Automatic household article paint spraying equipment

Abstract

The utility model relates to the technical field of spare part quick replacement discloses a kind of automatic paint spraying equipment for household articles, including machine arm, the bottom of the machine arm is provided with placing box, the rear side of the machine arm is provided with quick-release mechanism, the top of the placing box is provided with placing mechanism, the rear side of the placing box is provided with paint blocking mechanism, the quick-release mechanism includes spray head, the top of the spray head is installed in the rear side of machine arm, the outer wall of the spray head middle upper portion is fixedly connected with assembly frame, the top of the assembly frame left and right side is all screw-threaded with bolt one, the bottom of two the bolt one is all screw-threaded with nut one. In the utility model, by assembly frame fitting installation component alignment hole, bolt one is inserted after nut one is screwed and fixed spray head, machine arm drives spray head to move, paint blocking mechanism cooperates with placing box to enclose paint spraying area, placing mechanism is positioned household article on placing box, and the automatic paint spraying of household article is realized.

Description

Technical Field

[0001] This utility model relates to the field of quick parts replacement technology, and in particular to an automatic spray painting device for household products. Background Technology

[0002] An automatic painting equipment for home furnishings is an automated coating device designed for tables, chairs, cabinets, and decorative panel furniture. Its core components include a feeding and conveying system, a precision painting module, a constant temperature curing device, and an intelligent control system. It precisely controls the paint output, spraying path, and coating thickness through preset programs, replacing traditional manual handheld spray gun operations. It is adaptable to various furniture materials such as wood, plastic, and metal, and realizes a continuous process from workpiece loading, painting to initial curing, reducing uneven coating and missed spraying problems caused by manual operation.

[0003] An automated painting machine for home furnishings can significantly improve the efficiency of home painting. Compared with manual spraying, it can shorten the operation time of a single piece. At the same time, it can reduce paint waste by using intelligent paint control technology. It can ensure that the surface coating of home furnishings is uniform and free of drips, with consistent color. It can also handle the precise spraying of complex curved surfaces such as arcs and carvings, and meet different color and gloss requirements. The exhaust gas collection module of the equipment can reduce the diffusion of paint mist, help to achieve environmental protection in the home furnishing production process, stabilize the coating quality, and support large-scale production.

[0004] A significant drawback of an automatic paint spraying system for household goods is that nozzle replacement cannot be completed quickly. Because the nozzle, paint supply line, and positioning components are mostly precision snap-fit, replacement requires shutting down the equipment, disassembling the fixing structure, disconnecting the paint supply line to prevent leakage, and then recalibrating the nozzle angle and spray flow parameters. This interrupts continuous production, especially in small-batch, multi-color household painting scenarios. Frequent nozzle replacements will significantly extend the production cycle, and downtime will cause a backlog of workpieces to be sprayed, indirectly affecting the stability of coating quality. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an automatic spray painting device for household products, which aims to improve the problem that the replacement of spray heads cannot be completed quickly in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic spray painting device for household products, including a robotic arm, a placement box at the bottom of the robotic arm, a quick-release mechanism at the rear of the robotic arm, a placement mechanism at the top of the placement box, and a paint-blocking mechanism at the rear of the placement box. The quick-release mechanism includes a nozzle, the top of which is mounted on the rear side of the robotic arm. An assembly frame is fixedly connected to the upper middle part of the outer wall of the nozzle. Bolts are threadedly connected to the top left and right sides of the assembly frame, and nuts are threadedly connected to the bottom of the two bolts. An installation assembly is provided at the bottom of the robotic arm.

[0007] As a further description of the above technical solution: The placement mechanism includes two placement plates, the bottoms of which are respectively installed on the front and rear sides of the top of the placement box. Multiple positioning support nails are fixedly connected to the top of each of the two placement plates. Bolts are threaded to the left and right sides of each of the two placement plates. Nuts are threaded to the bottom of each of the two bolts. Stabilizing components are provided on the left and right sides of the top of the placement box.

[0008] As a further description of the above technical solution: The paint-blocking mechanism includes a base plate, the top of which is slidably connected to the bottom rear side of the placement box. An outer frame is fixedly connected to the top of the base plate, and a top block is fixedly connected to the top inner side of the outer frame. Movable components are provided around the bottom of the base plate.

[0009] As a further description of the above technical solution: The two placement plates are made of 304 stainless steel, and the multiple positioning support pins are made of nylon 66.

[0010] As a further description of the above technical solution: The base plate is made of 304 stainless steel, the outer frame is made of polycarbonate sheet, and the top block is made of 304 stainless steel.

[0011] As a further description of the above technical solution: The mounting assembly includes a mounting plate, the top of which is fixedly connected to the bottom of the robotic arm, and two bolts are threaded around the top of the mounting plate.

[0012] As a further description of the above technical solution: The stabilizing component includes two lock bodies, the left and right sides of which are fixedly connected to the left and right sides of the same placement box, respectively, and the top of each lock body is equipped with a lock groove.

[0013] As a further description of the above technical solution: The moving component includes multiple legs, the tops of which are fixedly connected to the bottom perimeter of the base plate, and the bottoms of each leg are rotatably connected to wheels.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the assembly frame is used to fit the mounting components and align the holes. After the bolt is inserted, the nut is tightened to fix the spray head. The robotic arm drives the spray head to move. The paint blocking mechanism works with the placement box to surround the painting area. The placement mechanism positions the furniture on the placement box, realizing automated painting of furniture. The spray head is easy to install and remove, reducing equipment downtime, ensuring uniform paint coverage, blocking the spread of paint mist to avoid pollution, maintaining a clean working environment, improving painting efficiency and operational safety, and adapting to various furniture painting needs.

[0015] 2. In this utility model, a placement plate is installed on the front and rear sides of the top of the placement box. Three bolts pass through the placement plate and the stabilizing component, and two nuts are tightened to fix it. The furniture is placed on the placement plate, and the positioning support nail contacts the furniture. When the size needs to be adapted, two nuts are removed, the placement plate is moved and then fixed. This achieves stable bearing and precise positioning of the furniture, avoids displacement during painting that would cause uneven paint layer, and the positioning support nail prevents scratches on the surface of the furniture. It can also adapt to furniture of different sizes, improve the versatility of the equipment, and ensure the quality of painting and the good appearance of the furniture. Attached Figure Description

[0016] Figure 1 This is a perspective view of an automatic spray painting device for household goods proposed in this utility model; Figure 2 This is a front view of an automatic spray painting device for household goods proposed in this utility model; Figure 3 This is a split view of the quick-release mechanism in an automatic paint spraying device for household goods proposed in this utility model; Figure 4 This is a schematic diagram of the stabilizing component in an automatic paint spraying device for household goods proposed in this utility model; Figure 5 This is an exploded view of the placement mechanism in an automatic paint spraying device for household goods proposed in this utility model.

[0017] Legend: 1. Robotic arm; 2. Placement box; 3. Quick release mechanism; 31. Spray head; 32. Assembly frame; 33. Bolt 1; 34. Nut 1; 35. Mounting assembly; 351. Mounting plate; 352. Bolt 2; 4. Placement mechanism; 41. Placement plate; 42. Positioning support pin; 43. Bolt 3; 44. Nut 2; 45. Stabilizing assembly; 451. Lock body; 452. Lock groove; 5. Paint blocking mechanism; 51. Base plate; 52. Outer frame; 53. Top block; 54. Moving assembly; 541. Leg; 542. Wheel. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-3 An embodiment of this utility model is provided: an automatic spray painting device for household products, including a robotic arm 1, a placement box 2 at the bottom of the robotic arm 1, a quick-release mechanism 3 at the rear of the robotic arm 1, a placement mechanism 4 at the top of the placement box 2, and a paint blocking mechanism 5 at the rear of the placement box 2. The quick-release mechanism 3 includes a nozzle 31. The top of the nozzle 31 is mounted on the rear side of the robotic arm 1. An assembly frame 32 is fixedly connected to the upper middle part of the outer wall of the nozzle 31. Bolts 33 are threadedly connected to the top left and right sides of the assembly frame 32. Nuts 34 are threadedly connected to the bottom of the two bolts 33. An installation component 35 is provided at the bottom of the robotic arm 1. Specifically, firstly, the nozzle 31 is assembled with the robotic arm 1 using the quick-release mechanism 3. The assembly frame 32 is then attached to the surface of the mounting component 35 on the rear side of the robotic arm 1, aligning the mounting holes on the assembly frame 32 with the corresponding holes on the mounting component 35. Next, bolt 33 is inserted from the top of the assembly frame 32 into the hole until its bottom protrudes from the mounting component 35. Finally, nut 34 is screwed onto the external thread at the bottom of bolt 33. Through the threaded engagement of bolt 33 and nut 34, the assembly frame 32 and the robotic arm 1 are properly connected. The mounting component 35 is fastened, thereby fixing the spray head 31 to the rear of the robotic arm 1. The coordinated action of bolt 33 and nut 34 ensures stable installation of the spray head 31. Next, the furniture to be painted is placed on the placement mechanism 4 at the top of the placement box 2. The placement mechanism 4, through its own structure and contact with the furniture, provides support and positioning, preventing displacement during painting. The stable placement of the furniture is achieved through the cooperation of the placement mechanism 4 and the placement box 2. The robotic arm 1 is then activated, performing multi-dimensional movements according to a preset program. The movement of the robotic arm 1 causes the spray head 31, fixed at the rear, to move synchronously. During this movement, the spray head 31 sprays paint onto the furniture on the placement mechanism 4. Simultaneously, the paint-blocking mechanism 5 at the rear of the placement box 2 is activated, unfolding and surrounding the painting area to prevent the paint sprayed by the spray head 31 from spreading outwards. Through the cooperation of the paint-blocking mechanism 5 and the placement box 2, the painting area is sealed and protected. When maintenance of the spray head 31 is required, the bottom of bolt 33 is unscrewed. Remove nut 34 and bolt 33 from the holes in the assembly frame 32 and mounting component 35. Then, the nozzle 31 and the assembly frame 32 can be removed from the robot arm 1. After maintenance, repeat the above installation steps to reinstall the nozzle 31 onto the robot arm 1. Through the coordinated operation of the components of the quick-release mechanism 3, the nozzle 31 can be quickly disassembled and assembled. Throughout the process, the robot arm 1, the placement box 2, the quick-release mechanism 3, the placement mechanism 4 and the paint blocking mechanism 5 work together to achieve automated painting of household products.

[0020] Reference Figures 4-5 The placement mechanism 4 includes two placement plates 41. The bottoms of the two placement plates 41 are respectively installed on the front and rear sides of the top of the placement box 2. Multiple positioning support nails 42 are fixedly connected to the top of the two placement plates 41. Bolts 43 are threadedly connected to the left and right sides of the two placement plates 41. Nuts 44 are threadedly connected to the bottom of the two bolts 43. Stable components 45 are provided on the left and right sides of the top of the placement box 2. Specifically, firstly, the placement mechanism 4 is assembled and fixed. Two placement plates 41 are placed on the front and rear sides of the top of the placement box 2, respectively, aligning the mounting holes at the left and right ends of the placement plates 41 with the stabilizing components 45 on the left and right sides of the top of the placement box 2. Then, bolt 3 43 is inserted through the top of the mounting holes of the placement plates 41 until its bottom penetrates the stabilizing component 45. Next, nut 2 44 is fitted onto the bottom external thread of bolt 3 43 and tightened. Through the thread engagement of bolt 3 43 and nut 2 44, and the support and limiting effect of the stabilizing component 45 on the placement plates 41, the placement is achieved. The fixed connection between the placement plate 41 and the placement box 2 prevents the placement plate 41 from shifting during subsequent operations. Next, the furniture piece to be painted is placed on top of the two placement plates 41, with the bottom of the furniture piece contacting the positioning support pins 42 fixedly connected to the placement plates 41. Through point contact between the positioning support pins 42 and the bottom of the furniture piece, the contact area between the furniture piece and the placement plate 41 is reduced. Simultaneously, the positioning support pins 42 provide circumferential constraint to the furniture piece, preventing it from sliding or shifting during painting, thus achieving precise positioning of the furniture piece on the placement mechanism 4. When the robotic arm 1... When the spray nozzle 31 starts the painting operation, the placement mechanism 4, through the load-bearing function of the placement plate 41, the limiting function of the positioning support nail 42, and the fixing structure formed by bolt 3 43, nut 2 44 and the stabilizing component 45, keeps the furniture in a stable state at all times. This ensures that the paint sprayed by the spray nozzle 31 can evenly cover the surface of the furniture and avoid the deviation of the painting effect caused by the shaking of the furniture. If it is necessary to adapt to furniture of different sizes, nut 2 44 can be unscrewed first, bolt 3 43 can be removed from the placement plate 41 and the stabilizing component 45, and the two placement plates 41 can be adjusted on the top of the placement box 2. Adjust the front and rear spacing, then re-pass bolt 3 43 through the placement plate 41 and the stabilizing component 45, and tighten nut 2 44 to complete the fixation. By adjusting the position of the placement plate 41 and the distribution of the positioning support nails 42, the placement of furniture items of different sizes can be adapted. Throughout the process, the cooperation between the placement plate 41 and the placement box 2 provides a stable bearing foundation for the furniture items. The cooperation between the positioning support nails 42 and the furniture items enables the precise positioning of the furniture items. The cooperation between bolt 3 43, nut 2 44 and the stabilizing component 45 enables the fixation and position adjustment of the placement plate 41.

[0021] Reference Figures 1-3 The paint blocking mechanism 5 includes a base plate 51, the top of which is slidably connected to the bottom rear side of the placement box 2. An outer frame 52 is fixedly connected to the top of the base plate 51, and a top block 53 is fixedly connected to the top inner side of the outer frame 52. Movable components 54 are provided around the bottom of the base plate 51. The two placement plates 41 are made of stainless steel 304, and the multiple positioning support nails 42 are made of nylon 66. The base plate 51 is made of stainless steel 304, the outer frame 52 is made of polycarbonate sheet, and the top block 53 is made of stainless steel 304. Specifically, before the equipment starts the painting operation, the paint blocking mechanism 5 is in its initial state. The base plate 51 is positioned at a preset initial position behind the placement box 2 via the moving components 54 around its bottom. The outer frame 52 is in a retracted state. After the placement mechanism 4 completes the positioning of the furniture item to be painted, the equipment sends a start signal, and the moving components 54 begin to work, driving the base plate 51 to move along the sliding trajectory at the bottom of the rear side of the placement box 2 until the base plate 51 moves to a preset working position corresponding to the rear side of the painting area. Through the cooperation of the moving components 54 and the base plate 51, the paint blocking mechanism is activated. After precise adjustment of the working position of the outer frame 52, it unfolds under the action of the drive structure. The top block 53 moves synchronously with the unfolding of the outer frame 52 until the outer frame 52 is fully unfolded and surrounds the rear and sides of the painting area. The top block 53 then forms a closed structure with the top of the outer frame 52. Through the cooperation of the outer frame 52 and the top block 53, a barrier is constructed to prevent paint from spreading. At the same time, the outer frame 52 is made of polycarbonate board, allowing operators to observe the internal work situation of the painting area through the outer frame 52. Through the combination of the material characteristics and structural design of the outer frame 52, a barrier is formed to prevent paint from spreading. The system provides both protection and observation. During the painting process, as the robotic arm 1 drives the spray nozzle 31, the paint sprayed from the nozzle 31 spreads outwards. When the spreading paint comes into contact with the outer frame 52, the base plate 51, or the top block 53, it is blocked by these components and cannot spread outside the equipment. The base plate 51 and the top block 53 are made of 304 stainless steel, which can resist the corrosion of solvents in the paint and prevent damage to components due to long-term contact with paint mist. Through the combination of the material characteristics of the base plate 51 and the top block 53 and the blocking structure, the durability of the paint blocking mechanism 5 is ensured. When the painting operation is completed... After completion, the equipment sends a reset signal. The outer frame 52 retracts to its initial state, and the top block 53 retracts back to its original position along with the outer frame 52. Then, the moving component 54 works again, driving the base plate 51 back to the initial position on the rear side of the placement box 2 along the original sliding trajectory. Through the cooperation of the moving component 54 and the base plate 51, the paint blocking mechanism 5 is reset. After the reset is completed, the operator can easily take out the painted furniture pieces on the placement mechanism 4. Through the unfolding and resetting action of the paint blocking mechanism 5, the anti-spread effect during the painting process is ensured, and the furniture pieces can be taken out and placed without affecting the operation.

[0022] Reference Figures 1-2 The mounting component 35 includes a mounting plate 351, the top of which is fixedly connected to the bottom of the robotic arm 1. Bolts 352 are threaded around the top of the mounting plate 351. The stabilizing component 45 includes two locking bodies 451, the left and right sides of which are fixedly connected to the left and right sides of the same placement box 2. Lock grooves 452 are installed on the top of each of the two locking bodies 451. The moving component 54 includes multiple legs 541, the top of which is fixedly connected to the bottom of the base plate 51. Wheels 542 are rotatably connected to the bottom of each of the multiple legs 541. Specifically, first, assemble the mounting component 35 by attaching the mounting plate 351 to the bottom of the robotic arm 1, aligning the holes around the top of the mounting plate 351 with the pre-set mounting holes on the bottom of the robotic arm 1. Then, insert the bolts 352 one by one into the holes on the mounting plate 351 and the robotic arm 1 and tighten them. Through the cooperation of the bolts 352 and the mounting plate 351, the mounting plate 351 is fixed at the bottom of the robotic arm 1, providing a stable base for the subsequent installation of the quick-release mechanism 3. Next, assemble the placement mechanism 4 and the stabilizing component 45 by placing the placement plate 41 in the placement box. 2. At the top, align the holes on the left and right sides of the placement plate 41 with the lock grooves 452 on the top of the lock body 451. The left and right sides of the lock body 451 are fixed to the left and right sides of the placement box 2, respectively. Then, pass the bolt 3 43 through the holes of the placement plate 41 and embed it into the lock groove 452. Then tighten the nut 2 44. Through the cooperation of the lock body 451, the lock groove 452, the bolt 3 43, and the nut 2 44, the placement plate 41 is fixed at the top of the placement box 2, preventing the placement plate 41 from shifting when carrying furniture. When the paint blocking mechanism 5 needs to be adjusted, the moving component 54 starts to work. The top of the tripod 541 is fixed to the bottom perimeter of the base plate 51. The bottom of the tripod 541 is rotatably connected to the wheels 542. When the base plate 51 is pushed, the wheels 542 roll along the track at the bottom rear of the placement box 2, moving the base plate 51, the top outer frame 52, and the top block 53. Through the cooperation of the tripod 541 and the wheels 542, the paint blocking mechanism 5 can flexibly switch between the working position and the initial position. Before the painting operation, the wheels 542 drive the base plate 51 to move the outer frame 52 to the rear of the painting area, and then the outer frame 52 unfolds to allow the paint to be applied. After the paint blocking operation, the base plate 51 is pushed again, and the wheel 542 drives it back to the initial position without affecting the picking and putting of furniture items. Throughout the process, the quick-release mechanism 3 and the robot arm 1 are stably connected by the mounting plate 351 and bolt 352 of the mounting component 35. The placement plate 41 is accurately fixed on the placement box 2 by the bolt 43 and nut 44 of the locking body 451 and locking groove 452 of the stabilizing component 45 and the placement plate 41. The paint blocking mechanism 5 can be easily moved by the foot 541 and wheel 542 of the moving component 54.

[0023] Working principle: First, assemble the mounting component 35, which is the core foundation for connecting the quick-release mechanism 3 and the robotic arm 1. During operation, attach the mounting plate 351 to the bottom of the robotic arm 1, ensuring that the pre-set mounting holes around the top of the mounting plate 351 are precisely aligned with the corresponding holes on the bottom of the robotic arm 1. Then, insert the bolts 352 one by one into the aligned holes of the mounting plate 351 and the robotic arm 1, and tighten the bolts 352 clockwise until they cannot be rotated. Through the thread engagement between the bolts 352 and the mounting plate 351, the mounting plate 351 is firmly fixed to the bottom of the robotic arm 1, preventing displacement of the mounting plate 351 during subsequent operations. This provides a stable mounting base for the assembly of the quick-release mechanism 3. Then, assemble the quick-release mechanism 3, attaching the outer wall of the nozzle 31. The assembly frame 32, which is fixedly connected to the upper part, is attached to the surface of the mounting plate 351 of the mounting component 35. The position of the assembly frame 32 is adjusted so that the mounting holes on it are completely aligned with the corresponding holes on the mounting plate 351. Then, two bolts 33 are inserted into the mounting holes on the left and right sides of the top of the assembly frame 32 until the bottom of the bolts 33 is completely extended out of the mounting plate 351. Then, two nuts 34 are respectively fitted onto the bottom external threads of the corresponding bolts 33. The nuts 34 are tightened clockwise. The thread engagement between the bolts 33 and the nuts 34 forms a clamping force, which tightly fixes the assembly frame 32 and the mounting plate 351, thereby achieving stable installation of the spray head 31 on the rear side of the robot arm 1 and ensuring that the spray head 31 can move synchronously with the robot arm 1 without loosening during the subsequent painting process. Next, assemble the placement mechanism 4. This mechanism is crucial for the positioning and support of the furniture pieces to be painted. First, confirm the initial state of the stabilizing component 45. The left and right sides of the two lock bodies 451 are fixedly connected to the left and right sides of the placement box 2, respectively, and the lock grooves 452 on the top of the lock bodies 451 are in a horizontal state. Then, place the two placement plates 41 on the front and back sides of the top of the placement box 2, respectively. Adjust the left and right positions of the placement plates 41 so that the mounting holes on the left and right sides of the placement plates 41 are precisely aligned with the lock grooves 452 on the top of the corresponding lock bodies 451. Insert the bolt 3 43 from the top of the mounting hole of the placement plate 41 until the bottom of the bolt 3 43 penetrates the lock groove 452 and extends out of the bottom of the lock body 451. Then, put the nut 2 44 on the bottom external thread of the bolt 3 43 and tighten the nut 2 44 clockwise. Through the thread engagement of the bolt 3 43 and the nut 2 44, and the lock body 451 and lock groove, the lock body 451 and lock groove are aligned. 452 provides limiting support for the placement plate 41, achieving a fixed connection between the placement plate 41 and the placement box 2, preventing the placement plate 41 from shifting when carrying furniture pieces. If the furniture pieces to be painted are of different sizes and the spacing of the placement plates 41 needs to be adjusted, the second nut 44 can be unscrewed counterclockwise first, and the third bolt 43 can be removed from the placement plate 41 and the locking groove 452. The placement plate 41 can be pushed back and forth along the top of the placement box 2 to the appropriate position. Then, the above steps of inserting bolts and tightening nuts are repeated to complete the fixation. At the same time, multiple positioning support nails 42 are fixedly connected to the top of the placement plate 41. The positioning support nails 42 are made of nylon 66 material. Through the point contact between the positioning support nails 42 and the bottom of the furniture pieces, the contact area between the furniture pieces and the placement plate 41 is reduced, preventing the paint from sticking to the placement plate 41 during painting. The positioning support nails 42 can also form a circumferential constraint on the furniture pieces to prevent them from sliding or shifting. The pre-preparation of the paint blocking mechanism 5 is completed. This mechanism is used to block the spread of paint mist during the painting process. The base plate 51 of the paint blocking mechanism 5 is made of stainless steel 304 to resist paint mist corrosion. The top of the base plate 51 is slidably connected to the bottom of the rear side of the placement box 2. The top of the base plate 51 is fixedly connected to the outer frame 52, which is made of polycarbonate board. The top of the inner side of the outer frame 52 is fixedly connected to the top of the top block 53, which is made of stainless steel 304. Among the moving components 54 around the bottom of the base plate 51, the tops of multiple legs 541 are fixed to the bottom of the base plate 51. The bottom of the legs 541 is rotatably connected to wheels 542. In the initial state, the outer frame 52 is in the retracted state. The base plate 51 is stopped at the preset initial position on the rear side of the placement box 2 by the wheels 542 to ensure that it does not affect the placement of the furniture items to be painted. After the pre-assembly of each module of the equipment is completed, the positioning stage of the furniture piece to be painted is entered. The operator places the furniture piece to be painted steadily on the top of the two placement plates 41 of the placement mechanism 4, so that the bottom of the furniture piece is in full contact with the positioning support pins 42 on the placement plate 41. Through the point contact support and circumferential constraint of the positioning support pins 42, the furniture piece is accurately positioned on the placement mechanism 4, ensuring that the center of the furniture piece is aligned with the center of the preset painting trajectory of the robotic arm 1, and avoiding the situation of local missed spraying or over-spraying in subsequent painting. Then the painting operation is started. After the equipment is powered on, the paint blocking mechanism 5 is triggered. The wheels 542 of the moving component 54 roll along the sliding track at the bottom of the rear side of the placement box 2 under the action of the drive structure, driving the base plate 51 and the top frame 52 and top block 53 to move towards the painting area until the base plate 51 moves to the preset working position corresponding to the rear side of the painting area. The wheels 542 stop rolling. Then the outer frame 52 unfolds outward under the action of the drive structure. The top block 53 moves outward synchronously with the unfolding of the outer frame 52 until the outer frame 52 is fully unfolded and surrounds the rear and sides of the painting area. The top block 53 and the top of the outer frame 52 form a closed structure, creating a closed barrier to prevent the spread of paint mist. At the same time, the operator can observe the operation inside the painting area through the polycarbonate outer frame 52 and monitor the painting progress and effect in real time. After the paint blocking mechanism 5 is in place, the robotic arm 1 starts multi-dimensional movement according to the preset program. The movement of the robotic arm 1 drives the nozzle 31, which is fixed at the rear by the quick-release mechanism 3, to move synchronously. During the movement, the nozzle 31 sprays paint at a preset flow rate. The paint evenly covers the surface of the furniture on the placement mechanism 4 along the nozzle 31. During the painting process, the placement mechanism 4 maintains the stability of the placement plate 41 through the bearing effect of the placement plate 41, the fixing structure formed by the bolt 3 43, the nut 2 44 and the stabilizing component 45, thereby ensuring that the furniture is always in a fixed position and avoiding deviation in the painting effect due to the shaking of the furniture. At the same time, the nozzle 31 achieves full coverage painting of all surfaces of the furniture with the multi-dimensional movement of the robotic arm 1. The outer frame 52, the base plate 51 and the top block 53 of the paint blocking mechanism 5 prevent the excess paint mist sprayed by the nozzle 31 from spreading to the outside of the equipment. The stainless steel 304 material of the base plate 51 and the top block 53 effectively resists the corrosion of solvents in the paint and prevents the parts from being damaged due to long-term contact with paint mist, ensuring the durability of the paint blocking mechanism 5. After the painting operation is completed, the equipment automatically enters the reset phase. The robotic arm 1 drives the spray nozzle 31 to stop painting and reset to the initial position along the original trajectory to avoid the spray nozzle 31 staying in the painting area and affecting subsequent operations. Then, the outer frame 52 of the paint blocking mechanism 5 first retracts to the initial state, and the top block 53 retracts back to its original position with the outer frame 52. Then, the wheel 542 of the moving component 54 rolls in the opposite direction, driving the base plate 51 and the top outer frame 52. The top block 53 returns to the initial position behind the placement box 2, and the wheel 542 stops rolling. At this time, the paint blocking mechanism 5 has completed the reset and does not affect the operator's loading and unloading of furniture items. The operator then carefully removes the painted furniture from the placement mechanism 4, checks the painting effect, and performs maintenance on the nozzle 31. The nut 34 at the bottom of the bolt 33 can be unscrewed counterclockwise, and the bolt 33 can be removed from the hole between the assembly frame 32 and the mounting plate 351. The nozzle 31 and the assembly frame 32 can then be removed from the robot arm 1. After maintenance, the assembly steps of the quick-release mechanism 3 are repeated to reinstall the nozzle 31 onto the robot arm 1, achieving quick disassembly and assembly of the nozzle 31 and reducing equipment downtime. Operators clean the paint mist remaining on the outer frame 52, base plate 51, and top block 53 of the paint blocking mechanism 5, check whether the bolts 352 of the mounting component 35, the bolts 33 and nuts 34 of the quick release mechanism 3, and the bolts 43 and nuts 44 of the placement mechanism 4 are loose, and tighten them clockwise if they are loose. Check whether the positioning support pins 42 are intact and whether the wheels 542 of the moving component 54 roll smoothly, and ensure that all components are in normal working condition.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic painting device for household goods, comprising a robotic arm (1), characterized in that: The bottom of the robotic arm (1) is provided with a placement box (2), the rear side of the robotic arm (1) is provided with a quick release mechanism (3), the top of the placement box (2) is provided with a placement mechanism (4), and the rear side of the placement box (2) is provided with a paint blocking mechanism (5). The quick-release mechanism (3) includes a nozzle (31), the top of which is mounted on the rear side of the robotic arm (1). An assembly frame (32) is fixedly connected to the upper part of the outer wall of the nozzle (31). Bolts (33) are threadedly connected to the top left and right sides of the assembly frame (32). Nuts (34) are threadedly connected to the bottom of the two bolts (33). An installation component (35) is provided at the bottom of the robotic arm (1).

2. The automatic spray painting equipment for household goods according to claim 1, characterized in that: The placement mechanism (4) includes two placement plates (41). The bottoms of the two placement plates (41) are respectively installed on the front and rear sides of the top of the placement box (2). The tops of the two placement plates (41) are fixedly connected with multiple positioning support nails (42). The left and right sides of the two placement plates (41) are threaded with bolts three (43). The bottoms of the two bolts three (43) are threaded with nuts two (44). The top left and right sides of the placement box (2) are provided with stabilizing components (45).

3. The automatic spray painting equipment for household goods according to claim 1, characterized in that: The paint blocking mechanism (5) includes a base plate (51), the top of which is slidably connected to the bottom rear side of the placement box (2), the top of which is fixedly connected to an outer frame (52), the top of which is fixedly connected to a top block (53), and the bottom of the base plate (51) is provided with moving components (54) around its perimeter.

4. The automatic spray painting equipment for household goods according to claim 2, characterized in that: The two placement plates (41) are made of stainless steel 304, and the plurality of positioning support pins (42) are made of nylon 66.

5. The automatic spray painting equipment for household goods according to claim 3, characterized in that: The base plate (51) is made of stainless steel 304, the outer frame (52) is made of polycarbonate plate, and the top block (53) is made of stainless steel 304.

6. The automatic spray painting equipment for household goods according to claim 1, characterized in that: The mounting assembly (35) includes a mounting plate (351), the top of which is fixedly connected to the bottom of the robotic arm (1), and bolts (352) are threaded around the top of the mounting plate (351).

7. The automatic spray painting equipment for household goods according to claim 2, characterized in that: The stabilizing component (45) includes two lock bodies (451), the left and right sides of the two lock bodies (451) are respectively fixedly connected to the left and right sides of the same placement box (2), and the top of the two lock bodies (451) is equipped with a lock groove (452).

8. The automatic spray painting equipment for household goods according to claim 3, characterized in that: The moving component (54) includes a plurality of legs (541), the tops of which are fixedly connected to the bottom perimeter of the base plate (51), and the bottoms of which are rotatably connected to wheels (542).

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