CN114414219A - Computer curved surface screen bending performance testing device - Google Patents
Computer curved surface screen bending performance testing device Download PDFInfo
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- CN114414219A CN114414219A CN202111522429.3A CN202111522429A CN114414219A CN 114414219 A CN114414219 A CN 114414219A CN 202111522429 A CN202111522429 A CN 202111522429A CN 114414219 A CN114414219 A CN 114414219A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/08—Testing mechanical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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Abstract
The invention discloses a device for testing the bending performance of a computer curved screen, which comprises an arched self-compensation type reference bending mechanism, a lockable reciprocating bending mechanism, a bending limit adjusting mechanism and a protective base assembly. The invention belongs to the technical field of flexible curved screen testing, and particularly relates to a device for testing the bending performance of a computer curved screen; the method can respectively test the limit bending amplitude and the limit bending times of the flexible curved screen in a research and development stage and test the qualification of the bending amplitude and the bending times of a product in a production stage; the invention provides an arched self-compensation type reference bending mechanism based on a curved surface principle and a dynamic principle, an elastic bending arm which is continuously bent is divided into a plurality of compensation control areas by utilizing the idea of calculus, each area is self-adaptively compensated according to different offset amplitudes, and therefore, the difference of curvature radiuses of all parts of the elastic bending arm is reduced, and the elastic bending arm is presented as a relatively regular circular arc.
Description
Technical Field
The invention belongs to the technical field of testing of flexible curved screens, and particularly relates to a device for testing bending performance of a computer curved screen.
Background
The curved screen with certain flexibility is the development trend and leading-edge technology of computer screens, and a large amount of flexible curved screens have appeared on the market at present, compare in traditional rigid screen, and flexible curved screen still needs two parameters of extra concern in the production stage of research and development: limit bending amplitude and limit bending times.
The research and development stage and the production stage pay different attention to the two parameters, the research and development stage needs to test the limit bending amplitude and the limit cycle bending times, the production stage only needs to test sampled products, and when the test reaches a qualified standard value, if the screen is not damaged, the product is qualified.
The bending amplitude of the screen can not be directly known from the screen when the screen is bent, the bending shape of each part of the screen in a free state is relatively difficult to control, an attaching and supporting structure is needed, the bending amplitude of the screen can be converted by controlling the bending amplitude of the mechanism, but the following phenomena exist in the bending process of general elastic materials:
when the middle point of the elastic material is fixed and pulled at two ends, the curvature radius of the bent part is gradually increased from the fixed position to the pulling position until the bent part is nearly straight, so that the bending degree difference of each part of the bent screen is large, namely the purpose of completely testing the whole screen is not actually achieved (the deformation amplitude of the central position of the screen is always larger than that of the edge area, the effective coverage rate of the test is low, and the effectiveness is greatly reduced), and the effective coverage rate of the test is lower for the screen with larger size; how to ensure that the support frame presents a relatively regular arc when bending the support frame is the key for perfecting the bending performance test of the flexible curved screen.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides a computer curved screen bending performance testing device which can be used for testing the limit bending amplitude and the limit bending times of a flexible curved screen in both a research and development stage and a production stage; when the middle point of the elastic material is fixed and pulled at two ends, the curvature radius of the bent part is gradually increased from the fixed position to the pulling position until the bent part is flat, so that the difference of the bending degree of each part of the bent screen is large.
The technical scheme adopted by the invention is as follows: the invention provides a device for testing the bending performance of a computer curved screen, which comprises an arched self-compensation type reference bending mechanism, a lockable reciprocating bending mechanism, a bending limit adjusting mechanism and a protective base assembly, the bow-shaped self-compensation type reference bending mechanism is arranged on the protective base component, the bow-shaped self-compensation type reference bending mechanism has the function of self-adaptively compensating the self curvature, the lockable reciprocating bending mechanism is arranged on the bending limit adjusting mechanism, the lockable reciprocating bending mechanism can control the flexible curved screen to be bent circularly in a certain amplitude, thereby calculating the bending times, the bending limit adjusting mechanism is arranged on the protective base component, the complete amplitude of the bow-shaped self-compensation type reference bending mechanism can be changed through the bending limit adjusting mechanism, therefore, the complete limit of the flexible curved screen is measured, and the protective base assembly has a protective function.
Further, bow-shaped self-compensating benchmark bending mechanism includes bow-shaped benchmark bending structure, automatic curvature compensation structure, the fixed subassembly of bending structure and screen left-hand thread laminating mechanism, bow-shaped benchmark bending structure is located on the protection base subassembly, and bow-shaped benchmark bending structure is the benchmark bearing structure that flexible curved surface screen bent, automatic curvature compensation structure is located on the protection base subassembly, can carry out curvature compensation to bow-shaped benchmark bending structure self-adaptation through automatic curvature compensation structure, the fixed subassembly of bending structure is located on bow-shaped benchmark bending structure, screen left-hand thread laminating mechanism symmetry is located on bow-shaped benchmark bending structure, can fix the flexible curved surface screen through screen left-hand thread laminating mechanism.
Preferably, the bow-shaped reference bending structure comprises an elastic bending frame, a follow-up stand column and an inner support roller, a central fixing cylinder is arranged on the elastic bending frame, the bottom end of the central fixing cylinder is arranged in the protective base assembly, elastic bending arms are symmetrically arranged on the central fixing cylinder and are made of elastic materials, the central fixing cylinder is made of rigid materials, a bending frame back limiting column is arranged on one side of each elastic bending arm in an array mode, the position of the flexible curved screen can be limited by the bending frame back limiting column, the flexible curved screen is prevented from shifting up and down, the follow-up stand column is clamped between the two groups of elastic bending arms, the follow-up stand column and the elastic bending arms are connected in a welding mode, the inner support roller is rotatably arranged on the follow-up stand column, and the inner support roller has the function of reducing friction force caused by relative sliding between the flexible curved screen and the bow-shaped reference bending structure during bending .
As a further preferred aspect of the present invention, the automatic curvature compensation structure includes a curvature compensation spring and a spring mounting substrate, the spring mounting substrate is engaged with the protection type base assembly, the curvature compensation spring array is disposed on the spring mounting substrate, the other end of the curvature compensation spring is disposed on the elastic bending arm, and the curvature compensation spring can provide elastic forces of different magnitudes according to different compression amounts of the curvature compensation spring.
As a further preferred aspect of the present invention, the curved structure fixing assembly includes a curved frame end closing plate, a tension fixing buckle and a curved frame fixing frame. The both ends of elasticity crooked arm are located to crooked frame tip shrouding block, and crooked frame tip shrouding has the effect of consolidating the elasticity crooked frame, taut fixed hasp is located on crooked frame tip shrouding, draw during tight fixed hasp block is located protection base subassembly, the fixed cylindrical top block in center is located in the crooked frame mount, and crooked frame mount has the effect of fixed bow-shaped benchmark curved structure.
As a further preferred aspect of the present invention, the screen left-hand thread attaching mechanism includes a flexible curved screen, a left-hand thread roller bracket and a left-hand thread roller body, the left-hand thread roller bracket is symmetrically disposed on the elastic bending arm, the left-hand thread roller body is rotatably disposed on the left-hand thread roller bracket, the left-hand thread roller bracket and the left-hand thread roller body have an effect of bending the flexible curved screen together with the elastic bending frame, the flexible curved screen is clamped between the left-hand thread roller body and the inner support roller, and one end of the flexible curved screen is provided with a detection data line.
Furthermore, the lockable reciprocating bending mechanism comprises a circulating sliding assembly and a circumferential driving assembly, the circulating sliding assembly is arranged on the bending limit adjusting mechanism, the circumferential driving assembly is arranged on the bending limit adjusting mechanism, the lockable reciprocating bending mechanism is of a crank slider structure, and the lockable reciprocating bending mechanism can carry out circular bending of the elastic bending frame through linear reciprocating motion of the circulating special-shaped slider.
Preferably, the circulating sliding assembly comprises an inverted-V-shaped profile base, a guide rail mounting plate, a circulating linear guide rail, a circulating special-shaped sliding block, a sliding block locking pin and a bending driving pull ring, the inverted-V-shaped profile base is arranged on the bending limit adjusting mechanism, the guide rail mounting plate is arranged on the inverted-V-shaped profile base, a mounting plate pin hole is formed in the guide rail mounting plate, the circulating linear guide rail is symmetrically arranged on the guide rail mounting plate, the circulating special-shaped sliding block is clamped and slidably arranged on the circulating linear guide rail, a sliding block pin hole and a sliding block central convex shaft are formed in the circulating special-shaped sliding block, the sliding block locking pin is clamped and arranged in the sliding block pin hole and the mounting plate pin hole, the guide rail mounting plate and the circulating special-shaped sliding block are fixed through the sliding block locking pin, and the locking and the opening of the relative positions of the circulating special-shaped sliding block and the guide rail mounting plate can be controlled by bending the driving pull ring, the device is characterized in that a fixing ring is arranged on the bending driving pull ring, the bending driving pull ring is arranged on the fixing ring through the fixing ring in a clamping mode, the bending driving pull ring is symmetrically provided with bending tensioning ropes, and the end portions of the bending tensioning ropes are fixed on a tensioning fixing lock catch.
As a further preferred aspect of the present invention, the circular driving assembly includes a circular bending driving motor, a circular bending driving disk, a connecting rod driving shaft, and a slider driving connecting rod, the circular bending driving motor is disposed on the bending limit adjusting mechanism, the circular bending driving disk is provided with a disk center circular truncated cone, the circular bending driving disk is engaged with an output shaft of the circular bending driving motor through the disk center circular truncated cone, the circular bending driving disk is provided with eccentric circular holes, the eccentric circular holes are spirally arranged, the center distances between each group of the eccentric circular holes and the disk center circular truncated cone are different, the amplitude of circular bending can be changed by inserting the connecting rod driving shaft into different eccentric circular holes, the connecting rod driving shaft is engaged with one group of the eccentric circular holes, the slider driving connecting rod is symmetrically provided with connecting rod end hinge holes, the slider driving connecting rod is rotatably disposed on the connecting rod driving shaft through one group of the connecting rod end hinge holes, the slide block driving connecting rod is arranged on the slide block central convex shaft in a rotating mode through the other group of hinge holes at the end part of the connecting rod.
Further, limit adjustment mechanism bends includes ball module, magnetic grid chi and encoder, the ball module is located on the protection base subassembly, the ball module includes module fixed part and can be on the module fixed part gliding module sliding part, the magnetic grid chi is located on the module fixed part, the encoder is located on the module sliding part, the ya font section bar base is located on the module sliding part, circulation bend driving motor locates on the module sliding part, can read the position of module sliding part in real time through magnetic grid chi and encoder.
Further, protection formula base subassembly includes square base, module bottom plate, transparent protection casing, pixel detection module and operating panel, be equipped with the base round hole on the square base, the base round hole is located to the fixed cylindrical lower part block in center, the module bottom plate is located on the square base, the ball screw module is located on the module bottom plate, on the square base was located to transparent protection casing, transparent protection casing was transparent material, and transparent protection casing has the guard action, spring mounting base plate block is located in the inner wall of transparent protection casing, crooked frame mount block is located on the inner wall of transparent protection casing, pixel detection module locates on the square base, flexible curved surface screen and pixel detection module are through detecting data line communication connection, pixel detection module and operating panel communication connection.
The invention with the structure has the following beneficial effects:
(1) the method can respectively test the limit bending amplitude and the limit bending times of the flexible curved screen in a research and development stage and test the qualification of the bending amplitude and the bending times of a product in a production stage;
(2) the bow-shaped self-compensation type reference bending mechanism can reduce the curvature radius difference of each part of the flexible curved screen during bending, so that the flexible curved screen and the elastic bending arm present relatively regular circular arcs;
(3) the flexible curved screen can be supported from the inside when the flexible curved screen is bent through the bow-shaped reference bending structure, so that the shape of the flexible curved screen is limited;
(4) the bending of the elastic bending arm can be adaptively compensated by regions through an automatic curvature compensation structure: the original bending radius of the middle position is small, the displacement amplitude is small, and the compression amount and the elasticity of the corresponding curvature compensation spring are also small, so that the reduction amount of the bending radius is also small under the action of the elasticity of the curvature compensation spring; the radius of the edge position is large, the displacement amplitude is large, and the compression amount and the elasticity of the corresponding curvature compensation spring are also large, so that the reduction amount of the bending radius is also large under the action of the elasticity of the curvature compensation spring, and the difference value of the curvature radius of the elastic bending arm at the middle position and the edge position is further reduced;
(5) the flexible curved screen can be tightly attached to the bow-shaped reference bending structure through the left-hand thread roller bracket and the left-hand thread roller body, so that the bending of the flexible curved screen can be accurately reflected by the bending of the elastic bending arm;
(6) the flexible curved screen can be prevented from moving up and down through the back limiting column of the bending frame;
(7) the end part of the elastic bending arm can be pulled to be bent in a reciprocating manner through the lockable reciprocating bending mechanism;
(8) the locking and the unlocking of the crank-slider mechanism can be controlled through the slider locking pin;
(9) the limit bending amplitude of the flexible curved screen can be tested through the bending limit adjusting mechanism.
Drawings
FIG. 1 is a perspective view of a device for testing bending performance of a computer curved screen according to the present invention;
FIG. 2 is a front view of a device for testing bending performance of a computer curved screen according to the present invention;
FIG. 3 is a top view of a computer curved screen bending performance testing device according to the present invention;
FIG. 4 is a left side view of a computer curved screen bending performance testing device according to the present invention;
FIG. 5 is a cross-sectional view taken along section line A-A of FIG. 2;
FIG. 6 is a cross-sectional view taken along section line B-B of FIG. 2;
FIG. 7 is a schematic structural diagram of an arcuate self-compensating reference bending mechanism of a device for testing bending performance of a computer curved screen according to the present invention;
FIG. 8 is a schematic structural diagram of a lockable reciprocating bending mechanism of a device for testing bending performance of a computer curved screen according to the present invention;
FIG. 9 is a schematic structural diagram of a bending limit adjusting mechanism of the device for testing bending performance of a computer curved screen according to the present invention;
FIG. 10 is a schematic structural diagram of a protective base assembly of the device for testing bending performance of a computer curved screen according to the present invention;
FIG. 11 is an enlarged view of a portion of FIG. 6 at I;
FIG. 12 is an enlarged view of a portion of FIG. 5 at II;
fig. 13 is a partial enlarged view of fig. 5 at iii.
The device comprises an arched self-compensation type reference bending mechanism 1, an arched self-compensation type reference bending mechanism 2, a lockable reciprocating bending mechanism 3, a bending limit adjusting mechanism 4, a protective base assembly 5, an arched reference bending structure 6, an automatic curvature compensation structure 7, a bending structure fixing assembly 8, a screen back buckling and laminating mechanism 9, an elastic bending frame 10, a follow-up type upright post 11, an inner supporting roller 12, a curvature compensation spring 13, a spring mounting base plate 14, a bending frame end sealing plate 15, a tensioning fixing locking buckle 16, a bending frame fixing frame 17, a flexible curved screen 18, a back buckling roller support 19, a back buckling roller body 20, an elastic bending arm 21, a central fixing cylinder 22, a bending frame back limiting post 23, a detection data line 24, a circular sliding assembly 25, a circumference driving assembly 26, a herringbone profile base 27, a detection data line 25, a circumference driving assembly 26, a herringbone profile base 27, a protective base assembly, a flexible bending frame mounting base assembly, a flexible curved frame, a bending frame end sealing plate, a flexible curved frame, a flexible curved screen, a flexible curved frame, a curved frame, the device comprises a guide rail mounting plate, 28, a circulating linear guide rail, 29, a circulating special-shaped slide block, 30, a slide block locking pin, 31, a bending driving pull ring, 32, a circulating bending driving motor, 33, a circulating bending driving disc, 34, a connecting rod driving shaft, 35, a slide block driving connecting rod, 36, a mounting plate pin hole, 37, a slide block pin hole, 38, a slide block center convex shaft, 39, a fixed ring, 40, a bending tensioning rope, 41, an eccentric circular hole, 42, a disc center circular table, 43, a connecting rod end hinging hole, 44, a ball screw module, 45, a magnetic grid ruler, 46, an encoder, 47, a module sliding part, 48, a module fixing part, 49, a square base, 50, a module bottom plate, 51, a transparent protective cover, 52, a pixel detection module, 53, an operation panel, 54 and a base circular hole.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
As shown in figure 1, the invention provides a computer curved screen bending performance testing device, which comprises an arch-shaped self-compensation type reference bending mechanism 1, a lockable reciprocating bending mechanism 2, a bending limit adjusting mechanism 3 and a protective base component 4, wherein the arch-shaped self-compensation type reference bending mechanism 1 is arranged on the protective base component 4, the arch-shaped self-compensation type reference bending mechanism 1 has the function of self-adaptively compensating the self curvature, the lockable reciprocating bending mechanism 2 is arranged on the bending limit adjusting mechanism 3, the lockable reciprocating bending mechanism 2 can control a flexible curved screen 17 to be circularly bent at a certain amplitude so as to calculate the bending times, the bending limit adjusting mechanism 3 is arranged on the protective base component 4, the complete amplitude of the arch-shaped self-compensation type reference bending mechanism 1 can be changed through the bending limit adjusting mechanism 3 so as to measure the complete limit of the flexible curved screen 17, the protected base assembly 4 has a protective function.
As shown in fig. 1 and 10, the protection-type base assembly 4 includes a square base 49, a module base plate 50, a transparent shield 51, a pixel detection module 52 and an operation panel 53, the square base 49 is provided with a base circular hole 54, the lower portion of the central fixing cylinder 21 is clamped in the base circular hole 54, the module bottom plate 50 is arranged on the square base 49, the ball screw module 44 is arranged on the module bottom plate 50, the transparent protective cover 51 is arranged on the square base 49, the transparent protective cover 51 is made of transparent material, the transparent protective cover 51 has a protective function, the spring mounting base plate 13 is clamped in the inner wall of the transparent protective cover 51, the bending frame fixing frame 16 is clamped on the inner wall of the transparent protective cover 51, the pixel detection module 52 is arranged on the square base 49, the flexible curved screen 17 is in communication connection with the pixel detection module 52 through the detection data line 23, and the pixel detection module 52 is in communication connection with the operation panel 53.
As shown in fig. 1, 2, and 9, bending limit adjusting mechanism 3 includes a ball screw module 44, a magnetic scale 45, and an encoder 46, ball screw module 44 is disposed on protective base component 4, ball screw module 44 includes a module fixing portion 48 and a module sliding portion 47 capable of sliding on module fixing portion 48, magnetic scale 45 is disposed on module fixing portion 48, encoder 46 is disposed on module sliding portion 47, a herringbone-shaped profile base 26 is disposed on module sliding portion 47, circulating bending drive motor 32 is disposed on module sliding portion 47, and the position of module sliding portion 47 can be read in real time through ball screw module 45 and encoder 46.
As shown in fig. 1, 3, 4, 6, 8 and 12, the lockable reciprocating bending mechanism 2 comprises a circulating sliding assembly 24 and a circumferential driving assembly 25, the circulating sliding assembly 24 is arranged on the bending limit adjusting mechanism 3, the circumferential driving assembly 25 is arranged on the bending limit adjusting mechanism 3, and the lockable reciprocating bending mechanism 2 is of a crank-slider structure and can carry the elastic bending frame 9 to bend circularly by the linear reciprocating motion of a circulating special-shaped slider 29; the circulating sliding assembly 24 comprises an inverted-V-shaped profile base 26, a guide rail mounting plate 27, a circulating linear guide rail 28, a circulating special-shaped sliding block 29, a sliding block locking pin 30 and a bending driving pull ring 31, the inverted-V-shaped profile base 26 is arranged on the bending limit adjusting mechanism 3, the guide rail mounting plate 27 is arranged on the inverted-V-shaped profile base 26, a mounting plate pin hole 36 is arranged on the guide rail mounting plate 27, the circulating linear guide rail 28 is symmetrically arranged on the guide rail mounting plate 27, the circulating special-shaped sliding block 29 is clamped and slidably arranged on the circulating linear guide rail 28, a sliding block pin hole 37 and a sliding block central convex shaft 38 are arranged on the circulating special-shaped sliding block 29, the sliding block locking pin 30 is clamped and arranged in the sliding block pin hole 37 and the mounting plate pin hole 36, the guide rail mounting plate 27 and the circulating special-shaped sliding block 29 are fixed through the sliding block locking pin 30, and the locking and the opening of the relative positions of the circulating special-shaped sliding block 29 and the guide rail mounting plate 27 can be controlled through the bending driving pull ring 31, a fixed ring 39 is arranged on the bending driving pull ring 31, the bending driving pull ring 31 is clamped on the fixed ring 39 through the fixed ring 39, bending tensioning ropes 40 are symmetrically arranged on the bending driving pull ring 31, and the end parts of the bending tensioning ropes 40 are fixed on the tensioning fixed lock catch 15; the circular driving assembly 25 comprises a circular bending driving motor 32, a circular bending driving disc 33, a connecting rod driving shaft 34 and a sliding block driving connecting rod 35, the circular bending driving motor 32 is arranged on the bending limit adjusting mechanism 3, a disc center circular truncated cone 42 is arranged on the circular bending driving disc 33, the circular bending driving disc 33 is clamped on an output shaft of the circular bending driving motor 32 through the disc center circular truncated cone 42, eccentric circular holes 41 are arranged on the circular bending driving disc 33, the eccentric circular holes 41 are spirally arranged, the center distances between each group of the eccentric circular holes 41 and the disc center circular truncated cone 42 are different, the amplitude of circular bending can be changed by inserting the connecting rod driving shaft 34 into different eccentric circular holes 41, the connecting rod driving shaft 34 is clamped in one group of the eccentric circular holes 41, connecting rod end part hinging holes 43 are symmetrically arranged on the sliding block driving connecting rod 35, the sliding block driving connecting rod 35 is rotatably arranged on the connecting rod driving shaft 34 through one group of the connecting rod end part holes 43, the slider drive link 35 is rotatably mounted on the slider central boss shaft 38 through another set of link end hinge holes 43.
As shown in fig. 1, 2, 3, 7, 11 and 13, the bow-shaped self-compensation type reference bending mechanism 1 includes a bow-shaped reference bending structure 5, an automatic curvature compensation structure 6, a bending structure fixing component 7 and a screen back-off attaching mechanism 8, the bow-shaped reference bending structure 5 is arranged on the protection type base component 4, the bow-shaped reference bending structure 5 is a reference supporting structure for bending the flexible curved screen 17, the automatic curvature compensation structure 6 is arranged on the protection type base component 4, the bow-shaped reference bending structure 5 can be subjected to self-adaptive curvature compensation through the automatic curvature compensation structure 6, the bending structure fixing component 7 is arranged on the bow-shaped reference bending structure 5, the screen back-off attaching mechanism 8 is symmetrically arranged on the bow-shaped reference bending structure 5, and the flexible curved screen 17 can be fixed through the screen back-off attaching mechanism 8; bow-shaped benchmark curved structure 5 includes elastic bending frame 9, trailing type stand 10 and interior support roller 11, be equipped with central stationary cylinder 21 on the elastic bending frame 9, protective base subassembly 4 is located to the bottom of central stationary cylinder 21, elastic bending frame 9 symmetry is equipped with elastic bending arm 20 on central stationary cylinder 21, elastic bending arm 20 is the elastic material, central stationary cylinder 21 is the rigidity material, elastic bending frame 9 is equipped with the spacing post 22 in bending frame back in one side array of elastic bending arm 20, the spacing post 22 in bending frame back can restrict the position of flexible curved screen 17, prevent that flexible curved screen 17 from taking place skew from top to bottom, trailing type stand 10 block is located between two sets of elastic bending arms 20, trailing type stand 10 and elastic bending arm 20 welded connection, interior support roller 11 rotates and locates on trailing type stand 10, interior support roller 11 has when reducing to bend and causes because of relative slip between flexible curved screen 17 and the bow-shaped benchmark curved structure 5 The action of friction force; the automatic curvature compensation structure 6 comprises a curvature compensation spring 12 and a spring mounting substrate 13, the spring mounting substrate 13 is clamped in the protective base assembly 4, the curvature compensation spring 12 is arranged on the spring mounting substrate 13 in an array mode, the other end of the curvature compensation spring 12 is arranged on the elastic bending arm 20, and the curvature compensation spring 12 can provide elastic force with different sizes according to different compression amounts of the curvature compensation spring 12; the flexure mechanism mounting assembly 7 includes a flexure frame end closure 14, a tension mounting latch 15 and a flexure frame mount 16. The bending frame end sealing plates 14 are clamped at two ends of the elastic bending arm 20, the bending frame end sealing plates 14 have the function of reinforcing the elastic bending frame 9, the tensioning fixing lock catch 15 is arranged on the bending frame end sealing plates 14, the tensioning fixing lock catch 15 is clamped in the protective base component 4, the top end of the central fixing cylinder 21 is clamped in the bending frame fixing frame 16, and the bending frame fixing frame 16 has the function of fixing the bow-shaped reference bending structure 5; the screen left-hand thread laminating mechanism 8 comprises a flexible curved screen 17, a left-hand thread roller support 18 and a left-hand thread roller body 19, the left-hand thread roller support 18 is symmetrically arranged on an elastic bending arm 20, the left-hand thread roller body 19 is rotatably arranged on the left-hand thread roller support 18, the left-hand thread roller support 18 and the left-hand thread roller body 19 have the effect that the flexible curved screen 17 is bent along with the elastic bending frame 9, the flexible curved screen 17 is clamped between the left-hand thread roller body 19 and the inner support roller 11, and one end of the flexible curved screen 17 is provided with a detection data line 23.
When the flexible curved screen is used specifically, firstly, when the elastic bending arm 20 is in a straight state, a user slides the flexible curved screen 17 into a gap between the inner support roller 11 and the left-hand thread roller body 19, and the flexible curved screen is prevented from moving longitudinally by clamping and stopping the back limiting column 22 of the bending frame;
when a bending limit test in a research and development stage is carried out, the circulating special-shaped slider 29 and the guide rail mounting plate 27 are locked through the slider locking pin 30, then the elastic bending arm 20 is driven to be bent slowly through the sliding of the ball screw module 44, the curvature of each part of the elastic bending arm 20 is close to that under the support of the curvature compensation spring 12, along with the increase of the bending amplitude, whether the shell of the flexible curved screen 17 of the pipe material is cracked or broken through a visual method is detected, the pixel detection module 52 reads whether the inside of the flexible curved screen 17 is damaged or not through the detection data line 23, and then the position of the module sliding part 47 when the inside or the outside of the flexible curved screen 17 is damaged is read through the magnetic grating ruler 45 and the encoder 46, so that the bending limit of the flexible curved screen 17 is obtained;
when the bending limit test in the quality inspection stage is performed, the operation steps are the same as those in the research and development stage, and the difference is that the module sliding part 47 is slowly slid to the specified position, whether the inside and the outside of the flexible curved screen 17 are damaged or not is observed, if the inside and the outside of the flexible curved screen are damaged, the quality is qualified, and if the inside and the outside of the flexible curved screen are damaged, the quality is unqualified;
when a bending frequency test in a research and development stage is carried out, the sliding block locking pin 30 is pulled out, the module sliding part 47 is adjusted to a proper position and then stopped, the relative fixation of the module sliding part 47 and the module fixing part 48 is kept by the aid of the motor, then the circulating bending driving motor 32 is started, the circulating bending driving disc 33 drives the circulating special-shaped sliding block 29 to linearly and repeatedly slide through the sliding block driving connecting rod 35, the circulating special-shaped sliding block 29 pulls and fastens the fixed lock catch 15 through the bending tensioning rope 40 during sliding, and further drives the two ends of the elastic bending arm 20 to bend until the inside or the outside of the flexible curved screen 17 is damaged, the number of turns of the rotating of the circulating bending driving motor 32 is recorded, and therefore the limit circulating bending frequency of the flexible curved screen 17 is obtained;
when the bending times in the quality inspection stage are tested, the operation steps are the same as the bending times in the research and development stage, and the difference is that the flexible curved screen 17 is bent for a fixed number of times in a circulating manner, whether the flexible curved screen 17 is damaged internally or externally is judged, if the flexible curved screen 17 is not damaged, the quality is qualified, and if the flexible curved screen is damaged, the quality is unqualified;
when the bending frequency test in the research and development stage and the bending frequency test in the quality inspection stage are performed, the bending movement range of the circular bending can be adjusted by inserting the link driving shaft 34 into different eccentric circular holes 41, and the pre-bending range of the circular bending can be adjusted by the position of the sliding module sliding portion 47.
The above is the overall working process of the invention, and the steps are repeated when the device is used next time.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a computer curved surface screen capability test device that bends which characterized in that: the automatic locking device comprises an arched self-compensation type reference bending mechanism (1), a lockable reciprocating bending mechanism (2), a bending limit adjusting mechanism (3) and a protective base assembly (4), wherein the arched self-compensation type reference bending mechanism (1) is arranged on the protective base assembly (4), the lockable reciprocating bending mechanism (2) is arranged on the bending limit adjusting mechanism (3), and the bending limit adjusting mechanism (3) is arranged on the protective base assembly (4); bow-shaped self compensating formula benchmark bending mechanism (1) is including bow-shaped benchmark bending structure (5), automatic curvature compensating structure (6), the fixed subassembly of bending structure (7) and screen left-hand thread laminating mechanism (8), bow-shaped benchmark bending structure (5) are located on protection formula base subassembly (4), automatic curvature compensating structure (6) are located on protection formula base subassembly (4), bow-shaped benchmark bending structure (5) are located in fixed subassembly of bending structure (7), screen left-hand thread laminating mechanism (8) symmetry is located on bow-shaped benchmark bending structure (5).
2. The device for testing the bending performance of the computer curved screen according to claim 1, wherein: bow-shaped benchmark curved structure (5) are including elasticity bending frame (9), trailing type stand (10) and interior support roller (11), be equipped with central stationary cylinder (21) on elasticity bending frame (9), the bottom of central stationary cylinder (21) is located in protection formula base subassembly (4), elasticity bending frame (9) symmetry is equipped with elasticity bending arm (20) on central stationary cylinder (21), elasticity bending frame (9) are equipped with crooked spacing post in frame back (22) in one side array of elasticity bending arm (20), trailing type stand (10) block is located between two sets of elasticity bending arm (20), trailing type stand (10) and elasticity bending arm (20) welded connection, interior support roller (11) rotate locate on trailing type stand (10).
3. The device for testing the bending performance of the computer curved screen according to claim 2, wherein: automatic camber compensation structure (6) are including camber compensation spring (12) and spring mounting base plate (13), during protection formula base subassembly (4) was located to spring mounting base plate (13) block, camber compensation spring (12) array was located on spring mounting base plate (13), the other end of camber compensation spring (12) is located on elastic bending arm (20).
4. The device for testing the bending performance of the computer curved screen according to claim 3, wherein: the fixed subassembly of crooked structure (7) include crooked frame tip shrouding (14), draw and fasten fixed hasp (15) and crooked frame mount (16), the both ends of elasticity crooked arm (20) are located to crooked frame tip shrouding (14) block, draw and fasten fixed hasp (15) and locate on crooked frame tip shrouding (14), draw and fasten fixed hasp (15) block and locate in protection formula base subassembly (4), the top block of center stationary cylinder (21) is located in crooked frame mount (16).
5. The device for testing the bending performance of the computer curved screen according to claim 4, wherein: the screen left-hand thread laminating mechanism (8) comprises a flexible curved screen (17), a left-hand thread roller support (18) and a left-hand thread roller body (19), the left-hand thread roller support (18) is symmetrically arranged on an elastic bending arm (20), the left-hand thread roller body (19) is rotatably arranged on the left-hand thread roller support (18), the flexible curved screen (17) is clamped between the left-hand thread roller body (19) and an inner support roller (11), and one end of the flexible curved screen (17) is provided with a detection data line (23).
6. The device for testing the bending performance of the computer curved screen according to claim 5, wherein: the lockable reciprocating bending mechanism (2) comprises a circulating sliding assembly (24) and a circumferential driving assembly (25), the circulating sliding assembly (24) is arranged on the bending limit adjusting mechanism (3), and the circumferential driving assembly (25) is arranged on the bending limit adjusting mechanism (3).
7. The device for testing the bending performance of the computer curved screen according to claim 6, wherein: the circulating sliding assembly (24) comprises an inverted-V-shaped profile base (26), a guide rail mounting plate (27), a circulating linear guide rail (28), a circulating special-shaped sliding block (29), a sliding block locking pin (30) and a bending driving pull ring (31), wherein the inverted-V-shaped profile base (26) is arranged on the bending limit adjusting mechanism (3), the guide rail mounting plate (27) is arranged on the inverted-V-shaped profile base (26), mounting plate pin holes (36) are formed in the guide rail mounting plate (27), the circulating linear guide rail (28) is symmetrically arranged on the guide rail mounting plate (27), the circulating special-shaped sliding block (29) is clamped and slidably arranged on the circulating linear guide rail (28), a sliding block pin hole (37) and a sliding block center convex shaft (38) are formed in the circulating special-shaped sliding block (29), and the sliding block locking pin (30) is clamped and arranged in the sliding block pin hole (37) and the mounting plate pin hole (36), it is fixed through slider lock round pin (30) between guide rail mounting panel (27) and circulation dysmorphism slider (29), be equipped with fixed ring (39) on bending drive pull ring (31), bend drive pull ring (31) and locate on fixed ring (39) through fixed ring (39) block, bend drive pull ring (31) and go up the symmetry and be equipped with the stretch-draw rope (40) of bending, the tip of the stretch-draw rope (40) of bending is fixed in on stretch-draw fixation hasp (15).
8. The device for testing the bending performance of the computer curved screen according to claim 7, wherein: the circular driving assembly (25) comprises a circular bending driving motor (32), a circular bending driving disc (33), a connecting rod driving shaft (34) and a sliding block driving connecting rod (35), the circular bending driving motor (32) is arranged on the bending limit adjusting mechanism (3), a disc center circular truncated cone (42) is arranged on the circular bending driving disc (33), the circular bending driving disc (33) is clamped on an output shaft of the circular bending driving motor (32) through the disc center circular truncated cone (42), eccentric circular holes (41) are formed in the circular bending driving disc (33), the eccentric circular holes (41) are arranged in a spiral mode, the center distances between each group of eccentric circular holes (41) and the disc center circular truncated cone (42) are unequal, the connecting rod driving shaft (34) is clamped in one group of the eccentric circular holes (41), and connecting rod end portion hinging holes (43) are symmetrically formed in the sliding block driving connecting rod (35), the slider driving connecting rod (35) is rotatably arranged on the connecting rod driving shaft (34) through one group of the connecting rod end hinging holes (43), and the slider driving connecting rod (35) is rotatably arranged on the slider central convex shaft (38) through the other group of the connecting rod end hinging holes (43).
9. The device for testing the bending performance of the computer curved screen according to claim 8, wherein: bend limit adjustment mechanism (3) and include ball screw module (44), magnetic grid chi (45) and encoder (46), protective type base subassembly (4) is located in ball screw module (44), ball screw module (44) include module fixed part (48) and can be on module fixed part (48) gliding module sliding part (47), on module fixed part (48) is located in magnetic grid chi (45), on module sliding part (47) is located in encoder (46), inferior font type section bar base (26) are located on module sliding part (47), circulation bending driving motor (32) are located on module sliding part (47).
10. The device for testing the bending performance of the computer curved screen according to claim 9, wherein: the protection type base assembly (4) comprises a square base (49), a module bottom plate (50), a transparent protective cover (51), a pixel detection module (52) and an operation panel (53), wherein a base round hole (54) is formed in the square base (49), the lower part of a center fixing cylinder (21) is clamped in the base round hole (54), the module bottom plate (50) is arranged on the square base (49), a ball screw module (44) is arranged on the module bottom plate (50), the transparent protective cover (51) is arranged on the square base (49), a spring mounting substrate (13) is clamped in the inner wall of the transparent protective cover (51), a bending frame fixing frame (16) is clamped on the inner wall of the transparent protective cover (51), the pixel detection module (52) is arranged on the square base (49), and the flexible curved screen (17) and the pixel detection module (52) are in communication connection through a detection data line (23), the pixel detection module (52) is in communication connection with an operation panel (53).
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| CN202111522429.3A CN114414219B (en) | 2021-12-14 | 2021-12-14 | Computer curved surface screen bending performance testing device |
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| CN202111522429.3A CN114414219B (en) | 2021-12-14 | 2021-12-14 | Computer curved surface screen bending performance testing device |
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| CN207894752U (en) * | 2017-12-20 | 2018-09-21 | 武汉艾特米克超能新材料科技有限公司 | A kind of resist bending performance detection apparatus of flexible electronic product |
| WO2020024479A1 (en) * | 2018-07-30 | 2020-02-06 | 武汉华星光电半导体显示技术有限公司 | Bright spot compensation method and device for curved screen |
| CN110987966A (en) * | 2019-12-27 | 2020-04-10 | 上海天马微电子有限公司 | Detection method and detection system for curved substrate |
| CN111801566A (en) * | 2018-02-28 | 2020-10-20 | 深圳市柔宇科技股份有限公司 | Flexible display screen cyclic bending life test equipment and test method |
| CN112964457A (en) * | 2021-04-01 | 2021-06-15 | 马伟红 | LED screen backlight module performance test system and test method |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN207894752U (en) * | 2017-12-20 | 2018-09-21 | 武汉艾特米克超能新材料科技有限公司 | A kind of resist bending performance detection apparatus of flexible electronic product |
| CN111801566A (en) * | 2018-02-28 | 2020-10-20 | 深圳市柔宇科技股份有限公司 | Flexible display screen cyclic bending life test equipment and test method |
| WO2020024479A1 (en) * | 2018-07-30 | 2020-02-06 | 武汉华星光电半导体显示技术有限公司 | Bright spot compensation method and device for curved screen |
| CN110987966A (en) * | 2019-12-27 | 2020-04-10 | 上海天马微电子有限公司 | Detection method and detection system for curved substrate |
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