Spraying device for inner wall and outer wall of plastic-coated steel pipe

Abstract

The utility model discloses a spraying device for inner and outer walls of a plastic-coated steel pipe, and particularly relates to the field of steel pipe machining. The spraying device for the inner wall and the outer wall of the plastic-coated steel pipe comprises a spraying workbench, a two-way linear driving unit is arranged on the spraying workbench, a pair of spraying transverse adjusting structures is arranged on the two-way linear driving unit, and spraying distance adjusting structures are arranged on the spraying transverse adjusting structures. A pair of spraying pipes used for being correspondingly arranged on the inner wall and the outer wall of the plastic-coated steel pipe are arranged on the spraying distance adjusting structure, a bracket is fixedly connected to the spraying workbench, a pair of pipe carrier rollers used for supporting the plastic-coated steel pipe are rotationally connected to the bracket, and limiting rollers used for limiting rolling of the plastic-coated steel pipe are arranged above the pipe carrier rollers. And rotary transmission assemblies are arranged on the bidirectional linear driving unit and the pair of brackets. The technical problems that the spraying path is long and the spraying of the inner wall and the outer wall is not synchronous during the spraying operation of the plastic-coated steel pipe at present are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe processing, and more specifically to a device for spraying inner and outer walls of a plastic-coated steel pipe. Background Art

[0002] Plastic-coated steel pipe is also called steel-plastic composite pipe. It takes steel pipe as the base and needs to weld a plastic anti-corrosion layer on the inner surface of the steel pipe through spraying, rolling, dipping and suction process or weld plastic anti-corrosion layer on the inner and outer surfaces. It has good corrosion resistance and is mainly used for drainage, exhaust, oil or warm water. Plastic-coated steel pipe spraying device is needed in the process of spraying paint on the inner and outer walls of plastic-coated steel pipe.

[0003] Patent No. CN220514528U discloses a device for spraying inner and outer walls of plastic-coated steel pipes, including a base, a first mounting groove is provided at the top right end of the base, and a first adjusting component is provided inside the first mounting groove. The advantages of this utility model are as follows: by providing a second adjusting component and a clamping edge structure, the device can be adjusted according to the length of the plastic-coated steel pipe body, and the two ends of the plastic-coated steel pipe body are clamped and fixed by the clamping edge structure. After being fixed, the nozzle is driven through the connecting hole by the first adjusting component, so that the nozzle on the nozzle performs a spraying operation on the plastic-coated steel pipe body. During the spraying operation, the second connecting plate is driven to rotate by a driving motor, so that the plastic-coated steel pipe body can be evenly sprayed. The inner wall of the plastic-coated steel pipe body can be sprayed by the first adjusting component. The inner and outer walls of the plastic-coated steel pipe body can be evenly sprayed by the above structure, and the contact area between the device and the plastic-coated steel pipe body is small, and the spraying effect is good.

[0004] In the above patent, the inventor believes that when the patent is in use, the spraying structure moves from one end to the other end of the plastic-coated steel pipe when spraying the inner and outer walls of the plastic-coated steel pipe. During this process, the moving path of the spraying structure prolongs the spraying time. In addition, the spraying of the inner and outer walls of the sprayed steel pipe is not synchronized, which reduces the efficiency of the spraying operation. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a device for spraying inner and outer walls of plastic-coated steel pipes. The technical problem to be solved by the utility model is: when spraying plastic-coated steel pipes, there are technical problems such as long spraying path and asynchronous spraying of inner and outer walls.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for spraying inner and outer walls of plastic-coated steel pipes, comprising a spraying workbench, a bidirectional linear drive unit is arranged on the spraying workbench, a pair of spraying lateral adjustment structures are arranged on the bidirectional linear drive unit, and a spraying spacing adjustment structure is arranged on the spraying lateral adjustment structure, a pair of spraying pipes corresponding to the inner and outer walls of the plastic-coated steel pipe are arranged on the spraying spacing adjustment structure, a bracket is fixedly connected to the spraying workbench, a pair of pipe rollers for supporting the plastic-coated steel pipe are rotatably connected to the bracket, a limiting roller for rolling limiting the plastic-coated steel pipe is arranged above the pipe roller, and a rotating transmission component is arranged on the bidirectional linear drive unit and the pair of brackets.

[0007] In a preferred embodiment, the bidirectional linear drive unit includes a pair of bearing seats fixedly connected to the upper surface of the spray workbench, a bidirectional screw rod rotatably connected to the pair of bearing seats, a rotating device fixedly connected to one of the bearing seats, a light rod fixedly connected to each bearing seat, and a pair of movable seats connected to the bidirectional screw rod 1 through a threaded transmission. The output end of the rotating device is fixedly connected to one end of the bidirectional screw rod 1, and the movable seat arranged on the bidirectional screw rod 1 is slidably connected to the light rod.

[0008] In a preferred embodiment, a pair of fixing plates are fixedly connected to the spraying workbench, and one end of the polished rod facing away from the bearing seat is fixedly connected to the fixing plates.

[0009] In a preferred embodiment, the spraying lateral adjustment structure includes a guide slide fixedly connected to the movable seat, a slide seat slidably connected to the guide slide, and a fastener threadedly penetrating the slide seat and abutting against the guide slide.

[0010] In a preferred embodiment, the spray spacing adjustment structure includes a support plate fixedly connected to the slide seat, a bidirectional screw rod rotatably connected to the inner side of the support plate, and a pair of stands threadedly connected to the bidirectional screw rod, and the stands are slidably connected to the inner side of the support plate.

[0011] In a preferred embodiment, the spray pipe is fixedly passed through the stand, one end of the spray pipe is fixedly connected to a spray joint, the outer surface of the other end of the spray pipe is fixedly connected to a spray head, and the corresponding spray heads on two adjacent spray pipes are arranged opposite to each other.

[0012] In a preferred embodiment, the rotary transmission assembly includes a gear 1 fixedly connected to the empty thread surface of the bidirectional screw 1 and a pair of gears 2 meshingly connected to the gear 1, and the gear 2 is fixedly connected to one end of the pipe roller.

[0013] In a preferred embodiment, the support is fixedly connected to a bracket, the bracket is fixedly connected to a telescopic device, the outer side of the limiting roller is rotatably connected to a roller seat, and the output end of the telescopic device is fixedly connected to the roller seat of the limiting roller.

[0014] Technical effects and advantages of the utility model:

[0015] The utility model discloses a device for spraying inner and outer walls of plastic-coated steel pipes, which provides linear motion for two pairs of spray pipes that move closer to or away from each other through a bidirectional linear drive unit, and at the same time, the bidirectional linear drive unit provides rotational power for the pipe roller through a rotating transmission component, so that the plastic-coated steel pipe on the support seat can realize the rotation for spraying, and the movement path of the spray pipe can be shortened while ensuring the effective spraying of the inner and outer walls of the plastic-coated steel pipe, and the effect of synchronous spraying of the inner and outer walls of the plastic-coated steel pipe can be achieved, thereby improving the spraying efficiency of the plastic-coated steel pipe.

[0016] The utility model discloses a device for spraying inner and outer walls of a plastic-coated steel pipe. By setting a spraying lateral adjustment structure and a spraying spacing adjustment structure, the spraying lateral adjustment structure can be used to adjust the lateral position of a pair of spraying pipes corresponding to the inner and outer walls of the plastic-coated steel pipe, and the spraying spacing adjustment structure can be used to adjust the spacing of a pair of spraying pipes, so that the spraying pipes can be adjusted on the spraying path, thereby adapting to the spraying requirements of the size of the plastic-coated steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the connection structure of the spraying workbench and the bidirectional screw rod of the utility model.

[0020] Figure 3 It is a schematic diagram of the connection structure of the guide slide plate, the stand and the spray pipe of the utility model.

[0021] Figure 4 The utility model is a schematic diagram of the connection structure of the support, the pipe roller and the gear one.

[0022] The accompanying drawings are marked as follows: 1. Spraying workbench; 2. Bearing seat; 21. Bidirectional screw rod 1; 22. Rotating device; 23. Light rod; 24. Moving seat; 3. Guide slide plate; 31. Sliding seat; 32. Fastener; 4. Support plate; 41. Bidirectional screw rod 2; 42. Stand; 5. Spraying pipe; 6. Support seat; 7. Pipe support roller; 8. Limiting roller; 9. Gear 1; 91. Gear 2; 10. Fixed plate; 11. Spray head; 12. Spraying joint; 13. Bracket; 14. Telescopic device. DETAILED DESCRIPTION

[0023] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Combined with reference Figure 1-Figure 4 The utility model provides a device for spraying inner and outer walls of a plastic-coated steel pipe, including a spraying workbench 1, a bidirectional linear drive unit is arranged on the spraying workbench 1, a pair of spraying lateral adjustment structures are arranged on the bidirectional linear drive unit, and a spraying spacing adjustment structure is arranged on the spraying lateral adjustment structure, and a pair of spraying tubes 5 for corresponding to the inner and outer walls of the plastic-coated steel pipe are arranged on the spraying spacing adjustment structure. By arranging the spraying tubes 5 in pairs at the left and right ends above the spraying workbench 1, when the spraying tubes 5 move relatively close to the plastic-coated steel pipe, the moving path of the spraying tubes 5 can be effectively shortened, and the spraying cycle can be shortened. A bracket 6 is fixedly connected to the spraying workbench 1, and a pair of pipe rollers 7 for supporting the plastic-coated steel pipe are rotatably connected to the bracket 6. A limiting roller 8 for rolling limiting the plastic-coated steel pipe is arranged above the pipe roller 7. The cooperation of the pipe roller 7 and the limiting roller 8 can make the plastic-coated steel pipe rotatably positioned on the bracket 6, and a rotating transmission component is arranged on the bidirectional linear drive unit and the pair of brackets 6.

[0025] The bidirectional linear drive unit includes a pair of bearing seats 2 fixedly connected to the upper surface of the spraying workbench 1, a bidirectional screw rod 21 rotatably connected to the pair of bearing seats 2, a rotating device 22 fixedly connected to one of the bearing seats 2, a light rod 23 fixedly connected to each bearing seat 2 and a pair of moving seats 24 connected to the bidirectional screw rod 21 by threaded transmission. The output end of the rotating device 22 is fixedly connected to one end of the bidirectional screw rod 21, and the moving seat 24 arranged on the bidirectional screw rod 21 is slidably connected to the light rod 23. The rotating device 22 adopts a rotating motor.

[0026] Specifically, the rotating device 22 drives the bidirectional screw rod 21 to rotate, and the light rod 23 provides a sliding guide for the moving seat 24. The bidirectional screw rod 21 can drive a pair of moving seats 24 to move closer to or away from each other. Then, the spray tubes 5 arranged on the left and right ends above the spraying workbench 1 can move relatively close to the plastic-coated steel pipe for spraying. This can effectively shorten the moving path of the spray tubes 5 and shorten the spraying cycle.

[0027] A pair of fixed plates 10 are fixedly connected to the spraying workbench 1, and one end of the polished rod 23 facing away from the bearing seat 2 is fixedly connected to the fixed plate 10. The fixed plate 10 is used to support the polished rod 23, and the fixed plate 10 can also be used for the rotation support of the bidirectional screw rod 21.

[0028] The spraying lateral adjustment structure includes a guide slide 3 fixedly connected to the moving seat 24, a slide seat 31 slidably connected to the guide slide 3, and a fastener 33 threadedly penetrating the slide seat 31 and abutting against the guide slide 3. The fastener 33 can be a bolt.

[0029] Specifically, by sliding the slide 31 on the guide slide 3 and locking the slide 31 with the fastener 33, the lateral position adjustability of the spray tube 5 on the spray spacing adjustment structure can be provided, which makes it easy to adjust the spray tube 5 to correspond to the position of the plastic-coated steel pipe.

[0030] The spray spacing adjustment structure includes a support plate 4 fixedly connected to the slide seat 31, a bidirectional screw rod 41 rotatably connected to the inner side of the support plate 4, and a pair of stands 42 threadedly connected to the bidirectional screw rod 41. The stands 42 are slidably connected to the inner side of the support plate 4. In the present application, a rotating part is provided at one end of the bidirectional screw rod 41, and a slider is provided at the bottom of the stands 42, which can be slidably set on the support plate 4.

[0031] Specifically, by rotating the bidirectional screw rod 41, the seat 42 is slidably set on the support plate 4, so that a pair of seats 42 can make a linear motion towards or away from each other, so that a pair of spray tubes 5 set on a pair of seats 42 can adjust the spacing to adapt to the wall thickness of the plastic-coated steel pipe for corresponding spraying.

[0032] The spray pipe 5 is fixedly passed through the stand 42, and one end of the spray pipe 5 is fixedly connected to a spray joint 12, which can be used to externally connect a pumping device that pumps the spray material. The outer surface of the other end of the spray pipe 5 is fixedly connected to a nozzle 11, and the nozzles 11 correspondingly arranged on the two adjacent spray pipes 5 are relatively arranged. The nozzles 11 can be used to spray paint for the plastic-coated steel pipe. The nozzles 11 correspondingly arranged on the two adjacent spray pipes 5 are relatively arranged, so that the inner and outer walls of the plastic-coated steel pipe can be sprayed synchronously.

[0033] The rotary transmission assembly includes a gear 9 fixedly connected to the empty thread surface of a bidirectional screw rod 21 and a pair of gears 91 meshingly connected to the gear 9, and the gear 91 is fixedly connected to one end of the pipe roller 7.

[0034] Specifically, when the bidirectional screw 21 rotates, it can drive the gear 9 to rotate, and the gear 9 can synchronously engage with a pair of gears 2 91 to rotate. In this way, the rotation of a pair of pipe rollers 7 can drive the plastic-coated steel pipe to rotate for spraying, so that the linearly moving nozzle 11 can spray the paint to cover the inner and outer walls of the plastic-coated steel pipe.

[0035] A bracket 13 is fixedly connected to the support 6, and a telescopic device 14 is fixedly connected to the bracket 13. The outer side of the limiting roller 8 is rotatably connected to a roller seat, and the output end of the telescopic device 14 is fixedly connected to the roller seat of the limiting roller 8. The telescopic device 14 can adopt a telescopic motor, and the telescopic device 14 drives the limiting roller 8 to roll and fit on the top of the coated steel pipe. In this way, when the pipe supporting roller 7 drives the plastic-coated steel pipe to rotate for spraying, the problem of deviation of the plastic-coated steel pipe can be prevented.

Claims

1. A device for spraying inner and outer walls of a plastic-coated steel pipe, comprising a spraying workbench (1), characterized in that: The spraying workbench (1) is provided with a bidirectional linear drive unit, the bidirectional linear drive unit is provided with a pair of spraying lateral adjustment structures, and the spraying lateral adjustment structure is provided with a spraying spacing adjustment structure, the spraying spacing adjustment structure is provided with a pair of spraying tubes (5) corresponding to the inner and outer walls of the plastic-coated steel pipe, the spraying workbench (1) is fixedly connected with a support seat (6), the support seat (6) is rotatably connected with a pair of tube rollers (7) for supporting the plastic-coated steel pipe, and a limiting roller (8) for rolling limiting the plastic-coated steel pipe is provided above the tube roller (7), and a rotating transmission component is provided on the bidirectional linear drive unit and the pair of support seats (6).

2. A plastic-coated steel pipe inner and outer wall spraying device according to claim 1, characterized in that: The bidirectional linear drive unit comprises a pair of bearing seats (2) fixedly connected to the upper surface of the spraying workbench (1), a bidirectional screw rod (21) rotatably connected to the pair of bearing seats (2), a rotating device (22) fixedly connected to one of the bearing seats (2), a light rod (23) fixedly connected to each bearing seat (2), and a pair of movable seats (24) threadedly connected to the bidirectional screw rod (21), wherein the output end of the rotating device (22) is fixedly connected to one end of the bidirectional screw rod (21), and the movable seat (24) arranged on the bidirectional screw rod (21) is slidably connected to the light rod (23).

3. A plastic-coated steel pipe inner and outer wall spraying device according to claim 2, characterized in that: A pair of fixed plates (10) are fixedly connected to the spraying workbench (1), and one end of the polished rod (23) facing away from the bearing seat (2) is fixedly connected to the fixed plate (10).

4. A plastic-coated steel pipe inner and outer wall spraying device according to claim 2, characterized in that: The spraying lateral adjustment structure comprises a guide slide (3) fixedly connected to the movable seat (24), a slide seat (31) slidably connected to the guide slide (3), and a fastener (33) threadedly penetrating the slide seat (31) and abutting against the guide slide (3).

5. The device for spraying inner and outer walls of a plastic-coated steel pipe according to claim 4, characterized in that: The spray spacing adjustment structure comprises a support plate (4) fixedly connected to the slide seat (31), a bidirectional screw rod (41) rotatably connected to the inner side of the support plate (4), and a pair of stand seats (42) threadedly connected to the bidirectional screw rod (41), wherein the stand seats (42) are slidably connected to the inner side of the support plate (4).

6. A plastic-coated steel pipe inner and outer wall spraying device according to claim 5, characterized in that: The spray pipe (5) is fixedly passed through the stand (42), one end of the spray pipe (5) is fixedly connected to a spray joint (12), the outer surface of the other end of the spray pipe (5) is fixedly connected to a spray head (11), and the spray heads (11) correspondingly arranged on two adjacent spray pipes (5) are arranged opposite to each other.

7. The device for spraying inner and outer walls of a plastic-coated steel pipe according to claim 2, characterized in that: The rotary transmission assembly comprises a gear 1 (9) fixedly connected to the hollow thread surface of the bidirectional screw rod 1 (21) and a pair of gear 2 (91) meshingly connected to the gear 1 (9), wherein the gear 2 (91) is fixedly connected to one end of the pipe roller (7).

8. The device for spraying inner and outer walls of a plastic-coated steel pipe according to claim 1, characterized in that: The support seat (6) is fixedly connected to a bracket (13), the bracket (13) is fixedly connected to a telescopic device (14), the outer side of the limiting roller (8) is rotatably connected to a roller seat, and the output end of the telescopic device (14) is fixedly connected to the roller seat of the limiting roller (8).

Images