A processing device based on the rear compartment door for passenger cars

Abstract

The application relates to the technical field of welding processing, and discloses a production and processing device for a rear hatch of a passenger car, which comprises a threaded feeding mechanism and a universal angle adjusting mechanism, and the structure comprises a hemispherical cover capable of driving a horizontal threaded rod and a horizontal limiting rod to change angles, a rotating ball connected with a curved connecting rod and installed in the hemispherical cover, and an elastic air film installed in the hemispherical cover and capable of locking the angle of the rotating ball. The production and processing device for the rear hatch of the passenger car can adjust the welding angle, the welding length and the welding distance of a laser welding gun on a weld according to the actual situation of the weld, thereby improving the applicability of the equipment in the aspect of key welding performance. In addition, the device utilizes the principle of a ball hinge to make the equipment have wider space area adjusting capacity in the aspect of welding angle, thereby further improving the use range of the equipment.

Description

Technical Field

[0001] This invention relates to the field of welding processing technology, specifically to a production and processing device for rear cabin doors of passenger vehicles. Background Technology

[0002] In the production of buses, the rear cabin door needs to undergo multiple welding processes. Welding fixtures are an essential tool in the welding process of the rear cabin door. Traditional welding fixtures are often fixed, single welding modules. Each welding fixture can only weld the cabin door of the same model of bus. Therefore, a different welding fixture is needed for each model of bus when welding the rear cabin door. Welding fixtures occupy a lot of space, are costly, and are not conducive to energy conservation and environmental protection.

[0003] To this end, Chinese Patent Publication No. CN209407791U discloses "A Welding Fixture for a Bus Side Cabin Door," the main structure of which includes a welding fixture table with a frame-shaped platform. The frame-shaped platform is equipped with a set of parallel guide rails, and guide sliders are mounted on the guide rails. The guide sliders are connected by a support shaft, and a standard welding module is mounted on the support shaft. During operation, the bus side cabin door welding fixture table automatically adjusts the position of the standard welding module by sliding the guide sliders on the guide rails. This invention enables the use of welding fixtures for different types of bus side doors. The guide slider and guide rail, the support shaft and standard welding module, and the guide slider and support shaft are all connected by movable connections, facilitating the replacement of standard welding modules and thus meeting the welding fixture requirements for a wider range of side doors. This invention avoids the shortcomings of traditional single welding fixtures that are not universally applicable to different products. Furthermore, by replacing standard welding modules to meet the welding fixture requirements of different types of side doors, it saves space occupied by the tooling table, thus contributing to energy conservation and environmental protection.

[0004] However, in actual operation, the welding fixture for the side doors of the aforementioned passenger vehicles has limitations. Since the welding angles and lengths of doors of different sizes are not the same, and the lengths and angles of most of the components of the aforementioned side door welding fixture are fixed values, it can only weld seams of specific lengths and angles. Therefore, it has the disadvantages of narrow application range and large degree of restriction in the workplace. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a production and processing device for rear cabin doors of passenger vehicles. This device can adjust the welding angle, welding length, and welding distance of the laser welding gun to the weld seam according to the actual situation of the weld seam, thereby improving the applicability of the equipment in terms of key welding performance. In addition, the device utilizes the ball joint principle to enable the equipment to have a wider range of spatial adjustment capabilities in terms of welding angle, thereby further improving the scope of application of the equipment and solving the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a manufacturing and processing device for a rear cabin door of a passenger vehicle, comprising a laser welding gun for welding, a curved connecting rod that provides support, and a permanent magnet installed at one end of the curved connecting rod; and a threaded feeding mechanism, the structure of which includes a movable slide that can drive the laser welding gun to move in a directional manner, a horizontal threaded rod that can drive the movable slide to move horizontally when rotating, a horizontal limiting rod located directly below the horizontal threaded rod and capable of preventing the movable slide from rotating, and a hand crank capable of driving the horizontal threaded rod to rotate; and a universal angle adjustment mechanism, the structure of which includes a hemispherical cover capable of causing the horizontal threaded rod and the horizontal limiting rod to change angle, a rotating ball connected to the curved connecting rod and installed inside the hemispherical cover, and an elastic air film installed inside the hemispherical cover and capable of locking the rotating ball at an angle.

[0007] Preferably, the threaded feed mechanism further includes two symmetrically arranged side plates, each of which has a shaft mounting hole. A rotatable central shaft is mounted inside each shaft mounting hole via a bearing. A hand crank is fixedly mounted at the end of one of the central shafts. A horizontal threaded rod is fixedly mounted at the opposite ends of the two central shafts via a coupling. The tops of the two side plates are fixedly connected by a top connecting plate, and a first connecting plate integrally formed with the top center of the top connecting plate is provided. A horizontal limiting rod is installed between the two side plates. The movable slide has an internal threaded hole that is installed on the body of the horizontal threaded rod via a threaded structure. The movable slide also has a horizontal sliding hole that can slide along the body of the horizontal limiting rod. A second connecting plate integrally formed with the bottom of the movable slide is provided, and the bottom end of the second connecting plate is fixedly connected to the mounting end of the laser welding gun.

[0008] Preferably, the thread structure includes an internal thread structure disposed on the inner wall of the internal thread hole and an external thread structure disposed on the body of the horizontal thread rod, and the internal thread structure matches the external thread structure.

[0009] Preferably, the cross-sectional shape of the horizontal sliding hole is consistent with the cross-sectional shape of the horizontal limiting rod, both being polygonal structures, and the structural dimensions of the cross-sectional shape of the horizontal sliding hole match the structural dimensions of the cross-sectional shape of the horizontal limiting rod.

[0010] Preferably, the universal angle adjustment mechanism further includes a No. 3 connecting plate integrally disposed at the bottom of the hemispherical cover. The center of the hemispherical cover is provided with a spherical limiting cavity with open ends. The hemispherical cover is provided with an annular air storage cavity around the central area of ​​the spherical limiting cavity. The outer circumferential surface of the hemispherical cover is provided with a gas injection channel that connects to the annular air storage cavity and has an air valve installed inside. An elastic air film is embedded in the hemispherical cover at the junction of the spherical limiting cavity and the annular air storage cavity. The rotating sphere is installed inside the spherical limiting cavity with clearance fit. The outer surface of the rotating sphere is provided with a cylindrical connecting shaft integrally disposed therewith. The end of the cylindrical connecting shaft is provided with a No. 4 connecting plate integrally disposed therewith. The No. 4 connecting plate is fixedly connected to the other end of the curved connecting rod.

[0011] Preferably, the contact surface between the elastic air film and the rotating ball is provided with anti-slip stripes to increase the frictional force on the rotating ball.

[0012] Preferably, the structural radius of the spherical limiting cavity is adapted to the structural radius of the rotating sphere, the horizontal depth of the spherical limiting cavity is less than the structural radius of the rotating sphere, and the opening radii of the two opening ends of the spherical limiting cavity are less than the structural radius of the rotating sphere.

[0013] Preferably, it also includes a hydraulic distance adjustment mechanism, the structure of which includes a hollow hydraulic pipe connected to the third connecting plate and having a hollow internal structure, a longitudinal telescopic rod that can drive the first connecting plate to move under liquid pressure, and a helical spring that can cause the longitudinal telescopic rod and the hollow hydraulic pipe to retract and reset.

[0014] Preferably, the hydraulic distance adjustment mechanism further includes a component movable cavity disposed inside the hollow hydraulic pipe. The top end of the hollow hydraulic pipe is provided with a No. 5 connecting plate integrally formed therewith, and the top end of the No. 5 connecting plate is fixedly connected to the bottom end of the No. 3 connecting plate. The top end of the component movable cavity is provided with a liquid flow-limiting cavity. A liquid docking channel communicating with the liquid flow-limiting cavity is provided on one side of the top of the hollow hydraulic pipe. The bottom end of the hollow hydraulic pipe is provided with a rod through hole communicating with the external space and the bottom end of the component movable cavity. The inner... A piston plate capable of moving along its axial direction is placed on the piston plate. A sealing guide ring is embedded in the outer circumferential side wall of the piston plate and slides against the inner wall of the component's movable cavity to resist lateral shear force transmitted from the outside and prevent movement jamming. A longitudinal telescopic rod with a through hole is fixedly installed at the bottom end of the piston plate. A helical spring in a compressed state is sleeved around the rod body inside the component's movable cavity. A No. 6 connecting plate is fixedly installed at the bottom end of the longitudinal telescopic rod, and the bottom end of the No. 6 connecting plate is fixedly connected to the top end of the No. 1 connecting plate.

[0015] Preferably, the structural shape of the perforated cross section of the rod is consistent with the structural shape of the cross section of the longitudinal telescopic rod, both being polygonal structures, and the structural dimensions of the perforated cross section of the rod match the structural dimensions of the cross section of the longitudinal telescopic rod.

[0016] Compared with the prior art, the present invention provides a manufacturing and processing device for rear cabin doors of passenger vehicles, which has the following beneficial effects: 1. The laser welding gun can be adjusted to adjust the welding angle, welding length, and welding distance of the weld according to the actual situation of the weld, thereby improving the applicability of the equipment in terms of key welding performance. In addition, the device utilizes the ball joint principle to enable the equipment to have a wider range of spatial adjustment capabilities in terms of welding angle, thereby further improving the applicability of the equipment.

[0017] 2. Equipped with a threaded feed mechanism, the horizontal threaded rod is driven to rotate by a hand crank, and a polygonal cross-section horizontal limit rod is used to prevent self-rotation. This allows for precise control of the moving slide to drive the laser welding gun to achieve uniform and directional horizontal feed. It can flexibly adjust the welding length and feed speed, and ensure that the welding process is stable and does not deviate. The structure is simple, the operation is convenient, and the adjustment accuracy is high, which effectively improves the welding quality and controllability.

[0018] 3. Equipped with a universal angle adjustment mechanism, it adopts a ball-joint structure with a rotating ball inside a hemispherical cover. In conjunction with the annular air storage chamber and the elastic air film, the rotating ball is inflated and clamped to achieve locking. The contact surface is also equipped with anti-slip stripes, which can realize free adjustment in a wide range and multiple angles in three-dimensional space. It can adapt to the weld seams of different directions of the rear door of the bus. After adjustment, the clamping force is controlled by air pressure. The torsional strength is stable and reliable. At the same time, the size design of the spherical limiting cavity can prevent the rotating ball from falling off, balancing the flexibility of adjustment and the safety of use.

[0019] 4. Equipped with a hydraulic distance adjustment mechanism, relying on the hydraulic drive structure of hollow hydraulic pipes, piston plates, and longitudinal telescopic rods, and working in conjunction with a compressed helical spring to achieve extension and reset, plus the polygonal cross-section rod perforation and the anti-rotation design of the telescopic rod, it can accurately and smoothly adjust the vertical distance between the laser welding gun and the weld seam. The adjustment process is linear and controllable, and the positioning is stable. The liquid flow limiting chamber and the hydraulic system work together to achieve fine adjustment to meet the distance requirements of different welding conditions. At the same time, the overall structure is compact and the force is uniform, ensuring the distance accuracy and safety during welding operations. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the present invention; Figure 3 This is a perspective view of the threaded feed mechanism in this invention; Figure 4This is a three-dimensional cross-sectional view of the threaded feed mechanism in this invention; Figure 5 This is a perspective view of the universal angle adjustment mechanism in this invention; Figure 6 This is a three-dimensional cross-sectional view of the universal angle adjustment mechanism in this invention; Figure 7 This is a perspective view of the hydraulic distance adjustment mechanism in this invention; Figure 8 This is a three-dimensional cross-sectional view of the hydraulic distance adjustment mechanism in this invention.

[0021] The components include: 1. Laser welding gun; 2. Curved connecting rod; 3. Threaded feed mechanism; 31. Side plate; 32. Shaft mounting hole; 33. Top connecting plate; 34. Connecting plate No. 1; 35. Central rotating shaft; 36. Coupling; 37. Horizontal threaded rod; 38. Horizontal limit rod; 39. Moving slide; 310. Internal threaded hole; 311. Horizontal sliding hole; 312. Connecting plate No. 2; 313. Hand crank; 4. Universal angle adjustment mechanism; 41. Hemispherical cover; 42. Connecting plate No. 3. 43. Spherical limiting cavity; 44. Annular gas storage cavity; 45. Elastic gas film; 46. Gas injection channel; 47. Rotating sphere; 48. Cylindrical connecting shaft; 49. No. 4 connecting plate; 5. Hydraulic distance adjustment mechanism; 51. Hollow hydraulic pipe; 52. No. 5 connecting plate; 53. Component movable cavity; 54. Liquid flow limiting cavity; 55. Liquid docking channel; 56. Rod perforation; 57. Piston plate; 58. Longitudinal telescopic rod; 59. Helical spring; 510. No. 6 connecting plate; 6. Permanent magnet. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1 and Figure 2 A manufacturing and processing device for a rear cabin door of a passenger vehicle includes a laser welding gun 1 for welding, a curved connecting rod 2 that provides support, and a permanent magnet 6 installed at one end of the curved connecting rod 2. The device requires connecting a liquid docking channel 55 to a hydraulic system that can control the liquid flow rate and direction through a pipe, and then adsorbing the permanent magnet 6 onto a magnetic three-dimensional surface.

[0024] To enable the laser welding gun 1 to be fed horizontally along the weld direction, please refer to... Figure 1 , Figure 2, Figure 3 and Figure 4 A threaded feed mechanism 3 needs to be installed. Its structure includes a movable slide 39 that can drive the laser welding gun 1 in a directional manner, a horizontal threaded rod 37 that can drive the movable slide 39 to move horizontally when rotated, a horizontal limiting rod 38 located directly below the horizontal threaded rod 37 and preventing the movable slide 39 from rotating, and a hand crank 313 that can drive the horizontal threaded rod 37 to rotate. First, the hand crank 313 is rotated in a directional manner, and the horizontal threaded rod 37 rotates accordingly. Under the limiting action of the threaded structure and the horizontal limiting rod 38, the movable slide 39 drives the laser welding gun 1. Move to the initial welding point of the weld seam, then turn on the laser welding gun 1, and then rotate the hand crank 313 in the opposite direction. Similarly, the moving slide 39 will drive the laser welding gun 1 to move along the weld seam direction. By controlling the rotation speed of the hand crank 313, the horizontal feed speed of the laser welding gun 1 can be controlled until the laser welding gun 1 completes the welding work on the weld seam. Since the rotation speed of the horizontal thread rod 37 is controllable, it has a stronger welding speed control function. At the same time, due to the limitation of the horizontal limit rod 38, the welding of the laser welding gun 1 can be more stable, thereby improving the welding effect.

[0025] For details regarding the specific structure of the threaded feed mechanism 3, please refer to [link / reference]. Figure 3 and Figure 4 It also includes two symmetrically arranged side plates 31, each of which has a shaft mounting hole 32. A rotatable central shaft 35 is mounted inside each shaft mounting hole 32 via a bearing. A hand crank 313 is fixedly mounted at one end of one of the central shafts 35. A horizontal threaded rod 37 is fixedly mounted on the opposite ends of the two central shafts 35 via a coupling 36. The top ends of the two side plates 31 are fixedly connected by a top connecting plate 33, and a first connecting plate 34 integrally formed with the top center of the top of the top connecting plate 33 is provided. A horizontal limiting rod 38 is installed between the two side plates 31. The movable slide 39 has an internal thread that is installed on the body of the horizontal threaded rod 37 via a threaded structure. The movable slide block 39 has a horizontal sliding hole 311 inside, which can slide along the body of the horizontal limiting rod 38. The bottom of the movable slide block 39 is provided with a second connecting plate 312 integral with it, and the bottom end of the second connecting plate 312 is fixedly connected to the mounting end of the laser welding gun 1. The thread structure includes an internal thread structure set on the inner wall of the internal thread hole 310 and an external thread structure set on the body of the horizontal thread rod 37. The internal thread structure matches the external thread structure. The cross-sectional shape of the horizontal sliding hole 311 is consistent with the cross-sectional shape of the horizontal limiting rod 38, both being polygonal structures. The cross-sectional dimensions of the horizontal sliding hole 311 match the cross-sectional dimensions of the horizontal limiting rod 38.

[0026] To enable the adjustment of the welding angle, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 5 and Figure 6 A universal angle adjustment mechanism 4 needs to be installed. Its structure includes a hemispherical cover 41 capable of changing the angle of the horizontal threaded rod 37 and the horizontal limiting rod 38; a rotating ball 47 connected to the curved connecting rod 2 and installed inside the hemispherical cover 41; and an elastic gas film 45 installed inside the hemispherical cover 41 and capable of locking the angle of the rotating ball 47. The direction of movement of the horizontal threaded rod 37 and the horizontal limiting rod 38 is manually adjusted, and the welding angle of the laser welding gun 1 on the weld seam is adjusted. At this time, the rotating ball 47 will undergo an adaptive angle change inside the hemispherical cover 41. Then, a controllable filling... The inflation device, which is pressurized by gas, has its exhaust port inserted into the gas injection channel 46. Then, the inflation device is started, and the high-pressure gas enters the annular gas storage chamber 44 along the gas injection channel 46, generating directional pressure on the elastic gas membrane 45. This pressure causes the elastic gas membrane 45 to wrap around the outer surface of the rotating ball 47 with corresponding pressure. The torsional resistance formed by this pressure is the torsional strength of the mechanism. By controlling the gas pressure, the value of the torsional strength can be controlled. The torsional strength needs to be sufficient to ensure the stability of the equipment during the welding process, thus enabling the adjustment of the welding angle.

[0027] For details regarding the specific structure of the universal angle adjustment mechanism 4, please refer to [link / reference]. Figure 5 and Figure 6 It also includes a No. 3 connecting plate 42 integrally disposed at the bottom of the hemispherical cover 41. The center of the hemispherical cover 41 is provided with a spherical limiting cavity 43 with open ends. The hemispherical cover 41 is provided with an annular gas storage cavity 44 located around the central area of ​​the spherical limiting cavity 43. The outer circumferential surface of the hemispherical cover 41 is provided with a gas injection channel 46 that communicates with the annular gas storage cavity 44 and has a gas valve installed inside. An elastic gas film 45 is embedded in the hemispherical cover 41 at the junction of the spherical limiting cavity 43 and the annular gas storage cavity 44. The rotating sphere 47 is installed inside the spherical limiting cavity 43 with a clearance fit, and the outer surface of the rotating sphere 47... A cylindrical connecting shaft 48 is integrally formed with the cylindrical connecting shaft 48, and a fourth connecting plate 49 integrally formed with the cylindrical connecting shaft 48 is provided at its end. The fourth connecting plate 49 is fixedly connected to the other end of the curved connecting rod 2. The contact surface between the elastic air film 45 and the rotating ball 47 is provided with anti-slip stripes to increase the friction between the elastic air film 45 and the rotating ball 47. The structural radius of the spherical limiting cavity 43 is adapted to the structural radius of the rotating ball 47. The horizontal depth of the spherical limiting cavity 43 is less than the structural radius of the rotating ball 47. The opening radii of the two opening ends of the spherical limiting cavity 43 are less than the structural radius of the rotating ball 47.

[0028] To enable the adjustment of the welding distance, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 7 and Figure 8 A hydraulic distance adjustment mechanism 5 needs to be installed. Its structure includes a hollow hydraulic pipe 51 connected to the third connecting plate 42 and having a hollow internal structure, a longitudinal telescopic rod 58 that can drive the first connecting plate 34 to move under liquid pressure, and a helical spring 59 that can cause the longitudinal telescopic rod 58 and the hollow hydraulic pipe 51 to retract and reset. When the hydraulic system is started, the piston plate 57 moves downward under liquid pressure, and the helical spring 59 is compressed. At this time, the distance between the laser welding gun 1 and the weld seam changes. By controlling it within a reasonable range, the piston plate 57 remains stationary under the liquid pressure and the elastic force of the helical spring 59, thereby realizing the function of adjusting the welding distance.

[0029] For details regarding the specific structure of the hydraulic distance adjustment mechanism 5, please refer to [link / reference]. Figure 7 and Figure 8 It also includes a component movable cavity 53 disposed inside the hollow hydraulic pipe 51. The top end of the hollow hydraulic pipe 51 is provided with a No. 5 connecting plate 52 integrally formed therewith, and the top end of the No. 5 connecting plate 52 is fixedly connected to the bottom end of the No. 3 connecting plate 42. The top end of the component movable cavity 53 is provided with a liquid flow-limiting cavity 54. A liquid docking channel 55 communicating with the liquid flow-limiting cavity 54 is provided on one side of the top of the hollow hydraulic pipe 51. The bottom end of the hollow hydraulic pipe 51 is provided with a rod through hole 56 communicating with the external space and the bottom end of the component movable cavity 53. A piston plate 57 capable of moving along its axial direction is placed inside the component movable cavity 53. The outer circumferential sidewall of the piston plate 57 is fitted with a sliding contact with the inner wall of the component movable cavity 53. A dynamically fitting sealing guide slip ring is used to resist lateral shear forces transmitted from the outside and prevent movement jamming. A longitudinal telescopic rod 58 with a through-hole 56 is fixedly installed at the bottom end of the piston plate 57. A coil spring 59 in a compressed state is sleeved around the rod body inside the component movable cavity 53. A No. 6 connecting plate 510 is fixedly installed at the bottom end of the longitudinal telescopic rod 58. The bottom end of the No. 6 connecting plate 510 is fixedly connected to the top end of the No. 1 connecting plate 34. The cross-sectional shape of the rod body through-hole 56 is consistent with the cross-sectional shape of the longitudinal telescopic rod 58, both being polygonal structures. The structural dimensions of the cross-sectional shape of the rod body through-hole 56 match the structural dimensions of the cross-sectional shape of the longitudinal telescopic rod 58.

[0030] In use, the liquid docking channel 55 is connected to the liquid return flow of a hydraulic system that can control the liquid flow rate and direction through a pipe, and then the permanent magnet 6 is attracted to a magnetic three-dimensional surface. The movement direction of the horizontal threaded rod 37 and the horizontal limit rod 38 is manually adjusted, and the welding angle of the laser welding gun 1 to the weld seam is adjusted. At this time, the rotating ball 47 will undergo an adaptive angle change inside the hemispherical cover 41. Then, an inflation device capable of controlling the inflation gas pressure is used, and its exhaust port is inserted into the gas injection channel 46. The inflation device is then activated, and the high-pressure gas will enter the interior of the annular gas storage chamber 44 along the gas injection channel 46, generating directional pressure on the elastic gas membrane 45. This pressure causes the elastic gas membrane 45 to wrap around the outer surface of the rotating ball 47 with a corresponding pressure. The torsional resistance formed by the pressure is the torsional strength of the mechanism. By controlling the gas pressure, the value of the torsional strength can be controlled. The torsional strength needs to be sufficient to ensure the stability of the equipment during the welding process. The welding angle adjustment function can be completed. When the welding angle needs to be readjusted or the processing is finished, the gas valve installed inside the gas injection channel 46 is operated to release the pressure and empty the high-pressure gas in the annular gas storage chamber 44. The elastic gas film 45 is reset due to its own elastic contraction and detaches from the outer surface of the rotating ball 47, thereby releasing the clamping and locking state of the rotating ball 47. When the hydraulic system is activated, the piston plate 57 moves downward under the liquid pressure, while the helical spring 59 is compressed. At this time, the distance between the laser welding gun 1 and the weld changes. It is sufficient to control it within a reasonable range. Under the liquid pressure and the elastic force of the helical spring 59, the piston plate 57 remains stationary. Rotating the hand crank 313 in a directional manner causes the horizontal threaded rod 37 to rotate accordingly. Under the limiting action of the threaded structure and the horizontal limiting rod 38, the movable slide 39 moves the laser welding gun 1 to the initial welding point of the weld seam. Then, the laser welding gun 1 is turned on. Rotating the hand crank 313 in the opposite direction causes the movable slide 39 to move the laser welding gun 1 along the weld seam direction. By controlling the rotation speed of the hand crank 313, the horizontal feed speed of the laser welding gun 1 can be controlled until the laser welding gun 1 completes the welding work on the weld seam. Since the rotation speed of the horizontal threaded rod 37 is controllable, it has a stronger welding speed control function. At the same time, due to the limiting action of the horizontal limiting rod 38, the welding of the laser welding gun 1 is more stable, thereby improving the welding effect.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A manufacturing and processing apparatus for a rear cabin door of a passenger vehicle, comprising a laser welding gun (1) for welding, a curved connecting rod (2) for supporting the rear cabin door, and a permanent magnet (6) installed at one end of the curved connecting rod (2), characterized in that: It also includes, The threaded feed mechanism (3) includes a movable slide (39) that can drive the laser welding gun (1) to move in an directional manner, a horizontal threaded rod (37) that can drive the movable slide (39) to move horizontally when rotating, a horizontal limit rod (38) located directly below the horizontal threaded rod (37) and able to prevent the movable slide (39) from rotating, and a hand crank (313) that can drive the horizontal threaded rod (37) to rotate. And a universal angle adjustment mechanism (4), the structure of which includes a hemispherical cover (41) that can drive the horizontal threaded rod (37) and the horizontal limiting rod (38) to change angle, a rotating ball (47) connected to the curved connecting rod (2) and installed inside the hemispherical cover (41), and an elastic air film (45) installed inside the hemispherical cover (41) and capable of locking the rotating ball (47) at an angle.

2. The manufacturing and processing device for rear cabin doors of passenger vehicles according to claim 1, characterized in that: The threaded feed mechanism (3) also includes two symmetrically arranged side plates (31). Each of the two side plates (31) is provided with a shaft mounting hole (32). A rotatable central shaft (35) is installed inside each shaft mounting hole (32) through a bearing. A hand crank (313) is fixedly installed at the end of one of the central shafts (35). A horizontal threaded rod (37) is fixedly installed at the opposite ends of the two central shafts (35) through a coupling (36). The top ends of the two side plates (31) are fixedly connected by a top connecting plate (33), and the top of the top connecting plate (33) is... A first connecting plate (34) with an integral structure is provided at the center of the part. A horizontal limiting rod (38) is installed between the two side plates (31). The movable slide (39) is provided with an internal threaded hole (310) installed on the body of the horizontal threaded rod (37) through a threaded structure. The movable slide (39) is provided with a horizontal sliding hole (311) that can slide along the body of the horizontal limiting rod (38). The bottom of the movable slide (39) is provided with a second connecting plate (312) with an integral structure, and the bottom end of the second connecting plate (312) is fixedly connected to the mounting end of the laser welding gun (1).

3. The manufacturing and processing device for rear cabin doors of passenger vehicles according to claim 2, characterized in that: The threaded structure includes an internal thread structure located on the inner wall of the internal threaded hole (310) and an external thread structure located on the body of the horizontal threaded rod (37), and the internal thread structure matches the external thread structure.

4. The manufacturing and processing device for rear cabin doors of passenger vehicles according to claim 3, characterized in that: The cross-sectional shape of the horizontal sliding hole (311) is consistent with the cross-sectional shape of the horizontal limiting rod (38), both being polygonal structures, and the structural dimensions of the cross-sectional shape of the horizontal sliding hole (311) match the structural dimensions of the cross-sectional shape of the horizontal limiting rod (38).

5. A manufacturing and processing device for rear cabin doors of passenger vehicles according to claim 4, characterized in that: The universal angle adjustment mechanism (4) also includes a No. 3 connecting plate (42) integrally disposed at the bottom of the hemispherical cover (41). The center of the hemispherical cover (41) is provided with a spherical limiting cavity (43) with open structures at both ends. The hemispherical cover (41) is provided with an annular gas storage cavity (44) located around the central area of ​​the spherical limiting cavity (43). The outer circumferential surface of the hemispherical cover (41) is provided with a gas injection channel (46) that connects to the annular gas storage cavity (44) and has a gas valve installed inside. 41) An elastic gas film (45) is embedded at the junction of the spherical limiting cavity (43) and the annular gas storage cavity (44). The rotating ball (47) is installed inside the spherical limiting cavity (43) with clearance fit. The outer surface of the rotating ball (47) is provided with a cylindrical connecting shaft (48) integral with it. The end of the cylindrical connecting shaft (48) is provided with a No. 4 connecting plate (49) integral with it. The No. 4 connecting plate (49) is fixedly connected to the other end of the curved connecting rod (2).

6. The manufacturing and processing device for rear cabin doors of passenger vehicles according to claim 5, characterized in that: The contact surfaces of the elastic air film (45) and the rotating ball (47) are provided with anti-slip stripes to increase the friction of the elastic air film (45) with the rotating ball (47).

7. A manufacturing and processing device for rear cabin doors of passenger vehicles according to claim 6, characterized in that: The structural radius of the spherical limiting cavity (43) is adapted to the structural radius of the rotating sphere (47). The horizontal depth of the spherical limiting cavity (43) is less than the structural radius of the rotating sphere (47). The opening radii of the two opening ends of the spherical limiting cavity (43) are less than the structural radius of the rotating sphere (47).

8. A manufacturing and processing device for rear cabin doors of passenger vehicles according to claim 7, characterized in that: It also includes a hydraulic distance adjustment mechanism (5), the structure of which includes a hollow hydraulic pipe (51) connected to the third connecting plate (42) and having a hollow internal structure, a longitudinal telescopic rod (58) that can drive the first connecting plate (34) to move under liquid pressure, and a helical spring (59) that can cause the longitudinal telescopic rod (58) and the hollow hydraulic pipe (51) to retract and reset.

9. A manufacturing and processing device for rear cabin doors of passenger vehicles according to claim 8, characterized in that: The hydraulic distance adjustment mechanism (5) further includes a component movable cavity (53) disposed inside the hollow hydraulic pipe (51). The top end of the hollow hydraulic pipe (51) is provided with a No. 5 connecting plate (52) integrally formed with it, and the top end of the No. 5 connecting plate (52) is fixedly connected to the bottom end of the No. 3 connecting plate (42). The top end of the component movable cavity (53) is provided with a liquid flow limiting cavity (54). A liquid docking channel (55) connecting the liquid flow limiting cavity (54) is provided on one side of the top of the hollow hydraulic pipe (51). The bottom end of the hollow hydraulic pipe (51) is provided with a rod through hole (56) connecting the external space and the bottom end of the component movable cavity (53). The component movable cavity (53) Inside the component is a piston plate (57) that can move along its axial direction. The outer circumferential side wall of the piston plate (57) is fitted with a sealing guide ring that slides against the inner wall of the component's movable cavity (53) to resist the lateral shear force transmitted from the outside and prevent movement jamming. The bottom end of the piston plate (57) is fixedly installed with a longitudinal telescopic rod (58) that passes through the rod body through hole (56). The longitudinal telescopic rod (58) is fitted with a coil spring (59) in a compressed state on the outer periphery of the rod body inside the component's movable cavity (53). The bottom end of the longitudinal telescopic rod (58) is fixedly installed with a sixth connecting plate (510). The bottom end of the sixth connecting plate (510) is fixedly connected to the top end of the first connecting plate (34).

10. A manufacturing and processing device for rear cabin doors of passenger vehicles according to claim 9, characterized in that: The cross-sectional shape of the rod through hole (56) is consistent with the cross-sectional shape of the longitudinal telescopic rod (58), both being polygonal structures, and the structural dimensions of the cross-sectional shape of the rod through hole (56) match the structural dimensions of the cross-sectional shape of the longitudinal telescopic rod (58).

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