Automatic feeding device for metal pipe fittings and automatic production line

Abstract

The application discloses a kind of metal pipe fittings automatic feeding device and automatic production line, belong to metal pipe fittings processing technical field.Its device includes feeding frame, feed groove, poking mechanism, poking auxiliary mechanism, rotary material groove and discharge mechanism;Poking mechanism includes rotary plate, and there is poking gap on rotary plate, and poking gap is used to hook the front end of single pipe fittings and move towards rotary material groove;Poking auxiliary mechanism includes auxiliary poking rod, and auxiliary poking rod can be inserted between the pipe fittings being poked and feed groove and move backward, and single pipe fittings is poked into rotary material groove and drives pipe fittings to move backward and separate from poking gap;Rotary material groove rotates, and pipe fittings moves to discharge mechanism and is discharged.The application does not need artificial participation throughout the process to link coordination, realizes the continuous automatic feeding of metal pipe fittings, improves the feeding efficiency of pipe fittings, reduces the labor intensity and manpower cost, can match the processing rhythm of subsequent automatic processing equipment, guarantees pipe fittings overall processing efficiency stable promotion.

Description

Technical Field

[0001] This invention relates to an automatic feeding device and automated production line for metal pipe fittings, belonging to the field of metal pipe fitting processing technology. Background Technology

[0002] Metal pipe fittings, such as steel pipes, stainless steel pipes, copper pipes, aluminum pipes, and titanium pipes, are a widely used basic product for transporting media such as gases and liquids. After processing, some metal pipe fittings are not perfectly straight, and others have surface defects, resulting in inconsistent quality. Therefore, post-processing straightening and flaw detection are necessary to ensure the metal pipe fittings meet usage requirements. In the metal pipe fitting processing, material feeding is a crucial step, affecting not only the efficiency of subsequent processing but also the continuity and stability of the entire process.

[0003] Currently, there are two methods for feeding metal pipe fittings: manual and automatic. Manual feeding, or manual loading, is mostly used for small-batch metal pipe fittings of short length. However, manual feeding is costly, labor-intensive, and incompatible with the processing rhythm of subsequent automated equipment, affecting subsequent processing efficiency. The processing environment is also unpleasant, potentially harming workers' health over time and posing safety hazards. With the development of industrial automation technology, automated feeding equipment has gradually been introduced into the metal pipe fitting processing field. Compared to manual feeding, automatic feeding does improve the efficiency of metal pipe fitting feeding and reduces labor costs. However, existing automated feeding systems are not fully automated. In actual production, manual coordination and connection are often required, preventing continuous automated feeding of metal pipe fittings. Due to the limited collaborative capabilities between various components during feeding, the flow efficiency of metal pipe fitting production is low. Furthermore, the added human intervention further impacts product quality and production efficiency. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing an automatic feeding device for metal pipe fittings and an automated production line.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: An automatic feeding device for metal pipe fittings includes a feeding frame, and further includes a feeding trough, a feeding mechanism, a feeding auxiliary mechanism, a rotating trough, and a trough rotation mechanism for driving the rotating trough to rotate, all disposed on the feeding frame. The feeding frame is provided with a discharge mechanism on the discharge side. Under the action of the trough rotation mechanism, the rotating trough can rotate to the left to the intermediate receiving position for receiving materials and to the right to the intermediate discharge position for discharging materials. The feeding mechanism includes a rotating plate and a feeding drive mechanism for driving the rotating plate to rotate. The rotating plate is located in front of the feeding trough. The rotating plate is provided with a feeding notch adapted to the diameter of a single pipe. The feeding notch can hook the front end of the single pipe and drive it to be fed towards the rotating trough. The material feeding auxiliary mechanism is located between the feeding trough and the rotating material trough. The material feeding auxiliary mechanism includes at least one auxiliary lever and a lever conveying mechanism for driving the auxiliary lever to move along the length direction of the pipe. Under the action of the lever conveying mechanism, the auxiliary lever can extend into the feeding trough between the single pipe being fed and the feeding trough, and push the single pipe into the rotating material trough at the intermediate transfer position, and drive the single pipe to move backward and disengage from the feeding notch. The pipe fittings located in the rotating trough at the intermediate discharge position can be moved to the discharge mechanism and moved forward to discharge under the action of the discharge mechanism.

[0006] The beneficial effects of this invention are as follows: the feeding trough contains the pipe fittings to be processed, and the feeding mechanism, in conjunction with the feeding auxiliary mechanism, can stably separate a single pipe fitting and feed it into the rotating trough. Then, the rotating trough mechanism drives the rotating trough to rotate and complete the pipe fitting discharge. The entire process requires no manual intervention or coordination, enabling continuous automated feeding of metal pipe fittings. This effectively improves the collaborative operation capability between various components, increases the feeding efficiency of pipe fittings, reduces the intensity of manual labor and labor costs, avoids the impact of human coordination on product quality and production efficiency, reduces the risk of workers being exposed to harsh environments, eliminates the safety hazards of manual feeding, and can perfectly match the processing rhythm of subsequent automated processing equipment, ensuring a stable improvement in overall processing efficiency.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, it also includes a storage mechanism disposed on the feeding side of the feeding frame. The storage mechanism includes a pipe storage rack for storing multiple pipes to be processed. The pipe storage rack includes a pipe feeding part. The bearing surface of the pipe feeding part is inclined with the inner side higher than the outer side. The feeding frame is also provided with a receiving groove. The pipes on the pipe feeding part can roll into the receiving groove. It also includes a lifting mechanism for lifting and moving the pipes in the receiving groove into the feeding groove.

[0009] The advantages of adopting the above-mentioned further solution are that the pipe fitting storage rack can store nearly a hundred metal pipe fittings, enabling automatic feeding of large quantities of metal pipe fittings. Depending on the pipe diameter, the feeding trough can accommodate multiple metal pipe fittings, such as about six. The inclined bearing surface of the pipe fitting feeding section allows the pipe fittings to roll automatically and orderly towards the receiving trough under gravity. Once a pipe fitting in the receiving trough is lifted into the feeding trough, the pipe fitting storage rack can automatically replenish the metal pipe fittings, and the receiving trough can maintain continuous receiving without the need for manual pre-placing of pipe fittings one by one into the feeding trough. Inside, because there are hundreds of pipes on the pipe storage rack, the accumulation of pipes will exert force on the lower pipes. Directly moving a single pipe may not be possible. Therefore, a receiving trough and a feeding trough are set up. First, the lifting mechanism lifts the lower pipes in the receiving trough and sends them to the feeding trough. Then, the pipes in the feeding trough are moved one by one. This ensures the quality of automated feeding of metal pipes, which can significantly reduce the frequency of manual replenishment, further reduce the degree of manual intervention, increase the continuous operation time of the feeding device, make the continuity of automated feeding better, and effectively improve the overall feeding efficiency.

[0010] Furthermore, the lifting mechanism includes multiple lifting units and a lifting drive mechanism for driving the multiple lifting units to lift synchronously. Each lifting unit includes a lifting frame and a lifting block slidably mounted on the lifting frame. The lifting drive mechanism includes a lifting shaft, multiple lifting gears mounted on the lifting shaft, a lifting rack meshing with the lifting gears, and a lifting power mechanism for driving the lifting shaft to rotate. The lifting block is provided with the lifting rack. The lifting shaft is rotatably mounted on the loading frame and / or the lifting frame. The receiving groove is provided with a lifting slot hole through which the lifting block passes.

[0011] The beneficial effects of adopting the above-mentioned further solution are that when the lifting power mechanism is activated, the lifting shaft rotates, which drives multiple lifting gears to rotate synchronously, thereby driving the meshing lifting racks to rise and fall synchronously. This ensures that the lifting actions of all lifting blocks are consistent, and can smoothly lift the pipes in the receiving groove, avoiding tilting and jamming during the lifting process. At the same time, the lifting blocks only extend out of the receiving groove through the lifting slot hole to complete the lifting action, without obstructing the normal receiving of materials in the receiving groove or the replenishment of pipes. The overall structure is compact, the transmission stability is good, and it can stably realize the batch lifting and conveying of low-position pipes, ensuring the continuous and reliable operation of the loading action.

[0012] Furthermore, the lever conveying mechanism includes a driving pulley, a driven pulley, a synchronous belt surrounding the driving pulley and the driven pulley, and a lever drive motor for driving the driving pulley to rotate. The lever drive motor is mounted on the feeding frame, and the auxiliary lever is vertically mounted on the synchronous belt.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the rod drive motor drives the active pulley to rotate, which in turn drives the synchronous belt to perform closed-loop circulation motion, driving the auxiliary lever to move stably along the axial direction of the pipe. When the synchronous belt is running, the vertically set auxiliary lever can straighten the pipe from the front end to the rear end. Under the action of the auxiliary lever, the middle and rear parts of the pipe move towards the rotating material trough and are conveyed backward under the action of the auxiliary lever. The front end of the pipe disengages from the turning notch on the rotating plate. After the material separation, the single pipe is smoothly moved to the rotating material trough. The synchronous belt conveying action is continuous and stable. Each time the vertical auxiliary lever rotates to the top, it can coordinate with the rhythm of the material turning mechanism to realize the orderly turning and conveying of the single pipe, ensuring smooth connection of the feeding process.

[0014] Furthermore, the discharge mechanism includes a discharge frame, a receiving container mounted on the discharge frame, and a clamping and feeding mechanism. The receiving container is located on the discharge side of the rotating trough and is used to receive the pipes rotated out by the rotating trough. The clamping and feeding mechanism includes grippers, a clamping cylinder that drives the grippers to clamp or release the pipes, and a feeding cylinder that drives the clamping cylinder to move back and forth. The receiving container is provided with an active elongated hole through which the grippers pass.

[0015] The advantages of adopting the above-mentioned further solution are that the receiving container can receive the pipes output from the rotating trough, collect and limit the pipes, and prevent the pipes from falling off the discharge end. In addition, the receiving container can be made of PVC material to avoid damaging the metal pipes during receiving. The clamping and feeding mechanism can accurately clamp a single pipe through the gripper, and then, in conjunction with the feeding cylinder, stably transport the front end of the pipe to the subsequent processing station. The movable elongated hole provides room for the reciprocating motion of the gripper, avoiding structural interference between the gripper's movement and the receiving container. This not only ensures the stability of the output of a single pipe, but also matches the cycle of subsequent processing, further improving the automation level of the feeding process, reducing the need for manual intervention, and improving the overall feeding efficiency.

[0016] Furthermore, the feeding drive mechanism includes a feeding shaft and a feeding power mechanism for driving the feeding shaft to rotate. The feeding shaft is rotatably mounted on the feeding frame. The rotating plate has a fan-shaped structure, and the rotation fulcrum of the rotating plate is connected to the feeding shaft.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the rotation amplitude of the fan-shaped rotating plate is adapted to the material feeding operation space. It can complete the feeding and separation of a single pipe by occupying only a limited area above the receiving groove, without interfering with the subsequent pipes to be processed above. By driving the feeding shaft to rotate through the feeding power mechanism, the rotating plate can be driven to swing back and forth. Each swing feeds out only one metal pipe. The feeding action is stable, and the rhythm of feeding a single pipe can be controlled to ensure that the feeding process is carried out in an orderly manner.

[0018] Furthermore, the trough rotation mechanism includes at least one trough rotation unit, the trough rotation unit includes a trough rotating seat and a trough drive cylinder for driving the trough rotating seat to rotate, the trough rotating seat is disposed at the bottom of the rotating trough, the trough rotating seat is provided with a trough rotating shaft, the trough rotating shaft is rotatably disposed on the feeding frame, the trough drive cylinder is hinged to the feeding frame, and the piston rod of the trough drive cylinder is hinged to the trough rotating seat.

[0019] The beneficial effects of adopting the above-mentioned further solution are that, through the extension and retraction of the material trough drive cylinder, the material trough rotating seat can be driven to rotate around the material trough shaft, thereby driving the entire rotating material trough to rotate. When the rotating material trough rotates towards the feeding side, it can smoothly receive the pipe fittings from the feeding trough. When the rotating material trough rotates towards the discharging side, it can transfer the pipe fittings in the rotating material trough to the receiving container of the discharging mechanism, quickly completing the feeding and output of a single pipe fitting. With the continuous replenishment and lifting of the receiving trough, it can ensure the continuous and automated operation of the entire feeding process of metal pipe fittings. The feeding action is smooth and controllable, the structure is simple and reliable, and it is easy to install and maintain.

[0020] This invention also relates to an automated production line for metal pipe fittings, including the automatic feeding device for metal pipe fittings as described above, a straightening device, and a flaw detection device. The straightening device is located in front of the automatic feeding device for metal pipe fittings. The automatic feeding device for metal pipe fittings is used to automatically feed the pipe fittings and transport them to the straightening device. The straightening device is used to straighten the pipe fittings. A first conveying device is provided between the straightening device and the flaw detection device. The first conveying device is used to receive the straightened pipe fittings and transport them to the flaw detection device. The flaw detection device is used to detect the surface quality of the straightened pipe fittings. A second conveying device is also provided in front of the flaw detection device. The second conveying device is used to receive and transport the flaw-detected pipe fittings.

[0021] The beneficial effects of this invention are as follows: By using an automatic feeding device to replace manual feeding, the orderly and continuous feeding of metal pipe fittings can be achieved continuously and stably, effectively improving the automation level of the metal pipe fitting feeding process, reducing the safety hazards of manual operation, ensuring the continuous and smooth operation of the feeding operation, and in conjunction with subsequent straightening and flaw detection processes, the fully automated continuous operation of metal pipe fittings from feeding to sorting and quality inspection can be realized, realizing the fully automated operation of the entire process of metal pipe fittings from automatic feeding to processing, further improving the overall automation level of production, improving the overall efficiency and stability of metal pipe fitting processing and production, and reducing the labor costs of production.

[0022] Furthermore, it also includes a material distribution device, which is arranged laterally on the discharge side of the second conveying device. The material distribution device is used to transport abnormal pipe fittings to the abnormal pipe fittings storage area and to transport qualified pipe fittings to the qualified pipe fittings area.

[0023] The beneficial effects of adopting the above-mentioned further solution are that the material sorting device can directly sort and distinguish abnormal pipes and qualified pipes after the straightening and flaw detection of metal pipes, avoiding abnormal pipes from flowing into subsequent processing steps, ensuring the continuous and stable operation of the entire production line, reducing downtime due to failures in subsequent processes, further improving the operating efficiency of metal pipes, and reducing the processing costs of subsequent processing steps.

[0024] Furthermore, the conveying frame of the second conveying device is provided with a top material mechanism and a discharge guide plate. The top material mechanism includes multiple top material plates and a top material cylinder for driving the top material plates to lift and lower. The top material surface of the top material plate is inclined with the inside higher than the outside. The guide surface of the discharge guide plate is inclined with the inside higher than the outside. The abnormal pipe storage area is located on the discharge side of the second conveying device. The material distribution device is located above the abnormal pipe storage area. The material distribution device includes a material distribution shaft, multiple material distribution shaft arms disposed on the material distribution shaft, and a material distribution drive mechanism for driving the material distribution shaft to rotate. Under the action of the material distribution drive mechanism, the material distribution shaft arms can be vertically retracted and horizontally extended as the material distribution shaft rotates.

[0025] The beneficial effect of adopting the above-mentioned further solution is that the abnormal pipe fitting can enter the abnormal pipe fitting storage area when the material distribution shaft arm is vertically retracted, and the qualified pipe fitting can smoothly pass through the abnormal pipe fitting storage area and enter the qualified pipe fitting area under the guidance of the material distribution shaft arm when the material distribution shaft arm is horizontally extended. The pipe fittings inspected in the flaw detection process include abnormal and qualified pipe fittings. If the discharged pipe fitting is abnormal, it is raised under the action of the top plate. Under the action of the top surface of the top plate and the guiding surface of the discharge guide plate, the pipe fitting is horizontally discharged into the material distribution device. The material distribution shaft arm is vertically retracted under the action of the material distribution drive mechanism, and the abnormal pipe fitting will smoothly enter the abnormal pipe fitting storage area. If the discharged pipe fitting is qualified, the material distribution shaft arm is horizontally extended under the action of the material distribution drive mechanism, and the qualified pipe fitting can smoothly move onto the material distribution shaft arm after horizontal discharge, and smoothly pass through the abnormal pipe fitting storage area from above under the action of the material distribution shaft arm to enter the subsequent qualified pipe fitting area. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the automatic feeding device of the present invention; Figure 2 This is a schematic diagram of the main structure of the automatic feeding device of the present invention; Figure 3 This is a rear view structural diagram of the automatic feeding device of the present invention; Figure 4 This is a three-dimensional structural diagram of the components on the feeding frame and discharging frame of the present invention, showing their angles. Figure 5This is a three-dimensional structural diagram of the components on the feeding frame and discharging frame of the present invention, taken from angle two. Figure 6 This is a schematic diagram of the lifting mechanism of the present invention; Figure 7 This is a schematic diagram of the angle of the lever conveying mechanism of the present invention; Figure 8 This is a schematic diagram of angle two of the lever conveying mechanism of the present invention; Figure 9 This is a schematic diagram of the structure of the discharge mechanism of the present invention at angle one; Figure 10 This is a schematic diagram of the material discharge mechanism at angle two of the present invention; Figure 11 This is a three-dimensional structural diagram of the automatic feeding device of the present invention; Figure 12 This is a schematic diagram of the automated production line of the present invention; Figure 13 for Figure 12 A magnified view of the lower part of the image; Figure 14 for Figure 12 A magnified view of the middle section; Figure 15 for Figure 12 A magnified view of the upper part of the image; Figure 16 This is a schematic diagram of the structure of the first conveying device, the flaw detection device, and the second conveying device of the present invention; Figure 17 This is a schematic diagram of the structure of the second conveying device, the material dispensing device, and the third conveying device of the present invention; Figure 18 for Figure 17 Front view structural diagram; Figure 19 This is a schematic diagram of the cutting device, the fourth conveying device, and the finished pipe fitting storage area of ​​the present invention; In the diagram, 100 is the automatic feeding device; 101 is the feeding frame; 102 is the feeding trough; 103 is the receiving trough; 104 is the rotating trough; 105 is the rotating plate; 1051 is the actuating notch; 106 is the auxiliary lever; 107 is the pipe fitting storage rack; 1071 is the pipe fitting feeding section; 108 is the lifting frame; 109 is the lifting block; 110 is the lifting shaft; 111 is the lifting gear; and 112 is the lifting gear. 113. Lifting rack; 114. Lifting power mechanism; 115. Material feeding shaft; 116. Material feeding power mechanism; 117. Driving pulley; 118. Synchronous belt; 119. Rod drive motor; 120. Material trough rotary seat; 121. Material trough drive cylinder; 122. Discharge frame; 123. Receiving container; 124. Gripper; 125. Clamping cylinder; 126. Feeding cylinder; 1 27. Receiving guide plate; 128. Receiving baffle plate; 129. Material blocking limit block; 200. Straightening device; 300. Flaw detection device; 400. Material distribution device; 401. Material distribution shaft; 402. Material distribution shaft arm; 403. Material distribution drive cylinder; 500. Cutting device; 600. Abnormal pipe fitting storage area; 700. Transition conveying mechanism; 701. Transition conveying frame; 702. Transition shaft; 703. Material tray; 7031. Material feeding slot; 704. Transition power mechanism; 801. First conveying device; 802. Second conveying device; 803. Third conveying device; 804. Fourth conveying device; 805. Conveying roller; 806. Top plate; 807. Discharge guide plate; 808. Spacing frame; 809. Lifting plate; 810. Discharge guide plate; 900. Finished pipe fitting storage area. Detailed Implementation

[0027] The principles and features of the present invention are described below with reference to examples. The examples are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0028] like Figures 1-11 As shown, an automatic metal pipe feeding device 100 includes a feeding frame 101, and further includes a feeding trough 102, a feeding mechanism, a feeding auxiliary mechanism, a rotating trough 104, and a trough rotation mechanism for driving the rotating trough 104 to rotate, all disposed on the feeding frame 101. The feeding frame 101 is provided with a discharge mechanism on its discharge side. The feeding trough 102 accommodates the pipes to be processed, and the rotating trough 104, under the action of the trough rotation mechanism, can rotate to the left to the intermediate receiving position for receiving materials and to the right to the intermediate discharge position for discharging materials. The feeding mechanism includes a rotating plate 105 and a feeding drive mechanism for driving the rotating plate 105 to rotate. The rotating plate 105 is located in front of the feeding trough 102. The rotating plate 105 is provided with a feeding notch 1051 that is adapted to the diameter of a single pipe. The feeding notch 1051 can hook the front end of a single pipe and drive it to be fed towards the rotating trough 104. The material-feeding auxiliary mechanism is located between the feeding trough 102 and the rotating trough 104. The material-feeding auxiliary mechanism includes at least one auxiliary lever 106 and a lever conveying mechanism for driving the auxiliary lever 106 to move along the length of the pipe. Under the action of the lever conveying mechanism, the auxiliary lever 106 can extend into the front of the single pipe being moved between the feeding trough 102 and the single pipe, move the single pipe into the rotating trough 104 at the intermediate transfer position, and drive the single pipe to move backward and disengage from the moving notch 1051. The pipe fittings located in the rotating trough 104 at the intermediate discharge position can be moved to the discharge mechanism and moved forward to discharge under the action of the discharge mechanism.

[0029] It also includes a storage mechanism disposed on the feeding side of the feeding frame 101. The storage mechanism includes a pipe storage rack 107 for storing multiple pipes to be processed. The pipe storage rack 107 includes a pipe feeding part 1071. The bearing surface of the pipe feeding part 1071 is inclined with the inner side higher than the outer side. The feeding frame 101 is also provided with a receiving groove 103. The pipes on the pipe feeding part 1071 can roll into the receiving groove 103. It also includes a lifting mechanism for lifting and moving the pipes to be processed in the receiving groove 103 into the feeding groove 102.

[0030] Both the receiving trough 103 and the feeding trough 102 are V-shaped structures. The rotating trough 104 is also V-shaped. The V-shaped structure can adapt to pipes of different diameters, providing stable limiting support for the pipes and preventing them from rolling off or shifting. This ensures that the pipes are arranged in an orderly manner and eliminates the need to change the trough for different pipe diameters, thus improving the versatility of the automatic feeding device 100.

[0031] The receiving groove 103 and the feeding groove 102 can be an integrated double V-groove structure. This simplifies the installation process and ensures the relative positional accuracy of the receiving groove 103 and the feeding groove 102, preventing the relative positional misalignment from affecting the pipe loading operation. This makes the transfer process of the pipe from the receiving groove 103 to the feeding groove 102 smoother and further improves the stability of the loading operation.

[0032] The lifting mechanism includes multiple lifting units and a lifting drive mechanism for driving the multiple lifting units to lift synchronously. Each lifting unit includes a lifting frame 108 and a lifting block 109 slidably disposed on the lifting frame 108. The lifting drive mechanism includes a lifting shaft 110, multiple lifting gears 111 disposed on the lifting shaft 110, a lifting rack 112 meshing with the lifting gears 111, and a lifting power mechanism 113 for driving the lifting shaft 110 to rotate. The lifting block 109 is provided with the lifting rack 112. The lifting shaft 110 is rotatably disposed on the loading frame 101 and / or the lifting frame 108. The receiving groove 103 is provided with a lifting slot hole through which the lifting block 109 passes.

[0033] The lifting power mechanism 113 can be a lifting motor or a lifting rotary cylinder.

[0034] The lever conveying mechanism includes a driving pulley 116, a driven pulley 117, a synchronous belt 118 surrounding the driving pulley 116 and the driven pulley 117, and a lever drive motor 119 for driving the driving pulley 116 to rotate. The lever drive motor 119 is mounted on the feeding frame 101, and the auxiliary lever 106 is vertically mounted on the synchronous belt 118. The lever-driven motor 119 drives the active pulley 116 to rotate, which in turn drives the synchronous belt 118 to perform closed-loop circulation. This causes the auxiliary lever 106 to move stably along the axial direction of the pipe. When the synchronous belt 118 is running, the vertically set auxiliary lever 106 can straighten the pipe from the front end to the rear end. Under the action of the auxiliary lever 106, the middle and rear parts of the pipe move towards the rotating material trough 104 and are conveyed backward under the action of the auxiliary lever 106. The front end of the pipe disengages from the actuation notch 1051 on the rotating plate 105, and the single pipe after material separation is smoothly moved to the rotating material trough 104. The conveying action of the synchronous belt 118 is continuous and stable. Each time the vertical auxiliary lever 106 rotates to the top, it can coordinate with the rhythm of the material feeding mechanism to realize the orderly actuation and conveying of the single pipe, ensuring smooth connection of the feeding process.

[0035] The material feeding drive mechanism includes a material feeding shaft 114 and a material feeding power mechanism 115 for driving the material feeding shaft 114 to rotate. The material feeding shaft 114 is rotatably mounted on the feeding frame 101. The rotating plate 105 has a fan-shaped structure, and the rotation fulcrum of the rotating plate 105 is connected to the material feeding shaft 114. The feeding notch 1051 is set on the arc surface of the fan-shaped structure. The rotation amplitude of the fan-shaped rotating plate 105 is adapted to the material feeding operation space. It can complete the feeding and separation of a single pipe by occupying only a limited area above the receiving groove 103, without interfering with the subsequent pipes to be processed above. By driving the material feeding shaft 114 to rotate through the material feeding power mechanism 115, the rotating plate 105 can be driven to swing back and forth. Each swing feeds out only one metal pipe. The feeding action is stable and can control the rhythm of feeding a single pipe, ensuring that the feeding process is carried out in an orderly manner. The feeding shaft 114 can be mounted on the feeding frame 101 via a bearing seat. The feeding shaft 114 rotates under the action of the feeding power mechanism 115, and the rotating plate 105 rotates with the feeding shaft 114. The feeding power mechanism 115 can be a feeding motor or a feeding rotary cylinder.

[0036] The trough rotation mechanism includes at least one trough rotation unit, which includes a trough rotating seat 120 and a trough drive cylinder 121 for driving the trough rotating seat 120 to rotate. The trough rotating seat 120 is disposed at the bottom of the rotating trough 104. A trough rotating shaft is provided on the trough rotating seat 120, and the trough rotating shaft is rotatably disposed on the feeding frame 101. The trough drive cylinder 121 is hinged to the feeding frame 101, and the piston rod of the trough drive cylinder 121 is hinged to the trough rotating seat 120. The trough rotating shaft can be disposed on the feeding frame 101 through a bearing seat to meet the rotation requirements of the trough rotating shaft. The telescopic movement of the feed trough drive cylinder 121 drives the feed trough rotating seat 120 to rotate around the feed trough shaft, thereby driving the rotating feed trough 104 to rotate as a whole. The rotating feed trough 104 rotates towards the feeding side to smoothly receive the pipe fittings from the feed trough 102. The rotating feed trough 104 rotates towards the discharging side to transfer the pipe fittings in the rotating feed trough 104 to the receiving container 123 of the discharging mechanism, quickly completing the feeding and output of a single pipe fitting. With the continuous replenishment and lifting of the receiving trough 103, the entire feeding process of metal pipe fittings can be guaranteed to operate continuously and automatically. The feeding action is smooth and controllable, the structure is simple and reliable, and it is easy to install and maintain.

[0037] The front end of the pipe fitting is hooked by the actuation notch 1051 and is pushed towards the rotating trough 104 under the action of the rotating plate 105. A toggle space is created between the front end of the pipe fitting and the feeding trough 102 for the insertion of the auxiliary lever 106. The auxiliary lever 106 is moved from the lower return section to the upper bearing section by the synchronous belt 118 under the action of the lever drive motor 119. The free end of the auxiliary lever 106 can be inserted into the toggle space between the pipe fitting and the feeding trough 102. As the auxiliary lever 106 moves backward, it straightens the pipe fitting. Under the action of the auxiliary lever 106, the pipe fitting is completely moved out of the feeding trough 102. The auxiliary lever 106 has the function of pushing the rear of the pipe fitting towards the rotating trough 104. While straightening the pipe fitting, it can also drive the pipe fitting to move backward and disengage from the actuation notch 1051, thereby ensuring that the single pipe fitting on the feeding trough 102 is smoothly moved to the rotating trough 104 in the intermediate transfer position.

[0038] The discharge mechanism includes a discharge frame 122, a receiving container 123 disposed on the discharge frame 122, and a clamping and feeding mechanism. The receiving container 123 is located on the discharge side of the rotating material trough 104 and is used to receive the pipes rotated out by the rotating material trough 104. The clamping and feeding mechanism includes a gripper 124, a clamping cylinder 125 that drives the gripper 124 to clamp or release the pipes, and a feeding cylinder 126 that drives the clamping cylinder 125 to move back and forth. The receiving container 123 is provided with an active elongated hole through which the gripper 124 passes. The receiving container 123 can receive the pipes output from the rotating trough 104, collect and limit the pipes to prevent them from falling off the discharge end. In addition, the receiving container 123 can be made of PVC material to avoid damaging the metal pipes during receiving. The clamping and feeding mechanism can accurately clamp a single pipe through the gripper 124, and then, in conjunction with the feeding cylinder 126, stably transport the front end of the pipe to the subsequent processing station. The movable elongated hole provides room for the reciprocating motion of the gripper 124, avoiding structural interference between the gripper 124 and the receiving container 123. This ensures the stability of the single pipe output and matches the cycle of subsequent processing, further improving the automation of the feeding process, reducing the need for manual intervention, and improving the overall feeding efficiency.

[0039] The feeding cylinder 126 is mounted on the discharge frame 122. The piston rod of the feeding cylinder 126 is connected to the clamping cylinder 125 via a mounting plate. The discharge frame 122 is provided with a feeding guide rail, and the mounting plate is provided with a feeding slider adapted to the feeding guide rail. The feeding cylinder 126 drives the clamping cylinder 125 to move as a whole via the mounting plate. The cooperation between the feeding guide rail and the feeding slider can guide and limit the forward and backward movement of the gripper 124, preventing the gripper 124 from deviating or shaking during the feeding process, further improving the positional accuracy of the pipe fitting forward feeding and enhancing the stability of subsequent processing.

[0040] The system also includes a receiving guide plate 127 and a receiving baffle 128 for guiding and limiting the pipe fittings. The guiding surface of the receiving guide plate 127 is inclined, and a guiding channel leading to the receiving container 123 is formed between the receiving guide plate 127 and the receiving baffle 128. The receiving guide plate 127 and the receiving baffle 128 are both mounted on the discharge frame 122. The inclined receiving guide plate 127 can utilize the weight of the pipe fittings to allow the pipe fittings that have completed the transfer to automatically slide into the guiding channel along the guiding surface. In conjunction with the blocking and limiting action of the receiving baffle 128, the sliding posture of the pipe fittings can be regulated, allowing a single pipe fitting to smoothly enter the receiving container 123. This ensures that the clamping and feeding mechanism can stably clamp a single pipe fitting each time, further improving the smoothness of the pipe fitting feeding action, reducing the occurrence of jamming failures, and ensuring the continuous operation of the automatic feeding operation.

[0041] The feeding frame 101 is also equipped with a material stop and limiting block 129, which is located above the rotating plate 105. The material stop and limiting block 129 can limit the movement of the pipe by the rotating plate 105, ensuring that the pipe falls smoothly onto the rotating trough 104. When the rotating plate 105 rotates and moves a pipe into the rotating trough 104, the material stop and limiting block 129 above can limit the height of the moved pipe, further ensuring the stability of single pipe feeding and continuously guaranteeing the reliability of metal pipe feeding operations.

[0042] The automatic metal pipe feeding device 100 can be installed on an automated production line, which can continuously feed pipes to subsequent processing stations without the need for manual intervention in the pipe feeding and sorting process, effectively improving the automated processing efficiency of the entire metal pipe production line and reducing the safety risks of manual operation.

[0043] like Figures 12-19 As shown, the present invention also relates to an automated production line for metal pipe fittings, including the automatic metal pipe fitting feeding device 100 as described above, a straightening device 200, and a flaw detection device 300. The straightening device 200 is located in front of the automatic metal pipe fitting feeding device 100. The automatic metal pipe fitting feeding device 100 is used for automatically feeding pipe fittings and conveying them to the straightening device 200. The straightening device 200 is used for straightening the pipe fittings. A first conveying device 801 is provided between the straightening device 200 and the flaw detection device 300. The first conveying device 801 is used for receiving the straightened pipe fittings and conveying them to the flaw detection device 300. The flaw detection device 300 is used for detecting the surface quality of the straightened pipe fittings. A second conveying device 802 is also provided in front of the flaw detection device 300. The second conveying device 802 is used for receiving and conveying the flaw-detected pipe fittings.

[0044] The system also includes a material sorting device 400, which is horizontally positioned on the discharge side of the second conveying device 802. The material sorting device 400 is used to transport abnormal pipe fittings to the abnormal pipe fitting storage area 600 and to transport qualified pipe fittings to the qualified pipe fitting area. The material sorting device 400 can directly sort and differentiate between abnormal and qualified pipe fittings after straightening and flaw detection, preventing abnormal pipe fittings from flowing into subsequent processing steps, ensuring continuous and stable operation of the entire production line, reducing downtime in subsequent processes, further improving the operating efficiency of metal pipe fittings, and reducing the processing costs of subsequent processing steps.

[0045] The second conveying device 802 is provided with a top material mechanism and a discharge guide plate 807 on the conveying frame. The top material mechanism includes a plurality of top material plates 806 and a top material cylinder for driving the top material plates 806 to lift and lower. The top material surface of the top material plate 806 is inclined with the inner side higher than the outer side. The guide surface of the discharge guide plate 807 is inclined with the inner side higher than the outer side. The abnormal pipe storage area 600 is located on the discharge side of the second conveying device 802. The material distribution device 400 is located above the abnormal pipe fitting storage area 600. The material distribution device 400 includes a material distribution shaft 401, multiple material distribution shaft arms 402 mounted on the material distribution shaft 401, and a material distribution drive mechanism for driving the material distribution shaft 401 to rotate. Under the action of the material distribution drive mechanism, the material distribution shaft arms 402 can be vertically retracted and horizontally extended as the material distribution shaft 401 rotates. When the material distribution shaft arms 402 are vertically retracted, the abnormal pipe fittings can enter the abnormal pipe fitting storage area 600. When the material distribution shaft arms 402 are horizontally extended, the qualified pipe fittings can smoothly pass through the abnormal pipe fitting storage area 600 and enter the qualified pipe fitting area under the guidance of the material distribution shaft arms 402. The pipe fittings inspected during the flaw detection process include abnormal and qualified pipe fittings. If the discharged pipe fitting is abnormal, it is lifted by the top plate 806 and discharged laterally into the distribution device 400 under the action of the top surface of the top plate 806 and the guiding surface of the discharge guide plate 807. The distribution shaft arm 402 is vertically retracted under the action of the distribution drive mechanism, and the abnormal pipe fitting will smoothly enter the abnormal pipe fitting storage area 600. If the discharged pipe fitting is qualified, the distribution shaft arm 402 is horizontally extended under the action of the distribution drive mechanism, and the qualified pipe fitting can be smoothly moved onto the distribution shaft arm 402 after being discharged laterally. Under the action of the distribution shaft arm 402, it smoothly passes over the abnormal pipe fitting storage area 600 and enters the subsequent qualified pipe fitting area.

[0046] Multiple top plates 806 are mounted on a top beam, and the piston rod of the top cylinder is connected to the top beam to drive the top plates 806 to move up and down.

[0047] The material distribution shaft 401 is rotatably mounted on the conveyor frame of the second conveying device 802. Specifically, the material distribution shaft 401 can be connected to the conveyor frame of the second conveying device 802 through a bearing seat.

[0048] The material distribution drive mechanism includes a material distribution drive cylinder 403. The cylinder body of the material distribution drive cylinder 403 is hinged to the conveying frame of the second conveying device 802. A drive arm is provided on the material distribution shaft 401. The piston rod of the material distribution drive cylinder 403 is hinged to the drive arm.

[0049] The abnormal pipe fitting storage area 600 is provided with a second conveying device 802 on the inlet side, and the qualified pipe fitting area is provided with a third conveying device 803, which is located on the outlet side of the abnormal pipe fitting storage area 600.

[0050] The output end of the third conveying device 803 is sequentially provided with a cutting device 500 and a fourth conveying device 804. The cutting device 500 is used to cut qualified pipe fittings to obtain finished pipe fittings of the required length. The fourth conveying device 804 is provided with a distance fixing mechanism. The distance fixing mechanism includes a distance fixing frame 808 and a distance fixing sensor set on the distance fixing frame 808. The distance fixing frame 808 is adjustablely set on the conveying frame of the fourth conveying device 804.

[0051] The cutting device 500 is located behind the third conveying device 803, and the layout of each device is more compact, which can make better use of the space in the workshop.

[0052] The fourth conveying device 804 has a finished pipe storage area 900 on its discharge side and also includes a lifting mechanism for lifting the finished pipes. The lifting mechanism includes multiple lifting plates 809 and a lifting drive cylinder for driving the lifting plates 809 up and down. The top surface of the lifting plates 809 is inclined with an inner higher surface and an outer lower surface. The conveying frame of the fourth conveying device 804 is equipped with a discharge guide plate 810. The finished pipes lifted by the lifting plates 809 can be moved into the finished pipe storage area 900. The discharge guide plate 810 is inclined on the discharge side of the fourth conveying device 804. The inclined top surface of the lifting plates 809 cooperates with the discharge guide plate 810, allowing the lifted finished pipes to roll along the discharge guide plate 810 into the finished pipe storage area 900 by their own weight, eliminating the need for manual transfer and further improving the automation level of the production line.

[0053] The spacer frame 808 is equipped with a spacer cylinder and a spacer plate. The cylinder body of the spacer cylinder is mounted on the spacer frame 808, and the spacer plate is connected to the piston rod of the spacer cylinder. The spacer frame 808 is installed according to the required length of the pipe fitting. The pipe fitting is conveyed on the fourth conveying device 804. When its first end contacts the spacer plate, the cutting device 500 clamps the pipe fitting and cuts it to obtain a finished pipe fitting of the required length. After cutting, the spacer plate moves upward under the action of the spacer cylinder. The finished pipe fitting continues to be conveyed under the action of the conveying rollers 805 of the fourth conveying device 804. Then, under the action of the lifting mechanism and the discharge guide plate 810, the finished pipe fitting is moved to the finished pipe fitting storage area 900.

[0054] A transition conveying mechanism 700 is also provided between the third conveying device 803 and the abnormal pipe fitting storage area 600. The transition conveying mechanism 700 is located on the feeding side of the third conveying device 803. The transition conveying mechanism 700 includes a transition conveying frame 701, a transition shaft 702 rotatably mounted on the transition conveying frame 701, multiple trays 703 mounted on the transition shaft 702, and a transition power mechanism 704 for driving the transition shaft 702 to rotate. The bearing surface of the transition conveying frame 701 is inclined, and the trays 703 are provided with feeding slots 7031. The transition conveying mechanism 700 is used to convey qualified pipe fittings. Adding the transition conveying mechanism 700 can control the processing rhythm of the entire production line, making the connection between different processes smoother and more orderly. When the transition conveyor 701 receives a qualified pipe fitting from the previous process, the fitting falls into the feeding slot 7031 of the material tray 703. The transition conveyor motor or transition rotary cylinder drives the transition shaft 702 to rotate. The inclined bearing surface, in conjunction with the rotating material tray 703, stably conveys the fitting to the third conveyor device 803. Simultaneously, the rotation speed of the transition shaft 702 can be adjusted to flexibly adapt to the overall processing rhythm of the production line, ensuring the continuous and smooth operation of the entire production line. The transition power mechanism 704 can be a transition conveyor motor or a transition rotary cylinder.

[0055] The first conveying device 801, the second conveying device 802, the third conveying device 803 and the fourth conveying device 804 have the same structure.

[0056] The first conveying device 801, the second conveying device 802, the third conveying device 803, and the fourth conveying device 804 each include a conveying frame, multiple conveying rollers 805 mounted on the conveying frame, and a roller drive mechanism for driving the conveying rollers 805 to rotate. The multiple conveying rollers 805 are longitudinally distributed on the conveying frame. The pipe fittings are conveyed along their length by the friction between the conveying rollers 805 and the outer wall of the pipe fitting, resulting in low conveying resistance, high operational stability, and adaptability to the continuous conveying requirements of metal pipe fittings.

[0057] The conveying roller drive mechanism includes two transmission sprockets mounted on the conveying idler roller 805, a conveying roller drive motor mounted on the conveying frame, and a drive sprocket mounted on the output shaft of the conveying roller drive motor. The drive sprocket is connected to one of the transmission sprockets on one of the conveying idler rollers 805 via a drive chain, and adjacent conveying idler rollers 805 are connected by a transmission chain.

[0058] The straightening device 200, the flaw detection device 300, and the cutting device 500 can all be existing straightening equipment, flaw detection equipment, and cutting equipment capable of straightening, flaw detection, and cutting pipe fittings, which will not be described in detail here.

[0059] The automatic metal pipe feeding device 100, straightening device 200, flaw detection device 300, material distribution device 400, and cutting device 500 of the present invention are arranged according to the process route and work together. The automatic metal pipe feeding device 100 is used to continuously and accurately feed pipes to subsequent processes.

[0060] The pipe storage rack 107 has a downward slope on its discharge side, allowing pipes placed on it to roll automatically downwards under gravity. The receiving trough 103 has its inlet side in close contact with the pipe storage rack 107, allowing the pipes to roll smoothly into it. After the pipes roll from the storage rack 107 into the receiving trough 103, the first sensor on the receiving trough 103 is triggered, and the control system controls the lifting power mechanism 113 to operate. The lifting block 109 rises, lifting the pipes. The bearing surface of the lifting block 109 is inclined, with its inlet side higher than its discharge side. The pipes move into the feeding trough 102, where the second sensor is triggered. The control system controls the feeding power mechanism 115 to operate, driving the rotating plate 105 to rotate. The feeding notch 1051 on the rotating plate 105 can move the pipes located in the feeding trough 102... The pipe fitting inside is hooked and rotated out of the feed trough 102 in the opposite direction, and then rotated towards the rotating trough 104. Three vertically arranged auxiliary levers 106 are provided on the synchronous belt 118. The pipe fitting brought out by the rotating plate 105 is located above the synchronous belt 118. As the synchronous belt 118 runs, it drives the auxiliary levers 106 to move backward. The auxiliary levers 106 straighten the pipe fitting and convey it backward, causing the front end of the pipe fitting to disengage from the actuation notch 1051. The rotating trough 104 is now in the intermediate receiving position. The rotating trough 104 receives the pipe fitting actuated by the auxiliary levers 106. The rotating trough 104 rotates to the right, and the pipe fitting falls into the receiving container 123 under gravity. The clamping cylinder 125 actuates, and the pipe fitting is received. The pipe fitting inside container 123 is clamped by gripper 124. Feeding cylinder 126 actuates, causing gripper 124 to extend forward a certain distance, conveying the pipe fitting forward to straightening device 200. Straightening rollers in straightening device 200 straighten the pipe fitting and convey it forward in a straight line until it completely leaves straightening device 200. Under the action of first conveying device 801, the pipe fitting continues forward into flaw detection device 300. Flaw detection device 300 detects surface defects in the pipe fitting; defective fittings are considered abnormal, while defect-free fittings are considered qualified. After passing through flaw detection device 300, the pipe fitting is conveyed into second conveying device 802 until it completely detaches from the flaw detection device. After the flaw detection device 300 is activated, the top material cylinder is activated, and the top material plate 806 lifts the pipe. Under the action of the top material plate 806 and the discharge guide plate 807, the pipe smoothly enters the material distribution device 400. If the flaw detection device 300 detects a defect in the pipe, the material distribution shaft arm 402 rotates downward with the material distribution shaft 401 and retracts. The defective pipe will smoothly enter the defective pipe storage area 600 after passing the top material plate 806 and the discharge guide plate 807. If the flaw detection device 300 detects no abnormality in the pipe, the material distribution shaft arm 402 extends laterally, and the pipe smoothly passes through the material distribution shaft arm 402 and enters the subsequent cutting device 500. After the material distribution is completed, the material distribution shaft arm 402 resets and waits for the subsequent pipe.After passing through the material distribution device 400, the pipes enter the transition conveying mechanism 700. The material tray 703 can block and limit the pipes. Under the action of the transition conveying motor or the transition rotary cylinder, the material feeding slot 7031 of the material tray 703 drives the pipes to flip. The pipes are smoothly moved laterally along the inclined bearing surface on the transition conveying frame 701 to the third conveying device 803. The output end of the third conveying device 803 has a cutting device 500. The pipes are longitudinally conveyed on the third conveying device 803 and the fourth conveying device 804. The spacer 80 is installed according to the predetermined length. 8. When the first end of the pipe fitting contacts the spacer 808, the spacer sensor transmits a signal to the control system. The control system controls the cutting device 500 to clamp the pipe fitting to be cut and perform the cutting operation. The finished pipe fitting storage area 900 is located on the discharge side of the fourth conveying device 804. The cut pipe fitting is removed from the cutting device 500 under the action of the fourth conveying device 804. Then, under the action of the lifting mechanism, the lifting plate 809 lifts the cut pipe fitting, and the pipe fitting rolls to the finished pipe fitting storage area 900 via the lifting plate 809 and the discharge guide plate 810. Currently, the straightening, flaw detection, and cutting processes of metal pipe fittings are all completed step by step by independent equipment. The processes often rely on manual labor or auxiliary transfer, resulting in low production efficiency and high labor costs for metal pipe fittings. The automated production line for metal pipe fittings of this invention integrates an automatic feeding device 100, a straightening device 200, a flaw detection device 300, and a cutting device 500. Automatic transfer between processes is achieved through the conveying device between each device, eliminating the need for manual intervention in the transfer of pipe fittings between different processes. This not only effectively reduces labor costs but also significantly improves the overall production and processing efficiency of metal pipe fittings. At the same time, continuous automatic operation can also reduce the impact damage to the surface of the pipe fittings caused by manual transfer, ensuring the consistency of pipe fitting quality.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic feeding device for metal pipe fittings, comprising a feeding frame (101), characterized in that, It also includes a feeding trough (102), a feeding mechanism, a feeding auxiliary mechanism, a rotating trough (104), and a trough rotation mechanism for driving the rotating trough (104) to rotate, all mounted on the feeding frame (101). The feeding frame (101) is provided with a discharge mechanism on its discharge side. Under the action of the trough rotation mechanism, the rotating trough (104) can rotate to the left to the intermediate receiving position for receiving materials and to the right to the intermediate discharge position for discharging materials. The feeding mechanism includes a rotating plate (105) and a feeding drive mechanism for driving the rotating plate (105) to rotate. The rotating plate (105) is located in front of the feeding trough (102). The rotating plate (105) is provided with a feeding notch (1051) that is adapted to the diameter of a single pipe. The feeding notch (1051) can hook the front end of a single pipe and drive it to be fed towards the rotating trough (104). The material feeding auxiliary mechanism is located between the feeding trough (102) and the rotating trough (104). The material feeding auxiliary mechanism includes at least one auxiliary lever (106) and a lever conveying mechanism for driving the auxiliary lever (106) to move along the length direction of the pipe. Under the action of the lever conveying mechanism, the auxiliary lever (106) can extend into the feeding trough (102) between the single pipe being fed, and push the single pipe into the rotating trough (104) at the intermediate transfer position, and drive the single pipe to move backward and disengage from the feeding notch (1051). The pipe fitting located in the rotating trough (104) at the intermediate discharge position can be moved to the discharge mechanism and moved forward to discharge under the action of the discharge mechanism.

2. The automatic feeding device for metal pipe fittings according to claim 1, characterized in that, It also includes a storage mechanism disposed on the feeding side of the loading frame (101), the storage mechanism including a pipe storage rack (107) for storing multiple pipes to be processed, the pipe storage rack (107) including a pipe feeding part (1071), the bearing surface of the pipe feeding part (1071) being inclined with the inner side higher than the outer side, the loading frame (101) is also provided with a receiving groove (103), the pipes on the pipe feeding part (1071) can roll into the receiving groove (103); it also includes a lifting mechanism, the lifting mechanism being used to lift and move the pipes in the receiving groove (103) into the feeding groove (102).

3. The automatic feeding device for metal pipe fittings according to claim 2, characterized in that, The lifting mechanism includes multiple lifting units and a lifting drive mechanism for driving the multiple lifting units to lift synchronously. The lifting unit includes a lifting frame (108) and a lifting block (109) slidably disposed on the lifting frame (108). The lifting drive mechanism includes a lifting shaft (110), multiple lifting gears (111) disposed on the lifting shaft (110), a lifting rack (112) meshing with the lifting gears (111), and a lifting power mechanism (113) for driving the lifting shaft (110) to rotate. The lifting block (109) is provided with the lifting rack (112). The lifting shaft (110) is rotatably disposed on the loading frame (101) and / or the lifting frame (108). The receiving groove (103) is provided with a lifting slot hole through which the lifting block (109) passes.

4. The automatic feeding device for metal pipe fittings according to claim 2, characterized in that, The lever conveying mechanism includes a driving pulley (116), a driven pulley (117), a synchronous belt (118) surrounding the driving pulley (116) and the driven pulley (117), and a lever drive motor (119) for driving the driving pulley (116) to rotate. The lever drive motor (119) is mounted on the feeding frame (101), and the auxiliary lever (106) is vertically mounted on the synchronous belt (118).

5. The automatic feeding device for metal pipe fittings according to claim 4, characterized in that, The discharge mechanism includes a discharge frame (122), a receiving container (123) disposed on the discharge frame (122), and a clamping and feeding mechanism. The receiving container (123) is located on the discharge side of the rotating trough (104) and is used to receive the pipe fittings rotated out by the rotating trough (104). The clamping and feeding mechanism includes a jaw (124), a clamping cylinder (125) for driving the jaw (124) to clamp or release the pipe fittings, and a feeding cylinder (126) for driving the clamping cylinder (125) to move back and forth. The receiving container (123) is provided with an active elongated hole through which the jaw (124) passes.

6. The automatic feeding device for metal pipe fittings according to claim 1, characterized in that, The feeding drive mechanism includes a feeding shaft (114) and a feeding power mechanism (115) for driving the feeding shaft (114) to rotate. The feeding shaft (114) is rotatably mounted on the feeding frame (101). The rotating plate (105) has a fan-shaped structure, and the rotation fulcrum of the rotating plate (105) is connected to the feeding shaft (114).

7. The automatic feeding device for metal pipe fittings according to claim 1, characterized in that, The trough rotation mechanism includes at least one trough rotation unit, which includes a trough rotating seat (120) and a trough drive cylinder (121) for driving the trough rotating seat (120) to rotate. The trough rotating seat (120) is located at the bottom of the rotating trough (104). The trough rotating seat (120) is provided with a trough rotating shaft. The trough rotating shaft is rotatably mounted on the loading frame (101). The trough drive cylinder (121) is hinged to the loading frame (101). The piston rod of the trough drive cylinder (121) is hinged to the trough rotating seat (120).

8. An automated production line for metal pipe fittings, characterized in that, The device includes an automatic metal pipe feeding device (100) as described in any one of claims 1-7, and further includes a straightening device (200) and a flaw detection device (300). The straightening device (200) is located in front of the automatic metal pipe feeding device (100). The automatic metal pipe feeding device (100) is used to automatically feed the pipe and transport the pipe to the straightening device (200). The straightening device (200) is used to straighten the pipe. A first conveying device (801) is provided between the straightening device (200) and the flaw detection device (300). The first conveying device (801) is used to receive the straightened pipe and transport it to the flaw detection device (300). The flaw detection device (300) is used to detect the surface quality of the straightened pipe. A second conveying device (802) is also provided in front of the flaw detection device (300). The second conveying device (802) is used to receive and transport the flaw-detected pipe.

9. The automated production line for metal pipe fittings according to claim 8, characterized in that, It also includes a material distribution device (400), which is arranged laterally on the discharge side of the second conveying device (802). The material distribution device (400) is used to transport abnormal pipe fittings to the abnormal pipe fittings storage area (600) and to transport qualified pipe fittings to the qualified pipe fittings area.

10. The automated production line for metal pipe fittings according to claim 9, characterized in that, The second conveying device (802) is provided with a top material mechanism and a discharge guide plate (807) on its conveying frame. The top material mechanism includes multiple top material plates (806) and a top material cylinder for driving the top material plates (806) to lift and lower. The top material surface of the top material plate (806) is inclined with the inner side higher than the outer side. The guide surface of the discharge guide plate (807) is inclined with the inner side higher than the outer side. The abnormal pipe storage area (600) is located on the discharge side of the second conveying device (802). The material distribution device (400) is located above the abnormal pipe storage area (600). The material distribution device (400) includes a material distribution shaft (401), a plurality of material distribution shaft arms (402) arranged on the material distribution shaft (401), and a material distribution drive mechanism for driving the material distribution shaft (401) to rotate. Under the action of the material distribution drive mechanism, the material distribution shaft arms (402) can be vertically retracted and horizontally extended as the material distribution shaft (401) rotates.

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