CN220260511U

CN220260511U - Fin tube polishing device

Info

Publication number: CN220260511U
Application number: CN202321786162.3U
Authority: CN
Inventors: 黄荣攀; 晁航; 陈少龙; 庄庆澳
Original assignee: Jiangsu Changlong Pipe Industry Co ltd
Current assignee: Jiangsu Changlong Pipe Industry Co ltd
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2023-12-29
Anticipated expiration: 2033-07-07

Abstract

The application provides a fin pipe burnishing device relates to pipe processing grinding device's field, including stop gear, stop gear includes first driving piece, the support, the slide bar, a spring, first connecting seat, first locating part, second connecting seat and second locating part, first driving piece sets firmly in the frame, first driving piece is connected with the support, the slide bar slides and wears to locate the support, first connecting seat and slide bar rigid coupling, the slide bar outside is located to the spring housing, first locating part rotates to locate on the first connecting seat, the second connecting seat sets firmly in the frame, the second locating part rotates to locate on the second connecting seat. The second limiting piece can support the fin tube, and the first limiting piece can be clung to the outer side wall of the fin tube under the pressure action of the spring, so that a good limiting effect is achieved on the fin tube, and the radial runout of the fin tube in the polishing process is effectively relieved.

Description

Fin tube polishing device

Technical Field

The application relates to the field of tube processing polishing devices, in particular to a fin tube polishing device.

Background

The fin tube is a tube type for increasing a heating surface (or radiating heat) and improving heat transfer efficiency, and is widely used in production and life in face of the current production pace of increasingly pursuing high efficiency.

In the process of processing the fin tube, the fin (fin) is usually fixedly connected on the wall of the fin tube light tube by using the light tube in a welding mode, so that the contact area between the tube body and the outside is increased, the heating surface (or heat dissipation) is increased, and the heat transfer rate is improved. Therefore, in the process of preprocessing the fin tube body, how to ensure the surface quality of the tube body becomes a main factor for limiting the product yield and the product quality. In the process of preprocessing the fin tube, the fin tube is required to be conveyed to the polishing device through the conveying device to be polished, the fin tube moves along the axis direction of the fin tube in the conveying process and rotates around the axis of the fin tube, however, because the distance between the conveying device and the polishing device is long, one end of the fin tube in the conveying direction is long from the conveying device (namely, the supporting limit position of the fin tube), and meanwhile, when the polishing device polishes the fin tube, a friction force in the tangential direction is applied to the fin tube, so that in the process of polishing the fin tube, one end of the tube continuously generates larger radial runout, uneven polishing of the tube surface is caused, and the processing quality and subsequent processing of the tube surface are affected.

Disclosure of Invention

The utility model aims to provide a fin tube polishing device for solve the problem that the radial runout of the tube body that the fin tube exists in the polishing and grinding process influences the tube face processingquality.

The fin tube polishing device adopts the following technical scheme:

the polishing mechanism is arranged on the frame and used for polishing the outer peripheral wall of the fin tube, the polishing mechanism further comprises a limiting mechanism, the limiting mechanism comprises a first driving piece, a support, a sliding rod, a spring, a first limiting piece, a first connecting seat, a second limiting piece and a second limiting piece, the first driving piece is fixedly arranged on the frame, the first driving piece is connected with the support, the first driving piece is used for driving the support to lift, the sliding rod is slidably arranged on the support in a penetrating manner, the first connecting seat is fixedly connected with the sliding rod, the spring is sleeved on the outer side of the sliding rod, two ends of the spring are respectively applied to the support and the first connecting seat, the first limiting piece is rotatably arranged on the first connecting seat, the first limiting piece is used for being in butt joint with the outer side wall of the fin tube, the second connecting seat is fixedly arranged on the frame, the second limiting piece is rotatably arranged on the second connecting seat, and the second limiting piece is used for supporting the fin tube.

Through adopting above-mentioned technical scheme, can carry out the bearing to the fin pipe through the second locating part, can make first locating part hug closely the lateral wall of fin pipe under the pressure effect of spring to play better spacing effect to the fin pipe, effectively alleviate the condition that the fin pipe radially beats in polishing process.

Optionally, the first locating part is the spheroid, the first connecting seat be equipped with the shape with the first recess of first locating part looks adaptation, first locating part rotation card is located in the first recess, the second locating part is the spheroid, the second connecting seat be equipped with the shape with the second recess of second locating part looks adaptation, the second locating part rotation card is located in the second recess.

By adopting the technical scheme, the first limiting piece and the second limiting piece are both arranged to be freely rolling spheres, so that sliding friction between the first limiting piece and the fin tube and sliding friction between the second limiting piece and the fin tube are reduced, and abrasion is further reduced.

Optionally, the polishing device further comprises a polishing bin, a first bin gate, a second bin gate and a plurality of groups of translation components, wherein the polishing bin is fixedly arranged on the frame, the first bin gate and the second bin gate can be opened and closed to be arranged on the polishing bin, the polishing mechanism is arranged in the polishing bin and is provided with a plurality of groups, the translation components are arranged on the frame and are respectively in one-to-one correspondence with the polishing mechanisms, the translation components are respectively connected with the polishing mechanisms, and when the second bin gate is opened, the translation components can drive the polishing mechanisms to move relative to the polishing bin.

Through adopting above-mentioned technical scheme, when one of them a set of polishing mechanism breaks down, opens the second door, and accessible translation subassembly can shift out the polishing storehouse with the polishing mechanism that breaks down and overhaul, and the remaining polishing mechanism can normally work this moment to can not cause interference and delay to the normal polishing operation of fin pipe.

Optionally, the first door is equipped with many, and is many the position of first door respectively with multiunit polishing mechanism one-to-one, be equipped with the sight hole on the first door, the sight hole department of first door has set firmly the transparent plate.

By adopting the technical scheme, the polishing condition of the fin tube can be observed through the transparent plate, and the polishing mechanism can be overhauled after the first bin gate is opened, or the polishing quality of the fin tube can be detected.

Optionally, the polishing mechanism includes slide, polishing motor, swing arm, swing cylinder, connecting rod, first rotatory roller, second rotatory roller, third rotatory roller and polishing area, the slide is slided and is located in the frame, translation subassembly with the slide is connected, the swing arm with the slide is articulated, the swing cylinder sets firmly on the slide, the both ends of connecting rod respectively with the first piston rod of swing cylinder with the swing arm articulates, first rotatory roller, second rotatory roller and third rotatory roller rotate and locate on the swing arm, the polishing motor set firmly in on the slide, and with first rotatory roller is connected, the polishing motor is used for the drive first rotatory roller rotates, the polishing area is around locating first rotatory roller, second rotatory roller and third rotatory roller outside.

Through adopting above-mentioned technical scheme, through the flexible of control swing cylinder first piston rod, can drive the swing arm and rotate, and then adjust the angle of polishing area, make polishing area and the lateral wall contact of fin pipe or separation.

Optionally, the translation subassembly includes mobile motor, lead screw and casing, the casing set firmly in the frame, the lead screw rotates to be located in the casing, mobile motor set firmly in on the casing, and with the lead screw is connected, mobile motor is used for the drive the lead screw rotates, the slide is slided and is located on the casing, the slide is equipped with the screw, the slide pass through the screw with lead screw spiro union.

Through adopting above-mentioned technical scheme, can drive the lead screw through the movable motor and rotate, can drive the slide through the lead screw and remove along the casing to can adjust polishing mechanism's position, be convenient for overhaul operation such as polishing mechanism.

Optionally, the polishing mechanism further comprises a tensioning cylinder and an adjusting seat, the adjusting seat is slidably arranged on the swing arm, the second rotating roller is rotatably arranged on the adjusting seat, the tensioning cylinder is fixedly arranged on the swing arm and connected with the adjusting seat, and the tensioning cylinder is used for driving the adjusting seat to slide along the swing arm.

Through adopting above-mentioned technical scheme, through the tensioning degree of tensioning cylinder adjustable polishing area, avoid polishing area pine to take off.

Optionally, the limiting mechanisms are provided with a plurality of groups, and each group of limiting mechanisms is respectively located between adjacent polishing mechanisms.

By adopting the technical scheme, the limiting mechanisms are arranged into a plurality of groups, so that different parts of the fin tube are limited in the polishing process, and the shake of the fin tube in the polishing process is reduced.

In summary, the present application includes at least one of the following beneficial technical effects: when the fin tube is polished, the fin tube can be supported through the second limiting piece, the support, the first connecting seat and the first limiting piece are driven to move downwards through the first driving piece, the first limiting piece is abutted to the outer side wall of the fin tube, after the first limiting piece is abutted to the outer side wall of the fin tube, the spring is in a compressed state, and the first limiting piece can be tightly attached to the outer side wall of the fin tube under the action of the pressure of the spring, so that a good limiting effect is achieved on the fin tube, the radial runout of the fin tube in the polishing process is effectively relieved, the polishing uniformity of the tube surface is effectively improved, and the influence on the subsequent tube surface processing quality is reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present application;

FIG. 2 is a schematic view of the structure of the present application with the first door omitted;

FIG. 3 is an enlarged schematic view of a portion A of FIG. 2;

FIG. 4 is a schematic structural view of a polishing mechanism;

FIG. 5 is a cross-sectional view of the present application;

fig. 6 is a partially enlarged schematic view of the portion B in fig. 5.

In the drawing the view of the figure,

1. a frame; 2. a polishing mechanism; 201. a slide; 202. polishing a motor; 2021. an output shaft; 203. swing arms; 2031. a guide rod; 204. a swing cylinder; 2041. a first piston rod; 205. a connecting rod; 2051. a sleeve; 206. a first rotating roller; 207. a second rotating roller; 208. a third rotating roller; 2081. a rotating shaft; 209. polishing the belt; 210. a tensioning cylinder; 2101. a second piston rod; 211. an adjusting seat; 2111. a slide block; 212. a sliding sleeve; 213. a chute;

3. a limiting mechanism; 31. a first driving member; 311. a third piston rod; 32. a support; 33. a slide bar; 331. an anti-drop plate; 34. a spring; 35. a first connection base; 36. a first limiting member; 37. a second connecting seat; 38. a second limiting piece;

4. a translation assembly; 41. a moving motor; 42. a housing;

5. a polishing bin; 51. a through hole; 6. a first bin gate; 61. a viewing aperture; 62. a transparent plate; 7. and a second bin gate.

Detailed Description

The present application is described in further detail below with reference to fig. 1-6.

The embodiment of the application discloses a fin tube polishing device.

Referring to fig. 1 and 2, the fin tube polishing device comprises a frame 1, a polishing mechanism 2, a limiting mechanism 3, a polishing bin 5, a first bin door 6, a second bin door 7 and a plurality of groups of translation assemblies 4, wherein the polishing mechanism 2 is arranged on the frame 1, and the outer peripheral wall of a fin tube can be polished through the polishing mechanism 2, so that the tube surface quality of the fin tube is improved, and the processing of a fin tube subsequent process is facilitated. In the process of polishing the fin tube through the polishing mechanism 2, the fin tube needs to be conveyed along the axial direction through external conveying equipment, and in the conveying and moving process of the fin tube, the fin tube can be limited through the limiting mechanism 3, so that the radial runout condition of the fin tube in the polishing process is reduced.

Referring to fig. 3, the specific structure of the limiting mechanism 3 and the principle of limiting the fin tube are as follows: the limiting mechanism 3 comprises a first driving piece 31, a support 32, a sliding rod 33, a spring 34, a first connecting seat 35, a first limiting piece 36, a second connecting seat 37 and a second limiting piece 38, wherein the first driving piece 31 is fixedly arranged on the frame 1, the first driving piece 31 is connected with the support 32, the first driving piece 31 is used for driving the support 32 to lift, a lifting cylinder can be adopted for the first driving piece 31, and a third piston rod 311 of the lifting cylinder is fixedly connected with the support 32. The slide bar 33 slides and wears to locate support 32, and first connecting seat 35 and slide bar 33 rigid coupling, and the spring 34 cover is located the slide bar 33 outside, and the both ends of spring 34 are respectively with support 32 and first connecting seat 35 butt, and slide bar 33 is equipped with the anticreep board 331 that prevents to break away from with support 32. The first limiting piece 36 is rotatably arranged on the first connecting seat 35, the second connecting seat 37 is fixedly arranged on the frame 1, and the second limiting piece 38 is rotatably arranged on the second connecting seat 37. When the fin tube is polished, the second limiting piece 38 can support the fin tube, and the first driving piece 31 drives the support 32, the first connecting seat 35 and the first limiting piece 36 to move downwards, so that the first limiting piece 36 is abutted with the outer side wall of the fin tube, and after the first limiting piece 36 is abutted with the outer side wall of the fin tube, the spring 34 is in a compressed state, and under the pressure of the spring 34, the first limiting piece 36 can be tightly attached to the outer side wall of the fin tube, so that a good limiting effect is achieved, and the radial runout of the fin tube in the polishing process is relieved.

Referring to fig. 2 and 3, the first limiting member 36 may be configured as a sphere, for reducing friction and wear suffered by the fin tube, the first connecting seat 35 is provided with a first groove with a shape adapted to that of the first limiting member 36, the first limiting member 36 is rotationally clamped in the first groove, and the first limiting member 36 can freely roll in the first groove. The second limiting piece 38 is a sphere, the second connecting seat 37 is provided with a second groove with a shape matched with that of the second limiting piece 38, the second limiting piece 38 is rotationally clamped in the second groove, and the second limiting piece 38 can freely roll in the second groove. The first spacing member 36 and the second spacing member 38 may be arranged in two rows, respectively, to provide a better spacing for the fin tube and prevent the fin tube from slipping off the first spacing member 36 and the second spacing member 38. Because the fin tube can axially move and circumferentially rotate simultaneously under the action of external conveying equipment in the polishing process, the first limiting piece 36 and the second limiting piece 38 are both arranged as freely-rolling spheres, so that sliding friction between the first limiting piece 36 and the fin tube and sliding friction between the second limiting piece 38 and the fin tube are reduced, and abrasion is further reduced.

The limiting mechanisms 3 can be arranged into a plurality of groups, and each group of limiting mechanisms 3 is respectively positioned between the adjacent polishing mechanisms 2, so that different parts of the fin tube are limited in the polishing process, and the shaking of the fin tube in the polishing process is reduced to a greater extent.

Referring to fig. 2 and 4, the polishing mechanism 2 includes a slide 201, a polishing motor 202, a swing arm 203, a swing cylinder 204, a connecting rod 205, a first rotating roller 206, a second rotating roller 207, a third rotating roller 208, a polishing belt 209, a tensioning cylinder 210 and an adjusting seat 211, the slide 201 is slidably disposed on the frame 1, the translation assembly 4 is connected with the slide 201, and the specific structure of the translation assembly 4 and the specific connection relationship with the slide 201 are as follows:

referring to fig. 5 and 6, the translation assembly 4 includes a moving motor 41, a screw and a casing 42, the casing 42 is fixedly arranged on the frame 1, the screw is rotationally arranged in the casing 42, the moving motor 41 is fixedly arranged on the casing 42 and connected with the screw, the moving motor 41 is used for driving the screw to rotate, the sliding seat 201 is slidingly arranged on the casing 42, the sliding seat 201 is provided with a screw hole, and the sliding seat 201 is in threaded connection with the screw through the screw hole. The screw is driven to rotate by the moving motor 41, and the slide 201 is driven to move along the casing 42 by the screw.

Referring to fig. 2 and 4, a swing arm 203 is hinged to a slide 201, a swing cylinder 204 is fixedly arranged on the slide 201, two ends of a connecting rod 205 are respectively hinged to a first piston rod 2041 of the swing cylinder 204 and the swing arm 203, a first rotating roller 206, a second rotating roller 207 and a third rotating roller 208 are rotatably arranged on the swing arm 203, a polishing motor 202 is fixedly arranged on the slide 201 and connected with the first rotating roller 206, the first rotating roller 206 can be driven to rotate by the polishing motor 202, and a polishing belt 209 is wound on the outer sides of the first rotating roller 206, the second rotating roller 207 and the third rotating roller 208, and the polishing motor 202 can drive the first rotating roller 206 to rotate so as to drive the polishing belt 209 to operate to polish a fin tube.

The specific hinge relationship between the swing arm 203 and the slider 201 is as follows: an output shaft 2021 of the polishing motor 202 is rotatably arranged on the sliding seat 201, and the swing arm 203 is rotatably hinged with the output shaft 2021. The specific articulation of the link 205 with the swing arm 203 is as follows: the third rotary roller 208 is rotatably disposed on the swing arm 203 through a rotary shaft 2081, one end of the connecting rod 205 is provided with a sleeve 2051, and the sleeve 2051 is rotatably sleeved outside the rotary shaft 2081.

By controlling the expansion and contraction of the first piston rod 2041 of the swing cylinder 204, the swing arm 203 can be driven to rotate around the axis of the output shaft 2021, and the angle of the polishing belt 209 can be adjusted, so that the polishing belt 209 is contacted with or separated from the side wall of the fin tube.

Referring to fig. 2 and 4, a sliding groove 213 is formed in the swing arm 203, a sliding block 2111 is formed in the adjusting seat 211, the sliding block 2111 is slidably clamped in the sliding groove 213, a guide rod 2031 is formed in the swing arm 203, a sliding sleeve 212 is arranged on the sliding block 2111, the sliding sleeve 212 is slidably sleeved on the outer side of the guide rod 2031, and the guiding and limiting effects are achieved on the adjusting seat 211. The second rotating roller 207 is rotatably arranged on the adjusting seat 211, the tensioning cylinder 210 is fixedly arranged on the swing arm 203, the second piston rod 2101 of the tensioning cylinder 210 is fixedly connected with the adjusting seat 211, and the adjusting seat 211 can be driven to slide along the sliding groove 213 through the tensioning cylinder 210, so that the distance between the second rotating roller 207 and the third rotating roller 208 is adjusted, the tensioning degree of the polishing belt 209 is controlled, and the polishing belt 209 is prevented from loosening.

Referring to fig. 1 and 2, a polishing bin 5 is fixedly arranged on a frame 1, a first bin door 6 and a second bin door 7 can be opened and closed on the polishing bin 5, a polishing mechanism 2 is positioned in the polishing bin 5, and flying scraps and noise generated in the polishing process of a fin tube can be blocked and isolated through the polishing bin 5. The first bin gate 6 is provided with a plurality of first bin gates 6, the positions of the plurality of first bin gates 6 are respectively in one-to-one correspondence with the plurality of groups of polishing mechanisms 2, the first bin gate 6 is provided with a viewing window hole 61, a transparent plate 62 is fixedly arranged at the viewing window hole 61 of the first bin gate 6, the transparent plate 62 can be made of glass fiber reinforced plastic materials, the polishing condition of the fin tube can be observed through the transparent plate 62, and the polishing mechanism 2 can be overhauled after the first bin gate 6 is opened, or the polishing quality of the fin tube can be detected.

Referring to fig. 1 and 2, the polishing mechanism 2 is provided with a plurality of groups, a plurality of groups of translation assemblies 4 are arranged on the frame 1 and respectively correspond to the plurality of groups of polishing mechanisms 2 one by one, the plurality of groups of translation assemblies 4 are respectively connected with the plurality of groups of polishing mechanisms 2, and when the second bin door 7 is opened, the translation assemblies 4 can drive the polishing mechanism 2 to move relative to the polishing bin 5. Since the polishing mechanisms 2 are provided with a plurality of groups, when one group fails, the second bin door 7 is opened, the failed polishing mechanism 2 can be moved out of the polishing bin 5 for maintenance through the translation assembly 4, and the rest polishing mechanisms 2 can work normally at the moment, so that the interference and delay to the normal polishing operation of the fin tube can be avoided.

The implementation principle of the fin tube polishing device of the embodiment is as follows: through holes 51 for the fin tube to pass through are respectively arranged at the two ends of the polishing bin 5, the fin tube to be polished passes into the polishing bin 5 from the through holes 51 at one end of the polishing bin 5, the fin tube can be supported through the second limiting piece 38, and meanwhile, the first limiting piece 36 is driven to move downwards through the first driving piece 31, so that the first limiting piece 36 is abutted with the outer side wall of the fin tube, and the fin tube is limited. The swing arm 203 is driven to rotate by the swing cylinder 204, the angle of the polishing belt 209 is adjusted, the polishing belt 209 is contacted with the side wall of the fin tube, and the polishing motor 202 drives the polishing belt 209 to operate so as to polish the fin tube. If one of the polishing mechanisms 2 fails, the second bin gate 7 is opened, and the failed polishing mechanism 2 can be moved out of the polishing bin 5 for maintenance through the translation assembly 4, so that the rest polishing mechanisms 2 can work normally.

The embodiments of this embodiment are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, in which like parts are denoted by like reference numerals. Therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The polishing mechanism (2) is arranged on the frame (1), the polishing mechanism (2) is used for polishing the peripheral wall of a fin tube, and the polishing mechanism is characterized by further comprising a limiting mechanism (3), the limiting mechanism (3) comprises a first driving piece (31), a support (32), a sliding rod (33), a spring (34), a first connecting seat (35), a first limiting piece (36), a second connecting seat (37) and a second limiting piece (38), the first driving piece (31) is fixedly arranged on the frame (1), the first driving piece (31) is connected with the support (32), the first driving piece (31) is used for driving the support (32) to lift, the sliding rod (33) is slidably arranged on the support (32), the first connecting seat (35) is fixedly connected with the sliding rod (33), the spring (34) is sleeved on the outer side of the first connecting seat (33), two ends of the spring (34) respectively act on the first connecting seat (35) and the first connecting seat (36) are rotatably arranged on the first connecting seat (36) and the first connecting seat (36), the second connecting seat (37) is fixedly arranged on the frame (1), the second limiting part (38) is rotationally arranged on the second connecting seat (37), and the second limiting part (38) is used for supporting the fin tube.

2. The fin tube polishing apparatus as claimed in claim 1, wherein the first stopper (36) is a sphere, the first connecting seat (35) is provided with a first groove with a shape matching with the first stopper (36), the first stopper (36) is rotationally clamped in the first groove, the second stopper (38) is a sphere, the second connecting seat (37) is provided with a second groove with a shape matching with the second stopper (38), and the second stopper (38) is rotationally clamped in the second groove.

3. The fin tube polishing device according to claim 1, further comprising a polishing bin (5), a first bin gate (6), a second bin gate (7) and a plurality of groups of translation assemblies (4), wherein the polishing bin (5) is fixedly arranged on the frame (1), the first bin gate (6) and the second bin gate (7) can be opened and closed on the polishing bin (5), the polishing mechanism (2) is positioned in the polishing bin (5), the polishing mechanism (2) is provided with a plurality of groups, the translation assemblies (4) are arranged on the frame (1) and are respectively in one-to-one correspondence with the polishing mechanisms (2), the translation assemblies (4) are respectively connected with the polishing mechanisms (2), and when the second bin gate (7) is opened, the translation assemblies (4) can drive the polishing mechanisms (2) to move relative to the polishing bin (5).

4. A fin tube polishing apparatus as claimed in claim 3, wherein the first bin gate (6) is provided with a plurality of first bin gates (6), the positions of the plurality of first bin gates (6) are respectively in one-to-one correspondence with the polishing mechanisms (2), the first bin gate (6) is provided with a viewing window (61), and a transparent plate (62) is fixedly arranged at the viewing window (61) of the first bin gate (6).

5. A fin tube polishing device according to claim 3, wherein the polishing mechanism (2) comprises a sliding seat (201), a polishing motor (202), a swinging arm (203), a swinging cylinder (204), a connecting rod (205), a first rotary roller (206), a second rotary roller (207), a third rotary roller (208) and a polishing belt (209), the sliding seat (201) is slidably arranged on the frame (1), the translation assembly (4) is connected with the sliding seat (201), the swinging arm (203) is hinged with the sliding seat (201), the swinging cylinder (204) is fixedly arranged on the sliding seat (201), two ends of the connecting rod (205) are respectively hinged with a first piston rod (2041) of the swinging cylinder (204) and the swinging arm (203), the first rotary roller (206), the second rotary roller (207) and the third rotary roller (208) are rotatably arranged on the swinging arm (203), the polishing motor (202) is fixedly arranged on the sliding seat (201), and is connected with the first rotary roller (206), and the second rotary roller (208) is rotatably arranged on the outer side of the first rotary roller (208).

6. The fin tube polishing apparatus as claimed in claim 5, wherein the translation assembly (4) includes a moving motor (41), a screw and a housing (42), the housing (42) is fixedly disposed on the frame (1), the screw is rotatably disposed in the housing (42), the moving motor (41) is fixedly disposed on the housing (42) and is connected with the screw, the moving motor (41) is used for driving the screw to rotate, the slide (201) is slidably disposed on the housing (42), the slide (201) is provided with a screw hole, and the slide (201) is in screwed connection with the screw through the screw hole.

7. The fin tube polishing apparatus as claimed in claim 5, wherein the polishing mechanism (2) further comprises a tensioning cylinder (210) and an adjusting seat (211), the adjusting seat (211) is slidably disposed on the swing arm (203), the second rotating roller (207) is rotatably disposed on the adjusting seat (211), the tensioning cylinder (210) is fixedly disposed on the swing arm (203) and connected to the adjusting seat (211), and the tensioning cylinder (210) is used for driving the adjusting seat (211) to slide along the swing arm (203).

8. A fin tube polishing apparatus according to claim 3, wherein said spacing means (3) is provided in a plurality of groups, each group of said spacing means (3) being located between adjacent ones of said polishing means (2).