Protective device for motor housing painting

Abstract

The invention discloses a protective device for painting a motor housing, comprising a housing, wherein a sealing mechanism is arranged inside the housing; the sealing mechanism comprises a top cover, a No. 2 rubber pad, and a vacuum pump; a convex plate is fixedly mounted on the bottom of the top cover, a No. 1 rubber pad is fixedly mounted on the bottom of the top cover, an outer wall of the No. 2 rubber pad is fixedly connected to an inner wall of the housing, the No. 2 rubber pad is movably sleeved on the convex plate, and the top cover is placed on the top of the housing, the convex plate is stuck on the inner side of the No. 2 rubber pad, and the vacuum pump is turned on to extract the gas in the housing from a connecting head and an air inlet pipe, so that the air pressure in the housing is lower than the external air pressure, and the higher external air pressure presses the top cover downward, so that the top cover presses the No. 1 rubber pad downward, so that the No. 1 rubber pad is more closely fitted to the top of the top housing, the sealing performance is further improved, and the purpose of preventing paint from splashing onto the clothes of operators is achieved through a completely sealed space.

Description

Technical Field

[0001] The invention relates to the technical field of protective devices for motor housing painting, in particular to a protective device for motor housing painting. Background Art

[0002] The outer surface of the motor needs to be painted, but the end of the motor and the motor shaft cannot be painted. Therefore, the end of the motor needs to be protected and the other parts of the motor must be fully painted. At the same time, most of the paint collides with the motor shell under the action of its own impact during spraying and splashes onto the operator, causing the operator to change clothes for washing after spraying, which is very troublesome;

[0003] The existing Chinese patent CN 214347324 U discloses a motor housing paint protection device, which is provided by placing the motor body to be painted on a lower limit shielding plate, and then arranging an upper limit shielding plate on the upper end thereof, and covering the protective cover on the workbench, so that the motor body to be painted is buckled in the protective cover, and the driving motor is started to rotate to drive the motor body to be painted to rotate, and at the same time, the operator uses a paint spray gun to paint the motor body through the paint spraying hole on the protective cover. The device effectively shields the upper and lower end cover surfaces and the shaft end of the motor body to be painted, realizes the painting of the surface of the motor body, has a simple structure, is easy to operate, and solves the problem that the motor end cover surface is difficult to handle when the paint is sprayed on the paint;

[0004] However, although the protective device for spraying paint on the motor housing is provided with a protective cover, a spray hole is opened on the protective cover for spraying, which easily causes the splashed paint to splash onto the operator from the spray hole, and the operator still needs to change clothes after spraying. Summary of the invention

[0005] The object of the present invention is to provide a protective device for painting a motor housing to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a protective device for painting a motor housing, comprising a housing, wherein a sealing mechanism is arranged inside the housing;

[0007] The sealing mechanism comprises a top cover, a No. 2 rubber pad, and a vacuum pump, a convex plate is fixedly installed on the bottom of the top cover, a No. 1 rubber pad is fixedly installed on the bottom of the top cover, the outer wall of the No. 2 rubber pad is fixedly connected to the inner wall of the shell, the No. 2 rubber pad is movably sleeved on the convex plate, the lower surface of the No. 1 rubber pad fits the upper surface of the shell, the outer wall of the vacuum pump is fixedly connected to the outer wall of the shell, an air inlet end of the vacuum pump is connected with an air inlet pipe, the outer wall of the right end of the air inlet pipe is fixedly connected to the inner wall of the shell, a connecting head is connected to the right end of the air inlet pipe, the left outer wall of the connecting head is fixedly connected to the left inner wall of the shell, a mounting frame is fixedly installed on the inner wall of the connecting head by bolts, and a filter is fixedly installed on the inner side of the mounting frame;

[0008] A rotating mechanism is fixedly installed on the bottom inner wall of the shell, a painting mechanism is fixedly installed on the right inner wall of the shell, and a placing mechanism is arranged on the top of the rotating mechanism.

[0009] According to the above technical solution, the rotating mechanism includes a servo motor, the bottom of the servo motor is fixedly connected to the inner wall of the outer shell, a worm is fixedly installed on the output end of the servo motor, a half gear is fixedly installed on the outer wall of the worm, the half gear is meshed with a No. 1 gear, a No. 1 rotating shaft is fixedly installed on the inner wall of the No. 1 gear, the bottom end of the No. 1 rotating shaft is rotatably connected to the bottom inner wall of the outer shell through a bearing, the No. 1 gear is meshed with a No. 2 gear, a No. 2 rotating shaft is fixedly installed on the inner wall of the No. 2 gear, the bottom end of the No. 2 rotating shaft is rotatably connected to the bottom inner wall of the outer shell through a bearing, and a support plate is fixedly installed on the top of the No. 2 rotating shaft.

[0010] According to the above technical scheme, the paint spraying mechanism includes a paint box, an L-shaped plate, and a worm gear. A boosting pump is provided on the top of the paint box through a conduit, and a hose is provided on the output end of the boosting pump. The outer wall of the hose is fixedly connected to the inner wall of the outer shell, and a nozzle is provided on the left end of the hose. The worm gear is meshed with a worm, and a No. 3 rotating shaft is fixedly installed on the inner wall of the worm gear. The right end of the No. 3 rotating shaft is rotatably connected to the right inner wall of the outer shell through a bearing, and a turntable is fixedly installed on the outer wall of the No. 3 rotating shaft. The left outer wall of the turntable is rotatably connected to a connecting rod through a pin, and one end of the connecting rod is rotatably connected to a sliding block through a pin. The right end of the L-shaped plate is fixedly connected to the right inner wall of the outer shell, and a guide groove is provided on the left outer wall of the L-shaped plate. The sliding block is slidably arranged in the guide groove, and the right outer wall of the nozzle is fixedly connected to the left outer wall of the sliding block.

[0011] According to the above technical solution, the placement mechanism includes a card slot and a placement rack. The card slot is located at the top of the support plate. A card block is fixedly installed at the bottom of the placement rack, and the card block is clamped in the card slot. An insertion rod is fixedly installed on the inner outer wall of the bottom of the placement rack. The motor to be painted is placed on the inner outer wall of the placement rack. A spring is fixedly installed on the inner outer wall of the top of the placement rack. A protective cover is fixedly installed on the bottom of the spring. The protective cover covers the top of the motor to be painted. A pull rod is fixedly installed on the top of the protective cover, and the pull rod movably passes through the top of the placement rack.

[0012] According to the above technical solution, an observation window is fixedly installed on the front side of the shell, and a control panel is fixedly installed on the front side of the shell.

[0013] According to the above technical solution, a supporting foot is fixedly installed on the bottom of the shell, and a shock-absorbing pad is fixedly installed on the bottom of the supporting foot.

[0014] According to the above technical solution, a handle is fixedly installed on the top of the top cover, and two handles are provided, which are respectively located on the left and right sides of the top of the top cover.

[0015] According to the above technical solution, the number of teeth of the first gear is twice the number of teeth of the half gear, and the number of teeth of the second gear is three times the number of teeth of the first gear.

[0016] According to the above technical solution, a liquid inlet pipe is connected to the top of the paint box, a liquid discharge pipe is connected to the right outer wall of the paint box, and a liquid discharge valve is fixedly installed on the right end of the liquid discharge pipe.

[0017] According to the above technical solution, a baffle is fixedly installed on the top of the pull rod, and the insertion rod movably penetrates the flange at the bottom of the motor to be painted.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0019] 1. The present invention places the top cover on the top of the housing, and the convex plate is stuck inside the No. 2 rubber pad. The vacuum pump is turned on to extract the gas in the housing from the connecting head and the air inlet pipe, so that the air pressure in the housing is lower than the outside air pressure. The higher outside air pressure presses the top cover downward, so that the top cover presses the No. 1 rubber pad downward, so that the No. 1 rubber pad fits more closely with the top of the top housing, further improving the sealing performance, and achieving the purpose of preventing paint from splashing onto the operator's clothes through a completely sealed space;

[0020] 2. The present invention drives the worm to rotate through the servo motor, and then drives the half gear to rotate. When the half gear is meshed with the No. 1 gear, the No. 1 gear rotates, and then drives the No. 2 gear to rotate. The No. 2 gear drives the No. 2 shaft to rotate, and then drives the support plate to rotate, so as to achieve intermittent rotation. Each time the support plate rotates only one-sixth of a circle, and then drives the placement mechanism to rotate one-sixth of a circle. The rotation stops each time the paint is sprayed, and each time the paint is sprayed, only one-sixth of the surface is sprayed, thereby ensuring the effect of the paint spraying.

[0021] 3. The present invention uses a booster pump to draw the paint in the paint box into a hose, and then into a nozzle, and sprays out from the nozzle for spraying. The rotation of the worm drives the worm wheel to rotate, and then drives the third rotating shaft to rotate. The rotation of the third rotating shaft drives the turntable to rotate. The rotation of the turntable drives the sliding block 408 to move up and down along the guide groove through the connecting rod and the guide groove, and then drives the nozzle to move up and down, changing the range of spraying paint, so that the spraying range is wider;

[0022] 4. The present invention sets a protective cover on the top of the motor to be painted to protect its end and the motor shaft, and sets a card slot and a card block so that the rotation of the support plate can drive the placement frame to rotate, thereby driving the motor to be painted to rotate, so that the paint spraying mechanism can spray paint on different surfaces of the motor to be painted. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the front cross-sectional structure of the housing of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the sealing mechanism of the present invention in an exploded view;

[0027] Figure 4 It is a schematic diagram of the structure of the rotating mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the paint spraying mechanism structure of the present invention;

[0029] Figure 6 It is a schematic diagram of the exploded view structure of the placement mechanism of the present invention.

[0030] In the figure: 1. Shell; 2. Sealing mechanism; 201. Top cover; 202. Convex plate; 203. No. 1 rubber pad; 204. No. 2 rubber pad; 205. Inlet pipe; 206. Vacuum pump; 207. Connecting head; 208. Mounting frame; 209. Filter; 3. Rotating mechanism; 301. Servo motor; 302. Half gear; 303. Worm; 304. No. 1 gear; 305. No. 2 gear; 306. No. 1 rotating shaft; 307. No. 2 rotating shaft; 308. Support plate; 4. Painting mechanism; 401. Paint box; 402. Increase Pressure pump; 403, hose; 404, third shaft; 405, L-shaped plate; 406, turntable; 407, nozzle; 408, sliding block; 409, guide groove; 4010, connecting rod; 4011, worm gear; 5, placement mechanism; 501, slot; 502, block; 503, plug rod; 504, placement rack; 505, protective cover; 506, pull rod; 507, spring; 6, support foot; 7, control panel; 8, observation window; 9, drain pipe; 10, drain valve; 11, liquid inlet pipe; 12, handle; 13, motor to be painted. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] A preferred embodiment of a protective device for motor housing painting provided by the present invention is as follows: Figures 1 to 6 As shown: a protective device for painting a motor housing, comprising a housing 1, wherein a sealing mechanism 2 is arranged inside the housing 1;

[0034] The sealing mechanism 2 includes a top cover 201, a No. 2 rubber pad 204, and a vacuum pump 206. A convex plate 202 is fixedly installed at the bottom of the top cover 201. A No. 1 rubber pad 203 is fixedly installed at the bottom of the top cover 201. The outer wall of the No. 2 rubber pad 204 is fixedly connected to the inner wall of the shell 1. The No. 2 rubber pad 204 is movably sleeved on the convex plate 202. The lower surface of the No. 1 rubber pad 203 fits the upper surface of the shell 1. The top cover 201 and the convex plate 202 are arranged to cover the top of the shell 1. The No. 1 rubber pad 203 and the No. 2 rubber pad 204 are arranged to ensure the sealing between the top cover 201, the convex plate 202 and the shell 1 respectively, so as to prevent the paint from splashing out of the shell 1 during the painting process. The outer wall of the vacuum pump 206 is fixed to the outer wall of the shell 1 The air inlet end of the vacuum pump 206 is connected with an air inlet pipe 205, the outer wall of the right end of the air inlet pipe 205 is fixedly connected to the inner wall of the shell 1, and the right end of the air inlet pipe 205 is connected with a connecting head 207, and the left outer wall of the connecting head 207 is fixedly connected to the left inner wall of the shell 1. The gas in the shell 1 is extracted from the connecting head 207 and the air inlet pipe 205 by the vacuum pump 206, so that the air pressure in the shell 1 is lower than the external air pressure, and the sealing performance is further improved. The inner wall of the connecting head 207 is fixedly installed with a mounting frame 208 by bolts, and a filter screen 209 is fixedly installed on the inner side of the mounting frame 208. The mounting frame 208 is provided for installing the filter screen 209 in the connecting head 207, and the filter screen 209 is provided to prevent paint from entering the connecting head 207;

[0035] A rotating mechanism 3 is fixedly installed on the bottom inner wall of the housing 1, a painting mechanism 4 is fixedly installed on the right inner wall of the housing 1, and a placing mechanism 5 is arranged on the top of the rotating mechanism 3;

[0036] Place the top cover 201 on the top of the outer shell 1. At this time, the convex plate 202 is stuck on the inner side of the No. 2 rubber pad 204. Turn on the vacuum pump 206 to extract the gas in the outer shell 1 from the connecting head 207 and the air inlet pipe 205, so that the air pressure in the outer shell 1 is lower than the external air pressure. The higher external air pressure presses the top cover 201 downward, so that the top cover 201 presses the No. 1 rubber pad 203 downward, so that the No. 1 rubber pad 203 fits more closely with the top of the top outer shell 1, further improving the sealing performance, and achieving the purpose of preventing paint from splashing onto the operator's clothes through a completely sealed space.

[0037] In this embodiment, a handle 12 is fixedly installed on the top of the top cover 201. Two handles 12 are provided, which are respectively located on the left and right sides of the top of the top cover 201, so as to facilitate pulling the top cover 201 outward to remove the top cover 201. An observation window 8 is fixedly installed on the front of the outer shell 1 for observing the paint spraying inside the outer shell 1. A control panel 7 is fixedly installed on the front of the outer shell 1 for controlling the switch of the corresponding electrical equipment. A supporting foot 6 is fixedly installed on the bottom of the outer shell 1, and a shock-absorbing pad is fixedly installed on the bottom of the supporting foot 6 to reduce the vibration of the outer shell 1.

[0038] Example 2

[0039] Based on Example 1, a preferred embodiment of a protective device for motor housing painting provided by the present invention is as follows: Figures 1 to 6 As shown: the rotating mechanism 3 includes a servo motor 301, the bottom of the servo motor 301 is fixedly connected to the inner wall of the housing 1, a worm 303 is fixedly installed at the output end of the servo motor 301, a half gear 302 is fixedly installed on the outer wall of the worm 303, the half gear 302 is meshed with a No. 1 gear 304, the inner wall of the No. 1 gear 304 is fixedly installed with a No. 1 rotating shaft 306, the bottom end of the No. 1 rotating shaft 306 is rotatably connected to the bottom inner wall of the housing 1 through a bearing, the No. 1 gear 304 is meshed with a No. 2 gear 305, the inner wall of the No. 2 gear 305 is fixedly installed with a No. 2 rotating shaft 307, the bottom end of the No. 2 rotating shaft 307 is rotatably connected to the bottom inner wall of the housing 1 through a bearing, a support plate 308 is fixedly installed on the top of the No. 2 rotating shaft 307, the worm 303 is driven to rotate by the servo motor 301, and then the half gear 302 is driven to rotate, the rotation of the half gear 302 drives the No. 1 gear 304 to rotate, and then the No. 2 gear 305 is driven to rotate, and the No. 2 gear 305 is driven to rotate. 305 drives the second rotating shaft 307 to rotate, and then drives the supporting plate 308 to rotate. The number of teeth of the first gear 304 is twice the number of teeth of the half gear 302, and the number of teeth of the second gear 305 is three times the number of teeth of the first gear 304, so that the supporting plate 308 rotates one sixth of a circle for each rotation of the half gear 302, and the supporting plate 308 will stay for a period of time every time it rotates one sixth of a circle. The servo motor 301 is turned on to drive the worm 303 to rotate, and then drive the half gear 302 to rotate. When the half gear 302 is meshed with the first gear 304, the first gear 304 rotates, and then drives the second gear 305 to rotate. The second gear 305 drives the second rotating shaft 307 to rotate, and then drives the supporting plate 308 to rotate, realizing intermittent rotation, and each time the supporting plate 308 only rotates one sixth of a circle, and then drives the placement mechanism 5 to rotate one sixth of a circle, and stops rotating each time when painting, and only one sixth of the surface is sprayed each time, thereby ensuring the effect of painting.

[0040] Example 3

[0041] Based on Examples 1 and 2, a preferred embodiment of a protective device for motor housing painting provided by the present invention is as follows: Figures 1 to 6As shown: the paint spraying mechanism 4 includes a paint box 401, an L-shaped plate 405, and a worm gear 4011. The top of the paint box 401 is connected to a booster pump 402 through a conduit, and the output end of the booster pump 402 is connected to a hose 403. The outer wall of the hose 403 is fixedly connected to the inner wall of the housing 1, and the left end of the hose 403 is connected to a nozzle 407. The worm gear 4011 is meshed with the worm 303. The inner wall of the worm gear 4011 is fixedly installed with a third rotating shaft 404. The right end of the third rotating shaft 404 is rotatably connected to the right inner wall of the housing 1 through a bearing. The outer wall of the third rotating shaft 404 is fixedly installed with a turntable 406. The left outer wall of the turntable 406 is rotatably connected to a connecting rod 4010 through a pin. One end of the connecting rod 4010 is rotatably connected to a sliding block 408 through a pin. The right end is fixedly connected to the right inner wall of the shell 1, and a guide groove 409 is opened on the left outer wall of the L-shaped plate 405. The sliding block 408 is slidably set in the guide groove 409. The right outer wall of the nozzle 407 is fixedly connected to the left outer wall of the sliding block 408. A booster pump 402 is set to draw the paint in the paint box 401 into the hose 403, and then enter the nozzle 407, and spray it out from the nozzle 407 for painting. The rotation of the worm 303 drives the worm wheel 4011 to rotate, and then drives the third rotating shaft 404 to rotate. The rotation of the third rotating shaft 404 drives the turntable 406 to rotate. The rotation of the turntable 406 drives the sliding block 408 to move up and down along the guide groove 409 through the connecting rod 4010 and the guide groove 409, and then drives the nozzle 407 to move up and down, thereby changing the range of painting, so that the range of painting is wider.

[0042] In this embodiment, a liquid inlet pipe 11 is connected to the top of the paint box 401 for adding paint into the paint box 401, and a liquid drain pipe 9 is connected to the right outer wall of the paint box 401. A liquid drain valve 10 is fixedly installed at the right end of the liquid drain pipe 9 for discharging waste liquid when cleaning the paint box 401.

[0043] Example 4

[0044] Based on embodiments 1, 2 and 3, a preferred embodiment of a protective device for motor housing painting provided by the present invention is as follows: Figures 1 to 6As shown: the placement mechanism 5 includes a slot 501 and a placement rack 504. The slot 501 is located at the top of the support plate 308. A block 502 is fixedly installed at the bottom of the placement rack 504. The block 502 is clamped in the slot 501. The slot 501 and the block 502 are arranged so that the rotation of the support plate 308 can drive the placement rack 504 to rotate. A plug rod 503 is fixedly installed on the inner and outer walls of the bottom of the placement rack 504. The inner and outer walls of the placement rack 504 are placed with a motor 13 to be sprayed with paint. The top of the placement rack 504 A spring 507 is fixedly installed on the inner and outer walls, and a protective cover 505 is fixedly installed on the bottom of the spring 507. The protective cover 505 covers the top of the motor 13 to be painted. The protective cover 505 is set to cover the top of the motor 13 to be painted to protect its end and the motor shaft. The spring 507 is set to press the protective cover 505 downward so that the protective cover 505 is tightly pressed on the top of the motor 13 to be painted. A pull rod 506 is fixedly installed on the top of the protective cover 505, and the pull rod 506 movably penetrates the placement frame 504. The top of the pull rod 506 is used to pull the protective cover 505 upward and away from the top of the motor to be painted 13. A baffle is fixedly installed on the top of the pull rod 506 to prevent the pull rod 506 from being driven by the protective cover 505 to fall and leave the placement rack 504. The insertion rod 503 movably penetrates the flange at the bottom of the motor to be painted 13 to limit the motor to be painted 13, so that the placement rack 504 rotates to drive the motor to be painted 13 to rotate, and the pull rod 506 is pulled upward to drive the protective cover 505 to move upward, and the motor to be painted 13 is placed on the placement rack 504. 04, and insert the insertion rod 503 into the threaded hole reserved on the flange at the bottom of the motor 13 to be painted, loosen the pull rod 506, and the spring 507 pushes the protective cover 505 down to cover the top of the motor 13 to be painted, and then place the placement rack 504 on the support plate 308, so that the block 502 is inserted into the slot 501, so that the rotating mechanism 3 can drive the placement rack 504 to rotate, and then drive the motor 13 to be painted to rotate, and the paint spraying mechanism 4 sprays paint on different surfaces of the motor 13 to be painted.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A protective device for painting a motor housing, comprising a housing (1), characterized in that: A sealing mechanism (2) is provided inside the housing (1); The sealing mechanism (2) comprises a top cover (201), a second rubber pad (204), and a vacuum pump (206); a convex plate (202) is fixedly mounted on the bottom of the top cover (201); a first rubber pad (203) is fixedly mounted on the bottom of the top cover (201); an outer wall of the second rubber pad (204) is fixedly connected to an inner wall of the outer shell (1); the second rubber pad (204) is movably sleeved on the convex plate (202); a lower surface of the first rubber pad (203) is in contact with an upper surface of the outer shell (1); and the vacuum pump (206) The outer wall of the connecting rod (206) is fixedly connected to the outer wall of the outer shell (1); the air inlet end of the vacuum pump (206) is connected to an air inlet pipe (205); the outer wall of the right end of the air inlet pipe (205) is fixedly connected to the inner wall of the outer shell (1); the right end of the air inlet pipe (205) is connected to a connecting head (207); the left outer wall of the connecting head (207) is fixedly connected to the left inner wall of the outer shell (1); a mounting frame (208) is fixedly mounted on the inner wall of the connecting head (207) by bolts; a filter screen (209) is fixedly mounted on the inner side of the mounting frame (208); A rotating mechanism (3) is fixedly mounted on the bottom inner wall of the shell (1), a painting mechanism (4) is fixedly mounted on the right inner wall of the shell (1), and a placing mechanism (5) is arranged on the top of the rotating mechanism (3); The rotating mechanism (3) comprises a servo motor (301), the bottom of the servo motor (301) is fixedly connected to the inner wall of the housing (1), a worm (303) is fixedly mounted on the output end of the servo motor (301), a half gear (302) is fixedly mounted on the outer wall of the worm (303), the half gear (302) is meshed with a first gear (304), a first rotating shaft (306) is fixedly mounted on the inner wall of the first gear (304), the bottom end of the first rotating shaft (306) is rotatably connected to the bottom inner wall of the housing (1) via a bearing, the first gear (304) is meshed with a second gear (305), a second rotating shaft (307) is fixedly mounted on the inner wall of the second gear (305), the bottom end of the second rotating shaft (307) is rotatably connected to the bottom inner wall of the housing (1) via a bearing, and a support plate (308) is fixedly mounted on the top of the second rotating shaft (307); The paint spraying mechanism (4) comprises a paint box (401), an L-shaped plate (405), and a worm gear (4011). The top of the paint box (401) is connected to a booster pump (402) via a conduit, the output end of the booster pump (402) is connected to a hose (403), the top of the paint box (401) is connected to a liquid inlet pipe (11), the right side outer wall of the paint box (401) is connected to a liquid discharge pipe (9), the right end of the liquid discharge pipe (9) is fixedly installed with a liquid discharge valve (10), the outer wall of the hose (403) is fixedly connected to the inner wall of the housing (1), the left end of the hose (403) is connected to a nozzle (407), the worm gear (4011) is meshed with the worm (303), and the worm gear (401) is connected to the inner wall of the housing (1). 1) is fixedly mounted on the inner wall of the housing (1) with a third rotating shaft (404), the right end of the third rotating shaft (404) is rotatably connected to the right inner wall of the housing (1) via a bearing, a rotating disk (406) is fixedly mounted on the outer wall of the third rotating shaft (404), the left outer wall of the rotating disk (406) is rotatably connected to a connecting rod (4010) via a pin, one end of the connecting rod (4010) is rotatably connected to a sliding block (408) via a pin, the right end of the L-shaped plate (405) is fixedly connected to the right inner wall of the housing (1), a guide groove (409) is provided on the left outer wall of the L-shaped plate (405), the sliding block (408) is slidably arranged in the guide groove (409), and the right outer wall of the nozzle (407) is fixedly connected to the left outer wall of the sliding block (408); The placement mechanism (5) comprises a slot (501) and a placement rack (504), wherein the slot (501) is located at the top of the support plate (308), a block (502) is fixedly installed at the bottom of the placement rack (504), and the block (502) is snapped into the slot (501), an insertion rod (503) is fixedly installed on the inner and outer walls of the bottom of the placement rack (504), a motor (13) to be painted is placed on the inner and outer walls of the placement rack (504), and the top of the placement rack (504) is fixedly mounted on the inner and outer walls of the placement rack (504). A spring (507) is fixedly installed on the inner outer wall, a protective cover (505) is fixedly installed on the bottom of the spring (507), the protective cover (505) covers the top of the motor (13) to be painted, a pull rod (506) is fixedly installed on the top of the protective cover (505), the pull rod (506) movably passes through the top of the placement rack (504), a baffle is fixedly installed on the top of the pull rod (506), and the insertion rod (503) movably passes through the flange at the bottom of the motor (13) to be painted; A handle (12) is fixedly mounted on the top of the top cover (201), and two handles (12) are provided, respectively located on the left and right sides of the top of the top cover (201); The number of teeth of the first gear (304) is twice the number of teeth of the half gear (302), and the number of teeth of the second gear (305) is three times the number of teeth of the first gear (304).

2. A protective device for motor housing painting according to claim 1, characterized in that: An observation window (8) is fixedly mounted on the front of the housing (1), and a control panel (7) is fixedly mounted on the front of the housing (1).

3. A protective device for motor housing painting according to claim 2, characterized in that: A supporting foot (6) is fixedly mounted on the bottom of the housing (1), and a shock-absorbing pad is fixedly mounted on the bottom of the supporting foot (6).

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