Curvature radius testing device and system for curved glass

Abstract

The embodiment of the utility model discloses a device and a system for testing the curvature radius of curved glass. The device comprises a test board, an arch height measuring assembly and a moving assembly, a middle area for placing curved glass is arranged at the center of the test board; the arch height measuring assembly is arranged above the middle area and is used for measuring the distance from the central vertex position of the curved glass to the arch height measuring assembly; the moving assemblies are arranged on the periphery of the middle area and located in the first direction and the second direction, the first direction is the chord length direction of the curved glass, and the second direction is perpendicular to the chord length direction of the curved glass; the moving assembly is in sliding connection with the test board and used for abutting against and pushing the curved glass so that the center of the curved glass can coincide with the center of the test board. The curvature radius testing device of the curved glass has the advantages of being simple in testing operation, high in testing efficiency and small in testing error.

Description

TECHNICAL FIELD

[0001] The utility model relates to glass deep processing technical field especially, relate to a curvature radius testing arrangement and system of curved surface glass. BACKGROUND

[0002] At present, domestic appliance and automobile curved surface display touch glass can realize bending effect, and the bending effect of curved surface glass has order of magnitude examination, and the curvature radius size is measured mostly by manual measurement at present stage, however, manual measurement needs two people to cooperate, one holds long ruler, and the other holds short ruler, cooperates and measures, error occurs frequently, and the measurement result is inaccurate, main reasons have: 1, long ruler is easy to deform, and precision is poor, thereby causing measurement deviation;2, manual naked eye identification and reading, and precision is low;3, because the angle of measurement person's eye is different, will cause the deviation of reading data. UTILITY MODEL CONTENT

[0003] The utility model embodiment discloses a curvature radius testing arrangement and system of curved surface glass for solving the problems of complex test operation, low test efficiency and big test error.

[0004] The utility model embodiment provides a curvature radius testing arrangement of curved surface glass, include: test board, arch height measurement subassembly and moving assembly,

[0005] The test board center is provided with the middle area for placing the curved surface glass;

[0006] The arch height measurement subassembly is arranged above the middle area, and the arch height measurement subassembly is used for measuring the distance from the center vertex position of the curved surface glass to the arch height measurement subassembly;

[0007] The moving assembly is arranged around the middle area and is located in the first direction and the second direction, the first direction is the chord length direction of curved surface glass, and the second direction is perpendicular to the chord length direction of curved surface glass;

[0008] The moving assembly is slidably connected with the test board, and the moving assembly is used for abutting and pushing the curved surface glass so that the center of the curved surface glass coincides with the center of the test board.

[0009] Further, the part where the moving assembly abuts with the curved surface glass is provided with a pressure sensor.

[0010] Further, the pressure sensor is a mechanical positioning pressure sensor.

[0011] Further, the arch height measurement subassembly includes a non-contact distance sensor.

[0012] Further, the non-contact distance sensor is an ultrasonic sensor.

[0013] Further, at least two moving assemblies are arranged side by side along the edge direction of the test table.

[0014] Further, the moving assembly is connected to the test table through a lead screw structure.

[0015] Further, the test platform comprises a groove corresponding to the moving assembly, the lead screw structure is arranged in the groove, and the bottom of the moving assembly is arranged in the groove and connected to the lead screw structure.

[0016] Further, the bottom of the moving assembly is also connected to a guide slidingly, and the guide is arranged in the groove and arranged in parallel with the lead screw structure.

[0017] A curvature radius testing system of a curved glass comprises a curvature radius testing device of the curved glass and a control platform, the control platform comprises an input unit, a calculation unit, a judgment unit and an output unit, the input end of the calculation unit and the judgment unit are connected to the output end of the input unit, and the output end of the judgment unit is connected to the input end of the output unit.

[0018] The input end of the input unit is connected to the moving assembly, the arch height measuring assembly and the pressure sensor respectively, and the output end of the output unit is connected to the moving assembly, the arch height measuring assembly and the pressure sensor respectively.

[0019] The input unit is used to obtain the pressure value of the pressure sensor, the position information of the moving assembly and the measurement data of the arch height measuring assembly.

[0020] The calculation unit is used to calculate the chord length value of the curved glass according to the position information, to calculate the arch height value of the curved glass according to the measurement data, and to calculate the curvature radius of the curved glass according to the chord length value and the arch height value.

[0021] The judgment unit is used to judge whether the pressure values of the pressure sensors on the moving assemblies in the same direction are greater than 0 at the same time, and to judge whether the pressure values of all moving assemblies are greater than 0.

[0022] The output unit is used to output the action signal of the moving assembly and the measurement signal of the arch height measuring assembly according to the judgment result of the judgment unit.

[0023] With the technical scheme, it can be seen that the embodiment provided by the utility model has the following advantages: the middle area of the test table is used for placing the curved glass, the moving assembly around the middle area is close to the curved glass and slides, the center of the curved glass and the center of the test table are coincided by the abutment of the moving assembly and the curved glass, the center vertex position of the curved glass is quickly and accurately positioned by the arch height measuring assembly, the distance between the moving assembly on both sides of the curved glass in the chord direction and the curved glass is the chord length when the moving assembly on both sides of the curved glass in the chord direction and the curved glass abut at the same time, therefore, the embodiment does not need manual positioning, the test operation is simple, and the test efficiency is improved and the test error is small. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0025] Figure 1 It is a structure schematic view of the curvature radius test system of the curved glass provided in the embodiment of the utility model.

[0026] Figure 2 It is a top view of the test table in the curvature radius test device of the curved glass provided in the embodiment of the utility model.

[0027] Figure 3 It is a structure schematic view of the control platform in the curvature radius test system of the curved glass provided in the embodiment of the utility model.

[0028] Explanation of reference signs:

[0029] 1, test table; 11, middle area; 2, curved glass; 3, arch height measuring assembly; 4, moving assembly; 41, longitudinal moving rod; 42, transverse moving rod; 5, pressure sensor; 6, control platform; 61, input unit; 62, judging unit; 63, calculating unit; 64, output unit; 7, transmission line; 8, groove; 81, longitudinal slot; 82, transverse slot. DETAILED DESCRIPTION

[0030] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0031] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0032] In the description of the utility model, it needs to be understood that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements.

[0033] In the description of the present application, the specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0034] It should be understood that, although the steps in the flowchart of the drawings are shown in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise specified in this paper, the execution of these steps has no strict sequence limitation, and they can be executed in other order. Moreover, at least part of the steps in the flowchart of the drawings can include multiple sub-steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order is not necessarily sequential, but can be executed alternately or alternately with other steps or other steps or stages of at least part of the sub-steps.

[0035] The utility model will be described in detail below in combination with the drawings and specific embodiments. The control method, algorithm and other features involved in the technical solution are common technical features disclosed in the prior art.

[0036] The utility model discloses a curvature radius testing device of curved surface glass.

[0037] The embodiment calculates the radius of curvature R by the formula R 2 = (R-H) 2 + (L / 2) 2 The radius of curvature R of the curved glass 2 is calculated, and thus the radius of curvature testing device of the curved glass 2 in the embodiment needs to measure the chord length L and the arch height H of the curved glass 2, wherein the chord length refers to the length of the line connecting the two endpoints of the circular arc of the cross section of the curved glass, and the arch height refers to the distance between the arc and the chord. It should be noted that the formula R 2 = (R-H) 2 + (L / 2) 2 is a formula for calculating the radius of a circular arc in the prior art, and for a circular arc, the radius of curvature is the radius of the circular arc. The curved glass in the embodiment has a shape of a circular arc.

[0038] Referring to Figures 1-2 , an embodiment of the radius of curvature testing device of the curved glass provided in the embodiment of the utility model comprises:

[0039] a test table 1, an arch height measuring assembly 3 and a moving assembly 4;

[0040] The test table 1 is provided with a middle area 11 for placing the curved glass 2 at the center of the test table 1;

[0041] The arch height measuring assembly 3 is arranged above the middle area 11, and the arch height measuring assembly 3 is used for measuring the distance from the center vertex position of the curved glass 2 to the arch height measuring assembly 3;

[0042] The moving assembly 4 is arranged around the middle area 11 and is located in a first direction and a second direction, the first direction is the chord length direction of the curved glass 2, and the second direction is perpendicular to the chord length direction of the curved glass 2;

[0043] The moving assembly 4 is in sliding connection with the test table 1, and the moving assembly 4 is used for abutting and pushing the curved glass 2 so that the center of the curved glass 2 coincides with the center of the test table 1.

[0044] It can be understood that in actual implementation, after the curved glass 2 is placed on the middle area 11 of the test table 1, the curved glass 2 is pushed to move by the moving assembly 4 located around the middle area 11, when the moving assembly 4 is in abutment with the curved glass 2, the center of the curved glass 2 coincides with the center of the test table 1, which facilitates the arch height measuring assembly 3 to accurately position the center vertex position of the curved glass 2 and measure the arch height of the curved glass 2. If there is no alignment, the measurement point may deviate from the true center point of the glass, i.e., the position of the highest arch height, resulting in deviation of the measurement result. The chord length is obtained by the distance between the two moving assemblies 4 located on both sides of the chord length direction of the curved glass 2 when the two moving assemblies 4 are in abutment with the curved glass 2 at the same time. Therefore, the present example does not need manual positioning, the test operation is simple, the test efficiency is high, the test error is small, and the device cost is low.

[0045] Therefore, after the arch height H and the chord length L of the curved glass 2 are obtained, the radius of curvature R of the curved glass is calculated by the formula R 2 =(R-H) 2 +(L / 2) 2 .

[0046] In a more specific embodiment, the moving assembly 4 is connected to the test table 1 through a lead screw structure. It can be understood that in actual implementation, the stable linear motion track provided by the lead screw structure avoids damage to the curved glass 2 caused by lateral or irregular force; through the characteristics of flexible moving speed adjustment and adjustable rotary torque of the lead screw structure, the power of the moving assembly 4 can be accurately controlled to avoid damage to the curved glass 2 caused by out-of-control pushing force and speed of the moving assembly 4.

[0047] In a more specific embodiment, the test platform includes a groove 8 corresponding to the moving assembly 4, the lead screw structure is arranged in the groove 8, and the bottom of the moving assembly 4 is arranged in the groove 8 and connected with the lead screw structure. It can be understood that in actual implementation, the moving assembly 4 moves in the groove 8 through the lead screw structure, and by arranging the lead screw structure in the groove 8 of the test table 1, the surface of the test table 1 can be kept flat, which facilitates the placement of curved glasses 2 of different sizes above the groove 8, so that the test equipment has enough space to measure curved glasses 2 of different sizes.

[0048] In a more specific embodiment, the bottom of the moving assembly 4 is also slidingly connected with a guide, and the guide is arranged in the groove 8 and arranged in parallel with the lead screw structure.

[0049] It can be understood that in actual implementation, the parallel guide can provide additional support for the moving assembly 4, effectively limit its activity range, and thus reduce the risk of swinging caused by loosening of the lead screw structure.

[0050] In a more specific embodiment, the guide is a guide rod arranged in the middle of the groove 8, the two ends of the guide rod are fixedly connected with the two ends of the groove 8, and the middle of the moving assembly 4 penetrates through the guide rod and is in sliding connection with the guide rod. It can be understood that in specific implementation, the movement of the moving member is limited by the guide rod and the screw rod structure in the axial direction of the guide rod and the screw rod structure, and the situation of tilting or swinging around the periphery does not occur, and the movement stability of the moving assembly 4 is improved.

[0051] In some more specific embodiments, the guide is a concave-convex slider structure arranged between the moving member and the groove 8, and the concave-convex slider structure is arranged on both sides of the moving member. It can be understood that in specific implementation, the moving assembly 4 moves along the length direction of the groove 8 following the screw rod structure. Since the moving assembly 4 is in sliding connection with the two sides of the groove 8 in the width direction through the concave-convex slider structure, the concave-convex slider structure can avoid the situation that the moving assembly 4 swings back and forth in the width direction of the groove 8, and thus the movement stability of the moving assembly 4 is further improved.

[0052] In a more specific embodiment, at least two moving assemblies 4 are arranged on each side of the test table 1. It can be understood that when the size of the curved glass 2 is large, if only one moving assembly 4 is arranged on each side of the test table 1, the situation that the curved glass 2 is not properly positioned and the moving assemblies 4 around the periphery are in abutment with the curved glass 2 may occur. At this time, the center of the curved glass 2 is not aligned with the center of the test table 1, resulting in that the distance measured by the arch height measuring assembly 3 is not the distance from the center top point of the curved glass 2 to the arch height measuring assembly 3. Therefore, in specific implementation of the embodiment, two moving assemblies 4 are arranged side by side along the edge direction of the test table 1 on each side of the test table 1. When the two moving assemblies 4 are in contact with one side of the glass at the same time, it can be confirmed that the position of the curved glass 2 is not deviated, and this way can better ensure that the center point of the curved glass 2 coincides with the test table 1. In addition, one side of the curved glass 2 has two abutment points with the two moving assemblies 4, compared with one abutment point, this way can better maintain the stability of the curved glass 2 during movement, avoid tilting of the curved glass 2 during movement, and effectively prevent the situation that the curved glass 2 has position deviation during movement.

[0053] In a more specific embodiment, the groove 8 includes a longitudinal groove 81 and a transverse groove 82, and the moving assembly 4 includes a longitudinal moving rod 41 and a transverse moving rod 42.

[0054] The middle area 11 of the curved glass 2 placed on the test table 1 is symmetrically provided with longitudinal grooves 81 on the front and rear sides, two parallel longitudinal grooves 81 are arranged on each side, a longitudinal moving rod 41 is slidably connected in each longitudinal groove 81, the lower end of the longitudinal moving rod 41 extends to the groove bottom of the longitudinal groove 81 and is connected with a longitudinal screw structure, the screw rod in the longitudinal screw structure is rotatably connected in the longitudinal groove 81 through a support block, and one end of the screw rod extends to the outside of one side of the support block and is fixedly connected with the output end of a motor.

[0055] The middle area 11 of the curved glass 2 placed on the test table 1 is symmetrically provided with longitudinal grooves 81 on the front and rear sides, two parallel longitudinal grooves 81 are arranged on each side, a longitudinal moving rod 41 is slidably connected in each longitudinal groove 81, the lower end of the longitudinal moving rod 41 extends to the groove bottom of the longitudinal groove 81 and is connected with a longitudinal screw structure, the screw rod in the longitudinal screw structure is rotatably connected in the longitudinal groove 81 through a support block, and one end of the screw rod extends to the outside of one side of the support block and is fixedly connected with the output end of a motor.

[0056] It can be understood that, in specific implementation, firstly, the motor is operated to control the rotation of the longitudinal screw structure, so that the two longitudinal moving rods 42 located on the left and right sides of the middle area 11 relatively move along the longitudinal grooves 82, and the left and right sides of the curved glass 2 are gradually abutted by the movement of the longitudinal moving rods 42, when the left and right sides of the longitudinal moving rods 42 are both in abutment with the curved glass 2, the motor is quickly reversed to make the longitudinal moving rods 42 retreat backward, so as to avoid the squeezing of the glass by the longitudinal moving rods 42. Then, the motor is operated to control the rotation of the longitudinal screw structure, so that the two longitudinal moving rods 41 located on the front and rear sides of the middle area 11 relatively move along the longitudinal grooves 81, and the left and right sides of the curved glass 2 are gradually abutted by the movement of the longitudinal moving rods 41, when the left and right sides of the longitudinal moving rods 41 are both in abutment with the curved glass 2, the motor is quickly reversed to make the longitudinal moving rods 41 retreat backward, so as to avoid the squeezing of the glass by the longitudinal moving rods 41.

[0057] In the above embodiment, the reason why the longitudinal moving rod 42 and the longitudinal moving rod 41 are operated in staggered mode is that, due to the different front-rear width and left-right width of the curved glass 2, the longitudinal moving rod 42 may be in abutment with the curved glass 2, but the longitudinal moving rod 41 still pushes the curved glass 2 to move, at this time, the curved glass 2 will rub against the longitudinal moving rod 42, causing the wear of the curved glass 2.

[0058] It should be noted that the movement sequence of the longitudinal moving rod 42 and the longitudinal moving rod 41 in the above embodiment is only an example, and there is no limitation that the longitudinal moving rod 42 is operated first or the longitudinal moving rod 41 is operated first.

[0059] In a more specific embodiment, the part where the moving assembly 4 is in abutment with the curved glass 2 is provided with a pressure sensor 5. It can be understood that, in specific implementation, the pressure sensor 5 is used to sense the pressure change between the moving assembly 4 and the curved glass 2 to determine whether the moving assembly 4 is in abutment with the curved glass 2. When abutment is confirmed, when the pressure sensors 5 on the lateral moving rods 42 on the left and right sides of the curved glass 2 are both greater than 0, the lateral moving rods 42 on the left and right sides are both in abutment with the curved glass 2, at which time the lateral moving rods 42 on the left and right sides are simultaneously retracted backward to avoid pressing the glass. When the pressure sensors 5 on the longitudinal moving rods 41 on the front and back sides of the curved glass 2 are both greater than 0, the longitudinal moving rods 41 on the front and back sides are both in abutment with the curved glass 2, at which time the lateral moving rods 42 on the left and right sides are simultaneously retracted backward to avoid pressing the glass. Therefore, in this embodiment, when the moving assembly 4 is pushed towards the curved glass 2, if there is no feedback control of the pressure sensor 5, the moving assembly 4 can continuously apply pressure to the glass. Since the curved glass 2 has a special shape and relatively fragile characteristics, excessive pressure can easily cause the curved glass 2 to deform. The pressure sensor 5 can monitor the pressure between the moving assembly 4 and the curved glass 2 in real time. When the pressure on the opposite sides is greater than 0 (i.e., the moving assembly 4 on the opposite sides starts to contact the curved glass 2 and generates pressure), the moving assembly 4 on the opposite sides immediately retracts, which avoids the moving assembly 4 applying excessive pressing force to the curved glass 2, thereby effectively preventing the curved glass 2 from deforming due to excessive pressing.

[0060] It should be noted that, in this embodiment, when calculating the chord length of the curved glass 2, if the pressure sensor 5 is arranged on the surface of the moving assembly 4, after obtaining the distance between the two sides of the curved glass 2 in the chord length direction when the pushing assembly on the two sides is in abutment with the curved glass 2 at the same time, the length of the pressure sensor 5 needs to be subtracted to obtain the accurate chord length. If the pressure sensor 5 is embedded in the middle of the moving assembly 4, and the end face of the pressure sensor 5 is flush with the surface of the moving assembly 4, when calculating the chord length, the length of the pressure sensor 5 does not need to be removed, and the distance between the two sides of the moving assembly 4 when the two sides of the moving assembly 4 are in abutment with the curved glass 2 at the same time in the chord length direction of the curved glass 2 can be directly used to obtain the chord length of the curved glass 2.

[0061] In a more specific embodiment, the pressure sensor 5 is a mechanical positioning pressure sensor. It can be understood that, in specific implementation, the mechanical positioning pressure sensor can not only monitor the pressure change between the moving assembly 4 and the curved glass 2 in real time, but also buffer the contact pressure through the deformation of the mechanical pressure positioning sensor to avoid damage to the curved glass 2 by the pressure sensor.

[0062] In the embodiment, since the mechanical positioning pressure sensor is used to monitor the pressure by deformation, the actual length of the pressure sensor 5 is the original length of the mechanical positioning pressure sensor minus the deformation distance of the mechanical positioning pressure sensor. Therefore, when calculating the chord length, if the mechanical positioning pressure sensor is arranged on the surface of the moving assembly 4, after the distance between the two moving assemblies 4 when the two moving assemblies 4 and the curved glass 2 simultaneously abut at both sides of the chord length direction of the curved glass 2 is obtained, the length of the mechanical positioning pressure sensor should be subtracted to obtain the accurate chord length, and at this time, the length of the mechanical pressure positioning sensor should be the original length of the mechanical pressure positioning sensor minus the deformation distance of the mechanical pressure positioning sensor. If the mechanical positioning pressure sensor 5 is embedded in the middle of the moving assembly 4, and the end surface of the mechanical positioning pressure sensor 5 is flush with the surface of the moving assembly 4, after the distance between the two moving assemblies 4 when the two moving assemblies 4 and the curved glass 2 simultaneously abut at both sides of the chord length direction of the curved glass 2 is obtained, the deformation distance of the mechanical pressure positioning sensor should be added to obtain the accurate chord length.

[0063] It should be noted that the mechanical positioning pressure sensor is a sensor for realizing pressure positioning and monitoring by mechanical displacement or deformation of an element, including a Bourdon tube pressure sensor, a diaphragm pressure sensor, a bellows pressure sensor, a spring sensor, a strain pressure sensor, etc.

[0064] Taking the strain pressure sensor as an example, when subjected to pressure, the elastic element inside the strain pressure sensor will deform, and the strain gauge pasted on the elastic element will also produce strain, thereby causing the resistance value to change. The resistance change is converted into an electric signal through a measurement circuit, and then the deformation amount of the elastic element and the corresponding pressure can be calculated. The deformation distance method: the strain coefficient K of the strain gauge, the initial value R0 of the strain gauge resistance, and the measured resistance change value AR are known, and the strain ε can be calculated according to the formula ε=AR / R0K. The relationship between the strain ε and the deformation amount AL of the elastic element and the original length L1 is ε=AL / L1, and thus the deformation amount AL of the strain pressure sensor is obtained.

[0065] It should be noted that the calculation formula of the deformation amount of the strain pressure sensor is the prior art.

[0066] In specific implementation, taking the strain pressure sensor arranged on the surface of the moving assembly 4 as an example, when calculating the chord length L, the distance between the two moving assemblies 4 when the two moving assemblies 4 and the curved glass 2 simultaneously abut at both sides of the chord length direction of the curved glass 2 is l, the length of the strain pressure sensor is L2, L = l - 2 * (L2 - AL). If the strain pressure sensor is embedded in the middle of the moving assembly 4, and the end surface of the strain pressure sensor is flush with the surface of the moving assembly 4, when the chord length L is obtained, the distance l between the two sides of the moving assembly 4 when the two sides of the moving assembly 4 and the curved glass 2 are in contact at the same time in the chord length direction of the curved glass 2, and the length of the strain pressure sensor is L2, L = l - 2 * (L2 + AL).

[0067] It should be noted that the above embodiments provide some calculation methods of the chord length in the above embodiments, which are used to further illustrate the beneficial effects of obtaining accurate chord length values in the testing process of the curvature radius testing device for curved glass provided by the present application in combination with the above-mentioned scheme, so that the technical personnel in the art can understand the contribution of the scheme. The calculation method of the chord length is not a limitation of the present application, and the technical personnel in the art can adjust it according to the selection and layout of the actual pressure sensor in actual application.

[0068] In a more specific embodiment, the arch height measuring assembly 3 includes a non-contact distance sensor. It can be understood that in specific implementation, through the non-contact distance measuring performance of the non-contact distance sensor, the pressure of the arch height measuring assembly 3 on the curved glass 2 is avoided, which causes the deformation of the curved glass 2 to affect the measurement result or damage the curved glass 2.

[0069] In a more specific embodiment, the non-contact distance sensor is an ultrasonic sensor. It can be understood that in specific implementation, since the curved glass 2 has the characteristics of reflection and transparency, the distance is measured by transmitting and receiving ultrasonic signals through the ultrasonic sensor, which is not affected by light.

[0070] It should be noted that the non-contact distance sensor measures the distance H1 from the non-contact distance sensor to the center vertex of the curved glass 2, and to obtain the arch height, the distance H2 from the non-contact distance sensor to the surface of the test table 1 needs to be measured, so the arch height H = H2 - H1.

[0071] It should be noted that the arch height calculation method provided in the above embodiments is used to further illustrate the beneficial effects of obtaining accurate arch height values by the non-contact distance sensor in the testing process of the curvature radius testing device for curved glass provided by the present application in combination with the above-mentioned scheme, so that the technical personnel in the art can understand the contribution of the scheme. The calculation method of the arch height is not a limitation of the present application, and the technical personnel in the art can adjust it according to the working characteristics of the actual non-contact distance sensor in actual application.

[0072] Please refer to Figure 3The embodiment provides a curvature radius testing system of curved glass 2, which comprises a curvature radius testing device of curved glass 2 and a control platform 6, and the moving assembly 4, the arch height measuring assembly 3 and the pressure sensor 5 are electrically connected with the control platform 6.

[0073] The control platform 6 comprises an input unit 61, a calculation unit 63, a judgment unit 62 and an output unit 64, the input end of the calculation unit 63 and the judgment unit 62 are connected with the output end of the input unit 61, and the output end of the judgment unit 62 is connected with the input end of the output unit 64.

[0074] The input end of the input unit 61 is connected with the moving assembly 4, the arch height measuring assembly 3 and the pressure sensor 5 respectively, and the output end of the output unit 64 is connected with the moving assembly 4, the arch height measuring assembly 3 and the pressure sensor 5 respectively.

[0075] The input unit 61 is used for acquiring the pressure value of the pressure sensor 5, the position information of the moving assembly 4 and the measurement data of the arch height measuring assembly 3.

[0076] The calculation unit 63 is used for calculating the chord length value of the curved glass 2 according to the position information, calculating the arch height value of the curved glass 2 according to the measurement data and calculating the curvature radius of the curved glass 2 according to the chord length value and the arch height value.

[0077] The judgment unit 62 is used for judging whether the pressure values of the pressure sensors 5 on the moving assemblies 4 moving in the same direction are greater than 0 at the same time and judging whether the pressure values of all the moving assemblies 4 are greater than 0.

[0078] The output unit 64 is used for outputting the action signal of the moving assembly 4 and the measurement signal of the arch height measuring assembly 3 according to the judgment result of the judgment unit 62.

[0079] In a more specific embodiment, the moving assembly 4, the arch height measuring assembly 3 and the pressure sensor 5 are electrically connected with the control platform 6 through transmission lines 7.

[0080] In a more specific embodiment, the control platform 6 is a computer device, a PLC (programmable logic controller) or a single-chip microcomputer.

[0081] It should be understood that the input unit 61 can itself realize an input module known in the prior art for receiving any data signal input, such as an input port of a single-chip microcomputer; the calculation unit 63 can itself realize a processing module known in the prior art for performing operations on any data according to any formula, such as a central processing unit of a single-chip microcomputer; the judgment unit 62 can itself realize a processing module known in the prior art for comparing the sizes of different input values, such as a central processing unit of a single-chip microcomputer; and the output unit 64 can itself realize an output module known in the prior art for outputting any execution signal, such as an output port of a single-chip microcomputer.

[0082] It should be noted that in the present application, the input unit 61, the calculation unit 63, the judgment unit 62 and the output unit 64 in the control platform 6 are the hardware basis provided for calculating the radius of curvature R of the curved glass 2, and the content related to the specific programming to further realize the intelligent function is a method content that can be realized by the person skilled in the art based on common knowledge, which is not within the scope of the present application. The above description is only to illustrate the beneficial effects that can be achieved by improving the hardware structure based on common knowledge, and the effect realization in the present embodiment does not depend on the implementation of these method contents for illustration.

[0083] The present application also provides some measurement methods of the radius of curvature of the curved glass in the above embodiments, which are used to further illustrate the beneficial effects of the radius of curvature testing system of the curved glass 2 in the working process of the present application in combination with any of the above embodiments, so as to enable the person skilled in the art to understand the contribution of the present application. The following embodiments are not limitations of the present application, and the person skilled in the art can adjust them according to the configuration of the actual testing system in practical application.

[0084] The present embodiment provides a measurement method, when the pressure sensor 5 is arranged on the surface of the moving assembly 4, specifically comprising the following steps:

[0085] S1: measuring the distance H2 from the non-contact sensor to the test table 1 by the non-contact sensor of the arch height measuring assembly 3;

[0086] S2: placing the curved glass 2 in the middle area 11 of the test platform, with the center vertex of the curved glass 2 away from the surface of the test table 1, and the chord length direction of the curved glass 2 parallel to the left-right direction of the test table 1;

[0087] S3: starting the longitudinal moving rods 41 in the front-rear direction of the middle area 11 to move towards the curved glass 2, and when the pressure values measured by the pressure sensors 5 on the longitudinal moving rods 41 are all greater than 0, the longitudinal moving rods 41 are moved in the opposite direction;

[0088] S4, the left and right direction of the lateral moving rod 42 is moved towards the curved glass 2; when the pressure sensor 5 on the lateral moving rod 41 is greater than 0, the lateral moving rod 41 is reversely moved;

[0089] S5, the non-contact sensor of the arch height measuring assembly 3 measures the distance H1 from the non-contact sensor to the center vertex of the curved glass 2;

[0090] S6: calculate the radius of curvature R: subtract the distance from the non-contact sensor to the center vertex of the curved glass 2 from the distance from the non-contact sensor to the test bench 1 to obtain the arch height H = H1, obtain the position of the relative two sides of the lateral moving rod 42 when the pressure values of the pressure sensors 5 in the left and right directions are greater than 0, calculate the distance l of the lateral moving rod 42 on both sides of the curved glass 2 in the left and right directions, and then subtract the length L2 of the pressure sensor 5 to obtain the chord length L, and then calculate the radius of curvature R according to the values of the arch height and the chord length and the formula R = (R-H) + (L / 2) 2- 2 = (R-H) 2 + (L / 2) 2 .

[0091] In a more specific embodiment, when the pressure sensor 5 is a mechanical positioning pressure sensor, the chord length L = l-2*(L2-△L), wherein l is the distance between the two sides of the moving assembly 4 when the two sides of the moving assembly 4 are simultaneously abutted to the curved glass 2, L2 is the original length of the mechanical positioning pressure sensor, and △L is the deformation amount of the mechanical positioning pressure sensor.

[0092] The embodiment provides a measurement method, and when the pressure sensor 5 is embedded in the middle part of the moving assembly 4 and the end surface of the pressure sensor 5 is flush with the surface of the moving assembly 4, the method specifically comprises the following steps:

[0093] S1: measure the distance H2 from the non-contact sensor to the test bench 1 by the non-contact sensor of the arch height measuring assembly 3;

[0094] S2: place the curved glass 2 in the middle area 11 of the test platform, the center vertex of the curved glass 2 is away from the surface of the test bench 1, and the chord length direction of the curved glass 2 is parallel to the left and right directions of the test bench 1;

[0095] S3: the longitudinal moving rod 41 in the front and back directions of the middle area 11 is moved towards the curved glass 2; when the pressure values measured by the pressure sensor 5 on the longitudinal moving rod 41 are greater than 0, the longitudinal moving rod 41 is reversely moved;

[0096] S4, the left and right direction of the lateral moving rod 42 is moved towards the curved glass 2; when the pressure sensor 5 on the lateral moving rod 41 is greater than 0, the lateral moving rod 41 is reversely moved; ​

[0097] S5, start the non-contact sensor of the arch height measuring assembly 3 to measure the distance H1 from the non-contact sensor to the center vertex of the curved glass 2;

[0098] S6: calculate the radius of curvature R: subtract the distance from the non-contact sensor to the center vertex of the curved glass 2 from the distance from the non-contact sensor to the test table 1 to obtain the arch height H = H1-R, obtain the position of the relative two sides of the lateral moving rod 42 when the pressure values of the pressure sensors 5 in the left and right directions are greater than 0, and calculate the distance l of the lateral moving rod 42 on the two sides of the curved glass 2 in the left and right directions to directly obtain the chord length L, and according to the values of the arch height and the chord length and the formula R = (R-H) + (L / 2), calculate the radius of curvature R. 2- 2 2 2 calculate the radius of curvature R.

[0099] In a more specific embodiment, when the pressure sensor 5 is a mechanically positioned pressure sensor, the chord length L = l-2*(L2+△L), wherein l is the distance between the two sides of the moving assembly 4 when the two sides of the moving assembly 4 and the curved glass 2 are simultaneously abutted, L2 is the original length of the mechanically positioned pressure sensor, and △L is the deformation amount of the mechanically positioned pressure sensor.

[0100] It should be noted that the terms used to describe the positional relationship in the above examples and the accompanying drawings are only for illustrative purposes and should not be construed as limiting the present patent; the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the claims of the present application.​​​

Claims

1. A device for testing the radius of curvature of a curved glass, characterized in that, The curvature radius testing device for curved glass comprises a test table (1), an arch height measuring assembly (3) and a moving assembly (4). The test table (1) is provided with a middle area (11) for placing the curved glass (2) at the center of the test table (1). The arch height measuring assembly (3) is arranged above the middle area (11) and is used for measuring the distance from the center vertex position of the curved glass (2) to the arch height measuring assembly (3). The moving assembly (4) is arranged around the middle area (11) and is located in a first direction and a second direction, the first direction being the chord length direction of the curved glass (2), and the second direction being perpendicular to the chord length direction of the curved glass (2). The moving assembly (4) is in sliding connection with the test table (1), and is used for abutting and pushing the curved glass (2) so that the center of the curved glass (2) coincides with the center of the test table. The part of the moving assembly (4) abutting the curved glass (2) is provided with a pressure sensor (5).

2. The apparatus for testing the radius of curvature of a curved glass according to claim 1, wherein, The pressure sensor (5) is a mechanical positioning pressure sensor.

3. The apparatus for testing the radius of curvature of a curved glass according to claim 2, wherein The arch height measuring assembly (3) comprises a non-contact distance sensor.

4. The apparatus for testing the radius of curvature of a curved glass according to claim 1, wherein The non-contact distance sensor is an ultrasonic sensor.

5. The apparatus for testing the radius of curvature of a curved glass pane according to claim 4, characterized in that At least two moving assemblies (4) are arranged side by side along the edge direction of the test table (1) on each side of the test table (1).

6. The apparatus for testing the radius of curvature of a curved glass pane according to claim 1, wherein The moving assembly (4) is connected to the test table (1) through a lead screw structure.

7. The apparatus for testing the radius of curvature of a curved glass pane according to claim 1, wherein The test table (1) comprises a groove (8) corresponding to the moving assembly (4), the lead screw structure is arranged in the groove (8), and the bottom of the moving assembly (4) is arranged in the groove (8) and connected to the lead screw structure.

8. The apparatus for testing the radius of curvature of a curved glass pane according to claim 7, characterized in that The bottom of the moving assembly (4) is also in sliding connection with a guide, the guide is arranged in the groove (8) and is arranged in parallel with the lead screw structure.

9. The apparatus for testing the radius of curvature of a curved glass pane according to claim 8, characterized in that, The curvature radius testing device for curved glass comprises a test table (1), an arch height measuring assembly (3) and a moving assembly (4).

10. A system for testing the radius of curvature of a curved glass, characterized in that, The control platform (6) comprises an input unit (61), a calculation unit (63), a judgment unit (62) and an output unit (64), the input end of the calculation unit (63) and the judgment unit (62) are connected to the output end of the input unit (61), and the output end of the judgment unit (62) is connected to the input end of the output unit (64). The input end of the input unit (61) is connected to the moving assembly (4), the arch height measuring assembly (3) and the pressure sensor (5), respectively, and the output end of the output unit is connected to the moving assembly (4), the arch height measuring assembly (3) and the pressure sensor (5), respectively. The input unit (61) is used for acquiring the pressure value of the pressure sensor (5), the position information of the moving assembly and the measurement data of the arch height measuring assembly (3). The calculation unit (63) is used for calculating the chord length value of the curved glass (2) according to the position information, calculating the arch height value of the curved glass (2) according to the measurement data, and calculating the curvature radius of the curved glass (2) according to the chord length value and the arch height value. ​ The judging unit (62) is used for judging whether the pressure values of the pressure sensors (5) on the same moving assembly (4) are greater than 0 at the same time, and judging whether the pressure values of all the moving assemblies (4) are greater than 0; The output unit (64) is used for outputting the action signal of the moving assembly (4) and the measurement signal of the arch height measurement assembly (3) according to the judging result of the judging unit (62).

Images