Automatic paint spraying device and paint spraying method

Abstract

The invention relates to an automatic paint spraying device and a paint spraying method. The automatic paint spraying device comprises a stand column tool and a paint spraying mechanism. The stand column tool is used for supporting the bottom of the stand column and keeping the stand column axially vertical. The paint spraying mechanism comprises a movable base, two arc-shaped plates and a spray head. The movable base can move on the working face. One ends of the two arc-shaped plates can be rotatably opened and closed to adapt to the stand columns with different diameters, and the two arc-shaped plates can be synchronously connected with the movable base in a lifting mode. Spray heads are arranged on the inner sides of the two arc-shaped plates and used for spraying cleaning fluid, high-pressure air and paint. The vertical column paint spraying device has the beneficial effects of being suitable for paint spraying operation of vertical columns with different diameters, high in paint spraying efficiency and high in paint spraying quality, reducing labor intensity and avoiding harming health of workers.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic columns, and in particular to an automatic painting device and a painting method. Background Art

[0002] In the manufacturing process of hydraulic columns, after the hydraulic columns are completed, spraying paint on their surface is a crucial process. This process can not only beautify the appearance, but more importantly, it can effectively prevent the hydraulic columns from being corroded during subsequent use, thereby extending their service life.

[0003] However, the current traditional painting method mainly uses a handheld spray gun to spray paint on the columns. This painting method has many disadvantages: first, the workers need to hold the spray gun for a long time, which will increase the labor intensity of the workers and reduce the work efficiency; second, it is difficult to accurately control the uniformity of the spray paint with a handheld spray gun, which affects the surface painting quality. The paint may be too thick or too thin in some parts, which not only affects the appearance, but also may reduce the protective effect; third, the workers are in an environment where the paint evaporates for a long time, which has an impact on the health of the workers.

[0004] Therefore, there is an urgent need for a painting device suitable for automatically painting hydraulic columns. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an automatic painting device and a painting method, which solve the technical problems of high labor intensity, low work efficiency, poor painting quality and impact on the health of workers when using traditional handheld spray guns to spray paint on hydraulic columns.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0009] In a first aspect, an embodiment of the present invention provides an automatic painting device, including a column tooling and a painting mechanism;

[0010] The column fixture is used to support the bottom of the column and keep it axially vertical;

[0011] The paint spraying mechanism comprises a movable base, two arc-shaped plates and a spray head;

[0012] The movable base can move on the work surface;

[0013] One end of the two arc-shaped plates can be rotated to open and close to adapt to the columns of different diameters, and the two arc-shaped plates can be connected to the movable base by synchronous lifting and lowering; the inner sides of the two arc-shaped plates are provided with the nozzles, and the nozzles are used to spray cleaning liquid, high-pressure air and paint.

[0014] According to the present invention, a cleaning liquid container, an air compressor and a paint container are provided in the movable base;

[0015] The cleaning liquid container, the air compressor and the paint container are all connected to the spray head through a delivery pipe.

[0016] According to the present invention, the spray head includes a cleaning liquid and high-pressure gas spray head and a paint spray head;

[0017] Two separated conveying chambers are provided in each arc-shaped plate to respectively connect the cleaning liquid and high-pressure gas nozzles and the coating nozzles;

[0018] One of the delivery chambers is connected to the cleaning liquid container and the air compressor, and the other delivery chamber is connected to the paint container.

[0019] According to the present invention, the nozzles on each of the arc-shaped plates include a plurality of the cleaning liquid and high-pressure gas nozzles and a plurality of the coating nozzles;

[0020] The plurality of cleaning liquid and high-pressure gas nozzles and the plurality of coating nozzles are distributed in a matrix along the arc length direction and the height direction of the arc plate, and the cleaning liquid and high-pressure gas nozzles are spaced apart from the coating nozzles.

[0021] According to the present invention, the column fixture comprises a support ring and an oil receiving ring;

[0022] The supporting ring is axially vertical and can be inserted into the bottom of the column to support the column;

[0023] The oil receiving ring is sleeved on the outer circumference of the support ring, and the support ring and the oil receiving ring enclose an oil receiving groove;

[0024] The cleaning liquid container is provided with a separated oil collection chamber and a cleaning liquid containing chamber; the oil collection chamber is connected to the oil receiving tank through an oil collection pipe, and the cleaning liquid containing chamber is connected to the nozzle through the delivery pipe.

[0025] According to the present invention, the column tooling further includes a support frame and a drive motor;

[0026] The support frame is located below the support ring, the outer periphery of the support frame is sleeved with and fixedly connected to the oil collecting ring, the support frame is fixedly connected to the main body of the drive motor, and the driving end of the drive motor is fixedly connected to the support ring to drive the support ring to drive the supported column to rotate around the vertical axis.

[0027] According to the present invention, a lifting plate capable of being raised and lowered is provided in the cleaning liquid container, and the lifting plate divides the cleaning liquid container into an oil collection chamber and a cleaning liquid containing chamber arranged vertically;

[0028] When the lifting plate descends, the cleaning liquid containing chamber can squeeze the cleaning liquid to the nozzle to spray the cleaning liquid, and the oil collection chamber can form a negative pressure chamber to collect the oil in the oil receiving tank.

[0029] According to the present invention, a vertical guide rail is arranged on the movable base, and the two arc-shaped plates are lifted and lowered along the vertical guide rail via a sliding block.

[0030] According to the present invention, an axially vertical driving gear is provided on the slider, the two arc plates are fixedly connected to the driven gear, the two driven gears are meshed, and the driving gear and one driven gear are meshed to adjust the opening and closing angles of the two arc plates.

[0031] In a second aspect, the present invention further provides a painting method, which is applied to the automatic painting device, comprising the following steps:

[0032] S1. Support the bottom of the column on the column fixture to make the axial direction of the column vertical;

[0033] S2, the movable base drives the paint spraying mechanism to move as a whole to the column to be painted, and adjusts the opening and closing angles of the two arc-shaped plates to fit and surround the peripheral wall of the column to be painted;

[0034] S3, the two arc-shaped plates are lifted and lowered by a set distance, and cleaning liquid, high-pressure air and paint are sprayed on the peripheral wall of the column in sections in sequence;

[0035] S4, the two arc-shaped plates and the column can be relatively rotated at a set angle along the circumference of the column, and step S3 is repeated until the peripheral walls of the column are all painted.

[0036] (III) Beneficial effects

[0037] The automatic painting device of the present invention can be applied to the painting operation of a small range or a large number of columns, and has the following beneficial effects:

[0038] Suitable for painting of columns with different diameters: the two curved plates can adjust the opening and closing angles to adapt to and surround columns with different diameters, and the columns can be painted through the nozzles on the curved plates.

[0039] High painting efficiency: When in use, multiple processed columns are hoisted one by one onto the column fixture to keep the columns in an axially vertical state, and then the paint spraying mechanism is used to automatically spray paint on the peripheral walls of multiple axially vertical columns in sequence, so as to realize continuous painting of multiple columns, saving the time of waiting for the paint to dry after the painting of one column is completed and the time of waiting for another column to be hoisted onto the column fixture, effectively improving the painting efficiency. At the same time, the nozzle integrates the functions of spraying cleaning liquid, high-pressure air and paint. After the arc plate and the peripheral wall of the column are aligned, the whole process of dissolving oil stains, degreasing, drying and painting can be completed, reducing the process switching time. In addition, spraying high-pressure gas on the peripheral wall of the column promotes the drying of the peripheral wall of the column, which can shorten the time of waiting for the peripheral wall of the column to dry before painting, and improve the painting efficiency.

[0040] High quality of painting: By controlling the single painting time of the nozzle, the uniformity of the paint thickness can be ensured. At the same time, the two arc plates can drive the nozzle to move up and down along the peripheral wall of the column by a set distance, and the two arc plates and the column rotate relative to each other at a set angle, which can ensure the uniformity of the painting range of the peripheral wall of the column and avoid local paint leakage. At the same time, the nozzle sprays cleaning liquid to the peripheral wall of the column in turn to dissolve the oil stains adhered to the peripheral wall of the column during the processing process, and sprays high-pressure air to remove the dissolved oil stains and blow dry the peripheral wall of the column, ensuring that there are no foreign objects on the peripheral wall of the column to be painted, which can improve the quality of painting on the peripheral wall of the column.

[0041] Reduce labor intensity and avoid harm to workers' health: The automatic spray painting device can spray paint, which avoids the need for workers to operate, thus reducing labor intensity and avoiding harm to workers' health. At the same time, the movable base can realize the free movement of the spray painting mechanism along the working surface, avoiding manual handling and significantly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a three-dimensional schematic diagram of the automatic painting device of the present invention;

[0043] Figure 2 for Figure 1 A perspective schematic diagram of the movable base is not shown;

[0044] Figure 3 It is a schematic diagram without showing the columns;

[0045] Figure 4 for Figure 3 A partial enlarged view of

[0046] Figure 5 is a three-dimensional schematic diagram of a movable base;

[0047] Figure 6 for Figure 5 sectional view of .

[0048] [Description of Reference Numerals]

[0049] 1: Column tooling; 11: Support ring; 12: Oil receiving ring; 13: Reinforcement rib;

[0050] 2: paint spraying mechanism; 21: movable base; 211: cleaning liquid container; 2111: lifting plate; 2112: electric push rod; 2113: second liquid inlet valve; 2114: liquid discharge valve; 2115: partition plate; 212: air compressor; 213: paint container; 214: self-locking universal wheel; 215: handle; 22: curved plate; 23: nozzle; 231: cleaning liquid and high-pressure gas nozzle; 232: paint nozzle; 24: delivery pipe; 241: cleaning liquid outlet pipe; 242: high-pressure air pipe; 243: paint outlet pipe; 25: cleaning liquid inlet joint; 26: oil collection pipe; 27: oil discharge pipe; 281: vertical guide rail; 282: slider; 291: driving gear; 292: driven gear;

[0051] 3: Column;

[0052] a: Oil receiving tank; b: Oil collecting chamber; c: Cleaning liquid containing chamber. DETAILED DESCRIPTION

[0053] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific embodiments. Figure 1 The orientation is used as a reference.

[0054] See also Figure 1-6 An automatic painting device proposed in an embodiment of the present invention includes a column tooling 1 and a painting mechanism 2.

[0055] See also Figure 1-3 The column fixture 1 is used to support the bottom of the column 3 and keep it axially vertical. The painting mechanism 2 is used to spray paint on the peripheral wall of the column 3 to be painted.

[0056] The paint spraying mechanism 2 comprises a movable base 21 , two arc-shaped plates 22 and a spray head 23 .

[0057] The movable base 21 can be moved on a working surface (e.g., the ground) for painting the column 3. One end of the two arc-shaped plates 22 can be rotated to open and close to adapt to columns 3 of different diameters, that is, the opening and closing angle between the two arc-shaped plates 22 can be adjusted to surround the peripheral wall of the column 3 of different diameters. The two arc-shaped plates 22 can be connected to the movable base 21 by synchronous lifting and lowering to paint at different heights of the peripheral wall of the column 3. A nozzle 23 is provided on the inner side of the two arc-shaped plates 22, and the nozzle 23 is used to spray cleaning liquid, high-pressure air and paint on the peripheral wall of the column 3 to be painted. Among them, the cleaning liquid is used to dissolve the oil stains remaining during the processing of the peripheral wall of the column 3, the high-pressure air is used to remove the oil stains after the peripheral wall of the column 3 is dissolved, and the paint is used to paint the peripheral wall of the column 3.

[0058] It should be noted that the cleaning liquid can be an organic solvent such as acetone, methanol, ethanol, isopropanol, etc., an alkaline cleaning liquid such as sodium hydroxide or potassium hydroxide solution, etc., a surfactant such as sodium dodecylbenzene sulfonate, etc., a special cleaning agent such as an aqueous cleaning agent and a semi-aqueous cleaning agent, or a biological cleaning agent such as a solvent containing microorganisms or enzymes, etc., which can remove oil stains. In addition, the nozzle 23 is arranged perpendicular to the peripheral wall of the column 3 to be painted to ensure uniformity of painting.

[0059] Furthermore, the painting method of the automatic painting device comprises the following steps:

[0060] S1. Support the bottom of the column 3 on the column tooling 1 to make the axial direction of the column 3 vertical.

[0061] S2. The movable base 21 drives the paint spraying mechanism 2 to move as a whole to the column 3 to be painted, and adjusts the opening and closing angles of the two arc-shaped plates 22 to fit and surround the peripheral wall of the column 3 to be painted.

[0062] S3, the two arc-shaped plates 22 are raised and lowered by a set distance, and cleaning liquid, high-pressure air and paint are sprayed on the peripheral walls of the columns 3 in sections in sequence.

[0063] S4, the two arc-shaped plates 22 and the column 3 can be relatively rotated at a set angle along the circumference of the column 3, and step S3 is repeated until the surrounding walls of the column 3 are all painted.

[0064] Specifically, step S3 also includes:

[0065] S31, the two arc-shaped plates 22 move up relative to the movable base 21 to the upper end wall of the column 3 to be painted, and the nozzle 23 sprays cleaning liquid, high-pressure air and paint to the wall of the column 3 to be painted in sequence, so as to dissolve the oil stains on the wall of the column 3 in sequence, remove the dissolved oil stains on the wall of the column 3 and blow dry the wall of the column 3, and spray paint on the wall of the column 3.

[0066] S32: After the two arc-shaped plates 22 move downward by a set distance, step S31 is repeated.

[0067] S33, repeat step S32 multiple times until the painting of the lower end peripheral wall of the column 3 to be painted is completed.

[0068] The automatic painting device of the present invention can be applied to the painting operation of the columns 3 in a small range or in large quantities, and has the following beneficial effects:

[0069] Suitable for painting operations on pillars 3 with different diameters: the two arc-shaped plates 22 can adjust the opening and closing angles to adapt to and surround pillars 3 with different diameters, and paint the pillars 3 through the nozzles 23 on the arc-shaped plates 22 .

[0070] High painting efficiency: when in use, multiple processed columns 3 are hoisted one by one onto the column fixture 1 to keep the column 3 in an axially vertical state, and then the paint spraying mechanism 2 is used to automatically spray paint on the peripheral walls of multiple axially vertical columns 3 in sequence, so as to realize continuous painting operation of multiple columns 3, saving the time of waiting for the paint to dry after the painting of one column 3 is completed and the time of waiting for another column 3 to be hoisted onto the column fixture 1, and effectively improving the painting efficiency. At the same time, the nozzle 23 integrates the functions of spraying cleaning liquid, high-pressure air and paint. After the arc plate 22 and the peripheral wall of the column 3 are aligned, the whole process of dissolving oil stains, removing oil stains, blowing and painting can be completed, reducing the process switching time. In addition, spraying high-pressure gas on the peripheral wall of the column 3 can promote the drying of the peripheral wall of the column 3, further shorten the time of waiting for the peripheral wall of the column 3 to dry before spraying paint, and improve the painting efficiency.

[0071] High quality of painting: By controlling the single painting time of the nozzle 23, the uniformity of the paint thickness can be ensured. At the same time, the two arc plates 22 can drive the nozzle 23 to move up and down along the peripheral wall of the column 3 by a set distance, and the two arc plates 22 and the column 3 rotate relative to each other at a set angle, which can ensure the uniformity of the peripheral wall of the column 3 in the axial and circumferential directions and avoid local paint leakage. At the same time, the nozzle 23 sequentially sprays cleaning liquid to the peripheral wall of the column 3 to dissolve the oil stains adhered to the peripheral wall of the column during the processing, and sprays high-pressure air to remove the dissolved oil stains and blow dry the peripheral wall of the column 3, ensuring that there are no foreign objects on the peripheral wall of the column 3 to be painted, which can improve the quality of painting the peripheral wall of the column 3.

[0072] Reduce labor intensity and avoid harm to workers' health: The automatic painting device performs the painting operation, avoiding the need for workers to operate, thus reducing labor intensity and avoiding harm to workers' health. At the same time, the movable base 21 can realize the free movement of the painting mechanism along the working surface, avoiding manual handling, and significantly improving the working efficiency.

[0073] Preferably, to realize the movement of the paint spraying mechanism 2:

[0074] A self-locking universal wheel 214 is provided at the bottom of the movable base 21 to move along the working surface, and when the movable base 21 moves to a set position, the self-locking universal wheel 214 can be locked to avoid displacement, so as to ensure the accuracy of the painting position.

[0075] Preferably, in order to further facilitate the movement of the paint spraying mechanism 2:

[0076] A handle 215 is provided on the movable base 21 to facilitate pushing the movable base 21 and moving the entire paint spraying mechanism 2 .

[0077] Specifically, the paint spraying mechanism 2 further comprises a support frame, a movable base 21 is fixed on the support frame, a self-locking universal wheel 214 is arranged at the bottom of the support frame, and a handle 215 is arranged at the top of the support frame.

[0078] Further, in order to realize the lifting and lowering of the two arc-shaped plates 22:

[0079] A vertical guide rail 281 is provided on the movable base 21, and the two arc plates 22 are lifted and lowered along the vertical guide rail 281 by means of a slider 282 to ensure the lifting accuracy of the two arc plates 22 and the consistency of the set lifting distance of the two arc plates 22 each time, thereby improving the painting accuracy.

[0080] Specifically, one end of the two arc-shaped plates 22 is hinged to the slider 282 for rotation around a vertical axis, so that one end of the two arc-shaped plates 22 can be rotated to open and close.

[0081] Optionally, the vertical guide rail 281 is a screw nut guide rail.

[0082] Further, in order to adjust the opening and closing angles of the two arc-shaped plates 22:

[0083] An axially vertical driving gear 291 is set on the slider 282, and the two arc plates 22 are fixedly connected to the driven gear 292. The two driven gears 292 are meshed, and the driving gear 291 and one driven gear 292 are meshed to adjust the opening and closing angles of the two arc plates 22, and can ensure the symmetry of the two arc plates 22, avoid blind areas in spraying caused by asymmetric opening and closing, and improve the quality of painting.

[0084] When the driving gear 291 rotates, the driving gear 291 can drive the two driven gears 292 to rotate in the opposite direction, and the two driven gears 292 can drive one end of the two arc plates 22 to rotate and open to adjust the opening and closing angles of the two arc plates 22. By changing the rotation direction of the driving gear 291, the opening and closing angles of the two arc plates 22 can be easily increased or decreased.

[0085] Specifically, a motor for driving the driving gear 291 to rotate around a vertical axis is also disposed on the slider 282 . The main body of the motor is fixed on the slider 282 , and the driving end of the motor is fixedly connected to the driving gear 291 .

[0086] Further, in order to realize the function of the nozzle 23 spraying cleaning liquid, high-pressure air and paint, the paint spraying mechanism 2 is set as follows:

[0087] See also Figure 2 The movable base 21 is provided with a cleaning liquid container 211, an air compressor 212 and a paint container 213. The cleaning liquid container 211, the air compressor 212 and the paint container 213 are all connected to the nozzle 23 through a delivery pipe 24 to supply the cleaning liquid, high-pressure gas and paint to the nozzle 23 respectively.

[0088] The cleaning liquid container 211, the air compressor 212 and the paint container 213 are centrally stored inside the movable base 21, which reduces the complexity of external piping, improves the equipment integration and mobility, and makes it easier for maintenance personnel to independently inspect or replace a single medium container, thereby reducing downtime.

[0089] Further, in order to ensure the quality of painting, the painting mechanism 2 is set as follows:

[0090] The spray head 23 includes a cleaning liquid and high-pressure gas spray head 231 and a paint spray head 232 .

[0091] Two separate delivery chambers are provided in each arc-shaped plate 22 to respectively connect the cleaning liquid and high-pressure gas nozzle 231 and the paint nozzle 232. One delivery chamber is connected to the cleaning liquid container 211 and the air compressor 212, and the other delivery chamber is connected to the paint container 213. The cleaning liquid container 211 and the air compressor 212 respectively deliver the cleaning liquid and high-pressure gas to the cleaning liquid and high-pressure gas nozzle 231 through one delivery chamber. The paint container 213 delivers paint to the paint nozzle 232 through the other delivery chamber.

[0092] The cleaning medium and the paint are physically isolated by two conveying chambers and two types of nozzles to avoid cross contamination of the pipelines and ensure the cleanliness of the surface of the pillar 3 before painting.

[0093] A delivery cavity of the two arc-shaped plates 22 is connected to the cleaning liquid container 211 through a cleaning liquid outlet pipe 241. The cleaning liquid container 211 delivers cleaning liquid to the cleaning liquid and high-pressure gas nozzle 231 through a delivery cavity through the cleaning liquid outlet pipe 241.

[0094] A delivery cavity of the two arc-shaped plates 22 is connected to the air compressor 212 through a high-pressure air pipe 242. The air compressor 212 delivers high-pressure gas to the cleaning liquid and the high-pressure gas nozzle 231 through the high-pressure air pipe 242 via a delivery cavity.

[0095] The other conveying cavity of the two arc-shaped plates 22 is connected to the paint container 213 through the paint outlet pipe 243 , and the paint container 213 conveys the paint to the paint nozzle 232 through the other conveying cavity through the paint outlet pipe 243 .

[0096] Thus, the cleaning liquid and high-pressure gas nozzle 231 and the paint nozzle 232 spray the cleaning liquid and paint independently, which effectively improves the cleaning and painting quality.

[0097] More specifically, to facilitate the connection of pipelines: one end of the cleaning liquid outlet pipe 241, the high-pressure air pipe 242 and the paint outlet pipe 243 are connected to the two arc plates 22 through quick connectors, and the other ends are connected to the cleaning liquid container 211, the air compressor 212 and the paint container 213 through quick connectors respectively.

[0098] See also Figure 4 Preferably, in order to further improve the painting efficiency, the spray head 23 is set as follows:

[0099] The nozzles 23 on each arc-shaped plate 22 include a plurality of cleaning liquid and high-pressure gas nozzles 231 and a plurality of coating material nozzles 232 .

[0100] Multiple cleaning liquid and high-pressure gas nozzles 231 and multiple paint nozzles 232 are distributed in a matrix along the arc length direction and height direction of the curved plate 22. The cleaning liquid and high-pressure gas nozzles 231 and the paint nozzles 232 are arranged at intervals to expand the coverage range of the nozzles 23 on the two curved plates 22 when spraying the columns 3, thereby improving the painting efficiency.

[0101] Preferably, in order to facilitate cleaning of the spray head 23, the spray head 23 can be detachably connected to the arc plate 22, so as to facilitate regular cleaning and improve the quality of spray painting. Among them, the spray head 23 can be connected to the arc plate 22 by a detachable connection method such as a threaded connection.

[0102] Preferably, in order to meet different painting requirements, the nozzle 23 is set as an adjustable nozzle capable of switching between a mist spray mode and a liquid spray mode. A control switch for adjusting the spray mode of the nozzle 23 is set on the outer peripheral wall of the movable base 21, and the nozzle 23 is controlled by the control switch to switch between the mist spray mode and the liquid spray mode. It should be noted that the way in which the nozzle 23 switches between different spray modes by the control switch is a conventional setting of the nozzle.

[0103] See also Figure 2 Further, in order to facilitate the replenishment of paint into the paint container 213, the paint container 213 is configured as follows:

[0104] A paint liquid inlet joint is arranged on the outer peripheral wall of the paint container 213 , and the paint liquid inlet joint passes through the outer periphery of the movable base 21 . After the paint inlet pipe is connected to the paint liquid inlet joint, the paint can be added to the paint container 213 .

[0105] Specifically, a first liquid inlet valve is provided on the paint liquid inlet joint to control the opening and closing of the paint liquid inlet joint.

[0106] Preferably, in order to observe the paint level in the paint container 213, a level meter for detecting the paint level is provided in the paint container 213, and a display screen is provided on the outer peripheral wall of the movable base 21. The level meter is electrically connected to the display screen, and the display screen displays the paint level height for timely replenishment.

[0107] The liquid level meter may be a float level meter or other liquid level meter.

[0108] See also Figure 1-3 , further, the specific structure of the column tooling 1 is:

[0109] The column fixture 1 comprises a support ring 11 , the axial direction of which is vertical, and the bottom of the column 3 can be inserted therein, so as to keep the column 3 to be painted in a vertical state.

[0110] The outer periphery of the support ring 11 radially extends outward to form an oil receiving ring 12. The support ring 11 and the oil receiving ring 12 enclose an oil receiving groove a to collect dissolved oil from the peripheral wall of the column 3 to avoid polluting the working environment.

[0111] Preferably, in order to improve the supporting strength of the column fixture 1 for the column 3 , a plurality of reinforcing ribs 13 are provided at intervals along the circumferential direction of the outer periphery of the oil receiving ring 12 .

[0112] Furthermore, the column tooling 1 also includes a support frame and a drive motor.

[0113] The support frame is located below the support ring 11, and an oil ring 12 is sleeved on the outer periphery of the support frame and fixedly connected. The main body of the drive motor is fixedly connected to the support frame, and the driving end of the drive motor is fixedly connected to the support ring 11. The drive motor is used to drive the support ring 11 to rotate around the vertical axis. The support ring 11 can drive the supported column 3 to rotate around the vertical axis, so that the column 3 can rotate to a set angle relative to the two arc plates 22.

[0114] Therefore, in S4 of the painting step, the two curved plates 22 and the column 3 can be relatively rotated at a set angle along the circumference of the column 3, and the two curved plates 22 correspond to different positions of the column 3 in the circumference to ensure uniformity when painting the circumferential wall of the column 3.

[0115] See also Figure 5 and 6 , preferably, in order to better collect and clean up the dissolved oil:

[0116] The cleaning liquid container 211 is provided with a separate oil collecting chamber b and a cleaning liquid containing chamber c. The oil collecting chamber b is connected to the oil receiving tank a through an oil collecting pipe 26, and the cleaning liquid containing chamber c is connected to the nozzle 23 through a delivery pipe 24.

[0117] The cleaning liquid container 211 integrates the function of containing oil stains and cleaning liquid, and compared with setting up two containers separately, the overall volume is effectively reduced, so as to reduce the overall volume of the movable base 21 for easy movement.

[0118] Furthermore, a lifting plate 2111 capable of being raised and lowered is provided in the cleaning liquid container 211 , and the lifting plate 2111 divides the cleaning liquid container 211 into an oil collection chamber b and a cleaning liquid containing chamber c arranged vertically.

[0119] When the lifting plate 2111 descends, the cleaning liquid containing chamber c can squeeze the cleaning liquid to the nozzle 23 through the delivery pipe 24 to spray the cleaning liquid, and the oil collection chamber b can form a negative pressure chamber and collect the oil in the oil receiving tank a through the oil collection pipe 26.

[0120] Therefore, by driving the lifting plate 2111 to descend, pressurized injection of cleaning liquid and negative pressure suction of oil stains are achieved, simplifying the complexity of the control system, and eliminating the need to set up a large pump, further reducing the overall volume of the movable base 21 and reducing energy consumption.

[0121] Specifically, in order to drive the lifting plate 2111 to move up and down, a main body of an electric push rod 2112 is disposed on the cleaning liquid container 211 , and a push rod of the electric push rod 2112 is connected to the lifting plate 2111 to drive the lifting plate 2111 to move up and down.

[0122] Specifically, in order to conveniently control the inflow and outflow of the oil collection chamber b, the following settings are also included:

[0123] A partition plate 2115 is also provided in the cleaning liquid container 211, and is located above the lifting plate 2111. The outer periphery of the partition plate 2115 is fixed to the inner wall of the cleaning liquid container 211. The partition plate 2115, the lifting plate 2111, and the inner wall of the cleaning liquid container 211 form an oil collection chamber b. The partition plate 2115 is provided with a liquid inlet joint for connecting to the oil collection pipe 26 and a liquid discharge joint for connecting to the oil discharge pipe 27. A second liquid inlet valve 2113 is provided on the liquid inlet joint, and a liquid discharge valve 2114 is provided on the liquid discharge joint.

[0124] In the initial state, the second inlet valve 2113 and the drain valve 2114 are both in a closed state. When it is necessary to collect oil, the lifting plate 2111 descends relative to the cleaning liquid container 211, the second inlet valve 2113 opens, and the oil collection pipe 26 can transport the oil in the oil receiving tank a to the oil collection chamber b. When it is necessary to discharge the oil, the drain valve 2114 opens, and the oil discharge pipe 27 can discharge the oil in the oil collection chamber b out of the movable base 21. In this way, the inlet and outlet of the oil collection chamber b can be conveniently realized.

[0125] More specifically, to facilitate the connection of pipelines: both ends of the oil collecting pipe 26 are connected to the oil receiving groove a of the oil receiving ring 12 and the oil collecting chamber b of the cleaning liquid container 211 through quick connectors.

[0126] Preferably, in order to improve the sealing performance of the cleaning liquid container 211:

[0127] Sealing rings are provided between the outer periphery of the partition plate 2115 and the inner wall of the cleaning liquid container 211, between the outer periphery of the push rod and the cleaning liquid container 211, and between the outer periphery of the push rod and the partition plate 2115 to prevent liquid leakage.

[0128] Further, to achieve the liquid inflow into the cleaning liquid receiving chamber c:

[0129] A cleaning liquid inlet connector 25 communicating with the cleaning liquid containing chamber c is disposed on the outer periphery of the cleaning liquid container 211 . The cleaning liquid containing chamber c can be replenished with cleaning liquid by connecting the cleaning liquid inlet pipe to the cleaning liquid inlet connector 25 .

[0130] Specifically, a third liquid inlet valve is provided on the cleaning liquid inlet joint 25 to control the opening and closing of the cleaning liquid inlet joint 25 .

[0131] Preferably, in order to observe the level of the cleaning liquid in the cleaning liquid receiving chamber c, a level gauge for detecting the level of the cleaning liquid is provided in the cleaning liquid receiving chamber c, and the level gauge is electrically connected to a display screen located on the outer peripheral wall of the movable base 21, and the height of the cleaning liquid level is displayed on the display screen for timely replenishment. The level gauge may be a float level gauge or other level gauge.

[0132] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0133] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0134] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0135] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An automatic painting device, characterized in that: It comprises a column tooling (1) and a paint spraying mechanism (2); The column fixture (1) is used to support the bottom of the column (3) and keep it axially vertical; The paint spraying mechanism (2) comprises a movable base (21), two arc-shaped plates (22) and a spray head (23); The movable base (21) is movable on the working surface; One end of the two arc-shaped plates (22) can be rotated to open and close to adapt to the columns (3) of different diameters, and the two arc-shaped plates (22) can be connected to the movable base (21) in a synchronously raised and lowered manner; the nozzles (23) are arranged on the inner sides of the two arc-shaped plates (22), and the nozzles (23) are used to spray cleaning liquid, high-pressure air and paint.

2. The automatic painting device according to claim 1, characterized in that: The movable base (21) is provided with a cleaning liquid container (211), an air compressor (212) and a paint container (213); The cleaning liquid container (211), the air compressor (212) and the paint container (213) are all connected to the spray head (23) via a delivery pipe (24).

3. The automatic painting device according to claim 2, characterized in that: The spray head (23) includes a cleaning liquid and high-pressure gas spray head (231) and a paint spray head (232); Two separated conveying chambers are provided in each arc-shaped plate (22) to respectively connect the cleaning liquid and high-pressure gas nozzle (231) and the coating nozzle (232); One of the delivery chambers is connected to the cleaning liquid container (211) and the air compressor (212), and the other of the delivery chambers is connected to the paint container (213).

4. The automatic painting device according to claim 3, characterized in that: The nozzles (23) on each of the arc-shaped plates (22) include a plurality of cleaning liquid and high-pressure gas nozzles (231) and a plurality of coating material nozzles (232); The plurality of cleaning liquid and high-pressure gas nozzles (231) and the plurality of coating nozzles (232) are distributed in a matrix along the arc length direction and the height direction of the arc plate (22), and the cleaning liquid and high-pressure gas nozzles (231) and the coating nozzles (232) are arranged at intervals.

5. The automatic painting device according to claim 2, characterized in that: The column fixture (1) comprises a support ring (11) and an oil receiving ring (12); The supporting ring (11) is axially vertical and can be inserted into the bottom of the column (3) to support the column (3); The oil receiving ring (12) is sleeved on the outer circumference of the support ring (11), and the support ring (11) and the oil receiving ring (12) enclose an oil receiving groove (a); The cleaning liquid container (211) is provided with a separated oil collection chamber (b) and a cleaning liquid containing chamber (c); the oil collection chamber (b) is connected to the oil receiving tank (a) through an oil collection pipe (26), and the cleaning liquid containing chamber (c) is connected to the nozzle (23) through the delivery pipe (24).

6. The automatic painting device according to claim 5, characterized in that: The column tooling (1) also includes a support frame and a drive motor; The support frame is located below the support ring (11), the outer periphery of the support frame is sleeved with and fixedly connected to the oil receiving ring (12), the support frame is fixedly connected to the main body of the drive motor, and the drive end of the drive motor is fixedly connected to the support ring (11) to drive the support ring (11) to drive the supported column (3) to rotate around the vertical axis.

7. The automatic painting device according to claim 5, characterized in that: A lifting plate (2111) capable of being raised and lowered is arranged in the cleaning liquid container (211), and the lifting plate (2111) divides the cleaning liquid container (211) into an oil collection chamber (b) and a cleaning liquid containing chamber (c) arranged in an upper and lower manner; When the lifting plate (2111) descends, the cleaning liquid containing chamber (c) can squeeze the cleaning liquid to the nozzle (23) to spray the cleaning liquid, and the oil collection chamber (b) can form a negative pressure chamber to collect the oil in the oil receiving tank (a).

8. The automatic painting device according to claim 1, characterized in that: A vertical guide rail (281) is arranged on the movable base (21), and the two arc-shaped plates (22) are lifted and lowered along the vertical guide rail (281) via a slider (282).

9. The automatic painting device according to claim 8, characterized in that: An axially vertical driving gear (291) is provided on the slider (282), the two arc-shaped plates (22) are fixedly connected to the driven gear (292), the two driven gears (292) are meshed, and the driving gear (291) and one driven gear (292) are meshed to adjust the opening and closing angles of the two arc-shaped plates (22).

10. A painting method, applied to the automatic painting device according to any one of claims 1 to 9, characterized in that: The steps include: S1. Supporting the bottom of the column (3) on the column tooling (1) so that the axial direction of the column (3) is vertical; S2, the movable base (21) drives the paint spraying mechanism (2) to move as a whole to the column (3) to be painted, and adjusts the opening and closing angles of the two arc-shaped plates (22) to fit and surround the peripheral wall of the column (3) to be painted; S3, the two arc-shaped plates (22) are raised and lowered by a set distance, and cleaning liquid, high-pressure air and paint are sprayed on the peripheral wall of the column (3) in sections in sequence; S4, the two arc-shaped plates (22) and the column (3) can be relatively rotated at a set angle along the circumference of the column (3), and step S3 is repeated until the peripheral wall of the column (3) is completely sprayed with paint.

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