Full-automatic polishing and oiling equipment for steel pipe

Abstract

The invention discloses full-automatic polishing and oiling equipment for a steel pipe. Comprising a rack, clamping assemblies are arranged on the two sides, in the advancing direction of a steel pipe, of the rack, the clamping assemblies are used for jointly rotating the steel pipe from the two sides, a grinding assembly is arranged on the portion, in the advancing direction of the steel pipe, of the rack, and a translation assembly is arranged on the portion, in the advancing direction of the steel pipe, of the rack. The translation assembly is used for translating the steel pipe to the transfer assembly, and the transfer assembly is used for transferring the steel pipe to the oiling machine. According to the device, the problems of high operation complexity and poor universality caused by clamping from the two ends in a two-end clamping rotary type polishing and derusting manner can be solved.

Description

Technical Field

[0001] This application relates to the field of metal material surface treatment technology, specifically to a fully automatic steel pipe grinding and oiling equipment. Background Technology

[0002] Steel pipes are widely used as an important component material and transportation pipeline. However, during storage, transportation, and use, steel pipes are exposed to air, humidity, and corrosive media, causing their outer surface to easily oxidize and form rust. Rust not only affects the appearance of steel pipes but also significantly reduces their mechanical properties, corrosion resistance, and service life, posing a serious threat to safe production. Therefore, effective rust removal treatment before putting steel pipes into use or during regular maintenance is an indispensable procedure.

[0003] Currently, the most widely used and relatively mature method for rust removal from the outer walls of steel pipes is rotary grinding with clamps at both ends. The basic principle of this technique is as follows: a drive unit uses two chucks to clamp and fix the steel pipe from both ends. One chuck is the driving end, providing rotational power and driving the pipe to rotate uniformly around its own axis; the other is the driven end, providing auxiliary support and centering. While the pipe rotates, a robotic arm controls a grinding tool to approach the outer wall of the pipe, using the friction generated by the relative motion to remove rust.

[0004] Although this technical solution can achieve rust removal within a certain application range, long-term practical testing in the field has revealed that its need for clamping from both ends leads to several problems of high operational complexity and poor versatility, severely restricting production efficiency and applicability. Specifically: For each steel pipe to be processed, the positions of the chucks at both ends must be precisely adjusted to ensure that the pipe is firmly clamped and its axis coincides with the main shaft of the equipment. This process often requires repeated fine-tuning. For longer steel pipes, centering is particularly difficult, and this method is also unsuitable for ultra-short fittings or clamps due to insufficient clamping length. The clamping force also needs to be precisely controlled. If the clamping is too loose, the steel pipe may slip or vibrate during high-speed rotation, affecting the grinding quality and even causing safety accidents; if the clamping is too tight, it may cause mechanical damage to the ends of the steel pipe, especially for thin-walled steel pipes, where the risk is even higher. Frequent adjustments to the distance between the two ends of the equipment are required for steel pipes of different specifications and lengths, making rapid, continuous assembly line operations impossible.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present invention, and therefore may include information that does not constitute prior art. Application content

[0006] To address the shortcomings of existing technologies, this application discloses a fully automatic steel pipe grinding and oiling equipment, which can solve the problems of high operational complexity and poor versatility caused by the need for clamping from both ends in the rotary grinding and rust removal method.

[0007] To achieve the above objectives, this application provides the following technical solution: The fully automatic steel pipe grinding and oiling equipment includes a frame, with clamping assemblies on both sides of the frame in the direction of steel pipe travel. The clamping assemblies are used to rotate the steel pipe from both sides. A grinding assembly is located above the frame in the direction of steel pipe travel, and a translation assembly is located below the frame in the direction of steel pipe travel. The equipment also includes a transfer assembly and an oiling machine. The translation assembly is used to transfer the steel pipe to the transfer assembly, and the transfer assembly is used to transfer the steel pipe to the oiling machine.

[0008] In a preferred embodiment, the clamping assembly includes a first rotating component rotatably disposed on one side of the frame in the direction of the steel pipe's advance, and a second rotating component rotatably disposed on the other side of the frame in the direction of the steel pipe's advance. The first rotating component is connected to a first motor.

[0009] In a further preferred embodiment, the first rotating component is configured as a driving wheel, and a plurality of driving wheels are spaced apart along the forward direction of the parallel steel pipe; the second rotating component is configured as a driven wheel, and a plurality of driven wheels are spaced apart along the forward direction of the parallel steel pipe.

[0010] In a preferred embodiment, the polishing assembly includes a polishing frame, a polishing wheel is provided on the polishing frame, a second motor is driven to the polishing wheel, a first cylinder is rotatably connected to the polishing frame, and the other end of the first cylinder is rotatably connected to the polishing wheel.

[0011] A further preferred technical solution is that a third motor is fixedly connected to the grinding frame, a first gear is driven to the output end of the third motor, and a first rack is provided on the frame extending along the direction of the parallel steel pipe, with the first gear and the first rack meshing.

[0012] In a further preferred embodiment, the translation component includes a translation frame, a fourth motor is fixedly connected to the translation frame, a second gear is drivenly connected to the output end of the fourth motor, and a second rack extending perpendicular to the forward direction of the steel pipe is provided on the frame, with the second gear and the second rack meshing.

[0013] In a preferred embodiment, a lifting cylinder is fixedly connected to the translation frame, and a first support member and a second support member are fixedly connected to the lifting cylinder.

[0014] In a preferred embodiment, the transfer assembly includes a third rotating component, which is connected to a fifth motor, and multiple third rotating components are spaced apart along the forward direction of the parallel steel pipe.

[0015] This application discloses a fully automatic steel pipe grinding and oiling equipment, which has the following advantages: This application adopts a two-sided support drive principle, which only requires hoisting or rolling the steel pipe into the support area formed by the driving wheel and the driven wheel to complete the feeding process. It eliminates the need for a series of complicated steps such as end-to-end alignment, center adjustment, and locking that are required in traditional two-end clamping methods. This reduces the feeding preparation time for a single steel pipe by more than 70%, greatly improving the production rhythm of a single piece of equipment.

[0016] The clamping assembly of this invention is supported by multiple sets of wheels, with the support points distributed in the middle of the steel pipe. Therefore, its applicability is not limited by the length of the steel pipe. Whether it is a short pipe clamp or an extra-long pipe, as long as it can be supported and driven to rotate, it can be handled. At the same time, the same set of wheels can adapt to a certain range of pipe diameter changes, and the handling range can be further expanded by changing the sets of wheels, achieving wide pipe diameter compatibility.

[0017] By combining the uniform rotation of the steel pipe with the precise axial servo feed of the grinding components, a 360° spiral grinding trajectory is formed on the entire outer surface of the steel pipe, eliminating blind spots. This automated mode completely eliminates problems such as missed grinding and uneven grinding caused by fatigue or negligence, ensuring that every inch of rust layer is effectively removed. Adaptive clamping ensures that the grinding wheel maintains a constant contact pressure on steel pipes of different diameters, avoiding the impact of pressure fluctuations on grinding results and equipment lifespan. Compared to the erratic nature of existing grinding methods, the output quality of this equipment is stable and predictable.

[0018] The ingenious design of the translation component allows it to simultaneously complete the two actions of removing the ground steel pipe and feeding in the new steel pipe in a single reciprocating motion. This parallel operation mode minimizes equipment idle time, maximizes equipment utilization, and more than doubles overall production efficiency compared to the traditional single-piece flow mode. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0020] Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of an embodiment of this application; Figure 2 This is a schematic diagram of the clamping component in an embodiment of this application; Figure 3 This is a schematic diagram of the polishing component in an embodiment of this application; Figure 4 This is a schematic diagram of the translation component in an embodiment of this application; Figure 5 This is a schematic diagram of the transfer component in an embodiment of this application. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0023] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] like Figures 1 to 5 As shown, the fully automatic steel pipe grinding and oiling equipment described in this application includes a frame 1, which serves as the supporting structure for the entire equipment. It is constructed from welded steel sections and possesses sufficient rigidity and stability. An internal passage for the steel pipe P is formed within the frame 1, with its length defined as the forward direction of the steel pipe P. The clamping assembly 2 is positioned on both sides of the frame 1 along the forward direction of the steel pipe P. Its core function is to support and drive the steel pipe P to rotate around its own axis from both sides. The grinding assembly 3 is positioned above the frame 1 and can perform all-around, automated grinding and rust removal on the outer surface of the steel pipe P, which is driven to rotate by the clamping assembly 2. The translation assembly 4 is positioned below the frame 1 and its function is to smoothly remove the steel pipe P from the clamping station after grinding and transfer it to the subsequent transfer assembly 5. The transfer assembly 5 is connected to one side of the clamping assembly 2 and is used to receive the ground steel pipe P from the translation assembly 4 and transport it to the oiling machine 6. The oiling machine 6 is located at the end of the transfer assembly 5 and is used to uniformly spray anti-rust oil onto the outer surface of the passed, already polished steel pipe P to form a protective film. The entire process is fully automated and requires no manual intervention. The steel pipe P enters the equipment, is supported and rotated by the clamping assembly 2, and is simultaneously polished axially by the grinding assembly 3. After polishing, the translation assembly 4 lifts the steel pipe P away from the clamping assembly 2 and moves it laterally to the transfer assembly 5. The transfer assembly 5 feeds the steel pipe P into the oiling machine 6 for oiling, and finally, the oiled steel pipe P is output.

[0025] The clamping assembly 2 described in this application is one of the core components of this invention, achieving high versatility and convenience. It includes a first rotating member 21 rotatably mounted on one side of the frame in the direction of travel of the steel pipe P, and a second rotating member 22 rotatably mounted on the other side. The first rotating member 21 is rotatably mounted on the frame 1 via a bearing seat and is connected to a first motor. In this embodiment, the first rotating member 21 is specifically implemented as a driving wheel. To provide a stable and uniform driving force and prevent the steel pipe P from bending, multiple driving wheels 21 are provided, arranged at intervals parallel to the direction of travel of the steel pipe P. All driving wheels 21 can be linked to the first motor via a single drive shaft, or each driving wheel can be independently configured with a motor for synchronous driving, to better accommodate slight bending of the steel pipe P. The second rotating member 22 is also rotatably mounted on the frame 1 via a bearing seat. In this embodiment, the second rotating member 22 is specifically implemented as a driven wheel. Correspondingly, multiple driven wheels 22 are provided in equal number and corresponding positions to the driving wheels 21. The driven wheels 22 themselves are not powered.

[0026] Its working principle is as follows: The steel pipe P to be processed is placed within a V-shaped or U-shaped support area formed by the driving wheels 21 and driven wheels 22 on both sides. The first motor drives all the driving wheels 21 to rotate synchronously in the same direction. The driving wheels 21 drive the steel pipe P to rotate around its own axis through the friction between themselves and the outer surface of the steel pipe P. At the same time, the driven wheel 22 on the other side is passively rotated under the influence of the steel pipe P, playing a role in auxiliary support and centering.

[0027] To further expand its adaptability, the driving wheel 21 and driven wheel 22 can be designed for quick disassembly and replacement. For example, via flange or key connections, operators can easily replace wheel sets with different groove depths, groove shapes, or diameters to accommodate smaller or larger pipe diameters, or even irregularly shaped cross-sections. This solution is completely unaffected by the condition of the steel pipe ends. Even if one or both ends are blocked, welded, or severely damaged, as long as there is an intact surface in the middle for support and drive, it can be processed, which is impossible with traditional end-clamping methods.

[0028] The grinding assembly 3 described in this application includes a grinding frame 31. A grinding wheel 32 is mounted on the grinding frame 31. The grinding wheel 32 is driven by a second motor 33, which rotates it at high speed to provide the cutting speed required for grinding. To achieve adaptive clamping grinding of steel pipes with different diameters, a first cylinder 34, or other linear drive mechanism such as an electric push rod or hydraulic cylinder, is rotatably connected to the grinding frame 31 via a hinge point. The piston rod end of the first cylinder 34 is also rotatably connected to the mounting seat of the grinding wheel 32 via a hinge point. By extending and retracting the first cylinder 34, the entire grinding wheel 32 can be forced to swing around its main rotation point on the grinding frame 31, thereby achieving the feeding and retraction of the grinding wheel 32. This ensures that it maintains a constant and appropriate pressure against the outer surface of steel pipes P of different diameters, ensuring uniform grinding results and avoiding insufficient pressure leading to incomplete rust removal or excessive pressure leading to equipment overload.

[0029] To achieve reciprocating motion of the grinding head along the axial direction of the steel pipe and realize full-length grinding, a third motor 35 is fixedly installed on the grinding frame 31. A first gear 36 is driven and connected to the output end of the third motor 35. Correspondingly, a first rack 37 extending parallel to the forward direction of the steel pipe is fixedly installed on the frame 1. The first gear 36 and the first rack 37 mesh with each other. When the third motor 35 is working, it drives the first gear 36 to rotate. Since the first rack 37 is stationary, the combination of the gear and rack converts the rotational motion into linear motion, thereby driving the entire grinding frame 31 and its components, including the grinding wheel 32, the second motor 33, and the first cylinder 34, to move together along the axial direction of the steel pipe P. A drive assembly that moves in the vertical direction can also be installed, which will not be described in detail here.

[0030] The translation component 4 described in this application is key to enabling continuous, assembly-line operation of the equipment. It includes a laterally movable translation frame 41. A fourth motor 42 is fixedly mounted on the translation frame 41, and the output end of the fourth motor 42 is driven by a second gear 43. A second rack 44 extending perpendicular to the forward direction of the steel pipe is fixedly mounted on the frame 1. The second gear 43 meshes with the second rack 44, forming a translation drive mechanism. A lifting cylinder 45 is also fixedly mounted on the translation frame 41; a pneumatic cylinder or an electric lifting mechanism can also be used. A combined support member is fixedly connected to the top of the piston rod of the lifting cylinder 45, and this support member includes a first support member 46 and a second support member 47.

[0031] The working process is as follows: After a steel pipe P is finished being ground, its rotation is paused. The lifting cylinder 45 drives the first support 46 and the second support 47 to rise together. The second support 47 first contacts and lifts the ground steel pipe P, disengaging it from the driving wheel 21 and driven wheel 22 on both sides. The fourth motor 42 starts, driving the second gear 43 to roll along the second rack 44, moving the entire translation frame 41 and the lifted steel pipe P laterally from the initial position to the working position, i.e., above the transfer assembly 5. At the same time, the new steel pipe P, originally placed on the first support 46, is also synchronously moved to directly above the clamping station. After reaching the working position, the lifting cylinder 45 descends, completing two actions: first, smoothly placing the ground steel pipe P onto the transfer assembly 5; second, accurately placing the new steel pipe P into the support area of ​​the clamping assembly 2, which has stopped rotating. Subsequently, the fourth motor 42 reverses, driving the translation frame 41 to return to the initial position unloaded, ready to start the next cycle.

[0032] The transfer assembly described in this application includes multiple third rotating members 51 spaced apart parallel to the forward direction of the steel pipe. Each third rotating member 51 is connected to a fifth motor 52. In this embodiment, the third rotating member 51 is preferably a V-shaped wheel, whose V-groove effectively restricts the position of the steel pipe, ensuring stable transport. When the translation assembly 4 places the polished steel pipe P onto the V-shaped wheel, the fifth motor 52 drives all V-shaped wheels to rotate synchronously, using friction to smoothly feed the steel pipe P into the oiling machine 6. The oiling machine 6 is a conventional device in the art, equipped with an array of spray nozzles. When the steel pipe P passes through, the nozzles uniformly atomize and spray rust-preventive oil onto its outer surface. After oiling, the steel pipe P can be transported to a temporary storage area or warehouse by a subsequent chain conveyor. Finally, a bridge crane or other equipment can lift the processed steel pipe to a designated workstation.

[0033] It should be noted that, in this document, relational terms are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A fully automatic steel pipe grinding and oiling equipment, comprising a frame, wherein clamping assemblies are provided on both sides of the frame in the direction of steel pipe travel, the clamping assemblies being used to rotate the steel pipe from both sides, a grinding assembly is provided above the frame in the direction of steel pipe travel, and a translation assembly is provided below the frame in the direction of steel pipe travel, and further comprising a transfer assembly and an oiling machine, wherein the translation assembly is used to transfer the steel pipe to the transfer assembly, and the transfer assembly is used to transfer the steel pipe to the oiling machine.

2. The fully automatic steel pipe grinding and oiling equipment according to claim 1, wherein, The clamping assembly includes a first rotating member rotatably disposed on one side of the frame in the direction of the steel pipe's advance, and a second rotating member rotatably disposed on the other side of the frame in the direction of the steel pipe's advance. The first rotating member is drivenly connected to a first motor.

3. The fully automatic steel pipe grinding and oiling equipment according to claim 2, wherein, The first rotating component is configured as a driving wheel, and a plurality of driving wheels are spaced apart along the forward direction of the parallel steel pipe. The second rotating component is configured as a driven wheel, and a plurality of driven wheels are spaced apart along the forward direction of the parallel steel pipe.

4. The fully automatic steel pipe grinding and oiling equipment according to claim 1, wherein, The polishing assembly includes a polishing frame, a polishing wheel is provided on the polishing frame, a second motor is driven to the polishing wheel, a first cylinder is rotatably connected to the polishing frame, and the other end of the first cylinder is rotatably connected to the polishing wheel.

5. The fully automatic steel pipe grinding and oiling equipment according to claim 4, wherein, A third motor is fixedly connected to the grinding frame, and a first gear is driven to the output end of the third motor. A first rack extending along the direction of the parallel steel pipe is provided on the frame, and the first gear and the first rack mesh.

6. The fully automatic steel pipe grinding and oiling equipment according to claim 1, wherein, The translation component includes a translation frame, a fourth motor is fixedly connected to the translation frame, a second gear is driven to the output end of the fourth motor, and a second rack extending perpendicular to the forward direction of the steel pipe is provided on the frame, with the second gear and the second rack meshing.

7. The fully automatic steel pipe grinding and oiling equipment according to claim 6, wherein, A lifting cylinder is fixedly connected to the translation frame, and a first support member and a second support member are fixedly connected to the lifting cylinder.

8. The fully automatic steel pipe grinding and oiling equipment according to claim 1, wherein, The transfer assembly includes a third rotating component, which is connected to a fifth motor. Multiple third rotating components are spaced apart along the forward direction of the parallel steel pipe.

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