BDU laser welding pressing and protecting tool

Abstract

The utility model relates to the technical field of BDU laser welding of new energy automobiles, and discloses a BDU laser welding pressing and protecting tool which comprises a supporting bottom plate, a liftable connecting frame is installed on one side of the supporting bottom plate, a dust removal pipe is installed at the upper end of the connecting frame, a pressing assembly is installed at the lower end of the connecting frame, and the dust removal pipe is connected with the pressing assembly. Through the design that the air cylinder drives the floating mechanism and the pressing head to descend before welding, the pressing head rapidly presses a welding point, the stability of a BDU and the stability of the welding process are guaranteed, then the welding quality can be improved, and the technological requirement for laser welding of small-size welding points is met; the floating mechanism above the pressure head enables the pressure head to have elasticity, so that the dimensional tolerance of a product can be effectively absorbed, and the welding stability is ensured; and the laser is adopted to emit laser to perform laser welding on the BDU, so that the welding efficiency is improved, the welding time of each welding spot is less than one second, and the manufacturing cost of product processing is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, in particular to BDU laser welding of new energy vehicles, and specifically to a BDU laser welding pressing and protective tooling. Background Art

[0002] BDU (Battery Disconnect Unit) plays an important role in the battery system of new energy vehicles, and laser welding technology plays a key role in the manufacturing process of BDU.

[0003] After searching, the patent with application number CN202310359622.2 discloses an electric vehicle BDU, and its welding equipment and process, which includes a BDU body, a socket body and wires, wherein the BDU body includes a plurality of busbars; the socket body includes a plurality of wiring pieces, and the busbars and the wiring pieces are electrically connected with wires, and the two ends of the wires are welded to the busbars and the wiring pieces respectively. The welding equipment controls the length of the wire to be welded through the wire supply mechanism, and clamps the two ends of the wire by adjusting the sliding of the clamping mechanism. By adjusting the clamping sequence of the two clamping mechanisms, the excess length of the wire is folded between the two clamping mechanisms, which facilitates the clamping of wires of different lengths and is convenient for use. After clamping, the parts to be welded at both ends of the wire protrude from the clamping mechanism and align the welding end. When wire welding is required, only the welding gun needs to be started to weld the wire end with the BDU body or the socket body through the welding end, which is convenient for use.

[0004] Traditional BDU (battery disconnect unit) welding has a low degree of automation and low welding efficiency. The welding time for each weld point is greater than one second, which increases the manufacturing cost of product processing. In addition, traditional BDU welding equipment is not convenient for compacting the product before welding, which reduces the stability of the product and further reduces the stability of the welding. Therefore, we need to propose a BDU laser welding compaction and protective tooling. Utility Model Content

[0005] The purpose of the utility model is to provide a BDU laser welding clamping and protection tooling, which uses a design in which a cylinder drives a floating mechanism and a pressure head to descend before welding, so that the pressure head can quickly press the welding point, thereby ensuring the stability of the BDU and the stability of the welding process, thereby improving the welding quality and meeting the process requirements of laser welding of small-sized welds; the floating mechanism above the pressure head makes the pressure head elastic, which can effectively absorb the dimensional tolerance of the product and ensure the stability of welding; and a laser is used to emit laser to perform laser welding on the BDU, which improves the welding efficiency, and the welding time of each weld point is less than one second, thereby reducing the manufacturing cost of product processing, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a BDU laser welding clamping and protective tooling, comprising a supporting base plate, a lifting and lowering connecting frame is installed on one side of the supporting base plate, a dust removal pipe is installed on the upper end of the connecting frame, a clamping assembly is installed on the lower end of the connecting frame, the clamping assembly comprises a connecting plate connected to the connecting frame, a floating pressure head mounting seat located below the connecting plate, a pressure head is installed on the floating pressure head mounting seat, the connecting plate is set as a hollow connecting plate, and a floating mechanism is arranged between the connecting plate and the floating pressure head mounting seat;

[0007] The floating mechanism includes a bearing pressure plate fixed at the bottom of the connecting plate and a linear bearing located inside the connecting plate. The bottom end of the linear bearing passes through the bearing pressure plate and is connected to a floating pressure head mounting seat. The floating pressure head mounting seat is also connected to a floating spring sleeved on the outer periphery of the lower end of the linear bearing.

[0008] Preferably, a guide rail is installed on one side of the supporting base plate, a baffle is connected to the bottom of the supporting base plate, and the bottom of the guide rail is connected to the baffle.

[0009] Preferably, a slider is slidably mounted on the guide rail, and the connecting frame is fixed on the slider.

[0010] Preferably, the connecting frame includes a vertical plate and a horizontal plate which are vertically arranged, the vertical plate is fixed on the sliding block, and the dust removal pipe and the clamping assembly are installed on the horizontal plate.

[0011] Preferably, a detection sheet is installed on the transverse plate, and ribs are connected to the vertical surfaces of the vertical plate and the transverse plate.

[0012] Preferably, an L-shaped support frame is also connected to the support base plate, and a cylinder for driving the clamping assembly to rise and fall is installed on the support frame. One end of the piston rod of the cylinder is connected to a floating joint, and the bottom of the floating joint is connected to a cylinder connecting block, and the connecting frame is installed on the cylinder connecting block.

[0013] Preferably, a speed regulating valve is installed on the cylinder body of the cylinder.

[0014] Preferably, a protective gas filling interface is installed on one side of the floating pressure head mounting seat.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model uses a design in which a cylinder drives a floating mechanism and a pressure head to descend before welding, so that the pressure head can quickly press the welding point, thereby ensuring the stability of the BDU and the stability of the welding process, thereby improving the welding quality and meeting the process requirements of laser welding of small-sized welds; the floating mechanism above the pressure head makes the pressure head elastic, which can effectively absorb the dimensional tolerance of the product and ensure the stability of welding; and a laser is used to emit laser to perform laser welding on the BDU, which improves the welding efficiency. The welding time of each weld point is less than one second, thereby reducing the manufacturing cost of product processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a bottom view of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the floating mechanism, floating pressure head mounting seat, pressure head and protective gas charging interface of the utility model.

[0020] In the figure: 1. Support base plate; 2. Support frame; 3. Cylinder; 4. Speed ​​regulating valve; 5. Floating joint; 6. Guide rail; 7. Slider; 8. Cylinder connecting block; 9. Baffle; 10. Vertical plate; 11. Horizontal plate; 12. Rib plate; 13. Detection sheet; 14. Dust removal pipe; 15. Connecting plate; 16. Floating mechanism; 161. Linear bearing; 162. Bearing pressure plate; 163. Floating spring; 17. Floating pressure head mounting seat; 18. Pressure head; 19. Protective gas charging interface. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 The utility model provides a technical solution: a BDU laser welding clamping and protective tooling, including a supporting base plate 1, a lifting connecting frame is installed on one side of the supporting base plate 1, the connecting frame is set as an L-shaped connecting frame, a dust removal pipe 14 is installed on the upper end of the connecting frame, and the dust removal pipe 14 is used to discharge the smoke generated during the welding process. A clamping assembly is installed at the lower end of the connecting frame, and the clamping assembly is set as a floating clamping assembly, which can absorb the dimensional tolerance of the product;

[0023] The clamping assembly includes a connecting plate 15 connected to the connecting frame, a floating pressure head mounting seat 17 located below the connecting plate 15, a pressure head 18 is mounted on the floating pressure head mounting seat 17, the connecting plate 15 is configured as a hollow connecting plate, and a floating mechanism 16 is provided between the connecting plate 15 and the floating pressure head mounting seat 17; the floating mechanism 16 is used to absorb the product dimensional tolerance.

[0024] The floating mechanism 16 includes a bearing pressure plate 162 fixed to the bottom of the connecting plate 15 and a linear bearing 161 located inside the connecting plate 15. The linear bearing 161 plays a guiding role. The bottom end of the linear bearing 161 passes through the bearing pressure plate 162 and is connected to the floating pressure head mounting seat 17. The floating pressure head mounting seat 17 is also connected to a floating spring 163 that is sleeved on the outer periphery of the lower end of the linear bearing 161.

[0025] The pressure head 18 is pressed on the welding point of the product, the floating spring 163 is compressed, and the linear bearing 161 guides the retraction of the floating spring 163. Through the design of the floating clamping assembly, the floating spring 163 provides a lower holding force, absorbs dimensional tolerances, and improves the stability of welding.

[0026] A guide rail 6 is installed on one side of the support base plate 1 , and the guide rail 6 is vertically arranged. A baffle plate 9 is connected to the bottom of the support base plate 1 , and the bottom of the guide rail 6 is connected to the baffle plate 9 , which increases the stability of the installation of the guide rail 6 .

[0027] A slide block 7 is slidably mounted on the guide rail 6 , and the connecting frame is fixed on the slide block 7 , so that the connecting frame can be driven to rise and fall through the guide rail 6 .

[0028] The connecting frame includes a vertical plate 10 and a horizontal plate 11, the vertical plate 10 is fixed on the slider 7, and the dust removal pipe 14 and the pressing assembly are installed on the horizontal plate 11. The dust removal pipe 14 is installed on the upper surface of the horizontal plate 11, and the pressing assembly is installed on the lower surface of the horizontal plate 11.

[0029] A detection sheet 13 is installed on the transverse plate 11 , and ribs 12 are connected to the vertical surfaces of the vertical plate 10 and the transverse plate 11 . The ribs 12 can increase the stability of the connection between the vertical plate 10 and the transverse plate 11 .

[0030] An L-shaped support frame 2 is also connected to the support base plate 1, and a cylinder 3 for driving the clamping assembly to rise and fall is installed on the support frame 2. One end of the piston rod of the cylinder 3 is connected to a floating joint 5, and the bottom of the floating joint 5 is connected to a cylinder connecting block 8, and the connecting frame is installed on the cylinder connecting block 8.

[0031] The cylinder 3 drives the cylinder connecting block 8 to move downward, thereby driving the connecting frame, the dust removal pipe 14, and the pressing assembly to move downward, and the connecting frame drives the slide block 7 to slide on the guide rail 6.

[0032] A speed regulating valve 4 is installed on the cylinder body of the cylinder 3.

[0033] A protective gas charging interface 19 is installed on one side of the floating pressure head mounting seat 17 .

[0034] When in use, the product is placed on the machine and fixed, and then the protective cover is installed (the machine and the protective cover are not shown in the figure), and then the cylinder 3 is driven to operate. The cylinder 3 drives the cylinder connecting block 8 to move downward, and then drives the connecting frame, the dust removal pipe 14, and the clamping assembly to move downward, and the connecting frame drives the slider 7 to slide on the guide rail 6 to ensure the stability of the downward movement of the clamping assembly, so that the clamping assembly is pressed on the product. During this process, the pressure head 18 is pressed on the welding point of the product, and the floating spring 163 is compressed. The linear bearing 161 guides the retraction of the floating spring 163. Through the design of the floating clamping assembly, the floating spring 163 provides a downward holding force, absorbs dimensional tolerances, and improves the stability of welding. After the product is clamped, the laser (not shown in the figure) is operated to emit a laser to start welding.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A BDU laser welding clamping and protection tooling, characterized in that: include: Supporting base plate (1); A liftable connecting frame is installed on one side of the supporting base plate (1), a dust removal pipe (14) is installed on the upper end of the connecting frame, and a clamping assembly is installed on the lower end of the connecting frame, the clamping assembly comprises a connecting plate (15) connected to the connecting frame, a floating pressure head mounting seat (17) located below the connecting plate (15), a pressure head (18) is installed on the floating pressure head mounting seat (17), the connecting plate (15) is set as a hollow connecting plate, and a floating mechanism (16) is provided between the connecting plate (15) and the floating pressure head mounting seat (17); The floating mechanism (16) comprises a bearing pressure plate (162) fixed to the bottom of the connecting plate (15), and a linear bearing (161) located inside the connecting plate (15); the bottom end of the linear bearing (161) passes through the bearing pressure plate (162) and is connected to a floating pressure head mounting seat (17); and the floating pressure head mounting seat (17) is also connected to a floating spring (163) sleeved on the outer periphery of the lower end of the linear bearing (161).

2. The BDU laser welding clamping and protection tooling according to claim 1 is characterized by: A guide rail (6) is installed on one side of the supporting base plate (1), a baffle (9) is connected to the bottom of the supporting base plate (1), and the bottom of the guide rail (6) is connected to the baffle (9).

3. The BDU laser welding clamping and protection tooling according to claim 2 is characterized in that: A slider (7) is slidably mounted on the guide rail (6), and the connecting frame is fixed on the slider (7).

4. The BDU laser welding clamping and protection tooling according to claim 1 is characterized in that: The connecting frame comprises a vertical plate (10) and a horizontal plate (11) which are arranged vertically. The vertical plate (10) is fixed on a sliding block (7), and the dust removal pipe (14) and the pressing assembly are installed on the horizontal plate (11).

5. The BDU laser welding clamping and protection tooling according to claim 4 is characterized in that: A detection sheet (13) is installed on the transverse plate (11), and ribs (12) are connected to the vertical surfaces of the vertical plate (10) and the transverse plate (11).

6. The BDU laser welding clamping and protection tooling according to claim 1 is characterized in that: The support base plate (1) is also connected to an L-shaped support frame (2), and a cylinder (3) for driving the clamping assembly to rise and fall is installed on the support frame (2). One end of the piston rod of the cylinder (3) is connected to a floating joint (5), and the bottom of the floating joint (5) is connected to a cylinder connecting block (8), and the connecting frame is installed on the cylinder connecting block (8).

7. The BDU laser welding clamping and protection tooling according to claim 6 is characterized by: A speed regulating valve (4) is installed on the cylinder body of the cylinder (3).

8. The BDU laser welding clamping and protection tooling according to claim 1 is characterized by: A protective gas charging interface (19) is installed on one side of the floating pressure head mounting seat (17).

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