Circular tube welding machine

Abstract

The invention provides a round pipe welding machine. The round pipe welding machine comprises a storage frame, a plurality of sets of discharging assemblies, a round pipe feeding assembly, a feeding power assembly, a feeding assembly, a material blocking assembly, a feeding power assembly, a pair of middle walking mechanisms, a fixed rotating frame assembly and a movable rotating frame assembly. Round pipes stored in the round pipe feeding assembly are moved to the side close to the feeding assembly, under the action of the material blocking assembly, only one pair of welded round pipes slides down to the feeding assembly each time, the pair of welded round pipes are conveyed and moved down to a welding station, the welded round pipes are clamped by four-claw clamping cutter heads at the two ends, and then welding is completed. The circular pipes are driven to move circumferentially, the spliced ends of the pair of circular pipes are welded, the circular pipes are ejected upwards after welding is completed, and the circular pipes fall onto a discharging assembly; in the whole circular pipe welding process, automatic feeding of the circular pipes is achieved through a mechanical structure, the automation degree is high, the manufacturing cost is lower compared with the cost of a mechanical arm, and the automatic feeding device is more suitable for application and popularization.

Description

Technical Field

[0001] The invention relates to the technical field of round tube welding, and in particular to a round tube welding machine. Background Art

[0002] In the process of engineering construction, it is usually necessary to weld two or more round tubes to form a pipe of suitable length. The welding of round tubes is usually carried out with the help of a round tube welding machine. During the welding process, two round tubes need to be loaded and sent to the welding position in the round tube welding machine. The existing round tube loading methods are generally two methods: robot grabbing and manual. The robot grabbing method has a high degree of automation, but because the round tube welding is a pair of round tubes for splicing and welding, it is usually necessary to configure a pair of robots. A pair of robots grabs a pair of round tubes to be welded and transfers them to the welding station. The cost of the robot is relatively high, which increases the manufacturing cost of the round tube welding equipment; and the manual loading method is relatively inefficient, and during the loading process, the operator needs to separately send the two round tubes to be welded to the welding station twice, which is time-consuming and labor-intensive, and the labor intensity of the operator is relatively high. Summary of the invention

[0003] In view of the defects existing in the prior art, the object of the present invention is to provide a round tube welding machine with high automation and low cost.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] The present application provides a round tube welding machine, which includes a storage rack, multiple groups of unloading components, a round tube feeding component, a feeding power component, a loading component, a blocking component, a loading power component, a pair of intermediate walking mechanisms, a fixed rotating frame component and a mobile rotating frame component. The feeding power component is connected to the round tube feeding component, and is used to drive a pair of round tubes placed on the round tube feeding component to move toward one side of the loading component. The loading component is arranged on one side of the output end of the round tube feeding component. The loading power component is connected to the loading component, and is used to drive the loading component to drive the round tube to move obliquely upward. The blocking component is arranged between the round tube feeding component and the loading component, and is used to limit the round tubes placed on the round tube component. The number of round tubes on the loading assembly enters the loading assembly, a pair of intermediate walking mechanisms are arranged on one side of the output end of the loading assembly, for receiving the round tubes output by the loading assembly, a pair of intermediate walking mechanisms are located between the fixed rotating frame assembly and the movable rotating frame assembly, the fixed rotating frame assembly and the movable rotating frame assembly are respectively provided with chucks for clamping the round tubes, the storage rack is arranged on the other side relative to the intermediate walking mechanism, the unloading assembly is arranged between the storage rack and the round tube feeding assembly, multiple groups of the unloading assemblies are evenly spaced along the axial direction parallel to the round tube, the unloading assembly cooperates with the intermediate walking mechanism, for automatically conveying the round tubes after welding to the storage rack for storage.

[0006] Furthermore, the feeding assembly includes a plurality of feeding mechanisms arranged at intervals in the transverse direction, each of the feeding mechanisms includes a vertical frame and a vertical chain, sprockets are respectively provided at the top and bottom ends of the frame, a pair of the sprockets are arranged diagonally, the vertical chain is installed between a pair of the sprockets, a pair of baffles extending upward are formed on the outer end surface of the vertical chain, the material blocking assembly includes a plurality of groups of material blocking mechanisms, an adjacent pair of the feeding mechanism brackets are installed with the material blocking mechanisms, the material blocking mechanisms include a material blocking bracket, a lifting drive mechanism, an upper material blocking tube, a lower material blocking tube, and a guide rod and a nut handwheel, one end of the material stop bracket is connected to the vertical frame to form a sliding connection, the lifting drive mechanism is connected to the material stop bracket, and is used to drive the material stop bracket to move up and down relative to the vertical frame. The upper material stop tube is hingedly mounted on the other end of the material stop bracket, and the upper material stop tube and the material stop bracket form a rotating connection that can be turned up and down. The lower material stop tube is arranged at the bottom end of the upper material stop tube through the guide rod, and the nut handwheel is mounted on the guide rod to drive the lower material stop tube to move up and down relative to the upper material stop tube.

[0007] Furthermore, the intermediate walking mechanism includes a walking frame, a fixed block, a moving block, a lifting drive device and an elevator. The lifting drive device is fixedly installed on the top surface of the walking frame. The fixed block is arranged above the lifting drive device. The lifting drive device is connected to the fixed block and is used to drive the fixed block to move up and down. The moving block is arranged on the other side of the fixed block. The moving block and the fixed block form a supporting structure with a "V"-shaped cross-section. The moving block and the fixed block form a lifting movement in the vertical direction. The elevator is connected to the moving block and is used to drive the moving block to move vertically up and down.

[0008] Furthermore, rollers are installed around the bottom end of the walking frame.

[0009] Furthermore, the feeding assembly includes a plurality of feeding mechanisms arranged at intervals along the transverse direction, each of the feeding mechanisms includes a vertical frame and a vertical chain, sprockets are respectively provided at the bottom and top ends of the vertical frame, the vertical chain is installed between a pair of the sprockets, and an outer end surface of the vertical chain is formed with a baffle extending upward.

[0010] Furthermore, the feeding power assembly includes a feeding motor, a reducer and a transmission shaft, the output shaft of the feeding motor is connected to the reducer, the reducer is connected to the transmission shaft, and the transmission shaft is fixedly connected to a sprocket located above the stand in each of the feeding mechanisms.

[0011] Furthermore, the round tube feeding assembly includes a plurality of groups of round tube feeding mechanisms arranged at intervals along the transverse direction, each of the round tube feeding mechanisms includes a conveying transmission frame, a pair of transmission sprockets and a chain, the pair of transmission sprockets are rotatably mounted on the conveying transmission frame at opposite ends parallel to the conveying direction of the round tube, the chain is mounted on the pair of transmission sprockets, and the feeding power assembly is fixedly connected to the transmission sprocket on one side.

[0012] Furthermore, the feed power assembly includes a feed motor, a feed reducer and a feed transmission shaft, the output shaft of the feed motor is connected to the feed reducer, the feed reducer is connected to the feed transmission shaft, and the feed transmission shaft is fixedly connected to the transmission sprocket on one side.

[0013] Furthermore, the installation height of one end of the conveying transmission frame away from the loading assembly is higher than that of the other end.

[0014] Furthermore, slots for the baffle to pass through are respectively provided at the bottom and top of the stand.

[0015] The beneficial effects of the present invention are as follows: the round tubes to be welded are stored in the round tube feeding assembly, and under the action of the power feeding assembly, the round tubes stored in the round tube feeding assembly are moved toward the side close to the loading assembly, and under the action of the blocking assembly, only one pair of round tubes to be welded slides down from the round tube feeding assembly into the loading assembly at a time, and the pair of round tubes to be welded are moved to the welding station for welding under the transportation of the loading assembly, and the four-claw clamping cutter discs at both ends clamp the welding round tubes and drive the round tubes to move in a circle, and at the same time, the welding is performed on the ends of the pair of round tubes that are spliced ​​together, and the entire system is controlled by a program, and after welding is completed, the round tubes are ejected upwards so that the round tubes fall onto the unloading assembly, and the round tubes after welding are transported to the storage assembly by the unloading assembly; in the entire round tube welding process, a mechanical structure is adopted to realize automatic feeding of the round tubes, with a high degree of automation, and the manufacturing cost is lower than that of using a manipulator, and is more suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the round tube welding machine in the embodiment of the present application.

[0017] Figure 2 It is a schematic diagram of the side view of the round tube welding machine in an embodiment of the present application.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the blanking component in the embodiment of the present application.

[0019] Figure 4 It is a schematic diagram of the side view structure of the round tube feeding assembly and the loading assembly in the embodiment of the present application.

[0020] Figure 5 It is a schematic diagram of the structural state of a round tube in an embodiment of the present application being loaded through a loading assembly.

[0021] Figure 6 It is a schematic diagram of the structural state of a round tube in an embodiment of the present application being loaded through a loading assembly (the material blocking assembly is flipped to a horizontal state).

[0022] Figure 7 It is a schematic diagram of the three-dimensional directional structure of the round tube feeding assembly and the loading assembly in the embodiment of the present application.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the circular tube feeding assembly in the embodiment of the present application.

[0024] Fig. 9 It is a structural schematic diagram of the coordination between the feeding assembly and the feeding power assembly in the embodiment of the present application.

[0025] Fig.10It is a schematic diagram of the structural state of the coordination among the intermediate walking mechanism, the fixed rotating frame assembly and the movable rotating frame assembly in the embodiment of the present application (the material blocking assembly is in the state of being flipped to an upright state).

[0026] Fig.11 It is a schematic diagram of the structural state of the coordination among the intermediate walking mechanism, the fixed rotating frame assembly and the movable rotating frame assembly in the embodiment of the present application (the material blocking assembly is in the flipped to horizontal state).

[0027] Fig.12 This is a schematic diagram of the structure in which the intermediate walking mechanism in an embodiment of the present application is installed on a base plate.

[0028] Fig.13 It is a schematic diagram of the three-dimensional structure of the intermediate walking mechanism in the embodiment of the present application.

[0029] In the figure:

[0030] 100-round tube welding machine, 200-round tube, 10-round tube feeding assembly, 11-round tube feeding mechanism, 111-transmission frame, 112-transmission sprocket, 113-chain, 12-feeding power assembly, 121-feeding motor, 122-feeding reducer, 123-feeding transmission shaft, 20-feeding assembly, 21-feeding mechanism, 211-stand, 212-stand chain, 213-sprocket, 214-baffle, 22-feeding power assembly, 221-feeding motor, 222-reducing Speed ​​machine, 223-transmission shaft, 30-material blocking assembly, 31-material blocking bracket, 32-upper material blocking tube, 33-lower material blocking tube, 34-guide rod, 35-nut handwheel, 40-unloading assembly, 41-column, 42-flip plate, 43-swing frame, 50-storage rack, 60-mobile rotating frame assembly, 70-fixed rotating frame assembly, 80-intermediate walking mechanism, 81-walking frame, 82-lifting drive device, 83-fixed block, 84-moving block, 85-lifting machine, 86-roller, 90-bottom plate. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] See attached Figure 1 To Attachment Fig.12 As shown, this embodiment provides a round tube welding machine 100, which includes a storage rack 50, multiple groups of unloading assemblies 40, a round tube feeding assembly 10, a feeding power assembly 12, a loading assembly 20, a blocking assembly 30, a loading power assembly 22, a pair of intermediate walking mechanisms 80, a fixed rotating frame assembly 70 and a movable rotating frame assembly 60.

[0033] See attached Figure 1 and attached Figure 2As shown, the storage rack 50 is arranged on the outer side of the base plate 90. The storage rack 50 is used to receive and store the pipes after welding. Along the width direction of the base plate 90, the unloading assembly 40, the round tube feeding assembly, the loading assembly and the intermediate walking mechanism 80 are arranged on the base plate 90, and the fixed rotating assembly and the movable rotating frame assembly 60 are arranged at the opposite ends of the other side of the base plate 90, that is, the fixed rotating assembly and the movable rotating frame assembly 60 are arranged at the two ends of a pair of intermediate walking mechanisms 80.

[0034] See attached Figure 4 To Attachment Figure 8 As shown, the round tube feeding assembly 10 includes a plurality of groups of round tube feeding mechanisms 11 arranged at intervals in the transverse direction, that is, the plurality of groups of round tube feeding mechanisms 11 are arranged at intervals in parallel to the axial direction of the round tube, and through the arrangement of the plurality of groups of round tube feeding mechanisms 11, a pair of round tubes can be discharged at one time. Each group of round tube feeding mechanisms 11 includes a conveying transmission frame 111, a pair of transmission sprockets 112 and a chain 113, and the conveying transmission frame 111 is arranged in an inclined manner, that is, one end away from the feeding assembly 20 is higher than the other end, so that along the conveying direction of the round tube, the conveying transmission frame 111 is installed in a gradually downwardly inclined manner, so that during the process of conveying the round tube outward, the round tube can automatically slide downward by its own gravity.

[0035] Continue to refer to the attached Figure 2 To Attachment Figure 8 As shown, a pair of transmission sprockets 112 are rotatably mounted on the conveying transmission frame 111 at opposite ends parallel to the conveying direction of the round tube, a chain 113 is mounted on the pair of transmission sprockets 112, and a feed power assembly 12 is fixedly connected to one side of the transmission sprocket 112. Specifically, the feed power assembly 12 includes a feed motor 121, a feed reducer 122, and a feed transmission shaft 123, the output shaft of the feed motor 121 is connected to the feed reducer 122, the feed reducer 122 is connected to the feed transmission shaft 123, and the feed transmission shaft 123 is fixedly connected to the one side of the transmission sprocket 112.

[0036] When the round tube is conveyed and discharged, the feed motor 121 drives the feed transmission shaft 123 to rotate through the reducer, and the feed transmission shaft 123 in a rotating state further drives the multiple sets of transmission sprockets 112 thereon to rotate, and the transmission sprockets 112 in a rotating state further drive the chain 113 connected thereto to rotate in a circle, and the chain 113 in a circular rotation further drives the round tube placed on the conveying transmission frame 111 to roll outward for output.

[0037] See attached Fig. 9 To Attachment Fig.11As shown, the feeding assembly 20 in this embodiment includes a plurality of feeding mechanisms 21 arranged at intervals in the transverse direction, and the plurality of feeding mechanisms 21 correspond to the plurality of round tube feeding mechanisms 11 one by one, that is, each round tube feeding mechanism 11 is correspondingly provided with a group of feeding mechanisms 21. Each group of feeding mechanisms 21 includes a stand 211 and a stand chain 212, the bottom and top ends of the stand 211 are respectively provided with sprockets 213, the stand chain 212 is installed between a pair of sprockets 213, that is, the stand chain 212 is arranged on the stand 211 in an obliquely upward manner, and the outer end surface of the stand chain 212 is formed with a baffle 214 extending upward, and the baffle 214 is provided for placing the round tube on the baffle 214 to prevent the round tube from falling off the stand chain 212.

[0038] See attached Figure 7 As shown, in order to prevent the baffle 214 from interfering with the stand 211 during the cyclic rotation of the stand chain 212, the stand 211 is formed with slots at the bottom and top ends thereof for the baffle 214 to pass through.

[0039] See attached Figure 6 and attached Fig. 9 As shown, the feeding power assembly 22 includes a feeding motor 221, a reducer 222 and a transmission shaft 223. The output shaft of the feeding motor 221 is connected to the reducer 222, the reducer 222 is connected to the transmission shaft 223, and the transmission shaft 223 is fixedly connected to the sprocket located above the stand 211 in each feeding mechanism 21.

[0040] When the loading component 20 drives the round tube to load, the loading motor 221 drives the transmission shaft 223 to rotate through the reducer 222, and the transmission shaft 223 in the rotating state drives the sprocket 213 installed above the vertical frame 211 to rotate, and the rotating sprocket 213 in turn drives the vertical chain 212 connected thereto to transmit, and the vertical chain 212 in turn drives the round tube placed thereon to move obliquely upward, thereby realizing the loading of the round tube.

[0041] See attached Figure 4 And attached Figure 6 As shown, the material blocking assembly 30 is disposed between the round tube feeding assembly 10 and the loading assembly 20 , and the function of the material blocking assembly 30 is to control the number of round tubes placed in the round tube feeding assembly 10 outputted outward at a single time.

[0042] Combined with reference to Fig.10 and attached Fig.11As shown, the material blocking mechanism includes a material blocking bracket 31, a lifting drive mechanism, an upper material blocking tube 32, a lower material blocking tube 33, a guide rod 34 and a nut handwheel 35. One end of the material blocking bracket 31 forms a vertical sliding connection with the stand, the lifting drive mechanism is connected to the material blocking bracket 31, and is used to drive the material blocking bracket 31 to move up and down relative to the stand, the upper material blocking tube 32 is hingedly mounted on the other end of the material blocking bracket 31, and the upper material blocking tube 32 and the material blocking bracket 31 form a rotating connection that can be turned up and down, the lower material blocking tube 33 is arranged at the bottom end of the upper material blocking tube 32 through the guide rod 34, and the nut handwheel 35 is installed on the guide rod 34, and is used to drive the lower material blocking tube 33 to move up and down relative to the upper material blocking tube 32.

[0043] When the round tube 200 is loaded, the round tube feeding mechanism 11 is activated, and a pair of round tubes 200 stored on the round tube feeding assembly 10 begins to be transported obliquely downward (see attached Fig.10 To Attachment Fig.11 At the same time, the blocking assembly 30 descends along the stand 211 and turns inward, so that the blocking assembly 30 is in a horizontal state, so that the feeding assembly 20 will not interfere with the blocking assembly 30 when driving the round tube 200 to be transported obliquely upward. The round tube 200 sliding downward from the round tube 200 feeding assembly enters the baffle 214 in the feeding assembly 20, and at the same time, the vertical chain 212 is transported obliquely upward along the stand 211, and the vertical chain 212 drives a pair of round tubes 200 placed at the baffle 214 to enter the top of the stand 211 (at the same time, the blocking assembly 30 rises and turns to a vertical position to block the round tube 200 placed on the round tube feeding assembly 10), and with the continued rotation of the vertical chain 212, the pair of round tubes at the top of the stand 211 fall into the subsequent welding position for welding, and the vertical chain 212 continues to rotate in a cycle, and the above steps are repeated.

[0044] When the material stopper 30 is in the upper position and the material stopper 32 is in the lower position, the material stopper 30 is in the lower position and the material stopper 32 is in the lower position, so that the material stopper 30 can be put into the feeding state, and the feeding state of the material stopper 30 is in the lower position and the material stopper 32 is in the lower position, so that the material stopper 30 can be put into the feeding state, and the feeding state of the material stopper 30 is in the lower position, so that the material stopper 30 can be put into the feeding state, and the feeding state of the material stopper 30 can be put into the feeding state, and the feeding state of the material stopper 30 can be put into the feeding state, so that the feeding state of the material stopper 30 is in the upper position and the material stopper 32 is in the lower position, so that the material stopper 30 can be put into the feeding state, and the feeding state of the material stopper 30 can be put into the feeding state, so that the feeding state of ...

[0045] See attached Figure 1 To Attachment Figure 3 As shown, the multiple groups of material discharging assemblies 40 in this embodiment are evenly spaced along the length direction of the bottom plate 90, that is, the multiple groups of material discharging assemblies 40 are arranged along the axial direction of the round tube. Each group of material discharging assemblies 40 includes a column 41 and a swing frame 43. The top ends of the column 41 are respectively hingedly mounted with a flap 42. The flap 42 and the top end of the column 41 form a rotatable connection that can be flipped up and down. The two sides of one end of the swing frame 43 are respectively fixedly mounted on the flap 42. In addition, the flaps 42 on the multiple groups of columns 41 are respectively fixedly connected to a flip shaft, and a flip motor is installed at the other end of the flip shaft. When in use, the flip motor is fixedly connected to the flip shaft, and the flip shaft in the flip state synchronously drives the swing frame 43 to rotate, so that one end of the swing frame 43 flips to the top of the intermediate walking mechanism 80. At this time, the swing frame 43 is arranged in an inclined state, that is, it is inclined downward from one end of the intermediate walking mechanism 80 to the side of the storage rack 50, so that the round pipe after welding can slide freely through the swing frame 43 into the storage rack 50, and the round pipe slides into place. The flip motor then drives the swing frame 43 to flip and reset in the opposite direction, and the cycle is repeated.

[0046] See attached Fig.12 and attached Fig.13 As shown, the intermediate walking mechanism 80 includes a walking frame 81, a fixed block 83, a moving block 84, a lifting drive device 82 and an elevator 85. The lifting drive device 82 is fixedly installed on the top surface of the walking frame, and the fixed block 83 is arranged above the lifting drive device 82. The lifting drive device 82 is connected to the fixed block 83 and is used to drive the fixed block 83 to move up and down. The moving block 84 is arranged on the other side of the fixed block 83. The moving block 84 and the fixed block 83 form a supporting structure with a "V"-shaped cross section. The moving block 84 and the fixed block 83 form a vertical lifting movement. The elevator 85 is connected to the moving block 84 and is used to drive the moving block 84 to move up and down vertically.

[0047] Continue to refer to the attached Fig.12 and attached Fig.13 As shown, in addition, in order to adapt to the processing of round tubes of different lengths, rollers 86 are provided at the bottom ends of the walking frame and the movable rotating frame assembly 60, so that the walking frame and the movable rotating frame assembly 60 can be adjusted according to the length of the round tube. The position of the walking frame and the movable rotating frame assembly 60 is adjusted to match the length of the processed round tube.

[0048] See attached Figure 1 To Attachment Figure 2 As shown, in order to better understand the round tube welding machine in this embodiment, its working principle is described below:

[0049] See attached Figure 3 and attached Figure 4As shown, the round tube feeding mechanism 11 is activated, and a pair of round tubes 200 stored on the round tube feeding assembly 10 begins to be transported obliquely downward (see the attached Figure 1 As shown), the blocking assembly 30 descends along the vertical frame 211 and flips inward, so that the blocking assembly 30 is in a horizontal state, so that when the loading assembly 20 drives the round tube 200 to be transported obliquely upward, the round tube 200 will not interfere with the blocking assembly 30. The round tube 200 sliding downward from the round tube 200 feeding assembly enters the baffle 214 in the loading assembly 20, and at the same time, the vertical chain 212 is transported obliquely upward along the vertical frame 211, and the vertical chain 212 drives a pair of round tubes 200 placed on the baffle 214 to enter the top of the vertical frame 211 (at the same time, the blocking assembly 30 rises and flips to a vertical position to block the round tube 200 placed on the round tube feeding assembly 10), and with the continued rotation of the vertical chain 212, the pair of round tubes at the top of the frame fall into the "V" surrounded by the fixed block 83 and the movable block 84 in the intermediate walking mechanism 80. In the ""-shaped support structure, the chucks located on the fixed rotating frame assembly 70 and the mobile rotating frame assembly 60 clamp the round tube, and at the same time, the round tube is driven to make a circular motion, and the external welding is welded to the joints of the round tube. The whole system is controlled by a program, and at the same time, one end of the swing frame 43 is turned to the top of the middle walking mechanism 80. After the welding is completed, the elevator 85 drives the moving block 84 to move upward, and the moving block 84 in the rising state pushes the round tube upward, and the round tube rolls onto the swing frame 43, and the round tube is transferred to the storage rack 50 through the swing frame 43. The above process is repeated for the next round tube, and so on.

[0050] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A round tube welding machine, characterized in that: The round tube welding machine includes a storage rack, multiple groups of unloading components, a round tube feeding component, a feeding power component, a loading component, a blocking component, a loading power component, a pair of intermediate walking mechanisms, a fixed rotating frame component and a mobile rotating frame component. The feeding power component is connected to the round tube feeding component, and is used to drive a pair of round tubes placed on the round tube feeding component to move toward one side of the loading component. The loading component is arranged on one side of the output end of the round tube feeding component. The loading power component is connected to the loading component, and is used to drive the loading component to drive the round tube to move obliquely upward. The blocking component is arranged between the round tube feeding component and the loading component, and is used to limit the round tube placed on the round tube component from entering The number of round tubes in the feeding assembly, a pair of the intermediate walking mechanisms are arranged on one side of the output end of the feeding assembly, for receiving the round tubes output by the feeding assembly, a pair of the intermediate walking mechanisms are located between the fixed rotating frame assembly and the movable rotating frame assembly, the fixed rotating frame assembly and the movable rotating frame assembly are respectively provided with chucks for clamping the round tubes, the storage rack is arranged on the other side relative to the intermediate walking mechanism, the unloading assembly is arranged between the storage rack and the round tube feeding assembly, multiple groups of the unloading assemblies are evenly spaced along the axial direction parallel to the round tube, the unloading assembly cooperates with the intermediate walking mechanism, and is used to automatically transport the round tubes after welding to the storage rack for storage.

2. A round tube welding machine according to claim 1, characterized in that: The feeding assembly includes a plurality of feeding mechanisms arranged at intervals in the transverse direction, each of the feeding mechanisms includes a vertical frame and a vertical chain, sprockets are respectively provided at the top and bottom ends of the frame, a pair of the sprockets are arranged diagonally, the vertical chain is installed between the pair of the sprockets, and a pair of baffles extending upward are formed on the outer end surface of the vertical chain, the material blocking assembly includes a plurality of groups of material blocking mechanisms, and the material blocking mechanisms are installed on adjacent pairs of the feeding mechanism brackets, and the material blocking mechanisms include a material blocking bracket, a lifting drive mechanism, an upper material blocking tube, a lower material blocking tube, a guide rod and a screw The nut handwheel is installed on the guide rod, and the nut handwheel is installed on the guide rod, and the lower material stop tube is driven by the guide rod to drive the lower material stop tube to move up and down relative to the upper material stop tube.

3. A round tube welding machine according to claim 1 or 2, characterized in that: The intermediate walking mechanism includes a walking frame, a fixed block, a moving block, a lifting drive device and a lift. The lifting drive device is fixedly installed on the top surface of the walking frame. The fixed block is arranged above the lifting drive device. The lifting drive device is connected to the fixed block and is used to drive the fixed block to move up and down. The moving block is arranged on the other side of the fixed block. The moving block and the fixed block form a supporting structure with a "V"-shaped cross-section. The moving block and the fixed block form a lifting movement in the vertical direction. The lift is connected to the moving block and is used to drive the moving block to move up and down vertically.

4. A round tube welding machine according to claim 3, characterized in that: Rollers are installed around the bottom end of the walking frame.

5. The round tube welding machine according to claim 1, characterized in that: The feeding assembly includes a plurality of feeding mechanisms arranged at intervals along the transverse direction, each of the feeding mechanisms includes a vertical frame and a vertical chain, sprockets are respectively provided at the bottom and top ends of the vertical frame, the vertical chain is installed between a pair of the sprockets, and an upwardly extending baffle is formed on the outer end surface of the vertical chain.

6. A round tube welding machine according to claim 1, characterized in that: The feeding power assembly includes a feeding motor, a reducer and a transmission shaft. The output shaft of the feeding motor is connected to the reducer, the reducer is connected to the transmission shaft, and the transmission shaft is fixedly connected to a sprocket located above the stand in each of the feeding mechanisms.

7. A round tube welding machine according to claim 1, characterized in that: The round tube feeding assembly includes a plurality of groups of round tube feeding mechanisms arranged at intervals along the transverse direction, each of the round tube feeding mechanisms includes a conveying transmission frame, a pair of transmission sprockets and a chain, the pair of transmission sprockets are rotatably mounted on the conveying transmission frame at opposite ends parallel to the conveying direction of the round tube, the chain is mounted on the pair of transmission sprockets, and the feeding power assembly is fixedly connected to the transmission sprocket on one side.

8. The round tube welding machine according to claim 1, characterized in that: The feeding power assembly includes a feeding motor, a feeding reducer and a feeding transmission shaft. The output shaft of the feeding motor is connected to the feeding reducer, the feeding reducer is connected to the feeding transmission shaft, and the feeding transmission shaft is fixedly connected to the transmission sprocket on one side.

9. A round tube welding machine according to claim 7, characterized in that: The installation height of one end of the conveying transmission frame away from the loading assembly is higher than that of the other end.

10. A round tube welding machine according to claim 2, characterized in that: The bottom end and the top end of the stand are respectively provided with slots for the baffle to pass through.

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