An apparatus for polishing the interior wall of a tetrafluoro-lined pipe
By designing a polishing device for PTFE-lined pipes with automatic clamping and driving components, the problem that existing devices cannot adapt to different pipe diameters has been solved, achieving stable clamping and efficient polishing, and improving processing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING FUYUAN CHEM PIPELINE EQUIP
- Filing Date
- 2025-07-25
- Publication Date
- 2026-06-26
AI Technical Summary
Existing PTFE-lined pipe polishing equipment cannot clamp pipes of different diameters, affecting polishing stability and processing efficiency, and requires polishing heads of corresponding diameters.
A polishing device for the inner wall of PTFE-lined pipes was designed. By setting a fixing component, pipes of different inner diameters can be automatically clamped, and by driving a component, the polishing pad can be made to fit tightly against the inner wall of the pipe, thus adapting to the polishing requirements of different inner diameters.
It achieves stable clamping and efficient polishing of pipes with different inner diameters, improving processing efficiency and expanding the application range.
Smart Images
Figure CN224407233U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PTFE pipe polishing technology, specifically a device for polishing the inner wall of PTFE-lined pipes. Background Technology
[0002] Polishing machines, also known as grinding machines, are commonly used for mechanical grinding, polishing, and waxing. Their working principle is as follows: an electric motor drives a sponge or wool polishing disc mounted on the machine to rotate at high speed. Due to the combined action of the polishing disc and polishing compound, friction is applied to the surface to be polished, thereby removing paint contamination, oxide layers, and shallow scratches. After pipe production, burrs and stains may remain on the surface, requiring polishing equipment to treat them and make the surface smoother.
[0003] Currently available surface polishing devices for PTFE-lined steel pipes have the following shortcomings: they cannot clamp the pipes according to different diameters, affecting the stability of the PTFE pipes during subsequent polishing; and they require polishing heads of corresponding diameters, reducing processing efficiency. Therefore, a new inner wall polishing device for PTFE-lined pipes is needed to address these shortcomings. Utility Model Content
[0004] Technical problems to be solved
[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an inner wall polishing device for PTFE-lined pipes. Through the setting of the fixing component, it can realize the automatic clamping function for pipes with different inner diameters. It can clamp large-diameter inner wall pipes, small-diameter inner wall pipes and stepped inner wall pipes, and has a wide range of applications. Through the setting of the driving component, it can make corresponding diameter changes according to the inner diameter of the inner wall of the pipe to be processed, so that the polishing pad is always in close contact with the inner wall of the pipe, thereby improving the processing efficiency.
[0006] Technical solution
[0007] To achieve the above objectives, the present invention provides the following technical solution: an inner wall polishing device for a PTFE-lined pipe, comprising a support frame and a placement frame, wherein a fixing seat is fixedly installed on the upper side of the support frame, a placement frame is fixedly installed on the right side of the support frame, a PTFE pipe body is placed inside the placement frame, a fixing component is provided on the right side of the fixing seat, and a driving component is provided inside the support frame.
[0008] The present invention is further configured such that the fixing component includes a fixing tube, a fixing ring, a movable ring, a fixing block, a hinge rod, a support rod, a first cylinder, and a connecting hole. The fixing tube is fixedly installed inside the fixing seat. The right end of the fixing tube is fixedly connected to the fixing ring. The movable ring is movably connected to the surface of the fixing tube. Six pairs of fixing blocks are fixedly connected to the outer side of the fixing ring. The hinge rod is rotatably connected to the inner side of the fixing block. The support rod is rotatably connected to the inner side of the movable ring. The other end of the hinge rod is rotatably connected to the support rod. Two sets of first cylinders are fixedly installed on the surface of the fixing seat. The output end of the first cylinder is connected to the front and rear sides of the movable ring. A connecting hole is opened inside the fixing tube.
[0009] The present invention is further configured such that the driving assembly includes a second cylinder, a movable frame, a servo motor, a connecting rod, a slide rail, and a rotary joint. Two sets of second cylinders are fixedly installed inside the support frame. The output end of the second cylinder is fixedly connected to the movable frame. The servo motor is fixedly installed inside the movable frame. The output end of the servo motor is fixedly connected to the connecting rod. The connecting rod passes through a connecting hole inside the fixed tube. A slide rail is provided inside the support frame. A rotary joint is fixedly installed at the end of the connecting rod.
[0010] The present invention is further configured such that the drive assembly includes a third cylinder, a fixing plate and a polishing pad, three pairs of third cylinders are fixedly installed on the outer side of the rotary joint, the output end of the third cylinder is fixedly connected to the fixing plate, and the outer surface of the fixing plate is fixedly connected to the polishing pad.
[0011] The present invention is further configured such that a telescopic rod is provided between the two sets of the third cylinders, and the two ends of the telescopic rod are respectively connected to a rotary joint and a fixed plate, with the fixed plate located at the center.
[0012] The present invention is further configured such that the fixed ring has six sets of slots inside, the slots corresponding to the positions of the support rods, and the diameter of the fixed ring is twice that of the movable ring.
[0013] The present invention is further configured such that a positioning wheel is installed at the end of the support rod, and a protective pad is fixedly connected to the right side surface of the movable ring, wherein the positioning wheel and the protective pad are made of rubber.
[0014] Beneficial effects:
[0015] I. This utility model, through the setting of a fixed component, pushes the movable ring to drive the support rod to move towards the fixed ring. Under the rotational connection of the hinge rod, the support rod unfolds outward, which can realize the automatic clamping function for pipes with different inner diameters. It can complete the clamping of large-diameter inner wall pipes, small-diameter inner wall pipes and stepped inner wall pipes, and has a wide range of applications.
[0016] Second, this utility model uses a drive component to start the third cylinder, which drives the telescopic rod to adhere the polishing pad to the inner wall of the pipe. The diameter is adjusted according to the inner diameter of the pipe to be processed, so that the polishing pad is always in close contact with the inner wall of the pipe, thereby improving processing efficiency.
[0017] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the fixing component of this utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the drive component of this utility model;
[0021] Figure 4 This utility model Figure 3 Schematic diagram of the rotary joint structure;
[0022] Figure 5 This utility model Figure 2 A schematic diagram of the retracted state of the fixed component.
[0023] In the diagram: 1. Support frame; 2. Fixing base; 3. Placement rack; 4. PTFE pipe body; 5. Fixing assembly; 501. Fixing pipe; 502. Fixing ring; 503. Movable ring; 504. Fixing block; 505. Hinge rod; 506. Support rod; 507. First cylinder; 508. Connecting hole; 6. Drive assembly; 601. Second cylinder; 602. Movable frame; 603. Servo motor; 604. Connecting rod; 605. Slide rail; 606. Rotary joint; 607. Third cylinder; 608. Fixing plate; 609. Polishing pad; 610. Telescopic rod; 7. Slot; 8. Positioning wheel; 9. Protective pad. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] like Figure 1-5As shown, this utility model provides a technical solution: a polishing device for the inner wall of a PTFE-lined pipe, including a support frame 1 and a placement frame 3. A fixing seat 2 is fixedly installed on the upper side of the support frame 1, and a placement frame 3 is fixedly installed on the right side of the support frame 1. The PTFE pipe body 4 is placed inside the placement frame 3. A lifting mechanism is installed inside the placement frame 3 to facilitate the adjustment of the height of the PTFE pipe body 4 while providing auxiliary support, making it convenient for fixing and polishing. A fixing component 5 is provided on the right side of the fixing seat 2. Two sets of fixing components 5 can be symmetrically installed on both sides of the PTFE pipe body 4 to enhance the fixing effect. A driving component 6 is provided inside the support frame 1. The position and number of the fixing component 5 and the driving component 6 can be adjusted and added according to the specific usage.
[0026] like Figure 2 and Figure 5 As shown, the fixing assembly 5 includes a fixing tube 501, a fixing ring 502, a movable ring 503, a fixing block 504, a hinge rod 505, a support rod 506, a first cylinder 507, and a connecting hole 508. The fixing tube 501 is fixedly installed inside the fixing base 2. The fixing ring 502 is fixedly connected to the right end of the fixing tube 501. The movable ring 503 is movably connected to the surface of the fixing tube 501. Six pairs of fixing blocks 504 are fixedly connected to the outer side of the fixing ring 502. The hinge rod 505 is rotatably connected to the inner side of the fixing block 504. The inner side of the movable ring 503 is rotatably connected to the hinge rod 505. A support rod 506 is connected, and the other end of the hinge rod 505 is rotatably connected to the support rod 506. Two sets of first cylinders 507 are fixedly installed on the surface of the fixed base 2. The two sets of first cylinders 507 are installed inside the fixed base 2. The right end of the fixed tube 501 is located outside the fixed base 2. The output end of the first cylinder 507 is connected to the front and rear sides of the movable ring 503. The fixed base 2 has a hole inside that matches the output end of the first cylinder 507 so that the output end of the first cylinder 507 can pass through. The fixed tube 501 has a connecting hole 508 inside.
[0027] By activating the first cylinder 507, the movable ring 503 is pushed to move along the fixed pipe 501 to the fixed ring 502. Under the action of the hinge rod 505 rotating with the fixed block 504 and the support rod 506, the support rod 506 is extended outward, so that the end of the support rod 506 contacts the inner wall of the pipe, thereby supporting the inner wall of the pipe and preventing displacement during polishing.
[0028] like Figure 3 and Figure 4As shown, the drive assembly 6 includes a second cylinder 601, a movable frame 602, a servo motor 603, a connecting rod 604, a slide rail 605, and a rotary joint 606. Two sets of second cylinders 601 are fixedly installed inside the support frame 1. The two sets of second cylinders 601 are symmetrically installed around the servo motor 603. The output end of the second cylinder 601 is fixedly connected to the movable frame 602. The servo motor 603 is fixedly installed inside the movable frame 602. The output end of the servo motor 603 is fixedly connected to the connecting rod 604. The connecting rod 604 passes through the connecting hole 508 in the fixed tube 501. The slide rail 605 is opened inside the support frame 1. The rotary joint 606 is fixedly installed at the end of the connecting rod 604. By starting the second cylinder 601 according to the pipe length and polishing progress, the movable frame 602 is driven to move along the slide rail 605. At the same time, the servo motor 603 is started, which drives the connecting rod 604 and the rotary joint 606 to rotate, thus polishing the inner wall of the PTFE pipe body 4.
[0029] like Figure 3 and Figure 4 As shown, the drive assembly 6 also includes a third cylinder 607, a fixed plate 608, and a polishing pad 609. Three pairs of third cylinders 607 are fixedly installed on the outer side of the rotary joint 606. The output end of the third cylinder 607 is fixedly connected to the fixed plate 608. The outer surface of the fixed plate 608 is fixedly connected to the polishing pad 609. When the third cylinder 607 is activated, the polishing pad 609 on the surface of the fixed plate 608 comes into contact with the inner wall of the pipe. Under the rotation of the rotary joint 606, it is convenient to polish the inner wall of pipes with different inner diameters.
[0030] like Figure 3 and Figure 4 As shown, a telescopic rod 610 is provided between the two sets of third cylinders 607. The two ends of the telescopic rod 610 are connected to the rotary joint 606 and the fixed plate 608 respectively. The fixed plate 608 is located in the center position to improve the support effect. Through the inner telescopic rod 610, when the third cylinder 607 drives the fixed plate 608 to extend and retract, the telescopic rod 610 extends and retracts with the third cylinder 607, thereby improving the stability of the device.
[0031] like Figure 2 and Figure 5 As shown, the fixed ring 502 has six sets of slots 7 inside, which correspond to the positions of the support rod 506. The diameter of the fixed ring 502 is twice that of the movable ring 503. The size between the fixed ring 502 and the movable ring 503 ensures that the right end of the support rod 506 is always open, facilitating the outward expansion of the support rod 506 when the movable ring 503 moves, thus guiding the support rod 506. When the first cylinder 507 drives the movable ring 503 to reset, the support rod 506 is retracted under the action of the movable ring 503, causing the end of the support rod 506 to retract inside the slot 7, reducing storage space.
[0032] like Figure 2 and Figure 5 As shown, a positioning wheel 8 is installed at the end of the support rod 506 to prevent the end of the support rod 506 from directly contacting the inner wall of the pipe and causing wear to the inner wall. A protective pad 9 is fixedly connected to the right side surface of the movable ring 503. The positioning wheel 8 and the protective pad 9 are made of rubber. Under the action of the protective pad 9, the movable ring 503 is prevented from directly contacting the fixed ring 502, thereby improving the service life of the device. The rubber surface is provided with anti-slip texture. Through the buffering and anti-slip properties of rubber, the anti-slip texture can enhance its anti-slip effect. Moreover, the two-millimeter depth can ensure that the anti-slip texture still has an anti-slip effect after a certain degree of wear.
[0033] Working principle: When using, such as Figure 1 and Figure 2 As shown, first place the PTFE pipe body 4, which requires inner wall polishing, in the placement rack 3. Adjust the height of the PTFE pipe body 4 using the internal mechanism of the placement rack 3. After fixing it in place, as shown... Figure 2 and Figure 5 As shown, the first cylinder 507 is activated, pushing the movable ring 503 along the fixed pipe 501 to the fixed ring 502 at the designated position. Under the action of the hinge rod 505 rotating with the fixed block 504 and the support rod 506, the support rod 506 unfolds outward, causing the positioning wheel 8 at the end of the support rod 506 to contact the inner wall of the pipe, thus supporting and fixing the PTFE pipe body 4. Figure 3 and Figure 4 As shown, the third cylinder 607 is then activated, driving the telescopic rod 610 to bring the polishing pad 609 on the surface of the fixed plate 608 into contact with the inner wall of the pipe. Then, the servo motor 603 is activated, driving the connecting rod 604 and the rotary joint 606 to rotate. The rotation of the rotary joint 606 facilitates the polishing of the inner walls of pipes with different inner diameters. At the same time, the second cylinder 601 is activated according to the pipe length and polishing progress, driving the movable frame 602 to move along the slide rail 605 to polish the inner wall of the PTFE pipe body 4. The above is the complete working principle of this device.
[0034] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.
[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.
Claims
1. A polishing device for the inner wall of a PTFE-lined pipe, comprising a support frame (1) and a placement frame (3), characterized in that: A fixed seat (2) is fixedly installed on the upper side of the support frame (1), a placement frame (3) is fixedly installed on the right side of the support frame (1), a PTFE pipe body (4) is placed inside the placement frame (3), a fixing component (5) is provided on the right side of the fixed seat (2), and a driving component (6) is provided inside the support frame (1). The fixing assembly (5) includes a fixing tube (501), a fixing ring (502), a movable ring (503), a fixing block (504), a hinge rod (505), a support rod (506), a first cylinder (507), and a connecting hole (508). The fixing tube (501) is fixedly installed inside the fixing seat (2). The right end of the fixing tube (501) is fixedly connected to the fixing ring (502). The surface of the fixing tube (501) is movably connected to the movable ring (503). The outer side of the fixing ring (502) is fixedly connected to... The fixed base (2) is provided with six pairs of fixed blocks (504), and the inner side of the fixed blocks (504) is rotatably connected to a hinge rod (505). The inner side of the movable ring (503) is rotatably connected to a support rod (506). The other end of the hinge rod (505) is rotatably connected to the support rod (506). Two sets of first cylinders (507) are fixedly installed on the surface of the fixed base (2). The output end of the first cylinder (507) is connected to the front and rear sides of the movable ring (503). The fixed tube (501) has a connecting hole (508) inside. The drive assembly (6) includes a second cylinder (601), a movable frame (602), a servo motor (603), a connecting rod (604), a slide rail (605), and a rotary joint (606). Two sets of second cylinders (601) are fixedly installed inside the support frame (1). The output end of the second cylinder (601) is fixedly connected to the movable frame (602). The servo motor (603) is fixedly installed inside the movable frame (602). The output end of the servo motor (603) is fixedly connected to the connecting rod (604). The connecting rod (604) passes through the connecting hole (508) inside the fixed tube (501). The slide rail (605) is opened inside the support frame (1). The end of the connecting rod (604) is fixedly installed with a rotary joint (606).
2. The inner wall polishing device for a PTFE-lined pipe according to claim 1, characterized in that: The drive assembly (6) also includes a third cylinder (607), a fixing plate (608), and a polishing pad (609). Three pairs of third cylinders (607) are fixedly installed on the outer side of the rotary joint (606). The output end of the third cylinder (607) is fixedly connected to the fixing plate (608), and the outer surface of the fixing plate (608) is fixedly connected to the polishing pad (609).
3. The inner wall polishing device for a PTFE-lined pipe according to claim 2, characterized in that: A telescopic rod (610) is provided between the two sets of the third cylinders (607). The two ends of the telescopic rod (610) are connected to the rotary joint (606) and the fixed plate (608) respectively. The fixed plate (608) is located at the center.
4. The inner wall polishing device for a PTFE-lined pipe according to claim 1, characterized in that: The fixed ring (502) has six sets of slots (7) inside, and the slots (7) correspond to the positions of the support rod (506). The diameter of the fixed ring (502) is twice that of the movable ring (503).
5. The inner wall polishing device for a PTFE-lined pipe according to claim 1, characterized in that: The end of the support rod (506) is equipped with a positioning wheel (8), and the right side surface of the movable ring (503) is fixedly connected with a protective pad (9). The positioning wheel (8) and the protective pad (9) are made of rubber.