Round pipe and square pipe grinding device

Abstract

The utility model belongs to the technical field of polishing devices, and particularly relates to a round pipe and square pipe polishing device which comprises a workbench, a conveying mechanism and a polishing mechanism, the grinding mechanism comprises a coarse grinding head and a fine grinding head, a driving motor of the coarse grinding head and a driving motor of the fine grinding head are independent, and the surface of the coarse grinding head and the surface of the fine grinding head abut against the surface of the steel pipe in a stressed mode to achieve grinding. The conveying mechanism conveys a steel pipe, through the arranged rough grinding head and the arranged fine grinding head, in the grinding process, the rough grinding head is firstly used for pretreatment, then the fine grinding head is used for refined grinding, and the grinding efficiency is improved. The rough grinding head and the fine grinding head are matched to achieve graded grinding of burrs or rust of different sizes on the surface of the same steel pipe, the grinding efficiency is improved, grinding is accurate, and the effect of protecting the grinding heads is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of grinding devices, specifically relating to a grinding device for round tubes and square tubes. Background Technology

[0002] Due to the inherent properties of steel pipe material, applying an anti-corrosion coating to the surface is the most effective way to prevent pipe corrosion and thus extend pipe life. Before coating, the steel pipe surface must be derusted to improve the adhesion between the anti-corrosion layer and the pipe surface, minimizing the risk of cracking and peeling.

[0003] Grinding the outer surface of round and square tubes is a crucial process that directly affects the final product quality and appearance. However, existing grinding equipment typically uses grinding heads with fixed parameters, making it difficult to flexibly adjust the grinding force and depth according to different conditions of the steel pipe surface, such as burrs or rust of different sizes. This results in inconsistent grinding accuracy, and over-grinding or under-grinding also occurs frequently, further impacting production efficiency and product quality.

[0004] How to improve grinding equipment and enhance grinding results has become an urgent problem to be solved in the current industrial manufacturing field. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a grinding device for round and square tubes, which solves the problem that the grinding head cannot accurately grind burrs of different sizes on the surface of the steel tube under the existing technology.

[0006] The purpose of this utility model can be achieved through the following technical solution: a grinding device for round and square tubes, including a worktable and a grinding mechanism set on the worktable, wherein the grinding mechanism includes n sets of grinding heads arranged in sequence, and the n sets of grinding heads grind the surface of the steel tube from coarse to fine in sequence.

[0007] It also includes a conveying mechanism mounted on the workbench;

[0008] The n-group of grinding heads includes a coarse grinding head and a fine grinding head, the surfaces of which are respectively subjected to force and contact with the surface of the steel pipe for grinding;

[0009] The conveying mechanism transports the steel pipes.

[0010] Preferably, the conveying mechanism includes a mounting base, a drive roller rotatably mounted on the mounting base, and a drive motor for driving the drive roller to rotate, with the steel pipe placed between the mounting base and the drive roller.

[0011] Preferably, it also includes a contact sensor and an electric slide rail that pushes the grinding mechanism closer to or further away from the steel pipe. The contact sensor is electrically connected to the electric slide rail and is used to sense the distance between the grinding head and the surface of the steel pipe, and to control the grinding mechanism to move on the slide rail to keep the grinding head and the steel pipe in contact.

[0012] Preferably, it also includes a limiting mechanism, which includes a lifting assembly and a limiting wheel;

[0013] The limiting wheel is mounted on the lifting assembly. The up-and-down movement of the lifting assembly causes the limiting wheel to move closer to and further away from the steel pipe. The limiting wheel is a rubber wheel.

[0014] Preferably, the lifting assembly includes a screw structure and a straight plate. The screw structure includes a fixed base, a screw, and a turntable. The turntable is mounted on the fixed base, and the screw and the turntable are threaded together. The position of the screw relative to the fixed base is adjusted by rotating the turntable. The straight plate is fixedly connected to the screw, and the lifting of the straight plate is achieved by lifting the screw. The limiting wheel is mounted on the straight plate, and the lifting of the straight plate allows the limiting wheel and the steel pipe to move closer or further apart.

[0015] Preferably, the conveying mechanism is equipped with a pressure sensor, which is used to measure the weight of the steel pipe placed on the conveying mechanism. The pressure sensor is connected to the drive motor of the conveying mechanism and adjusts the speed of the drive motor according to the measurement result, thereby controlling the forward speed of the steel pipe.

[0016] The beneficial effects of this utility model are as follows:

[0017] By using coarse and fine grinding heads, the grinding process involves first pre-treating with the coarse head and then refining with the fine head. The combined use of these two heads allows for graded grinding of burrs or rust of different sizes on the same steel pipe surface, improving grinding efficiency and precision while protecting the grinding heads. A contact sensor measures the force on the grinding head and adjusts the contact distance between the grinding head and the steel pipe surface, enabling precise grinding of different types of defects and roughness, and also protecting the grinding head. The screw structure and the straight plate work together to allow the limiting wheel to move closer to or further away from the steel pipe surface, ensuring the limiting mechanism keeps steel pipes of different sizes within a controlled range. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a front view of the present invention;

[0020] Figure 2 This is a top view of the present invention;

[0021] Explanation of main component symbols

[0022] In the diagram: 1. Workbench; 21. Rough grinding head; 22. Fine grinding head; 31. Turntable; 32. Screw; 33. Straight plate; 34. Limit seat; 35. Limit wheel; 41. Belt; 42. Drive roller; 5. Steel pipe; 6. Electric slide rail. Specific Implementation

[0023] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific embodiments, structures, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0024] Please see Figures 1-2 During the use of steel pipe 5, surface oxidation and corrosion are prone to occur, affecting the surface quality and aesthetics of steel pipe 5. Generally, grinding is performed on its surface using a grinding device, which can effectively remove these oxides and rust, improving the surface quality of steel pipe 5. Alternatively, during the production process of steel pipe 5, it is unavoidable to grind burrs on its surface to ensure a smooth surface. Grinding may also be required during the processing of steel pipe 5, such as grinding a thicker steel pipe 5 into a thinner one. This embodiment provides a grinding device for round and square pipes, which can meet the grinding needs of steel pipe 5 in the aforementioned scenarios. The device includes a worktable 1 and a conveying mechanism and a grinding mechanism mounted on the worktable 1. The conveying mechanism transports the steel pipe 5.

[0025] To improve grinding efficiency and quality, given that current grinding devices typically have only one grinding head with a fixed surface roughness of the grinding wheel, a single grinding head is generally required to remove rust or burrs from the steel pipe 5 and also perform polishing tasks. Therefore, the conveying speed of the steel pipe 5 is not very fast. Increasing the conveying speed to improve efficiency would result in a slightly coarser grinding quality. Alternatively, using other mechanisms for finer grinding would increase complexity. Furthermore, directly using a fine grinding head 22 for preliminary grinding could lead to premature wear, increasing costs and potentially damaging the grinding head. Therefore, in order to improve the efficiency and quality of grinding, the grinding mechanism includes n sets of grinding heads arranged in sequence. The n sets of grinding heads grind the surface of the steel pipe 5 from coarse to fine in sequence. The roughness of the n grinding heads is set from coarse to fine in sequence, so as to realize the gradual grinding of the surface of the steel pipe 5 from coarse to fine in the conveying direction of the steel pipe 5, and to achieve precise grinding according to the roughness of the surface of the steel pipe 5.

[0026] n can be adjusted appropriately according to the surface roughness or length of the steel pipe 5 being ground, and the roughness of the grinding wheel surfaces of n grinding heads can be adjusted according to the roughness of the steel pipe 5 that needs to be ground.

[0027] As shown in the figure, this application provides a method for setting up n sets of grinding heads. The n sets of grinding heads include a coarse grinding head 21 and a fine grinding head 22. The coarse grinding head 21 and the fine grinding head 22 achieve coarse grinding and fine grinding by means of the different roughness of the grinding surface of the grinding wheel.

[0028] It also includes drive motors for driving the coarse grinding head 21 and the fine grinding head 22. The surfaces of the coarse grinding head 21 and the fine grinding head 22 are respectively subjected to force and contact with the surface of the steel pipe 5 to achieve grinding. Moreover, the drive motors for the coarse grinding head 21 and the fine grinding head 22 are independent of each other. The coarse grinding head 21 contacts the steel pipe 5 before the fine grinding head 22. In the conveying direction of the conveying mechanism, the coarse grinding head 21 contacts the surface of the steel pipe before the fine grinding head 22. That is, in the grinding process, the coarse grinding head 21 is used for pretreatment first, and then the fine grinding head 22 is used for fine grinding or polishing if necessary. This achieves graded grinding of burrs or rust of different sizes on the surface of the same steel pipe 5, which not only improves grinding efficiency and precision grinding, but also protects the grinding heads.

[0029] In one embodiment, the conveying mechanism includes a mounting base, an active roller 42 rotatably mounted on the mounting base, and a drive motor that drives the active roller 42 to rotate. The rotation of the drive motor is transmitted to the active roller 42 via a belt 41, making the rotation of the active roller 42 smoother. It also includes several guide wheels fixedly mounted on the mounting base, and the guide wheels are all inclined along the length direction of the active roller 42. There is a certain gap between the active roller 42 and the guide wheels for placing the steel pipe 5.

[0030] The steel pipe 5 is placed between the guide wheel and the drive roller 42. When the conveying mechanism is working, the drive motor drives the drive roller 42 to rotate. The rotation of the drive roller 42 causes the steel pipe 5 placed between the drive roller 42 and the guide wheel to move, thus achieving conveying. The inclined design of several guide wheels plays a guiding role, causing the conveying direction of the steel pipe 5 to move. The steel pipe 5 is generally of two types: round and square. The round pipe is placed between the guide wheel and the drive roller 42. The rotation of the drive roller 42 causes the round pipe to rotate and move forward, achieving comprehensive grinding of the side of the round pipe. When the steel pipe 5 is square, because the square pipe is a hollow cuboid column, it has sharp edges. Therefore, when the square steel pipe 5 is placed in this device, the square pipe will not rotate due to the limitation of its cross-section. The conveying mechanism transports it to the grinding mechanism in a translational manner, and the grinding mechanism performs grinding on it. To prevent the position of the steel pipe 5 from deviating, a limiting mechanism is needed to limit it to prevent it from shaking during the conveying process, especially during the grinding process, which could affect the grinding effect or even cause danger.

[0031] Because the steel pipe 5 will move slightly during the transportation process, deviating from the predetermined transportation route, the surface of the steel pipe 5 and the grinding head will lose contact, resulting in inadequate or excessive grinding. Therefore, in one embodiment, a contact sensor and an electric slide rail 6 that pushes the grinding mechanism closer to or further away from the steel pipe 5 are also included. The contact sensor is electrically connected to the electric slide rail 6. The contact sensor is used to sense the distance between the grinding head and the surface of the steel pipe 5 and control the grinding mechanism to move on the slide rail to keep the grinding head and the steel pipe 5 in contact to ensure the grinding head and the surface of the steel pipe 5 are in contact for grinding.

[0032] Furthermore, since the dimensions of the steel pipe 5 being ground are uncertain, the limiting mechanism needs to be adaptable to different dimensions of the steel pipe 5 when restricting the positional relationship between the grinding head and the steel pipe 5.

[0033] Therefore, in one embodiment, a limiting mechanism is also included. The limiting mechanism includes a lifting component and a limiting wheel 35. The limiting wheel 35 is made of rubber material to prevent the limiting mechanism from scratching the surface of the steel pipe 5 when limiting the steel pipe 5. Moreover, the surface of the limiting wheel 35 made of rubber material will undergo relative deformation, so that the limiting effect is improved by the deformation of the limiting wheel 35 itself when it is squeezed and limited.

[0034] The lifting assembly includes a limiting seat 34, a screw 32 structure, and a straight plate 33. The screw 32 structure and the limiting seat 34 are arranged in parallel. The screw 32 structure includes a fixed seat and a screw 32. A turntable 31 is fixedly mounted on the fixed seat. The turntable 31 and the screw 32 are threadedly slidably connected. The straight plate 33 is slidably connected to the limiting seat 34. The straight plate 33 is fixedly mounted on the screw 32 through an installation structure. Several limiting wheels 35 are connected to the straight plate 33 through an L-shaped connection structure. By rotating the turntable 31, the screw 32 moves up and down relative to the fixed seat. By rotating the turntable 31, the position of the screw 32 relative to the fixed seat is adjusted. The straight plate 33 is fixedly connected to the screw 32. The lifting and lowering of the screw 32 realizes the lifting and lowering of the straight plate 33. The limiting wheels 35 are mounted on the straight plate 33. The lifting and lowering of the straight plate 33 realizes the mutual approach or distance between the limiting wheels 35 and the steel pipe 5, thereby realizing the limiting adjustment between steel pipes 5 of different sizes. The limiting seat 34 is designed to increase the stability of the straight plate 33 itself. The straight plate 33 is provided with several threaded holes, and the limiting seat 34 is provided with threaded holes that cooperate with the straight plate 33. When the screw 32 moves up and down to a fixed height, the threaded holes between the limiting seat 34 and the straight plate 33 are tightened by screwing the nut to further limit the position of the straight plate 33.

[0035] Before grinding the steel pipe 5, the screw 32 is rotated by rotating the turntable 31 according to the size of the steel pipe 5, which moves the straight plate 33 up and down, thereby adjusting the up and down position of the limiting wheel 35, so that the limiting wheel 35 and the surface of the steel pipe 5 are in contact. The position of the limiting wheel 35 is adjusted according to the size of the steel pipe 5 by moving the lifting component up and down, so that the limiting wheel 35 always keeps in contact with the surface of the steel pipe 5, thus achieving the limiting function. Moreover, when the drive roller 42 drives the steel pipe 5 forward, the limiting wheel 35 will rotate relative to the L-shaped structure, so the limiting wheel 35 itself has a certain guiding function, realizing the cooperation with the drive roller 42.

[0036] In one embodiment, since the surface of the same steel pipe 5 may have different types of defects and roughness, such as large particles of impurities, deep scratches, or burrs of varying sizes, a contact sensor is included to ensure constant force contact between the grinding head and the surface of the steel pipe 5 for uniform grinding. The contact sensor is electrically connected to the electric slide rail 6. The contact sensor is used to sense the force on the grinding head and control the slider to move on the slide rail, thereby controlling the position of the grinding head relative to the steel pipe 5 to achieve constant force grinding. Based on the measured pressure data, the contact sensor can assess the current contact condition between the grinding head and the surface of the steel pipe 5. If a large pressure fluctuation is detected, it indicates that a large defect or burr may have been encountered, and corresponding adjustments are needed to achieve constant force grinding. Similarly, a contact sensor can also be set on the fine grinding head 22 to achieve real-time control of the position of the grinding head and the surface of the steel pipe 5.

[0037] In one embodiment, because a heavier steel pipe 5 may not be sufficiently polished or have an uneven surface quality when passing through the grinding head at the same speed due to its greater inertia, while a lighter steel pipe 5 is prone to over-polishing or localized overheating, a pressure sensor is installed on the conveying mechanism. The pressure sensor is used to measure the weight of the steel pipe 5 placed on the conveying mechanism. The pressure sensor is connected to the drive motor of the conveying mechanism and adjusts the speed of the drive motor according to the measurement results, thereby controlling the forward speed of the steel pipe 5 to ensure the quality of polishing.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A grinding device for round and square tubes, characterized in that, It includes a workbench and a grinding mechanism set on the workbench. The grinding mechanism includes n sets of grinding heads arranged in sequence, and the n sets of grinding heads grind the surface of the steel pipe from coarse to fine in sequence.

2. The grinding device for round and square tubes according to claim 1, characterized in that, It also includes a conveying mechanism mounted on the workbench; The n-group of grinding heads includes a coarse grinding head and a fine grinding head, the surfaces of which are respectively subjected to force and contact with the surface of the steel pipe for grinding; The conveying mechanism transports the steel pipes.

3. The grinding device for round and square tubes according to claim 2, characterized in that, The conveying mechanism includes a mounting base, a drive roller rotatably mounted on the mounting base, and a drive motor that drives the drive roller to rotate. The steel pipe is placed between the mounting base and the drive roller.

4. The grinding device for round and square tubes according to claim 2, characterized in that, It also includes a contact sensor and an electric slide rail that pushes the grinding mechanism closer to or further away from the steel pipe. The contact sensor is electrically connected to the electric slide rail and is used to sense the distance between the grinding head and the surface of the steel pipe, and to control the grinding mechanism to move on the slide rail to keep the grinding head and the steel pipe in contact.

5. The grinding device for round and square tubes according to claim 2, characterized in that, It also includes a limiting mechanism, which comprises a lifting assembly and a limiting wheel; The limiting wheel is mounted on the lifting assembly. The up-and-down movement of the lifting assembly causes the limiting wheel to move closer to and further away from the steel pipe. The limiting wheel is a rubber wheel.

6. The grinding device for round and square tubes according to claim 5, characterized in that, The lifting assembly includes a screw structure and a straight plate. The screw structure includes a fixed base, a screw, and a turntable. The turntable is mounted on the fixed base, and the screw and the turntable are threaded together. The position of the screw relative to the fixed base is adjusted by rotating the turntable. The straight plate is fixedly connected to the screw, and the lifting of the straight plate is achieved by lifting the screw. The limiting wheel is mounted on the straight plate, and the lifting of the straight plate allows the limiting wheel to move closer to or further away from the steel pipe.

7. The grinding device for round and square tubes according to claim 2, characterized in that, The conveying mechanism is equipped with a pressure sensor, which is used to measure the weight of the steel pipe placed on the conveying mechanism. The pressure sensor is connected to the drive motor of the conveying mechanism and adjusts the speed of the drive motor according to the measurement result, thereby controlling the forward speed of the steel pipe.

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