Welding fixture for central control heat dissipation system shell of new energy automobile

Abstract

The utility model relates to a welding clamp for a new energy automobile central control heat dissipation system shell. The welding clamp comprises a bottom plate, a workbench and a plurality of clamping modules. The workbench is fixed to the bottom plate, the upper surface of the workbench is provided with a profiling face, and the profiling face is matched with the shell in shape. The multiple clamping modules are arranged on the bottom plate around the workbench. The clamping module comprises an oil cylinder, a pressing block and a connecting frame; a piston rod of the oil cylinder is vertically arranged upwards; the rear end of the pressing block is hinged to the top of a piston rod of the oil cylinder. The bottom of the connecting frame is hinged to the bottom plate, and the top of the connecting frame is hinged to the middle of the pressing block. And the oil cylinders are electrically connected with an external control system. The shell is effectively fixed, and it is ensured that follow-up welding is effectively carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of metal material processing, in particular to a welding fixture for a housing of a central control cooling system of a new energy vehicle. Background Art

[0002] like Figure 1 and Figure 2 As shown, the housing of the central control cooling system of a new energy vehicle includes a housing, two water pipes and a cover plate. The housing has straight reinforcing ribs. During assembly and welding, the two water pipes need to be pressed into the water pipe connecting holes on the housing, and then the cover plate is welded to the housing.

[0003] During the welding process of the shell, the existing fixing device cannot effectively fix it, and during the welding process, the welding head is prone to interfere with the clamping device, affecting the welding quality. Utility Model Content

[0004] The purpose of the utility model is to provide a welding fixture for the shell of the central control cooling system of a new energy vehicle, so as to effectively fix the shell and ensure that subsequent welding is effectively carried out.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model provides a welding fixture for the housing of the central control cooling system of a new energy vehicle, including a base plate, a workbench and a plurality of clamping modules;

[0006] The workbench is fixed on the bottom plate, and the upper surface of the workbench has a contoured surface, and the contoured surface is adapted to the shape of the shell;

[0007] A plurality of the clamping modules are arranged on the bottom plate around the workbench;

[0008] The clamping module includes an oil cylinder, a pressing block and a connecting frame;

[0009] The piston rod of the oil cylinder is arranged vertically upward;

[0010] The rear end of the pressing block is hinged to the top of the piston rod of the oil cylinder;

[0011] The bottom of the connecting frame is hinged to the bottom plate, and the top of the connecting frame is hinged to the middle part of the pressing block;

[0012] The oil cylinders are all electrically connected to an external control system.

[0013] Preferably, a reset module is provided on the bottom plate directly behind each clamping module;

[0014] The reset module comprises a mounting seat, a support plate and a pressure wheel;

[0015] The bottom of the support plate is hinged to the lower part of the side surface of the mounting seat facing the clamping module;

[0016] The pressing wheel is horizontally rotatably arranged on the upper side of the supporting plate facing the clamping module;

[0017] A first sensor is provided on the side of the mounting seat facing the clamping module;

[0018] A spring is arranged on the mounting seat, one end of the spring is connected to the mounting seat, and the other end of the spring is connected to the support plate.

[0019] Preferably, a working pressing block is hingedly connected to the lower surface of the front end of the pressing block;

[0020] A groove is provided at the middle position of the lower surface of the working pressing block, and the groove runs through two sides of the working pressing block.

[0021] Preferably, two supporting blocks are plugged into the bottom plate;

[0022] The two support blocks are adapted to the inner wall of the water pipe;

[0023] A second sensor is provided at each position on the bottom plate where the support block is inserted, and the second sensor is electrically connected to an external control system.

[0024] Preferably, a plurality of oil pressure gauges are provided on the bottom plate, the number of the oil pressure gauges is equal to the number of the oil cylinders, and each of the oil pressure gauges is arranged on the oil pipeline of the corresponding oil cylinder.

[0025] Compared with the prior art, the welding fixture for the housing of the central control cooling system of the new energy vehicle has the following advantages:

[0026] (1) Effectively fix the shell and effectively avoid interference with the stirring head during welding, ensuring the subsequent welding quality;

[0027] (2) Simple structure and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the housing of the central control cooling system of a new energy vehicle in the background technology;

[0029] Figure 2 An exploded view of the housing of the central control cooling system of a new energy vehicle in this embodiment;

[0030] Figure 3 is a schematic structural diagram of a welding fixture in this embodiment;

[0031] Figure 4 for Figure 3 A partial enlarged view of the middle part;

[0032] Figure 5 for Figure 3 A partial enlarged view of point B in the middle. DETAILED DESCRIPTION

[0033] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0034] like Figure 3 As shown, the welding fixture for the housing of the central control cooling system of a new energy vehicle of the present utility model comprises a base plate 4, a workbench 5 and a plurality of clamping modules 6;

[0035] The workbench 5 is fixed on the bottom plate 4, and the upper surface of the workbench 5 has a contour surface 7, and the contour surface 7 is adapted to the shape of the housing 1;

[0036] A plurality of the clamping modules 6 are arranged on the bottom plate 4 around the workbench 5; Figure 4 As shown, the clamping module 6 includes a cylinder 8, a pressure block 9 and a connecting frame 10; the piston rod of the cylinder 8 is vertically arranged upward; the rear end of the pressure block 9 is hinged to the top of the piston rod of the cylinder 8; the bottom of the connecting frame 10 is hinged to the bottom plate 4, and the top of the connecting frame 10 is hinged to the middle part of the pressure block 9; the cylinder 8 is electrically connected to the external control system; during the welding process, the housing of the central control cooling system of the new energy vehicle can be effectively fixed. When the welding stirring head moves to the vicinity of a certain clamping module, the cylinder drives the pressure block to lift up and avoid the stirring head, effectively ensuring that the stirring head is effectively welded along the gap between the housing and the cover plate.

[0037] Furthermore, in the present embodiment, a reset module 11 is provided on the base plate 4 directly behind each clamping module 6; the reset module 11 comprises a mounting seat 12, a support plate 13 and a pressure wheel 14; the bottom of the support plate 13 is hinged to the lower part of the side of the mounting seat 12 facing the clamping module 6; the pressure wheel 14 is horizontally rotatably arranged on the upper part of the side of the support plate 13 facing the clamping module 6; a first sensor (not shown in the figure) is provided on the side of the mounting seat 12 facing the clamping module 6; a spring (not shown in the figure) is provided on the mounting seat 12, one end of the spring is connected to the mounting seat 12, and the other end is connected to the support plate 13. When the stirring head on the friction stir welding equipment is in operation, interference between the clamping module 6 and the stirring head can be effectively avoided. After the stirring head is operated, the reset module 11 can be reset.

[0038] In this embodiment, if Figure 5As shown, a working pressing block 15 is hinged on the lower surface of the front end of the pressing block 9; a groove 16 is provided in the middle position of the lower surface of the working pressing block 15, and the groove 16 runs through both sides of the working pressing block 15; on the one hand, a certain degree of freedom is given to the working pressing block 15, so that when the pressing block 9 rotates, the working pressing block 15 can better press the cover plate 2 and the shell 1, and at the same time, the groove 16 can effectively avoid the gap between the cover plate 2 and the shell 1, and avoid the irregular protrusion formed at the gap due to stamping fixation affecting the fixation of the cover plate 2 and the shell 1.

[0039] In this embodiment, two support blocks 17 are plugged into the bottom plate 4; the two support blocks 17 are matched with the inner wall of the water pipe 3; the second sensor 18 is provided at the position where the support blocks 17 are plugged into the bottom plate 4, and the second sensor 18 is electrically connected to the external control system. The water channel hole on the welding path, the thickness of the shell 1 is less than 12mm, and the strength is insufficient. Under the influence of high temperature and high pressure during welding, it will collapse and cause welding defects. In order to control this collapse, a local support method is adopted during welding, and a support block 17 is inserted into the hole.

[0040] In this embodiment, a plurality of oil pressure gauges 19 are provided on the bottom plate 4, and the number of the oil pressure gauges 19 is equal to the number of the oil cylinders 8, and each of the oil pressure gauges 19 is provided on the oil pipeline of the corresponding oil cylinder 8. In order to resist the shrinkage and deformation of the product during welding, combined with the verification of flatness, the oil pressure gauges 19 monitor the oil pressure in the oil pipeline where the oil cylinder is located in real time.

[0041] The welding process is as follows,

[0042] The welding process of the housing of the central control cooling system of the new energy vehicle of this embodiment includes the following steps:

[0043] S1, water pipe assembly: apply glue to the outer wall of the connecting end of the water pipe 3, and then press it into the water pipe connecting hole of the housing 1;

[0044] S2, cover plate assembly: cover the cover plate 2 on the housing 1 of the water pipe assembled in step S1;

[0045] S3, installing the housing 1 with the cover plate 2 assembled in S2 on a welding fixture;

[0046] S4, friction stir welding: design the welding path and drive the friction stir welding equipment. The stirring head moves from one end of the reinforcement rib located on the inner side of the shell to the other end of the reinforcement rib along the length of the reinforcement rib, and then moves around the gap between the shell and the cover plate for welding to achieve welding assembly of the cover plate and the shell.

[0047] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope defined by the claims of this application.

Claims

1. A welding fixture for the housing of the central control cooling system of a new energy vehicle, characterized in that: It includes a base plate, a workbench and a number of clamping modules; The workbench is fixed on the bottom plate, and the upper surface of the workbench has a contoured surface, and the contoured surface is adapted to the shape of the shell; A plurality of the clamping modules are arranged on the bottom plate around the workbench; The clamping module includes an oil cylinder, a pressing block and a connecting frame; The piston rod of the oil cylinder is arranged vertically upward; The rear end of the pressing block is hinged to the top of the piston rod of the oil cylinder; The bottom of the connecting frame is hinged to the bottom plate, and the top of the connecting frame is hinged to the middle part of the pressing block; The oil cylinders are all electrically connected to an external control system.

2. The welding fixture for the housing of the central control cooling system of a new energy vehicle as claimed in claim 1, characterized in that: A reset module is provided on the bottom plate directly behind each clamping module; The reset module comprises a mounting seat, a support plate and a pressure wheel; The bottom of the support plate is hinged to the lower part of the side surface of the mounting seat facing the clamping module; The pressing wheel is horizontally rotatably arranged on the upper side of the supporting plate facing the clamping module; A first sensor is provided on the side of the mounting seat facing the clamping module; A spring is arranged on the mounting seat, one end of the spring is connected to the mounting seat, and the other end of the spring is connected to the support plate.

3. The welding fixture for the housing of the central control cooling system of a new energy vehicle as claimed in claim 1 or 2, characterized in that: A working pressing block is hingedly connected to the lower surface of the front end of the pressing block; A groove is provided at the middle position of the lower surface of the working pressing block, and the groove runs through two sides of the working pressing block.

4. The welding fixture for the housing of the central control cooling system of a new energy vehicle as claimed in claim 1, characterized in that: Two supporting blocks are inserted into the bottom plate; The two support blocks are adapted to the inner wall of the water pipe; A second sensor is provided at each position on the bottom plate where the support block is inserted, and the second sensor is electrically connected to an external control system.

5. The welding fixture for the housing of the central control cooling system of a new energy vehicle as claimed in claim 1, characterized in that: A plurality of oil pressure gauges are arranged on the bottom plate, the number of the oil pressure gauges is equal to the number of the oil cylinders, and each of the oil pressure gauges is arranged on the oil pipeline of the corresponding oil cylinder.

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