A spraying device for automobile lighting lamp production

Abstract

The application is suitable for the technical field of lamp production, and provides a spraying device for automobile lighting lamp production, which comprises a rack, a spraying assembly, a feeding conveyor belt, a discharging conveyor belt, a spraying cylinder, a rotating disc, a first stepping motor, a sleeve ring and a bearing ring. The spraying assembly comprises a hollow rod, a nozzle and a driving part. An annular liquid supply cavity is arranged on the cylinder wall of the spraying cylinder. In the initial state, the spraying cylinder is located at the feeding station A and is in an inclined state. The feeding conveyor belt is started, the lamp body falls onto the bearing ring in the spraying cylinder, then the first stepping motor and the spraying assembly are started to perform the spraying operation. When the spraying cylinder rotates to the discharging station B, the bearing ring pushes out the lamp body and the lamp body falls onto the discharging conveyor belt. The feeding, spraying and discharging work are automatically completed, and the work efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of lighting manufacturing technology, and in particular relates to a spraying device for automotive lighting manufacturing. Background Technology

[0002] Automotive LEDs can be divided into exterior and interior applications. Interior applications include dashboard, air conditioning, audio indicator lights, and interior reading lights; exterior applications include third brake lights, taillights, and turn signals. When producing automotive lighting fixtures, the main body of the fixture must be painted.

[0003] A search revealed that Chinese patent CN112547401B discloses a spraying device for automotive lighting fixture production, comprising a housing, a fixing block, a motor, and a lamp body. The fixing block is fixedly installed on the inner wall of one end of the housing, and the motor is fixedly installed on the upper surface of the fixing block. One end of the motor is keyed to a drive rod, and one end of the drive rod is connected to an inner clamping mechanism. This spraying device for automotive lighting fixture production, by rotating the connecting rod in the forward direction, causes the pressing block on the inner clamping mechanism to press against the inner wall of the lamp body, facilitating more comprehensive spraying of the outer surface of the lamp body. Then, by rotating the connecting rod in the reverse direction, the outer clamping mechanism clamps the outer surface of the lamp body, simultaneously releasing the pressure of the inner clamping mechanism on the inner wall of the lamp body, allowing for spraying of both the outer and inner surfaces of the lamp body.

[0004] Although the aforementioned patent can achieve spraying on the outer and inner surfaces of the lamp body, it requires switching between the inner and outer clamping mechanisms. It also requires manual or robotic arms to first hold the lamp body to the clamping position, clamp it, then spray it, and then manually or robotic arms to remove the lamp body. The operation is relatively complicated and cumbersome, with low automation and reduced production efficiency. Summary of the Invention

[0005] This invention provides a spraying apparatus for the production of automotive lighting fixtures, aiming to solve the above-mentioned problems.

[0006] The present invention is implemented as follows: a spraying apparatus for the production of automotive lighting fixtures, comprising a frame and a spraying assembly, and further comprising:

[0007] A feeding conveyor belt is installed on the frame, and a discharging conveyor belt is installed on the frame above the feeding conveyor belt;

[0008] A spraying cylinder is located on one side of the feeding conveyor belt. The end of the spraying cylinder near the feeding conveyor belt is open, and the other end of the spraying cylinder is closed and rotatably connected to the frame. The spraying assembly is installed on the spraying cylinder.

[0009] A turntable is provided on the front and / or rear side of the spraying cylinder. The turntable is fixed on the output shaft of the first stepper motor. The first stepper motor is fixed on the frame. The height of the rotating connection point between the spraying cylinder and the frame is lower than the height of the lowest point of the turntable.

[0010] A collar is movably fitted onto the spray gun, the collar being eccentrically hinged to the end face of the turntable. A support ring is movably provided inside the sleeve along its length to support the lamp body. The support ring and the collar are magnetically attracted to each other.

[0011] Preferably, the feeding conveyor belt includes three conveyor rollers and one conveyor belt body, the height of the output conveyor roller is lower than the height of the middle conveyor roller, and the unloading conveyor belt includes two conveyor rollers and one conveyor belt body.

[0012] Preferably, the spraying assembly includes:

[0013] A hollow rod is rotatably mounted on the cylinder along a coaxial axis. One end of the hollow rod passes through the closed end of the spray cylinder and extends to the outside of the spray cylinder. Multiple nozzles communicating with the cavity are installed on the part of the hollow rod located inside the spray cylinder along its length.

[0014] Drive component, used to rotate the hollow rod;

[0015] The spraying cylinder has an annular liquid supply chamber on its cylinder wall. Multiple nozzles communicating with the liquid supply chamber are installed on the inner side wall of the spraying cylinder along its length. The end of the hollow rod located outside the spraying cylinder is inserted into and rotatably connected to a liquid supply pipe. The spraying cylinder is connected to a liquid supply pipe communicating with the liquid supply chamber.

[0016] Preferably, the driving component includes a second stepper motor and a spur gear pair, wherein the second stepper motor is fixed on the spraying cylinder and the output shaft of the second stepper motor is driven to connect to the hollow rod through the spur gear pair.

[0017] Preferably, a transmission component is connected between the hollow rod and the bearing ring, and when the hollow rod rotates, the bearing ring is driven to rotate in the opposite direction through the transmission component.

[0018] Preferably, the transmission component includes:

[0019] A driving bevel gear is fixed on a hollow rod, and a driven bevel gear opposite to the driving bevel gear is rotatably mounted on the hollow rod;

[0020] A drive bevel gear mounted on the spray gun is rotated, and the drive bevel gear meshes with both the driving bevel gear and the driven bevel gear.

[0021] Multiple telescopic rods are fixed circumferentially at intervals on the end face of the driven bevel gear, and the telescopic ends of the telescopic rods are fixedly connected to the bearing ring.

[0022] Preferably, the liquid supply pipe is connected to one end of the liquid suction hose via a pipe connector, the other end of the liquid suction hose is connected to the liquid supply device, and a booster pump is installed on the liquid suction hose.

[0023] Preferably, the liquid supply device includes:

[0024] The liquid box has a partition fixed at the bottom center of its inner cavity to divide the inner cavity of the liquid box into a spray liquid cavity and a cleaning liquid cavity. Both sides of the box body are connected to liquid replenishment pipes, and valves are installed on the liquid replenishment pipes.

[0025] An inverted T-shaped tube is installed above the partition. Both ends of the horizontal tube of the inverted T-shaped tube are open and the middle position is rotatably connected to the top of the partition. The top of the vertical tube of the inverted T-shaped tube is connected to the liquid suction tube.

[0026] Two symmetrically fixed sealing blocks are fixed to the top of the box. The lower surfaces of the two sealing blocks are curved and used to fit with the horizontal tube end of the inverted T-shaped tube and close the opening.

[0027] The switching component is used to drive the inverted T-shaped tube to rotate.

[0028] Preferably, the switching component includes:

[0029] A driven sector gear fixedly connected to an inverted T-shaped tube, wherein the center of the driven sector gear is located on the rotation axis of the inverted T-shaped tube;

[0030] A third stepper motor is fixed to the top of the box, and a driving spur gear that meshes with the driven sector gear is fixed on the output shaft of the third stepper motor.

[0031] Preferably, it further includes a drying component for drying the lamp body after the spray gun reaches the drying station C. The spray gun has an air outlet. The drying component includes:

[0032] The nozzle is fixed to the top of the frame;

[0033] A hot air blower is fixed to the top of the frame. The air outlet of the hot air blower is connected to the nozzle through an air pipe. The hot air blower is covered with a dustproof net.

[0034] Compared with the prior art, the embodiments of this application have the following main advantages:

[0035] The painting device for automotive lighting fixture production provided by this invention comprises a frame, a painting assembly, a loading conveyor belt, an unloading conveyor belt, a painting cylinder, a turntable, a first stepper motor, a collar, and a support ring. Initially, the painting cylinder is located at loading station A and is tilted. The loading conveyor belt starts, and a lamp body enters the painting cylinder and stops. The lamp body falls onto the support ring inside the painting cylinder. Then, the first stepper motor and the painting assembly are started to perform the painting operation. The lamp body moves along the length of the painting cylinder. When the painting cylinder rotates to unloading station B, the support ring pushes the lamp body out and onto the unloading conveyor belt. The unloading conveyor belt transports the lamp body to the next process. Then, the painting cylinder rotates back to loading station A, automatically completing the loading, painting, and unloading processes, thus improving work efficiency. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of a spraying device for automotive lighting fixture production under the material loading state provided by the present invention;

[0037] Figure 2 This is a schematic diagram of the internal structure of the spraying cylinder in a spraying device for automotive lighting fixture production provided by the present invention;

[0038] Figure 3 This is a schematic diagram of the liquid supply device in a spraying apparatus for automotive lighting fixture production provided by the present invention;

[0039] Figure 4 This is a schematic diagram of another state of the liquid supply equipment in a spraying device for automotive lighting fixture production provided by the present invention;

[0040] Figure 5 This is a schematic diagram of the structure of a spraying device for automotive lighting fixture production under drying conditions, provided by the present invention.

[0041] Figure 6 This is a schematic diagram of the structure of a spraying device for automotive lighting fixture production in the material unloading state, provided by the present invention.

[0042] Figure label annotations: A. Loading station; B. Unloading station; C. Drying station; 1. Frame; 2. Loading conveyor belt; 3. Spray gun; 4. Unloading conveyor belt; 5. Collar; 6. Turntable; 7. First stepper motor; 8. Spray nozzle; 9. Hot air blower; 10. Dustproof mesh cover; 11. Second stepper motor; 12. Spur gear pair; 13. Liquid supply pipe; 14. Liquid suction hose; 15. Booster pump; 16. 17. Enclosed block; 18. Driving spur gear; 19. Driven sector gear; 20. Inverted T-shaped tube; 21. Partition plate; 22. Spraying liquid chamber; 23. Cleaning liquid chamber; 24. Liquid box; 25. Return hose; 26. Gravity sleeve; 27. Telescopic rod; 28. Transmission bevel gear; 29. ​​Air outlet; 30. Hollow rod; 31. Driving bevel gear; 32. Driven bevel gear; 33. Liquid supply chamber; 34. Bearing ring. Detailed Implementation

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0044] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0045] This invention provides a spraying device for automotive lighting fixture production, such as... Figures 1-6 As shown, it includes a frame 1 and a painting assembly, and also includes:

[0046] The feeding conveyor belt 2 is installed on the frame 1. The unloading conveyor belt 4 is installed on the frame 1 above the feeding conveyor belt 2. The feeding conveyor belt 2 includes three conveyor rollers and one conveyor belt body. The height of the conveyor roller at the output end is lower than the height of the middle conveyor roller. The unloading conveyor belt 4 includes two conveyor rollers and one conveyor belt body.

[0047] A spraying cylinder 3 is located on one side of the feeding conveyor belt 2. The end of the spraying cylinder 3 near the feeding conveyor belt 2 is open, and the other end of the spraying cylinder 3 is closed and rotatably connected to the frame 1. It can be rotatably connected to the frame 1 through a rotating shaft and bearings. The spraying assembly is installed on the spraying cylinder 3.

[0048] A turntable 6 is located on the front and / or rear side of the spraying cylinder 3. The turntable 6 is fixed on the output shaft of the first stepper motor 7 and can be fixed by welding. The first stepper motor 7 is fixed on the frame 1 and can be fixed by bolts. The height of the rotating connection point between the spraying cylinder 3 and the frame 1 is lower than the height of the lowest point of the turntable 6.

[0049] A collar 5 is movably fitted onto the spray gun 3. The collar 5 is eccentrically hinged to the end face of the turntable 6. A bearing ring 33 is movably provided inside the sleeve along its length direction to support the lamp body (in this embodiment, the lamp body is a trumpet-shaped lamp shell). The bearing ring 33 and the collar 5 are magnetically attracted to each other. For example, magnets are embedded circumferentially at intervals on the inner side wall of the bearing ring 33, and iron rings are embedded on the outer side wall of the collar 5, thereby achieving magnetic attraction.

[0050] like Figure 1 As shown, in the initial state, the spraying cylinder 3 is located at the loading station A and is in an inclined state. The loading conveyor belt 2 starts, and a lamp body on it enters the spraying cylinder 3 and then stops. The lamp body falls onto the support ring 33 inside the spraying cylinder 3. Then, the first stepper motor 7 is started and the spraying assembly is started to perform the spraying operation. The first stepper motor 7 drives the turntable 6 to rotate more than 180 degrees. The turntable 6 drives the collar 5 to move. The collar 5 drives the spraying cylinder 3 to rotate. At the same time, the collar 5 moves along the length of the spraying cylinder 3. Since the collar 5 and the support ring 33 are magnetically attracted to each other, the collar 5 drives the support ring 33 to move along the length of the spraying cylinder 3, so that the lamp body on it is sprayed... The coating cylinder 3 moves along its length, allowing the spraying assembly to fully coat the moving lamp body. When the coating cylinder 3 rotates to the unloading station B, the collar 5 drives the bearing ring 33 to gradually push the lamp body out and onto the unloading conveyor belt 4. The unloading conveyor belt 4 transports the lamp body to the next process. Then, the coating cylinder 3 rotates again to the loading station A, automatically completing the loading, spraying, and unloading work, thus improving work efficiency. Specifically, the positions of the loading station A, the unloading station B, the loading conveyor belt 2, and the unloading conveyor belt 4 can be designed according to the actual site conditions. Other methods in the existing technology can also be used to achieve loading and unloading without too many restrictions.

[0051] The spraying assembly includes:

[0052] A hollow rod 29 is rotatably mounted on the cylinder body along the same axis. One end of the hollow rod 29 passes through the closed end of the spray cylinder 3 and extends to the outside of the spray cylinder 3. Multiple nozzles communicating with the cavity are installed on the part of the rod end of the hollow rod 29 located inside the spray cylinder 3 along its length direction.

[0053] A driving component is used to drive the hollow rod 29 to rotate. In this embodiment, the driving component includes a second stepper motor 11 and a spur gear pair 12. The second stepper motor 11 is fixed on the spraying cylinder 3 and can be fixed by screws. The output shaft of the second stepper motor 11 is connected to the hollow rod 29 through the spur gear pair 12. When the second stepper motor 11 is started, the second stepper motor 11 drives the hollow rod 29 to rotate through the spur gear pair 12.

[0054] The spraying cylinder 3 has an annular liquid supply chamber 32 on its cylinder wall. Multiple nozzles communicating with the liquid supply chamber 32 are installed on the inner side wall of the spraying cylinder 3 along its length. The hollow rod 29 is inserted into and rotatably connected to a liquid supply pipe 13 at one end outside the spraying cylinder 3. The liquid supply pipe 13 communicating with the liquid supply chamber 32 is connected to the spraying cylinder 3. The liquid supply pipe 13 can be a flexible hose, which is connected and installed through a pipe joint.

[0055] It needs to be explained that the lamp body enters the spraying cylinder 3, the hollow rod 29 passes through the lamp body, the liquid supply pipe 13 supplies spraying liquid to the hollow rod 29 and the liquid supply chamber 32, and the spraying liquid is sprayed out from the nozzles on the inner side wall of the hollow rod 29 and the spraying cylinder 3, which can spray the inner and outer surfaces of the lamp body at the same time. The hollow rod 29 is driven to rotate by the driving component, and at the same time the turntable 6 drives the collar 5 to move. The collar 5 drives the spraying cylinder 3 to rotate, and at the same time the collar 5 moves along the length direction of the spraying cylinder 3. The collar 5 drives the bearing ring 33 to move along the length direction of the spraying cylinder 3, so that the lamp body on it moves along the length direction of the spraying cylinder 3, which can fully spray the inner and outer surfaces of the lamp body.

[0056] Preferably, a transmission component is connected between the hollow rod 29 and the bearing ring 33. When the hollow rod 29 rotates, it drives the bearing ring 33 to rotate in the opposite direction via the transmission component. Specifically, the transmission component includes:

[0057] The driving bevel gear 30, which is fixed on the hollow rod 29, can be fixed by welding. The driven bevel gear 31, which is opposite to the driving bevel gear 30, is rotatably mounted on the hollow rod 29 and can be rotatably mounted by bearings.

[0058] The transmission bevel gear 27, which is rotatably mounted on the spray gun 3, can be rotatably mounted via a rotating shaft and bearings. The transmission bevel gear 27 meshes with both the driving bevel gear 30 and the driven bevel gear 31.

[0059] Multiple telescopic rods 26 are fixed circumferentially at intervals on the end face of the driven bevel gear 31. The telescopic ends of the telescopic rods 26 are fixedly connected to the bearing ring 33 and can be fixed by screws. The telescopic rods 26 are similar to the existing telescopic fishing rod structure and can be freely extended and retracted.

[0060] When the hollow rod 29 rotates, it drives the active bevel gear 30 to rotate. The active bevel gear 30 drives the driven bevel gear 31 to rotate through the transmission bevel gear 27. The driven bevel gear 31 drives the bearing ring 33 to rotate through the telescopic rod 26. The bearing ring 33 drives the lamp body on it to rotate, making the lamp body sprayed more fully and evenly. Furthermore, the setting of the telescopic rod 26 does not affect the collar 5 from driving the bearing ring 33 to move along the length direction of the spraying cylinder 3.

[0061] In this embodiment, the liquid supply pipe 13 is connected to one end of the liquid suction hose 14 via a pipe connector, and the other end of the liquid suction hose 14 is connected to the liquid supply device. A booster pump 15 is installed on the liquid suction hose 14.

[0062] Specifically, the liquid supply device includes:

[0063] The liquid box 23 has a partition 20 fixed at the middle of the bottom of its inner cavity, which is used to divide the inner cavity of the liquid box 23 into a spray liquid chamber 21 and a cleaning liquid chamber 22. Both sides of the box body are connected to a liquid replenishment pipe, and valves are installed on the liquid replenishment pipes to replenish the spray liquid and cleaning liquid respectively.

[0064] An inverted T-shaped tube 19 is provided above the partition 20. Both ends of the horizontal tube of the inverted T-shaped tube 19 are open and the middle position is rotatably connected to the top of the partition 20. The top of the vertical tube of the inverted T-shaped tube 19 is connected to the liquid suction hose 14 through a pipe joint.

[0065] Two symmetrically fixed sealing blocks 16 are fixed to the top of the box. The lower surfaces of the two sealing blocks 16 are curved, which are used to fit with the horizontal tube end of the inverted T-shaped tube 19 and close the opening.

[0066] The switching component is used to drive the inverted T-shaped tube 19 to rotate;

[0067] During spraying, the inverted T-shaped tube 19 is rotated towards the spraying liquid chamber 21 by the switching component. One end of the horizontal tube above the spraying liquid chamber 21 enters the spraying liquid chamber 21, and the other end of the horizontal tube is sealed by the sealing block 16. Then, the booster pump 15 works, and the spraying liquid is sucked into the horizontal tube and then into the suction hose 14. It is then sent into the hollow rod 29 and the supply chamber 32 through the supply pipe 13 and sprayed out from the nozzle for spraying. After the spraying work is completed, the device needs to be cleaned. The inverted T-shaped tube 19 is rotated towards the cleaning liquid chamber 22 by the switching component. One end of the horizontal tube above the cleaning liquid chamber 22 enters the cleaning liquid chamber 22, and the other end of the horizontal tube is sealed by the sealing block 16. The booster pump 15 works, and the cleaning liquid is sucked into the horizontal tube and then into the suction hose 14. It is then sent into the hollow rod 29 and the supply chamber 32 through the supply pipe 13 and sprayed out from the nozzle for cleaning.

[0068] The switching component includes:

[0069] A driven sector gear 18 is fixedly connected to the inverted T-shaped tube 19, and the center of the driven sector gear 18 is located on the rotation axis of the inverted T-shaped tube 19;

[0070] The third stepper motor, which is fixed to the top of the box, can be fixed with screws. The output shaft of the third stepper motor is fixed with a driving spur gear 17 that meshes with the driven sector gear 18. The third stepper motor drives the driving spur gear 17 to rotate, the driving spur gear 17 drives the driven sector gear 18 to rotate, and the driven sector gear 18 drives the inverted T-shaped tube 19 to rotate.

[0071] In this embodiment, a return hose 24 is connected to the bottom of the spraying cylinder 3, and a gravity sleeve 25 is installed at the top of the vertical tube of the inverted T-shaped tube 19. The top middle of the gravity sleeve 25 is hinged to the top of the vertical tube. One end of the return hose 24 enters the liquid box 23 and passes through the gravity sleeve 25. The return hose 24 and the gravity sleeve 25 can be tied together with a rope. By setting the gravity sleeve 25, the weight keeps the opening of the return hose 24 facing downward. During spraying, the opening of the gravity sleeve 25 and the return hose 24 at the top of the vertical tube are located above the spraying liquid chamber 21. Excess spraying liquid in the spraying cylinder 3 flows back to the spraying liquid chamber 21 through the return hose 24. During cleaning, the opening of the gravity sleeve 25 and the return hose 24 at the top of the vertical tube are located above the cleaning liquid chamber 22. The waste liquid after cleaning flows back to the cleaning liquid chamber 22. The structure is simple, and spraying and cleaning can be cleverly switched.

[0072] Preferably, the spraying device for automotive lighting fixture production further includes a drying component for drying the lamp body after the spraying cylinder 3 reaches the drying station C. The spraying cylinder 3 is provided with an air outlet 28. The drying component includes:

[0073] The nozzle 8, which is fixed to the top of the frame 1, can be secured with screws;

[0074] The hot air blower 9, which is fixed to the top of the frame 1, can be fixed with screws. The air outlet of the hot air blower 9 is connected to the nozzle 8 through an air pipe. The hot air blower 9 is covered with a dustproof net cover 10.

[0075] After the material is loaded, the first stepper motor 7 drives the turntable 6 to rotate. The turntable 6 drives the spraying cylinder 3 to rotate through the collar 5, and spraying is performed at the same time. When the spraying cylinder 3 rotates to the drying station C, the first stepper motor 7 stops, the spraying assembly stops spraying, and then the hot air fan 9 is started. The hot air fan 9 generates hot air that is sprayed out from the nozzle 8 for drying. After drying, the first stepper motor 7 drives the turntable 6 to rotate. The turntable 6 drives the spraying cylinder 3 to move to the lower material station B through the collar 5.

[0076] In summary, this invention provides a spraying device for automotive lighting fixture production, the working principle of which is as follows:

[0077] Initially, the spraying cylinder 3 is located at the loading station A and is tilted. The loading conveyor belt 2 starts, and one lamp body enters the spraying cylinder 3 and stops. The lamp body falls onto the bearing ring 33 inside the spraying cylinder 3. The hollow rod 29 passes through the lamp body. The first step motor 7 is started, and the spraying assembly is started to perform the spraying operation. The liquid supply pipe 13 supplies spraying liquid to the hollow rod 29 and the liquid supply chamber 32. The spraying liquid is sprayed out from the nozzles on the inner wall of the hollow rod 29 and the spraying cylinder 3, which can spray the inner and outer surfaces of the lamp body simultaneously. At the same time, the hollow rod 29 is driven to rotate by the drive component, and the turntable 6 drives the collar 5 to move. The collar 5 drives the spraying cylinder 3 to rotate, and the collar 5 moves along the length of the spraying cylinder 3. In the process, the collar 5 drives the carrying ring 33 to move along the length of the spraying cylinder 3, causing the lamp body on it to move along the length of the spraying cylinder 3, thereby fully spraying the moving lamp body. When the spraying cylinder 3 rotates to the drying station C, the first stepper motor 7 stops, the spraying assembly stops spraying, and then the hot air fan 9 is started. The hot air fan 9 generates hot air that is sprayed out from the nozzle 8 for drying. After drying, the first stepper motor 7 drives the turntable 6 to rotate. The turntable 6 drives the spraying cylinder 3 to move to the material feeding station B through the collar 5. During this process, the collar 5 drives the carrying ring 33 to gradually push the lamp body out and fall onto the unloading conveyor belt 4. The unloading conveyor belt 4 transports the lamp body to the next process. Then the spraying cylinder 3 rotates again to the loading station A, and the loading, spraying and unloading work is completed automatically.

[0078] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0079] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0080] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0081] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A spraying device for manufacturing automotive lighting fixtures, characterized in that, Including the frame and painting components, and also including: A feeding conveyor belt is installed on the frame, and a discharging conveyor belt is installed on the frame above the feeding conveyor belt; A spraying cylinder is located on one side of the feeding conveyor belt. The end of the spraying cylinder near the feeding conveyor belt is open, and the other end of the spraying cylinder is closed and rotatably connected to the frame. The spraying assembly is installed on the spraying cylinder. A turntable is provided on the front and / or rear side of the spraying cylinder. The turntable is fixed on the output shaft of the first stepper motor. The first stepper motor is fixed on the frame. The height of the rotating connection point between the spraying cylinder and the frame is lower than the height of the lowest point of the turntable. A collar is movably fitted on the spraying cylinder, the collar being eccentrically hinged to the end face of the turntable, and a support ring is movably provided inside the spraying cylinder along its length direction to support the main body of the lamp. The support ring and the collar are magnetically attracted to each other. The spraying assembly includes: a hollow rod rotatably mounted coaxially inside the cylinder, one end of the hollow rod penetrating the closed end of the spraying cylinder and extending to the outside of the spraying cylinder, and a plurality of nozzles communicating with the cavity are installed on the part of the hollow rod located inside the spraying cylinder along its length direction; it also includes a driving component for driving the hollow rod to rotate. The spraying cylinder has an annular liquid supply chamber on its wall. Multiple nozzles communicating with the liquid supply chamber are installed on the inner side wall of the spraying cylinder along its length. The hollow rod is inserted into and rotatably connected to a liquid supply pipe at one end outside the spraying cylinder. The spraying cylinder is connected to a liquid supply pipe communicating with the liquid supply chamber. The driving component includes a second stepper motor and a spur gear pair. The second stepper motor is fixed on the spraying cylinder. The output shaft of the second stepper motor is driven to connect to the hollow rod through the spur gear pair. A transmission component is connected between the hollow rod and the bearing ring. When the hollow rod rotates, the transmission component drives the bearing ring to rotate in the opposite direction. The transmission component includes: a driving bevel gear fixed on a hollow rod, a driven bevel gear rotatably mounted on the hollow rod opposite to the driving bevel gear; and a transmission bevel gear rotatably mounted on a spraying cylinder, the transmission bevel gear meshing with both the driving bevel gear and the driven bevel gear. Multiple telescopic rods are fixed circumferentially at intervals on the end face of the driven bevel gear, and the telescopic ends of the telescopic rods are fixedly connected to the bearing ring.

2. The spraying apparatus for automotive lighting fixture production as described in claim 1, characterized in that, The feeding conveyor belt includes three conveyor rollers and one conveyor belt body. The height of the conveyor roller at the output end is lower than that of the middle conveyor roller. The unloading conveyor belt includes two conveyor rollers and one conveyor belt body.

3. The spraying apparatus for automotive lighting fixture production as described in claim 1, characterized in that, The liquid supply pipe is connected to one end of the liquid suction hose via a pipe connector, and the other end of the liquid suction hose is connected to the liquid supply device. A booster pump is installed on the liquid suction hose.

4. The spraying apparatus for automotive lighting fixture production as described in claim 3, characterized in that, The liquid supply device includes: The liquid box has a partition fixed at the bottom center of its inner cavity to divide the inner cavity of the liquid box into a spray liquid cavity and a cleaning liquid cavity. Both sides of the liquid box are connected to a liquid replenishment pipe, and valves are installed on the liquid replenishment pipe. An inverted T-shaped tube is installed above the partition. Both ends of the horizontal tube of the inverted T-shaped tube are open and the middle position is rotatably connected to the top of the partition. The top of the vertical tube of the inverted T-shaped tube is connected to the liquid suction tube. Two symmetrically fixed sealing blocks are fixed to the top of the box. The lower surfaces of the two sealing blocks are curved and used to fit with the horizontal tube end of the inverted T-shaped tube and close the opening. The switching component is used to drive the inverted T-shaped tube to rotate.

5. The spraying apparatus for automotive lighting fixture production as described in claim 4, characterized in that, The switching component includes: A driven sector gear fixedly connected to an inverted T-shaped tube, wherein the center of the driven sector gear is located on the rotation axis of the inverted T-shaped tube; A third stepper motor is fixed to the top of the box, and a driving spur gear that meshes with the driven sector gear is fixed on the output shaft of the third stepper motor.

6. The spraying apparatus for automotive lighting fixture production as described in claim 1, characterized in that, It also includes a drying component for drying the lamp body after the spray gun reaches the drying station C. The spray gun has an air outlet. The drying component includes: The nozzle is fixed to the top of the frame; A hot air blower is fixed to the top of the frame. The air outlet of the hot air blower is connected to the nozzle through an air pipe. The hot air blower is covered with a dustproof net.

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