Air conditioner U tube double station feeding device

Abstract

The utility model relates to a kind of air conditioner U pipe double-station feeding device.The utility model discloses a kind of air conditioner U pipe double-station feeding device, including: including support frame, sliding frame, first lifting drive cylinder and clamping seat, sliding frame is set on support frame along vertical sliding, first lifting drive cylinder is fixed on support frame, its output end is provided with the clamping seat connected with sliding frame, clamping seat is provided with first clamping mechanism and second clamping mechanism, first clamping mechanism includes telescopic drive cylinder and first clamping plate, telescopic drive cylinder is set on clamping seat, drive first clamping plate moves second clamping mechanism includes servo drive cylinder, screw rod and second clamping plate, servo drive cylinder is set on clamping seat, drive screw rod rotation, the screw rod slider of screw rod is connected with second clamping plate, to drive second clamping plate moves.The utility model discloses a kind of air conditioner U pipe double-station feeding device, with the advantages of compact structure, high production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner manufacturing, and in particular to a dual-station feeding device for air conditioner U-tubes. Background Technology

[0002] Air conditioners achieve heating or cooling through heat exchangers. Their structure typically includes fins for heat exchange and U-tubes inserted within the fins. Refrigerant flows within the U-tubes, achieving heat exchange with the air. To improve heat exchange efficiency, a double-layer U-tube heat exchanger has emerged on the market. This involves two layers of U-tubes inserted into the fins, with the upper and lower U-tubes staggered, as illustrated in existing patent CN110948194A. Figure 3 The double-layer flat-insertion structure shown is required during the manufacturing process of this heat exchanger. This requires two tube-insertion stations to insert the two layers of U-tubes, resulting in a large tube-insertion equipment with a complex overall structure. Furthermore, multiple robotic arms are needed to assist in handling the fins, leading to high production costs and low efficiency, failing to meet the manufacturer's production needs. Utility Model Content

[0003] Based on this, the purpose of this utility model is to provide a dual-station feeding device for air conditioning U-tubes, which has the advantages of compact structure and high production efficiency.

[0004] A dual-station feeding device for air conditioning U-tubes includes a mounting frame and a clamping assembly mounted on the mounting frame. The clamping assembly is used to clamp fins and includes a support frame, a sliding frame, a first lifting drive cylinder, and a clamping seat. The sliding frame is vertically slidably mounted on the support frame. The first lifting drive cylinder is fixed on the support frame, and its output end is provided with the clamping seat connected to the sliding frame. The bottom of the clamping seat is provided with a first clamping mechanism and a second clamping mechanism arranged opposite to each other. The first clamping mechanism includes a telescopic drive cylinder and a first clamping plate. The telescopic drive cylinder is mounted on the clamping seat and drives the first clamping plate to move closer to or away from the second clamping mechanism. The second clamping mechanism includes a servo drive cylinder, a lead screw, and a second clamping plate. The servo drive cylinder is mounted on the clamping seat and drives the lead screw to rotate. The lead screw slider is connected to the second clamping plate, thereby driving the second clamping plate to move closer to or away from the first clamping plate.

[0005] The present invention discloses a dual-station feeding device for air conditioning U-tubes. This structure, through the cooperation of a first lifting drive cylinder, a telescopic drive cylinder, and a servo drive cylinder, allows the fins held by the clamping plate to move between two tube-threading stations. Only one tube-threading device is needed to realize the tube-threading operation of double-layer U-tubes, making the structure more compact and simple, and improving production efficiency.

[0006] Furthermore, the first clamping mechanism further includes a first pressure plate, which is fixed to the first clamping plate and extends horizontally towards the second clamping mechanism, with the bottom surface of the first pressure plate not lower than the bottom surface of the first clamping plate; the second clamping mechanism further includes a second pressure plate located on the same plane as the first pressure plate, which is fixed to the second clamping plate and extends horizontally towards the first clamping mechanism. This structure presses and positions the fins, allowing the fins to move accurately between the two workstations with the clamping assembly.

[0007] Furthermore, the sliding frame includes a sliding plate, a lifting buffer seat, and a buffer pad. The sliding plate is slidably mounted on the support frame via a lifting rail. The lifting buffer seat is fixedly mounted on the top of the sliding plate, and the buffer pad is disposed on the bottom surface of the lifting buffer seat and corresponds to the support frame in the lifting and sliding direction. This structure can limit the sliding stroke of the sliding frame and prevent it from slipping off.

[0008] Furthermore, the bottom of the clamping seat is provided with two transverse slide rail mounting seats. The first clamping mechanism also includes a first transverse slide rail, a first slider connecting plate, and a first drive plate. There are two first transverse slide rails, each disposed on one side of one of the two transverse slide rail mounting seats. The first slider connecting plate is slidably disposed on the transverse slide rail mounting seat via the first transverse slide rail. The first drive plate spans between the two first slider connecting plates. The first clamping plate is disposed on the side of the first drive plate away from the second clamping mechanism. The output end of the telescopic drive cylinder is connected to the first drive plate. The second clamping mechanism also includes a second transverse slide rail, a second slider connecting plate, and a second drive plate. There are two second transverse slide rails, each disposed on the other side of one of the two transverse slide rail mounting seats. The sliding stroke of the second transverse slide rail is greater than that of the first transverse slide rail. The second slider connecting plate is slidably disposed on the transverse slide rail mounting seat via the second transverse slide rail. The second drive plate spans between the two second slider connecting plates. The second clamping plate is disposed on the side of the second drive plate away from the first clamping mechanism. The lead screw slider of the lead screw is connected to the second drive plate. This structure can improve the sliding stability of the clamping mechanism.

[0009] Furthermore, the support frame includes a support plate and a mounting plate. There are two support plates spaced laterally, forming an accommodating space between them. Each support plate has a lifting rail on its side facing the accommodating space. A sliding frame is positioned between the two support plates. There are two sliding plates, each connected to one of the two lifting rails. The mounting plate spans between the two support plates, and the first lifting drive cylinder is mounted on the mounting plate. This structure improves the stability of the sliding frame's movement relative to the support frame.

[0010] Furthermore, the mounting plate has horizontal fixing holes on both sides at its bottom. Screws pass through the support plate and are threaded into the mounting plate. Mounting bosses protrude from the support plate on both sides at its top, abutting against the top surface of the support plate. Screws pass vertically through the mounting bosses and are then fixed to the support plate. This structure ensures the mounting plate is stably mounted on the support frame while maintaining sufficient structural strength and reasonable stress distribution.

[0011] Furthermore, it also includes a support assembly corresponding to the clamping assembly, comprising a feeding panel, a lifting support plate, and a second lifting drive cylinder. The feeding panel supports the fins clamped by the clamping assembly. The cylinder body of the second lifting drive cylinder is mounted on the lifting support plate, and its output end is connected to the feeding panel via a connecting flange, thereby driving the feeding panel to move up and down. This structure can improve the accuracy of the fin's lifting and moving by supporting it, reducing fin displacement errors caused by factors such as the stroke error of the second lifting drive cylinder.

[0012] Furthermore, the bottom surface of the feeding panel is provided with four reinforcing ribs, which are arranged around the connecting flange in an "A" shape. This structure can improve the structural strength of the feeding panel, ensure the levelness of the fins, and allow the U-tube to be accurately inserted into the fins.

[0013] Furthermore, the feeding panel is also equipped with guide shafts and limiting blocks. Multiple guide shafts are arranged circumferentially, and the limiting blocks have a U-shaped structure with both ends connected to the feeding panel. The lifting support plate is also equipped with guide cylinders and limiting seats. The guide cylinders are slidably connected to the guide shafts. The lifting support plate also has through holes corresponding to the guide cylinders, and the guide shafts slide through these through holes. The limiting seats have limiting holes, and the middle portion of the limiting blocks passes through these limiting holes. This structure guides the feeding panel, preventing displacement of the feeding panel from causing errors in fin movement.

[0014] Furthermore, the lifting support plate is also provided with two symmetrically arranged adjusting bases on both sides of the second lifting drive cylinder. Each adjusting block has a vertically extending elongated slot. There are two adjusting blocks, each connected to the adjusting base by a screw passing through the elongated slot. A buffer block is provided on the top of each adjusting block, corresponding to the feeding panel. This structure can buffer the feeding panel and limit its movement.

[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a front view of the dual-station feeding device for air conditioning U-tubes described in this utility model; Figure 2 This is a structural diagram of the dual-clamping assembly; Figure 3 A structural diagram of a single clamping component; Figure 4 Here are structural diagrams of the first clamping mechanism and the second clamping mechanism; Figure 5 A structural diagram of the supporting components; Figure 6 This is a structural diagram of the feeding panel; Figure 7 This is a structural diagram of the lifting support plate and the second lifting drive cylinder. Explanation of reference numerals in the attached drawings: 1. Mounting bracket; 2. Clamping assembly; 21. Support frame; 211. Support plate; 212. Mounting plate; 213. Lifting slide rail; 214. Mounting boss; 22. Sliding frame; 221. Sliding plate; 222. Lifting buffer seat; 223. Buffer pad; 23. First lifting drive cylinder; 24. Clamping seat; 25. First clamping mechanism; 251. First transverse slide rail; 252. First slider connecting plate; 253. First drive plate; 254. First clamping plate; 255. First pressure plate; 256. Telescopic drive cylinder 26. Second clamping mechanism; 261. Second transverse slide rail; 262. Second slider connecting plate; 263. Second drive plate; 264. Second clamping plate; 265. Second pressure plate; 266. Servo drive cylinder; 267. Lead screw; 3. Support assembly; 31. Feeding panel; 311. Reinforcing rib; 312. Guide shaft; 313. Limit block; 32. Lifting support plate; 321. Guide cylinder; 322. Adjusting base; 323. Adjusting block; 324. Buffer block; 325. Limit seat; 33. Second lifting drive cylinder. Detailed Implementation

[0017] Please see Figure 1-7 , Figure 1 This is a front view of the dual-station feeding device for air conditioning U-tubes described in this utility model; Figure 2 This is a structural diagram of the dual-clamping assembly; Figure 3 A structural diagram of a single clamping component; Figure 4 Here are structural diagrams of the first clamping mechanism and the second clamping mechanism; Figure 5 A structural diagram of the supporting components; Figure 6 This is a structural diagram of the feeding panel; Figure 7 This is a structural diagram of the lifting support plate and the second lifting drive cylinder.

[0018] To improve tube threading efficiency, this embodiment can enable one tube threading machine to perform tube threading operations on two layers of staggered U-tubes. Since the U-tubes are fed by the same device and their positions do not change, it is necessary to realize the lifting and lateral movement of the fins during the tube threading process so that both batches of U-tubes can be successfully threaded into the fins.

[0019] This utility model discloses a dual-station loading device for air conditioning U-tubes, including a mounting frame 1 and a clamping assembly 2. The clamping assembly 2 is mounted on the mounting frame 1 and is used to clamp and release the fins. The number of clamping assemblies 2 can be one; in this embodiment, there are two clamping assemblies 2 distributed laterally (i.e., in the loading and unloading direction, which is left-right in the figure, with the fins to be threaded and the fins that have been threaded placed on opposite sides of the loading device). This allows for simultaneous loading and unloading after both layers of U-tubes have completed the threading process, improving production efficiency. The mounting frame 1 is driven laterally by an external device, which in turn moves the clamping assembly 2 to transport the fins.

[0020] The clamping assembly 2 includes a support frame 21, a sliding frame 22, a first lifting drive cylinder 23, a clamping seat 24, a first clamping mechanism 25, and a second clamping mechanism 26. The sliding frame 22 is slidably mounted on the support frame 21. The first lifting drive cylinder 23 is fixed on the support frame 21 and drives the clamping seat 24 connected to the sliding frame 22 to move up and down, thereby driving the first clamping mechanism 25 and the second clamping mechanism 26 located at the bottom of the clamping seat 24 to move up and down. The first clamping mechanism 25 and the second clamping mechanism 26 cooperate to clamp and transport the fins.

[0021] The support frame 21 includes a support plate 211 and a mounting plate 212. There are two support plates 211 spaced laterally, forming an accommodating space between them. Each support plate 211 has a lifting slide rail 213 on its side facing the accommodating space. This lifting slide rail 213 is a linear guide rail extending vertically and has a double-slider structure to improve sliding stability. A sliding frame 22 is positioned between the two support plates 211, with its two sides connected to the two lifting slide rails 213 respectively, allowing it to slide up and down relative to the support plates 211. The mounting plate 212 spans between the two support plates 211. To achieve the installation and fixation of the mounting plate 212 while ensuring its structural strength, horizontal fixing holes are provided on the bottom of both sides of the mounting plate 212. Screws pass through the support plate 211 and are threadedly connected to the mounting plate 212. Mounting bosses 214 protruding towards the support plate 211 are provided on the top of both sides of the mounting plate 212. The mounting bosses 214 abut against the top surface of the support plate 211, and screws pass vertically through the mounting bosses 214 and are fixed to the support plate 211.

[0022] The sliding frame 22 includes two sliding plates 221, each connected to a lifting slide rail 213, thus slidably mounted on the support frame 21. To limit the movement of the sliding frame 22, a lifting buffer seat 222 is provided on the top of each of the two sliding plates 221. The lifting buffer seat 222 has a buffer pad 223 with its bottom end opposite to the support plate 211. The buffer pad 223 is made of flexible material and can be directly mounted on the bottom surface of the lifting buffer seat 222, or mounted on the bottom surface of the lifting buffer seat 222 via an elastic element (such as a spring), or located at the output end of a linear drive cylinder that passes through the lifting buffer seat 222, thereby adjusting the height of the buffer pad 223. In use, when the sliding frame 22 slides to its lowest position, the buffer pad 223 approaches and abuts against the top of the support plate 211, thus preventing the sliding frame 22 from continuing to slide downwards.

[0023] A first lifting drive cylinder 23 is provided in the middle of the mounting plate 212. The first lifting drive cylinder 23 can be a motor or a pneumatic cylinder, etc. Its output end is connected to a clamping seat 24, which is also fixedly connected to the bottom of the sliding plate 221. The first lifting drive cylinder 23 can drive the sliding frame 22 to slide, thereby realizing the lifting and lowering movement of the clamping seat 24. Two transverse slide rail mounting seats are provided at the bottom of the clamping seat 24. The first clamping mechanism 25 and the second clamping mechanism 26 are arranged opposite to each other on the two transverse slide rail mounting seats, forming a clamping space between them.

[0024] The first clamping mechanism 25 includes a first transverse slide rail 251, a first slider connecting plate 252, a first drive plate 253, a first clamping plate 254, a first pressure plate 255, and a telescopic drive cylinder 256. Two first transverse slide rails 251 are respectively disposed on the left side of two transverse slide rail mounting seats. Each first transverse slide rail 251 is a linear guide rail, its track is disposed on the transverse slide rail mounting seat and extends transversely. The slider is slidably disposed on its track and fixed to the first slider connecting plate 252. The first drive plate 253 spans between the two first slider connecting plates 252 and is fixedly connected to them. A first clamping plate 254 is disposed on the side of the first drive plate 253 away from the second clamping mechanism 26. The first pressure plate 255 is fixed to the first clamping plate 254 and extends horizontally towards the second clamping mechanism 26. The bottom surface of the first pressure plate 255 is not lower than the bottom surface of the first clamping plate 254, and the height difference is less than the thickness of the fin, thereby ensuring that the first pressure plate 255 can press firmly against the top surface of the fin while the first clamping plate 254 can fit tightly against the side surface of the fin. The first clamping plate 254 has first extension portions at both its front and rear ends, thereby increasing the contact length with the side surface of the fin and improving clamping stability. A telescopic drive cylinder 256 is also provided at the bottom of the clamping seat 24, which has only two states: extension and retraction. The telescopic drive cylinder 256 is preferably a telescopic cylinder, located between two transverse slide rail mounting seats. Its output end is connected to the first drive plate 253, thereby driving the first drive plate 253 to move laterally, causing the first clamping plate 254 and the first pressure plate 255 to move closer to or further away from the second clamping mechanism 26.

[0025] The second clamping mechanism 26 includes a second transverse slide rail 261, a second slider connecting plate 262, a second drive plate 263, a second clamping plate 264, and a second pressure plate 265. Two second transverse slide rails 261 are respectively disposed on the right side of two transverse slide rail mounting seats. The second transverse slide rail 261 extends transversely, and its track length is greater than that of the first transverse slide rail 251 (i.e., the sliding stroke of the second transverse slide rail 261 is greater than that of the first transverse slide rail 251). Its slider is fixed to the second slider connecting plate 262. The second drive plate 263 spans between the two second slider connecting plates 262 and is fixedly connected to them. A second clamping plate 264 is disposed on the side of the second drive plate 263 away from the first clamping mechanism 25. The second pressure plate 265 is fixed on the second clamping plate 264 and extends horizontally towards the first clamping mechanism 25. The bottom surface of the second pressure plate 265 is on the same plane as the bottom surface of the first pressure plate 255, thereby adapting to the top surface of the fin and pressing the fin to prevent its displacement. The bottom surface of the second pressure plate 265 is not lower than the bottom surface of the second clamping plate 264, and the height difference is less than the thickness of the fin. This ensures that the second pressure plate 265 can press firmly against the top surface of the fin, while the second clamping plate 264 can fit tightly against the side surface of the fin. The second clamping plate 264 is provided with second extensions at both ends to increase the contact length with the side surface of the fin and improve clamping stability.

[0026] The clamping base 24 is also equipped with a servo drive cylinder 266 and a lead screw 267. The servo drive cylinder 266 can precisely control the rotation angle of its output end, and is preferably a servo motor. Its output end drives the lead screw 267 to rotate. The lead screw 267 is located between two transverse slide rail mounting seats. Its slider is connected to the second drive plate 263, thereby driving the second drive plate 263 to move laterally, causing the second clamping plate 264 and the second pressure plate 265 to move closer to or away from the first clamping mechanism 25.

[0027] In use, an external device drives the clamping assembly 2 to move it onto the fin rack, the first clamping plate 254 and the second clamping plate 264 approach each other, and the first pressing plate 255 and the second pressing plate 265 press against the top surface of the fin, so as to clamp and position the fin to be tube-pierced. At this time, the external device drives the clamping assembly 2, thereby driving the fin to be tube-pierced to move into the tube piercing machine, and align the first layer of insertion holes of the fin with the first batch of U-tubes in the tube feeding device. After the tube insertion operation of the first layer of insertion holes is completed, the tube feeding device continues to feed out the second batch of U-tubes, the output end of the first lifting drive cylinder 23 extends, driving the clamping seat 24 to slide down, so that the second layer of insertion holes of the fin and the second batch of U-tubes are located on the same plane. At this time, the servo drive cylinder 266 is activated to make the second clamping plate 264 move laterally. Since the telescopic drive cylinder 256 is always in a state of pressing the fin, when the second clamping plate 264 moves laterally, the first clamping plate 254 moves along with the second clamping plate 264 under the pulling force of the telescopic drive cylinder 256, thereby realizing the lateral displacement of the fin while maintaining the clamping of the fin, so that the second layer of insertion holes corresponds to the second batch of U-tubes. Then, after the second batch of U-tubes are inserted, the tube piercing operation is completed. The first batch of U-tubes and the second batch of U-tubes are arranged in a staggered manner to meet the tube piercing requirements.

[0028] Since the first lifting drive cylinder 23 has a telescopic structure, it is difficult to accurately control its driving stroke, and the U-tubes are thin-walled copper tubes. If the fin positioning is not accurate, the U-tubes are prone to deviate from the insertion holes and directly abut against the fin body, causing the U-tubes to bend and deform when pushed in, resulting in defective products. In this regard, the loading device further includes a supporting assembly 3, which is arranged on the frame and located below the clamping assembly 2, for supporting the fin to be tube-pierced.

[0029] The supporting assembly 3 includes a feeding panel 31, a lifting support plate 32 and a second lifting drive cylinder 33. The top surface of the feeding panel 31 can support the fin, the lifting support plate 32 is fixed on the bracket, the cylinder body of the second lifting drive cylinder 33 is arranged on the lifting support plate 32, and its output end extends and retracts in the vertical direction and is connected with the feeding panel 31 through a connecting flange, so as to drive the feeding panel 31 to move up and down. The bottom surface of the feeding panel 31 is provided with reinforcing ribs 311, so as to improve the structural strength of the feeding panel 31. The distribution and number of the reinforcing ribs 311 can be designed according to actual conditions. As a preferred option, there are four reinforcing ribs 311, which are arranged around the connecting flange and distributed in a shape of the Chinese character "ya".

[0030] To improve the lifting stability of the feeding panel 31, guide shafts 312 extending vertically toward the lifting support plate 32 are further arranged around its periphery. The lifting support plate 32 is provided with through holes corresponding to the guide shafts 312 one by one, and the guide shafts 312 are arranged to pass through the through holes. The lifting support plate 32 is further provided with guide cylinders 321 corresponding to the through holes one by one, and the guide shafts 312 are slidably arranged in the guide cylinders 321.

[0031] The lifting support plate 32 is also equipped with two symmetrically arranged adjustment bases 322 on both sides of the second lifting drive cylinder 33. Each adjustment base 322 is connected to an adjustment block 323 by screws. The adjustment block 323 has a long slot along its vertical edge, which can be used to adjust the height of the adjustment block 323. A buffer block 324 is provided on the top of the adjustment block 323. The buffer block 324 is made of rubber or other materials. When the feeding panel 31 is lowered to the lowest position, the feeding panel 31 abuts against the buffer block 324.

[0032] The lifting support plate 32 is also provided with a limiting seat 325, and a limiting hole extending vertically through the limiting seat 325 is provided on the limiting seat 325. The bottom of the feeding panel 31 is provided with a limiting block 313 passing through the limiting hole. The limiting block 313 has a U-shaped structure, and its two ends are connected to the feeding panel 31, thereby limiting the sliding stroke of the limiting block 313 in the limiting hole to limit the feeding panel 31. In operation, the second lifting drive cylinder 33 is activated, raising the feeding panel 31 to its highest position. The clamping assembly 2 moves the fins to be threaded and lowers them until they are in contact with the feeding panel 31, aligning the first layer of insertion holes with the U-tubes. After the insertion of the first layer of insertion holes is completed, the first lifting drive cylinder 23 releases the tension on the clamping seat 24, and the second lifting drive cylinder 33 drives the feeding panel 31 to its lowest position. At this point, the output end of the first lifting drive cylinder 23 descends with the feeding panel 31 under the weight of the fins and the clamping seat 24, aligning the second layer of insertion holes with the second batch of U-tubes on the same plane. Simultaneously, the servo drive cylinder 266 is activated, causing the second clamping plate 264 to move laterally, moving the fins laterally until the second layer of insertion holes aligns with the second batch of U-tubes. The second batch of U-tubes is then inserted, completing the threading operation. The first and second batches of U-tubes are staggered to meet the threading requirements.

[0033] The present invention discloses a dual-station feeding device for air conditioning U-tubes. Through the cooperation of a support platform, a first lifting drive cylinder, a telescopic drive cylinder, and a servo drive cylinder, the fins held by the clamping plate can move between two tube-threading stations. Only one tube-threading device is needed to realize the tube-threading operation of double-layer U-tubes, making the structure more compact and simple, and improving production efficiency.

[0034] In the description of this application, it should be understood that if terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," "fixed," or "set in," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A dual-station feeding device for air conditioning U-tubes, characterized in that: The device includes a mounting frame and a clamping assembly mounted on the mounting frame. The clamping assembly is used to clamp fins and includes a support frame, a sliding frame, a first lifting drive cylinder, and a clamping seat. The sliding frame is vertically slidably mounted on the support frame. The first lifting drive cylinder is fixed on the support frame, and its output end is provided with the clamping seat connected to the sliding frame. The bottom of the clamping seat is provided with a first clamping mechanism and a second clamping mechanism disposed opposite to each other. The first clamping mechanism includes a telescopic drive cylinder and a first clamping plate. The telescopic drive cylinder is mounted on the clamping seat and drives the first clamping plate to move closer to or away from the second clamping mechanism. The second clamping mechanism includes a servo drive cylinder, a lead screw, and a second clamping plate. The servo drive cylinder is mounted on the clamping seat and drives the lead screw to rotate. The lead screw slider is connected to the second clamping plate, thereby driving the second clamping plate to move closer to or away from the first clamping plate.

2. The dual-station feeding device for air conditioning U-tubes according to claim 1, characterized in that: The first clamping mechanism further includes a first pressure plate, which is fixed to the first clamping plate and extends horizontally toward the second clamping mechanism. The bottom surface of the first pressure plate is not lower than the bottom surface of the first clamping plate. The second clamping mechanism further includes a second pressure plate located on the same plane as the first pressure plate, which is fixed to the second clamping plate and extends horizontally toward the first clamping mechanism.

3. The dual-station feeding device for air conditioning U-tubes according to claim 2, characterized in that: The sliding frame includes a sliding plate, a lifting buffer seat, and a buffer pad. The sliding plate is slidably mounted on the support frame via a lifting slide rail. The lifting buffer seat is fixedly mounted on the top of the sliding plate. The buffer pad is mounted on the bottom surface of the lifting buffer seat and corresponds to the support frame in the lifting and sliding direction.

4. The dual-station feeding device for air conditioning U-tubes according to claim 3, characterized in that: The clamping base has two transverse slide rail mounting seats at its bottom. The first clamping mechanism also includes a first transverse slide rail, a first slider connecting plate, and a first drive plate. There are two first transverse slide rails, each disposed on one side of one of the two transverse slide rail mounting seats. The first slider connecting plate is slidably mounted on the transverse slide rail mounting seat via the first transverse slide rail. The first drive plate spans between the two first slider connecting plates. The first clamping plate is disposed on the side of the first drive plate away from the second clamping mechanism. The output end of the telescopic drive cylinder is connected to the first drive plate. The second clamping mechanism also includes a second transverse slide rail, a second slider connecting plate, and a second drive plate. There are two second transverse slide rails, each disposed on the other side of one of the two transverse slide rail mounting seats. The sliding stroke of the second transverse slide rail is greater than that of the first transverse slide rail. The second slider connecting plate is slidably mounted on the transverse slide rail mounting seat via the second transverse slide rail. The second drive plate spans between the two second slider connecting plates. The second clamping plate is disposed on the side of the second drive plate away from the first clamping mechanism. The lead screw slider of the lead screw is connected to the second drive plate.

5. The dual-station feeding device for air conditioning U-tubes according to claim 4, characterized in that: The support frame includes a support plate and a mounting plate. There are two support plates arranged laterally at intervals, forming an accommodating space between them. The sides of the support plates facing the accommodating space are provided with lifting slide rails. The sliding frame is arranged between the two support plates. There are two sliding plates, each connected to one of the two lifting slide rails. The mounting plate spans between the two support plates. The first lifting drive cylinder is arranged on the mounting plate.

6. The dual-station feeding device for air conditioning U-tubes according to claim 5, characterized in that: The mounting plate has horizontal fixing holes on both sides at the bottom. Screws pass through the support plate and are threaded to the mounting plate. The mounting plate has mounting bosses on both sides at the top that protrude towards the support plate. The mounting bosses abut against the top surface of the support plate. Screws pass vertically through the mounting bosses and are fixed to the support plate.

7. The dual-station feeding device for air conditioning U-tubes according to claim 1, characterized in that: It also includes a support assembly, which corresponds to the clamping assembly and includes a feeding panel, a lifting support plate, and a second lifting drive cylinder. The feeding panel is used to support the fins clamped by the clamping assembly. The cylinder body of the second lifting drive cylinder is disposed on the lifting support plate, and its output end is connected to the feeding panel through a connecting flange, thereby driving the feeding panel to move up and down.

8. The dual-station feeding device for air conditioning U-tubes according to claim 7, characterized in that: The bottom surface of the feeding panel is provided with reinforcing ribs. There are four reinforcing ribs, which are arranged around the connecting flange and distributed in an "A" shape.

9. The dual-station feeding device for air conditioning U-tubes according to claim 7, characterized in that: The feeding panel is also provided with guide shafts and limiting blocks. There are multiple guide shafts arranged circumferentially. The limiting blocks have a U-shaped structure and their two ends are connected to the feeding panel. The lifting support plate is also provided with guide cylinders and limiting seats. The guide cylinders are slidably connected to the guide shafts. The lifting support plate is also provided with through holes corresponding to the guide cylinders. The guide shafts are slidably inserted into the through holes. The limiting seats have limiting holes, and the middle part of the limiting blocks is inserted into the limiting holes.

10. A dual-station feeding device for air conditioning U-tubes according to any one of claims 7-9, characterized in that: The lifting support plate is also provided with two symmetrically arranged adjustment bases on both sides of the second lifting drive cylinder. Each adjustment base is connected to an adjustment block by screws. The adjustment block has a long slot extending vertically. There are two adjustment blocks, each connected to the adjustment base by a screw passing through the long slot. A buffer block is provided on the top of the adjustment block, and the buffer block corresponds to the feeding panel.

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