Pipe workpiece spraying production line

Abstract

The pipe workpiece spraying production line comprises a production rack, a conveying part, a sand blasting treatment part, a spraying treatment part and a stroke monitoring part, the conveying part comprises a chain-shaped track, the chain-shaped track is installed on the production rack, a plurality of installation bases are arranged on the chain-shaped track, and the sand blasting treatment part is installed on the installation bases; the mounting base is provided with a circular clamping groove, and a pipe workpiece is suitable for being clamped in the circular clamping groove so as to be fixed to the mounting base. The sand blasting treatment component comprises a sand blasting bin, a first sand blasting gun and a second sand blasting gun, the sand blasting bin is installed on the production rack, the sand blasting bin is provided with a sand blasting cavity, a first inlet and a first outlet, the sand blasting cavity is communicated with the first inlet and the first outlet, and the second inlet is communicated with the second outlet. Automatic sand blasting, spraying and follow-up treatment can be conducted on the inner surface and the outer surface of a pipe workpiece, contact damage to the surface of the pipe is avoided through the chain type track and the mounting base, and the coating uniformity and the production efficiency are improved.

Description

Technical Field

[0001] The present invention relates to a spraying production line for pipe workpieces, belonging to the technical field of pipe processing technology. Background Art

[0002] In the process of pipe manufacturing, in order to improve its aesthetics or anti-corrosion performance, it is necessary to spray coloring paint or anti-corrosion paint on its surface. At present, the spraying operations commonly used in the market are often carried out by manually holding a spray gun. Manual spraying has low efficiency, and the uniformity of paint spraying is not good. Cleaning and spraying need to be completed at different workstations. Multiple clamping of the pipe leads to low efficiency and is prone to affecting the processing uniformity due to positioning deviation. After retrieval, it is found that a Chinese patent with the publication number CN112024162B discloses an all-round spraying device for plastic pipe processing. In this patent, during operation, the pipe body is first placed on the idler roller, and the second spring pushes the side support plates to drive the rotating rollers to clamp the pipe; the motor is started to drive the reciprocating lead screw to rotate, and the reciprocating thread sleeve drives the sliding plate to reciprocate along the sliding rod, so that the friction plate at the bottom of the driving plate is in frictional contact with the surface of the pipe; at this time, the first spring maintains the frictional pressure through the telescopic rod, and the pipe rotates synchronously with the idler roller under the action of friction; the pump body is started synchronously to spray the paint in the paint tank through the spray pipe from the annularly distributed nozzles, and 360° continuous spraying is realized during the rotation of the pipe. However, this patent cannot process the inside of the pipe, and the surface of the pipe is always in contact with the idler roller during the spraying process, resulting in the sprayed surface being scratched by the idler roller, and it is easy to cause uneven coating thickness during subsequent secondary spraying. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a spraying production line for pipe workpieces, which can automatically sandblast, spray and perform subsequent processing on the inner and outer surfaces of the pipe workpieces, avoid contact damage to the surface of the pipe through the chain-type track and the mounting base, and improve the coating uniformity and production efficiency.

[0004] To solve the above technical problem, the technical solution of the present invention is: a spraying production line for pipe workpieces, comprising: A production frame; A conveying component, the conveying component includes a chain-type track, the chain-type track is installed on the production frame, a plurality of mounting bases are provided on the chain-type track, and the mounting bases are provided with circular clamping grooves, and the pipe workpiece is adapted to be clamped in the circular clamping grooves to be fixed on the mounting bases; Sandblasting treatment component, the sandblasting treatment component includes a sandblasting chamber, a first sandblasting gun and a second sandblasting gun. The sandblasting chamber is installed on the production frame. The sandblasting chamber is provided with a sandblasting cavity, a first inlet and a first outlet. The sandblasting cavity is respectively communicated with the first inlet and the first outlet. The first sandblasting gun is slidably fitted on the side wall of the sandblasting chamber. The first sandblasting gun is adapted to move up and down to perform sandblasting treatment on the outer surface of the pipe workpiece entering the sandblasting cavity. The second sandblasting gun is installed on the top of the sandblasting chamber. The second sandblasting gun is adapted to move up and down to perform sandblasting treatment on the inner surface of the pipe workpiece entering the sandblasting cavity; Spraying treatment component, the spraying treatment component includes a first spraying assembly and a second spraying assembly. The first spraying assembly includes a spraying chamber and at least one first spraying nozzle. The spraying chamber is provided with a spraying cavity, a second inlet and a second outlet. The spraying cavity is respectively communicated with the second inlet and the second outlet. The first spraying is installed on the side wall of the spraying chamber. The first spraying nozzle is adapted to uniformly spray the outer surface of the pipe workpiece entering the spraying cavity; The second spraying assembly is arranged outside the spraying chamber. The second spraying assembly includes a spraying bracket and a second spraying nozzle. The spraying bracket is installed on the production frame. The second spraying nozzle is installed on the spraying bracket. The second spraying nozzle is adapted to move up and down to perform spraying treatment on the inner surface of the pipe workpiece; Stroke monitoring component, the stroke monitoring component includes a first stroke monitoring sensor, a second stroke monitoring sensor and a logic controller. The first stroke monitoring sensor is installed at the first inlet of the sandblasting chamber. The first stroke monitoring sensor is adapted to detect the in-place signal of the pipe workpiece entering the sandblasting cavity; The second stroke monitoring sensor is installed at the second inlet of the spraying chamber. The second stroke monitoring sensor is adapted to detect the in-place signal of the pipe workpiece entering the spraying cavity. The stroke monitoring component is adapted to control the start and stop of the chain track and the operation timing of the sandblasting treatment component and the spraying treatment component.

[0005] Furthermore, in order to ensure the stable operation of the pipe workpiece during transportation, the conveying component further includes a plurality of track brackets. The track brackets are provided with moving grooves. The track brackets are installed on the production bracket. The chain track moves in the moving grooves.

[0006] Further, in order to control the moving speed and position of the chain - type track, the conveying component further includes a plurality of conveying drive assemblies. Each conveying drive assembly includes a conveying drive motor and a conveying drive gear. The conveying drive motor is installed below the production frame. The conveying drive gear is connected to the movable end of the conveying drive motor. The conveying drive gear meshes with the chain - type track. The conveying drive motor is adapted to drive the conveying drive gear to rotate so as to drive the chain - type track to move in the moving groove.

[0007] Further, in order to clean the pipe workpiece before spraying, remove the dust and other impurities generated during the sand - blasting process, and improve the spraying quality. A pipe workpiece spraying production line further includes a cleaning component. The cleaning component includes a cleaning chamber, a cleaning water gun and a fan. The cleaning chamber is installed on the production frame and is arranged between the sand - blasting component and the first spraying component. The cleaning chamber is provided with a cleaning cavity, a third inlet and a third outlet. The cleaning cavity is respectively communicated with the third inlet and the third outlet. The cleaning water gun is installed on the top of the cleaning chamber. The cleaning water gun is adapted to wash the pipe workpiece that has been sand - blasted and enters the cleaning cavity. The fan is installed on the top of the cleaning chamber. The fan is adapted to blow air to the pipe workpiece.

[0008] Further, a diversion groove is provided at the bottom of the cleaning chamber, and a water collecting tank is provided below the production frame. The diversion groove is communicated with the water collecting tank. A pressurized water pump is also installed on the production frame. The inlet of the pressurized water pump is communicated with the water collecting tank through a first connecting pipeline. The outlet of the pressurized water pump is communicated with the cleaning water gun through a second connecting pipeline. A filter screen is provided in the second connecting pipeline.

[0009] Further, in order to accelerate the curing process of the coating after spraying treatment and improve production efficiency, a pipe workpiece spraying production line further includes a drying component. The drying component includes a drying chamber, an infrared heater and a circulation fan. The drying chamber is installed on the production frame and is arranged downstream of the second spraying component. The drying chamber is provided with a fourth inlet, a fourth outlet and a drying cavity. The drying cavity is respectively communicated with the fourth inlet and the fourth outlet. The infrared heaters are arranged in an array on the top of the drying cavity. The circulation fan is installed on the side wall of the drying chamber and is provided with an air supply channel. An adjustable air outlet is provided at the outlet of the air supply channel. The adjustable air outlet forms an angle of 30 - 45 degrees with the axial direction of the pipe workpiece.

[0010] Further, the first sand - blasting gun is slidably fitted on the side wall of the sand - blasting chamber through at least one first guide - rail slider pair; wherein, The first guide rail slider pair includes: A first guide rail installed on the side wall of the sandblasting chamber; A first slider installed on the first sandblasting gun; The sandblasting processing component further includes a first sandblasting driving member, a second sandblasting driving member, and a sandblasting support. The sandblasting support is installed on the sandblasting chamber. The first sandblasting driving member and the second sandblasting driving member are respectively installed on the sandblasting support. The movable end of the first sandblasting driving member is connected to the first sandblasting gun, and the movable end of the second sandblasting driving member is connected to the second sandblasting gun.

[0011] Furthermore, the first spraying nozzle is slidably fitted on the side wall of the spraying chamber through at least one second guide rail slider pair; wherein, The second guide rail slider pair includes: A second guide rail installed on the side wall of the spraying chamber; A second slider installed on the first spraying nozzle; The spraying processing component further includes a first spraying pump and a second spraying driving member. The first spraying pump is installed below the production frame. The second spraying driving member is installed on the spraying support. The outlet of the first spraying pump is connected to the first spraying nozzle, and the movable end of the second spraying driving member is connected to the second spraying nozzle; It further includes a first controller, and the first controller controls the operation timings of the conveying driving motor, the first sandblasting driving member, the second sandblasting driving member, the first spraying pump, and the second spraying driving member.

[0012] Furthermore, in order to ensure the fluidity of the paint, the second spraying assembly further includes a paint stirring chamber. The paint stirring chamber is installed beside the production frame. A stirring mechanism is provided in the paint stirring chamber. The stirring mechanism includes a stirring support, a stirring motor, a stirring shaft, and stirring blades. The stirring support is installed on the paint stirring chamber. The stirring motor is installed on the stirring support. The stirring shaft is connected to the stirring motor, and the stirring blades are installed on the stirring shaft. The stirring motor is adapted to drive the stirring shaft to drive the stirring blades to rotate; A suction pump is further installed on the paint stirring chamber. The inlet of the suction pump extends into the paint stirring chamber through a third connecting pipeline, and the outlet of the suction pump is communicated with the second spraying nozzle through a fourth connecting pipeline.

[0013] Furthermore, in order to realize the intelligent control of the production line and reduce manual operation errors, a pipe workpiece spraying production line further includes a logic controller, and the logic controller is electrically connected to the first stroke monitoring sensor, the second stroke monitoring sensor, and the first controller respectively; When the first stroke monitoring sensor detects that the pipe workpiece has completely entered the sandblasting chamber, the logic controller controls the chain-type track to pause running through the first controller and activates the reciprocating movement of the first sandblasting gun and the second sandblasting gun. After the preset sandblasting cycle ends, the chain-type track is restarted for conveying; When the second stroke monitoring sensor detects that the pipe workpiece has completely entered the spraying chamber, the logic controller controls the chain-type track to pause running through the first controller and activates the lifting and spraying operation of the first spraying nozzle. After the outer surface spraying is completed, the second spraying component is started to spray the inner surface of the pipe workpiece. After the preset spraying cycle ends, the chain-type track is restarted for conveying.

[0014] After adopting the above technical solutions, the present invention has the following beneficial effects: In the present invention, the pipe workpiece is clamped into the circular card slot of the installation base, and the conveying drive motor drives the chain-type track to move step by step, and the pipes are sequentially sent into each processing station; When the pipe workpiece passes through the first stroke monitoring sensor, after the first stroke monitoring sensor detects it, it sends a signal to the logic controller. After a certain time, the logic controller controls the conveying drive motor to pause. At this time, the pipe workpiece is in the sandblasting chamber. Subsequently, the first sandblasting drive member drives the first sandblasting gun to move up and down along the first guide rail to sandblast the outer surface of the pipe workpiece. The second sandblasting drive member drives the second sandblasting gun to synchronously extend into the inner cavity of the pipe workpiece, so that the second sandblasting gun moves up and down to process the inner wall. After a preset time, the chain-type track restarts, and the pipe workpiece continues to move into the cleaning chamber. During the movement of the pipe workpiece, the pressurized water pump extracts the filtered water in the water collection tank and flushes the residual sand grains and impurities on the inner and outer walls of the pipe through the cleaning water gun. Subsequently, it moves to the fan in the cleaning chamber, and the fan blows the surface of the pipe workpiece to dry the water on its surface; The pipe workpiece after cleaning treatment moves through the second stroke monitoring sensor through the chain-type track. After the second stroke monitoring sensor detects it, it sends a signal to the logic controller. After a certain time, the logic controller controls the conveying drive motor to pause. At this time, the pipe workpiece is in the spraying chamber in the spraying warehouse. Subsequently, the first spraying pump drives the first spraying nozzle to move up and down along the second guide rail to spray the coating on the outer surface of the pipe workpiece. After completion, the chain-type track restarts, and the pipe moves to the second spraying component station. The second spraying drive member drives the second spraying nozzle to extend into the inner cavity of the pipe workpiece, and the suction pump extracts the coating mixed by the stirring blades from the coating mixing bin and sprays the inner wall of the pipe workpiece through the rotating nozzle; Finally, the pipe workpiece enters the drying chamber, the infrared heater is heated to the set temperature, and the circulating fan blows hot air at an inclined angle to accelerate the curing of the coating. Finally, the pipe workpiece completed by the operator is unloaded from the installation base, and then the untreated pipe workpiece is installed on the already vacant installation base and returns to the starting position along the chain-type track to enter the next cycle. Description of the Drawings

[0015] Figure 1 is a three - dimensional view of a spraying production line for pipe workpieces of the present invention Figure 1 ; Figure 2 is a three - dimensional view of a spraying production line for pipe workpieces of the present invention Figure 2 ; Figure 3 is a front view of a spraying production line for pipe workpieces of the present invention; Figure 4 is a left view of a spraying production line for pipe workpieces of the present invention; Figure 5 is a top view of a spraying production line for pipe workpieces of the present invention; Figure 6 is a structural schematic diagram of a sand - blasting treatment component of the present invention; Figure 7 is a structural schematic diagram of a first spraying component of the present invention; Figure 8 is a structural schematic diagram of a cleaning treatment component of the present invention; Figure 9 is a structural schematic diagram of a drying treatment component of the present invention. Detailed implementation manners

[0016] In order to make the content of the present invention be more clearly understood, the present invention will be further described in detail below according to specific embodiments and in conjunction with the accompanying drawings.

[0017] As Figures 1-9 shown, a spraying production line for pipe workpieces includes: a production frame 1; a conveying component. The conveying component includes a chain - type track 21. The chain - type track 21 is installed on the production frame 1. A plurality of mounting bases 22 are provided on the chain - type track 21. The mounting bases 22 are provided with circular clamping grooves. The pipe workpieces are adapted to be clamped in the circular clamping grooves to be fixed on the mounting bases 22; a sand - blasting treatment component. The sand - blasting treatment component includes a sand - blasting chamber 31, a first sand - blasting gun 32 and a second sand - blasting gun 33. The sand - blasting chamber 31 is installed on the production frame 1. The sand - blasting chamber 31 is provided with a sand - blasting cavity 311, a first inlet 312 and a first outlet 313. The sand - blasting cavity 311 is respectively communicated with the first inlet 312 and the first outlet 313. The first sand - blasting gun 32 is slidably fitted on the side wall of the sand - blasting chamber 31. The first sand - blasting gun 32 is adapted to move up and down to perform sand - blasting treatment on the outer surface of the pipe workpieces entering the sand - blasting cavity 311. The second sand - blasting gun 33 is installed on the top of the sand - blasting chamber 31. The second sand - blasting gun 33 is adapted to move up and down to perform sand - blasting treatment on the inner surface of the pipe workpieces entering the sand - blasting cavity 311; Spraying treatment component, the spraying treatment component includes a first spraying assembly and a second spraying assembly. The first spraying assembly includes a spraying chamber 41 and at least one first spraying nozzle 42. The spraying chamber 41 is provided with a spraying cavity 411, a second inlet 412 and a second outlet 413. The spraying cavity 411 is respectively communicated with the second inlet 412 and the second outlet 413. The first spraying nozzle 42 is installed on the side wall of the spraying chamber 41, and the first spraying nozzle 42 is adapted to uniformly spray the outer surface of the pipe workpiece entering the spraying cavity 411; The second spraying assembly is arranged outside the spraying chamber 41. The second spraying assembly includes a spraying bracket 43 and a second spraying nozzle 44. The spraying bracket 43 is installed on the production frame 1, and the second spraying nozzle 44 is installed on the spraying bracket 43. The second spraying nozzle 44 is adapted to move up and down to spray the inner surface of the pipe workpiece; Stroke monitoring component, the stroke monitoring component includes a first stroke monitoring sensor 51, a second stroke monitoring sensor 52 and a logic controller. The first stroke monitoring sensor 51 is installed at the first inlet 312 of the sandblasting chamber 31, and the first stroke monitoring sensor 51 is adapted to detect the in-place signal of the pipe workpiece entering the sandblasting cavity 311; The second stroke monitoring sensor 52 is installed at the second inlet 412 of the spraying chamber 41, and the second stroke monitoring sensor 52 is adapted to detect the in-place signal of the pipe workpiece entering the spraying cavity 411. The stroke monitoring component is adapted to control the start and stop of the chain track 21 and the operation sequence of the sandblasting treatment component and the spraying treatment component.

[0018] In this embodiment, the first stroke monitoring sensor 51 and the second stroke monitoring sensor 52 adopt photoelectric proximity switches, and their sensing ends are arranged towards the axis direction of the circular card slot 221 of the mounting base 22.

[0019] Specifically, as Figure 3 shown, the conveying component further includes a plurality of track brackets 23. The track brackets 23 are provided with moving grooves. The track brackets 23 are installed on the production bracket, and the chain track 21 moves in the moving grooves.

[0020] In this embodiment, the setting of the track brackets 23 can make the transmission of the chain track 21 smoother and more stable.

[0021] Specifically, as Figure 3 、 Figure 5 shown, the conveying component further includes four conveying drive assemblies. The conveying drive assembly includes a conveying drive motor 24 and a conveying drive gear 25. The conveying drive motor 24 is installed below the production frame 1, the conveying drive gear 25 is connected to the movable end of the conveying drive motor 24, the conveying drive gear 25 is meshed with the chain track 21, and the conveying drive motor 24 is adapted to drive the conveying drive gear 25 to rotate to drive the chain track 21 to move in the moving groove.

[0022] In this embodiment, equidistant meshing grooves adapted to the teeth of the conveying drive gear 25 are provided on the chain - type track 21. The chain - type track 21 and the conveying drive gear 25 form a meshing drive, and the synchronous drive of the entire chain - type track 21 is realized through four conveying drive assemblies, ensuring the displacement of each mounting base 22 between the sand - blasting chamber 31 and the spraying chamber 41, and providing a stable conveying basis for multi - station collaborative operations.

[0023] Specifically, as Figures 1-2 、 Figure 8 shown, a pipe workpiece spraying production line further includes a cleaning treatment component. The cleaning treatment component includes a cleaning chamber 61, a cleaning water gun 62, and a fan 63. The cleaning chamber 61 is installed on the production frame 1 and is arranged between the sand - blasting treatment component and the first spraying component. The cleaning chamber 61 is provided with a cleaning cavity 611, a third inlet 612, and a third outlet 613. The cleaning cavity 611 is respectively communicated with the third inlet 612 and the third outlet 613. The cleaning water gun 62 is installed on the top of the cleaning chamber 61, and the cleaning water gun 62 is adapted to wash the sand - blasted pipe workpiece entering the cleaning cavity 611. The fan 63 is installed on the top of the cleaning chamber 61, and the fan 63 is adapted to blow air to the pipe workpiece.

[0024] Specifically, as Figures 1-2 shown, a diversion groove is provided at the bottom of the cleaning chamber 61, and a water collection tank 64 is provided below the production frame 1. The diversion groove is communicated with the water collection tank 64; A pressurized water pump 65 is further installed on the production frame 1. The inlet of the pressurized water pump 65 is communicated with the water collection tank 64 through a first connecting pipeline, and the outlet of the pressurized water pump 65 is communicated with the cleaning water gun 62 through a second connecting pipeline; A filter screen is provided in the second connecting pipeline.

[0025] In this embodiment, the fan 63 and the cleaning water gun 62 are arranged in a staggered manner to form a process sequence of "first flushing and then air - drying". When the system operates, after the sand - blasted pipe workpiece is conveyed to the cleaning cavity 611 through the chain - type track 21, the spraying of the cleaning water gun 62 and the air - drying of the fan 63 are synchronously triggered by the logic controller, realizing the removal of residual sand on the surface and drying, and providing a clean surface for the subsequent spraying process.

[0026] Specifically, as Figures 1-2 、 Figure 9As shown in the figure, a spraying production line for pipe workpieces further includes a drying treatment component, which includes a drying chamber 71, an infrared heater 72, and a circulation fan 73. The drying chamber 71 is installed on the production rack 1 and is arranged downstream of the second spraying component. The drying chamber 71 is provided with a fourth inlet 712, a fourth outlet 713, and a drying cavity 711. The drying cavity 711 is respectively communicated with the fourth inlet 712 and the fourth outlet 713. The infrared heaters 72 are arranged in an array on the top of the drying cavity 711. The circulation fan 73 is installed on the side wall of the drying chamber 71 and is provided with an air supply channel 74. An adjustable air outlet is provided at the outlet of the air supply channel 74, and the adjustable air outlet forms an angle of 30 - 45 degrees with the axial direction of the pipe workpiece.

[0027] Specifically, as Figures 1-5 shown in the figure, the first sandblasting gun 32 is slidably fitted on the side wall of the sandblasting chamber 31 through at least one first guide rail slider pair; among them, the first guide rail slider pair includes: a first guide rail installed on the side wall of the sandblasting chamber 31; a first slider installed on the first sandblasting gun 32; The sandblasting treatment component further includes a first sandblasting driving member 34, a second sandblasting driving member 35, and a sandblasting support 36. The sandblasting support 36 is installed on the sandblasting chamber 31. The first sandblasting driving member 34 and the second sandblasting driving member 35 are respectively installed on the sandblasting support 36. The movable end of the first sandblasting driving member 34 is connected to the first sandblasting gun 32, and the movable end of the second sandblasting driving member 35 is connected to the second sandblasting gun 33.

[0028] Specifically, as Figures 1-5 shown in the figure, the first spraying nozzle 42 is slidably fitted on the side wall of the spraying chamber 41 through at least one second guide rail slider pair; among them, the second guide rail slider pair includes: a second guide rail installed on the side wall of the spraying chamber 41; a second slider installed on the first spraying nozzle 42; The spraying treatment component further includes a first spraying pump 45 and a second spraying driving member 46. The first spraying pump 45 is installed below the production rack 1. The second spraying driving member 46 is installed on the spraying support 43. The outlet of the first spraying pump 45 is connected to the first spraying nozzle 42, and the movable end of the second spraying driving member 46 is connected to the second spraying nozzle 44; It further includes a first controller, and the first controller controls the operation timing of the conveying drive motor 24, the first sandblasting driving member 34, the second sandblasting driving member 35, the first spraying pump 45, and the second spraying driving member 46.

[0029] Specifically, as Figures 1-2As shown in the figure, the second spraying assembly further includes a paint mixing bin 47, which is installed beside the production rack 1. A mixing mechanism is provided in the paint mixing bin 47. The mixing mechanism includes a mixing support 491, a mixing motor 492, a mixing shaft 493 and mixing blades 494. The mixing support 491 is installed on the paint mixing bin 47, the mixing motor 492 is installed on the mixing support 491, the mixing shaft 493 is connected to the mixing motor 492, and the mixing blades 494 are installed on the mixing shaft 493. The mixing motor 492 is adapted to drive the mixing shaft 493 to drive the mixing blades 494 to rotate; A suction pump 48 is also installed on the paint mixing bin 47. The inlet of the suction pump 48 extends into the paint mixing bin 47 through a third connecting pipeline, and the outlet of the suction pump 48 is connected to the second spray nozzle 44 through a fourth connecting pipeline.

[0030] Specifically, a pipe workpiece spraying production line further includes a logic controller, which is electrically connected to the first stroke monitoring sensor 51, the second stroke monitoring sensor 52 and the first controller respectively; When the first stroke monitoring sensor 51 detects that the pipe workpiece has completely entered the sandblasting chamber 311, the logic controller controls the chain track 21 to pause and activates the reciprocating movement of the first sandblasting gun 32 and the second sandblasting gun 33 through the first controller. After the preset sandblasting cycle ends, the chain track 21 is restarted for conveying; When the second stroke monitoring sensor 52 detects that the pipe workpiece has completely entered the spraying chamber 411, the logic controller controls the chain track 21 to pause and activates the lifting and spraying operation of the first spray nozzle 42 through the first controller, and starts the second spraying assembly to spray the inner surface of the pipe workpiece after the outer surface spraying is completed. After the preset spraying cycle ends, the chain track 21 is restarted for conveying.

[0031] In this embodiment, the pipe workpiece is clamped into the circular card slot of the installation base 22, and the conveying drive motor 24 drives the chain track 21 to move step by step, and the pipes are sent into each processing station in turn; When the pipe workpiece passes through the first stroke monitoring sensor 51, after the first stroke monitoring sensor 51 detects it, it sends a signal to the logic controller. After a certain period of time, the logic controller controls the conveying drive motor 24 to pause. At this time, the pipe workpiece is in the sandblasting chamber 311. Subsequently, the first sandblasting drive member 34 drives the first sandblasting gun 32 to move up and down along the first guide rail to sandblast the outer surface of the pipe workpiece. The second sandblasting drive member 35 drives the second sandblasting gun 33 to synchronously extend into the inner cavity of the pipe workpiece, and the second sandblasting gun 33 moves up and down to process the inner wall. After a preset time (such as 60 seconds), the chain-type track 21 restarts, and the pipe workpiece continues to move into the cleaning chamber 611. During the movement of the pipe workpiece, the pressurized water pump 65 extracts the filtered water in the water collection tank 64 and flushes the residual sand grains and impurities on the inner and outer walls of the pipe through the cleaning water gun 62. Subsequently, it moves to the fan 63 in the cleaning chamber 611, and the fan 63 blows to dry the water on the surface of the pipe workpiece; The pipe workpiece after cleaning treatment moves through the second stroke monitoring sensor 52 through the chain-type track 21. After the second stroke monitoring sensor 52 detects it, it sends a signal to the logic controller. After a certain period of time, the logic controller controls the conveying drive motor 24 to pause. At this time, the pipe workpiece is in the spraying chamber 411 in the spraying chamber 41. Subsequently, the first spraying pump drives the first spray nozzle 42 to move up and down along the second guide rail to spray paint on the outer surface of the pipe workpiece. After completion, the chain-type track 21 restarts, and the pipe moves to the second spraying component station. The second spraying drive member 46 drives the second spray nozzle 44 to extend into the inner cavity of the pipe workpiece, and the suction pump 48 extracts the paint mixed by the stirring blade 494 from the paint mixing chamber 47 and sprays the inner wall of the pipe workpiece through the rotary nozzle; Finally, the pipe workpiece enters the drying chamber 711. The infrared heater 72 heats up to the set temperature (such as 120 °C), and the circulation fan 73 blows hot air at an inclined angle to accelerate the curing of the coating. Finally, the pipe workpiece completed by the operator is unloaded from the mounting base 22, and then the untreated pipe workpiece is installed on the already vacant mounting base 22 and returns to the starting position along the chain-type track 21 to enter the next cycle.

[0032] In the above specific embodiments, the technical problems solved, technical solutions, and beneficial effects of the present invention are further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pipe workpiece spraying production line, characterized in that: include: Production rack (1); A conveying component, the conveying component comprising a chain track (21), the chain track (21) being mounted on the production frame (1), a plurality of mounting bases (22) being provided on the chain track (21), the mounting bases (22) being provided with circular slots, and the pipe workpiece being suitable for being clamped in the circular slots to be fixed on the mounting bases (22); A sandblasting component, the sandblasting component comprising a sandblasting chamber (31), a first sandblasting gun (32) and a second sandblasting gun (33); the sandblasting chamber (31) is mounted on the production frame (1); the sandblasting chamber (31) is provided with a sandblasting chamber (311), a first inlet (312) and a first outlet (313); the sandblasting chamber (311) is respectively connected to the first inlet (312) and the first outlet (313); the first sandblasting gun (32) is slidably mounted on a side wall of the sandblasting chamber (31); the first sandblasting gun (32) is adapted to move up and down to perform sandblasting on the outer surface of a tubular workpiece entering the sandblasting chamber (311); the second sandblasting gun (33) is mounted on the top of the sandblasting chamber (31); the second sandblasting gun (33) is adapted to move up and down to perform sandblasting on the inner surface of the tubular workpiece entering the sandblasting chamber (311); A spraying treatment component, the spraying treatment component comprising a first spraying component and a second spraying component, the first spraying component comprising a spraying chamber (41) and at least one first spraying nozzle (42), the spraying chamber (41) being provided with a spraying chamber (411), a second inlet (412) and a second outlet (413), the spraying chamber (411) being respectively connected to the second inlet (412) and the second outlet (413), the first spraying nozzle (42) being mounted on a side wall of the spraying chamber (41), the first spraying nozzle (42) being suitable for uniformly spraying the outer surface of a pipe workpiece entering the spraying chamber (411); The second spraying assembly is arranged outside the spraying chamber (41), and comprises a spraying bracket (43) and a second spraying nozzle (44). The spraying bracket (43) is mounted on the production frame (1), and the second spraying nozzle (44) is mounted on the spraying bracket (43). The second spraying nozzle (44) is suitable for moving up and down to spray the inner surface of the pipe workpiece; a stroke monitoring component, the stroke monitoring component comprising a first stroke monitoring sensor (51), a second stroke monitoring sensor (52) and a logic controller, the first stroke monitoring sensor (51) being installed at a first inlet (312) of the sandblasting chamber (31), the first stroke monitoring sensor (51) being suitable for detecting an arrival signal of a pipe workpiece entering the sandblasting chamber (311); The second stroke monitoring sensor (52) is installed at the second inlet (412) of the spray chamber (41), and the second stroke monitoring sensor (52) is suitable for detecting a signal indicating that the pipe workpiece has entered the spray chamber (411). The stroke monitoring component is suitable for controlling the start and stop of the chain track (21) and the operation sequence of the sandblasting component and the spraying component.

2. A pipe workpiece spraying production line according to claim 1, characterized in that: The conveying component further comprises a plurality of track supports (23), wherein the track supports (23) are provided with moving grooves, the track supports (23) are mounted on the production supports, and the chain-type tracks (21) move in the moving grooves.

3. A pipe workpiece spraying production line according to claim 2, characterized in that: The conveying component further comprises a plurality of conveying drive components, wherein the conveying drive components comprise a conveying drive motor (24) and a conveying drive gear (25), wherein the conveying drive motor (24) is installed below the production frame (1), wherein the conveying drive gear (25) is connected to a movable end of the conveying drive motor (24), wherein the conveying drive gear (25) is meshed with the chain-type track (21), and wherein the conveying drive motor (24) is adapted to drive the conveying drive gear (25) to rotate so as to drive the chain-type track (21) to move in the movable groove.

4. The pipe workpiece spraying production line according to claim 1, characterized in that: The cleaning device also comprises a cleaning treatment component, the cleaning treatment component comprising a cleaning chamber (61), a cleaning water gun (62) and a fan (63); the cleaning chamber (61) is mounted on the production frame (1) and arranged between the sandblasting treatment component and the first spraying assembly; the cleaning chamber (61) is provided with a cleaning chamber (611), a third inlet (612) and a third outlet (613); the cleaning chamber (611) is respectively connected to the third inlet (612) and the third outlet (613); the cleaning water gun (62) is mounted on the top of the cleaning chamber (61); the cleaning water gun (62) is suitable for flushing the pipe workpiece that has been subjected to sandblasting and enters the cleaning chamber (611); The fan (63) is installed on the top of the cleaning chamber (61), and the fan (63) is suitable for blowing air toward the pipe workpiece.

5. A pipe workpiece spraying production line according to claim 4, characterized in that: A guide groove is provided at the bottom of the cleaning chamber (61), a water collecting box (64) is provided below the production frame (1), and the guide groove is in communication with the water collecting box (64); A pressurized water pump (65) is also installed on the production frame (1), the inlet of the pressurized water pump (65) is connected to the water collecting tank (64) through a first connecting pipeline, and the outlet of the pressurized water pump (65) is connected to the cleaning water gun (62) through a second connecting pipeline; A filter screen is provided in the second connecting pipeline.

6. The pipe workpiece spraying production line according to claim 1, characterized in that: The invention also comprises a drying processing component, wherein the drying processing component comprises a drying chamber (71), an infrared heater (72) and a circulating fan (73); the drying chamber (71) is mounted on the production frame (1) and arranged downstream of the second spraying assembly; the drying chamber (71) is provided with a fourth inlet (712), a fourth outlet (713) and a drying chamber (711); the drying chamber (711) is respectively connected to the fourth inlet (712) and the fourth outlet (713); the infrared heater (72) is arranged in an array at the top of the drying chamber (711); the circulating fan (73) is mounted on the side wall of the drying chamber (71) and is provided with an air supply channel (74); an adjustable air outlet is provided at the outlet of the air supply channel (74); the adjustable air outlet forms an angle of 30-45 degrees with the axial direction of the pipe workpiece.

7. The pipe workpiece spraying production line according to claim 3, characterized in that: The first sandblasting gun (32) is slidably mounted on the side wall of the sandblasting chamber (31) via at least one first guide rail slider pair; wherein: The first guide rail slider pair comprises: A first guide rail mounted on a side wall of the sandblasting chamber (31); A first sliding block mounted on the first sandblasting gun (32); The sandblasting component further comprises a first sandblasting drive (34), a second sandblasting drive (35) and a sandblasting bracket (36); the sandblasting bracket (36) is mounted on the sandblasting chamber (31); the first sandblasting drive (34) and the second sandblasting drive (35) are respectively mounted on the sandblasting bracket (36); the movable end of the first sandblasting drive (34) is connected to the first sandblasting gun (32); and the movable end of the second sandblasting drive (35) is connected to the second sandblasting gun (33).

8. The pipe workpiece spraying production line according to claim 7, characterized in that: The first spray nozzle (42) is slidably mounted on the side wall of the spray chamber (41) via at least one second guide rail slider pair; wherein: The second guide rail slider pair comprises: A second guide rail mounted on a side wall of the spray chamber (41); a second sliding block mounted on the first spray nozzle (42); The spraying treatment component further comprises a first spraying pump (45) and a second spraying driving member (46), wherein the first spraying pump (45) is installed below the production frame (1), and the second spraying driving member (46) is installed on the spraying bracket (43), the outlet of the first spraying pump (45) is connected to the first spraying nozzle (42), and the movable end of the second spraying driving member (46) is connected to the second spraying nozzle (44); It also includes a first controller, which controls the operation sequence of the conveying drive motor (24), the first sandblasting drive component (34), the second sandblasting drive component (35), the first spraying pump (45) and the second spraying drive component (46).

9. The pipe workpiece spraying production line according to claim 1, characterized in that: The second spraying assembly further comprises a paint stirring chamber (47), the paint stirring chamber (47) being mounted beside the production frame (1), a stirring mechanism being provided in the paint stirring chamber (47), the stirring mechanism comprising a stirring support (491), a stirring motor (492), a stirring shaft (493) and a stirring blade (494), the stirring support (491) being mounted on the paint stirring chamber (47), the stirring motor (492) being mounted on the stirring support (491), the stirring shaft (493) being connected to the stirring motor (492), the stirring blade (494) being mounted on the stirring shaft (493), and the stirring motor (492) being suitable for driving the stirring shaft (493) to drive the stirring blade (494) to rotate; A suction pump (48) is also installed on the paint stirring chamber (47); the inlet of the suction pump (48) extends into the paint stirring chamber (47) through a third connecting pipeline, and the outlet of the suction pump (48) is connected to the second spray nozzle (44) through a fourth connecting pipeline.

10. The pipe workpiece spraying production line according to claim 3, characterized in that: It also includes a logic controller, wherein the logic controller is electrically connected to the first stroke monitoring sensor (51), the second stroke monitoring sensor (52) and the first controller respectively; When the first stroke monitoring sensor (51) detects that the pipe workpiece has completely entered the sandblasting chamber (311), the logic controller controls the chain track (21) to stop running and activates the reciprocating motion of the first sandblasting gun (32) and the second sandblasting gun (33) through the first controller, and restarts the chain track (21) for transportation after a preset sandblasting cycle ends; When the second stroke monitoring sensor (52) detects that the pipe workpiece has completely entered the spraying chamber (411), the logic controller controls the chain track (21) to stop running through the first controller and activates the lifting and spraying operation of the first spray nozzle (42), and after the outer surface spraying is completed, starts the second spraying component to spray the inner surface of the pipe workpiece, and restarts the chain track (21) for transportation after the preset spraying cycle ends.

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