A degassing machine and degassing detection method for liquid crystal display screen

Abstract

The present invention relates to the technical field of degassing machines, and discloses a degassing machine and a degassing detection method for a liquid crystal display screen, comprising a degassing machine main body, one side of the degassing machine main body is provided with an outer cover, the interior of the degassing machine main body is provided with a hollow box, a lifting threaded rod, a rotating threaded rod, and a degassing main body rod, both sides of the middle part of the degassing machine main body are provided with lifting threaded rods, the top and bottom ends of the degassing machine main body are provided with lifting threaded rod accommodating grooves, the lifting threaded rods can be rotated in the accommodating grooves, and hollow boxes arranged equidistantly are provided between two of the lifting threaded rods, and both sides of the end of the hollow box away from the outer cover are fixedly connected with steering tubes, and the present invention rotates the hollow box while it continues to descend and is subjected to the rotational force provided by the semi-turbine until it maintains a horizontal state, and this design helps to evenly distribute bubbles in the liquid crystal display screen and make them more easily discharged.

Description

Technical Field

[0001] The present invention relates to the technical field of degassing machines, and more specifically to a degassing machine for a liquid crystal display screen and a degassing detection method. Background Art

[0002] The degassing machine for LCD screens is a device specially used to eliminate bubbles inside LCD screens. Its main working principle is to extract the bubbles inside the screen by means of vacuum pressure. That is, the LCD screen is placed in a vacuum chamber and sealed with a sealing gasket. The vacuum pump is turned on to extract the air in the vacuum chamber to form a certain vacuum state in the chamber. Under the vacuum state, the OCA glue (or other adhesive) is made fluid by heating and pressurizing, thereby helping the bubbles to merge with the adhesive or be squeezed out. The vacuum state is maintained within the set time to ensure that the bubbles are completely extracted. Finally, the vacuum pump is turned off and the cooling fan is turned on to dissipate the heat from the screen to avoid affecting the quality of the screen due to increased temperature.

[0003] In the prior art, the placement and taking of display screens are generally performed by operators, and the conventional lifting method is to place and lower the display screens one by one, or to place and raise the display screens one by one, which makes the operation complicated. Some display screens are fixed, and operators are required to bend over manually to install the display screens, which is bound to cause great cost waste and long operation time. Therefore, the present invention proposes a degassing machine and a degassing detection method for a liquid crystal display screen. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a degassing machine and a degassing detection method for a liquid crystal display screen to solve the problems existing in the above-mentioned background technology.

[0005] The present invention provides the following technical solutions: a degassing machine and a degassing detection method for a liquid crystal display screen, comprising a degassing machine main body, an outer cover is provided on one side of the degassing machine main body, a hollow box, a lifting threaded rod, a rotating threaded rod, and a degassing main body rod are provided inside the degassing machine main body, lifting threaded rods are installed on both sides of the middle part of the degassing machine main body, the degassing machine main body is provided with a lifting threaded rod receiving groove at the top and bottom ends of the lifting threaded rod, the lifting threaded rod can rotate in the receiving groove, hollow boxes arranged equidistantly are provided between two of the lifting threaded rods, steering tubes are fixedly connected to both sides of one end of the hollow box away from the outer cover, and the outer sides of the steering tubes are fixedly connected There is a semi-turbine, and the hollow box is provided with a support groove on one side of the steering tube, and a lifting rod is installed in the support groove of the hollow box. The outer wall of the lifting rod at one end away from the semi-turbine is fixedly sleeved with a bearing, and the outer wall of the bearing is fixedly sleeved with the inner wall of the support groove of the hollow box. A torsion spring is arranged between the two bearings on the lifting rod, one end of the torsion spring is fixedly connected to the lifting rod, and the other end of the torsion spring is fixedly connected to the steering tube, and the ends of the lifting rod away from each other and located on the outside of the semi-turbine are fixedly connected with a lifting sleeve, and the lifting sleeve is threadedly connected to the lifting threaded rod, and the lifting sleeve can move up and down when the lifting threaded rod rotates.

[0006] Furthermore, the rotating threaded rod is respectively provided on the rear sides of the half worm gears on both sides of the hollow box, and the bottom ends of the rotating threaded rods are fixedly connected to the second bevel gear, and the second transmission gear rod is installed between the two second bevel gears of the rotating threaded rod, and the middle part of the second transmission gear rod is fixedly connected to the second gear, and a moving rod is provided between the top and bottom ends of the two rotating threaded rods, and the two ends of the moving rod are movably connected to the top and bottom ends of the rotating threaded rod, and telescopic rods are provided on the two ends of the middle part of the moving rod on the side away from the hollow box, and the rod heads of the telescopic rods are fixedly connected to the moving rod, thereby pushing the moving rod to drive the entire rotating threaded rod and the second transmission gear rod to move forward and backward.

[0007] Furthermore, the bottom end of the lifting threaded rod is fixedly connected to the first bevel gear, a first transmission gear rod is installed between the two first bevel gears of the lifting threaded rod, the middle part of the first transmission gear rod is fixedly connected to the first gear, and the degassing machine body is located at the bottom end of the first gear and the second gear. A servo motor is provided, and the servo motor of the degassing machine body is transmission-connected to the first gear and the second gear.

[0008] Furthermore, the hollow box located at the bottom of the inner wall closest to the degassing machine body has support rods fixedly connected on both sides of one end close to the outer cover, the middle of the support rods is movably connected to a support frame, and the middle of the bottom end of the support frame is fixedly connected to a counterweight block.

[0009] Furthermore, the bottom and top ends of the degassing main rod are fixedly connected with sliding blocks, and the degassing main rod is provided with equidistantly arranged degassing nozzles on the side close to the hollow box, and the hollow box is provided with a degassing nozzle in the direction close to the degassing nozzle, and the degassing main rod is provided with a reciprocating screw on the side away from the hollow box, one end of the reciprocating screw of the degassing main rod is fixed to the inner wall of the degassing machine body and the other end is fixed to the side of the degassing main rod away from the hollow box, the reciprocating screw of the degassing main rod controls the forward and backward movement of the degassing main rod, that is, controls the degassing nozzle and the degassing nozzle to be movably connected, and the degassing main rod is connected to the negative pressure equipment to perform degassing operation in the hollow box, and the hollow box is used to place a liquid crystal display.

[0010] Furthermore, each of the torsion spring-controlled hollow boxes is inclined toward the top of the inner wall of the degassing machine body, and the half-turbines are provided with a turbine on half side.

[0011] A method for detecting degassing of a liquid crystal display screen, comprising the following contents:

[0012] S1. Place the liquid crystal display screen to be degassed by the degassing machine and the sample to be tested on the testing table to ensure that the surface of the sample is clean and free of dirt;

[0013] S2. First, use the naked eye to make a preliminary observation of the surface of the LCD screen to check whether there are obvious bubbles. Pay attention to the edges and corners of the screen to see if there are bubbles. If there are bubbles, record the number of unqualified products.

[0014] S3, collecting images of the LCD screen to be tested after preliminary selection;

[0015] S4. Import the collected images into image processing software or machine vision system. Use intelligent algorithms to process and analyze the images, identify and mark bubbles and scratches on the surface of the display screen, and evaluate the degassing effect of the display screen according to preset judgment criteria;

[0016] S5. Determine whether the display screen is qualified based on the results of image processing and analysis. If bubbles or other defects are detected that exceed the allowable range, the display screen is determined to be unqualified;

[0017] S6. Combine the results of visual inspection, optical inspection and machine vision inspection to comprehensively evaluate the degassing effect of the LCD display.

[0018] Technical effects and advantages of the present invention:

[0019] 1. In the present invention, the hollow box is rotated by the rotation force provided by the rotating threaded rod and the semi-turbine while continuously descending until it maintains a horizontal state. This design helps the bubbles to be evenly distributed in the liquid crystal display screen and to be discharged more easily.

[0020] 2. The present invention maintains an inclined state by the hollow box inside the device under the action of a torsion spring, so that the operator can easily put the LCD screen into the device without bending over, which greatly reduces the operating burden and the operating steps of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the internal overall structure of the present invention.

[0023] Figure 3 It is a schematic diagram of the tilting effect of the present invention.

[0024] Figure 4 It is a schematic diagram of the hollow box structure of the present invention.

[0025] Figure 5 It is a schematic diagram of the back structure of the hollow box of the present invention.

[0026] Figure 6 It is a schematic structural diagram of the bottom end portion of the lifting threaded rod of the present invention.

[0027] Figure 7 It is a schematic diagram of the overall structure of the bottom hollow box of the present invention.

[0028] Figure 8 It is a schematic diagram of the explosion of the overall structure of the bottom hollow box of the present invention.

[0029] Fig. 9 It is a schematic diagram of the degassing main rod structure of the present invention.

[0030] Fig.10 It is a schematic diagram of the back structure of the hollow box of the present invention.

[0031] The accompanying drawings are marked as follows: 1. degassing machine body; 101. outer cover; 2. hollow box; 201. steering tube; 202. semi-turbine; 203. lifting rod; 204. bearing; 205. torsion spring; 206. support rod; 2061. support frame; 2062. counterweight; 207. lifting sleeve; 208. degassing nozzle; 3. lifting threaded rod; 301. first bevel gear; 302. first transmission gear rod; 3021. first gear; 4. rotating threaded rod; 401. second bevel gear; 402. second transmission gear rod; 4021. second gear; 403. moving rod; 404. telescopic rod; 5. degassing main rod; 501. degassing nozzle. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The degassing machine and degassing detection method for a liquid crystal display screen involved in the present invention are not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0033] Reference Figure 1-Figure 10The present invention provides a degassing machine and a degassing detection method for a liquid crystal display screen, comprising a degassing machine body 1, one side of the degassing machine body 1 is provided with an outer cover 101, the interior of the degassing machine body 1 is provided with a hollow box 2, a lifting threaded rod 3, a rotating threaded rod 4, and a degassing main body rod 5, both sides of the middle part of the degassing machine body 1 are installed with lifting threaded rods 3, the top and bottom ends of the degassing machine body 1 are provided with accommodating grooves for the lifting threaded rod 3, the lifting threaded rod 3 can rotate in the accommodating grooves, and hollow boxes 2 arranged equidistantly are provided between two lifting threaded rods 3, both sides of the end of the hollow box 2 away from the outer cover 101 are fixedly connected with steering tubes 201, and the outer sides of the steering tubes 201 are fixedly connected with semi-turbines 202, the hollow box 2 is provided with a support groove on one side of the steering tube 201, and a lifting rod 203 is installed in the support groove of the hollow box 2. The outer wall of the lifting rod 203 away from the semi-turbine 202 is fixedly sleeved with a bearing 204, and the outer wall of the bearing 204 is fixedly sleeved with the inner wall of the support groove of the hollow box 2. A torsion spring 205 is arranged between the two bearings 204 on the lifting rod 203, one end of the torsion spring 205 is fixedly connected to the lifting rod 203, and the other end of the torsion spring 205 is fixedly connected to the steering tube 201. The ends of the lifting rod 203 away from each other and located on the outside of the semi-turbine 202 are fixedly connected with a lifting sleeve 207, and the lifting sleeve 207 is screwed with the lifting threaded rod 3 The lifting sleeve 207 is connected with a threaded connection, and the lifting sleeve 207 can move up and down when the lifting threaded rod 3 rotates. The rotating threaded rod 4 is respectively provided on the rear side of the half turbines 202 on both sides of the hollow box 2. The bottom end of the rotating threaded rod 4 is fixedly connected with a second bevel gear 401, and a second transmission gear rod 402 is installed between the two second bevel gears 401 of the rotating threaded rod 4. The middle part of the second transmission gear rod 402 is fixedly connected with a second gear 4021. A moving rod 403 is provided between the top and bottom ends of the two rotating threaded rods 4. Both ends of the moving rod 403 are movably connected with the top and bottom ends of the rotating threaded rod 4. Telescopic rods 404 are provided on the two ends of the middle part of the moving rod 403, which are located on a side away from the hollow box 2. The rod heads of the telescopic rods 404 are fixedly connected to the moving rods 403, thereby pushing the moving rods 403 to drive the entire rotating threaded rod 4 to move forward and backward. The bottom ends of the lifting threaded rods 3 are fixedly connected to the first bevel gear 301. The first transmission gear rod 302 is installed between the two first bevel gears 301 of the lifting threaded rods 3. The middle part of the first transmission gear rod 302 is fixedly connected to the first gear 3021. The degassing machine body 1 is provided with a servo motor at the bottom ends of the first gear 3021 and the second gear 4021. The servo motor of the degassing machine body 1 is transmission-connected to the first gear 3021 and the second gear 4021. The hollow box 2 located at the bottom end of the inner wall of the degassing machine body 1 is located.The end close to the outer cover 101 is fixedly connected with support rods 206 on both sides, the middle part of the support rod 206 is movably connected with a support frame 2061, the middle part of the bottom end of the support frame 2061 is fixedly connected with a counterweight block 2062, the bottom and top ends of the degassing main rod 5 are fixedly connected with sliding blocks, the degassing main rod 5 is provided with equidistantly arranged degassing nozzles 501 on the side close to the hollow box 2, the hollow box 2 is provided with a degassing nozzle 208 in the direction close to the degassing nozzle 501, the degassing main rod 5 is provided with a reciprocating screw on the side away from the hollow box 2, and one end of the reciprocating screw of the degassing main rod 5 is fixed on the degassing main rod 2. The other end of the inner wall of the machine body 1 is fixed to the side of the degassing main rod 5 away from the hollow box 2. The reciprocating screw of the degassing main rod 5 controls the forward and backward movement of the degassing main rod 5, that is, controls the degassing nozzle 501 to be movably connected with the degassing nozzle 208. The degassing main rod 5 is connected to the negative pressure equipment to perform degassing operation in the hollow box 2. The hollow box 2 is used to place a liquid crystal display screen. Each of the torsion springs 205 controls the hollow box 2 to tilt toward the top of the inner wall of the degassing machine body 1. The semi-turbine 202 has a turbine on one side. It should be noted that the structure introduced in the present invention is improved on the basis of the existing degassing machine.

[0034] A method for detecting degassing of a liquid crystal display screen, comprising the following contents:

[0035] S1. Place the liquid crystal display screen to be degassed by the degassing machine and the sample to be tested on the testing table to ensure that the surface of the sample is clean and free of dirt;

[0036] S2. First, use the naked eye to make a preliminary observation of the surface of the LCD screen to check whether there are obvious bubbles. Pay attention to the edges and corners of the screen to see if there are bubbles. If there are bubbles, record the number of unqualified products.

[0037] S3, collecting images of the LCD screen to be tested after preliminary selection;

[0038] S4. Import the collected images into image processing software or machine vision system, use intelligent algorithms to process and analyze the images, identify and mark defects such as bubbles and scratches on the surface of the display screen, and evaluate the degassing effect of the display screen according to preset judgment criteria;

[0039] S5. Determine whether the display screen is qualified based on the results of image processing and analysis. If bubbles or other defects are detected that exceed the allowable range, the display screen is determined to be unqualified;

[0040] S6. Combine the results of visual inspection, optical inspection and machine vision inspection to comprehensively evaluate the degassing effect of the LCD display.

[0041] Working principle of the present invention:

[0042] When in use, first open the outer cover 101 and put the LCD screen into the hollow box 2. When putting it in, since the hollow box 2 is in an inclined state under the action of the torsion spring 205, there is no need to bend down when using it, and the LCD screen can be directly put into the hollow box 2. After the LCD screen is put in, the outer cover 101 is closed, so as to open the control panel and control the hollow box 2 to perform the degassing operation. At this time, the control system controls the servo motor of the degassing machine body 1 to work. When working, it will first drive the first transmission gear rod 302 to rotate. Since the telescopic rod 404 is not working at this time, only the first transmission gear rod 302 rotates to drive the lifting threaded rod 3 to rotate, and the lifting sleeve 207 is controlled to descend. When the lifting sleeve 207 descends, when it descends to the specified height, the telescopic rod 404 starts to work to push the moving rod 403 out, so that the moving rod 4 03 drives the second transmission gear rod 402 and the rotating threaded rod 4 to move toward the direction of the hollow box 2 until the second gear 4021 is transmitted to the servo motor of the degassing machine body 1, thereby driving the second transmission gear rod 402 to rotate, and then driving the rotating threaded rod 4 to rotate. Due to the semi-turbine structure of the semi-turbine 202, the hollow box 2 is rotated by the rotating force provided by the rotating threaded rod 4 and the semi-turbine 202 while continuing to descend, until the counterweight block 2062 of the support rod 206 contacts the inner bottom end of the degassing machine body 1, and at this time the hollow box 2 remains horizontal, and the bottom end of the degassing machine body 1 is pressed by the counterweight block 2062. At this time, the reciprocating screw of the degassing main rod 5 is started, driving the degassing main rod 5 to move in the degassing machine body 1 until the degassing nozzle 501 is connected to the degassing nozzle 208, thereby performing degassing treatment on the hollow box 2. During the treatment, after the degassing is completed, a degassing detection is performed;

[0043] When the degassing operation is completed, it is necessary to take out the LCD screen. The reverse operation can be started to reverse the motor to make the hollow box 2 rise. When it rises to the specified height, the telescopic rod 404 will pull open the moving rod 403, so that the second gear 4021 releases the contact with the motor of the degassing machine body 1, so that the hollow box 2 returns to the inclined state, making it convenient for the operator to take out the display screen.

[0044] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A degassing machine for a liquid crystal display screen, comprising a degassing machine body (1), wherein one side of the degassing machine body (1) is provided with an outer cover (101), characterized in that: The degassing machine body (1) is provided with a hollow box (2), a lifting threaded rod (3), a rotating threaded rod (4), and a degassing main body rod (5) inside. The lifting threaded rod (3) is installed on both sides of the middle part of the degassing machine body (1). The lifting threaded rod (3) is provided with a receiving groove for the lifting threaded rod (3) at the top and bottom ends of the degassing machine body (1). The lifting threaded rod (3) can rotate in the receiving groove. A hollow box (2) arranged equidistantly is provided between two lifting threaded rods (3). Steering tubes (201) are fixedly connected to both sides of one end of the hollow box (2) away from the outer cover (101). The outer side of the steering tube (201) is fixedly connected to a half worm gear (202). A support groove is provided on one side of the hollow box (2) and a rotating threaded rod (4) is installed in the support groove of the hollow box (2). A lifting rod (203) is provided, the outer wall of one end of the lifting rod (203) away from the half worm gear (202) is fixedly sleeved with a bearing (204), the outer wall of the bearing (204) is fixedly sleeved with the inner wall of the support groove of the hollow box (2), a torsion spring (205) is provided between the two bearings (204) on the lifting rod (203), one end of the torsion spring (205) is fixedly connected to the lifting rod (203), and the other end of the torsion spring (205) is fixedly connected to the steering tube (201), and the ends of the lifting rod (203) away from each other and located outside the half worm gear (202) are fixedly connected with a lifting sleeve (207), the lifting sleeve (207) is threadedly connected to the lifting threaded rod (3), and the lifting sleeve (207) can move up and down when the lifting threaded rod (3) rotates; The rotating threaded rod (4) is provided at the rear side of each of the half worm wheels (202) on both sides of the hollow box (2); the bottom end of each rotating threaded rod (4) is fixedly connected to a second bevel gear (401); a second transmission gear rod (402) is installed between the two second bevel gears (401) of the rotating threaded rod (4); a second gear (4021) is fixedly connected to the middle of the second transmission gear rod (402); a moving rod (403) is provided between the top and bottom ends of the two rotating threaded rods (4); both ends of the moving rod (403) are movably engaged with the top and bottom ends of the rotating threaded rod (4); telescopic rods (404) are provided at both ends of the middle of the moving rod (403) on a side away from the hollow box (2); the rod heads of the telescopic rods (404) are fixedly connected to the moving rod (403), thereby pushing the moving rod (403) to drive the second transmission gear rod (402) of the entire rotating threaded rod (4) to move forward and backward.

2. A degassing machine for a liquid crystal display according to claim 1, characterized in that: The bottom ends of the lifting threaded rods (3) are fixedly connected to first bevel gears (301); a first transmission gear rod (302) is installed between the two first bevel gears (301) of the lifting threaded rods (3); a first gear (3021) is fixedly connected to the middle of the first transmission gear rod (302); a servo motor is provided at the bottom ends of the first gear (3021) and the second gear (4021) of the degassing machine body (1); and the servo motor of the degassing machine body (1) is transmission-connected to the first gear (3021) and the second gear (4021).

3. A degassing machine for a liquid crystal display screen according to claim 2, characterized in that: The hollow box (2) is located at the bottom end of the inner wall closest to the degassing machine body (1), and has support rods (206) fixedly connected to both sides of one end close to the outer cover (101); a support frame (2061) is movably connected to the middle of the support rod (206); and a counterweight (2062) is fixedly connected to the middle of the bottom end of the support frame (2061).

4. A degassing machine for a liquid crystal display screen according to claim 3, characterized in that: The bottom and top ends of the degassing main rod (5) are fixedly connected to sliding blocks; the degassing main rod (5) is provided with degassing nozzles (501) arranged at equal intervals on a side close to the hollow box (2); the hollow box (2) is provided with a degassing nozzle (208) in a direction close to the degassing nozzle (501); the degassing main rod (5) is provided with a reciprocating screw on a side away from the hollow box (2); one end of the reciprocating screw of the degassing main rod (5) is fixedly connected to the bottom end of the degassing main rod (5); The other end is fixed to the inner wall of the degassing machine body (1) and is fixed to the side of the degassing main rod (5) away from the hollow box (2). The reciprocating screw of the degassing main rod (5) controls the forward and backward movement of the degassing main rod (5), that is, controls the degassing nozzle (501) and the degassing nozzle (208) to be movably connected. The degassing main rod (5) is connected to the negative pressure device to perform the degassing operation in the hollow box (2). The hollow box (2) is used to place a liquid crystal display screen.

5. A degassing machine for a liquid crystal display screen according to claim 4, characterized in that: Each of the torsion springs (205) controls the hollow box (2) to tilt toward the top of the inner wall of the degassing machine body (1), and the half worm gears (202) are each provided with a worm gear on half of one side.

6. A method for detecting degassing of a liquid crystal display screen, implemented in a degassing machine for a liquid crystal display screen as claimed in claim 4, characterized in that: Includes the following: S1. Place the liquid crystal display screen degassed by the degassing machine as a sample to be tested on the testing table to ensure that the surface of the sample is clean and free of dirt; S2. First, use the naked eye to make a preliminary observation of the surface of the LCD screen to check whether there are obvious bubbles. Pay attention to the edges and corners of the screen to see if there are bubbles. If there are bubbles, record it as unqualified and further record the number of unqualified products. S3, collecting images of the LCD screen to be tested after preliminary selection; S4. Importing the collected images into image processing software or machine vision system, using intelligent algorithms to process and analyze the images, identifying and marking bubbles and scratches on the surface of the display screen, and evaluating the degassing effect of the display screen according to preset judgment criteria; S5. Determine whether the display screen is qualified based on the results of image processing and analysis. If bubbles or other defects are detected that exceed the allowable range, the display screen is determined to be unqualified; S6. Combine the results of visual inspection, optical inspection and machine vision inspection to conduct a comprehensive evaluation of the degassing effect of the LCD display.

Images