CN114414219B - Computer curved surface screen bending performance testing device - Google Patents
Computer curved surface screen bending performance testing device Download PDFInfo
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- CN114414219B CN114414219B CN202111522429.3A CN202111522429A CN114414219B CN 114414219 B CN114414219 B CN 114414219B CN 202111522429 A CN202111522429 A CN 202111522429A CN 114414219 B CN114414219 B CN 114414219B
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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
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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 arch-shaped 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 a calculus idea, and each area is self-adaptively compensated according to different offset amplitudes, so that 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 bend the support frame ensures that the support frame presents a relatively regular arc shape 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 computer curved screen bending performance testing device 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, wherein the arched self-compensation type reference bending mechanism is arranged on the protective base assembly, the arched self-compensation type reference bending mechanism has the function of self-adaptive compensation of self curvature, the lockable reciprocating bending mechanism is arranged on the bending limit adjusting mechanism, the lockable reciprocating bending mechanism can control a flexible curved screen to be bent circularly in a certain amplitude, so that the bending times are calculated, the bending limit adjusting mechanism is arranged on the protective base assembly, the full amplitude of the arched self-compensation type reference bending mechanism can be changed through the bending limit adjusting mechanism, the full 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 supporting 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 supporting roller is rotatably arranged on the follow-up stand column, and the inner supporting 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 buckling attaching mechanism includes a flexible curved screen, a left-hand buckling roller bracket and a left-hand buckling roller body, the left-hand buckling roller bracket is symmetrically disposed on the elastic bending arm, the left-hand buckling roller body is rotatably disposed on the left-hand buckling roller bracket, the left-hand buckling roller bracket and the left-hand buckling roller body have an effect of bending the flexible curved screen along with the elastic bending frame, the flexible curved screen is clamped between the left-hand buckling roller body and the inner supporting 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 circulation slip subassembly includes ya font section bar base, guide rail mounting panel, circulation linear guide, circulation dysmorphism slider, slider locking round pin and the drive pull ring of bending, ya font section bar base is located on the limit adjustment mechanism of bending, the guide rail mounting panel is located on ya font section bar base, be equipped with the mounting panel pinhole on the guide rail mounting panel, circulation linear guide symmetry is located on the guide rail mounting panel, circulation dysmorphism slider block slides and locates on the circulation linear guide, be equipped with slider pinhole and slider central protruding axle on the circulation dysmorphism slider, slider locking round pin block is located in slider pinhole and the mounting panel pinhole, it is fixed through slider locking round pin between guide rail mounting panel and the circulation dysmorphism slider, through the drive pull ring of bending, can control the locking and the opening of the relative position of circulation dysmorphism slider and guide rail mounting panel, be equipped with fixed ring on the drive pull ring of bending, the drive pull ring of bending is located fixed ring through fixed ring block on the drive pull ring, the symmetry is equipped with the rope of bending on the drive pull ring, the end fixing of the tensile rope of bending is in taut fixed lock and is buckled.
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 fastened on 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 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 fastened in one group of the eccentric circular holes, the slider driving connecting rod is symmetrically provided with connecting rod end portion hinge holes, the slider driving connecting rod is rotatably disposed on the connecting rod driving shaft through one group of the connecting rod end portion hinge holes, and the slider driving rod is rotatably disposed on the slider center convex shaft through the other group of the connecting rod end portion hinge holes.
Furthermore, 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 inferior font section bar base is located on the module sliding part, circulation bending 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 cylindrical lower part block of center fixation, 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 adopting 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 the 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 elastic force of the corresponding curvature compensation spring are also small, so that the reduction amount of the bending radius is also small under the elastic force action 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 support 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 sliding block mechanism can be controlled through the sliding block 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 isbase:Sub>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 curved-surface screen of a computer 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 taken 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.
Wherein, 1, an arch-shaped self-compensation type benchmark bending mechanism, 2, a lockable reciprocating bending mechanism, 3, a bending limit adjusting mechanism, 4, a protective base component, 5, an arch-shaped benchmark bending structure, 6, an automatic curvature compensation structure, 7, a bending structure fixing component, 8, a screen back-buckling attaching mechanism, 9, an elastic bending frame, 10, a follow-up upright post, 11, an inner supporting roller, 12, a curvature compensation spring, 13, a spring mounting substrate, 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 bracket, 19, a back-buckling roller body, 20, an elastic bending arm, 21, a central fixing cylinder, 22, a bending frame back limiting column, 23, a detection data line, 24, a circular sliding component, 25, a circumference driving component, 26, an I-shaped profile base, 27, a guide rail mounting plate, 28, a circular linear guide rail, 29, a circular special-shaped sliding block, 30, a sliding block locking pin, 31, a bending driving pull ring, 32, a circular bending driving motor, 33, a circular bending driving disc, 34, a connecting rod driving shaft, 35, a sliding block driving connecting rod, 36, a mounting plate pin hole, 37, a sliding block pin hole, 38, a sliding block central convex shaft, 39, a fixed ring, 40, a bending tensioning rope, 41, an eccentric circular hole, 42, a circular disc central circular table, 43, a connecting rod end part hinge 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to 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 orientations or positional relationships shown in the drawings, merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1, the invention provides a device for testing bending performance of a computer curved screen, 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 assembly 4, wherein the arch-shaped self-compensation type reference bending mechanism 1 is arranged on the protective base assembly 4, the arch-shaped self-compensation type reference bending mechanism 1 has the function of self-adaptive compensation of 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 the flexible curved screen 17 to be bent in a certain amplitude in a circulating manner, so that the bending times are calculated, the bending limit adjusting mechanism 3 is arranged on the protective base assembly 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 that the complete limit of the flexible curved screen 17 is measured, and the protective base assembly 4 has a protective function.
As shown in fig. 1 and 10, the protective base assembly 4 includes a square base 49, a module bottom plate 50, a transparent protective cover 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 engaged with the base circular hole 54, the module bottom plate 50 is disposed on the square base 49, the ball screw module 44 is disposed on the module bottom plate 50, the transparent protective cover 51 is disposed on the square base 49, the transparent protective cover 51 is made of a transparent material, the transparent protective cover 51 has a protective function, the spring mounting substrate 13 is engaged with the inner wall of the transparent protective cover 51, the bending frame fixing frame 16 is engaged with the inner wall of the transparent protective cover 51, the pixel detection module 52 is disposed on the square base 49, the flexible curved screen 17 and the pixel detection module 52 are in communication connection 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 circular sliding assembly 24 and a circumferential driving assembly 25, the circular 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 circular 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 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 central convex shaft 38 are formed in 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, the relative positions of the circulating special-shaped sliding block 29 and the guide rail mounting plate 27 can be controlled to be locked and unlocked through the bending driving pull ring 31, a fixing ring 39 is arranged on the bending driving pull ring 31, the bending driving pull ring 31 is clamped and arranged on the fixing ring 39, the bending tensioning rope 40 is symmetrically arranged on the pull ring 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 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 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 portion hinged holes 43 are symmetrically formed in 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 portion hinged holes 43, and the sliding block driving rod 35 is rotatably arranged on a sliding block center convex shaft 38 through the other group of the connecting rod end portion 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; the bow-shaped reference bending structure 5 comprises an elastic bending frame 9, a follow-up type upright post 10 and an inner supporting roller 11, wherein a central fixing cylinder 21 is arranged on the elastic bending frame 9, the bottom end of the central fixing cylinder 21 is arranged in the protective base assembly 4, elastic bending arms 20 are symmetrically arranged on the central fixing cylinder 21 of the elastic bending frame 9, the elastic bending arms 20 are made of elastic materials, the central fixing cylinder 21 is made of rigid materials, the elastic bending frame 9 is provided with a bending frame back limiting column 22 in an array mode on one side of each elastic bending arm 20, the bending frame back limiting column 22 can limit the position of the flexible curved screen 17, the flexible curved screen 17 is prevented from vertically shifting, the follow-up type upright post 10 is clamped between the two groups of elastic bending arms 20, the follow-up type upright post 10 is connected with the elastic bending arms 20 in a welding mode, the inner supporting roller 11 is rotatably arranged on the follow-up type upright post 10, and the inner supporting roller 11 has the function of reducing friction force caused by relative sliding between the flexible curved screen 17 and the bow-shaped reference bending structure 5 during bending; 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 supporting 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 (6)
1. The utility model provides a computer curved surface screen capability test device that bends which characterized in that: the device 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 assembly (4), wherein the arch-shaped 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); the bow-shaped self-compensation type benchmark bending mechanism (1) comprises a bow-shaped benchmark bending structure (5), an automatic curvature compensation structure (6), a bending structure fixing component (7) and a screen left-hand buckling laminating mechanism (8), wherein the bow-shaped benchmark bending structure (5) is arranged on the protection type base component (4), the automatic curvature compensation structure (6) is arranged on the protection type base component (4), the bending structure fixing component (7) is arranged on the bow-shaped benchmark bending structure (5), and the screen left-hand buckling laminating mechanism (8) is symmetrically arranged on the bow-shaped benchmark bending structure (5);
the bow-shaped reference bending structure (5) comprises an elastic bending frame (9), a follow-up type upright post (10) and an inner supporting roller (11), wherein a central fixing cylinder (21) is arranged on the elastic bending frame (9), the bottom end of the central fixing cylinder (21) is arranged in a protective base component (4), elastic bending arms (20) are symmetrically arranged on the central fixing cylinder (21) of the elastic bending frame (9), bending frame back limiting columns (22) are arranged on one sides of the elastic bending arms (20) of the elastic bending frame (9) in an array mode, the follow-up type upright post (10) is clamped between the two groups of elastic bending arms (20), the follow-up type upright post (10) and the elastic bending arms (20) are connected in a welding mode, and the inner supporting roller (11) is rotatably arranged on the follow-up type upright post (10);
the automatic curvature compensation structure (6) comprises curvature compensation springs (12) and a spring mounting substrate (13), the spring mounting substrate (13) is clamped in the protective base assembly (4), the curvature compensation springs (12) are arranged on the spring mounting substrate (13) in an array mode, and the other ends of the curvature compensation springs (12) are arranged on the elastic bending arms (20);
the bending structure fixing assembly (7) comprises bending frame end portion sealing plates (14), a tensioning fixing lock catch (15) and a bending frame fixing frame (16), the bending frame end portion sealing plates (14) are clamped at two ends of the elastic bending arms (20), the tensioning fixing lock catch (15) is arranged on the bending frame end portion sealing plates (14), the tensioning fixing lock catch (15) is clamped in the protective base assembly (4), and the top end of the central fixing cylinder (21) is clamped in the bending frame fixing frame (16);
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).
2. The device for testing the bending performance of the computer curved screen according to claim 1, 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).
3. The device for testing the bending performance of the computer curved screen according to claim 2, characterized in that: circulation slip subassembly (24) include inferior font section bar base (26), guide rail mounting panel (27), circulation linear guide (28), circulation dysmorphism slider (29), slider lock round pin (30) and bend drive pull ring (31), inferior font section bar base (26) are located on limit adjustment mechanism (3) of bending, guide rail mounting panel (27) are located on inferior font section bar base (26), be equipped with mounting panel pinhole (36) on guide rail mounting panel (27), circulation linear guide (28) symmetry is located on guide rail mounting panel (27), circulation dysmorphism slider (29) block slides and locates on circulation linear guide (28), be equipped with slider pinhole (37) and slider central protruding axle (38) on circulation dysmorphism slider (29), slider lock round pin (30) block is located in slider pinhole (37) and circulation mounting panel (36), it is fixed through slider lock round pin (30) between dysmorphism guide rail mounting panel (27) and the circulation slider (29) to bend, be equipped with fixed ring pull ring (39) on drive pull ring (31) of bending through fixed ring (31) block lock round ring (39) of fixing the stretch-draw rope (39), the end portion (40) of bending is equipped with the drive rope lock ring (31) of bending (31), the drive rope (31) of bending is equipped with the drive rope lock ring (39) of bending, the end portion (31) of bending (31) of stretching and is fixed rope (31) and is equipped with the drive rope (31) of bending .
4. The device for testing the bending performance of the computer curved screen according to claim 3, characterized in that: the circular bending limit adjusting mechanism is characterized in that the circumference 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 table (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 table (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 table (42) are unequal, the connecting rod driving shaft (34) is clamped in one group of the eccentric circular holes (41), connecting rod end portion holes (43) are symmetrically formed in 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 portion holes (43), and the sliding block driving rod (35) is arranged on another group of the rotating shafts (38) through the connecting rod end portion holes (43).
5. The device for testing the bending performance of the computer curved screen according to claim 4, characterized in that: 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).
6. The device for testing the bending performance of the computer curved screen according to claim 5, wherein: protection formula base subassembly (4) are including square base (49), module bottom plate (50), transparent protection casing (51), pixel detection module (52) and operating panel (53), be equipped with base round hole (54) on square base (49), the lower part block of center fixation cylinder (21) is located in base round hole (54), module bottom plate (50) are located on square base (49), ball screw module (44) are located on module bottom plate (50), transparent protection casing (51) are located on square base (49), spring mounting base plate (13) block is located in the inner wall of transparent protection casing (51), crooked frame mount (16) block is located on the inner wall of transparent protection casing (51), pixel detection module (52) are located on square base (49), flexible curved surface screen (17) and pixel detection module (52) are through detecting data line (23) communication connection, pixel detection module (52) and operating panel (53) communication connection.
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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 |
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| 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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| 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 |
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