Compression resistance detection device for new material liquid crystal display screen

Abstract

The invention relates to the technical field of new material display screen detection, in particular to a compression resistance detection device for a new material liquid crystal display screen. Comprising a supporting base, a case, supports, a bottom plate, a pressure sensor and a longitudinal driving device arranged between the supports on the two sides, a bearing plate is arranged on the longitudinal driving device, a transverse driving device is arranged on the bearing plate, a vertical plate is arranged on the bearing plate in a sliding mode, and a path scanning mechanism is arranged on the vertical plate. The path scanning mechanism comprises an auxiliary plate and a positioning portion fixed to the auxiliary plate, the auxiliary plate is elastically connected with the vertical plate, and the pressure sensor is fixed to the auxiliary plate and located on the outer side of the positioning portion. The roller rolls along the contour of the display screen to dynamically adjust the detection point of the pressure sensor, so that the track of the pressure sensor corresponds to the contours of different types of display screens, the pressure resistance detection of different positions of the display screen is realized, and the detection speed and adaptability are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new material display screen detection, in particular to a pressure resistance detection device for new material liquid crystal display screen. BACKGROUND

[0002] The new material liquid crystal display screen is mainly composed of liquid crystal panel and backlight module and other core components. Its working principle is to stimulate liquid crystal molecules by electric current to form various points, lines and surfaces, and to cooperate with the back lamp to present a clear picture. In the production process of the liquid crystal display screen, pressure resistance detection is an indispensable key process. It mainly simulates the external pressure that the liquid crystal panel and its components may face in the production, transportation and use stages to test the reliability of the product structure and the stability of the performance.

[0003] There are many existing technologies for display screen pressure resistance detection, such as:

[0004] Chinese patent publication No. CN119124802A discloses a pressure resistance detection device for liquid crystal display screen production, belonging to the technical field of display screen production, comprising a multi-point detection assembly, a connecting cylinder is fixed at the bottom of the multi-point detection assembly, a lifting plug is inserted into the inner wall of the cavity of the connecting cylinder, and a synchronous cylinder is sleeved on the outer wall of the connecting cylinder.

[0005] Therefore, the combination of the stepped pipeline, the trigger plate, the driven plate and the splicing groove can arrange the silica gel cylinder in a ring shape outside the pressing point to reduce the influence on the adjacent pressing point, and can adsorb the silica gel cylinder on the liquid crystal screen by the negative pressure transmitted in the splicing groove to block the glass debris of the broken liquid crystal screen from splashing out, thereby improving the safety of the detection device.

[0006] During transportation or use, the front of the display screen will not only be subjected to external pressure, but also the side will be subjected to external pressure. In the existing technology, when detecting the side of the display screen, the detection device is usually moved horizontally to detect different points on the side of the display screen. When detecting curved display screens with different curvatures, although a driving mechanism perpendicular to the horizontal direction is added to detect the curved display screen, the driving mechanism in the horizontal direction and the vertical direction needs to be adjusted every time a detection point is moved, which reduces the detection speed and affects the detection. SUMMARY

[0007] The present application provides a pressure resistance detection device for new material liquid crystal display screen, which adjusts the detection points of the pressure sensor dynamically by rolling along the outline of the display screen with the help of rollers, thereby solving the problems raised in the background art, i.e.:

[0008] In order to achieve the above object, the pressure detection device of the new material liquid crystal display screen comprises a support seat, a case, a support, a bottom plate, a pressure sensor and a longitudinal driving device arranged between the two supports, a bearing plate is arranged on the longitudinal driving device, a transverse driving device is arranged on the bearing plate, a vertical plate is arranged on the bearing plate in a sliding mode, a path scanning mechanism is arranged on the vertical plate, the path scanning mechanism comprises an auxiliary plate and a positioning part fixed with the auxiliary plate, the auxiliary plate is elastically connected with the vertical plate, the pressure sensor is fixed with the auxiliary plate and located outside the positioning part, in the detection stage, the positioning part is attached to the back of the display screen, and the transverse driving device is used to drive the positioning part to roll along the back of the display screen, and the positioning part dynamically adjusts the detection point of the pressure sensor according to the profile of the display screen, so that the pressure sensor can detect the pressure resistance of different positions of the display screen.

[0009] Firstly, the positioning part comprises a roller and a track plate, the top of the track plate is fixedly connected with the auxiliary plate, and two protrusions are fixedly arranged on the bottom, wherein the lower protrusion is rotatably connected with the roller, and the transverse driving device provides power for the vertical plate during the pressure detection of the frame of the display screen, the upper and lower ends of the vertical plate are fixedly provided with sliding blocks, and the sliding blocks are slidably connected with the tracks on the bearing plate, so that the stability of the pressure sensor can be maintained when the pressure sensor is transversely displaced.

[0010] Then, the roller is driven to slide into the back of the display screen from the end of the display screen by the transverse driving device, and during the process, the roller is used to roll along the profile of the display screen and position the detection point of the pressure sensor, so that the moving path of the pressure sensor corresponds to the profile of the display screen, and thus the detection of different point positions of the frame of the display screen is realized.

[0011] When the device detects the flat screen, the roller directly rolls into the back of the flat screen, and then the transverse displacement of the pressure sensor is controlled by the transverse driving device, so that the multi-point detection of the flat screen is realized.

[0012] Compared with the prior art, the device has the following beneficial effects:

[0013] In the pressure detection device of the new material liquid crystal display screen, the roller is used to roll along the profile of the display screen, the detection point of the pressure sensor is dynamically adjusted, the track of the pressure sensor corresponds to the profile of different types of display screens, and thus the pressure resistance of different positions of the display screen is detected, and the detection speed and adaptability are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the application;

[0015] Figure 2 It is a schematic diagram of the longitudinal driving device structure of the application;

[0016] Figure 3 It is a schematic view of the transverse driving device structure of the present application.

[0017] Figure 4 It is a schematic view of the roller and track plate structure of the present application.

[0018] Figure 5 It is a schematic view of the display screen detection principle of the present application.

[0019] Figure 6 It is a schematic view of the roller moving principle structure of the present application.

[0020] The meanings of the respective reference numerals in the drawings are as follows:

[0021] 100, support seat; 101, case; 102, support; 103, bottom plate; 104, pressure sensor; 105, limiting plate;

[0022] 110, longitudinal driving device; 111, bearing plate;

[0023] 120, transverse driving device; 121, sliding block; 122, vertical plate;

[0024] 130, path scanning mechanism; 131, auxiliary plate; 132, stabilizing rod; 133, supporting spring; 134, roller; 135, track plate; 136, vertical rod;

[0025] 140, protection plate. DETAILED DESCRIPTION

[0026] The technical solutions in the present application will be described clearly and completely below in conjunction with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0027] In the transportation or use stage, the front of the display screen will not only be subjected to external pressure, but also the side of the display screen will be subjected to external pressure. In the prior art, when the side of the display screen is detected, the detection device is usually moved horizontally to detect different points of the side of the display screen. When a curved display screen with different curvatures needs to be detected, although a driving mechanism perpendicular to the horizontal direction is added to detect the curved display screen, the driving mechanism in the horizontal direction and the driving mechanism in the vertical direction need to be adjusted every time a detection point is moved, which reduces the detection speed and affects the detection.

[0028] Therefore, in view of the above-mentioned problems, the present application shows a kind of new material liquid crystal display screen's pressure detection device, refer to Figure 1 、 Figure 2As shown, including support seat 100, case 101, bracket 102, bottom plate 103, pressure sensor 104 and longitudinal driving device 110 arranged between the two side brackets 102, the longitudinal driving device 110 is provided with a bearing plate 111, the bracket 102 has a sliding rail connected with the bearing plate 111, during the detection of the display screen, first place the display screen vertically on the bottom plate 103, the bottom of the display screen is in contact with the bottom plate 103, the two sides are slid into the limiting plate 105, then the bottom of the display screen is fixed by the locking device (not shown in the figure), to prevent the inclination phenomenon in the later anti-pressure detection; After the display screen is fixed, the height of the pressure sensor 104 is adjusted by the longitudinal driving device 110, the bearing plate 111 slides on the sliding rail, and the pressure sensor 104 is adjusted to be close to the top frame of the display screen. Because the bearing plate 111 is fixedly provided with a transverse driving device 120, the transverse position of the pressure sensor 104 is adjusted by the transverse driving device 120, so that the pressure sensor 104 is located on one side of the display screen frame.

[0029] It should be understood that: the longitudinal driving device 110 and the transverse driving device 120 mentioned above are both realized by servo motor and screw rod to realize power transmission, that is, the pressure sensor 104 can move horizontally and vertically under the action of the longitudinal driving device 110 and the transverse driving device 120;

[0030] Secondly, in order to realize the horizontal and vertical displacement of the pressure sensor 104, based on Figure 2 , combined with Figure 3 , Figure 4 As shown, a vertical plate 122 is slidably arranged on the bearing plate 111, the vertical plate 122 is provided with a path scanning mechanism 130, the path scanning mechanism 130 includes an auxiliary plate 131 and a positioning portion fixed with the auxiliary plate 131, the auxiliary plate 131 is elastically connected with the vertical plate 122, the pressure sensor 104 is fixed with the auxiliary plate 131 and located outside the positioning portion, that is, the pressure sensor 104 and the auxiliary plate 131 are integrally moved, therefore, in the detection stage, the positioning portion is attached to the back of the display screen, and the transverse driving device 120 is used to drive the positioning portion to roll along the back of the display screen, the positioning portion adjusts the detection point of the pressure sensor 104 according to the profile of the display screen, so as to realize the anti-pressure detection of the pressure sensor 104 on different positions of the display screen side. The specific detection process is shown as follows:

[0031] First, the positioning unit includes a roller 134 and a track plate 135. The top of the track plate 135 is fixedly connected to the auxiliary plate 131, and two protrusions are fixed at the bottom. The lower protrusion is rotatably connected to the roller 134. During the pressure resistance test of the display screen frame, the horizontal drive device 120 provides power to the vertical plate 122. Slider 121 is fixed at both the upper and lower ends of the vertical plate 122. The slider 121 is slidably connected to the track on the support plate 111. This ensures the stability of the pressure sensor 104 when it moves laterally. Then, the horizontal drive device 120 drives the vertical plate 122 to move, causing the roller 134 to slide from the end of the display screen into the back of the display screen (see reference). Figure 5 As shown in the figure, during this process, the roller 134 is used to roll along the outline of the display screen and position the detection point of the pressure sensor 104 so that the moving path of the pressure sensor 104 corresponds to the outline of the display screen, thereby realizing the detection of different points on the edge of the display screen.

[0032] When the device detects a flat screen, the roller 134 can roll directly into the back of the flat screen, and the lateral displacement of the pressure sensor 104 is controlled by the lateral drive device 120 to achieve multi-point detection of the flat screen.

[0033] Furthermore, when the device detects the curved screen (i.e., the display screen described above), the pressure sensor 104 in the initial state is located on one side of the display screen, and a stabilizing rod 132 is symmetrically fixed to one side of the auxiliary plate 131, thus maintaining the stability of the auxiliary plate 131; the stabilizing rod 132 is slidably connected to the upright plate 122, and a support spring 133 is sleeved on the stabilizing rod 132 between the auxiliary plate 131 and the upright plate 122, with both ends of the support spring 133 fixed to the upright plate 122 and the auxiliary plate 131 respectively; in addition, under normal conditions, the support spring 133 is in a released state, and when the roller 134 is at the curved surface of the display screen, the support spring 133 is in a compressed state, and the support spring 133 applies pressure to the auxiliary plate 131 to make the roller 134 fit tightly against the back of the display screen; during operation:

[0034] The auxiliary plate 131 and the pressure sensor 104 move laterally as a whole, for reference. Figure 5 As shown, Figure 5 The image shows three position points: a1, a2, and a3. Point a1 is the sliding in point, a2 is the middle point, and a3 is the sliding out point. The scroll wheel 134 first slides into the back of the display screen from position a1. During the process of moving from a1 to a2, the vertical distance between point a1 and point a2 is d, that is, the displacement of the scroll wheel 134 during this stage is d.

[0035] Thus, combined Figure 6As shown, when the roller 134 moves from point a1 to point a2, since the display screen is in a fixed state, the stabilizing rod 132 slides with the upright plate 122. The stabilizing rod 132 is fitted with a support spring 133. At this time, as the roller 134 rolls, the direction of movement of the auxiliary plate 131 is shown by arrow F1. The auxiliary plate 131 applies pressure to the support spring 133, and the support spring 133 is compressed, increasing its elastic potential energy, so that the roller 134 is pressed tightly against the back of the display screen. The pressure sensor 104 is located at the detection point corresponding to the top edge of the display screen. That is, the detection points on the top edge of the display screen are all located on the moving path of the pressure sensor 104.

[0036] In addition, in order to improve the strength of the track plate 135, a vertical rod 136 is fixedly connected to the bottom of the auxiliary plate 131. The bottom of the vertical rod 136 is fixedly connected to the upper protrusion, and the upper protrusion is close to the lower protrusion. In this way, the overall strength of the track plate 135 can be increased by the vertical rod 136, and its bending resistance can be improved.

[0037] In summary, by using the roller 134 to roll along the outline of the display screen, the detection point of the pressure sensor 104 is dynamically adjusted so that the trajectory of the pressure sensor 104 corresponds to the outline of different types of display screens, thereby realizing pressure resistance detection at different positions of the display screen and improving detection speed and adaptability.

[0038] When detecting a certain point, the pressure sensor 104 is moved down by the auxiliary plate 131 to apply pressure to the top edge of the display screen. The pressure sensor 104 transmits the pressure to the display screen above it, and the display screen displays the pressure change in real time. Considering that the display screen surface may shatter when it is pressed, causing glass to splatter outward, an L-shaped plate is fixedly connected to the upright 136. There is a gap between the two L-shaped plates to accommodate the pressure sensor 104, and the L-shaped plates extend outward. A protective plate 140 is fixedly connected to the bottom to prevent broken glass. The protective plate 140 is located outside the display screen, and the area between the protective plate 140 and the display screen is a protective zone. According to the pressure applied by the pressure sensor 104, the protective plate 140 and the pressure sensor 104 move synchronously to expand the area of ​​the protective zone, improve the protective effect, and prevent glass from splattering outward.

[0039] It should be noted that a collection box can also be installed on one side of the display screen to collect broken glass and prevent it from splashing onto the table.

[0040] Next, when the roller 134 moves from point a2 to point a3, the vertical distance between the roller 134 and point a1 gradually decreases, that is, the compressed support spring 133 is gradually released. The direction of movement of the auxiliary plate 131 is shown by arrow F2 until the roller 134 disengages from point a3, thus completing the entire detection process.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure testing device for a novel material liquid crystal display screen, comprising a support base (100), a chassis (101), a bracket (102), a base plate (103), a pressure sensor (104), and a longitudinal drive device (110) disposed between two side brackets (102), wherein a bearing plate (111) is disposed on the longitudinal drive device (110), and a transverse drive device (120) is disposed on the bearing plate (111), characterized in that: A vertical plate (122) is slidably disposed on a support plate (111). A path scanning mechanism (130) is disposed on the vertical plate (122). The path scanning mechanism (130) includes an auxiliary plate (131) and a positioning part fixed to the auxiliary plate (131). The auxiliary plate (131) is elastically connected to the vertical plate (122). The pressure sensor (104) is fixed to the auxiliary plate (131) and located outside the positioning part. During the detection stage, the positioning part is attached to the back of the display screen. The horizontal driving device (120) is used to drive the positioning part to roll along the back of the display screen. The positioning part dynamically adjusts the detection point of the pressure sensor (104) according to the outline of the display screen so as to realize the pressure sensor (104) to perform pressure resistance detection on different positions on the side of the display screen.

2. The pressure resistance testing device for the new material liquid crystal display screen according to claim 1, characterized in that: The positioning part includes a roller (134) and a track plate (135). The top of the track plate (135) is fixedly connected to the auxiliary plate (131), and two protrusions are fixed at the bottom. The lower protrusion is rotatably connected to the roller (134). Slider (121) is fixed at both the upper and lower ends of the upright plate (122). The slider (121) is slidably connected to the track on the support plate (111).

3. The pressure resistance testing device for the new material liquid crystal display screen according to claim 2, characterized in that: The roller (134) is used to roll along the outline of the display screen and position the detection point of the pressure sensor (104) so ​​that the moving path of the pressure sensor (104) corresponds to the outline of the display screen, thereby realizing the detection of different points on the edge of the display screen.

4. The pressure resistance testing device for the new material liquid crystal display screen according to claim 2, characterized in that: A stabilizing rod (132) is symmetrically fixedly connected to one side of the auxiliary plate (131). The stabilizing rod (132) is slidably connected to the upright plate (122). A supporting spring (133) is sleeved on the stabilizing rod (132) between the auxiliary plate (131) and the upright plate (122). The two ends of the supporting spring (133) are fixed to the upright plate (122) and the auxiliary plate (131) respectively.

5. The pressure resistance testing device for the new material liquid crystal display screen according to claim 4, characterized in that: Under normal conditions, the support spring (133) is in the released state. When the roller (134) is at the curved surface of the display screen, the support spring (133) is in the compressed state. The support spring (133) applies pressure to the auxiliary plate (131) so that the roller (134) fits tightly against the back of the display screen.

6. The pressure resistance testing device for the new material liquid crystal display screen according to claim 2, characterized in that: A vertical rod (136) is fixedly connected to the bottom of the auxiliary plate (131). The bottom of the vertical rod (136) is fixedly connected to the upper protrusion, and the upper protrusion is close to the lower protrusion.

7. The pressure resistance testing device for the new material liquid crystal display screen according to claim 6, characterized in that: An L-shaped plate is fixedly connected to the upright (136), with a spacing between the two sides of the L-shaped plate to accommodate a pressure sensor (104), and the L-shaped plate extends outward, with a protective plate (140) fixedly connected to the bottom to prevent the glass from breaking.

8. The pressure resistance testing device for the new material liquid crystal display screen according to claim 7, characterized in that: The protective plate (140) is located outside the display screen, and the area between the protective plate (140) and the display screen is a protective zone. According to the pressure applied by the pressure sensor (104), the protective plate (140) and the pressure sensor (104) move synchronously to expand the area of ​​the protective zone.

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