A multi-workpiece cycle type automated welding robot

Abstract

The present application belongs to the technical field of welding robots, and particularly relates to a multi-workpiece circulation type automatic welding robot, which comprises a robot main body, a connecting seat arranged on the robot main body, a welding torch arranged at the lower end of the connecting seat, and multiple protective plates arranged on the outer side of the connecting seat, wherein the multiple protective plates are unfolded to block the splashed welding slag; a power mechanism is arranged on the connecting seat and provides power for the opening of the protective plates; a filling mechanism is arranged in the protective plates and fills the gap between the adjacent protective plates after the opening of the protective plates; a cleaning mechanism is arranged on the side wall of the protective plates and cleans the side wall of the protective plates; and a transmission mechanism is arranged in the protective plates and provides the required power for the cleaning mechanism. The present application blocks the welding slag by arranging the protective plates which can be accommodated on the outer end of the welding torch, and protects the pipeline at the rear end of the welding torch and the movable joint.

Description

Technical Field

[0001] This invention belongs to the technical field of welding robots, specifically relating to a multi-workpiece cyclic automated welding robot. Background Technology

[0002] In factories, more and more workstations are being replaced by robots, and various types of robots have emerged, including welding robots. When in use, they are generally used in conjunction with conveyor lines. The workpiece is simply sent to the working range of the welding robot, and the welding of the workpiece can be carried out automatically. With the transport of the workpiece by the conveyor line, a closed-loop, cyclic, and other welding processes are formed.

[0003] When using existing welding robots, although the welding torch can move automatically in multiple directions, it is difficult to install a protective cover on the outside of the welding torch because it needs to be welded in conjunction with the conveyor line. As a result, there is a lack of slag shielding device. During the welding process, slag spatter is inevitable. Without shielding, the slag will fly directly into the pipes behind the welding torch or the gaps in the robot's movement area, affecting the use of the robot and reducing the service life of the pipes. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-workpiece cyclic automated welding robot, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A multi-workpiece cyclic automated welding robot includes a robot body, a connecting seat mounted on the robot body, a welding torch located at the lower end of the connecting seat, and multiple protective plates located on the outside of the connecting seat, the protective plates being deployed to block spattered welding slag; a power mechanism mounted on the connecting seat, providing power for opening the protective plates; a filling mechanism located within the protective plates, filling the gaps between adjacent protective plates after opening; a cleaning mechanism located on the sidewalls of the protective plates, cleaning the sidewalls of the protective plates; a transmission mechanism located within the protective plates, providing the necessary power for the cleaning mechanism; and a shortening mechanism located on the cleaning mechanism, preventing the cleaning mechanism from jamming.

[0006] As a preferred embodiment of the multi-workpiece cyclic automated welding robot of the present invention, the power mechanism includes a fixed ring fixedly connected to a connecting seat, an electric telescopic rod fixedly connected to the fixed ring, a movable ring with an inner diameter larger than that of the connecting seat fixedly connected to the telescopic end of the electric telescopic rod, multiple openings provided on both the movable ring and the fixed ring, and rotating shafts rotatably connected to each of the multiple openings, a connecting block fixedly connected to a protective plate fixedly connected to the lower end of the rotating shaft, a transmission plate fixedly connected to the upper end of the rotating shaft, a U-shaped block fixedly connected to the protective plate, a support shaft rotatably connected to the U-shaped block, and the support shaft rotatably connected to the lower end of the transmission plate.

[0007] As a preferred embodiment of the multi-workpiece cyclic automated welding robot of the present invention, the included angle between the connecting block and the connecting seat is not 0 when the protective plate is not unfolded.

[0008] As a preferred embodiment of the multi-workpiece cyclic automated welding robot of the present invention, the filling mechanism includes two opening slots disposed in the protective plate, and a fan-shaped plate is slidably connected in both opening slots. The fan-shaped plate is elastically connected to the inner wall of the opening slot by a first spring.

[0009] As a preferred embodiment of the multi-workpiece cyclic automated welding robot of the present invention, the cleaning mechanism includes a receiving cavity disposed within a protective plate, a sliding plate slidably connected within the receiving cavity, ventilation ports provided at both the upper and lower ends of the receiving cavity, a U-shaped rod fixedly connected to the sliding plate, an arc-shaped plate fixedly connected to the U-shaped rod and abutting against the side wall of the protective plate, and a first scraper fixedly connected to the arc-shaped plate.

[0010] As a preferred embodiment of the multi-workpiece cyclic automated welding robot of the present invention, the transmission mechanism includes a cross-shaped slot on the side wall of the protective plate, an arc groove on the fan-shaped plate, a movable block slidably connected in the slot, a lever that cooperates with the arc groove passing through and fixedly connected to the movable block, a guide opening passing through the protective plate on the receiving cavity, a steel wire rope fixed to the lever in the guide opening, the end of the steel wire rope being fixedly connected to the slide plate, and guide wheels that cooperate with the steel wire rope being provided on the receiving cavity and the side wall of the protective plate.

[0011] As a preferred embodiment of the multi-workpiece cyclic automated welding robot of the present invention, the distance between the arc-shaped groove and the connecting block increases sequentially along the counterclockwise direction of the sector plate, and the slide plate is elastically connected to the inner wall of the receiving cavity through a second spring.

[0012] As a preferred embodiment of the multi-workpiece cyclic automated welding robot of the present invention, the shortening mechanism includes two arc-shaped openings disposed on an arc-shaped plate, an extension plate slidably connected inside the arc-shaped openings, a second scraper fixedly connected to the extension plate, a T-shaped transmission cavity provided on the inner wall of the arc-shaped openings, a T-shaped connecting plate slidably connected through and sealed inside the transmission cavity, the connecting plate being fixedly connected to the extension plate, the connecting plate being elastically connected to the connecting plate by a third spring, and a pressure relief port provided inside the transmission cavity.

[0013] As a preferred embodiment of the multi-workpiece cyclic automated welding robot of the present invention, the arc plate is provided with a pumping component to provide power to the connecting plate; The pumping component includes an air vent on a U-shaped rod, the air vent passing through a sliding plate, a top rod fixedly connected inside the receiving cavity, a piston that cooperates with the top rod being slidably connected inside the air vent, and an air storage cavity that cooperates with the air vent on the arc plate, the air storage cavity being connected to the transmission cavity through an air distribution channel.

[0014] As a preferred embodiment of the multi-workpiece cyclic automated welding robot of the present invention, the length of the arc plate is greater than the sum of the lengths of the two extension plates.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up a power mechanism and protective plates, multiple protective plates can be deployed to form a protective barrier at the rear end of the welding robot's welding torch, preventing the impact of splattered welding slag. Furthermore, multiple protective plates can be retracted by extending the electric telescopic rod without affecting the movement of the welding torch. In addition, a filling mechanism is set up to automatically fill the gap between two adjacent protective plates after they are opened, resulting in a better shielding effect.

[0016] 2. By setting up a cleaning mechanism, during the process of retracting the fan-shaped plate, the first scraper can also be driven by transmission to scrape the side wall of the protective plate to remove the welding slag on the side wall of the protective plate, ensuring the shielding and adhesion effect of the protective plate (if there is a lot of welding slag on the protective plate, new welding slag will not be able to adhere to the side wall of the protective plate).

[0017] 3. By setting up a shortening mechanism, the extension plate can be automatically retracted when the first scraper cleans the protective plate, which avoids the arc plate getting stuck when cleaning the lower end of the protective plate due to the reduced space, thus ensuring stable cleaning. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the overall structure of a multi-workpiece cyclic automated welding robot; Figure 2 A schematic diagram of the external structure of the protective plate of a multi-workpiece cyclic automated welding robot; Figure 3 A schematic diagram of the unfolded structure of the sector plate of a multi-workpiece cyclic automated welding robot; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A; Figure 5 This is a schematic diagram of the cross-sectional structure of the protective plate when the sector plate is not unfolded, which is an embodiment of a multi-workpiece cyclic automated welding robot.

[0020] Figure 6 This is a cross-sectional view of the protective plate structure of Example 3 of a multi-workpiece cyclic automated welding robot.

[0021] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point B.

[0022] Figure 8 for Figure 6 A magnified schematic diagram of the structure at point C.

[0023] Figure 9 This is a schematic diagram of the cross-sectional structure of an arc plate for a multi-workpiece cyclic automated welding robot.

[0024] Figure 10 for Figure 9 A magnified schematic diagram of the structure at point D.

[0025] In the diagram: 11. Robot body; 12. Connecting seat; 13. Welding torch; 14. Protective plate; 21. Fixed ring; 22. Electric telescopic rod; 23. Moving ring; 24. Opening; 25. Rotating shaft; 26. Connecting block; 27. Transmission plate; 28. U-shaped block; 31. Opening slot; 32. Fan-shaped plate; 33. First spring; 41. Receiving cavity; 42. Slide plate; 43. U-shaped rod; 44. Arc plate; 45. First scraper; 51. Strip-shaped opening; 52. Arc-shaped groove; 53. Moving block; 54. Lever; 55. Steel wire rope; 56. Guide wheel; 57. Second spring; 61. Arc-shaped opening; 62. Extension plate; 63. Second scraper; 64. Transmission chamber; 65. Connecting plate; 66. Third spring; 67. Pressure relief port; 68. Pumping component; 681. Push rod; 682. Piston; 683. Air storage chamber; 684. Air distribution channel; 685. Vent. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Example 1

[0027] Reference Figure 1 - Figure 10 This is the first embodiment of the present invention, which provides a multi-workpiece circulating automated welding robot that achieves the effect of blocking spatter and protecting pipelines. It includes a robot body 11, a connecting seat 12 disposed on the robot body 11, a welding torch 13 disposed at the lower end of the connecting seat 12, and multiple protective plates 14 disposed on the outside of the connecting seat 12. The multiple protective plates 14 unfold to block spatter; a power mechanism disposed on the connecting seat 12 and providing power for opening the protective plates 14; a filling mechanism disposed within the protective plates 14 and filling the gaps between adjacent protective plates 14 after opening; a cleaning mechanism disposed on the sidewalls of the protective plates 14 and cleaning the sidewalls of the protective plates 14; a transmission mechanism disposed within the protective plates 14 and providing the necessary power for the cleaning mechanism; and a shortening mechanism disposed on the cleaning mechanism to prevent the cleaning mechanism from jamming.

[0028] Here, the robot body 11 is set outside the conveyor, which transports the workpieces to achieve a multi-workpiece cyclic welding effect. The conveyor here is existing technology and will not be described in detail here. The multiple protective plates 14 are first close to the connecting seat 12, but at this time they do not form protection, so as to carry out the maintenance or repair of the welding gun 13, and also to facilitate the movement of the robot body 11 arm.

[0029] Furthermore, the power mechanism includes a fixed ring 21 fixedly connected to the connecting seat 12, an electric telescopic rod 22 fixedly connected to the fixed ring 21, and a movable ring 23 with an inner diameter larger than that of the connecting seat 12 fixedly connected to the telescopic end of the electric telescopic rod 22. Both the movable ring 23 and the fixed ring 21 are provided with multiple openings 24, and a rotating shaft 25 is rotatably connected to each of the multiple openings 24. A connecting block 26 fixedly connected to the protective plate 14 is fixedly connected to the lower rotating shaft 25, and a transmission plate 27 is fixedly connected to the upper rotating shaft 25. A U-shaped block 28 is fixedly connected to the protective plate 14, and a support shaft is rotatably connected to the U-shaped block 28. The support shaft is rotatably connected to the lower end of the transmission plate 27. When the protective plate 14 is not unfolded, the included angle between the connecting block 26 and the connecting seat 12 is not 0.

[0030] When the protective plate 14 is not unfolded, the angle between the connecting block 26 and the connecting seat 12 is not 0, which can prevent the transmission plate 27 from being too vertical and causing the protective plate 14 to be unable to open. Here, the number of electric telescopic rods is greater than or equal to three, ensuring that there is enough power to drive the moving ring 23 to move. The electric telescopic rod 22 is set with an equal arc on the upper end face of the fixed ring 21. The electric telescopic rod 22 can be powered by a battery, a power supply, or wirelessly, depending on the actual situation. There is no limitation here. The power supply of the electric telescopic rod 22 is existing technology and will not be described in detail here.

[0031] Preferably, the filling mechanism includes two openings 24 slots disposed within the protective plate 14, each of which is slidably connected to a sector plate 32, which is elastically connected to the inner wall of the opening 24 slot via a first spring 33.

[0032] It should be noted that after the protective plate 14 is unfolded, there will be a gap between two adjacent protective plates 14. At this time, the sector plate 32 moves to fill the gap. It is worth noting that the sector plate 32 slides along the inner wall of the slot of the opening 24. When two adjacent sector plates 32 abut, the side walls of the two adjacent sector plates 32 do not abut, but this does not affect the shielding effect at all.

[0033] In the initial state of use, the electric telescopic rod 22 is in the extended state, the protective plate 14 is in the closed state, and the first spring 33 is in the compressed state. Since the side walls of two adjacent protective plates 14 abut each other, the fan-shaped plate 32 will not extend out of the opening 24 slot, which facilitates the maintenance and replacement of the welding torch 13. When the welding torch 13 is welding, the telescopic end of the electric telescopic rod 22 retracts, causing the moving ring 23 to move downward, driving the transmission plate 27 to move downward, and pushing the protective plate 14 to flip downward, forming a protection on the outside of the welding torch 13. When the protective plate 14 is unfolded, since there is a gap between two adjacent protective plates 14, the fan-shaped plate 32 moves outward under the action of the first spring 33. When the fan-shaped plates 32 on two adjacent protective plates 14 abut each other, a complete ring of protection is formed on the outside of the welding torch 13 to block and prevent the slag from falling onto the pipes connected to the welding torch 13 and the moving parts of the robot body 11, thus protecting the pipelines and the robot body 11. Example 2

[0034] Reference Figure 1 - Figure 8 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a cleaning mechanism for a multi-workpiece circulating automated welding robot, which solves the problem of how to automatically clean the side wall of the protective plate 14. It includes a receiving cavity 41 disposed in the protective plate 14, a sliding plate 42 slidably connected in the receiving cavity 41, and ventilation ports 685 provided at both the upper and lower ends of the receiving cavity 41. A U-shaped rod 43 is fixedly connected to the sliding plate 42, and an arc-shaped plate 44 that abuts against the side wall of the protective plate 14 is fixedly connected to the U-shaped rod 43. A first scraper 45 is fixedly connected to the arc-shaped plate 44. The first scraper 45 is inclined to scrape off the welding slag on the protective plate 14. The welding slag on the side wall of the protective plate 14 is mainly high-temperature solid particles that are splashed up and stick to the protective plate 14 due to rapid cooling. The vent 685 is designed to prevent the slide plate 42 from being unable to move due to air pressure issues during movement.

[0035] Specifically, the transmission mechanism includes a cross-shaped slot 51 on the side wall of the protective plate 14, an arc groove 52 on the fan-shaped plate 32, a movable block 53 slidably connected in the slot 51, a lever 54 that cooperates with the arc groove 52 passing through and fixedly connected to the movable block 53, a guide opening passing through the protective plate 14 on the receiving cavity 41, a steel wire rope 55 fixed to the lever 54 in the guide opening, the end of the steel wire rope 55 being fixedly connected to the slide plate 42, and guide wheels 56 that cooperate with the steel wire rope 55 on the side wall of the receiving cavity 41 and the protective plate 14; the distance between the arc groove 52 and the connecting block 26 increases sequentially in the counterclockwise direction of the fan-shaped plate 32, and the slide plate 42 is elastically connected to the inner wall of the receiving cavity 41 by a second spring 57.

[0036] It should be noted that the sliding block 53 slides within the cross-shaped slot 51, which can prevent the sliding block 53 from separating from the slot 51. The lever 54 passes through the sliding block 53. Rollers can also be installed on the inner wall of the slot 51 to reduce frictional resistance and ensure the sliding of the sliding block 53. The guide wheel 56 is provided to prevent the wire rope 55 from getting tangled.

[0037] In use, when cleaning of the protective plate 14 is required, the electric telescopic rod 22 extends to retract the protective plate 14. At this time, because the gap between two adjacent protective plates 14 becomes smaller, it pushes the sector plate 32 towards the groove of the opening 24. Since the distance between the arc groove 52 and the connecting block 26 increases sequentially along the counterclockwise direction of the sector plate 32, when the sector plate 32 resets, it drives the lever 54 to move away from the connecting block 26. This, in turn, drives the slide plate 42 towards the connecting block 26 via the wire rope 55, and drives the arc plate 44 towards the connecting block 26 via the U-shaped rod 43. Moving in the direction of connecting block 26, during the movement, the scraper scrapes the solid particles (also known as welding slag or splattered sparks) on the side wall of the protective plate 14 to clean the side wall of the protective plate 14. It is worth noting that when cleaning solid particles, the robot body 11 can move to move the connecting seat 12 to the outside of the workpiece to prevent the scraped welding slag from falling onto the workpiece. When the protective plate 14 is unfolded, the fan-shaped plate 32 unfolds. At this time, the U-shaped rod 43 is on the outside of the protective plate 14. At this time, an arc-shaped baffle can be placed between two adjacent U-shaped rods 43 to further increase the protection range. Example 3

[0038] Reference Figure 1 - Figure 10 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a shortening mechanism for a multi-workpiece circulating automated welding robot, which solves the problem of how to prevent the arc strip from getting stuck during movement. It includes two arc-shaped openings 61 set on the arc plate 44. An extension plate 62 is slidably connected in the arc-shaped openings 61. A second scraper 63 is fixedly connected to the extension plate 62. A T-shaped transmission cavity 64 is provided on the inner wall of the arc-shaped openings 61. A T-shaped connecting plate 65 is slidably connected through and sealed in the transmission cavity 64. The connecting plate 65 is fixedly connected to the extension plate 62. The connecting plate 65 is elastically connected to the extension plate 62 by a third spring 66. A pressure relief port 67 is provided in the transmission cavity 64.

[0039] Specifically, both the first scraper 45 and the second scraper 63 are inclined to better scrape off the welding slag on the side wall of the protective plate 14. The arc-shaped opening 61 is long enough to accommodate the extension plate 62. At the same time, the first scraper 45 is also provided on the side wall of the arc-shaped opening 61. When the extension plate 62 is retracted, the first scraper 45 on the arc-shaped opening 61 and the second scraper 63 on the extension plate 62 are in an upper and lower position relationship. The pressure relief port 67 is provided to prevent the connecting plate 65 from getting stuck due to air pressure issues when it moves.

[0040] Furthermore, the arc-shaped plate 44 is provided with a pumping component 68 that provides power to the connecting plate 65; the pumping component 68 includes a vent 685 disposed on the U-shaped rod 43, the vent 685 passing through the sliding plate 42, a push rod 681 fixedly connected in the receiving cavity 41, a piston 682 that cooperates with the push rod 681 being slidably connected in the vent 685, and an air storage cavity 683 that cooperates with the vent 685 is provided on the arc-shaped plate 44, the air storage cavity 683 being connected to the transmission cavity 64 through the air distribution channel 684; the length of the arc-shaped plate 44 is greater than the sum of the lengths of the two extension plates 62.

[0041] It should be noted that the push rod 681 is misaligned with the wire rope 55, preventing entanglement or obstruction. When the push rod 681 abuts against the piston 682, it pumps the gas from the vent 685 into the gas storage chamber 683. Two gas distribution channels 684 are provided here, each connected to the transmission chamber 64 at both ends of the arc-shaped plate 44. During use, as the fan-shaped plate 32 moves and drives the sliding plate 42 downward, the push rod 681 will also be inserted into the vent 685. As the sliding plate 42 moves downward, the piston 682 is pushed by the push rod 681, sending the gas in the vent 685 in the U-shaped rod 43 to the gas storage chamber 683. Then, it is pumped into the transmission chamber 64 through the gas distribution channel 684, driving the connecting plate 65 to move towards the transmission chamber 64. The extension plate 62 moves towards the arc-shaped opening 61 to be stored, preventing the phenomenon of two adjacent extension plates 62 getting stuck when the arc-shaped plate 44 moves along the side wall of the protective plate 14. It is worth noting that since the protective plate 14 is fan-shaped, the arc length of the lower end of the protective plate 14 is smaller than that of the upper end, so the extension plate 62 is needed to store it.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multi-workpiece cyclic automated welding robot, characterized in that: include, The robot body (11), the connecting seat (12) on the robot body (11), the welding gun (13) at the lower end of the connecting seat (12), and the multiple protective plates (14) on the outside of the connecting seat (12), the multiple protective plates (14) are unfolded to block the splashed welding slag; A power mechanism is provided on the connecting seat (12) and provides power for opening the protective plate (14); A filling mechanism is provided inside the protective plate (14) to fill the gap between adjacent protective plates (14) after the protective plate (14) is opened; A cleaning mechanism is installed on the side wall of the protective plate (14) to clean the side wall of the protective plate (14); The transmission mechanism, which is located inside the protective plate (14), provides the necessary power to the cleaning mechanism; The shortening mechanism, which is installed on the cleaning mechanism, prevents the cleaning mechanism from getting stuck.

2. The multi-workpiece cyclic automated welding robot according to claim 1, characterized in that: The power mechanism includes a fixed ring (21) fixedly connected to the connecting seat (12), an electric telescopic rod (22) fixedly connected to the fixed ring (21), a movable ring (23) with an inner diameter larger than that of the connecting seat (12) fixedly connected to the telescopic end of the electric telescopic rod (22), and multiple openings (24) provided on both the movable ring (23) and the fixed ring (21), and a rotating shaft (25) rotatably connected to each of the multiple openings (24). A connecting block (26) fixed to the protective plate (14) is fixedly connected to the lower end of the rotating shaft (25), and a transmission plate (27) is fixedly connected to the upper end of the rotating shaft (25). A U-shaped block (28) is fixedly connected to the protective plate (14), and a support shaft is rotatably connected to the U-shaped block (28). The support shaft is rotatably connected to the lower end of the transmission plate (27).

3. The multi-workpiece cyclic automated welding robot according to claim 2, characterized in that: When the protective plate (14) is not unfolded, the angle between the connecting block (26) and the connecting seat (12) is not 0.

4. The multi-workpiece cyclic automated welding robot according to claim 3, characterized in that: The filling mechanism includes two openings (24) slots disposed in the protective plate (14), and a fan-shaped plate (32) is slidably connected in each of the two openings (24) slots. The fan-shaped plate (32) is elastically connected to the inner wall of the opening (24) slot through a first spring (33).

5. The multi-workpiece cyclic automated welding robot according to claim 4, characterized in that: The cleaning mechanism includes a receiving cavity (41) disposed in the protective plate (14), a sliding plate (42) is slidably connected in the receiving cavity (41), and vents (685) are provided at both the upper and lower ends of the receiving cavity (41). A U-shaped rod (43) is fixedly connected to the sliding plate (42), and an arc-shaped plate (44) that abuts against the side wall of the protective plate (14) is fixedly connected to the U-shaped rod (43). A first scraper (45) is fixedly connected to the arc-shaped plate (44).

6. The multi-workpiece cyclic automated welding robot according to claim 5, characterized in that: The transmission mechanism includes a cross-shaped slot (51) on the side wall of the protective plate (14), an arc groove (52) on the fan-shaped plate (32), a moving block (53) slidably connected in the slot (51), a lever (54) that cooperates with the arc groove (52) passing through and fixedly connected to the moving block (53), a guide opening that passes through the protective plate (14) on the receiving cavity (41), a steel wire rope (55) fixed to the lever (54) in the guide opening, the end of the steel wire rope (55) being fixedly connected to the slide plate (42), and guide wheels (56) that cooperate with the steel wire rope (55) on the side wall of the receiving cavity (41) and the protective plate (14).

7. The multi-workpiece cyclic automated welding robot according to claim 6, characterized in that: The distance between the arc groove (52) and the connecting block (26) increases sequentially in the counterclockwise direction of the fan-shaped plate (32), and the sliding plate (42) is elastically connected to the inner wall of the receiving cavity (41) through the second spring (57).

8. The multi-workpiece cyclic automated welding robot according to claim 6 or 7, characterized in that: The shortening mechanism includes two arc-shaped openings (61) on the arc plate (44). An extension plate (62) is slidably connected inside the arc-shaped opening (61). A second scraper (63) is fixedly connected to the extension plate (62). A T-shaped transmission cavity (64) is provided on the inner wall of the arc-shaped opening (61). A T-shaped connecting plate (65) is slidably connected through and sealed inside the transmission cavity (64). The connecting plate (65) is fixedly connected to the extension plate (62). The connecting plate (65) is elastically connected to the connecting plate (65) through a third spring (66). A pressure relief port (67) is provided inside the transmission cavity (64).

9. The multi-workpiece cyclic automated welding robot according to claim 8, characterized in that: The arc plate (44) is provided with a pump (68) that provides power to the connecting plate (65). The pumping component (68) includes a vent (685) on a U-shaped rod (43), the vent (685) passing through a sliding plate (42), a top rod (681) fixedly connected in the receiving cavity (41), a piston (682) that cooperates with the top rod (681) being slidably connected in the vent (685), and an air storage cavity (683) that cooperates with the vent (685) on the arc plate (44), the air storage cavity (683) being connected to the transmission cavity (64) through an air distribution channel (684).

10. The multi-workpiece cyclic automated welding robot according to claim 9, characterized in that: The length of the arc plate (44) is greater than the sum of the lengths of the two extension plates (62).

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