A pipe inner wall spraying machine

Abstract

The present invention relates to the technical field of spraying machines, and specifically to a pipe inner wall spraying machine, comprising a bottom plate, a side plate, a drive clamping assembly, a high-pressure air pipe, a cleaning assembly, a paint pipe, a spraying assembly, a protective cover and a bracket. The machine can clean the inner wall of an arc-shaped pipe with different inner diameters before spraying. Remote quality inspection can be performed after any cleaning and spraying process is completed. During the cleaning and spraying operations, the arc-shaped pipe actively moves. Compared with traditional spraying methods, it is easier to control the spraying distance. During spraying, a uniform brushing process can be performed, thereby improving the spraying quality and meeting the spraying requirements.

Description

Technical Field

[0001] The invention relates to the technical field of spraying machines, in particular to a pipeline inner wall spraying machine. Background Art

[0002] A sprayer is a special coating equipment that uses spraying technology. It sucks in the paint, pressurizes it, and sprays it onto the surface of the workpiece through a spray gun. At present, in the field of pipe inner wall spraying, for the spraying of the inner wall of a straight pipe, the insertion spraying method is mostly used, that is, the spray gun is inserted into the pipe along the central axis of the straight pipe for spraying. However, for curved pipes, the traditional spraying operation is used. The movement and positioning of the spray gun inside the curved pipe are relatively complicated, and it is difficult to ensure the spraying quality. Especially in the curved part of the pipe, it is easy to spray too thick or too thin, which is difficult to meet the spraying requirements.

[0003] In view of the above problems, the present invention proposes a spraying machine for spraying the inner wall of an arc-shaped pipeline. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a pipe inner wall sprayer, which can clean the inner walls of arc-shaped pipes with different inner diameters before spraying, and can perform remote quality inspection after any cleaning and spraying process is completed. During the cleaning and spraying operations, the arc-shaped pipe actively moves, which is easier to control the spraying distance than the traditional spraying method. At the same time, it can be evenly brushed during spraying, which improves the spraying quality and meets the spraying requirements.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a pipe inner wall spraying machine, comprising a bottom plate and a side plate fixedly installed on the upper edge of the bottom plate, a driving clamping assembly is fixedly installed on the middle of the upper surface of the bottom plate, a high-pressure air pipe is fixedly installed on the side wall of the side plate close to the driving clamping assembly, a cleaning assembly is connected to the end of the high-pressure air pipe away from the side plate, a paint pipe is fixedly installed on the side plate of the side of the high-pressure air pipe, and a spraying assembly is connected to the end of the paint pipe away from the side plate;

[0006] The cleaning assembly includes an arc-shaped column rod, the end of the high-pressure air pipe away from the side plate is connected to the arc-shaped column rod, a first chamber is opened in the arc-shaped column rod near the high-pressure air pipe, the interior of the first chamber is connected to the high-pressure air pipe and a plurality of air outlet holes are opened on the side wall of the first chamber, a second chamber is opened in the arc-shaped column rod away from the high-pressure air pipe, an adjustment unit is slidably arranged in the second chamber, a grinding head is connected to the end of the arc-shaped column rod away from the high-pressure air pipe, the grinding head is hollow and the interior of the grinding head is connected to the interior of the second chamber;

[0007] The circumferential side wall of the grinding head is made of elastic material and cleaning bristles are arranged on the outer side wall of the circumferential side wall.

[0008] Preferably, the driving and clamping assembly includes an electric push rod No. 1, which is fixedly installed in the middle of the upper end surface of the base plate, a bidirectional motor is fixedly connected to the upper end of the electric push rod No. 1, a driving connector is fixedly connected to the upper end of the bidirectional motor, a slide cylinder is fixedly installed on the side wall of the driving connector, a sliding rod is slidably installed inside the slide cylinder, a clamping unit is installed at the end of the slide rod away from the slide cylinder, and jacks are linearly arranged in the middle of the upper end of the slide cylinder, and alignment holes are corresponding to the positions of the slide rods inside the slide cylinder, and a limiting plug-in passes through the jack and the alignment hole and fixes the slide cylinder and the slide rod to each other.

[0009] Preferably, a laser receiver is arranged on the side wall of the driving connector facing the side plate, the laser receiver is electrically connected to the No. 1 electric push rod, and a laser transmitter is fixedly mounted on the side plate corresponding to the laser receiver.

[0010] Preferably, the clamping unit includes a vertical plate, the end of the sliding rod away from the sliding cylinder is fixedly connected to the vertical plate, a rectangular sliding groove is symmetrically opened in the middle of the vertical plate, a clamping plate is slidably installed in the rectangular sliding groove through a buffer spring, an installation groove is opened on the sliding rod near the vertical plate, a No. 2 electric push rod is arranged in the installation groove, the protruding end of the No. 2 electric push rod is fixedly connected to a push rod, pull rods are hinged at both ends of the push rod, and the end of the pull rod away from the push rod is hinged to one end of the clamping plate.

[0011] Preferably, the high-pressure air pipe and the paint pipe are both provided with protective covers on the outside, the side wall of the protective cover is fixedly mounted with a bracket, and the lower end of the bracket is fixedly mounted on the bottom plate.

[0012] Preferably, the adjustment unit includes a cylindrical plug, a cylindrical plug is provided for sliding sealing in the second chamber, an adjusting rod is fixedly connected to the side of the cylindrical plug away from the grinding head, a shift rod is fixedly connected to the upper end of the adjusting rod, a limiting slide groove is provided above the second chamber, a continuous card groove is provided on one side of the limiting slide groove, and the shift rod is slidably installed in the limiting slide groove.

[0013] Preferably, a camera probe is fixedly installed at the middle of the side wall of the grinding head away from the arc-shaped column, and electromagnetic valves are evenly installed around the camera probe, and the electromagnetic valves are connected to the inside of the grinding head.

[0014] Preferably, the spray assembly includes a spray connector, the end of the paint pipe away from the side panel is connected to the spray connector, paint spray nozzles are evenly installed along the circumference of the side wall of the spray connector away from the paint pipe, a threaded section is provided on the spray connector close to the paint pipe, a limit plate is fixedly installed on the spray connector between the threaded section and the paint spray nozzle, an ejection unit is arranged inside the limit plate, and a brush-leveling rubber ring is sleeved on the outer side wall of the limit plate.

[0015] Preferably, the ejection unit includes a sliding disk, a sliding disk is sleeved on the outer side of the threaded section, an internal threaded rotating member is provided on the side of the sliding disk away from the limiting disk, the internal threaded rotating member is screwed on the threaded section and abuts against the sliding disk, the side wall of the sliding disk facing the limiting disk is hinged with inclined rods evenly along its circumference, the end of the inclined rod away from the sliding disk is hinged with a push rod, the push rod passes through the side wall of the limiting disk and abuts against the inner wall of the brush rubber ring.

[0016] Preferably, the brush-leveling rubber ring is made of elastic material and a flexible layer is provided on its outer side wall.

[0017] Beneficial effects of the present invention:

[0018] 1. The set drive clamping assembly can clamp and fix arc pipes with different inner diameters and can automatically center them. While ensuring the clamping and fixing effect, it also ensures the accuracy of the alignment of the arc pipe to be sprayed, which is conducive to improving the quality of subsequent cleaning and spraying;

[0019] 2. The cleaning component can clean the arc pipe first. With the cooperation of the high-pressure air pipe, the cleaning quality is guaranteed. At the same time, after the cleaning is completed, the camera probe can remotely inspect the inner wall of the arc pipe, which is conducive to controlling the subsequent spraying quality. After the spraying is completed, the camera probe can remotely inspect the spraying condition of the inner wall of the arc pipe, which is conducive to improving the qualified rate of arc pipe spraying;

[0020] 3. The overall arc-shaped pipeline is used for active movement, and the cleaning components and spraying components are fixed. Compared with the traditional spraying method, it is easier to control the spraying distance. At the same time, it can be evenly brushed during spraying, which improves the spraying quality and can meet the spraying requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 is a first three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 The present invention Figure 1 A schematic diagram of a three-dimensional structure from another perspective;

[0024] Figure 3 The present invention Figure 2 Schematic diagram of the three-dimensional structure after removing the protective cover and the bracket;

[0025] Figure 4 It is a cross-sectional three-dimensional structural schematic diagram of the slide cylinder, slide rod, plug hole, limit plug-in unit and clamping unit in the present invention;

[0026] Figure 5It is a schematic diagram of the cross-sectional three-dimensional connection structure between the high-pressure air pipe and the cleaning component in the present invention;

[0027] Figure 6 The present invention Figure 1 A schematic diagram of the enlarged structure at point A;

[0028] Figure 7 It is a schematic diagram of the three-dimensional connection structure between the paint pipeline and the spraying assembly in the present invention;

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the limiting plate in the present invention.

[0030] In the figure:

[0031] 1. Bottom plate; 2. Side plate; 3. Drive clamping assembly; 31. No. 1 electric push rod; 32. Bidirectional motor; 33. Drive connector; 331. Laser receiver; 332. Laser transmitter; 34. Slide; 35. Slide rod; 36. Socket; 37. Limit plug-in;

[0032] 38. Clamping unit; 381. Vertical plate; 382. No. 2 electric push rod; 383. Push rod; 384. Pull rod; 385. Rectangular slide; 386. Clamping plate; 387. Buffer spring;

[0033] 4. High-pressure air pipe; 5. Cleaning assembly; 51. Arc-shaped column; 52. First chamber; 53. Second chamber;

[0034] 54, adjustment unit; 541, cylindrical plug; 542, adjustment rod; 543, lever; 544, slot;

[0035] 55. Grinding head; 551. Cleaning brush; 552. Camera probe; 553. Solenoid valve;

[0036] 6. Paint pipe; 7. Spraying assembly; 71. Spraying connector; 72. Spraying nozzle; 73. Threaded section; 74. Limiting plate; 75. Ejector unit; 751. Sliding plate; 752. Inclined rod; 753. Ejector rod; 754. Internal thread rotating part; 76. Brushing rubber ring;

[0037] 8. Protective cover; 9. Bracket. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] Embodiment 1:

[0040] See also Figures 1 to 4A pipe inner wall spraying machine comprises a bottom plate 1 and a side plate 2 fixedly mounted on the upper edge of the bottom plate 1, wherein a driving clamping assembly 3 is fixedly mounted on the middle of the upper end surface of the bottom plate 1.

[0041] The driving and clamping assembly 3 includes an electric push rod No. 1 31, which is fixedly installed in the middle of the upper end surface of the base plate 1, and a bidirectional motor 32 is fixedly connected to the upper end of the electric push rod No. 1 31, and a driving connector 33 is fixedly connected to the upper end of the bidirectional motor 32, and a slide cylinder 34 is fixedly installed on the side wall of the driving connector 33, and a slide rod 35 is slidably installed inside the slide cylinder 34, and a clamping unit 38 is installed at the end of the slide rod 35 away from the slide cylinder 34, and a plug hole 36 is linearly arranged in the middle of the upper end of the slide cylinder 34, and a positioning hole is correspondingly opened at the position where the slide rod 35 is located inside the slide cylinder 34, and a limiting plug-in 37 passes through the plug hole 36 and the positioning hole and fixes the slide cylinder 34 and the slide rod 35 to each other.

[0042] A laser receiver 331 is provided on the side wall of the driving connector 33 facing the side plate 2 . The laser receiver 331 is electrically connected to the first electric push rod 31 . A laser transmitter 332 is fixedly mounted on the side plate 2 corresponding to the laser receiver 331 .

[0043] The clamping unit 38 includes a vertical plate 381, and the end of the slide rod 35 away from the slide cylinder 34 is fixedly connected to the vertical plate 381. A rectangular slide groove 385 is symmetrically opened in the middle of the vertical plate 381, and a clamping plate 386 is slidably installed in the rectangular slide groove 385 through a buffer spring 387. An installation groove is opened on the slide rod 35 near the vertical plate 381, and a No. 2 electric push rod 382 is arranged in the installation groove. The protruding end of the No. 2 electric push rod 382 is fixedly connected to a push rod 383, and pull rods 384 are hinged at both ends of the push rod 383. The end of the pull rod 384 away from the push rod 383 is hinged to one end of the clamping plate 386.

[0044] In this embodiment, the pipe workpiece to be sprayed is an arc-shaped pipe. The bend radius described in this article is the distance from the center axis of the arc-shaped pipe to the center of its end cross section. The cleaning component 5 and the spraying component 7 are on the same circular arc.

[0045] During the specific operation, the No. 1 electric push rod 31 is first started, and the clamping assembly 3 is driven to move downward to a suitable distance by the No. 1 electric push rod 31, and then the relative position between the slide rod 35 and the slide cylinder 34 is manually adjusted according to the bending radius of the arc-shaped pipeline and the two are fixed by the limit plug 37, so that the distance from the central axis of the bidirectional motor 32 to the middle of the clamping plate 386 is equal to the distance from the central axis of the bidirectional motor 32 to the center of the cross section of the end of the cleaning assembly 5 and the spraying assembly 7;

[0046] The arc-shaped pipe to be sprayed is manually placed in the middle of the upper end of the clamping plate 386 on the lower side, so that the concave surface of the arc-shaped pipe to be sprayed faces the bidirectional motor 32, and the No. 2 electric push rod 382 is started. The No. 2 electric push rod 382 contracts and pulls the push rod 383. At this time, under the action of the pull rod 384, the clamping plates 386 on the upper and lower sides will make relative movements, thereby clamping and fixing the arc-shaped pipe to be sprayed, and automatically aligning it at the same time. The No. 1 electric push rod 31 is started again, and the clamping assembly 3 and the clamped arc-shaped pipe to be sprayed are driven to move upward by the No. 1 electric push rod 31. When the laser receiver 331 receives the laser signal emitted by the laser transmitter 332, the No. 1 electric push rod 31 stops running. At this time, the arc-shaped pipe to be sprayed, the cleaning assembly 5 and the spraying assembly 7 are on the same circular arc.

[0047] Embodiment 2:

[0048] The technical solution is basically the same as that of the first embodiment, see Figures 1 to 3 as well as Figure 5 and Figure 6 The difference lies in that a high-pressure air pipe 4 is fixedly installed on the side wall of the side plate 2 close to the driving clamping assembly 3, and a cleaning assembly 5 is connected to the end of the high-pressure air pipe 4 away from the side plate 2. The cleaning assembly 5 includes an arc-shaped column rod 51, and the end of the high-pressure air pipe 4 away from the side plate 2 is connected to the arc-shaped column rod 51. A first chamber 52 is opened in the arc-shaped column rod 51 near the high-pressure air pipe 4. The interior of the first chamber 52 is connected to the high-pressure air pipe 4 and a plurality of air outlet holes are opened on the side wall of the first chamber 52. A second chamber 53 is opened in the arc-shaped column rod 51 away from the high-pressure air pipe 4. An adjusting unit 54 is slidably arranged in the second chamber 53. A grinding head 55 is connected to the end of the arc-shaped column rod 51 away from the high-pressure air pipe 4. The grinding head 55 has a hollow structure and its interior is connected to the interior of the second chamber 53.

[0049] The adjustment unit 54 includes a cylindrical plug 541, and a cylindrical plug 541 is provided in the second chamber 53 for sliding sealing. An adjusting rod 542 is fixedly connected to the side of the cylindrical plug 541 away from the grinding head 55, and a shift rod 543 is fixedly connected to the upper end of the adjusting rod 542. A limiting slide groove is provided above the second chamber 53, and a continuous card groove 544 is provided on one side of the limiting slide groove. The shift rod 543 is slidably installed in the limiting slide groove.

[0050] The circumferential side wall of the grinding head 55 is made of elastic material and cleaning bristles 551 are arranged on the outer side wall of the circumferential side wall. A camera probe 552 is fixedly installed in the middle of the side wall of the grinding head 55 away from the arc column 51. Electromagnetic valves 553 are evenly installed around the camera probe 552, and the electromagnetic valve 553 is connected to the inside of the grinding head 55.

[0051] One thing that needs to be explained is that the "clockwise" and "counterclockwise" mentioned in this article are both looking from top to bottom.

[0052] During specific operation, the bidirectional motor 32 is started, and the bidirectional motor 32 drives the clamping assembly 3 and the arc-shaped pipe to be sprayed to rotate counterclockwise after being clamped. When the arc-shaped pipe to be sprayed moves to the outside of the grinding head 55 close to the end of the cleaning assembly 5, the bidirectional motor 32 pauses briefly, and the lever 543 is manually moved to drive the cylindrical plug 541 and the adjusting rod 542 to move toward the grinding head 55. At this time, the air inside the second chamber 53 will be squeezed into the grinding head 55 and the side wall of the grinding head 55 will expand until the side wall of the grinding head 55 fits the inner wall of the arc-shaped pipe to be sprayed, and then the lever 543 is clamped to the corresponding clamping groove 544, and then the bidirectional motor 32 drives the arc-shaped pipe to be sprayed to continue to rotate counterclockwise. In this process, the cleaning assembly 5 set on the outside of the grinding head 55 The cleaning bristles 551 can clean the inner wall of the arc-shaped pipe to be sprayed, thereby brushing off the rust and dirt on the inner wall, and the brushed off rust and dirt will gather on the uncleaned side of the arc-shaped pipe to be sprayed. When the arc-shaped pipe to be sprayed moves to the air outlet opened on the side wall of the first chamber 52, the high-pressure airflow ejected from the high-pressure air pipe 4 can further perform air blowing on the inner wall of the arc-shaped pipe to be sprayed. Since there is a certain air gap between the cleaning bristles 551 and the inner wall of the arc-shaped pipe to be sprayed, a part of the high-pressure airflow can pass through the air gap between the two, which is conducive to the brushed off rust and dirt from being separated from the inside of the arc-shaped pipe to be sprayed. At the same time, another part of the high-pressure airflow is blown out from the clean end of the arc-shaped pipe to be sprayed, thereby improving the cleaning efficiency of the inner wall of the arc-shaped pipe to be sprayed.

[0053] When the arc-shaped pipe to be sprayed moves to the point where the grinding head 55 is exposed, the electromagnetic valve 553 is manually controlled to open. At this time, the air inside the grinding head 55 will be blown toward the camera probe 552 through the electromagnetic valve 553, thereby cleaning the surface of the camera probe 552, and the grinding head 55 will be separated from the inner wall of the arc-shaped pipe to be sprayed. Then, the bidirectional motor 32 drives the driving clamping assembly 3 and the cleaned arc-shaped pipe to be sprayed to rotate clockwise and reset. During this process, the camera probe 552 can photograph the condition of the inner wall of the arc-shaped pipe to be sprayed and feed it back to the terminal. At this time, the staff can judge whether there are grooves or cracks on the inner wall of the arc-shaped pipe to be sprayed by observing the picture displayed on the terminal. If grooves or cracks appear, the driving clamping assembly 3 should be controlled to release the clamping and fixing effect on the arc-shaped pipe to be sprayed after the arc-shaped pipe to be sprayed is reset. Then, the arc-shaped pipe to be sprayed is removed, replaced with a new arc-shaped pipe to be sprayed, and the above operation is repeated until the terminal screen shows that there are no depressions or cracks on the inner wall of the arc-shaped pipe to be sprayed.

[0054] Embodiment three:

[0055] The technical solution is basically the same as that of the first embodiment, see Figures 1 to 3 as well as Figure 7 and Figure 8 The difference is that a paint pipe 6 is fixedly installed on the side plate 2 on the side of the high-pressure air pipe 4, and the end of the paint pipe 6 away from the side plate 2 is connected to a spray assembly 7, and a protective cover 8 is provided on the outside of the high-pressure air pipe 4 and the paint pipe 6, and a bracket 9 is fixedly installed on the side wall of the protective cover 8, and the lower end of the bracket 9 is fixedly installed on the bottom plate 1.

[0056] The spray assembly 7 includes a spray connector 71, and the end of the paint pipe 6 away from the side panel 2 is connected to the spray connector 71. The side wall of the spray connector 71 away from the paint pipe 6 is evenly installed with paint nozzles 72 along its circumference. A threaded section 73 is provided on the spray connector 71 near the paint pipe 6. A limiting plate 74 is fixedly installed on the spray connector 71 between the threaded section 73 and the paint nozzle 72. An ejection unit 75 is arranged inside the limiting plate 74. A brush-leveling rubber ring 76 is sleeved on the outer wall of the limiting plate 74. The brush-leveling rubber ring 76 is made of elastic material and a flexible layer is arranged on its outer wall.

[0057] The ejection unit 75 includes a sliding disk 751, and the sliding disk 751 is sleeved on the outer side of the threaded section 73. An internal threaded rotating member 754 is provided on the side of the sliding disk 751 away from the limiting disk 74. The internal threaded rotating member 754 is screwed on the threaded section 73 and abuts against the sliding disk 751. The side wall of the sliding disk 751 facing the limiting disk 74 is evenly hinged with an inclined rod 752 along its circumference. The end of the inclined rod 752 away from the sliding disk 751 is hinged with a push rod 753. The push rod 753 passes through the side wall of the limiting disk 74 and abuts against the inner wall of the brush-leveling rubber ring 76.

[0058] During specific operation, the bidirectional motor 32 is started, and the bidirectional motor 32 drives the clamping assembly 3 and the arc-shaped pipe to be sprayed after cleaning to rotate clockwise. When the arc-shaped pipe to be sprayed moves to the outside of the uniform brushing rubber ring 76 near the end of the spraying assembly 7, the bidirectional motor 32 pauses briefly, and the internal threaded rotating part 754 is manually rotated and the sliding disk 751 is squeezed. Under the action of the inclined rod 752, the push rod 753 will move to the outside of the limiting disk 74 and drive the uniform brushing rubber ring 76 to fit the inner wall of the arc-shaped pipe to be sprayed. Then, the bidirectional motor 32 drives the arc-shaped pipe to be sprayed after cleaning to continue to rotate clockwise. At this time, paint is continuously supplied in the paint pipe 6 and the paint is transported to the paint spray nozzle 72 through the spray connector 71. The inner wall of the arc-shaped pipe is continuously sprayed with paint through the paint spray nozzle 72. During the painting process, the uniform brushing rubber ring 76 can brush the inner wall of the arc-shaped pipe after painting evenly, thereby avoiding dripping on the inner wall after spraying, while ensuring the spraying effect.

[0059] The working principle of the present invention when in use:

[0060] One: First, start the No. 1 electric push rod 31, and drive the clamping assembly 3 to move downward to a suitable distance through the No. 1 electric push rod 31, and then manually adjust the relative position between the slide rod 35 and the slide cylinder 34 according to the bending radius of the arc-shaped pipeline and fix the two with the limit plug 37, so that the distance from the central axis of the bidirectional motor 32 to the middle of the clamping plate 386 is equal to the distance from the central axis of the bidirectional motor 32 to the center of the cross section of the end of the cleaning assembly 5 and the spray assembly 7;

[0061] Second: manually place the arc-shaped pipe to be sprayed on the middle part of the upper end of the clamping plate 386 on the lower side, so that the concave surface of the arc-shaped pipe to be sprayed faces the bidirectional motor 32, start the No. 2 electric push rod 382, ​​and the No. 2 electric push rod 382 contracts and pulls the push rod 383. At this time, under the action of the pull rod 384, the clamping plates 386 on the upper and lower sides will make relative movements, thereby clamping and fixing the arc-shaped pipe to be sprayed, and automatically aligning the pipe at the same time. Start the No. 1 electric push rod 31 again, and drive the clamping assembly 3 and the clamped arc-shaped pipe to be sprayed to move upward through the No. 1 electric push rod 31. When the laser receiver 331 receives the laser signal emitted by the laser transmitter 332, the No. 1 electric push rod 31 stops running. At this time, the arc-shaped pipe to be sprayed, the cleaning assembly 5 and the spray assembly 7 are on the same circular arc line;

[0062] 3. Start the bidirectional motor 32, and drive the clamping assembly 3 and the clamped arc-shaped pipe to be sprayed to rotate counterclockwise through the bidirectional motor 32. When the arc-shaped pipe to be sprayed moves to the outside of the grinding head 55 close to the end of the cleaning assembly 5, the bidirectional motor 32 pauses briefly, and manually moves the lever 543 to drive the cylindrical plug 541 and the adjusting rod 542 to move toward the grinding head 55. At this time, the air inside the second chamber 53 will be squeezed into the grinding head 55 and the side wall of the grinding head 55 will expand until the side wall of the grinding head 55 fits the inner wall of the arc-shaped pipe to be sprayed, and then the lever 543 is clamped to the corresponding clamping groove 544, and then the bidirectional motor 32 drives the arc-shaped pipe to be sprayed to continue to rotate counterclockwise. During this process, the cleaning brush arranged on the outside of the grinding head 55 The bristles 551 can clean the inner wall of the arc-shaped pipe to be sprayed, thereby brushing off the rust and dirt on the inner wall, and the brushed off rust and dirt will gather on the uncleaned side of the arc-shaped pipe to be sprayed. When the arc-shaped pipe to be sprayed moves to the air outlet opened on the side wall of the first chamber 52, the high-pressure airflow ejected from the high-pressure air pipe 4 can further perform air blowing on the inner wall of the arc-shaped pipe to be sprayed. Since there is a certain air gap between the cleaning bristles 551 and the inner wall of the arc-shaped pipe to be sprayed, a part of the high-pressure airflow can pass through the air gap between the two, which is conducive to the brushed off rust and dirt from being separated from the inside of the arc-shaped pipe to be sprayed. At the same time, another part of the high-pressure airflow is blown out from the clean end of the arc-shaped pipe to be sprayed, thereby improving the cleaning efficiency of the inner wall of the arc-shaped pipe to be sprayed.

[0063] Fourth: When the arc-shaped pipe to be sprayed moves to the point where the grinding head 55 is exposed, the electromagnetic valve 553 is manually controlled to open. At this time, the air inside the grinding head 55 will be blown toward the camera probe 552 through the electromagnetic valve 553, thereby cleaning the surface of the camera probe 552, and the grinding head 55 will be separated from the inner wall of the arc-shaped pipe to be sprayed. Then, the bidirectional motor 32 drives the driving clamping assembly 3 and the cleaned arc-shaped pipe to be sprayed to rotate clockwise and reset. During this process, the camera probe 552 can photograph the inner wall of the arc-shaped pipe to be sprayed and feed it back to the terminal. At this time, the staff can judge whether there are grooves or cracks on the inner wall of the arc-shaped pipe to be sprayed by observing the picture displayed on the terminal. If there are grooves or cracks, the driving clamping assembly 3 should be controlled to release the clamping and fixing effect on the arc-shaped pipe to be sprayed after the arc-shaped pipe to be sprayed is reset. Then, the arc-shaped pipe to be sprayed is removed, replaced with a new arc-shaped pipe to be sprayed, and the above operation is repeated until the terminal screen shows that there is no depression or crack on the inner wall of the arc-shaped pipe to be sprayed.

[0064] 5. Start the bidirectional motor 32, and drive the clamping assembly 3 and the arc-shaped pipe to be sprayed after cleaning to rotate clockwise through the bidirectional motor 32. When the arc-shaped pipe to be sprayed moves to the outside of the brushing rubber ring 76 near the end of the spraying assembly 7, the bidirectional motor 32 pauses briefly, and the internal thread rotating member 754 is manually rotated and the sliding plate 751 is squeezed. Under the action of the inclined rod 752, the push rod 753 moves to the outside of the limiting plate 74 and drives the brushing rubber ring 76 to fit the inner wall of the arc-shaped pipe to be sprayed. Then, the bidirectional motor 32 drives the arc-shaped pipe to be sprayed after cleaning to continue to rotate clockwise. At this time, the paint is continuously supplied in the paint pipe 6 and the paint is transported to the paint spray nozzle 72 through the spray connector 71. The inner wall of the arc-shaped pipe is continuously sprayed with paint through the paint spray nozzle 72. During the painting process, the brushing rubber ring 76 can evenly brush the inner wall of the arc-shaped pipe after painting, thereby avoiding dripping on the inner wall after spraying, while ensuring the spraying effect;

[0065] 6. After spraying, the bidirectional motor 32 can be used to drive the clamping assembly 3 and the arc-shaped pipe after spraying to rotate counterclockwise to the outside of the cleaning assembly 5. At this time, the cleaning assembly 5 is not polished, and the camera probe 552 can shoot the inner wall of the arc-shaped pipe after spraying. At this time, the terminal screen is manually observed to determine whether the spraying is qualified. At the same time, the airflow ejected from the air outlet on the outside of the first chamber 52 can accelerate the drying of the paint on the inner wall of the arc-shaped pipe, thereby improving the overall spraying efficiency.

[0066] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pipe inner wall spraying machine, comprising a bottom plate (1) and a side plate (2) fixedly mounted on the upper edge of the bottom plate (1), characterized in that: A driving clamping assembly (3) is fixedly mounted on the middle of the upper end surface of the bottom plate (1); a high-pressure air pipe (4) is fixedly mounted on the side wall of the side plate (2) close to the driving clamping assembly (3); an end of the high-pressure air pipe (4) away from the side plate (2) is connected to a cleaning assembly (5); a paint pipe (6) is fixedly mounted on the side plate (2) at the side of the high-pressure air pipe (4); an end of the paint pipe (6) away from the side plate (2) is connected to a spraying assembly (7); The cleaning component (5) comprises An arc-shaped column rod (51), the end of the high-pressure gas pipe (4) away from the side plate (2) is connected to the arc-shaped column rod (51); A first chamber (52), wherein the first chamber (52) is provided at a position inside the arc-shaped column rod (51) near the high-pressure air pipe (4), the interior of the first chamber (52) is connected to the high-pressure air pipe (4) and a plurality of air outlet holes are provided on a side wall of the first chamber (52); A second chamber (53), wherein the second chamber (53) is provided inside the arc-shaped column rod (51) at a position away from the high-pressure air pipe (4); An adjustment unit (54), wherein the adjustment unit (54) is slidably disposed inside the second chamber (53); A grinding head (55), wherein the end of the arc-shaped column rod (51) away from the high-pressure air pipe (4) is connected to the grinding head (55), and the grinding head (55) is hollow in structure and its interior is connected to the interior of the second chamber (53); The circumferential side wall of the grinding head (55) is made of elastic material and cleaning bristles (551) are arranged on the outer side wall of the circumferential side wall; The spraying assembly (7) comprises a spraying connector (71), the end of the paint pipe (6) away from the side plate (2) is connected to the spraying connector (71), a position of the side wall of the spraying connector (71) away from the paint pipe (6) is evenly installed with spray nozzles (72) along its circumference, a threaded section (73) is provided on the spraying connector (71) at a position close to the paint pipe (6), a limit plate (74) is fixedly installed on the spraying connector (71) between the threaded section (73) and the spray nozzle (72), an ejection unit (75) is arranged inside the limit plate (74), and a brush-leveling rubber ring (76) is sleeved on the outer side wall of the limit plate (74); The ejection unit (75) comprises a sliding disk (751), the sliding disk (751) is sleeved on the outer side of the threaded section (73), an internal thread rotating member (754) is arranged on the side of the sliding disk (751) away from the limiting disk (74), the internal thread rotating member (754) is screwed on the threaded section (73) and abuts against the sliding disk (751), a side wall of the sliding disk (751) facing the limiting disk (74) is evenly hinged with an inclined rod (752) along its circumference, and an end of the inclined rod (752) away from the sliding disk (751) is hinged with an ejector rod (753), and the ejector rod (753) passes through the side wall of the limiting disk (74) and abuts against the inner side wall of the brushing rubber ring (76); The brush-leveling rubber ring (76) is made of elastic material and has a flexible layer disposed on its outer side wall.

2. A pipe inner wall spraying machine according to claim 1, characterized in that: The driving clamping assembly (3) comprises a No. 1 electric push rod (31), the No. 1 electric push rod (31) is fixedly installed in the middle of the upper end surface of the base plate (1), the No. 1 electric push rod (31) is fixedly connected to the upper end of the No. 1 electric push rod (31), the upper end of the No. 1 electric push rod (31) is fixedly connected to the bidirectional motor (32), the upper end of the bidirectional motor (32) is fixedly connected to the driving connector (33), a slide cylinder (34) is fixedly installed on the side wall of the driving connector (33), a slide rod (35) is slidably installed inside the slide cylinder (34), a clamping unit (38) is installed at the end of the slide rod (35) away from the slide cylinder (34), a linearly arranged plug hole (36) is opened in the middle of the upper end of the slide cylinder (34), a corresponding alignment hole is opened at the position where the slide rod (35) is located inside the slide cylinder (34), and a limit plug (37) passes through the plug hole (36) and the alignment hole and fixes the slide cylinder (34) and the slide rod (35) to each other.

3. A pipe inner wall spraying machine according to claim 2, characterized in that: A laser receiver (331) is arranged on the side wall of the driving connector (33) facing the side plate (2); the laser receiver (331) is electrically connected to the first electric push rod (31); and a laser transmitter (332) is fixedly mounted on the side plate (2) corresponding to the laser receiver (331).

4. A pipe inner wall spraying machine according to claim 2, characterized in that: The clamping unit (38) comprises a vertical plate (381), an end of the slide rod (35) away from the slide cylinder (34) is fixedly connected to the vertical plate (381), a rectangular slide groove (385) is symmetrically provided in the middle of the vertical plate (381), a clamping plate (386) is slidably installed in the rectangular slide groove (385) via a buffer spring (387), a mounting groove is provided on the slide rod (35) at a position close to the vertical plate (381), a second electric push rod (382) is arranged in the mounting groove, a push rod (383) is fixedly connected to the protruding end of the second electric push rod (382), a pull rod (384) is hinged at both ends of the push rod (383), and the end of the pull rod (384) away from the push rod (383) is hinged to one end of the clamping plate (386).

5. The pipeline inner wall spraying machine according to claim 1, characterized in that: The high-pressure air pipe (4) and the paint pipe (6) are both provided with a protective cover (8) on the outside, and a bracket (9) is fixedly mounted on the side wall of the protective cover (8), and the lower end of the bracket (9) is fixedly mounted on the bottom plate (1).

6. A pipe inner wall spraying machine according to claim 1, characterized in that: The adjustment unit (54) comprises a cylindrical plug (541), a cylindrical plug (541) is provided in a sliding seal in the second chamber (53), an adjustment rod (542) is fixedly connected to the side of the cylindrical plug (541) away from the grinding head (55), a lever (543) is fixedly connected to the upper end of the adjustment rod (542), a limiting slide groove is provided above the second chamber (53), a continuous clamping groove (544) is provided on one side of the limiting slide groove, and the lever (543) is slidably installed in the limiting slide groove.

7. The pipeline inner wall spraying machine according to claim 1, characterized in that: A camera probe (552) is fixedly mounted on the middle of the side wall of the grinding head (55) away from the arc-shaped column (51), and electromagnetic valves (553) are evenly mounted around the camera probe (552), and the electromagnetic valves (553) are connected to the inside of the grinding head (55).

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