Rotary rolling type paint spraying device capable of spraying and drying small objects simultaneously

Abstract

The utility model discloses a rotary rolling-over type paint spraying device capable of spraying and drying small articles simultaneously, which comprises a rack, a charging barrel is horizontally arranged on the rack through an inclination adjusting mechanism, a roller is arranged in the charging barrel, a plurality of meshes are arranged on the circumferential side wall of the roller, and the meshes are arranged on the periphery of the charging barrel. A rotating shaft extending outwards is arranged in the center of the outer side of a bottom shell of the roller, a rotating shaft seat is arranged in the center of the outer side of a bottom shell of the charging barrel, the rotating shaft penetrates through the rotating shaft seat, a power driving mechanism is connected to the free end of the rotating shaft, and hot air pipes are arranged on the outer walls of the two sides of a barrel body of the charging barrel respectively. A communicating opening is formed between each hot air pipe and the barrel wall of the material barrel, a filter screen covers each communicating opening, an electric heating pipe is arranged in a pipe cavity of each hot air pipe, and an air blower is arranged at the pipe tail of each hot air pipe. The spraying device is suitable for spraying small objects, flexible and convenient to spray, high in efficiency, uniform in paint surface without dead angles, safe, reliable and small in pollution.

Description

Technical Field

[0001] This utility model relates to the field of spray painting equipment technology, and more specifically to a rotary tumbling spray painting device for small objects that sprays and dries simultaneously. Background Technology

[0002] In the field of industrial spray painting, small items such as plastic products, alloy products, wooden products, and glass products, including plastic beads, glass beads, irregularly shaped beads, toy parts, buttons, hair clips, jewelry accessories, zipper heads, wooden handicrafts, and building blocks, need to be placed in the spray painting room before spray painting. However, these small items are inconvenient to place, difficult to hang, and cannot be handled by hand, so there is a problem with how to arrange them during the spray painting process.

[0003] Current technology for painting small items only allows for methods such as hanging them up or manually placing them in the spray booth, then spraying them from multiple angles with a spray gun, and finally drying them. Due to the presence of hanging ropes and issues with fixing their position on the rack, some areas are not painted properly, resulting in uneven paint thickness. Worse still, there are unpainted areas that require touch-ups, which is time-consuming, labor-intensive, and leads to low painting efficiency. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned defects of the existing technology and provide a rotary tumbling spray painting device for small objects that is suitable for spraying, flexible and convenient spraying, highly efficient, produces a uniform paint surface without dead corners, is safe and reliable, and produces little pollution.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a rotary tumbling type spraying and drying device for small objects, comprising a frame, characterized in that a material cylinder is horizontally mounted on the frame, the material cylinder is horizontally mounted on the frame via an inclination adjustment mechanism, a roller is disposed inside the material cylinder, a plurality of mesh holes are provided on the circumferential sidewall of the roller, a rotating shaft extending outward is disposed at the center of the outer side of the bottom shell of the roller, a rotating shaft seat is disposed at the center of the outer side of the bottom shell of the material cylinder, the rotating shaft is disposed through the rotating shaft seat, a power drive mechanism is connected to the free end of the rotating shaft, a hot air pipe is disposed on each of the two outer walls of the material cylinder, a connecting port is provided between each hot air pipe and the cylinder wall, a filter screen is covered on the connecting port, an electric heating tube is disposed inside the cavity of the hot air pipe, and a blower is disposed at the end of the hot air pipe.

[0006] This invention allows small objects to tumble within a drum, adjusting the optimal tilt angle according to different sizes and specifications, while simultaneously adjusting the power drive speed to tumble the small objects at different angles. This allows the spray gun to spray onto all surfaces, making spraying flexible, convenient, and efficient, resulting in a uniform paint finish without dead corners, making it ideal for spraying small objects. Furthermore, the heating element used for drying is independent of the drum, further isolated by a filter screen, and blown in by a fan to ensure more uniform temperature. This prevents paint mist from directly heating the heating element from flowing back into it and causing a fire hazard, thus improving safety and reliability while achieving rapid drying. Paint mist does not remain inside the drum or the drum itself; it is effectively collected and discharged by an environmental protection device connected to the mist exhaust port at the top of the drum, reducing environmental pollution.

[0007] Preferably, the tilt adjustment mechanism includes the following structure: a pair of swing shafts and a pair of swing shaft seats, wherein the two swing shafts are symmetrically arranged on the outer walls of both sides of the cylinder body, the two swing shafts are connected to the two swing shaft seats in a one-to-one correspondence, the two swing shaft seats are symmetrically mounted on the frame, a swing frame is provided on the outer side of the bottom shell of the cylinder off-center, a power cylinder is provided below the swing frame, and the free end of the cylinder shaft of the power cylinder is hinged to the free end of the swing frame through a universal hinge.

[0008] Adjusting the optimal tilt angle according to different sizes and specifications allows the spray gun to spray all surfaces of small objects, resulting in a uniform and seamless paint finish.

[0009] Preferably, the power drive mechanism includes a power motor and a reducer. The motor shaft of the power motor is connected to the input shaft of the reducer through a belt drive mechanism, and the output shaft of the reducer is axially connected to the rotating shaft.

[0010] The power motor is installed on the wall of the barrel. A base plate is added through a pair of reinforcing ribs. The base plate is separated from the bottom shell of the barrel. The power motor is then installed on the base plate. Because the barrel is hot, the above structure is added to minimize the heat transfer to the power motor. The reducer is installed on the swing frame to keep it at the same level as the rotating shaft seat, so that the power can be output to the drum.

[0011] Preferably, the rotating shaft further includes a rotating sleeve and a solid shaft, wherein the solid shaft is axially connected to the output shaft of the reducer, the rotating sleeve is connected to the center of the outer side of the bottom shell of the drum, the rotating sleeve is sleeved on the solid shaft, a pair of outwardly protruding positioning pins are provided on the side wall of the solid shaft, and a pair of positioning grooves extending axially to the end and having open openings are provided on the side wall of the rotating sleeve, the two positioning pins and the two positioning grooves are matched one-to-one.

[0012] To facilitate easy removal of the roller from the barrel and subsequent cleaning, the rotating shaft is divided into two parts, with a detachable connection where the rotating sleeve fits onto the solid shaft. To avoid affecting the rotational power transmission, positioning grooves and positioning pins are needed to solve the problem of transmission slippage.

[0013] Preferably, a pair of support rollers are provided on the inner wall of the material cylinder, and the wheel surfaces of the two support rollers are tangent to the outer wall of the cylinder.

[0014] The function of the support rollers is to support the rollers, allowing them to run more smoothly and stably, and to have a greater load-bearing capacity, while also reducing the workload on the rotating shaft.

[0015] Preferably, the barrel is provided with a barrel cover, the center of the barrel cover is provided with a paint spray nozzle, and a spray gun holder is provided on the paint spray nozzle.

[0016] The canister cap is closed during painting to prevent paint mist from leaking out and polluting the environment, directing it to environmental protection equipment for discharge, and also to provide insulation.

[0017] The spray gun holder includes a rib plate vertically mounted on the cylinder cover. The rib plate has a plurality of mounting holes evenly spaced along its length. A support screw rod passes through one of the mounting holes. The support screw rod is provided with two pairs of locking nuts. The rib plate is sandwiched between one pair of locking nuts, and a support rod is sandwiched between the other pair of locking nuts. One end of the support rod has a collar fitted on the support screw rod, and the other end of the support rod has a universal joint. A spray gun holder is provided on the universal joint.

[0018] The spray gun holder is adjustable, with adjustable insertion angle and position (up, down, left, and right) to ensure proper painting.

[0019] Preferably, a pair of bulletproof cover mechanisms are provided on the outer side of the cylinder cover. Each bulletproof cover mechanism includes a blocking plate. Each blocking plate is slidably mounted on the frame via a pair of sliding rods. Each blocking plate is provided with a pair of buffer pads. Each buffer pad is provided with a buffer spring between itself and the blocking plate it is located on.

[0020] The paint mist generates internal heat and exerts external pressure, so to ensure the cap is not blown off, a bulletproof cap mechanism is used.

[0021] Preferably, the cylinder cover is provided with a handle. The handle facilitates the removal and installation of the cylinder cover.

[0022] Preferably, the inner wall of the roller is provided with a number of outwardly protruding reinforcing ribs at equal intervals.

[0023] The reinforcing ribs not only strengthen the roller, but also act as mixing blades to stir small objects, ensuring that all surfaces are evenly coated.

[0024] Preferably, a mist outlet is provided on the upper side wall of the cylinder body, and a slag outlet is provided on the lower side wall of the cylinder body.

[0025] The exhaust port will be connected to paint mist environmental treatment equipment to meet safe emission standards and reduce environmental pollution. The slag discharge port is for cleaning the rollers and material cylinders; of course, a trash can should be prepared below it.

[0026] Beneficial effects: This invention allows small objects to tumble within a drum, adjusting the optimal tilt angle according to different sizes and specifications, while simultaneously adjusting the power drive speed to tumble the small objects at different angles. This allows the spray gun to spray onto all surfaces, making spraying flexible, convenient, and efficient, resulting in a uniform paint finish without dead corners, making it ideal for spraying small objects. Furthermore, the heating element used for drying is independent of the drum, further isolated by a filter screen, and blown in by a fan to ensure more uniform temperature. This avoids the risk of paint mist from directly heating the heating element flowing back into it and causing a fire, thus improving safety and reliability while achieving rapid drying. Paint mist does not remain inside the drum or the drum itself; it is effectively collected and discharged by environmental protection equipment connected to the mist exhaust port above the drum, reducing environmental pollution. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 for Figure 1 Rear view;

[0029] Figure 3 This is a schematic diagram of the structure of the material cylinder and roller of this utility model;

[0030] Figure 4 for Figure 3 Structural cross-sectional view of AA;

[0031] Figure 5 This is a schematic diagram of the spray gun holder of this utility model;

[0032] Figure 6 This is a schematic diagram of the structure of the bulletproof cover mechanism of this utility model.

[0033] In the diagram: 1-Frame, 2-Cylinder, 3-Swing shaft, 4-Swing shaft seat, 5-Swing frame, 6-Power cylinder, 7-Roller, 8-Mesh, 9-Rotating shaft, 10-Rotating shaft seat, 11-Power motor, 12-Reducer, 13-Hot air pipe, 14-Connecting port, 15-Blower, 16-Mist outlet, 17-Slag outlet, 18-Reinforcing rib, 19-Cylinder cover, 20-Paint nozzle, 21-Spray gun holder, 22-Rib plate, 23-Mounting hole, 24-Support screw, 25-Locking nut, 26-Support rod, 27-Universal joint, 28-Spray gun clamp, 29-Blocking plate, 30-Slide rod, 31-Buffer pad, 32-Handle, 33-Support roller. Detailed Implementation

[0034] To make the technical means, creative features and objectives of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments.

[0035] Example 1: As Figure 1 and Figure 2 As shown, a rotary tumbling spray-drying device for small objects includes a frame 1, on which a material cylinder 2 is horizontally mounted. The material cylinder has a heat preservation effect. The material cylinder 2 is horizontally mounted on the frame 1 through an inclination adjustment mechanism. The inclination adjustment mechanism includes the following structure: a pair of swing shafts 3 and a pair of swing shaft seats 4. The two swing shafts 3 are symmetrically arranged on the outer walls of both sides of the cylinder body of the material cylinder 2. The two swing shafts 3 are connected to the two swing shaft seats 4 in a one-to-one correspondence. The two swing shaft seats 4 are symmetrically mounted on the frame 1. A swing frame 5 is provided on the outer side of the bottom shell of the material cylinder 2, off-center. A power cylinder 6 is provided below the swing frame 5. The free end of the cylinder shaft of the power cylinder 6 is hinged to the free end of the swing frame 5 through a universal hinge.

[0036] like Figure 3 and Figure 4 As shown, a roller 7 is installed inside the material cylinder 2. A pair of supporting rollers 33 are installed on the inner wall of the material cylinder 2, and the wheel surfaces of the two supporting rollers 33 are tangent to the outer wall of the roller 7. Several mesh holes 8 are provided on the circumferential side wall of the roller 7, which are simply made of wire mesh. A flange is provided at the opening of the roller 7. Six outwardly protruding reinforcing ribs 18 are evenly spaced on the inner wall of the roller 7.

[0037] A rotating shaft 9 extending outward is provided at the center of the outer side of the bottom shell of the drum 7. A rotating shaft seat 10 (with a through hole at the bottom of the drum) is provided at the center of the outer side of the bottom shell of the material cylinder 2. The rotating shaft 9 is disposed through the rotating shaft seat 10. A power drive mechanism is connected to the free end of the rotating shaft 9. The power drive mechanism includes a power motor 11 and a reducer 12. The motor shaft of the power motor 11 is connected to the input shaft of the reducer 12 through a belt drive mechanism. The output shaft of the reducer 12 is axially connected to the rotating shaft 9. The power motor 11 is mounted on the wall of the material cylinder 2. A base plate is attached to the base plate through a pair of reinforcing ribs. The base plate is separated from the bottom shell of the material cylinder 2, and then the power motor 11 is mounted on the base plate.

[0038] A hot air pipe 13 is provided on each of the two outer walls of the cylinder 2. A connecting port 14 is provided between each hot air pipe 13 and the cylinder wall of the cylinder 2. A filter screen is covered on the connecting port 14. An electric heating tube is provided inside the cavity of the hot air pipe 13. A blower 15 is provided at the end of the hot air pipe 13.

[0039] A row of mist inlets 16 is provided on the upper side wall of the cylinder body 2, and a row of slag inlets 17 is provided on the lower side wall of the cylinder body 2.

[0040] A cylinder cover 19 is provided on the cylinder 2, and a paint spray nozzle 20 is provided in the center of the cylinder cover 19. A spray gun holder 21 is provided on the paint spray nozzle 20.

[0041] like Figure 5 As shown, the spray gun holder 21 includes a rib plate 22 mounted vertically on the cylinder cover. Nine mounting holes 23 are evenly spaced along the length of the rib plate 22. A support screw 24 passes through one of the mounting holes 23. Two pairs of locking nuts 25 are provided on the support screw 24. The rib plate 22 is clamped between one pair of locking nuts 25 (tightening and clamping the target object from both sides). A support rod 26 is clamped between the other pair of locking nuts 25. One end of the support rod 26 has a collar that is sleeved on the support screw 24. The other end of the support rod 26 has a universal joint 27. A spray gun holder 28 is provided on the universal joint 27.

[0042] A handle 32 is provided on the cylinder cover 19.

[0043] Example 2: As Figure 6As shown, a pair of bulletproof cover mechanisms are provided on the outer side of the cylinder cover 19. Each bulletproof cover mechanism includes a baffle plate 29. Each baffle plate 29 is slidably mounted on the frame 1 via a pair of slide rods 30 (the frame 1 has through holes corresponding to the slide rods, more specifically, through holes with depth at one end, which can also be called pipes). Each baffle plate 29 is provided with a pair of buffer pads 31 (with a round cap and a telescopic shaft, the telescopic shaft passes through the baffle plate, and a buffer spring is sandwiched between the round cap and the baffle plate). A buffer spring is provided between each buffer pad 31 and its corresponding baffle plate 29.

[0044] The rest is the same as in Example 1.

[0045] Example 3: In order to make the roller easy to disassemble for subsequent cleaning, a rotating shaft 9 extending outward is provided on the center of the outer side of the bottom shell of the roller 7. The output shaft of the reducer 12 is axially connected to the rotating shaft 9. The rotating shaft 9 is divided into two parts, namely, the rotating shaft 9 further includes a rotating sleeve and a solid shaft. The solid shaft is axially connected to the output shaft of the reducer 12, and the rotating sleeve is connected to the center of the outer side of the bottom shell of the roller 7. The rotating sleeve is sleeved on the solid shaft. A pair of outwardly protruding positioning pins are provided on the side wall of the solid shaft. A pair of positioning grooves extending axially to the end and having an open opening are provided on the side wall of the rotating sleeve. The two positioning pins and the two positioning grooves are matched one-to-one.

[0046] The rest is the same as in Example 1.

[0047] Usage: Pour small objects into the drum. According to the size of the objects, cover the drum with the lid, push the baffle plate inward to press the lid down with the cushioning pad, and drive the power cylinder to adjust the tilt angle of the drum. Adjust the angle according to the size and shape of the objects; for example, larger, flatter objects require a larger angle, smaller, rounder objects require a smaller angle, etc. Then select a suitable mounting hole, mainly considering the position of the paint inlet. Assemble the support screw, and then adjust the angle of the support rod. A universal joint can also be used to compensate for the angle. Attach the paint gun. Start the power motor to make the small objects tumble inside the drum. Start the spray gun to spray paint, and start the blower to blow the airflow heated by the heating element into the drum, drying the paint while spraying.

Claims

1. A rotary tumbling type spray painting device for small objects, comprising a frame, characterized in that, A material cylinder is horizontally mounted on the frame, and the material cylinder is horizontally mounted on the frame via an inclination adjustment mechanism. A roller is installed inside the material cylinder, and several mesh holes are provided on the circumferential side wall of the roller. A rotating shaft extending outward is provided at the center of the outer side of the bottom shell of the roller. A rotating shaft seat is provided at the center of the outer side of the bottom shell of the material cylinder, and the rotating shaft is installed through the rotating shaft seat. A power drive mechanism is connected to the free end of the rotating shaft. A hot air pipe is provided on each of the two outer walls of the material cylinder. A communication port is provided between each hot air pipe and the cylinder wall. A filter screen is covered on the communication port. An electric heating tube is installed inside the cavity of each hot air pipe, and a blower is provided at the end of each hot air pipe.

2. The rotary tumbling type spray painting device for small objects with simultaneous spraying and drying according to claim 1, characterized in that, The tilt adjustment mechanism includes the following structure: a pair of swing shafts and a pair of swing shaft seats, wherein the two swing shafts are symmetrically arranged on the outer walls of both sides of the cylinder body, the two swing shafts are connected to the two swing shaft seats in a one-to-one correspondence, the two swing shaft seats are symmetrically mounted on the frame, a swing frame is provided on the outer side of the bottom shell of the cylinder off-center, a power cylinder is provided below the swing frame, and the free end of the cylinder shaft of the power cylinder is hinged to the free end of the swing frame through a universal hinge.

3. The rotary tumbling type spray painting device for small objects with simultaneous spraying and drying according to claim 1, characterized in that, The power drive mechanism includes a power motor and a reducer. The motor shaft of the power motor is connected to the input shaft of the reducer through a belt drive mechanism, and the output shaft of the reducer is axially connected to the rotating shaft.

4. The rotary tumbling type spray painting device for small objects with simultaneous spraying and drying according to claim 3, characterized in that, The rotating shaft further includes a rotating sleeve and a solid shaft, wherein the solid shaft is axially connected to the output shaft of the reducer, the rotating sleeve is connected to the outer center of the bottom shell of the drum, the rotating sleeve is sleeved on the solid shaft, a pair of outwardly protruding positioning pins are provided on the side wall of the solid shaft, and a pair of positioning grooves extending axially to the end and having open openings are provided on the side wall of the rotating sleeve, the two positioning pins and the two positioning grooves are matched one-to-one.

5. The rotary tumbling type spray painting device for small objects with simultaneous spraying and drying according to claim 1, characterized in that, A pair of support rollers are provided on the inner wall of the material cylinder, and the wheel surfaces of the two support rollers are tangent to the outer wall of the cylinder.

6. The rotary tumbling type spray painting device for small objects with simultaneous spraying and drying according to claim 1, characterized in that, The barrel is provided with a barrel cover, and a paint spray nozzle is provided at the center of the barrel cover. A spray gun holder is provided on the paint spray nozzle. The spray gun holder includes a rib plate that is vertically mounted on the barrel cover. A plurality of mounting holes are provided at equal intervals along the length of the rib plate. A support screw rod passes through one of the mounting holes. Two pairs of locking nuts are provided on the support screw rod. The rib plate is sandwiched between one pair of locking nuts, and a support rod is sandwiched between the other pair of locking nuts. One end of the support rod has a collar that is fitted on the support screw rod, and the other end of the support rod has a universal joint. A spray gun holder is provided on the universal joint.

7. The rotary tumbling type spray painting device for small objects with simultaneous spraying and drying according to claim 6, characterized in that, A pair of bulletproof cover mechanisms are provided on the outer side of the cylinder cover. Each bulletproof cover mechanism includes a blocking plate. Each blocking plate is slidably mounted on the frame via a pair of sliding rods. Each blocking plate is provided with a pair of buffer pads. Each buffer pad is provided with a buffer spring between itself and the blocking plate it is located on.

8. The rotary tumbling type spray painting device for small objects with simultaneous spraying and drying according to claim 6 or 7, characterized in that, The cylinder cover is provided with a handle.

9. The rotary tumbling type spray painting device for small objects with simultaneous spraying and drying according to claim 1, characterized in that, The inner wall of the roller is provided with several outwardly protruding reinforcing ribs at equal intervals.

10. The rotary tumbling type spray painting device for small objects with simultaneous spraying and drying according to claim 1, characterized in that, A mist outlet is provided on the upper side wall of the cylinder, and a slag outlet is provided on the lower side wall of the cylinder.

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