Automobile shell painting equipment

Abstract

The utility model relates to the technical field of automobile shell paint spraying, in particular to automobile shell paint spraying equipment which comprises an equipment body. The lower transverse plate is fixedly connected to the lower end of the interior of the equipment body; the upper transverse plate is fixedly connected to the upper end of the interior of the equipment body; the moving mechanism is arranged between the lower transverse plate and the upper transverse plate and used for moving the vehicle shell left and right; and the paint spraying mechanism is arranged on the upper transverse plate and used for spraying paint on the vehicle shell. Under the driving of the first servo motor, the lead screw can drive the threaded sleeve to move left and right, and the threaded sleeve drives the paint spraying platform to move left and right at a constant speed, so that a vehicle shell placed on the paint spraying platform can pass through the spray gun at a constant speed, and meanwhile, the adjusting mechanism and the spray gun can move front and back under the driving of the linear motor; and the paint spraying uniformity of the vehicle shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle shell spray painting, in particular to a vehicle shell painting device. Background Art

[0002] In addition to providing protection for the internal components of electric vehicles, the car body can also increase the overall aesthetics of the electric vehicle. Therefore, most cars are equipped with a car body, and the appearance of the car body is achieved by spraying paint. Spraying the car body with paint can effectively prevent the body frame from rusting due to rain.

[0003] Traditionally, the painting of automobile shells is done manually. Due to the long time of workers operating the paint spraying, the labor consumption is large, the spraying efficiency is reduced, and the uniformity of the workers' spraying is poor, which affects the appearance of the vehicle. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a car body painting device to solve the technical problems that the existing car body spraying is carried out manually, the workers spend a lot of labor, the spraying efficiency is reduced, and the workers' spraying uniformity is poor due to the long-term operation of the workers.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A vehicle shell painting device, comprising:

[0007] Equipment body;

[0008] A lower horizontal plate, the lower horizontal plate being fixedly connected to the inner lower end of the device body;

[0009] An upper horizontal plate, the upper horizontal plate being fixedly connected to the inner upper end of the device body;

[0010] A moving mechanism, the moving mechanism is arranged between the lower horizontal plate and the upper horizontal plate and is used for moving the vehicle shell left and right;

[0011] A paint spraying mechanism, which is arranged on the upper horizontal plate and is used for spraying paint on the vehicle shell;

[0012] An adsorption mechanism, which is arranged at the middle of the inner bottom wall of the equipment body and is used to adsorb paint mist;

[0013] A spray gun is arranged at the bottom of the paint spraying mechanism and corresponds to the moving mechanism.

[0014] Furthermore, a sealing door for taking in and out the vehicle shell is hinged at the right end of the device body.

[0015] Furthermore, the moving mechanism comprises:

[0016] Two guide rails, the two guide rails are symmetrically fixedly connected to the front and rear ends of the upper surface of the lower horizontal plate;

[0017] A paint spraying platform, wherein a dovetail block is fixedly connected to the lower surface of the paint spraying platform and at a position corresponding to the guide rail, and the paint spraying platform is slidably matched to the top of the guide rail through the dovetail block;

[0018] A threaded sleeve, the top of which is fixedly connected to the middle of the lower surface of the paint spraying platform;

[0019] A first servo motor, wherein the first servo motor is fixedly connected to the left side of the device body;

[0020] The left end of the screw rod passes through the left inner wall of the equipment body through the rotating shaft and extends to the outside to be fixedly connected to the output end of the first servo motor. The right end of the screw rod is threaded through the threaded sleeve and rotated to fit the right end inner wall of the equipment body through the bearing.

[0021] Furthermore, the paint spraying mechanism comprises:

[0022] A linear motor, wherein the linear motor is slidably matched with the upper surface of the upper horizontal plate;

[0023] A guide block, wherein the guide block is fixedly connected to the middle portion of the lower surface of the linear motor, and an end of the guide block away from the linear motor is arranged inside the upper horizontal plate;

[0024] A U-shaped plate, the U-shaped plate being fixedly connected to the lower surface of the guide block;

[0025] An adjusting mechanism is arranged inside the U-shaped plate.

[0026] Furthermore, a guide hole matched with the guide block is provided in the middle of the upper transverse plate, and the guide block is slidably matched inside the guide hole.

[0027] Furthermore, the regulating mechanism comprises:

[0028] a second servo motor, wherein the second servo motor is fixedly connected to one side of the U-shaped plate;

[0029] A bidirectional screw rod, one end of which passes through the inner wall of the U-shaped plate through a rotating shaft and extends to the outside to be fixedly connected to the output end of the second servo motor, and the other end of which is rotatably connected to the inner wall of the other side of the U-shaped plate through a bearing;

[0030] Two thread blocks, the two thread blocks are respectively threadedly matched with two ends of the bidirectional screw rod;

[0031] A guide rod, one end of which is fixedly connected to the inner wall of one side of the U-shaped plate, and the other end of which slides through the upper ends of the two threaded blocks in sequence and extends to the outside to be fixedly connected to the inner wall of the other side of the U-shaped plate;

[0032] Two connecting rods, the top ends of the two connecting rods are respectively hinged to the bottom ends of the corresponding threaded blocks;

[0033] The lifting plate is arranged below the connecting rod, and the two ends of the top of the lifting plate are respectively hinged to the bottom of the corresponding connecting rod.

[0034] Furthermore, the two connecting rods are in an inverted figure eight shape.

[0035] Furthermore, the middle portion of the lower surface of the lifting plate is fixedly connected to the upper surface of the spray gun.

[0036] Furthermore, the adsorption mechanism comprises:

[0037] A suction fan, the suction fan is fixedly connected to the middle part of the inner bottom wall of the equipment body;

[0038] Two pipelines, the two pipelines are fixedly connected through a three-way joint, and the other end of the three-way joint is fixedly connected to the suction end of the suction fan;

[0039] Two fixed shells, the middle parts of the bottom ends of the two fixed shells are respectively fixedly connected to the ends of the two pipes which are far away from each other.

[0040] Furthermore, the ends of the two pipes that are away from each other respectively penetrate the middle parts of the front and rear ends of the lower cross plate and extend upward, and both ends of the lower surface of the fixed shell are fixedly connected to the lower cross plate through fixing rods, and the upper surface of the fixed shell is flush with the upper surface of the paint spraying platform. The cross-section of the lower end of the fixed shell is an inverted isosceles trapezoid, and a filter is installed at the upper inner end of the fixed shell.

[0041] Beneficial effects of the utility model:

[0042] The utility model can drive the threaded sleeve to move left and right under the drive of the first servo motor, and the threaded sleeve drives the paint spraying platform to move left and right at a uniform speed, so that the vehicle shell placed on the paint spraying platform can pass through the spray gun at a uniform speed, and at the same time, the adjustment mechanism and the spray gun can be moved back and forth under the drive of the linear motor, thereby improving the uniformity of the vehicle shell paint spraying; the bidirectional threaded sleeve can drive the two threaded blocks to approach or move away from each other under the drive of the second servo motor, and at the same time, the bottom ends of the two connecting rods will drop and rise accordingly, thereby reducing and increasing the distance between the spray gun and the vehicle shell, which can not only ensure the uniformity of the vehicle shell paint spraying, but also save manpower and improve the paint spraying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a vehicle shell painting device;

[0045] Figure 2 It is a front cross-sectional schematic diagram of an embodiment of a vehicle shell painting device;

[0046] Figure 3 It is a left side cross-sectional schematic diagram of an embodiment of a vehicle shell painting device;

[0047] Figure 4 It is a three-dimensional schematic diagram of the connection between the adjustment mechanism and the spray gun of an embodiment of the automobile shell painting equipment.

[0048] Explanation of the symbols in the figure: 1. Equipment body; 101. Sealing door; 102. Lower horizontal plate; 103. Upper horizontal plate; 104. Guide hole; 2. Guide rail; 3. Paint spraying platform; 301. Dovetail block; 302. Threaded sleeve; 4. First servo motor; 401. Screw; 5. Linear motor; 501. Guide block; 502. U-shaped plate; 6. Second servo motor; 601. Bidirectional screw; 602. Threaded block; 603. Connecting rod; 604. Lifting plate; 7. Spray gun; 8. Fixed shell; 801. Pipeline; 802. Filter; 9. Suction fan. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0051] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0052] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0053] See also Figure 1-3 As shown, a car body painting device comprises: a device body 1; a lower transverse plate 102, which is fixedly connected to the lower end of the interior of the device body 1; an upper transverse plate 103, which is fixedly connected to the upper end of the interior of the device body 1; a moving mechanism, which is arranged between the lower transverse plate 102 and the upper transverse plate 103 and is used to move the car body left and right; a paint spraying mechanism, which is arranged on the upper transverse plate 103 and is used to spray paint on the car body; an adsorption mechanism, which is arranged at the middle of the inner bottom wall of the device body 1 and is used to adsorb paint mist; a spray gun 7, which is arranged at the bottom of the paint spraying mechanism and is connected to the moving mechanism The structure corresponds to the embodiment of the present invention; by placing the vehicle shell on the moving mechanism, and then the external controller controls the moving mechanism to move the vehicle shell from right to left at a uniform speed, and at the same time the paint spraying mechanism can adjust the height of the spray gun 7 under the control of the external controller, and finally the vehicle paint is evenly sprayed on the vehicle shell through the spray gun 7; a large amount of paint mist will be generated during the painting process of the spray gun 7, some of the paint mist adheres to the vehicle shell, and other paint mist is scattered in the equipment body 1. The adsorption mechanism controlled by the external controller can absorb the other scattered paint mist, so as to avoid the increase of the paint thickness of the vehicle shell and the scattering of the paint mist to the outside when the vehicle shell is taken out, causing environmental pollution.

[0054] Specifically, Figure 3 As shown, the right end of the equipment body 1 is hinged with a sealed door 101 for taking and placing the vehicle shell; the sealed door 101 can be opened manually or can be an electric door controlled by an external controller, mainly to prevent the paint mist in the equipment body 1 from spreading to the outside during the painting process.

[0055] Specifically, Figure 2-3The moving mechanism includes: two guide rails 2, which are symmetrically fixedly connected to the front and rear ends of the upper surface of the lower horizontal plate 102; a paint spraying platform 3, a dovetail block 301 is fixedly connected to the lower surface of the paint spraying platform 3 and the position corresponding to the guide rail 2, and the paint spraying platform 3 is slidably matched with the top of the guide rail 2 through the dovetail block 301; a threaded sleeve 302, the top of the threaded sleeve 302 is fixedly connected to the middle of the lower surface of the paint spraying platform 3; a first servo motor 4, the first servo motor 4 is fixedly connected to the left side of the equipment body 1; a screw rod 401, the left end of the screw rod 401 passes through the inner wall of the left side of the equipment body 1 through the rotating shaft and extends to the outside and is fixedly connected to the output end of the first servo motor 4 The right end thread of the screw rod 401 passes through the threaded sleeve 302 and rotates to fit the right end inner wall of the equipment body 1 through the bearing; when the car shell is placed on the paint spraying platform 3, the sealing door 101 is closed, and the first servo motor 4 is started by controlling the external controller. The first servo motor 4 can drive the screw rod 401 to rotate forward through the rotating shaft, and the screw rod 401 rotates and is threadedly transmitted with the threaded sleeve 302. Under the limitation of the dovetail block 301 and the guide rail 2, the threaded sleeve 302 can move to the left on the screw rod 401, and at the same time, the threaded sleeve 302 drives the paint spraying platform 3 to move to the left and the dovetail block 301 to move to the left on the guide rail 2, so that the car shell on the paint spraying platform 3 passes through the spray gun 7 at a uniform speed.

[0056] Specifically, Figure 2-4 As shown, the painting mechanism includes: a linear motor 5, which is slidably fitted on the upper surface of the upper horizontal plate 103; a guide block 501, which is fixedly connected to the middle of the lower surface of the linear motor 5, and the end of the guide block 501 away from the linear motor 5 is arranged inside the upper horizontal plate 103; a U-shaped plate 502, which is fixedly connected to the lower surface of the guide block 501; an adjusting mechanism, which is arranged inside the U-shaped plate 502; the linear motor 5 is controlled to move back and forth reciprocatingly by an external controller, and the linear motor 5 drives the U-shaped plate 502 to move back and forth through the guide block 501, so that the U-shaped plate 502 drives the adjusting mechanism to move back and forth.

[0057] Specifically, Figure 2-3 As shown, a guide hole 104 matching with the guide block 501 is provided in the middle of the upper horizontal plate 103, and the guide block 501 is slidably matched inside the guide hole 104; the guide block 501 can be limited and guided by the guide hole 104, so that the guide block 501 can slide back and forth in the guide hole 104.

[0058] Specifically, Figure 2-4As shown, the adjustment mechanism includes: a second servo motor 6, which is fixedly connected to one side of the U-shaped plate 502; a bidirectional screw rod 601, one end of which passes through the inner wall of the U-shaped plate 502 through a rotating shaft and extends to the outside to be fixedly connected to the output end of the second servo motor 6, and the other end of the bidirectional screw rod 601 is rotatably connected to the inner wall of the other side of the U-shaped plate 502 through a bearing; two threaded blocks 602, which are respectively threadedly matched at both ends of the bidirectional screw rod 601; a guide rod 605, one end of which is fixedly connected to the output end of the second servo motor 6 The ends of the guide rods 605 are fixedly connected to the inner wall of one side of the U-shaped plate 502, and the other end of the guide rod 605 slides through the upper ends of the two threaded blocks 602 in sequence and extends to the outside and is fixedly connected to the inner wall of the other side of the U-shaped plate 502; two connecting rods 603, the top ends of the two connecting rods 603 are respectively hinged to the bottom of the corresponding threaded blocks 602; the two connecting rods 603 are in an inverted figure eight shape; the lifting plate 604, the lifting plate 604 is arranged below the connecting rods 603, and the two ends of the top of the lifting plate 604 are respectively hinged to the bottom of the corresponding connecting rods 603; the lifting plate 604 is arranged below the connecting rods 603, and the two ends of the top of the lifting plate 604 are respectively hinged to the bottom of the corresponding connecting rods 603; The middle part of the lower surface of the plate 604 is fixedly connected to the upper surface of the spray gun 7; when the car shell moves to the left at a constant speed driven by the moving mechanism, the distance between the car shell and the spray gun 7 will change, which may be reduced or increased. At this time, under the control of the external controller, the second servo motor 6 can be made to rotate forward and reverse in time. When the second servo motor 6 rotates forward, the second servo motor 6 can drive the bidirectional screw rod 601 to rotate forward through the rotating shaft. Under the limitation and guidance of the guide rod 605, the two threaded blocks 602 can approach each other, and at the same time, the two threaded blocks 60 2 can drive the connecting rods 603 at their respective bottoms to move, so that the top ends of the two connecting rods 603 are close to each other. At this time, the bottom ends of the two connecting rods 603 can rotate around the hinge point on the lifting plate 604 and move downward, so that the lifting plate 604 and the spray gun 7 move downward, so that the distance between the spray gun 7 and the vehicle shell is reduced; conversely, the reverse rotation of the second servo motor 6 can make the two threaded blocks 602 move away from each other, so that the spray gun 7 moves upward, and the distance between the spray gun 7 and the vehicle shell is increased, so that the spray gun 7 can evenly spray paint on the vehicle shell.

[0059] Specifically, Figure 2-3As shown, the adsorption mechanism includes: a suction fan 9, which is fixedly connected to the middle part of the inner bottom wall of the equipment body 1; two pipes 801, which are fixedly connected to each other through a three-way joint, and the other end of the three-way joint is fixedly connected to the suction end of the suction fan 9; wherein the pipe 801 includes but is not limited to a plastic pipe; two fixed shells 8, the middle parts of the bottom ends of the two fixed shells 8 are respectively fixedly connected to the ends of the two pipes 801 away from each other; the ends of the two pipes 801 away from each other respectively pass through the middle parts of the front and rear ends of the lower cross plate 102 and extend to the top, the two ends of the lower surface of the fixed shell 8 are fixedly connected to the lower cross plate 102 through fixing rods, and the upper surface of the fixed shell 8 is flush with the upper surface of the paint spraying platform 3, and fixed. The cross-section of the lower end of the fixed shell 8 is an inverted isosceles trapezoid, and a filter screen 802 is installed at the upper end of the interior of the fixed shell 8; the filter screen 802 can be a nylon filter screen and a stainless steel filter screen; when the spray gun 7 starts to spray paint, the external controller can control the suction fan 9 to start, and the suction fan 9 exhausts air in the two fixed shells 8 through the three-way joint and the two pipes 801, so that a pressure difference is formed between the fixed shell 8 and the equipment body 1, so that the paint mist can be attracted into the fixed shell 8, and under the action of the filter screen 802, the paint mist is adsorbed on the filter screen 802, and the filter screen 802 can be snap-fitted into the fixed shell 8 by a buckle, or it can be fixed in the fixed shell 8 by screws, so that the filter screen 802 is easy to replace.

[0060] In summary, compared with the prior art, the vehicle shell painting has at least the following beneficial effects: under the drive of the first servo motor 4, the utility model can enable the screw rod 401 to drive the threaded sleeve 302 to move left and right, and the threaded sleeve 302 drives the paint spraying platform 3 to move left and right at a uniform speed, so that the vehicle shell placed on the paint spraying platform 3 can pass through the spray gun 7 at a uniform speed, and at the same time, under the drive of the linear motor 5, the adjustment mechanism and the spray gun 7 can move back and forth, thereby improving the uniformity of the vehicle shell painting; under the drive of the second servo motor 6, the bidirectional screw rod 601 can drive the two threaded blocks 602 to approach or move away from each other, and at the same time, the bottom ends of the two connecting rods 603 will drop and rise accordingly, thereby making the distance between the spray gun 7 and the vehicle shell smaller and larger, which can not only ensure the uniformity of the vehicle shell painting, but also improve the painting efficiency.

[0061] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A car body painting equipment, characterized in that: include: Device body (1); A lower transverse plate (102), the lower transverse plate (102) being fixedly connected to the inner lower end of the device body (1); An upper transverse plate (103), the upper transverse plate (103) being fixedly connected to the inner upper end of the device body (1); A moving mechanism, the moving mechanism is arranged between the lower transverse plate (102) and the upper transverse plate (103) and is used to move the vehicle shell leftward and rightward; A paint spraying mechanism, the paint spraying mechanism being arranged on the upper horizontal plate (103) and being used for spraying paint on the vehicle shell; An adsorption mechanism, the adsorption mechanism being arranged at the middle of the inner bottom wall of the device body (1) and being used for adsorbing paint mist; A spray gun (7), wherein the spray gun (7) is arranged at the bottom of the paint spraying mechanism and corresponds to the moving mechanism.

2. The automobile shell painting equipment according to claim 1, characterized in that: The right end of the equipment body (1) is hinged with a sealing door (101) for taking in and out the vehicle shell.

3. The automobile shell painting equipment according to claim 1, characterized in that: The moving mechanism comprises: Two guide rails (2), the two guide rails (2) being symmetrically fixedly connected to the front and rear ends of the upper surface of the lower transverse plate (102); A paint spraying platform (3), wherein a dovetail block (301) is fixedly connected to a position on the lower surface of the paint spraying platform (3) corresponding to the guide rail (2), and the paint spraying platform (3) is slidably matched to the top of the guide rail (2) through the dovetail block (301); A threaded sleeve (302), the top of which is fixedly connected to the middle of the lower surface of the paint spraying platform (3); A first servo motor (4), the first servo motor (4) being fixedly connected to the left side of the device body (1); A screw rod (401), the left end of which passes through the left inner wall of the device body (1) via a rotating shaft and extends to the outside to be fixedly connected to the output end of the first servo motor (4), and the right end of which passes through the threaded sleeve (302) via a bearing to rotate with the right inner wall of the device body (1).

4. The automobile shell painting equipment according to claim 1, characterized in that: The paint spraying mechanism comprises: A linear motor (5), the linear motor (5) being slidably fitted on the upper surface of the upper horizontal plate (103); A guide block (501), the guide block (501) being fixedly connected to the middle portion of the lower surface of the linear motor (5), and one end of the guide block (501) away from the linear motor (5) being arranged inside the upper horizontal plate (103); A U-shaped plate (502), wherein the U-shaped plate (502) is fixedly connected to the lower surface of the guide block (501); An adjustment mechanism is arranged inside the U-shaped plate (502).

5. The automobile shell painting equipment according to claim 4, characterized in that: A guide hole (104) matching with the guide block (501) is provided in the middle of the upper transverse plate (103), and the guide block (501) is slidably matched inside the guide hole (104).

6. The automobile shell painting equipment according to claim 4, characterized in that: The regulating mechanism comprises: a second servo motor (6), the second servo motor (6) being fixedly connected to one side of the U-shaped plate (502); A bidirectional screw rod (601), one end of which penetrates the inner wall of the U-shaped plate (502) through a rotating shaft and extends to the outside to be fixedly connected to the output end of the second servo motor (6), and the other end of which is rotatably connected to the inner wall of the other side of the U-shaped plate (502) through a bearing; Two threaded blocks (602), the two threaded blocks (602) are respectively threadedly engaged with two ends of the bidirectional screw rod (601); A guide rod (605), one end of which is fixedly connected to the inner wall of one side of the U-shaped plate (502), and the other end of which slides through the upper ends of the two threaded blocks (602) in sequence and extends to the outside to be fixedly connected to the inner wall of the other side of the U-shaped plate (502); Two connecting rods (603), the top ends of the two connecting rods (603) are respectively hinged to the bottom ends of the corresponding threaded blocks (602); A lifting plate (604) is arranged below the connecting rod (603), and two ends of the top of the lifting plate (604) are respectively hinged to the bottom of the corresponding connecting rod (603).

7. The automobile shell painting equipment according to claim 6, characterized in that: The two connecting rods (603) are in an inverted figure eight shape.

8. The automobile shell painting equipment according to claim 6, characterized in that: The middle portion of the lower surface of the lifting plate (604) is fixedly connected to the upper surface of the spray gun (7).

9. The automobile shell painting equipment according to claim 1, characterized in that: The adsorption mechanism comprises: A suction fan (9), the suction fan (9) is fixedly connected to the middle part of the inner bottom wall of the equipment body (1); Two pipelines (801), the two pipelines (801) are fixedly connected via a three-way joint, and the other end of the three-way joint is fixedly connected to the suction end of the suction fan (9); Two fixed shells (8), the middle parts of the bottom ends of the two fixed shells (8) are respectively fixedly connected to two pipes (801) away from one end of each other.

10. The automobile shell painting equipment according to claim 9, characterized in that: The ends of the two pipes (801) that are away from each other respectively penetrate the middle of the front and rear ends of the lower cross plate (102) and extend upward. Both ends of the lower surface of the fixed shell (8) are fixedly connected to the lower cross plate (102) through fixing rods. The upper surface of the fixed shell (8) is flush with the upper surface of the paint spraying platform (3). The cross-section of the lower end of the fixed shell (8) is an inverted isosceles trapezoid. A filter screen (802) is installed at the upper end of the interior of the fixed shell (8).

Images