Annular powder spraying coating device

Abstract

The utility model relates to the technical field of annular powder spraying and coating devices, and discloses an annular powder spraying and coating device which comprises a fixed support and a hanging bracket unit, an annular support is installed on the fixed support, a limiting hole is formed in the annular support, a coating mechanism is arranged on the annular support, a material conveying pipe is arranged in the coating mechanism, and the hanging bracket unit is connected with the annular support. The material conveying pipe is slidably connected with the annular support in a sleeved mode through the limiting hole, a material spraying head is installed at the end, facing the interior of the annular support, of the material conveying pipe, and an L-shaped support is installed at the end, facing the exterior of the annular support, of the material conveying pipe. When the steel pipe is conveyed into the annular support by the hanging bracket unit, one end of the steel pipe penetrates through the idler wheels in the three coating mechanisms, and the L-shaped support drives the material conveying pipe to move towards the outer side of the annular support under the extrusion of the L-shaped support and the idler wheels on the outer wall of the steel pipe, so that the distance capable of uniformly spraying materials is always kept between the material spraying head and the outer wall of the steel pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of annular powder coating device, specifically an annular powder coating device. Background Technology

[0002] Powder coating equipment is a surface treatment technology device. Powder coating equipment forms a high-voltage corona discharge field between the spray gun and the workpiece. When powder particles are sprayed from the nozzle and pass through the discharge area, they will collect a large number of electrons and form negatively charged particles. These negatively charged particles are attracted to the positively charged workpiece under electrostatic attraction. After being baked and cured at high temperature, the powder layer will flow into a uniform film.

[0003] In order to ensure the uniformity of powder coating when applying powder to steel pipes, existing powder coating equipment has abandoned the traditional method of rotating the steel pipe during powder coating and adopted a ring-shaped powder coating structure. This structure does not require the steel pipe to be rotated, and the steel pipe is uniformly coated by the ring-shaped distributed spray guns.

[0004] However, the distance between the powder coating spray gun nozzle and the workpiece is generally 150–300 mm. Within this range, the powder can be evenly distributed on the workpiece surface to form a uniform coating. Too close a distance can easily cause electrical discharge that breaks down the powder coating, while too far a distance may increase powder consumption and reduce production efficiency. In existing annular powder coating devices, when encountering steel pipes of different specifications, the distance between the powder coating spray gun nozzle and the steel pipe changes with the diameter of the steel pipe, leading to problems such as powder coating breakdown or increased powder consumption and reduced production efficiency during coating. Therefore, those skilled in the art have provided an annular powder coating device to solve the problems mentioned in the background art. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a ring-shaped powder coating device to solve the problem that when existing ring-shaped powder coating devices encounter steel pipes of different specifications, the distance between the powder coating nozzle and the steel pipe will increase or decrease with the change of the steel pipe diameter, which will lead to the powder coating being punctured or the amount of powder used being increased and the production efficiency being reduced.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a ring-shaped powder coating device, comprising a fixed bracket and a hanger unit. A ring-shaped bracket is mounted on the fixed bracket, and a limiting hole is formed on the ring-shaped bracket. A threaded hole is formed on the front side of the limiting hole, and a bolt is threaded into the threaded hole. A coating mechanism is provided on the ring-shaped bracket, and the coating mechanism includes a material conveying pipe. The material conveying pipe is slidably connected to the ring-shaped bracket through the limiting hole. A spray head is installed at one end of the material conveying pipe facing inwards from the ring-shaped bracket, and an L-shaped bracket is installed at the other end of the material conveying pipe facing outwards from the ring-shaped bracket. A limiting ring is installed at the end of the material conveying pipe adjacent to the spray head, and a spring is installed at the end of the limiting ring facing the inner wall of the ring-shaped bracket. The spring is sleeved with the material conveying pipe. A roller is installed at the end of the L-shaped bracket facing the spray head.

[0009] Preferably, the coating mechanism is provided in three groups, and the three groups of coating mechanisms are distributed in a triangle on the ring support.

[0010] Preferably, the top of the annular bracket is provided with a slot, and the hanger unit includes a telescopic boom. The slot facilitates the passage of the telescopic boom.

[0011] Preferably, a motor is fixedly installed at one end of the L-shaped bracket. The motor is connected to the roller drive, and the motor drives the roller to rotate in the direction of steel pipe conveying, so as to cooperate with the steel pipe conveying.

[0012] Preferably, one end of the bolt is pressed into contact with the outer wall of the conveying pipe. After the L-shaped bracket drives the conveying pipe to adjust its position, the bolt can be tightened to press and fix the conveying pipe that is slidably inserted in the limiting hole. This method can avoid the problem that the roller disengages from the tail end when the steel pipe is not fully coated, causing the conveying pipe and spray head to shrink and resulting in poor coating effect at the tail end of the steel pipe.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a ring-shaped powder coating device, which has the following features:

[0015] Beneficial effects:

[0016] Through design, when the steel pipe is conveyed into the annular support by the hanger unit, one end of the steel pipe passes between the rollers in the three sets of coating mechanisms. Under the pressure of the L-shaped support and rollers on the outer wall of the steel pipe, the L-shaped support drives the conveying pipe to move outward of the annular support. This ensures that the distance between the spray head and the outer wall of the steel pipe is always maintained so that the spraying material can be sprayed evenly. This avoids the problem that the distance between the spray head and the steel pipe will become farther or closer as the diameter of the steel pipe changes, which would cause the powder coating to be broken or increase the amount of powder used and reduce production efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a ring-shaped powder coating device provided in an embodiment of this application.

[0018] Figure 2 This is a schematic diagram of the structure of the annular support in an annular powder coating device provided in an embodiment of this application.

[0019] Figure 3 This is a schematic diagram of the coating mechanism in a ring-shaped powder coating device provided in an embodiment of this application.

[0020] In the diagram: 1. Fixed bracket; 2. Ring bracket; 201. Groove; 202. Limiting hole; 203. Threaded hole; 4. Coating mechanism; 401. Material conveying pipe; 402. Spray head; 403. Limiting ring; 404. Spring; 405. L-shaped bracket; 406. Roller; 5. Motor; 6. Bolt; 7. Hanger unit. Detailed Implementation

[0021] 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.

[0022] This utility model provides a technical solution: a ring-shaped powder coating device. (Please refer to...) Figure 1 , Figure 2 , Figure 3 The system includes a fixed bracket 1 and a hanger unit 7. An annular bracket 2 is mounted on the fixed bracket 1. A limiting hole 202 is provided on the annular bracket 2. A coating mechanism 4 is provided on the annular bracket 2. The coating mechanism 4 includes a material conveying pipe 401. The material conveying pipe 401 is slidably sleeved with the annular bracket 2 through the limiting hole 202. A spray head 402 is installed at one end of the material conveying pipe 401 facing inwards from the annular bracket 2. An L-shaped bracket 405 is installed at the other end of the material conveying pipe 401 facing the spray head 402. A limiting ring 403 is installed at one end of the limiting ring 403 facing the inner wall of the annular bracket 2. The spring 404 is sleeved with the material conveying pipe 401. A roller 406 is installed at the other end of the L-shaped bracket 405 facing the spray head 402.

[0023] Please see Figure 1 , Figure 2 , Figure 3The coating mechanism 4 is provided in three sets, which are arranged in a triangle on the annular support 2. The top of the annular support 2 has a slot 201. The hanger unit 7 includes a telescopic boom. The slot 201 facilitates the passage of the telescopic boom. One end of the L-shaped bracket 405 is fixedly mounted with a motor 5. The motor 5 is driven by a roller 406. The motor 5 drives the roller 406 to rotate in the direction of steel pipe conveying, which is used to cooperate with the steel pipe conveying. The limiting hole 202 A threaded hole 203 is provided on the front side, and a bolt 6 is connected to the threaded hole 203. One end of the bolt 6 is pressed against the outer wall of the conveying pipe 401. After the L-shaped bracket 405 drives the conveying pipe 401 to adjust its position, the bolt 6 can be tightened to press and fix the conveying pipe 401 that is slidably inserted in the limiting hole 202. This method can avoid the problem that the roller 406 will disengage from the tail end when the steel pipe is not fully coated, causing the conveying pipe 401 and the spray head 402 to shrink, resulting in poor coating effect at the tail end of the steel pipe.

[0024] The powder coating device in this utility model consists of a coating mechanism 4 and a hanger unit 7. The coating mechanism 4 is provided in three sets, which are distributed in a triangle on the annular support 2. A fixed support 1 is installed at the bottom of the annular support 2, which can fix the annular support 2. A slot 201 is provided on the annular support 2. The slot 201 is used for the hanger unit 7 to pass through when moving the steel pipe. A limiting hole 202 is also provided on the annular support 2. A threaded hole 203 is provided on one side of the limiting hole 202, and a bolt 6 is threaded into the threaded hole 203.

[0025] The coating mechanism 4 includes a material conveying pipe 401. One end of the material conveying pipe 401 facing the inside of the annular bracket 2 is connected to a spray head 402. A limit ring 403 is installed at the end of the material conveying pipe 401 adjacent to the spray head 402. A spring 404 is sleeved on the part of the material conveying pipe 401 inside the annular bracket 2. One end of the spring 404 is pressed against the limit ring 403, and the other end of the spring 404 is pressed against the inner wall of the annular bracket 2. An L-shaped bracket 405 is installed at the end of the material conveying pipe 401 outside the annular bracket 2. A roller 406 is rotatably connected to the end of the L-shaped bracket 405 facing the spray head 402. A motor 5 is driven to one side of the roller 406. The motor 5 is fixedly installed to the side wall of the L-shaped bracket 405. The motor 5 drives the roller 406 to rotate in the direction of steel pipe conveying, so as to cooperate with the steel pipe conveying effect.

[0026] When the steel pipe is conveyed into the annular support 2 by the hanger unit 7, one end of the steel pipe passes between the rollers 406 in the three sets of coating mechanisms 4. Under the pressure of the L-shaped support 405 and the rollers 406 on the outer wall of the steel pipe, the L-shaped support 405 drives the conveying pipe 401 to move towards the outside of the annular support 2, so that the distance between the spray head 402 and the outer wall of the steel pipe can always be maintained so that the spraying can be uniform. This avoids the problem that the distance between the spray head 402 and the steel pipe will become farther or closer as the diameter of the steel pipe changes, which would cause the powder coating to be broken or increase the amount of powder used and reduce production efficiency.

[0027] After the L-shaped bracket 405 drives the material conveying pipe 401 to adjust its position, the bolt 6 can be tightened to squeeze and fix the material conveying pipe 401 that is slidably inserted in the limiting hole 202. This method can avoid the problem that the roller 406 will disengage from the tail end when the steel pipe is not fully coated, causing the material conveying pipe 401 and the spray head 402 to shrink and resulting in poor coating effect at the tail end of the steel pipe. After the steel pipe is fully coated, the bolt 6 can be loosened to wait for the next steel pipe to be coated.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover 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 process, method, article, or apparatus.

[0029] In this document, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ring-shaped powder coating device, comprising a fixed bracket (1) and a hanger unit (7), characterized in that: An annular bracket (2) is installed on the fixed bracket (1). A limiting hole (202) is provided on the annular bracket (2). A threaded hole (203) is provided on the front side of the limiting hole (202). A bolt (6) is threaded into the threaded hole (203). A coating mechanism (4) is provided on the annular bracket (2). The coating mechanism (4) includes a material conveying pipe (401). The material conveying pipe (401) is slidably sleeved with the annular bracket (2) through the limiting hole (202). The material conveying pipe (401) faces the annular bracket. A nozzle (402) is installed at one end of the frame (2), and an L-shaped bracket (405) is installed at the end of the conveying pipe (401) facing out of the annular bracket (2). A limiting ring (403) is installed at the end of the conveying pipe (401) adjacent to the nozzle (402). A spring (404) is installed at the end of the limiting ring (403) facing the inner wall of the annular bracket (2). The spring (404) is sleeved with the conveying pipe (401). A roller (406) is installed at the end of the L-shaped bracket (405) facing the nozzle (402).

2. The annular powder coating device according to claim 1, characterized in that: The coating mechanism (4) is provided in three sets, and the three sets of coating mechanisms (4) are distributed in a triangle on the ring support (2).

3. The annular powder coating device according to claim 1, characterized in that: The top of the annular support (2) is provided with a slot (201).

4. The annular powder coating device according to claim 1, characterized in that: A motor (5) is fixedly installed at one end of the L-shaped bracket (405), and the motor (5) is driven by the roller (406).

5. The annular powder coating device according to claim 1, characterized in that: One end of the bolt (6) is pressed into contact with the outer wall of the conveying pipe (401).

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