Pipe joint inner wall polishing device

By designing an adjustable positioning support mechanism and an electrically controlled push rod, the problem of frequent fixture replacement required by existing devices was solved, achieving efficient and uniform polishing of the inner wall of the pipe joint, and improving processing accuracy and consistency.

CN224158242UActive Publication Date: 2026-04-24JIAXING YIDA PIPE FITTINGS MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIAXING YIDA PIPE FITTINGS MFG CO LTD
Filing Date
2025-05-30
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

The existing pipe fitting inner wall polishing equipment lacks an adjustable positioning support mechanism, resulting in frequent fixture changes, low production efficiency, poor process compatibility, uneven polishing, and insufficient precision and consistency.

Method used

An adjustable positioning support mechanism was designed. The adjustment block is driven by a lead screw and a motor to adapt to pipe joints of different diameters. Combined with an electrically controlled push rod and a polishing mechanism, it can achieve automatic positioning and polishing, avoiding shaking and eccentricity.

Benefits of technology

It improves production efficiency, enhances process compatibility and applicability, ensures polishing uniformity, and improves processing accuracy and consistency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224158242U_ABST
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Abstract

The utility model relates to the technical field of pipe machining devices, and provides a pipe joint inner wall polishing device which comprises a base plate, a plurality of rod frames and limiting rods fixedly arranged on the outer surface of the base plate, screw rods fixedly arranged on the opposite faces of the two rod frames on one side and rotationally connected with the opposite faces of the two rod frames on the other side, a first motor fixedly installed on the outer surface of one rod frame, and a second motor fixedly installed on the outer surface of the other rod frame. An output shaft of the first motor is fixedly connected with one end face of the lead screw, the outer surface of the lead screw and the outer surface of the limiting rod are each movably connected with two adjusting blocks, the device is provided with a structure which enables the device to adjust the workpiece positioning and supporting mechanism according to the diameter size of the actual workpiece to be polished, and the device does not need to frequently replace a special clamp or manually adjust; the production efficiency of the device is improved, the process compatibility and the application range of the device are improved, uneven polishing pressure caused by shaking or eccentricity of the pipe body in the polishing process is avoided, non-polishing or excessive abrasion possibly occurring in a local area is avoided, and the machining precision and consistency are improved.
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Description

Technical Field

[0001] This utility model relates to the technical field of pipe processing equipment, and in particular to a pipe joint inner wall polishing device. Background Technology

[0002] Pipe fittings are key components in piping systems used to connect, branch, turn, or change the diameter of pipes. They are commonly found in industries such as water supply, chemical, gas, and pharmaceutical. Internal polishing is the process of polishing the inner surface of the pipe fitting to make it smooth and flat, thereby optimizing the fluid transmission performance within the pipeline and extending its service life.

[0003] In the prior art, such as Chinese Publication No. CN220592741U, this utility model proposes a polishing device for the inner wall of stainless steel pipes, including a base with a horizontally mounted polishing shaft connected to the base. One end of the polishing shaft is provided with a polishing joint. Under the operation of the polishing motor, the driving gear and the driven gear mesh to drive the polishing shaft to rotate. When the polishing shaft extends and inserts into the pipe, the polishing disc provided at the outer end of the polishing base on the polishing joint polishes the inner wall of the pipe. When the polishing shaft penetrates deep into the pipe, the ball bearings provided on the support base roll into contact with the inner wall of the pipe being processed, which facilitates the support of the polishing shaft as it travels inside the pipe and ensures the stability of the polishing of the inner wall of the pipe. Under the extraction of the air pump, the debris generated during polishing is sucked in along the end of the polishing shaft and stored in the debris storage box to ensure a clean processing environment.

[0004] While the above-mentioned solutions have the advantages mentioned above, their disadvantages are that they lack a structure that allows the device to adjust the workpiece positioning support mechanism according to the actual diameter of the workpiece to be polished. The device needs to frequently change special fixtures or make manual adjustments, resulting in reduced production efficiency. The device's process compatibility and applicability are limited. At the same time, it is easy to cause the tube to shake or become eccentric during the polishing process, leading to uneven polishing pressure. Local areas may be unpolished or excessively worn, resulting in reduced processing accuracy and consistency. Utility Model Content

[0005] The purpose of this invention is to provide a polishing device for the inner wall of a pipe joint. This invention is designed with a structure that allows the device to adjust the workpiece positioning support mechanism according to the actual diameter of the workpiece to be polished. The device does not require frequent replacement of special fixtures or manual adjustment, thereby improving the production efficiency of the device, increasing the process compatibility and applicability of the device, avoiding pipe shaking or eccentricity during polishing and resulting in uneven polishing pressure, avoiding unpolished or excessively worn areas, and improving processing accuracy and consistency.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a pipe joint inner wall polishing device, comprising:

[0007] A substrate, wherein multiple rods are fixedly disposed on the outer surface of the substrate, and further includes:

[0008] A limiting rod is fixedly installed on one side of two opposing surfaces of the rod frame, and a lead screw is rotatably connected to the other two opposing surfaces of the rod frame. A first motor is fixedly installed on the outer surface of one rod frame, and the output shaft of the first motor is fixedly connected to one end face of the lead screw. Two adjusting blocks are movably connected to the outer surfaces of the lead screw and the limiting rod. Two adjusting blocks on one side are threaded to the lead screw, and two adjusting blocks on the other side are slidably connected to the limiting rod. Connecting shafts are rotatably connected to the outer surfaces of multiple adjusting blocks. Two bearing rollers are fixedly installed on the opposing surfaces of multiple connecting shafts. The pipe joint workpiece to be polished is placed on the surface of the two bearing rollers. The first motor is turned on, and the output shaft of the first motor drives the lead screw to rotate on the opposing surfaces of the two rod frames. Under the limiting and guiding of the limiting rod on the other side, the rotation of the lead screw drives the multiple adjusting blocks and the two bearing rollers to move in opposite or opposite directions along the limiting rod, so that the device can stably position and support pipe joint workpieces of different diameters.

[0009] Preferably, a top frame is fixedly provided on the outer surface of the substrate, and two second electrically controlled push rods are fixedly installed on the outer surface of the top frame. Mounting plates are fixedly provided on the outer surfaces of the output ends of the two second electrically controlled push rods, and the top frame mounts the two second electrically controlled push rods.

[0010] Preferably, a rotating roller is rotatably connected to the outer surface of the mounting plate, and a second motor is fixedly mounted on the outer surface of the mounting plate. The output shaft of the second motor is fixedly connected to the rotating roller. When the two second electrically controlled push rods are opened, the output ends of the two second electrically controlled push rods drive the mounting plate and the rotating roller to move until the rotating roller contacts the pipe joint surface on the bearing roller. When the second motor is opened, the output shaft of the second motor drives the rotating roller to rotate, which cooperates with the two bearing rollers to rotate the pipe joint.

[0011] Preferably, two first electrically controlled push rods are fixedly disposed on the outer surface of the substrate, and a polishing mechanism is fixedly installed on the outer surface of the output end of the two first electrically controlled push rods. When the two first electrically controlled push rods are opened, the output end of the two first electrically controlled push rods drives the polishing mechanism to move.

[0012] Preferably, an electric telescopic rod is rotatably connected to the outer surface of the polishing mechanism, and a polishing wheel is fixedly installed on the outer surface of the output end of the electric telescopic rod. Opening the polishing mechanism drives the electric telescopic rod and the polishing wheel to rotate and polish the inner wall of the pipe joint. Opening the electric telescopic rod drives the polishing wheel to move and polish the inner wall of the pipe joint.

[0013] Preferably, a collection port is provided on the outer surface of the substrate, and a base plate is fixedly provided on the bottom outer surface of the substrate. The collection port collects material debris generated during the polishing process of the inner wall of the pipe joint.

[0014] Preferably, a cleaning door is rotatably connected to the outer surface of the base plate, and a handle is fixedly provided on the outer surface of the cleaning door. By holding the handle, the cleaning door can be opened to clean material debris inside the base plate.

[0015] Preferably, a plurality of support columns are fixedly provided on the outer surface of the bottom of the base plate. The plurality of support columns are symmetrically arranged on the outer surface of the bottom of the base plate near the four corners, and the plurality of support columns provide stable support for the main body of the device.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] This utility model provides a device with a structure that allows the device to adjust the workpiece positioning support mechanism according to the actual diameter of the workpiece to be polished. The device does not require frequent replacement of special fixtures or manual adjustment, thereby improving the production efficiency of the device, increasing the process compatibility and applicability of the device, avoiding tube shaking or eccentricity during polishing and resulting in uneven polishing pressure, avoiding the possibility of unpolished or excessively worn areas, and improving processing accuracy and consistency. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of a pipe joint inner wall polishing device provided by this utility model;

[0019] Figure 2 A top view of a pipe joint inner wall polishing device provided by this utility model;

[0020] Figure 3 A side perspective structural diagram of a pipe joint inner wall polishing device provided by this utility model;

[0021] Figure 4 This utility model provides a pipe joint inner wall polishing device. Figure 1 A magnified three-dimensional structural diagram at point A in the diagram.

[0022] Legend:

[0023] 1. Base plate; 2. Limiting rod; 3. Rod frame; 4. Rotating roller; 5. Collection port; 6. First electrically controlled push rod; 7. Polishing mechanism; 8. Electric telescopic rod; 9. Second motor; 10. Base plate; 11. Cleaning door; 12. Handle; 13. Support column; 14. Polishing wheel; 15. Top frame; 16. Second electrically controlled push rod; 17. Mounting plate; 18. First motor; 19. Lead screw; 20. Adjusting block; 21. Bearing roller; 22. Connecting shaft. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] Example 1, as Figures 1 to 4 As shown, this utility model provides a pipe joint inner wall polishing device, including a base plate 1. Multiple rods 3 are fixedly mounted on the outer surface of the base plate 1. A limiting rod 2 is fixedly mounted on the opposite face of two rods 3 on one side, and a lead screw 19 is rotatably connected to the opposite face of two rods 3 on the other side. A first motor 18 is fixedly mounted on the outer surface of one rod 3. The output shaft of the first motor 18 is fixedly connected to one end face of the lead screw 19. Two adjusting blocks 20 are movably connected to the outer surfaces of both the lead screw 19 and the limiting rod 2. Two adjusting blocks 20 on one side are threadedly connected to the lead screw 19, and two adjusting blocks 20 on the other side are threadedly connected to the limiting rod 2. The sliding connection has multiple adjusting blocks 20 with rotatably connected connecting shafts 22 on their outer surfaces. Two bearing rollers 21 are fixedly arranged on the opposite surfaces of the multiple connecting shafts 22. The pipe joint workpiece to be polished is placed on the surface of the two bearing rollers 21. The first motor 18 is turned on, and the output shaft of the first motor 18 drives the lead screw 19 to rotate on the opposite surfaces of the two rod frames 3. Under the limiting and guiding of the limiting rod 2 on the other side, the rotation of the lead screw 19 drives the multiple adjusting blocks 20 and the two bearing rollers 21 to move in opposite or opposite directions along the limiting rod 2, so that the device can stably position and support pipe joint workpieces of different diameters.

[0027] Furthermore, such as Figures 1 to 4 As shown, a top frame 15 is fixedly installed on the outer surface of the substrate 1, and two second electrically controlled push rods 16 are fixedly installed on the outer surface of the top frame 15. A mounting plate 17 is fixedly installed on the outer surface of the output end of the two second electrically controlled push rods 16, and the top frame 15 installs the two second electrically controlled push rods 16.

[0028] Furthermore, such as Figures 1 to 4 As shown, a rotating roller 4 is rotatably connected to the outer surface of the mounting plate 17, and a second motor 9 is fixedly mounted on the outer surface of the mounting plate 17. The output shaft of the second motor 9 is fixedly connected to the rotating roller 4. When the two second electrically controlled push rods 16 are opened, the output ends of the two second electrically controlled push rods 16 drive the mounting plate 17 and the rotating roller 4 to move until the rotating roller 4 contacts the pipe joint surface of the bearing roller 21. When the second motor 9 is opened, the output shaft of the second motor 9 drives the rotating roller 4 to rotate, which cooperates with the two bearing rollers 21 to rotate the pipe joint.

[0029] Furthermore, such as Figures 1 to 4 As shown, two first electrically controlled push rods 6 are fixedly disposed on the outer surface of the substrate 1. A polishing mechanism 7 is fixedly installed on the outer surface of the output end of the two first electrically controlled push rods 6. When the two first electrically controlled push rods 6 are opened, the output end of the two first electrically controlled push rods 6 drives the polishing mechanism 7 to move.

[0030] Furthermore, such as Figures 1 to 4 As shown, an electric telescopic rod 8 is rotatably connected to the outer surface of the polishing mechanism 7. A polishing wheel 14 is fixedly installed on the outer surface of the output end of the electric telescopic rod 8. When the polishing mechanism 7 is opened, the electric telescopic rod 8 and the polishing wheel 14 rotate to polish the inner wall of the pipe joint. When the electric telescopic rod 8 is opened, the polishing wheel 14 moves and polishes the inner wall of the pipe joint.

[0031] Furthermore, such as Figures 1 to 4 As shown, a collection port 5 is provided on the outer surface of the substrate 1, and a base plate 10 is fixedly provided on the bottom outer surface of the substrate 1. The collection port 5 collects the material debris generated during the polishing process of the inner wall of the pipe joint.

[0032] Furthermore, such as Figures 1 to 4 As shown, a cleaning door 11 is rotatably connected to the outer surface of the base plate 10, and a handle 12 is fixedly installed on the outer surface of the cleaning door 11. By holding the handle 12, the cleaning door 11 can be opened to clean the material debris inside the base plate 10.

[0033] Furthermore, such as Figures 1 to 4 As shown, multiple support columns 13 are fixedly installed on the bottom outer surface of the base plate 10. The multiple support columns 13 are symmetrically arranged on the bottom outer surface of the base plate 10 near the four corners, and the multiple support columns 13 provide stable support for the main body of the device.

[0034] Working principle: The pipe fitting workpiece to be polished is placed on the surface of two bearing rollers 21. The first motor 18 is turned on, and the output shaft of the first motor 18 drives the lead screw 19 to rotate on the opposite side of the two rod frames 3. Under the limiting and guiding of the limiting rod 2 on the other side, the rotation of the lead screw 19 drives multiple adjusting blocks 20 and the two bearing rollers 21 to move in opposite or opposite directions along the limiting rod 2, so that the device can stably position and support pipe fitting workpieces of different diameters, improve the production efficiency of the device, and improve the process compatibility and applicability of the device. The two second electrically controlled push rods 16 are then turned on. The output end of motor 16 drives the mounting plate 17 and the rotating roller 4 to move until the rotating roller 4 contacts the pipe joint surface on the bearing roller 21. The second motor 9 is turned on, and the output shaft of the second motor 9 drives the rotating roller 4 to rotate, which in turn rotates the pipe joint in conjunction with the two bearing rollers 21. The two first electric control push rods 6 are turned on, and the output ends of the two first electric control push rods 6 drive the polishing mechanism 7 and the polishing wheel 14 to move to contact the inner wall of the pipe joint. The polishing mechanism 7 is turned on, which drives the electric telescopic rod 8 and the polishing wheel 14 to rotate and polish the inner wall of the pipe joint. The electric telescopic rod 8 is turned on, which drives the polishing wheel 14 to move and polish the inner wall of the pipe joint.

[0035] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A device for polishing the inner wall of a pipe joint, comprising: The substrate (1), wherein a plurality of rods (3) are fixedly disposed on the outer surface of the substrate (1), is characterized in that it further comprises: A limiting rod (2) is fixedly installed on the opposite face of two rod frames (3) on one side, and a lead screw (19) is rotatably connected to the opposite face of two rod frames (3) on the other side. A first motor (18) is fixedly installed on the outer surface of one rod frame (3). The output shaft of the first motor (18) is fixedly connected to one end face of the lead screw (19). Two adjusting blocks (20) are movably connected to the outer surface of the lead screw (19) and the limiting rod (2). Two adjusting blocks (20) on one side are threadedly connected to the lead screw (19), and two adjusting blocks (20) on the other side are slidably connected to the limiting rod (2). A connecting shaft (22) is rotatably connected to the outer surface of multiple adjusting blocks (20). Two bearing rollers (21) are fixedly installed on the opposite face of multiple connecting shafts (22).

2. The pipe joint inner wall polishing device according to claim 1, characterized in that: A top frame (15) is fixedly provided on the outer surface of the substrate (1), and two second electric push rods (16) are fixedly installed on the outer surface of the top frame (15). A mounting plate (17) is fixedly provided on the outer surface of the output end of the two second electric push rods (16).

3. The pipe joint inner wall polishing device according to claim 2, characterized in that: The mounting plate (17) is rotatably connected to a rotating roller (4) on its outer surface. A second motor (9) is fixedly mounted on the outer surface of the mounting plate (17). The output shaft of the second motor (9) is fixedly connected to the rotating roller (4).

4. The pipe joint inner wall polishing device according to claim 1, characterized in that: Two first electrically controlled push rods (6) are fixedly disposed on the outer surface of the substrate (1), and a polishing mechanism (7) is fixedly installed on the outer surface of the output end of the two first electrically controlled push rods (6).

5. A pipe joint inner wall polishing device according to claim 4, characterized in that: The polishing mechanism (7) is rotatably connected to an electric telescopic rod (8) on its outer surface, and a polishing wheel (14) is fixedly installed on the outer surface of the output end of the electric telescopic rod (8).

6. The pipe joint inner wall polishing device according to claim 1, characterized in that: The substrate (1) has a collection port (5) on its outer surface and a bottom plate (10) is fixedly provided on the bottom outer surface of the substrate (1).

7. A pipe joint inner wall polishing device according to claim 6, characterized in that: A cleaning door (11) is rotatably connected to the outer surface of the base plate (10), and a handle (12) is fixedly provided on the outer surface of the cleaning door (11).

8. A pipe joint inner wall polishing device according to claim 6, characterized in that: Multiple support columns (13) are fixedly installed on the bottom outer surface of the base plate (10), and the multiple support columns (13) are symmetrically arranged on the bottom outer surface of the base plate (10) near the four corners.

Citation Information

Patent Citations

  • Pipe inner wall polishing device applied to stainless steel pipe

    CN220592741U