U-shaped bending positioning device of bending and sleeving all-in-one machine and working method of U-shaped bending positioning device

Abstract

The invention discloses a bent U positioning device of a bending and sleeving all-in-one machine and a working method thereof.The device comprises a pipe pushing assembly, a core pulling assembly, a bending assembly and an upper material returning assembly, the bending assembly is connected to the pipe pushing assembly, the core pulling assembly is connected to the pipe pushing assembly, and the upper material returning assembly is connected to the bending assembly. The upper material returning assembly is connected to the pipe pushing assembly. The pipe pushing assembly comprises a first-stage moving structure and a plurality of position fine adjustment structures, and the first-stage moving structure is connected with the position fine adjustment structures. By means of the device, the problems that due to the multi-channel design of a traditional small U-shaped bending machine, the feeding position and limiting adjustment is tedious, and frequent shutdown debugging is needed to ensure that the size meets the requirement can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of bending and sleeve integrated machines, and in particular to a bending U positioning device of the bending and sleeve integrated machine and a working method thereof. Background Art

[0002] The bending sleeve integrated machine is used in the refrigeration industry, mainly connecting the copper tubes of two devices, especially the small U elbow. The small U sleeve ring is to put two welding rings on the small U elbow, so that the rings can be melted and the U tube can be sealed during welding to prevent medium leakage. This small U sleeve ring is widely used in the refrigeration industry, so it is necessary to design advanced small U bending machines and small U sleeve ring machines.

[0003] The traditional small U bending machine uses an 8-channel pusher system, which can process 8 short copper tubes at the same time and bend them into a small U shape using a tube bending mold. Although the bending principle and feeding method of each channel are the same, the feeding position and limit setting of each channel are different, and fine-tuning is required according to the small U shape, which makes the debugging process quite cumbersome. The limit position of each copper tube needs to be adjusted separately. If it is found that the size of a small U does not meet the requirements during production, the machine must be stopped for debugging.

[0004] Therefore, it is necessary to design a new device to solve the problem that the multi-channel design of the traditional small U-bending machine leads to cumbersome adjustment of the feeding position and limit, and requires frequent shutdown and debugging to ensure that the size meets the requirements. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a U-bend positioning device of a bending sleeve integrated machine and a working method thereof.

[0006] To solve the above technical problems, the objective of the present invention is achieved through the following technical solutions: providing a U-bend positioning device for a bending sleeve integrated machine, comprising: a push tube assembly, a core pulling assembly, a bending assembly and an upper material return assembly, wherein the bending assembly is connected to the push tube assembly, the core pulling assembly is connected to the push tube assembly, and the upper material return assembly is connected to the push tube assembly; the push tube assembly comprises a primary moving structure and a plurality of position fine-tuning structures, and the primary moving structure is connected to the plurality of position fine-tuning structures.

[0007] Its further technical solution is: the position fine-tuning structure includes a push plate, a plurality of secondary push rods, a plurality of intermediate sleeves, a plurality of conduits and a plurality of joints, the push plate is connected to the primary movable structure, the push plate is provided with a plurality of mounting grooves, the joints are installed in the mounting grooves, the joints are connected to the intermediate sleeve, the secondary push rod is connected to the intermediate sleeve, and one end of the secondary push rod passes through the conduit.

[0008] Its further technical solution is: the first-level 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 material 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 pushing 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 material receiving mounting plate, and the first slider is slidably connected to the slide rail.

[0009] Its further technical solution is: the core pulling assembly includes a plurality of core rods, a limiting rod, a push material detection adjustment rod and a push material detection locking sleeve; the secondary push rod passes through one end of the guide tube to abut the product, and the other end of the product abuts the core rod, the limiting rod is inserted into the core rod, one end of the core rod passes through the push material detection adjustment rod, the push material detection 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 as follows: the bending assembly is installed above the material receiving installation plate.

[0011] Its further technical solution is: the bending assembly includes a third power source, a reducer, a first bending bearing seat, a left swing arm, a plurality of bending molds, a plurality of bending mold seats, a plurality of clamping molds, a right swing arm, a clamping mold 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 mold cylinder is connected to the bending mold seat, the clamping mold is placed between two adjacent bending mold seats, the bending mold is located above the clamping mold, the clamping mold and the bending mold are respectively provided with arc grooves, the arc groove on the clamping mold and the arc groove on the bending mold enclose a through groove for the product to pass through; the right swing arm is connected to the second bending bearing seat.

[0012] Its further technical solution is: the bending component includes a rotational sensing plate, which is connected to the second bending bearing seat; the bending component also includes a bearing bushing, a bearing retaining ring, a bearing inner retaining ring, a ball bearing and a hydraulic rotary joint, the hydraulic rotary joint is inserted in the second bending bearing seat, the ball bearing is connected in the second bending bearing seat, and a bearing retaining ring and a bearing inner retaining ring are placed between the ball bearing and the second bending bearing seat.

[0013] Its further technical solution is: the upper material return assembly includes a material return mounting plate, a guide rail mounting plate, a guide rail, a cylinder mounting plate, a slider mounting plate, a second slider, a material return joint, a material return rod 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 installed on the guide rail mounting plate; the second slider is connected to the bottom of the slider mounting plate, and the second slider is slidably connected to the guide rail; the slider mounting plate is connected to the material return mounting plate; a plurality of material return rods are connected to the side of the material return mounting plate away from the slider mounting plate, and the other end of the material return rod is close to the product.

[0014] Its further technical solution is: the upper material return assembly also includes a slide rail adjustment plate, the slide rail adjustment plate includes a transverse plate and a vertical plate, one side of the transverse plate is connected to the vertical plate, an adjustment groove is provided in the vertical plate, one side of the guide rail mounting plate is connected to the vertical plate through a fastener, and the fastener is connected in the adjustment groove.

[0015] In addition, in order to overcome the defects of the prior art, the present invention also provides a working method performed by the above-mentioned U-bend positioning device of the bending sleeve integrated machine, comprising:

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

[0017] When the product reaches the specified position, the core pulling component limits the product;

[0018] The products after limiting are bent by using bending components;

[0019] Push the bent product to the designated location or outlet.

[0020] Compared with the prior art, the present invention has the following beneficial effects: the present invention sets a push tube assembly, a core pulling assembly, a bending assembly and an upper material withdrawal assembly, and all the assemblies are connected to the push tube assembly; a primary moving structure and multiple position fine-tuning structures are provided in the push tube assembly to facilitate fast and accurate feeding adjustment; a primary moving structure and multiple position fine-tuning structures are introduced in the push tube assembly; rapid adjustment is performed through primary movement to reduce the need for frequent shutdown and debugging; the connection design of the bending assembly and the core pulling assembly with 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 that the size meets the requirements, while greatly reducing the debugging time and cost.

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

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

[0024] Figure 2 A schematic diagram of a top view of a bending U positioning device of a bending sleeve integrated machine provided in an embodiment of the present invention;

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

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

[0027] Figure 5 A schematic diagram of the main structure of a push tube assembly provided in an embodiment of the present invention;

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

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

[0030] Figure 8 A schematic diagram of the three-dimensional structure of a bending assembly provided in an embodiment of the present invention;

[0031] Fig. 9 A schematic diagram of the main structure of a bending assembly provided in an embodiment of the present invention;

[0032] Fig.10 A schematic side view of the structure of a bending assembly provided in an embodiment of the present invention;

[0033] Fig.11 A schematic diagram of the three-dimensional structure of an upper material stripping assembly provided in an embodiment of the present invention;

[0034] Fig.12 A schematic side view of the upper material stripping assembly provided in an embodiment of the present invention;

[0035] Fig.13 A schematic diagram of the main structure of the upper material stripping assembly provided in an embodiment of the present invention;

[0036] Description of the symbols in the figure:

[0037] 10. Push tube assembly; 11. Push plate; 12. Secondary push rod; 13. Intermediate sleeve; 14. Conduit; 15. Joint; 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. Material receiving mounting plate; 120. Core pulling assembly; 21. Core rod; 22. Limit rod; 23. Push material detection adjustment rod; 24. Push material detection locking sleeve; 25. Speed ​​regulating valve; 26. Injector nozzle connecting rod; 27. Guide tube assembly; 28. Nut; 29. ​​Core pulling block; 290. Injector nozzle 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. Rotating induction plate;392. Bearing bushing;393. Bearing retaining ring;394. Bearing inner retaining ring;395. Ball bearing;396. Hydraulic rotary joint;40. Upper material withdrawal assembly;41. Material withdrawal mounting plate;42. Guide rail mounting plate;43. Guide rail;44. Cylinder mounting plate;45. Slider mounting plate;46. Second slider;47. Material withdrawal joint;48. Material withdrawal rod;49. Fourth power source;490. Slide rail adjustment plate;491. Adjustment slot;50. Copper tube. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

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

[0041] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0042] The bending sleeve integrated machine is used in the refrigeration industry to connect copper tubes 50, especially small U elbows. The small U sleeve ring is put on the small U elbow with two welding rings to facilitate welding and prevent medium leakage. The traditional small U bending machine adopts an 8-channel pushing system to process 8 short copper tubes 50 at the same time and bend them into a small U shape. The feeding position and limit setting of each channel are different, and fine-tuning is required according to the small U shape. The debugging process is cumbersome. If it is found that the small U size does not meet the requirements, it is necessary to stop the machine for adjustment, which affects production efficiency.

[0043] To this end, an embodiment of the present invention provides a U-bend positioning device for a bending sleeve integrated machine to solve the problem that the multi-channel design of a traditional small U-bend machine leads to cumbersome feeding position and limit adjustments, and requires frequent shutdowns for debugging to ensure that the dimensions meet the requirements.

[0044] Specifically, a U-bend positioning device of a bending sleeve integrated machine mainly includes a tube pusher assembly 10, a core pulling assembly 120, a bending assembly 30 and an upper material return 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 respectively responsible for the bending and limiting operations of the product to ensure processing accuracy. The upper material return assembly 40 is used for product return and includes multiple connectors and a power source. The overall design optimizes the efficiency and accuracy of the U-bend positioning.

[0045] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0046] See also Figure 1 and Figure 2 The above-mentioned U-bend positioning device of a bending sleeve integrated machine includes: a tube pushing assembly 10, a core pulling assembly 120, a bending assembly 30 and an upper material stripping assembly 40, wherein the bending assembly 30 is connected to the tube pushing assembly 10, the core pulling assembly 120 is connected to the tube pushing assembly 10, and the upper material stripping assembly 40 is connected to the tube pushing assembly 10; the tube pushing assembly 10 includes a primary moving structure and a plurality of position fine-tuning structures, and the primary moving structure is connected to the plurality of position fine-tuning structures.

[0047] Specifically, after the tube pushing assembly 10 pushes the copper tube 50 to the specified position, note that there are multiple products, and the distance required to push 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 at the correct position to ensure accurate positioning; when the copper tube 50 is in place, the bending assembly 30 starts working after receiving the signal, tightens the copper tube 50, and swings and rotates to achieve the bending forming of the copper tube 50; when the copper tube 50 is completed into a small U, the upper material withdrawal assembly 40 pushes the product out of the mold, thereby completing the entire U-bending process.

[0048] Through the fine-tuning mechanism, the copper tube 50 can be precisely positioned to ensure that the bending effect meets the design requirements. The collaborative work of multiple components makes the entire processing process fast and efficient, reducing waiting time. The automatic linkage between components reduces manual intervention and improves the automation level of the production line. By adjusting the length of the push rod, it can be adapted according to different needs to meet diverse production requirements. Simple operation, easy debugging and maintenance make the production process smoother and reduce the possibility of errors.

[0049] In general, by improving the production process of the small U-bend, the adjustment method of the core pulling and tube pushing assembly 10 of each channel is unified, so that the positions of the eight copper tubes 50 are consistent. This change significantly reduces the complexity of debugging, improves work efficiency, and also enhances the consistency of the product. Such optimization not only simplifies the operation process, but also brings good economic benefits. This U-bend positioning device realizes efficient copper tube 50 processing through precise mechanical design and automated control, and improves production efficiency and product quality.

[0050] In one embodiment, see Figure 3 and Figure 5 The above-mentioned position fine-tuning structure includes a push plate 11, a plurality of secondary push rods 12, a plurality of intermediate sleeves 13, a plurality of conduits 14 and a plurality of joints 15. The push plate 11 is connected to the primary moving structure. The push plate 11 is provided with a plurality of mounting grooves. The joints 15 are installed in the mounting grooves. The joints 15 are connected to the intermediate sleeve 13. The secondary push rod 12 is connected to the intermediate sleeve 13. One end of the secondary push rod 12 passes through the conduit 14.

[0051] In one embodiment, see Figure 3 and Figure 5The above-mentioned 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 material 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 pushing plate 11; the first power source 16 is connected to the intermediate plate 18; the slide rail 191 is installed on the slide rail mounting plate 190, the slider is located below the material receiving mounting plate 193, and the first slider 192 is slidably connected to the slide rail 191.

[0052] In this embodiment, the first power source 16 and the second power source 17 cooperate to push the middle plate 18 to form a preliminary force transmission.

[0053] The second power source 17 acts on the push plate 11, and the push plate 11 pushes the joint 15. In this process, the joint 15 is connected to the conduit 14 through the copper sleeve to achieve power transmission.

[0054] Through the power of the conduit 14, the secondary push rod 12 pushes the copper tube 50 forward to ensure that the copper tube 50 reaches the predetermined position.

[0055] Since the pushing positions of the eight copper tubes 50 are different, it is necessary to fine-tune the pushing tube assembly 10. Specifically, the relative positions of the pushing plate 11 and the copper tube 50 are adjusted to ensure that the lengths of the multiple secondary pushing rods are adapted to the different specifications of the copper tubes 50 to achieve the best small U effect.

[0056] According to the change of the small U effect, the positions of the push plate 11 and the copper tube 50 are repeatedly fine-tuned to achieve precise processing and consistency.

[0057] In addition, 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 material receiving mounting plate 193, and more precise adjustment is achieved by sliding.

[0058] Through precise cylinder control and position fine-tuning mechanism, it can be ensured that the copper tube 50 is accurately pushed to the specified position, thereby improving the 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 position fine-tuning structure ensures the quality consistency of each copper tube 50 after processing, reduces the scrap rate caused by position error, and improves product quality.

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

[0063] The unified adjustment mechanism simplifies the debugging process, allowing operators to quickly get started and reducing training and debugging time. Moreover, only one adjustment is required to achieve the effect of long-term use, and the adjustment is made until the first power source 16 and the second power source 17 work so that each secondary push rod 12 can no longer push the copper tube 50.

[0064] Through the above steps and benefits, the position 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, see Figure 6 and Figure 7 The above-mentioned core pulling assembly 120 includes a plurality of core rods 21, a limiting rod 22, a push material detection adjustment rod 23 and a push material detection locking sleeve 24; the secondary push rod 12 passes through one end of the guide tube 14 to abut the product, and the other end of the product abuts the core rod 21. The limiting rod 22 is inserted into the core rod 21, and 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 is composed of a plurality of core components, including a core rod 21, a limiting rod 22, a material pushing detection adjusting rod 23 and a material pushing detection locking sleeve 24. One end of the secondary push rod 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 through the material pushing detection adjusting rod 23. The inside of the material pushing detection adjusting rod 23 is designed with a stepped groove, so that when the product moves forward against the core rod 21, the limiting rod 22 gradually approaches the stepped groove, and the position of the limiting rod 22 is limited by the stepped groove. When the pushing tube mechanism pushes the copper tube 50 forward, the pushing tube rod acts on the material pushing detection adjusting rod 23 to move the material pushing 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 pushing tube assembly 10 stops accordingly, ensuring the stability of the position of the copper tube 50.

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

[0068] By adding the step groove and the limiting step, the accurate positioning of the limiting rod 22 is ensured, allowing accurate adjustment once and repeated use.

[0069] Specifically, when the tube pushing mechanism pushes the copper tube 50 forward, the pushing rod on the core pulling assembly 120 will pass through the pushing detection adjusting rod 23; the pushing detection locking sleeve 24 is pushed to a fixed position, and the tube pushing mechanism will push the copper tube 50 out, and the tube pushing mechanism stops after the copper tube 50 touches the limiting rod 22; one is the limiting effect of the copper tube 50, and the other is that the core rod 21 rotates in the bending assembly 30 to prevent the copper tube 50 from wrinkling and deforming;

[0070] The push material detection adjustment rod 23 on the core pulling assembly 120 of the prior art determines the position and size of the limit rod 22 according to the position of the tube pushing mechanism, and is adjustable. Moreover, the eight copper tubes 50 will have different lengths of each limit rod 22 according to the position;

[0071] In this embodiment, a limiting step is added to the push material 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] It can be seen that the design of the limit step enables the limit rod 22 to be accurately positioned, ensuring the consistency of each processing. The adjustability of the push detection adjustment rod 23 allows the position of the limit rod 22 to be flexibly adjusted according to the different specifications of the copper tube 50 to meet the needs of various products. The design of the core rod 21 effectively prevents the copper tube 50 from wrinkling and deformation during the processing process, thereby improving the quality of the final product. After one positioning, the component can be reused many times, reducing adjustment time and improving work efficiency. The limiting function of the copper tube 50 ensures the stability of the tube pushing mechanism, reduces operational risks and failure rates. The optimized design of the entire core pulling assembly 120 improves the degree of automation of the production line, reduces manual intervention, and thus improves overall production efficiency.

[0073] In one embodiment, see Figure 6 and Figure 7 The core pull assembly 120 further includes a speed regulating valve 25, a nozzle connecting rod 26, a guide tube assembly 27, a nut 28, a core pull block 29, and a nozzle fixing screw 290; the other end of the core rod 21 is connected to the core pull block 29, a section of the core pull block 29 is also connected to the guide tube assembly 27, and a section of the guide tube assembly 27 is connected to the speed regulating valve 25; the nozzle fixing screw 290 is connected between the core rod 21 and the guide tube assembly 27. The nozzle connecting rod 26 is respectively connected to the speed regulating valve 25 and the guide tube assembly 27, and the nut 28 is fixed on the guide tube assembly 27.

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

[0075] The oil injection amount is adjusted by the speed regulating valve 25 to ensure uniform distribution of the oil mist during the core pulling process, thereby effectively reducing 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 regulating valve 25 makes the injection amount adjustable, optimizes the lubrication effect, and improves the processing accuracy. The nozzle fixing screw 290 ensures the stable position of the nozzle and reduces the vibration and displacement during operation. The design of the guide pipe assembly 27 ensures uniform distribution of the oil flow, reduces wear and increases the service life of parts. The connection design between the components simplifies the operation process and makes adjustment and maintenance more convenient. The optimization of the injection system effectively reduces the friction during the core pulling process, reduces energy consumption and wear, and improves work efficiency. The core pulling assembly 120 can adapt to different processing requirements and has high flexibility and versatility.

[0078] In one embodiment, see Figure 1 and Figure 2 The above-mentioned bending assembly 30 is installed above the material receiving mounting plate 193.

[0079] In one embodiment, see Figures 8 to 10 The above-mentioned bending assembly 30 includes a third power source 31, a reducer 32, a first bending bearing seat 33, a left swing arm 34, a plurality of bending molds 35, a plurality of bending mold seats 36, a plurality of clamping molds 37, a right swing arm 38, a clamping mold 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 mold cylinder 39 is connected to the bending mold seat 36, the clamping mold 37 is placed between two adjacent bending mold seats 36, the bending mold 35 is located above the clamping mold 37, and the clamping mold 37 and the bending mold 35 are respectively provided with arc grooves, and the arc groove on the clamping mold 37 and the arc groove on the bending mold 35 are enclosed to form 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 die 37 is placed between the bending die base 36 closest to the left swing arm 34 and the left swing arm 34 , and a clamping die 37 is placed between the bending die base 36 closest to the right swing arm 38 and the right swing arm 38 .

[0081] In one embodiment, see Figures 8 to 10The bending assembly 30 includes a rotation sensing sheet 391, which is connected to the second bending bearing seat 390; the bending assembly 30 also includes a bearing bushing 392, a bearing retaining ring 393, a bearing inner retaining ring 394, a ball bearing 395 and a hydraulic rotary joint 396, the hydraulic rotary joint 396 is inserted in the second bending bearing seat 390, the ball bearing 395 is connected in the second bending bearing seat 390, and a bearing retaining ring 393 and a bearing inner retaining ring 394 are placed between the ball bearing 395 and the second bending bearing seat 390. The bearing bushing 392 is located on the ball bearing 395.

[0082] Specifically, when the tube pushing mechanism pushes the copper tube 50 to the specified 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 to instruct the clamping die 37 to press the copper tube 50 to ensure that it is fixed. The bending assembly 30 starts to rotate, and the copper tube 50 is bent into a small U shape. This process is driven by the third power source 31, which is connected to the left swing arm 34 through the reducer 32.

[0083] After receiving the signal, the clamping die oil cylinder 39 clamps the copper tube 50 through the clamping die 37 and the bending die 35. The right swing arm 38 and the left swing arm 34 assembly rotate 186 degrees together to achieve the forming and bending of the copper tube 50.

[0084] The clamping die 37 and the bending die 35 are each provided with an arc groove, and these grooves are combined to form a through groove for the copper tube 50 to pass smoothly.

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

[0086] The assembly is internally provided with a ball bearing 395, a bearing retaining ring 393, an inner retaining ring, etc. to ensure the stability and smoothness of the bending process, and a hydraulic rotary joint 396 provides the necessary fluid connection.

[0087] Through the positioning function of the core pulling assembly 120, the accuracy of the copper tube 50 during the bending process is ensured to avoid deviation. The instant feedback of the sensor improves the automation level of the operation, reduces manual intervention, and improves work efficiency. The combination of the hydraulic system and the clamp 37 makes the copper tube 50 more stable during bending and ensures the molding quality. The design of multiple bending dies 35 and clamps 37 enables the equipment to adapt to the bending requirements of copper tubes 50 of different specifications and shapes. The equipped ball bearings 395 and hydraulic rotary joints 396 ensure the smooth rotation of the components and reduce wear and failure rate. During the bending process, the through groove design formed by the clamp 37 and the bending die 35 ensures the safety of the product during the processing and avoids jamming. The cooperation of the third power source 31 and the reducer 32 makes the energy conversion efficient, reduces the overall energy consumption, and improves the economy.

[0088] In one embodiment, see Figures 11 to 13 The above-mentioned upper material return assembly 40 includes a material return 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, a material return joint 47, a material return rod 48 and a fourth power source 49. The fourth power source 49 is connected to one side of the guide rail mounting plate 42 through the cylinder mounting plate 44, and the guide rail 43 is installed on the guide rail mounting plate 42; the second slider 46 is connected to the bottom of the slider mounting plate 45, and the second slider 46 is slidably connected to the guide rail 43; the slider mounting plate 45 is connected to the material return mounting plate 41; a plurality of material return rods 48 are connected to the side of the material return mounting plate 41 away from the slider mounting plate 45, and the other end of the material return rod 48 is close to the product.

[0089] In one embodiment, see Figures 11 to 13 The above-mentioned upper material return 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 an adjustment groove 491 is provided in the vertical plate. One side of the guide rail mounting plate 42 is connected to the vertical plate through a fastener, and the fastener is 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 to push the material return connector 47 forward. The movement of the fourth power source drives the slider mounting plate 45 and the material pusher mounting plate forward together, thereby pushing the material pusher rod. The U-shaped copper tube 50 is pushed from the bending die to the material tray, completing a product transfer. This series of actions constitutes a complete working cycle, preparing for the bending and material return of the next copper tube 50.

[0091] The slider is slidably connected to the guide rail 43 through the second slider 46 to ensure the smooth movement of the slider mounting plate 45. The material return mounting plate 41 is connected to the slider mounting plate 45, and one end of the material return rod 48 is close to the bent product to ensure its effective pushing. The design of the slide rail adjustment plate 490 allows the installation position of the guide rail 43 to be fine-tuned to meet different production requirements.

[0092] The pushing mechanism of the cylinder increases the speed of material withdrawal, ensuring that the copper tube 50 is quickly transferred from the bending die, reducing downtime. The design of the material withdrawal rod 48 ensures that the product does not shift during the transfer process, improving the consistency and quality of the product. The use of the guide rail 43 enables the slider to move smoothly, reduces friction and wear, and improves the stability of the system. The design of the slide rail adjustment plate 490 allows the operator to make fine adjustments as needed to adapt to copper tubes 50 of different specifications. The modular design between the components makes the maintenance and replacement of the system more convenient and reduces maintenance costs. The automated pushing mechanism reduces dependence on manual labor and improves production efficiency. The design of the material withdrawal component ensures safety during operation and reduces potential accident risks.

[0093] In the traditional small U bending process, there are the following problems: the limit and push position of each copper tube 50 are different, and need to be adjusted individually according to the shape of the small U on site. This one-tube-one-position method is not only complicated to debug, but also inefficient, which increases the trouble in the production process. The device of this embodiment has a unified limit design for the 8 copper tubes 50. Specifically, a step is added in the push material detection adjustment rod 23, so that all 8 copper tubes 50 can be limited at the same position at the same time. This design makes the positioning of the copper tube 50 simple and consistent. The design of the push tube assembly 10 is also optimized, and all copper tubes 50 are operated at the same position when pushing, ensuring the coordination and consistency of the pushing process. Through unified limit, the traditional one-tube-one-position positioning method is changed, the operation process is simplified, and the debugging time is reduced. This improvement realizes the standardization of the production process, and the operator only needs to operate according to the unified standard, which greatly improves the production efficiency. Since all copper tubes 50 are limited at the same position, the debugging of the equipment becomes faster and easier, and the time wasted due to individual adjustments is reduced. The improvement in production efficiency directly leads to an increase in benefits, which not only reduces labor costs but also improves product consistency and quality, thereby enhancing market competitiveness.

[0094] Through the above improvements, the efficiency, ease of operation and production benefits of the entire small U-bending process have been significantly improved, which has promoted the optimization of the production process.

[0095] The above-mentioned bending U positioning device of the bending sleeve integrated machine is provided with a push tube assembly 10, a core pulling assembly 120, a bending assembly 30 and an upper material withdrawal assembly 40, and all the components are connected to the push tube assembly 10; a primary moving structure and multiple position fine-tuning structures are provided in the push tube assembly 10 to facilitate fast and accurate feeding adjustment; a primary moving structure and multiple position fine-tuning structures are introduced in the push tube assembly 10; rapid adjustment is performed through a primary movement to reduce the need for frequent shutdowns and debugging, and the connection design of the bending assembly 30 and the core pulling assembly 120 with the push tube assembly 10 makes the overall operation more coordinated and consistent, and the unified limit design simplifies the setting of the feeding position and improves production efficiency. This improvement ensures that the size meets the requirements, while greatly reducing the debugging time and cost.

[0096] In one embodiment, a working method performed by the above-mentioned U-bend positioning device of the bending sleeve integrated machine is also provided, including:

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

[0098] When the product reaches the designated position, the core pulling assembly 120 limits the position of the product;

[0099] The product after limiting is bent by using a bending assembly 30;

[0100] Push the bent product to the designated location or outlet.

[0101] It should be noted that technicians in the relevant field can clearly understand that the specific implementation process of the working method performed by the U-bend positioning device of the above-mentioned bending sleeve integrated machine can refer to the corresponding description in the aforementioned device embodiment. For the convenience and conciseness of the description, it will not be repeated here.

[0102] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A U-bend positioning device for a bending sleeve integrated machine, characterized in that: include: A push tube assembly, a core pulling assembly, a bending assembly and an upper material return assembly, wherein the bending assembly is connected to the push tube assembly, the core pulling assembly is connected to the push tube assembly, and the upper material return assembly is connected to the push tube assembly; the push tube 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.

2. The U-bend positioning device of a bending sleeve integrated machine according to claim 1, characterized in that: The position fine-tuning structure includes a push plate, a plurality of secondary push rods, a plurality of intermediate sleeves, a plurality of conduits and a plurality of joints. The push plate is connected to the primary movable structure. The push plate is provided with a plurality of mounting grooves. The joints are mounted in the mounting grooves. The joints are connected to the intermediate sleeve. The secondary push rod is connected to the intermediate sleeve. One end of the secondary push rod passes through the conduit.

3. The U-bend positioning device of a bending sleeve integrated machine according to claim 2, 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 material 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 pushing 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 material receiving mounting plate, and the first slider is slidably connected to the slide rail.

4. The U-bend positioning device of a bending sleeve integrated machine according to claim 3, characterized in that: The core pulling assembly includes a plurality of core rods, a limit rod, a push material detection adjustment rod and a push material detection locking sleeve; the secondary push rod passes through one end of the guide tube to abut the product, and the other end of the product abuts the core rod, the limit rod is inserted into the core rod, one end of the core rod passes through the push material detection adjustment rod, a stepped groove is provided in the push material detection adjustment rod, and the push material detection locking sleeve is connected to the outer periphery of the limit rod.

5. The U-bend positioning device of a bending sleeve integrated machine according to claim 3, characterized in that: The bending assembly is installed above the material receiving installation plate.

6. The U-bend positioning device of a bending sleeve integrated machine according to claim 5, characterized in that: The bending assembly includes a third power source, a reducer, a first bending bearing seat, a left swing arm, a plurality of bending molds, a plurality of bending mold seats, a plurality of clamping molds, a right swing arm, a clamping mold 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 mold cylinder is connected to the bending mold seat, the clamping mold is placed between two adjacent bending mold seats, the bending mold is located above the clamping mold, the clamping mold and the bending mold are respectively provided with arc grooves, the arc groove on the clamping mold and the arc groove on the bending mold enclose a through groove for the product to pass through; the right swing arm is connected to the second bending bearing seat.

7. The U-bend positioning device of a bending sleeve integrated machine according to claim 6, characterized in that: The bending component includes a rotational sensing plate, which is connected to the second bending bearing seat; the bending component also includes a bearing sleeve, a bearing retaining ring, a bearing inner retaining ring, a ball bearing and a hydraulic rotating joint, the hydraulic rotating joint is inserted in the second bending bearing seat, the ball bearing is connected in the second bending bearing seat, and a bearing retaining ring and a bearing inner retaining ring are placed between the ball bearing and the second bending bearing seat.

8. The U-bend positioning device of a bending sleeve integrated machine according to claim 4, characterized in that: The upper material return assembly includes a material return mounting plate, a guide rail mounting plate, a guide rail, a cylinder mounting plate, a slider mounting plate, a second slider, a material return joint, a material return rod 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 installed on the guide rail mounting plate; the second slider is connected to the bottom of the slider mounting plate, and the second slider is slidably connected to the guide rail; the slider mounting plate is connected to the material return mounting plate; a plurality of material return rods are connected to the side of the material return mounting plate away from the slider mounting plate, and the other end of the material return rod is close to the product.

9. The U-bend positioning device of a bending sleeve integrated machine according to claim 8, characterized in that: The upper material return assembly also includes a slide rail adjustment plate, which includes a transverse plate and a vertical plate. One side of the transverse plate is connected to the vertical plate, and an adjustment groove is provided in the vertical plate. One side of the guide rail mounting plate is connected to the vertical plate through a fastener, and the fastener is connected in the adjustment groove.

10. A working method performed by the bending U positioning device of the bending sleeve integrated machine according to any one of claims 1 to 9, characterized in that: include: The primary moving structure of the push tube assembly pushes the position fine-tuning structure to move, and the position fine-tuning structure pushes the product to the specified position; When the product reaches the specified position, the core pulling component limits the product; The products after limiting are bent by using bending components; Push the bent product to the designated location or outlet.

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