A uniformity control device for electrostatic spraying of a television back panel

Abstract

The present application relates to the technical field of electrostatic spraying of TV back panels, and particularly relates to a uniformity control device for electrostatic spraying of TV back panels, comprising a spraying box, a bottom plate fixedly connected between the two sides of the inner cavity of the spraying box, and a fixed plate fixedly connected to one side of the top of the bottom plate, the present application is designed in cooperation with the clamping assembly and the pressing assembly, when the back panel is placed between the two clamping plates, the first spring continuously applies a lateral clamping force through the first sliding block, so that the clamping plate always adheres to the side edge of the back panel, the pressing plate slides along the second sliding groove through the second sliding block under the action of the second spring, and a flexible auxiliary pressing force is applied from the front, this fixing mode can not only adapt to back panels of different sizes, but also effectively absorb the slight vibration generated during the spraying process, so as to ensure that the workpiece remains absolutely stable during the entire spraying period, and create a prerequisite for uniform spraying.

Description

Technical Field

[0001] This invention relates to the field of electrostatic spraying technology for television back panels, and in particular to a device for controlling the uniformity of electrostatic spraying on television back panels. Background Technology

[0002] In the television manufacturing industry, the back panel is a key structural component that carries internal components and decorative appearance. The quality of its surface coating directly affects the product's appearance, corrosion resistance, and service life. Electrostatic spraying technology has become the mainstream process for surface treatment of television back panels due to its outstanding advantages such as high paint utilization, good coating uniformity, strong adhesion, and environmental protection and energy saving. However, in actual mass production, the uniformity control of electrostatic spraying of back panels still faces a series of complex technical challenges.

[0003] Firstly, television back panels are typically thin-walled, large-area structures, mostly made of metal or engineering plastics. During the spraying process, improper clamping can easily cause them to wobble or deform. Traditional mechanical clamping methods often use rigid fixation, making precise control of clamping force difficult. Insufficient clamping force allows the workpiece to shift under high-voltage electrostatic spraying conditions due to airflow impact; excessive clamping force can cause localized deformation or surface indentations in the thin-walled back panel, directly affecting product appearance quality and assembly accuracy. Workpiece instability directly leads to fluctuations in spraying distance, resulting in uneven coating thickness distribution, particularly noticeable at edges and corners. Secondly, currently... The movement control of spray guns with spraying devices has obvious limitations. Conventional designs often use fixed spray guns or simple unidirectional reciprocating mechanisms, which make it difficult to achieve uniform and even coverage of the entire surface of the back panel. Fixed spray guns have obvious spraying dead zones, while simple moving mechanisms often have uneven speeds and unstable strokes, resulting in uneven thickness stripes in the overlapping areas of the spray trajectory. This is especially true in complex curved areas such as the edges of the back panel, the grooves of the reinforcing ribs, and around the mounting holes. Traditional spray guns cannot maintain a constant spraying distance and angle, which easily leads to insufficient spraying or paint accumulation, seriously affecting coating quality and product yield. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a device for controlling the uniformity of electrostatic spraying on the back panel of a television set.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a uniformity control device for electrostatic spraying of a television back panel, comprising a spraying box, a base plate fixedly connected between the two sides of the inner cavity of the spraying box, a fixing plate fixedly connected to one side of the top of the base plate, a clamping assembly provided on the side of the fixing plate near the spraying plate, the clamping assembly including a first sliding groove, the first sliding groove being formed on both sides of the surface of the fixing plate, a first spring fixedly connected inside the first sliding groove, a first slider fixedly connected to the side of each of the two first springs that are close to each other, a clamping plate fixedly connected to the side of the first slider that is away from the first sliding groove, a pressing assembly provided on the side of the two clamping plates that are close to each other, a sliding assembly provided on the top of the base plate that is away from the fixing plate, a material storage assembly provided on the top of the base plate, and a collecting assembly provided at the bottom of the inner cavity of the spraying box.

[0006] As a preferred embodiment of the present invention, the pressing assembly includes a pressing plate and a second sliding groove. The pressing plate is fixedly connected to the bottom of two clamping plates on a similar side. The two second sliding grooves are opened on a similar side of the two clamping plates. A second spring is fixedly connected inside the second sliding groove. A second slider is fixedly connected to the side of the second spring away from the second sliding groove. The pressing plate is fixedly connected to the side of the two second sliders that are similar to each other.

[0007] As a preferred embodiment of the present invention, the sliding assembly includes a sliding groove and a drive box. A reciprocating threaded rod is rotatably connected between the two sides of the inner cavity of the sliding groove. A threaded sleeve is threadedly connected to the surface of the reciprocating threaded rod. A spray plate is fixedly connected to the top of the threaded sleeve. The drive box is fixedly connected to one side of the base plate. A motor is fixedly connected inside the drive box. The end of the reciprocating threaded rod away from the sliding groove passes through the sliding groove and the drive box in sequence and extends into the interior of the drive box. The end of the reciprocating threaded rod extending into the interior of the drive box is fixedly connected to the output shaft of the motor.

[0008] As a preferred embodiment of the present invention, the material storage assembly includes a material storage box and a discharge pipe. The material storage box is fixedly connected to the top of the base plate, and a feed pipe is fixedly connected to the top of the material storage box. A sealing cap is threadedly connected to the top of the feed pipe. A guide hose is fixedly connected inside the material storage box, and a solenoid valve is fixedly connected to the surface of the guide hose. The end of the guide hose away from the material storage box extends to the surface of the spray plate. The discharge pipe is fixedly connected to the surface of the spray plate near the fixed plate, and the end of the guide hose near the discharge pipe is fixedly connected to the discharge pipe.

[0009] As a preferred embodiment of the present invention, a plurality of nozzles are fixedly connected to the surface of the discharge pipe, a third groove is provided on the surface of the nozzles, a third slider is slidably connected inside the third groove, a sealing cover is fixedly connected to the side of the third slider away from the third groove, and a plurality of spray nozzles are provided on the surface of the sealing cover.

[0010] As a preferred embodiment of the present invention, the collection component includes a collection port and a fourth slide groove. The collection port is opened on the surface of the base plate, and the fourth slide groove is opened at the bottom of the inner cavity of the spray box. A fourth slider is slidably connected inside the fourth slide groove, and a storage box is fixedly connected to the top of the fourth slider.

[0011] Compared with the prior art, the beneficial effects that this invention can achieve are: 1. This invention, through the coordinated design of the clamping and pressing components, achieves elastic adaptive clamping and multi-point stable support for the back panel of a television set. This fundamentally eliminates the problem of uneven thickness caused by workpiece shaking during the spraying process. When the back panel is placed between the two clamping plates, the first spring applies a continuous lateral clamping force through the first slider, ensuring that the clamping plates always fit against the side of the back panel. At the same time, the pressure plate at the bottom of the clamping plates supports the bottom of the back panel, and the pressing plate slides along the second groove through the second slider under the action of the second spring, applying a flexible auxiliary pressing force from the front. This three-dimensional elastic fixing method of side clamping, bottom support, and front pressing can not only adapt to back panels of different sizes but also effectively absorb the minor vibrations generated during the spraying process, ensuring that the workpiece remains absolutely stable throughout the entire spraying cycle and creating a prerequisite for uniform spraying.

[0012] 2. This invention achieves uniform reciprocating linear motion of the nozzle through the precision transmission of the sliding component. Combined with the stable feeding of the material storage component, it ensures uniform coverage of the spraying trajectory and continuous and stable paint supply. The motor drives the reciprocating threaded rod to rotate, which in turn drives the threaded sleeve and the spraying plate to move back and forth at a uniform speed along the sliding groove. This allows the nozzle fixed on the spraying plate to sweep across the entire surface of the back plate at a constant speed, eliminating the uneven spraying speed caused by manual operation or simple movement. At the same time, the solenoid valve precisely controls the paint delivery of the guide hose, ensuring that the nozzle always receives a stable and continuous paint supply during the reciprocating motion, thus guaranteeing the uniformity and consistency of the spraying quality from the source.

[0013] 3. This invention, through the integration of an adjustable sealing cover and a collection component on the spray head, achieves precise constraint of the spraying area and targeted recovery of excess paint, significantly improving paint utilization and equipment cleanliness. The sealing cover slides within a third groove via a third slider, allowing adjustment of its position according to the actual height of the back plate. This ensures the spray nozzle is precisely aligned with the spraying area, effectively constraining the spraying range and preventing paint splashing and diffusion. Excess paint that exceeds the edge of the back plate or bounces back during spraying falls into a collection box through a collection port on the bottom plate. The collection box can be easily pulled out for cleaning via a fourth slider along a fourth groove. This design not only significantly reduces paint waste and lowers production costs but also prevents paint buildup on the inner wall of the spray box, reducing the workload of equipment cleaning and maintenance, thus achieving a dual improvement in environmental protection and economic benefits.

[0014] 4. This invention, through its modular design of the overall structure, enables the independent operation and coordinated cooperation of each functional unit, greatly improving the maintainability and ease of operation of the equipment. The clamping component, sliding component, storage component, and collection component all adopt a modular layout. Each component is both independent and closely coordinated. When a component needs maintenance or replacement, it is not necessary to disassemble the entire device; only the module needs to be operated, which significantly shortens the equipment downtime. At the same time, the removable and closed cover design on the top of the storage box facilitates paint replenishment and box cleaning; the pull-out design of the storage box makes the cleaning of leftover materials simple and quick, significantly improving the convenience and efficiency of daily operation.

[0015] 5. This invention, through the combined application of a multi-level elastic buffer structure and a precision guiding mechanism, achieves non-destructive clamping of the back panel and smooth operation of the spraying process, significantly extending the service life of the equipment and ensuring product yield. The first spring in the clamping assembly and the second spring in the pressing assembly constitute a two-level elastic buffer system, ensuring sufficient clamping force while avoiding workpiece surface indentations or deformation that may be caused by rigid clamping. The precise fit between the reciprocating threaded rod and the threaded sleeve in the sliding assembly, combined with the guiding effect of the sliding groove, ensures the smoothness of the spray plate movement and the accuracy of the trajectory. The sliding adjustment structure of the nozzle cover allows it to accurately adapt to back panels of different specifications, avoiding spraying dead angles. The comprehensive application of these precision guiding and buffering structures effectively reduces wear and impact during equipment operation, extends the service life of core components, and ensures a high first-pass yield of products. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the spray box structure of the present invention; Figure 2 This is a schematic diagram of the structure of the fixing plate of the present invention; Figure 3 This is a schematic diagram of the structure of the second slide groove of the present invention; Figure 4This is a schematic diagram of the structure of the storage box of the present invention; Figure 5 This is a schematic diagram of the sliding groove structure of the present invention; Figure 6 This is a schematic diagram of the structure of the third groove of the present invention; Figure 7 This is a schematic diagram of the structure of the storage box of the present invention; Figure 8 This is a schematic diagram of the structure of the fourth slide groove of the present invention.

[0017] The components include: 1. Spraying box; 11. Base plate; 12. Fixing plate; 20. First slide groove; 21. First spring; 22. First slider; 23. Clamping plate; 30. Pressure plate; 31. Second slide groove; 32. Second spring; 33. Second slider; 34. Pressing plate; 40. Sliding groove; 41. Reciprocating threaded rod; 42. Threaded sleeve; 43. Painted plate; 44. Drive box; 45. Motor; 50. Storage bin; 51. Feed pipe; 52. Sealing cover; 53. Guide hose; 54. Solenoid valve; 55. Discharge pipe; 60. Spray nozzle; 61. Third chute; 62. Third slider; 63. Enclosure; 64. Spray nozzle; 70. Collection port; 71. Fourth chute; 72. Fourth slider; 73. Storage box. Detailed Implementation

[0018] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0019] Example: Figure 1 , Figure 2 and Figure 3As shown, a uniformity control device for electrostatic spraying of a television back panel includes a spraying box 1. A base plate 11 is fixedly connected between the two sides of the inner cavity of the spraying box 1. A fixing plate 12 is fixedly connected to one side of the top of the base plate 11. A clamping assembly is provided on the side of the fixing plate 12 near the spraying plate. The clamping assembly includes a first slide groove 20, which is formed on both sides of the surface of the fixing plate 12. A first spring 21 is fixedly connected inside the first slide groove 20. A first slider 22 is fixedly connected to the side of the two first springs 21 that are close to each other. A clamping plate 23 is fixedly connected to the side of the first slider 22 that is away from the first slide groove 20. The two clamping plates 23 are close to each other. A pressing component is provided on one side of the base plate 11, a sliding component is provided on the top side of the base plate 11 away from the fixed plate 12, a material storage component is provided on the top of the base plate 11, and a collection component is provided at the bottom of the inner cavity of the spray box 1. The pressing component includes a pressing plate 30 and a second slide groove 31. The pressing plate 30 is fixedly connected to the bottom of the two clamping plates 23 on the same side. The two second slide grooves 31 are opened on the same side of the two clamping plates 23. A second spring 32 is fixedly connected inside the second slide groove 31. A second slider 33 is fixedly connected to the side of the second spring 32 away from the second slide groove 31. A pressing plate 34 is fixedly connected to the side of the two second sliders 33 that are close to each other.

[0020] refer to Figure 1 , Figure 2 and Figure 3 As shown, the device is in standby mode, the inside of the spray box 1 is clean, the collection port 70 on the base plate 11 is unobstructed, the clamping plates 23 are in the initial position close to each other under the action of the first spring 21, and the pressing plate 34 is in the extended state under the action of the second spring 32. The workpiece is installed and clamped. The operator vertically places the back panel of the TV between the two clamping plates 23. The side of the back panel pushes the clamping plates 23 open. The clamping plates 23 drive the first slider 22 to slide along the first slide groove 20, compressing the first spring 21. The elastic restoring force generated by the first spring 21 causes the clamping plates 23 to adaptively clamp the back panel from both sides. At the same time, the bottom of the back panel falls onto the pressing plate 30, and its front pushes the pressing plate 34 to compress the second spring 32. The second slider 33 slides along the second slide groove 31 for guidance. The elastic force of the second spring 32 causes the pressing plate 34 to apply a flexible auxiliary clamping force from the front. After this, the back panel is stably fixed.

[0021] refer to Figure 2 , Figure 4 and Figure 5As shown, the sliding assembly includes a sliding groove 40 and a drive box 44. A reciprocating threaded rod 41 is rotatably connected between the two sides of the inner cavity of the sliding groove 40. A threaded sleeve 42 is threadedly connected to the surface of the reciprocating threaded rod 41. A spray plate 43 is fixedly connected to the top of the threaded sleeve 42. The drive box 44 is fixedly connected to one side of the base plate 11. A motor 45 is fixedly connected inside the drive box 44. The end of the reciprocating threaded rod 41 away from the sliding groove 40 passes through the sliding groove 40 and the drive box 44 in sequence and extends into the interior of the drive box 44. The end of the reciprocating threaded rod 41 extending into the interior of the drive box 44 is fixedly connected to the output shaft of the motor 45.

[0022] refer to Figure 2 , Figure 4 and Figure 5 As shown, in the sliding assembly, the spray plate 43 is located at the starting end of the sliding groove 40. When the spraying operation is in progress, the motor 45 is started, and the motor 45 drives the reciprocating threaded rod 41 to rotate. The rotation of the reciprocating threaded rod 41 is converted into the linear reciprocating motion of the threaded sleeve 42, which drives the spray plate 43 to move back and forth at a constant speed along the sliding groove 40.

[0023] refer to Figure 2 and Figure 4 As shown, the material storage assembly includes a material storage bin 50 and a discharge pipe 55. The material storage bin 50 is fixedly connected to the top of the base plate 11. A feed pipe 51 is fixedly connected to the top of the material storage bin 50, and a sealing cap 52 is threadedly connected to the top of the feed pipe 51. A guide hose 53 is fixedly connected inside the material storage bin 50, and a solenoid valve 54 is fixedly connected to the surface of the guide hose 53. One end of the guide hose 53 away from the material storage bin 50 extends to the surface of the spray plate 43. The discharge pipe 55 is fixedly connected to the base plate 11. The material guide hose 53 is fixedly connected to the surface of the spray plate 43 near the fixed plate 12. One end of the material guide hose 53 near the discharge pipe 55 is fixedly connected to the discharge pipe 55. Several nozzles 60 are fixedly connected to the surface of the discharge pipe 55. A third groove 61 is opened on the surface of the nozzle 60. A third slider 62 is slidably connected inside the third groove 61. A sealing cover 63 is fixedly connected to the side of the third slider 62 away from the third groove 61. Several spray nozzles 64 are opened on the surface of the sealing cover 63.

[0024] refer to Figure 2 and Figure 4As shown, the sealing cover 52 is screwed onto the top of the feed pipe 51, the solenoid valve 54 is in the closed state, and the sealing cover 63 on the nozzle 60 can be adjusted to a suitable position by sliding the third slider 62 along the third slide groove 61 according to the height of the back plate to be sprayed, so that the spray nozzle 64 is aligned with the target spraying area. The solenoid valve 54 is opened, and the paint in the storage tank 50 is transported to the discharge pipe 55 through the guide hose 53, and finally sprayed evenly from the spray nozzle 64 on the nozzle 60. The uniform reciprocating motion of the spray plate 43 makes the nozzle 60 evenly sweep across the workpiece surface with the entire width of the back plate. The sealing cover 63 effectively constrains the spraying range and prevents paint splashing. During the spraying process, the back plate remains stable under the multiple elastic constraints of the clamping component and the pressing component, ensuring a constant spraying distance and uniform coating thickness.

[0025] refer to Figure 1 and Figure 8 As shown, the collection assembly includes a collection port 70 and a fourth slide 71. The collection port 70 is opened on the surface of the base plate 11, and the fourth slide 71 is opened at the bottom of the inner cavity of the spray box 1. A fourth slider 72 is slidably connected inside the fourth slide 71, and a storage box 73 is fixedly connected to the top of the fourth slider 72.

[0026] refer to Figure 1 and Figure 8 As shown, the collection box 73 is pushed into the bottom of the spray box 1 along the fourth slide groove 71 by the fourth slider 72, and is located directly below the collection port 70. During the spraying process, excess paint that exceeds the edge of the back plate or bounces off the surface of the workpiece falls downward under the action of gravity and falls into the collection box 73 below through the collection port 70 on the bottom plate 11 for collection.

[0027] Working principle: Before use: Refer to Figure 1 , Figure 2 and Figure 4 As shown, the device is in standby mode, the inside of the spray box 1 is clean, the collection port 70 on the bottom plate 11 is unobstructed, the clamping plates 23 are in the initial position close to each other under the action of the first spring 21, the pressing plate 34 is in the extended state under the action of the second spring 32, in the sliding assembly, the spray plate 43 is located at the starting end of the sliding groove 40, in the material storage assembly, the material storage box 50 has been filled with sufficient paint, the sealing cover 52 is tightened on the top of the feed pipe 51, the solenoid valve 54 is in the closed state, the sealing cover 63 on the nozzle 60 can be adjusted to a suitable position by sliding along the third slide groove 61 through the third slider 62 according to the height of the back plate to be sprayed, so that the spray nozzle 64 is aligned with the target spraying area, and the storage box 73 is pushed into the bottom of the spray box 1 by the fourth slider 72 along the fourth slide groove 71, located directly below the collection port 70.

[0028] When using: Refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, during workpiece installation and clamping, the operator vertically places the TV back panel between two clamping plates 23. The clamping plates 23 are pushed open from the side of the back panel, causing the clamping plates 23 to drive the first slider 22 to slide along the first slide groove 20, compressing the first spring 21. The elastic restoring force generated by the first spring 21 causes the clamping plates 23 to adaptively clamp the back panel from both sides. At the same time, the bottom of the back panel falls onto the pressure plate 30, and its front pushes the pressing plate 34 to compress the second spring 32. The second slider 33 slides along the second slide groove 31 for guidance. The elastic force of the second spring 32 causes the pressing plate 34 to apply a flexible auxiliary clamping force from the front. After this, the back panel is stably fixed. When the spraying operation is performed, the motor 45 is started. The motor 45 drives the reciprocating threaded rod 41 to rotate, and the rotation of the reciprocating threaded rod 41 is converted into the linear motion of the threaded sleeve 42. The reciprocating motion drives the spray plate 43 to move back and forth at a constant speed along the sliding groove 40. At the same time, the solenoid valve 54 is opened, and the paint in the storage box 50 is transported to the discharge pipe 55 through the guide hose 53. Finally, it is evenly sprayed out from the spray nozzle 64 on the nozzle 60. The uniform reciprocating motion of the spray plate 43 makes the nozzle 60 evenly sweep across the workpiece surface with the entire width of the back plate. The sealing cover 63 effectively constrains the spraying range and prevents paint from splashing. During the spraying process, the back plate remains stable under the multiple elastic constraints of the clamping component and the pressing component, ensuring a constant spraying distance, uniform coating thickness, and recovery of excess material. During the spraying process, excess paint that exceeds the edge of the back plate or bounces off the workpiece surface falls downward under the action of gravity and falls into the collection box 73 below through the collection port 70 on the bottom plate 11 for centralized collection.

[0029] After use: Reference Figure 1 , Figure 2 and Figure 4 As shown, after the spraying is completed, the solenoid valve 54 and motor 45 are closed. After the nozzle 60 stops discharging, the operator removes the sprayed back plate from between the clamping plates 23. The clamping plates 23 automatically reset under the action of the first spring 21, and the pressing plate 34 resets under the action of the second spring 32. If it is necessary to clean up the recycled paint, the collection box 73 can be pulled out along the fourth slide 71, the collected residual material can be poured out, and then pushed back in. The device returns to the initial standby state and waits for the next spraying operation.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A device for controlling the uniformity of electrostatic spraying on the back panel of a television set, comprising a spraying box (1), characterized in that, A base plate (11) is fixedly connected between the two sides of the inner cavity of the spray box (1). A fixing plate (12) is fixedly connected to one side of the top of the base plate (11). A clamping assembly is provided on the side of the fixing plate (12) near the spray plate. The clamping assembly includes a first slide groove (20). The first slide groove (20) is opened on both sides of the surface of the fixing plate (12). A first spring (21) is fixedly connected inside the first slide groove (20). A first slider (22) is fixedly connected to the side of the two first springs (21) that are close to each other. A clamping plate (23) is fixedly connected to the side of the first slider (22) that is away from the first slide groove (20). A pressing assembly is provided on the side of the two clamping plates (23) that are close to each other. A sliding assembly is provided on the side of the top of the base plate (11) that is away from the fixing plate (12). A material storage assembly is provided on the top of the base plate (11). A collection assembly is provided at the bottom of the inner cavity of the spray box (1).

2. The uniformity control device for electrostatic spraying of a television back panel according to claim 1, characterized in that, The pressing assembly includes a pressing plate (30) and a second slide groove (31). The pressing plate (30) is fixedly connected to the bottom of the two clamping plates (23) on the same side. The two second slide grooves (31) are opened on the same side of the two clamping plates (23). A second spring (32) is fixedly connected inside the second slide groove (31). A second slider (33) is fixedly connected to the side of the second spring (32) away from the second slide groove (31). A pressing plate (34) is fixedly connected to the side of the two second sliders (33) that are close to each other.

3. The uniformity control device for electrostatic spraying of a television back panel according to claim 1, characterized in that, The sliding assembly includes a sliding groove (40) and a drive box (44). The sliding groove (40) is located on the top of the base plate (11) away from the fixed plate (12). A reciprocating threaded rod (41) is rotatably connected between the two sides of the inner cavity of the sliding groove (40). A threaded sleeve (42) is threadedly connected to the surface of the reciprocating threaded rod (41). A spray plate (43) is fixedly connected to the top of the threaded sleeve (42). The drive box (44) is fixedly connected to one side of the base plate (11). A motor (45) is fixedly connected inside the drive box (44). One end of the reciprocating threaded rod (41) away from the sliding groove (40) passes through the sliding groove (40) and the drive box (44) in sequence and extends into the interior of the drive box (44). One end of the reciprocating threaded rod (41) extending into the interior of the drive box (44) is fixedly connected to the output shaft of the motor (45).

4. The uniformity control device for electrostatic spraying of a television back panel according to claim 1, characterized in that, The material storage assembly includes a material storage box (50) and a discharge pipe (55). The material storage box (50) is fixedly connected to the top of the base plate (11). A feed pipe (51) is fixedly connected to the top of the material storage box (50). A sealing cap (52) is threadedly connected to the top of the feed pipe (51). A guide hose (53) is fixedly connected inside the material storage box (50).

5. The uniformity control device for electrostatic spraying of a television back panel according to claim 4, characterized in that, A solenoid valve (54) is fixedly connected to the surface of the material guide hose (53). The end of the material guide hose (53) away from the storage box (50) extends to the surface of the spray plate (43). The discharge pipe (55) is fixedly connected to the surface of the spray plate (43) near the fixed plate (12). The end of the material guide hose (53) near the discharge pipe (55) is fixedly connected to the discharge pipe (55).

6. The uniformity control device for electrostatic spraying of a television back panel according to claim 5, characterized in that, The surface of the discharge pipe (55) is fixedly connected with several nozzles (60), the surface of the nozzles (60) is provided with a third groove (61), the interior of the third groove (61) is slidably connected with a third slider (62), the side of the third slider (62) away from the third groove (61) is fixedly connected with a sealing cover (63), the surface of the sealing cover (63) is provided with several spray nozzles (64).

7. The uniformity control device for electrostatic spraying of a television back panel according to claim 1, characterized in that, The collection assembly includes a collection port (70) and a fourth chute (71). The collection port (70) is located on the surface of the base plate (11), and the fourth chute (71) is located at the bottom of the inner cavity of the spray box (1).

8. The uniformity control device for electrostatic spraying of a television back panel according to claim 7, characterized in that, The fourth slide (71) is slidably connected to the inside of the fourth slide (72), and the top of the fourth slide (72) is fixedly connected to the storage box (73).

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