A welding equipment for producing civil air defense doors

Abstract

The present invention relates to the technical field of welding equipment, and in particular to a welding equipment for producing civil air defense doors. A welding equipment for producing civil air defense doors comprises a processing mechanism, and the processing mechanism comprises a first drill and a welding assembly. A plurality of first welding through grooves and a plurality of second welding through grooves are first drilled by the first drill. The welding assembly is first spot welded at the first welding through groove and the second welding through groove, so that the molten material formed by the spot welding can flow into the first welding through groove and the second welding through groove, thereby preventing the molten material from forming uneven welds on the inner and outer walls of the square frame, affecting the subsequent welding quality. The present invention provides a welding equipment for producing civil air defense doors to solve the problem that the existing welding equipment adopts external spot welding, has a poor fixing effect, and the position of the spot welding is easy to produce a height difference with the weld of the subsequent welding, thereby causing a local stress difference, thereby reducing the welding quality.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, and in particular to welding equipment for producing civil air defense doors. Background Art

[0002] Welding, also known as fusion, is a manufacturing process and technology that uses heating, high temperature or high pressure to join metals or other thermoplastic materials such as plastics. Welding equipment is the equipment required to implement the welding process, including welding machines, welding process equipment and welding auxiliary equipment. The main types include manual arc welders, submerged arc welders, gas shielded arc welders, spot welders, projection welders, seam welders, butt welders, electroslag welders, plasma arc welders, high frequency welders, electron beam welders, beam welders, ultrasonic welders, friction welders, cold pressure welders and brazing machines.

[0003] Civil defense doors are important equipment for the entrances and exits of people's defense projects. They have multiple functions such as waterproof, explosion-proof, and anti-air pollution. When producing civil defense doors, it is necessary to weld the plates that make up the frame together on the assembly platform and process the welds. During the welding process, spot welding will be performed first, and then welding will be performed. The main purpose of spot welding is to fix the position of the workpiece before formal welding to ensure the accuracy and stability of welding. Spot welding applies pressure and current at the welding position to make the metal contact points melt and solidify quickly to form small and concentrated welds. After completing spot welding, continuous welding is performed next. Continuous welding is based on spot welding, and the welding rod and the workpiece are melted together through continuous arc discharge to form a continuous weld.

[0004] For example, the Chinese invention patent with announcement number CN117600710B provides a welding device for the production of civil air defense doors, which welds the door leaf through a set welding platform. The door leaf on the flipping platform is flipped through a set flipping mechanism, and no manual cooperation is required for suspension flipping. However, when welding the civil air defense door, the welding equipment will first perform spot welding, and the spot welding positions are relatively random, which limits the firmness of the spot welding. In addition, external spot welding is used during spot welding, which has a poor fixing effect, and the position of the spot welding will easily produce a height difference with the weld of the subsequent welding, thereby causing a local stress difference, thereby reducing the welding quality. Due to the influence of gravity, the molten material during welding is unevenly distributed between the door leaf and the door frame, thereby reducing the welding quality. Summary of the invention

[0005] The present invention provides a welding device for the production of civil air defense doors to solve the problem that the existing welding equipment uses external spot welding, the fixing effect is poor, and the position of the spot welding will easily produce a height difference with the weld of the subsequent welding, thereby causing a local stress difference and further reducing the welding quality.

[0006] The present invention adopts the following technical scheme: a welding device for producing civil air defense doors, used for welding civil air defense doors, including a frame, a clamping mechanism and a processing mechanism. The clamping mechanism includes a placement plate and a transmission assembly, the placement plate is tiltedly arranged on the frame, the civil air defense door is placed on the placement plate, the civil air defense door and the placement plate are arranged in parallel, the civil air defense door includes a bottom plate and a square frame, the square frame, the bottom plate and the placement plate are successively abutted along a first direction, and the first direction is perpendicular to the plane where the placement plate is located. The side of the square frame abutting against the bottom plate is a first contact surface, and the side of the bottom plate abutting against the square frame is a second contact surface.

[0007] The processing mechanism includes a first drill and a welding assembly, wherein the first drill is used to drill a plurality of first welding through grooves on the first contact surface of the square frame, wherein the plurality of first welding through grooves are evenly distributed along the circumference of the square frame, wherein each first welding through groove includes a first through groove and a second through groove, wherein the first through groove and the second through groove are cross-arranged, and the first drill is used to drill a plurality of second welding through grooves on the second contact surface of the bottom plate, wherein each second welding through groove matches a first welding through groove.

[0008] The welding assembly includes a first welding gun and a second welding gun, both of which are slidably arranged on the frame along a second direction, the second direction is a horizontal direction, and the upper side and the lower side of the civil air defense door are parallel to the second direction. The transmission assembly is used to drive the civil air defense door to rotate, and make the four side walls of the square frame parallel to the second direction.

[0009] The first welding gun is located on the upper side of the second welding gun, and the welding assembly includes a first working state and a second working state. The first working state of the welding assembly is that the first welding gun and the second welding gun spot weld the first welding groove and the second welding groove respectively, and the second working state of the welding assembly is that the first welding gun welds the outer wall of the square frame and the second contact surface of the bottom plate, and the second welding gun welds the inner wall of the square frame and the second contact surface of the bottom plate.

[0010] Further, the four directions of the square frame on the circumference perpendicular to the first direction are the first side, the second side, the third side and the fourth side, respectively. The first side and the second side of the square frame are parallel to each other, and the third side and the fourth side of the square frame are parallel to each other. The square frame has a third working state and a fourth working state. The third working state of the square frame is that the first side and the second side of the square frame are respectively located at the upper and lower sides of the frame, and the first side and the second side of the square frame are parallel to the second direction. The fourth working state of the square frame is that the third side and the fourth side of the square frame are respectively located at the upper and lower sides of the frame.

[0011] Furthermore, the processing mechanism also includes a second drill, which includes a first manipulator and a drill bit. The first manipulator is arranged on the frame, and the drill bit is rotatably arranged on the first manipulator.

[0012] The first welding through groove has a first state and a second state. The first state of the first welding through groove is that the first welding through groove on the first side of the square frame is connected to the outer side wall of the first side of the square frame, and is not connected to the inner side wall of the first side of the square frame. The first welding through groove on the third side of the square frame is connected to the outer side wall of the third side of the square frame, and is not connected to the inner side wall of the third side of the square frame. The first welding through groove on the second side of the square frame is connected to the inner side wall of the second side of the square frame, and is not connected to the outer side wall of the second side of the square frame. The first welding through groove on the fourth side of the square frame is connected to the inner side wall of the fourth side of the square frame, and is not connected to the outer side wall of the fourth side of the square frame. The second state of the first welding through groove is that the first through groove in each first welding through groove is connected to the inner side wall and the outer side wall of the square frame. The second drill is used to drill through the first through groove, so that the first welding through groove is transformed from the first state to the second state, and the first welding gun is used to spot weld the second through groove.

[0013] Furthermore, a first connecting plate and a second connecting plate are provided on the frame, and both the first connecting plate and the second connecting plate can slide along the second direction, and the first manipulator is fixedly provided on the first connecting plate. The first welding gun includes a second manipulator and a first welding head, the second manipulator is fixedly provided on the first connecting plate, and the first welding head is provided on the second manipulator. The second welding gun includes a third manipulator and a second welding head, the third manipulator is fixedly provided on the second connecting plate, and the second welding head is provided on the third manipulator.

[0014] Furthermore, the processing mechanism also includes a grinding assembly, the grinding assembly includes a fourth manipulator and a grinding knife, the fourth manipulator is fixedly arranged on the first connecting plate, the grinding knife is rotatably arranged on the fourth manipulator, and the grinding knife is used to grind an outer welding groove at the connection between the outer side wall of the square frame and the second contact surface of the bottom plate, and grind an inner welding groove at the connection between the inner side wall of the square frame and the second contact surface of the bottom plate. The first welding gun welds at the outer welding groove, and the second welding gun welds at the inner welding groove.

[0015] Furthermore, the frame includes a vertical plate and a horizontal plate, the vertical plate is provided with a first slide groove, a second slide groove and a vertical groove, the first slide groove and the second slide groove are both arranged along the second direction. The vertical groove connects the first slide groove and the second slide groove. The first connecting plate is slidably arranged in the first slide groove or the second slide groove.

[0016] Furthermore, the second drill, the grinding assembly and the first welding gun are sequentially distributed along the second direction. The processing mechanism also includes a blowing assembly, which includes a first fan, a second fan, a third fan and a fourth fan, which are fixedly arranged on the first connecting plate, and the first fan corresponds to the second drill, and is used for blowing air to remove chips. The second fan corresponds to the grinding assembly, and is used for blowing air to remove chips. The third fan corresponds to the first welding gun, and is used for air suction. The fourth fan is fixedly arranged on the second connecting plate, and the fourth fan corresponds to the second welding gun, and is used for air suction.

[0017] Furthermore, the third fan and the fourth fan are both provided with wind shields, and the wind shields are used to shield the first welding through slot and the second welding through slot.

[0018] Furthermore, the clamping mechanism also includes a limit plate and two clamping components. The placement plate includes a connecting frame and a rotating disk, the connecting frame is fixedly arranged on the frame. The rotating disk is rotatably arranged on the connecting frame, and the rotating disk can rotate around its own axis.

[0019] The two clamping assemblies are sequentially distributed along the second direction. Each clamping assembly includes a first baffle and two second baffles, the second baffles are fixedly arranged on the rotating disk, and the two second baffles are respectively against the inner side wall and the outer side wall of the bottom plate. The first baffle is rotatably arranged on the second baffle abutting against the outer side wall, and the first baffle is used to abut against the outer side wall of the square frame.

[0020] The limiting plate and the placing plate are arranged in parallel, and the lower side of the limiting plate is fixedly connected to the horizontal plate. The upper side of the limiting plate is fixedly provided with a third baffle plate and a fourth baffle plate, the third baffle plate abuts against the lower side of the bottom plate, and the fourth baffle plate abuts against the outer side wall of the square frame. The limiting plate can be retracted.

[0021] Furthermore, a welding device for producing civil air defense doors also includes a pushing mechanism, which includes two hydraulic cylinders, which are fixed on a frame, arranged along a second direction, and respectively arranged on both sides of a placing plate along the second direction, and the extended ends of the two hydraulic cylinders are used to resist the civil air defense door.

[0022] The beneficial effect of the present invention is: a welding device for producing civil defense doors of the present invention, through the set processing mechanism, first drills the first contact surface of the square frame and the second contact surface of the base plate through a first drill, and then drills out a plurality of first welding grooves and a plurality of second welding grooves.

[0023] Then, the civil air defense door is placed on the placement plate, and the first welding gun and the second welding gun are started. The welding assembly is now in the first working state. The first welding gun and the second welding gun perform spot welding on the multiple first welding grooves and the multiple second welding grooves. The multiple first welding grooves and the multiple second welding grooves are evenly distributed to avoid random unevenness in the subsequent spot welding positions, thereby affecting the quality of the weld. The spot welding position is within the first welding groove and the second welding groove, so that the molten material formed by the spot welding can flow into the first welding groove and the second welding groove, avoiding the molten material from forming uneven welds on the inner and outer walls of the square frame, which affects the subsequent welding quality.

[0024] When the welding assembly is in the second working state, the first welding gun welds the outer welding groove on the upper side of the square frame, and the second welding gun welds the inner welding groove on the lower side of the square frame. Since the placement plate is arranged at an angle, the molten material generated during welding is evenly distributed on the square frame and the bottom plate, thereby improving the welding quality. The molten material enters the first welding through groove and the plurality of second welding through grooves and solidifies. The first through groove and the second through groove are arranged crosswise, which increases the fixing effect of the square frame and the bottom plate and improves the welding strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 A schematic structural diagram of a welding device for producing civil air defense doors provided in an embodiment of the present invention;

[0027] Figure 2 A front view of a welding device for producing civil air defense doors provided by an embodiment of the present invention;

[0028] Figure 3 A side view of a welding device for producing civil air defense doors provided by an embodiment of the present invention;

[0029] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0030] Figure 5 for Figure 3 Sectional view at AA in the middle;

[0031] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0032] Figure 7 A partial structural schematic diagram of a welding device for producing civil air defense doors provided in an embodiment of the present invention.

[0033] In the figure: 100, frame; 101, vertical plate; 102, horizontal plate; 103, first slide; 104, second slide; 110, first connecting plate; 120, second connecting plate; 201, placement plate; 202, rotating disk; 203, connecting frame; 204, first baffle; 205, second baffle; 206, limit plate; 207, third slide; 300, square frame; 301, first through slot; 302, second through slot; 310, bottom plate; 410, first welding gun; 420, second welding gun; 430, second drill; 440, grinding knife; 450, first fan; 451, second fan; 452, third fan; 453, wind shield; 500, external welding slot. DETAILED DESCRIPTION

[0034] 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.

[0035] Reference Figures 1 to 7 As shown, a welding device for producing civil air defense doors provided in an embodiment of the present invention is used for welding civil air defense doors, and includes a frame 100, a clamping mechanism, and a processing mechanism. The clamping mechanism includes a placement plate 201 and a transmission assembly. The placement plate 201 is tiltedly arranged on the frame 100, and the civil air defense door is placed on the placement plate 201. The civil air defense door and the placement plate 201 are arranged in parallel. The civil air defense door includes a bottom plate 310 and a square frame 300. The square frame 300, the bottom plate 310, and the placement plate 201 are successively abutted along a first direction, and the first direction is perpendicular to the plane where the placement plate 201 is located. The side of the square frame 300 that abuts against the bottom plate 310 is a first contact surface, and the side of the bottom plate 310 that abuts against the square frame 300 is a second contact surface.

[0036] The processing mechanism includes a first drill and a welding assembly. The first drill is arranged on the frame 100. The first drill is used to drill a plurality of first welding through grooves on the first contact surface of the square frame 300. The plurality of first welding through grooves are evenly distributed along the circumference of the square frame 300. Each first welding through groove includes a first through groove 301 and a second through groove 302. The first through groove 301 and the second through groove 302 are arranged crosswise. The first drill is used to drill a plurality of second welding through grooves on the second contact surface of the bottom plate 310. Each second welding through groove matches a first welding through groove.

[0037] The welding assembly includes a first welding gun 410 and a second welding gun 420. The first welding gun 410 and the second welding gun 420 are both slidably disposed on the frame 100 along a second direction. The second direction is a horizontal direction. The upper side and the lower side of the civil air defense door are parallel to the second direction. The transmission assembly is used to drive the civil air defense door to rotate and enable the four side walls of the square frame 300 to be parallel to the second direction.

[0038] The first welding gun 410 is located on the upper side of the second welding gun 420, and the welding assembly includes a first working state and a second working state. The first working state of the welding assembly is that the first welding gun 410 and the second welding gun 420 spot weld the first welding groove and the second welding groove respectively, and the second working state of the welding assembly is that the first welding gun 410 welds the outer wall of the square frame 300 and the second contact surface of the bottom plate 310, and the second welding gun 420 welds the inner wall of the square frame 300 and the second contact surface of the bottom plate 310.

[0039] The working process of a welding device for producing civil air defense doors includes a preparatory work stage, a spot welding stage and a welding stage.

[0040] Preparatory work stage: firstly, the first contact surface of the square frame 300 and the second contact surface of the bottom plate 310 are drilled by a first drill, and then a plurality of first welding through grooves and a plurality of second welding through grooves are drilled. Then, the civil air defense door is placed on the placement plate 201, at which time, the two sides of the civil air defense door are at the upper and lower sides, and the sides at the upper and lower sides are parallel to the second direction, and at this time, each first welding through groove is connected to a second welding through groove.

[0041] Spot welding stage: start the first welding gun 410 and the second welding gun 420, and the welding assembly is in the first working state. The first welding gun 410 and the second welding gun 420 perform spot welding on the plurality of first welding through grooves and the second welding through grooves. The plurality of first welding through grooves and the plurality of second welding through grooves are evenly distributed to avoid random unevenness of the subsequent spot welding positions, thereby affecting the quality of the weld. The spot welding positions are within the first welding through groove and the second welding through groove, so that the molten material formed by the spot welding can flow into the first welding through groove and the second welding through groove, thereby avoiding the molten material from forming uneven welds on the inner and outer walls of the square frame 300, thereby affecting the subsequent welding quality.

[0042] Welding stage: The welding assembly is in the second working state. The first welding gun 410 welds the outer welding groove 500 on the upper side of the square frame 300, and the second welding gun 420 welds the inner welding groove on the lower side of the square frame 300. After the side walls of the civil air defense door on the upper and lower sides are welded, the civil air defense door is rotated so that the two sides of the civil air defense door that are not welded are rotated to the upper and lower sides, and then the two sides are welded again until the civil air defense door is completely welded.

[0043] In this embodiment, the four directions of the square frame 300 in the circumferential direction perpendicular to the first direction are respectively the first side, the second side, the third side and the fourth side. The first side and the second side of the square frame 300 are parallel to each other, and the third side and the fourth side of the square frame 300 are parallel to each other. The square frame 300 has a third working state and a fourth working state. The third working state of the square frame 300 is that the first side and the second side of the square frame 300 are respectively located at the upper and lower sides of the frame 100, and the first side and the second side of the square frame 300 are parallel to the second direction. The third side and the fourth side of the square frame 300 are sequentially distributed along the second direction. The fourth working state of the square frame 300 is that the third side and the fourth side of the square frame 300 are respectively located at the upper and lower sides of the frame 100, and the first side and the second side of the square frame 300 are sequentially distributed along the second direction.

[0044] In this embodiment, the processing mechanism further includes a second drill 430 , which includes a first manipulator and a drill bit. The first manipulator is disposed on the frame 100 , and the drill bit is rotatably disposed on the first manipulator, and the drill bit is parallel to the square frame 300 .

[0045] The first welding through groove has a first state and a second state. The first state of the first welding through groove is that the first welding through groove on the first side of the square frame 300 is connected to the outer side wall of the first side of the square frame 300, and is not connected to the inner side wall of the first side of the square frame 300. The first welding through groove on the third side of the square frame 300 is connected to the outer side wall of the third side of the square frame 300, and is not connected to the inner side wall of the third side of the square frame 300. The first welding through groove on the second side of the square frame 300 is connected to the inner side wall of the second side of the square frame 300, and is not connected to the outer side wall of the second side of the square frame 300. The first welding through groove on the fourth side of the square frame 300 is connected to the inner side wall of the fourth side of the square frame 300, and is not connected to the outer side wall of the fourth side of the square frame 300. The second state of the first welding through groove is that the first through groove 301 in each first welding through groove is connected to both the inner side wall and the outer side wall of the square frame 300. The second drill 430 is used to drill through the first through groove 301 , so that the first welding through groove is transformed from the first state to the second state, and the first welding gun 410 is used to perform spot welding on the second through groove 302 .

[0046] When the first welding groove is in the first state, the first groove 301 does not penetrate the square frame 300, and the first welding groove and the second welding groove are spot welded, thereby preventing the molten material during spot welding from flowing into the first groove 301 through the second groove 302 and flowing onto the inner wall or outer wall of the square frame 300, thereby affecting subsequent welding. When the first welding groove is in the second state, the molten material during welding enters the first groove 301 and the second groove 302 and solidifies, and the first groove 301 penetrates the square frame 300, thereby increasing the fixing effect of the square frame 300 and the bottom plate 310.

[0047] In this embodiment, a first connecting plate 110 and a second connecting plate 120 are provided on the frame 100, and both the first connecting plate 110 and the second connecting plate 120 can slide along the second direction, and the first manipulator is fixedly provided on the first connecting plate 110. The first welding gun 410 includes a second manipulator and a first welding head, the second manipulator is fixedly provided on the first connecting plate 110, and the first welding head is provided on the second manipulator. The second welding gun 420 includes a third manipulator and a second welding head, the third manipulator is fixedly provided on the second connecting plate 120, and the second welding head is provided on the third manipulator.

[0048] In this embodiment, the processing mechanism also includes a grinding assembly, which includes a fourth manipulator and a grinding knife 440. The fourth manipulator is fixedly disposed on the first connecting plate 110, and the grinding knife 440 is rotatably disposed on the fourth manipulator. The grinding knife 440 is used to grind an outer welding groove 500 at the connection between the outer wall of the square frame 300 and the second contact surface of the bottom plate 310, and to grind an inner welding groove at the connection between the inner wall of the square frame 300 and the second contact surface of the bottom plate 310. The first welding gun 410 welds at the outer welding groove 500, and the second welding gun 420 welds at the inner welding groove.

[0049] In this embodiment, the rack 100 includes a vertical plate 101 and a horizontal plate 102, the vertical plate 101 is vertically arranged, the horizontal plate 102 is horizontally arranged, and the vertical plate 101 is fixedly arranged on the horizontal plate 102. The vertical plate 101 is provided with a first slide groove 103, a second slide groove 104 and a vertical groove, the first slide groove 103 and the second slide groove 104 are both arranged along the second direction, and the first slide groove 103 and the second slide groove 104 are sequentially distributed along the up and down direction. The vertical groove is vertically arranged, and the vertical groove connects the first slide groove 103 and the second slide groove 104. The first connecting plate 110 is slidably arranged in the first slide groove 103 or the second slide groove 104.

[0050] The square frame 300 is rectangular, and when the wide sides of the square frame 300 are at the upper and lower sides, the first connecting plate 110 is in the first sliding groove 103. When the long sides of the square frame 300 are at the upper and lower sides, the first connecting plate 110 is in the first sliding groove 103, and the position of the first connecting plate 110 is adapted to the shape of the square frame 300.

[0051] In this embodiment, the second drill 430, the grinding assembly and the first welding gun 410 are distributed in sequence along the second direction. The processing mechanism also includes a blowing assembly, which includes a first fan 450, a second fan 451, a third fan 452 and a fourth fan, the first fan 450, the second fan 451 and the third fan 452 are fixedly arranged on the first connecting plate 110, and the first fan 450, the second fan 451 and the third fan 452 are arranged on the lower side of the second drill 430, the grinding assembly and the first welding gun 410, and the first fan 450 and the second drill 430 correspond to each other for air blowing and chip removal. The second fan 451 corresponds to the grinding assembly for air blowing and chip removal. The third fan 452 corresponds to the first welding gun 410 for air suction. The fourth fan is fixedly arranged on the second connecting plate 120, and the fourth fan corresponds to the second welding gun 420 for air suction.

[0052] In other embodiments, there are two second drills 430 and two grinding assemblies, wherein one second drill 430, one grinding assembly and the first welding gun 410 are disposed on the first connecting plate 110. Another second drill 430, another grinding assembly and the second welding gun 420 are disposed on the second connecting plate 120, thereby increasing the welding speed.

[0053] In this embodiment, the third fan 452 and the fourth fan are both provided with a windshield 453, which is used to shield the first welding slot and the second welding slot, and the windshield 453 does not completely shield the third fan 452 and the fourth fan. The third fan 452 and the fourth fan suck the molten material into the first welding slot and the second welding slot, which is used to increase the fluidity of the molten material, assist the molten material to fill the first slot 301 and the second slot 302, and improve the welding strength. The windshield 453 prevents the molten material in the first slot 301 and the second slot 302 from being completely sucked into the third fan 452 and the fourth fan, and only increases the fluidity of the molten material.

[0054] In this embodiment, the clamping mechanism further includes a limit plate 206 and two clamping assemblies. The placement plate 201 includes a connecting frame 203 and a rotating disk 202, and the connecting frame 203 is fixedly arranged on the frame 100. The rotating disk 202 is rotatably arranged on the connecting frame 203, and the rotating disk 202 can rotate around its own axis. A first motor is arranged on the frame 100, and the output shaft of the first motor is fixedly connected to the rotating disk 202.

[0055] The clamping assembly is disposed on the rotating disk 202, and the two clamping assemblies are sequentially distributed along the second direction. Each clamping assembly includes a first baffle 204 and two second baffles 205, the second baffles 205 are fixedly disposed on the rotating disk 202, the two second baffles 205 are sequentially distributed along the second direction, and the two second baffles 205 respectively abut against the inner side wall and the outer side wall of the bottom plate 310. The first baffle 204 is rotatably disposed on the second baffle 205 abutting against the outer side wall, and the first baffle 204 is used to abut against the outer side wall of the third side or the fourth side of the square frame 300.

[0056] The limiting plate 206 is arranged in parallel with the placing plate 201, and the lower side of the limiting plate 206 is fixedly connected to the horizontal plate 102. The upper side of the limiting plate 206 is fixedly provided with a third baffle and a fourth baffle, the third baffle abuts against the lower side of the bottom plate 310, and the fourth baffle abuts against the outer side wall of the square frame 300. The limiting plate 206 can be extended and retracted, and a third slide groove 207 is provided on the limiting plate 206, and the third slide groove 207 is arranged along the second direction, and the second connecting plate 120 is slidably arranged in the third slide groove 207.

[0057] The first connecting plate 110 is fixedly provided with a second motor, the output shaft of which is fixedly provided with a first rotating wheel, which is in frictional contact with the vertical plate 101. The second connecting plate 120 is fixedly provided with a third motor, the output shaft of which is fixedly provided with a second rotating wheel, which is in frictional contact with the limiting plate 206.

[0058] In this embodiment, a welding device for producing civil defense doors also includes a pushing mechanism, which includes two hydraulic cylinders. The hydraulic cylinders are fixedly mounted on a frame 100, and the hydraulic cylinders are arranged along a second direction. The two hydraulic cylinders are respectively arranged on both sides of a placement plate 201 along the second direction, and the extended ends of the two hydraulic cylinders are used to resist the civil defense door.

[0059] The working process of a welding device for producing civil air defense doors includes a preparatory work stage, a spot welding stage and a welding stage.

[0060] Preparatory work stage: First, the first contact surface of the square frame 300 and the second contact surface of the bottom plate 310 are drilled by the first drill, and then a plurality of first welding grooves and a plurality of second welding grooves are drilled, and at this time, the first welding grooves are in the first state. Then, the civil air defense door is placed on the placement plate 201, and the clamping assembly clamps the third side and the fourth side of the square frame 300. At this time, the square frame 300 is in the third working state, and the first side and the second side of the square frame 300 are respectively located on the upper and lower sides of the frame 100. And each first welding groove corresponds to a second welding groove. Multiple first welding grooves and multiple second welding grooves are evenly distributed to avoid random unevenness in the subsequent spot welding positions, thereby affecting the quality of the weld.

[0061] Spot welding stage: start the second motor and the third motor, at this time the first connecting plate 110 is in the first slide groove 103, driving the first connecting plate 110 and the second connecting plate 120 to move along the second direction respectively. Start the first welding gun 410 and the second welding gun 420, at this time the welding assembly is in the first working state. The first welding gun 410 spot welds the first welding groove and the second welding groove on the first side of the square frame 300, and the second welding gun 420 spot welds the first welding groove and the second welding groove on the second side of the square frame 300, and the spot welding position is in the second groove 302.

[0062] Then, the first motor is started, and the first motor drives the rotating disk 202 to rotate. When the rotating disk 202 rotates, the civil air defense door is driven to rotate synchronously, so that the third side and the fourth side of the square frame 300 are respectively located at the upper and lower sides of the frame 100, and the square frame 300 is in the fourth working state. At this time, the first connecting plate 110 is moved into the second slide groove 104. The first welding gun 410 spot welds the first welding groove and the second welding groove on the third side of the square frame 300, and the second welding gun 420 spot welds the first welding groove and the second welding groove on the fourth side of the square frame 300.

[0063] The spot welding position is within the second through groove 302, so that the molten material formed by the spot welding can flow into the second through groove 302, thereby preventing the molten material from forming uneven welds on the inner and outer walls of the square frame 300, thereby affecting the subsequent welding quality. During spot welding, the first through groove 301 does not penetrate the square frame 300, thereby preventing the molten material during spot welding from flowing into the first through groove 301 through the second through groove 302 and flowing onto the inner or outer wall of the square frame 300.

[0064] Welding stage: First, the first through slots 301 are drilled through in sequence by the second drill 430, and the first welding through slots are in the second state. When the second drill 430 is drilling, the first fan 450 is started to blow away the chips.

[0065] The grinding knife 440 is then used to grind the outer welding groove 500 at the connection between the outer side wall of the square frame 300 and the second contact surface of the bottom plate 310, and then grind the inner welding groove at the connection between the inner side wall of the square frame 300 and the second contact surface of the bottom plate 310. When the grinding knife 440 is grinding, the second fan 451 is started, and the second fan 451 blows away the chips. In this way, the connection surface between the square frame 300 and the bottom plate 310 is clean, and the welding connection effect is improved.

[0066] Afterwards, the square frame 300 is placed in the third working state, and the welding assembly is started again, and the welding assembly is placed in the second working state.

[0067] The first connecting plate 110 and the second connecting plate 120 are moved, and the first welding gun 410 first welds the outer welding groove 500 on the first side of the square frame 300, and the second welding gun 420 first welds the inner welding groove on the second side of the square frame 300. Since the placement plate 201 is arranged at an angle, the molten material generated during welding is evenly distributed on the square frame 300 and the bottom plate 310, thereby improving the welding quality. The molten material during welding enters the first through groove 301 and the second through groove 302 and solidifies. Since the first through groove 301 and the second through groove 302 are arranged crosswise, the fixing effect of the square frame 300 and the bottom plate 310 is increased. At the same time, the third fan 452 and the fourth fan are started, and the third fan 452 and the fourth fan suck the molten material into the first welding through groove and the second welding through groove, and the molten material is supplemented to fill the first through groove 301 and the second through groove 302, thereby improving the welding strength.

[0068] After that, the air defense door is rotated to make the square frame 300 in the third working state. Since the first side and the second side of the square frame 300 have been welded, the second motor and the third motor are turned off, and the hydraulic cylinder is started. The two hydraulic cylinders push the air defense door to move back and forth along the second direction until the second welding gun 420 welds the outer welding groove 500 of the third side of the square frame 300, and the fourth welding gun welds the inner welding groove of the fourth side of the square frame 300. Then, the air defense door is rotated until the inner and outer walls of the square frame 300 are all welded.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding device for producing civil air defense doors, used for welding civil air defense doors, characterized by: It includes a frame, a clamping mechanism and a processing mechanism; the clamping mechanism includes a placement plate and a transmission assembly, the placement plate is tiltedly arranged on the frame, the civil air defense door is placed on the placement plate, the civil air defense door and the placement plate are arranged in parallel, the civil air defense door includes a bottom plate and a square frame, the square frame, the bottom plate and the placement plate are abutted against each other in sequence along a first direction, and the first direction is perpendicular to the plane where the placement plate is located; the side of the square frame abutting against the bottom plate is a first contact surface, and the side of the bottom plate abutting against the square frame is a second contact surface; The processing mechanism includes a first drill and a welding assembly, wherein the first drill is used to drill a plurality of first welding through grooves on a first contact surface of the square frame, wherein the plurality of first welding through grooves are evenly distributed along the circumference of the square frame, wherein each first welding through groove includes a first through groove and a second through groove, wherein the first through groove and the second through groove are cross-arranged; and the first drill is used to drill a plurality of second welding through grooves on a second contact surface of the bottom plate, wherein each second welding through groove matches a first welding through groove; The welding assembly includes a first welding gun and a second welding gun, both of which are slidably arranged on the frame along a second direction, the second direction is a horizontal direction, and the upper side and the lower side of the civil air defense door are parallel to the second direction; the transmission assembly is used to drive the civil air defense door to rotate, and make the four side walls of the square frame parallel to the second direction; The four directions of the square frame on the circumferential direction perpendicular to the first direction are respectively the first side, the second side, the third side and the fourth side, the first side and the second side of the square frame are parallel to each other, and the third side and the fourth side of the square frame are parallel to each other; the square frame has a third working state and a fourth working state, the third working state of the square frame is that the first side and the second side of the square frame are respectively located at the upper and lower sides of the frame, and the first side and the second side of the square frame are parallel to the second direction; the fourth working state of the square frame is that the third side and the fourth side of the square frame are respectively located at the upper and lower sides of the frame; The processing mechanism also includes a second drill, which includes a first manipulator and a drill bit, the first manipulator is arranged on the frame, and the drill bit is rotatably arranged on the first manipulator; The first welding through slot has a first state and a second state, the first state of the first welding through slot is that the first welding through slot on the first side of the square frame is connected to the outer side wall of the first side of the square frame, and is not connected to the inner side wall of the first side of the square frame; the first welding through slot on the third side of the square frame is connected to the outer side wall of the third side of the square frame, and is not connected to the inner side wall of the third side of the square frame; the first welding through slot on the second side of the square frame is connected to the inner side wall of the second side of the square frame, and is not connected to the outer side wall of the second side of the square frame; the first welding through slot on the fourth side of the square frame is connected to the inner side wall of the fourth side of the square frame, and is not connected to the outer side wall of the fourth side of the square frame; the second state of the first welding through slot is that the first through slot in each first welding through slot is connected to both the inner side wall and the outer side wall of the square frame; the second drill is used to drill through the first through slot, so that the first welding through slot is transformed from the first state to the second state; The first welding gun is on the upper side of the second welding gun, and the welding assembly includes a first working state and a second working state. The first working state of the welding assembly is that the first welding gun and the second welding gun spot weld the first welding slot and the second welding slot respectively, and when the first welding slot is in the first state, the welding assembly is in the first working state; the second working state of the welding assembly is that the first welding gun welds the outer wall of the square frame and the second contact surface of the bottom plate, and the second welding gun welds the inner wall of the square frame and the second contact surface of the bottom plate; when the first welding slot is in the second state, the welding assembly is in the second working state.

2. The welding equipment for civil air defense door production according to claim 1 is characterized in that: A first connecting plate and a second connecting plate are provided on the frame, both of which can slide along the second direction, and the first manipulator is fixedly arranged on the first connecting plate; the first welding gun includes a second manipulator and a first welding head, the second manipulator is fixedly arranged on the first connecting plate, and the first welding head is arranged on the second manipulator; the second welding gun includes a third manipulator and a second welding head, the third manipulator is fixedly arranged on the second connecting plate, and the second welding head is arranged on the third manipulator.

3. The welding equipment for civil air defense door production according to claim 2 is characterized in that: The processing mechanism also includes a grinding assembly, which includes a fourth manipulator and a grinding knife. The fourth manipulator is fixedly arranged on the first connecting plate, and the grinding knife is rotatably arranged on the fourth manipulator. The grinding knife is used to grind an outer welding groove at the connection between the outer side wall of the square frame and the second contact surface of the bottom plate, and to grind an inner welding groove at the connection between the inner side wall of the square frame and the second contact surface of the bottom plate; the first welding gun welds at the outer welding groove, and the second welding gun welds at the inner welding groove.

4. The welding equipment for civil air defense door production according to claim 2 is characterized in that: The frame includes a vertical plate and a horizontal plate. The vertical plate is provided with a first slide groove, a second slide groove and a vertical groove. The first slide groove and the second slide groove are both arranged along the second direction. The vertical groove connects the first slide groove and the second slide groove. The first connecting plate is slidably arranged in the first slide groove or the second slide groove.

5. The welding equipment for civil air defense door production according to claim 3 is characterized in that: The second drill, the grinding assembly and the first welding gun are distributed in sequence along the second direction; the processing mechanism also includes a blowing assembly, which includes a first fan, a second fan, a third fan and a fourth fan, and the first fan, the second fan and the third fan are fixedly arranged on the first connecting plate, and the first fan corresponds to the second drill, and is used for blowing air to remove chips; the second fan corresponds to the grinding assembly, and is used for blowing air to remove chips; the third fan corresponds to the first welding gun, and is used for air suction; the fourth fan is fixedly arranged on the second connecting plate, and the fourth fan corresponds to the second welding gun, and is used for air suction.

6. The welding equipment for civil air defense door production according to claim 5 is characterized in that: The third fan and the fourth fan are both provided with wind shields, which are used to shield the first welding through slot and the second welding through slot.

7. The welding equipment for civil air defense door production according to claim 1 is characterized in that: The clamping mechanism includes a limit plate and two clamping components; the placement plate includes a connecting frame and a rotating disk, the connecting frame is fixedly arranged on the frame; the rotating disk is rotatably arranged on the connecting frame, and the rotating disk can rotate around its own axis; The two clamping assemblies are sequentially distributed along the second direction; each clamping assembly includes a first baffle and two second baffles, the second baffles are fixedly arranged on the rotating disk, and the two second baffles are respectively against the inner side wall and the outer side wall of the bottom plate; the first baffle is rotatably arranged on the second baffle abutting against the outer side wall, and the first baffle is used to abut against the outer side wall of the square frame; The limiting plate and the placing plate are arranged in parallel, and the lower side of the limiting plate is fixedly connected to the horizontal plate; the third baffle plate and the fourth baffle plate are fixedly arranged on the upper side of the limiting plate, the third baffle plate abuts against the lower side surface of the bottom plate, and the fourth baffle plate abuts against the outer side wall of the square frame; the limiting plate can be telescopic.

8. The welding equipment for civil air defense door production according to claim 7 is characterized in that: It also includes a pushing mechanism, which includes two hydraulic cylinders. The hydraulic cylinders are fixed on the frame, the hydraulic cylinders are arranged along the second direction, and the two hydraulic cylinders are respectively arranged on both sides of the placement plate along the second direction. The extended ends of the two hydraulic cylinders are used to resist the civil defense door.

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