Multifunctional polishing equipment for PVC pipe

Abstract

Multifunctional polishing equipment for PVC pipes relates to the technical field of polishing devices and comprises two fixed end plates, hinge rods installed on the inner sides of the fixed end plates, polishing assemblies installed on the outer sides of the fixed end plates and walking structures arranged on the hinge rods, the two fixed end plates are oppositely arranged, and the corresponding hinge rods on the inner sides of the two fixed end plates are hinged to each other; walking wheels of the walking structure are in contact with the inner surface or the outer surface of the PVC pipe; a polishing wheel of the polishing assembly makes contact with the inner surface or the outer surface of the PVC pipe. The interior of the PVC pipe is polished through the polishing assembly; or the polishing assembly is used for polishing the outer part of the PVC pipe. And the interior or exterior of the pipeline is polished through the same polishing structure, and the practicability of the equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of polishing devices, in particular to a multifunctional polishing device for PVC pipes. Background Art

[0002] During the processing of PVC (polyvinyl chloride) pipes, the processing technology often causes burrs, flashes or uneven cross-sections inside and outside the PVC (polyvinyl chloride) pipes, affecting subsequent use.

[0003] For example, in the chemical and petroleum industries, when large-diameter PVC pipes are used to transport large amounts of corrosive liquids or high-purity chemical raw materials, in order to ensure that the quality of the fluid is not affected by impurities in the pipe wall and to reduce resistance during fluid transportation, the inner wall needs to be polished to obtain a smooth surface, reduce the friction coefficient, and improve transportation efficiency. For example, small-diameter PVC pipes are often used for circuit protection and insulation inside electronic equipment. Polishing its outer wall can make its appearance more neat and beautiful, while avoiding problems such as static electricity adsorption of dust caused by rough surfaces, and keeping the inside of electronic equipment clean. In addition, some small factories occasionally need to polish the outer wall of PVC pipes and the inner wall of PVC pipes. If manual polishing is used, it will be time-consuming, labor-intensive, and costly. If two polishing machines are purchased to polish the inner and outer pipes, the equipment cost will be high.

[0004] In order to improve the polishing quality and reduce the polishing cost, a multifunctional polishing device that can polish the inner and outer walls of PVC pipes is needed. Summary of the Invention

[0005] In view of the above problems, the present invention proposes a multifunctional polishing device for PVC pipes, characterized in that it includes a polishing structure installed on the inside or outside of the PVC pipe; The polishing structure includes a fixed end plate, a hinged rod installed on the inner side of the fixed end plate, a rotating mechanism movably installed on the outer side of the fixed end plate, a polishing assembly arranged on the outer side of the rotating mechanism, and a walking structure and a driving structure arranged on the hinged rod; The two fixed end plates are placed opposite to each other, and the corresponding hinged rods on the inner sides of the two fixed end plates are hinged to each other; the walking wheels of the walking structure are in contact with the inner surface or outer surface of the PVC pipe; the driving structure is in transmission connection with the rotating mechanism; the polishing wheel of the polishing assembly is in contact with the inner surface or outer surface of the PVC pipe; The rotating mechanism includes a first gear block and a second gear block of the same number, wherein the first gear blocks are assembled into a first gear ring which is in transmission connection with the driving structure; Or a second gear block is installed between adjacent first gear blocks, and the first gear block and the second gear block are assembled into a second gear ring that is transmission-connected to the driving structure.

[0006] Furthermore, the first gear block includes a first gear block body, a first tooth arranged on the outside of the first gear block body, a slide groove arranged at one end of the first gear block body away from the fixed end plate, and a circular hole arranged on the slide groove; a second tooth is arranged on the inside of the first gear block body, and adjacent second teeth are spliced ​​into a first gear ring.

[0007] Furthermore, the second gear block includes a second gear block body, a clamping block sliding in the groove of the second gear block body, a connecting plate fixed to the end of the second gear block body away from the fixed end plate, a limiting column fixed on the connecting plate, and a third tooth arranged on the outside of the second gear block body, the connecting plate is slidably installed in the slide groove, and the limiting column is slidably installed in the circular hole; the adjacent first teeth and third teeth are spliced ​​into a second gear ring.

[0008] Furthermore, the polishing assembly includes a fixed plate, a polishing wheel rotating on the fixed plate, and a third spring connecting the fixed plate and the first gear block. The fixed plate is rotatably mounted on the first gear block at one end away from the polishing wheel.

[0009] Furthermore, the walking structure includes a second drive motor, a sliding sleeve, a first spring installed in the sliding sleeve, a walking wheel rotatably installed at the end of the sliding rod of the sliding sleeve, and a third drive motor for driving the walking wheel. The second drive motor is fixedly installed on the side of the hinged rod, and its motor shaft is fixedly connected to the sliding sleeve; the third drive motor is fixedly connected to the sliding rod of the sliding sleeve.

[0010] Furthermore, the polishing device also includes a base structure and a clamping seat installed on the base structure, and the clamping seat is used to clamp the PVC pipe.

[0011] Furthermore, the base structure includes a first base and a second base rotatably connected to each other, a first slide rail arranged on the first base, and a second slide rail arranged on the second base; a clamping seat is slidably installed on both the first slide rail and the second slide rail.

[0012] Furthermore, the clamping seat includes a sliding seat, a first fixed circular plate arranged on the sliding seat, a limiting bracket, a clamping rod, a first clamping plate, a rotating plate rotatably installed on the inner side of the limiting bracket, a limiting groove arranged on the rotating plate and a driving device for driving the rotating plate. The sliding seat is slidably installed on the first slide rail or the second slide rail, and the inner end of the sliding seat is provided with a first fixed circular plate, and several of the clamping rods are slidably installed in the groove of the limiting bracket; and one end of the clamping rod is slidably connected to the limiting groove, and the other end is fixedly connected to the first clamping plate; the driving device is arranged on the outside of the first fixed circular plate, and the driving device is transmission-connected to the rotating plate.

[0013] Furthermore, the driving device includes a first driving motor fixedly mounted on the outside of a first fixed circular plate, a circular plate rotating on the first fixed circular plate, and an inner gear ring fixed on the circular plate, the inner gear ring meshing with the gear on the motor shaft of the first driving motor, and the circular plate and the rotating plate are fixedly connected via an axis.

[0014] Furthermore, the clamping seat also includes a second fixed circular plate fixedly installed in the middle of the limiting bracket, a first electric cylinder fixedly installed on one end of the second fixed circular plate close to the sliding seat, a second clamping plate, a connecting rod and a sliding rod slidably installed on the side of the second fixed circular plate away from the sliding seat, the outer side of the sliding rod is rotatably connected to the connecting rod, the end of the connecting rod away from the sliding rod is rotatably connected to the inner side of the second clamping plate, and the piston rod of the first electric cylinder is fixedly connected to the sliding rod.

[0015] Because the present invention adopts the above-mentioned technical solution, it has the following advantages: the polishing structure of the present invention includes a hinged rod, a walking structure, a polishing assembly, and a fixed end plate. The present invention has two working states: one is to place the polishing structure inside the PVC pipe, and the walking structure contacts the inside of the PVC pipe to move the polishing structure, and the polishing assembly polishes the inside of the PVC pipe; the other is to install the polishing structure on the outside of the PVC pipe, that is, to pass the PVC pipe through the hole in the middle of the polishing structure, and the walking structure contacts the outside of the PVC pipe, thereby driving the polishing structure to move, and the polishing assembly polishes the outside of the PVC pipe. This enables the same polishing structure to be used to polish the inside or outside of the pipe, thereby improving the practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of clamping a PVC pipe and polishing the inside of the PVC pipe according to the present invention.

[0017] Figure 2 It is a schematic diagram of clamping a PVC pipe and polishing the outside of the PVC pipe according to the present invention.

[0018] Figure 3 It is a schematic diagram of the first angle and partial enlargement of the structure of the clamping seat of the present invention.

[0019] Figure 4 It is a schematic diagram of the second angle and partial enlargement of the structure of the clamping seat of the present invention.

[0020] Figure 5 This is a schematic structural diagram of the polishing structure for polishing the exterior of a PVC pipe according to the present invention from a first angle.

[0021] Figure 6 This is a schematic diagram of the polishing structure for polishing the exterior of a PVC pipe from a second angle and with a partially enlarged portion.

[0022] Figure 7This is a schematic structural diagram of the polishing structure for polishing the interior of a PVC pipe according to the present invention.

[0023] Figure 8 This is a structural schematic diagram of the first angle of connection between the first gear block and the polishing assembly of the present invention.

[0024] Figure 9 This is a structural schematic diagram of the second angle of connection between the first gear block and the polishing assembly of the present invention.

[0025] Figure 10 This is a schematic diagram of the partial structure of the connection between the first gear block and the second gear block body of the present invention.

[0026] Figure 11 Schematic diagram of the control system of the present invention.

[0027] Reference numerals: 10, base structure; 101, first base; 102, first slide rail; 103, second base; 104, second slide rail; 20. Clamping seat; 201. Sliding seat; 202. First fixed circular plate; 203. Position limiting bracket; 204. Clamping rod; 205. First clamping plate; 206. Rotating plate; 207. Position limiting groove; 208. First drive motor; 209. Internal gear ring; 221. Second fixed circular plate; 222. First electric cylinder; 223. Second clamping plate; 224. Connecting rod; 225. Sliding rod. 30. Polishing structure; 31. Articulated rod; 311. Second electric cylinder; 32. Traveling structure; 321. Second drive motor; 322. Sliding sleeve; 323. First spring; 324. Traveling wheel; 325. Third drive motor; 33. Rotating mechanism; 331. First gear block; 3311. First gear block body; 3312. First tooth; 3313. Second tooth; 3314. Slide; 3315. Limiting slide; 3316. Circular hole; 332. Second gear block; 3321. Second gear block body; 3322. Third tooth; 3323. Second spring; 3324. Clamping block; 3325. Limiting column; 3326. Connecting plate; 34. Polishing assembly; 341. Fixed plate; 342. Polishing wheel; 343. Third spring; 35. Driving structure; 351. Servo motor; 352. Driving gear; 36. Fixed end plate; 40. PVC pipe. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be further specifically described below through examples and in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] In the description of the present invention, it should be noted that the terms "up", "down", "in", "out", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0030] Example: refer to Figure 5 A multifunctional PVC pipe polishing device includes a polishing structure 30, which is mounted on the inside or outside of a PVC pipe 40. The polishing structure 30 includes an articulated rod 31, a traveling structure 32, a polishing assembly 34, and a fixed end plate 36. Two fixed end plates 36 are positioned opposite each other, each having an articulated rod 31 slidably mounted on its inner side. The corresponding articulated rods 31 on the inner sides of the two fixed end plates 36 are hingedly connected to each other. The traveling structure 32 is mounted on the articulated rod 31. The traveling wheels 324 of the traveling structure 32 contact the inner or outer surface of the PVC pipe 40. The polishing assembly 34 is mounted on the outer side of the fixed end plate 36, and the polishing wheel 342 of the polishing assembly 34 contacts the inner or outer surface of the PVC pipe 40. A second electric cylinder 311 is provided on the side of the articulated rod 31. The corresponding second electric cylinders 311 are hingedly connected to each other. The extension of the second electric cylinder 311 causes the three articulated rods 31 to move outward.

[0031] The present invention has two working states. One is to place the polishing structure 30 inside the PVC pipe 40, and to drive the polishing structure 30 to move by contacting the inside of the PVC pipe 40 through the walking structure 32, and to polish the inside of the PVC pipe 40 through the polishing assembly 34.

[0032] Another method is to install the polishing structure 30 on the outside of the PVC pipe 40, that is, the PVC pipe 40 passes through the hole in the middle of the polishing structure 30, and the walking structure 32 contacts the outside of the PVC pipe 40, thereby driving the polishing structure 30 to move, and the polishing assembly 34 polishes the outside of the PVC pipe 40.

[0033] refer to Figure 6 The polishing structure 30 further includes a rotating mechanism 33 and a driving mechanism 35. The rotating mechanism 33 is movably mounted on the outside of a fixed end plate 36, and a polishing assembly 34 is mounted on the outside of the rotating mechanism 33. The driving mechanism 35 is fixedly mounted on the hinge rod 31 and is in transmission connection with the rotating mechanism 33. The driving mechanism 35 drives the rotating mechanism 33 and, in turn, the polishing assembly 34 to rotate, thereby completing the polishing of the inside or outside of the PVC pipe 40.

[0034] Furthermore, the rotating mechanism 33 includes the same number of first gear blocks 331 and second gear blocks 332, and the first gear blocks 331 are assembled into a first gear ring that is transmission-connected to the drive structure 35; specifically, the present invention is provided with 3 first gear blocks 331 and 3 second gear blocks 332, and the first gear ring is formed by splicing the 3 first gear blocks 331, and the first gear ring is engaged with the drive gear 352 of the drive structure 35.

[0035] Further, refer to Figure 6 Second gear blocks 332 are installed between adjacent first gear blocks 331. The first gear blocks 331 and the second gear blocks 332 form a second gear ring that is transmission-connected to the drive structure 35. Specifically, the present invention is provided with three first gear blocks 331 and three second gear blocks 332. The three first gear blocks 331 and the three second gear blocks 332 are spliced ​​together to form a second gear ring, which meshes with the drive gear 352 of the drive structure 35.

[0036] refer to Figure 8 The first gear block 331 includes a first gear block body 3311, a first tooth 3312 is provided on the outer side of the first gear block body 3311, a sliding groove 3314 is provided on the end of the first gear block body 3311 away from the fixed end plate 36, and a circular hole 3316 is provided on the sliding groove 3314 (refer to Figure 9 ); The second teeth 3313 are provided inside the first gear block body 3311, and the adjacent second teeth 3313 are spliced ​​together to form a first gear ring. Specifically, the second teeth 3313 of the three first gear blocks 331 are spliced ​​together to form a first gear ring, and the rod at the end of the hinge rod 31 is slidably installed in the limiting sliding groove 3315 near the second teeth 3313 (refer to Figure 9 ), the rod at the end of the hinged rod 31 can slide in the limiting sliding groove 3315, but cannot escape from the limiting sliding groove 3315.

[0037] refer to Figure 10 The second gear block 332 includes a second gear block body 3321, a third tooth 3322 is provided on the outer side of the second gear block body 3321, a clamping block 3324 is slidably installed in a groove on the second gear block body 3321, and a second spring 3323 is provided in the groove, and a connecting plate 3326 is provided at the end of the second gear block body 3321 away from the fixed end plate 36, and the connecting plate 3326 is slidably installed in the sliding groove 3314, and a limiting column 3325 is provided on the connecting plate 3326, and the limiting column 3325 is slidably installed in the circular hole 3316; the adjacent first teeth 3312 and third teeth 3322 are spliced ​​into a second gear ring (at this time, a rod at the end of the hinged rod 31 is slidably installed in the limiting sliding groove 3315 away from the second tooth 3313, as shown in FIG. Figure 10 As shown, the limiting sliding groove 3315 away from the second tooth 3313 and the limiting sliding groove on the second gear block body 3321 are spliced ​​into an annular groove).

[0038] The first gear block 3311 is locked in the locking cam 3321, and the second gear block 3311 is locked in the locking cam 3321. 1, so that the blocking block 3324 is no longer stuck in the second gear block 332, and then the second gear block 332 is manually removed, and then the first gear block 331 is moved toward the center of the fixed end plate 36, so that the second teeth 3313 of the three first gear blocks 331 are spliced ​​into a first gear ring, and then the rod at the end of the hinged rod 31 is slidably installed in the limiting groove 3315 near the second teeth 3313 (at this time, the limiting groove 3315 near the second teeth 3313 is spliced ​​into a circular groove).

[0039] refer to Figure 6 The polishing assembly 34 includes a fixed plate 341, a polishing wheel 342 and a third spring 343. One end of the fixed plate 341 is rotatably mounted on the first gear block 331, and the other end of the fixed plate 341 is provided with a polishing wheel 342 (the polishing wheel 342 can be equipped with a drive motor to drive the polishing wheel 342 to rotate, or the polishing wheel 342 can be rotatably mounted on the fixed plate 341, and the first gear ring or the second gear ring drives the polishing wheel 342 to rotate as a whole for polishing). The fixed plate 341 is connected to the first gear block 331 through the third spring 343. Specifically, the third spring 343 pulls the fixed plate 341, thereby causing the polishing wheel 342 to contact the outside of the PVC pipe 40 (such as Figure 6 As shown) or by pulling the fixing plate 341 through the third spring 343, so that the polishing wheel 342 contacts the inner side of the PVC pipe 40 (as shown Figure 7 shown).

[0040] refer to Figure 6 The walking structure 32 includes a second drive motor 321, a sliding sleeve 322, a first spring 323 installed in the sliding sleeve 322, a walking wheel 324 and a third drive motor 325. The second drive motor 321 is fixedly installed on the side of the hinged rod 31, and its motor shaft is fixedly connected to the sliding sleeve 322; the sliding rod end of the sliding sleeve 322 is rotatably installed with the walking wheel 324, the third drive motor 325 is fixedly connected to the sliding rod of the sliding sleeve 322, and the third drive motor 325 is transmission-connected to the walking wheel 324. A first spring 323 is provided inside the sliding sleeve 322, and the first spring 323 is used to drive the sliding rod of the sliding sleeve 322 to move outward. Specifically, the walking wheel 324 is driven by the first spring 323 to contact the outside of the PVC pipe 40 (such as Figure 6 ) or in contact with the inner side of the PVC tube 40 (e.g. Figure 7 ), the third driving motor 325 drives the walking wheel 324 to drive the polishing structure 30 to move, and the second driving motor 321 drives the walking wheel 324 to contact the outside of the PVC pipe 40 (such as Figure 6 ) or in contact with the inner side of the PVC tube 40 (e.g. Figure 7 ) switch.

[0041] refer to Figure 2 The polishing apparatus further includes a base structure 10, on which is mounted a clamping seat 20 for clamping a PVC pipe 40. The base structure 10 includes a first base 101 and a second base 103, with the second base 103 being rotatably mounted on the first base 101. A first slide rail 102 is provided on the first base 101, and a second slide rail 104 is provided on the second base 103. The clamping seat 20 is slidably mounted on both the first slide rail 102 and the second slide rail 104. Specifically, the relative rotation between the second base 103 and the first base 101 allows the PVC pipe 40 to be clamped at an angle, thereby achieving polishing of the PVC pipe 40.

[0042] refer to Figure 3 and Figure 4 The clamping seat 20 includes a sliding seat 201, a first fixed circular plate 202 arranged on the sliding seat 201, a limiting bracket 203, a clamping rod 204, a first clamping plate 205, a rotating plate 206 on the inner side of the limiting bracket 203, a limiting groove 207 arranged on the rotating plate 206 and a driving device for driving the rotating plate 206. The sliding seat 201 is slidably mounted on the first slide rail 102 or the second slide rail 104. The inner end of the sliding seat 201 is provided with a first fixed circular plate 202, and several of the clamping rods 204 are slidably mounted in the groove of the limiting bracket 203; and one end of the clamping rod 204 is connected to the limiting groove 207 (the limiting groove 207 is arc-shaped, refer to Figure 3 ) is slidably connected, and the other end is fixedly connected to the first clamping plate 205; the driving device is disposed outside the first fixed circular plate 202 and is in transmission connection with the rotating plate 206. The driving device includes a first driving motor 208 fixedly mounted outside the first fixed circular plate 202, a circular plate that rotates on the first fixed circular plate 202, and an internal gear ring 209 fixed to the circular plate. The internal gear ring 209 meshes with a gear on the motor shaft of the first driving motor 208. The circular plate and the rotating plate 206 are fixedly connected via a shaft.

[0043] Specifically, the first drive motor 208 drives the gear on the motor shaft of the first drive motor 208, thereby driving the inner gear ring 209 to rotate. The inner gear ring 209 is fixedly connected to the circular plate rotating on the first fixed circular plate 202. The circular plate on the first fixed circular plate 202 is fixedly connected to the rotating plate 206 through an axis, thereby driving the rotating plate 206 to rotate. The rotation of the rotating plate 206 drives the clamping rod 204 in the limiting groove 207, thereby driving the clamping rod 204 and the first clamping plate 205 to move toward the middle, clamping both ends of the PVC pipe 40 (such as Figure 1 shown).

[0044] refer to Figure 3 The clamping seat 20 also includes a second fixed circular plate 221, a first electric cylinder 222, a second clamping plate 223, a connecting rod 224 and a sliding rod 225. The second fixed circular plate 221 is fixedly installed in the middle of the limiting bracket 203, and the sliding rod 225 is slidably installed on the side of the second fixed circular plate 221 away from the sliding seat 201. The outer side of the sliding rod 225 is rotatably connected to the connecting rod 224. The end of the connecting rod 224 away from the sliding rod 225 is rotatably connected to the inner side of the second clamping plate 223. The end of the second fixed circular plate 221 close to the sliding seat 201 is provided with a first electric cylinder 222, and the piston rod of the first electric cylinder 222 is fixedly connected to the sliding rod 225. Specifically, the first electric cylinder 222 contracts, thereby driving the sliding rod 225 to move toward the sliding seat 201, thereby driving the second clamping plate 223 to move away from the sliding rod 225, so that the second clamping plate 223 presses against the inner and outer sides of both ends of the PVC pipe 40, thereby achieving the clamping of the PVC pipe 40 (such as Figure 2 shown).

[0045] This embodiment also includes a control system, such as Figure 11 As shown, the control system includes a main controller, a human-computer interaction display screen, an information transmission module, a storage module and a power supply module, and the main controller is electrically connected to the human-computer interaction display screen, the information transmission module, the storage module, the power supply module, the first drive motor 208, the first electric cylinder 222, the second electric cylinder 311, the second drive motor 321, the third drive motor 325 and the servo motor 351 as well as the camera in the visual detection system; the camera in the visual detection system is installed on the hinged rod 31 and is used to determine whether the polishing of the PVC pipe 40 is qualified; the main controller is used to control the operation of the entire polishing device; the human-computer interaction display screen is used to set the rotation speed of the walking wheel 324, thereby driving the moving speed of the polishing structure 30, setting the working speed of the servo motor 351, thereby driving the rotation speed of the rotating mechanism 33 and the polishing speed of the polishing wheel 342; and automatic operation control after determining the set value; the information transmission module is used for information transmission between the main controller and the base structure 10, the clamping seat 20 and the polishing structure 30; the power supply module is used to provide a stable power supply to the control end; and the storage module is used to store the operation information data of the entire silencer.

[0046] Working principle: The present invention is directed to polishing the inner wall of a PVC pipe 40 having a larger diameter: First, the polishing wheel 342 is rotated outward, so that the polishing wheel 342 contacts the inner wall of the PVC pipe 40. Then, the second drive motor 321 drives the sliding sleeve 322 to contact the inner wall of the PVC pipe 40. The third drive motor 325 drives the traveling wheel 324 to move the polishing structure 30 inside the PVC pipe 40. The polishing structure 30 is placed inside the PVC tube 40, and then the two ends of the PVC tube 40 are placed between the sliding seats 201 respectively, and the PVC tube 40 is placed between the first clamping plates 205. The first drive motor 208 drives the rotating plate 206 to rotate, so that the first clamping plate 205 clamps the two ends of the PVC tube 40; then the servo motor 351 drives the driving gear 352 and then drives the first gear ring of the rotating mechanism 33 to rotate, and the first gear ring drives the polishing wheel 342 to rotate, so that the polishing wheel 342 polishes the inside of the PVC tube 40. The two hinged rods 31 are hinged, so that it is suitable for curved PVC tubes 40.

[0047] When polishing the outer wall of a PVC pipe 40 with a smaller diameter, the PVC pipe 40 is passed through the middle of the polishing structure 30. First, the polishing wheel 342 is rotated inward, so that the polishing wheel 342 contacts the outer wall of the PVC pipe 40. Then, the second driving motor 321 drives the sliding sleeve 322 to contact the outer wall of the PVC pipe 40. The third driving motor 325 drives the traveling wheel 324 to move the polishing structure 30 outside the PVC pipe 40. The PVC tube 40 is placed outside the polishing structure 30, and then the two ends of the PVC tube 40 are placed on the outside of the second clamping plate 223 respectively. The sliding rod 225 is driven by the first electric cylinder 222 to move so that the second clamping plate 223 clamps the inside of the two ends of the PVC tube 40; then the servo motor 351 drives the driving gear 352 and then drives the second gear ring of the rotating mechanism 33 to rotate, and the second gear ring drives the polishing wheel 342 to rotate, so that the polishing wheel 342 polishes the outer wall of the PVC tube 40. The two hinged rods 31 are hinged, so that it is suitable for curved PVC tubes 40.

Claims

1. A multifunctional polishing device for PVC pipes, characterized in that: It includes a polishing structure, which is installed on the inside or outside of the PVC pipe; The polishing structure includes a fixed end plate, a hinged rod installed on the inner side of the fixed end plate, a rotating mechanism movably installed on the outer side of the fixed end plate, a polishing assembly arranged on the outer side of the rotating mechanism, and a walking structure and a driving structure arranged on the hinged rod; The two fixed end plates are placed opposite to each other, and the corresponding hinged rods on the inner sides of the two fixed end plates are hinged to each other; the walking wheels of the walking structure are in contact with the inner surface or outer surface of the PVC pipe; the driving structure is in transmission connection with the rotating mechanism; the polishing wheel of the polishing assembly is in contact with the inner surface or outer surface of the PVC pipe; The rotating mechanism includes a first gear block and a second gear block of the same number, wherein the first gear blocks are assembled into a first gear ring which is in transmission connection with the driving structure; Or a second gear block is installed between adjacent first gear blocks, and the first gear block and the second gear block are assembled into a second gear ring that is transmission-connected to the driving structure.

2. A multifunctional PVC pipe polishing device according to claim 1, characterized in that: The first gear block includes a first gear block body, a first tooth arranged on the outside of the first gear block body, a slide groove arranged at one end of the first gear block body away from the fixed end plate, and a circular hole arranged on the slide groove; a second tooth is arranged on the inside of the first gear block body, and adjacent second teeth are spliced ​​into a first gear ring.

3. A multifunctional PVC pipe polishing device according to claim 2, characterized in that: The second gear block includes a second gear block body, a clamping block sliding in the groove of the second gear block body, a connecting plate fixed to the end of the second gear block body away from the fixed end plate, a limiting column fixed on the connecting plate, and a third tooth arranged on the outside of the second gear block body. The connecting plate is slidably installed in the slide groove, and the limiting column is slidably installed in the circular hole; the adjacent first teeth and third teeth are spliced ​​into a second gear ring.

4. A multifunctional polishing device for PVC pipes according to any one of claims 1 to 3, characterized in that: The polishing assembly includes a fixed plate, a polishing wheel rotating on the fixed plate, and a third spring connecting the fixed plate and the first gear block. The fixed plate is rotatably mounted on the first gear block at one end away from the polishing wheel.

5. The multifunctional polishing device for PVC pipes according to claim 1, characterized in that: The walking structure includes a second drive motor, a sliding sleeve, a first spring installed in the sliding sleeve, a walking wheel rotatably installed at the end of the sliding rod of the sliding sleeve, and a third drive motor for driving the walking wheel. The second drive motor is fixedly installed on the side of the hinged rod, and its motor shaft is fixedly connected to the sliding sleeve; the third drive motor is fixedly connected to the sliding rod of the sliding sleeve.

6. The multifunctional polishing device for PVC pipes according to claim 1, characterized in that: The polishing device further comprises a base structure and a clamping seat installed on the base structure, wherein the clamping seat is used for clamping the PVC pipe.

7. The multifunctional polishing device for PVC pipes according to claim 6, characterized in that: The base structure includes a first base and a second base rotatably connected to each other, a first slide rail arranged on the first base, and a second slide rail arranged on the second base; a clamping seat is slidably installed on both the first slide rail and the second slide rail.

8. The multifunctional polishing device for PVC pipes according to claim 7, characterized in that: The cam is secured to the outside of the chassis and is adapted to engage the first and second guide rails of the vehicle frame, wherein the cam is secured to the outside of the chassis and is adapted to engage the first and second guide rails of the vehicle frame.

9. The multifunctional polishing device for PVC pipes according to claim 8, characterized in that: The driving device includes a first driving motor fixedly mounted on the outside of a first fixed circular plate, a circular plate rotating on the first fixed circular plate, and an inner gear ring fixed on the circular plate, the inner gear ring is engaged with a gear on a motor shaft of the first driving motor, and the circular plate is fixedly connected to the rotating plate via a shaft.

10. The multifunctional polishing device for PVC pipes according to claim 8, characterized in that: The clamping seat also includes a second fixed circular plate fixedly installed in the middle of the limiting bracket, a first electric cylinder fixedly installed on the second fixed circular plate near one end of the sliding seat, a second clamping plate, a connecting rod and a sliding rod slidably installed on the second fixed circular plate away from the sliding seat. The outer side of the sliding rod is rotatably connected to the connecting rod, and the end of the connecting rod away from the sliding rod is rotatably connected to the inner side of the second clamping plate, and the piston rod of the first electric cylinder is fixedly connected to the sliding rod.

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