Metal pipe spraying device for robot

Abstract

The application discloses a metal pipe spraying device for a robot, which comprises a bottom plate, a roller device for supporting and rolling a metal pipe and fixed on the top of the bottom plate, a vertical plate fixed on the top of the bottom plate, a double-way screw rod rotatably installed on the outer wall of the vertical plate, a fixed block rotatably installed on the outer wall of the double-way screw rod away from the vertical plate, a guide rod fixed between the fixed block and the vertical plate, a threaded block threadedly connected to the outer wall of the double-way screw rod, a polishing assembly arranged on the threaded block and capable of polishing the inner wall of the metal pipe and the guide rod penetrating through the threaded block. Through cooperation between structures, the metal pipe inner wall is rust-removed, the service life of the metal pipe is prolonged, rust-proof oil is sprayed after rust removal, an oil film is formed on the metal pipe inner wall, the contact between the metal pipe inner wall and oxygen is reduced, the metal pipe inner wall is prevented from being oxidized, and the service life of the metal pipe is further prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal materials, in particular to a metal pipe spraying device for robots. BACKGROUND

[0002] The inner wall of the metal pipe for robots is often difficult to handle, which leads to rust on the inner wall, and thus the inner wall of the metal pipe is corroded, which not only affects the strength of the metal pipe, but also affects the service life of the metal pipe, so it is urgent to remove rust from the inner wall of the metal pipe for robots. SUMMARY

[0003] The purpose of the present application is to provide a metal pipe spraying device for robots, which can clean the rust on the inner wall of the metal pipe, thereby achieving the effect of removing rust from the inner wall of the metal pipe, improving the service life of the metal pipe, and solving the problems in the background art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a metal pipe spraying device for robots, comprising a base plate and a roller device mounted on the top of the base plate for supporting and rolling the metal pipe, a vertical plate is fixed on the top of the base plate, a double screw is rotatably installed on the outer wall of the vertical plate, a fixed block is rotatably installed on the outer wall of the double screw away from the vertical plate, a guide rod is fixed between the fixed block and the vertical plate, a threaded block is threadedly connected to the outer wall of the double screw, a polishing assembly for polishing the inner wall of the metal pipe is arranged on the threaded block, the guide rod penetrates the threaded block, and the penetration portion of the threaded block is slidably connected, and a clamping mechanism for clamping and fixing the metal pipe is detachably installed on one end of the double screw penetrating the fixed block.

[0005] It also includes a driving assembly for driving the clamping mechanism to rotate.

[0006] Preferably, the polishing assembly comprises a polishing block, a swing rod is hinged to the outer wall of the threaded block, the polishing block is fixed to one end of the swing rod away from the threaded block, a sliding block is slidably installed on the outer wall of the guide rod between the fixed block and the threaded block, a support rod is hinged between the outer wall of the sliding block and the outer wall of the swing rod, an electromagnet controlled by an electric control part is fixed to the outer wall of the threaded block close to the sliding block, an iron block is fixed to the outer wall of the sliding block, and the electromagnet is adsorbed and fixed with the iron block.

[0007] Preferably, the electric control part comprises a first contact switch and a second contact switch, the first contact switch is installed on the outer wall of the fixed block close to the sliding block, and the second contact switch is installed on the outer wall of the vertical plate close to the threaded block, when the first contact switch is triggered, the electromagnet is controlled to be de-energized through the circuit, and when the second contact switch is triggered, the electromagnet is controlled to be energized through the circuit.

[0008] Preferably, the spraying mechanism for spraying rust removal oil on the inner wall of the metal pipe comprises a piston tube, the outer wall of the vertical plate is provided with a hole, the piston tube is installed on the inner wall of the hole, a piston rod is fixed on the outer wall of the threaded block close to the outer wall of the vertical plate, one end of the piston rod penetrates into the piston tube and is fixed with a piston plate, the piston plate is in sealing sliding connection with the inner wall of the piston tube, the outer wall of the piston rod away from the piston rod is communicated with a liquid suction tube capable of one-way suction of the rust removal oil, the inner part of the piston rod is provided with a liquid delivery channel capable of one-way extrusion of the rust removal oil, the outer wall of the threaded block is fixed with a liquid spraying tube, one end of the liquid spraying tube away from the threaded block is provided with a spray head, and the liquid spraying tube and the piston rod are communicated with a liquid inlet pipe.

[0009] Preferably, the clamping mechanism comprises a fixed disc which is detachably installed on one end of the bidirectional screw rod penetrating through the fixed block, the outer wall of the fixed disc is fixed with a cross plate, the outer wall of the cross plate is provided with a cross groove, and the outer wall of the cross plate away from the center is provided with a clamp for fixing the metal pipe.

[0010] Preferably, the driving assembly comprises a motor which is fixedly installed on the top of the bottom plate close to the cross plate through a motor fixing seat, one end of the motor output shaft is fixed with a rotating plate, the outer walls of both ends of the rotating plate are rotatably installed with sliding blocks, and both sliding blocks are slidingly installed in the cross groove, and when the rotating plate rotates, the cross plate will be rotated by the two sliding blocks.

[0011] Preferably, the outer wall of the motor output shaft is further provided with a fan blade.

[0012] Preferably, the top of the bottom plate is provided with a liquid storage tank for storing the rust removal oil, one end of the liquid suction tube away from the piston tube is fixed on the outer wall of the liquid storage tank, and the liquid suction tube is communicated with the inner cavity of the liquid storage tank.

[0013] Preferably, the roller device comprises two rotating rollers rotatably installed on the top of the bottom plate through a mounting frame, and the metal pipe is rotatably supported by the two rotating rollers.

[0014] Preferably, the outer wall of the threaded block above the liquid spraying tube is fixed with a baffle.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows:

[0016] Firstly, the present application is provided with a clamping mechanism, a driving assembly, a bidirectional screw rod, a threaded block and a polishing assembly, through the cooperation between the above-mentioned mechanisms, through the rotation of the metal pipe and the movement of the polishing assembly, the rust on the inner wall of the metal pipe can be cleaned, thereby achieving the effect of rust removal on the inner wall of the metal pipe and improving the service life of the metal pipe.

[0017] Secondly, the spraying mechanism is arranged, and cooperation between the spraying mechanism and the above mechanism achieves the effect of spraying the anti-rust oil after rust removal of the inner wall of the metal pipe, so that an oil film is formed on the inner wall of the metal pipe, the contact between the inner wall of the metal pipe and oxygen is reduced, and thus the oxidation of the inner wall of the metal pipe can be prevented, and the service life of the metal pipe can be further improved.

[0018] Thirdly, the fan is arranged, and cooperation between the fan and the above structure achieves the effects that rust removed by grinding can be cleaned and blown out of the metal pipe in the rust removal process, the anti-rust oil can be dried in the anti-rust oil spraying process, the solidification of the oil film is accelerated, the anti-rust oil can be uniformly coated on the inner wall of the metal pipe by the centrifugal force in cooperation with the rotation of the metal pipe, and a uniform oil film is formed, and the anti-rust effect can be further improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front axial perspective view structural schematic diagram of the application;

[0020] Figure 2 It is a front axial perspective view structural schematic diagram of the application; Figure 1 It is an enlarged view structural schematic diagram of position A in the application;

[0021] Figure 3 It is a side sectional perspective view structural schematic diagram of the application;

[0022] Figure 4 It is a front axial perspective view structural schematic diagram of the application; Figure 3 It is an enlarged view structural schematic diagram of position B in the application;

[0023] Figure 5 It is a back axial perspective view structural schematic diagram of the application;

[0024] Figure 6 It is a top sectional perspective view structural schematic diagram of the application.

[0025] In the figure: 1, bottom plate; 2, rotating roller; 3, sliding block; 4, fan blade; 5, motor; 6, rotating plate; 7, cross slot; 8, cross plate; 9, fixed block; 10, clamp; 11, metal pipe; 12, vertical plate; 13, piston pipe; 14, liquid suction pipe; 15, liquid storage tank; 16, first contact switch; 17, bidirectional screw rod; 18, threaded block; 19, swing rod; 20, grinding block; 21, fixed disc; 22, guide rod; 23, second contact switch; 24, piston rod; 25, liquid delivery channel; 26, support rod; 27, sliding block; 28, liquid inlet pipe; 29, electromagnet; 30, liquid spraying pipe. DETAILED DESCRIPTION

[0026] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0027] Please refer to Figures 1 to 6 The present application provides a technical solution: a metal pipe spraying device for a robot, comprising a bottom plate 1 and a roller device installed on the top of the bottom plate 1 for rolling support of the metal pipe 11. The top of the bottom plate 1 is fixed with a vertical plate 12. The outer wall of the vertical plate 12 is rotatably installed with a bidirectional screw rod 17. The outer wall of the bidirectional screw rod 17 away from the vertical plate 12 is rotatably installed with a fixed block 9. The fixed block 9 and the vertical plate 12 are fixed with a guide rod 22. The outer wall of the bidirectional screw rod 17 is threadedly connected with a threaded block 18. The threaded block 18 is provided with a polishing assembly capable of polishing the inner wall of the metal pipe 11. The guide rod 22 penetrates the threaded block 18 and is slidably connected with the penetration of the threaded block 18. One end of the bidirectional screw rod 17 penetrating the fixed block 9 is detachably installed with a clamping mechanism for clamping and fixing the metal pipe 11.

[0028] It also includes a driving assembly for driving the clamping mechanism to rotate.

[0029] First, the clamping mechanism is detached, then the metal pipe 11 is sleeved on the bidirectional screw rod 17, and the rolling support is performed on it through the roller device, then the clamping mechanism is installed on the bidirectional screw rod 17 and clamps and fixes the metal pipe 11, and the driving assembly is started. The driving assembly drives the clamping mechanism to rotate, and at the same time drives the metal pipe 11 and the bidirectional screw rod 17 to rotate together.

[0030] When the bidirectional screw rod 17 rotates, due to the limiting effect of the guide rod 22 on the threaded block 18, the threaded block 18 will reciprocate along the axis of the metal pipe 11 while the bidirectional screw rod 17 rotates, and at the same time drive the polishing assembly to polish the inner wall of the metal pipe 11. In combination with the rotation of the metal pipe 11, the rust on the inner wall of the metal pipe 11 can be cleaned, thereby achieving the effect of rust removal on the inner wall of the metal pipe 11.

[0031] Further, the polishing assembly comprises a polishing block 20. The outer wall of the threaded block 18 is hinged with a swing rod 19. The polishing block 20 is fixed at one end of the swing rod 19 away from the threaded block 18. The outer wall of the guide rod 22 between the fixed block 9 and the threaded block 18 is slidably installed with a sliding block 27. The outer wall of the sliding block 27 and the outer wall of the swing rod 19 are hinged with a support rod 26. The outer wall of the threaded block 18 close to the sliding block 27 is fixed with an electromagnet 29 controlled by an electric control part. The outer wall of the sliding block 27 is fixed with an iron block, and the electromagnet 29 and the iron block are adsorbed and fixed.

[0032] When the threaded block 18 slides towards the fixed block 9, the electromagnet 29 is energized to attract the iron block on the sliding block 27 at this time, the support rod 26 will push the swing lever 19, so that the polishing block 20 fixed on the swing lever 19 is tightly attached to the inner wall of the metal pipe 11, and the metal pipe 11 is polished and rusted along with the movement of the threaded block 18 and the rotation of the metal pipe 11.

[0033] Further, the electric control part comprises a first contact switch 16 and a second contact switch 23, the first contact switch 16 is installed on the outer wall of the fixed block 9 close to the sliding block 27, and the second contact switch 23 is installed on the outer wall of the vertical plate 12 close to the threaded block 18, when the first contact switch 16 is triggered, the electromagnet 29 will be de-energized through the circuit, and when the second contact switch 23 is triggered, the electromagnet 29 will be energized through the circuit.

[0034] When the threaded block 18 moves to contact the second contact switch 23, the second contact switch 23 energizes the electromagnet 29 through the circuit at this time, and then the electromagnet 29 will attract the iron block on the sliding block 27, so as to again attract and fix the sliding block 27 and the threaded block 18, and support the swing lever 19 and the polishing block 20 through the support rod 26 to polish and rust the inner wall of the metal pipe 11.

[0035] When the threaded block 18 moves to contact the first contact switch 16, the first contact switch 16 de-energizes the electromagnet 29 through the circuit at this time, and then the electromagnet 29 cancels the attraction of the iron block on the sliding block 27, and then the threaded block 18 is reversely moved along with the rotation of the bidirectional screw rod 17, at this time, since the support rod 26 does not support the swing lever 19, the polishing block 20 will be separated from the inner wall of the metal pipe 11, so that the threaded block 18 polishes and rusts the inner wall of the metal pipe 11 through the polishing block 20 in the process of single movement.

[0036] Further, it further comprises a spraying mechanism for spraying rust oil on the inner wall of the metal pipe 11, the spraying mechanism comprises a piston pipe 13, the outer wall of the vertical plate 12 is provided with a hole, the piston pipe 13 is installed on the inner wall of the hole, the threaded block 18 is fixed with a piston rod 24 close to the outer wall of the vertical plate 12, one end of the piston rod 24 penetrates into the piston pipe 13 and is fixed with a piston plate, and the piston plate and the inner wall of the piston pipe 13 are sealingly and slidably connected, the outer wall of the piston pipe 13 away from the piston rod 24 is communicated with a liquid suction pipe 14 which can one-way suck rust oil, the inside of the piston rod 24 is provided with a liquid delivery channel 25 which can one-way extrude rust oil, the outer wall of the threaded block 18 is fixed with a liquid spraying pipe 30, one end of the liquid spraying pipe 30 away from the threaded block 18 is installed with a spray head, and the liquid spraying pipe 30 is communicated with the piston rod 24 through a liquid inlet pipe 28, both ends of the liquid inlet pipe 28 are communicated with the spray head and the liquid delivery channel 25 respectively.

[0037] When the threaded block 18 moves towards the fixed block 9, the piston rod 24 is moved together, so that the rust removal oil in the liquid storage tank 15 is sucked into the piston pipe 13 through the liquid suction pipe 14, and the liquid supplementing of the rust removal oil is completed; when the threaded block 18 moves reversely, the piston rod 24 is pressed into the piston pipe 13, and the rust removal oil in the piston pipe 13 is squeezed into the liquid inlet pipe 28 through the liquid delivery channel 25, and then into the liquid spraying pipe 30, and sprayed to the inner wall of the metal pipe 11 through the spray head; and with the movement of the threaded block 18 and the rotation of the metal pipe 11, the rust removal oil is uniformly sprayed to the inner wall of the metal pipe 11, so that an oil film is formed on the inner wall of the metal pipe 11, the oxidation of the inner wall of the metal pipe 11 is prevented, and the effect of rust removal and rust prevention of the inner wall of the metal pipe 11 is achieved, thereby prolonging the service life of the metal pipe 11.

[0038] Moreover, the length of the piston pipe 13 can be adjusted according to the length of the metal pipe 11, so as to adapt to metal pipes 11 of different lengths.

[0039] Meanwhile, since the rust removal oil just sprayed on the inner wall of the metal pipe 11 is in a flowable liquid state, under normal circumstances, the rust removal oil will flow along the inner wall of the metal pipe 11 to the bottom inner wall, thereby causing the thickness of the oil film formed by the rust removal oil to be uneven, and further affecting the rust prevention effect; and the rotation of the metal pipe 11 can make the rust removal oil uniformly coated on the inner wall of the metal pipe 11 under the action of centrifugal force, so that a uniform oil film is formed, and the rust prevention effect of the rust prevention oil is further improved.

[0040] Further, the clamping mechanism comprises a fixed disc 21 which is detachably installed at one end of the double-way screw rod 17 penetrating through the fixed block 9, the outer wall of the fixed disc 21 is fixed with a cross plate 8, the outer wall of the cross plate 8 is provided with a cross groove 7, and the outer wall away from the center of the cross plate 8 is provided with a clamp 10 for fixing the metal pipe 11.

[0041] Through the detachable installation between the fixed disc 21 and the double-way screw rod 17, the feeding and discharging of the metal pipe 11 can be facilitated, and the metal pipe 11 can be clamped and fixed through the clamp 10, and the clamp 10 can be fixed to the metal pipe 11 in a bolt manner.

[0042] Further, the driving assembly comprises a motor 5 which is fixedly installed on the top of the bottom plate 1 near the cross plate 8 through a motor fixing seat, one end of the output shaft of the motor 5 is fixed with a rotating plate 6, the outer walls of both ends of the rotating plate 6 are rotatably installed with sliding blocks 3, and the two sliding blocks 3 are slidably installed in the cross groove 7, and when the rotating plate 6 rotates, the cross plate 8 is rotated through the two sliding blocks 3.

[0043] The starting motor 5 is started, the output shaft of the motor 5 rotates to drive the rotating plate 6 to rotate, and then the rotating plate 6 drives the two sliding blocks 3 to rotate. Through the sliding cooperation of the sliding blocks 3 and the cross groove 7, the two sliding blocks 3 slide along the inner wall of the cross groove 7, thereby driving the cross plate 8 to rotate, and further driving the metal pipe 11 to rotate.

[0044] Further, the outer wall of the output shaft of the motor 5 is also provided with a fan blade 4.

[0045] The output shaft of the motor 5 also drives the fan blade 4 to rotate, thereby blowing the metal pipe 11. Since the rust powder polished off falls to the bottom of the metal pipe 11, the rotation and blowing of the fan blade 4 can clean the rust powder out of the metal pipe 11, and the rotation and blowing of the fan blade 4 can accelerate the solidification of the rust removal oil, thereby accelerating the formation of the oil film.

[0046] Further, the top of the bottom plate 1 is provided with a liquid storage tank 15 for storing rust removal oil. The liquid suction pipe 14 is fixed to the outer wall of the liquid storage tank 15 away from the piston pipe 13, and the liquid suction pipe 14 is in communication with the inner cavity of the liquid storage tank 15.

[0047] The rust removal oil in the liquid storage tank 15 can be intermittently sucked into the piston pipe 13 through the liquid suction pipe 14, and the automatic liquid supplementing of the piston pipe 13 can be completed. Only the rust-proof oil needs to be supplemented into the liquid storage tank 15 periodically.

[0048] Further, the roller device includes two rotating rollers 2 rotatably mounted on the top of the bottom plate 1 through the mounting frame, and the metal pipe 11 is supported by rolling through the two rotating rollers 2.

[0049] The two rotating rollers 2 can provide rolling support to the metal pipe 11, which can support the metal pipe 11 to prevent it from tilting due to gravity, and can also reduce the frictional resistance between the metal pipe 11 and the two rotating rollers 2.

[0050] Further, the outer wall of the threaded block 18 located above the liquid spraying pipe 30 is fixed with a baffle.

[0051] The baffle can shield the liquid spraying pipe 30, prevent rust from falling on the spray head installed on the liquid spraying pipe 30 from above, prevent the spray head from being blocked, and also avoid the spray head from spraying the fallen rust onto the inner wall of the metal pipe 11 again when spraying the rust-proof oil, thereby further improving the rust-proof effect.

[0052] Working principle: when the robot metal pipe spraying device is used, first, the fixed disc 21 and the cross plate 8 installed thereon are removed from one end of the bidirectional screw rod 17, then the metal pipe 11 is sleeved on the bidirectional screw rod 17, and the metal pipe 11 is supported by rolling through the two rotating rollers 2, then the fixed disc 21 is installed on the bidirectional screw rod 17, and then the inner and outer walls of the metal pipe 11 are clamped and fixed through the clamp 10.

[0053] Start the motor 5, and the output shaft of the motor 5 rotates to drive the rotating plate 6 to rotate, and then the rotating plate 6 simultaneously drives the two sliding blocks 3 and the fan blades 4 to rotate, and through the sliding cooperation of the sliding blocks 3 and the cross grooves 7, the two sliding blocks 3 slide along the inner wall of the cross grooves 7, thereby driving the cross plate 8 to rotate, and further driving the metal pipe 11 to rotate.

[0054] When the cross plate 8 rotates, the fixed disc 21 and the bidirectional screw rod 17 are driven to rotate, and since the guide rod 22 limits the threaded block 18, the threaded block 18 slides along the axis of the metal pipe 11 reciprocally with the rotation of the bidirectional screw rod 17, when the threaded block 18 slides towards the fixed block 9, the electromagnet 29 is energized to attract and fix the iron block on the sliding block 27, at this time, the support rod 26 pushes the swing lever 19, so that the polishing block 20 fixed thereon tightly adheres to the inner wall of the metal pipe 11, and with the movement of the threaded block 18 and the self-rotation of the metal pipe 11, the inner wall of the metal pipe 11 is polished and rusted, and the rust powder polished off falls to the bottom of the metal pipe 11, and is blown out of the metal pipe 11 by the rotation of the fan blades 4.

[0055] At the same time, the threaded block 18 moves towards the fixed block 9, which drives the piston rod 24 to move, thereby sucking the rust removal oil in the liquid storage tank 15 into the piston pipe 13 through the liquid suction pipe 14, completing the liquid supplement of the rust removal oil.

[0056] Then when the sliding block 27 moves to contact the first contact switch 16, at this time the first contact switch 16 is powered off by the circuit control, at this time the electromagnet 29 cancels the adsorption of the iron block on the sliding block 27, then the threaded block 18 is moved in the opposite direction with the rotation of the bidirectional screw rod 17, at this time the polishing block 20 is separated from the inner wall of the metal pipe 11 due to the lack of support of the support rod 26 on the swing lever 19, and when the threaded block 18 moves in the opposite direction, the piston rod 24 is also pressed into the piston pipe 13, and the rust removal oil in the piston pipe 13 is squeezed into the liquid inlet pipe 28 through the infusion channel 25, and then into the liquid outlet pipe 30, and is sprayed to the inner wall of the metal pipe 11 through the nozzle, and the rust removal oil is uniformly sprayed to the inner wall of the metal pipe 11 with the movement of the threaded block 18 and the rotation of the metal pipe 11, and the condensation of the rust removal oil is accelerated with the rotation of the fan blade 4, so that an oil film is formed on the inner wall of the metal pipe 11 to prevent oxidation of the inner wall of the metal pipe 11, thereby achieving the effect of rust removal and rust prevention treatment after the rust removal of the inner wall of the metal pipe 11, and prolonging the service life of the metal pipe 11.

[0057] Then when the threaded block 18 moves to contact the second contact switch 23, at this time the second contact switch 23 is powered on by the circuit control, at this time the electromagnet 29 will adsorb the iron block on the sliding block 27, thereby again adsorbing and fixing the sliding block 27 and the threaded block 18, and supporting the swing lever 19 and the polishing block 20 through the support rod 26, then the metal pipe 11 after rust removal is taken down, and the metal pipe 11 to be treated is installed again.

[0058] The standard parts used in the embodiment can be directly purchased from the market, and the non-standard structural parts according to the description and drawings can also be processed according to the existing technical knowledge without doubt, and the connection mode of each part adopts the mature conventional means in the existing technology, and the machinery, parts and equipment adopt the conventional models in the existing technology, so specific description is not made here.

[0059] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A metal pipe spraying device for robots, comprising a base plate (1) and a roller device mounted on top of the base plate (1) for rolling support of a metal pipe (11), characterized in that: A vertical plate (12) is fixed to the top of the base plate (1). A bidirectional screw (17) is rotatably installed on the outer wall of the vertical plate (12). A fixing block (9) is rotatably installed on the outer wall of the bidirectional screw (17) away from the vertical plate (12). A guide rod (22) is fixed between the fixing block (9) and the vertical plate (12). A threaded block (18) is threaded to the outer wall of the bidirectional screw (17). A grinding component for grinding the inner wall of the metal tube (11) is provided on the threaded block (18). The guide rod (22) passes through the threaded block (18) and is slidably connected to the through point of the threaded block (18). A clamping mechanism for clamping and fixing the metal tube (11) is detachably installed at one end of the bidirectional screw (17) that passes through the fixing block (9). It also includes a drive assembly for driving the clamping mechanism to rotate; The grinding assembly includes a grinding block (20), a rocker arm (19) is hinged to the outer wall of the threaded block (18), the grinding block (20) is fixed at the end of the rocker arm (19) away from the threaded block (18), a sliding block (27) is slidably installed on the outer wall of the guide rod (22) located between the fixed block (9) and the threaded block (18), a support rod (26) is hinged between the outer wall of the sliding block (27) and the outer wall of the rocker arm (19), an electromagnet (29) controlled by an electronic control unit is fixed to the outer wall of the threaded block (18) near the sliding block (27), an iron block is fixed to the outer wall of the sliding block (27), and the electromagnet (29) is attracted and fixed to the iron block; The electronic control unit includes a first contact switch (16) and a second contact switch (23). The first contact switch (16) is installed on the outer wall of the fixed block (9) near the sliding block (27), and the second contact switch (23) is installed on the outer wall of the vertical plate (12) near the threaded block (18). When the first contact switch (16) is triggered, it will control the electromagnet (29) to be de-energized through the circuit. When the second contact switch (23) is triggered, it will control the electromagnet (29) to be energized through the circuit. It also includes a spraying mechanism for spraying rust-removing oil onto the inner wall of the metal tube (11). The spraying mechanism includes a piston tube (13). A hole is opened on the outer wall of the vertical plate (12). The piston tube (13) is installed on the inner wall of the hole. A piston rod (24) is fixed to the threaded block (18) near the outer wall of the vertical plate (12). One end of the piston rod (24) passes into the piston tube (13) and is fixed with a piston plate. The piston plate and the inner wall of the piston tube (13) are in a sealed sliding connection. The piston tube (13) is away from the piston. The outer wall of the rod (24) is connected to a suction pipe (14) that can draw in rust-removing oil in one direction. The piston rod (24) has a delivery channel (25) that can extrude rust-removing oil in one direction. The outer wall of the threaded block (18) is fixed with a spray pipe (30), and a nozzle is installed at the end of the spray pipe (30) away from the threaded block (18). The spray pipe (30) and the piston rod (24) are connected by an inlet pipe (28), and the two ends of the inlet pipe (28) are connected to the nozzle and the delivery channel (25) respectively.

2. The metal pipe spraying device for robots according to claim 1, characterized in that: The clamping mechanism includes a fixed plate (21), which is detachably installed at one end of the bidirectional screw (17) passing through the fixed block (9). A cross plate (8) is fixed on the outer wall of the fixed plate (21), and a cross groove (7) is provided on the outer wall of the cross plate (8). A clamp (10) for fixing the metal tube (11) is provided on the outer wall of the cross plate (8) away from the center.

3. The metal pipe spraying device for robots according to claim 2, characterized in that: The drive assembly includes a motor (5), which is fixedly mounted on the top of the base plate (1) near the cross plate (8) via a motor mounting bracket. A rotating plate (6) is fixed to one end of the output shaft of the motor (5). Slider (3) is rotatably mounted on the outer walls of both ends of the rotating plate (6). Both sliders (3) are slidably mounted in the cross groove (7). When the rotating plate (6) rotates, the cross plate (8) will be rotated by the two sliders (3).

4. The metal pipe spraying device for robots according to claim 3, characterized in that: The outer wall of the output shaft of the motor (5) is also fitted with fan blades (4).

5. The metal pipe spraying device for robots according to claim 1, characterized in that: The top of the base plate (1) is equipped with a liquid storage tank (15) for holding rust removal oil. The end of the suction pipe (14) away from the piston pipe (13) is fixed to the outer wall of the liquid storage tank (15), and the suction pipe (14) is connected to the inner cavity of the liquid storage tank (15).

6. The metal pipe spraying device for robots according to claim 1, characterized in that: The roller device includes two rotating rollers (2) that are rotatably mounted on the top of the base plate (1) via a mounting bracket, and the metal tube (11) is supported by the two rotating rollers (2).

7. The metal pipe spraying device for robots according to claim 1, characterized in that: A baffle is fixed to the outer wall of the threaded block (18) located above the spray pipe (30).

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