A welding device for electric vehicle frame production

Abstract

The application relates to the field of electric vehicle production, in particular to a welding device for electric vehicle frame production, which comprises a working bin, a mounting disc one, a mounting disc two and the like; one driving unit is connected to the front side and the rear side of the working bin; the driving unit is connected with the mounting disc one and is used for driving the mounting disc one to move; the mounting disc one is connected with a rotatable mounting disc two, and the spacing between the mounting disc two and the mounting disc one is adjustable; the mounting disc one and the mounting disc two are each connected with two fixing rods used for clamping the frame body. The clamping plates are moved away from each other, the clamped connecting plates are straightened, the connecting plates are tightly attached to the butt joint of the frame body, the DD motor on the mounting disc one is controlled, the electric telescopic rod and the mounting disc two are driven to rotate, the mounting disc two drives the frame body to rotate through the fixing rods, the inclined part of the frame body is adjusted to the horizontal state, and the arc-shaped welding machine is used for welding each part of the frame body.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle manufacturing, and more particularly to a welding apparatus for the production of electric vehicle frames. Background Technology

[0002] Electric vehicles are vehicles powered by electricity. They use batteries to power motors that drive the wheels. They are environmentally friendly and have low noise, making them one of the main modes of transportation in daily life.

[0003] In the production process of electric vehicle frames, in order to enhance the structural strength between frames and provide an installation reference for subsequent components such as motors, connecting plates need to be welded between frames. However, in order to reduce the overall weight of the electric vehicle, the connecting plates are relatively thin and prone to bending. During welding, it is difficult to accurately align them with the curved frame, which leads to quality problems such as misalignment and uneven splicing at the welded parts, and cannot meet the positioning stability requirements of the existing frame welding process.

[0004] In summary, this application proposes a welding apparatus for the production of electric vehicle frames, thereby improving the aforementioned technical problems. Summary of the Invention

[0005] In order to overcome the problems of uneven splicing and unreliable fixing caused by the difficulty in aligning and welding the connecting plate with the arc-shaped frame in the existing technology, the present invention provides a welding device for the production of electric vehicle frames.

[0006] The technical solution is as follows: A welding device for electric vehicle frame production includes a working chamber; it also includes a mounting disc 1; a drive unit is connected to the front and rear sides of the working chamber; the drive unit is connected to the mounting disc 1 and is used to drive the mounting disc 1 to move; the mounting disc 1 is connected to a rotatable mounting disc 2, and the distance between the mounting disc 2 and the mounting disc 1 is adjustable; the mounting disc 1 and the mounting disc 2 are each connected to two fixing rods for clamping the frame body, and the distance between the two fixing rods on the mounting disc 1 is adjustable, and the distance between the two fixing rods on the mounting disc 2 is adjustable; each fixing rod is rotatably connected to a pressing rod; the drive unit is connected to a welding unit for welding the frame body.

[0007] Furthermore, the drive unit includes a guide rail 1, a moving block 1, a guide rail 2, a moving block 2, a moving block 3, and a robotic arm; two guide rails 1 are fixedly connected to the front and rear sides of the work chamber; each guide rail 1 is slidably connected to a moving block 1; the two moving blocks 1 on the same side are jointly fixedly connected to a guide rail 2; the moving block 2 is slidably connected to the guide rail 2 located on the rear side; the moving block 3 is mounted on the robotic arm, and the mounting disk 1 is fixedly connected to the free end of the robotic arm.

[0008] Furthermore, the welding unit includes a mounting frame, an electric push rod 1, an arc welding machine, a mounting block, an arc-shaped electric gripper, a clamping plate, and an electromagnet; each moving block 2 is connected to two electric push rods 1; the telescopic parts of the two electric push rods 1 on the same side are jointly fixed to a mounting frame; each mounting frame is fixed to two mounting blocks; each mounting block is equipped with a pair of arc-shaped electric grippers; each mounting frame is equipped with an arc welding machine located between the two pairs of arc-shaped electric grippers; each end of each arc-shaped electric gripper is fixed to a clamping plate; on the same pair of arc-shaped electric grippers, the clamping plate on the upper side is fixed to an electromagnet.

[0009] Furthermore, it also includes an electric push rod two and a pressing plate; the electric push rod two is fixedly connected to the mounting block; the pressing plate located between the two arc-shaped electric grippers is fixedly connected to the telescopic part of the electric push rod two.

[0010] Furthermore, it also includes rollers; the extrusion plate is rotatably connected to several rollers.

[0011] Furthermore, it also includes positioning blocks; two positioning blocks are fixed to each end of each fixing rod.

[0012] Furthermore, the inner surface of the arc-shaped electric gripper is set as a rough surface.

[0013] Furthermore, the extrusion plate is configured in a V-shape.

[0014] Furthermore, an arc-shaped pressure plate is fixed to the lower pressure rod on mounting disc one, and an arc-shaped pressure plate is fixed to the upper pressure rod on mounting disc two, with the curvature of the arc-shaped pressure plate being the same as that of the main body of the frame.

[0015] Furthermore, it also includes a collection hopper; a through groove is opened at the bottom of the working chamber, and a collection hopper is fixedly connected to the through groove; a box is detachably connected to the lower side of the collection hopper; the box is connected to a suction pipe that is connected to an external suction mechanism; a dustproof net is fixedly connected to the suction pipe.

[0016] The beneficial effects of the present invention are as follows: by moving the clamping plates back to back, the clamped connecting plate is straightened and made to fit tightly with the docking point of the frame body. By controlling the DD motor on the first mounting disc, the electric telescopic rod and the second mounting disc are driven to rotate. The second mounting disc drives the frame body to rotate through the fixed rod, adjusting its tilted part to a horizontal state, so that the arc welding machine can weld various parts of the frame body.

[0017] The bending of the connecting plate is straightened by moving the pressure rod, and the frame body is aligned with the straightened connecting plate by the fixing rod. This pre-alignment of the frame body and the connecting plate improves the accuracy of the alignment and welding of the frame body and the connecting plate.

[0018] By using an arc-shaped pressure plate fixed to the upper pressure rod on mounting disc two, and an arc-shaped pressure plate fixed to the lower pressure rod on mounting disc one, with the curvature of the arc-shaped pressure plate being the same as that of the main body of the frame, the connecting plate is bent into the same shape as the main body of the frame, ensuring precise alignment between the connecting plate and the main body of the frame, and improving the overall welding accuracy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the welding device for electric vehicle frame production disclosed in this invention; Figure 2 This is a schematic diagram of the internal structure of the working chamber disclosed in this invention; Figure 3 This is a schematic diagram of the structure of the mounting frame, electric push rod 1, arc welding machine, mounting block and arc electric gripper assembly disclosed in this invention; Figure 4 This is a cross-sectional view of the mounting block disclosed in this invention; Figure 5 This is a state diagram of the arc-shaped electric gripper and the clamping plate used to clamp the main body and connecting plate of the vehicle frame disclosed in this invention. Figure 6 This is a schematic diagram of the structure of mounting disc one, mounting disc two, pressure rod and arc-shaped pressure plate disclosed in this invention; Figure 7 This is a cross-sectional view of the fixing rod disclosed in this invention; Figure 8 This is a schematic diagram of the structure of the collection hopper, box, suction pipe and dustproof net disclosed in this invention.

[0020] Reference numerals: 1-Working chamber, 2-Mounting frame, 3-Electric push rod one, 4-Arc welding machine, 20-Mounting block, 21-Arc-shaped electric gripper, 22-Electric push rod two, 23-Extrusion plate, 24-Clamping plate, 25-Electromagnet, 26-Roller, 101-Guide rail one, 102-Moving block one, 103-Guide rail two, 104-Moving block two, 105-Moving block three, 111-Mechanical arm, 112-Mounting disc one, 113-DD motor, 114-Electric telescopic rod, 115-Mounting disc two, 121-Electric slider, 122-Fixing rod, 123-Pressing rod, 131-Positioning block, 301-Collection hopper, 302-Box body, 303-Suction pipe, 304-Dustproof net, 12301-Arc-shaped pressure plate, 100-Chassis body, 200-Connecting plate. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings.

[0022] Example 1: A welding apparatus for electric vehicle frame production, referring to... Figures 1-7 As shown, it includes a work compartment 1; It also includes a mounting disc 112, a mounting disc 215, fixing rods 122, a pressing rod 123, a drive unit, and a welding unit; a drive unit is connected to the front and rear sides of the working chamber 1; the drive unit is connected to the mounting disc 112 and is used to move the mounting disc 112; the mounting disc 112 is connected to a rotatable mounting disc 215, and the distance between the mounting disc 215 and the mounting disc 112 is adjustable; the mounting disc 112 and the mounting disc 215 are each connected to two fixing rods 122, and the distance between the two fixing rods 122 on the mounting disc 112 and the distance between the two fixing rods 122 on the mounting disc 215 is adjustable; each fixing rod 122 is rotatably connected to a pressing rod 123; the drive unit is connected to the welding unit.

[0023] The drive unit includes a guide rail 101, a moving block 102, a guide rail 2 103, a moving block 2 104, a moving block 3 105, and a robotic arm 111. Two guide rails 101 are fixedly connected to the front and rear sides of the work chamber 1. Each guide rail 101 is slidably connected to a moving block 102. The two moving blocks 102 on the same side are fixedly connected to a guide rail 2 103. The moving block 2 103 is slidably connected to the moving block 2 104. The moving block 3 103 located on the rear side is slidably connected to the moving block 3 105. The robotic arm 111 is mounted on the moving block 3 105, and the mounting disk 112 is fixedly connected to the free end of the robotic arm 111.

[0024] It also includes a DD motor 113, an electric telescopic rod 114, and an electric slider 121; the DD motor 113 is fixedly connected to the mounting disc 112; the output part of the DD motor 113 is fixedly connected to a mounting ring, and two electric telescopic rods 114 are fixedly connected to the mounting ring, and the mounting disc 115 is fixedly connected to the telescopic part of the electric telescopic rod 114; both the mounting disc 112 and the mounting disc 115 have a slide rail, and each slide rail is slidably connected to two electric sliders 121, and the fixing rod 122 is fixedly connected to the electric sliders 121.

[0025] The welding unit includes a mounting frame 2, an electric push rod 3, an arc welding machine 4, a mounting block 20, an arc electric gripper 21, a clamping plate 24, and an electromagnet 25. Each moving block 204 is connected to two electric push rods 3. The telescopic parts of the two electric push rods 3 on the same side are fixedly connected to a mounting frame 2. Each mounting frame 2 is fixedly connected to two mounting blocks 20. Each mounting block 20 is equipped with a pair of arc electric grippers 21. Each mounting frame 2 is equipped with an arc welding machine 4, and the arc welding machine 4 is located between the two pairs of arc electric grippers 21. Each end of each arc electric gripper 21 is fixedly connected to a clamping plate 24. On the same pair of arc electric grippers 21, the clamping plate 24 on the upper side is fixedly connected to an electromagnet 25.

[0026] It also includes an electric push rod 22 and a pressing plate 23; the mounting block 20 is fixedly connected to the electric push rod 22; the extension part of the electric push rod 22 is fixedly connected to the pressing plate 23, and the pressing plate 23 is located between the two arc-shaped electric grippers 21.

[0027] It also includes rollers 26; the extrusion plate 23 is rotatably connected to four rollers 26.

[0028] It also includes positioning blocks 131; each of the two ends of each fixing rod 122 is fixed with two positioning blocks 131.

[0029] The inner surface of the arc-shaped electric gripper 21 is roughened to improve the clamping stability of the frame body 100.

[0030] The extrusion plate 23 is set in a V shape to improve the stability of clamping the frame body 100.

[0031] An arc-shaped pressure plate 123 is fixedly connected to the lower pressure rod 123 on the mounting disc 112. An arc-shaped pressure plate 12301 is fixedly connected to the upper pressure rod 123 on the mounting disc 115. The curvature of the arc-shaped pressure plate 12301 is the same as that of the curved part of the frame body 100. This allows the connecting plate 200 to be bent into a curved structure consistent with the frame body 100, thereby improving the overall welding accuracy.

[0032] First, the frame body 100 is placed between the two fixing rods 122 on mounting disc one 112 and between the two fixing rods 122 on mounting disc two 115, either manually or using an external robotic arm. Then, the electric slider 121 drives the two pairs of fixing rods 122 to move towards each other, clamping and fixing the placed frame body 100. Before fixing the frame body 100, the connecting plate 200 must be passed from right to left between the two fixing rods 122 on mounting disc one 112 and between the two fixing rods 122 on mounting disc two 115, either manually or using a robotic arm. Then, the fixing rods 122 are controlled to move towards each other, using the downward pressure rods 123 on them to clamp and fix the connecting plate 200. Figure 2 As shown, subsequently, the control blocks 102 and 104 cooperate to move the electric push rod 3, mounting bracket 2, mounting block 20, and arc-shaped electric gripper 21, aligning the arc-shaped electric gripper 21 with the frame body 100. Then, the control electric push rod 3 pushes the mounting bracket 2 and its mounting block 20 and arc-shaped electric gripper 21 toward the frame body 100. When they reach the appropriate position, the control arc-shaped electric gripper 21 opens, placing the frame body 100's members between its two grippers. Then, the control arc-shaped electric gripper 21 closes, clamping the front and rear ends of the connecting plate 200 via its clamping plate 24 at its end. Figure 5As shown, next, the electric push rod 3 is controlled to move the front and rear clamping plates 24 in opposite directions, straightening the clamped connecting plate 200 so that it aligns with the frame body 100. Simultaneously, the electric push rod 22 on the mounting block 20 is controlled to push the pressing plate 23 out and abut against the frame body 100, working in conjunction with the arc-shaped electric gripper 21 to fix the frame body 100, thereby improving the stability of the connection between the connecting plate 200 and the frame body 100. Then, the arc welding machine 4 is started to simultaneously weld the upper and lower ends of the connection between the connecting plate 200 and the frame body 100. During the welding process, the mounting block 20 and the arc-shaped... The electric gripper 21, the extrusion plate 23, and the clamping plate 24 move to the right to complete the welding of the entire connecting plate 200 to the frame body 100. When the arc welding machine 4 moves to the inclined part of the frame body 100, it drives the mounting ring, the electric telescopic rod 114 and the mounting disc 115 fixed to its output end to rotate as a whole by controlling the DD motor 113 on the mounting disc 112. Then, the mounting disc 115 drives the frame body 100 to rotate through the fixing rod 122, adjusting its inclined part to a horizontal state so that the arc welding machine 4 can weld various parts of the frame body 100.

[0033] Before welding, considering that the connecting plate 200 is thin and easily bent, and that the frame itself has an arc-shaped structure, it is difficult to accurately align the connecting plate 200 with the arc-shaped frame, which could easily lead to misalignment during welding. Therefore, after the arc-shaped electric gripper 21 and the clamping plate 24 clamp and align the frame body 100 and the connecting plate 200 (as shown in the image), Figure 5As shown), firstly, the two fixing rods 122 on the mounting disc 115 are controlled to release their clamping grip on the frame body 100. Then, through the cooperation of the DD motor 113 and the electric telescopic rod 114, the mounting disc 115 and its fixing rods 122 are driven to move as a whole to the right side of the arc-shaped electric gripper 21. Next, the two fixing rods 122 are controlled to re-clamp the frame body 100, and the downward pressure rod 123 on the fixing rods 122 is used to clamp the connecting plate 200. While the arc welding machine 4 moves to the right to perform welding, the electric telescopic rod 114 is controlled to drive the two fixing rods 122 on the mounting disc 115 to move to the right synchronously. During the movement, the downward pressure rod 123 clamps the bent parts on the connecting plate 200. The frame body 100 is straightened and, with the help of the fixing rod 122, the frame body 100 and the straightened connecting plate 200 are kept flush and aligned, achieving pre-alignment of the two before welding, thereby improving the accuracy of the alignment welding. In addition, when the pressure rod 123 passes through the curved part of the frame body 100, the curved pressure plate 12301 fixed to the pressure rod 123 above the mounting disc 2 115 and the curved pressure plate 12301 fixed to the pressure rod 123 below the mounting disc 1 112 have the same curvature as the curved part of the frame body 100, pressing the connecting plate 200 into the same shape as the curved part of the frame, ensuring that the connecting plate 200 and the frame body 100 can fit precisely at the curved part, further improving the overall welding accuracy.

[0034] When fixing the frame body 100, the positioning block 131 on the fixing rod 122 is used to accurately position and fix the position of the rod of the frame body 100, thereby ensuring that the position of the frame body 100 is accurately aligned.

[0035] Example 2: Based on Example 1, referring to... Figure 2 and Figure 8 As shown, it also includes a collection hopper 301, a housing 302, a suction pipe 303, and a dustproof net 304; a through groove is opened at the bottom of the working chamber 1, and the collection hopper 301 is fixedly connected to the through groove; the housing 302 is detachably connected to the lower side of the collection hopper 301; the housing 302 is connected to the suction pipe 303, and the suction pipe 303 is connected to an external suction mechanism; a dustproof net 304 is fixedly connected to the suction pipe 303, and the suction slag is filtered and intercepted by the dustproof net 304 to improve the collection effect of the welding slag.

[0036] Based on the above embodiment 1, considering that a lot of welding slag will be generated during the welding process, the working chamber 1 blocks the welding slag splashed on the inner wall during welding. At the same time, the external suction mechanism connected to the suction pipe 303 is activated to suck up the welding fumes in the working chamber 1 through the collection hopper 301, and the welding fumes generated during welding are removed. The weld slag that is sucked in is filtered and intercepted by the dustproof net 304 and collected into the box 302, thereby protecting the surrounding personnel.

[0037] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A welding apparatus for the production of electric vehicle frames, comprising a working chamber (1); characterized in that, It also includes a mounting disc one (112); a drive unit is connected to the front and rear sides of the work compartment (1); the drive unit is connected to the mounting disc one (112), and the drive unit is used to drive the mounting disc one (112) to move; the mounting disc one (112) is connected to a rotatable mounting disc two (115), and the distance between the mounting disc two (115) and the mounting disc one (112) is adjustable; the mounting disc one (112) and the mounting disc two (115) are each connected to two fixing rods (122) for clamping the frame body (100), and the distance between the two fixing rods (122) on the mounting disc one (112) is adjustable, and the distance between the two fixing rods (122) on the mounting disc two (115) is adjustable; each fixing rod (122) is rotatably connected to a pressing rod (123); the drive unit is connected to a welding unit for welding the frame body (100).

2. The welding apparatus for electric vehicle frame production according to claim 1, characterized in that, The drive unit includes a guide rail 1 (101), a moving block 1 (102), a guide rail 2 (103), a moving block 2 (104), a moving block 3 (105), and a robotic arm (111); two guide rails 1 (101) are fixedly connected to the front and rear sides of the work chamber (1); each guide rail 1 (101) is slidably connected to a moving block 1 (102); the two moving blocks 1 (102) on the same side are fixedly connected to a guide rail 2 (103); the guide rail 2 (103) is slidably connected to a moving block 2 (104); the guide rail 2 (103) located on the rear side is slidably connected to a moving block 3 (105); the moving block 3 (105) is equipped with a robotic arm (111), and the mounting disk 1 (112) is fixedly connected to the free end of the robotic arm (111).

3. The welding apparatus for electric vehicle frame production according to claim 2, characterized in that, The welding unit includes a mounting frame (2), an electric push rod (3), an arc welding machine (4), a mounting block (20), an arc electric gripper (21), a clamping plate (24), and an electromagnet (25); each moving block (104) is connected to two electric push rods (3); the telescopic parts of the two electric push rods (3) on the same side are fixed to a mounting frame (2); each mounting frame (2) is fixed to two mounting blocks (20); each mounting block (20) is equipped with a pair of arc electric grippers (21); each mounting frame (2) is equipped with an arc welding machine (4) located between the two pairs of arc electric grippers (21); each end of each arc electric gripper (21) is fixed to a clamping plate (24); on the same pair of arc electric grippers (21), the clamping plate (24) located on the upper side is fixed to an electromagnet (25).

4. The welding apparatus for electric vehicle frame production according to claim 3, characterized in that, It also includes an electric push rod two (22) and a pressing plate (23); the mounting block (20) is fixedly connected to the electric push rod two (22); the telescopic part of the electric push rod two (22) is fixedly connected to the pressing plate (23) located between the two arc-shaped electric grippers (21).

5. The welding apparatus for electric vehicle frame production according to claim 4, characterized in that, It also includes rollers (26); the extrusion plate (23) is rotatably connected to several rollers (26).

6. The welding apparatus for electric vehicle frame production according to claim 1, characterized in that, It also includes positioning blocks (131); two positioning blocks (131) are fixed at both ends of each fixing rod (122).

7. The welding apparatus for electric vehicle frame production according to claim 3, characterized in that, The inner surface of the arc-shaped electric gripper (21) is set as a rough surface.

8. A welding apparatus for electric vehicle frame production according to any one of claims 4-5, characterized in that, The extrusion plate (23) is set in a V shape.

9. A welding apparatus for electric vehicle frame production according to claim 1, characterized in that, An arc-shaped pressure plate (12301) is fixed to the lower pressure bar (123) on the first mounting disc (112), and an arc-shaped pressure plate (12301) is fixed to the upper pressure bar (123) on the second mounting disc (115), and the curvature of the arc-shaped pressure plate (12301) is the same as that of the curvature of the frame body (100).

10. A welding apparatus for electric vehicle frame production according to claim 1, characterized in that, It also includes a collection hopper (301); the bottom of the working chamber (1) has a through groove, and the collection hopper (301) is fixedly connected to the through groove; the box body (302) is connected to a suction pipe (303), which is used to connect to an external suction mechanism; a dustproof net (304) is fixedly connected to the suction pipe (303).

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