Rapid tailor-welding device for civil air defense door frame and machining process thereof

Abstract

The invention discloses a civil air defense door frame rapid tailor-welding device and a machining process thereof, and relates to the technical field of tailor-welding devices, the civil air defense door frame rapid tailor-welding device comprises a welding table and a welding mechanism, the top of the welding table is provided with a door edge a, and the inner side of the door edge a is provided with a rib plate. According to the rapid tailor-welding device for the civil air defense door frame and the machining technology of the rapid tailor-welding device, when the civil air defense door frame is welded, a door edge a and a door edge b are placed between two sets of clamping blocks, then a motor b is started to drive a limiting mechanism to move, the limiting mechanism can adapt to the door edges of different sizes, and the two sets of door edges are rapidly spliced and clamped; a rib plate can be placed between two sets of door plates and supported through a supporting plate in the supporting mechanism, when the welding height of the rib plate needs to be adjusted, the position of a motor b can be switched through the switching mechanism so as to drive the supporting mechanism to move, after welding is completed, the ejection mechanism can eject a door frame, and therefore workers can take out the door frame conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, and in particular to a rapid welding device for a civil air defense door frame and a processing technology thereof. Background Art

[0002] The civil air defense door frame is the door at the entrance and exit of the civil defense project, which is mainly used to protect the safety of personnel and materials in wartime or emergency situations. When processing the civil air defense door, it is necessary to splice the door edge on the civil air defense door frame, which needs to be done by welding equipment. When the existing welding equipment is used, when welding the inner sides of the two door edges, it is necessary to extend the welding gun between the two door edges and fix the door edge and the rib plate by welding.

[0003] For example, announcement number CN117961389B discloses a rapid welding device for civil air defense door frames and its processing technology. This solution can ensure that the welding slag can be kept away from the welding gun during the welding process and will not be located in front of its moving path, thereby avoiding affecting the quality of the weld. In addition, the impact rod can be made to impact the civil air defense door frame during the welding process to achieve vibration, thereby shaking off the welding slag that falls between the first door side and the second door side and does not slide down along the inclined civil air defense door frame, thereby allowing this part of the welding slag to be kept away from the welding gun to avoid affecting the weld.

[0004] When the welding device in the above scheme is welding the door frame, the welding platform can be offset by the swing assembly during welding, so that the welding slag falls to the other side of the welding point during welding, preventing the welding gun from contacting the welding slag generated by welding during welding, which affects the quality of welding. However, when the existing welding device fixes the civil air defense door frame to the welding platform, it is necessary to pre-treat the civil air defense door frame through other welding devices in advance to fix the two groups of door edges and the ribs between them, and then the door frame can be limited by the limiting structure. However, this welding method has many steps to operate, and it is difficult to quickly weld the civil air defense door frame. In addition, when fixing the door frame, other existing technologies mostly use multiple groups of cylinders to push the limiting plates at different positions to contact the side of the door frame to limit it. The synchronization is poor, and it is difficult to synchronously limit the inner and outer groups of door edges. The synchronous limiting mechanism in the existing welding device can only limit the door frame of fixed size when limiting the door frame, which has great limitations. At the same time, there is no mechanism for supporting the ribs on the welding platform, so it is difficult to weld the ribs and the door edges. Summary of the invention

[0005] The purpose of the present invention is to provide a rapid welding device for civil air defense door frames and a processing technology thereof, so as to solve the problem raised in the above background technology that the existing rapid welding device for civil air defense door frames is difficult to perform rapid limiting processing on the door frames.

[0006] To achieve the above object, the present invention provides the following technical solution: a rapid welding device for a civil air defense door frame, comprising a welding platform and a welding mechanism, a door edge a is arranged on the top of the welding platform, a rib plate is arranged on the inner side of the door edge a, and a door edge b is arranged on one side of the rib plate. A welding mechanism is arranged on the top of the welding table, and the welding mechanism includes a welding frame arranged on the top of the welding table, a moving block is slidably connected to the top of the welding frame, a cylinder is fixed to the bottom of the moving block, a welding head is installed at the bottom of the cylinder, a switching mechanism is arranged at the bottom of the welding table, and the switching mechanism includes a bracket fixedly connected to the bottom of the welding table, a hydraulic cylinder is installed on the top of the bracket, a motor b is fixedly connected to the top of the hydraulic cylinder, a driving gear is fixedly connected to the top of the motor b, a driven gear a and a driven gear b are arranged on one side of the driving gear, a synchronous wheel a is fixedly connected to the top of the driven gear a, a synchronous belt is sleeved on the outer side of the synchronous wheel a, and multiple sets of synchronous wheels b are sleeved on one side of the synchronous belt, a worm is fixedly connected to the top of the synchronous wheel b and the synchronous wheel a, one end of the worm is meshingly connected to a worm wheel, a connecting shaft a is fixedly connected to both sides of the worm wheel, a threaded rod a is inserted into the interior of the connecting shaft a, and a clamping block is threadedly connected to the outer side of the threaded rod a, and the clamping block The shape is rectangular, and a V-shaped groove is provided at one end of the threaded rod a close to the connecting shaft a, and the V-shaped groove is engaged with the wedge block, and multiple groups of tooth groove bodies are provided on the outer side of the wedge block, and the multiple groups of tooth groove bodies are equidistantly distributed on the wedge block). The top of the wedge block is fixedly connected with a spring b, and a supporting mechanism for supporting the rib plate is arranged inside the welding table, and the supporting mechanism includes a pulley a fixedly connected to the top of the driven gear b, and the bottom of the driven gear b is movably connected to the welding table through a rotating shaft, and the outer side of the pulley a is sleeved with a belt body, and the inner side of the belt body is sleeved with multiple groups of pulleys b, and the bottom of the pulley b is movably connected to the welding table through a rotating shaft, and the pulley b and the inside of the pulley a are both slidably connected with a connecting rod, and the top of the connecting rod is fixedly connected with a threaded rod b, and one end of the threaded rod b is threadedly connected to the welding table, and the top of the threaded rod b is movably connected with a supporting plate through a bearing, and the top of the welding table is provided with multiple groups of ejection mechanisms for lifting the door frame.

[0007] Preferably, the outer side of the worm is movably connected to the welding table through a bearing, the outer side of the connecting shaft a is movably connected to a connecting frame b through a bearing, the bottom of the connecting frame b is fixedly connected to the welding table, and one end of the threaded rod a is movably connected to the welding table through a bearing.

[0008] Preferably, the outer side of the clamping block is slidably connected to the welding table, the inner side of the clamping block is slidably connected to a limit rod, one end of the limit rod is fixedly connected to the welding table, the top of the spring b is fixedly connected to the inner side of the connecting shaft a, and the outer side of the wedge block is slidably connected to the connecting shaft a.

[0009] Preferably, electric push rods are installed on both sides of the welding frame, one end of the electric push rods is fixedly connected to a connecting frame a, the inner side of the connecting frame a is movably connected to a limiting wheel through a rotating shaft, the bottom of the limiting wheel is fixedly connected to a protrusion, a connecting block is provided at the bottom of the protrusion, one end of the connecting block is fixedly connected to the welding frame, and the inside of the connecting block is fixedly connected to a spring a.

[0010] Preferably, one end of spring a is fixedly connected to a collision block, the top of the collision block is fixedly connected to a toggle block, the outer sides of the toggle block and the collision block are slidably connected to the connecting block, motor a is installed on both sides of the bottom of the welding frame, the output end of motor a is fixedly connected to a walking wheel, and the bottom of the walking wheel is in rolling contact with the welding table.

[0011] Preferably, the outer side of the connecting rod is rollingly connected to multiple groups of ball bearings, and the multiple groups of ball bearings are equidistantly distributed on the connecting rod, the outer side of the ball bearings is rollingly connected to the pulley a, the outer side of the threaded rod b is slidingly connected to the synchronous wheel b and the worm, guide rods are fixedly connected to both sides of the bottom of the support plate, the connecting rod has a rectangular shape, and a rectangular groove matching the connecting rod is opened inside the pulley b, and the outer side of the guide rod is slidingly connected to the welding table.

[0012] Preferably, the ejection mechanism includes a rack plate fixedly connected to one side of the clamping block, the bottom of the rack plate is meshedly connected with a connecting gear, the interior of the connecting gear is penetrated by a connecting shaft b, and the interior of the connecting shaft b is fixedly connected with a spring c.

[0013] Preferably, one end of the spring c is fixedly connected to a block, the outer side of the block is slidably connected to the connecting shaft b, a ratchet groove is opened inside the connecting gear, and the ratchet groove is engaged with the block, and the outer side of the connecting shaft b is fixedly connected to a limiting ring.

[0014] Preferably, the outer side of the limiting ring is slidingly connected to the connecting gear, one end of the connecting shaft b is fixedly connected to a lever, one end of the lever is rollingly abutted against a rotating plate through a roller, one side of the rotating plate is movably connected to the welding table through a rotating shaft, and one end of the lever is movably connected to the welding table through a rotating shaft.

[0015] A rapid welding process for a civil air defense door frame comprises the following steps: S1, place the door edge a and the door edge b on the welding table, then start the motor b to drive the clamping mechanism to move, and clamp the door edge a and the door edge b in the center; S2, placing the rib plate between the door edge a and the door edge b, and supporting it through a supporting mechanism; S3, start the welding mechanism, the welding mechanism will move around the door frame, and weld the connection between the door edge a, the rib plate and the door edge b through the internal welding head; S4. After welding is completed, cancel the limit of the door frame by the limit mechanism and remove the door frame from the welding table.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the rapid welding device for civil air defense door frames and its processing technology, when welding the civil air defense door frames, by placing the door edge a and the door edge b between the two groups of clamping blocks, and then starting the motor b to drive the limit mechanism to move, the limit mechanism can adapt to door edges of different sizes, and quickly splice and clamp the two groups of door edges, after the positioning and clamping of the two groups of door panels are completed, the rib plate can be placed between the two groups of door panels, and the rib plate can be supported by the supporting plate in the supporting mechanism, when the welding height of the rib plate needs to be adjusted, the position of the motor b can be switched by the switching mechanism, thereby driving the supporting mechanism to move, and when the welding is completed, the ejection mechanism will lift the door frame, making it convenient for the staff to take it out, so that the above operation can be used to quickly position and clamp the door edges a and door edges b of different sizes on the welding device, and make the rib plate between the door edges a and door edges b, thereby completing the rapid welding processing of the door frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional cross-sectional schematic diagram of the present invention; Figure 2 It is a three-dimensional schematic diagram of the present invention; Figure 3 It is a three-dimensional cross-sectional schematic diagram of the welding table of the present invention; Figure 4 It is a three-dimensional schematic diagram of the welding mechanism of the present invention; Figure 5 It is a schematic diagram of the front cross section of the welding table of the present invention; Figure 6 It is a three-dimensional schematic diagram of the supporting mechanism of the present invention; Figure 7 It is a three-dimensional cross-sectional schematic diagram of the connecting shaft a of the present invention; Figure 8 It is a three-dimensional cross-sectional schematic diagram of the worm of the present invention; Fig. 9 For the present invention Figure 4 A magnified schematic diagram of point A; Fig.10 It is a three-dimensional cross-sectional schematic diagram of the connecting gear of the present invention; Fig.11 It is a three-dimensional schematic diagram of the limiting ring of the present invention; Fig.12 It is a three-dimensional cross-sectional schematic diagram of the connecting block of the present invention.

[0018] In the figure: 1. welding table; 2. door edge a; 3. rib plate; 4. door edge b; 5. welding mechanism; 51. welding frame; 52. moving block; 53. cylinder; 54. welding head; 55. electric push rod; 56. connecting frame a; 57. limiting wheel; 58. bump; 59. connecting block; 510. spring a; 511. impact block; 512. toggle block; 513. motor a; 514. walking wheel; 6. switching mechanism; 61. bracket; 62. hydraulic cylinder; 63. motor b; 64. driving gear; 65. driven gear a; 66. driven gear b; 7. synchronous wheel a; 8. synchronous belt; 9. synchronous wheel b; 10. worm; 11. worm wheel; 12. Connecting shaft a; 13. Threaded rod a; 14. Clamping block; 15. Limiting rod; 16. V-shaped groove; 17. Wedge block; 18. Tooth groove body; 19. Spring b; 20. Connecting frame b; 21. Supporting mechanism; 211. Pulley a; 212. Belt body; 213. Pulley b; 214. Connecting rod; 215. Ball; 216. Threaded rod b; 217. Supporting plate; 218. Guide rod; 22. Ejection mechanism; 221. Rack plate; 222. Connecting gear; 223. Connecting shaft b; 224. Spring c; 225. Block; 226. Ratchet groove; 227. Limiting ring; 228. Push rod; 229. Rotating plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 12 The present invention provides a technical solution: a rapid welding device for a civil air defense door frame, comprising a welding platform 1 and a welding mechanism 5, a door edge a2 is arranged on the top of the welding platform 1, a rib plate 3 is arranged on the inner side of the door edge a2, and a door edge b4 is arranged on one side of the rib plate 3, A welding mechanism 5 is provided on the top of the welding table 1. The welding mechanism 5 includes a welding frame 51 provided on the top of the welding table 1. A moving block 52 is slidably connected to the top of the welding frame 51. A cylinder 53 is fixed to the bottom of the moving block 52. A welding head 54 is installed at the bottom of the cylinder 53. A switching mechanism 6 is provided at the bottom of the welding table 1. The switching mechanism 6 includes a bracket 61 fixedly connected to the bottom of the welding table 1. A hydraulic cylinder 62 is installed on the top of the bracket 61. A motor b63 is fixedly connected to the top of the hydraulic cylinder 62. A driving gear 64 is fixedly connected to the top of the motor b63. ​​A driven gear a65 and a driven gear b66 are provided on one side of the driving gear 64. A synchronous wheel a7 is fixedly connected to the top of the driven gear a65. A synchronous belt 8 is sleeved on the outer side of the synchronous wheel a7. The synchronous belt 8 A plurality of synchronous wheels b9 are sleeved on one side, and a worm 10 is fixedly connected to the top of the synchronous wheel b9 and the synchronous wheel a7, and a worm 10 is meshedly connected to one end of the worm 10, and a connecting shaft a12 is fixedly connected to both sides of the worm wheel 11, and a threaded rod a13 is inserted into the interior of the connecting shaft a12, and a clamping block 14 is threadedly connected to the outer side of the threaded rod a13, and the clamping block 14 is rectangular in shape, and a V-shaped groove 16 is provided at one end of the threaded rod a13 close to the connecting shaft a12, and the V-shaped groove 16 is engaged and connected with a wedge block 17, and a plurality of tooth groove bodies 18 are provided on the outer side of the wedge block 17, and the plurality of tooth groove bodies 18 are equidistantly distributed on the wedge block 17, and a spring b19 is fixedly connected to the top of the wedge block 17, and a supporting mechanism 21 for supporting the rib plate 3 is provided inside the welding table 1; The supporting mechanism 21 includes a pulley a211 fixedly connected to the top of the driven gear b66, the bottom of the driven gear b66 is movably connected to the welding table 1 through a rotating shaft, the outer side of the pulley a211 is sleeved with a belt body 212, the inner side of the belt body 212 is sleeved with multiple groups of pulleys b213, the bottom of the pulley b213 is movably connected to the welding table 1 through a rotating shaft, the pulley b213 and the inside of the pulley a211 are both slidably connected with a connecting rod 214, the top of the connecting rod 214 is fixedly connected with a threaded rod b216, one end of the threaded rod b216 is threadedly connected to the welding table 1, the top of the threaded rod b216 is movably connected to a supporting plate 217 through a bearing, and the top of the welding table 1 is provided with multiple groups of ejection mechanisms 22 for lifting the door frame.

[0021] The outer side of the worm 10 is movably connected to the welding table 1 through a bearing, the outer side of the connecting shaft a12 is movably connected to a connecting frame b20 through a bearing, the bottom of the connecting frame b20 is fixedly connected to the welding table 1, and one end of the threaded rod a13 is movably connected to the welding table 1 through a bearing; the outer side of the clamping block 14 is slidably connected to the welding table 1, and the inner side of the clamping block 14 is slidably connected to a limiting rod 15, one end of the limiting rod 15 is fixedly connected to the welding table 1, the top of the spring b19 is fixedly connected to the inner side of the connecting shaft a12, the outer side of the wedge block 17 is slidably connected to the connecting shaft a12, a through hole matching the limiting rod 15 is opened inside the clamping block 14, the limiting rod 15 and the clamping block 14 constitute a sliding structure, the clamping block 14 and the threaded rod a13 constitute a threaded transmission structure, and the worm 10 and the worm wheel 11 constitute an engaging transmission structure; Electric push rods 55 are installed on both sides of the welding frame 51. One end of the electric push rod 55 is fixedly connected to a connecting frame a56. The inner side of the connecting frame a56 is movably connected to a limiting wheel 57 through a rotating shaft. A protrusion 58 is fixedly connected to the bottom of the limiting wheel 57. A connecting block 59 is arranged at the bottom of the protrusion 58. One end of the connecting block 59 is fixedly connected to the welding frame 51. A spring a510 is fixedly connected to the inside of the connecting block 59. One end of the spring a510 is fixedly connected to a striking block 511. The top of the striking block 511 is fixedly connected to the welding frame 511. The bottom of the welding frame 51 is fixedly connected with a toggle block 512, and the outer sides of the toggle block 512 and the impact block 511 are slidably connected with the connecting block 59. Motors a513 are installed on both sides of the bottom of the welding frame 51, and the output end of the motor a513 is fixedly connected with a walking wheel 514. The bottom of the walking wheel 514 is in rolling contact with the welding table 1. A sliding groove matching the impact block 511 is provided inside the connecting block 59. The impact block 511 and the connecting block 59 constitute a sliding structure, and the connecting frame a56 and the limiting wheel 57 constitute a rotating structure; The outer side of the connecting rod 214 is rollingly connected with multiple groups of balls 215, and the multiple groups of balls 215 are equidistantly distributed on the connecting rod 214. The outer side of the balls 215 is rollingly connected with the pulley a211, and the outer side of the threaded rod b216 is slidingly connected with the synchronous wheel b9 and the worm 10. The two sides of the bottom of the supporting plate 217 are fixedly connected with guide rods 218. The outer shape of the connecting rod 214 is rectangular, and the inner part of the pulley b213 is provided with a rectangular groove matching the connecting rod 214. The outer side of the guide rod 218 is slidingly connected with the welding table 1. The top of the welding table 1 is provided with a limit groove matching the guide rod 218. The guide rod 218 and the welding table 1 form a sliding structure; The ejection mechanism 22 includes a rack plate 221 fixedly connected to one side of the clamping block 14, the bottom of the rack plate 221 is meshedly connected with a connecting gear 222, the interior of the connecting gear 222 is penetrated by a connecting shaft b223, the interior of the connecting shaft b223 is fixedly connected with a spring c224; one end of the spring c224 is fixedly connected with a clamping block 225, the outer side of the clamping block 225 is slidably connected with the connecting shaft b223, a ratchet groove 226 is provided inside the connecting gear 222, and the ratchet groove 226 is engaged with the clamping block 225, and the outer side of the connecting shaft b223 is fixedly connected with a limiting ring 227; the limiting ring 2 The outer side of 27 is slidably connected to the connecting gear 222, one end of the connecting shaft b223 is fixedly connected to a lever 228, one end of the lever 228 is rollingly abutted against a rotating plate 229 through a roller, one side of the rotating plate 229 is movably connected to the welding table 1 through a rotating shaft, one end of the lever 228 is movably connected to the welding table 1 through a rotating shaft, the rack plate 221 and the connecting gear 222 constitute a meshing transmission structure, the rotating plate 229 and the welding table 1 constitute a rotating structure through the rotating shaft, and a moving groove matching the block 225 is opened inside the connecting shaft b223, and the block 225 and the connecting shaft b223 constitute a sliding structure.

[0022] In specific implementation, the rapid welding device for civil air defense door frames and its processing technology, when welding the civil air defense door frames, place the door edge a2 and the door edge b4 between two groups of clamping blocks 14, and then start the motor b63. ​​At this time, the driving gear 64 at the top of the motor b63 is meshed with the driven gear a65, so it can drive the driven gear a65 to rotate. When the driven gear a65 rotates, it can drive the top synchronous wheel a7 to rotate. The synchronous wheel a7 will drive multiple groups of synchronous wheels b9 to rotate through the outer synchronous belt 8. When the synchronous wheels b9 and the synchronous wheels a7 rotate, they will drive the top worm 10 and the worm wheel on one side. 11 meshes, thereby driving the worm wheel 11 to rotate. When the worm wheel 11 rotates, it will drive the connecting shafts a12 on both sides to rotate. When the connecting shaft a12 rotates, it can move the threaded rod a13 synchronously through the internal wedge block 17. When the threaded rod a13 rotates, it will perform threaded transmission with the clamping block 14 at one end to make it move. When the clamping block 14 moves, it will be limited by the limit rod 15, so it will not rotate. Multiple sets of synchronous wheels b9 and synchronous wheels a7 will drive multiple sets of clamping blocks 14 to move synchronously. Multiple sets of clamping blocks 14 will push the door edge a2 and the door edge b4 respectively to move them to the center. When a set of clamping blocks 14 completes clamping of the door edge a2 or the door edge b4, it will be unable to move. At this time, the threaded rod a13 in the clamping block 14 will not be able to perform threaded transmission with it, so the wedge block 17 will not be able to drive the threaded rod a13 to rotate, and the resistance encountered by the wedge block 17 during rotation will also increase accordingly. Therefore, the wedge block 17 will move in the connecting shaft a12 under the guidance of the inclined surfaces on both sides and the inclined surfaces of the V-shaped groove 16, and squeeze the spring b19 at one end. When the wedge block 17 is separated from the inside of the threaded rod a13, the connecting shaft a12 and the wedge block 17 continue to rotate. Since the outer side of the wedge block 17 is provided with multiple groups of tooth groove bodies 18, it can intermittently engage with the V-groove 16 inside the threaded rod a13, thereby preventing the wedge block 17 from being disengaged from the threaded rod a13 when the clamping block 14 is not clamped on the door edge. In this way, after one group of clamping blocks 14 has completed clamping the door edge a2, the worm gear 11 will still rotate and drive another group of clamping blocks 14 to clamp the door edge b4, thereby preventing the two groups of door edges from being unable to be positioned and clamped due to different spacing. Through the above operation, the two groups of door edges can be quickly spliced ​​and clamped, thereby accelerating the welding of the door frame; When the positioning and clamping of the two sets of door panels are completed, the rib plate 3 can be placed between the two sets of door panels, and the rib plate 3 can be supported by the supporting plate 217 in the supporting mechanism 21. When the welding height of the rib plate 3 needs to be adjusted, the height of the supporting plate 217 needs to be adjusted. By starting the hydraulic cylinder 62 in the switching mechanism 6, the hydraulic cylinder 62 will drive the motor b63 to move downward, so that the motor b63 drives the top driving gear 64 to disengage from the meshing with the driven gear a65 and instead mesh with the driven gear b66. When the driven gear b66 rotates, it can drive the pulley a211 to rotate, and the pulley a211 will drive the pulley b213 to rotate through the belt body 212 sleeved on the outside, and the pulley a211 and the connecting rod 214 inside the pulley b213 will rotate synchronously. Rotate, so that the threaded rod b216 at the top of the connecting rod 214 also rotates, and the threaded rod b216 rotates, and the welding table 1 is threadedly transmitted, thereby driving the supporting plate 217 to move upward, and the supporting plate 217 moves, and the guide rod 218 at the bottom slides in the welding table 1, so as to guide and limit, and the connecting rod 214 at the bottom of the threaded rod b216 also slides in the pulley b213, and contacts with the pulley b213 through the ball 215, so as to reduce the friction during movement, because the multiple groups of pulleys b213 and the pulley a211 rotate synchronously, so they can drive the multiple groups of supporting plates 217 to move upward synchronously, so as to adapt to the height at which the rib plate 3 needs to be placed, and after the adjustment is completed, the switching mechanism 6 can be reset to mesh with the driven gear a65 again; When welding is completed, the motor b63 will reverse, thereby driving the two groups of clamping blocks 14 to move away from each other and disengage from the clamping of the door frame. When the two groups of clamping blocks 14 are about to move to the maximum spacing, the rack plate 221 on one side contacts the connecting gear 222, and the ratchet groove 226 in the connecting gear 222 will engage with the plane on one side of the clamping block 225, thereby driving the clamping block 225 and the connecting shaft b223 to rotate. When the connecting shaft b223 rotates, it can drive the lever 228 at one end to rotate as well. The lever 228 can drive the rotating plate 229 to flip through the roller at the end. When the two groups of rotating plates 229 flip, they can lift up the door frame with the top welded. At this time, the clamping block 14 has not moved to the edge position, and the motor b63 will stop rotating. After the door frame is lifted up, the bottom will be out of contact with the top of the welding table 1, making it convenient for the staff to take it out. After the motor b63 is released, it will continue to rotate, thereby driving the rack plate 221 on one side of the clamping block 14 to disengage from the meshing with the connecting gear 222. At this time, the lever 228 will rotate and reset under the action of gravity, and the rotating plate 229 will also reset accordingly. The clamping block 14 that has been unfolded to the edge can be convenient for placing the next set of door frames. When the clamping block 14 moves to position and clamp a new set of door frames, the rack plate 221 will mesh with the connecting gear 222 again. At this time, the connecting gear 222 will reverse, and the internal ratchet groove 226 will contact the wedge-shaped surface of the clamping block 225. At this time, the clamping block 225 will be squeezed and moved, and squeeze the spring c224 on one side, so that it will retract into the connecting shaft b223. ​​Therefore, the connecting gear 222 will idle at this time, and the lever 228 will not rotate either, so as to prevent the door frame placed on the top of the welding table 1 from being lifted up. When welding the door frame, the electric push rods 55 on both sides of the welding mechanism 5 will push the limiting wheel 57 on one side of the connecting frame a56 to be close to the side of the door edge a2 and the door edge b4, and then start the motor a513 to drive the walking wheel 514 to rotate, so that the welding mechanism 5 moves on the edge of the door frame, and welds the connection between the door edge a2, the rib plate 3 and the door edge b4 through the internal welding head 54. When the limiting wheel 57 rotates, it will drive the bottom protrusion 58 to toggle the toggle block 512, so that the toggle block 512 and the impact block 51 at the bottom thereof are 1 moves, the impact block 511 will squeeze the spring a510 on one side. When the protrusion 58 is out of contact with the toggle block 512, the spring a510 will reset and push the impact block 511 to impact the door edge a2 and the door edge b4, causing them to vibrate, and the welding slag generated during welding will be separated to ensure the quality of welding. In this way, through the above operation, the door edges a2 and b4 of different sizes on the welding device can be quickly positioned and clamped, and the rib plate 3 can be placed between the door edges a2 and b4, thereby completing the rapid welding process of the door frame.

[0023] A rapid welding process for a civil air defense door frame comprises the following steps: S1, place the door edge a2 and the door edge b4 on the welding table 1, and then start the motor b63 to drive the clamping mechanism to move, and clamp the door edge a2 and the door edge b4 in the center; S2, placing the rib plate 3 between the door edge a2 and the door edge b4, and supporting it through the supporting mechanism 21; S3, start the welding mechanism 5, the welding mechanism 5 will move around the door frame, and weld the connection between the door edge a2, the rib plate 3 and the door edge b4 through the internal welding head 54; S4, after welding is completed, the limit mechanism for the door frame is cancelled, and the door frame is removed from the welding table 1.

[0024] To sum up, the door edge a2 and the door edge b4 are placed on the welding table 1, and then the motor b63 is started to drive the limiting mechanism to move, so as to position and clamp the door edge a2 and the door edge b4, and then the rib plate 3 is placed between the door edge a2 and the door edge b4, and the assembled door frame is welded by the welding mechanism 5. The contents not described in detail in this description belong to the prior art known to professional and technical personnel in this field.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rapid welding device for a civil air defense door frame, comprising a welding platform (1) and a welding mechanism (5), wherein a door edge a (2) is arranged on the top of the welding platform (1), a rib plate (3) is arranged on the inner side of the door edge a (2), and a door edge b (4) is arranged on one side of the rib plate (3), characterized in that: A welding mechanism (5) is arranged on the top of the welding table (1), the welding mechanism (5) comprising a welding frame (51) arranged on the top of the welding table (1), a moving block (52) being slidably connected to the top of the welding frame (51), a cylinder (53) being fixed to the bottom of the moving block (52), a welding head (54) being installed at the bottom of the cylinder (53), a switching mechanism (6) being arranged on the bottom of the welding table (1), the switching mechanism (6) comprising a bracket (61) fixedly connected to the bottom of the welding table (1), a hydraulic cylinder (62) being installed on the top of the bracket (61), a motor b (63) being fixedly connected to the top of the hydraulic cylinder (62), a driving gear (63) being fixedly connected to the top of the motor b (63). 64), a driven gear a (65) and a driven gear b (66) are provided on one side of the driving gear (64), a synchronous wheel a (7) is fixedly connected to the top of the driven gear a (65), a synchronous belt (8) is sleeved on the outer side of the synchronous wheel a (7), a plurality of sets of synchronous wheels b (9) are sleeved on one side of the synchronous belt (8), a worm (10) is fixedly connected to the top of the synchronous wheel b (9) and the synchronous wheel a (7), one end of the worm (10) is meshingly connected to a worm wheel (11), both sides of the worm wheel (11) are fixedly connected to a connecting shaft a (12), a threaded rod a (13) is inserted into the interior of the connecting shaft a (12), the outer side of the threaded rod a (13) is threadedly connected to a clamping block (14), The clamping block (14) has a rectangular shape. A V-shaped groove (16) is provided at one end of the threaded rod a (13) close to the connecting shaft a (12), and the V-shaped groove (16) is engaged with the wedge block (17). A plurality of groups of tooth groove bodies (18) are provided on the outer side of the wedge block (17), and the plurality of groups of tooth groove bodies (18) are distributed at equal intervals on the wedge block (17). A spring b (19) is fixedly connected to the top of the wedge block (17). A supporting mechanism (21) for supporting the rib plate (3) is provided inside the welding platform (1). The supporting mechanism (21) includes a pulley a (211) fixedly connected to the top of the driven gear b (66). The bottom of the driven gear b (66) is movably connected to the welding platform (1) via a rotating shaft. The belt body (212) is movably connected to the outer side of the pulley a (211), and a plurality of pulleys b (213) are movably connected to the welding platform (1) via a rotating shaft. The pulleys b (213) and the pulley a (211) are both slidably connected to a connecting rod (214) inside. The top of the connecting rod (214) is fixedly connected to a threaded rod b (216), one end of the threaded rod b (216) is threadedly connected to the welding platform (1), and the top of the threaded rod b (216) is movably connected to a supporting plate (217) via a bearing. The top of the welding platform (1) is provided with a plurality of ejection mechanisms (22) for lifting the door frame.

2. According to claim 1, a rapid welding device for civil air defense door frames is characterized in that: The outer side of the worm (10) is movably connected to the welding table (1) via a bearing, the outer side of the connecting shaft a (12) is movably connected to a connecting frame b (20) via a bearing, the bottom of the connecting frame b (20) is fixedly connected to the welding table (1), and one end of the threaded rod a (13) is movably connected to the welding table (1) via a bearing.

3. The rapid welding device for civil air defense door frame according to claim 1 is characterized in that: The outer side of the clamping block (14) is slidably connected to the welding table (1), the inner side of the clamping block (14) is slidably connected to a limit rod (15), one end of the limit rod (15) is fixedly connected to the welding table (1), the top of the spring b (19) is fixedly connected to the inner side of the connecting shaft a (12), and the outer side of the wedge block (17) is slidably connected to the connecting shaft a (12).

4. The rapid welding device for civil air defense door frame according to claim 1 is characterized in that: Electric push rods (55) are installed on both sides of the welding frame (51); one end of the electric push rod (55) is fixedly connected to a connecting frame a (56); the inner side of the connecting frame a (56) is movably connected to a limiting wheel (57) via a rotating shaft; the bottom of the limiting wheel (57) is fixedly connected to a protrusion (58); a connecting block (59) is provided at the bottom of the protrusion (58); one end of the connecting block (59) is fixedly connected to the welding frame (51); and the interior of the connecting block (59) is fixedly connected to a spring a (510).

5. The rapid welding device for civil air defense door frame according to claim 4 is characterized in that: One end of the spring a (510) is fixedly connected to a striking block (511), the top of the striking block (511) is fixedly connected to a toggle block (512), the outer sides of the toggle block (512) and the striking block (511) are both slidably connected to a connecting block (59), motors a (513) are installed on both sides of the bottom of the welding frame (51), the output end of the motor a (513) is fixedly connected to a running wheel (514), and the bottom of the running wheel (514) is in rolling contact with the welding table (1).

6. The rapid welding device for civil air defense door frame according to claim 1 is characterized in that: The outer side of the connecting rod (214) is rollingly connected to a plurality of groups of balls (215), and the plurality of groups of balls (215) are equidistantly distributed on the connecting rod (214); the outer side of the balls (215) is rollingly connected to the pulley a (211); the outer side of the threaded rod b (216) is slidingly connected to the synchronous wheel b (9) and the worm (10); guide rods (218) are fixedly connected to both sides of the bottom of the supporting plate (217); and the outer shape of the connecting rod (214) is rectangular.

7. The rapid welding device for civil air defense door frame according to claim 1 is characterized in that: The ejection mechanism (22) comprises a rack plate (221) fixedly connected to one side of the clamping block (14); the bottom of the rack plate (221) is meshingly connected to a connecting gear (222); a connecting shaft b (223) is passed through the interior of the connecting gear (222); and a spring c (224) is fixedly connected to the interior of the connecting shaft b (223).

8. The rapid welding device for civil air defense door frame according to claim 7 is characterized in that: One end of the spring c (224) is fixedly connected to a clamping block (225), the outer side of the clamping block (225) is slidably connected to the connecting shaft b (223), a ratchet groove (226) is provided inside the connecting gear (222), and the ratchet groove (226) is engaged with the clamping block (225), and the outer side of the connecting shaft b (223) is fixedly connected to a limiting ring (227).

9. The rapid welding device for civil air defense door frame according to claim 8 is characterized in that: The outer side of the limit ring (227) is slidably connected to the connecting gear (222); one end of the connecting shaft b (223) is fixedly connected to a lever (228); one end of the lever (228) is rollingly abutted against a rotating plate (229) via a roller; one side of the rotating plate (229) is movably connected to the welding table (1) via a rotating shaft; and one end of the lever (228) is movably connected to the welding table (1) via a rotating shaft.

10. A rapid welding process for civil air defense door frames, characterized in that: The following steps are involved: S1, placing the door edge a (2) and the door edge b (4) on the welding table (1), and then starting the motor b (63) to drive the clamping mechanism to move, so as to clamp the door edge a (2) and the door edge b (4) in the center; S2, placing the rib plate (3) between the door edge a (2) and the door edge b (4), and supporting it through the supporting mechanism (21); S3, starting the welding mechanism (5), which moves around the door frame and welds the connection between the door edge a (2), the rib plate (3) and the door edge b (4) through the internal welding head (54); S4. After welding is completed, the limit mechanism for limiting the door frame is cancelled, and the door frame is removed from the welding table (1).

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