Outer surface burr grinding equipment for pipe fitting machining

Abstract

The invention relates to the technical field of pipe fitting machining, in particular to outer surface burr grinding equipment for pipe fitting machining, the outer surface burr grinding equipment for pipe fitting machining comprises a working support and a grinding mechanism, and the grinding mechanism comprises a rotating support, a support driving device and a plurality of floating grinding assemblies. The rotating support is rotatably arranged on the working support, and the support driving device is used for driving the rotating support to rotate; each floating polishing assembly comprises a sliding seat which is in sliding connection with the rotating bracket; the swing frame is hinged to the sliding seat; the grinding motor is arranged on the swing frame; the mounting disc is connected with an output shaft of the grinding motor; and the multiple elastic grinding units are arranged in the circumferential direction of the mounting disc, each elastic grinding unit is elastically connected with the mounting disc, the outer surface burr grinding equipment for pipe fitting machining can effectively adapt to the irregular condition of the surface of a pipe fitting, and the grinding uniformity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipe fitting processing, in particular to an outer surface burr grinding device for pipe fitting processing. Background Art

[0002] In pipeline manufacturing, chemical industry, petroleum and other industries, grinding of pipe surface is an important process. The quality of pipe surface grinding directly affects the subsequent anti-corrosion, sealing and other performances. Since pipe surface usually has irregular conditions such as welds, rust protrusions, etc., how to ensure the uniformity of grinding quality has become the main technical problem in this field.

[0003] In the prior art, pipe surface grinding usually adopts handheld grinding equipment or fixed grinding device. Although handheld grinding equipment is flexible to operate, it has disadvantages such as low work efficiency and the grinding quality depends on the experience of the operator. Although fixed grinding devices can improve work efficiency, due to their relatively rigid grinding structure, they are difficult to adapt to the irregular conditions of the pipe surface, resulting in uneven grinding quality. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a device for grinding burrs on the outer surface of pipe fittings, which can effectively adapt to the irregular conditions of the pipe fitting surface and improve the uniformity of grinding.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, an embodiment of the present application provides an outer surface burr grinding device for pipe processing, including: a working bracket; a grinding mechanism, the grinding mechanism including: a rotating bracket, the rotating bracket is rotatably arranged on the working bracket and can rotate around its central axis; a bracket driving device, the bracket driving device is used to drive the rotating bracket to rotate; a plurality of floating grinding assemblies, the plurality of floating grinding assemblies are arranged along the circumference of the rotating bracket; each floating grinding assembly includes: a sliding seat, the sliding seat is slidably connected to the rotating bracket; a swing frame, the swing frame is hinged to the sliding seat; a grinding motor, the grinding motor is arranged on the swing frame; a mounting plate, the mounting plate is connected to the output shaft of the grinding motor; a plurality of elastic grinding units, the plurality of elastic grinding units are arranged along the circumference of the mounting plate, and each elastic grinding unit is elastically connected to the mounting plate.

[0008] In a possible implementation, the sliding seat is slidably connected to the rotating bracket via an inclined guide groove, and an extending direction of the inclined guide groove forms a preset angle with a radial direction of the rotating bracket.

[0009] In a possible implementation, the preset angle is 15°-30°.

[0010] In a possible implementation, the swing frame is hinged to the sliding seat via a hinge shaft, and further includes: a torsion spring, which is sleeved on the hinge shaft, and two ends of the torsion spring are respectively connected to the swing frame and the sliding seat.

[0011] In a possible implementation, a limiting boss is provided on the swing frame, and the limiting boss cooperates with the sliding seat to limit the swing angle of the swing frame.

[0012] In one possible implementation, each elastic grinding unit includes: a support plate; a plurality of elastic columns arranged in a ring array, one end of each elastic column is connected to the support plate, and the other end is connected to the mounting plate; and a grinding block, which is arranged on the support plate.

[0013] In a possible implementation, the spacing between adjacent grinding blocks is smaller than the width of the maximum burr on the surface of the pipe to be processed.

[0014] In a possible implementation, a displacement detection device is also included, which includes: a displacement sensor, which is arranged on a sliding seat; a controller, which is electrically connected to the displacement sensor and the bracket driving device, and is used to adjust the rotation speed of the rotating bracket according to the displacement of the sliding seat detected by the displacement sensor.

[0015] In a possible implementation, the ratio of the rotation speed of the grinding motor to the rotation speed of the rotating bracket is 50:1-100:1.

[0016] In a possible implementation, a collector ring assembly is also included, which includes: a stationary contact ring fixed on the working bracket; a moving contact ring that is in electrical contact with the stationary contact ring and fixed on the rotating bracket; and the moving contact ring is electrically connected to each grinding motor.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides a burr grinding device for the outer surface of pipe fittings, which has the following beneficial effects: the burr grinding device for the outer surface of pipe fittings forms a three-level adaptive adjustment mechanism through the rotation movement of the rotating bracket and the radial displacement, angle swing and local pressure adjustment of the floating grinding assembly. When grinding the flange surface of a large-diameter pipe, the rotation of the rotating bracket ensures that the grinding tool can completely cover the entire annular area, avoiding the local omission caused by traditional fixed grinding. The sliding seat in each floating grinding assembly can move radially along the rotating bracket, so that the grinding tool can adapt to pipes of different diameters, which significantly improves the application range of the equipment. The hinged design of the swing frame and the sliding seat enables the grinding tool to automatically adjust the angle according to the surface condition, especially when grinding irregular areas such as weld protrusions, it can maintain the best contact state. The multiple elastic grinding units arranged on the mounting plate further refine the accuracy of pressure adjustment. Even when local concave and convex appear at the same circumferential position, the adjacent grinding units can independently adjust the pressure to ensure the uniformity of the grinding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of an outer surface burr grinding device for pipe processing provided in an embodiment of the present application is shown.

[0020] Figure 2 A schematic structural diagram of a grinding mechanism provided in an embodiment of the present application is shown.

[0021] Figure 3 Show Figure 2 Schematic diagram of the local enlarged structure at A.

[0022] Figure 4 A schematic diagram of the planar structure of a grinding mechanism provided in an embodiment of the present application when viewed from above is shown.

[0023] Figure 5 A schematic diagram of the planar structure of a mounting plate and an elastic polishing unit provided in an embodiment of the present application is shown.

[0024] Figure 6 A control relationship diagram of a displacement detection device and a bracket driving device provided in an embodiment of the present application is shown.

[0025] Markings in the accompanying drawings:

[0026] 1. Working bracket;

[0027] 2. grinding mechanism; 21. rotating bracket; 211. inclined guide groove; 22. bracket driving device; 23. floating grinding assembly; 231. sliding seat; 232. swing frame; 2321. limiting boss; 233. grinding motor; 234. mounting plate; 235. elastic grinding unit; 2351. supporting plate; 2352. elastic column; 2353. grinding block; 236. torsion spring;

[0028] 3. displacement detection device; 31. displacement sensor; 32. controller;

[0029] 4. Collector ring assembly; 41. Static contact ring; 42. Moving contact ring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 6 The embodiment of the present application provides a device for grinding burrs on the outer surface of a pipe fitting, comprising: a working support 1 and a grinding mechanism 2, wherein:

[0032] The grinding mechanism 2 includes a rotating bracket 21 , a bracket driving device 22 and a plurality of floating grinding components 23 .

[0033] The rotating bracket 21 is rotatably disposed on the working bracket 1 and can rotate around its central axis.

[0034] The support driving device 22 is used to drive the rotating support 21 to rotate.

[0035] Multiple floating grinding assemblies 23 are arranged along the circumference of the rotating bracket 21; each floating grinding assembly 23 includes: a sliding seat 231, the sliding seat 231 is slidably connected to the rotating bracket 21; a swing frame 232, the swing frame 232 is hinged to the sliding seat 231; a grinding motor 233, the grinding motor 233 is arranged on the swing frame 232; a mounting plate 234, the mounting plate 234 is connected to the output shaft of the grinding motor 233; multiple elastic grinding units 235, multiple elastic grinding units 235 are arranged along the circumference of the mounting plate 234, and each elastic grinding unit 235 is elastically connected to the mounting plate 234. Figure 5 As shown, three elastic grinding units 235 may be provided, and the three elastic grinding units 235 are evenly arranged along the circumference of the mounting plate 234 .

[0036] In the embodiment of the present invention, a complete annular grinding system is formed by setting a rotating bracket 21 and a plurality of floating grinding assemblies 23 thereon. Among them, the rotational movement of the rotating bracket 21 cooperates with the radial displacement, angle swing and local pressure adjustment of the floating grinding assembly 23 to form a three-level adaptive adjustment mechanism. In practical applications, when grinding the flange surface of a large-diameter pipe, the rotation of the rotating bracket 21 ensures that the grinding tool can completely cover the entire annular area, avoiding local omissions caused by traditional fixed grinding. The sliding seat 231 in each floating grinding assembly 23 can move radially along the rotating bracket 21, so that the grinding tool can adapt to pipes of different diameters, significantly improving the scope of application of the equipment. The hinged design of the swing frame 232 and the sliding seat 231 enables the grinding tool to automatically adjust the angle according to the surface condition, especially when grinding irregular areas such as weld protrusions, it can maintain the best contact state. The multiple elastic grinding units 235 provided on the mounting plate 234 further refine the precision of pressure regulation. Even when local unevenness occurs at the same circumferential position, the adjacent grinding units can independently adjust the pressure to ensure the uniformity of grinding quality. This multi-level adaptive adjustment mechanism successfully solves the problems of missed grinding and uneven pressure that traditional grinding equipment is prone to when facing irregular surfaces.

[0037] Specifically, the working bracket 1 is used as the basic support structure, and its form can be a frame type, a column type or a pedestal type structure, as long as it can stably support the rotating bracket 21. The rotating bracket 21 adopts an annular structure and is connected to the working bracket 1 through a bearing. This connection method can be replaced by other rotating pair forms, such as a roller support structure. The core of the floating grinding assembly 23 is to achieve three-level adjustment, in which the sliding seat 231 and the rotating bracket 21 can adopt a slide groove match or a guide pair match; the hinge between the swing frame 232 and the sliding seat 231 can be a bearing match or other rotating pair form; the elastic grinding unit 235 can adopt different elastic elements such as springs and rubber. The installation position of the grinding motor 233 is selected on the swing frame 232. This arrangement shortens the power transmission chain and improves the transmission efficiency. However, it is also possible to consider installing the motor on the sliding seat 231 and drive the installation plate 234 through a transmission mechanism such as a coupling. The overall structure adopts a modular design, and the connection between the functional components adopts a detachable method to facilitate maintenance and replacement.

[0038] like Figure 3 As shown, of course, only one elastic grinding unit 235 can be arranged on the mounting plate 234 .

[0039] In some embodiments, the sliding seat 231 is slidably connected to the rotating bracket 21 via the inclined guide groove 211 , and the extending direction of the inclined guide groove 211 forms a preset angle with the radial direction of the rotating bracket 21 .

[0040] In the embodiment of the present invention, the design of the inclined guide groove 211 is used in actual application scenarios, especially when grinding pipe welds. If the grinding tool only moves radially, radial scratches are easily formed. By setting the guide groove to an inclined state, when the grinding tool is subjected to radial thrust, a tangential motion component will be generated. This composite motion trajectory prevents the grinding points from repeating on the same radial line, but forms a spiral grinding trajectory. For example, when grinding the flange surface of a DN500-caliber pipe, traditional radial motion may form obvious radial scratches at 6-8 positions, but after adopting the inclined guide groove 211, the grinding trajectory is distributed in a grid shape, which significantly improves the surface finish. At the same time, the inclined setting can also increase the lateral movement of the grinding tool, which helps to remove stubborn surface burrs.

[0041] Specifically, the design of the inclined guide groove 211 embodies the principle of motion compounding, and its processing form can be a straight groove or an arc groove, and the wear resistance should be considered in the material selection. The connection with the rotating bracket 21 can adopt a dovetail groove or a T-slot, which are common mechanical sliding guide structures. The surface treatment of the guide groove needs to consider the control of the friction coefficient, and surface strengthening processes such as chrome plating and nitriding can be used, or a slider bushing can be set in the groove.

[0042] Optionally, a guide rail auxiliary structure may be used to achieve a tilting effect on the installation angle of the guide rail; or a dual-axis parallelogram mechanism may be used to achieve compound displacement through mechanism movement.

[0043] In some embodiments, the preset angle is 15°-30°.

[0044] In the embodiment of the present invention, the angle of the inclined guide groove 211 is specifically limited to the range of 15°-30°, and the determination of this numerical range is based on a large amount of practical experience. When the angle is less than 15°, the tangential component generated is small, and it is difficult to form an effective spiral grinding track; when the angle is greater than 30°, although the tangential movement is significant, the radial adjustment ability is weakened, and the movement resistance of the sliding seat 231 will be increased. Through experimental verification, when grinding pipe fittings in the range of DN200-DN800, an inclination angle of about 20° can produce an ideal tangential movement effect while ensuring radial adjustment flexibility. For example, when grinding a DN300 pipe, an inclination angle of 20° can keep the overlap between each grinding point and the adjacent grinding track at about 30%, which ensures complete coverage and avoids over-grinding.

[0045] Specifically, the 15°-30° angle range is determined based on the principle of motion decomposition. The setting of this range needs to consider factors such as friction and motion resistance. In actual processing, the angle can be fine-tuned through an adjustable mounting seat to meet the needs of different working conditions. An alternative to this angle range may be to use an adjustable guide mechanism to achieve different guide angles by adjusting the mechanism.

[0046] In some embodiments, the swing frame 232 is hinged to the sliding seat 231 via a hinge shaft, and further includes: a torsion spring 236, which is sleeved on the hinge shaft, and two ends of the torsion spring 236 are respectively connected to the swing frame 232 and the sliding seat 231.

[0047] In the embodiment of the present invention, a hinged structure with a torsion spring 236 is used between the swing frame 232 and the sliding seat 231. This design has significant advantages in adaptive angle adjustment. When the grinding tool encounters a surface protrusion, the preload force of the torsion spring 236 can ensure that the grinding tool always maintains an appropriate contact pressure. For example, when grinding the circumferential weld of a pipeline, the height of the weld protrusion is usually 2-3mm, and ordinary fixed grinding tools are prone to form steps on the edge of the weld. The swing structure adjusted by the torsion spring 236 can automatically adjust the grinding tool to the optimal working angle to achieve a smooth transition between the weld and the base material. At the same time, the setting of the torsion spring 236 can also prevent the grinding tool from vibrating, thereby improving the processing accuracy and tool life.

[0048] Specifically, the setting of the torsion spring 236 embodies the principle of self-adjustment of the preload force. Its structural form can be a single-turn or multi-turn spiral torsion spring 236, and the material selection needs to consider fatigue strength. The hinge shaft can be supported by a bearing or a self-lubricating sleeve. The end of the torsion spring 236 can be fixed by a slot or a positioning pin, and these connection methods can ensure reliable transmission of torque.

[0049] Optionally, a torsion bar structure may be used to provide a rotational torque through elastic deformation of the material; or a gas spring may be used to achieve torque control through gas pressure regulation.

[0050] In some embodiments, a limiting boss 2321 is provided on the swing frame 232 , and the limiting boss 2321 cooperates with the sliding seat 231 to limit the swing angle of the swing frame 232 .

[0051] In the embodiment of the present invention, the setting of the limiting boss 2321 reflects the safety considerations of the equipment. In actual use, if there are large defects on the surface of the pipe fitting or the grinding tool suddenly gets stuck, an excessively large swing angle may cause damage to the grinding tool or scratches on the workpiece surface. Through the cooperation of the limiting boss 2321 and the sliding seat 231, the swing angle can be limited to a safe range. For example, when the grinding tool encounters hard defects such as weld slag inclusions, the limiting structure can prevent the grinding tool from tilting excessively and avoid greater surface damage. This protection mechanism is particularly suitable for precision pipe processing occasions with high surface quality requirements.

[0052] Specifically, the design of the limiting boss 2321 adopts the mechanical limiting principle, and its structural form can be integrally formed or assembled. The cooperation with the sliding seat 231 can adopt a surface contact or point contact method, and the material selection needs to consider impact resistance. The setting of the limiting distance needs to comprehensively consider the working range and safety margin of the grinding tool.

[0053] Optionally, a limit block structure may be used to adjust the limit range by replacing limit blocks of different sizes; or an adjustable bolt limit mechanism may be used.

[0054] In some embodiments, each elastic polishing unit 235 includes: a support plate 2351; a plurality of elastic columns 2352, the plurality of elastic columns 2352 are arranged in a circular array, one end of each elastic column 2352 is connected to the support plate 2351, and the other end is connected to the mounting plate 234; a polishing block 2353, the polishing block 2353 is arranged on the support plate 2351.

[0055] In an embodiment of the present invention, the elastic grinding unit 235 adopts a ring-shaped array of elastic columns 2352 support structure. This design has unique advantages in local pressure regulation. Multiple elastic columns 2352 are distributed in a ring shape, so that the support plate 2351 can achieve a small degree of tilt adjustment while maintaining stability. For example, when grinding local pits on the surface of the pipeline, the elastic columns 2352 at the corresponding position will produce a large deformation, while the elastic columns 2352 at other positions remain in the basic state. This differentiated deformation ensures that the grinding block 2353 can always maintain good contact with the surface. The ring array arrangement also provides better torsional stiffness to prevent deflection during the grinding process, and is particularly suitable for high-speed grinding conditions.

[0056] Specifically, the elastic support structure adopts the principle of distributed elastic support, and the arrangement of the elastic columns 2352 can be distributed with equal spacing or variable spacing. The connection between the support plate 2351 and the elastic columns 2352 can be threaded or welded, and the material of the elastic columns 2352 can be selected from metal springs or polymer elastic materials. The installation of the grinding block 2353 can be snap-on or bolt-fixed, which is easy to replace.

[0057] In some embodiments, the spacing between adjacent grinding blocks 2353 is smaller than the width of the maximum burr on the surface of the pipe to be processed.

[0058] In the embodiment of the present invention, the problem of grinding dead angle is effectively solved by controlling the spacing between adjacent grinding blocks 2353 to be smaller than the width of the maximum burr on the surface of the pipe to be processed. In practical applications, the common burr width after pipeline weld grinding is in the range of 3-5 mm. If the spacing between the grinding blocks 2353 is too large, it is easy to form an insufficiently polished area between adjacent grinding blocks 2353. By reasonably setting the spacing between the grinding blocks 2353, it is ensured that any burr exceeding the set width can be completely covered by at least one grinding block 2353, which significantly improves the integrity of the grinding. This design is particularly suitable for pipelines with strict surface quality requirements, such as stainless steel pipelines that transport corrosive media.

[0059] Specifically, the design of the spacing between the grinding blocks 2353 is based on the principle of process coverage, and the installation form can be fixed or adjustable. The overlapping area between the grinding blocks 2353 can be achieved by adjusting the installation position, and the material selection needs to consider the balance between wear resistance and toughness.

[0060] In some embodiments, a displacement detection device 3 is also included, which includes: a displacement sensor 31, which is arranged on the sliding seat 231; a controller 32, which is electrically connected to the displacement sensor 31 and the bracket driving device 22, and is used to adjust the rotation speed of the rotating bracket 21 according to the displacement of the sliding seat 231 detected by the displacement sensor 31.

[0061] In the embodiment of the present invention, the setting of the displacement detection device 3 realizes the intelligent control of the grinding process. By real-time monitoring the displacement of the sliding seat 231, the system can determine the current grinding load state. For example, when it is detected that the sliding seat 231 has a large displacement, it indicates that there is a large surface defect at the current position. The controller 32 will automatically reduce the rotation speed of the rotating bracket 21 and increase the grinding time per unit area. This adaptive speed regulation not only improves the grinding quality, but also effectively prevents excessive wear of the grinding tool. In practical applications, this function is particularly suitable for renovation projects of old pipelines with poor surface conditions.

[0062] Specifically, the displacement detection device 3 adopts the closed-loop control principle, and the displacement sensor 31 can be selected from different types such as inductive, photoelectric or magnetoelectric. The installation position of the sensor needs to consider the measurement accuracy and protection requirements, and the signal transmission can be wired or wireless. The controller 32 can adopt a PLC or a single-chip microcomputer system, and the control algorithm can be a simple proportional control or a more complex PID control.

[0063] In some embodiments, the ratio of the rotation speed of the grinding motor 233 to the rotation speed of the rotating bracket 21 is 50:1-100:1.

[0064] In an embodiment of the present invention, the speed ratio of the grinding motor 233 to the rotating bracket 21 is set within the range of 50:1-100:1. This parameter setting is based on a comprehensive consideration of grinding efficiency and quality. A higher speed ratio ensures sufficient material removal capacity while avoiding surface burns caused by excessive grinding. For example, when the rotating bracket 21 rotates at a speed of 2r / min, the grinding motor 233 is maintained at a speed range of 100-200r / min, which can ensure that the surface roughness meets the standard while avoiding excessive local temperature. This speed ratio setting is particularly suitable for large-area surface treatment work, such as rust removal and anti-corrosion treatment of large-diameter pipes.

[0065] Specifically, the speed ratio is set based on the balance principle between material removal efficiency and surface quality, and can be achieved by controlling the speed of the motor itself or by a speed reduction mechanism.

[0066] Optionally, a continuously variable transmission system may be used to achieve more flexible speed ratio adjustment; or a multi-stage transmission structure may be used to achieve different speed ratio combinations through gear shifting.

[0067] In some embodiments, a collector ring assembly 4 is also included, which includes: a stationary contact ring 41 fixed on the working bracket 1; a moving contact ring 42 that is in electrical contact with the stationary contact ring 41 and fixed on the rotating bracket 21; and the moving contact ring 42 is electrically connected to each grinding motor 233.

[0068] In the embodiment of the present invention, the design of the collector ring assembly 4 solves the power supply problem under rotating working conditions. The traditional wiring method easily causes wire entanglement and wear, but the combination of the static contact ring 41 and the dynamic contact ring 42 achieves stable and reliable power transmission. This design not only extends the service life of the equipment, but also improves the continuity of work. For example, in the assembly line operation that needs to continuously process multiple pipes, there is no need to frequently stop due to wire entanglement problems, which significantly improves production efficiency. At the same time, the sealing design of the collector ring can also prevent metal dust from entering the electrical system, thereby improving the reliability of the equipment.

[0069] Specifically, the collector ring assembly 4 adopts the principle of brush contact power transmission, and its structure can be single-circuit or multi-circuit parallel. The material selection of the static contact ring 41 and the dynamic contact ring 42 needs to consider conductivity and wear resistance, and the contact surface can be plated with precious metals. The sealing structure can adopt a labyrinth or contact seal.

[0070] Optionally, a contactless inductive power supply system may be used; or a flexible wire reel structure may be used to realize power supply by automatically retracting and releasing the wires.

[0071] The external surface burr grinding device for pipe processing forms a three-level adaptive adjustment mechanism through the rotation movement of the rotating bracket 21 and the radial displacement, angle swing and local pressure adjustment of the floating grinding assembly 23. When grinding the flange surface of a large-diameter pipe, the rotation of the rotating bracket 21 ensures that the grinding tool can completely cover the entire annular area, avoiding local omissions caused by traditional fixed grinding. The sliding seat 231 in each floating grinding assembly 23 can move radially along the rotating bracket 21, so that the grinding tool can adapt to pipes of different diameters, significantly improving the application range of the equipment. The hinged design of the swing bracket 232 and the sliding seat 231 enables the grinding tool to automatically adjust the angle according to the surface condition, especially when grinding irregular areas such as weld protrusions, it can maintain the best contact state. The multiple elastic grinding units 235 arranged on the mounting plate 234 further refine the accuracy of pressure adjustment. Even when local concave and convex appear at the same circumferential position, the adjacent grinding units can independently adjust the pressure to ensure the uniformity of the grinding quality.

[0072] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0073] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0074] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0075] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for grinding burrs on the outer surface of a pipe fitting, comprising: Working support (1); The grinding mechanism (2) is characterized in that the grinding mechanism (2) comprises: A rotating bracket (21), the rotating bracket (21) is rotatably arranged on the working bracket (1) and is capable of rotating around its central axis; A support driving device (22), wherein the support driving device (22) is used to drive the rotating support (21) to rotate; A plurality of floating grinding assemblies (23), wherein the plurality of floating grinding assemblies (23) are arranged along the circumference of the rotating bracket (21); Each of the floating grinding assemblies (23) comprises: A sliding seat (231), wherein the sliding seat (231) is slidably connected to the rotating bracket (21); A swing frame (232), wherein the swing frame (232) is hinged to the sliding seat (231); A grinding motor (233), wherein the grinding motor (233) is arranged on the swing frame (232); A mounting plate (234), wherein the mounting plate (234) is connected to an output shaft of the grinding motor (233); A plurality of elastic grinding units (235) are provided along the circumference of the mounting plate (234), and each of the elastic grinding units (235) is elastically connected to the mounting plate (234).

2. The outer surface burr grinding equipment for pipe processing according to claim 1 is characterized in that: The sliding seat (231) is slidably connected to the rotating bracket (21) via an inclined guide groove (211), and an extending direction of the inclined guide groove (211) forms a preset angle with a radial direction of the rotating bracket (21).

3. The outer surface burr grinding equipment for pipe processing according to claim 2 is characterized in that: The preset angle is 15°-30°.

4. The outer surface burr grinding equipment for pipe processing according to claim 1 is characterized in that: The swing frame (232) is hinged to the sliding seat (231) via a hinge shaft, and further comprises: A torsion spring (236), wherein the torsion spring (236) is sleeved on the hinge shaft, and two ends of the torsion spring (236) are respectively connected to the swing frame (232) and the sliding seat (231).

5. The outer surface burr grinding equipment for pipe processing according to claim 4 is characterized in that: The swing frame (232) is provided with a limiting boss (2321), and the limiting boss (2321) cooperates with the sliding seat (231) to limit the swing angle of the swing frame (232).

6. The outer surface burr grinding equipment for pipe processing according to claim 1 is characterized in that: Each of the elastic grinding units (235) comprises: Support plate (2351); a plurality of elastic columns (2352), wherein the plurality of elastic columns (2352) are arranged in a ring array, one end of each elastic column (2352) is connected to the support plate (2351), and the other end is connected to the mounting plate (234); A grinding block (2353), wherein the grinding block (2353) is arranged on the support plate (2351).

7. The outer surface burr grinding equipment for pipe processing according to claim 6 is characterized in that: The spacing between adjacent grinding blocks (2353) is smaller than the width of the maximum burr on the surface of the pipe to be processed.

8. The outer surface burr grinding equipment for pipe processing according to claim 1 is characterized in that: It also includes a displacement detection device (3), wherein the displacement detection device (3) includes: A displacement sensor (31), wherein the displacement sensor (31) is arranged on the sliding seat (231); A controller (32) is electrically connected to the displacement sensor (31) and the support driving device (22) and is used to adjust the rotation speed of the rotating support (21) according to the displacement of the sliding seat (231) detected by the displacement sensor (31).

9. The outer surface burr grinding equipment for pipe processing according to claim 1 is characterized in that: The ratio of the rotation speed of the grinding motor (233) to the rotation speed of the rotating bracket (21) is 50:1-100:

1.

10. The outer surface burr grinding equipment for pipe processing according to claim 1 is characterized in that: It also includes a collector ring assembly (4), the collector ring assembly (4) comprising: A stationary contact ring (41) fixed on the working support (1); a moving contact ring (42) which is in electrical contact with the stationary contact ring (41) and is fixed on the rotating bracket (21); The moving contact ring (42) is electrically connected to each of the grinding motors (233).

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