Automatic sandblasting and spraying equipment for oil casing thread end and its use method

Abstract

The present invention proposes an automatic sandblasting and spraying device for the threaded end of an oil casing and a method of using the same, which relates to the technical field of oil casing threaded end processing, including a spraying component and a sandblasting component, wherein a first mounting rail is installed on one side of the spraying component, a second mounting rail is installed on one side of the sandblasting component, a conveying component is installed on the second mounting rail, a lifting component is installed on both the first mounting rail and the second mounting rail, and a guide component is fixedly installed between the first mounting rail and the second mounting rail. By adopting the automated spraying component and sandblasting component, the processing efficiency and the yield rate are improved. By adopting the guide component, the effect of switching the oil casing from the sandblasting component position to the spraying component position is achieved, the operation is automated, and the production processing efficiency is improved. By adopting the lifting component, the uniformity of the sandblasting and spraying processing is improved. After the processing is completed, the material is automatically unloaded, and the material guide component is cooperated to facilitate the automatic switching of the position of the oil casing.

Description

Technical Field

[0001] The invention relates to the technical field of oil casing thread end processing, in particular to automatic sandblasting and spraying equipment for oil casing thread end and a use method thereof. Background Art

[0002] Oil casing refers to petroleum casing, which is a steel pipe used to support the well wall of oil and gas wells to ensure the normal operation of the entire oil well during the drilling process and after completion. During use, the connection between the head casing is mostly connected by casing and thread. When multiple oil casings are assembled, the threaded end is one of the key factors affecting the stability of the assembly. When processing the threaded end of the oil casing, after threading, the threaded end position of the oil casing needs to be surface processed to ensure its strength and connection stability. Spraying primer and wear-resistant material on the threaded end is one of the surface processing methods.

[0003] At present, when spraying the threaded ends of oil casing, workers mostly use handheld spray guns to spray. During spraying, its uniformity is affected by the workers' proficiency, resulting in poor spraying uniformity during mass production. In addition, when spraying, the surface of the threaded end needs to be polished, which is a cumbersome operation, resulting in low processing efficiency and low degree of automation, making it inconvenient to carry out large-scale processing operations. In addition, manual participation is required during sandblasting and spraying, which is labor-intensive.

[0004] Therefore, an automatic sandblasting and spraying device for the threaded end of oil casing and a method of using the same are proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to remedy the shortcomings of the existing technology and propose an automatic sandblasting and spraying equipment for the threaded end of oil casing and a method of using the same. The equipment can automatically perform sandblasting and surface spraying on the threaded end of oil casing and solve the problems of low efficiency, high labor intensity and poor processing uniformity in the current surface processing of the threaded end of oil casing and threaded end.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic sandblasting and spraying equipment for the threaded end of an oil casing and a method of using the same, comprising a spraying assembly and a sandblasting assembly, wherein a first mounting rail is fixedly mounted on one side of the spraying assembly, a second mounting rail is fixedly mounted on one side of the sandblasting assembly, a conveying assembly is mounted in an array on the second mounting rail, and a lifting assembly for lifting and rotating the oil casing is mounted in an array on both the first mounting rail and the second mounting rail, a guide assembly for guiding and stacking the oil casing is fixedly mounted between the first mounting rail and the second mounting rail, the spraying assembly comprises a first base plate, a lower shell is slidably mounted on the first base plate, and an upper shell is hinged on the lower shell, a spraying plate is mounted inside the upper shell, spray heads are obliquely mounted on both ends of the spraying plate, a connecting plate is fixedly mounted on one side of the spraying plate, and a jet head is obliquely mounted on one side of the connecting plate.

[0007] By adopting the above technical solution, when the threaded end of the oil casing is subjected to surface treatment, the oil casing is conveyed along the conveying assembly to the second mounting rail through an external conveying device. After the conveying is completed, the lifting assembly on the second mounting rail is opened to lift the oil casing from the conveying assembly and make the oil casing rotate on the lifting assembly. Then the working end of the sandblasting assembly moves toward the oil casing, and the working end of the sandblasting assembly sandblasts and polishes the threaded end of the oil casing. After the sandblasting is completed, the working end of the sandblasting assembly retracts, and the lifting assembly guides the oil casing to the guide assembly, and the oil casing is moved to the position of the first mounting rail through the guide assembly, and the oil casing is lifted by the lifting assembly on the first mounting rail. The casing is lifted and then rotated, and the upper shell is driven to move on the first bottom plate through the lower shell, and the threaded end of the oil casing extends into the interior of the upper shell and the lower shell, so that the threaded end is located below the spray plate. The external air supply device is first used to supply air to the nozzle head so that the nozzle head cleans the threaded end position and reduces the powder remaining during sandblasting. Then, the spray material is pressurized by the external spraying pressure device and sprayed out through the spray head to perform surface processing on the threaded end position. After the spraying is completed, the upper shell and the lower shell retract on the first bottom plate, and the lifting component guides the oil casing to the guide component, and the oil casing is unloaded and stacked through the guide component to complete the processing.

[0008] Furthermore, first electric slide rails are fixedly installed on both sides of the upper end of the first base plate, the lower end of the lower shell is fixedly installed on the movable end of the first electric slide rail, the lower shell and the upper shell are hinged by hinges, and locks are fixedly installed on the other side of the lower shell and the upper shell, and a first exhaust pipe is fixedly installed on one side of the upper end of the upper shell.

[0009] By adopting the above technical solution, when the lower shell and the upper shell are moved, the first electric slide rail is used for driving, and through the lock and hinge, the upper shell can be easily flipped on the lower shell for easy maintenance. Through the first exhaust pipe, it is convenient to connect to external air purification equipment to clean the exhaust gas generated during spraying and reduce pollution.

[0010] Furthermore, a first through hole is provided on one side of the upper shell and the lower shell close to the lifting assembly, a first laser sensor is fixedly installed on the lower shell at the lower side of the first through hole, a collecting box is plugged into one side of the lower shell, and a composite hard tube is fixedly installed on the upper end of the upper shell, the interior of the composite hard tube is formed by a composite of an air supply pipe and a paint supply pipe, and the spray head and the air jet head are both connected to the composite hard tube.

[0011] By adopting the above technical solution, when the upper shell and the lower shell move, the threaded end of the oil casing extends into the interior of the lower shell and the upper shell through the first through hole, and the first laser sensor is used to calculate the length of the oil casing entering the interior of the upper shell, and then determine whether the position of the threaded end is below the spray plate. The collection box is used to collect debris and waste liquid generated during spraying, thereby reducing pollution. The composite hard pipe is used to supply air to the air jet head and supply spraying raw materials to the spray head, thereby facilitating spraying processing of the threaded end of the oil casing.

[0012] Among them, the sandblasting assembly includes a second base plate, a collection bin is slidably installed on the second base plate, and a sandblasting box is installed inside the collection bin. A second through hole is opened on the side of the sandblasting box close to the lifting assembly, and a sandblasting tube is fixedly installed on the upper end of the sandblasting box.

[0013] By adopting the above technical solution, when sandblasting and grinding is performed, the collection bin collects the grinding sand generated during the sandblasting, and the nozzle inside the sandblasting box performs sandblasting and grinding on the surface of the threaded end of the oil casing. Through the sandblasting tube, an external sand supply device is conveniently supplied with grinding sand to the interior of the sandblasting box.

[0014] Furthermore, second electric slide rails are fixedly installed on both sides of the upper end of the second base plate, the collection bin is installed on the movable end of the second electric slide rail, and a second exhaust pipe is fixedly installed on one side of the upper end of the sandblasting box.

[0015] By adopting the above technical solution, when the collection bin moves on the second base plate, the collection bin is driven by the second electric slide rail, and the second exhaust pipe is used to facilitate connection to an external air purification device to treat the exhaust gas generated during sandblasting and reduce pollution.

[0016] Specifically, a second laser sensor is fixedly mounted on the lifting assembly located on the second mounting rail near the sandblasting assembly. The conveying assembly includes a fixed frame, and a conveying roller with a concave structure is rotatably mounted between the upper ends of the fixed frame.

[0017] By adopting the above technical solution, when the oil casing is conveyed, the second laser sensor detects the conveying length, and stops conveying the oil casing after conveying to the set position. During conveyance, the oil casing moves on the conveying roller, thereby improving the smoothness of conveyance.

[0018] Among them, the lifting assembly includes a mounting plate, and the lifting assembly is installed on the first mounting rail and the second mounting rail through the mounting plate. A lifting cylinder is fixedly installed at the middle position of the upper end of the mounting plate, and a lifting member is fixedly installed on the upper end of the lifting cylinder, and the lifting member is an L-shaped structure. A driving rubber wheel is rotatably installed on the upper end of the lifting member, and a lifting frame is vertically slidably installed on one side of the lifting member, and a driven rubber wheel is rotatably installed on the upper end of the lifting frame.

[0019] By adopting the above technical solution, when lifting, the lifting cylinder extends, so that the lifting member drives the driving rubber wheel and the driven rubber wheel to rise, and the oil casing is located between the driving rubber wheel and the driven rubber wheel, thereby achieving the effect of lifting the oil casing, and when the driving rubber wheel rotates, the oil casing rotates.

[0020] Furthermore, a third electric slide rail is vertically fixedly installed on one side of the lifting member, the lifting frame is fixedly installed on the movable end of the third electric slide rail, a gearbox is fixedly installed on one side of the lifting member, and a driving motor is fixedly installed on the driving end of the gearbox, the output end of the gearbox is fixedly connected to the rotating shaft end of the driving rubber wheel, sleeves are fixedly installed on both sides of the lifting cylinder between the lifting member and the mounting plate, and a limit lever is fixedly installed above the third electric slide rail, and the limit lever is located between the driving rubber wheel and the driven rubber wheel.

[0021] By adopting the above technical solution, when the oil casing needs to be rotated, the drive motor drives the drive rubber wheel through the gearbox to rotate the oil casing, and when the oil casing needs to be discharged onto the guide assembly, the third electric slide rail drives the lifting frame to descend, causing the driven rubber wheel to descend, forming a slope between the drive rubber wheel and the driven rubber wheel, and supporting the oil casing by the limit lever, so that the oil casing rolls along the driven rubber wheel onto the guide assembly, thereby switching the position of the oil casing.

[0022] Wherein, the guide assembly includes a guide plate, one end of the guide plate is an arc-shaped structure, and the guide plate is in an inclined state, the lower end of the guide plate is fixedly installed with a support plate, and the support plate is fixedly installed on the first mounting rail and the second mounting rail respectively, a blanking plate is obliquely installed on one side of the guide plate, and a U-shaped stacking box is fixedly installed on one side of the blanking plate, and slide grooves are vertically opened on both sides of the stacking box, and a stacking cylinder is fixedly installed on the lower end of the stacking box, and a supporting plate is fixedly installed on the output end of the stacking cylinder, and both ends of the supporting plate are slidably clamped in the inside of the slide groove.

[0023] By adopting the above technical solution, when the oil casing falls on the guide plate, the guide plate is in an inclined state, so the oil casing rolls along the guide plate, and one end of the guide plate is an arc-shaped structure, which is located above the second mounting rail, so that the oil casing can be switched from the second mounting rail position to the first mounting rail position, which facilitates position switching. After the spraying process is completed, the oil casing falls on the blanking plate, rolls along the blanking plate to the inside of the stacking box, and falls on the carrying plate. After collecting a layer of oil casing, the stacking cylinder drives the carrying plate to descend, so that the newly fallen oil casing is stacked on top of the first layer of oil casing, forming a stacking state, which is convenient for collection.

[0024] A method for using automatic sandblasting and spraying equipment for threaded ends of oil casing, the specific steps are as follows:

[0025] Step 1: transport the oil casing that needs to be processed on the threaded end to the second mounting rail and push it forward, so that the oil casing moves along the conveying roller on the conveying assembly.

[0026] Step 2: After the oil casing is moved into position (the second laser sensor is used to determine whether it is transported into position), the lifting assembly on the second mounting rail lifts the oil casing and drives the oil casing, and the oil casing rotates through the driving rubber wheel and the driven rubber wheel.

[0027] Step 3: Turn on the sandblasting assembly. The sandblasting assembly moves the sandblasting box toward the oil casing through the second electric slide rail. The threaded end of the oil casing extends into the interior of the sandblasting box. The sandblasting assembly sandblasts and polishes the threaded end of the oil casing.

[0028] Step 4: After the grinding is completed, the working end of the sandblasting assembly retracts, and the lifting assembly guides the oil casing to one side. The oil casing falls on the guide plate on the guide assembly and moves along the guide assembly to the first mounting rail position.

[0029] Step 5: The lifting assembly on the first mounting rail lifts the oil casing and rotates the oil casing. The lower shell in the spray assembly moves, and the threaded end of the oil casing is located below the spray plate. The threaded end is first cleaned by the spray head, and then the spray head sprays primer or powder coating on the threaded end of the oil casing.

[0030] Step 6: After spraying is completed, the spraying end of the spraying assembly retracts, and the lifting assembly pushes the oil casing downward at an angle, and the oil casing falls on the blanking plate on the guide assembly, and is stacked by the guide assembly to complete the processing.

[0031] Compared with the existing technology, the automatic sandblasting and spraying equipment for the threaded end of oil casing and the use method thereof have the following beneficial effects:

[0032] 1. The present invention adopts an air jet head and a double spray head. When spraying the surface material, the dust attached after sandblasting is first cleaned to improve the adhesion effect of the surface material. The first laser sensor is used to automatically locate the position of the thread end of the oil casing to improve the accuracy of spraying.

[0033] 2. The present invention achieves the effect of switching the oil casing from the sandblasting component position to the spraying component position by adopting the guide component, which facilitates automatic switching of the processing position and automated operation, effectively reduces human participation and reduces the labor intensity of workers. In addition, through the stacking box in the guide component, after the spraying component processing is completed, automatic unloading and stacking are carried out, thereby improving production and processing efficiency.

[0034] 3. The present invention adopts a lifting assembly to automatically lift and rotate the oil casing during sandblasting and spraying, thereby improving the uniformity of sandblasting and spraying. The lifting driven rubber wheel facilitates automatic unloading after processing is completed, and cooperates with the material guide assembly to automatically switch the position of the oil casing.

[0035] Other advantages, objects and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0037] Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle;

[0038] Figure 3 Schematic diagram of the structure of the spray assembly in the present invention;

[0039] Figure 4 This is a schematic diagram of the structure of the spray assembly after it is opened in the present invention;

[0040] Figure 5 It is a structural diagram of the position of the spray plate in the present invention;

[0041] Figure 6 Schematic diagram of the structure of the sandblasting assembly of the present invention;

[0042] Figure 7 This is a structural diagram of the position of the first mounting rail in the present invention;

[0043] Figure 8 This is a structural diagram of the position of the second mounting rail in the present invention;

[0044] Figure 9 This is a schematic diagram of the structure of the lifting assembly of the present invention during lifting;

[0045] Figure 10 This is a schematic structural diagram of the lifting assembly during blanking in the present invention;

[0046] Figure 11 Schematic diagram of the structure of the flow guide assembly in the present invention.

[0047] In the picture:

[0048] 1. Spraying assembly; 101. First base plate; 102. Lower housing; 103. Upper housing; 104. Spraying plate; 105. Spraying head; 106. Connecting plate; 107. Spraying head; 108. Locking catch; 109. First exhaust pipe; 1010. First through hole; 1011. First laser sensor; 1012. Collection box; 1013. Composite rigid tube; 1014. First electric slide rail;

[0049] 2. Sandblasting assembly; 201. Second bottom plate; 202. Collection chamber; 203. Sandblasting box; 204. Second through hole; 205. Sandblasting tube; 206. Second electric slide rail; 207. Second exhaust pipe;

[0050] 3. The first mounting rail;

[0051] 4. Second mounting rail;

[0052] 5. Conveying assembly; 501. Fixing frame; 502. Conveying roller;

[0053] 6. Lifting assembly; 601. Mounting plate; 602. Lifting cylinder; 603. Lifting member; 604. Driving rubber wheel; 605. Lifting frame; 606. Driven rubber wheel; 607. Third electric slide rail; 608. Gearbox; 609. Driving motor; 6010. Casing; 6011. Limit lever;

[0054] 7. Guide assembly; 701. Guide plate; 702. Support plate; 703. Blanking plate; 704. Palletizing box; 705. Chute; 706. Palletizing cylinder; 707. Loading plate;

[0055] 8. Second laser sensor. DETAILED DESCRIPTION

[0056] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0057] See also Figures 1 to 11The present invention provides the following embodiments: an automatic sandblasting and spraying device for the threaded end of oil casing and its use method, comprising a spraying assembly 1 and a sandblasting assembly 2, a first mounting rail 3 being fixedly mounted on one side of the spraying assembly 1, a second mounting rail 4 being fixedly mounted on one side of the sandblasting assembly 2, the first mounting rail 3 and the second mounting rail 4 being used to ensure that the conveying assembly 5 and the lifting assembly 6 are located on the same straight line, the conveying assembly 5 is mounted in an array on the second mounting rail 4, and the external conveying device conveys the oil casing to the second mounting rail 4. When the rail 4 is in the position, the oil casing is first supported by the conveying assembly 5 to improve the smoothness during transportation, and the first mounting rail 3 and the second mounting rail 4 are both equipped with a lifting assembly 6 for lifting and rotating the oil casing. When the oil casing is sandblasted and sprayed, the lifting assembly 6 lifts and drives the oil casing to rotate itself, thereby improving the uniformity of sandblasting and spraying. A guide assembly 7 for guiding and stacking the oil casing is fixedly installed between the first mounting rail 3 and the second mounting rail 4. , it is convenient to switch the position of the oil casing through the guide component 7, and guide the oil casing from the second mounting rail 4 position to the first mounting rail 3 position after the sandblasting is completed. After the spraying is completed, the oil casing is guided from the first mounting rail 3 position to the stacking position for stacking, thereby improving the degree of automation during processing and improving processing efficiency. The spraying component 1 includes a first bottom plate 101, a lower shell 102 is slidably mounted on the first bottom plate 101, and an upper shell 103 is hinged on the lower shell 102, and a spraying assembly is installed inside the upper shell 103. Plate 104, spray heads 105 are installed obliquely at both ends of the spray plate 104, a connecting plate 106 is fixedly installed on one side of the spray plate 104, and a nozzle 107 is installed obliquely on one side of the connecting plate 106. When spraying, the nozzle 107 is first used to spray the threaded end of the oil casing to blow off the debris remaining during the sandblasting process to avoid affecting the spraying, and then the threaded end is sprayed through the symmetrically distributed spray heads 105 to form a coating at the threaded end of the oil casing to form a protective layer.

[0058] Please refer to Figures 3 to 5, first electric slide rails 1014 are fixedly installed on both sides of the upper end of the first base plate 101, and the lower end of the lower shell 102 is fixedly installed on the movable end of the first electric slide rail 1014, and then the position of the lower shell 102 is adjusted by the first electric slide rail 1014, so that the end of the oil casing is moved to the interior of the lower shell 102 and the upper shell 103 for spraying. The lower shell 102 and the upper shell 103 are hinged by a hinge, and a lock 108 is fixedly installed on the other side of the lower shell 102 and the upper shell 103. By opening the lock 108, the upper shell 103 can be easily moved between the lower shell 102 and the upper shell 103 using the hinge. 2, so as to facilitate the inspection of the interior of the upper shell 103 and the lower shell 102. A first exhaust pipe 109 is fixedly installed on one side of the upper end of the upper shell 103. During spraying, the first exhaust pipe 109 is connected to an external air purification device to facilitate the extraction and purification of the exhaust gas generated during spraying, thereby reducing pollution to the environment. A first through hole 1010 is opened on one side of the upper shell 103 and the lower shell 102 near the lifting component 6, so that the oil casing can extend through the first through hole 1010 to the interior of the upper shell 103 and the lower shell 102. A first laser sensor is fixedly installed on the lower shell 102 at the lower side of the first through hole 1010. The sensor 1011 is used to determine the length of the oil casing entering the lower shell 102 through the first laser sensor 1011 when the lower shell 102 moves, so that the threaded end of the oil casing is stably extended to the bottom of the spraying plate 104, thereby improving the accuracy of spraying. The principle is as follows: when the lower shell 102 moves, when the first laser sensor 1011 detects the position of the oil casing end, it is used as the starting point. Since the distance between the spraying plate 104 and the first through hole 1010 is fixed, and the moving speed of the first electric slide 1014 is fixed, the oil casing can be stably extended to the bottom of the spraying plate 104 by controlling the moving time of the first electric slide 1014. The threaded end of the tube is precisely extended to the bottom of the spray plate 104, and then spraying is carried out. A collection box 1012 is connected to one side of the lower shell 102 to facilitate the collection of waste liquid generated during spraying and reduce pollution. A composite hard tube 1013 is fixedly installed on the upper end of the upper shell 103. The interior of the composite hard tube 1013 is a composite of an air supply pipe and a paint supply pipe. The spray head 105 and the air jet head 107 are both connected to the composite hard tube 1013, which is convenient for installing the spray plate 104 and convenient for connecting to the external spray host and the air supply host to supply air to the air jet head 107 and supply paint to the spray head 105.

[0059] Please refer to Figure 7The sandblasting assembly 2 includes a second bottom plate 201, on which a collecting bin 202 is slidably mounted, for collecting the sand produced by the sandblasting box 203 during sandblasting, and a sandblasting box 203 is mounted inside the collecting bin 202 for sandblasting the threaded end of the oil casing. A second through hole 204 is provided on the side of the sandblasting box 203 near the lifting assembly 6, so that when the collecting bin 202 moves, one end of the oil casing can extend through the second through hole 204 to the interior of the sandblasting box 203 for sandblasting. A sandblasting tube 205 is fixedly installed on the upper end of the box 203 to facilitate the supply of grinding sand. Second electric slide rails 206 are fixedly installed on both sides of the upper end of the second base plate 201. The collection bin 202 is installed on the movable end of the second electric slide rail 206. The second electric slide rail 206 is used to facilitate the adjustment of the position of the collection bin 202. A second exhaust pipe 207 is fixedly installed on one side of the upper end of the sandblasting box 203. When sandblasting, the second exhaust pipe 207 is connected to an external air purification device to reduce the pollution generated during sandblasting.

[0060] Please refer to Figure 8 A second laser sensor 8 is fixedly mounted on the lifting assembly 6 on the second mounting rail 4 near the sandblasting assembly 2 to sense the length of the oil casing during transportation and determine whether it has been transported to the correct position. The principle of determining whether it has been transported to the correct position is the same as that of the first laser sensor 1011. The conveying assembly 5 includes a fixed frame 501, and a concave conveying roller 502 is rotatably mounted between the upper ends of the fixed frame 501. During transportation, the oil casing moves on the conveying roller 502, and the conveying roller 502 rotates, thereby improving stability during transportation.

[0061] Please refer to Figure 9 and Figure 10The lifting assembly 6 includes a mounting plate 601, which is convenient for installing the lifting assembly 6. The lifting assembly 6 is installed on the first mounting rail 3 and the second mounting rail 4 through the mounting plate 601. A lifting cylinder 602 is fixedly installed at the middle position of the upper end of the mounting plate 601. When lifting, the lifting cylinder 602 extends, and a lifting member 603 is fixedly installed on the upper end of the lifting cylinder 602. The lifting member 603 is an L-shaped structure. A driving rubber wheel 604 is rotatably installed on the upper end of the lifting member 603. When the lifting cylinder 602 pushes the lifting member 603, the height of the driving rubber wheel 604 is increased. The lifting frame 605 is vertically slidably installed on one side of the lifting member 603, and a driven rubber wheel 606 is rotatably installed on the upper end of the lifting frame 605. A third electric slide rail 607 is vertically fixedly installed on one side of the lifting member 603. The lifting frame 605 is fixedly installed on the movable end of the third electric slide rail 607. The third electric slide rail 607 is used to adjust the height of the lifting frame 605, so that the lifting frame 605 drives the driven rubber wheel 606 to move up and down. When the driving rubber wheel 604 and the driven rubber wheel 606 are at the same height, a vertical V-shaped structure is formed. The oil casing is lifted, and when the driven rubber wheel 606 descends, the V-shaped structure formed begins to tilt, which makes it easier for the oil casing to fall from between the driving rubber wheel 604 and the driven rubber wheel 606 and fall onto the guide assembly 7. A gearbox 608 is fixedly installed on one side of the lifting member 603, and a driving motor 609 is fixedly installed on the driving end of the gearbox 608. The output end of the gearbox 608 is fixedly connected to the rotating shaft end of the driving rubber wheel 604. When the driving motor 609 is turned on, the driving rubber wheel 604 is driven through the gearbox 608, so that the oil casing rotates, and the lifting member Between 603 and the mounting plate 601, sleeves 6010 are fixedly installed on both sides of the lifting cylinder 602. When the lifting member 603 is raised or lowered, the sleeves 6010 are extended and retracted to improve the stability of the lifting. A limit lever 6011 is fixedly installed above the third electric slide rail 607. The limit lever 6011 is located between the driving rubber wheel 604 and the driven rubber wheel 606. When the driven rubber wheel 606 descends, one side of the oil casing contacts the limit lever 6011, and the auxiliary oil casing is separated from between the driving rubber wheel 604 and the driven rubber wheel 606 and falls onto the guide assembly 7.

[0062] Please refer to Figure 11The guide assembly 7 includes a guide plate 701, one end of the guide plate 701 is an arc-shaped structure, and the guide plate 701 is in an inclined state. When the oil casing falls from the position of the second mounting rail 4 on the guide plate 701, it rolls along the guide plate 701 and rolls to one end of the arc-shaped structure. One end of the arc-shaped structure of the guide plate 701 is located at the position of the first mounting rail 3, which is convenient for switching the position of the oil casing. The lower end of the guide plate 701 is fixedly installed with a support plate 702, and the support plate 702 is respectively fixedly installed on the first mounting rail 3 and the second mounting rail 4, which is convenient for fixing the guide assembly 7. A blanking plate 703 is obliquely installed on one side of the guide plate 701, and a U-shaped stacking box 704 is fixedly installed on one side of the blanking plate 703. When the oil casing falls from the position of the first mounting rail 3 on the guide assembly 7, it falls on the blanking plate 703 and rolls through the blanking plate 703 to fall into the interior of the stacking box 704 for stacking. Both sides of the stacking box 704 are vertically provided with a slide 705. The lower end of the stacking box 704 is fixedly installed with a stacking cylinder 706. The output end of the stacking cylinder 706 is fixedly installed with a carrying plate 707. The two ends of the carrying plate 707 are slidably connected to the inside of the slide 705. When the oil casing falls into the stacking box 704, the carrying plate 707 carries the oil casing. After the oil casing is aligned, the stacking cylinder 706 drives the carrying plate 707 to fall, and the newly rolled oil casing falls on the stacking box. The oil casing and tubing are stacked step by step above the first layer to facilitate later collection. Specifically, since the stacking box 704 has a U-shaped structure, when the oil casing and tubing are stacked, the U-shaped structure limits the position of the oil casing and tubing, so that the oil casing and tubing are neatly arranged inside the stacking box 704. Then, an external strapping belt is used to bundle the arranged oil casing and tubing. The bundled oil casing and tubing are lifted out of the upper end of the stacking box 704 by an external forklift or lifting tool, thereby achieving the effect of convenient collection.

[0063] A method for using automatic sandblasting and spraying equipment for threaded ends of oil casing, the specific steps are as follows:

[0064] Step 1: The oil casing that needs to be processed on the thread end is transported to the second mounting rail 4 and pushed forward, and the oil casing moves along the conveying roller 502 in the conveying assembly 5.

[0065] Step 2: When the oil casing moves, the second laser sensor 8 calculates and determines the position of the oil casing. When it is transported to the right position, the lifting assembly 6 on the second mounting rail 4 lifts the oil casing and drives the oil casing through the driving rubber wheel 604 and the driven rubber wheel 606, causing the oil casing to rotate.

[0066] Step 3: Turn on the sandblasting assembly 2. The collecting bin 202 in the sandblasting assembly 2 moves toward the oil casing through the second electric slide rail 206. The oil casing extends into the sandblasting box 203 through the second through hole 204. The sandblasting box 203 sandblasts and polishes the threaded end of the oil casing.

[0067] Step 4: After the grinding is completed, the working end of the sandblasting assembly 2 retracts, and the lifting assembly 6 guides the oil casing to one side. The oil casing falls on the guide plate 701 in the guide assembly 7 and moves along the guide assembly 7 to the position of the first mounting rail 3.

[0068] Step 5: The lifting assembly 6 on the first mounting rail 3 lifts the oil casing and rotates it. The lower shell 102 in the spray assembly 1 moves, and the first laser sensor 1011 senses the position of the oil casing. The threaded end of the oil casing is located below the spray plate 104. The spray head 107 is first used to clean the threaded end, and then the spray head 105 sprays primer or powder coating on the threaded end of the oil casing.

[0069] Step 6: After spraying is completed, the spraying end of the spraying component 1 retracts, and the lifting component 6 pushes the oil casing down at an angle, and it falls on the blanking plate 703 in the guide component 7, and is stacked by the guide component 7 to complete the processing.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

Claims

1. An automatic sandblasting and spraying equipment for oil casing thread ends, characterized by: The invention comprises a spraying assembly (1) and a sandblasting assembly (2), wherein a first mounting rail (3) is fixedly mounted on one side of the spraying assembly (1), a second mounting rail (4) is fixedly mounted on one side of the sandblasting assembly (2), a conveying assembly (5) is mounted in an array on the second mounting rail (4), and a lifting assembly (6) for lifting and rotating the oil casing is mounted in an array on both the first mounting rail (3) and the second mounting rail (4), the lifting assembly (6) comprising a mounting plate (601), the lifting assembly (6) being mounted on the first mounting rail (3) and the second mounting rail (4) via the mounting plate (601), and a lifting cylinder (602) is fixedly mounted at the middle position of the upper end of the mounting plate (601). The upper end of the lifting cylinder (602) is fixedly mounted with a lifting member (603), and the lifting member (603) is an L-shaped structure. The upper end of the lifting member (603) is rotatably mounted with a driving rubber wheel (604). A lifting frame (605) is vertically slidably mounted on one side of the lifting member (603). The upper end of the lifting frame (605) is rotatably mounted with a driven rubber wheel (606). A third electric slide rail (607) is vertically fixedly mounted on one side of the lifting member (603). The lifting frame (605) is fixedly mounted on the movable end of the third electric slide rail (607). A gearbox (608) is fixedly mounted on one side of the lifting member (603), and a driving end of the gearbox (608) is fixedly mounted. The motor (609) is driven by the transmission (608), the output end of the gearbox (608) is fixedly connected to the rotating shaft end of the driving rubber wheel (604), sleeves (6010) are fixedly installed on both sides of the lifting cylinder (602) between the lifting member (603) and the mounting plate (601), and a limit lever (6011) is fixedly installed above the third electric slide rail (607), and the limit lever (6011) is located between the driving rubber wheel (604) and the driven rubber wheel (606), and a guide assembly (7) for guiding and stacking oil casing is fixedly installed between the first mounting rail (3) and the second mounting rail (4), and the guide assembly (7) includes a guide plate (701). One end of the guide plate (701) is an arc-shaped structure, and the guide plate (701) is in an inclined state. A support plate (702) is fixedly installed at the lower end of the guide plate (701), and the support plate (702) is fixedly installed on the first mounting rail (3) and the second mounting rail (4), respectively. A blanking plate (703) is obliquely installed on one side of the guide plate (701), and a U-shaped stacking box (704) is fixedly installed on one side of the blanking plate (703). Both sides of the stacking box (704) are vertically provided with a slide groove (705). A stacking cylinder (706) is fixedly installed at the lower end of the stacking box (704), and a carrying plate (707) is fixedly installed at the output end of the stacking cylinder (706).The two ends of the carrier plate (707) are slidably engaged with the interior of the slide groove (705). The spray assembly (1) comprises a first bottom plate (101), a lower shell (102) is slidably mounted on the first bottom plate (101), and an upper shell (103) is hingedly mounted on the lower shell (102). A spray plate (104) is mounted inside the upper shell (103), and spray heads (105) are obliquely mounted on both ends of the spray plate (104). A connecting plate (106) is fixedly mounted on one side of the spray plate (104), and a spray head (107) is obliquely mounted on one side of the connecting plate (106).

2. The automatic sandblasting and spraying equipment for the threaded end of oil casing according to claim 1 is characterized in that: First electric slide rails (1014) are fixedly mounted on both sides of the upper end of the first base plate (101), the lower end of the lower shell (102) is fixedly mounted on the movable end of the first electric slide rail (1014), the lower shell (102) and the upper shell (103) are hingedly connected by hinges, and a lock (108) is fixedly mounted on the other side of the lower shell (102) and the upper shell (103), and a first exhaust pipe (109) is fixedly mounted on one side of the upper end of the upper shell (103).

3. The automatic sandblasting and spraying equipment for the threaded end of oil casing according to claim 1, characterized in that: A first through hole (1010) is provided on one side of the upper shell (103) and the lower shell (102) close to the lifting assembly (6); a first laser sensor (1011) is fixedly installed on the lower shell (102) below the first through hole (1010); a collecting box (1012) is plugged into one side of the lower shell (102); and a composite hard tube (1013) is fixedly installed on the upper end of the upper shell (103); the interior of the composite hard tube (1013) is a composite of an air supply pipe and a paint supply pipe, and the spray head (105) and the air jet head (107) are both connected to the composite hard tube (1013).

4. The automatic sandblasting and spraying equipment for the threaded end of oil casing according to claim 1, characterized in that: The sandblasting assembly (2) comprises a second base plate (201), a collecting bin (202) is slidably mounted on the second base plate (201), a sandblasting box (203) is mounted inside the collecting bin (202), a second through hole (204) is provided on a side of the sandblasting box (203) close to the lifting assembly (6), and a sandblasting tube (205) is fixedly mounted on the upper end of the sandblasting box (203).

5. The automatic sandblasting and spraying equipment for the threaded end of oil casing according to claim 4, characterized in that: Second electric slide rails (206) are fixedly mounted on both sides of the upper end of the second bottom plate (201), the collecting bin (202) is mounted on the movable end of the second electric slide rails (206), and a second air extraction pipe (207) is fixedly mounted on one side of the upper end of the sandblasting box (203).

6. The automatic sandblasting and spraying equipment for oil casing thread ends according to claim 1, characterized in that: A second laser sensor (8) is fixedly mounted on the lifting assembly (6) located on the second mounting rail (4) near the sandblasting assembly (2). The conveying assembly (5) includes a fixed frame (501), and a conveying roller (502) with a concave structure is rotatably mounted between the upper ends of the fixed frame (501).

7. A method for using an automatic sandblasting and spraying device for threaded ends of oil casing, characterized in that: The automatic sandblasting and spraying equipment for the threaded end of oil casing according to any one of claims 1 to 6 is applicable, and the specific steps are as follows: Step 1: transporting the oil casing that needs to have its threaded end processed onto the second mounting rail (4) and pushing it forward, so that the oil casing moves along the transport assembly (5); Step 2: After the oil casing is moved into position, the lifting assembly (6) on the second mounting rail (4) lifts the oil casing and drives the oil casing, causing the oil casing to rotate. Step 3: Turn on the sandblasting assembly (2), and the sandblasting assembly (2) sandblasts and polishes the threaded end of the oil casing; Step 4: After the grinding is completed, the working end of the sandblasting assembly (2) is retracted, and the lifting assembly (6) guides the oil casing to one side, and the oil casing falls on the guide assembly (7) and moves along the guide assembly (7) to the position of the first mounting rail (3); Step 5: The lifting assembly (6) on the first mounting rail (3) lifts the oil casing and causes the oil casing to rotate, the lower shell (102) in the spray assembly (1) moves, and the threaded end of the oil casing is located below the spray plate (104). The threaded end is first cleaned by the spray head (107), and then the spray head (105) sprays primer or powder coating on the threaded end of the oil casing; Step 6: After spraying is completed, the spraying end of the spraying component (1) retracts, and the lifting component (6) pushes the oil casing downward at an angle, and the oil casing falls on the guide component (7), and is stacked by the guide component (7) to complete the processing.

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