Bearing and positioning device for liquid crystal display panel detection

Abstract

The utility model relates to the technical field of liquid crystal display panel production, in particular to a bearing and positioning device for liquid crystal display panel detection. Comprising a bottom plate, and two parallel placing plates are horizontally arranged above the bottom plate. The distance between the two L-shaped plates can be adjusted through the first displacement mechanism, so that the distance between the two blocking plates is matched with the length of the liquid crystal display panel and the length of the corresponding backlight plate, and the distance between the two sliding sleeves located on the same L-shaped plate can be adjusted through the second displacement mechanism. The distance between the two sliding sleeves located on the same L-shaped plate is matched with the width of the liquid crystal display panel and the width of the corresponding backlight plate, so that the device can bear and position the liquid crystal display panels of different sizes, meanwhile, when the device bears the liquid crystal display panels of different sizes, the center positions of the liquid crystal display panels cannot be changed, and therefore the liquid crystal display panels of different sizes can be supported. Operators can conveniently use optical detection equipment to detect the liquid crystal display panel.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid crystal display panel production technical field, concretely relates to a kind of liquid crystal display panel detection with receiving positioning device. BACKGROUND

[0002] With the continuous development of liquid crystal display panel industry, the quality requirement of liquid crystal display panel is higher and higher, so quality detection needs to be carried out on liquid crystal display panel in the manufacturing process of liquid crystal display panel.

[0003] The component parts of liquid crystal display panel can be divided into two categories of core display module and peripheral support structure, the core display module is composed of backlight plate, liquid crystal layer, polaroid, glass substrate and other components, wherein the backlight plate is an important part for lighting core display module, to meet the needs of factory modular production, core display module is usually composed of components except backlight plate in the production process to form display panel, and then display panel and backlight plate are assembled into complete core display module.

[0004] In the prior art, after the display panel is assembled, the operator needs to use optical detection equipment to carry out optical detection on the display panel, and after the core display module is assembled, the operator needs to use optical detection equipment again to carry out optical detection on the core display module, in order to track the quality problems that are prone to occur in different production processes of liquid crystal display panel. Optical detection usually includes brightness and brightness uniformity test, i.e. testing the brightness of the center point of the screen, which usually measures the brightness difference between the center of the screen and the edge image; view angle test, i.e. testing the brightness of the center point of the screen and the dark state brightness. The above optical detection contents need the operator to align the optical detection equipment to the middle position of the display panel.

[0005] When a plurality of display panels are batch detected, the position of the optical detection equipment remains unchanged, and the operator needs to place the plurality of display panels horizontally one by one under the optical detection equipment, and make the middle position of the display panel correspond to the optical detection equipment, in this process, the operator is difficult to accurately adjust the position of the display panel, so that the middle position corresponds to the optical detection equipment, and the optical detection equipment is prone to inaccurate detection results due to the incorrect placement position of the display panel, and the length and width dimensions of the display panel for different electronic devices are usually different, and the operator is more difficult to align the middle position of the display panel with the optical detection equipment when placing display panels of different sizes, and the optical detection equipment also needs to place the backlight panel under the display panel for lighting the display panel when detecting the display panel without the backlight panel, the backlight panel needs to be electrically connected with the external power supply through the wire, and the operator is prone to moving the position of the backlight panel together in the process of continuously replacing the display panel on the backlight panel, so that the position of the backlight panel changes, the operator will consume additional time in the process of adjusting the position of the backlight panel, so that the efficiency of the operator in detecting the display panel is reduced, and the backlight panel is prone to damage due to excessive pulling of the wire in the moving process, the transparent tape is usually used to bond and fix the position of the backlight panel in the prior art, however, the operator is prone to tearing off the parts on the backlight panel together when tearing off the transparent tape from the idle backlight panel, causing the backlight panel to be scrapped. Practical new type content

[0006] The utility model discloses a kind of liquid crystal display panel detection receiving positioning devices, to solve the problems raised in the above background art.

[0007] To achieve the above object, the utility model provides a kind of liquid crystal display panel detection receiving positioning device, including bottom plate, the upper side of the bottom plate is horizontally provided with two mutually parallel placement plates, the side of two mutually far away of the placement plate is fixed with baffle, the baffle and corresponding placement plate form L-shaped plate, first displacement mechanism for adjusting the spacing between two L-shaped plates is provided on the bottom plate, two sliding sleeves are slidably arranged on the L-shaped plate, second displacement mechanism for adjusting the spacing between two sliding sleeves located on the same L-shaped plate is provided on the bottom plate, limit mechanism is provided on the sliding sleeve, when the backlight panel is placed on the upper side wall of the placement plate, the limit mechanism blocks the upward movement of the backlight panel.

[0008] As a further improvement of the technical solution, the limit mechanism includes a rotating plate hinged to the side of the sliding sleeve away from the baffle, and an inner slot is formed in the position corresponding to the rotating plate on the sliding sleeve. When the rotating plate is rotated into the inner slot, the end of the rotating plate away from the hinge of the sliding sleeve is located above the placement plate.

[0009] As a further improvement of the technical solution, the limiting mechanism further comprises a vertical plug pin arranged above the rotating plate, two hole plates are slidably arranged on the plug pin, the hole plates are fixed on the side of the sliding sleeve away from the blocking plate, a convex ring is coaxially fixed on the plug pin between the two hole plates, a spring is arranged on the plug pin between the convex ring and the hole plate above, the spring pushes the convex ring close to the blocking plate, a plug hole is arranged on the blocking plate, and when the rotating plate rotates to the inside of the embedded groove, the lower end of the plug pin is inserted into the inside of the plug hole.

[0010] As a further improvement of the technical solution, the second displacement mechanism comprises a second threaded rod horizontally arranged on the upper side wall of the bottom plate, and two second nuts are threadedly connected to the second threaded rod.

[0011] As a further improvement of the technical solution, the second displacement mechanism further comprises an extension plate fixed horizontally on the upper side wall of the second nut, a sliding groove is arranged on the extension plate, and two sliding blocks are slidably arranged in the sliding groove.

[0012] As a further improvement of the technical solution, the first displacement mechanism comprises a first threaded rod horizontally arranged on the upper side wall of the bottom plate, two first nuts are threadedly connected to the first threaded rod, and the directions of the thread connection of the two first nuts and the first threaded rod are opposite.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] 1、The liquid crystal display panel detection supporting and positioning device, when supporting and positioning the liquid crystal display panel without installing the backlight plate, installs the backlight plate with the same length and width as the liquid crystal display panel on the device through the limiting mechanism, and when the operator continuously performs optical detection on several same liquid crystal display panels, only the liquid crystal display panel placed directly above the backlight plate needs to be replaced, the limiting mechanism prevents the operator from taking down the backlight plate from the device during the replacement of the liquid crystal display panel, avoids the operator from wasting time to adjust the position of the backlight plate, and further improves the detection efficiency of the operator in continuously detecting several liquid crystal display panels.

[0015] 2. The liquid crystal display panel detection receiving and positioning device, the interval between the two L-shaped plates can be adjusted through the first displacement mechanism, so that the interval between the two blocking plates is adapted to the length of the liquid crystal display panel and the corresponding backlight panel, the interval between the two sliding sleeves on the same L-shaped plate can be adjusted through the second displacement mechanism, so that the interval between the two sliding sleeves on the same L-shaped plate is adapted to the width of the liquid crystal display panel and the corresponding backlight panel, so that the device can receive and position liquid crystal display panels of different sizes, and when the device receives liquid crystal display panels of different sizes, the center position of the liquid crystal display panel does not change, which is convenient for the operator to use the optical detection equipment to detect the liquid crystal display panel. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of part of the structure of the utility model;

[0018] Figure 3 It is a schematic diagram of part of the structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the sliding sleeve and the limiting mechanism of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the sliding sleeve and the limiting mechanism of the utility model.

[0021] The meanings of the various reference numerals in the drawings are as follows:

[0022] 1. The bottom plate;

[0023] 2. The L-shaped plate; 21, the placing plate; 22, the blocking plate;

[0024] 3. The sliding sleeve; 31, the sliding block; 32, the embedded groove;

[0025] 4. The first displacement mechanism; 41, the first threaded rod; 42, the first nut;

[0026] 5. The second displacement mechanism; 51, the second threaded rod; 52, the second nut; 53, the extension plate; 531, the sliding groove;

[0027] 6. The limiting mechanism; 61, the rotating plate; 611, the insertion hole; 62, the hole plate; 63, the bolt; 64, the convex ring; 65, the spring. DETAILED DESCRIPTION

[0028] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0029] Embodiment 1

[0030] Please refer to Figure 1 The present embodiment aims to provide a liquid crystal display panel detection supporting and positioning device, which comprises a bottom plate 1, two mutually parallel placement plates 21 are arranged horizontally above the bottom plate 1, before the device supports the liquid crystal display panel without backlight plate, the operator first places the backlight plate with the same size as the liquid crystal display panel on the upper side wall of the two placement plates 21, so that the lower side wall of the backlight plate is in contact with the upper side wall of the two placement plates 21 at the positions close to the two sides, thereby placing the backlight plate horizontally on the device, the blocking plates 22 are fixed on the sides of the two placement plates 21 away from each other, the blocking plate 22 and the corresponding placement plate 21 form an L-shaped plate 2, and two sliding sleeves 3 are slidably arranged on the L-shaped plate 2, that is, an L-shaped groove adapted to the L-shaped plate 2 is formed in the sliding sleeve 3, the L-shaped plate 2 is slidably arranged in the L-shaped groove, and the four sliding sleeves 3 are distributed in a rectangular shape, when the two placement plates 21 support the backlight plate, the two blocking plates 22 are in contact with the opposite sides of the backlight plate, and the four sliding sleeves 3 are in contact with the other two sides of the backlight plate, the blocking plate 22 and the sliding sleeve 3 prevent the backlight plate from moving horizontally on the upper side wall of the placement plate 21, and a limiting mechanism 6 is arranged on the sliding sleeve 3, when the backlight plate is placed on the upper side wall of the placement plate 21, the limiting mechanism 6 blocks the upward movement of the backlight plate, thereby positioning the backlight plate at a predetermined position above the bottom plate 1, and then the operator places the liquid crystal display panel without backlight plate on the upper side wall of the backlight plate, since the size of the liquid crystal display panel is the same as that of the backlight plate, the blocking plate 22 and the sliding sleeve 3 also limit the horizontal movement of the liquid crystal display panel, thereby ensuring that the liquid crystal display panel without backlight plate can be stably engaged with the backlight plate, so that the light emitted by the backlight plate can completely illuminate the liquid crystal display panel, the optical detection equipment is convenient for the operator to use to detect the liquid crystal display panel, the liquid crystal display panel with quality problems is prevented from flowing out of the factory, and the quality of the liquid crystal display panel leaving the factory is ensured.

[0031] The device is used for positioning the liquid crystal display panel with the backlight panel. The operator directly places the liquid crystal display panel on the upper side wall of the placing plate 21, and limits the horizontal movement of the liquid crystal display panel through the blocking plate 22 and the sliding sleeve 3. The liquid crystal display panel can be lighted by the backlight panel, and the optical detection equipment can detect the liquid crystal display panel. In this process, the operator does not need to use the limiting mechanism 6.

[0032] The structure of the limiting mechanism 6 is detailed as follows, referring to Figure 4 and Figure 5 The limiting mechanism 6 includes a rotating plate 61 hinged to the side of the sliding sleeve 3 away from the blocking plate 22. The rotating plate 61 is made of transparent and colorless acrylic material, so as to avoid blocking the light emitted by the backlight panel. An embedded groove 32 is formed in the sliding sleeve 3 corresponding to the rotating plate 61. When the rotating plate 61 is rotated to the inside of the embedded groove 32, the embedded groove 32 blocks the vertical movement of the rotating plate 61. The end of the rotating plate 61 away from the hinge of the sliding sleeve 3 is located above the upper side wall of the placing plate 21. At this time, the distance between the lower side wall of the rotating plate 61 and the upper side wall of the placing plate 21 is adapted to the thickness of the backlight panel. The operator places the backlight panel on the upper side wall of the two placing plates 21, and then rotates the rotating plate 61 to the upper side of the placing plate 21. The lower side wall of the rotating plate 61 can be in contact with the upper side wall of the backlight panel, so as to limit the upward movement of the backlight panel. The operator places the liquid crystal display panel without the backlight panel above the backlight panel, so that the lower side wall of the liquid crystal display panel is in contact with the upper side wall of the rotating plate 61, and the periphery of the liquid crystal display panel is in contact with the two blocking plates 22 and the four sliding sleeves 3. The device can position the liquid crystal display panel. After the liquid crystal display panel is lighted by the light emitted by the backlight panel, the optical detection equipment can detect the liquid crystal display panel. When the operator continuously detects several same liquid crystal display panels, only the liquid crystal display panel placed above the backlight panel needs to be replaced. The limiting mechanism 6 prevents the operator from taking down the backlight panel from the device during the replacement of the liquid crystal display panel, so as to avoid wasting time to adjust the position of the backlight panel. In this way, the detection efficiency of the operator in continuously detecting several liquid crystal display panels is improved.

[0033] In order to keep the rotating plate 61 in contact with the backlight panel, the limiting mechanism 6 further includes a plug 63 vertically arranged above the rotating plate 61. Two hole plates 62 are slidably sleeved on the plug 63. The hole plates 62 are fixed to the side of the sliding sleeve 3 away from the blocking plate 22. A convex ring 64 is coaxially fixed on the plug 63 between the two hole plates 62. A spring 65 is arranged on the plug 63 between the convex ring 64 and the hole plate 62 above. The spring 65 pushes the convex ring 64 close to the blocking plate 22. A plug hole 611 is formed in the blocking plate 22. When the rotating plate 61 is rotated to the inside of the embedded groove 32, the lower end of the plug 63 is inserted into the inside of the plug hole 611.Figure 5 When the limiting mechanism 6 is not in use, the rotating plate 61 is located outside the embedded groove 32, and the lower end of the plug 63 is located in the rotating path of the rotating plate 61. The plug 63 blocks the rotating plate 61 from rotating into the embedded groove 32. Thus, when the device is used to support and position the liquid crystal display panel with the backlight panel, the rotating plate 61 does not interfere with the placement of the liquid crystal display panel.

[0034] When the operator pulls the plug 63 upward, the distance between the convex ring 64 and the hole plate 62 above is reduced, and the spring 65 is elastically contracted until the lower end of the plug 63 moves above the rotating plate 61. Then, the rotating plate 61 can be horizontally rotated into the embedded groove 32. Please refer to Figure 4 When the plug hole 611 is rotated directly below the plug 63, the rotating plate 61 is rotated to a position in contact with the upper side wall of the backlight panel. The operator releases the plug 63, and the rebounding spring 65 pushes the convex ring 64 and the plug 63 downward. Then, the plug 63 is inserted into the inside of the plug hole 611. The cooperation between the plug 63 and the plug hole 611 limits the rotation of the rotating plate 61. Thus, the rotating plate 61 is fixed at the position in contact with the upper side wall of the backlight panel, ensuring the stability of the backlight panel installed on the device.

[0035] The length and width dimensions of the liquid crystal display panel for different electronic devices are usually different, and the size of the backlight panel matched with the liquid crystal display panel is also different. For the liquid crystal display panel or the backlight panel whose length is not matched with the distance between the two blocking plates 22 or whose width is not matched with the distance between the two sliding sleeves 3 on the same L-shaped plate 2, the device cannot support and position it. To solve this problem, the first displacement mechanism 4 for adjusting the distance between the two L-shaped plates 2 is arranged on the bottom plate 1. The operator can adjust the distance between the two L-shaped plates 2 through the first displacement mechanism 4, and adjust the distance between the two blocking plates 22 to match the length of the liquid crystal display panel or the backlight panel. Meanwhile, the second displacement mechanism 5 for adjusting the distance between the two sliding sleeves 3 on the same L-shaped plate 2 is arranged on the bottom plate 1. The operator can adjust the distance between the two sliding sleeves 3 on the same L-shaped plate 2 through the second displacement mechanism 5, and adjust the distance between the two sliding sleeves 3 on the same L-shaped plate 2 to match the width of the liquid crystal display panel or the backlight panel. Thus, the device can support and position liquid crystal display panels or backlight panels of different sizes. When the device supports liquid crystal display panels or backlight panels of different sizes, the center position of the liquid crystal display panel or the backlight panel does not change, and the operator does not need to adjust the position of the optical detection equipment, which is convenient for the operator to use the optical detection equipment to detect liquid crystal display panels of different sizes.

[0036] The upper side walls of the blocking plate 22 and the extension plate 53 are both provided with scale grooves, the sliding sleeves 3 are in contact with the two sets of scale grooves, and the operator can conveniently adjust the distance between the two sliding sleeves 3 by reading the scale grooves on the blocking plate 22 at the edges of the sliding sleeves 3, and can conveniently adjust the distance between the two L-shaped plates 2 by reading the scale grooves on the extension plate 53 at the edges of the sliding sleeves 3, so that the device can accommodate and position liquid crystal display panels or backlight panels of different sizes.

[0037] The structure of the second displacement mechanism 5 will be further described below with reference to Figure 3 and Figure 4 The second displacement mechanism 5 includes a second threaded rod 51 horizontally rotatably arranged on the upper side wall of the base plate 1, a knob coaxially fixed at one end of the second threaded rod 51, which facilitates the operator to hold the knob and rotate the second threaded rod 51, and two second nuts 52 threadedly connected to the second threaded rod 51, the directions of the thread connection of the two second nuts 52 and the second threaded rod 51 being opposite, and the second displacement mechanism 5 further includes an extension plate 53 horizontally fixed on the upper side wall of the second nut 52, the extension plate 53 being arranged below the placement plate 21 and in contact with the lower side wall of the sliding sleeve 3, and a sliding groove 531 being formed in the extension plate 53, two sliding blocks 31 being slidably arranged in the sliding groove 531, and the two sliding blocks 31 being fixed to the lower side walls of the two sliding sleeves 3 on different L-shaped plates 2. When the operator rotates the second threaded rod 51 by the knob, the base plate 1 and the sliding sleeve 3 cooperate to prevent the extension plate 53 and the corresponding second nut 52 from rotating with the second threaded rod 51, and the thread connection of the second threaded rod 51 and the two second nuts 52 allows the two second nuts 52 to move relatively along the axial direction of the second threaded rod 51, the moving second nut 52 drives the corresponding extension plate 53 to move synchronously, the sliding groove 531 on the extension plate 53 drives the two sliding blocks 31 inside it to move synchronously, and the moving sliding block 31 drives the corresponding sliding sleeve 3 to move synchronously, so that the sliding sleeve 3 and the corresponding L-shaped plate 2 move relatively, thereby adjusting the distance between the two sliding sleeves 3 on the same L-shaped plate 2, and allowing the two sliding sleeves 3 to position liquid crystal display panels or backlight panels of different widths.

[0038] The structure of the first displacement mechanism 4 will be further described below with reference to Figure 2The first displacement mechanism 4 comprises a first threaded rod 41 horizontally and rotatably arranged on the sidewall of the bottom plate 1, the axis of the first threaded rod 41 is perpendicular to the axis of the second threaded rod 51, the first threaded rod 41 is arranged above the second threaded rod 51, and one end of the first threaded rod 41 is coaxially fixed with a knob for facilitating the rotation of the first threaded rod 41 by an operator, two first nuts 42 are threadedly connected to the first threaded rod 41, the directions in which the two first nuts 42 are threadedly connected to the first threaded rod 41 are opposite, and the middle positions of the lower sidewalls of the two placement plates 21 are fixedly arranged on the upper sidewalls of the two first nuts 42, respectively, when the operator rotates the first threaded rod 41 by holding the knob, the sliding sleeve 3, the L-shaped plate 2 and the first nut 42 rotate along with the first threaded rod 41 in cooperation with the sliding block 31 and the sliding groove 531, and then the two first nuts 42 move along the axis direction of the first threaded rod 41 in cooperation with the first threaded rod 41 through the threaded connection, the corresponding L-shaped plate 2 is driven to move by the moving first nut 42, the corresponding sliding sleeve 3 and sliding block 31 are driven to move by the L-shaped plate 2, and the sliding block 31 slides along the inner wall of the corresponding sliding groove 531, so as to adjust the distance between the two L-shaped plates 2, so that the two placement plates 21 can place liquid crystal display panels or backlight plates with different lengths, and the two blocking plates 22 can simultaneously contact the opposite sides of the liquid crystal display panels or backlight plates with different lengths, so as to support and position the liquid crystal display panels or backlight plates with different lengths.

[0039] When the device is used, the operator installs the bottom plate 1 horizontally on a detection table, adjusts the distance between the two L-shaped plates 2 according to the length of the liquid crystal display panel to be detected, so that the distance between the two blocking plates 22 is adapted to the length of the liquid crystal display panel, adjusts the distance between the two sliding sleeves 3 on the same L-shaped plate 2 according to the width of the liquid crystal display panel, so that the distance between the two sliding sleeves 3 on the same L-shaped plate 2 is adapted to the width of the liquid crystal display panel, and the adjustment of the device is completed.

[0040] When the operator detects the liquid crystal display panel without installing the backlight plate, the operator places the backlight plate with the same length and width as the liquid crystal display panel on the upper sidewalls of the two placement plates 21, so that the two blocking plates 22 contact the opposite sides of the backlight plate, respectively, and then the operator makes the four rotating plates 61 rotate to the positions close to the four corners on the upper sidewalls of the backlight plate, so that the rotating plates 61 block the upward movement of the backlight plate, and then the operator places the liquid crystal display panel above the backlight plate, so that the lower sidewall of the liquid crystal display panel contacts the rotating plates 61, the periphery of the liquid crystal display panel contacts the sliding sleeves 3 and the blocking plates 22, and the device supports and positions the liquid crystal display panel.

[0041] When the operator detects the liquid crystal display panel with the back light plate, the liquid crystal display panel is placed on the upper side wall of the two placing plates 21, the two blocking plates 22 are in contact with the opposite sides of the liquid crystal display panel respectively, and the four sliding sleeves 3 are in contact with the other two sides of the liquid crystal display panel respectively, so that the device can support and position the liquid crystal display panel.

[0042] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A kind of liquid crystal display panel detection with receiving positioning device, including bottom plate (1), it is characterized in that: The upper horizontal of the bottom plate (1) is provided with two parallel placing plates (21), the side of the two placing plates (21) away from each other is fixed with a blocking plate (22), the blocking plate (22) and the corresponding placing plate (21) form an L-shaped plate (2), the bottom plate (1) is provided with a first displacement mechanism (4) for adjusting the distance between the two L-shaped plates (2), the L-shaped plate (2) is sleeved with two sliding sleeves (3), the bottom plate (1) is provided with a second displacement mechanism (5) for adjusting the distance between the two sliding sleeves (3) on the same L-shaped plate (2), the sliding sleeve (3) is provided with a limiting mechanism (6), when the backlight plate is placed on the upper side wall of the placing plate (21), the limiting mechanism (6) blocks the upward movement of the backlight plate.

2. The receiving and positioning device for liquid crystal display panel detection according to claim 1, characterized in that: The limiting mechanism (6) comprises a rotating plate (61) hinged to the side of the sliding sleeve (3) away from the blocking plate (22), the sliding sleeve (3) is provided with an embedded groove (32) at a position corresponding to the rotating plate (61), when the rotating plate (61) is rotated into the embedded groove (32), the end of the rotating plate (61) away from the hinge of the sliding sleeve (3) is located above the placing plate (21).

3. The receiving and positioning device for liquid crystal display panel detection according to claim 2, characterized in that: The limiting mechanism (6) further comprises a plug (63) vertically arranged above the rotating plate (61), the plug (63) is sleeved with two hole plates (62), the hole plates (62) are fixed to the side of the sliding sleeve (3) away from the blocking plate (22), the plug (63) is coaxially fixed with a convex ring (64) at a position between the two hole plates (62), the convex ring (64) and the hole plate (62) above are provided with a spring (65) sleeved on the plug (63), the spring (65) pushes the convex ring (64) close to the blocking plate (22), the blocking plate (22) is provided with a plug hole (611), when the rotating plate (61) is rotated into the embedded groove (32), the lower end of the plug (63) is inserted into the plug hole (611).

4. The receiving and positioning device for detecting liquid crystal display panel according to claim 1, characterized in that: The second displacement mechanism (5) comprises a second threaded rod (51) horizontally arranged on the upper side wall of the bottom plate (1), the second threaded rod (51) is threadedly connected with two second nuts (52), the directions of the two second nuts (52) threadedly connected with the second threaded rod (51) are opposite.

5. The receiving and positioning device for detecting liquid crystal display panel according to claim 3, characterized in that: The second displacement mechanism (5) further comprises an extension plate (53) fixed horizontally on the upper side wall of the second nut (52), the extension plate (53) is provided with a sliding groove (531), the sliding groove (531) is slidably provided with two sliding blocks (31), the two sliding blocks (31) are respectively fixed on the lower side walls of the two sliding sleeves (3) on different L-shaped plates (2).

6. The receiving and positioning device for detecting liquid crystal display panel according to claim 1, characterized in that: The first displacement mechanism (4) comprises a first threaded rod (41) horizontally arranged on the upper side wall of the bottom plate (1), the first threaded rod (41) is threadedly connected with two first nuts (42), the directions of the two first nuts (42) threadedly connected with the first threaded rod (41) are opposite, the middle positions of the lower side walls of the two placing plates (21) are respectively fixed on the upper side walls of the two first nuts (42).

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