Dryer for display screen backboard

Abstract

The invention relates to the technical field of display screen drying, in particular to a drying machine for a display screen backboard, which comprises a machine body and an airflow control device, and a drying cavity, a first hot air branch and a second hot air branch are arranged in the machine body; each of the first hot air branch and the second hot air branch comprises a first air inlet cavity, a second air inlet cavity and an exhaust cavity; the airflow control device is composed of an electromagnetic part and an airflow control part. The airflow control part is provided with an air collecting cavity, a first air inlet branch, a second air inlet branch and an exhaust branch. The first air inlet branch, the second air inlet branch and the exhaust branch correspond to the first air inlet cavity, the second air inlet cavity and the exhaust cavity respectively. The electromagnetic part controls the first air inlet branch or the second air inlet branch to be opened and supplies air to the drying cavity through the first air inlet cavity or the second air inlet cavity. When air is supplied through the first air inlet cavity or the second air inlet cavity, axial airflow or radial airflow can be generated in the drying cavity, and the back plate is rapidly dried through two kinds of airflow in different flow directions.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen drying, and particularly to a dryer for a display screen backplane. Background Art

[0002] A display screen, also known as a monitor, is one of the output devices of a host (such as a computer), and is a display tool that displays certain electronic files on the screen through a transmission device, such as the well-known liquid crystal display, plasma display, and so on.

[0003] Currently, a display screen mainly consists of components such as a backplane (also called a rear case), a front frame (also called a front cover), a module, a light guide column, a main board, and a button board. Among them, the backplane and the front cover form the casing (also called the outer shell) of the display, and both are used to protect, accommodate, and support each component. Therefore, they are one of the indispensable components of the display screen.

[0004] Nowadays, due to the different structures and configurations of components such as the main board, the light guide column, the module, and the button board, in order for the backplane to adapt to components with different structures to ensure stability after assembly, various grooves (or receiving grooves) need to be opened on the backplane for cooperation. Therefore, the internal structure of the backplane is relatively complex and irregular. Thus, in the production process of the display screen, the cleaning treatment of the backplane is particularly crucial. For example: Usually, after the backplane is formed, in order to avoid impurities in the forming process from affecting the final assembly of the display screen (such as scratching the main board, short circuit in operation, etc.), it is necessary to clean and dry the backplane in sequence. However, the current display screen dryer has deficiencies in drying efficiency and effect. Due to the irregularity of the internal structure of the backplane, it cannot quickly dry the backplane with a relatively complex structure (that is, there are drying dead corners). Therefore, in order to ensure the drying effect, it is usually necessary to increase the drying time when drying the backplane to ensure the drying effect. At the same time, due to the influence of the material of the backplane, in order to avoid deformation of the backplane during drying, it is also necessary to lower the drying temperature. Therefore, the drying process becomes even longer.

[0005] In summary, it is necessary to provide a dryer to solve the above problems. Summary of the Invention

[0006] Aiming at the deficiencies existing in the prior art, the purpose of the present invention is to provide a dryer for a display screen backplane, aiming to solve the problems presented in the above background art.

[0007] The technical solution of the present invention is realized as follows: A dryer for a display screen backplane includes a machine body. A drying chamber for placing the backplane of the display is provided inside the machine body, and a first hot air branch and a second hot air branch are located on both sides of the drying chamber; Both the first hot air branch and the second hot air branch include a first intake cavity, a second intake cavity, and an exhaust cavity that are longitudinally spaced apart; Wherein, air flow control devices are further installed on both sides of the body. The air flow control device consists of an electromagnetic part and an air flow control part. At least an air collecting cavity, a first intake branch, a second intake branch, and an exhaust branch are constructed and formed within the air flow control part; The first intake branch corresponds to and communicates with the first intake cavity, the second intake branch corresponds to and communicates with the second intake cavity, and the exhaust branch corresponds to the exhaust cavity; the electromagnetic part can control the opening of the first intake branch or the second intake branch and enable the air collecting cavity to supply air to the drying cavity through the first intake cavity or the second intake cavity; When the first intake cavity supplies air to the drying cavity, hot air flowing axially can be generated within the drying cavity; When the second intake cavity supplies air to the drying cavity, hot air flowing radially can be generated within the drying cavity.

[0008] Preferably: The air flow control part includes: An air flow control body, integrally formed with the body, and having a cavity therein; A partition structure, integrally formed with the air flow control body, and dividing the cavity into a first cavity, a second cavity, and the air collecting cavity; A first movable body, installed in the first cavity through a first spring, and dividing the first cavity into the first intake branch and an upper intake branch; A second movable body, installed in the second cavity through a second spring, and dividing the second cavity into a lower intake branch and an exhaust branch; A first intake port and a second intake port, provided on the partition structure, and respectively communicating with the first intake branch and the lower intake branch; A third intake port, provided on the partition structure, and corresponding to the exhaust branch; A first exhaust port, provided on the partition structure, and communicating between the first intake branch and the first intake cavity; A second exhaust port, provided on the partition structure, and communicating between the upper intake branch and the second intake cavity; A communication port, formed on the partition structure, and communicating the upper intake branch and the lower intake branch and enabling the two to form the second intake branch; A third exhaust port, provided on the air flow control body, and communicating with the exhaust branch; Wherein, a main exhaust port controlled to open and close by the partition structure is further provided on the body. When the air collecting cavity is inflated, the main exhaust port is opened by the partition structure.

[0009] Preferably: The partition structure includes: The upper partition body has the first cavity, the first air inlet, the first air outlet and the second air outlet; The lower partition body is integrally formed with the upper partition body and has the second cavity, the second air inlet, the third air inlet and the third air outlet; Wherein, the upper partition body closes the first air inlet cavity and the second air inlet cavity, and a movable plate for opening and closing the main air outlet is slidably connected to the outer wall of the lower partition body, and a return spring is connected between one side of the movable plate and the machine body.

[0010] Preferably, a drying container is rotatably provided in the drying cavity, and the drying container includes: A cylinder body is rotatably arranged in the drying cavity, and the outer side wall covers and seals the first air inlet cavity and the second air inlet cavity; An air flow gap is arranged on the top side wall of the cylinder body, and hot air in the first air inlet cavity axially enters the cylinder body through the air flow gap; Radial air inlets are distributed on the inner wall of the cylinder body, and hot air in the second air inlet cavity radially enters the cylinder body through the radial air inlets; Wherein, the bottom of the cylinder body is open and communicates with the exhaust cavity.

[0011] Preferably, a cylinder cover structure detachably connected to the machine body is provided on the cylinder body, and the cylinder cover structure includes: A machine cover is detachably connected to the machine body; A loading rack is installed below the machine cover and can enter the cylinder body; An air guiding structure is installed above the machine cover; Wherein, the loading rack includes a base rod fixedly connected to the machine cover at one end and at least two semi-circular filters hinged to the base rod. A plurality of elastic clips are fixedly connected to each semi-circular filter, and a lifting rod controlled by the air guiding structure and hinged to the semi-circular filter at one end is movable up and down on the machine cover.

[0012] Preferably, the air guiding structure includes: An air guiding body is provided with at least two air guiding cavities and a driving cavity; A piston plate is slidably connected in the air guiding cavity, and a piston spring is connected between the piston plate and the air guiding cavity; A piston rod is connected to the piston plate, and one end extends and moves in the driving cavity; A worm is rotatably connected in the driving cavity and can be controlled to rotate by a motor; A worm gear is rotatably connected in the driving cavity and is engaged with the worm; A driving gear is coaxially connected to the worm gear through a rotating shaft; A driving rack is integrally formed on the piston rod and is engaged with the driving gear; Among them, a one-way intake valve and a one-way exhaust valve communicated with the air intake cavity are arranged on the air intake body, and the one-way exhaust valve is communicated with the air collecting cavity through a trachea; One end of the lifting rod extends and enters the air intake cavity to be connected with the piston plate.

[0013] Preferably: a flow guiding structure is further arranged in the cylinder body, an exhaust passage communicated with the third exhaust port is formed in the machine body, and a stress impeller for driving the flow guiding structure to move is rotatably connected in the exhaust passage.

[0014] Preferably: the flow guiding structure includes: A first rotating disk, which is connected with the stress impeller through a transmission shaft; A first eccentric port, which is arranged on the first rotating disk and through which the hot air in the cylinder body is discharged to the exhaust cavity; A second eccentric port, which is arranged on the first rotating disk; A second rotating disk, which is coaxially arranged at the second eccentric port, and a limiting rib and a limiting groove which are mutually adapted are arranged on the matching surface of the second rotating disk and the second eccentric port; A driven gear, which is coaxially connected with the second rotating disk through a transmission shaft; Among them, a flow guiding part is arranged on the second rotating disk, and a toothed ring meshed with the driven gear is arranged on the inner wall of the cylinder body.

[0015] Preferably: the flow guiding part includes: A flow guiding frame, which is installed on the second rotating disk and has an air flow channel arranged therethrough; A flow guiding body, which is installed in the air flow channel; Among them, a flow guiding surface is formed on the outer wall of the flow guiding frame.

[0016] Preferably: the channel diameter of the air flow channel gradually decreases in the air flow direction, and the cross-sectional width of the flow guiding body gradually decreases in the air flow direction.

[0017] The present invention has at least the following beneficial effects: 1. The present invention uses hot air to dry the backplane of the display screen (hereinafter referred to as "backplane"). During the drying process, the "axial air flow" flowing from top to bottom and the "radial air flow" flowing into the drying cavity from one side are used to dry the backplane in the drying cavity. Moreover, the flow directions of the "axial air flow" and the "radial air flow" are different, which can reduce the drying dead angle, thereby ensuring the drying effect and improving the drying efficiency.

[0018] 2. In order to further control the flow diversity of the "axial air flow" inside the drying container, the present invention provides an air flow notch on the top side wall of the drying container. When the drying container rotates, the position of the air flow notch can be changed, so that the air flow notch corresponds to the first intake cavity of the first hot air branch or the first intake cavity of the second hot air branch, thereby enabling the hot air flow to enter the drying container from different directions and ensuring the drying efficiency. 2.1 Further, in order to further control the "axial air flow", the present invention also provides a diversion structure at the bottom of the drying container. The first eccentric opening of the diversion structure is for discharging the hot air flow. When the first rotating disk rotates, the position of the first eccentric opening is changed. Therefore, in cooperation with the air flow notch whose position also changes, the cooperation between the two can adjust the flow path of the "axial air flow" inside the drying container, thereby improving the drying efficiency.

[0019] 3. In order to further control the "radial air flow", the present invention provides a diversion structure inside the drying container. By using the diversion structure, the flow direction of part of the radial air flow can be changed, so that the "radial flow direction" becomes more diverse. Specifically, when the "radial air flow" flows on the diversion surface of the diversion frame, it is dispersed by the diversion surface. When the "radial air flow" flows in the air flow channel, the "radial air flow" is converged. The dispersed air flow can move around the loading rack, and the converged air flow can more powerfully blow off the accumulated water on the back plate, thereby further improving the drying efficiency.

[0020] 4. The air intake structure of the present invention is used to introduce hot air flow into the first hot air branch or the second hot air branch respectively, and the two air intake cavities of the air intake structure can exhaust air alternately, so that the hot air flow can stay inside the drying container after entering the first hot air branch or the second hot air branch, thereby prolonging the residence time of the hot air inside the drying container and improving the use effect of the hot air flow.

[0021] 4.1 When the air intake structure of the present invention intakes air, it can also control the movement of the loading rack, thereby jittering the back plate on the loading rack, which can accelerate the elimination of the accumulated water on the machine cover to increase the drying efficiency.

[0022] In addition, other advantages of the present invention will be shown in the embodiment part of the present invention, making the beneficial effects of the present invention more remarkable. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 Schematic diagram of specific embodiment 1 of the present invention; Figure 2 Schematic diagram of removing the outer shell on one side of the body in specific embodiment 1 of the present invention; Figure 3 is Figure 1 the A-A cross-sectional view in Figure 4 Schematic diagram of specific embodiment 2 of the present invention; Figure 5 is Figure 4 the B-B cross-sectional view in Figure 6 Schematic diagram of the loading rack in specific embodiment 2 of the present invention; Figure 7 Schematic diagram of the diversion structure in specific embodiment 2 of the present invention; Figure 8 is Figure 5 the enlarged view of part A in Figure 9 is Figure 8 the C-C cross-sectional view in Figure 10 is Figure 8 the D-D cross-sectional view in Figure 11 is Figure 8 the enlarged view of part B in Figure 12 is Figure 8 the enlarged view of part C in Figure 13 Cross-sectional schematic diagram of the fluid guide in specific embodiment 2 of the present invention; Figure 14 Figure 8 the E-E cross-sectional view in Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] As Figures 1-3 shown, the present invention discloses a dryer for a display backplane, including a body 10. A drying cavity 100 for placing the display backplane and a first hot air branch and a second hot air branch located on both sides of the drying cavity 100 are provided inside the body 10; The first hot air branch and the second hot air branch of this embodiment both include a first air inlet cavity 21, a second air inlet cavity 22 and an exhaust cavity 23 which are longitudinally arranged at intervals; Wherein, air flow control devices are also installed on both sides of the body 10. The air flow control device is composed of an electromagnetic part 30 and an air flow control part 31. The electromagnetic part 30 of this embodiment is an electromagnet installed on the body 10 and is protected by a heat dissipation housing 300 provided on the body 10. At least an air collecting cavity, a first air inlet branch, a second air inlet branch and an exhaust branch are constructed and formed in the air flow control part 31; The first air inlet branch corresponds to and communicates with the first air inlet cavity 21, the second air inlet branch corresponds to and communicates with the second air inlet cavity 22, and the exhaust branch corresponds to the exhaust cavity 23; the electromagnetic part 30 can control the opening of the first air inlet branch or the second air inlet branch and enable the air collecting cavity to supply air to the drying cavity 100 through the first air inlet cavity 21 or the second air inlet cavity 22; When the first air inlet cavity 21 supplies air to the drying cavity 100, hot air flowing axially can be generated in the drying cavity 100; When the second air inlet cavity 22 supplies air to the drying cavity 100, hot air flowing radially can be generated in the drying cavity 100.

[0027] In this embodiment: the air flow control part 31 includes: An air flow control body 310, which is integrally formed with the body 10 and has a cavity inside; A partition structure, which is integrally formed with the air flow control body 310 and divides the cavity into a first cavity, a second cavity and the air collecting cavity 311; A first movable body 312, which is installed in the first cavity through a first spring 312a and divides the first cavity into the first air inlet branch 312b and an upper air inlet branch 312c; A second movable body 313, which is installed in the second cavity through a second spring 313a and divides the second cavity into a lower air inlet branch 313b and an exhaust branch 313c; A first air inlet 314 and a second air inlet 315, which are provided on the partition structure and are respectively communicated with the first air inlet branch 312b and the lower air inlet branch 313b; A third air inlet 316, which is provided on the partition structure and corresponds to the exhaust branch 313c; A first exhaust port 317, which is provided on the partition structure and is communicated between the first air inlet branch 312b and the first air inlet cavity 21; A second exhaust port 318, which is provided on the partition structure and is communicated between the upper air inlet branch 312c and the second air inlet cavity 22; The communication port 319 is formed on the partition structure and communicates with the upper intake branch 312c and the lower intake branch 313b to form the second intake branch therebetween. The third exhaust port 320 is provided on the air flow control body and communicates with the exhaust branch 313c. Wherein, a main exhaust port 40 controlled to open and close by the partition structure is further provided on the machine body 10. When the air collecting cavity 311 is inflated, the main exhaust port 40 is opened by the partition structure.

[0028] In this embodiment: The partition structure includes: The upper partition body 41 has the first cavity, the first intake port 314, the first exhaust port 317 and the second exhaust port 318. The lower partition body 42 is integrally formed with the upper partition body 41 and has the second cavity, the second intake port 315, the third intake port 316 and the third exhaust port 320. Wherein, the upper partition body 41 closes the first intake cavity 21 and the second intake cavity 22, and a movable plate 43 for opening and closing the main exhaust port 40 is slidably connected to the outer wall of the lower partition body 42. A return spring 44 is connected between one side of the movable plate 43 and the machine body 10. A secondary exhaust port 45 capable of communicating or being misaligned with the main exhaust port 40 is provided on the movable plate 42.

[0029] In this embodiment, the drying cavity 100 is provided with a side plate 46 for closing the second intake cavity 22 and a support plate 47 at the connection between the drying cavity 100 and the exhaust cavity 23. Through holes for the hot air flow to pass through are provided on the side plate 46 and the support plate 47.

[0030] In this embodiment, a machine cover 49 capable of being controlled by a hydraulic cylinder 490 is provided on the machine body, and a nozzle 491 communicating with the air collecting cavity 311 is further provided on the machine body 10.

[0031] Reference Figures 1-3 , the principle of this embodiment is that during drying, the machine cover is opened, and the back plate to be dried is placed on the support plate. Subsequently, the hot air flow is sent into the air collecting cavity through the air nozzle (the generation of the hot air flow is a currently mature technical means, so it will not be elaborated in detail in this embodiment. It can be generated by supporting facilities such as heat exchangers and boilers in the prior art). When axial air flow needs to be generated (the first air inlet cavity supplies air to the drying cavity, and the hot air flow flows from top to bottom), the electromagnetic part is powered off, the first movable body closes the communication port and opens the first air inlet, and the hot air flow in the air collecting cavity enters the first air inlet cavity through the first air inlet branch and then enters the drying cavity; when radial air flow needs to be generated (the drying cavity is supplied with air through the second air inlet cavity, and the hot air flow is blown horizontally and radially into the drying air cavity through the through holes on the side plate), the electromagnetic part is powered on, the first movable body is attracted to open the communication port and close the first air inlet, and the hot air flow in the air collecting cavity enters the second air inlet branch formed by the upper air inlet branch and the lower air inlet branch through the second air inlet, and then enters the second air inlet cavity, and enters the drying cavity through the through holes on the side plate.

[0032] In summary, the drying method of this embodiment can be that the electromagnetic part on the left is powered off and the electromagnetic part on the right is powered on. Therefore, the air collecting cavity on the left supplies air to the drying cavity through the first air inlet branch and the first air inlet cavity, and the air collecting cavity on the right supplies air to the drying cavity through the second air inlet branch and the second air inlet cavity. The hot air flow enters the exhaust cavity after entering the drying cavity, and due to the flowing air in the second air inlet branch on the right, a negative pressure is formed in the second air inlet branch. Therefore, the gas in the exhaust cavity lifts the second movable body through the third air inlet and finally discharges from the third exhaust port out of the machine body.

[0033] In this embodiment, the back plate in the drying cavity is dried by the axial air flow formed by the first hot air branch and the radial air flow formed by the second hot air branch, the radial air flow formed by the first hot air branch and the axial air flow formed by the second hot air branch, the axial air flow formed by the first hot air branch and the axial air flow formed by the second hot air branch, and the radial air flow formed by the first hot air branch and the radial air flow formed by the second hot air branch, so as to reduce the dead angle of drying and improve the drying efficiency.

[0034] The axial air flow in this embodiment is the air flow that flows from top to bottom in the drying cavity (for example: the air flow that enters the drying cavity from the first air inlet cavity and flows towards the exhaust cavity); the radial air flow is the air flow that flows horizontally in the drying cavity (for example: the air flow that enters the drying cavity from the second air inlet cavity).

[0035] Embodiment 2 is different from Embodiment 1 in that: Reference Figures 4-14 In this embodiment: a drying container 5 is rotatably provided in the drying cavity 100, and the drying container 5 includes: A cylinder body 50 is rotatably provided in the drying cavity 100, and its outer side wall covers and seals the first air inlet cavity 21 and the second air inlet cavity 22; An air flow gap 51 is provided on the top side wall of the cylinder body 50 and allows the hot air in the first intake cavity 21 to axially enter the cylinder body 50; Radial intake ports 52 (which can also be replaced by one-way valves in other embodiments) are distributed on the inner wall of the cylinder body 50 and allow the hot air in the second intake cavity 22 to radially enter the cylinder body 50; Wherein, the bottom of the cylinder body 50 is open and communicates with the exhaust cavity 23.

[0036] In this embodiment: A cylinder cover structure detachably connected to the machine body 10 is provided on the cylinder body 50, and the cylinder cover structure includes: A machine cover 49 is detachably connected to the machine body 10. In this embodiment, the machine cover 49 is controlled by a hydraulic cylinder 490 to lift and lower, so as to open the feeding port at the top of the machine body 10; A feeding rack 61 is installed below the machine cover 49 and can enter the cylinder body 50; An air guiding structure 62 is installed above the machine cover 49; Wherein, the feeding rack 61 includes a base rod 610 fixedly connected to the machine cover 49 at one end and at least two semi-circular filter meshes 611 hinged to the base rod 610. A plurality of elastic clips 612 are fixedly connected to each semi-circular filter mesh 611. The elastic clips 612 are used to fix the back plate 1000 (the back plate in this embodiment is internally provided with honeycomb-shaped strengthening grooves to improve the structural strength of the back plate), and a lifting rod 613 controlled by the air guiding structure 62 and hinged to the semi-circular filter mesh 611 at one end is movable up and down on the machine cover 49; An articulated telescopic part 611a hinged to the lifting rod 613 is telescopically movable on the semi-circular filter mesh 611 to ensure that the semi-circular filter mesh can be smoothly controlled to move when the lifting rod moves.

[0037] In this embodiment: The air guiding structure 62 includes: An air guiding body 620 is provided with two air guiding cavities 621 and a driving cavity 622; A piston plate 623 is slidably connected in the air guiding cavity 621, and a piston spring 624 is connected between the piston plate 623 and the air guiding cavity 621; A piston rod 625 is connected to the piston plate 623, and one end extends and is movable in the driving cavity 622; A worm 626 is rotatably connected in the driving cavity 622 and can be controlled to rotate by a motor 626a; A worm gear 627 is rotatably connected in the driving cavity 622 and is engaged with the worm 626; A driving gear 628 is coaxially connected to the worm gear 627 through a rotating shaft; The driving rack 629 is integrally formed on the piston rod 625 and meshes with the driving gear 628. A support shaft 622b cooperating with the piston rod 625 is provided in the driving cavity 622; Wherein, a one-way intake valve 620a and a one-way exhaust valve 620b communicating with the air intake cavity 621 are provided on the air guiding body 620. The one-way exhaust valve 620b is communicated with the air collecting cavity 311 through an air pipe 620c; One end of the lifting rod 613 extends and enters the air intake cavity 621 to be connected with the piston plate 623.

[0038] In this embodiment: A flow guiding structure 7 is further provided in the cylinder body 50, an exhaust passage 8 communicating with the third exhaust port 320 is formed in the machine body 10, and a stress impeller 80 for driving the activity of the flow guiding structure 7 is rotatably connected in the exhaust passage 8.

[0039] In this embodiment: The flow guiding structure 7 includes: A first rotating disk 70, connected with the stress impeller 80 through a transmission shaft 71; A first eccentric port 72, provided on the first rotating disk 70 and for discharging the hot air in the cylinder body to the exhaust cavity; A second eccentric port 73, provided on the first rotating disk 70; A second rotating disk 74, coaxially arranged at the second eccentric port 73, and mutually adapted limiting ribs 740 and limiting grooves are provided on the mating surface of the second rotating disk 74 and the second eccentric port 73 to ensure that the second rotating disk 74 can rotate at the second eccentric port 73; A driven gear 75, coaxially connected with the second rotating disk 74 through a transmission shaft 750; Wherein, a flow guiding portion 76 is provided on the second rotating disk 74, and a toothed ring 77 meshing with the driven gear 75 is provided on the inner wall of the cylinder body 50.

[0040] In this embodiment, after the hot air flows in the two exhaust passages 8 passes through each stress impeller, the driving direction of the first rotating disk is the same.

[0041] In this embodiment: The flow guiding portion 76 includes: A flow guiding frame 760, installed on the second rotating disk 74 and having a through air flow channel 761; A flow guiding body 762, installed in the air flow channel 761; Wherein, a flow guiding surface 763 is formed on the outer wall of the flow guiding frame 760.

[0042] In this embodiment: The channel diameter of the air flow channel 761 gradually decreases from the air flow direction, and the cross-sectional width of the flow guiding body 762 gradually decreases from the air flow direction.

[0043] In this embodiment, a driven gear ring 90 is provided on the outer wall of the cylinder body 50. A moving rack 91 that meshes with the driven gear ring 90 is slidably connected to the inner wall of the exhaust cavity 23. The moving rack 91 is controlled to move by a lead screw structure 920. The lead screw structure 920 is controlled by a lead screw motor 92 provided on the machine body to rotate clockwise or counterclockwise. In this embodiment, to ensure the smooth movement of the lead screw seat of the lead screw structure 920, the lead screw seat is arranged to slide on the cavity wall of the exhaust cavity 23. In other embodiments, the driving of the cylinder body can also adopt the worm and worm gear method, that is, the worm gear is coaxially installed with the cylinder body, the worm is driven by a motor, and cooperates with the worm gear, so as to control the rotation of the cylinder body.

[0044] In this embodiment, a sealing ring 500a is provided on the mating surface between the cylinder body 50 and the machine body 10 to achieve the mutual independence of the first intake cavity, the second intake cavity, and the exhaust cavity; and to make the first intake cavity of the first hot air branch and the first intake cavity of the second hot air branch independent of each other. That is to say, the first intake cavities of the first hot air branch and the second hot air branch are separated by the cylinder body 50. That is to say, the air flow gap can only communicate with the first intake cavity of the first hot air branch or the first intake cavity of the second hot air branch.

[0045] Reference Figures 4-14 , the principle of this embodiment is: 1. When the axial air flow enters (reference Figures 4-5 and Figure 8 ), the motor controls the rotation of the worm, and drives the worm gears on both sides to rotate. The driving gear is driven to rotate through the worm gear, and then the driving rack is controlled to move by the driving gear. When the driving rack moves, the piston rod controls the piston plate to squeeze the piston spring, and a negative pressure is formed in the air intake cavity, and the hot air flow is drawn into the air intake cavity from the one-way intake valve. When the driving gear continues to rotate and separates from the driving rack, the piston plate is controlled by the piston spring to reset, and the gas in the air intake cavity is squeezed out from the one-way outlet valve and sent into the air collecting cavity; The two air intake cavities of this embodiment respectively correspond to two air collecting cavities, and when one air intake cavity intakes air, the other air intake cavity exhausts air. Therefore, it is possible to alternately supply air to different air collecting cavities. This makes it so that when the cylinder body is controlled to rotate, the air flow gap will respectively communicate with the first cavity of the first hot air branch or the second cavity of the second hot air branch. Therefore, when the air flow gap communicates with the first hot air branch, the hot air flow of the first hot air branch enters the cylinder body, and the air collecting cavity of the second hot air branch is continuously inflated and the pressure rises, so that the main exhaust port and the secondary exhaust port on the movable plate are communicated. At this time, the hot air flow in the cylinder body is discharged from the main exhaust port through the exhaust cavity; When the cylinder rotates and is connected to the second hot gas branch, since the hot gas flow in the gas collecting chamber of the second hot gas branch is pre-inflated, when the first hot gas chamber of the second hot gas branch is connected to the air flow gap, the hot gas flow will quickly enter the cylinder, and the gas collecting chamber of the first hot gas branch is inflated, so that the main exhaust port and the secondary exhaust port on the other side are connected.

[0046] 2. During radial air intake, the motor continuously controls the rotation of the worm. At the same time, the electromagnetic part is energized, attracting the first movable body to move and opening the second exhaust port. The air flow in the gas collecting chamber is sent into the cylinder through the second intake chamber and the radial intake port, enters the exhaust chamber through the first eccentric port, and lifts the second movable body, entering the exhaust passage from the third exhaust port. The air flow entering the exhaust passage drives the force-receiving impeller to rotate, driving the first rotating disk to rotate and then discharging from the exhaust passage.

[0047] When the first rotating disk rotates, the position of the first eccentric port changes, so that the flow direction of the air flow in the cylinder can be changed, thereby improving the drying efficiency and effect on the back plate. More specifically, when the radial intake port jets air, the air flow first flows horizontally towards the axis of the cylinder, and then towards the direction of the first eccentric port. When the position of the first eccentric port continuously changes, the flow path of the hot air flow in the cylinder will also be changed, thereby increasing the contact effect between the hot air flow and the back plate, so as to improve the drying efficiency.

[0048] When the first rotating disk rotates, the guiding part also rotates around the loading rack. At the same time, the second rotating disk is also controlled to rotate by the driven gear. Therefore, the guiding surface on the outer wall of the guiding frame can correspond to the radial air flow port or the air flow channel can correspond to the radial air flow port. In the former case, the guiding surface can disperse the hot air flow ejected from the radial air flow port, so that the hot air flow moves around the loading rack. In the latter case, the air flow channel can converge the hot air flow discharged from the radial air flow port and blow it onto the loading rack, especially to remove the accumulated water in the honeycomb grooves of the back plate, thus ensuring the drying efficiency.

[0049] 3. When the piston plate moves, the semi-circular filter screen of the loading rack is controlled to move at the hinge position with the base rod through the lifting rod, so that the back plate on the semi-circular filter screen shakes, facilitating the better removal of the accumulated water on the back plate.

[0050] In summary, in this embodiment, air supply can be achieved through the first air inlet cavity of the first hot air branch and the second hot air branch, or through the second air inlet cavity of the first hot air branch and the second hot air branch; when air is supplied through the first air inlet cavity, since one of the air collecting cavities is inflated due to the rotation of the cylinder body, therefore, when the air collecting cavity is depressurized, the hot air flow inside it can quickly enter the cylinder body; when the air supply is in the radial direction (air is supplied through the second air inlet cavity) in this embodiment, when the air flow passes through the cylinder body and is discharged from the exhaust cavity, it passes through the exhaust passage, and the first rotating disk is controlled to rotate by the force-bearing impeller. The rotation of the first rotating disk can not only change the position of the first eccentric port, thereby adjusting the air flow direction inside the cylinder body, but also disperse or converge the air flow discharged from the radial air outlet through the diversion part, so as to quickly dry the back plate.

[0051] The foregoing are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A drying machine for a display screen back panel, comprising a machine body (10), characterized in that: The machine body (10) is provided with a drying chamber (100) for placing the back panel (1000) of the display, and a first hot air branch and a second hot air branch located on both sides of the drying chamber (100); The first hot gas branch and the second hot gas branch both comprise a first air inlet cavity (21), a second air inlet cavity (22) and an air exhaust cavity (23) which are arranged in a longitudinally spaced relationship; Wherein, airflow control devices are also installed on both sides of the machine body (10), and the airflow control device is composed of an electromagnetic part (30) and an airflow control part (31), and the airflow control part (31) at least constructs and forms an air collection cavity, a first air intake branch, a second air intake branch, and an exhaust branch; The first air intake branch corresponds to and is in communication with the first air intake chamber (21), the second air intake branch corresponds to and is in communication with the second air intake chamber (22), and the exhaust branch corresponds to the exhaust chamber (23); the electromagnetic part (30) is capable of controlling the first air intake branch or the second air intake branch to open and allowing the air collection chamber to supply air to the drying chamber (100) through the first air intake chamber (21) or the second air intake chamber (22); When the first air inlet cavity (21) supplies air to the drying cavity (100), hot air in an axial flow can be generated in the drying cavity (100); When the second air inlet cavity (22) supplies air to the drying cavity (100), hot air in a radial flow can be generated in the drying cavity (100).

2. A drying machine for display back panel according to claim 1, characterized in that: The airflow control unit (31) comprises: An airflow control body (310) is integrally formed with the machine body (10) and is provided with a cavity therein; A partition frame structure, formed integrally with the airflow control body (310), and dividing the cavity into a first cavity, a second cavity and the air collection cavity (311); A first movable body (312) is installed in the first cavity via a first spring (312a), and divides the first cavity into the first air intake branch (312b) and an upper air intake branch (312c); A second movable body (313) is installed in the second cavity via a second spring (313a), and divides the second cavity into a lower air intake branch (313b) and an exhaust branch (313c); The first air inlet (314) and the second air inlet (315) are arranged on the partition structure and are respectively connected to the first air inlet branch (312b) and the lower air inlet branch (313b); A third air inlet (316) is provided on the partition structure and corresponds to the exhaust branch (313c); A first exhaust port (317) is provided on the partition structure and is connected between the first air intake branch (312b) and the first air intake chamber (21); A second exhaust port (318) is provided on the partition frame structure and is connected between the upper air intake branch (312c) and the second air intake chamber (22); A communication port (319) is formed on the partition structure and connects the upper air intake branch (312c) and the lower air intake branch (313b) so that the two form the second air intake branch; A third exhaust port (320) is provided on the airflow control body and is in communication with the exhaust branch (313c); The machine body (10) is also provided with a main exhaust port (40) whose opening and closing is controlled by a partition structure; when the air collecting chamber (311) is inflated, the main exhaust port (40) is opened by the partition structure.

3. A drying machine for display back panel according to claim 2, characterized in that: The partition frame structure comprises: An upper partition frame (41) having the first cavity, a first air inlet (314), a first exhaust port (317) and a second exhaust port (318); The lower partition frame body (42) is integrally formed with the upper partition frame body (41), and comprises the second cavity, the second air inlet (315), the third air inlet (316) and the third air outlet (320); The upper partition frame (41) closes the first air inlet cavity (21) and the second air inlet cavity (22), and a movable plate (43) for opening and closing the main exhaust port (40) is slidably connected to the outer wall of the lower partition frame (42), and a return spring (44) is connected between one side of the movable plate (43) and the machine body (10).

4. A drying machine for display back panel according to claim 2 or 3, characterized in that: A drying container (5) is rotatably disposed in the drying chamber (100), and the drying container (5) comprises: The cylinder (50) is rotatably disposed in the drying chamber (100), and the outer wall covers and blocks the first air inlet chamber (21) and the second air inlet chamber (22); An air flow notch (51) is provided on the top side wall of the cylinder (50) and allows hot air in the first air inlet cavity (21) to enter the cylinder (50) axially; Radial air inlets (52) are distributed on the inner wall of the cylinder (50) and are used to allow hot air in the second air inlet cavity (22) to radially enter the cylinder (50); The bottom of the cylinder (50) is open and communicates with the exhaust chamber (23).

5. A drying machine for display screen back panel according to claim 4, characterized in that: The cylinder body (50) is provided with a cylinder cover structure detachably connected to the machine body (10), and the cylinder cover structure comprises: A machine cover (49) detachably connected to the machine body (10); A loading rack (61) is installed below the machine cover (49) and is able to enter the cylinder (50); An air bleed structure (62) is installed above the engine cover (49); The loading rack (61) comprises a base rod (610) having one end fixedly connected to the machine cover (49) and at least two semicircular filter screens (611) hinged to the base rod (610), each semicircular filter screen (611) being fixedly connected to a plurality of elastic clips (612), and a lifting rod (613) which is controlled by the air bleed structure (62) and has one end hinged to the semicircular filter screen (611) and is movable in a lifting manner on the machine cover (49).

6. A drying machine for display screen back panel according to claim 5, characterized in that: The air entraining structure (62) comprises: The air induction chamber (620) is provided with at least two air induction chambers (621) and a driving chamber (622); A piston plate (623) is slidably connected in the air inlet chamber (621), and a piston spring (624) is connected between the piston plate (623) and the air inlet chamber (621); A piston rod (625) is connected to the piston plate (623) and has one end extending upward and moving in the driving chamber (622); A worm (626) rotatably connected to the driving chamber (622) and capable of being controlled to rotate by a motor (626a); A worm wheel (627) is rotatably connected to the driving chamber (622) and cooperates with the worm (626); A driving gear (628) is coaxially connected to the worm gear (627) via a rotating shaft; A driving rack (629) is integrally formed on the piston rod (625) and meshes with the driving gear (628); The induction gas (620) is provided with a one-way air inlet valve (620a) and a one-way air outlet valve (620b) which are in communication with the induction gas cavity (621); the one-way air outlet valve (620b) is in communication with the air collecting cavity (311) via an air pipe (620c); One end of the lifting rod (613) is extended and enters the air inlet chamber (621) to be connected to the piston plate (623).

7. A drying machine for display screen back panel according to claim 5 or 6, characterized in that: A flow guide structure (7) is also provided in the cylinder (50), an exhaust passage (8) communicating with the third exhaust port (320) is formed in the machine body (10), and a force-bearing impeller (80) for driving the flow guide structure (7) to move is rotatably connected in the exhaust passage (8).

8. A display screen drying machine according to claim 7, characterized in that: The flow guiding structure (7) comprises: A first rotating disk (70) connected to the force-bearing impeller (80) via a transmission shaft (71); A first eccentric opening (72) is provided on the first rotating disk (70) and is used to discharge hot air in the cylinder (50) to the exhaust chamber (23); A second eccentric opening (73) is provided on the first rotating disk (70); The second rotating disk (74) is coaxially arranged at the second eccentric opening (73), and mutually matching limiting ribs (740) and limiting grooves are provided on the matching surfaces of the second rotating disk (74) and the second eccentric opening (73); A driven gear (75) is coaxially connected to the second rotating disk (74) via a transmission shaft (750); The second rotating disk (74) is provided with a flow guide portion (76), and the inner wall of the cylinder (50) is provided with a gear ring (77) meshing with the driven gear (75).

9. A drying machine for display screen back panel according to claim 8, characterized in that: The flow guide portion (76) comprises: A flow guide frame (760) is mounted on the second rotating disk (74) and has an air flow channel (761) extending therethrough; A flow guide (762) is installed in the air flow channel (761); Wherein, a flow guide surface (763) is formed on the outer wall of the flow guide frame (760).

10. A drying machine for display screen back panel according to claim 9, characterized in that: The channel diameter of the airflow channel (761) gradually decreases in the airflow direction, and the cross-sectional width of the flow guide (762) gradually decreases in the airflow direction.

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