Plastic spraying positioning device for plastic-coated steel pipe processing
By designing support and limiting components to support and limit the steel pipe, and combining the distribution design of the high-pressure delivery pump and nozzles, the problems of difficult quick disassembly and uneven powder coating in existing devices are solved, realizing rapid fixing and uniform powder coating of steel pipes, thus improving production efficiency and powder coating quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI ZHOUHAI PIPE IND CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-05-12
AI Technical Summary
Existing plastic-coated steel pipe powder coating equipment is not easy to disassemble and install quickly, resulting in uneven powder coating treatment of steel pipes, affecting the powder coating quality. In addition, the equipment is highly specialized, which increases the time and cost of changing fixtures.
A powder coating positioning device for processing plastic-coated steel pipes was designed. The device uses support components and limiting components to support and limit the steel pipes. Combined with the distribution design of high-pressure delivery pump and nozzles, it can achieve rapid fixing and uniform powder coating of steel pipes.
It enables rapid positioning and fixing of steel pipes and uniform powder coating, improves the flexibility and stability of the powder coating process, reduces production costs and equipment specialization, and enhances powder coating quality and production efficiency.
Smart Images

Figure CN224221622U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic-coated steel pipe processing technology, and in particular to a powder coating positioning device for plastic-coated steel pipe processing. Background Technology
[0002] Powder coating of steel pipes is a surface treatment process that is typically used to give steel pipes a surface coating that provides corrosion resistance, decoration, or functionality. Each specification of steel pipe requires specialized clamping equipment, and the process must be adapted to different production orders and product requirements.
[0003] The existing patent number (CN 221934299 U) discloses a steel pipe powder coating device that facilitates workpiece positioning. This utility model includes a powder coating chamber, a first fixing plate fixed to the top of the inside of the powder coating chamber, and a first motor fixed to one side of the top of the first fixing plate. This utility model provides a steel pipe powder coating device that facilitates workpiece positioning. The rotating mechanism design allows for uniform powder coating of all parts of the steel pipe surface, reducing spraying time and labor. Simultaneously, the rotation helps eliminate blind spots and uneven coating during the spraying process. The clamping mechanism design adapts to various specifications of steel pipes, improving the equipment's versatility and applicability. This reduces the equipment's specialization and lowers investment costs, eliminating the need for dedicated clamping equipment for each pipe specification. This reduces the time and workload of changing clamps, improving production efficiency. However, in actual use, this equipment is not conducive to the rapid disassembly and installation of steel pipes, hindering the powder coating process. Furthermore, it is difficult to achieve uniform powder coating, potentially affecting the quality of the powder coating. Therefore, we introduce a new powder coating positioning device for coated steel pipes. Utility Model Content
[0004] The main purpose of this utility model is to provide a positioning device for processing plastic-coated steel pipes and spraying, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A positioning device for powder coating of plastic-coated steel pipes includes a support frame. High-pressure delivery pumps are fixedly connected to the lower left and lower right ends of the support frame. A connecting pipe is fixedly connected to the upper ends of the two high-pressure delivery pumps. A protective plate is inserted through the front of the upper end of the support frame. A support block is fixedly connected to the upper front end of the protective plate. A collection box and a support assembly are inserted through the lower front end of the support frame, with the support assembly located above the collection box. Delivery pipes are fixedly connected to the left and right inner walls of the support frame. The two delivery pipes are respectively fixedly connected to the two connecting pipes. Several nozzles are fixedly connected to the opposite ends of the two delivery pipes.
[0007] The support assembly includes a support plate, a connecting component fixedly connected to the middle of the rear upper part of the support plate, a motor inserted through the middle of the upper part of the support plate, a support plate fixedly connected to the output end of the motor, a first limiting component fixedly connected to the middle of the upper part of the support plate, a fixing ring fixedly connected to the upper outer surface of the motor, support plates fixedly connected to the lower left and lower right ends of the first limiting component, a top plate fixedly connected to the upper end of the connecting component, a sliding plate inserted through the front of the upper part of the top plate, a second limiting component movably connected to the lower end of the sliding plate via a connecting shaft, and the support plate inserted through the support frame.
[0008] Preferably, the support plate includes a plate body, a slot is provided in the middle of the upper end of the plate body, a baffle is fixedly connected to the front of the upper end of the plate body, a rod is fixedly connected to the left and right sides of the upper end of the baffle, a connecting block is fixedly connected to the left front end of the plate body, a pull ring is fixedly connected to the middle front end of the plate body, and the plate body is interlocked with the support frame.
[0009] Preferably, the second limiting component includes a support rod, with support rods inserted at both ends of the support rod. A limiting block is fixedly connected to one end of each of the two support rods facing away from each other. Limiting screws are inserted at the upper left and upper right sides of the outer surface of the support rod. The support rod is movably connected to the slide plate via a connecting shaft.
[0010] Preferably, both of the insert rods are inserted into the protective plate, and the slot is sleeved with the motor.
[0011] Preferably, the two limiting screws pass through the support rod and contact the two support rods respectively.
[0012] Preferably, the first limiting component and the two limiting blocks do not contact the two sets of longitudinal nozzles.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. By setting up a first limiting component and two support plates to support the steel pipe, the first and second limiting components together support the steel pipe in the powder coating process. By sliding the connection length between the two sets of two transverse support rods and the two support rods, and fixing them with two sets of two transverse limiting screws, the steel pipe to be coated can be quickly limited and fixed, which facilitates the subsequent powder coating process and improves flexibility.
[0015] 2. By setting up two delivery pipes, several nozzles are fixedly connected longitudinally at equal intervals at opposite ends of the two delivery pipes. The plastic coating material is delivered to the delivery pipes and nozzles by two high-pressure delivery pumps and two connecting pipes, and sprayed out through the two sets of longitudinal nozzles, making the powder coating process more uniform and improving stability. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of a powder coating positioning device for processing plastic-coated steel pipes according to the present invention;
[0017] Figure 2 This is a schematic diagram of the overall structure of the conveying pipe of the powder coating positioning device for processing plastic-coated steel pipes according to this utility model;
[0018] Figure 3 This is a schematic diagram of the overall structure of the support component of the powder coating positioning device for processing plastic-coated steel pipes according to this utility model;
[0019] Figure 4 This is a schematic diagram of the overall structure of the support plate of the powder coating positioning device for processing plastic-coated steel pipes according to the present invention;
[0020] Figure 5 This is a schematic diagram of the overall structure of the No. 2 limiting component of the powder coating positioning device for processing plastic-coated steel pipes according to this utility model.
[0021] In the diagram: 1. Support frame; 2. High-pressure delivery pump; 3. Connecting pipe; 4. Protective plate; 5. Support block; 6. Collection box; 7. Support assembly; 8. Delivery pipe; 9. Nozzle; 71. Support plate; 72. Connecting assembly; 73. Motor; 74. Fixing ring; 75. Support plate; 76. First limit assembly; 77. Support plate; 78. Slide plate; 79. Second limit assembly; 80. Top plate; 711. Plate body; 712. Slot; 713. Baffle; 714. Insert rod; 715. Connecting block; 716. Pull ring; 791. Support rod; 792. Support rod; 793. Limiting block; 794. Limiting screw. Detailed Implementation
[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.
[0025] Please see Figure 1-5 This utility model provides a technical solution:
[0026] A positioning device for powder coating of plastic-coated steel pipe includes a support frame 1. High-pressure delivery pumps 2 are fixedly connected to the lower left and lower right ends of the support frame 1. Connecting pipes 3 are fixedly connected to the upper ends of the two high-pressure delivery pumps 2. A protective plate 4 is inserted through the front of the upper end of the support frame 1. A support block 5 is fixedly connected to the upper front end of the protective plate 4. A collection box 6 and a support assembly 7 are inserted through the lower front end of the support frame 1, and the support assembly 7 is located above the collection box 6. Delivery pipes 8 are fixedly connected to the left and right inner walls of the support frame 1. The two delivery pipes 8 are respectively fixedly connected to the two connecting pipes 3. Several nozzles 9 are fixedly connected to the opposite ends of the two delivery pipes 8.
[0027] In this embodiment, the support component 7 includes a support plate 71. A connecting component 72 is fixedly connected to the middle of the rear upper part of the support plate 71. A motor 73 is inserted through the middle of the upper part of the support plate 71. A support plate 75 is fixedly connected to the output end of the motor 73. A first limiting component 76 is fixedly connected to the middle of the upper part of the support plate 75. A fixing ring 74 is fixedly connected to the upper part of the outer surface of the motor 73. Support plates 77 are fixedly connected to the lower left and lower right ends of the first limiting component 76. The support plate 71 is inserted through the support frame 1. The support plate 71 includes a plate body 711. A slot 712 is provided in the middle of the upper end. A baffle 713 is fixedly connected to the front of the upper end of the plate 711. Insert rods 714 are fixedly connected to the left and right sides of the upper end of the baffle 713. A connecting block 715 is fixedly connected to the left front end of the plate 711. A pull ring 716 is fixedly connected to the middle front end of the plate 711. The plate 711 is inserted and connected to the support frame 1. Both insert rods 714 are inserted and connected to the protective plate 4. The slot 712 is sleeved with the motor 73. The first limiting component 76 and the two limiting blocks 793 do not contact the two sets of longitudinal nozzles 9.
[0028] The above scheme involves: supporting the steel pipe to be powder coated using support component 7; supporting the steel pipe using first limiting component 76 and two support plates 77; first limiting component 76 and second limiting component 79 having the same structure and being symmetrically distributed; adjusting the height of sliding plate 78 on top plate 80 to position second limiting component 79 within the steel pipe, improving flexibility; rotating support plate 75 via motor 73 to adjust the position of the steel pipe placed on first limiting component 76, further improving flexibility; positioning motor 73 by connecting slot 712 to motor 73 and screws passing through fixing ring 74 and inserting into support plate 71; and several filter holes on the upper end of plate 711 to facilitate the collection of powder coating material through several plates 711 into collection box 6, improving flexibility.
[0029] In this embodiment, the second limiting component 79 includes a support rod 791, with support rods 792 inserted through both ends of the support rod 791. Limiting blocks 793 are fixedly connected to the opposite ends of the two support rods 792. Limiting screws 794 are inserted through the upper left and upper right sides of the outer surface of the support rod 791. The support rod 791 is movably connected to the slide plate 78 through a connecting shaft. The two limiting screws 794 pass through the support rod 791 and contact the two support rods 792 respectively.
[0030] The above solution involves adjusting the connection length between the two sets of transverse support rods 792 and the two sets of support rods 791, so that the two sets of transverse limiting blocks 793 come into contact with the inner wall of the steel pipe and are fixed by the two sets of transverse limiting screws 794. This allows for quick and easy positioning and fixing of the steel pipe to be coated, facilitating the subsequent powder coating process and improving flexibility.
[0031] It should be noted that this utility model is a positioning device for powder coating of plastic-coated steel pipes. During use, two high-pressure conveying pumps 2 are fixedly connected to an external plastic coating material conveying device. The high-pressure conveying pumps 2 serve as a power source, drawing and pressurizing the plastic coating material from the external device. The pressurized material is then evenly conveyed to the conveying pipe 8 through two connecting pipes 3, and subsequently distributed to several longitudinally arranged nozzles 9. The nozzles 9 spray the plastic coating material in a mist. The nozzles 9 are arranged in multiple longitudinal groups and operate continuously during the rotation of the steel pipe, ensuring that the plastic coating material evenly covers the surface of the steel pipe and guaranteeing uniformity in the powder coating process. To ensure stability and durability, the steel pipe to be powder-coated is placed on the first limiting component 76. The first limiting component 76 and two support plates 77 together provide support for the steel pipe. The shape and position of the first limiting component 76 are designed to fit the steel pipe, allowing for initial positioning of the pipe. The support plates 77 provide lateral support to prevent the steel pipe from rolling or tilting. By adjusting the height of the sliding plate 78 on the top plate 80, the second limiting component 79 can be positioned inside the steel pipe. This design allows for flexible adjustment of the height of the second limiting component 79 according to different pipe diameters, improving the versatility of the device. Simultaneously, the two sets of lateral support rods can be adjusted... The connection length between 792 and the two support rods 791 ensures that both sets of lateral limiting blocks 793 are in contact with the inner wall of the steel pipe. They are then fixed by two sets of lateral limiting screws 794, thus limiting the steel pipe from the inside and preventing displacement during powder coating. This facilitates precise subsequent powder coating and improves operational flexibility. The motor 73 acts as the power unit, driving the support plate 75 to rotate. Since the first limiting component 76 is placed on the support plate 75, and the steel pipe is placed on the first limiting component 76, the rotation of the motor 73 will cause the steel pipe to rotate synchronously. During operation, two sets of longitudinally spaced nozzles 9 continuously perform powder coating. The rotation of the steel pipe ensures that the coating material can evenly cover its entire circumference, further guaranteeing the uniformity of powder coating and improving the quality of powder coating. Several filter holes opened at the upper end of the plate 711 play a key role. During the powder coating process, the powder coating material that is not attached to the steel pipe will fall downwards. These filter holes allow the powder coating material to pass through and fall into the collection box 6 for collection. This not only avoids the waste of powder coating material and reduces production costs, but also keeps the working environment clean and improves the flexibility and environmental friendliness of the device.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A positioning device for processing plastic-coated steel pipes, comprising a support frame (1), characterized in that: High-pressure delivery pumps (2) are fixedly connected to the lower left and lower right ends of the support frame (1). A connecting pipe (3) is fixedly connected to the upper ends of the two high-pressure delivery pumps (2). A protective plate (4) is inserted through the front of the upper end of the support frame (1). A support block (5) is fixedly connected to the upper front end of the protective plate (4). A collection box (6) and a support assembly (7) are inserted through the lower front end of the support frame (1), and the support assembly (7) is located above the collection box (6). Delivery pipes (8) are fixedly connected to the left and right inner walls of the support frame (1). The two delivery pipes (8) are fixedly connected to the two connecting pipes (3) respectively. Several nozzles (9) are fixedly connected to the opposite ends of the two delivery pipes (8). The support assembly (7) includes a support plate (71), a connecting assembly (72) is fixedly connected to the middle of the rear part of the upper end of the support plate (71), a motor (73) is inserted through the middle of the upper end of the support plate (71), a support plate (75) is fixedly connected to the output end of the motor (73), a first limiting assembly (76) is fixedly connected to the middle of the upper end of the support plate (75), a fixing ring (74) is fixedly connected to the upper part of the outer surface of the motor (73), a support plate (77) is fixedly connected to the lower left and lower right ends of the first limiting assembly (76), a top plate (80) is fixedly connected to the upper end of the connecting assembly (72), a sliding plate (78) is inserted through the front of the upper end of the top plate (80), a second limiting assembly (79) is movably connected to the lower end of the sliding plate (78) through a connecting shaft, and the support plate (71) is inserted through the support frame (1).
2. The powder coating positioning device for processing plastic-coated steel pipes according to claim 1, characterized in that: The support plate (71) includes a plate body (711), a slot (712) is provided in the middle of the upper end of the plate body (711), a baffle (713) is fixedly connected to the front of the upper end of the plate body (711), a plug rod (714) is fixedly connected to the left and right of the upper end of the baffle (713), a connecting block (715) is fixedly connected to the left of the front end of the plate body (711), a pull ring (716) is fixedly connected to the middle of the front end of the plate body (711), and the plate body (711) is interlocked with the support frame (1).
3. The positioning device for processing and spraying plastic-coated steel pipes according to claim 1, characterized in that: The second limiting component (79) includes a support rod (791), with support rods (792) inserted at both ends of the support rod (791). Limiting blocks (793) are fixedly connected to the opposite ends of the two support rods (792). Limiting screws (794) are inserted at the upper left and upper right sides of the outer surface of the support rod (791). The support rod (791) is movably connected to the slide plate (78) through a connecting shaft.
4. The powder coating positioning device for processing plastic-coated steel pipes according to claim 2, characterized in that: Both of the insert rods (714) are inserted into the protective plate (4), and the slot (712) is sleeved with the motor (73).
5. The powder coating positioning device for processing plastic-coated steel pipes according to claim 3, characterized in that: The two limiting screws (794) pass through the support rod (791) and contact the two support rods (792).
6. The powder coating positioning device for processing plastic-coated steel pipes according to claim 1, characterized in that: The first limiting component (76) and the two limiting blocks (793) do not contact each other with the two sets of longitudinal nozzles (9).