Welding and positioning device for lock rod and lock head of container

Abstract

The utility model relates to a container lock rod and lock head welding positioning device which comprises a lock rod conveying mechanism, a lock head positioning mechanism and a welding mechanism, and the lock rod conveying mechanism is sequentially provided with a feeding station, a first assembling station, a second assembling station and a discharging station. The lock rod conveying mechanism is used for sequentially transferring lock rods from the feeding station to the discharging station. Lock head positioning mechanisms are arranged on the two opposite sides of the lock rod conveying mechanism correspondingly, one lock head positioning mechanism is used for installing a lock head to one end of the lock rod at the first assembly station, and the other lock head positioning mechanism is used for installing the lock head to the other end of the lock rod at the second assembly station. And a welding mechanism is arranged beside each lock head positioning mechanism, and the welding mechanisms are used for welding the assembled lock heads on the lock rods. The lock head and the lock rod can be assembled and welded through mechanical operation, and the working efficiency is high.

Description

Technical Field

[0001] The utility model relates to the assembly welding of a container lock rod and a lock head, and particularly relates to a welding positioning device for a lock rod and a lock head of a container. Background Art

[0002] The door lock structure of a container usually consists of a bracket, a handle, a lock rod, a lock head, a lock seat, etc. The lock head meshes with the lock seat, and the two ends of the lock rod are respectively installed with lock heads. In the prior art, the lock head is usually manually inserted at the end of the lock rod, and then manual welding operation is carried out. This traditional operation method has very low efficiency and high labor cost. Summary of the Utility Model

[0003] The utility model discloses a welding positioning device for a lock rod and a lock head of a container, which adopts an automatic operation mode to complete the assembly and welding operation of the lock head and the lock rod, helps to improve the operation efficiency and reduce the labor cost.

[0004] In order to achieve the above object, the technical solution adopted by the utility model is as follows:

[0005] A welding positioning device for a lock rod and a lock head of a container, comprising a lock rod conveying mechanism, a lock head positioning mechanism and a welding mechanism. The lock rod conveying mechanism is sequentially provided with a loading station, a first assembly station, a second assembly station and an unloading station. The lock rod conveying mechanism is used to transfer the lock rod from the loading station to the unloading station in sequence. Lock head positioning mechanisms are respectively arranged on two opposite sides of the lock rod conveying mechanism. One of the lock head positioning mechanisms installs the lock head at one end of the lock rod at the first assembly station, and the other lock head positioning mechanism installs the lock head at the other end of the lock rod at the second assembly station. A welding mechanism is arranged beside each lock head positioning mechanism, and the welding mechanism is used to weld the assembled lock head on the lock rod.

[0006] Further, the lock head positioning mechanism includes an installation frame and a lock head loading mechanism. A bottom plate is arranged on the installation frame. A slide rail is arranged on the bottom plate. A slider is arranged on the slide rail. The top of the slider is fixedly connected with a slide plate. A push plate is arranged at one end of the slide plate. A lock head limiting seat is arranged at the other end of the slide plate. The lock head limiting seat is located below the discharge port of the lock head loading mechanism. A cylinder fixing seat is arranged on the bottom plate. A pushing cylinder is installed on the cylinder fixing seat. The push rod of the pushing cylinder is fixedly connected with the push plate, and the pushing cylinder pushes the slide plate to move along the track.

[0007] Further, the lock head limiting seat includes a base plate, a first enclosing plate, a second enclosing plate, a third enclosing plate and a fourth enclosing plate. The base plate is fixed on the slide plate. The four enclosing plates are perpendicular to the base plate and enclose a rectangular cavity structure with an open top. The first enclosing plate is opposite to the third enclosing plate, the second enclosing plate is opposite to the fourth enclosing plate. The first enclosing plate is higher than the other three enclosing plates. The third enclosing plate is close to the material supporting seat, and the top surface of the third enclosing plate is provided with a concave arc surface.

[0008] Furthermore, a material supporting seat is provided beside the lock head limiting seat close to the first assembly station. A material supporting cylinder is provided below the material supporting seat. The bottom of the material supporting seat is fixedly connected to the push rod of the material supporting cylinder, and the material supporting cylinder pushes the material supporting seat to move up and down.

[0009] Furthermore, the top surface of the material supporting seat is provided with a concave arc surface.

[0010] Furthermore, the lock head feeding mechanism includes a fixed support, a feeding chute, and four discharging cylinders. The bottom of the fixed support is fixed on the installation bench. The top of the fixed support forms a feeding chute. Two discharging cylinders are respectively installed on both sides of the discharging port of the feeding chute. The feeding chute is used to accommodate a plurality of lock heads arranged in sequence. The feeding chute is inclined relative to the bottom plate. The discharging cylinders are used to block or release the lock heads in the feeding chute. Among them, the first discharging cylinder and the third discharging cylinder are arranged on the same side, the second discharging cylinder and the fourth discharging cylinder are arranged on the same side. The directions of the cylinder push rods of the first discharging cylinder and the third discharging cylinder are the same, the directions of the cylinder push rods of the second discharging cylinder and the fourth discharging cylinder are the same, and the cylinder push rod of the second discharging cylinder is perpendicular to the cylinder push rod of the first discharging cylinder.

[0011] Furthermore, a first connecting plate is provided at the top end of the fixed support. Two first fixing frames are fixedly installed on one side of the first connecting plate close to the discharging port. The second discharging cylinder and the fourth discharging cylinder are respectively installed on the two first fixing frames. At both ends of the other side of the first connecting plate, second fixing frames are respectively fixedly installed. The cross-section of the second fixing frame is a U-shaped structure with a lateral opening. The tops of the two second fixing frames are connected by a second connecting plate. The second connecting plate is opposite to the first connecting plate up and down and has a gap. The middle parts of the two second fixing frames are connected by a third connecting plate. Two third fixing frames are fixedly installed on the third connecting plate close to the discharging port. The first discharging cylinder and the third discharging cylinder are respectively installed on the two third fixing frames. A limiting plate with a bent structure is fixedly installed on the outer side surface of the second connecting plate. The feeding chute is formed by enclosing the limiting plate, the second connecting plate, the third connecting plate, the second fixing frame, and the first connecting plate.

[0012] Furthermore, the lock rod conveying mechanism includes a main body jig, a connecting rod assembly, and a driving mechanism. Push rod frames are respectively provided at the top ends of both ends of the main body jig. Four positioning bottom blocks are arranged at intervals and symmetrically on each push rod frame. The positioning bottom blocks are fixed on the push rod frame. A concave arc surface is formed at the top of each positioning bottom block. Each group of two opposite positioning bottom blocks on the two push rod frames on both sides constitutes a working station;

[0013] The connecting rod assembly is arranged in the inner cavity area enclosed by the main body jig. The connecting rod assembly includes a connecting rod bottom plate, a blanking rack, a connecting frame, and a rotating assembly. On two opposite sides of the connecting frame facing the pushing mechanism frame, a blanking rack is fixedly installed respectively. At the top of the blanking rack, a concave notch is formed corresponding to each positioning bottom block. Rotating assemblies are respectively provided at the four corners of the lower part of the connecting frame. A bearing seat is arranged on the outside of each rotating assembly. A transmission shaft is provided on the bearing seat, and a double-row sprocket is provided on the transmission shaft. One end of the rotating assembly is connected to the blanking rack, and the other end of the rotating assembly is connected to the transmission shaft. The bottom of the bearing seat is fixed on the connecting rod bottom plate;

[0014] The driving mechanism drives the double-row sprocket to rotate through a transmission chain. The double-row sprocket drives the rotating assembly to rotate, and the rotating assembly drives the blanking rack and the connecting frame to rotate in a plane perpendicular to the connecting rod bottom plate.

[0015] Furthermore, the rotating assembly includes a connecting rod. One end of the connecting rod is connected to the transmission shaft, and the other end of the connecting rod is provided with a fixed shaft. A bearing and a bearing fixing seat are provided on the blanking rack, and the other end of the fixed shaft is connected to the bearing.

[0016] Four working stations are arranged on the lock rod conveying mechanism of the present utility model. First, the lock rod is placed on the loading station and waits for the next operation. The lock rod at the loading station is transferred to the first assembly station by the rotating connecting rod assembly. Then, the lock head is automatically assembled to one end of the lock rod by the lock head positioning mechanism arranged beside the first assembly station. The welding operation of the lock head and the lock rod is completed by the welding mechanism beside the lock head positioning mechanism. Then, the connecting rod assembly is rotated again to transfer the lock rod at the first assembly station to the second device station. Another lock head is automatically assembled to the other end of the lock rod by the lock head positioning mechanism arranged beside the second assembly station. Then, the welding operation of the lock head and the lock rod is completed by the welding mechanism. Finally, the lock rod at the second assembly station is transferred to the unloading station by rotating the connecting rod assembly. For the lock rod at the unloading station, the assembly and welding of the lock head have been completed at both ends. The lock rod at the unloading station can be taken away by manual unloading, or a conveyor belt and a robotic arm can be arranged on one side of the unloading station, and the robotic arm is used to place the lock rod at the unloading station on the conveyor belt. The whole set of devices operates fully automatically without manual participation, and the work efficiency will be greatly improved. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the position arrangement of the welding positioning device for the lock rod and the lock head;

[0018] Figure 2 It is a schematic diagram of the structure of the lock head positioning mechanism;

[0019] Figure 3 It is a schematic diagram of the structure of the lock head;

[0020] Figure 4 It is a schematic structural diagram of the lock head feeding mechanism in the lock head positioning mechanism;

[0021] Figure 5 It is a schematic structural diagram of another perspective of the lock head feeding mechanism;

[0022] Figure 6 It is a schematic structural diagram of the lock rod conveying mechanism;

[0023] Figure 7 It is a schematic structural diagram of the connecting rod assembly;

[0024] Figure 8 It is a top view of the connecting rod assembly.

[0025] Explanation of the reference numerals in the attached drawings:

[0026] 1. Cylinder fixed seat; 2. Third fixed frame; 3. Lock rod; 4. Installation bench; 5. Propelling cylinder; 6. Base plate; 7. Slide rail; 8. Slide block; 9. Slide plate; 10. Pushing plate; 11. Push rod; 12. Limit seat; 13. Fixed bracket; 14. Supporting material cylinder; 15. Supporting material seat; 16. Lock head; 161. First fixed block; 162. Second fixed block; 163. Third fixed block; 164. Fourth fixed block; 165. Insertion rod; 166. Limit disc; 17. First discharging cylinder; 18. Second discharging cylinder; 19. First connecting plate; 20. First fixed frame; 21. Second fixed frame; 22. Second connecting plate; 23. Limit plate; 24. Third connecting plate; 25. Third discharging cylinder; 26. Fourth discharging cylinder;

[0027] 27. Main body jig; 28. Pushing mechanism frame; 29. Positioning bottom block; 30. Pushing material frame; 31. Connecting frame; 32. Bearing seat; 33. Rotating assembly; 331. Transmission shaft; 332. Connecting rod; 333. Fixed shaft; 334. Bearing and bearing fixed seat; 34. Double-row sprocket; 35. Connecting rod base plate. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0029] In this embodiment, for the assembly and welding operation of the lock rod and the lock head of the container, a welding positioning device is designed. The lock rod 3 is a hollow steel pipe, and a lock head 16 needs to be installed at each end of the lock rod 3. The structure of the lock head 16 is as Figure 3As shown in the figure, it includes a lock seat connecting part and an insertion rod 165. The insertion rod 165 is cylindrical and is used to be inserted into the lock rod. A limiting disc 166 with a diameter larger than the outer diameter of the insertion rod 165 is formed at the connection between the lock seat connecting part and the insertion rod 165. The lock seat connecting part includes a first fixing block 161 and a second fixing block 162 on the same side, and a third fixing block 163 and a fourth fixing block 164 on the other side. There is a gap between the first fixing block 161 and the second fixing block 162, and the two form a bifurcated structure. There is a gap between the third fixing block 163 and the fourth fixing block 164, and the two also form a bifurcated structure.

[0030] As Figure 1 shown, the whole welding device is composed of the arrangement of multiple mechanisms. In order to simplify the view and highlight the content of the innovative structure of the present utility model, the schematic diagrams of the welding mechanism, the driving mechanism, and the transmission chain are omitted in Figure 1 the figure, and a lock head positioning mechanism is also omitted. The whole welding device mainly consists of a lock rod conveying mechanism, two lock head positioning mechanisms, two welding devices, and a driving mechanism. Among them, the lock rod conveying mechanism is located in the middle. An upper feeding station, a first assembly station, a second assembly station, and a discharging station are sequentially arranged on the top of the lock rod conveying mechanism (taking Figure 1 the rightmost station as the upper feeding station). The lock rod conveying mechanism is used to transfer the lock rod 3 from the upper feeding station to the discharging station in sequence. A lock head positioning mechanism (i.e., the first lock head positioning mechanism) is arranged on one side of the lock rod conveying mechanism near the first assembly station, and a lock head positioning mechanism (i.e., the second lock head positioning mechanism) is arranged on the other side of the lock rod conveying mechanism near the second assembly station. A welding mechanism is arranged beside each lock head positioning mechanism. The first lock head positioning mechanism installs the lock head 16 at one end of the lock rod 3 at the first assembly station, and the second lock head positioning mechanism installs the lock head 16 at the other end of the lock rod 3 at the second assembly station.

[0031] As Figure 2 , Figure 4 and Figure 5 shown, the lock head positioning mechanism includes a mounting frame 4, a bottom plate 6, a slide rail 7, a propulsion cylinder 5, a slider 8, a slide plate 9, a lock head limiting seat 12, and a lock head feeding mechanism. Among them, the bottom plate 6 is fixedly installed on the top of the mounting frame 4. The slide rail 7 is arranged on the top surface of the bottom plate 6 along the length direction of the lock rod 3. The slider 8 is arranged on the slide rail 7, and the bottom of the slide plate 9 is fixedly connected to the slider 8. Taking Figure 2In the shown direction, a push plate 10 is vertically arranged at the left end of the skateboard 9. The push plate 10 is fixedly connected to the skateboard 9. A lock head limit seat 12 is arranged at the right end of the skateboard 9. A cylinder fixing seat 1 is arranged at the left end of the bottom plate 6. A propulsion cylinder 5 is installed on the cylinder fixing seat 1. The telescopic direction of the push rod 11 of the propulsion cylinder 5 is the same as the length direction of the lock rod 3. The end of the push rod 11 is fixedly connected to the push plate 10. The lock head limit seat 12 is used to receive the lock head 16 that falls from the discharge port of the feeding mechanism. In this embodiment, the limit seat 12 is mainly composed of a base plate at the bottom and four enclosing plates. The base plate is fixed on the skateboard 9. The four enclosing plates are perpendicular to the base plate and enclose a rectangular cavity structure with an open top, as Figure 2 shown. The four enclosing plates are divided into a first enclosing plate and a third enclosing plate which are oppositely arranged, and a second enclosing plate and a fourth enclosing plate which are oppositely arranged. Among them, the third enclosing plate is closest to the lock rod 3. The first enclosing plate is higher than the other three enclosing plates. The first enclosing plate is used to limit the lock seat connecting part of the lock head 16. The top surface of the third enclosing plate forms a concave arc surface. The third enclosing plate is used to support the limit disk 166 of the lock head 16. The first fixing block 161 and the second fixing block 162 of the lock head 16 are supported by the second enclosing plate. The third fixing block 163 and the fourth fixing block 164 of the lock head 16 are supported by the fourth enclosing plate. The insertion rod 165 of the lock head 16 faces the side of the lock rod 3.

[0032] A material supporting seat 15 for supporting the insertion rod 165 is also arranged beside the limit seat 12. The top of the material supporting seat 15 forms a concave arc structure. A material supporting cylinder 14 is arranged at the bottom of the material supporting seat 15. The material supporting cylinder 14 is fixedly installed on the side of the installation bench 4. The push rod of the material supporting cylinder 14 moves up and down telescopically. The push rod of the material supporting cylinder 14 is fixedly connected to the bottom of the material supporting seat 15. By moving the push rod of the material supporting cylinder 14 upward, the material supporting seat 15 is pushed to support the insertion rod 165 of the lock head 16 that has fallen into the limit seat 12.

[0033] The lock head feeding mechanism is as Figure 4 and Figure 5As shown in the figure, it mainly includes a fixed bracket 13, a feeding trough, and a discharging cylinder. The bottom end of the fixed bracket 13 is fixed on the mounting bench 4. The upper end of the fixed bracket 13 forms a feeding trough. The feeding trough has an inclination relative to the plane where the bottom plate 6 is located. The feeding trough is used to accommodate a plurality of lock heads 16 arranged in sequence. The inclined feeding trough facilitates the lock heads 16 to slide downward along the feeding trough under the action of gravity. Discharging cylinders are respectively arranged on both sides of the discharging port at the lower part of the feeding trough, and the discharging cylinders are used to block or release the lock heads 16 in the feeding trough. In this embodiment, a total of four discharging cylinders are provided, namely a first discharging cylinder 17, a second discharging cylinder 18, a third discharging cylinder 25, and a fourth discharging cylinder 26. Among them, the first discharging cylinder 17 and the third discharging cylinder 25 are arranged on the same side, the second discharging cylinder 18 and the fourth discharging cylinder 26 are arranged on the same side. The cylinder push rod directions of the first discharging cylinder 17 and the third discharging cylinder 25 are the same, and the cylinder push rod direction of the first discharging cylinder 17 is the same as the axis direction of the lock head 16. The cylinder push rod directions of the second discharging cylinder 18 and the fourth discharging cylinder 26 are the same, and the cylinder push rod of the second discharging cylinder 18 is perpendicular to the cylinder push rod of the first discharging cylinder 17.

[0034] The structure of the feeding trough needs to be designed according to the characteristics of the structure of the lock head 16. In this embodiment, the structure of the feeding trough is as Figure 5 shown. A first connecting plate 19 is obliquely arranged at the top end of the fixed bracket 13. Two first fixing brackets 20 are fixedly installed side by side on the left wall of the first connecting plate 19 near the discharging port of the feeding trough. The cross-section of the first fixing bracket 20 is Z-shaped. The second discharging cylinder 18 and the fourth discharging cylinder 26 are respectively installed on the two first fixing brackets 20. Second fixing brackets 21 are respectively fixedly installed at both ends on the right wall of the first connecting plate 19. The cross-section of the second fixing bracket 21 is generally a U-shaped structure with an opening to the left. A distance is left between the first connecting plate 19 and the second fixing bracket 21. The top bottom surfaces of the two second fixing brackets 21 are fixedly connected by a second connecting plate 22. The second connecting plate 22 is relatively upper and lower with the first connecting plate 19 and there is a gap between them. The middle parts of the two second fixing brackets 21 are fixedly connected by a third connecting plate 24. Two third fixing brackets 2 are fixedly installed on the third connecting plate 24 near the discharging port of the feeding trough. The first discharging cylinder 17 and the third discharging cylinder 25 are respectively installed on the two third fixing brackets 2. A limiting plate 23 with a bending structure is fixedly installed on the outer side surface of the second connecting plate 22. The feeding trough is jointly enclosed by the limiting plate 23, the second connecting plate 22, the third connecting plate 24, the second fixing bracket 21, and the first connecting plate 19.

[0035] The lock head 16 is inserted into the feeding port end of the feeding chute, so that the insertion rod 165 of the lock head 16 extends out from the open end of the feeding chute. The second connecting plate 22 and the first connecting plate 19 jointly limit the limiting plate 166 of the lock head 16, and the lock seat connecting part of the lock head 16 is limited in the inner cavity enclosed by the second connecting plate 22, the third connecting plate 24 and the first connecting plate 19. Among the many lock heads 16 arranged in the feeding chute, for the lock head 16 closest to the discharge port, its insertion rod 165 is limited by the push rod extended upward by the second discharging cylinder 18, and the fixing block of its lock seat connecting part is limited by the push rod extended by the first discharging cylinder 17, so that the lock head 16 will not slide down. Similarly, a lock head 16 arranged behind the lock head 16 closest to the discharge port is also jointly limited by the fourth discharging cylinder 26 and the third discharging cylinder 25 at the same time.

[0036] After the lock rod 3 is transferred from the feeding station to the first assembly station, the control system is started to retract the push rods of the first discharging cylinder 17 and the second discharging cylinder 18 at the same time. Under the action of gravity, the lock head 16 closest to the feeding chute naturally slides down and falls into the limiting seat 12 below the discharge port of the feeding chute. Then, the push rod of the material supporting cylinder 14 moves downward to pull the material supporting seat 15 back downward to make space for the assembly of the lock head 16 and the lock rod 3. Then, the control system drives the push rod 11 of the propulsion cylinder 5 to move in the direction close to the lock rod 3. The push rod 11 gradually moves the lock head 16 in the limiting seat 12 close to the end of the lock rod 3 until the insertion rod 165 of the lock head 16 is inserted into the lock rod 3 and stops. In order to prevent the position of the lock rod 3 at the assembly station from moving when assembling the lock head 16, a vertical limiting plate can be arranged at the other end corresponding to the assembly station to block the lock rod 3. For a lock head arranged behind the already-slid lock head 16 in the feeding chute, due to the limitation of the third discharging cylinder 25 and the fourth discharging cylinder 26, the remaining lock heads 16 arranged in the feeding chute will not slide down. After completing the assembly of the lock head 16 and the lock rod 3 once, all the above cylinders are reset. After the push rods of the first discharging cylinder 17 and the second discharging cylinder 18 are reset, the push rods of the third discharging cylinder 25 and the fourth discharging cylinder 26 are driven to retract, so that the arranged lock heads 16 move down one position in sequence, and then the push rods of the third discharging cylinder 25 and the fourth discharging cylinder 26 are made to extend again to wait for the next assembly instruction.

[0037] The lock rod conveying mechanism in this embodiment is as Figures 6 to 8As shown in the figure, it mainly includes a frame-type main jig 27 and a connecting rod assembly disposed in the inner cavity of the main jig 27. Among them, a pushing mechanism frame 28 is fixedly installed at the top of each side of the main jig 27 facing the locking head positioning mechanism. Four positioning bottom blocks 29 are arranged side by side and at intervals on each pushing mechanism frame 28. The bottom of the positioning bottom blocks 29 is fixed on the pushing mechanism frame 28, so that the positioning bottom blocks 29 between the two pushing mechanism frames 28 are opposite to each other in pairs. The top of the positioning bottom block 29 forms a concave arc surface. Each group of opposite positioning bottom blocks 29 constitutes a corresponding working station. When the locking rod 3 is placed on each working station, as Figure 6 shown, both ends of the locking rod 3 are respectively supported and limited by the arc-shaped concave surfaces of the two positioning bottom blocks 29.

[0038] The structure of the connecting rod assembly is as Figure 7 and Figure 8 shown, and mainly includes a connecting rod bottom plate 35, a blanking rack 30, a rectangular connecting frame 31, and four rotating assemblies 33. The connecting rod bottom plate 35 is fixed on the main jig 27. A bearing seat 32 is fixedly installed at each of the four corners of the connecting rod bottom plate 35. A bearing and a transmission shaft 331 are installed on the upper part of each bearing seat 32, and a double-row sprocket 34 is installed on the transmission shaft 331. The connecting frame 31 is suspended above the connecting rod bottom plate 35 and is located in the inner cavity surrounded by the four bearing seats 32. A blanking rack 30 is fixedly installed on the outer walls of the two opposite sides of the connecting frame 31. A concave notch is formed at the top of the blanking rack 30 corresponding to each positioning bottom block 29. Bearings and bearing fixing seats 334 are fixedly installed at both lower ends of the blanking rack 30. Each bearing seat 32 is opposite to the bearing and the bearing fixing seat 334, and a set of rotating assemblies 33 is provided between the two. The rotating assembly 33 includes a connecting rod 332. One end of the connecting rod 332 is hinged to the transmission shaft 331, and the other end of the connecting rod 332 is hinged to a fixed shaft 333. The other end of the fixed shaft 333 is connected to the bearing and the bearing fixing seat 334. The two double-row sprockets 34 on the same side are connected by a transmission chain. The driving mechanism drives the transmission chain through a motor gear set, and the connecting rod assembly can be driven by the transmission chain to rotate counterclockwise or clockwise in a vertical plane, so as to sequentially complete the lifting and position transfer of the locking rod 3 at the four working stations.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding positioning device for the locking rod and the lock head of a container, characterized in that: It includes a lock rod conveying mechanism, a lock head positioning mechanism and a welding mechanism. The lock rod conveying mechanism is sequentially provided with a feeding station, a first assembly station, a second assembly station and a discharging station. The lock rod conveying mechanism is used to transfer the lock rod from the feeding station to the discharging station in sequence. Lock head positioning mechanisms are respectively arranged on two opposite sides of the lock rod conveying mechanism. One of the lock head positioning mechanisms installs the lock head at one end of the lock rod at the first assembly station, and the other lock head positioning mechanism installs the lock head at the other end of the lock rod at the second assembly station. A welding mechanism is arranged beside each lock head positioning mechanism, and the welding mechanism is used to weld the assembled lock head on the lock rod.

2. A welding positioning device for a lock rod and a lock head of a container according to claim 1, characterized in that: The lock head positioning mechanism includes an installation bench and a lock head feeding mechanism. A bottom plate is arranged on the installation bench. A slide rail is arranged on the bottom plate, and a slider is arranged on the slide rail. The top of the slider is fixedly connected to a slide plate. A push plate is arranged at one end of the slide plate, and a lock head limiting seat is arranged at the other end of the slide plate. The lock head limiting seat is located below the discharge port of the lock head feeding mechanism. A cylinder fixing seat is arranged on the bottom plate, and a propulsion cylinder is installed on the cylinder fixing seat. The push rod of the propulsion cylinder is fixedly connected to the push plate, and the propulsion cylinder pushes the slide plate to move along the track.

3. A welding positioning device for a lock rod and a lock head of a container according to claim 2, characterized in that: The lock head limiting seat includes a base plate, a first enclosing plate, a second enclosing plate, a third enclosing plate and a fourth enclosing plate. The base plate is fixed on the slide plate. The four enclosing plates are perpendicular to the base plate and enclose a rectangular cavity structure with an open top. The first enclosing plate is opposite to the third enclosing plate, the second enclosing plate is opposite to the fourth enclosing plate. The first enclosing plate is higher than the other three enclosing plates. The third enclosing plate is close to the material supporting seat, and the top surface of the third enclosing plate is provided with a concave arc surface.

4. A welding positioning device for a lock rod and a lock head of a container according to claim 2, characterized in that: A material supporting seat is further arranged beside the lock head limiting seat close to the first assembly station. A material supporting cylinder is arranged below the material supporting seat. The bottom of the material supporting seat is fixedly connected to the push rod of the material supporting cylinder, and the material supporting cylinder pushes the material supporting seat to move up and down.

5. A welding positioning device for a lock rod and a lock head of a container according to claim 4, characterized in that: The top surface of the material supporting seat is provided with a concave arc surface.

6. The welding and positioning device for the lock rod and lock head of a container according to claim 2, characterized in that: The lock head feeding mechanism includes a fixed bracket, a feeding groove and four discharging cylinders. The bottom of the fixed bracket is fixed on the installation bench. The top of the fixed bracket forms a feeding groove. Two discharging cylinders are respectively installed on both sides of the discharge port of the feeding groove. The feeding groove is used to accommodate a plurality of lock heads arranged in sequence. The feeding groove is inclined relative to the bottom plate. The discharging cylinders are used to block or release the lock heads in the feeding groove. Among them, the first discharging cylinder and the third discharging cylinder are arranged on the same side, the second discharging cylinder and the fourth discharging cylinder are arranged on the same side. The cylinder push rod directions of the first discharging cylinder and the third discharging cylinder are the same. The cylinder push rod directions of the second discharging cylinder and the fourth discharging cylinder are the same. The cylinder push rod of the second discharging cylinder is perpendicular to the cylinder push rod of the first discharging cylinder.

7. A welding positioning device for a lock rod and a lock head of a container according to claim 6, characterized in that: The top end of the fixed support is provided with a first connecting plate. On one side of the first connecting plate, two first fixing frames are fixedly installed near the discharge port. A second discharging cylinder and a fourth discharging cylinder are respectively installed on the two first fixing frames. At the two ends of the other side of the first connecting plate, second fixing frames are respectively fixedly installed. The cross section of the second fixing frame is a U-shaped structure with a lateral opening. The tops of the two second fixing frames are connected by a second connecting plate. The second connecting plate is opposite to the first connecting plate vertically and there is a gap. The middle parts of the two second fixing frames are connected by a third connecting plate. Near the discharge port on the third connecting plate, two third fixing frames are fixedly installed. A first discharging cylinder and a third discharging cylinder are respectively installed on the two third fixing frames. A limiting plate with a bending structure is fixedly installed on the outer side surface of the second connecting plate. An inlet chute is formed by enclosing the limiting plate, the second connecting plate, the third connecting plate, the second fixing frame and the first connecting plate.

8. A welding positioning device for a lock rod and a lock head of a container according to claim 1, characterized in that: The lock rod conveying mechanism includes a main body support frame, a connecting rod assembly and a driving mechanism. At the top ends of both ends of the main body support frame, a pushing mechanism frame is respectively provided. On each side of the pushing mechanism frame, four positioning bottom blocks are arranged at intervals and symmetrically. The positioning bottom blocks are fixed on the pushing mechanism frame. A concave arc surface is formed at the top of each positioning bottom block. Each group of two opposite positioning bottom blocks on the two side pushing mechanism frames constitutes a working station. The connecting rod assembly is arranged in the inner cavity area enclosed by the main body support frame. The connecting rod assembly includes a connecting rod bottom plate, a blanking frame, a connecting frame and a rotating assembly. On the two opposite side surfaces of the connecting frame facing the pushing mechanism frame, a blanking frame is respectively fixedly installed. At the position corresponding to each positioning bottom block at the top of the blanking frame, a concave notch is respectively formed. Rotating assemblies are respectively arranged at the four corners of the lower part of the connecting frame. A bearing seat is arranged on the outer side of each rotating assembly. A transmission shaft is arranged on the bearing seat. A double-row sprocket is arranged on the transmission shaft. One end of the rotating assembly is connected to the blanking frame, and the other end of the rotating assembly is connected to the transmission shaft. The bottom of the bearing seat is fixed on the connecting rod bottom plate. The driving mechanism drives the double-row sprocket to rotate through a transmission chain. The double-row sprocket drives the rotating assembly to rotate. The rotating assembly drives the blanking frame and the connecting frame to rotate in a plane perpendicular to the connecting rod bottom plate.

9. A welding positioning device for a lock rod and a lock head of a container according to claim 8, characterized in that: The rotating assembly includes a connecting rod. One end of the connecting rod is connected to the transmission shaft, and the other end of the connecting rod is provided with a fixed shaft. A bearing and a bearing fixing seat are arranged on the blanking frame. The other end of the fixed shaft is connected to the bearing.

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