A high-efficiency heat exchange tube based on knurled fin copper tube and its production process

Abstract

The present invention relates to the technical field of heat exchange equipment, and discloses a high-efficiency heat exchange tube based on a knurled fin copper tube and a production process thereof, wherein the high-efficiency heat exchange tube based on the knurled fin copper tube comprises: a copper tube, wherein the outer circumferential surface of the copper tube is provided with knurling, and the outer circumferential surface of the copper tube is wound with annular fins, and the knurling is provided on the copper tube, and then the winding machine assembly spirally winds the annular fins on the copper tube, and during the winding, only the head and tail parts of the annular fins in contact with the copper tube are welded and fixed first, and in this process, the limiting components spirally distributed on the six circumferentially arranged support rods act to stabilize the parts of the annular fins that are wound on the copper tube but not welded and fixed, so that they do not move, and then the outer diameter of the copper tube is expanded by using a water swelling process, so that the knurling on the copper tube is in close contact with the annular fins, and then the copper tube and the annular fins are all welded during the process of spiral cutting of the copper tube, thereby greatly increasing the heat exchange area of ​​the copper tube.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and in particular to a high-efficiency heat exchange tube based on a knurled fin copper tube and a production process thereof. Background Art

[0002] Traditional heat exchange tube designs often have problems such as low heat exchange efficiency and large space occupation. Finned copper tubes significantly increase the heat exchange area by adding fins to the surface of the copper tube, thereby improving the heat exchange efficiency. The presence of fins allows heat to be transferred to the fluid more quickly, achieving efficient and energy-saving heat exchange effects.

[0003] In the traditional fin copper tube production process, a winding machine is generally used to wind the fins and weld them to the copper tube surface. However, the initial contact between the fins and the copper tube is not tight enough, especially in the winding stage. The natural gap between the fins and the copper tube surface is difficult to completely eliminate. This phenomenon actually constitutes a significant obstacle to the transfer of heat energy. In the subsequent welding process, although the high temperature can melt the metal to fill part of the gap, this is only a formal filling rather than a seamless connection in essence. The existence of the gap means that heat encounters additional resistance when transferring from the copper tube to the fin, reducing the smoothness and efficiency of heat conduction, and thus weakening the performance of the entire heat exchange system. Based on this, the present invention purposely provides a high-efficiency heat exchange tube based on knurled fin copper tube and a production process thereof that can ensure a tight and gapless connection between the fins and the copper tube. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies of the prior art and provide a high-efficiency heat exchange tube based on a knurled fin copper tube and a production process thereof, so as to solve the technical problems in the prior art.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A production process for a high-efficiency heat exchange tube based on a knurled fin copper tube, characterized in that the high-efficiency heat exchange tube based on the knurled fin copper tube comprises:

[0007] The copper tube has knurling on its outer circumference and is wrapped with annular fins;

[0008] The process comprises the following steps:

[0009] Step S1: First, a knurling device is used to process knurling on the surface of a soft copper tube. Then, the output source drives the winding machine assembly, so that the winding machine assembly and the grooved support table move to the processing point of the copper tube. The first driving source drives the screw to rotate and drives the movable plate to move to the processing point of the copper tube.

[0010] Step S2: inserting the ring-shaped fin into the winding machine assembly, and sliding the copper tube along the groove on the grooved support table so that the head end thereof passes through the winding machine assembly;

[0011] Step S3: inserting the sealing expansion assembly on the movable plate into the copper tube head and expanding it. At this time, the sealing expansion assembly seals the copper tube head and secures the copper tube by tightening.

[0012] Step S4: Start the winding machine assembly to convey the ring-shaped fin to the surface of the copper tube, and weld the ring-shaped fin to the contact part of the copper tube head end through the welding assembly. At the same time, all electromagnets are energized to attract the metal frame into the limit block. At this time, the metal frame compresses the spring;

[0013] Step S5: Subsequently, the first driving source and the second driving source are simultaneously started. The first driving source drives the screw to rotate and drives the movable plate to move, so that the sealing expansion assembly can drive the copper tube to translate through the winding machine assembly. At the same time, the second driving source drives the sealing expansion assembly to rotate, thereby driving the copper tube to rotate. At this time, the copper tube rotates and translates through the winding machine assembly, and the ring-shaped fin is spirally wound around the copper tube;

[0014] Step S6: When the copper tube wrapped with the ring-shaped fins moves in a spiral translation, the ring-shaped fins will abut against the surface of the collar on the support rod and drive the collar to rotate, and the ring-shaped fins will spiral into the space between the two limit blocks. At this time, the electromagnet is de-energized, and the spring force pushes the metal frame toward the ring-shaped fins between the two limit blocks, and finally the abutment wheel abuts against the ring-shaped fins.

[0015] Step S7: When all the copper tubes have finally passed through the winding machine assembly, the welding assembly welds and fixes the contact portion between the annular fin and the rear end of the copper tube.

[0016] Preferably, the step S7 is followed by the following steps:

[0017] Step S8: The connecting plate is driven to move by the output source, and the connecting plate drives the winding machine assembly and the grooved support table away from the point where the copper tube is processed;

[0018] Step S9: The tail end of the copper tube is then sealed by a water expansion machine assembly, and the copper tube is subjected to a water expansion process so that the outer diameter of the copper tube is slightly expanded;

[0019] Step S10: The copper tube wrapped with the ring-shaped fins is then spirally conveyed in the reverse direction. During this process, the welding assembly welds all the ring-shaped fins onto the ring-shaped fins.

[0020] Step S11: When the copper tube is cut, it passes through the hollow round wheel, and the ring-shaped fins abut against the roller.

[0021] Preferably, the production process of the high-efficiency heat exchange tube based on the knurled fin copper tube is applied to a production equipment of the high-efficiency heat exchange tube based on the knurled fin copper tube, and the production equipment comprises:

[0022] A processing platform is provided with a film winding machine assembly slidably mounted thereon, and a water expansion machine assembly is provided thereon. The film winding machine assembly is driven to move by an output source, a through hole is provided on the film winding machine assembly, and the film winding machine assembly winds the ring-shaped fins onto the copper tube. A welding assembly is fixedly mounted on the processing platform, and the welding assembly is used to weld and fix the ring-shaped fins to the copper tube. A movable plate is slidably mounted on the processing platform, and a sealing expansion assembly is rotatably mounted on the movable plate and is driven to move by a driving assembly. The sealing expansion assembly cooperates with the copper tube and is driven to rotate by a second driving source.

[0023] The bracket is fixedly installed on the processing platform and has six circumferentially arranged support rods fixedly installed on it. Each support rod is provided with multiple equally spaced linearly arranged limit components, and all limit components are distributed in a spiral shape.

[0024] Preferably, the limit assembly includes two symmetrically arranged limit blocks, with a gap between the two limit blocks. The limit block is fixedly installed on the support rod, and a metal frame is slidably installed inside it. An abutment wheel is rotatably installed in the metal frame, and is connected to the limit block through a spring. An electromagnet is provided on the limit block. When the electromagnet is energized, it sucks the metal frame into the limit block, and the metal frame compresses the spring. At this time, the gap between the two limit blocks allows the copper tube wrapped around the ring-shaped fin to spirally translate into it; when the electromagnet is de-energized, the spring force pushes the metal frame so that the abutment wheel abuts against the ring-shaped fin.

[0025] Preferably, there are multiple metal frames, and the multiple metal frames are arranged in a fan shape.

[0026] Preferably, the limiting assembly further comprises a collar, which is located in the gap and rotatably mounted on the support rod. When the copper tube wrapped with the annular fins translates spirally, the annular fins abut against the collar and drive the collar to rotate.

[0027] Preferably, the driving assembly includes a fixed frame and a screw, the fixed frame is fixedly mounted on the processing platform, the screw is rotatably mounted on the fixed frame, and is driven to rotate by a first driving source, the movable plate is slidingly connected to the fixed frame, and is threadably connected to the screw.

[0028] Preferably, a hollow circular wheel is fixedly installed on the processing platform, and a plurality of circumferentially arranged rollers are rotatably installed inside the hollow circular wheel. When the copper tube wrapped with annular fins spirally passes through the hollow circular wheel, the annular fins abut against the rollers and drive the rollers to rotate.

[0029] Preferably, a slotted support platform is slidably provided on the processing platform, the axis of the slot of the slotted support platform coincides with the axis of the film winding machine assembly, and the slotted support platform is fixedly connected to the film winding machine assembly through a connecting plate.

[0030] Beneficial effects of the present invention:

[0031] 1. In the present invention, knurling is provided on the copper tube, and then the winding machine assembly spirally winds the annular fins on the copper tube. During the winding process, only the head and tail parts of the annular fins in contact with the copper tube are first welded and fixed. During this process, the spirally distributed limiting components on the six circumferentially arranged support rods stabilize the parts of the annular fins that are wound on the copper tube but not welded and fixed, so that they do not move. Then, the outer diameter of the copper tube is expanded by using a water swelling process, so that the knurling on the copper tube is in close contact with the annular fins. Subsequently, the copper tube and the annular fins are all welded during the spiral cutting process of the copper tube. In this way, the heat exchange area of ​​the copper tube is greatly increased, and a small amount of copper tubes and annular fins can replace the heat exchange capacity that can only be achieved by a large number of copper tubes in the old process.

[0032] 2. In the present invention, the suction force generated by the electromagnet after being energized will cause the metal frame to move into the limit block, making the gap between the two limit blocks the largest. At this time, the ring-shaped fin will enter the gap when it moves spirally. When the electromagnet is de-energized, the spring force will cause the metal frame to move toward the ring-shaped fin, and finally the abutment wheel will abut against the ring-shaped fin. Each protrusion of the ring-shaped fin wrapped around the copper tube will be subjected to the force applied by the two electromagnets, so that the ring-shaped fin can maintain its position on the copper tube without being welded to the copper tube. More importantly, when the copper tube moves spirally, the abutment wheel will roll on the surface of the ring-shaped fin, and the rolling friction has little effect on the movement of the ring-shaped fin.

[0033] 3. In the present invention, the lateral position of the annular fin is limited by two limit blocks. When the copper tube wrapped around the annular fin translates spirally, the annular fin abuts against the collar. The collar can further limit the annular fin in the vertical direction, so that the annular fin will not move away from the copper tube. The rotation of the collar can reduce the friction generated by the abutment between the annular fin and the copper tube, thereby avoiding adverse effects on the movement of the copper tube spiral. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described below with reference to the accompanying drawings.

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 It is a schematic diagram of the structure of the fin winding machine of the present invention winding the fin on the copper tube;

[0037] Figure 3This is a schematic structural diagram of the copper tube in the present invention about to undergo a water swelling process;

[0038] Figure 4 It is a schematic structural diagram of the welding assembly for welding the copper tube and the fin in the present invention;

[0039] Figure 5 It is a schematic structural diagram of the welding assembly in the present invention;

[0040] Figure 6 It is a structural diagram of the limit block in the present invention;

[0041] Figure 7 It is a structural diagram of the collar in the present invention;

[0042] Figure 8 It is a schematic structural diagram of a cross-section of the limit block in the present invention.

[0043] In the figure: 1. Processing platform; 2. Copper tube; 201. Knurling; 3. Annular fin; 4. Bracket; 401. Notch; 5. Support rod; 6. Ring; 7. Limit block; 8. Metal frame; 9. Abutment wheel; 10. Electromagnet; 11. Spring; 12. Moving plate; 13. Sealing expansion assembly; 14. Fixed frame; 15. Screw; 16. Winding machine assembly; 17. Slotted support table; 18. Connecting plate; 19. Hollow round wheel; 20. Roller; 21. Welding assembly. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] See also Figures 1-8 As shown, the present invention is a production process for a high-efficiency heat exchange tube based on a knurled fin copper tube, and the high-efficiency heat exchange tube based on a knurled fin copper tube comprises:

[0046] The copper tube 2 has knurling 201 on its outer circumference and is wrapped with annular fins 3;

[0047] The process includes the following steps:

[0048] Step S1: First, knurling 201 is processed on the surface of the soft copper tube 2 by the knurling equipment assembly, and then the winding machine assembly 16 is driven by the output source, so that the winding machine assembly 16 and the grooved support table 17 are moved to the processing point of the copper tube 2, and the screw 15 is driven by the first driving source to rotate and drive the movable plate 12 to move to the processing point of the copper tube 2;

[0049] Step S2: insert the annular fin 3 into the winding machine assembly 16, and slide the copper tube 2 along the groove on the grooved support platform 17 so that its head end passes through the winding machine assembly 16;

[0050] Step S3: Insert the sealing expansion assembly 13 on the movable plate 12 into the head end of the copper tube 2 and expand it. At this time, the sealing expansion assembly 13 seals the head end of the copper tube 2 and fixes the copper tube 2 by tightening.

[0051] Step S4: Start the winding machine assembly 16 to convey the ring-shaped fin 3 to the surface of the copper tube 2, and weld the ring-shaped fin 3 to the contact part of the head end of the copper tube 2 through the welding assembly 21. At the same time, all the electromagnets 10 are energized to attract the metal frame 8 into the limit block 7. At this time, the metal frame 8 compresses the spring 11;

[0052] Step S5: Subsequently, the first driving source and the second driving source are simultaneously started. The first driving source drives the screw 15 to rotate and drives the movable plate 12 to move, so that the sealing expansion assembly 13 can drive the copper tube 2 to translate through the winding machine assembly 16. At the same time, the second driving source drives the sealing expansion assembly 13 to rotate, thereby driving the copper tube 2 to rotate. At this time, the copper tube 2 rotates and translates through the winding machine assembly 16, and the annular fin 3 is spirally wound on the copper tube 2.

[0053] Step S6: When the copper tube 2 wrapped with the ring-shaped fin 3 is spirally translated, the ring-shaped fin 3 will abut against the surface of the collar 6 on the support rod 5 and drive the collar 6 to rotate, and the ring-shaped fin 3 will spiral into the space between the two limit blocks 7. At this time, the electromagnet 10 is powered off, and under the elastic force of the spring 11, the metal frame 8 will be pushed to move toward the ring-shaped fin 3 between the two limit blocks 7, and finally the abutting wheel 9 will abut against the ring-shaped fin 3;

[0054] Step S7: When the copper tube 2 has completely passed through the winding machine assembly 16 , the welding assembly 21 welds and fixes the contact portion between the annular fin 3 and the rear end of the copper tube 2 .

[0055] Step S8: The connecting plate 18 is driven to move by the output source, and the connecting plate 18 drives the winding machine assembly 16 and the grooved support platform 17 away from the processing point of the copper tube 2;

[0056] Step S9: The tail end of the copper tube 2 is then sealed by a water expansion machine assembly, and the copper tube 2 is subjected to a water expansion process so that the outer diameter of the copper tube 2 is slightly expanded;

[0057] Step S10: The copper tube 2 wrapped with the ring-shaped fins 3 is then spirally conveyed in the reverse direction. During this process, the welding assembly 21 welds all the ring-shaped fins 3 to the ring-shaped fins 3;

[0058] Step S11 : the copper tube 2 passes through the hollow circular wheel 19 when being cut, and the annular fin 3 abuts against the roller 20 .

[0059] See also Figures 1-8 As shown, it is applied to a production equipment of high-efficiency heat exchange tubes based on knurled fin copper tubes, and the production equipment includes:

[0060] The processing platform 1 has a film winding machine assembly 16 slidably mounted thereon, and is provided with a water expansion machine assembly and a knurling device assembly. The film winding machine assembly 16 is driven to move by an output source, has a through hole formed thereon, and winds the annular fin 3 onto the copper tube 2. A welding assembly 21 is fixedly mounted on the processing platform 1, and is used to weld and fix the annular fin 3 to the copper tube 2. A movable plate 12 is slidably mounted on the processing platform 1, and a sealing expansion assembly 13 is rotatably mounted on the movable plate 12 and is driven to move by a drive assembly. The sealing expansion assembly 13 cooperates with the copper tube 2 and is driven to rotate by a second drive source.

[0061] The bracket 4 is fixedly mounted on the processing platform 1 and has six circumferentially arranged support rods 5 fixedly mounted thereon. Each support rod 5 is provided with a plurality of equally spaced linearly arranged limit assemblies, and all the limit assemblies are distributed in a spiral shape.

[0062] The bracket 4 is provided with a notch 401 , which allows the movable plate 12 to pass through.

[0063] The water expansion machine assembly, knurled equipment assembly, film winding machine assembly 16, sealing expansion assembly 13 and welding assembly 21 of the present invention are all prior arts, and the present invention does not improve them. Therefore, there is no need to disclose their specific mechanical structure and circuit structure, which does not affect the integrity of the present invention; the output source can be selected from reciprocating cylinders, electric telescopic rods and other components, and other mechanisms that can achieve linear reciprocating motion can also be selected. The second driving source can be selected from servo motors, servo motors and other components, and other mechanisms that can achieve rotational motion can also be selected. This embodiment does not make specific limitations here.

[0064] In actual application of this embodiment, firstly, the knurling equipment component is used to form knurling 201 on the surface of the soft copper tube 2, and then Figure 2As shown in the figure, the winding machine component 16 is moved to the point where the copper tube 2 is processed by the output source. When the winding machine component 16 is at this point, the head end of the copper tube 2 is passed through the winding machine component 16 and is sleeved on the sealing expansion component 13. Then the sealing expansion component 13 expands. At this time, the sealing expansion component 13 seals the head end of the copper tube 2 and fixes the copper tube 2 by tightening. Then, the ring fin 3 is inserted into the winding machine component 16, and the winding machine component 16 is started to transport the ring fin 3 to the surface of the copper tube 2. The ring fin 3 is welded and fixed to the contact part of the head end of the copper tube 2 by the welding component 21. Then, the moving plate 12 is driven to move by the driving component so that the sealing expansion component 13 can drive The copper tube 2 translates through the winding machine assembly 16, and at the same time, the second driving source drives the sealing expansion assembly 13 to rotate, thereby driving the copper tube 2 to rotate. At this time, the annular fin 3 will be spirally wound on the copper tube 2 during the process of the copper tube 2 rotating and translating through the winding machine assembly 16. The copper tube 2 wrapped with the annular fin 3 will be limited by the upper limit assembly of the support rod 5 during the spiral movement, avoiding the problem that the copper tube 2 and the annular fin 3 are not welded and fixed, resulting in the annular fin 3 being easy to move. The welding assembly 21 will weld the tail end of the copper tube 2 to the annular fin 3, so that only the annular fin 3 in the middle section of the copper tube 2 is temporarily not welded, but its position is also relatively fixed under the action of the limit assembly;

[0065] like Figure 3 As shown, the winding machine assembly 16 is moved away from the copper tube 2. At this time, the tail end of the copper tube 2 is not blocked. The tail end of the copper tube 2 can be sealed by the water expansion machine assembly and then the copper tube 2 is subjected to a water expansion process to expand the outer diameter of the copper tube 2, so that the knurling 201 on the copper tube 2 is in close contact with the ring-shaped fin 3. Then, as shown in FIG. Figure 4 and Figure 5 As shown, the copper tube 2 is spirally conveyed in reverse from multiple support rods 5. During this process, the welding component 21 welds and fixes the contact between the annular fins 3 and the copper tube 2, thereby completing the processing of the copper tube 2. In this way, a small amount of copper tubes 2 and annular fins 3 can replace the heat exchange capacity that can only be achieved by a large number of copper tubes 2 in the old process, and the limiting component can maintain the stability of the position of the annular fins 3 wrapped around the copper tube 2, providing a temporary fixing measure until the copper tube 2 is unloaded after the water swelling process, and the welding component 21 welds and fixes the copper tube 2 and the annular fins 3.

[0066] The limit assembly includes two symmetrically arranged limit blocks 7, with a gap between the two limit blocks 7. The limit block 7 is fixedly installed on the support rod 5, and a metal frame 8 is slidably installed therein. An abutment wheel 9 is rotatably installed in the metal frame 8, and is connected to the limit block 7 through a spring 11. An electromagnet 10 is provided on the limit block 7. When the electromagnet 10 is energized, it sucks the metal frame 8 into the limit block 7, and the metal frame 8 compresses the spring 11. At this time, the gap between the two limit blocks 7 allows the copper tube 2 wrapped around the ring-shaped fin 3 to spirally translate into; when the electromagnet 10 is de-energized, the spring 11 pushes the metal frame 8, so that the abutment wheel 9 abuts against the ring-shaped fin 3.

[0067] In practical application, if Figure 8 As shown in the example, there are two symmetrically arranged limit blocks 7, with a gap between them. Figure 6 As shown in the example, two symmetrically arranged limit blocks 7 are fixed on the support rod 5. When the electromagnet 10 is energized, the suction force generated will cause the metal frame 8 to move into the limit block 7, so that the gap between the two limit blocks 7 is maximized. At this time, the annular fin 3 will enter the gap when it moves in a spiral manner, and when the electromagnet 10 is de-energized, the elastic force of the spring 11 will cause the metal frame 8 to move toward the annular fin 3, and finally the abutment wheel 9 will abut against the annular fin 3. Each protrusion of the annular fin 3 wrapped around the copper tube 2 will be subjected to the force applied by the two electromagnets 10, so that the annular fin 3 can maintain its position wrapped on the copper tube 2 stably without being welded and fixed to the copper tube 2. More importantly, when the copper tube 2 moves in a spiral manner, the abutment wheel 9 will roll on the surface of the annular fin 3, and the rolling friction has little effect on the movement of the annular fin 3.

[0068] like Figure 6-Figure 8 As shown, as a preferred embodiment of the present invention, there are multiple metal frames 8, and the multiple metal frames 8 are arranged in a fan shape.

[0069] In one case of this embodiment, since the annular fin 3 is spirally wound on the copper tube 2, and through the setting of multiple metal frames 8, the two metal frames 8 opposite to each other on the two limit blocks 7 are referred to as a pair of metal frames 8. The setting of multiple pairs of metal frames 8 can fit the spirally arranged annular fin 3. Under the action of the elastic force of the spring 11, the connection line of the points where different pairs of metal frames 8 abut is close to the spiral line of the annular fin 3, thereby limiting the position of the annular fin 3 at more points and ensuring that the annular fin 3 is stably fitted on the copper tube 2.

[0070] like Figure 6-Figure 7 As shown, as a preferred embodiment of the present invention, the limiting assembly also includes a ring 6, which is located in the gap and is rotatably installed on the support rod 5. When the copper tube 2 wrapped with the annular fin 3 is spirally translated, the annular fin 3 abuts against the ring 6 and drives the ring 6 to rotate.

[0071] In actual application of this embodiment, the lateral position of the annular fin 3 is limited by two limit blocks 7. When the copper tube 2 wrapped with the annular fin 3 is spirally translated, the annular fin 3 abuts against the ring 6. The ring 6 can further limit the annular fin 3 in the vertical direction, so that the annular fin 3 will not move away from the copper tube 2, and the rotation of the ring 6 can reduce the friction generated by the abutment between the ring 6 and the annular fin 3, thereby avoiding adverse effects on the spiral movement of the copper tube 2.

[0072] like Figure 1-Figure 5 As shown, as a preferred embodiment of the present invention, the driving assembly includes a fixed frame 14 and a screw 15, the fixed frame 14 is fixedly installed on the processing platform 1, the screw 15 is rotatably installed on the fixed frame 14, and is driven to rotate by the first driving source, the movable plate 12 is slidingly connected to the fixed frame 14, and is threadedly connected to the screw 15.

[0073] In one case of this embodiment, the first driving source may be a servo motor, a servo motor or other components, or other mechanisms capable of achieving rotational motion, which is not specifically limited in this embodiment.

[0074] In practical application, if Figure 1 and Figure 2 As shown in the example, when the first driving source drives the screw 15 to rotate, the screw 15 is threadedly connected to the movable plate 12, so that the screw 15 can drive the movable plate 12 to move horizontally, and by changing the rotation direction of the screw 15 by the first driving source, the movable plate 12 can be driven to move back and forth, thereby realizing the basic motion trajectory of pulling the copper tube 2 through the winding machine assembly 16 and pushing the copper tube 2 for unloading.

[0075] like Figure 1-Figure 5 As shown, as a preferred embodiment of the present invention, a hollow circular wheel 19 is fixedly installed on the processing platform 1, and a plurality of circumferentially arranged rollers 20 are rotatably installed in the hollow circular wheel 19. When the copper tube 2 wrapped with the annular fins 3 spirally passes through the hollow circular wheel 19, the annular fins 3 abut against the rollers 20 and drive the rollers 20 to rotate.

[0076] In practical application, if Figure 3 As shown in the figure, for example, the copper tube 2 wrapped with the ring-shaped fin 3 is located between the six support rods 5. At this time, the copper tube 2 is supported not only by the six support rods 5 and the limit assembly, but also by the support of the sealing expansion assembly 13. When the movable plate 12 pushes the copper tube 2 to spirally discharge, the copper tube 2 gradually moves away from the six support rods 5. Without the support of the six support rods 5, the copper tube 2 is likely to fall down. Figure 4As shown in the example, the spirally cut copper tube 2 will enter the hollow circular wheel 19, and the roller 20 will abut against the annular fin 3 to provide additional support for the annular fin 3. The annular fin 3 can drive the roller 20 to rotate when it spirals. At this time, there is rolling friction between the annular fin 3 and the roller 20. Compared with sliding friction, the resistance of rolling friction is smaller, which plays a role in assisting the cutting of the copper tube 2.

[0077] like Figure 1-Figure 5 As shown, as a preferred embodiment of the present invention, a slotted support platform 17 is slidably provided on the processing platform 1, the axis of the slot of the slotted support platform 17 coincides with the axis of the winding machine assembly 16, and the slotted support platform 17 is fixedly connected to the winding machine assembly 16 through a connecting plate 18.

[0078] In practical application, if Figure 2 As shown, in the process of the copper tube 2 gradually passing through the winding machine assembly 16, the copper tube 2 that has not passed through the winding machine assembly 16 is located in the groove on the grooved support platform 17. At this time, the groove of the grooved support platform 17 provides support for the copper tube 2. Until the copper tube 2 is wrapped around enough annular fins 3, and the six support rods 5 can provide sufficient supporting force for the annular fins 3 and the copper tube 2, the copper tube 2 will move away from the groove in the grooved support platform 17, thereby ensuring the stability of the copper tube 2 during loading.

[0079] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A production process for high-efficiency heat exchange tubes based on knurled fin copper tubes, characterized in that: The high-efficiency heat exchange tube based on the knurled fin copper tube includes: The copper tube (2) has a knurling (201) on its outer circumferential surface and is wound with annular fins (3); The process comprises the following steps: Step S1: First, a knurling device is used to process a knurling pattern (201) on the surface of a soft copper tube (2), and then the winding machine assembly (16) is pushed by an output source, so that the winding machine assembly (16) and the grooved support table (17) are moved to a point where the copper tube (2) is to be processed, and the screw (15) is driven by a first driving source to rotate and drive the movable plate (12) to move to the point where the copper tube (2) is to be processed; Step S2: inserting the ring-shaped fin (3) into the winding machine assembly (16), and sliding the copper tube (2) along the groove on the grooved support platform (17) so that the head end thereof passes through the winding machine assembly (16); Step S3: inserting the sealing expansion assembly (13) on the movable plate (12) into the head end of the copper tube (2) and expanding it, so that the sealing expansion assembly (13) seals the head end of the copper tube (2) and fixes the copper tube (2) by tightening it; Step S4: Start the winding machine assembly (16) to transport the ring-shaped fin (3) to the surface of the copper tube (2), and weld the ring-shaped fin (3) to the contact part of the head end of the copper tube (2) through the welding assembly (21), and at the same time, energize all the electromagnets (10) to adsorb the metal frame (8) into the limit block (7), and at this time, the metal frame (8) compresses the spring (11); Step S5: Subsequently, the first driving source and the second driving source are simultaneously started, the first driving source drives the screw (15) to rotate and drive the movable plate (12) to move, so that the sealing expansion component (13) can drive the copper tube (2) to move horizontally through the winding machine component (16), and at the same time, the second driving source drives the sealing expansion component (13) to rotate, thereby driving the copper tube (2) to rotate, and at this time, the annular fin (3) is spirally wound on the copper tube (2) during the process of the copper tube (2) rotating and moving horizontally through the winding machine component (16); Step S6: When the copper tube (2) wrapped with the ring-shaped fin (3) is spirally translated, the ring-shaped fin (3) will abut against the surface of the collar (6) on the support rod (5) and drive the collar (6) to rotate, and the ring-shaped fin (3) will spiral into between the two limit blocks (7). At this time, the electromagnet (10) is powered off, and under the elastic force of the spring (11), the metal frame (8) will be pushed to move toward the ring-shaped fin (3) between the two limit blocks (7), and finally the abutting wheel (9) will abut against the ring-shaped fin (3); Step S7: When the copper tube (2) has completely passed through the winding machine assembly (16), the welding assembly (21) welds and fixes the contact portion between the annular fin (3) and the rear end of the copper tube (2).

2. The production process of a high-efficiency heat exchange tube based on a knurled fin copper tube according to claim 1, characterized in that: After step S7, the following steps are further performed: Step S8: driving the connecting plate (18) to move by the output source, and the connecting plate (18) drives the winding machine assembly (16) and the grooved support platform (17) away from the point where the copper tube (2) is processed; Step S9: The tail end of the copper tube (2) is then sealed by a water expansion machine assembly, and the copper tube (2) is subjected to a water expansion process so that the outer diameter of the copper tube (2) is slightly expanded; Step S10: Subsequently, the copper tube (2) wrapped with the ring-shaped fin (3) is spirally conveyed in the reverse direction. During this process, the welding assembly (21) welds all the ring-shaped fins (3) to the ring-shaped fin (3); Step S11: The copper tube (2) passes through the hollow circular wheel (19) when being cut, and the ring-shaped fins (3) abut against the roller (20).

3. The production process of a high-efficiency heat exchange tube based on a knurled fin copper tube according to claim 1, characterized in that: The production process of the high-efficiency heat exchange tube based on the knurled fin copper tube is applied to a production equipment of the high-efficiency heat exchange tube based on the knurled fin copper tube, and the production equipment comprises: A processing platform (1) is provided with a winding machine assembly (16) which is slidably mounted on the processing platform (1), and a water expansion machine assembly is provided on the processing platform (1). The winding machine assembly (16) is driven by an output source to move, a through hole is provided on the processing platform (1), and the winding machine assembly (16) winds the ring-shaped fin (3) onto the copper tube (2). A welding assembly (21) is fixedly mounted on the processing platform (1), and the welding assembly (21) is used to weld and fix the ring-shaped fin (3) and the copper tube (2). A moving plate (12) is slidably mounted on the processing platform (1), and a sealing expansion assembly (13) is rotatably mounted on the moving plate (12), and the sealing expansion assembly (13) is driven by a driving assembly to move. The sealing expansion assembly (13) cooperates with the copper tube (2), and is driven by a second driving source to rotate. The bracket (4) is fixedly mounted on the processing platform (1), and six circumferentially arranged support rods (5) are fixedly mounted on the bracket, and each support rod (5) is provided with a plurality of equally spaced linearly arranged limit assemblies, and all the limit assemblies are distributed in a spiral shape.

4. The production process of a high-efficiency heat exchange tube based on a knurled fin copper tube according to claim 3, characterized in that: The limit assembly comprises two symmetrically arranged limit blocks (7), with a gap between the two limit blocks (7). The limit block (7) is fixedly mounted on the support rod (5), and a metal frame (8) is slidably mounted therein. An abutment wheel (9) is rotatably mounted in the metal frame (8), and is connected to the limit block (7) via a spring (11). An electromagnet (10) is provided on the limit block (7). When the electromagnet (10) is energized, it sucks the metal frame (8) into the limit block (7), and the metal frame (8) compresses the spring (11). At this time, the gap between the two limit blocks (7) allows the copper tube (2) wound around the ring-shaped fin (3) to enter in a spiral translation; when the electromagnet (10) is de-energized, the spring (11) pushes the metal frame (8) with elastic force, so that the abutment wheel (9) abuts against the ring-shaped fin (3).

5. The production process of a high-efficiency heat exchange tube based on a knurled fin copper tube according to claim 4, characterized in that: There are multiple metal frames (8), and the multiple metal frames (8) are arranged in a fan shape.

6. The production process of a high-efficiency heat exchange tube based on a knurled fin copper tube according to claim 4, characterized in that: The limiting assembly further comprises a collar (6), which is located in the gap and is rotatably mounted on the support rod (5). When the copper tube (2) wound around the annular fin (3) is spirally translated, the annular fin (3) abuts against the collar (6) and drives the collar (6) to rotate.

7. The production process of a high-efficiency heat exchange tube based on a knurled fin copper tube according to claim 4, characterized in that: The driving assembly comprises a fixed frame (14) and a screw (15), wherein the fixed frame (14) is fixedly mounted on the processing platform (1), the screw (15) is rotatably mounted on the fixed frame (14), and is driven to rotate by a first driving source, and the movable plate (12) is slidably connected to the fixed frame (14) and is threadedly connected to the screw (15).

8. The production process of a high-efficiency heat exchange tube based on a knurled fin copper tube according to claim 4, characterized in that: A hollow circular wheel (19) is fixedly mounted on the processing platform (1), and a plurality of circumferentially arranged rollers (20) are rotatably mounted inside the hollow circular wheel (19). When the copper tube (2) wound with the ring-shaped fins (3) spirally passes through the hollow circular wheel (19), the ring-shaped fins (3) abut against the rollers (20) and drive the rollers (20) to rotate.

9. The production process of a high-efficiency heat exchange tube based on a knurled fin copper tube according to claim 4, characterized in that: A slotted support platform (17) is slidably provided on the processing platform (1), the axis of the slot of the slotted support platform (17) coincides with the axis of the film winding machine assembly (16), and the slotted support platform (17) is fixedly connected to the film winding machine assembly (16) via a connecting plate (18).

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