[0031] Example 2
[0032] Such as Figure 1 to Figure 9 As shown, a spot welding device for auto parts includes a support plate 1, a spot welding assembly, and a spot welding workbench. The spot welding assembly and the spot welding workbench are respectively arranged rearward and forward above the support plate 1, so The spot welding mechanism is used for spot welding of auto parts, and the inclination angle of two electrodes can be adjusted according to the shape characteristics of the auto parts to be spot welded. The spot welding workbench is used for the load-bearing during the spot welding of auto parts. The shape characteristics of the auto parts to be spot welded adjust the space distance between the spot welding table and the spot welding device.
[0033] In the present invention, the spot welding assembly includes a rectangular steel 2, an upper electrode 13 and a lower electrode 20. The rectangular steel 2 is vertically welded to the upper end surface of the support plate 1 in the center and back, and the upper part of the rectangular steel 2 is provided with There is a rotating shaft 3 facing forward and backward. The rotating shaft 3 penetrates through the rectangular steel 2 and is mounted on the rectangular steel 2 through a bearing seat 4. A circular turntable 5 is coaxially provided in front of the rotating shaft 3. The rotating shaft 3 and the turntable 5 are connected by a spline and are interference fit, a ring gear 6 is coaxially installed at the edge of the front end surface of the turntable 5, and a U-shaped mounting plate 7 is installed on the rectangular steel 2 above the turntable 5. , The center of the mounting plate 7 is threadedly mounted with a threaded rod 8 facing forward and backward, and a gear 9 is coaxially arranged behind the threaded rod 8, and a spline is provided between the threaded rod 8 and the gear 9 The gear 9 and the ring gear 6 mesh with each other. The front end of the threaded rod 8 is equipped with a handwheel 10, and the front end of the turntable 5 is mounted with a hinge support 11 , The hinge support 11 is hinged with an upper mounting rod 12 through a pin, the upper electrode 13 is vertically mounted on the overhanging end of the upper mounting rod 12 through a top wire, and the middle of the upper mounting rod 12 is fixedly mounted There is a sleeve 14, the lower side of the sleeve 14 is vertically welded with a connecting plate 141, the connecting plate 141 is provided with a vertical sliding groove 142, the center of the front end of the turntable 5 is installed with a U-shaped The mounting plate two 15 is mounted on the mounting plate two 15 is equipped with a forward telescopic cylinder 16, the piston rod of the telescopic cylinder 16 is mounted with a connecting block 17 which is connected to the connecting plate 141 by a pin The chute 142 is connected, a mounting seat 18 is installed on the front face of the loading plate 5, a lower mounting rod 19 is fixedly installed on the mounting seat 18, and the lower electrode 20 is installed vertically upward through a jack At the cantilever end of the rod 19, a transformer 21 is installed on the upper right end surface of the rectangular steel 2 and the transformer 21 is electrically connected to the upper electrode 13 and the lower electrode 20, respectively.
[0034] In the present invention, the spot welding workbench includes a slide rail 22, the slide rail 22 is evenly distributed and mounted on the upper end surface of the support plate 1, and the slide rail 22 is slidably mounted with a slider 23 , The upper end surface of the sliding block 23 is installed with a sliding plate 24, the left and right sides of the upper end surface of the sliding plate 24 are vertically installed with mounting plates three 25, and the upper ends of the two mounting plates 25 are mounted with mounting plates four. 26. A lifting plate 27 is provided directly above the mounting plate 29. A threaded rod 28 is threaded in the middle of the mounting plate 26. The top of the threaded rod 28 is mounted on the lifting plate through a bearing seat two 29. 27, the bottom end of the second threaded rod 28 is equipped with a second hand wheel 30, and the second threaded rod 28 is provided with guide posts 31 on all sides. A guide sleeve 32 is slidably mounted on the guide post 31. The top end of the guide post 31 is mounted on the lower end surface of the lifting plate 27 through the mounting seat 33, the guide sleeve 32 is fixed on the mounting plate 29, and the upper end surface of the lifting plate 27 is provided with mounting blocks 34 on the left and right sides. Two sliding rails 35 are uniformly installed between the mounting blocks 34, two sliding blocks 36 are slidably mounted on the second sliding rails 35, and a second sliding plate 37 is installed on the upper end surface of the second sliding blocks 36.
[0035] In the present invention, the rectangular steel 2 is provided with a solenoid valve 41 under the transformer 21. The solenoid valve 41 is connected to the telescopic cylinder 16 through a gas pipe, and the motion control of the telescopic cylinder 16 is realized through the solenoid valve 41. A foot switch 42 is provided in the front of the board 1. The foot switch 42 is electrically connected to the solenoid valve 41, and the action control of the solenoid valve 41 is realized through the foot switch 42. The foot switch 42 is provided with For the left pedal 421 and the right pedal 422, when the left pedal 421 is depressed, the piston rod of the telescopic cylinder 16 is extended, and when the right pedal 422 is depressed, the piston rod of the telescopic cylinder 16 contracts.
[0036] In the present invention, the slide rail 22 is a dovetail guide rail. The dovetail rail has the characteristics of good guiding performance, high guiding accuracy, and strong load capacity. The front and rear ends of the slide rail 22 are equipped with left and right barriers. 43. The stop bar 43 can prevent the sliding block 23 from sliding out of the sliding rail 22.
[0037] In the present invention, the sliding plate 24 is threadedly installed with a thumb screw 44 above the sliding rail 22, and the lower end surface of the thumb screw 44 is in contact with the upper end surface of the sliding rail 22. The thumb screw 44 can limit the freedom of movement of the sliding plate 24 and realize the relative fixation between the sliding plate 24 and the support plate 1.
[0038] In the present invention, quick clamps 38 are uniformly installed on the upper end surface of the two sliding plates 37, and the pressing end of the quick clamp 38 is provided with an indenter 381 made of rubber. With the help of the quick clamp 38, auto parts with regular shapes can be clamped to avoid the need for people to hold them all the time during welding and reduce the labor intensity of workers.
[0039] In the present invention, the lower end surface of the support plate 1 is uniformly welded with support blocks 39. The support blocks 39 can raise the height of the support plate 1 to avoid direct contact between the support plate 1 and the ground. The lower end surface of the support block 39 is welded There is a bottom plate 40, which can increase the contact area with the ground. The bottom surface of the bottom plate 40 is pasted with a damping friction pad, which can eliminate or weaken the vibration generated by the spot welding device during use.
[0040] The working principle and adjustment process of the spot welding device suitable for auto parts in the present invention:
[0041] Through the extension and contraction of the piston rod of the telescopic cylinder, the rise and fall of the connecting plate are realized, and then the upper mounting rod is driven to rise and fall around the hinge support, and then the upper electrode rises and falls. The two auto parts to be welded are placed on the second slide plate, and when the lower end surface of the auto parts underneath is in contact with the lower electrode, the piston rod of the telescopic cylinder is contracted and transmitted to drive the lower electrode and the upper electrode. When the upper surface of the auto parts is in contact with the upper electrode and the lower electrode, when a sufficiently large current is passed between the upper electrode and the lower electrode, a solder joint can be formed at the corresponding contact of the two auto parts. The inclination of the two electrodes can be adjusted by rotating the hand wheel 1 to adapt to the spot welding operation of different parts of irregular auto parts. By rotating the second hand wheel to adjust the level of the second slide plate, and by moving the slide plate one back and forth, it can adapt to the welding requirements of auto parts of different shapes and sizes. When welding regular auto parts, and the welding point is a straight line, you can first fix the two auto parts on the slide plate 2 through the quick clamp, spot welding through the gap of the spot welding device and intermittently sliding the slide plate 2 to one side. Spot welding operations on these two auto parts.
[0042] In summary, the spot welding device of the present invention is suitable for auto parts: first by placing or fixing the two auto parts to be spot welded on the second slide plate, and then by the contraction of the piston rod of the telescopic cylinder and transmission, The lower electrode is driven to contact the upper surface of the auto parts located above, and when a sufficiently large current is passed between the upper electrode and the lower electrode, a welding spot can be formed at the corresponding contact of the two auto parts. The inclination of the two electrodes can be adjusted by rotating the hand wheel 1 to adapt to the spot welding operation of different parts of irregular auto parts. By rotating the second hand wheel to adjust the level of the second slide plate, and by moving the slide plate one back and forth, it can adapt to the welding requirements of auto parts of different shapes and sizes. The spot welding device for auto parts in the present invention has the characteristics of simple structure, convenient adjustment, good adaptability and good practicability.
