Internal ash discharging device based on micro liquid crystal display screen

Abstract

The invention discloses an internal ash discharging device based on a miniature liquid crystal display screen, which belongs to the technical field of liquid crystal display screen processing equipment and comprises a box body, a blowing mechanism and a clamping and collecting mechanism. According to the internal ash discharging device based on the micro liquid crystal display screen, the guide box, the convex block and the blowing mechanism are arranged, the draught fan is started to convey air into the hollow plate, and the air is blown to the display screen circuit board through the air outlet groove; meanwhile, a motor is started to drive a lead screw to rotate, a lead screw nut drives a hollow plate to move and cover a liquid crystal display screen circuit board, the hollow plate can synchronously drive an adjusting assembly to move when moving, a plurality of protruding blocks enable the adjusting assembly to move, then the hollow plate is driven to swing around the hinged position of the hollow plate and the lead screw nut, and the angle of an air outlet groove is dynamically changed; further, the blowing airflow direction of the air outlet groove is periodically changed to form a local vortex, so that dust on the circuit board of the liquid crystal display screen is more comprehensively cleaned.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of liquid crystal display screen processing equipment, and particularly relates to an internal dust removal device based on a micro liquid crystal display screen. BACKGROUND

[0002] The micro liquid crystal display screen has been widely applied to the fields of intelligent wearable devices, portable medical monitoring instruments, industrial micro control terminals and the like due to its small size, low power consumption and high display precision characteristics, and the market demand continues to grow with the intelligent trend of downstream applications. However, the internal space of the micro liquid crystal display screen is extremely compact, and the component integration degree is high. In long-term use, the environment is easy to enter the interior through the heat dissipation hole and the interface gap, and adhere to the surface of the circuit board and the gap between the components. Dust accumulation not only hinders the heat dissipation of the circuit board, causes local temperature rise and shortens the service life of the components, but also may cause signal transmission interference, and in severe cases, causes a circuit short circuit, directly leading to the failure of the micro liquid crystal display screen. Therefore, the internal dust removal technology becomes a key link to ensure the long-term stable operation.

[0003] At present, the existing internal dust removal device of the micro liquid crystal display screen still has the following deficiencies in actual application:

[0004] Firstly, the existing device is mostly fixed-angle blowing or single-direction moving blowing, and the airflow cannot penetrate the complex areas such as the edge corners of the circuit board, the gap between the component pins and the bottom of the chip, resulting in dust residue and insufficient thoroughness of dust removal.

[0005] Secondly, the existing device only removes dust by blowing, without timely collection, resulting in dust spreading and secondary adhesion to the backlight plate or the liquid crystal panel, causing secondary pollution. SUMMARY

[0006] The purpose of the present application is to provide an internal dust removal device based on a micro liquid crystal display screen, which solves the technical problem that the existing device is mostly fixed-angle blowing or single-direction moving blowing in the prior art, and the airflow cannot penetrate the complex areas such as the edge corners of the circuit board, the gap between the component pins and the bottom of the chip, resulting in dust residue and insufficient thoroughness of dust removal.

[0007] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0008] An internal dust discharging device based on micro liquid crystal display screen, comprising: a box body, a guide box is installed inside the box body, a plurality of protrusions are fixedly arranged on the inner side wall of the guide box along the length direction; a blowing mechanism is used for blowing the clamped liquid crystal display screen, comprising: a motor is installed on the box body, a screw rod is installed on the power output shaft of the motor, the screw rod is rotationally connected with the box body, a screw nut is arranged on the screw rod; a mounting box is hingedly connected with the screw nut, a fan is installed inside the mounting box; a hollow plate is fixedly connected with the mounting box, an air outlet groove is formed on the hollow plate and connected with the air outlet end of the fan; an adjusting assembly is used for driving the hollow plate to swing by contacting or separating with the protrusions; a clamping and collecting mechanism is used for clamping the liquid crystal display screen and collecting the dust blown by the blowing mechanism; when the screw nut drives the mounting box and the hollow plate to move, the adjusting assembly intermittently contacts with the plurality of protrusions in the guide box, so that the angle of the hollow plate relative to the screw nut continuously and dynamically changes.

[0009] Preferably, the adjusting assembly comprises: a connecting plate fixedly connected with the hollow plate; a guide plate located in the guide box and slidingly connected with the guide box, connected with the connecting plate through a plurality of springs; and a roller rotationally installed on the connecting plate.

[0010] Preferably, the clamping and collecting mechanism comprises: a fixed clamping plate box installed on the box body, being a cavity structure, the bottom of the fixed clamping plate box is semicircular; a dust suction groove is formed through the top surface of the fixed clamping plate box; two electric push rods are installed on the top surface of the fixed clamping plate box; a movable clamping plate is fixedly connected with the extension ends of the two electric push rods, used for clamping the liquid crystal display screen in cooperation with the fixed clamping plate box; and a filter plate is installed in the fixed clamping plate box.

[0011] Preferably, the clamping and collecting mechanism further comprises an air extraction assembly, the air extraction assembly comprises: a bend pipe installed on the box body, one end of the bend pipe is fixedly connected with the fixed clamping plate box and in communication; a plurality of self-resetting piston components are installed on the inner wall of the box body, each self-resetting piston component comprises a piston cylinder, an air extraction pipe, a gas conveying pipe, a reset spring and a push plate, the air extraction pipe is fixedly connected with the bend pipe and in communication; a rotating rod is rotationally connected with the box body, the rotating rod is connected with the screw rod through a transmission belt; a plurality of cams are installed on the rotating rod and respectively contact with the push plates of the plurality of self-resetting piston components; and an exhaust pipe is fixedly connected with the gas conveying pipes of the plurality of self-resetting piston components and in communication.

[0012] Preferably, the clamping and collecting mechanism further comprises a cleaning assembly, the cleaning assembly comprises: a horizontal rod rotationally connected with the fixed clamping plate box, one end of the horizontal rod extends out of the fixed clamping plate box; a spiral blade is fixedly connected with the horizontal rod and located in the fixed clamping plate box; and a fan blade is installed on one end of the horizontal rod located outside the fixed clamping plate box.

[0013] Preferably, a discharge slot is formed in the bottom surface of the fixed clamping plate box, and the air outlet pipe is provided with an air nozzle at one end close to the fan blade.

[0014] Preferably, the clamping and collecting mechanism further comprises a pressure sensor installed in the movable clamping plate and a display installed on the movable clamping plate for displaying the value detected by the pressure sensor.

[0015] Preferably, the blowing mechanism further comprises a fixed block installed on the screw nut and slidably connected with the sliding groove on the inner wall of the box.

[0016] As described above, the present application has the following advantages:

[0017] 1. The internal dust discharging device based on the micro liquid crystal display screen in the present application is provided with a guide box, a protruding block and a blowing mechanism, a fan is started to send air into the hollow plate, and the air is blown to the display screen circuit board through the air outlet slot; meanwhile, a motor is started to drive the screw to rotate, the screw nut drives the hollow plate to move to cover the liquid crystal display screen circuit board, the hollow plate moves synchronously to drive the adjusting assembly to move, the plurality of protruding blocks move the adjusting assembly, and then drive the hollow plate to swing around the hinge with the screw nut, so that the angle of the air outlet slot dynamically changes, the blowing air flow direction of the air outlet slot periodically changes, a local vortex is formed, and the dust on the liquid crystal display screen circuit board is more comprehensively cleaned.

[0018] 2. The air extraction assembly in the present application is provided with a bend pipe, a self-resetting piston component, a rotating rod, a cam, an air outlet pipe and a transmission belt, when the screw rotates, the rotating rod and the cam are driven to rotate through the transmission belt, the cam drives the push plate of the self-resetting piston component to reciprocate, the piston cylinder extracts air in the fixed clamping plate box through the air extraction pipe and the bend pipe, and then the fixed clamping plate box sucks away the dust falling due to blowing through the dust suction slot, so as to avoid the dust from being attached to the circuit board of the liquid crystal display screen again. The air extraction assembly shares the power of the motor of the blowing mechanism through the transmission belt, and does not need to be additionally provided with an air extraction motor, so as to reduce the energy consumption of the device.

[0019] 3. The cleaning assembly in the present application is provided with a horizontal rod, a spiral blade and a fan blade, when the piston cylinder of the self-resetting piston component sends air, the air is sent to the air nozzle through the air pipe and the air outlet pipe, the air flow discharged from the air nozzle drives the fan blade to rotate, and then drives the horizontal rod and the spiral blade to rotate, so as to push the filtered dust in the fixed clamping plate box to the discharge slot to be discharged, avoid the dust in the fixed clamping plate box from being accumulated and clogging the dust suction slot, and ensure the continuous and effective negative pressure dust collection; the cleaning assembly is provided, so that the dust can be automatically discharged without manual disassembly and cleaning of the dust collection cavity, and the maintenance frequency of the device is reduced.

[0020] 4. The internal dust discharging device based on the micro liquid crystal display screen in the application forms a power closed loop of blowing, air extraction and dust discharging through the setting of the motor, the lead screw, the air extraction assembly and the cleaning assembly, the transmission belt transmits the rotating force of the lead screw to the air extraction assembly, and the gas discharged from the self-resetting piston part in the air extraction assembly drives the cleaning assembly, the multiple mechanisms share a single power source and work synchronously and cooperatively, the driving parts are reduced, the energy consumption is saved, the internal space of the box is saved, and the miniaturization adaptation requirement of the micro display screen is met. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0022] Figure 1 It is a perspective view of the internal dust discharging device based on the micro liquid crystal display screen in the application.

[0023] Figure 2 It is an assembly structure schematic view of the box, the guide box, the hollow plate, the air extraction assembly and the cleaning assembly in the application.

[0024] Figure 3 It is an enlarged schematic view of A part of the application. Figure 2

[0025] Figure 4 It is a perspective view of the blowing mechanism in the application.

[0026] Figure 5 It is a perspective view of the adjusting assembly in the application.

[0027] Figure 6 It is an assembly structure schematic view of the fixed clamping plate box, the elbow, the self-resetting piston part and the exhaust pipe in the application.

[0028] Figure 7 It is an assembly structure schematic view of the fan blade, the fixed clamping plate box and the discharge chute in the application.

[0029] Figure 8 It is an assembly structure schematic view of the rotating rod, the cam and the self-resetting piston part in the application.

[0030] Figure 9 It is an internal structure schematic view of the fixed clamping plate box in the application.

[0031] ​100, box; 101, guide box; 102, protruding block; 110, blowing mechanism; 111, motor; 112, screw rod; 113, screw nut; 114, fixed block; 115, mounting box; 116, fan; 117, hollow plate; 118, air outlet groove; 119, adjusting assembly; 1191, connecting plate; 1192, guide plate; 1193, spring; 1194, roller; 200, clamping and collecting mechanism; 201, fixed clamping plate box; 202, dust suction groove; 203, electric push rod; 204, movable clamping plate; 205, display; 206, filter plate; 207, discharging groove; 210, air suction assembly; 211, elbow; 212, self-resetting piston component; 2121, piston cylinder; 2122, air suction pipe; 2123, air conveying pipe; 213, rotating rod; 214, cam; 215, air exhaust pipe; 216, transmission belt; 220, cleaning assembly; 221, cross rod; 222, helical blade; 223, fan blade; 224, protection box. DETAILED DESCRIPTION

[0032] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0033] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in other ways different from those described herein without departing from the scope of the present application, and those skilled in the art can make similar generalizations without departing from the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0034] Secondly, "one embodiment" or "an embodiment" referred to herein means that a specific feature, structure or characteristic can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or selected from other embodiments.

[0035] The present application is described in detail with reference to the accompanying drawings, and in the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the accompanying drawings are only examples, which should not limit the scope of protection of the present application. In addition, three-dimensional spatial dimensions including length, width and depth should be included in actual manufacture.

[0036] Meanwhile, in the description of the present application, it should be noted that the terms "first", "second" or "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] Unless otherwise explicitly defined and limited, the terms "mounting, connecting, linking" in the present application should be understood broadly, for example: it can be fixed connection, detachable connection or integral connection; it can also be mechanical connection, electrical connection or direct connection, it can also be indirectly connected through intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] Embodiment 1: as shown in a kind of internal ash discharging device based on micro liquid crystal display screen, including box 100, blowing mechanism 110 and clamping collection mechanism 200, the front of box 100 is open, box 100 is internally mounted with guide box 101, multiple lugs 102 are installed in guide box 101, lug 102 is semicylindrical. Clamping collection mechanism 200 is installed in box 100, and clamping collection mechanism 200 is used to clamp liquid crystal display screen. Figures 1-4 Blowing mechanism 110 is used to blow the clamped liquid crystal display screen, and blowing mechanism 110 includes motor 111, mounting box 115, hollow plate 117 and adjusting assembly 119. Motor 111 is installed on box 100, motor 111 power output shaft is installed with lead screw 112, lead screw 112 is rotatably connected with box 100, and lead screw nut 113 is arranged on lead screw 112;Mounting box 115 is hingedly connected with lead screw nut 113, and fan 116 is installed in mounting box 115;Hollow plate 117 is fixedly connected with mounting box 115, and air outlet groove 118 is formed in hollow plate 117, and hollow plate 117 is connected with the air outlet end of fan 116;Adjusting assembly 119 is used to adjust the angle of hollow plate 117.

[0039] Blowing mechanism 110 further includes fixed block 114, which is installed on lead screw nut 113, and fixed block 114 is slidably connected with the sliding groove on the inner wall of box 100. By setting fixed block 114 and sliding groove, lead screw nut 113 can only move vertically.

[0040] Specifically, when the liquid crystal display screen needs to be cleaned, the rear shell of the liquid crystal display screen is removed to expose the circuit board of the liquid crystal display screen, then the liquid crystal display screen is placed in the clamping collection mechanism 200, and the circuit board of the liquid crystal display screen faces the inside of the box 100, and then the clamping collection mechanism 200 is used to clamp and fix the liquid crystal display screen.

[0041]

[0042] ​Then, the air fan 116 is started to send air into the hollow plate 117, and the air is discharged from the air outlet groove 118 to blow the circuit board of the liquid crystal display screen, thereby cleaning the circuit board of the liquid crystal display screen.

[0043] Then, the motor 111 is started to drive the screw rod 112 to rotate, thereby driving the screw nut 113 to move. When the screw nut 113 moves, the installation box 115 and the hollow plate 117 are driven to move, thereby cleaning other positions of the circuit board of the liquid crystal display screen through the hollow plate 117 and the air outlet groove 118.

[0044] When the hollow plate 117 moves, the adjusting assembly 119 is also driven to move. Under the influence of the plurality of protrusions 102, the adjusting assembly 119 drives the hollow plate 117 and the installation box 115 to swing, thereby changing the angle between the air outlet groove 118 and the circuit board of the liquid crystal display screen, and dynamically changing the airflow direction of the air outlet groove 118, so as to avoid the accumulation of dust in the dead angle. The periodic change of the airflow direction caused by the swing forms a local vortex to disturb the stubborn dust attached to the surface of the circuit board of the liquid crystal display screen.

[0045] As shown in Figures 2-5 , the adjusting assembly 119 comprises a connecting plate 1191, a guide plate 1192 and a roller 1194. The connecting plate 1191 is fixedly connected with the hollow plate 117; the guide plate 1192 is located in the guide box 101 and is slidably connected with the guide box 101, and is connected with the connecting plate 1191 through a plurality of springs 1193; and the roller 1194 is rotatably installed on the connecting plate 1191.

[0046] Specifically, when the hollow plate 117 drives the connecting plate 1191 and the guide plate 1192 to move, the roller 1194 is also driven to move upward. When the roller 1194 moves, it will contact the protrusion, thereby driving the connecting plate 1191 to move and compressing the spring 1193. When the roller 1194 is separated from the protrusion, the elastic force of the spring 1193 will drive the connecting plate 1191 to reset. When the connecting plate 1191 moves, the hollow plate 117 is driven to rotate, thereby dynamically changing the airflow direction of the air outlet groove 118.

[0047] As shown in Figure 1 and Figure 9As shown, the clamping and collecting mechanism 200 comprises a fixed clamping box 201, a dust suction groove 202, two electric push rods 203, a movable clamping plate 204 and a filter plate 206. The fixed clamping box 201 is installed on the box body 100, the fixed clamping box 201 is a cavity structure, and the bottom of the fixed clamping box 201 is semicircular. The dust suction groove 202 is formed through the top surface of the fixed clamping box 201, and is used to suck the dust blown from the liquid crystal display circuit board by the blowing mechanism 110. The two electric push rods 203 are both installed on the top surface of the fixed clamping box 201. The movable clamping plate 204 is fixedly connected with the extension ends of the two electric push rods 203, and is used to clamp the liquid crystal display in cooperation with the fixed clamping box 201. The filter plate 206 is installed in the fixed clamping box 201. The clamping surface of the movable clamping plate 204 is pasted with a 1mm-thick silica gel buffer pad, and the surface of the silica gel pad is provided with anti-slip texture to avoid scratching the liquid crystal display during clamping.

[0048] Specifically, when the liquid crystal display needs to be clamped, the liquid crystal display is placed between the fixed clamping box 201 and the movable clamping plate 204, and then the two electric push rods 203 are started to drive the movable clamping plate 204 to move downward, so that the movable clamping plate 204 cooperates with the fixed clamping box 201 to clamp the liquid crystal display.

[0049] As shown, Figures 6-8 The clamping and collecting mechanism 200 further comprises an air suction assembly 210, which comprises an elbow pipe 211, a plurality of self-resetting piston components 212, a rotating rod 213, a plurality of cams 214 and an exhaust pipe 215. The elbow pipe 211 is installed on the box body 100 and is fixedly connected and communicated with the fixed clamping box 201. The plurality of self-resetting piston components 212 are all installed on the inner wall of the box body 100, and each self-resetting piston component 212 comprises a piston cylinder 2121, an air suction pipe 2122, a gas conveying pipe 2123, a reset spring and a push plate. A piston sheet is slidably installed in the piston cylinder 2121, a piston rod is installed on the piston sheet, the piston rod is fixedly connected with the push plate, the piston rod is slidably connected with the piston cylinder 2121, the reset spring is installed between the piston cylinder 2121 and the push plate, the air suction pipe 2122 and the gas conveying pipe 2123 are both installed on the piston cylinder 2121, and a one-way valve is installed in each of the air suction pipe 2122 and the gas conveying pipe 2123. The air suction pipe 2122 is fixedly connected and communicated with the elbow pipe 211. The rotating rod 213 and the lead screw 112 are both provided with belt pulleys, and the two belt pulleys are connected by a transmission belt 216. The plurality of cams 214 are all installed on the rotating rod 213, and each cam 214 is in contact with the push plate of each self-resetting piston component 212. The exhaust pipe 215 is fixedly connected and communicated with the gas conveying pipes 2123 of the plurality of self-resetting piston components 212.

[0050] Specifically, when the screw rod 112 rotates, it drives the rotating rod 213 through the transmission belt 216, and then drives the plurality of cams 214 to rotate. When the cam 214 rotates, it pushes the push plate to move, and under the cooperation of the reset spring, the push plate moves horizontally back and forth, and then the air in the fixed clamping plate box 201 is extracted through the piston cylinder 2121, the air extraction pipe 2122 and the elbow pipe 211, so that the fixed clamping plate box 201 extracts the air outside through the dust collection groove 202, and a negative pressure is formed in the fixed clamping plate box 201, so that the dust blown by the blowing mechanism 110 from the liquid crystal display circuit board is sucked into the fixed clamping plate box 201. The filter plate 206 in the fixed clamping plate box 201 filters the air and blocks the dust from entering the elbow pipe 211.

[0051] As shown in Figure 1 The clamping and collecting mechanism 200 further comprises a pressure sensor and a display 205. The pressure sensor is installed in the movable clamping plate 204; the display 205 is installed on the movable clamping plate 204, and the display 205 is used to display the value detected by the pressure sensor.

[0052] Specifically, by setting the pressure sensor and the display 205, the clamping force of the movable clamping plate 204 and the fixed clamping plate box 201 on the liquid crystal display can be measured, so as to avoid that the liquid crystal display is separated due to insufficient clamping force, or the liquid crystal display is damaged due to excessive clamping force.

[0053] Working principle: by removing the rear shell of the liquid crystal display to expose the circuit board of the liquid crystal display, and then placing the liquid crystal display between the fixed clamping plate box 201 and the movable clamping plate 204, and making the circuit board of the liquid crystal display face the inside of the box body 100, and then starting the two electric push rods 203 to drive the movable clamping plate 204 to move downward, and then the movable clamping plate 204 cooperates with the fixed clamping plate box 201 to clamp the liquid crystal display. When clamping the liquid crystal display, the value displayed on the display 205 is observed to avoid that the liquid crystal display is separated due to insufficient clamping force, or the liquid crystal display is damaged due to excessive clamping force.

[0054] After clamping, the fan 116 is started, which will convey air into the hollow plate 117, and the gas will be discharged through the air outlet groove 118. The air discharged through the air outlet groove 118 will blow to the circuit board of the liquid crystal display, so as to clean the dust on the circuit board of the liquid crystal display.

[0055] Then the motor 111 is started to drive the screw rod 112 to rotate, and then drive the screw nut 113 to move. When the screw nut 113 moves, it drives the mounting box 115 and the hollow plate 117 to move, so as to clean the dust on other positions of the liquid crystal display circuit board through the hollow plate 117 and the air outlet groove 118.

[0056] Furthermore, when the hollow plate 117 moves, it also drives the connecting plate 1191 and the guide plate 1192 to move, which in turn drives the roller 1194 to move. When the roller 1194 moves, it will contact the protrusion, which will push the connecting plate 1191 to move and compress the spring 1193. When the roller 1194 separates from the protrusion, the rebound force of the spring 1193 will push the connecting plate 1191 to reset. When the connecting plate 1191 moves, it will drive the hollow plate 117 to rotate, thereby changing the angle between the air outlet 118 and the LCD circuit board, so that the airflow direction of the air outlet 118 will change dynamically, avoiding dust accumulation in dead corners. Moreover, the periodic change in airflow direction caused by the swing will form local vortices, disturbing the stubborn dust attached to the surface of the LCD circuit board.

[0057] When the lead screw 112 rotates, it drives the rotating rod 213 through the transmission belt 216, which in turn drives multiple cams 214 to rotate. When the cams 214 rotate, they push the push plate to move, and with the cooperation of the return spring, the push plate moves horizontally back and forth. This causes the air in the fixed clamp box 201 to be drawn out through the piston cylinder 2121, the air extraction pipe 2122 and the bent pipe 211. This causes the fixed clamp box 201 to draw out the outside air through the dust extraction groove 202, creating a negative pressure inside the fixed clamp box 201. This draws the dust blown from the LCD circuit board by the blowing mechanism 110 into the fixed clamp box 201.

[0058] This device achieves power linkage between the purging mechanism 110 and the suction component 210 through the transmission belt 216, eliminating the need for a separate motor for the suction component. This not only reduces the overall energy consumption of the device but also reduces the internal installation space required.

[0059] When the cam 214 rotates, it pushes the push plate to move towards the piston cylinder 2121. This, in turn, transports the air in the piston cylinder 2121 to the exhaust pipe 215 via the air supply pipe 2123 through the piston rod and piston plate. The air in the exhaust pipe 215 is blown out through the air nozzle. The air blown out by the air nozzle causes the fan blade 223 to rotate, which in turn drives the crossbar 221 and the spiral blade 222 to rotate. The rotating spiral blade 222 transports the dust in the fixed clamp box 201 towards the discharge trough 207, so that the dust is discharged through the discharge trough 207. In this device, the spiral blade 222 of the cleaning component 220 can quickly discharge the filtered dust, preventing the dust from accumulating in the fixed clamp box 201 and diffusing to the LCD circuit board through the dust suction trough 202.

[0060] Example 2: As Figure 9 As shown, while all other parts are the same as in Example 1, the difference between this example and Example 1 is that:

[0061] The clamping and collecting mechanism 200 also includes a cleaning assembly 220, which includes a crossbar 221, a spiral blade 222, and a fan blade 223. The crossbar 221 is rotatably connected to the fixed clamping box 201, and one end of the crossbar 221 extends outside the fixed clamping box 201; the spiral blade 222 is located inside the fixed clamping box 201 and is fixedly connected to the crossbar 221; the fan blade 223 is installed on the end of the crossbar 221 located outside the fixed clamping box 201.

[0062] A discharge groove 207 is provided on the bottom surface of the fixed clamp box 201. The outer diameter of the spiral blade 222 is 12mm. The inner cavity of the fixed clamp box 201 near the discharge groove 207 is cylindrical with an inner diameter of 12.2mm. The gap between the spiral blade 222 and the inner wall of the cylindrical cavity is 0.1mm, ensuring that the spiral blade can push the dust to the discharge groove 207 when it rotates.

[0063] An air nozzle is installed at the end of the exhaust pipe 215 near the fan blade 223, with the nozzle facing the fan blade 223. The air nozzle is cylindrical, made of ABS, with a nozzle diameter of 2mm. Its axis is perpendicular to the end face of the fan blade 223, and the minimum distance between the nozzle outlet and the fan blade 223 is 2mm. The fan blade is made of lightweight ABS, with a single blade area of ​​15mm², a thickness of 1mm, and a center of gravity 5mm from the axis of the crossbar 221. A protective box 224 is installed on the side of the housing 100, and both the air nozzle and the fan blade 223 are located within the protective box 224.

[0064] like Figure 6 As shown, the tips of the multiple cams 214 are oriented differently. When the rotating rod 213 rotates, the multiple cams 214 drive different self-resetting piston components 212 to perform air extraction and air delivery respectively.

[0065] Working principle: When the cam 214 rotates, it pushes the push plate to move towards the piston cylinder 2121. Then, through the piston rod and piston plate, the air in the piston cylinder 2121 is transported to the exhaust pipe 215 via the air supply pipe 2123. The air in the exhaust pipe 215 is blown out through the air nozzle. The air blown out by the air nozzle will cause the fan blade 223 to rotate, which in turn drives the crossbar 221 and the spiral blade 222 to rotate. The rotating spiral blade 222 will transport the dust in the fixed clamp box 201 towards the discharge trough 207, so that the dust is discharged through the discharge trough 207. In this device, the spiral blade 222 of the cleaning component 220 can quickly discharge the filtered dust, preventing the dust from accumulating in the fixed clamp box 201 and diffusing to the LCD circuit board through the dust suction trough 202.

[0066] The above merely describes preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, within the technical scope disclosed by the present application, can make equivalent replacements or changes according to the technical scheme and inventive concept of the present application, which should be covered within the protection scope of the present application.

[0067] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and do not limit the application to the specific embodiments. Obviously, many modifications and changes can be made according to the content of the present application. The present application selects and describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. An internal dust removal device based on a micro liquid crystal display screen, characterized in that, include: The housing has a guide box installed inside, and multiple protrusions are fixed at intervals along the length of the inner side wall of the guide box. A purging mechanism for purging a clamped liquid crystal display screen, comprising: The motor is mounted on the housing, and a lead screw is mounted on its power output shaft. The lead screw is rotatably connected to the housing, and a lead screw nut is provided on the lead screw. The mounting box is hinged to the lead screw nut, and a fan is installed inside it; A hollow plate is fixedly connected to the mounting box, and an air outlet slot is provided on it, which is connected to the air outlet end of the fan; An adjustment component is used to cause the hollow plate to swing by contacting or separating from the protrusion; A clamping and collecting mechanism is used to clamp the liquid crystal display screen and to collect the dust blown off by the blowing mechanism. When the lead screw nut drives the mounting box and hollow plate to move, the adjustment component intermittently contacts multiple protrusions in the guide box, causing the angle of the hollow plate relative to the lead screw nut to change continuously and dynamically.

2. The internal dust removal device based on a micro liquid crystal display screen according to claim 1, characterized in that, The adjustment component includes: The connecting plate is fixedly connected to the hollow plate; A guide plate is located inside the guide box and slidably connected to the guide box, and is connected to the connecting plate by multiple springs; Rollers are rotatably mounted on the connecting plate.

3. The internal dust removal device based on a micro liquid crystal display screen according to claim 1, characterized in that, The clamping and collecting mechanism includes: The fixed clamp box is installed on the box body and has a cavity structure with a semi-circular bottom. A dust collection groove is formed through the top surface of the fixed clamp box; Both electric actuators are mounted on the top surface of the fixed clamp box; The movable clamp is fixedly connected to the extension ends of the two electric push rods and is used to clamp the liquid crystal display screen in cooperation with the fixed clamp box. The filter plate is installed inside the fixed clamp box.

4. The internal dust removal device based on a micro liquid crystal display screen according to claim 3, characterized in that, The clamping and collecting mechanism further includes an air extraction component, which includes: A bent pipe is installed on the box body, with one end of it fixedly connected to and communicating with the fixed clamp box; Multiple self-resetting piston components are installed on the inner wall of the housing. Each self-resetting piston component includes a piston cylinder, an air extraction pipe, an air delivery pipe, a reset spring, and a push plate. The air extraction pipe is fixedly connected to and communicates with the bend pipe. The rotating rod is rotatably connected to the housing and is connected to the lead screw via a transmission belt. Multiple cams are mounted on the rotating rod and respectively contact the push plates of multiple self-resetting piston components; The exhaust pipe is fixedly connected to and communicates with the air supply pipes of the plurality of self-resetting piston components.

5. The internal dust removal device based on a micro liquid crystal display screen according to claim 4, characterized in that, The clamping and collecting mechanism further includes a cleaning component, which comprises: A crossbar is rotatably connected to the fixed clamp box, with one end extending outside the fixed clamp box; The spiral blade is located inside the fixed clamp box and is fixedly connected to the crossbar. The fan blades are installed on the end of the crossbar located outside the fixed clamp box.

6. The internal dust removal device based on a micro liquid crystal display screen according to claim 5, characterized in that, A discharge groove is provided on the bottom surface of the fixed clamp box, and an air nozzle is installed on the end of the exhaust pipe near the fan blade, with the air nozzle facing the fan blade.

7. The internal dust removal device based on a micro liquid crystal display screen according to claim 3, characterized in that, The clamping and collecting mechanism also includes: A pressure sensor is installed inside the movable clamp. A display, mounted on the movable clamp, is used to display the values ​​detected by the pressure sensor.

8. The internal dust removal device based on a micro liquid crystal display screen according to claim 1, characterized in that, The purging mechanism also includes: A fixing block is installed on the lead screw nut and is slidably connected to a groove on the inner wall of the housing.

Images