Surface treatment device for heat exchange internal thread copper pipe
By designing an automated surface treatment device, the clamping and polishing problems of multi-special copper tubes are solved, and efficient and automated surface treatment of copper tubes is achieved, improving the processing quality and efficiency.
Patent Information
- Application Number
- CN202510877053.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2025-08-15
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing heat exchange internal thread copper pipe surface treatment equipment cannot adaptively clamp multi-spec copper pipes, and the polishing is uneven and relies on manual cleaning, resulting in low efficiency and high labor intensity.
A surface treatment device including an adjustment mechanism, a propulsion assembly, a centering mechanism and a polishing and cleaning mechanism is designed, and the automatic clamping and rotation of a multi-special copper tube is achieved by using motor-driven gear meshing, combining the automatic processing of a polishing belt and a cleaning brush.
The automation, uniform polishing and cleaning of multi-spec copper tubes is realized, which improves the processing efficiency and quality, and avoids manual intervention and secondary pollution.
Smart Images

Figure CN120480751A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of metal material surface treatment, in particular to a surface treatment device for a heat exchange internally threaded copper tube. Background Art
[0002] Internally threaded copper heat exchange tubes are highly efficient heat exchange components commonly used in cooling, heating, and hot water systems. The internal threading of these copper tubes increases the contact area between the fluid and the tube wall, thereby improving heat exchange efficiency. Copper's excellent thermal conductivity and corrosion resistance ensure stable and durable heat exchange. The internal thread design also helps break down the fluid boundary layer, further optimizing heat transfer. Therefore, these heat exchange tubes are widely used in applications requiring efficient heat exchange.
[0003] Currently, in the surface treatment of internally threaded copper tubes for heat exchange, although equipment has been used to replace manual polishing to improve efficiency, a fixed roller conveying method is generally used, which is only applicable to copper tubes of the same diameter. The lack of a rotating mechanism leads to uneven polishing, and surface impurities still rely on manual cleaning, resulting in low efficiency and high labor intensity. Summary of the Invention
[0004] One purpose of the present invention is to propose a surface treatment device for heat exchange internal threaded copper tubes. The present invention solves the problems raised in the above background in the current surface treatment of heat exchange internal threaded copper tubes. Although there are equipment to replace manual polishing to improve efficiency, a fixed roller conveying method is generally adopted, which is only applicable to copper tubes of the same diameter. The lack of a rotating mechanism leads to uneven polishing, and manual cleaning of surface impurities is still relied upon, resulting in low efficiency and high labor intensity.
[0005] A surface treatment device for a heat exchange internally threaded copper tube according to an embodiment of the present invention includes:
[0006] processing table;
[0007] The adjustment mechanism includes a propulsion disk arranged on the top of the processing table, a support disk is rotatably provided inside the said processing table, a guide groove is provided on one side of the said support disk in a circular shape, a gear disk is provided on one side of the said support disk through a rotating shaft, an arc groove is provided on the inside of the said gear disk in a circular shape, a guide shaft is movably provided inside the said guide groove and the arc groove, one end of the said guide shaft is located inside the guide groove and an L-shaped support arm is movably provided, one end of the said L-shaped support arm is fixedly provided with an arc-shaped positioning plate for clamping the internal threaded copper tube, the arc-shaped gear disk realizes the adaptive clamping of the arc-shaped positioning plate to a variety of internal threaded copper tubes by the first driving component, and the said support disk realizes the rotation of the internal threaded copper tube during the surface treatment process by the second driving component;
[0008] The propulsion assembly is installed at the bottom of the propulsion disk in the adjustment mechanism, and is used to control the internal thread copper tube to move forward and backward during the processing;
[0009] A centering mechanism is installed on the top of the processing table to maintain the relative position of the surface treatment of the internal threaded copper tube, wherein the centering mechanism includes a fixed table fixed to the top of the processing table, a swivel is rotatably provided on one side of the fixed table, and a first centering seat and a second centering seat are fixedly provided on one side of the fixed seat and the swivel in a circular shape, respectively. The first centering seat and the second centering seat are each provided with four groups, and the centering rod fixed inside the second centering seat is movably provided inside the first centering seat, and the four groups of centering rods and the first drive assembly are synchronized by a linkage assembly;
[0010] The polishing and cleaning mechanism is installed inside the fixed platform of the centering mechanism and is used to polish and clean the outside of the internally threaded copper tube.
[0011] Preferably, the first driving assembly includes a first gear meshing with the gear wheel, and the first gear is fixedly arranged at the output end of the first motor.
[0012] Preferably, the second drive assembly includes a first gear ring fixed to the outside of the support plate, a second gear is provided on the outside of the first gear ring for meshing transmission, and the second gear is fixed to the output end of the second motor.
[0013] Preferably, the first motor is fixedly arranged on the other side of the supporting disk, and the second motor is fixedly arranged on the other side of the propulsion disk.
[0014] Preferably, the propulsion assembly includes a movable seat fixedly arranged at the bottom of the propulsion disk and screws rotatably arranged on both sides of the top of the processing table. A transmission assembly is arranged between the two screws, and the screws are fixedly arranged at the output end of the third motor.
[0015] Preferably, the transmission assembly consists of a pulley and a belt.
[0016] Preferably, the linkage assembly includes a semi-arc tooth groove opened inside the rotating ring, and a fourth gear meshing with the outside of the first gear in the first drive assembly. One side of the fourth gear is fixedly provided with a gear cylinder passing through the inside of the rotating ring, and one end of the gear cylinder is movably provided with a spline, and the end of the spline is fixedly provided with a third gear meshing with the semi-arc tooth groove.
[0017] Preferably, the polishing and cleaning mechanism includes a second gear ring that rotates inside the fixed seat, and belt fixing seats are symmetrically fixed at both ends of the second gear ring. A polishing belt is transmitted between the two belt fixing seats, and the second gear ring is rotated by a third driving component. A cleaning brush and a vacuum cleaner are fixed at the inlet pipe inside the fixed seat, and a collection box is movably provided at the position corresponding to the vacuum cleaner at the bottom of the fixed seat.
[0018] Preferably, the outer side of the second gear ring is circular and is provided with a positioning wheel, and the positioning wheel is rotatably arranged inside the fixing seat.
[0019] Preferably, the third driving assembly includes a fifth gear meshed with the outer side of the second gear ring, the fifth gear is fixedly arranged at the output end of the fourth motor, and the fourth motor is fixedly arranged inside the fixing seat.
[0020] The beneficial effects of the present invention are:
[0021] The present invention effectively avoids the problems of traditional equipment being unable to adaptively clamp copper tubes of multiple specifications and uneven polishing by providing an adjustment mechanism. When installing the internally threaded copper tube, the first motor in the first drive assembly is used to drive the first gear to engage with the toothed disc, so that the toothed disc drives the guide shaft to slide along the arc groove, thereby promoting the L-shaped support arm to link the arc positioning plate to radially contract or expand, thereby realizing automatic clamping of internally threaded copper tubes of different diameters. Then, the second motor in the second drive assembly is used to drive the second gear to engage with the first gear ring, driving the support disc and the clamped copper tube to rotate at a uniform speed, so that the polishing mechanism performs a circumferential full coverage treatment on the surface of the copper tube, thereby greatly improving the quality and efficiency of the surface treatment.
[0022] The present invention effectively avoids the problem that the traditional fixed roller is only suitable for a single pipe diameter and has low manual adjustment efficiency by providing a propulsion assembly. When in use, the third motor drives the screw to rotate, and the transmission assembly synchronously drives the screws on both sides to rotate, so that the movable seat moves along the axial direction of the screw, thereby pushing the propulsion disk and the clamped copper pipe forward or backward at a uniform speed, ensuring the stability and consistency of the internal threaded copper pipe during the surface treatment process, and improving the treatment efficiency.
[0023] The present invention effectively avoids the problem of processing offset caused by poor centering during the surface treatment of copper tubes by providing a centering mechanism. During use, the first gear meshes with the gear cylinder through the fourth gear, driving the third gear at the spline end to mesh with the semi-arc tooth groove of the rotating ring. Therefore, under the drive of the first motor in the first drive assembly, the rotating ring rotates, causing the four groups of second centering seats to move synchronously radially along the first centering seat, driving the centering rod to form a four-point centering constraint, thereby ensuring the accuracy and consistency of the surface treatment of the internally threaded copper tube;
[0024] The present invention effectively avoids the problem of traditional equipment relying on manual cleaning and polishing residual impurities by setting up a polishing and cleaning mechanism. When in use, the fourth motor drives the fifth gear to engage with the second gear ring, thereby driving the fixed belt seat and the polishing belt to rotate at high speed around the surface of the copper tube to achieve multi-angle polishing. At the same time, when the copper tube enters the fixed seat, the cleaning brush removes the surface dust in advance, and the debris generated by polishing is sucked into the collection box by the vacuum cleaner for centralized treatment, avoiding secondary pollution, achieving efficient and automatic cleaning of the surface treatment of the internal threaded copper tube, and improving the overall processing efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of one side of a surface treatment device for a heat exchange internally threaded copper tube proposed by the present invention;
[0027] Figure 2 This is a schematic diagram of the three-dimensional structure of the other side of the surface treatment device for a heat exchange internally threaded copper tube proposed by the present invention;
[0028] Figure 3 This is a schematic diagram of the polishing belt structure of a surface treatment device for a heat exchange internally threaded copper tube proposed by the present invention;
[0029] Figure 4 This is a schematic diagram of the semi-arc tooth groove structure of a surface treatment device for a heat exchange internally threaded copper tube proposed by the present invention;
[0030] Figure 5 This is a schematic structural diagram of an arc-shaped positioning plate of a surface treatment device for a heat exchange internally threaded copper tube proposed by the present invention;
[0031] Figure 6 This is a schematic diagram of the outer gear ring structure of a surface treatment device for a heat exchange internally threaded copper tube proposed by the present invention;
[0032] Figure 7 This is a schematic diagram of the positioning rod structure of a surface treatment device for a heat exchange internally threaded copper tube proposed by the present invention;
[0033] In the figure: 1. Processing table; 2. Adjustment mechanism; 201. Propelling plate; 202. Support plate; 203. Guide groove; 204. Toothed plate; 205. Rotating shaft; 206. Arc groove; 207. Guide shaft; 208. L-shaped support arm; 209. Arc positioning plate; 210. First gear; 211. First motor; 212. First gear ring; 213. Second gear; 214. Second motor; 3. Propelling assembly; 301. Screw; 302. Moving base; 303. Third motor; 304. Transmission assembly; 4. Centering mechanism; 401. Fixed seat; 402. Rotating ring; 403. First centering seat; 404. Second centering seat; 405. Centering rod; 406. Semi-arc tooth groove; 407. Third gear; 408. Gear cylinder; 409. Spline; 410. Fourth gear; 5. Polishing and cleaning mechanism; 501. Second gear ring; 502. Positioning wheel; 503. Belt fixing seat; 504. Polishing belt; 505. Fifth gear; 506. Fourth motor; 507. Cleaning brush; 508. Vacuum cleaner; 509. Collection box. DETAILED DESCRIPTION
[0034] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.
[0035] refer to Figure 1-7 , a surface treatment device for a heat exchange internally threaded copper tube, comprising:
[0036] Processing table 1;
[0037] The adjustment mechanism 2 includes a propulsion disk 201 arranged on the top of the processing table 1, with a support disk 202 rotatably arranged inside. One side of the support disk 202 is circular and has a guide groove 203. A toothed disk 204 is rotatably arranged on one side of the support disk 202 through a rotating shaft 205. The toothed disk 204 has a circular interior and an arc groove 206. The guide shafts 207 are movably arranged inside the corresponding guide grooves 203 and the arc grooves 206. One end of 207 is located in the guide groove 203 and an L-shaped support arm 208 is movably provided. One end of the L-shaped support arm 208 is fixedly provided with an arc-shaped positioning plate 209 for clamping the internal threaded copper tube. The arc-shaped toothed disk 204 realizes the arc-shaped positioning plate 209 adaptively clamping a variety of internal threaded copper tubes through a first drive component. The first drive component includes a first gear 210 meshing with the toothed disk 204. The first gear 21 0 is fixedly arranged at the output end of the first motor 211, and the support disk 202 realizes the rotation of the internal threaded copper tube during the surface treatment process through the second driving assembly. The second driving assembly includes a first gear ring 212 fixed to the outer side of the support disk 202, and a second gear 213 is provided on the outer side of the first gear ring 212 for meshing transmission. The second gear 213 is fixedly arranged at the output end of the second motor 214. The first motor in the first driving assembly drives the first gear to mesh with the gear disk, so that the gear disk drives the guide shaft to slide along the arc groove, thereby promoting the L-shaped support arm to link the arc positioning plate to radially contract or expand, thereby realizing automatic clamping of internal threaded copper tubes of different diameters, and then the second motor in the second driving assembly drives the second gear to mesh with the first gear ring, driving the support disk and the clamped copper tube to rotate at a uniform speed, so that the polishing mechanism performs circumferential full coverage treatment on the surface of the copper tube;
[0038] The propulsion assembly 3 is installed at the bottom of the propulsion disk 201 in the adjustment mechanism 2, and is used to control the internal threaded copper tube to move forward and backward during the processing. The propulsion assembly 3 includes a movable seat 302 fixedly arranged at the bottom of the propulsion disk 201, and screws 301 rotatably arranged on both sides of the top of the processing table 1. A transmission assembly 304 is provided between the two screws 301. The screw 301 is fixedly arranged at the output end of the third motor 303. The third motor drives the screw to rotate, and synchronously drives the screws on both sides to rotate through the transmission assembly, so that the movable seat moves along the axial direction of the screw, thereby pushing the propulsion disk and the clamped copper tube forward or backward at a uniform speed;
[0039] The centering mechanism 4 is installed on the top of the processing table 1 and is used to maintain the relative position of the surface treatment of the internal threaded copper tube, wherein the centering mechanism 4 includes a fixed table fixed on the top of the processing table 1, a swivel 402 is rotatably provided on one side of the fixed table, and a first centering seat 403 and a second centering seat 404 are fixedly provided on one side of the fixed seat 401 and the swivel 402 in a circular shape, respectively. The first centering seat 403 and the second centering seat 404 are each provided with four groups, and the centering rod 405 fixed inside the second centering seat 404 is located in the internal movable setting of the first centering seat 403. The four groups of centering rods 405 and the first drive assembly are synchronized through a linkage assembly, and the linkage assembly includes a semi-arc tooth groove 40 opened inside the swivel 402. 6. The fourth gear 410 is meshed with the outer side of the first gear 210 in the first driving assembly. A gear cylinder 408 that passes through the interior of the rotating ring 402 is fixedly provided on one side of the fourth gear 410. A spline 409 is movably provided on one end of the gear cylinder 408. The end of the spline 409 is fixedly provided with a third gear 407 that meshes with the semi-arc tooth groove 406 for transmission. The first gear meshes with the gear cylinder through the fourth gear, driving the third gear at the end of the spline to mesh with the semi-arc tooth groove of the rotating ring. Therefore, under the drive of the first motor in the first driving assembly, the rotating ring rotates, causing the four groups of second centering seats to move synchronously radially along the first centering seat, driving the centering rod to form a four-point centering constraint to ensure the accuracy and consistency of the surface treatment of the internal threaded copper tube;
[0040] The polishing and cleaning mechanism 5 is installed inside the fixed platform of the centering mechanism 4 and is used to polish and clean the outside of the internal threaded copper tube. The polishing and cleaning mechanism 5 includes a second gear ring 501 that rotates inside the fixed seat 401. The two ends of the second gear ring 501 are cross-symmetrically fixed with fixed belt seats 503. A polishing belt 504 is transmitted between the two fixed belt seats 503. The second gear ring 501 is rotated by a third driving component. The third driving component includes a fifth gear 505 that is meshed with the outer side of the second gear ring 501. The fifth gear 505 is fixed to the input of the fourth motor 506. At the output end, the fourth motor 506 is fixedly arranged inside the fixed seat 401, and a cleaning brush 507 and a vacuum cleaner 508 are fixedly arranged at the inlet pipe inside the fixed seat 401. A collection box 509 is movably arranged at the bottom of the fixed seat 401 corresponding to the position of the vacuum cleaner 508. The fourth motor drives the fifth gear to engage with the second gear ring, thereby driving the fixed belt seat and the polishing belt to rotate at high speed around the surface of the copper tube to achieve multi-angle polishing. At the same time, when the copper tube enters the fixed seat, the cleaning brush removes the surface dust in advance, and the debris generated by polishing is sucked into the collection box by the vacuum cleaner for centralized treatment to avoid secondary pollution.
[0041] Embodiment 1: The first motor 211 is fixedly disposed on the other side of the supporting plate 202 , and the second motor 214 is fixedly disposed on the other side of the propulsion plate 201 to ensure the stability of the first motor and the second motor during driving.
[0042] Embodiment 2: The transmission assembly 304 is composed of a pulley and a belt, and the pulley and the belt are provided to realize synchronous rotation of the two screws, so as to improve the stability of the propulsion disk during movement.
[0043] Example 3: The outer side of the second gear ring 501 is circular and is provided with a positioning wheel 502. The positioning wheel 502 is rotatably set inside the fixed seat 401. The second gear ring is limited in rotation by using multiple positioning wheels, which enables the polishing belt to stably clean the surface of the copper tube.
[0044] Working principle: First, the first motor 211 in the adjustment mechanism 2 drives the first gear 210 to rotate, meshing with the toothed disc 204, driving the guide shaft 207 to slide along the arc groove 206, so that the L-shaped support arm 208 links the arc positioning plate 209 to radially contract or expand, adaptively clamping internal threaded copper tubes of different diameters, then, the second motor 214 drives the second gear 213 to mesh with the first gear ring 212, driving the support disc 202 and the clamped copper tube to rotate at a uniform speed, providing a basis for circumferential full coverage processing for the polishing mechanism, in the propulsion assembly 3, the third motor 303 drives the screw 301 to rotate, and the transmission assembly 304 composed of a pulley and a belt synchronously drives the screws on both sides to rotate, so that the movable seat 302 moves along the axial direction of the screw, realizing the forward and backward control of the copper tube, and the centering mechanism 4 is The first motor 211 drives the first gear 210, which is driven by the fourth gear 410, the gear cylinder 408, the spline 409 and the third gear 407 to rotate the rotating ring 402, driving the four sets of centering rods 405 to form a four-point centering constraint to ensure the relative position of the copper tube during the processing is stable. In the polishing and cleaning mechanism 5, the fourth motor 506 drives the fifth gear 505 to engage with the second gear ring 501, driving the fixed belt seat 503 and the polishing belt 504 to rotate at high speed, and performing multi-angle polishing on the surface of the copper tube. At the same time, the cleaning brush 507 removes the surface dust in advance, and the vacuum cleaner 508 sucks the debris generated by polishing into the collection box 509 to achieve automatic cleaning and avoid secondary pollution. The entire device has a compact structure and is easy to operate, which effectively improves the quality and efficiency of the surface treatment of the heat exchange internal threaded copper tube.
[0045] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.
Claims
1. A surface treatment device for a heat exchange internally threaded copper tube, characterized in that: include: Processing table (1); The adjustment mechanism (2) comprises a propulsion disc (201) arranged on the top of the processing table (1), wherein a support disc (202) is rotatably arranged inside the support disc (202), and a guide groove (203) is provided on one side of the support disc (202), and a toothed disc (204) is rotatably arranged on one side of the support disc (202) through a rotating shaft (205), and the toothed disc (204) is circular and has an arc groove (206) provided inside, and guide grooves (203) and arc grooves (206) are movably provided inside. Toward the shaft (207), one end of the (207) is located inside the guide groove (203) and is movably provided with an L-shaped support arm (208), one end of the L-shaped support arm (208) is fixedly provided with an arc-shaped positioning plate (209) for clamping the internal threaded copper tube, the arc-shaped toothed disc (204) realizes the arc-shaped positioning plate (209) to adaptively clamp a variety of internal threaded copper tubes through the first driving component, and the support disc (202) realizes the rotation of the internal threaded copper tube during the surface treatment process through the second driving component; A propulsion assembly (3) is installed at the bottom of the propulsion disc (201) in the adjustment mechanism (2) and is used to control the internally threaded copper tube to move forward and backward during the processing; A centering mechanism (4) is installed on the top of the processing table (1) and is used to maintain the relative position of the surface treatment of the internal thread copper tube, wherein the centering mechanism (4) includes a fixed table fixed on the top of the processing table (1), a rotating ring (402) is rotatably provided on one side of the fixed table, and a first centering seat (403) and a second centering seat (404) are respectively fixedly provided on one side of the fixed seat (401) and the rotating ring (402) in a circular shape, wherein the first centering seat (403) and the second centering seat (404) are each provided with four groups, and a centering rod (405) fixed inside the second centering seat (404) is located in a movable arrangement inside the first centering seat (403), and synchronization is achieved between the four groups of centering rods (405) and the first driving assembly through a linkage assembly; The polishing and cleaning mechanism (5) is installed inside the fixed platform of the centering mechanism (4) and is used to polish and clean the outside of the internally threaded copper tube.
2. The surface treatment device for a heat exchange internally threaded copper tube according to claim 1, characterized in that: The first driving assembly comprises a first gear (210) meshed with the toothed disc (204), and the first gear (210) is fixedly arranged at the output end of the first motor (211).
3. The surface treatment device for a heat exchange internally threaded copper tube according to claim 1, characterized in that: The second drive assembly comprises a first gear ring (212) fixed to the outside of the support plate (202); a second gear (213) is provided on the outside of the first gear ring (212) for meshing transmission; and the second gear (213) is fixed to the output end of the second motor (214).
4. A surface treatment device for a heat exchange internally threaded copper tube according to claim 2 or 3, characterized in that: The first motor (211) is fixedly arranged on the other side of the support disk (202), and the second motor (214) is fixedly arranged on the other side of the propulsion disk (201).
5. The surface treatment device for a heat exchange internally threaded copper tube according to claim 1, characterized in that: The propulsion assembly (3) comprises a movable seat (302) fixedly arranged at the bottom of the propulsion disc (201), and screws (301) rotatably arranged on both sides of the top of the processing table (1), a transmission assembly (304) is arranged between the two screws (301), and the screws (301) are fixedly arranged at the output end of the third motor (303).
6. The surface treatment device for a heat exchange internally threaded copper tube according to claim 5, characterized in that: The transmission assembly (304) consists of a pulley and a belt.
7. The surface treatment device for a heat exchange internally threaded copper tube according to claim 1, characterized in that: The linkage assembly comprises a semi-arc tooth groove (406) provided inside a rotating ring (402), and a fourth gear (410) meshingly transmitted with the outside of a first gear (210) in a first driving assembly; a gear cylinder (408) penetrating the interior of the rotating ring (402) is fixedly provided on one side of the fourth gear (410); a spline (409) is movably provided on one end of the gear cylinder (408); and a third gear (407) meshingly transmitted with the semi-arc tooth groove (406) is fixedly provided on the end of the spline (409).
8. The surface treatment device for a heat exchange internally threaded copper tube according to claim 1, characterized in that: The polishing and cleaning mechanism (5) comprises a second toothed ring (501) that rotates inside a fixed seat (401), a belt fixing seat (503) being fixedly arranged at both ends of the second toothed ring (501) in a cross-symmetrical manner, a polishing belt (504) being arranged for transmission between the two belt fixing seats (503), the second toothed ring (501) being rotated by a third driving assembly, a cleaning brush (507) and a dust collector (508) being fixedly arranged at the inlet pipe inside the fixed seat (401), and a collection box (509) being movably arranged at the bottom of the fixed seat (401) corresponding to the position of the dust collector (508).
9. The surface treatment device for a heat exchange internally threaded copper tube according to claim 8, characterized in that: The outer side of the second gear ring (501) is circular and is provided with a positioning wheel (502), and the positioning wheel (502) is rotatably arranged inside the fixing seat (401).
10. The surface treatment device for a heat exchange internally threaded copper tube according to claim 8, characterized in that: The third driving assembly includes a fifth gear (505) meshed with the outside of the second gear ring (501), the fifth gear (505) is fixedly arranged at the output end of the fourth motor (506), and the fourth motor (506) is fixedly arranged inside the fixing seat (401).