Pressing device for LCD liquid crystal screen production

Abstract

The utility model discloses a hold-down device for LCD (liquid crystal display) production, which belongs to the technical field of LCD production and comprises a hold-down device body, the hold-down device body comprises a worktable and a pressing component, the pressing component is positioned above the worktable, a groove is formed in the top wall of the worktable, a platform is fixedly mounted in the middle of the groove, and the platform is positioned above the worktable. A long sliding groove and a short sliding groove are formed in the two opposite side walls of the groove correspondingly, a first moving rod is slidably connected into the long sliding groove, a second moving rod is slidably connected into the short sliding groove, blocking assemblies are installed on the top wall of the first moving rod and the top wall of the second moving rod correspondingly, and the two cavities communicate with the long sliding groove and the short sliding groove correspondingly. A control mechanism is arranged in a cavity communicated with the long sliding groove. By arranging the first moving rod, the second moving rod and the blocking assembly in the pressing device, the base plate can be fixed to the current position in the whole pressing process, and accidental deflection of the base plate during pressing is effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid crystal screen production, and particularly relates to a pressing device for LCD screen production. Background Art

[0002] Liquid crystal display (LCD) is a type of flat panel display technology. The so-called LCD on the market mainly refers to active matrix thin film transistor liquid crystal display, the main structure is to press the liquid crystal between two glass substrates, these two glass substrates are TFT array glass and color filter;

[0003] However, in actual production, the pressing process does not simply press the two glass plates together, but presses the components including the backlight panel and PCB back panel together. The heights of these components are slightly different. Therefore, even if the substrate is placed stably in the specified position, some components will always be in contact first during the pressing process, which may cause the position of the substrate to deflect slightly and cause damage to the components.

[0004] Therefore, we propose a clamping device for LCD screen production to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that a substrate placed on a pressing table may deviate when being pressed, and proposes a pressing device for LCD liquid crystal screen production.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A clamping device for LCD screen production comprises a clamping device body, the clamping device body comprises a workbench and a pressing assembly, the pressing assembly is located above the workbench, the top wall of the workbench is provided with a groove, a platform is fixedly installed at the middle position of the groove, two opposite side walls of the groove are respectively provided with a long slide groove and a short slide groove, a first moving rod is slidably connected in the long slide groove, a second moving rod is slidably connected in the short slide groove, blocking assemblies are installed on the top walls of the first moving rod and the second moving rod, an end of the first moving rod away from the long slide groove abuts against an end of the second moving rod away from the short slide groove, two cavities are provided in the workbench, the two cavities are respectively connected with the long slide groove and the short slide groove, and a control mechanism is installed in the cavity connected with the long slide groove.

[0008] Preferably, the blocking assembly includes a telescopic rod and a baffle, one end of the telescopic rod is fixedly connected to the top wall of the first movement rod, and the other end is fixedly connected to the bottom wall of the baffle, and the longitudinal section of the baffle is "L"-shaped.

[0009] Preferably, the control mechanism includes a servo motor, a bidirectional screw and two motion blocks, the servo motor is installed in a cavity, one end of the bidirectional screw is fixedly connected to the output end of the servo motor, and the other end is rotatably connected to the side wall of the cavity, the two motion blocks are respectively threadedly connected to two opposite threaded segments of the bidirectional screw, and the two first motion rods respectively pass through long slide grooves and are fixedly connected to the side walls of the two motion blocks.

[0010] Preferably, a round rod is installed in the cavity connected to the short slide groove, two movable rings are movably sleeved on the round rod, and the two second movement rods pass through the short slide groove respectively and are fixedly connected to the side walls of the two movable rings.

[0011] Preferably, a metal rod is fixedly connected to one end of the first movement rod near the second movement rod, and a push groove is opened at one end of the second movement rod near the first movement rod. The opening of the push groove faces the metal rod, the length of the push groove is consistent with the length of the metal rod, and the width of the push groove is also consistent with the width of the metal rod. A magnetic sheet is fixedly installed on the inner wall of the push groove, and the metal rod is made of magnetic metal.

[0012] In summary, the technical effects and advantages of the utility model are as follows:

[0013] By arranging a servo motor, a bidirectional screw, two moving blocks, a first moving rod, a second moving rod, a telescopic rod and a baffle in the clamping device body, driving the servo motor can make the servo motor drive the first moving rod and the second moving rod to move toward the middle position at the same time, thereby fixing the substrate in the current position, solving the problem in the prior art that the substrate placed on the clamping table may be offset when being clamped, and due to the arrangement of the telescopic rod, when the pressing assembly is pressed down, the telescopic rod can also drive the baffle to synchronously descend in height, thereby allowing the clamping work to be carried out more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is a schematic diagram of the structural connection of the control mechanism in the utility model;

[0016] Figure 3 It is a partial structural schematic diagram of the round rod and the movable ring in the utility model;

[0017] Figure 4 It is a schematic diagram of the structural connection between the first movement rod and the second movement rod in the utility model.

[0018] In the figure: 1. workbench; 2. pressing assembly; 3. groove; 4. platform; 5. long slide; 6. short slide; 7. first moving rod; 8. second moving rod; 9. telescopic rod; 10. baffle; 11. servo motor; 12. bidirectional screw; 13. moving block; 14. round rod; 15. movable ring; 16. metal rod; 17. push groove; 18. magnetic sheet. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] like Figure 1 As shown, a clamping device for LCD screen production includes a clamping device body, which includes a workbench 1 and a pressing assembly 2. The pressing assembly 2 is located above the workbench 1. A groove 3 is provided on the top wall of the workbench 1. A platform 4 is fixedly installed in the middle of the groove 3. The height of the platform 4 is flush with the height of the workbench 1. Two opposite side walls of the groove 3 are respectively provided with a long slide groove 5 and a short slide groove 6.

[0021] As the names imply, the long chute 5 and the short chute 6 are longer than the short chute 6, but the center positions of the two are the same. The long chute 5 is slidably connected with the first moving rod 7, and the short chute 6 is slidably connected with the second moving rod 8. It can be seen from the drawings in the specification that the number of the first moving rod 7 and the number of the second moving rod 8 are both two. The top walls of the first moving rod 7 and the second moving rod 8 are both equipped with blocking components, which include a telescopic rod 9 and a baffle 10. One end of the telescopic rod 9 is fixedly connected to the top wall of the first moving rod 7, and the other end is fixedly connected to the bottom wall of the baffle 10. The longitudinal section of the baffle 10 is "L" shaped. One end of the baffle 10 is horizontally designed, and the other end is vertically designed. The vertical end is located on one side of the first moving rod 7. Therefore, when the baffle 10 is pressed down, the baffle 10 can be lowered without contacting the first moving rod 7.

[0022] Reference Figure 2There are two cavities in the workbench 1, which are connected to the long chute 5 and the short chute 6 respectively. A control mechanism is installed in the cavity connected to the long chute 5, and the control mechanism includes a servo motor 11, a bidirectional screw 12 and two motion blocks 13. The servo motor 11 is installed in the cavity. One end of the bidirectional screw 12 is fixedly connected to the output end of the servo motor 11, and the other end is rotatably connected to the side wall of the cavity. The two motion blocks 13 are respectively threadedly connected to the two opposite thread segments of the bidirectional screw 12, and the side walls of the motion blocks 13 are respectively against the side walls of the cavity. The motion blocks 13 are rectangular blocks, so they will be restricted by the side walls of the cavity, ensuring that the motion blocks 13 will only move along the direction of the bidirectional screw 12, rather than rotating with the bidirectional screw 12. The two first motion rods 7 pass through the long chute 5 and are fixedly connected to the side walls of the two motion blocks 13.

[0023] Reference Figure 3 A round rod 14 is installed in the cavity connected to the short slide groove 6, and two movable rings 15 are movably sleeved on the round rod 14. The side walls of the two movable rings 15 slide in the side walls of the cavity respectively. The cavity can limit the movement direction of the movable rings 15. The two second movement rods 8 pass through the short slide groove 6 respectively and are fixedly connected to the side walls of the two movable rings 15.

[0024] Reference Figure 4 The end of the first moving rod 7 away from the long slide groove 5 is against the end of the second moving rod 8 away from the short slide groove 6. The end of the first moving rod 7 close to the second moving rod 8 is fixedly connected with a metal rod 16. The end of the second moving rod 8 close to the first moving rod 7 is provided with a push groove 17. The opening of the push groove 17 faces the metal rod 16. When the first moving rod 7 moves toward the second moving rod 8, the metal rod 16 can smoothly enter the push groove 17 and push the second moving rod 8 forward together. The length of the push groove 17 is consistent with the length of the metal rod 16, and the width of the push groove 17 is also consistent with the width of the metal rod 16. A magnetic sheet 18 is fixedly installed on the inner wall of the push groove 17. The metal rod 16 is made of magnetic metal.

[0025] The working principle is as follows: when the substrate is placed on the platform 4, the servo motor 11 is started to rotate the bidirectional screw 12, so that the two moving blocks 13 move toward the middle position, and the moving block 13 drives the first moving rod 7 to move together. When the metal rod 16 at the end of the first moving rod 7 enters the pushing groove 17 of the side wall of the second moving rod 8, the metal rod 16 is attracted by the magnetic sheet 18. At this time, the first moving rod 7 will be fixed together with the second moving rod 8, and the first moving rod 7 will move toward the middle position together with the second moving rod 8, and then the baffle 10 will be pressed against the side walls of the substrate, and then the pressing component 2 can be pressed. When pressed down, under the action of the telescopic rod 9, the baffle 10 will also be pressed down by the pressing component 2, which will not affect the effect of the pressing component 2 on the substrate. After the pressing work is completed, the servo motor 11 is driven in the reverse direction, and the bidirectional screw 12 will drive the first moving rod 7 and the second moving rod 8 to move toward the two ends of the long slide groove 5. Since the short slide groove 6 where the second moving rod 8 is located is shorter, when the second moving rod 8 moves to the end of the short slide groove 6, the second moving rod 8 will stop, and the first moving rod 7 will drive the metal rod 16 to disengage from the pushing groove 17. Since the restriction of the two baffles 10 is lost, it is more convenient for the staff to take out the compressed substrate.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pressing device for LCD screen production, comprising a pressing device body, wherein the pressing device body comprises a workbench (1) and a pressing component (2), wherein the pressing component (2) is located above the workbench (1), and is characterized in that: The top wall of the workbench (1) is provided with a groove (3), a platform (4) is fixedly installed in the middle position of the groove (3), and two opposite side walls of the groove (3) are respectively provided with a long slide groove (5) and a short slide groove (6), a first movement rod (7) is slidably connected in the long slide groove (5), and a second movement rod (8) is slidably connected in the short slide groove (6), and blocking components are installed on the top walls of the first movement rod (7) and the second movement rod (8), and the end of the first movement rod (7) away from the long slide groove (5) is abutted against the end of the second movement rod (8) away from the short slide groove (6), and two cavities are provided in the workbench (1), and the two cavities are respectively connected with the long slide groove (5) and the short slide groove (6), and a control mechanism is installed in the cavity connected with the long slide groove (5).

2. A pressing device for LCD screen production according to claim 1, characterized in that: The blocking assembly comprises a telescopic rod (9) and a baffle (10); one end of the telescopic rod (9) is fixedly connected to the top wall of the first movement rod (7), and the other end is fixedly connected to the bottom wall of the baffle (10); the longitudinal section of the baffle (10) is "L"-shaped.

3. A pressing device for LCD screen production according to claim 1, characterized in that: The control mechanism comprises a servo motor (11), a bidirectional screw (12) and two motion blocks (13); the servo motor (11) is arranged in a cavity; one end of the bidirectional screw (12) is fixedly connected to the output end of the servo motor (11), and the other end is rotatably connected to the side wall of the cavity; the two motion blocks (13) are respectively threadedly connected to two opposite threaded sections of the bidirectional screw (12); the two first motion rods (7) respectively pass through the long slide groove (5) and are fixedly connected to the side walls of the two motion blocks (13).

4. The pressing device for LCD screen production according to claim 1, characterized in that: A round rod (14) is installed in the cavity connected to the short slide groove (6), and two movable rings (15) are movably sleeved on the round rod (14). The two second movement rods (8) respectively pass through the short slide groove (6) and are fixedly connected to the side walls of the two movable rings (15).

5. The pressing device for LCD screen production according to claim 1, characterized in that: The first movement rod (7) is fixedly connected to one end of the second movement rod (8), and a push groove (17) is provided at one end of the second movement rod (8) close to the first movement rod (7). The opening of the push groove (17) faces the metal rod (16). The length of the push groove (17) is consistent with the length of the metal rod (16). The width of the push groove (17) is also consistent with the width of the metal rod (16). A magnetic sheet (18) is fixedly installed on the inner wall of the push groove (17). The metal rod (16) is made of magnetic metal.

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