A0, and determine the relationship between the difference P1 and the preset difference P0. If P1 > preset difference P0, it is determined that the deformation at that point is large and unqualified; if P1 ≤ preset difference P0, it is determined that the deformation at that point is small.

7. The detection method for a fixture used for detecting panels according to claim 6, characterized in that, The reference value A0 can be the displacement, height difference, and bending amount of the target measured point of the standard fixture, and the measured value A1 can be the displacement, height difference, and bending amount of the measured point of the fixture currently being measured.

8. The detection method for a fixture used to detect a panel according to claim 6, characterized in that, The controller is configured to: pre-store the reference optical signal B0 of the fiber optic sensor under unobstructed standard conditions; The optical fiber sensor detects and collects an optical signal B1 at a certain position, and determines the magnitude relationship between the detected optical signal B1 and the reference optical signal B0. When B1 ≥ B0, the optical fiber sensor receives the measurement data of that position, and the difference between the positions is used to determine whether there is a deformation problem inside the fixture. If B1 < B0, then the measurement data of the fiber optic sensor for that location point will not be accepted.

9. The detection method for a fixture used for detecting a panel according to claim 8, characterized in that, The controller is configured to receive detection values ​​of the fixture uploaded by the laser sensor and / or the fiber optic sensor. Within a preset time T1, if at least K different fixtures are detected to have excessive deformation at the same position, it is determined that the fixture may have a production error at that position. The controller then warns the user to pay attention to whether there is a problem of stress concentration and / or micro-deformation accumulation defects. T1 is the time for at least 3 detection processes, and K is 2.

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