Automatic nut sleeving mechanism for pipe fitting

Abstract

The invention provides an automatic nut sleeving mechanism for a pipe fitting, which comprises a feeding component, a nut sleeving component, a nut sleeving component, a nut sleeving component, a nut sleeving component, a nut sleeving component, a nut sleeving component and a nut sleeving component, and is characterized in that the feeding component is provided with a trough capable of accommodating a row of nuts; the copper pipe conveying component is used for conveying copper pipes; the positioning and clamping part is located on the conveying path of the copper pipe to form a copper pipe sleeving position and used for clamping the copper pipe conveyed to the copper pipe sleeving position; and the nut sleeving part is used for taking out a nut from the discharging end of the feeding part and sleeving the nut on the copper pipe at the copper pipe sleeving position. The feeding part is used for controlling one-by-one feeding of the nuts; the copper pipe needing to be sleeved with the nut is fixed to the copper pipe sleeving position through the positioning and clamping component. A nut is grabbed in the feeding component through the nut sleeving component and moved to the corresponding position of a copper pipe to be aligned, the copper pipe is sleeved with the nut through pushing of an air cylinder, manual operation can be replaced, and the copper pipe is automatically sleeved with the nut.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioner manufacturing, in particular to an automatic nut-sleeving mechanism for a pipe fitting. Background Art

[0002] In the manufacturing process of air conditioners, the connection between copper tubes and nuts is a common and important part, especially in multiple processes. The quality of the connection directly affects the stability and service life of the air conditioning system. In most applications, the copper tubes of air conditioners are connected by nuts, which requires that the copper tubes and nuts must fit accurately to form a firm connection assembly. In order to ensure the reliability and sealing of the connection, the copper tubes and nuts must be matched with high precision.

[0003] However, most current production models still rely on manual operation. In manual operation, workers first need to manually connect the copper tube and the nut before proceeding to the next step. Although this method is feasible in small-batch production, in a large-scale production environment, manual operation is not only inefficient but also prone to quality fluctuations. With the rapid development of automated production lines and technological advances, the traditional manual operation mode has shown many shortcomings.

[0004] Therefore, there is an urgent need for an automatic nut-sleeving mechanism for pipe fittings that is suitable for automated production of assembly lines. Summary of the invention

[0005] In order to solve the technical problem of low efficiency of sleeve connection between copper pipes and nuts in the above-mentioned prior art, the present invention provides an automatic nut sleeve mechanism for pipe fittings.

[0006] The technical solution adopted by the present invention is:

[0007] The present invention provides a pipe fitting automatic nut-sleeving mechanism, comprising:

[0008] A feeding component, having a trough for accommodating a row of nuts and capable of driving the nuts to move along the trough toward a discharge end of the trough;

[0009] Copper tube conveying parts, used for conveying copper tubes;

[0010] A positioning clamping component is located on the conveying path of the copper tube to form a copper tube socket position, and is used to clamp the copper tube conveyed to the copper tube socket position;

[0011] The nut sleeve component is used to take out the nut from the discharge end of the feed component and sleeve it on the copper tube at the copper tube sleeve position.

[0012] Specifically, the feeding component includes:

[0013] A trough block, on which the trough is provided running through both ends, and the trough block is tilted so that the discharge end of the trough is lower than the feed end;

[0014] A feeding device is connected to the feeding end of the trough block and is used to feed the nuts to the trough block.

[0015] Furthermore, an adjacent material removal position and a material limit position are arranged at the discharge end of the trough block; the feeding component also includes: a material limit component, which is arranged near the discharge end of the trough block and is used to limit the nut reaching the material limit position. When the nut at the material removal position is taken out by the nut sleeve component and the nut sleeve component blocks the discharge end again, the nut at the material limit position is released so that the nut at the material limit position moves to the material removal position.

[0016] Furthermore, the trough block is provided with a material taking notch on the trough wall corresponding to the material taking position, and is provided with a material limiting hole on the trough wall corresponding to the material limiting position, so that the material limiting component can be inserted into the trough through the material limiting hole.

[0017] Specifically, the nut sleeve component includes:

[0018] A nut positioning rod, one end of which can pass through the nut;

[0019] The pusher block comprises a connected horizontal plate and a vertical plate, wherein the horizontal plate is provided with a through hole through which the nut positioning rod can pass;

[0020] The nut sleeve driving assembly can drive the screw positioning rod to move horizontally to a position perpendicular to the side of the discharge end of the trough, and synchronously drive the vertical plate of the pushing block to block the discharge end of the trough, drive the screw positioning rod to move longitudinally through the nut at the discharge end of the trough, and then drive the screw positioning rod to move horizontally to face the copper tube at the copper tube sleeve position, and then drive the nut positioning rod and the pushing block to move synchronously longitudinally until the nut positioning rod contacts the copper tube, and then drive the pushing block alone so that the horizontal plate of the pushing block pushes the nut on the nut positioning rod onto the copper tube.

[0021] Furthermore, the sleeve nut driving assembly includes:

[0022] A first mounting plate, on which a lateral moving guide rail group parallel to the copper tube conveying direction is provided, and a lateral cylinder assembly is installed;

[0023] A second mounting plate is slidably mounted on the transverse movable guide rail assembly, and the second mounting plate can be driven to move by a transverse cylinder assembly, and a longitudinal cylinder assembly and a longitudinal movable guide rail assembly are mounted on the second mounting plate;

[0024] The third mounting plate is slidably mounted on the longitudinal movable guide rail group, and can be driven to move by the longitudinal cylinder assembly. The third mounting plate is provided with a positioning cylinder assembly and a pushing cylinder assembly, both of which have longitudinal driving directions. The nut positioning rod is connected to the driving end of the positioning cylinder assembly, and the pushing block is connected to the driving end of the pushing cylinder assembly.

[0025] Furthermore, a third cylinder connecting block is provided on the side of the third mounting plate, the driving end of the longitudinal cylinder assembly is connected to the third cylinder connecting block, an opening is provided on the first mounting plate, and a second cylinder connecting block passing through the opening is provided on the back of the second mounting plate, the transverse cylinder assembly is installed on the back of the first mounting plate, and the transverse moving guide rail group is installed on the front of the first mounting plate.

[0026] Furthermore, the positioning cylinder assembly and the pushing cylinder assembly are mounted side by side on the third mounting plate.

[0027] Specifically, the positioning and clamping component includes: a positioning and clamping support plate, a positioning and clamping cylinder installed on the vertical side of the positioning and clamping support plate, two rotating rods are arranged on the upper part of the positioning and clamping cylinder, and clamping fingers are respectively arranged on the rotating rods, each clamping finger is provided with a semicircular notch, when the cylinder drives the two rotating rods to rotate upward to a vertical position, the two rotating rods drive the two clamping fingers to clamp the copper tube at the position symmetrical to their semicircular notches.

[0028] Furthermore, the positioning clamping component and the sleeve nut component are installed on the same base plate.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] The present invention controls the supply of nuts one by one through a feeding component; and fixes the copper tube that needs to be covered with a nut at the copper tube sleeve position through a positioning clamping component; a nut is grabbed in the feeding component, moved to a corresponding position of the copper tube for alignment, and a cylinder pushes the nut to be covered on the copper tube, which can replace manual operation and realize automatic covering of the nut on the copper tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 is a three-dimensional structural diagram of an embodiment of the present invention;

[0033] Figure 2 is a planar structural diagram of an embodiment of the present invention;

[0034] Figure 3 is a three-dimensional structural diagram of a feeding mechanism in an embodiment of the present invention;

[0035] Figure 4 is a planar structural diagram of a feeding mechanism in an embodiment of the present invention;

[0036] Figure 5 It is a three-dimensional structural diagram of a feeding mechanism including a nut in an embodiment of the present invention;

[0037] Figure 6 is a planar structural diagram of a feeding mechanism including a nut in an embodiment of the present invention;

[0038] Figure 7 is a three-dimensional structural diagram of a nut sleeve component in an embodiment of the present invention;

[0039] Figure 8 It is a planar structural diagram of a nut sleeve component in an embodiment of the present invention;

[0040] Fig. 9 is a planar structural diagram of a positioning and clamping component in an embodiment of the present invention;

[0041] 1. Feeding parts;

[0042] 11. Material trough block; 12. Material limiting motor; 13. Material limiting cylinder mounting plate; 14. Material limiting mounting plate; 15. Bushing; 16. Push rod; 111. Material taking notch;

[0043] 2. Copper tube transmission parts;

[0044] 3. Positioning and clamping parts;

[0045] 31. Positioning and clamping support plate; 32. Positioning and clamping cylinder; 33. Rotating rod; 34. Clamping finger;

[0046] 4. Nut set parts;

[0047] 41. First mounting plate; 411. Lateral moving guide rail assembly; 412. Lateral cylinder assembly;

[0048] 42. Second mounting plate; 421. Longitudinal moving guide rail assembly; 422. Longitudinal cylinder assembly; 423. Second cylinder connecting block;

[0049] 43. The third mounting plate; 431. The positioning cylinder assembly; 432. The pushing cylinder assembly; 433. The third cylinder connecting block;

[0050] 44. Nut positioning rod; 45. Pushing block; 46. Support block;

[0051] 5. Copper tube;

[0052] 6. Nut;

[0053] 7. Base plate. DETAILED DESCRIPTION

[0054] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0055] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0056] Most current production models still rely on manual operation. In manual operation, workers first need to manually connect the copper tube and the nut before proceeding to the next step. Although this method is feasible in small-batch production, in a large-scale production environment, manual operation is not only inefficient but also prone to quality fluctuations. With the rapid development of automated production lines and technological advances, the traditional manual operation mode has shown many shortcomings.

[0057] In this regard, Figure 1 , 2 As shown, the present invention proposes an automatic nut-sleeving mechanism for pipe fittings. Specifically, the pipe fittings can be copper pipes, that is, it is used to automatically sleeve the nut 6 on the copper pipe 5. It specifically includes: a feeding component 1, a copper pipe conveying component 2, a positioning and clamping component 3 and a nut-sleeving component 4, and also includes a control module for controlling each component. The feeding component 1 is used to convey the nuts 6 to be sleeved, and is provided with a material trough, the width of which is slightly larger than the thickness of the nuts 6, so that the nuts 6 can stand in a row in the material trough; at the same time, the feeding component 1 can drive the nuts 6 to move toward the discharge end of the material trough; the copper tube conveying component 2 is provided with a conveyor belt, which is used to convey the copper tube 5 horizontally, and the copper tubes 5 are placed on the conveyor belt in parallel at intervals, and the axial direction of the copper tube 5 is longitudinal, which is perpendicular to the conveying direction; the positioning and clamping component 3 is arranged on the side of the copper tube conveying component 2, that is, it is located on the conveying path of the copper tube 5, and the position where the copper tube 5 is clamped is the copper tube sleeve position. When the copper tube 5 moves horizontally along the conveyor belt to the copper tube sleeve position, the positioning and clamping component 3 clamps the copper tube 5. After the nut 6 is sleeved on the copper tube 5, the positioning and clamping component 3 loosens the copper tube 5, so that the copper tube 5 with the nut 6 can continue to be conveyed through the copper tube conveying component 2. The nut 6 can be driven to move horizontally and vertically by the nut assembly 4. The nut 6 can be taken out from the discharge end of the feed assembly 1 and assembled on the copper tube 5 at the copper tube sleeve joint.

[0058] The present invention controls the supply of nuts 6 one by one through a feeding component 1; and fixes the copper tube 5 that needs to be covered with a nut 6 at the copper tube sleeve position through a positioning clamping component 3; and grabs a nut 6 in the feeding component 1 and moves it to the corresponding position of the copper tube 5 for alignment through a nut sleeve component 4, and the cylinder pushes the nut 6 to be sleeved on the copper tube 5, which can replace manual operation and realize automatic sleeve of the nut 6 on the copper tube 5.

[0059] In a specific embodiment, Figures 3 to 6 As shown, the feeding component 1 includes: a trough block 11 and a feeding device, wherein the trough block 11 is an inclined long strip structure, on which a trough running through both ends is provided, the trough is used to accommodate the nut 6 and ensure that the nut 6 slides along the trough to the discharge end. The inclination angle of the trough block 11 is set according to actual needs to ensure that the nut 6 can reduce the sliding resistance. The cross-sectional shape of the trough is designed according to the size and shape of the nut 6, so that the nut 6 can be arranged in a row in a stable state to avoid jamming or accumulation. The feeding device is arranged at the feeding end of the trough block 11, and is used to continuously and stably feed the nuts 6 into the trough block 11. The feeding device can specifically include a vibrating disk and a conveying channel, the vibrating disk is used to arrange the nuts 6 and arrange them neatly, and the conveying channel is connected to the outlet of the vibrating disk to ensure that the arranged nuts 6 enter the trough block 11 in a single row. The vibration frequency and channel width of the feeding device are adjustable to adapt to nuts 6 of different specifications, further improving the versatility and stability of the equipment.

[0060] Through the above design, the feeding component 1 can realize automatic sorting, stable feeding and smooth conveying of the nuts 6, ensuring that the nuts 6 in the trough are always in a stable feeding state, providing reliable support for the subsequent component's operation of inserting the nuts 6. At the same time, this design can effectively avoid problems such as blockage and dumping during the feeding process of the nuts 6, and improve the overall operating efficiency and reliability of the equipment.

[0061] Furthermore, adjacent material taking positions and material limit positions are set at the discharge end of the material trough block 11 to realize step-by-step conveying and material taking control of the nuts 6; the material taking position is the position for the sleeve nut component 4 to directly take materials, and the material limit position is used to temporarily store the nuts 6 that are about to be moved to the material taking position, so as to ensure the continuity and reliability of the feeding process.

[0062] The feed component 1 also includes a material limiting component, which is arranged near the discharge end of the trough block 11. The material limiting component can specifically realize precise control of the material limiting position nut 6 through, for example, a mechanical baffle, a spring mechanism or an electromagnetic drive device. During normal operation, the material limiting component will keep the nut 6 at the material limiting position in a blocking state to prevent multiple nuts 6 from sliding to the material taking position at the same time, causing the nut 6 to get stuck or the material taking error. When the nut sleeve component 4 completes the material taking operation of the material taking position nut 6 and blocks the discharge end again, the material limiting component will temporarily release the nut 6 at the material limiting position to move it to the material taking position to prepare for the next operation.

[0063] In addition, in order to ensure the efficient operation of the material limiting component, the action of the material limiting component can also be coordinated through sensor monitoring and control system. The sensor can detect in real time whether there are nuts at the material taking level and the material limiting level, and feed back the signal to the control system to ensure that the nuts at the material limiting level are released at the appropriate time. The control system adjusts the action frequency and intensity of the material limiting component according to the rhythm of material taking and releasing to meet the needs of different workloads and production rhythms.

[0064] Through such a design, the cooperation between the material trough block 11 and the material limiting component can achieve precise control during the nut feeding process, which not only avoids the jamming problem caused by the simultaneous sliding of multiple nuts, but also ensures that the material taking position is always in a state where material can be taken, thereby improving the continuity of the operation of the nut sleeve 6 and the overall efficiency of the equipment.

[0065] Specifically, the trough block 11 is provided with a material taking notch 111 on the trough wall corresponding to the material taking position. The material taking notch 111 is an open structure, which is convenient for the sleeve nut component 4 to directly contact the nut 6 on the material taking position when taking materials. The material taking notch 111 is specifically two U-shaped notches, and the U-shaped opening is opposite to the end of the material taking block, which is convenient for the nut 6 positioning rod 44 passing through the nut 6 to move horizontally away from the material taking end. The trough block 11 is provided with a material limiting hole on the trough wall corresponding to the material limiting position. The function of the material limiting hole is to provide a channel for the insertion of the material limiting component, so that the material limiting component can be accurately inserted into the trough and contact (or pass through) the nut 6 at the material limiting position.

[0066] Through the design of the material taking notch 111 and the material limiting hole, the material trough block 11 realizes the precise division of the material taking position and the material limiting position in structure, which not only facilitates the grabbing operation of the nut sleeve component 4 on the nut, but also ensures the effective control of the nut by the material limiting component. Such a design not only improves the reliability of the overall operation of the equipment, but also optimizes the structural layout, making the equipment more compact and adaptable to the needs of various production environments.

[0067] It should be noted that the size of the limiting hole and the width of the material removal notch 111 are slightly larger than or equal to the nut hole of the nut 6, so as not to affect the arrangement and sliding of the nut 6 in the material trough.

[0068] In a specific embodiment, the material limiting component uses a cylinder to limit the position, specifically including: a material limiting mounting plate 14, a material limiting cylinder mounting plate 13, a material limiting cylinder, and a bushing 15. The material limiting mounting plate 14 is mounted on the side of the material trough block 11, and is provided with a bushing 15. The bushing 15 corresponds to the material limiting hole on the side of the material trough block 11, and its push rod 16 can pass through the limiting hole and be inserted into the material trough. The material limiting cylinder mounting plate 13 is vertically mounted on the material limiting mounting plate 14, and the material limiting cylinder is mounted on the material limiting cylinder mounting plate 13. Its telescopic rod is connected to the push rod 16 of the bushing 15. When the telescopic rod is extended, it drives the push rod 16 to be inserted into the material trough for limiting the position. When the telescopic rod is retracted, it drives the push rod 16 to exit the material trough.

[0069] like Figure 7 , 8 As shown, specifically, the nut sleeve component 4 includes a nut positioning rod 44, a pusher block 45 and a nut sleeve drive assembly, and the various components are precisely matched to jointly realize the transportation of the nut 6 from the discharge end of the trough to the copper tube sleeve connection position.

[0070] The outer diameter of one end of the nut positioning rod 44 gradually decreases, so as to facilitate the passage of the nut 6 and stably fix it on the rod body. The pusher block 45 is composed of a connected horizontal plate and a vertical plate. A through hole is provided on the horizontal plate. The size of the through hole matches the diameter of the nut positioning rod 44, so that the nut positioning rod 44 can freely pass through the through hole. The function of the vertical plate is to act as a baffle. Under the action of the nut drive assembly, the vertical plate can block the discharge end of the trough to prevent the nut 6 in the trough from slipping out before the nut positioning rod 44 passes through the nut 6.

[0071] The nut sleeve drive assembly can drive the nut positioning rod 44 and the push block 45 to perform precise compound movements. Specifically, the nut sleeve drive assembly includes a transverse drive mechanism and a longitudinal drive mechanism. The transverse drive mechanism can drive the nut positioning rod 44 to translate in the transverse direction, so that it moves from an initial position perpendicular to the material trough discharge end to a position directly opposite to the copper tube sleeve position. The longitudinal drive mechanism is responsible for driving the nut positioning rod 44 to move up and down to complete the operation of passing through the nut 6 at the material trough discharge end and docking with the copper tube 5.

[0072] In the actual working process, the nut sleeve driving assembly first drives the nut positioning rod 44 to move horizontally to the side of the discharge end of the trough, and at the same time, the vertical plate of the push block 45 blocks the discharge end of the trough to ensure that the nut 6 in the trough is in a stationary state. Subsequently, the longitudinal driving mechanism drives the nut positioning rod 44 to pass through the nut 6 at the discharge end of the trough to complete the initial positioning of the nut 6. Next, the nut sleeve driving assembly drives the nut positioning rod 44 to move horizontally again so that it is directly opposite to the copper tube 5 at the copper tube sleeve position. At this time, the longitudinal driving mechanism synchronously drives the nut positioning rod 44 and the push block 45 to move until the nut positioning rod 44 contacts the copper tube 5 to complete the alignment action. Finally, by driving the push block 45 to move longitudinally alone, the nut 6 is pushed from the nut positioning rod 44 to the copper tube 5 to complete the entire operation of sleeve nut 6.

[0073] Through the above design, the nut sleeve component 4 can efficiently realize the automatic conveying, accurate positioning and stable installation of the nut 6, greatly improving the operation efficiency and product quality of the equipment. In addition, the precise matching of each component further reduces the error in operation, making the entire device adaptable to nuts 6 and copper tubes 5 of various specifications, enhancing the applicability and flexibility of the equipment.

[0074] In a further embodiment, the nut drive assembly specifically includes a first mounting plate 41, a second mounting plate 42 and a third mounting plate 43, and precise sliding fit and drive control are achieved between the mounting plates through guide rails and cylinder assemblies, thereby completing the multi-dimensional movement operation of the nut 6 from the material trough to the copper tube 5.

[0075] The first mounting plate 41 is the basic supporting structure of the nut sleeve driving assembly, and is provided with a transverse moving guide rail group 411 parallel to the conveying direction of the copper tube 5, which is used to support and guide the transverse movement of the second mounting plate 42. A transverse cylinder assembly 412 is also installed on the first mounting plate 41, and the transverse cylinder assembly 412 drives the second mounting plate 42 to slide on the transverse moving guide rail group 411 through air pressure regulation, so that the nut positioning rod 44 and the copper tube sleeve joint are preliminarily aligned.

[0076] The second mounting plate 42 is slidably mounted on the transverse moving guide rail group 411, and as an intermediate transmission mechanism, it undertakes the task of linking the longitudinal drive and the transverse drive. The second mounting plate 42 is mounted with a longitudinal moving guide rail group 421 and a longitudinal cylinder assembly 422, and the longitudinal moving guide rail group 421 provides longitudinal sliding support for the third mounting plate 43. The longitudinal cylinder assembly 422 drives the third mounting plate 43 to move along the longitudinal moving guide rail group 421 by adjusting the driving air pressure.

[0077] The third mounting plate 43 is slidably mounted on the longitudinal moving guide rail group 421 on the second mounting plate 42, and can be driven by the longitudinal cylinder assembly 422 to move precisely in the longitudinal direction. The third mounting plate 43 is provided with a positioning cylinder assembly 431 and a pushing cylinder assembly 432 with a longitudinal driving direction. The driving end of the positioning cylinder assembly 431 is connected to the nut positioning rod 44, which can drive the nut positioning rod 44 to move in the longitudinal direction, so that it passes through the nut 6 at the discharge end of the trough and completes the precise alignment with the copper tube 5. The driving end of the pushing cylinder assembly 432 is connected to the pushing block 45. When the nut positioning rod 44 completes the alignment, the pushing cylinder assembly 432 drives the pushing block 45 to push the nut 6 from the nut positioning rod 44 to the copper tube 5, completing the final action of the sleeve nut 6. Specifically, a support block 46 is installed on the third mounting plate 43, and the support block 46 is supported on the bottom surface of the pushing block 45, so as to improve the pushing accuracy of the pushing block 45.

[0078] Through the coordinated cooperation of the first, second and third mounting plates, the sleeve nut drive assembly realizes the full process automation operation from lateral movement, longitudinal positioning to push installation. The precise cooperation of each guide rail and cylinder assembly not only improves the accuracy and stability of equipment operation, but also significantly improves work efficiency and reliability.

[0079] In the sleeve nut drive assembly structure, a dedicated third cylinder connecting block 433 is arranged on the side of the third mounting plate 43. The third cylinder connecting block 433 is connected to the driving end of the longitudinal cylinder assembly 422, and is used to transmit the driving force of the longitudinal cylinder assembly 422 to the third mounting plate 43, so that it can complete precise longitudinal movement along the longitudinal moving guide rail group 421.

[0080] The first mounting plate 41 is provided with an opening for cooperating with the movement of the second mounting plate 42. A second cylinder connection block 423 passing through the opening of the first mounting plate 41 is installed on the back of the second mounting plate 42, and the connection block is connected to the driving end of the transverse cylinder assembly 412. The transverse cylinder assembly 412 is installed on the back of the first mounting plate 41, while the transverse moving guide rail assembly 411 is fixed on the front of the first mounting plate 41. This arrangement effectively utilizes the spatial layout, making the equipment structure more compact, and at the same time separates the positions of the driving components and the guide rail components, avoiding interference between components, thereby improving the overall stability and operation efficiency.

[0081] The positioning cylinder assembly 431 and the pushing cylinder assembly 432 are installed side by side on the front of the third mounting plate 43, so that the two cylinder assemblies can be driven independently. The driving end of the positioning cylinder assembly 431 is connected to the nut positioning rod 44, which is mainly used to accurately position the nut 6 in the longitudinal direction. The driving end of the pushing cylinder assembly 432 is connected to the pushing block 45, which is used to push the nut 6 onto the copper tube 5 after positioning is completed. The side-by-side installation design not only simplifies the structural layout, but also reduces driving interference, and provides convenience for the maintenance and overhaul of the cylinder.

[0082] Specifically, Fig. 9 As shown, the positioning and clamping component 3 specifically includes a positioning and clamping support plate 31 , a positioning and clamping cylinder 32 , a rotating rod 33 and clamping fingers 34 .

[0083] The positioning clamping support plate 31 serves as an integral support structure. A positioning clamping cylinder 32 is installed on the vertical side of the positioning clamping support plate 31. The cylinder is the power source for the clamping action. Two rotating rods 33 are arranged on the upper part of the positioning clamping cylinder 32. These rotating rods 33 are fixed to the driving end of the cylinder by mechanical connection, and can realize upward rotation with the movement of the cylinder. When the cylinder pushes the rotating rod 33 upward, the two rotating rods 33 rotate upward around their respective axes respectively, and finally reach a vertical position. A clamping finger 34 is installed on each rotating rod 33. The shape of these clamping fingers 34 is specially designed so that it can firmly clamp the copper tube 5. A semicircular notch is arranged on the clamping finger 34, and the curvature of the notch matches the outer diameter of the copper tube 5, so as to realize the fitting clamping of the surface of the copper tube 5. When the two rotating rods 33 rotate to the vertical position, the two clamping fingers 34 are symmetrically distributed, and their semicircular notches are precisely around the two sides of the copper tube 5 to clamp the copper tube 5. Such a design can effectively prevent the copper tube 5 from sliding or deflecting during operation, and will not cause damage to the surface of the copper tube 5.

[0084] The entire clamping action is controlled by the positioning clamping cylinder, the action process is smooth, the clamping force is uniform, and it is suitable for copper tubes of different specifications and materials. The structural design of the positioning clamping components ensures that the copper tube is always in the correct position during the transmission and nut-threading process, improving the overall assembly accuracy and the stability of automated production.

[0085] In a specific embodiment, the positioning clamping component and the sleeve nut component are installed together on a bottom plate, wherein four support columns are provided on the bottom surface of the first mounting plate of the sleeve nut component, which raises the sleeve nut component as a whole to form a compact, integrated working unit. This structural design not only optimizes the spatial layout of the equipment, but also enhances the collaborative working ability between the components, ensuring the stability and accuracy of the operation of the whole machine.

[0086] The specific control process is as follows:

[0087] When the control module controls the telescopic rod of the horizontal cylinder assembly to be in a retracted state, the push block leans against the discharge end of the trough block. When the control module controls the telescopic rod of the horizontal cylinder assembly to be in an extended state, the nut positioning rod is aligned with the copper tube at the copper tube socket position.

[0088] The telescopic rod of the longitudinal cylinder assembly drives the nut positioning rod to extend, so that the nut positioning rod contacts the copper tube at the copper tube sleeve position. Then the telescopic rod of the push cylinder assembly extends to drive the push block to be pushed out. After the action is completed, the telescopic rod of the push cylinder assembly is first controlled to retract, then the telescopic rod of the positioning cylinder assembly is controlled to retract, then the telescopic rod of the longitudinal cylinder assembly is controlled to retract, and finally the telescopic rod of the transverse cylinder assembly is controlled to retract, driving the respective corresponding mechanisms to the initial state, and then repeating the above actions to achieve continuous automatic nut removal and nut insertion.

[0089] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0090] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0091] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0092] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0093] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0094] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipe fitting automatic nut-sleeving mechanism, characterized in that: include: A feeding component, having a trough for accommodating a row of nuts and capable of driving the nuts to move along the trough toward a discharge end of the trough; Copper tube conveying parts, used for conveying copper tubes; A positioning clamping component is located on the conveying path of the copper tube to form a copper tube socket position, and is used to clamp the copper tube conveyed to the copper tube socket position; The nut sleeve component is used to take out the nut from the discharge end of the feed component and sleeve it on the copper tube at the copper tube sleeve position.

2. The automatic nut-sleeving mechanism for pipe fittings according to claim 1, characterized in that: The feeding component comprises: A trough block, on which the trough is provided running through both ends, and the trough block is tilted so that the discharge end of the trough is lower than the feed end; A feeding device is connected to the feeding end of the trough block and is used to feed the nuts to the trough block.

3. The automatic nut-sleeving mechanism for pipe fittings according to claim 2, characterized in that: The discharge end of the trough block is provided with an adjacent material taking position and a material limit position; the feeding component also includes: a material limit component, which is arranged near the discharge end of the trough block and is used to limit the nut reaching the material limit position. When the nut at the material taking position is taken out by the nut sleeve component and the nut sleeve component blocks the discharge end again, the nut at the material limit position is released so that the nut at the material limit position moves to the material taking position.

4. The automatic nut-sleeving mechanism for pipe fittings according to claim 3, characterized in that: The trough block is provided with a material taking notch on the trough wall corresponding to the material taking position, and is provided with a material limiting hole on the trough wall corresponding to the material limiting position, so that the material limiting component can be inserted into the trough through the material limiting hole.

5. The automatic nut-sleeving mechanism for pipe fittings according to claim 1, characterized in that: The sleeve nut component comprises: A nut positioning rod, one end of which can pass through the nut; The pusher block comprises a connected horizontal plate and a vertical plate, wherein the horizontal plate is provided with a through hole through which the nut positioning rod can pass; The nut sleeve driving assembly can drive the screw positioning rod to move horizontally to a position perpendicular to the side of the discharge end of the trough, and synchronously drive the vertical plate of the pushing block to block the discharge end of the trough, drive the screw positioning rod to move longitudinally through the nut at the discharge end of the trough, and then drive the screw positioning rod to move horizontally to face the copper tube at the copper tube sleeve position, and then drive the nut positioning rod and the pushing block to move synchronously longitudinally until the nut positioning rod contacts the copper tube, and then drive the pushing block alone so that the horizontal plate of the pushing block pushes the nut on the nut positioning rod onto the copper tube.

6. The automatic nut-sleeving mechanism for pipe fittings according to claim 5, characterized in that: The sleeve nut driving assembly comprises: A first mounting plate, on which a lateral moving guide rail group parallel to the copper tube conveying direction is provided, and a lateral cylinder assembly is installed; A second mounting plate is slidably mounted on the transverse movable guide rail assembly, and the second mounting plate can be driven to move by a transverse cylinder assembly, and a longitudinal cylinder assembly and a longitudinal movable guide rail assembly are mounted on the second mounting plate; The third mounting plate is slidably mounted on the longitudinal movable guide rail group, and can be driven to move by the longitudinal cylinder assembly. The third mounting plate is provided with a positioning cylinder assembly and a pushing cylinder assembly, both of which have longitudinal driving directions. The nut positioning rod is connected to the driving end of the positioning cylinder assembly, and the pushing block is connected to the driving end of the pushing cylinder assembly.

7. The automatic nut-sleeving mechanism for pipe fittings according to claim 6, characterized in that: A third cylinder connecting block is provided on the side of the third mounting plate, and the driving end of the longitudinal cylinder assembly is connected to the third cylinder connecting block. An opening is provided on the first mounting plate, and a second cylinder connecting block passing through the opening is provided on the back of the second mounting plate. The transverse cylinder assembly is installed on the back of the first mounting plate, and the transverse moving guide rail group is installed on the front of the first mounting plate.

8. The automatic nut-sleeving mechanism for pipe fittings according to claim 6, characterized in that: The positioning cylinder assembly and the pushing cylinder assembly are mounted side by side on the third mounting plate.

9. The automatic nut-sleeving mechanism for pipe fittings according to claim 1, characterized in that: The positioning and clamping component includes: a positioning and clamping support plate, a positioning and clamping cylinder installed on the vertical side of the positioning and clamping support plate, two rotating rods are arranged on the upper part of the positioning and clamping cylinder, and clamping fingers are respectively arranged on the rotating rods, each clamping finger is provided with a semicircular notch, when the cylinder drives the two rotating rods to rotate upward to a vertical position, the two rotating rods drive the two clamping fingers to clamp the copper tube at the position symmetrical to their semicircular notches.

10. The automatic nut-sleeving mechanism for pipe fittings according to claim 1, characterized in that: The positioning clamping component and the sleeve nut component are mounted on the same bottom plate.

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