Automatic coiling equipment for heat exchange coil

Abstract

The utility model provides a kind of heat exchange coil automatic pipe winding equipment, including operation platform, and cutting mechanism and pipe winding mechanism being set on the operation platform, the cutting mechanism is set in the upstream of the pipe winding mechanism along pipe conveying direction;The cutting mechanism has the pipe passage and cutting assembly that can be passed through by pipe material, the cutting assembly includes first driving part and cutting knife, the first driving part can drive the cutting knife movement towards the direction of the pipe passage;The pipe winding mechanism includes roller assembly and bending assembly, the bending assembly is arranged in the side of the roller assembly, and the roller assembly is cooperated with the bending assembly and can be rolled to pipe material.This heat exchange coil automatic pipe winding equipment provided by the utility model realizes that pipe material can enter the station of pipe winding mechanism to carry out pipe winding operation immediately after cutting, without manual pipe transfer work in the middle, which saves labor cost and improves the production efficiency of enterprise.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger coil rolling technology, specifically to an automatic heat exchanger coil rolling device. Background Technology

[0002] In the manufacturing process of heat exchanger coils, coiling is one of the key steps, and its quality directly affects the performance and reliability of the heat exchanger. Traditional coiling is mostly done manually, which suffers from low production efficiency, high labor intensity, and poor product consistency. Especially in mass production, manual operation makes it difficult to guarantee the precision and uniformity of coiling, easily leading to defects such as coil deformation and uneven interlayer gaps, affecting heat exchange efficiency and service life. In addition, before coiling, the coil usually needs to be cut on the operating table according to the set length, and the cut tubes are then transported to the coiling machine for coiling.

[0003] In other words, currently, factories generally divide the cutting and rolling of pipes into two workstations: one workstation manually cuts the pipes, and the cut pipes are then transported to another workstation for manual rolling. This is very inconvenient and reduces the factory's production efficiency.

[0004] Therefore, it is necessary to improve upon existing technologies and provide an automatic tube-rolling device for heat exchange coils that can automatically cut and roll tubes. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an automatic tube rolling device for heat exchanger coils that features automatic cutting and rolling operations.

[0006] To solve the above-mentioned technical problems, the technical solution used in this utility model is: an automatic heat exchanger coil winding device, including an operating table, and a cutting mechanism and a winding mechanism disposed on the operating table. The cutting mechanism is disposed upstream of the winding mechanism along the pipe conveying direction. The cutting mechanism has a pipe channel through which the pipe can pass and a cutting assembly. The cutting assembly includes a first driving member and a cutting blade. The first driving member can drive the cutting blade to move in the direction of the pipe channel. The winding mechanism includes a roller assembly and a bending assembly. The bending assembly is disposed on one side of the roller assembly. The roller assembly and the bending assembly cooperate to wind the pipe.

[0007] Preferably, the tube winding mechanism further includes a fixed base and a power assembly. The fixed base is fixed to the operating table. The roller assembly includes an upper roller group and a lower roller group. Both the upper roller group and the lower roller group can rotate relative to the fixed base. The upper roller group and the lower roller group are connected by a transmission. The power assembly can drive the other roller group to rotate through one of the roller groups. The rotation direction of the upper roller group is opposite to the rotation direction of the lower roller group.

[0008] Preferably, the upper roller assembly includes multiple upper rollers and multiple upper drive rollers, and the lower roller assembly includes multiple lower rollers and multiple lower drive rollers. The multiple upper drive rollers and multiple lower drive rollers are respectively mounted on the fixed base at intervals along the length direction of the fixed base. The lower drive rollers are located below the upper drive rollers. Each upper drive roller has an upper roller fixed at both ends, and each lower drive roller has a lower roller fixed at both ends. The upper drive rollers and lower drive rollers are also connected to the power assembly for transmission. The power assembly can drive the upper rollers and lower rollers to rotate relative to the fixed base through the upper drive rollers and lower drive rollers.

[0009] Preferably, the power assembly includes a motor, a transmission chain, and a gear set. The gear set includes a first gear fixed on the upper transmission roller and a second gear fixed on the lower transmission roller. The first gear and the second gear mesh with each other for transmission. A sprocket is also fixedly mounted on one of the transmission rollers. The transmission chain is sleeved on the sprocket and connected to the motor. The motor can drive the upper and lower transmission rollers to rotate synchronously in opposite directions.

[0010] Preferably, the bending assembly includes an adjusting part, a bending roller, and a bending roller. The bending roller is connected to both ends of the bending roller, and the adjusting part is connected to the bending roller. The adjusting part can control the bending roller to move in a direction perpendicular to the pipe conveying direction, so as to control the diameter of the pipe roll.

[0011] Preferably, the roller assembly includes an upper roller group and a lower roller group, the upper roller group includes an upper roller, the lower roller group includes a lower roller, and the adjusting part can control the bending roller to move in a direction perpendicular to the pipe conveying direction. When the bending roller moves, it can abut against the upper roller or the lower roller.

[0012] Preferably, the adjustment part includes a mounting base, a connecting block, and a power source. The mounting base is provided with a guide rail along its height direction. The bending roller is connected to the connecting block. The power source can drive the connecting block to move along the guide rail, so as to drive the bending roller to move in a direction perpendicular to the pipe conveying and abut against the upper roller or the lower roller.

[0013] Preferably, the roller assembly includes an upper roller group and a lower roller group. The upper roller group includes an upper roller and an upper drive roller, and the lower roller group includes a lower roller and a lower drive roller. The upper roller and the upper drive roller, as well as the lower roller and the lower drive roller, are detachably connected. There is a gap between the upper roller and the lower roller that allows the pipe to pass through, and the gap is at the same horizontal height as the pipe channel.

[0014] Preferably, the device further includes a straightening mechanism, which is located upstream of the cutting mechanism along the pipe conveying direction. The straightening mechanism includes a base and a straightening wheel assembly rotatably connected to the base. The straightening wheel assembly includes at least two opposing straightening wheels, with a conveying port for pipe passage formed between the two straightening wheels. The conveying port and the pipe channel are located at the same horizontal level. The straightening wheel assembly has multiple sets, which are spaced apart along the length direction of the base.

[0015] Preferably, it further includes a limiting baffle, the roller assembly includes a lower roller group, the limiting baffle is fixed to the operating table and located below the lower roller group.

[0016] The beneficial effects of this utility model are mainly reflected in the following: the automatic tube winding equipment for heat exchange coils provided by this utility model enables the tubes to be immediately wound into the tube winding mechanism after being cut, without the need for manual transfer of the tubes in the middle, which saves labor costs and improves the production efficiency of enterprises. Attached Figure Description

[0017] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this invention.

[0018] Figure 1 This is a schematic diagram of the automatic tube winding device in this utility model from a frontal view.

[0019] Figure 2 This is a three-dimensional structural diagram of the automatic tube winding device in this utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the tube winding mechanism in this utility model;

[0021] Figure 4 This is a top view of the tube winding mechanism in this utility model.

[0022] Figure 5 This is a schematic diagram of power transmission in a preferred embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of power transmission in another preferred embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the overall structure of the bending component in this utility model;

[0025] Figure 8 This is a schematic diagram of the overall structure of the cutting mechanism in this utility model;

[0026] Figure 9 This is a cross-sectional structural diagram of the cutting mechanism in this utility model;

[0027] In the diagram: Control panel 1, limit baffle 11;

[0028] Cutting mechanism 2, pipe channel 20, cutting assembly 21, first driving component 210, cutting blade 211, second driving component 212, support base 22, connecting pipe 23, support plate 24, positioning wheel 240;

[0029] The tube winding mechanism includes: roller assembly 30, upper roller group 301, upper roller 3010, upper transmission roller 3011, lower roller group 302, lower roller 3020, lower transmission roller 3021, bending assembly 31, adjusting part 310, mounting base 3101, guide slide rail 3102, connecting block 3103, power source 3104, bending roller 311, bending roller 312, fixed base 32, power assembly 33, motor 330, transmission chain 331, first gear 332, second gear 333, sprocket 334, and intermediate gear 335.

[0030] Alignment mechanism 4, base 40, alignment wheel set 41. Detailed Implementation

[0031] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0032] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] refer to Figure 1-9 This utility model provides an automatic heat exchanger coil winding device, including an operating table 1, and a cutting mechanism 2 and a winding mechanism 3 disposed on the operating table 1. The cutting mechanism 2 is disposed upstream of the winding mechanism 3 along the pipe (e.g., stainless steel pipe or copper pipe, etc.) conveying direction; that is, in the pipe conveying path, the cutting mechanism 2 is located in front of the winding mechanism 3. The pipe is first cut to a predetermined length by the cutting mechanism 2, and then enters the winding mechanism 3 for winding. The cutting mechanism 2 has a pipe channel 20 through which the pipe can pass and a cutting assembly 21. The cutting assembly 21 includes a first driving member 210 (e.g., a cylinder) and a cutting blade 211. The first driving member 210 can drive the cutting blade 211 to move in the direction of the pipe channel 20, thereby cutting the pipe. The winding mechanism 3 includes a roller assembly 30 and a bending assembly 31. The bending assembly 31 is disposed on one side of the roller assembly 30. The roller assembly 30 and the bending assembly 31 cooperate to wind the pipe. Specifically, when the pipe reaches the position of the bending assembly 31, a certain force is applied to the pipe by the bending assembly 31, causing the pipe to bend and deform along a certain arc, thereby forming a heat exchange coil.

[0035] The automatic heat exchanger coil winding equipment provided by this utility model has the following advantages compared with the prior art: by integrating a cutting mechanism 2 and a winding mechanism 3 on the operating table 1, the tube can be immediately wound into the winding mechanism 3 after being cut, without the need for manual transfer of the tube in the middle, which saves labor costs and improves the production efficiency of the enterprise.

[0036] refer to Figure 1-2 In a further preferred embodiment, the cutting assembly 21 further includes a second driving member 212 (such as a motor). The second driving member 212 is connected to the cutting blade 211 and can drive the cutting blade 211 to rotate. The first driving member 210 first drives the cutting blade 211 to move towards the pipe channel 20 until the cutting blade 211 abuts against the pipe. Then, the second driving member 212 drives the cutting blade 211 to rotate. During the rotation of the cutting blade 211, the cutting work of the pipe is completed.

[0037] refer to Figure 1-28-9. The cutting mechanism 2 also includes a support base 22 slidably connected to the operating table 1. The first driving member 210 and the second driving member 212 are respectively fixed on the support base 22. The support base 22 is provided with a connecting pipe 23 and a support plate 24. The two ends of the connecting pipe 23 pass through the support base 22 and the support plate 24. The pipe channel 20 is located inside the connecting pipe 23. A cutting blade 211 and a positioning wheel 240 are spaced apart on one side of the support plate 24. The first driving member 210 can drive the cutting blade 211 and the positioning wheel 240 to move simultaneously toward the pipe channel 20 (i.e., radially approach), so that the positioning wheel 240 can abut against the pipe, and then the cutting blade 211 cuts, thereby maintaining the stability of the cutting. After the cutting is completed, the first driving member 210 simultaneously drives the cutting blade 211 and the positioning wheel 240 to move away from each other to avoid obstructing the conveying of the pipe. The working principle of the cutting mechanism 2 is a technology well known to those skilled in the art, and will not be described in detail here.

[0038] refer to Figure 1-4 In a preferred embodiment, the tube winding mechanism 3 further includes a fixed base 32 and a power assembly 33. The fixed base 32 is fixed on the operating table 1 and provides stable support for the installation of the roller assembly 30. The roller assembly 30 includes an upper roller group 3010 301 and a lower roller group 3020 302. Both the upper roller group 3010 301 and the lower roller group 3020 302 can rotate relative to the fixed base 32. The upper roller group 3010 301 and the lower roller group 3020 302 cooperate with each other to transport the tube during rotation. The upper roller group 3010 301 and the lower roller group 3020 302 are connected by a transmission. The power assembly 33 can drive the other roller group to rotate through one of the roller groups. The rotation direction of the upper roller group 3010 301 is opposite to the rotation direction of the lower roller group 3020 302. In this embodiment, when the pipe enters between the upper roller group 3010 301 and the lower roller group 3020 302, the upper and lower roller groups 3020 302 rotate in opposite directions, thereby generating a relative frictional force. This frictional force can effectively drive the pipe forward. At the same time, during the pipe winding process, the opposite rotation direction also helps the pipe to bend and deform under the action of the roller group, forming the desired rolled pipe shape.

[0039] refer to Figure 1-4In a preferred embodiment, the upper roller group 3010 group 301 includes multiple upper rollers 3010 and multiple upper drive rollers 3011, and the lower roller group 3020 group 302 includes multiple lower rollers 3020 and multiple lower drive rollers 3021. The multiple upper drive rollers 3011 and multiple lower drive rollers 3021 are respectively mounted on the fixed base 32 at intervals along the length direction of the fixed base 32 and can rotate relative to the fixed base 32. The lower drive rollers 3021 are located below the upper drive rollers 3011. Each upper drive roller 3011 has an upper roller 3010 fixed at both ends, and each lower drive roller 3021 has a lower roller 3020 fixed at both ends. The upper drive rollers 3011 and lower drive rollers 3021 are also connected to the power component 33 for transmission. The power component 33 can drive the upper rollers 3010 and lower rollers 3020 to rotate relative to the fixed base 32 through the upper drive rollers 3011 and lower drive rollers 3021.

[0040] In this embodiment, by respectively providing rollers (upper roller 3010 and lower roller 3020) at both ends of each transmission roller (each upper transmission roller 3011 and each lower transmission roller 3021), when the transmission roller rotates relative to the fixed base 32, the rollers at both ends also rotate together. Therefore, processing positions (such as...) can be formed on both sides of the fixed base 32. Figure 4 As shown, roller assemblies 30 are formed on both sides of the fixed base 32, which can synchronously roll the pipe, further improving production efficiency. On the other hand, by setting multiple rollers (including upper roller 3010 and lower roller 3020), during the pipe conveying process, the front roller (referring to the roller near the cutting mechanism 2) can further straighten the cut pipe, and then the rear roller (referring to the two rollers closest to the bending assembly 31) cooperates with the bending assembly 31 to roll the pipe, ensuring better quality of the rolled coil.

[0041] In a preferred embodiment, the upper roller 3010 and the upper drive roller 3011, and the lower roller 3020 and the lower drive roller 3021, are detachably connected (for example, the rollers and drive rollers can be detachably connected by threaded connections). This detachable design allows workers to easily replace different rollers according to different pipe processing specifications to meet rolling requirements, avoiding the need to repeatedly change equipment, thus increasing production efficiency. There is a gap between the upper roller 3010 and the lower roller 3020 for the pipe to pass through, and this gap is at the same horizontal level as the pipe channel 20. Generally, in a coiling device, each roller has a groove. This groove is arranged around the roller. When the upper roller 3010 and the lower roller 3020 are installed in place, the grooves of the two rollers are aligned with each other, thus forming a certain gap. This gap allows the pipe to pass through, and the pipe is conveyed by the rotation of the upper and lower rollers 3020. Furthermore, this gap is at the same horizontal level as the pipe channel 20, which is conducive to the stable conveying of the pipe and avoids displacement during the conveying process.

[0042] refer to Figure 3 and 5 In a preferred embodiment, the power assembly 33 includes a motor 330, a transmission chain 331, and a gear set. The motor 330 is fixed under the operating table 1. The gear set includes a first gear 332 fixed on the upper transmission roller 3011 and a second gear 333 fixed on the lower transmission roller 3021. The first gear 332 and the second gear 333 mesh with each other, thus achieving synchronous reverse rotation between the upper and lower transmission rollers. Transmission between adjacent upper transmission rollers 3011 or adjacent lower transmission rollers 3021 can be achieved through the meshing of an intermediate gear 335 with the first gear 332 / second gear 333. A sprocket 334 is also fixedly mounted on one of the transmission rollers. The transmission chain 331 is sleeved on the sprocket 334 and connected to the motor 330. The motor 330 can drive the upper transmission roller 3011 and the lower transmission roller 3021 to rotate synchronously in opposite directions. (Refer to the attached diagram) Figure 5 The diagram illustrates the power transmission mechanism. For example, sprocket 334 is fixed to the lower drive roller 3021A. The lower drive roller 3021A and the upper drive roller 3011A' are driven by the meshing of the first gear 332 and the second gear 333. The lower drive roller 3021A and the lower drive roller 3021B are driven by the meshing of the intermediate gear 335. Similarly, the lower drive roller 3021B and the upper drive roller 3011B' are driven by the meshing of the first gear 332 and the second gear 333, thereby transmitting the power from the lower drive roller 3021A to the lower drive roller 3021B.

[0043] The specific power transmission process of the power component 33 is as follows: When the motor 330 is working, it drives the transmission chain 331 to rotate. Under the drive of the transmission chain 331, the sprocket 334 rotates and drives the transmission roller (upper transmission roller 3011 or lower transmission roller 3021, depending on the installation position of the sprocket 334) to rotate. Since the transmission rollers are meshed with each other through gears, all transmission rollers rotate under the drive of the motor 330.

[0044] refer to Figure 3 and 6 Furthermore, to improve the transmission effect, another embodiment is provided: sprockets 334 are fixed to two adjacent upper transmission rollers 3011 or two adjacent lower transmission rollers 3021 respectively. A transmission chain 331 is sleeved on the two sprockets 334 and driven by a motor 330, causing the two transmission rollers to rotate synchronously. Similarly, the upper and lower transmission rollers are transmitted through the meshing of a first gear 332 and a second gear 333. By simultaneously driving the two transmission rollers to rotate, the transmission efficiency is further improved. It should be noted that when this embodiment is adopted, since the motor 330 can simultaneously drive the two transmission rollers to rotate, the two transmission rollers fixed with sprockets 334 (e.g., Figure 6 Between the lower drive rollers 3021C and 3021D, and the other two drive rollers that directly mesh with these two drive rollers (e.g., Figure 6 Neither the upper drive roller 3011E nor the upper drive roller 3011F needs to be equipped with an intermediate gear 335 for transmission, thus avoiding jamming or jamming. Of course, other methods besides these two implementations can also be used to achieve the same technical effect.

[0045] refer to Figure 7 In a preferred embodiment, the bending assembly 31 includes an adjusting part 310, a bending roller 311, and a bending roller 312. The bending roller 312 is connected to both ends of the bending roller 311. The adjusting part 310 is connected to the bending roller 311. The adjusting part 310 can control the bending roller 312 to move in a direction perpendicular to the pipe conveying direction, thereby controlling the diameter of the rolled pipe. That is, the adjusting part 310 can control the bending roller 312 to move up and down in a vertical direction (the vertical direction is perpendicular to the pipe conveying direction), thereby affecting the bending curvature of the pipe and adjusting the diameter of the rolled coil.

[0046] refer to Figure 1-3In a further preferred embodiment, the roller assembly 30 includes an upper roller group 3010 301 and a lower roller group 3020 302. The upper roller group 3010 301 includes an upper roller 3010, and the lower roller group 3020 302 includes a lower roller 3020. The adjusting part 310 can control the bending roller 312 to move in a direction perpendicular to the pipe conveying direction. When the bending roller 312 moves, it can abut against the upper roller 3010 or the lower roller 3020. Specifically, when the bending roller 312 moves upward until it abuts against the upper roller 3010, the diameter of the coiled pipe reaches its maximum. When the bending roller 312 moves downward until it abuts against the lower roller 3020, the diameter of the coiled pipe reaches its minimum.

[0047] refer to Figure 7 In a preferred embodiment, the adjustment unit 310 includes a mounting base 3101, a connecting block 3103, and a power source 3104. The mounting base 3101 is provided with a guide rail 3102 along its height direction. The bending roller 311 is connected to the connecting block 3103. The power source 3104 can drive the connecting block 3103 to move along the guide rail 3102, so as to drive the bending roller 312 to move in a direction perpendicular to the pipe conveying and abut against the upper roller 3010 or the lower roller 3020. In this embodiment, the power source 3104 can be driven by a motor 330 and a lead screw. Specifically, the motor 330 is fixed on the mounting base 3101, and its output end is connected to the lead screw. The lead screw is also connected to the connecting block 3103, and the connecting block 3103 is also connected to the bending roller 311. The power of the motor 330 is converted into axial force through the lead screw (to realize the up and down movement of the lead screw). The lead screw drives the bending roller 311 to move up and down. As the bending roller 311 moves, the bending roller 312 naturally moves up and down as well, making the whole adjustment process more stable.

[0048] refer to Figure 1 and 2In a preferred embodiment, a straightening mechanism 4 is further included, which is located upstream of the cutting mechanism 2 along the pipe conveying direction. The straightening mechanism 4 includes a base 40 and a straightening wheel assembly 41 rotatably connected to the base 40 (the straightening wheel assembly 41 is driven by a drive source (such as a motor) to rotate relative to the base 40). The straightening wheel assembly 41 includes at least two opposing straightening wheels, with a conveying port for the pipe to pass through formed between the two straightening wheels. The conveying port and the pipe channel 20 are located at the same horizontal level. The straightening wheel assembly 41 has multiple sets, which are spaced apart along the length of the base 40. In practice, because a whole pipe is very long and inconvenient to transport, manufacturers may pre-roll the pipe to form a large coil for easier transport. However, at the processing plant, the coil needs to be rolled according to different specifications. Therefore, the coiled pipe needs to be pre-straightened and cut to a certain length before being rolled again. Therefore, in this embodiment, by setting the straightening mechanism 4, the pre-straightening of the pipe can be achieved, so as to facilitate the cutting of the next process.

[0049] refer to Figure 1 and 2 In a preferred embodiment, a limiting baffle 11 is also included. The roller assembly 30 includes a lower roller 3020 group 302. The limiting baffle 11 is fixed to the operating table 1 and located below the lower roller 3020 group 302. In this embodiment, the limiting baffle 11 can ensure that the path of the coil is always outward during the winding process (outward means towards the outside of the operating table 1), avoiding inward deviation or deviation due to stress during the winding process.

[0050] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An automatic heat exchanger coil winding device, characterized in that: The device includes an operating table, and a cutting mechanism and a tube winding mechanism disposed on the operating table. The cutting mechanism is disposed upstream of the tube winding mechanism along the tube conveying direction. The cutting mechanism has a tube channel through which the tube can pass and a cutting assembly. The cutting assembly includes a first driving member and a cutting blade. The first driving member can drive the cutting blade to move in the direction of the tube channel. The tube winding mechanism includes a roller assembly and a bending assembly. The bending assembly is disposed on one side of the roller assembly. The roller assembly and the bending assembly cooperate to wind the tube.

2. The automatic heat exchanger coil winding equipment as described in claim 1, characterized in that, The tube winding mechanism also includes a fixed base and a power assembly. The fixed base is fixed to the operating table. The roller assembly includes an upper roller group and a lower roller group. Both the upper roller group and the lower roller group can rotate relative to the fixed base. The upper roller group and the lower roller group are connected by a transmission. The power assembly can drive the other roller group to rotate through one of the roller groups. The rotation direction of the upper roller group is opposite to the rotation direction of the lower roller group.

3. The automatic heat exchanger coil winding equipment as described in claim 2, characterized in that, The upper roller assembly includes multiple upper rollers and multiple upper drive rollers, and the lower roller assembly includes multiple lower rollers and multiple lower drive rollers. The multiple upper drive rollers and multiple lower drive rollers are respectively mounted on the fixed base at intervals along the length direction of the fixed base. The lower drive rollers are located below the upper drive rollers. Each upper drive roller has an upper roller fixed at both ends, and each lower drive roller has a lower roller fixed at both ends. The upper drive rollers and the lower drive rollers are also connected to the power assembly for transmission. The power assembly can drive the upper rollers and lower rollers to rotate relative to the fixed base through the upper drive rollers and lower drive rollers.

4. The automatic heat exchanger coil winding equipment as described in claim 3, characterized in that, The power assembly includes a motor, a transmission chain, and a gear set. The gear set includes a first gear fixed on the upper transmission roller and a second gear fixed on the lower transmission roller. The first gear and the second gear mesh with each other for transmission. A sprocket is also fixedly mounted on one of the transmission rollers. The transmission chain is sleeved on the sprocket and connected to the motor. The motor can drive the upper and lower transmission rollers to rotate synchronously in opposite directions.

5. The automatic heat exchanger coil winding equipment as described in claim 1, characterized in that, The bending assembly includes an adjusting part, a bending roller, and a bending roller. The bending roller is connected to both ends of the bending roller. The adjusting part is connected to the bending roller. The adjusting part can control the bending roller to move in a direction perpendicular to the pipe conveying direction in order to control the diameter of the pipe roll.

6. The automatic heat exchanger coil winding equipment as described in claim 5, characterized in that, The roller assembly includes an upper roller group and a lower roller group. The upper roller group includes an upper roller, and the lower roller group includes a lower roller. The adjusting part can control the bending roller to move in a direction perpendicular to the pipe conveying direction. When the bending roller moves, it can abut against the upper roller or the lower roller.

7. The automatic heat exchanger coil winding equipment as described in claim 6, characterized in that, The adjustment unit includes a mounting base, a connecting block, and a power source. The mounting base is provided with a guide rail along its height direction. The bending roller is connected to the connecting block. The power source can drive the connecting block to move along the guide rail, so as to drive the bending roller to move in a direction perpendicular to the pipe conveying and abut against the upper roller or the lower roller.

8. The automatic heat exchanger coil winding equipment as described in claim 1, characterized in that, The roller assembly includes an upper roller group and a lower roller group. The upper roller group includes an upper roller and an upper drive roller, and the lower roller group includes a lower roller and a lower drive roller. The upper roller and the upper drive roller, as well as the lower roller and the lower drive roller, are detachably connected. There is a gap between the upper roller and the lower roller that allows the pipe to pass through, and the gap is at the same horizontal height as the pipe channel.

9. The automatic heat exchanger coil winding equipment as described in claim 1, characterized in that, It also includes a straightening mechanism, which is located upstream of the cutting mechanism along the pipe conveying direction; the straightening mechanism includes a base and a straightening wheel assembly rotatably connected to the base, the straightening wheel assembly including at least two oppositely arranged straightening wheels, a conveying port for pipe to pass through is formed between the two straightening wheels, the conveying port and the pipe channel are located at the same horizontal height; the straightening wheel assembly has multiple sets, and the multiple sets of straightening wheel assemblies are arranged at intervals along the length direction of the base.

10. The automatic heat exchanger coil winding equipment as described in claim 1, characterized in that, It also includes a limiting baffle, and the roller assembly includes a lower roller group. The limiting baffle is fixed to the operating table and is located below the lower roller group.

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