Flexible spot welding tool for civil air defense door

Abstract

The utility model relates to the field of civil air defense doors, in particular to a civil air defense door flexible spot welding tool which comprises a turnover mechanism and fixing mechanisms connected to the two sides of the turnover mechanism respectively, conveying mechanisms are arranged on the opposite sides of the fixing mechanisms respectively, and welding robots are arranged on the two sides, in the vertical direction of the conveying mechanisms, of the fixing mechanisms respectively. A receding pit is formed in the lower portion of the turnover mechanism, the turnover mechanism comprises a clamping limiting assembly and a driving assembly for driving the clamping limiting assembly to turn over, the clamping limiting assembly comprises limiting frames which are symmetrically and oppositely arranged, and a plurality of first electric rollers are symmetrically arranged on the opposite sides of the limiting frames at intervals. According to the civil air defense door overturning device, the driving assembly drives the limiting frame to rotate, the civil air defense door is clamped and limited under the action of the first telescopic rod assembly, the hydraulic rotary cylinder drives the limiting baffle to rotate by 90 degrees, and the limiting baffle is matched with the limiting groove for clamping, so that the civil air defense door is prevented from sliding off in the overturning process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of civil air defense door especially is concerned about a civil air defense door flexible spot welding tool. BACKGROUND

[0002] Civil air defense door is a part of civil defense, it belongs to protective equipment, mainly used in the war, earthquake and other natural disasters, protect people's life and property safety, provide necessary protection and airtight function, civil air defense door has multiple types, including ordinary single, double-leaf protective airtight door and airtight door, movable threshold single, double-leaf protective airtight door and airtight door etc., in addition, there are also suspended type blast wave movable door, electric control door etc., civil air defense door needs to carry out spot welding operation to ensure its structural firmness and stability in the production process.

[0003] The Chinese invention patent with the publication number CN116571918A discloses a civil air defense door plate welding device and its using method, which comprises a machine body, a conveying mechanism for conveying door plates is arranged on the machine body, a welding mechanism for welding door plates is arranged on the machine body, a filling mechanism for filling fiber plates is arranged above the conveying mechanism, the filling mechanism comprises a moving block, the moving block is slidably connected with the top of the machine body in the horizontal direction, a telescopic air cylinder is arranged at one end of the machine body to drive the moving block to slide in the horizontal direction, an elastic pressing block is arranged at the bottom of the moving block to press the fiber plates into the door plate grid, and a lifting air cylinder is arranged on the machine body to drive the elastic pressing block to lift.

[0004] The above prior art has the following defects: after single-sided welding of the civil air defense door plate, the conveying mechanism will convey the welded door plate to the turnover mechanism to turn over and then weld again, but in this process, the civil air defense door is not stable enough to be fixed by the fixing bolts and the fixing plates, as the civil air defense door is usually heavy, the use of this fixing method may cause the civil air defense door to slide down during the turnover process, which may easily cause safety hazards and damage to the workpiece, and also affects the efficiency, therefore, in order to ensure the stability of the civil air defense door during the turnover and welding process, the present application provides a civil air defense door flexible spot welding tool. UTILITY MODEL CONTENTS

[0005] The utility model mainly solves the technical problem to provide a civil air defense door flexible spot welding tool, ensures the stability of the civil air defense door during the turnover and welding process, and improves the production safety and welding efficiency.

[0006] To solve the above technical problems, one technical scheme of the utility model is to provide a civil air defense door flexible spot welding tool, which comprises a turnover mechanism and fixing mechanisms connected on both sides of the turnover mechanism respectively, the fixing mechanisms are provided with conveying mechanisms on the opposite sides respectively, the fixing mechanisms are provided with welding robots on both sides in the vertical direction of the conveying mechanisms respectively, a gap is arranged below the turnover mechanism, the turnover mechanism comprises a clamping limiting assembly and a driving assembly for driving the turnover of the turnover mechanism.

[0007] The clamping and limiting assembly comprises symmetrically and oppositely arranged limiting frames, a plurality of electric rollers are symmetrically and spaced apart on the opposite sides of the limiting frames, respectively, a gap is formed on one of the opposite ends of each limiting frame, respectively, a limiting slot is formed on the other opposite end of each limiting frame, respectively, a limiting baffle is rotatably connected in the gap, and a hydraulic rotary cylinder is connected to the side end of each limiting frame to drive the limiting baffle to rotate by 90 degrees.

[0008] At least two telescopic rod assemblies are arranged on the side of the clamping and limiting assembly close to the driving assembly, and the telescopic rod assemblies are adapted to adjust the distance between the limiting frames.

[0009] By adopting the above technical scheme, the conveying mechanism conveys the civil air defense door to be welded to the fixing mechanism, so that the welding machine performs welding work on the civil air defense door, and after single-sided welding, the civil air defense door is conveyed to the turnover mechanism, the limiting frame is driven to rotate by the driving assembly, the turnover pit provides sufficient turnover space for the turnover mechanism, collision with the ground or other equipment during the turnover process is avoided, the limiting baffle can be driven by the hydraulic rotary cylinder to rotate by 90 degrees, and the limiting slot is used for clamping, so that the civil air defense door is prevented from falling during the turnover process, the civil air defense door can be clamped and limited more conveniently under the action of the telescopic rod assembly, and then the civil air defense door is conveyed to the corresponding position of the welding robot again for welding, thereby improving the welding efficiency.

[0010] In a preferred example, the driving assembly comprises a support seat, a rotary support rotatably connected to one side of the support seat, a servo motor on the other side of the support seat, a rotating plate mounted on the side of the rotary support away from the support seat, a fixing groove formed on one side of the rotating plate, the fixing groove being fixedly connected with the side edge of one of the limiting frames, and the other limiting frame not being in contact with the rotating plate when moving close to the other limiting frame, a drive gear connected with the output shaft of the servo motor, and the drive gear being in meshing connection with the rotary support.

[0011] By adopting the above technical scheme, the servo motor drives the drive gear to rotate, so that the rotary support and the rotating plate are driven to turn over, the rotating plate turns over the corresponding limiting frame through the fixing groove, and the telescopic rod assembly is used for realizing the turnover work of the civil air defense door, thereby improving the welding efficiency.

[0012] In a preferred example, the telescopic rod assembly comprises a mounting plate one connected to one of the limiting frames and a mounting plate two connected to the other limiting frame, an electric push rod one connected to the mounting plate one, an extending end of the electric push rod one being connected with the mounting plate two, a guide rod arranged between the limiting frames, and one end of the guide rod penetrating through the outer surface of one of the limiting frames and the outer end surface of the guide rod being not in contact with the limiting frame.

[0013] By adopting the technical scheme, the mounting plate one and the mounting plate two are connected to the two limiting frames respectively, mounting points are provided for the electric push rod one and the guide rod, the electric push rod one adjusts the distance between the two limiting frames through telescopic movement, so as to clamp the civil air defense door, and the guide rod guides the two limiting frames to keep parallel movement tracks, so that the risk of unstable clamping or damage to the civil air defense door due to inconsistent movement tracks is avoided, and the civil air defense door is kept stable during the turning process.

[0014] The utility model discloses in a preferable example can be further configured as: the fixed mechanism includes the welding platform, the top of welding platform symmetry and interval is equipped with several accommodating mouth, the accommodating mouth is equipped with conveying assembly respectively, still include drive telescopic rod assembly no. 2 that conveying assembly goes up and down, the welding platform is close to the top side of welding robot respectively and is equipped with movable limit clamping assembly, along the adjacent two accommodating mouths between conveying direction of the conveying mechanism respectively are equipped with pad no. 1, the top central rectangle array of welding platform has several pad no. 2, the pad no. 2 of outermost side is close to accommodating mouth setting and its top with the top of pad no. 1 is in the same horizontal plane.

[0015] By adopting the technical scheme, the accommodating mouth is used for providing the space of installing the conveying assembly, and accommodating and supporting different parts of the civil air defense door, the conveying assembly is driven to move up and down by the telescopic rod assembly no. 2, and the conveying assembly is used to transfer the civil air defense door from the conveying mechanism to the welding position, and when the conveying assembly is driven to move down by the telescopic rod assembly no. 2 and is located below the top of the accommodating mouth, the civil air defense door is placed on the upper welding platform, at this time, the pad no. 1 and the pad no. 2 provide additional support surface to ensure that the civil air defense door is stably supported during the welding process, in addition, the movable limit clamping assembly fixes and limits the civil air defense door during the welding process to prevent the civil air defense door from moving or deforming during the welding process.

[0016] The utility model discloses in a preferable example can be further configured as: movable limit clamping assembly includes the moving plate, the lower interval of moving plate is equipped with several guide rails no. 1, the guide rail no. 1 is slidably connected with slider no. 1 respectively, the top of guide rail no. 1 is located below the top of pad no. 2, slider no. 1 is connected with moving plate respectively, the top side of welding platform close to welding robot is equipped with not less than two mounting seat no. 1 at intervals, hydraulic cylinder no. 1 is installed on mounting seat no. 1 respectively, one end of hydraulic cylinder no. 1 is connected with moving plate respectively, the top one end of moving plate along conveying mechanism conveying direction is connected with linear module, fixed pressing piece is installed on the slide table of linear module on the other side of the top of moving plate respectively, the side of moving plate close to accommodating mouth is connected with several fixed blocks at intervals, the bottom of fixed block is located above the top of pad no. 2 respectively.

[0017] By adopting the above technical solution, the hydraulic cylinder drives the moving plate to move, and at the same time, the guide rail and the slider ensure the smooth movement of the moving plate on the welding platform, so that the fixed block clamps the side of the air defense door. In addition, the linear module drives the fixed clamping component to move linearly, so as to cooperate with another fixed clamping component to fix and limit the air defense doors of different shapes and sizes.

[0018] In a preferred embodiment, the present invention can be further configured as follows: the conveying assembly includes a U-shaped mounting base, and an electric roller two is rotatably connected inside the U-shaped mounting base. The top of the electric roller two is at the same horizontal plane as the top of the electric roller one. The telescopic rod assembly two includes a connecting plate, and a plurality of electric push rods two are connected at intervals to the bottom of the connecting plate. When the electric push rods two drive the U-shaped mounting base to move upward, the inner side of the U-shaped mounting base does not contact the bottom of the welding platform.

[0019] By adopting the above technical solution for installing and fixing the electric roller two, and driving the connecting plate to move up and down through the electric push rod two, the electric roller two can be moved up and down to meet different needs in the welding process.

[0020] In a preferred embodiment, the present invention can be further configured such that: the fixing clamping member includes a base and a column connected to its top, a horizontal arm is connected to the side of the column away from the welding robot, a second hydraulic cylinder is mounted on the horizontal arm, and a clamping block is connected to the extended end of the second hydraulic cylinder.

[0021] By adopting the above technical solution, after the two sides of the air-raid shelter door are fixed by the fixing blocks, the hydraulic cylinder drives the clamping block to move downward, so that the clamping block contacts the air-raid shelter door and generates clamping force, fixing the air-raid shelter door in the designated position, so as to ensure its stability during the welding process and provide sufficient clamping force.

[0022] In a preferred embodiment, this utility model can be further configured as follows: An auxiliary support assembly is symmetrically installed on the side of the welding platform near the flipping mechanism. The auxiliary support assembly includes an L-shaped support arm, a rubber pad connected to the top of the L-shaped support arm, and universal balls connected to the top of the rubber pad. The universal balls roll in contact with the bottom of the lower limiting frame. It also includes a second mounting base, on which an electric push rod third for driving the L-shaped support arm to move towards the limiting frame is connected. A guide rail second is symmetrically provided above the L-shaped support arm and connected to the welding platform. A slider second is connected to the guide rail second and connected to the L-shaped support arm. A reinforcing rib is connected to the inner side of the right-angle end of the L-shaped support arm.

[0023] By adopting the above technical scheme, the electric push rod three-drive L-shaped support arm is moved, the universal ball is in rolling contact with the bottom of the lower limit frame, the turnover mechanism is assisted and supported, when the universal ball is in contact with the limit frame, the rubber pad is deformed, the turnover mechanism can still assist and support the civil air defense door after being turned over, thereby meeting the support requirements of civil air defense doors of different sizes.

[0024] In a preferred example, the conveying mechanism can further be configured as: the conveying mechanism comprises support frames arranged symmetrically, a plurality of electric roller three are installed on the inner side of the support frames at intervals, and the top of the electric roller three is at the same horizontal plane as the top of the electric roller one.

[0025] By adopting the above technical scheme, the support frame is responsible for providing stable support and fixing effect and cooperates with the electric roller three to drive the civil air defense door to move on the support frame, thereby ensuring the stability and continuity of the civil air defense door in the whole conveying process.

[0026] In summary, the utility model has at least one of the following beneficial technical effects of the civil air defense door flexible spot welding tool:

[0027] 1. The conveying mechanism conveys the civil air defense door required to be welded to the fixing mechanism, cooperates with the welding machine to weld the civil air defense door on one side, and after one-side welding, is conveyed to the turnover mechanism, is driven by the driving assembly to rotate the limit frame, and under the action of the telescopic rod assembly one, the civil air defense door can be clamped and limited more conveniently, the hydraulic rotary cylinder drives the limit baffle to rotate by 90 degrees, cooperates with the limit groove to be clamped, so as to prevent the civil air defense door from sliding in the turning process, and under the action of the telescopic rod assembly one, the civil air defense door can be clamped and limited more conveniently, and then is conveyed to the welding robot corresponding position to weld the other side, thereby improving the welding efficiency.

[0028] 2. When the turnover mechanism receives and conveys the civil air defense door, the electric push rod three drives the L-shaped support arm to move, the universal ball is in rolling contact with the bottom of the lower limit frame, the turnover mechanism and the conveyed civil air defense door can be assisted and supported, in the turning process, the electric push rod three drives the L-shaped support arm to retract, the turnover mechanism stably drives the civil air defense door to turn over, and the stability of the civil air defense door is improved after turning over. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating creative labor, wherein:

[0030] Figure 1The utility model discloses a structure schematic drawing of the utility model;

[0031] Figure 2 The utility model discloses a structure schematic drawing of the utility model turnover mechanism;

[0032] Figure 3 The utility model discloses a structure schematic drawing of the utility model Figure 2 The utility model discloses a structure schematic drawing of the utility model drive assembly;

[0033] Figure 4 The utility model discloses a structure schematic drawing of the utility model Figure 2 The utility model discloses a structure schematic drawing of the utility model telescopic rod assembly one;

[0034] Figure 5 The utility model discloses a structure schematic drawing of the utility model fixed mechanism;

[0035] Figure 6 The utility model discloses a structure schematic drawing of the utility model Figure 5 The utility model discloses a structure schematic drawing of the utility model movable limit clamping assembly;

[0036] Figure 7 The utility model discloses a structure schematic drawing of the utility model Figure 5 The utility model discloses a structure schematic drawing of the utility model conveying assembly;

[0037] Figure 8 The utility model discloses a structure schematic drawing of the utility model Figure 5 The utility model discloses a structure schematic drawing of the utility model auxiliary support assembly;

[0038] Figure 9 The utility model discloses a structure schematic drawing of the utility model conveying mechanism;

[0039] In the drawing: 10, turnover mechanism;20, fixed mechanism;30, conveying mechanism;4, welding robot;5, let place pit;

[0040] 11, clamping limit assembly;12, drive assembly;13, telescopic rod assembly one;

[0041] 21, welding platform;22, containing mouth;23, conveying assembly;24, movable limit clamping assembly;25, cushion block one;26, cushion block two;27, telescopic rod assembly two;28, auxiliary support assembly;

[0042] 31, support frame;32, motorized roller three;

[0043] 111, limit frame;112, motorized roller one;113, gap;114, limit slot;115, limit baffle;116, hydraulic rotary cylinder;

[0044] 121, support seat;122, rotary support;123, servo motor;124, rotation plate;125, fixed slot;126, drive gear;

[0045] 131, mounting plate one;132, mounting plate two;133, motorized pushrod one;134, guide rod;

[0046] 231, U-shaped mounting seat; 232, electric roller two;

[0047] 241, moving plate; 242, guide rail one; 243, sliding block one; 244, mounting seat one; 245, hydraulic cylinder one; 246, linear module; 247, fixed pressing part; 248, fixed block;

[0048] 271, connecting plate; 272, electric push rod two;

[0049] 281, L-shaped support arm; 282, rubber pad; 283, universal ball; 284, mounting seat two; 285, electric push rod three; 286, guide rail two; 287, sliding block two; 288, reinforcing rib;

[0050] 2471, base; 2472, column; 2473, cross arm; 2474, hydraulic cylinder two; 2475, pressing block. DETAILED DESCRIPTION

[0051] The preferred embodiments of the present application will be described below with reference to the drawings. It should be understood that the preferred embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0052] It should be noted that these drawings are simplified schematic diagrams, and only illustrate the basic structure of the present application in a schematic manner, and thus only show the relevant components of the present application.

[0053] Reference Figures 1-9The utility model discloses a kind of civil air defense door flexible spot welding tool, comprising: turnover mechanism 10 and the fixed mechanism 20 connected at its two sides respectively, the opposite side of fixed mechanism 20 is separately equipped with conveying mechanism 30, fixed mechanism 20 is vertically along conveying mechanism 30 Two sides are respectively equipped with welding robot 4, the lower of turnover mechanism 10 is equipped with let go pit 5, turnover mechanism 10 includes clamping limiting component 11 and the drive component 12 of driving its turnover, clamping limiting component 11 includes symmetrically and oppositely arranged limiting frame 111, the opposite side of limiting frame 111 respectively symmetrically and interval is equipped with several electric roller one 112, one of the opposite end of limiting frame 111 is respectively equipped with gap 113, the other opposite end is respectively equipped with limiting slot 114, gap 113 is respectively rotationally connected with limiting baffle 115, further including hydraulic rotary cylinder 116 that is respectively connected in limiting frame 111 one side end and drives limiting baffle 115 to rotate ninety degrees, conveying mechanism 30 includes symmetrically arranged support frame 31, the inside of support frame 31 is interval installed with several electric roller three 32, the top of electric roller three 32 and the top of electric roller one 112 are in same horizontal plane, the side of clamping limiting component 11 close to drive component 12 is respectively equipped with not less than two telescopic rod component one 13, telescopic rod component one 13 is suitable for adjusting the distance between limiting frame 111;Limiting baffle 115 after rotating ninety degrees, the projection of its end section falls into the projection of limiting slot 114, so that limiting baffle 115 is quickly inserted into limiting slot 114 under the action of telescopic rod component one 13, when civil air defense door one side welding is finished and is transported between limiting frame 111, hydraulic rotary cylinder 116 drives limiting baffle 115 to rotate ninety degrees, telescopic rod component one 13 reduces the distance between limiting frame 111 and clamps civil air defense door, the end of limiting baffle 115 is quickly inserted into limiting slot 114 at this time, and under the action of drive component 12, make civil air defense door gradually overturn, and let go pit 5 provides enough overturning space for its overturning, civil air defense door slides along with the angle of overturning at this time, and gradually contact with the surface of limiting baffle 115, since being limited by limiting slot 114, can effectively prevent civil air defense door from separating from clamping limiting component 11, to prevent the phenomenon of sliding, so as to improve production safety and welding efficiency.

[0054] The driving assembly 12 comprises a support base 121, a rotary support 122 rotatably connected to one side of the support base 121, a servo motor 123 connected to the other side of the support base 121, a rotating plate 124 mounted on the side, away from the support base 121, of the rotary support 122, a fixing groove 125 formed in one side of the rotating plate 124, the fixing groove 125 being fixedly connected with the side edge of one of the limiting frames 111 and not being in contact with the rotating plate 124 when the other limiting frame 111 approaches, an output shaft of the servo motor 123 being connected with a driving gear 126, and the driving gear 126 being meshedly connected with the rotary support 122. The telescopic rod assembly 13 comprises a mounting plate one 131 connected to one of the limiting frames 111 and a mounting plate two 132 connected to the other limiting frame 111, an electric push rod one 133 connected to the mounting plate one 131, an extending end of the electric push rod one 133 being connected with the mounting plate two 132, and a guide rod 134 arranged between the limiting frames 111, one end of the guide rod 134 penetrating through the outer surface of one of the limiting frames 111 and the outer end surface of the guide rod 134 not being in contact with the limiting frame 111. When welding of one side of the civil defense door is finished and the civil defense door is conveyed between the limiting frames 111, the electric push rod one 133 is retracted or extended to drive the mounting plate two 132 and the limiting frame 111 connected thereto to move to the other limiting frame 111, so as to adjust the distance between the two limiting frames 111, which can adapt to civil defense doors of different thicknesses and also can ensure stability and accuracy during the retraction process in cooperation with the guide rod 134, so as to limit the civil defense door, and the servo motor 123 drives the driving gear 126 to rotate, so as to drive the rotary support 122 and the rotating plate 124 thereon to rotate, so that the rotating plate 124 and the limiting frame 111 are turned over, and the retraction adjustment of the electric push rod one 133 ensures that the lower limiting frame 111 is always horizontal with the top of the fixing mechanism 20, so as to convey the civil defense door for welding.

[0055] The fixing mechanism 20 comprises a welding platform 21, the top of the welding platform 21 is symmetrically and spacedly provided with a plurality of accommodating openings 22, the conveying assembly 23 is respectively arranged in the accommodating openings 22, the telescopic rod assembly two 27 is arranged to drive the conveying assembly 23 to move up and down, the welding platform 21 is provided with the movable limiting and clamping assembly 24 on the side of the top close to the welding robot 4, the cushion block one 25 is arranged between the adjacent two accommodating openings 22 along the conveying direction of the conveying mechanism 30, the welding platform 21 is provided with a plurality of cushion blocks two 26 in a rectangular array in the center of the top, the outermost cushion block two 26 is arranged close to the accommodating opening 22 and the top of the cushion block two 26 is at the same horizontal plane with the top of the cushion block one 25, the movable limiting and clamping assembly 24 comprises a moving plate 241, a plurality of guide rails one 242 are arranged below the moving plate 241, a sliding block one 243 is slidably connected to the guide rail one 242, the top of the guide rail one 242 is located below the top of the cushion block two 26, the sliding block one 243 is connected to the moving plate 241, the welding platform 21 is provided with not less than two mounting seats one 244 which are spacedly arranged on the side of the top close to the welding robot 4, the hydraulic cylinder one 245 is arranged on the mounting seat one 244, one end of the hydraulic cylinder one 245 is connected to the moving plate 241, the linear module 246 is connected to the top end of the moving plate 241 along the conveying direction of the conveying mechanism 30, the fixed pressing piece 247 is arranged on the sliding table of the linear module 246 on the other side of the top of the moving plate 241, a plurality of fixing blocks 248 are connected to the side of the moving plate 241 close to the accommodating opening 22, the bottom of the fixing block 248 is located above the top of the cushion block two 26, the fixed pressing piece 247 comprises a base 2471 and a stand 2472 connected to the top of the base 2471, the stand 2472 is connected to the horizontal arm 2473 on the side away from the welding robot 4, the hydraulic cylinder two 2474 is arranged on the horizontal arm 2473, the pressing block 2475 is connected to the extension end of the hydraulic cylinder two 2474; the bottom of the moving plate 241 is located above the cushion block two 26, when the civil defense door is conveyed to the welding platform 21, the conveying assembly 23 is driven to move up by the telescopic rod assembly two 27, the civil defense door is driven to move to the corresponding position, and after contraction, the civil defense door is supported by the cushion block one 25 and the cushion block two 26, the hydraulic cylinder one 245 drives the moving plate 241 to move to clamp the two sides of the civil defense door, and the hydraulic cylinder two 2474 drives the pressing block 2475 to press the top of the civil defense door to prevent the civil defense door from moving during welding, improve the welding stability, in addition, the linear module 246 can adjust the movement of the corresponding fixed pressing piece 247, so as to accurately press the civil defense door of different sizes.

[0056] The conveying assembly 23 comprises a U-shaped mounting base 231, a motorized roller two 232 is rotatably connected in the U-shaped mounting base 231, the top of the motorized roller two 232 is at the same horizontal plane with the top of the motorized roller one 112, the telescopic rod assembly two 27 comprises a connecting plate 271, a plurality of motorized push rods two 272 are spaced connected to the bottom of the connecting plate 271, when the motorized push rods two 272 drive the U-shaped mounting base 231 to move upwards, the inner side of the U-shaped mounting base 231 is not in contact with the bottom of the welding platform 21; after the motorized push rods two 272 drive the U-shaped mounting base 231 to move upwards, the top of the motorized roller two 232 is higher than the top of the cushion block two 26, so that the motorized roller two 232 stably drives the civil defense door to be conveyed.

[0057] The welding platform 21 symmetrically installs the auxiliary support assembly 28 near one side of the turnover mechanism 10, the auxiliary support assembly 28 comprises an L-shaped support arm 281, a rubber pad 282 is connected to the top of the L-shaped support arm 281, universal balls 283 are respectively connected to the top of the rubber pad 282, the universal balls 283 are in rolling contact with the bottom of the lower limit frame 111, further comprising a mounting base two 284, a motorized push rod three 285 is connected on the mounting base two 284 and drives the L-shaped support arm 281 to move to the limit frame 111, L-shaped support arms 281 are symmetrically provided above the guide rails two 286 connected with the welding platform 21, slide blocks two 287 are respectively connected on the guide rails two 286, the slide blocks two 287 are respectively connected with the L-shaped support arms 281, the inner side of the right-angled end of the L-shaped support arm 281 is connected with a reinforcing rib 288; when the turnover mechanism 10 receives and conveys the civil defense door, the motorized push rod three 285 drives the L-shaped support arm 281 to move, so that the universal balls 283 are in rolling contact with the bottom of the lower limit frame 111, that is, the turnover mechanism 10 and the conveyed civil defense door can be assisted and supported, and during the turnover process, the motorized push rod three 285 drives the L-shaped support arm 281 to contract, so that the turnover mechanism 10 stably turns over the civil defense door.

[0058] The implementation principle of the embodiment is as follows: in use, the electric roller three 232 conveys the civil defense door to be welded to the welding platform 21, the electric roller two 232 receives the civil defense door and conveys it to the appropriate position of the welding platform 21, at this time, the hydraulic cylinder one 245 drives the corresponding moving plate 241 to move, so that the moving plate 241 clamps the two sides of the civil defense door through the fixed block 248, then the hydraulic cylinder two 2474 drives the pressing block 2475 to press the top of the civil defense door to prevent it from moving during welding, then the welding robot 4 welds according to the pre-set welding program and process parameters, and after single-sided welding is completed, the hydraulic cylinder one 245 and the hydraulic cylinder two 2474 are reset, the electric push rod two 272 drives the U-shaped mounting seat 231 to move upward, the civil defense door welded on one side is conveyed through the electric roller two 232, the electric roller one 112 receives the civil defense door and drives it to move to the middle region of the limiting frame 111, then the hydraulic rotary cylinder 116 drives the limiting baffle 115 to rotate by ninety degrees, the electric push rod three 285 drives the L-shaped supporting arm 281 to retract and reset, the telescopic rod assembly one 13 reduces the distance between the limiting frames 111 and clamps the civil defense door, at this time, the end of the limiting baffle 115 is quickly inserted into the limiting groove 114, the servo motor 123 is engaged with the rotary support 122 through the driving gear 126, drives the civil defense door between the rotating plate 124 and the limiting frame 111 to rotate at low speed, and the relief pit 5 provides enough turning space for the civil defense door, at this time, the civil defense door slides with the turning angle and gradually contacts the surface of the limiting baffle 115, and since the limiting groove 114 limits, the civil defense door can be effectively prevented from being separated from the clamping and limiting assembly 11, so that the sliding phenomenon is prevented, and after turning 180 degrees, the electric push rod three 285 drives the L-shaped supporting arm 281 to move, the two limiting frames 111 move in opposite directions driven by the electric push rod one 133, the end of the limiting baffle 115 is separated from the limiting groove 114, the hydraulic rotary cylinder 116 is reset, and when the lower limiting frame 111 is parallel to the top of the welding platform 21, the universal ball 283 is in rolling contact with the bottom of the lower limiting frame 111 to assist in supporting the turning mechanism 10 and the conveyed civil defense door, and the civil defense door turned over is conveyed to the next welding platform 21 in cooperation with the electric roller one 112, and the above welding action is repeated to improve the welding efficiency.

[0059] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation according to the content of the utility model specification, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A flexible spot welding fixture for air-raid shelter doors, characterized in that, include: A flipping mechanism (10) and a fixing mechanism (20) connected to its two sides respectively. A conveying mechanism (30) is provided on the opposite side of the fixing mechanism (20). Welding robots (4) are provided on both sides of the fixing mechanism (20) along the vertical direction of the conveying mechanism (30). A clearance pit (5) is provided below the flipping mechanism (10). The flipping mechanism (10) includes a clamping and limiting component (11) and a driving component (12) for driving its flipping. The clamping and limiting assembly (11) includes a symmetrical and oppositely arranged limiting frame (111). Several electric rollers (112) are symmetrically and spaced apart on opposite sides of the limiting frame (111). One opposite end of the limiting frame (111) is provided with a notch (113), and the other opposite end is provided with a limiting groove (114). A limiting baffle (115) is rotatably connected in the notch (113). It also includes a hydraulic rotary cylinder (116) connected to one end of the limiting frame (111) to drive the limiting baffle (115) to rotate 90 degrees. The clamping and limiting component (11) is provided with at least two telescopic rod assemblies (13) on the side near the driving component (12), and the telescopic rod assemblies (13) are adapted to adjust the distance between the limiting frames (111).

2. The flexible spot welding fixture for a civil defense door according to claim 1, characterized in that, The drive assembly (12) includes a support base (121) and a slewing bearing (122) rotatably connected to one side thereon, and a servo motor (123) on the other side. A rotating plate (124) is installed on the side of the slewing bearing (122) away from the support base (121). A fixing groove (125) is provided on one side of the rotating plate (124). The fixing groove (125) is fixedly connected to the side of one of the limiting frames (111), and does not contact the rotating plate (124) when it moves close to the other limiting frame (111). The output shaft of the servo motor (123) is connected to a drive gear (126), and the drive gear (126) meshes with the slewing bearing (122).

3. The flexible spot welding fixture for a civil defense door according to claim 2, characterized in that, The telescopic rod assembly (13) includes a mounting plate (131) connected to one of the limiting frames (111) and a mounting plate (132) connected to the other limiting frame (111). An electric push rod (133) is connected to the mounting plate (131). The extended end of the electric push rod (133) is connected to the mounting plate (132). A guide rod (134) is provided between the limiting frames (111). One end of the guide rod (134) passes through the outer surface of one of the limiting frames (111), and its outer end face does not contact the limiting frame (111).

4. The flexible spot welding fixture for a civil defense door according to claim 1, characterized in that, The fixing mechanism (20) includes a welding platform (21). The top of the welding platform (21) is symmetrically and spaced apart with several receiving ports (22). Each receiving port (22) is provided with a conveying component (23). The welding platform (21) also includes a telescopic rod component (27) for driving the conveying component (23) to move up and down. The welding platform (21) is provided with a movable limiting clamping component (24) on the top side near the welding robot (4). A pad block (25) is provided between two adjacent receiving ports (22) along the conveying direction of the conveying mechanism (30). The top of the welding platform (21) has a rectangular array of several pad blocks (26). The outermost pad block (26) is located near the receiving port (22) and its top is on the same horizontal plane as the top of the pad block (25).

5. The flexible spot welding fixture for a civil defense door according to claim 4, characterized in that, The movable limiting clamping assembly (24) includes a movable plate (241). Several guide rails (242) are spaced apart below the movable plate (241). Slider blocks (243) are slidably connected to each guide rail (242). The top of each guide rail (242) is located below the top of the pad block (26). The sliders (243) are connected to the movable plate (241). At least two mounting seats (244) are spaced apart on the side of the welding platform (21) near the top of the welding robot (4). Each mounting seat (244) is equipped with a... There is a hydraulic cylinder (245), one end of which is connected to a moving plate (241). The top end of the moving plate (241) along the conveying direction of the conveying mechanism (30) is connected to a linear module (246). The other side of the top of the moving plate (241) and the slide of the linear module (246) are respectively equipped with a fixing clamping component (247). Several fixing blocks (248) are connected at intervals on the side of the moving plate (241) near the receiving port (22). The bottom of the fixing blocks (248) is located above the top of the pad block (26).

6. The flexible spot welding fixture for a civil defense door according to claim 4, characterized in that, The conveying assembly (23) includes a U-shaped mounting base (231), and an electric roller two (232) is rotatably connected inside the U-shaped mounting base (231). The top of the electric roller two (232) is at the same level as the top of the electric roller one (112). The telescopic rod assembly two (27) includes a connecting plate (271), and a number of electric push rods two (272) are connected at intervals at the bottom of the connecting plate (271). When the electric push rods two (272) drive the U-shaped mounting base (231) to move upward, the inner side of the U-shaped mounting base (231) does not contact the bottom of the welding platform (21).

7. The flexible spot welding fixture for a civil defense door according to claim 5, characterized in that, The fixing clamping component (247) includes a base (2471) and a column (2472) connected to its top. A horizontal arm (2473) is connected to the side of the column (2472) away from the welding robot (4). A hydraulic cylinder (2474) is mounted on the horizontal arm (2473). A clamping block (2475) is connected to the extended end of the hydraulic cylinder (2474).

8. The flexible spot welding fixture for a civil defense door according to claim 4, characterized in that, The welding platform (21) is symmetrically equipped with auxiliary support components (28) on one side near the flipping mechanism (10). The auxiliary support components (28) include L-shaped support arms (281), the top of which is connected to a rubber pad (282). The top of the rubber pad (282) is connected to a universal ball (283), which rolls in contact with the bottom of the lower limiting frame (111). The platform also includes a second mounting base (284). An electric push rod (285) is connected to the second seat (284) to drive the L-shaped support arm (281) to move toward the limiting frame (111). The L-shaped support arm (281) is symmetrically provided with a guide rail (286) connected to the welding platform (21). The guide rail (286) is connected to a slider (287) respectively. The slider (287) is connected to the L-shaped support arm (281) respectively. The right-angle end of the L-shaped support arm (281) is connected to a reinforcing rib (288).

9. The flexible spot welding fixture for a civil defense door according to claim 4, characterized in that, The conveying mechanism (30) includes a symmetrically arranged support frame (31), and a plurality of electric rollers (32) are installed at intervals on the inner side of the support frame (31). The top of the electric rollers (32) is on the same horizontal plane as the top of the electric roller (112).

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