Auxiliary positioning rotating mechanism for pipe machining and method of use thereof

Abstract

The application relates to the technical field of pipeline processing, in particular to an auxiliary positioning rotating mechanism for pipeline processing and a use method thereof, which comprises a rotating locking assembly and a driving assembly. The rotating locking assembly comprises an inner ring capable of rotating in an axial direction, at least two groups of clamping units which are arranged in equal intervals and are slidably connected to the inner ring in a radial direction, and an outer tooth ring coaxially arranged with the inner ring and capable of driving the inner ring and the clamping units to move. The driving assembly comprises a circumferential driving unit arranged on one side of the outer tooth ring and a driving wheel axially connected to a movable end of the circumferential driving unit and meshed with the circumferential side of the outer tooth ring. Under the driving of the driving assembly, the clamping units slidably connected to the circumferential side of the inner ring can automatically and adaptively axially clamp and fix the pipe penetrating through the inner ring, and can also drive the pipe to synchronously rotate in an axial direction, so that the actual cutting speed is improved in cooperation with a cutting knife, and the cutting quality of the pipe is improved.

Description

Technical Field

[0001] This invention relates to the field of pipe processing technology, and in particular to an auxiliary positioning and rotating mechanism for pipe processing and its usage method. Background Technology

[0002] In engineering fields such as building installation, petrochemical pipeline maintenance, shipbuilding, and municipal water supply and drainage, a large number of on-site cutting operations involving metal or plastic pipes are conducted. The quality of pipe cutting directly affects the precision and sealing of subsequent welding or connection processes.

[0003] Effective pipe securing is one of the key challenges during the cutting process. Traditional bench vises or chain clamping methods can only clamp the pipe before cutting with a cutting blade, and they cannot provide dynamic clamping to handle the rotating cutting force.

[0004] To address these issues, the present invention provides an auxiliary positioning and rotating mechanism for pipe processing and its usage method. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary positioning and rotating mechanism for pipe processing, comprising:

[0006] A rotary locking assembly includes an axially rotatable inner ring, at least two sets of clamping units radially slidably connected to the inner ring and arranged at equal intervals, and an outer toothed ring coaxially arranged with the inner ring and capable of driving the inner ring and the clamping units to move.

[0007] The drive assembly includes a circumferential drive unit disposed on one side of the external gear ring, and a drive wheel axially connected to the movable end of the circumferential drive unit and meshing with the circumferential side of the external gear ring.

[0008] Preferably, it also includes a support frame rotatably connected to the inner ring and the outer toothed ring.

[0009] Preferably, the upright frame is rotatably connected to the inner ring and the outer toothed ring by two sets of first rotating members and two sets of second rotating members respectively;

[0010] The first rotating component includes a first slide rail disposed between the inner ring and the upright, and a first slider that forms a sliding engagement with the first slide rail;

[0011] The second rotating component includes a second slide rail disposed between the external toothed ring and the upright, and a second slider that slides in cooperation with the second slide rail.

[0012] Preferably, the support frame is further provided with a braking assembly for applying braking force to the inner ring;

[0013] The braking assembly includes a first linear drive unit mounted on a frame via a mounting bracket, and a brake pad connected to the movable end of the first linear drive unit, so as to provide dynamic braking force by moving the brake pad against or away from the inner ring end face through the movement of the first linear drive unit.

[0014] Preferably, the inner ring has a driven wheel rotatably connected to the circumference of the inner ring, which corresponds to the clamping unit and meshes with the inner circumference of the outer toothed ring.

[0015] Preferably, the clamping unit includes a movable rack that meshes with the driven wheel, and a clamping block disposed at the end of the movable rack.

[0016] Preferably, the inner ring has gear holes adapted to the driven wheel and the movable rack respectively, and a sliding hole communicating with the gear holes.

[0017] Preferably, a cutting component is also provided on one side of the support frame.

[0018] Preferably, the cutting assembly includes a base horizontally connected to the edge of the support frame, a positioning frame disposed on the base, a second linear drive unit mounted on the positioning frame, and a cutting unit connected to the movable end of the second linear drive unit, wherein the second linear drive unit can drive the cutting unit to move radially along the inner ring.

[0019] Preferably, the positioning frame is movable along an axial direction parallel to the inner ring.

[0020] The method of using the above-mentioned auxiliary positioning and rotating mechanism for pipe processing includes the following steps:

[0021] Step 1: Insert the pipe to be processed through the inner ring and apply a braking force to the inner ring to keep it fixed by using the brake pads;

[0022] Step 2: Start the drive assembly to drive the outer toothed ring to rotate, so that the clamping unit radially contracts to automatically clamp and fix the pipe to be processed, achieving a locked state in which the outer toothed ring and the inner ring are relatively fixed.

[0023] Step 3: Reduce the braking torque applied by the brake pads to less than the torque of the external gear ring rotation, so that while maintaining the locked state, the external gear ring can drive the inner ring and the clamped pipe to rotate synchronously, thereby achieving the positioning and rotation of the pipe.

[0024] The beneficial effects of this invention are:

[0025] Driven by the drive assembly, the rotary locking assembly of the present invention enables the clamping unit slidably connected to the inner ring to automatically clamp and fix the pipe through the inner ring in an axial direction, while also driving the pipe to rotate synchronously in the axial direction. This, in conjunction with the cutting blade, increases the actual cutting speed and improves the cutting quality of the pipe. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure from another perspective of the present invention;

[0029] Figure 3 This is a schematic diagram of the main structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the rotary locking assembly structure of the present invention;

[0031] Figure 5 This is a top view schematic diagram of the inner ring structure of the present invention;

[0032] Figure 6 This is a cross-sectional structural diagram of the present invention;

[0033] Figure 7 This is a schematic diagram of the drive assembly and braking assembly of the present invention;

[0034] Figure 8 This is a schematic diagram of the drive assembly and braking assembly from another perspective of the present invention;

[0035] Figure 9 This is a schematic diagram of a structure according to an embodiment of the present invention.

[0036] In the attached drawings: 1. Rotary locking assembly; 11. Inner ring; 111. Gear movable hole; 112. Sliding hole; 113. First slide rail; 114. Second slide rail; 12. External gear ring; 13. Driven wheel; 14. Movable rack; 15. Clamping block; 2. Drive assembly; 21. Circumferential drive unit; 22. Drive wheel; 23. Support base; 3. Stand; 4. Braking assembly; 41. Fixing frame; 42. First linear drive unit; 43. Brake pad; 5. Base; 6. Positioning frame; 7. Second linear drive unit; 8. Cutting unit. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1

[0039] The auxiliary positioning and rotating mechanism for pipe processing of the present invention, such as Figures 1-8 As shown, it includes: a support frame 3 for providing support, a rotary locking assembly 1 rotatably connected to the support frame 3 for axially fixing the inserted pipe fitting, a drive assembly 2 mounted on the support frame 3 for driving the rotary locking assembly 1 to rotate axially, and a braking assembly 4 for keeping the rotary locking assembly 1 in a locked state.

[0040] Among them, such as Figures 3-6 As shown, the rotary locking assembly 1 includes an inner ring 11 and an outer toothed ring 12 that are rotatably connected to the upright 3 via two sets of first rotating members and two sets of second rotating members, respectively, and at least two sets of clamping units that are radially slidably connected to the inner ring 11 and arranged at equal intervals.

[0041] In this embodiment, the first rotating component and the second rotating component are common annular guide rail structures in the mechanical field. The first rotating component includes a first slide rail 113 disposed between the inner ring 11 and the upright 3, and a first slider that slides in cooperation with the first slide rail 113. The second rotating component includes a second slide rail 114 disposed between the outer toothed ring 12 and the upright 3, and a second slider that slides in cooperation with the second slide rail 114. The inner ring 11 is made of common gray cast iron or carbon ceramic composite material. The inner and outer circumferential sides of the outer toothed ring 12 are both gear tooth structures. The gear teeth on the outer circumferential side cooperate with the drive component 2 to realize the rotation of the outer toothed ring 12. When the outer toothed ring 12 rotates, it can drive the clamping unit on the inner ring 11 to slide radially to clamp or release the tube inserted through the inner ring 11. Simultaneously, while keeping the pipe clamped, the inner ring 11 and the clamped pipe can be driven to rotate synchronously. The inner ring 11 has movable parts corresponding to each clamping unit on its circumference. The movable parts include a gear movable hole 111 and a sliding hole 112 that are connected. The clamping unit is slidably inserted into the sliding hole 112, and the gear movable hole 111 is rotatably connected to a driven wheel 13 that meshes with the inner circumference of the outer gear ring 12 and cooperates with the clamping unit to drive its movement. There are six clamping units, which include a movable rack 14 that is slidably connected in the sliding hole 112 and meshes with the driven wheel 13, and a clamping block 15 that is fixedly connected to the end of the movable rack 14 that extends into the inner ring 11. The clamping block 15 is arc-shaped. When the clamping unit shrinks to the end, the clamping blocks 15 are spliced ​​together to form a complete circular structure.

[0042] like Figure 3 , Figures 6-8 As shown, the drive assembly 2 includes a circumferential drive unit 21 mounted on the stand 3, and a drive wheel 22 axially connected to the movable end of the circumferential drive unit 21 and meshing with the teeth of the external gear ring 12. In this embodiment, the circumferential drive unit 21 is an intelligent servo motor, which drives the drive wheel 22 to rotate when it rotates, and drives the external gear ring 12 through meshing with it. It should be noted that in practical applications, a reducer can be installed between the drive wheel 22 and the circumferential drive unit 21 as needed to increase torque; at the same time, a support seat 23 can be installed between the servo motor and the stand 3 to adjust the height of the servo motor according to the distance between the external gear ring 12 and the drive wheel 22, so as to ensure the meshing between the drive wheel 22 and the external gear ring 12.

[0043] When the servo motor drives the external gear ring 12 to rotate, the external gear ring 12 drives the driven wheel 13 to rotate in the same direction through the gear tooth structure on its inner circumference. At the same time, the driven wheel 13 meshes with the movable rack 14, causing the movable rack 14 to drive the clamping block 15 to contract radially along the inner ring 11 to clamp the pipe inserted through the inner ring 11. Since each clamping unit operates synchronously, when the pipe is contracted and clamped, each clamping unit applies a uniform radial clamping force to the pipe to stably fix the pipe and keep it coaxial with the inner ring 11, thereby achieving the positioning of the pipe and achieving a locked state in which the external gear ring 12 and the inner ring 11 are relatively fixed. It should be noted that the prerequisite for achieving the locked state is that the inner ring 11 needs to be braked by the braking assembly 4 to limit the rotation of the inner ring 11.

[0044] like Figures 7-8 As shown, the braking assembly 4 includes a first linear drive unit 42 mounted on the support frame 3 via a fixing bracket 41, and a brake pad 43 detachably connected to the movable end of the first linear drive unit 42 via bolts. In this embodiment, the first linear drive unit 42 is preferably an electric push rod, the extension and retraction direction of the movable end of the electric push rod is perpendicular to the end face of the inner ring 11. When it is driven to extend and retract, it can drive the brake pad 43 to press against or move away from the end face of the inner ring 11. When the brake pad 43 presses against the end face of the inner ring 11, it can generate a braking force that restricts the rotation of the inner ring 11. Its principle is similar to that of a car braking system, and will not be described in detail here.

[0045] When the locked state is reached, the clamping force between the brake pad 43 and the inner ring 11 end face can be reduced by controlling the extension and retraction length of the moving end of the electric push rod. This reduces the braking force between the brake pad 43 and the inner ring 11 to less than the rotational force of the outer gear ring 12. At this time, the outer gear ring 12 can drive the inner ring 11 and the clamped pipe to rotate synchronously, realizing the positioning and rotation of the pipe. In this state, the operator can use the cutting unit 8, such as an electric circular saw that rotates in the opposite direction to the pipe, to cut the rotating pipe. Since the two rotate in opposite directions, the relative cutting speed can be greatly increased, resulting in a series of changes in cutting efficiency and quality.

[0046] For example, during cutting, what truly matters is the relative speed between the tool and the tube at the point of contact. As they rotate in opposite directions, their linear velocities superimpose, resulting in a significant increase in actual cutting speed. This means cutting is like cutting something with a faster blade, with significantly reduced resistance, easier tool entry, and shorter cutting time. Under high-speed cutting conditions, material is removed more cleanly, reducing the risk of compression and tearing. Consequently, the cut is smoother and more even, with a marked reduction in burrs on the inner and outer sides of the tube opening. For thin-walled tubes, it also effectively reduces elliptical deformation of the tube opening caused by unidirectional compression, thus improving processing quality.

[0047] After the pipe is cut, the brake pad 43 can be used to apply a braking force greater than the rotational force of the outer toothed ring 12 to the inner ring 11, and at the same time, the operation of the circumferential drive unit 21 can be stopped. At this time, the inner ring 11, the pipe and the outer toothed ring 12 stop rotating while maintaining the locked state. Then, the circumferential drive unit 21 is driven to reverse. Under the action of the driven wheel 13, the movable rack 14 retracts radially in sync, and the clamping block 15 expands circumferentially in a uniform manner, thereby releasing the clamping and fixing of the pipe and making it easier to disassemble the pipe.

[0048] Of course, in addition to cutting pipes, this device can also be used in processes such as spraying on the surface of pipes. By fixing and rotating the pipe, the spraying can be made more uniform.

[0049] Based on the above solution, in another preferred embodiment, the cutting unit 8 can be further integrated into the support frame 3 to achieve automatic cutting of the pipe fittings. In this embodiment, as... Figure 9 As shown, a base 5 is horizontally connected to the edge of the upright frame 3, and a positioning frame 6 is fixed on the base 5. The second linear drive unit 7 is installed on the positioning frame 6 to ensure that its movable end can move radially parallel to the inner ring 11. At the same time, a cutting unit 8, preferably an electric circular saw, is installed on the movable end of the second linear drive unit 7. The second linear drive unit 7 and the first linear drive unit 42 both use electric push rods.

[0050] When the pipe is clamped and fixed while rotating, the electric circular saw can be started to rotate. By controlling the extension and retraction of the movable end of the second linear drive unit 7 according to the wall thickness of the pipe, the electric circular saw is brought close to the pipe and automatically cuts the pipe, thereby saving manpower and improving the automation level of pipe processing.

[0051] In addition, it is conceivable that a movable device, such as a KK assembly or a linear guide, can be installed between the base 5 and the positioning frame 6, so that the positioning frame 6 can move along the axis parallel to the inner ring 11 to adjust the cutting position and further improve the degree of automation.

[0052] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An auxiliary positioning and rotating mechanism for pipe processing, characterized in that, include: The rotary locking assembly (1) includes an axially rotatable inner ring (11), at least two sets of clamping units that are radially slidably connected to the inner ring (11) and arranged at equal intervals, and an outer toothed ring (12) that is coaxially arranged with the inner ring (11) and can drive the inner ring (11) and the clamping units to move. The drive assembly (2) includes a circumferential drive unit (21) disposed on one side of the external gear ring (12) and a drive wheel (22) axially connected to the movable end of the circumferential drive unit (21) and meshing with the circumferential side of the external gear ring (12). Braking assembly (4), the braking assembly (4) includes a brake pad (43) disposed on one side of the inner ring (11) for applying dynamic braking force to the inner ring (11).

2. The auxiliary positioning and rotating mechanism for pipe processing as described in claim 1, characterized in that: It also includes a stand (3) that is rotatably connected to the inner ring (11) and the outer toothed ring (12).

3. The auxiliary positioning and rotating mechanism for pipe processing as described in claim 2, characterized in that: The upright frame (3) is rotatably connected to the inner ring (11) and the outer toothed ring (12) through two sets of first rotating parts and two sets of second rotating parts respectively. The first rotating component includes a first slide rail (113) disposed between the inner ring (11) and the upright (3), and a first slider that forms a sliding fit with the first slide rail (113); The second rotating component includes a second slide rail (114) disposed between the outer toothed ring (12) and the upright (3) and a second slider that forms a sliding fit with the second slide rail (114).

4. The auxiliary positioning and rotating mechanism for pipe processing as described in claim 2, characterized in that: The braking assembly (4) further includes a first linear drive unit (42) mounted on the stand (3) via a fixing bracket (41), and a brake pad (43) connected to the movable end of the first linear drive unit (42) so that the brake pad (43) is driven to press against or move away from the end face of the inner ring (11) by the movement of the first linear drive unit (42).

5. The auxiliary positioning and rotating mechanism for pipe processing as described in claim 1, characterized in that: The inner ring (11) is rotatably connected to a driven wheel (13) that corresponds to the clamping unit and meshes with the inner circumference of the outer toothed ring (12).

6. The auxiliary positioning and rotating mechanism for pipe processing as described in claim 5, characterized in that: The clamping unit includes a movable rack (14) that meshes with the driven wheel (13), and a clamping block (15) disposed at the end of the movable rack (14).

7. The auxiliary positioning and rotating mechanism for pipe processing as described in claim 6, characterized in that: The inner ring (11) has gear holes (111) adapted to the driven wheel (13) and the movable rack (14) respectively, and a sliding hole (112) connected to the gear holes (111).

8. The auxiliary positioning and rotating mechanism for pipe processing as described in claim 2, characterized in that: A cutting assembly is also provided on one side of the support frame (3); The cutting assembly includes a base (5) horizontally connected to the edge of the stand (3), a positioning frame (6) disposed on the base (5), a second linear drive unit (7) mounted on the positioning frame (6), and a cutting unit (8) connected to the movable end of the second linear drive unit (7). The second linear drive unit (7) can drive the cutting unit (8) to feed radially along the inner ring (11).

9. A method of using the auxiliary positioning rotary mechanism for pipe processing as described in any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Insert the pipe to be processed through the inner ring (11) and apply a braking force to the inner ring (11) through the brake pad (43) to keep it fixed. Step 2: Start the drive assembly (2) to drive the outer toothed ring (12) to rotate, so that the clamping unit radially shrinks to automatically clamp and fix the pipe to be processed, so as to achieve a locked state in which the outer toothed ring (12) and the inner ring (11) are relatively fixed. Step 3: Reduce the braking torque applied by the brake pad (43) to less than the torque of the rotation of the outer gear ring (12), so that while maintaining the locked state, the outer gear ring (12) can drive the inner ring (11) and the clamped pipe to rotate synchronously, thereby achieving the positioning and rotation of the pipe.

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