Feeding device for AOI detection of LCM picture

Abstract

The utility model discloses a feeding device for LCM picture AOI detection, and belongs to the technical field of feeding devices. Comprising an upper base and a plurality of LCM screens, the top end of the upper base is slidably connected with a movable plate, the top end of the upper base is fixedly connected with a support, the movable plate is in threaded connection with a fastening bolt, the top end of the movable plate is fixedly connected with a first lifting rod, and the top end of the first lifting rod is fixedly connected with a material guide plate; according to the feeding device for AOI detection of the LCM picture, the mode that the rollers are used for feeding LCM screens through friction force is adopted, and extrusion damage to the screens in the pushing process of the push plate can be effectively avoided; through the arrangement of the measuring rod, the distance between the rolling wheel and the material guide plate can be accurately controlled, the situation that multiple rolling wheels are pushed out at the same time is avoided, and the stability of the feeding process is improved; and through the arrangement of an extension plate, a movable plate and a second lifting rod, the device can be suitable for various LCM screens with different sizes and AOI detection equipment with different heights.

Description

Technical Field

[0001] The present application relates to the technical field of feeding devices, and in particular to a feeding device for AOI detection of LCM images. Background Art

[0002] LCM (Liquid Crystal Module) is the abbreviation of liquid crystal module, which refers to the component of liquid crystal display screen. AOI (Automated Optical Inspection) is the abbreviation of automatic optical inspection, which is a method of using optical equipment and computer vision technology to detect and judge defects and errors in the manufacturing process. LCM screen AOI detection refers to the use of automatic optical inspection technology to detect the display screen of liquid crystal module (or liquid crystal display screen). Through optical equipment and computer vision technology, defects, errors or anomalies on the screen, such as dead spots, bright spots, missing lines, etc., can be automatically detected and identified. This detection method can improve production efficiency, reduce defects in the manufacturing process, and ensure that the quality of liquid crystal modules meets standard requirements.

[0003] China Patent Authorization Announcement No.: CN220055392U provides an automatic PCB board feeding device for AOI inspection equipment. The solution moves the feeding device to the AOI inspection equipment through a mobile base. At this time, the stacked PCB boards on the lifting table are pushed from top to bottom to the guide mechanism one by one through the pushing mechanism, and the PCB boards are sent to the AOI inspection equipment through the guide mechanism, thereby realizing automatic feeding of PCB boards for AOI inspection equipment, and the feeding device can be moved to other processing stations or inspection stations for self-loading by moving the mobile base, which has good flexibility in use.

[0004] The device in this solution is also applicable to LCM screens, but there are the following disadvantages during use. Different LCM screens may have different thicknesses. Although the guide plate in this solution can be adjusted in height, the distance between the guide plate and the push plate is still not easy to accurately control. In addition, since the LCM screen is thin, it is difficult to ensure that the push plate is aligned with the top screen through the lifting mechanism. Therefore, in the process of pushing the LCM screen, it is possible that two screens may be pushed out at the same time, and the push plate may even be between the two screens. While pushing the upper screen, it may squeeze the lower screen and damage it.

[0005] Therefore, it is necessary to provide a feeding device for LCM screen AOI detection to solve the above problems.

[0006] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Utility Model Content

[0007] Based on the above-mentioned problems existing in the prior art, the problem to be solved by the present application is: to provide a loading device for AOI detection of LCM screens. The loading device for AOI detection of LCM screens provided by the present application uses a roller to load the LCM screen through friction, which replaces the traditional method of using a push plate to push the screen from the side, and can effectively avoid the squeezing damage to the screen caused by the push plate during the pushing process; through the setting of the measuring rod, the distance between the roller and the guide plate can be accurately controlled, so as to ensure that only one LCM screen is allowed to pass through the guide plate at a time, avoiding the situation where multiple screens are pushed out at the same time, thereby improving the stability of the loading process; through the setting of the extension plate, the movable plate and the second lifting rod, the present device can be suitable for LCM screens of various sizes and AOI detection equipment of different heights, so that the present device has high flexibility and practicality.

[0008] The technical solution adopted by the present application to solve its technical problems is: a feeding device for LCM screen AOI detection, comprising an upper base and a plurality of LCM screens, the top end of the upper base is slidably connected with a movable plate, and the top end of the upper base is fixedly connected with a bracket, the movable plate is threadedly connected with a fastening bolt, and the top end of the movable plate is fixedly connected with a first lifting rod, the top end of the first lifting rod is fixedly connected with a guide plate, a first servo motor is installed at one end of the bracket, a lifting screw rod is fixedly connected to the output end of the first servo motor, the top end of the lifting screw rod is rotatably connected to the bracket, a feeding assembly and a stacking assembly are respectively provided on the side of the bracket close to the guide plate, the feeding assembly comprises a telescopic rod, the telescopic rod is fixedly connected to the bracket, and one end of the telescopic rod is fixedly connected to a mounting block, one end of the mounting block is rotatably connected to a roller, and one end of the mounting block is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a positioning column, and a measuring rod is slidably connected to the inner cavity of the positioning column.

[0009] Furthermore, the stacking assembly includes a stacking plate, which is slidably connected to the bracket, and one end of the stacking plate is fixedly connected to a first screw sleeve, which is installed on the outer end of the lifting screw rod, and one end of the stacking plate close to the guide plate is slidably connected to an extension plate.

[0010] Furthermore, a second servo motor is fixedly connected to the top of the mounting block, a pulley is fixedly connected to the output end of the second servo motor and the inner end of the roller, a belt strip is installed at the outer end of the pulley, and the pair of pulleys are connected through the belt strip transmission.

[0011] Further, the bottom end of the positioning post and the bottom end of the roller are at the same horizontal position. The top end of the positioning post is threadedly connected with an adjusting screw rod, the bottom end of the adjusting screw rod is rotatably connected with a measuring rod, scale lines are engraved on the outer surface of the measuring rod, one end of the material guiding plate is fixedly connected with a positioning block matching the measuring rod, and the positioning block and the top end of the material guiding plate are at the same horizontal position.

[0012] Further, the bottom end of the stacking plate is rotatably connected with a bidirectional lead screw, and a pair of symmetrically arranged retaining rods are slidably connected to the stacking plate. The bottom end of the retaining rod is fixedly connected with a second screw sleeve, and the second screw sleeve is installed at the outer end of the bidirectional lead screw.

[0013] Further, a lower base is arranged below the upper base, and a plurality of second lifting rods are fixedly connected between the upper base and the lower base. A plurality of universal wheels are fixedly connected to the bottom end of the lower base.

[0014] The beneficial effects of the present application are as follows: The feeding device for LCM screen AOI detection provided by the present application uses the method of feeding the LCM screen by the friction of the roller, replacing the method of pushing the screen from the side by the push plate in the traditional method, which can effectively avoid the extrusion damage to the screen during the pushing process of the push plate; through the setting of the measuring rod, the distance between the roller and the material guiding plate can be accurately controlled, so as to ensure that at most one LCM screen is allowed to pass through the material guiding plate at a time, avoiding the situation of multiple screens being pushed out simultaneously, and improving the stability of the feeding process; through the setting of the extension plate, the movable plate and the second lifting rods, the device can be applied to LCM screens of various different sizes and AOI detection devices of different heights, making the device have high flexibility and practicability.

[0015] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The following will refer to the drawings for a further detailed description of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specification drawings forming a part of the present application are used to provide a further understanding of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application.

[0017] In the drawings:

[0018] Figure 1 is the first overall schematic diagram;

[0019] Figure 2 is the second overall schematic diagram;

[0020] Figure 3 is the structural schematic diagram of the feeding assembly;

[0021] Figure 4 It is a structural schematic diagram of the stacking component;

[0022] Figure 5 for Figure 2 Schematic diagram of the structure at point A in the middle.

[0023] Among them, the reference numerals in the figure are:

[0024] 1. Upper base; 2. Bracket; 3. Movable plate; 4. First lifting rod; 5. Guide plate; 6. Loading assembly; 601. Telescopic rod; 602. Mounting block; 603. Roller; 604. Second servo motor; 605. Connecting rod; 606. Positioning column; 607. Adjusting screw; 608. Measuring rod; 7. Fastening bolt; 8. First servo motor; 9. Stacking assembly; 901. Stacking plate; 902. First screw sleeve; 903. Extension plate; 904. Stop rod; 905. Bidirectional screw; 906. Second screw sleeve; 10. Lifting screw; 11. LCM screen; 12. Second lifting rod; 13. Lower base; 14. Positioning block. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0027] like Figure 1-4As shown, the present application provides a feeding device for LCM screen AOI detection, including an upper base 1 and a plurality of LCM screens 11, the top of the upper base 1 is slidably connected with a movable plate 3, and the top of the upper base 1 is fixedly connected with a bracket 2, a fastening bolt 7 is threadedly connected to the movable plate 3, and the top of the movable plate 3 is fixedly connected with a first lifting rod 4, the top of the first lifting rod 4 is fixedly connected with a guide plate 5, a first servo motor 8 is installed at one end of the bracket 2, a lifting screw rod 10 is fixedly connected to the output end of the first servo motor 8, the top of the lifting screw rod 10 is rotatably connected to the bracket 2, a feeding assembly 6 and a stacking assembly 9 are respectively arranged on the side of the bracket 2 close to the guide plate 5, the feeding assembly 6 includes a telescopic rod 601, the telescopic rod 601 is fixedly connected to the bracket 2, and one end of the telescopic rod 601 is fixedly connected to a mounting block 6 02, one end of the mounting block 602 is rotatably connected to a roller 603, and one end of the mounting block 602 is fixedly connected to a connecting rod 605, one end of the connecting rod 605 is fixedly connected to a positioning column 606, and a measuring rod 608 is slidably connected to the inner cavity of the positioning column 606, and the stacking assembly 9 includes a stacking plate 901, the stacking plate 901 is slidably connected to the bracket 2, and one end of the stacking plate 901 is fixedly connected to a first screw sleeve 902, the first screw sleeve 902 is installed on the outer end of the lifting screw rod 10, and the end of the stacking plate 901 close to the guide plate 5 is slidably connected to an extension plate 903, the top of the mounting block 602 is fixedly connected to a second servo motor 604, the output end of the second servo motor 604 and the inner end of the roller 603 are both fixedly connected to a pulley, the outer end of the pulley is installed with a belt strip, and a pair of pulleys are connected through a belt strip transmission.

[0028] In this solution, the user can move the device to the side of the AOI inspection equipment, and start the first servo motor 8 to drive the lifting screw 10 to rotate. The rotation of the lifting screw 10 drives the stacking plate 901 to slowly rise, and then drives the stacked LCM screens 11 to rise. The number of rotations of the first servo motor 8 can be controlled to control the distance that the stacking plate 901 rises each time. The distance can be appropriately adjusted according to the thickness of each individual LCM screen 11. When the uppermost LCM screen 11 abuts against the bottom end of the roller 603, the user starts the second servo motor 604 to drive the pulley to rotate, and drives the roller 603 to transmit through the transmission connection between the belt strip and another pulley. The roller 603 is driven to transmit. The outer end of 03 is wrapped with rubber material, which can form a large friction force with the surface of the LCM screen 11, so that the uppermost LCM screen 11 is pushed out from the stack of LCM screens 11 through the rotation of the roller 603, and slides onto the guide plate 5, and then the LCM screen 11 slides along the guide plate 5 onto the AOI inspection equipment to achieve loading. The roller 603 loads the LCM screen 11 through friction, replacing the method of using a push plate to push the screen from the side in the comparative case, which can effectively avoid squeezing damage to the screen during the pushing process of the push plate, and the rubber material wrapped on the surface of the roller 603 is a flexible material, which can avoid scratching the surface of the LCM screen 11.

[0029] In this solution, considering that the thickness and size of different batches of LCM screens 11 may be different, the extension plate 903 at one end of the stacking plate 901 can slide, thereby adjusting the upper surface area of ​​the stacking plate 901 so that it can stably place LCM screens 11 of different sizes. By loosening the fastening bolts 7, the movable plate 3 can be slid to adjust the distance between the guide plate 5 and the bracket 2. This is also to adapt to LCM screens 11 of different sizes and avoid the bottom end of the guide plate 5 from hindering the rise of the LCM screen 11. By the first lifting The rod 4 can adjust the height of the guide plate 5, thereby adjusting the distance between the top of the guide plate 5 and the bottom of the roller 603. During use, this distance should be kept no more than the sum of the thicknesses of the two LCM screens 11, so as to ensure that at most only one LCM screen 11 can be pushed from the bottom of the roller 603 to the upper end of the guide plate 5 at a time, and the lower LCM screen 11 will be blocked by the guide plate 5, avoiding the situation where the two LCM screens 11 stick to each other and are pushed out at the same time.

[0030] like Figure 3-4As shown, the bottom end of the positioning column 606 and the bottom end of the roller 603 are at the same horizontal position, and the top end of the positioning column 606 is threadedly connected with an adjusting screw 607, the bottom end of the adjusting screw 607 is rotatably connected to a measuring rod 608, and the outer surface of the measuring rod 608 is engraved with scale lines, and one end of the guide plate 5 is fixedly connected with a positioning block 14 matching the measuring rod 608, and the positioning block 14 and the top end of the guide plate 5 are at the same horizontal position.

[0031] Since the LCM screen 11 is relatively thin, it may be difficult to accurately control the distance by adjusting the height of the guide plate 5 only by the first lifting rod 4. Therefore, the user can adjust the position of the mounting block 602 by the telescopic rod 601, so that the measuring rod 608 is directly above the positioning block 14, and then the adjusting screw 607 is rotated to move the adjusting screw 607 downward. The adjusting screw 607 will push the measuring rod 608 to slide downward. By observing the scale on the surface of the measuring rod 608, the distance between the bottom end of the measuring rod 608 and the bottom end of the positioning column 606 can be determined. The user keeps this distance constant. After it is greater than the sum of the thicknesses of the two LCM screens 11, the guide plate 5 is controlled to rise by the first lifting rod 4 until the top of the positioning block 14 abuts against the bottom of the measuring rod 608, and then the guide plate 5 is fixed. Since the bottom end of the positioning column 606 and the bottom end of the roller 603 are at the same horizontal position, and the top end of the positioning block 14 and the top end of the guide plate 5 are at the same horizontal position, the distance between the bottom end of the roller 603 and the top end of the guide plate 5 is equal to the scale displayed on the measuring rod 608. Therefore, the precise adjustment of the distance between the roller 603 and the guide plate 5 can be quickly achieved.

[0032] like Figure 5 As shown, the bottom end of the stacking plate 901 is rotatably connected to a bidirectional screw rod 905 , and a pair of mutually symmetrical blocking rods 904 are slidably connected to the stacking plate 901 , and the bottom end of the blocking rod 904 is fixedly connected to a second screw sleeve 906 , which is installed on the outer end of the bidirectional screw rod 905 .

[0033] In this solution, in order to prevent the LCM screen 11 from shifting to both sides and tipping over during the loading process, after placing the LCM screen 11, the user can turn the handle on one side of the bidirectional screw rod 905 to drive the bidirectional screw rod 905 to rotate, and drive a pair of second screw sleeves 906 to move synchronously in a direction close to each other through the bidirectional screw rod 905, and then drive the baffle rod 904 to slide on the upper base 1 through the second screw sleeve 906, so that the pair of baffle rods 904 come to both sides of the LCM screen 11, so as to prevent the LCM screen 11 from tipping over. It should be noted that a gap should be left between the baffle rod 904 and the LCM screen 11 to avoid direct contact. This is to avoid the baffle rod 904 from causing wear on the side of the LCM screen 11 during the upward movement of the LCM screen 11.

[0034] like Figure 1As shown, a lower base 13 is provided on the lower side of the upper base 1, and a plurality of second lifting rods 12 are fixedly connected between the upper base 1 and the lower base 13, and a plurality of universal wheels are fixedly connected to the bottom end of the lower base 13.

[0035] In this solution, the height of the entire device can be adjusted by multiple second lifting rods 12, so that the device is suitable for AOI inspection equipment of various heights. The multiple universal wheels at the bottom of the lower base 13 facilitate the movement of the entire device.

[0036] Working principle:

[0037] When in use, the user moves the device to the side of the AOI inspection equipment, and starts the first servo motor 8 to drive the lifting screw 10 to rotate. The rotation of the lifting screw 10 drives the stacking plate 901 to slowly rise, thereby driving the stacked LCM screens 11 to rise. When the top LCM screen 11 abuts against the bottom end of the roller 603, the user starts the second servo motor 604 to drive the pulley to rotate, and drives the roller 603 to transmit through the transmission connection between the belt strip and another pulley. The roller 603 can form a large friction force with the surface of the LCM screen 11, thereby pushing the top LCM screen 11 out of the stack of LCM screens 11 and making it slide onto the guide plate 5, thereby making the LCM screen 11 slide along the guide plate 5 to the AOI. I detection equipment, material loading is realized. When there are differences in thickness and size of LCM screens 11 of different batches, the user slides the extension plate 903 at one end of the stacking plate 901, thereby adjusting the upper surface area of ​​the stacking plate 901 so that it can stably place LCM screens 11 of different sizes. By loosening the fastening bolts 7, the movable plate 3 can be slid to adjust the distance between the guide plate 5 and the bracket 2. This is also to adapt to LCM screens 11 of different sizes and avoid the bottom end of the guide plate 5 from hindering the rise of the LCM screen 11. The user can adjust the position of the mounting block 602 through the telescopic rod 601 to make the measuring rod 608 come to the top of the positioning block 14, and then rotate the adjusting screw 607 to move the adjusting screw 607 downward. The adjusting screw 607 will push the measuring rod 608 to slide downward, and the measuring rod 608 can be determined by observing the scale on the surface of the measuring rod 608. The user keeps the distance that the bottom end of the measuring rod 608 passes over the bottom end of the positioning column 606 not greater than the sum of the thicknesses of the two LCM screens 11, and then controls the guide plate 5 to rise by the first lifting rod 4 until the top end of the positioning block 14 abuts against the bottom end of the measuring rod 608, and then fixes the guide plate 5. Since the bottom end of the positioning column 606 and the bottom end of the roller 603 are at the same horizontal position, and the top end of the positioning block 14 and the top end of the guide plate 5 are at the same horizontal position, the distance between the bottom end of the roller 603 and the top end of the guide plate 5 is equal to the scale displayed on the measuring rod 608, ensuring that at most only one LCM screen 11 can be pushed from the bottom end of the roller 603 to the upper end of the guide plate 5 at a time, and the lower LCM screen 11 will be blocked by the guide plate 5, avoiding the situation where the two LCM screens 11 stick to each other and are pushed out at the same time.

[0038] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A feeding device for LCM screen AOI detection, comprising an upper base (1) and a plurality of LCM screens (11), characterized in that: The top of the upper base (1) is slidably connected to a movable plate (3), and the top of the upper base (1) is fixedly connected to a bracket (2), a fastening bolt (7) is threadedly connected to the movable plate (3), and the top of the movable plate (3) is fixedly connected to a first lifting rod (4), and the top of the first lifting rod (4) is fixedly connected to a material guide plate (5), a first servo motor (8) is installed at one end of the bracket (2), and a lifting screw rod (10) is fixedly connected to the output end of the first servo motor (8), and the top of the lifting screw rod (10) is rotatably connected to the bracket (2), and a feeding assembly (6) and a stacking assembly (9) are respectively provided on the side of the bracket (2) close to the material guide plate (5); The loading assembly (6) comprises a telescopic rod (601), the telescopic rod (601) is fixedly connected to the bracket (2), one end of the telescopic rod (601) is fixedly connected to a mounting block (602), one end of the mounting block (602) is rotatably connected to a roller (603), one end of the mounting block (602) is fixedly connected to a connecting rod (605), one end of the connecting rod (605) is fixedly connected to a positioning column (606), and a measuring rod (608) is slidably connected to the inner cavity of the positioning column (606).

2. The feeding device for LCM screen AOI detection according to claim 1, characterized in that: The stacking assembly (9) comprises a stacking plate (901), the stacking plate (901) is slidably connected to the bracket (2), and one end of the stacking plate (901) is fixedly connected to a first screw sleeve (902), the first screw sleeve (902) is installed on the outer end of the lifting screw rod (10), and one end of the stacking plate (901) close to the guide plate (5) is slidably connected to an extension plate (903).

3. The feeding device for LCM screen AOI detection according to claim 1, characterized in that: A second servo motor (604) is fixedly connected to the top of the mounting block (602); a pulley is fixedly connected to the output end of the second servo motor (604) and the inner end of the roller (603); a belt strip is installed at the outer end of the pulley; and a pair of pulleys are connected through a belt strip transmission.

4. The feeding device for LCM screen AOI detection according to claim 1, characterized in that: The bottom end of the positioning column (606) and the bottom end of the roller (603) are at the same horizontal position, and the top end of the positioning column (606) is threadedly connected to an adjusting screw (607), the bottom end of the adjusting screw (607) is rotatably connected to a measuring rod (608), and the outer surface of the measuring rod (608) is engraved with scale lines, and one end of the guide plate (5) is fixedly connected to a positioning block (14) matching the measuring rod (608), and the positioning block (14) and the top end of the guide plate (5) are at the same horizontal position.

5. The feeding device for LCM screen AOI detection according to claim 2, characterized in that: The bottom end of the stacking plate (901) is rotatably connected to a bidirectional screw rod (905), and a pair of mutually symmetrical blocking rods (904) are slidably connected to the stacking plate (901). The bottom end of the blocking rod (904) is fixedly connected to a second screw sleeve (906), and the second screw sleeve (906) is installed on the outer end of the bidirectional screw rod (905).

6. The feeding device for LCM screen AOI detection according to claim 1, characterized in that: A lower base (13) is provided on the lower side of the upper base (1), and a plurality of second lifting rods (12) are fixedly connected between the upper base (1) and the lower base (13), and a plurality of universal wheels are fixedly connected to the bottom end of the lower base (13).

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