An electric vehicle frame welding apparatus and method

Abstract

This invention proposes an electric vehicle frame welding device and method to solve the problems of low welding efficiency and inconvenient welding fixtures in current electric vehicle frame welding. The electric vehicle frame welding device includes a first slide rail, a support block slidably mounted on the first slide rail, support plates on both sides of the support block, and a base frame conveying device, an inner frame conveying device, and an outer frame conveying device sequentially mounted on both sides along the conveying direction of the first slide rail. Electromagnets driven by first hydraulic cylinders are mounted on both sides of the support block. Lower welding devices for lower welding points on the support plates are mounted. A second slide rail is located above the first slide rail, and a moving block slidably mounted on the second slide rail. Upper welding devices for upper and middle welding points on the moving block are mounted on the moving block. This invention improves the efficiency of frame welding and facilitates fixture fixation of the frame.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle frame manufacturing technology, and in particular to an electric vehicle frame welding device and method. Background Technology

[0002] Currently, electric vehicles generally consist of three main parts: the chassis and the left and outer side frames. These three parts need to be welded together to form the vehicle frame. Currently, the side frames are usually transported to the chassis, and then the left and outer side frames are welded one by one. This process is mostly done manually, with low automation, which affects production efficiency. At the same time, the work stations are relatively scattered, and transportation and welding are carried out separately. The entire process occupies a large area, and the transportation process takes a long time. The labor and site costs are high, which further restricts production efficiency and benefits. Currently, the chassis is usually locked with multiple limit bolts, buckles, and blocks, which is complex in structure. It requires repeated disassembly during loading and unloading, which is cumbersome and inconvenient to use. Summary of the Invention

[0003] This invention proposes an electric vehicle frame welding device and method, which solves the problems of low welding efficiency and inconvenient use of welding fixtures in current electric vehicle frame welding.

[0004] The technical solution of this invention is implemented as follows:

[0005] An electric vehicle frame welding device includes a first slide rail, a support block slidably mounted on the first slide rail, support plates on both sides of the support block, a base frame conveying device, an inner frame conveying device, and an outer frame conveying device sequentially mounted on both sides along the conveying direction of the first slide rail, electromagnets driven by a first hydraulic cylinder on both sides of the support block, a lower welding device for the lower welding point of the workpiece mounted on the support plate, a second slide rail above the first slide rail, a moving block slidably mounted on the second slide rail, and an upper welding device for the upper and middle welding points of the workpiece mounted on the moving block.

[0006] The lower welding device includes several welding grooves on a support plate. A limiting device driven by a second hydraulic cylinder is provided in the middle of the welding groove. A ring-shaped third slide rail is provided below the support plate. A first slider is slidably mounted on the third slide rail. A first welding head driven by a third hydraulic cylinder is mounted on the first slider. The welding groove is used for the first welding head to pass through.

[0007] The upper welding device includes a welding machine mounted on a moving block. A limiting frame is provided at the lower end of the moving block. A guide rod is slidably mounted inside the limiting frame. A second slider is symmetrically mounted on the guide rod. A second welding head driven by a fourth hydraulic cylinder is provided at the lower end of the second slider.

[0008] The limiting device includes a limiting tube with an air groove inside. The fixed end of the air groove is connected to an air pipe. Several through holes communicating with the air groove are staggered on the side wall of the limiting tube. A limiting rod is slidably installed in the through holes. One end of the limiting rod is connected to the inner side wall of the air groove by a spring, and the other end passes through the inner wall of the limiting tube and is connected to a suction cup. The limiting rod is pneumatically driven to slide, thereby suctioning the inner wall of the base frame steel pipe, realizing the rapid fixation of the base frame. The structure is simple, time-saving, labor-saving, and convenient to use.

[0009] The base frame conveying device includes a fourth slide rail, on which a conveying plate slides, and on which a transverse groove is provided. A third slider slides symmetrically within the groove, and on which a clamping plate driven by a fifth hydraulic cylinder is provided.

[0010] The inner frame conveying device and the outer frame conveying device both include symmetrically arranged slides, a fourth slider is slidably mounted on the slide, and a ring clamp driven by a sixth hydraulic cylinder is mounted on the fourth slider.

[0011] One method of using an electric vehicle frame welding device includes the following steps:

[0012] (1) The base frame is transported to the support plate by the base frame conveying device, and then fixed in a limited position;

[0013] (2) Move the support block to the inner frame conveying device, and use the inner frame conveying device in conjunction with the electromagnet driven by the first hydraulic cylinder to place the inner frame on the bottom frame, and weld it through the lower welding device and the upper welding device.

[0014] (3) Move the support block to the outer frame conveying device. The outer frame is placed on the bottom frame by the cooperation of the outer frame conveying device and the electromagnet driven by the first hydraulic cylinder. The welding is completed by the lower welding device and the upper welding device.

[0015] Beneficial effects

[0016] This invention automates the transport, alignment, and welding of vehicle frames by incorporating conveying and welding devices, forming an automated production line with a high degree of integration. This reduces manual labor, improves production efficiency, and minimizes the equipment's footprint. By symmetrically arranging movable support plates with lower welding devices on these plates, and simultaneously cooperating with upper, movable welding devices, welding is performed on each weld point during the transport of each frame. This allows the transport and welding processes to proceed synchronously, enabling the welding of two frames at the same time. This saves time required for frame transfer, further improving production efficiency and ultimately enhancing production benefits. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a top view of the present invention;

[0019] Figure 2 This is a front view schematic diagram of the present invention;

[0020] Figure 3 This is a side view of the support plate of the present invention;

[0021] Figure 4 This is a front view of the inner frame conveying device of the present invention;

[0022] Figure 5 This is a top view of the underframe conveyor system;

[0023] Figure 6 This is a schematic diagram of the limiting device;

[0024] Figure 7 This is a bottom view of the limit frame. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1

[0027] like Figure 1 As shown, an electric vehicle frame welding device includes a first slide rail 1, a load-bearing block 21 slidably mounted on the first slide rail 1, a support block 2 mounted on the load-bearing block 21, support plates 3 mounted on both sides of the support block 2, a base frame conveying device 9, an inner frame conveying device 10, and an outer frame conveying device 11 sequentially mounted on both sides along the conveying direction of the first slide rail 1, electromagnets 5 driven by a first hydraulic cylinder 4 mounted on both sides of the support block 2, a lower welding device for the lower welding point of the workpiece mounted on the support plate 3, a second slide rail 27 mounted above the first slide rail 1, a moving block 29 slidably mounted on the second slide rail 27, and an upper welding device for the upper and middle welding points of the workpiece mounted on the moving block 29.

[0028] The working process of this embodiment is as follows: First, the base frame is brought close to the support plate 3 by the base frame conveying device 9. Then, the first hydraulic cylinder 4 is extended to drive the electromagnet 5 to move. At the same time, the electromagnet 5 is activated to attract and fix the base frame. Then, the first hydraulic cylinder 4 is retracted to move the base frame to the support plate 3. Then, the load-bearing block 21 is controlled to slide to the inner frame conveying device 10. The inner frame is close to the support plate 3. Then, the left side frame is moved to a suitable position by moving the electromagnet 5. Then, welding is performed by the upper and lower welding devices. Then, the load-bearing block 21 is moved again, and the above steps are repeated to weld the outer frame. The welding is completed.

[0029] Example 2

[0030] Preferably, the lower welding device includes several welding grooves 6 on the support plate 3. A limiting device driven by a second hydraulic cylinder 8 is provided in the middle of each welding groove 6. The second hydraulic cylinder 8 is mounted on a top rod 23. A ring-shaped third slide rail 26 is provided below the support plate 3. Two third slide rails 26 are connected. One side of the third slide rail 26 is connected to the side plate of the support plate 3, and the other side of the third slide rail 26 is fixed to the support block 2. A first slider 25 slides on the third slide rail 26. A first welding head 22 driven by a third hydraulic cylinder 24 is provided on the first slider 25. The welding grooves 6 are for the first welding head 22 to pass through. In this embodiment, the lower welding point is ring-shaped, and the third hydraulic cylinder extends... 24. The welding head is driven through the welding groove 6, and then the welding head is started. At the same time, the first slider 25 is moved to weld the welding point of the replacement. The limiting device includes a limiting tube 7, which has an air groove 33. The fixed end of the air groove 33 is connected to an air pipe 37. Several through holes communicating with the air groove 33 are staggered on the side wall of the limiting tube 7. A limiting rod 34 is slidably installed in the through hole. One end of the limiting rod 34 is connected to the inner side wall of the air groove 33 by a spring 35. The other end passes through the inner wall of the limiting tube 7 and is connected to a suction cup 36. The limiting rod 34 is pneumatically driven to slide, thereby suctioning the inner wall of the base frame steel pipe, realizing the rapid fixation of the base frame. The structure is simple, time-saving, labor-saving and convenient. For ease of use; the upper welding device includes a welding machine 28 mounted on a movable block 29. A limiting frame 30 is provided at the lower end of the movable block 29. A guide rod 38 is slidably mounted within the limiting frame 30. A second slider 31 is symmetrically slidably mounted on the guide rod 38. A second welding head driven by a fourth hydraulic cylinder 32 is located at the lower end of the second slider 31. In this embodiment, the upper welding point is strip-shaped. By moving the limiting frame 30 and the load-bearing block 21 simultaneously via the movable block 29, simultaneous transport and welding are achieved. During welding, the position of the second welding head is adjusted via the guide rod 38 and the second slider 31, and then the guide rod 38 is moved to weld the welding point. The base frame conveying device 9 includes a fourth slide rail. A conveyor plate 16 is provided on the upper side, and a transverse groove 17 is provided on the conveyor plate 16. A third slider 18 is symmetrically slidably arranged in the groove 17. A clamping plate 19 driven by a fifth hydraulic cylinder 20 is provided on the third slider 18. The base frame is clamped by the clamping plate 19, and then the conveyor plate 16 is slidably conveyed to the base frame. The inner side frame conveying device 10 and the outer side frame conveying device 11 both include a slide rail 12 symmetrically arranged on the upper and lower sides. A fourth slider 13 is slidably arranged on the slide rail 12. A ring clamp 15 driven by a sixth hydraulic cylinder 14 is provided on the fourth slider 13. When conveying the side frame, the electromagnet 5 is first activated to attract the side frame, and then the sixth hydraulic cylinder 14 is contracted to release the ring clamp 15 from the side frame.

[0031] The other structures in this embodiment are the same as in Embodiment 1.

[0032] Example 3

[0033] Preferably, a method of using an electric vehicle frame welding device includes the following steps:

[0034] The base frame is transported to the support plate 3 by the base frame conveying device 9, and then fixed in a limited position;

[0035] Move the support block 2 to the inner frame conveying device 10. The inner frame is placed on the bottom frame by the cooperation of the inner frame conveying device 10 and the electromagnet 5 driven by the first hydraulic cylinder. The inner frame is then welded by the lower welding device and the upper welding device.

[0036] The moving support block 2 is moved to the outer frame conveying device 11. The outer frame is placed on the bottom frame by the cooperation of the outer frame conveying device 11 with the electromagnet 5 driven by the first hydraulic cylinder 4. The welding is completed by the lower welding device and the upper welding device.

[0037] The other structures in this embodiment are the same as in Embodiment 1.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electric vehicle frame welding device comprising a first slide rail (1), characterized in that: The first slide rail (1) is provided with a support block (2) sliding thereon, both sides of the support block (2) are provided with support plates (3), and the bottom frame conveying device (9), the inner side frame conveying device (10) and the outer side frame conveying device (11) are sequentially arranged on both sides of the first slide rail (1) in the conveying direction; both sides of the support block (2) are provided with electromagnets (5) driven by the first hydraulic cylinders (4), the bottom frame conveying device (9) moves the bottom frame to the support plates (3), then the first hydraulic cylinders (4) are extended to drive the electromagnets (5) to move, and the electromagnets (5) are started to adsorb and fix the bottom frame, then the first hydraulic cylinders (4) are retracted to drive the bottom frame to move to the support plates (3); The inner side frame conveying device (10) and the first hydraulic cylinders (4) driven electromagnets (5) cooperate to place the inner side frame on the bottom frame; the outer side frame conveying device (11) and the first hydraulic cylinders (4) driven electromagnets (5) cooperate to place the outer side frame on the bottom frame; The support plates (3) are provided with lower welding devices for lower welding points of the workpiece, the upper side of the first slide rail (1) is provided with a second slide rail (27), the second slide rail (27) is provided with a moving block (29) sliding thereon, and the moving block (29) is provided with upper welding devices for upper and middle welding points of the workpiece; The lower welding device comprises a plurality of welding grooves (6) arranged on the support plates (3), the middle of the welding grooves (6) is provided with a limiting device driven by the second hydraulic cylinders (8), the limiting device is used for quickly fixing the bottom frame, the lower side of the support plates (3) is provided with a ring-shaped third slide rail (26), the third slide rail (26) is provided with a first sliding block (25) sliding thereon, the first sliding block (25) is provided with a first welding head (22) driven by the third hydraulic cylinders (24), and the welding grooves (6) are used for the first welding head (22) to pass through; The upper welding device comprises a welding machine (28) arranged on the moving block (29), the lower end of the moving block (29) is provided with a limiting frame (30), a guide rod (38) is slidingly arranged in the limiting frame (30), a second sliding block (31) is symmetrically slidingly arranged on the guide rod (38), and the lower end of the second sliding block (31) is provided with a second welding head driven by the fourth hydraulic cylinders (32); the bottom frame conveying device (9) comprises a fourth slide rail, the fourth slide rail is provided with a conveying plate (16) sliding thereon, the conveying plate (16) is provided with a transverse sliding groove (17), the sliding groove (17) is symmetrically provided with a third sliding block (18) sliding therein, and the third sliding block (18) is provided with a clamping plate (19) driven by the fifth hydraulic cylinders (20); The inner side frame conveying device (10) and the outer side frame conveying device (11) each comprise slide rails (12) arranged symmetrically upward and downward, the slide rails (12) are provided with fourth sliding blocks (13) sliding thereon, and the fourth sliding blocks (13) are provided with ring-shaped clamps (15) driven by the sixth hydraulic cylinders (14).

2. The electric vehicle frame welding apparatus of claim 1, wherein: The limiting device comprises a limiting pipe (7), the limiting pipe (7) is internally provided with an air groove (33), the fixed end of the air groove (33) is communicated with an air pipe (37), a plurality of through holes communicated with the air groove (33) are staggered arranged on the side wall of the limiting pipe (7), a limiting rod (34) is slidably arranged in the through hole, one end of the limiting rod (34) is connected with the inner side wall of the air groove (33) through a spring (35), and the other end of the limiting rod (34) is connected with a sucking disc (36) penetrating through the inner wall of the limiting pipe (7).

3. A method of using the electric vehicle frame welding apparatus of any one of claims 1-2, wherein, The method comprises the following steps: (1) the bottom frame is conveyed to the support plate (3) through the bottom frame conveying device (9), and then is fixedly limited; (2) the support block (2) is moved to the inner side frame conveying device (10), the inner side frame is placed on the bottom frame through the cooperation of the inner side frame conveying device (10) and the electromagnet (5) driven by the first hydraulic cylinder (4), and is welded through the lower welding device and the upper welding device; (3) the support block (2) is moved to the outer side frame conveying device (11), the outer side frame is placed on the bottom frame through the cooperation of the outer side frame conveying device (11) and the electromagnet (5) driven by the first hydraulic cylinder (4), and is welded through the lower welding device and the upper welding device, and the welding is completed.

Images