A ring-shaped spraying device

Abstract

This utility model relates to the field of spraying equipment technology, and more particularly to a ring-shaped spraying device. Its technical solution includes a pair of H-shaped supports and multiple metal tubes, as well as a chain conveying mechanism disposed on top of the H-shaped supports. The chain conveying mechanism includes a pair of chains, one of which has a clamping mechanism for fixing the metal tubes, and the other chain has a rotating mechanism for driving the metal tubes to rotate. This utility model utilizes the coordination of the chain conveying mechanism, clamping mechanism, rotating mechanism, spraying mechanism, and heating mechanism. During use, the metal tubes are continuously conveyed by the chain, sprayed, and immediately dried by the heating tubes. After drying, they automatically fall into a storage tray, and new tubes can be loaded simultaneously. No machine downtime for disassembly and installation is required, ensuring continuous production and avoiding inefficiency. Furthermore, unloading after drying prevents defects such as indentations and scratches caused by contact before the coating is dry, ensuring the integrity and appearance of the coating.

Description

Technical Field

[0001] This utility model relates to the field of spraying equipment technology, and in particular to a ring spraying device. Background Technology

[0002] Currently, when spraying the outer wall of metal pipes, a common method is a circular spraying technique where the metal pipe rotates while the spray gun remains stationary. The core principle is to achieve 360° uniform coating through the relative motion of the two: during spraying, the metal pipe is typically clamped and rotates at a constant speed around its own axis, while a fixed circular spray gun (or nozzle assembly) is aligned with the pipe surface. While moving horizontally along the pipe wall, the rotation of the pipe completes circumferential full-coverage spraying. This method relies on existing automated production line clamping, transmission, and spraying equipment and is a mature application in the industry. However, in current technology, the sprayed metal pipe needs to be disassembled before installing the part to be sprayed, which interrupts production continuity and leads to low efficiency. Furthermore, if some sprayed metal pipes are disassembled before they are fully dried, the still-soft coating can cause indentations, scratches, or even adhesion and detachment during disassembly, leaving obvious marks that damage the coating's integrity and appearance, thus easily resulting in finished product defects. Utility Model Content

[0003] The purpose of this invention is to address the problems existing in the background art by proposing a ring-shaped spraying device.

[0004] The technical solution of this utility model is as follows: A ring-shaped spraying device includes a pair of H-shaped supports and multiple metal tubes, and further includes: a chain conveying mechanism disposed on the top of the H-shaped supports, the chain conveying mechanism including a pair of chains, one of the chains having a clamping mechanism for fixing the metal tubes, and the other chain having a rotating mechanism for driving the metal tubes to rotate, the clamping mechanism and the rotating mechanism being located at opposite ends of the metal tubes; a spraying mechanism disposed on the outer wall of one of the H-shaped supports; and a heating mechanism installed in the middle of the H-shaped supports directly opposite the sprayed metal tubes.

[0005] Optionally, the chain conveying mechanism includes a connecting shaft rotatably connected to the top of the H-shaped bracket. Both ends of the connecting shaft are fixedly sleeved with gears that mesh with the corresponding chain ends. A support is fixedly connected to the top outer wall of one of the H-shaped brackets. A first motor is fixedly connected to the upper surface of the support. The output shaft of the first motor is fixedly connected to the end of the corresponding connecting shaft.

[0006] Optionally, each end of the H-shaped bracket is provided with a pair of slots, and both ends of the connecting shaft are fixedly fitted with sleeves that fit into the slots.

[0007] Optionally, the clamping mechanism and the rotating mechanism include a U-shaped clamping block clamped on the chain. Connecting rods are fixedly connected to the inner walls of both ends of the U-shaped clamping block. The ends of the connecting rods away from the U-shaped clamping block are fixedly connected to the chain. Sleeves are fixedly connected to each U-shaped clamping block. A cylinder aligned with one end of a metal tube is fixedly connected inside one of the sleeves. A second motor aligned with the other end of the metal tube is fixedly connected inside the other sleeve. A clamping plate is fixedly connected to the output shaft of the second motor and the piston rod of the cylinder. A guide block is fixedly connected to the end of the clamping plate away from the second motor and the cylinder.

[0008] Optionally, the spraying mechanism includes a support frame fixedly connected to the outer wall of another H-shaped bracket, a slide plate slidably connected to the support frame, a spray gun aligned with the metal tube at the top of the slide plate, and a drive mechanism on the support frame for driving the slide plate to slide along the outer wall of the metal tube.

[0009] Optionally, a pair of storage trays for holding metal tubes are also fixedly connected to the middle of one of the H-shaped supports.

[0010] Optionally, a pair of reinforcing rods are fixedly connected to the middle of the pair of H-shaped brackets, and the heating mechanism includes a base plate fixedly connected to the middle of the reinforcing rods, and the base plate is provided with a heating tube aligned with the sprayed metal tube.

[0011] In summary, this application includes at least one of the following beneficial technical effects: This invention utilizes a chain conveying mechanism, clamping mechanism, rotating mechanism, spraying mechanism, and heating mechanism in conjunction with each other. During operation, the metal tube is continuously conveyed by the chain, sprayed, and then immediately dried by the heating tube. After drying, it automatically falls into the storage tray, and new tubes can be loaded simultaneously. No machine downtime or disassembly / reinstallation is required, ensuring continuous production and avoiding inefficiency. Furthermore, unloading only after drying prevents defects such as indentations and scratches caused by contact with undried coatings, ensuring coating integrity and appearance. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of a ring-shaped spraying device according to this utility model is provided; Figure 2 for Figure 1 A schematic diagram of the split structure; Figure 3 for Figure 2 A partial breakdown diagram.

[0013] Reference numerals: 1. H-shaped bracket; 11. Slot; 12. Connecting shaft; 13. Gear; 14. Chain; 15. Sleeve; 16. Support; 17. First motor; 2. Metal tube; 21. U-shaped clamp; 22. Sleeve; 23. Cylinder; 24. Connecting rod; 25. Second motor; 26. Clamping plate; 27. Guide block; 3. Support frame; 31. Slide plate; 32. Drive mechanism; 33. Spray gun; 4. Base plate; 41. Heating tube; 5. Reinforcing rod; 6. Storage tray. Detailed Implementation

[0014] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0015] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0016] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0020] like Figures 1 to 3 As shown, the present invention proposes a ring-shaped spraying device, comprising a pair of H-shaped supports 1 and multiple metal tubes 2. The metal tubes 2 serve as the spraying targets, and are fixed and rotated by a clamping mechanism and a rotating mechanism to complete the outer wall spraying and drying processes. Each end of the H-shaped support 1 has a pair of slots 11, which are used to engage a sleeve 15, achieving a rotatable connection and positioning between the connecting shaft 12 and the H-shaped support 1. The chain conveying mechanism includes a pair of chains 14, which are driven by gears 13 and connected to the clamping mechanism and the rotating mechanism, moving the metal tubes 2 between processes. The clamping mechanism and the rotating mechanism are located at opposite ends of the metal tubes 2.

[0021] Among them, such as Figures 1 to 2 As shown, both ends of the connecting shaft 12 are fixedly fitted with retaining sleeves 15 that engage with retaining slots 11. The retaining sleeves 15 are fixedly fitted onto both ends of the connecting shaft 12 and engage with the retaining slots 11, allowing the connecting shaft 12 to be stably mounted on the H-shaped bracket 1 and rotatable. The top of the H-shaped bracket 1 is equipped with a chain transmission mechanism, which includes a connecting shaft 12 rotatably connected to the top of the H-shaped bracket 1. Both ends of the connecting shaft 12 are fixedly fitted with gears 13 that mesh with the ends of corresponding chains 14. The gears 13 are fixedly fitted onto both ends of the connecting shaft 12 and mesh with the chains 14, converting the rotation of the connecting shaft 12 into the transmission motion of the chains 14. A support 16 is fixedly connected to the top outer wall of one of the H-shaped brackets 1. A first motor 17 is fixedly connected to the upper surface of the support 16. The first motor 17 is mounted on the support 16, and its output shaft is connected to the connecting shaft 12, providing power to the chain transmission mechanism. The output shaft of the first motor 17 is fixedly connected to the end of the corresponding connecting shaft 12.

[0022] In addition, such as Figures 1 to 3As shown, one chain 14 is equipped with a clamping mechanism for fixing the metal tube 2, and the other chain 14 is equipped with a rotating mechanism for driving the metal tube 2 to rotate. Both the clamping and rotating mechanisms include U-shaped clamps 21 engaged on the chains 14. Connecting rods 24 are fixedly connected to the inner walls of both ends of the U-shaped clamps 21, connecting the U-shaped clamps 21 to the chains 14, allowing the U-shaped clamps 21 to move synchronously with the chains 14. The ends of the connecting rods 24 furthest from the U-shaped clamps 21 are fixedly connected to the chains 14. Sleeves 22 are fixedly connected to the U-shaped clamps 21. One chain 14 has a thinner sleeve 22, which houses a cylinder 23. The other chain 14 has a thicker sleeve 22, which houses a second motor 25. The sleeves 22 are fixed to the U-shaped clamps 21 to accommodate and fix the cylinder 23 and the second motor 25. One sleeve 22 has a cylinder 23 fixedly connected inside, aligned with one end of the metal tube 2. The cylinder 23 is installed inside the sleeve 22, and its piston rod is connected to a clamping plate 26. The clamping plate 26 is driven to clamp or release the metal tube 2 by extension and retraction. The other sleeve 22 has a second motor 25 fixedly connected inside, aligned with the other end of the metal tube 2. The second motor 25 is installed inside the sleeve 22, and its output shaft is connected to the clamping plate 26, driving the metal tube 2 to rotate around its own axis. The output shaft of the second motor 25 and the piston rod of the cylinder 23 are both fixedly connected to the clamping plate 26. The clamping plate 26 is connected to the piston rod of the cylinder 23 and the output shaft of the second motor 25, respectively, and clamps the metal tube 2 through the cooperation of guide blocks 27. The end of the clamping plate 26 away from the second motor 25 and the cylinder 23 is fixedly connected to the guide blocks 27. The guide blocks 27 are fixed to the end of the clamping plate 26 and inserted into both ends of the metal tube 2 to assist in positioning and clamping the metal tube 2.

[0023] It is worth noting that, such as Figures 1 to 2As shown, one of the H-shaped supports 1 has a spraying mechanism on its outer wall. The spraying mechanism includes a support frame 3 fixedly connected to the outer wall of another H-shaped support 1. A pair of storage trays 6 for holding metal tubes 2 are also fixedly connected to the middle of one of the H-shaped supports 1. The storage trays 6 are fixed in the middle of the H-shaped support 1 and are used to hold the dried metal tubes 2. A slide plate 31 is slidably connected to the support frame 3. A spray gun 33 is provided at the top of the slide plate 31 and is aimed at the metal tube 2 to spray a coating onto the outer wall of the metal tube 2. The support frame 3 has a drive mechanism 32 that drives the slide plate 31 to slide along the outer wall of the metal tube 2. The drive mechanism 32 is set on the support frame 3 and drives the slide plate 31 to slide, adjusting the position of the spray gun 33 to complete the spraying. The drive mechanism 32 is usually a transmission device composed of a motor, a lead screw and slider assembly or a gear rack and guide rail. Its working principle is as follows: the motor outputs power to drive the lead screw to rotate, and through the threaded engagement between the lead screw and the slider, the rotational motion is converted into the linear motion of the slider; the slider is connected to the slide plate 31, which in turn drives the spray gun 33 fixed on the slide plate 31 to move horizontally along the guide rail on the support frame 3, so as to achieve axial uniform spraying on the outer wall of the metal tube 2. This structure can precisely control the moving speed and stroke of the spray gun to ensure the uniformity of the coating.

[0024] Furthermore, such as Figures 1 to 2 As shown, a heating mechanism is installed in the middle of the H-shaped bracket 1, which is directly opposite the sprayed metal tube 2. A pair of reinforcing rods 5 are fixedly connected to the middle of the pair of H-shaped brackets 1. The heating mechanism includes a base plate 4 fixedly connected to the middle of the reinforcing rods 5. A heating tube 41 aligned with the sprayed metal tube 2 is provided on the base plate 4. The heating tube 41 is a component used to heat and dry the sprayed metal tube 2. It is set on the base plate 4, aligned with the sprayed metal tube 2, and heats the coating to accelerate drying.

[0025] In this embodiment, when using the annular spraying device, the two ends of the metal tube 2 are aligned with the guide blocks 27 inside the U-shaped clamping blocks 21 on the second motor 25. Then, the cylinder 23 is started, and its piston rod drives the clamping plate 26 to cooperate with the guide blocks 27 to clamp the metal tube 2. After that, the first motor 17 is started, and the output shaft drives the connecting shaft 12 to rotate, so that the gears 13 at both ends drive the chain 14 to rotate. The chain drives the U-shaped clamping blocks 21 to move through the connecting rod 24. At the same time, the second motor 25 drives the metal tube 2 to rotate around its own axis.

[0026] When the metal tube 2 moves to the spray gun 33, the drive mechanism 32 drives the slide plate 31 to slide along the support frame 3, causing the spray gun 33 to move horizontally along the tube wall, completing circumferential spraying in conjunction with the rotation of the metal tube 2. After spraying, the metal tube 2 continues to move with the chain 14. When it passes the heating tube 41, the heating tube heats the coating to accelerate drying. After drying, the corresponding cylinder 23 is activated to reset and release the metal tube 2, allowing it to fall into the storage tray 6. Throughout the process, when the spraying mechanism starts spraying the metal tube 2, a pair of chains 14 will stop. At this time, the dried metal tube 2 can be collected and loaded, thus realizing continuous loading, feeding, spraying, drying, and collection, avoiding inefficiency and coating damage caused by frequent loading and unloading.

[0027] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A ring-shaped spraying device, comprising a pair of H-shaped supports (1) and a plurality of metal tubes (2), characterized in that, Also includes: A chain conveying mechanism is set on the top of the H-shaped bracket (1). The chain conveying mechanism includes a pair of chains (14). One of the chains (14) is provided with a clamping mechanism for fixing the metal tube (2), and the other chain (14) is provided with a rotating mechanism for driving the metal tube (2) to rotate. The clamping mechanism and the rotating mechanism are located at opposite ends of the metal tube (2). The spraying mechanism is installed on the outer wall of one of the H-shaped supports (1); A heating mechanism is installed in the middle of the H-shaped bracket (1) directly opposite the sprayed metal tube (2).

2. The annular spraying device according to claim 1, characterized in that, The chain conveying mechanism includes a connecting shaft (12) rotatably connected to the top of the H-shaped bracket (1). Both ends of the connecting shaft (12) are fixedly fitted with gears (13) that mesh with the ends of the corresponding chains (14). A support (16) is fixedly connected to the top outer wall of one of the H-shaped brackets (1). A first motor (17) is fixedly connected to the upper surface of the support (16). The output shaft of the first motor (17) is fixedly connected to the end of the corresponding connecting shaft (12).

3. The annular spraying device according to claim 2, characterized in that, The ends of the H-shaped bracket (1) are provided with a pair of slots (11), and the two ends of the connecting shaft (12) are fixedly fitted with sleeves (15) that fit into the slots (11).

4. The annular spraying device according to claim 1, characterized in that, The clamping and rotating mechanisms include U-shaped clamps (21) clamped on the chain (14). Connecting rods (24) are fixedly connected to the inner walls of both ends of the U-shaped clamps (21). The end of the connecting rod (24) away from the U-shaped clamps (21) is fixedly connected to the chain (14). Sleeves (22) are fixedly connected to each U-shaped clamp (21). A cylinder (23) aligned with one end of the metal tube (2) is fixedly connected inside one sleeve (22). A second motor (25) aligned with the other end of the metal tube (2) is fixedly connected inside the other sleeve (22). A clamping plate (26) is fixedly connected to the output shaft of the second motor (25) and the piston rod of the cylinder (23). A guide block (27) is fixedly connected to the end of the clamping plate (26) away from the second motor (25) and the cylinder (23).

5. The annular spraying device according to claim 1, characterized in that, The spraying mechanism includes a support frame (3) fixedly connected to the outer wall of another H-shaped bracket (1), a slide plate (31) slidably connected to the support frame (3), a spray gun (33) aligned with the metal tube (2) is provided at the top of the slide plate (31), and a drive mechanism (32) is provided on the support frame (3) to drive the slide plate (31) to slide along the outer wall of the metal tube (2).

6. The annular spraying device according to claim 1, characterized in that, One of the H-shaped supports (1) is also fixedly connected to a pair of storage trays (6) for holding metal tubes (2) in the middle.

7. The annular spraying device according to claim 1, characterized in that, A pair of reinforcing rods (5) are fixedly connected to the middle of a pair of H-shaped brackets (1). The heating mechanism includes a base plate (4) fixedly connected to the middle of the reinforcing rods (5). A heating tube (41) aligned with the sprayed metal tube (2) is provided on the base plate (4).

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