Electrostatic spraying machine for outer wall of steel pipe
By designing a sliding block support device guided by a rotating block and a guide rod, the problem of uneven electrostatic spraying of short steel pipes was solved, achieving uniform spraying of the outer wall of the steel pipe and improving its anti-corrosion performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIFANG HONGJIA YAXIANG DECORATION ENGINEERING CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-07-10
AI Technical Summary
In existing technologies, uneven spraying of short steel pipes during electrostatic spraying is caused by the clamping device, which affects the anti-corrosion performance and reduces product quality.
An electrostatic spraying machine for the outer wall of steel pipe was designed. A rotating block drives a sliding block to slide in a sliding groove. A fixed support block extends to the inner wall of the steel pipe under the guidance of a guide rod. The elastic damper and guide block of the positioning device are used to ensure the stability and uniformity of the fixed support block.
This method achieves uniform coating on the outer wall of steel pipes, improves corrosion resistance, avoids uneven coating caused by obstruction at the clamping points, and enhances product quality.
Smart Images
Figure CN224475151U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel pipe spraying technology, specifically to an electrostatic spraying machine for the outer wall of steel pipes. Background Technology
[0002] Steel pipes are essential components for transporting fluids, powdery solids, and exchanging heat energy, playing a vital role in water conservancy projects and the transportation of oil and natural gas. During storage, steel pipes are prone to rust formation on their surfaces, necessitating the application of a protective coating. This process utilizes high-voltage electrostatics to charge paint particles, causing them to adhere to the pipe surface. This method achieves a paint utilization rate of over 95%, reducing waste and environmental pollution. Currently, when electrostatically spraying shorter steel pipes, clamping devices are typically used to fix the pipe's position, allowing operators to focus on parameters and freeing up manpower. However, when spraying the outside of the pipe, the clamped areas are difficult to coat evenly, compromising corrosion resistance and leading to decreased product quality. Therefore, we propose an electrostatic spraying machine for the outer wall of steel pipes. Utility Model Content
[0003] The purpose of this utility model is to provide an electrostatic spraying machine for the outer wall of steel pipes to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides an electrostatic spraying machine for the outer wall of steel pipes, including a mounting base. A fixing sleeve is fixedly mounted on the mounting base. A rotating block is rotatably arranged inside the fixing sleeve. A fixing device is provided on one side of the rotating block. A positioning device is provided on one side of the fixing device. The fixing device includes a plurality of fixed support blocks arranged in an array. The fixed support blocks penetrate the surface of the fixing sleeve and extend outward. A sliding block is fixedly connected to the plurality of fixed support blocks at close proximity to the rotating block. A sliding groove is opened on one side of the rotating block. The sliding block is slidably disposed inside the sliding groove. A rubber pad is fixedly connected to the end of the fixed support block.
[0005] By adopting the above scheme, when the rotating block is rotated, the sliding block changes the position of the end of the fixed support block and the center point of the side of the rotating block by sliding inside the sliding groove, and the fixed support block slides out to support the inner wall of the steel pipe, thereby fixing the steel pipe.
[0006] As a further improvement to this technical solution, a first guide groove is provided inside the fixed sleeve on one side of the rotating block, and a first guide rod is slidably arranged inside the first guide groove. The first guide rod is fixedly installed on the fixed support block.
[0007] By adopting the above scheme, when the fixed support block slides, the first guide rod slides inside the first guide groove to guide the fixed support block, thereby preventing the fixed support block from sliding sideways during the sliding process.
[0008] As a further improvement to this technical solution, the positioning device includes a trapezoidal slider. An inner groove is provided on one side of the sliding groove, and the trapezoidal slider is slidably disposed inside the inner groove. A plurality of elastic dampers located inside the inner groove are fixedly connected to the side of the trapezoidal slider near the fixed support block. The elastic dampers are used to apply an elastic thrust to the trapezoidal slider to slide away from the fixed support block. Through grooves are provided on both the upper and lower sides of the inner groove. A sliding rod is slidably disposed inside the through groove. The contact surface between the sliding rod and the trapezoidal slider is inclined. A sliding groove is fixedly connected to the side of the sliding rod away from the trapezoidal slider. The sliding groove passes through the rotating block and extends outward. A slot is provided on the inner wall surface of the fixed sleeve, and the sliding groove is movably engaged inside the slot.
[0009] By adopting the above scheme, when the fixed support block supports and fixes the steel pipe, the elastic thrust applied to the trapezoidal slider by the elastic damper causes the trapezoidal slider to slide away from the fixed support block. By setting the inclined surface of the trapezoidal slider and the slide rod, the sliding slider pushes the slide rod to slide when it slides, and the slide groove is locked in the corresponding slot, thereby fixing the rotating block.
[0010] As a further improvement to this technical solution, a limiting groove is provided on the inclined surface of the trapezoidal slider, and a limiting block is slidably arranged inside the limiting groove, with the limiting block fixedly installed on the slide rod.
[0011] By adopting the above scheme, when the slide bar slides, the sliding block inside the limiting groove guides the slide bar, so that the slide bar and the trapezoidal slider are always in contact, making the device more stable.
[0012] As a further improvement to this technical solution, a second guide groove is provided on both sides of the inner groove, and a second guide block is slidably arranged inside the second guide groove. The second guide block is fixedly installed on the trapezoidal slider.
[0013] By adopting the above scheme, when the trapezoidal slider slides inside the inner groove, the trapezoidal slider is guided by the setting of the second guide block to avoid the trapezoidal slider getting stuck due to uneven force.
[0014] As a further improvement to this technical solution, a rotating block is provided on one side of the rotating block, and a connecting block is fixedly connected to the middle of the side of the rotating block near the rotating block. The connecting block extends into the rotating block and is fixedly connected to the trapezoidal slider. Multiple slots are provided on the surface of the rotating block near the rotating block, and a plug rod is movably inserted into the slot. The plug rod is fixedly installed on the rotating block.
[0015] By adopting the above scheme, the rotating block can be easily rotated by rotating the rotating block. At the same time, the rotating block is fixed relative to the rotating block by setting multiple plugs, so as to avoid deformation and breakage of the connecting block due to excessive local force when rotating the rotating block.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] In this electrostatic spraying machine for the outer wall of steel pipe, the rotation of the rotating block causes the sliding block to slide inside the sliding groove, thereby pushing the fixed support block to slide. The sliding of the first guide rod inside the first guide groove guides the fixed support block, causing the end of the fixed support block to extend to the outside of the fixed sleeve. This allows the fixed support block to support the inner wall of the steel pipe and fix the steel pipe, preventing the outer wall of the steel pipe from being blocked during spraying, which would prevent the steel pipe from being sprayed evenly, thus affecting the anti-corrosion performance of the steel pipe and causing a decline in product quality. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a cross-sectional structural schematic diagram of the utility model;
[0020] Figure 3 This is a cross-sectional structural diagram of the utility model fixing sleeve;
[0021] Figure 4 This is a cross-sectional structural schematic diagram of the rotating block of the utility model;
[0022] Figure 5 This is a cross-sectional structural schematic diagram of the fixing device of the utility model;
[0023] Figure 6 This is a schematic diagram of the positioning device of the utility model.
[0024] The meanings of the labels in the diagram are as follows:
[0025] 1. Mounting base; 2. Fixing sleeve; 3. Fixing device; 31. Fixing support block; 32. Sliding block; 33. Rubber pad; 34. First guide rod; 4. Positioning device; 41. Trapezoidal slider; 42. Elastic damper; 43. Sliding rod; 44. Sliding groove; 46. Connecting block; 47. Insert rod; 48. Limiting groove; 49. Limiting block; 411. Second guide block; 5. Rotating block; 8. Sliding groove; 9. First guide groove; 10. Inner groove; 11. Through groove; 12. Slot; 13. Slot; 14. Second guide groove; 15. Rotating block. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.
[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 are not intended to indicate or imply that the device or component 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.
[0028] Example 1
[0029] Please see Figures 1-5 As shown, this embodiment provides a steel pipe outer wall electrostatic spraying machine, including a mounting base 1, a fixing sleeve 2 fixedly mounted on the mounting base 1, a rotating block 5 rotatably disposed inside the fixing sleeve 2, a fixing device 3 disposed on one side of the rotating block 5, and a positioning device 4 disposed on one side of the fixing device 3. The fixing device 3 includes a plurality of fixed support blocks 31 arranged in an array, the fixed support blocks 31 penetrating the surface of the fixing sleeve 2 and extending outward, and sliding blocks 32 fixedly connected to the plurality of fixed support blocks 31 at close proximity to the rotating block 5. A sliding groove 8 is opened on one side of the rotating block 5, and the sliding block 32 is slidably disposed inside the sliding groove 8. A rubber pad 33 is fixedly connected to the end of the fixed support block 31. When the rotating block 5 rotates, the sliding of the sliding block 32 inside the sliding groove 8 pushes the fixed support block 31 to slide, so as to achieve the desired effect. This causes multiple fixed support blocks 31 to extend outside the fixed sleeve 2, and the fixed support blocks 31 support and fix the inner wall of the steel pipe. At the same time, the rubber pads 33 increase the friction between the fixed support blocks 31 and the steel pipe, and prevent the fixed support blocks 31 from excessively squeezing the steel pipe and causing deformation. The fixed sleeve 2 has a first guide groove 9 on one side of the rotating block 5. A first guide rod 34 is slidably arranged in the first guide groove 9. The first guide rod 34 is fixedly installed on the fixed support block 31. When the fixed support block 31 slides, the first guide rod 34 guides the fixed support block 31 by sliding in the first guide groove 9, preventing the fixed support block 31 from sliding sideways during the sliding process, which would prevent the steel pipe from being effectively fixed.
[0030] Please see Figures 1-6 As shown, the positioning device 4 includes a trapezoidal slider 41. An inner groove 10 is formed on one side of the sliding groove 8. The trapezoidal slider 41 is slidably disposed inside the inner groove 10. Multiple elastic dampers 42 located inside the inner groove 10 are fixedly connected to the side of the trapezoidal slider 41 near the fixed support block 31. The elastic dampers 42 apply an elastic thrust to the trapezoidal slider 41 to slide away from the fixed support block 31. Through grooves 11 are formed on both the upper and lower sides of the inner groove 10. A sliding rod 43 is slidably disposed inside the through groove 11. The contact surface between the sliding rod 43 and the trapezoidal slider 41 is inclined. A sliding groove 44 is fixedly connected to the side of the sliding rod 43 away from the trapezoidal slider 41. The sliding groove 44 passes through the rotating block 5 and extends... The inner wall surface of the fixed sleeve 2 is provided with a slot 12, and the sliding groove 44 is movably engaged in the slot 12. After the fixed support block 31 supports and fixes the steel pipe, the elastic thrust applied to the trapezoidal slider 41 by the elastic damper 42 pushes the trapezoidal slider 41 to slide inside the inner groove 10. The sliding rod 43 slides inside the through groove 11 through the abutment between the sliding rod 43 and the trapezoidal slider 41. In this way, the sliding groove 44 fixed on the sliding rod 43 is engaged in the slot 12, and the rotating block 5 is fixed on the fixed sleeve 2. This prevents the rotating block 5 from rotating due to the elastic thrust applied by the steel pipe to the fixed support block 31 after the steel pipe is supported and fixed, thus preventing the steel pipe from being effectively fixed.
[0031] Please see Figure 4 and Figure 6 As shown, a limiting groove 48 is provided on the inclined surface of the trapezoidal slider 41. A limiting block 49 is slidably arranged inside the limiting groove 48. The limiting block 49 is fixedly installed on the slider 43. During the sliding process of the slider 43, the limiting block 49 limits and guides the slider 43 by sliding inside the limiting groove 48, so that the trapezoidal slider 41 and the slider 43 are always in contact, preventing the slider 43 from slipping off due to external force during the sliding process, which would affect the normal use of the device. At the same time, a second guide groove 14 is provided on both sides of the inner groove 10. A second guide block 411 is slidably arranged inside the second guide groove 14. The second guide block 411 is fixedly installed on the trapezoidal slider 41. When the trapezoidal slider 41 slides inside the inner groove 10, the second guide block 411 guides the trapezoidal slider 41 by sliding inside the second guide groove 14, increasing the uniformity of the force on the trapezoidal slider 41, and preventing the trapezoidal slider 41 from getting stuck due to uneven force during the sliding process, which would affect the normal use of the device.
[0032] Please see Figure 4 and Figure 6As shown, a rotating block 15 is provided on one side of the rotating block 5. A connecting block 46 is fixedly connected to the middle of the side of the rotating block 15 near the rotating block 5. The connecting block 46 extends into the rotating block 5 and is fixedly connected to the trapezoidal slider 41. When the steel pipe is fixed, the trapezoidal slider 41 is slid towards the side near the fixed support block 31 by pressing the rotating block 15, thereby disengaging the slide groove 44 from the slot 12. Rotating the rotating block 15 will make the rotating block 5 rotate. At the same time, multiple slots 13 are provided on the surface of the rotating block 5 near the rotating block 15. Insert rods 47 are movably inserted into the slots 13. The insert rods 47 are fixedly installed on the rotating block 15. The arrangement of multiple insert rods 47 avoids the deformation and damage of the connecting block 46 due to excessive local force when rotating the rotating block 15, thus protecting the device and extending its service life.
[0033] In this embodiment of the electrostatic spraying machine for the outer wall of a steel pipe, the user first abuts the end of the steel pipe against the mounting base 1, then presses the rotating block 15, causing the trapezoidal slider 41 to slide towards the fixed support block 31, and causing the slide groove 44 to disengage from the slot 12. Then, the rotating block 15 is rotated, causing the rotating block 5 to rotate. The sliding block 32, sliding inside the slide groove 8, pushes the fixed support block 31 to slide, causing the end of the fixed support block 31 to extend outside the rotating block 5 and support the inner wall of the steel pipe, thereby fixing the steel pipe. During the sliding of the fixed support block 31, the first guide rod 34 slides inside the first guide groove 9 to guide the fixed support block 31, preventing the fixed support block 31 from sliding out of the rotating block 5. During the sliding process, side slippage occurs, affecting the device's ability to fix the steel pipe. After fixing the steel pipe, the rotating block 15 is released, and the elastic damper 42 applies an elastic thrust to the trapezoidal slider 41, pushing the trapezoidal slider 41 to slide inside the inner groove 10. This causes the trapezoidal slider 41 to push the sliding rod 43 to slide inside the through groove 11, so that the sliding groove 44 is locked inside the slot 12, thereby fixing the rotating block 5. This prevents the fixed support block 31 from being affected by the weight of the steel pipe, which could cause the rotating block 5 to rotate and affect the device's ability to fix the steel pipe. The sliding of the limiting block 49 inside the limiting groove 48 guides the sliding rod 43, ensuring that the trapezoidal slider 41 and the sliding rod 43 are always in contact, making the device more stable.
[0034] 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 preferred examples and are not intended to limit the 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A steel pipe external wall electrostatic spraying machine, comprising a mounting base (1), wherein a fixing sleeve (2) is fixedly mounted on the mounting base (1), characterized in that: The fixed sleeve (2) is rotatably provided with a rotating block (5). A fixing device (3) is provided on one side of the rotating block (5). A positioning device (4) is provided on one side of the fixing device (3). The fixing device (3) includes a plurality of fixed support blocks (31) arranged in an array. The fixed support blocks (31) penetrate the surface of the fixed sleeve (2) and extend outward. A sliding block (32) is fixedly connected to the plurality of fixed support blocks (31) at a close position on the side near the rotating block (5). A sliding groove (8) is opened on one side of the rotating block (5). The sliding block (32) is slidably disposed in the sliding groove (8). A rubber pad (33) is fixedly connected to the end of the fixed support block (31).
2. The electrostatic spraying machine for the outer wall of steel pipes according to claim 1, characterized in that: The fixed sleeve (2) has a first guide groove (9) on one side of the rotating block (5) inside. A first guide rod (34) is slidably arranged inside the first guide groove (9). The first guide rod (34) is fixedly installed on the fixed support block (31).
3. The electrostatic spraying machine for the outer wall of steel pipes according to claim 1, characterized in that: The positioning device (4) includes a trapezoidal slider (41). An inner groove (10) is provided on one side of the sliding groove (8). The trapezoidal slider (41) is slidably disposed inside the inner groove (10). Multiple elastic dampers (42) located inside the inner groove (10) are fixedly connected to the side of the trapezoidal slider (41) closest to the fixed support block (31). The elastic dampers (42) are used to apply an elastic thrust to the trapezoidal slider (41) to slide away from the fixed support block (31). The inner groove ( 10) A through groove (11) is provided on both the upper and lower sides. A slide rod (43) is slidably arranged inside the through groove (11). The contact surface between the slide rod (43) and the trapezoidal slider (41) is inclined. A slide groove (44) is fixedly connected to the side of the slide rod (43) away from the trapezoidal slider (41). The slide groove (44) passes through the rotating block (5) and extends outward. A slot (12) is provided on the inner wall surface of the fixed sleeve (2). The slide groove (44) is movably engaged in the slot (12).
4. The electrostatic spraying machine for the outer wall of steel pipes according to claim 3, characterized in that: A limiting groove (48) is provided on the inclined surface of the trapezoidal slider (41), and a limiting block (49) is slidably arranged inside the limiting groove (48). The limiting block (49) is fixedly installed on the slide rod (43).
5. The electrostatic spraying machine for the outer wall of steel pipes according to claim 3, characterized in that: The inner groove (10) has a second guide groove (14) on both sides. A second guide block (411) is slidably arranged inside the second guide groove (14). The second guide block (411) is fixedly installed on the trapezoidal slider (41).
6. The electrostatic spraying machine for the outer wall of steel pipes according to claim 3, characterized in that: A rotating block (15) is provided on one side of the rotating block (5). A connecting block (46) is fixedly connected to the middle of the side of the rotating block (15) near the rotating block (5). The connecting block (46) extends into the rotating block (5) and is fixedly connected to the trapezoidal slider (41). A plurality of slots (13) are provided on the surface of the rotating block (5) near the rotating block (15). A plug rod (47) is movably inserted into the slot (13). The plug rod (47) is fixedly installed on the rotating block (15).