A u-bending positioning device of a u-bending integrated machine and a working method thereof

Abstract

The application discloses a U-bending positioning device of a U-bending integrated machine and a working method thereof, and the device comprises a pushing tube assembly, a core pulling assembly, a bending assembly and an upper material withdrawing assembly, wherein the bending assembly is connected to the pushing tube assembly, the core pulling assembly is connected to the pushing tube assembly, and the upper material withdrawing assembly is connected to the pushing tube assembly; the pushing tube assembly comprises a primary moving structure and a plurality of position fine adjustment structures, and the primary moving structure is connected to the plurality of position fine adjustment structures. The device can solve the problem that the traditional small U-bending machine is designed in multiple channels, the feeding position and the limit position are adjusted complicatedly, and frequent stop and debugging are required to ensure that the size meets the requirements.

Description

Technical Field

[0001] This invention relates to the field of bending sleeve integrated machine technology, and in particular to a U-shaped positioning device for bending sleeve integrated machine and its working method. Background Technology

[0002] Integrated U-bend and sleeve units are used in the refrigeration industry, primarily connecting copper pipes between two refrigeration units, especially small U-bends. Small U-shaped sleeves consist of two welded rings fitted onto a small U-bend, facilitating the melting of the rings during welding to seal the U-tube and prevent media leakage. These small U-shaped sleeves are widely used in the refrigeration industry, thus requiring the design of advanced small U-bend and small U-shaped sleeve units.

[0003] Traditional small U-bending machines employ an 8-channel feeding system, capable of simultaneously processing 8 short copper tubes and bending them into small U-shapes using bending dies. Although the bending principle and feeding method are the same for each channel, the feeding position and limit settings for each channel differ, requiring fine-tuning based on the resulting U-shape. This makes the debugging process quite cumbersome. Each copper tube requires individual adjustment of its limit position; if the dimensions of a particular U-shape are found to be incorrect during production, the machine must be stopped for adjustments.

[0004] Therefore, it is necessary to design a new device to solve the problem that the multi-channel design of traditional small U-bend machines leads to cumbersome adjustments to the feeding position and limit, requiring frequent shutdowns for debugging to ensure that the dimensions meet the requirements. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a U-shaped positioning device for a bending sleeve integrated machine and its working method.

[0006] To solve the above-mentioned technical problems, the objective of this invention is achieved through the following technical solution: providing a U-shaped positioning device for a bending and sleeve integrated machine, comprising: a tube pusher assembly, a core puller assembly, a bending assembly, and an upper unloading assembly, wherein the bending assembly is connected to the tube pusher assembly, the core puller assembly is connected to the tube pusher assembly, and the upper unloading assembly is connected to the tube pusher assembly; the tube pusher assembly includes a primary moving structure and several position fine-tuning structures, wherein the primary moving structure is connected to the several position fine-tuning structures.

[0007] The further technical solution is as follows: the position fine-tuning structure includes a pusher plate, several secondary push rods, several intermediate sleeves, several conduits, and several connectors. The pusher plate is connected to the primary moving structure. The pusher plate is provided with several mounting slots. The connectors are installed in the mounting slots. The connectors are connected to the intermediate sleeves. The secondary push rods are connected to the intermediate sleeves. One end of the secondary push rod passes through the conduit.

[0008] The further technical solution is as follows: the primary moving structure includes a first power source, a second power source, an intermediate plate, a connecting plate, a slide rail mounting plate, a slide rail, and a first slider. A receiving mounting plate is connected below the position fine-tuning structure. The first power source is connected to the second power source, the second power source is connected to the connecting plate, and the connecting plate is connected to the pusher plate. The first power source is connected to the intermediate plate, the slide rail is mounted on the slide rail mounting plate, the slider is located below the receiving mounting plate, and the first slider is slidably connected to the slide rail.

[0009] The further technical solution is as follows: the core-pulling assembly includes several core rods, a limiting rod, a push-material detection and adjustment rod, and a push-material detection locking sleeve; one end of the secondary push rod passes through the guide tube and abuts against the product, the other end of the product abuts against the core rod, the core rod is inserted into the limiting rod, one end of the core rod passes through the push-material detection and adjustment rod, the push-material detection and adjustment rod is provided with a stepped groove, and the push-material detection locking sleeve is connected to the outer periphery of the limiting rod.

[0010] A further technical solution is that the bending assembly is installed above the receiving mounting plate.

[0011] The further technical solution is as follows: the bending assembly includes a third power source, a reducer, a first bending bearing seat, a left swing arm, several bending dies, several bending die seats, several clamping dies, a right swing arm, a clamping die cylinder, and a second bending bearing seat; the third power source is connected to the reducer, one end of the reducer passes through the first bending bearing seat and is connected to the left swing arm, the left swing arm is connected to the right swing arm, the clamping die cylinder is connected to the bending die seats, the clamping die is placed between two adjacent bending die seats, the bending die is located above the clamping die, the clamping die and the bending die are respectively provided with arc-shaped grooves, the arc-shaped grooves on the clamping die and the arc-shaped grooves on the bending die form a through groove for the product to pass through; the right swing arm is connected to the second bending bearing seat.

[0012] The further technical solution is as follows: the bending assembly includes a rotation sensing plate, which is connected to the second bending bearing seat; the bending assembly also includes a bearing bushing, a bearing retaining ring, an inner bearing retaining ring, a ball bearing, and a hydraulic rotary joint, which is inserted into the second bending bearing seat, the ball bearing is connected to the second bending bearing seat, and a bearing retaining ring and an inner bearing retaining ring are placed between the ball bearing and the second bending bearing seat.

[0013] The further technical solution is as follows: the upper ejector assembly includes an ejector mounting plate, a guide rail mounting plate, a guide rail, a cylinder mounting plate, a slider mounting plate, a second slider, an ejector connector, ejector rods, and a fourth power source. The fourth power source is connected to one side of the guide rail mounting plate through the cylinder mounting plate, and the guide rail is mounted on the guide rail mounting plate. The second slider is connected below the slider mounting plate and is slidably connected to the guide rail. The slider mounting plate is connected to the ejector mounting plate. A plurality of ejector rods are connected to the side of the ejector mounting plate away from the slider mounting plate, and the other end of the ejector rods is close to the product.

[0014] The further technical solution is as follows: the upper unloading assembly also includes a slide rail adjustment plate, the slide rail adjustment plate includes a horizontal plate and a vertical plate, one side of the horizontal plate is connected to the vertical plate, the vertical plate is provided with an adjustment groove, one side of the guide rail mounting plate is connected to the vertical plate by a fastener, and the fastener is connected in the adjustment groove.

[0015] In addition, to overcome the shortcomings of the prior art, the present invention also provides a working method performed by the U-shaped positioning device of the aforementioned bending sleeve integrated machine, comprising:

[0016] The primary moving structure of the push tube assembly drives the position fine-tuning structure to move, and the position fine-tuning structure pushes the product to the designated position.

[0017] Once the product reaches the designated position, the core-pulling assembly limits the product's position.

[0018] The product after being stopped is bent using a bending assembly.

[0019] Push the bent product to the designated position or discharge port.

[0020] The beneficial effects of this invention compared to existing technologies are as follows: This invention sets up a push tube assembly, a core-pulling assembly, a bending assembly, and a feeding / unloading assembly, all connected to the push tube assembly. The push tube assembly incorporates a primary moving structure and multiple position fine-tuning structures to facilitate rapid and precise feeding adjustments. The introduction of a primary moving structure and multiple position fine-tuning structures within the push tube assembly allows for rapid adjustments through primary movement, reducing the need for frequent machine downtime for debugging. The connection design between the bending and core-pulling assemblies and the push tube assembly makes the overall operation more coordinated and consistent. The unified limit design simplifies the setting of the feeding position and improves production efficiency. This improvement ensures dimensional compliance while significantly reducing debugging time and costs.

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the main structure of a U-shaped positioning device for a bending sleeve integrated machine provided in an embodiment of the present invention;

[0024] Figure 2 This is a top view of a U-shaped positioning device for a bending sleeve integrated machine provided in an embodiment of the present invention;

[0025] Figure 3 A three-dimensional structural schematic diagram of the push tube assembly provided in an embodiment of the present invention;

[0026] Figure 4 A top view of the push tube assembly provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the front view structure of the push tube assembly provided in an embodiment of the present invention;

[0028] Figure 6 A three-dimensional structural diagram of the core-pulling assembly provided in an embodiment of the present invention;

[0029] Figure 7 A top view of the core-pulling assembly provided in an embodiment of the present invention.

[0030] Figure 8 This is a three-dimensional structural diagram of the bending assembly provided in an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the main structure of the bending assembly provided in an embodiment of the present invention;

[0032] Figure 10 This is a side view of the bending assembly provided in an embodiment of the present invention.

[0033] Figure 11 A three-dimensional structural schematic diagram of the material feeding assembly provided in an embodiment of the present invention;

[0034] Figure 12 This is a side view of the upper unloading assembly provided in an embodiment of the present invention;

[0035] Figure 13 This is a schematic diagram of the front view structure of the material feeding and unloading assembly provided in an embodiment of the present invention;

[0036] Explanation of the markings in the image:

[0037] 10. Push tube assembly; 11. Push plate; 12. Secondary push rod; 13. Intermediate sleeve; 14. Guide tube; 15. Connector; 16. First power source; 17. Second power source; 18. Intermediate plate; 19. Connecting plate; 190. Slide rail mounting plate; 191. Slide rail; 192. First slider; 193. Receiving mounting plate; 120. Core pulling assembly; 21. Core rod; 22. Limiting rod; 23. Push detection adjusting rod; 24. Push detection locking sleeve; 25. Speed ​​regulating valve; 26. Injector connecting rod; 27. Guide tube assembly; 28. Nut; 29. ​​Core pulling block; 290. Injector fixing screw; 30. Bending assembly; 31. Third power source; 32. Reducer 33. First bending bearing seat; 34. Left swing arm; 35. Bending die; 36. Bending die seat; 37. Clamping die; 38. Right swing arm; 39. Clamping die cylinder; 390. Second bending bearing seat; 391. Rotation induction plate; 392. Bearing bushing; 393. Bearing retaining ring; 394. Inner bearing retaining ring; 395. Ball bearing; 396. Hydraulic rotary joint; 40. Upper ejector assembly; 41. Ejector mounting plate; 42. Guide rail mounting plate; 43. Guide rail; 44. Cylinder mounting plate; 45. Slider mounting plate; 46. Second slider; 47. Ejector joint; 48. Ejector rod; 49. Fourth power source; 490. Slide rail adjustment plate; 491. Adjustment groove; 50. Copper pipe. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0040] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0041] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0042] Integrated bending and sleeve machines are used in the refrigeration industry to connect copper pipes 50, especially small U-shaped bends. The small U-shaped sleeve, by fitting two welded rings onto the small U-shaped bend, facilitates welding and prevents media leakage. Traditional small U-shaped bending machines use an 8-channel feeding system to simultaneously process 8 short copper pipes 50 and bend them into small U-shapes. The feeding position and limit settings of each channel are different, requiring fine-tuning according to the small U-shape, making the debugging process cumbersome. If the small U-shape is found to be incorrect, the machine must be stopped for adjustment, affecting production efficiency.

[0043] To address this issue, this invention provides a U-shaped positioning device for an integrated bending and sleeve bending machine, which solves the problem that the multi-channel design of traditional small U-bending machines leads to cumbersome adjustments to the feeding position and limit, requiring frequent machine stops for debugging to ensure that the dimensions meet the requirements.

[0044] Specifically, a U-shaped positioning device for an integrated bending and unbending machine mainly includes a tube pusher assembly 10, a core-pulling assembly 120, a bending assembly 30, and a material ejector assembly 40. The tube pusher assembly 10 includes a primary moving structure and multiple position fine-tuning structures to achieve precise positioning. The bending assembly 30 and the core-pulling assembly 120 are responsible for the bending and limiting operations of the product, respectively, ensuring processing accuracy. The material ejector assembly 40 is used for unloading the product and includes multiple connectors and a power source. The overall design optimizes the efficiency and accuracy of U-shaped positioning.

[0045] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0046] Please see Figure 1 and Figure 2 The aforementioned U-shaped positioning device for a bending and sleeve integrated machine includes: a tube pusher assembly 10, a core puller assembly 120, a bending assembly 30, and an upper unloading assembly 40. The bending assembly 30 is connected to the tube pusher assembly 10, the core puller assembly 120 is connected to the tube pusher assembly 10, and the upper unloading assembly 40 is connected to the tube pusher assembly 10. The tube pusher assembly 10 includes a primary moving structure and several position fine-tuning structures, and the primary moving structure is connected to the several position fine-tuning structures.

[0047] Specifically, after the pusher assembly 10 pushes the copper tube 50 to the designated position (note that this involves multiple products, and the required pushing distance for each product can be achieved by adjusting the position fine-tuning structure), when the copper tube 50 is pushed forward, the core-pulling assembly 120 ensures that the product stops in the correct position to guarantee positioning accuracy. After the copper tube 50 is in place, the bending assembly 30 starts working after receiving a signal, tightens the copper tube 50, and swings and rotates to achieve the bending and forming of the copper tube 50. After the copper tube 50 is formed into a small U, the upper unloading assembly 40 pushes the product out of the mold, thereby completing the entire U-bending process.

[0048] The fine-tuning mechanism enables precise positioning of the copper tube 50, ensuring the bending effect meets design requirements. The coordinated operation of multiple components makes the entire processing fast and efficient, reducing waiting time. Automatic linkage between components reduces manual intervention and improves the automation level of the production line. Adjusting the length of the pusher rod allows for adaptation to different needs, meeting diverse production requirements. Simple operation, easy debugging and maintenance make the production process smoother and reduce the possibility of errors.

[0049] In summary, by improving the production process of bending the small U-shaped tubes and unifying the adjustment methods of the core-pulling and tube-pushing assemblies 10 for each channel, the positions of the eight copper tubes 50 are consistent. This change significantly reduces the complexity of debugging, improves work efficiency, and enhances product consistency. Such optimization not only simplifies the operation process but also brings good economic benefits. This U-shaped positioning device, through precise mechanical design and automated control, achieves efficient processing of copper tubes 50, improving production efficiency and product quality.

[0050] In one embodiment, please refer to Figure 3 and Figure 5 The aforementioned position fine-tuning structure includes a pusher plate 11, several secondary push rods 12, several intermediate sleeves 13, several conduits 14, and several connectors 15. The pusher plate 11 is connected to the primary moving structure. The pusher plate 11 is provided with several mounting slots. The connectors 15 are installed in the mounting slots and are connected to the intermediate sleeves 13. The secondary push rods 12 are connected to the intermediate sleeves 13, and one end of the secondary push rods 12 passes through the conduits 14.

[0051] In one embodiment, please refer to Figure 3 and Figure 5The aforementioned primary moving structure includes a first power source 16, a second power source 17, an intermediate plate 18, a connecting plate 19, a slide rail mounting plate 190, a slide rail 191, and a first slider 192. A receiving mounting plate 193 is connected below the position fine-tuning structure. The first power source 16 is connected to the second power source 17, the second power source 17 is connected to the connecting plate 19, and the connecting plate 19 is connected to the pusher plate 11. The first power source 16 is connected to the intermediate plate 18. The slide rail 191 is mounted on the slide rail mounting plate 190, the slider is located below the receiving mounting plate 193, and the first slider 192 is slidably connected to the slide rail 191.

[0052] In this embodiment, the intermediate plate 18 is pushed by the coordinated action of the first power source 16 and the second power source 17, thus forming a preliminary force transmission.

[0053] The second power source 17 acts on the pusher plate 11, which in turn pushes the connector 15. During this process, the connector 15 is connected to the conduit 14 through a copper sleeve to achieve power transmission.

[0054] Powered by the conduit 14, the secondary push rod 12 pushes the copper tube 50 forward, ensuring that the copper tube 50 reaches the predetermined position.

[0055] Since the eight copper tubes 50 are pushed at different positions, the pusher assembly 10 needs to be fine-tuned. Specifically, the relative positions of the pusher plate 11 and the copper tubes 50 are adjusted to ensure that the lengths of the multiple secondary pusher rods are adapted to different specifications of the copper tubes 50, achieving the best small U-shaped effect.

[0056] Based on the changes in the small U-shaped effect, the positions of the pusher plate 11 and the copper tube 50 are repeatedly fine-tuned to achieve precise processing and consistency.

[0057] Furthermore, the slide rail 191 is mounted on the slide rail mounting plate 190, and the first slider 192 is slidably connected to the slide rail 191. The slider is located below the receiving mounting plate 193, and more precise adjustment can be achieved by sliding it.

[0058] Through precise cylinder control and position fine-tuning mechanism, the copper tube 50 can be accurately pushed to the designated position, thereby improving processing accuracy.

[0059] Since the advancement position of each copper tube 50 can be adjusted individually, the system has good adaptability and can cope with copper tubes 50 of different specifications and requirements.

[0060] Repeated fine-tuning and optimization can reduce errors in the production process, improve overall work efficiency, and make the production line run more smoothly.

[0061] The positional fine-tuning structure ensures consistent quality for each copper tube after processing, reduces scrap rates due to positional errors, and improves product quality.

[0062] Operators can quickly adjust to different production needs, reducing production downtime caused by product changes.

[0063] The standardized adjustment mechanism simplifies the debugging process, enabling operators to quickly get started and reducing training and debugging time. Moreover, only one adjustment is needed to achieve long-term use: adjust the first power source 16 and the second power source 17 so that each secondary push rod 12 can no longer push the copper tube 50.

[0064] Through the steps and benefits described above, the positional fine-tuning structure significantly improves the automation level and processing accuracy of the production line, laying the foundation for improving overall production efficiency and product quality.

[0065] In one embodiment, please refer to Figure 6 and Figure 7 The aforementioned core-pulling assembly 120 includes several core rods 21, a limiting rod 22, a push-material detection adjustment rod 23, and a push-material detection locking sleeve 24; one end of the secondary push rod 12 passes through the guide tube 14 and abuts against the product, and the other end of the product abuts against the core rod 21; the core rod 21 is inserted into the limiting rod 22; one end of the core rod 21 passes through the push-material detection adjustment rod 23; the push-material detection adjustment rod 23 is provided with a stepped groove; and the push-material detection locking sleeve 24 is connected to the outer periphery of the limiting rod 22.

[0066] In this embodiment, the core-pulling assembly 120 consists of multiple core components, including a core rod 21, a limiting rod 22, a pusher detection adjustment rod 23, and a pusher detection locking sleeve 24. One end of the secondary pusher 12 contacts the product, and the other end of the product is connected to the core rod 21. The core rod 21 is connected to the limiting rod 22 via the pusher detection adjustment rod 23. The pusher detection adjustment rod 23 has a stepped groove inside, which allows the limiting rod 22 to gradually approach the stepped groove as the product moves forward against the core rod 21, thus limiting the position of the limiting rod 22. When the tube-pushing mechanism pushes the copper tube 50 forward, the pusher rod, through the action of the pusher detection adjustment rod 23, moves the pusher detection locking sleeve 24 to a fixed position. During the advancement of the copper tube 50, the limiting rod 22 touches the stepped groove, and the tube-pushing assembly 10 stops, ensuring the stability of the copper tube 50.

[0067] In addition, the core rod 21 prevents the copper tube 50 from wrinkling and deforming when the bending assembly 30 rotates, ensuring product quality.

[0068] By adding a stepped groove to the limiting step, the precise positioning of the limiting rod 22 is ensured, allowing for accurate adjustment at once and repeated use multiple times.

[0069] Specifically, when the tube pushing mechanism pushes the copper tube 50 forward, the push rod on the core pulling assembly 120 will be pushed to a fixed position by the push detection adjustment rod 23 and the push detection locking sleeve 24. At this time, the tube pushing mechanism will push the copper tube 50 out. The tube pushing mechanism will stop after the copper tube 50 touches the limit rod 22. One function is to limit the copper tube 50, and the other is to prevent the copper tube 50 from wrinkling and deforming when the core rod 21 rotates in the bending assembly 30.

[0070] In the prior art, the push detection adjustment rod 23 on the core-pulling assembly 120 determines the position and size of the limit rod 22 according to the position of the push tube mechanism. It is adjustable, and the length of each limit rod 22 varies depending on the position of the eight copper tubes 50.

[0071] In this embodiment, a limiting step is added to the push detection adjustment rod 23 on the core pulling assembly 120, which can accurately limit the limiting rod 22. The limiting rod 22 has an accurate limiting size, so it can be positioned once and used repeatedly.

[0072] Therefore, the design of the limiting step enables the limiting rod 22 to achieve precise positioning, ensuring consistency in each processing step. The adjustability of the pusher detection adjustment rod 23 allows for flexible adjustment of the position of the limiting rod 22 according to different copper tube 50 specifications, adapting to various product requirements. The design of the core rod 21 effectively prevents the copper tube 50 from wrinkling and deforming during processing, improving the quality of the final product. After one positioning, the component can be reused multiple times, reducing adjustment time and improving work efficiency. The limiting function of the copper tube 50 ensures the stability of the tube pushing mechanism, reducing operational risks and failure rates. The optimized design of the entire core-pulling assembly 120 improves the automation level of the production line, reduces manual intervention, and thus improves overall production efficiency.

[0073] In one embodiment, please refer to Figure 6 and Figure 7 The aforementioned core-pulling assembly 120 further includes a speed control valve 25, a fuel injector connecting rod 26, a guide tube assembly 27, a nut 28, a core-pulling block 29, and a fuel injector fixing screw 290. The other end of the core rod 21 is connected to the core-pulling block 29, one section of which is connected to the guide tube assembly 27, and one section of which is connected to the speed control valve 25. The fuel injector fixing screw 290 connects the core rod 21 and the guide tube assembly 27. The fuel injector connecting rod 26 is connected to both the speed control valve 25 and the guide tube assembly 27, and the nut 28 is fixed to the guide tube assembly 27.

[0074] Specifically, the other end of the guide tube assembly 27 is connected to the speed control valve 25 to regulate the oil flow rate; the injector fixing screw 290 is used to connect the core rod 21 and the guide tube assembly 27 to ensure that the injector works stably during the processing.

[0075] The amount of oil injected is adjusted by the speed control valve 25 to ensure uniform distribution of oil mist during the core extraction process and effectively reduce friction.

[0076] During the core-pulling process, the core-pulling block 29 and the guide tube assembly 27 work together to ensure a smooth core-pulling process and reduce resistance.

[0077] The application of the speed control valve 25 enables adjustable oil injection volume, optimizes lubrication, and improves machining accuracy. The injector fixing screw 290 ensures the stable position of the injector, reducing vibration and displacement during operation. The design of the guide tube assembly 27 ensures uniform oil flow distribution, reduces wear, and extends the service life of components. The connection design between components simplifies the operation process, making adjustment and maintenance more convenient. The optimized oil injection system effectively reduces friction during core pulling, reducing energy consumption and wear, and improving work efficiency. This core pulling assembly 120 can adapt to different machining needs, exhibiting high flexibility and versatility.

[0078] In one embodiment, please refer to Figure 1 and Figure 2 The aforementioned bending assembly 30 is mounted above the receiving mounting plate 193.

[0079] In one embodiment, please refer to Figures 8 to 10 The aforementioned bending assembly 30 includes a third power source 31, a reducer 32, a first bending bearing seat 33, a left swing arm 34, several bending dies 35, several bending die seats 36, several clamping dies 37, a right swing arm 38, a clamping cylinder 39, and a second bending bearing seat 390. The third power source 31 is connected to the reducer 32. One end of the reducer 32 passes through the first bending bearing seat 33 and is connected to the left swing arm 34. The left swing arm 34 is connected to the right swing arm 38. The clamping cylinder 39 is connected to the bending die seats 36. A clamping die 37 is placed between two adjacent bending die seats 36. The bending die 35 is located above the clamping die 37. The clamping die 37 and the bending die 35 are respectively provided with arc-shaped grooves. The arc-shaped grooves on the clamping die 37 and the arc-shaped grooves on the bending die 35 enclose a through groove for the product to pass through. The right swing arm 38 is connected to the second bending bearing seat 390.

[0080] In addition, a clamping mold 37 is also placed between the bending mold base 36 closest to the left swing arm 34 and the left swing arm 34, and a clamping mold 37 is also placed between the bending mold base 36 closest to the right swing arm 38 and the right swing arm 38.

[0081] In one embodiment, please refer to Figures 8 to 10The aforementioned bending assembly 30 includes a rotation sensing plate 391 connected to a second bending bearing housing 390. The bending assembly 30 also includes a bearing bushing 392, a bearing retaining ring 393, an inner bearing retaining ring 394, a ball bearing 395, and a hydraulic rotary joint 396. The hydraulic rotary joint 396 is inserted into the second bending bearing housing 390. The ball bearing 395 is connected to the second bending bearing housing 390. The bearing retaining ring 393 and the inner bearing retaining ring 394 are placed between the ball bearing 395 and the second bending bearing housing 390. The bearing bushing 392 is located on the ball bearing 395.

[0082] Specifically, when the pushing mechanism pushes the copper tube 50 to the designated position, the core-pulling assembly 120 is responsible for accurately positioning and clamping the copper tube 50. Once the copper tube 50 is in place, the sensor sends a signal, instructing the clamping mold 37 to press the copper tube 50 firmly, ensuring it remains stationary. The bending assembly 30 then begins to rotate, bending the copper tube 50 into a small U-shape. This process is driven by a third power source 31, which is connected to the left swing arm 34 via a reducer 32.

[0083] Upon receiving the signal, the clamping cylinder 39 clamps the copper tube 50 using the clamping mold 37 and the bending mold 35. The right swing arm 38 and the left swing arm 34 rotate together by 186° to achieve the forming and bending of the copper tube 50.

[0084] Both the clamping mold 37 and the bending mold 35 are provided with arc-shaped grooves, which together form a through groove for the copper tube 50 to pass through smoothly.

[0085] The bending assembly 30 is equipped with a rotation sensor 391, which is mounted on the second bending bearing seat 390 to ensure position sensing and feedback during the bending process.

[0086] The component is internally equipped with ball bearings 395, bearing retaining rings 393, inner retaining rings, etc., to ensure the stability and smoothness of the bending process, and hydraulic rotary joints 396 provide the necessary fluid connection.

[0087] The positioning function of the core-pulling assembly 120 ensures the accuracy of the copper tube 50 during bending, avoiding deviations. Real-time feedback from sensors improves the level of automation, reduces manual intervention, and increases work efficiency. The combination of the hydraulic system and clamping mold 37 makes the copper tube 50 more stable during bending, ensuring forming quality. The design of multiple bending dies 35 and clamping dies 37 allows the equipment to adapt to the bending needs of copper tubes 50 of different specifications and shapes. The equipped ball bearings 395 and hydraulic rotary joints 396 ensure smooth rotation of the components, reducing wear and failure rates. During bending, the through-slot design formed by the clamping mold 37 and bending mold 35 ensures the safety of the product during processing, avoiding jamming. The cooperation between the third power source 31 and the reducer 32 makes energy conversion highly efficient, reducing overall energy consumption and improving economy.

[0088] In one embodiment, please refer to Figures 11 to 13 The aforementioned ejector assembly 40 includes an ejector mounting plate 41, a guide rail mounting plate 42, a guide rail 43, a cylinder mounting plate 44, a slider mounting plate 45, a second slider 46, an ejector connector 47, ejector rods 48, and a fourth power source 49. The fourth power source 49 is connected to one side of the guide rail mounting plate 42 via the cylinder mounting plate 44. The guide rail 43 is mounted on the guide rail mounting plate 42. The second slider 46 is connected below the slider mounting plate 45 and is slidably connected to the guide rail 43. The slider mounting plate 45 is connected to the ejector mounting plate 41. Several ejector rods 48 are connected to the side of the ejector mounting plate 41 away from the slider mounting plate 45, and the other end of the ejector rods 48 is close to the product.

[0089] In one embodiment, please refer to Figures 11 to 13 The aforementioned upper unloading assembly 40 also includes a slide rail adjustment plate 490, which includes a horizontal plate and a vertical plate. One side of the horizontal plate is connected to the vertical plate, and the vertical plate is provided with an adjustment groove 491. One side of the guide rail mounting plate 42 is connected to the vertical plate by fasteners, and the fasteners are connected in the adjustment groove 491.

[0090] Specifically, after the copper tube 50 is bent into a small U-shape, the fourth power source 49 is activated, pushing the ejector joint 47 forward. The movement of the four power sources drives the slider mounting plate 45 and the pusher mounting plate forward together, which in turn pushes the pusher rod. The U-shaped copper tube 50 is pushed from the bending die to the material tray, completing one product transfer. This series of actions constitutes a complete work cycle, preparing for the next bending and ejection of the copper tube 50.

[0091] The slider is slidably connected to the guide rail 43 via the second slider 46, ensuring smooth movement of the slider mounting plate 45. The ejector mounting plate 41 is connected to the slider mounting plate 45, and one end of the ejector rod 48 is close to the bent product to ensure effective pushing. The design of the slide rail adjustment plate 490 allows for fine-tuning of the installation position of the guide rail 43 to adapt to different production needs.

[0092] The cylinder-driven mechanism increases the ejection speed, ensuring the copper tube 50 is quickly transferred from the bending die, reducing downtime. The ejection rod 48 is designed to prevent product deviation during transfer, improving product consistency and quality. The guide rail 43 allows the slider to move smoothly, reducing friction and wear and improving system stability. The slide rail adjustment plate 490 allows the operator to fine-tune it as needed to accommodate different specifications of copper tube 50. The modular design of the components makes system maintenance and replacement more convenient, reducing maintenance costs. The automated pushing mechanism reduces reliance on manual labor and improves production efficiency. The ejection assembly design ensures safety during operation, reducing potential accident risks.

[0093] In traditional small U-bending processes, the following problems exist: the limiting and advancing positions of each copper tube 50 are different, requiring individual adjustments based on the shape of the small U on site. This one-tube-one-position method is not only complex to debug but also inefficient, increasing the trouble in the production process. The device in this embodiment adopts a unified limiting design for these eight copper tubes 50. Specifically, a step is added inside the pusher detection adjustment rod 23, allowing all eight copper tubes 50 to be limited at the same position simultaneously. This design simplifies and unifies the positioning of the copper tubes 50. The design of the pusher assembly 10 has also been optimized, ensuring that all copper tubes 50 operate in the same position during advancement, guaranteeing coordination and consistency in the advancement process. By unifying the limiting position, the traditional one-tube-one-position positioning method is changed, simplifying the operation process and reducing debugging time. This improvement achieves standardization of the production process; operators only need to operate according to a unified standard, greatly improving production efficiency. Since all copper tubes 50 are limited at the same position, equipment debugging becomes faster and simpler, reducing the time wasted on individual adjustments. Increased production efficiency directly leads to increased profits, not only reducing labor costs but also improving product consistency and quality, thereby enhancing market competitiveness.

[0094] Through the above improvements, the entire small U-bending process has been significantly enhanced in terms of efficiency, ease of operation, and production benefits, thus promoting the optimization of the production process.

[0095] The aforementioned U-shaped positioning device for a bending and sleeve integrated machine comprises a push tube assembly 10, a core-pulling assembly 120, a bending assembly 30, and an upper unloading assembly 40, all connected to the push tube assembly 10. The push tube assembly 10 incorporates a primary moving structure and multiple position fine-tuning structures to facilitate rapid and precise feeding adjustments. The introduction of this primary moving structure and multiple position fine-tuning structures allows for rapid adjustment through primary movement, reducing the need for frequent machine stops for debugging. The connection design between the bending assembly 30 and the core-pulling assembly 120 and the push tube assembly 10 ensures more coordinated and consistent operation. The unified limit design simplifies the setting of the feeding position and improves production efficiency. This improvement ensures dimensional compliance while significantly reducing debugging time and costs.

[0096] In one embodiment, a working method performed by the U-shaped positioning device of the aforementioned bending sleeve integrated machine is also provided, comprising:

[0097] The primary moving structure of the push tube assembly 10 drives the position fine-tuning structure to move, and the position fine-tuning structure pushes the product to the designated position.

[0098] Once the product reaches the designated position, the core-pulling assembly 120 will limit the product's movement.

[0099] The product after being stopped is bent using bending component 30.

[0100] Push the bent product to the designated position or discharge port.

[0101] It should be noted that those skilled in the art can clearly understand the specific implementation process of the working method of the U-shaped positioning device of the above-mentioned bending sleeve integrated machine. They can refer to the corresponding description in the aforementioned device embodiments. For the sake of convenience and brevity, it will not be repeated here.

[0102] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A U-shaped positioning device for an integrated bending and sleeve machine, characterized in that, include: The assembly includes a tube pusher assembly, a core puller assembly, a bending assembly, and an upper unloading assembly, wherein the bending assembly is connected to the tube pusher assembly, the core puller assembly is connected to the tube pusher assembly, and the upper unloading assembly is connected to the tube pusher assembly; the tube pusher assembly includes a primary moving structure and several position fine-tuning structures, and the primary moving structure is connected to the several position fine-tuning structures. The position fine-tuning structure includes a pusher plate, several secondary push rods, several intermediate sleeves, several conduits, and several connectors. The pusher plate is connected to the primary moving structure. The pusher plate is provided with several mounting slots. The connectors are installed in the mounting slots and are connected to the intermediate sleeves. The secondary push rods are connected to the intermediate sleeves, and one end of the secondary push rods passes through the conduits. The core-pulling assembly includes several core rods, a limiting rod, a push-material detection and adjustment rod, and a push-material detection and locking sleeve. One end of the secondary push rod passes through the guide tube and abuts against the product, while the other end of the product abuts against the core rod. The core rod is inserted into the limiting rod, and one end of the core rod passes through the push-material detection and adjustment rod. The push-material detection and adjustment rod has a stepped groove, and the push-material detection and locking sleeve is connected to the outer periphery of the limiting rod.

2. The U-shaped positioning device for a bending sleeve integrated machine according to claim 1, characterized in that, The primary moving structure includes a first power source, a second power source, an intermediate plate, a connecting plate, a slide rail mounting plate, a slide rail, and a first slider. A receiving mounting plate is connected below the position fine-tuning structure. The first power source is connected to the second power source, the second power source is connected to the connecting plate, and the connecting plate is connected to the pusher plate. The first power source is connected to the intermediate plate, the slide rail is mounted on the slide rail mounting plate, the slider is located below the receiving mounting plate, and the first slider is slidably connected to the slide rail.

3. The U-shaped positioning device for a bending sleeve integrated machine according to claim 2, characterized in that, The bending assembly is mounted above the receiving plate.

4. The U-shaped positioning device for a bending sleeve integrated machine according to claim 3, characterized in that, The bending assembly includes a third power source, a reducer, a first bending bearing seat, a left swing arm, several bending dies, several bending die seats, several clamping dies, a right swing arm, a clamping die cylinder, and a second bending bearing seat. The third power source is connected to the reducer. One end of the reducer passes through the first bending bearing seat and connects to the left swing arm. The left swing arm is connected to the right swing arm. The clamping die cylinder is connected to the bending die seats. The clamping die is placed between two adjacent bending die seats. The bending die is located above the clamping die. The clamping die and the bending die are respectively provided with arc-shaped grooves. The arc-shaped grooves on the clamping die and the arc-shaped grooves on the bending die form a through groove for the product to pass through. The right swing arm is connected to the second bending bearing seat.

5. The U-shaped positioning device for a bending sleeve integrated machine according to claim 4, characterized in that, The bending assembly includes a rotation sensing plate connected to the second bending bearing housing; the bending assembly also includes a bearing bushing, a bearing retaining ring, an inner bearing retaining ring, a ball bearing, and a hydraulic rotary joint, the hydraulic rotary joint being inserted into the second bending bearing housing, the ball bearing being connected to the second bending bearing housing, and a bearing retaining ring and an inner bearing retaining ring being placed between the ball bearing and the second bending bearing housing.

6. The U-shaped positioning device for a bending sleeve integrated machine according to claim 2, characterized in that, The material ejection assembly includes an ejection mounting plate, a guide rail mounting plate, a guide rail, a cylinder mounting plate, a slider mounting plate, a second slider, an ejection connector, ejection rods, and a fourth power source. The fourth power source is connected to one side of the guide rail mounting plate via the cylinder mounting plate, and the guide rail is mounted on the guide rail mounting plate. The second slider is connected below the slider mounting plate and is slidably connected to the guide rail. The slider mounting plate is connected to the ejection mounting plate. A plurality of ejection rods are connected to the side of the ejection mounting plate away from the slider mounting plate, and the other end of the ejection rods is close to the product.

7. The U-shaped positioning device for a bending sleeve integrated machine according to claim 6, characterized in that, The upper unloading assembly also includes a slide rail adjustment plate, which includes a horizontal plate and a vertical plate. One side of the horizontal plate is connected to the vertical plate, and the vertical plate has an adjustment groove. One side of the guide rail mounting plate is connected to the vertical plate by a fastener, which is connected in the adjustment groove.

8. A working method performed by the U-shaped positioning device of the bending sleeve integrated machine as described in any one of claims 1 to 7, characterized in that, include: The primary moving structure of the push tube assembly drives the position fine-tuning structure to move, and the position fine-tuning structure pushes the product to the designated position. Once the product reaches the designated position, the core-pulling assembly limits the product's position. The product after being stopped is bent using a bending assembly. Push the bent product to the designated position or discharge port.

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