A continuous cleaning device for processing liquid crystal display screens

Abstract

The present invention relates to the technical field of display screen cleaning, and in particular to a continuous cleaning device for processing liquid crystal display screens, comprising a cleaning box with a columnar overall appearance, a rotating rod, a bracket and a conveyor belt; wherein the rotating rod is rotatably installed in the middle of the cleaning box and can form an equal-angle rotation; the bracket is provided in plurality and is equidistantly distributed on the side of the rotating rod; the conveyor belt is connected end to end and installed on the bracket, and the number of the conveyor belts corresponds to the number of the brackets; wherein a cleaning liquid for cleaning the display screen is injected into the cleaning box; through the arrangement of the rotating rod and the conveyor belt, the display screen can be transported to the cleaning liquid for cleaning, and the two surfaces of the display screen can be automatically brushed, and the display screen can be automatically drained after cleaning, thereby reducing the possibility of excessive liquid being brought out by the display screen and ensuring the drying of the display screen after cleaning.

Description

Technical Field

[0001] The invention relates to the technical field of display screen cleaning, and in particular to a continuous cleaning device for processing a liquid crystal display screen. Background Art

[0002] During the display screen production process, the substrate and other components need to be cut and polished in the early stage, and they will be cleaned at this time to ensure the cleanliness of the components and the quality of the product. Cleaning is an indispensable part of the display screen glass panel processing process, and it plays a vital role in ensuring the quality and performance of the product.

[0003] The following problems exist in the traditional display screen cleaning process:

[0004] 1. The display screen is placed on a support and placed in a cleaning tank for cleaning. Part of the display screen surface is blocked by the support, resulting in poor cleaning effect on the blocked part (for example, the part where the gripper is clamped and in contact with the display screen, or the display screen is laid flat on a conveyor belt and transported to the cleaning tank for cleaning, and the surface of the display screen is close to the conveyor belt);

[0005] 2. After the display screen is cleaned, its surface will carry a lot of cleaning liquid. On the one hand, the cleaning liquid is carried out with the display screen, which will cause a waste of cleaning liquid; on the other hand, the cleaning liquid carried by the display screen will affect the subsequent drying efficiency. Summary of the invention

[0006] The present invention provides a continuous cleaning device for processing a liquid crystal display screen, which can clean both surfaces of the display screen, improve the cleaning efficiency of the display screen, and further reduce the possibility of the cleaning liquid being carried out with the display screen. The specific scheme is as follows:

[0007] A continuous cleaning device for processing liquid crystal display screens, comprising a cleaning box with a columnar overall appearance, a rotating rod, a bracket and a conveyor belt; wherein the rotating rod is rotatably mounted in the middle of the cleaning box and can form equal-angle rotation; a plurality of brackets are provided and are equidistantly distributed on the side of the rotating rod; the conveyor belts are connected end to end and mounted on the brackets, and the number of the conveyor belts corresponds to the number of the brackets; wherein the cleaning box is injected with cleaning liquid for cleaning the display screen.

[0008] Furthermore, a feed port communicating with the interior of the cleaning box is provided through the side of the cleaning box; the feed port is located above the liquid surface of the cleaning liquid as a whole.

[0009] Furthermore, a discharge port communicating with the interior of the cleaning box is also provided through the side of the cleaning box; the discharge port is located above the feed port as a whole.

[0010] Furthermore, a plurality of support bars are evenly distributed on the surface of each conveyor belt; the support bars extend along the width direction of the conveyor belt and are flush with the edge ends of the conveyor belt.

[0011] Furthermore, a plurality of drainage pipes are connected to the middle of the bottom end of the cleaning box, and the plurality of drainage pipes are connected to each other through valve pipes.

[0012] Furthermore, a rubber sheet is installed between two adjacent brackets; the rubber sheet is arranged along the width direction of the bracket; and the rubber sheet is located as a whole below the conveyor belt.

[0013] Furthermore, the rubber is provided with a plurality of leakage holes, and the leakage holes are formed through the thickness of the rubber.

[0014] Furthermore, a servo motor is installed on the back of the cleaning box, and the output shaft of the servo motor is sleeved with the rotating rod.

[0015] Furthermore, a turntable is rotatably mounted in the middle of the front end of the cleaning box; one end of the rotating rod away from the servo motor is fixedly connected to the turntable; and a sealing gasket is provided at the junction of the turntable and the cleaning box.

[0016] Furthermore, the shafts of adjacent rotating rods of the plurality of conveyor belts are connected to each other via belts; a driving motor is also installed on the surface of one end of the turntable away from the rotating rod; the output shaft of the driving motor passes through the turntable and extends to the interior of the cleaning box, and the extended end is connected to the shaft of any conveyor belt.

[0017] Compared with the prior art, the present invention can achieve at least the following beneficial effects:

[0018] The device can transport the display screen into the cleaning liquid for cleaning through the setting of the rotating rod and the conveyor belt, and automatically form auxiliary brushing for the two sides of the display screen. At the same time, it automatically forms the draining of the display screen after cleaning, reducing the possibility of excessive liquid being brought out by the display screen, and ensuring that the display screen is dry after cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 For the present invention Figure 1 Schematic diagram from another perspective.

[0022] Figure 3 It is a schematic diagram of the structure inside the cleaning box of the present invention.

[0023] Figure 4 It is a schematic diagram of the axial side structure of the conveyor belt of the present invention.

[0024] Figure 5 This is a schematic diagram of the display screen of the present invention being located on a conveyor belt.

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the axial structure.

[0026] Figure 7 It is a schematic diagram of the structure of the display screen of the present invention being laid on a conveyor belt.

[0027] Figure 8 It is a schematic diagram of the state change of the rubber of the present invention.

[0028] Fig. 9 It is a schematic diagram of the structure of the belt described in the present invention.

[0029] The reference numerals are as follows:

[0030] 100. Cleaning box;

[0031] 200, rotating rod; 201, bracket; 202, conveyor belt; 203, feed port; 204, discharge port; 205, support bar; 206, rubber; 207, servo motor; 208, belt; 209, turntable; 210, drive motor. DETAILED DESCRIPTION

[0032] 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 the embodiments.

[0033] Please refer to Figure 1 and Figure 2 As shown, the present invention provides a continuous cleaning device for processing a liquid crystal display screen, including a cleaning box 100 having a columnar appearance. When processing a display screen that is difficult to clean, the cleaning box 100 may be a box body that can be ultrasonically cleaned. Ultrasonic cleaning is used to improve the cleaning efficiency of the display screen workpiece, which is a well-known technology and will not be described in detail.

[0034] The difference is that, Figure 3As shown, it also includes a rotating rod 200, a bracket 201 and a conveyor belt 202; wherein the rotating rod 200 is rotatably installed in the inner middle part of the cleaning box 100, and can form an equal angle counterclockwise rotation; a plurality of brackets 201 are provided, and the brackets 201 are equidistantly distributed on the side of the rotating rod 200; the conveyor belts 202 are connected end to end and installed on the brackets 201, and the number of the conveyor belts 202 corresponds to the brackets 201, and each conveyor belt 202 can form continuous conveyance on the brackets 201, and the conveyor belts 202 can be made of rubber material or a mesh material with a brush layer, so as to protect the contacted display screen and use it for subsequent brushing; wherein the cleaning box 100 is injected with a cleaning liquid for cleaning the display screen;

[0035] The display screen cleaning process specifically includes the following steps:

[0036] Loading: Figure 5 and Figure 6 As shown, the operator may open the top window (not shown) of the cleaning box 100 in advance, and place a single display screen to be cleaned between two adjacent conveyor belts 202 / supports 201 from the top of the cleaning box 100 in sequence (i.e., only one display screen is placed between two adjacent conveyor belts 202 / supports 201);

[0037] Cleaning: As Figure 5 and Figure 6 As shown, as the rotating rod 200 drives the conveyor belt 202 to rotate counterclockwise at equal angles, the display screen on the conveyor belt 202 can be brought below the liquid surface of the cleaning liquid, and the entire display screen is located in the space formed between the two conveyor belts 202 and the inner wall of the cleaning box 100; when the conveyor belt 202 is below the liquid surface and is in an inclined state, the entire display screen is laid on the conveyor belt 202 by gravity, and one end of the display screen is against the inner wall of the cleaning box 100, and the display screen below the liquid surface is cleaned by ultrasonic cleaning;

[0038] It is worth noting that in this application, in order to improve the cleaning quality and efficiency of the display screen, Figure 5 As shown, there are three stations X, Y and Z in a counterclockwise direction under the liquid level of the cleaning liquid; specifically, the station X on one side of the center line is the display screen front cleaning station; the station Y on the center line is the display screen face-changing station; the station Z on the other side of the center line is the display screen back cleaning station;

[0039] Front brushing (one side brushing): Figure 5 and Figure 7As shown, after the display screen is in the cleaning liquid (or at the X station), the rotating rod 200 stops after rotating at the same angle, and the conveyor belt 202 as a whole is in a continuous conveying state on the bracket 201 (the belt body of the conveyor belt 202 in contact with the display screen is always conveyed toward the inner wall of the cleaning box 100), and the conveyor belt 202 will continuously wipe the surface of the display screen in contact with it, and improve the cleaning effect of the display screen in the cleaning box 100 by giving the display screen additional scrubbing ability;

[0040] Display screen change: Figure 5 and Figure 6 As shown, as the rotating rod 200 drives the conveyor belt 202 to rotate counterclockwise at equal angles, when the display screen is located at the Y station, the display screen is tilted between the two conveyor belts 202 by gravity; then, the rotating rod 200 only needs to drive the conveyor belt 202 to continue rotating counterclockwise, and the display screen will be separated from the previously contacted conveyor belt 202 and contact the rear conveyor belt 202, thereby realizing the change of the display screen surface and preparing for the subsequent brushing of the other side of the display screen;

[0041] Reverse side brushing (brushing on the other side): Figure 5 and Figure 7 As shown, as the rotating rod 200 drives the conveyor belt 202 to rotate continuously at equal angles counterclockwise, the display screen after passing through the Y station will be completely laid on the conveyor belt 202 as the conveyor belt 202 tilts as a whole, and one end of the display screen is against the inner wall of the cleaning box 100 due to gravity. Similarly, at this time, the rotating rod 200 after equal angle rotation will not drive the conveyor belt 202 to rotate counterclockwise again, and the conveyor belt 202 as a whole will only form a circular conveyance on the bracket 201. Because the conveyor belt 202 has the function of continuous conveyance, the conveyor belt 202 will continuously wipe the surface of the display screen laid on it, thereby forming a brushing of the back of the display screen (or brushing of the other surface of the display screen);

[0042] Drain: Figure 5 As shown, as the rotating rod 200 continues to drive the conveyor belt 202 to rotate counterclockwise, the display screen after passing through the three stations X, Y and Z will be rotated to above the liquid surface of the cleaning liquid, and the display screen will slide to the angle between the two brackets 201 (or against the side of the rotating rod 200) by gravity, and at this time, an opportunity is formed for the liquid on the surface of the display screen to be separated and drained, thereby avoiding the possibility of excessive liquid being carried out by the display screen when it is moved out of the cleaning box 100, reducing the waste of cleaning liquid, and ensuring that the display screen is dry after cleaning;

[0043] Unloading: Similarly, the operator can open the top window (not shown) of the cleaning box 100 and take out the display screen (after cleaning) that is above the level of the cleaning liquid;

[0044] In summary, the display screen cleaning device of the present application can transport the display screen into the cleaning liquid for cleaning, and automatically scrub the two sides of the display screen, while automatically draining the display screen after cleaning, reducing the possibility of excessive liquid being brought out by the display screen, and ensuring that the display screen is dry after cleaning.

[0045] Reference Figure 5 and Figure 6 As shown, a feed port 203 communicating with the inside of the cleaning box 100 is provided through the side of the cleaning box 100, and each conveyor belt 202 rotates counterclockwise at an equal angle with the rotating rod 200, and there is a conveyor belt 202 located below one side of the feed port 203 and arranged horizontally; the feed port 203 is located above the liquid surface of the cleaning liquid as a whole;

[0046] During operation: a conveyor (such as a gripper or a horizontally arranged conveyor belt 208) can be set up externally to orderly feed a single display screen from the feed port 203 and place it between two conveyor belts 202 in the cleaning box 100. The display screen can be laid flat on a conveyor belt 202 located below the feed port 203 by gravity;

[0047] That is, the rotating rod 200 drives the conveyor belt 202 to rotate, and can cooperate with the feed port 203, so as to achieve the purpose of automatically delivering the display screen into the cleaning box 100 to form a continuous feeding.

[0048] Reference Figure 5 and Figure 6 As shown, a discharge port 204 communicating with the inside of the cleaning box 100 is also provided through the side of the cleaning box 100; the discharge port 204 is located above the feed port 203 as a whole;

[0049] During operation: after the display screen is cleaned and is above the liquid surface (or when the display screen is located directly above the Y station), as the rotating rod 200 drives the conveyor belt 202 to rotate counterclockwise, the display screen will separate from the conveyor belt 202 that was originally in contact with it, and fall on a conveyor belt 202 in the counterclockwise direction by gravity. Since the impurities on the conveyor belt 202 are soft, the display screen can be well protected, so that the display screen presents an inclined posture as a whole. In this process, the change in the posture of the display screen can also cause the liquid attached to itself to be shaken off, ensuring that it is dry.

[0050] At the same time, as the rotating rod 200 drives the conveyor belt 202 to continue to rotate counterclockwise, and the conveying direction of the conveyor belt 202 remains unchanged, the display screen will be completely laid on the surface of the conveyor belt 202, and the conveyor belt 202 will drive the display screen to move toward the inner wall of the cleaning box 100. When the display screen rotates with the rotating rod 200 / conveyor belt 202 to a position facing the discharge port 204, the conveying force formed by the conveyor belt 202 can move the display screen on its surface from the discharge port 204 to the outside of the cleaning box 100, and at this time, the removed display screen can be received by the external receiving belt;

[0051] That is, the rotating rod 200 drives the conveyor belt 202 to rotate, and can cooperate with the discharge port 204, so as to achieve the purpose of continuous and automatic discharge of the display screen after the cleaning in the cleaning box 100 is completed.

[0052] Reference Figure 5 and Figure 4 As shown, a plurality of support bars 205 are evenly distributed on the surface of each conveyor belt 202; the support bars 205 extend along the width direction of the conveyor belt 202 and are flush with the edge of the conveyor belt 202;

[0053] At the same time, the support bars 205 are made of rubber, and an impurity receiving area is formed between two adjacent support bars 205;

[0054] During operation: through the setting of the support strip 205, the display screen can only contact with the support strip 205 set on the surface of the conveyor belt 202, and the rubber strip made of rubber material can wipe and scrub the surface of the display screen in contact with it along with the transmission of the conveyor belt 202;

[0055] The difference is that an impurity accommodating interval is formed between two adjacent support bars 205, that is to say, if there are impurities in the cleaning liquid, there is a possibility that they are located between the display screen and the surface of the conveyor belt 202. If the impurities are located between the conveyor belt 202 and the display screen, the scrubbing of the display screen by the conveyor belt 202 will cause scratches on its surface; and the advantage of setting up the support bars 205 is that, on the one hand, if there are impurities in the cleaning liquid, since the contact area between a single support bar 205 and the display screen is small, it is difficult for the impurities in the cleaning liquid to be located between the support bar 205 and the display screen, thereby reducing the damage to the surface of the display screen caused by impurities during the scrubbing process; on the other hand, after the display screen is cleaned (or is located above the liquid level of the cleaning liquid), the movement of the conveyor belt 202 and the support bars 205 will wipe the surface of the display screen, thereby making it easier to scrape off water stains on the surface of the display screen, reducing the possibility of the cleaning liquid being carried out with the display screen, and facilitating the subsequent drying of the display screen.

[0056] Reference Figure 3 , Figure 5 and Figure 6 As shown, the middle part of the bottom end of the cleaning box 100 is connected with a plurality of drainage pipes (shown in the figure, but not numbered), and the plurality of drainage pipes are connected through valve pipes (shown in the figure, but not numbered);

[0057] During operation: through the arrangement of multiple drainage pipes, while not affecting the mobile cleaning of the display screen in the cleaning box 100, if there are impurities in the cleaning liquid in the cleaning box 100, some of the impurities can be settled by gravity and temporarily stored in the drainage pipes, reducing the possibility of impurities being located on the inner wall of the cleaning box 100 and contacting and scratching the display screen during the mobile cleaning process; the cleaning liquid can be discharged and replaced through the arrangement of the drainage pipe and valve pipe, and can also be connected to the water pump to pump the cleaning liquid that needs to be replaced out of the cleaning box 100.

[0058] Reference Figure 5 and Figure 8 As shown, a rubber sheet 206 is installed between two adjacent brackets 201. The rubber sheet 206 is made of elastic rubber material and can form an elastic support for the display screen in contact with it. The rubber sheet 206 is arranged along the width direction of the bracket 201. The rubber sheet 206 is located below the conveyor belt 202 as a whole.

[0059] During operation: when the display screen is above the level of the cleaning liquid (specifically, when it is located on the upper right side of the rotating rod 200), the conveying force generated by the conveyor belt 202 can continuously push the display screen toward the rotating rod 200. During the process, the display screen is continuously squeezed by the thrust of the conveyor belt 202 / support bar 205 to deform the rubber 206 in contact with the display screen. After the rubber 206 is deformed to the limit, a small reverse thrust (rebound force) is applied to the display screen. This is repeated to achieve a small reciprocating displacement (shaking) of the display screen on the conveyor belt 202, thereby accelerating the detachment of the liquid on the surface of the display screen and improving the drying effect of the display screen before it is removed from the cleaning box 100.

[0060] Reference Figure 5 As shown, a plurality of leakage holes (not shown in the figure) are provided on the rubber 206, and the leakage holes are formed through the thickness of the rubber 206;

[0061] During operation: after the conveyor belt 202 rotates the display screen above the liquid surface, the liquid falling off the display screen will flow downward onto the rubber 206. The leakage holes on the rubber 206 provide space for the liquid to pass through and escape from the rubber 206, thereby reducing the possibility of excessive liquid contacting the bottom of the display screen and being carried out.

[0062] Reference Figure 2 As shown, in order to realize the counterclockwise rotation of the rotating rod 200 / the conveyor belt 202, a servo motor 207 is installed on the back of the cleaning box 100, and the output shaft of the servo motor 207 is sleeved with the rotating rod 200;

[0063] During operation: the servo motor 207 is used to control the rotating rod 200 to rotate counterclockwise at equal angles. For example, in the present application, 10 groups of brackets 201 / conveyor belts 202 are provided, so the servo motor 207 can rotate counterclockwise at an angle of 36° each time; the above parameter settings are for reference only and are not specifically limited and can be adjusted according to actual needs.

[0064] Reference Figure 1 and Figure 3 As shown, a turntable 209 is rotatably mounted at the middle of the front end of the cleaning box 100; one end of the rotating rod 200 away from the servo motor 207 is fixedly connected to the turntable 209; a sealing gasket is provided at the junction of the turntable 209 and the cleaning box 100;

[0065] During operation: through the setting of the turntable 209, one end of the rotating rod 200 can be supported, and the turntable 209 can rotate with the rotating rod 200, so as to ensure the stability of the rotation of the turntable 209; at the same time, a sealing gasket is provided at the rotation junction of the turntable 209 and the cleaning box 100 to ensure that the turntable 209 rotates with the rotating rod 200 while avoiding the problem of leakage of cleaning liquid in the cleaning box 100.

[0066] Reference Figure 1 , Figure 3 and Fig. 9 As shown, in order to realize that the plurality of conveyor belts 202 can all form a rotating conveying and the conveying direction is consistent; for this purpose, the shafts of the plurality of conveyor belts 202 adjacent to the rotating rod 200 are respectively connected to each other by belts 208; a driving motor 210 is also installed on the surface of the end of the rotating disk 209 away from the rotating rod 200; the output shaft of the driving motor 210 passes through the rotating disk 209 and extends to the inside of the cleaning box 100, and the extended end is connected to the shaft of any conveyor belt 202 ( Fig. 9 The middle dotted line represents the output shaft of the drive motor 210);

[0067] During operation: When the display screen is cleaned, the drive motor 210 can be started to drive the conveyor belt 202 shaft connected to its output shaft to rotate; and the shafts of the remaining conveyor belts 202 are connected to the shafts of adjacent conveyor belts 202 through belts 208. Therefore, the rotation of the drive motor 210 can make the shafts of multiple conveyor belts 202 rotate in the same direction, that is, multiple conveyor belts 202 can form rotational transportation, and the transportation direction is consistent.

[0068] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A continuous cleaning device for processing a liquid crystal display screen, comprising a cleaning box (100) having an overall cylindrical appearance, characterized in that: Also includes, A rotating rod (200) is rotatably mounted in the middle of the cleaning box (100) and can rotate at equal angles; A plurality of brackets (201) are provided and are equidistantly distributed on the side of the rotating rod (200); Conveyor belts (202) are connected end to end and mounted on the bracket (201), and the number of conveyor belts corresponds to the number of brackets (201); Wherein, a cleaning liquid for cleaning the display screen is injected into the cleaning box (100); A feed inlet (203) communicating with the interior of the cleaning box (100) is provided through the side of the cleaning box (100); The feed inlet (203) is located entirely above the liquid surface of the cleaning liquid; The side of the cleaning box (100) is also provided with a discharge port (204) which is in communication with the interior thereof; The discharge port (204) is located above the feed port (203) as a whole; A plurality of support bars (205) are evenly distributed on the surface of each conveyor belt (202); The support bar (205) extends along the width direction of the conveyor belt (202) and is flush with the edge of the conveyor belt (202); A rubber sheet (206) is installed between two adjacent brackets (201); The rubber (206) is arranged along the width direction of the bracket (201); The rubber (206) is entirely located below the conveyor belt (202); The display screen is continuously squeezed by the thrust of the conveyor belt (202) / support bar (205) to deform the rubber (206) in contact with the display screen. After the rubber (206) is deformed to the limit, a slight reverse thrust is applied to the display screen.

2. The continuous cleaning device for processing a liquid crystal display panel according to claim 1, characterized in that: A plurality of drainage pipes are connected to the middle of the bottom end of the cleaning box (100), and the plurality of drainage pipes are connected to each other via valve pipes.

3. The continuous cleaning device for processing a liquid crystal display panel according to claim 1, characterized in that: The rubber (206) is provided with a plurality of leakage holes, and the leakage holes are formed through the thickness of the rubber (206).

4. The continuous cleaning device for processing a liquid crystal display panel according to claim 1, characterized in that: A servo motor (207) is installed on the back of the cleaning box (100), and the output shaft of the servo motor (207) is sleeved with the rotating rod (200).

5. The continuous cleaning device for processing a liquid crystal display panel according to claim 4, characterized in that: A rotating disk (209) is rotatably mounted in the middle of the front end of the cleaning box (100); One end of the rotating rod (200) away from the servo motor (207) is fixedly connected to the rotating disk (209); A sealing gasket is provided at the junction of the rotating disk (209) and the cleaning box (100).

6. The continuous cleaning device for processing a liquid crystal display panel according to claim 5, characterized in that: The shaft portions of the plurality of conveyor belts (202) adjacent to the rotating rods (200) are connected to each other via belts (208); A driving motor (210) is also mounted on the surface of one end of the rotating disk (209) away from the rotating rod (200); The output shaft of the driving motor (210) passes through the turntable (209) and extends to the interior of the cleaning box (100), and the extended end is connected to the shaft of any conveyor belt (202).

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