A splicing spot welding tool and welding device of a triangular plate bridge shell body

Abstract

The application belongs to the welding equipment of the axle housing body, and particularly relates to a splicing spot welding tool and a welding device for the axle housing body with triangular plates, the axle housing body is welded by two splicing housings and four triangular plates, the splicing housings include a main body section and two installation arms extending outwardly at two ends of the main body section, the splicing spot welding tool includes a first base, a turnover frame rotatably arranged on the first base, a first clamping mechanism arranged on the turnover frame and used for clamping the main body sections of the two splicing housings, two second clamping mechanisms arranged on the turnover frame and used for clamping the two installation arms of the two splicing housings respectively, and a turnover mechanism arranged on the first base and connected with the turnover frame and used for driving the turnover of the turnover frame; the structure of the splicing spot welding tool is limited, the turnover mechanism is arranged to cooperate with the turnover frame, the spot welding between the two splicing housings and the four triangular plates is realized, the turnover process is automatic, manual turnover is not needed, and the high temperature of the welding part in the manual turnover process is prevented from causing harm to the worker.

Description

TECHNICAL FIELD

[0001] The application belongs to the welding equipment of the axle housing body, and particularly relates to a splicing spot welding tool and welding device for the axle housing body with triangular plates. BACKGROUND

[0002] In the field of automobile axle housing machining technology, in the production process of various stamping and welding axle housing assemblies at home or abroad, the axle housing body needs to be spliced and then welded. In the splicing process, two half shells (i.e., an upper shell and a lower shell) of the axle housing body need to be spliced into one, and then a triangular plate is welded on the upper shell and the lower shell. The existing fixture generally adopts manual positioning and splicing, which has the problems of high labor intensity, low manufacturing precision and low production efficiency. In addition, after the spot welding of the triangular plate on one side of the axle housing body is completed, the axle housing assembly needs to be turned over in order to complete the spot welding of the triangular plate on the other side of the axle housing body. The turning over work also needs manual operation. The high temperature at the welding position can easily cause danger when the workpiece is turned over manually, and improvement is needed. SUMMARY

[0003] The purpose of the application is to overcome the shortcomings of the prior art and provide a splicing spot welding tool and welding device for an axle housing body with triangular plates.

[0004] The application adopts the following technical scheme:

[0005] A splicing spot welding tool for an axle housing body with triangular plates, the axle housing body being welded by two splicing shells arranged oppositely and four triangular plates, the splicing shell comprising a main body section and two installation arms extending outwardly at both ends of the main body section, the tool comprising a first base, a turnover frame rotatably arranged on the first base, a first clamping mechanism arranged on the turnover frame for clamping the main body sections of the two splicing shells, two second clamping mechanisms arranged on the turnover frame in a spaced manner for clamping the two installation arms of the two splicing shells, and a turnover mechanism arranged on the first base and connected to and driving the turnover frame to turn over, when the axle housing body is spot welded, the two splicing shells are spliced on the turnover frame through the first clamping mechanism and the two second clamping mechanisms, and then the triangular plates are placed on one side of the two main body sections for spot welding, when the two triangular plates and the two splicing shells on one side of the axle housing body are spot welded, the turnover mechanism drives the turnover frame to turn over, and then the two triangular plates and the two splicing shells on the other side of the axle housing body are spot welded.

[0006] Further, the first clamping mechanism comprises two first clamping frames oppositely arranged on the turnover frame, first clamping assemblies arranged on the two first clamping frames respectively for clamping the opposite body segments of the shell, and two first pressing assemblies arranged on the two first clamping frames respectively for pressing the middle part of the opposite body segments.

[0007] Further, the first pressing assembly comprises a first pressing head movably arranged on the first clamping frame, a pressing block arranged at the front end of the first pressing head, and a first driving assembly arranged on the first clamping frame and connected to and driving the first pressing head to move, the pressing block and the two first clamping wheels are in a triangular distribution to clamp and fix the body segments of the shell.

[0008] Further, the first clamping assembly further comprises two first guide members arranged on the first clamping frame for guiding the movement of the two first moving blocks, the first guide member comprises a plurality of first guide rods arranged on the first clamping frame in a spaced manner along the moving direction of the first moving block, and a first guide hole arranged on the first moving block and through which the plurality of first guide rods pass, and the first clamping wheel is rotatably arranged at the front end of the first moving block.

[0009] Further, the second clamping mechanism comprises two second clamping frames oppositely arranged on the turnover frame, and two second clamping assemblies oppositely arranged on the second clamping frames for clamping the mounting arm, the second clamping assembly comprises a second moving block movably arranged on the second clamping frame, a clamping block arranged at the front end of the second moving block, and a second moving member arranged on the second clamping frame and connected to and driving the second moving block to move.

[0010] Further, the two second clamping frames are movably arranged on the turnover frame, the second clamping mechanism further comprises two first moving plates arranged on one side of the two second clamping frames respectively, and a first locking assembly arranged between the two first moving plates and the turnover frame, the first locking assembly comprises a first locking plate arranged on the turnover frame and supported below the first moving plate, a first locking screw arranged on the locking plate, and a first moving hole arranged on the first moving plate and extending along the moving direction of the first moving plate, the first locking screw is threadedly connected with the first locking plate through the first moving hole.

[0011] The welding device of the bridge shell body with the triangular plate comprises the splicing point welding tool, a second base arranged on one side of the first base, a welding table arranged on the second base, a first fixing mechanism arranged on the welding table for fixing two splicing shell body segments, two second fixing mechanisms arranged on the welding table for fixing two installation arms of the two splicing shell bodies respectively, a transfer mechanism for transferring the bridge shell body from the turnover frame to the welding table, and a welding equipment for full welding of the bridge shell body on the welding table.

[0012] Further, the transfer mechanism comprises a rack, a transfer frame movably arranged on the rack, a grabbing assembly arranged on the transfer frame for grabbing the bridge shell body, a transverse driving assembly arranged on the rack for driving the transfer frame to move transversely, and a lifting driving assembly arranged on the rack for driving the transfer frame to move up and down, the grabbing assembly comprises two grabbing arms movably arranged on the transfer frame towards or away from each other, two grabbing claws arranged on the grabbing arms for clamping one end of the bridge shell body, and two transverse moving pieces arranged on the transfer frame for driving the two grabbing arms to move respectively, the opposite side of the grabbing claw to the bridge shell body is formed with a grabbing groove extending inward, and the grabbing groove is provided for the installation arm of the splicing shell body to be embedded.

[0013] Further, a transition frame is arranged on one side of the welding table, the grabbing assembly is provided in two groups, the two grabbing assemblies are arranged on the two sides of the transfer frame oppositely, when one grabbing assembly moves the bridge shell body on the turnover frame to the welding table, the other grabbing assembly moves the bridge shell body on the welding table to the transition frame.

[0014] Further, the first fixing mechanism comprises two first fixing frames arranged oppositely up and down on the welding table, a first fixing assembly arranged on the two first fixing frames respectively for fixing the opposite splicing shell body segments, and a second pressing assembly arranged on the two first fixing frames respectively for pressing the middle part of the opposite shell body segments, the first fixing assembly comprises two first fixing blocks movably arranged on the first fixing frame oppositely left and right, two first fixing wheels arranged on the front ends of the two first fixing blocks for clamping the opposite shell body segments, and two first pushing pieces arranged on the first fixing frame for connecting and driving the opposite first fixing blocks to move respectively, and the second pressing assembly is arranged between the two first fixing wheels.

[0015] From the above description of the present application, compared with the prior art, the beneficial effects of the present application are: by limiting the structure of the splicing point welding tool, the point welding between the two splicing shells and the four triangular plates is realized by setting the turnover mechanism cooperating with the turnover frame, the turnover process is automated, manual turnover is not needed, and the high temperature of the welding part in the manual turnover process is prevented from causing harm to the workers, wherein the first clamping mechanism and the second clamping mechanism are arranged on the turnover frame, the two splicing shells after splicing are clamped and fixed to ensure the point welding position of the triangular plates, improve the welding quality of the axle shell body, and effectively improve the yield of the axle shell body. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Structure diagram of the welding device Figure One ;

[0017] Figure 2 Structure diagram of the welding device Figure Two ;

[0018] Figure 3 Structure diagram of the splicing point welding tool

[0019] Figure 4 Partial structure enlarged view of the splicing point welding tool

[0020] Figure 5 Structure diagram of the first clamping mechanism

[0021] Figure 6 Structure diagram of the second clamping mechanism

[0022] Figure 7 Partial structure diagram of the welding device

[0023] Figure 8 Partial structure diagram of the transfer mechanism

[0024] Figure 9 Structure diagram of the axle shell body

[0025] In the figure, 1-bridge shell body, 2-splicing point welding tool, 3-second base, 4-welding table, 5-first fixing mechanism, 6-second fixing mechanism, 7-transfer mechanism, 8-welding equipment, 9-transition frame, 11-splicing shell, 12-triangle plate, 13-main body section, 14-mounting arm, 21-first base, 22-overturning frame, 23-first clamping mechanism, 231-first clamping frame, 232-first clamping assembly, 2321-first moving block, 2322-first clamping wheel, 2323-first moving piece, 2324-first guide piece, 2325-first guide rod, 2326-first guide hole, 233-first pressing assembly, 2331-first pressing head, 2332-pressing block, 2333-first driving assembly, 234-protective cover, 235-connection plate, 24-second clamping mechanism, 241-second clamping frame, 242-second clamping assembly, 2421-second moving block, 2422-clamping block, 2423-second moving piece, 2424-mounting groove, 2425-supporting wheel, 243-supporting block, 244-second driving piece, 245-first moving plate, 246-first locking assembly, 2461-first locking plate, 2462-first locking bolt, 2463-first moving hole, 25-overturning mechanism, 251-overturning seat, 252-overturning assembly, 26-point welding area, 41-rotating seat, 42-welding frame, 43-rotating assembly, 51-first fixing frame, 52-first fixing assembly, 521-first fixing block, 522-first fixing wheel, 523-first pushing piece, 53-second pressing assembly, 54-full welding area, 71-transfer frame, 72-grasping assembly, 721-grasping arm, 722-grasping claw, 723-transverse moving piece, 73-transverse driving assembly, 74-lifting driving assembly, 75-rack. DETAILED DESCRIPTION

[0026] The application will be further described in the following detailed description with specific embodiments.

[0027] Referring to Figure 9 As shown in the figure, the bridge shell body 1 is welded by two splicing shells 11 and four triangle plates 12 arranged oppositely, wherein the splicing shell 11 includes a main body section 13 and two mounting arms 14 extending outwardly arranged at both ends of the main body section 13, and the four triangle plates 12 are welded on the front and back surfaces of the bridge shell body 1 respectively, specifically, the triangle plates 12 are welded at one end of the oppositely arranged two main body sections 13.

[0028] Referring to Figures 1 to 8As shown, a welding device with a triangular plate bridge shell body includes a splicing spot welding tool 2, a second base 3 arranged on one side of the splicing spot welding tool 2, a welding table 4 arranged on the second base 3, a first fixing mechanism 5 arranged on the welding table 4 for fixing two splicing shell body segments 13, two second fixing mechanisms 6 arranged on the welding table 4 for fixing two splicing shell body mounting arms 14, respectively, a transfer mechanism 7 for transferring the bridge shell body 1 from the splicing spot welding tool 2 to the welding table 4, a welding device 8 for full welding of the bridge shell body 1 on the welding table 4, and a transition frame 9 arranged on one side of the welding table 4, wherein the welding device 8 is a commonly used device in the field of bridge shell body 1 welding, and the specific structure thereof will not be further described.

[0029] The splicing spot welding tool 2 includes a first base 21, a turnover frame 22 rotatably arranged on the first base 21, a first clamping mechanism 23 arranged on the turnover frame 22 for clamping two splicing shell body segments 13, two second clamping mechanisms 24 arranged on the turnover frame 22 for clamping two splicing shell body mounting arms 14, respectively, and a turnover mechanism 25 arranged on the first base 21 and connected to and driving the turnover of the turnover frame 22. When the bridge shell body 1 is spot welded, two splicing shell bodies 11 are spliced on the turnover frame 22 by the first clamping mechanism 23 and the two second clamping mechanisms 24, and then the triangular plate 12 is placed on one side of the two upper and lower body segments 13 for spot welding. When the two triangular plates 12 and the two splicing shell bodies 11 on one side of the bridge shell body 1 are completed, the turnover mechanism 25 drives the turnover of the turnover frame 22, and then the other side of the bridge shell body 1 is spot welded with the two triangular plates 12 and the two splicing shell bodies 11, thereby completing the spot welding of the bridge shell body 1. Wherein the two second clamping mechanisms 24 are movably arranged on the turnover frame 22 to adapt to the welding of bridge shell bodies 1 of different sizes.

[0030] The first clamping mechanism 23 comprises two first clamping frames 231 arranged oppositely on the turnover frame 22, two first clamping assemblies 232 arranged on the two first clamping frames 231 respectively for clamping the opposite body segments 13 of the spliced shell, two first pressing assemblies 233 arranged on the two first clamping frames 231 respectively for pressing the middle part of the opposite body segments 13, two protective covers 234 arranged on the two first clamping frames 231 respectively for protecting the first clamping assemblies 232 and the first pressing assemblies 233 on the same side, and a connecting plate 235 connected between the two first clamping frames 231, wherein the connecting plate 235 can support the two spliced shells 11 during splicing. When the two spliced shells 11 are spliced, the two first clamping assemblies 232 are used to preliminarily splice and position the body segments 13 of the two spliced shells 11 arranged oppositely, and then the first pressing assemblies 233 press the middle part of the body segments 13, so that the spliced shell 11 is uniformly stressed, the splicing part of the triangular plate 12 is close to the joint, the subsequent installation, spot welding and full welding of the triangular plate 12 are ensured, and the yield of the axle housing body 1 is improved. Specifically, the two first clamping frames 231 form a spot welding area 26, which facilitates the spot welding between the triangular plate 12 and the two body segments 13 arranged oppositely.

[0031] The first clamping assembly 232 comprises two first movable blocks 2321 arranged oppositely on the first clamping frame 231, two first clamping wheels 2322 arranged at the front ends of the two first movable blocks 2321 for clamping the opposite body segments 13, two first moving pieces 2323 arranged on the first clamping frame 231 and connected to the first movable blocks 2321 for driving the first movable blocks 2321 to move, and two first guide pieces 2324 arranged on the first clamping frame 231 for guiding the movement of the two first movable blocks 2321, wherein the two first pressing assemblies 233 are arranged between the two first clamping wheels 2322, and the first clamping wheels 2322 are rotatably arranged at the front ends of the first movable blocks 2321. Specifically, the first guide piece 2324 comprises a plurality of first guide rods 2325 arranged at intervals on the first clamping frame 231 along the movement direction of the first movable block 2321, and a first guide hole 2326 arranged on the first movable block 2321 and through which the plurality of first guide rods 2325 pass. Through the cooperation of the plurality of first guide rods 2325 and the first guide hole 2326, the movement direction of the first movable block 2321 is ensured, and deviation is avoided. Further, the first moving piece 2323 can be a cylinder, an oil cylinder or a motor cooperating with a screw nut pair to realize the movement of the first movable block 2321. The above-mentioned driving movement is a common driving movement in the mechanical field, and the specific selection and structure thereof will not be described further.

[0032] The first pressurizing component 233 includes a first pressurizing head 2331 which can be moved up and down and is arranged on the first clamping frame 231, a pressurizing block 2332 arranged at the front end of the first pressurizing head 2331, and a first driving component 2333 which is arranged on the first clamping frame 231 and is connected to and drives the first pressurizing head 2331 to move, wherein the pressurizing block 2332 and the two first clamping wheels 2322 on the same side are distributed in a triangle to clamp and fix the main section 13 of the spliced ​​shell 11; specifically, the first driving component 2333 can use a cylinder, an oil cylinder or a motor in combination with a screw-nut pair to realize the movement of the first pressurizing head 2331. The above method is a common driving and moving method in the mechanical field, and its specific selection and structure will not be further elaborated here.

[0033] The second clamping mechanism 24 includes two second clamping frames 241 arranged on the flip frame 22 relatively to each other in the upper and lower directions, two second clamping assemblies 242 arranged on the second clamping frames 241 relatively to each other in the left and right directions for clamping the relative mounting arms 14, a support block 243 movably arranged on the two second clamping frames 241, a second driving member 244 arranged on a second clamping frame 241 to connect and drive the support block 243 to move, two first moving plates 245 respectively arranged on one side of the two second clamping frames 241, and two first locking assemblies 246 respectively arranged between the two first moving plates 245 and the flip frame 22, wherein a spot welding area 26 is formed between the two second clamping frames 241 to facilitate spot welding between the two relative mounting arms 14 in the upper and lower directions. When the two spliced ​​shells 11 are spliced, the support block 243 moves between the two second clamping frames 241 to support the mounting arms 14 of the spliced ​​shells 11; when the two spliced ​​shells 11 are clamped by the first clamping assembly 2 32. After the first pressurizing assembly 233 and the second clamping assembly 242 are clamped and fixed, the support block 243 can move in the opposite direction under the action of the second driving member 244 to prevent affecting the spot welding between the upper and lower relative mounting arms 14; specifically, the first locking assembly 246 includes a first locking plate 2461 provided on the flip frame 22 and supported below the first movable plate 245, a first locking bolt 2462 provided on the first locking plate 2461, and a first movable hole 2463 provided on the first movable plate 245 and extending along its moving direction. The first locking bolt 2462 passes through the first movable hole 2463 and is threadedly connected to the first locking plate 2461. During splicing, the first locking bolt 2462 can be loosened. According to the model size of the bridge housing body 1, the first movable plate 245 is moved to adjust the position of the second clamping mechanism 24 to adapt to the corresponding model of the bridge housing body 1. After the adjustment is completed, the first locking bolt 2462 can be tightened.

[0034] The second clamping assembly 242 comprises a second moving block 2421 movably arranged on the second clamping frame 241, a clamping block 2422 arranged at the front end of the second moving block 2421, and a second moving piece 2423 arranged on the second clamping frame 241 and connected to drive the second moving block 2421 to move, wherein the clamping block 2422 is formed with a mounting groove 2424 extending upward from the bottom surface thereof for clamping the mounting arm 14. Specifically, in actual operation, the number of clamping blocks 2422 can be increased according to the model of the axle housing body 1, and the number of second moving blocks 2421 and second moving pieces 2423 can be correspondingly increased to adapt to mounting arms 14 of different lengths. The second moving piece 2423 can adopt a gas cylinder, an oil cylinder, or a motor cooperating with a screw nut pair to realize the movement of the second moving block 2421. The above-mentioned driving movement is a common driving movement in the mechanical field, and the specific selection and structure thereof will not be further described here. Further, the second clamping assembly located below further comprises a supporting wheel 2425 arranged on one side of the clamping block 2422, which provides certain support to the mounting arm 14 fixed in the mounting groove 2424.

[0035] The turnover mechanism 25 comprises two turnover seats 251 oppositely arranged on the first base 21 for mounting the turnover frame 22, and a turnover assembly 252 arranged on one of the turnover seats 251 and connected to drive the turnover frame 22 to turn over. The turnover frame 22 is respectively mounted at both ends thereof on the two turnover seats 251 through two bearings. The turnover assembly 252 can adopt a servo motor to drive the turnover frame 22 to rotate. When the two spliced housings 11 are spliced, the turnover assembly 252 drives the turnover frame 22 to be inclined between the two turnover seats 251, so as to facilitate workers to splice and spot weld. When the spot welding on both sides of the axle housing body 1 is completed, the turnover assembly 252 drives the turnover frame 22 to be in a horizontal state, thereby facilitating the transfer of the axle housing body 1.

[0036] The welding table 4 comprises two rotating seats 41 oppositely arranged on the second base 3, a welding frame 42 rotatably arranged between the two rotating seats 41, and a rotating assembly 43 arranged on the rotating seat 41 and connected to drive the welding frame 42 to rotate. The welding frame 42 is respectively mounted at both ends thereof on the two rotating seats 41 through two bearings. The rotating assembly 43 can adopt a servo motor to drive the welding frame 42 to rotate by 180°, thereby turning over the axle housing body 1 on the welding frame 42 to realize full welding on the front and back surfaces of the axle housing body 1.

[0037] The first fixing mechanism 5 comprises two first fixing frames 51 oppositely arranged on the welding frame 42, a first fixing assembly 52 arranged on each of the two first fixing frames 51 for fixing the opposite main body segments 13 of the housing, and a second pressing assembly 53 arranged on each of the two first fixing frames 51 for pressing the middle part of the opposite main body segments 13, wherein a full-welding area 54 is formed between the two first fixing frames 51 to facilitate full-welding between the triangular plate 12 and the two main body segments 13.

[0038] The first fixing assembly 52 comprises two first fixing blocks 521 movably arranged on the first fixing frame 51 in left and right opposition, two first fixing wheels 522 arranged on the front end of each of the two first fixing blocks 521 for clamping the opposite main body segments 13, and two first pushing members 523 arranged on the first fixing frame 51 and connected to and driving the movement of the first fixing blocks 521, wherein the second pressing assembly 53 is arranged between the two first fixing wheels 522; specifically, the first pushing members 523 can be in the form of a cylinder, an oil cylinder or a motor cooperating with a screw nut pair to realize the movement of the first fixing blocks 521, which is a common driving movement in the mechanical field, and no further elaboration will be made on the specific selection and structure thereof; further, the second pressing assembly 53, the second fixing mechanism 6 and the first fixing assembly 52 have the same structure as the first pressing assembly 233, the second clamping mechanism 24 and the first clamping assembly 232, and no further elaboration will be made on the specific structure of the second pressing assembly 53, the second fixing mechanism 6 and the rest of the first fixing assembly 52.

[0039] The transfer mechanism 7 comprises a frame 75, a transfer frame 71 movably arranged on the frame 75, a grabbing assembly 72 arranged on the transfer frame 71 for grabbing the axle housing body 1, a transverse driving assembly 73 arranged on the frame 75 for driving the movement of the transfer frame 71, and a lifting driving assembly 74 arranged on the frame 75 for driving the up and down movement of the transfer frame 71, wherein the transverse driving assembly 73 and the lifting driving assembly 74 are common structures in the field of multi-axis movement of components, and can adopt the form of a motor cooperating with a gear and a rack to realize the transverse movement and the up and down movement of the transfer frame 71, and no further elaboration will be made on the specific structure thereof.

[0040] The grabbing assembly 72 comprises two grabbing arms 721 arranged on the transfer frame 71 and capable of moving towards or away from each other, two grabbing claws 722 arranged on the grabbing arms 721 and used for grabbing the two ends of the axle housing body 1 respectively, and two transverse moving members 723 arranged on the transfer frame 71 and used for driving the two grabbing arms 721 to move respectively. The grabbing claws 722 are pneumatic clamps, and the side opposite to the axle housing body 1 is formed with an inwardly extending grabbing groove for embedding the mounting arm 14 of the spliced housing 11. Specifically, two sets of grabbing assemblies 72 are arranged opposite to each other on the two sides of the transfer frame 71. When one grabbing assembly moves the axle housing body 1 on the turnover frame 22 to the welding table 4, the other grabbing assembly simultaneously moves the axle housing body 1 on the welding table 4 to the transition frame 9. Further, the transverse moving members 723 can move the grabbing arms 721 by means of a motor cooperating with a gear rack, and the specific structure thereof will not be described further.

[0041] When the axle housing body 1 is welded, the two spliced housings 11 and the four triangular plates 12 are first spot-welded on the splicing spot welding tool 2, and then transferred to the welding table 4, and the welding equipment 8 is used to fully weld the axle housing body 1 after spot welding. The specific process comprises the following steps:

[0042] Step one: The turnover mechanism 25 controls the turnover frame 22 to be arranged obliquely, adjusts the positions of the two second clamping mechanisms 24 according to the size of the axle housing body 1, so that the two second clamping mechanisms 24 can be opposite to the mounting arms 14 of the spliced housings 11, supports the main body segment 13 of one spliced housing 11 on the first clamping assembly 232 located below, and at this time, the two mounting arms 14 are just supported on the two second clamping assemblies 242 located below;

[0043] Step two: another spliced housing is spliced on the spliced housing located below, and then the first clamping assembly 232 located above, the first pressing assembly 233, the two second clamping assemblies 242 and the first pressing assembly 233 located below are controlled to act, so as to clamp and fix the two spliced housings 11, at this time, the worker can spot weld the two triangular plates 12 and the two mounting arms 14 on one side of the axle housing body 1. When the two triangular plates 12 and the two spliced housings 11 on one side of the axle housing body 1 are spot welded, the turnover mechanism 25 drives the turnover frame 22 to turn 180°, and then spot welds the two triangular plates 12 and the two mounting arms 14 opposite to each other on the other side of the axle housing body 1;

[0044] Step three, the turnover mechanism 25 controls the turnover frame 22 to turn to the horizontal state, the transverse drive assembly 73 cooperates with the lifting drive assembly 74, so that the transfer frame 71 on the gripping assembly 72 close to the turnover frame 22 on the bridge shell body 1 on the spot welding frame 22 is moved to the welding frame 42, and the welding equipment 8 is used to complete the full welding of the bridge shell body 1 on one side, when the bridge shell body 1 completes one side full welding, the rotating assembly 43 drives the welding frame 42 to turn over 180°, and the other side of the bridge shell body 1 is full welded, so as to complete the full welding of the bridge shell body 1, when the bridge shell body 1 is transferred from the turnover frame 22 to the welding frame 42, the gripping assembly on the other side of the transfer frame 71 will simultaneously grab the full-welded bridge shell body 1 on the welding frame 42 and move to the transition frame 9, so that the full-welded bridge shell body 1 passes through the transition frame 9 and enters the next station.

[0045] The application limits the structure of the splicing spot welding tool 2, sets the turnover mechanism 25 to cooperate with the turnover frame 22, realizes the spot welding between the two splicing housings 11 and the four triangular plates 12, realizes the automatic turnover process without manual turnover, prevents the high-temperature welding part from causing harm to the workers during the manual turnover process, the first clamping mechanism 23 and the second clamping mechanism 24 are arranged on the turnover frame 22, the two splicing housings 11 after splicing are clamped and fixed to ensure the spot welding position of the triangular plate 12, improve the welding quality of the bridge shell body 1, and effectively improve the yield of the bridge shell body 1.

[0046] The above is only a preferred embodiment of the application, and therefore cannot limit the scope of the application. Any equivalent changes and modifications made according to the scope of the application and the content of the specification shall still be within the scope of the application.

Claims

1. A spot welding fixture for joining a bridge housing body with a triangular plate, wherein the bridge housing body is welded together by two oppositely arranged spliced ​​housings and four triangular plates, the spliced ​​housing comprising a main body section and two mounting arms extending outwardly from both ends of the main body section, characterized in that: The system comprises a first base, a turning frame rotatably arranged on the first base, a first clamping mechanism arranged on the turning frame for clamping two spliced ​​shell body sections, two second clamping mechanisms spaced apart on the turning frame for respectively clamping two mounting arms of the two spliced ​​shells, and a turning mechanism arranged on the first base and connected to and driving the turning frame to turn; The first clamping mechanism includes two first clamping frames arranged on the flip frame in an upper and lower relative manner, first clamping assemblies respectively arranged on the two first clamping frames for clamping the relative spliced ​​shell body sections, and two first pressing assemblies respectively arranged on the two first clamping frames for pressurizing the middle parts of the relative body sections, the first clamping assemblies including two first moving blocks arranged on the first clamping frames for being movable left and right relative to each other, two first clamping wheels respectively arranged at the front ends of the two first moving blocks for clamping the relative body sections, and two first moving members respectively arranged on the first clamping frames for connecting to and driving the relative first moving blocks to move, the first pressing assembly being arranged between the two first clamping wheels; The second clamping mechanism includes two second clamping frames arranged on the flip frame in an upper and lower relative manner, two second clamping assemblies arranged on the second clamping frames in a left and right relative manner for clamping the mounting arm, a support block movably arranged on the two second clamping frames, and a second driving member arranged on one second clamping frame and connected to and driving the support block to move, the second clamping assembly includes a second moving block movably arranged on the second clamping frame, a clamping block arranged at the front end of the second moving block, and a second moving member arranged on the second clamping frame and connected to and driving the second moving block to move; The first clamping mechanism further includes a connecting plate connecting the two first clamping frames.

2. The spot welding fixture for joining a triangular plate bridge housing body according to claim 1, characterized in that: The first pressurizing assembly includes a first pressurizing head that can be moved up and down on the first clamping frame, a pressurizing block arranged at the front end of the first pressurizing head, and a first driving assembly arranged on the first clamping frame and connected to and driving the first pressurizing head to move. The pressurizing block and the two first clamping wheels are distributed in a triangular shape to clamp and fix the main section of the spliced ​​shell.

3. The spot welding fixture for joining a triangular plate bridge housing body according to claim 1, characterized in that: The first clamping assembly also includes two first guide members arranged on the first clamping frame for guiding the movement of the two first moving blocks. The first guide members include a plurality of first guide rods arranged on the first clamping frame at intervals along the moving direction of the first moving block and a first guide hole arranged on the first moving block through which the plurality of first guide rods can pass. The first clamping wheel is rotatably arranged at the front end of the first moving block.

4. The spot welding fixture for joining a triangular plate bridge housing body according to claim 1, characterized in that: The two second clamping frames can be moved left and right and are arranged on the flip frame. The second clamping mechanism also includes two first movable plates respectively arranged on one side of the two second clamping frames and first locking assemblies respectively arranged between the two first movable plates and the flip frame. The first locking assembly includes a first locking plate arranged on the flip frame and supported below the first movable plate, a first locking bolt arranged on the locking plate and a first movable hole arranged on the first movable plate and extending along its moving direction. The first locking bolt passes through the first movable hole and is threadedly connected to the first locking plate.

5. A welding device for a triangular plate bridge housing body, characterized in that: It includes the splicing spot welding tool as described in any one of claims 1 to 4, a second base arranged on one side of the first base, a welding table arranged on the second base, a first fixing mechanism arranged on the welding table for fixing the two spliced ​​shell body sections, two second fixing mechanisms arranged on the welding table at intervals for fixing the two mounting arms of the two spliced ​​shells respectively, a transfer mechanism for transferring the bridge shell body from the flip frame to the welding table, and welding equipment for fully welding the bridge shell body on the welding table.

6. The welding device for a triangular plate bridge housing body according to claim 5, characterized in that: The transfer mechanism includes a frame, a transfer frame movably arranged on the frame, a grabbing assembly arranged on the transfer frame for grabbing the bridge housing body, a lateral driving assembly arranged on the frame for driving the transfer frame to move lateraly, and a lifting driving assembly arranged on the frame for driving the transfer frame to move up and down. The grabbing assembly includes two grabbing arms that can be moved toward or away from each other and arranged on the transfer frame, two grabbing claws arranged on the grabbing arms for clamping one end of the bridge housing body, and two lateral moving parts arranged on the transfer frame for respectively driving the two grabbing arms to move. The grabbing claw is formed with an inwardly extending grabbing groove on the side opposite to the bridge housing body, and the grabbing groove can be used for the installation arm of the relative splicing shell to be embedded.

7. The welding device for a triangular plate bridge housing body according to claim 6, characterized in that: It also includes a transition frame arranged on one side of the welding table. There are two groups of grabbing components, which are relatively arranged on both sides of the transfer frame. When one grabbing component grabs the bridge shell body on the flip frame and moves it to the welding table, the other grabbing component grabs the bridge shell body on the welding table and moves it to the transition frame.

8. The welding device for a triangular plate bridge housing body according to claim 5, characterized in that: The first fixing mechanism includes two first fixing frames arranged relatively upper and lower on the welding table, first fixing components respectively arranged on the two first fixing frames for fixing the relatively spliced ​​shell main sections, and second pressing components respectively arranged on the two first fixing frames for pressurizing the middle parts of the relatively main sections. The first fixing component includes two first fixing blocks respectively arranged on the first fixing frames for being movable left and right, two first fixing wheels respectively arranged at the front ends of the two first fixing blocks for clamping the relatively main sections, and two first pushing members respectively arranged on the first fixing frames for connecting and driving the movement of the relatively first fixing blocks. The second pressing component is arranged between the two first fixing wheels.

Images