Upper plate spot welding machine

Abstract

The utility model discloses an upper plate spot welding machine, which relates to the technical field of electric welding spot welding, and comprises an electric base station, a pneumatic plate turning mechanism, a seam pressing mechanism, an upper plate inner cavity positioning mechanism, a cavity plate outer side clamping mechanism, a cavity plate inner cavity positioning mechanism and two welding mechanisms, the two welding mechanisms are symmetrically arranged, the upper plate inner cavity positioning mechanisms are movably installed above the electric base table, the two upper plate inner cavity positioning mechanisms are symmetrically arranged and correspond to the welding mechanisms, and the pneumatic plate turnover mechanism is rotationally installed at the top of the electric base table. The cavity plate inner cavity positioning mechanisms are movably installed on the rear side of the electric base table, the two cavity plate inner cavity positioning mechanisms are symmetrically arranged, the cavity plate outer side clamping mechanisms are rotatably installed at the relative positions of the two cavity plate inner cavity positioning mechanisms, and the automatic spot welding machine achieves circulating production and is higher in automation degree, and the production efficiency and the spot welding quality are effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of electric welding and spot welding, and specifically relates to an upper plate spot welding machine. Background Technology

[0002] Spot welding is a welding method that uses a cylindrical electrode to form a weld point between the contact surfaces of two overlapping workpieces. During spot welding, pressure is first applied to bring the workpieces into close contact, then current is applied, and the contact area melts under resistance heating. After cooling, a weld point is formed. Spot welding is mainly used for welding thin sheet metal stampings with a thickness of less than 4mm, and is particularly suitable for welding automobile bodies and carriages, and aircraft fuselages.

[0003] Existing spot welding equipment has a simple structure and low level of automation, which does not meet the production requirements of continuous cycle production and results in low production efficiency.

[0004] Therefore, we propose a plate spot welding machine. Utility Model Content

[0005] This utility model provides a plate spot welding machine to solve the technical problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides an upper plate spot welding machine, including an electric base, a pneumatic flipping mechanism, a seam pressing mechanism, an upper plate inner cavity positioning mechanism, a cavity plate outer clamping mechanism, a cavity plate inner cavity positioning mechanism, and a welding mechanism. The welding mechanism is fixedly installed on both sides of the electric base, and two welding mechanisms are provided, symmetrically arranged. The upper plate inner cavity positioning mechanism is movably installed above the electric base, and two upper plate inner cavity positioning mechanisms are symmetrically arranged, corresponding to the welding mechanisms. The pneumatic flipping mechanism is rotatably installed on the top of the electric base. The cavity plate inner cavity positioning mechanism is movably installed on the rear side of the electric base, and two cavity plate inner cavity positioning mechanisms are symmetrically arranged. The cavity plate outer clamping mechanism is rotatably installed on the two cavity plate inner cavity positioning mechanisms relative to each other.

[0007] Preferably, the cavity positioning mechanism includes a frame, with the frame movably mounted above the electric base. Two frames are symmetrically arranged, and a clamping plate is fixedly mounted on the two frames at opposite positions. A welding head is fixedly mounted on the inner side of the clamping plate, and the welding head is electrically connected to an external power source.

[0008] Preferably, the clamping mechanism on the outer side of the cavity plate includes a rotating seat, which is rotatably mounted on the top of the frame, and a chuck is fixedly mounted on the other side of the rotating seat. A pneumatic rod is provided between the chuck and the frame.

[0009] Preferably, the upper plate inner cavity positioning mechanism includes a connecting shaft, the connecting shaft is movably installed above the electric base, two connecting shafts are symmetrically arranged, the two connecting shafts are fixedly installed with clamping plates two at relative positions, and a gas rod two is provided on the rear side of the clamping plates two.

[0010] Preferably, the welding mechanism includes a cabin, the cabin is fixedly installed above the electric base, a pneumatic rod three is fixedly installed inside the cabin, a mounting seat is fixedly provided at the output end of the pneumatic rod three, multiple mounting seats are provided, the multiple mounting seats are arranged at equal intervals, and a welding head two is fixedly installed on the outside of the mounting seat.

[0011] Preferably, the seam pressing mechanism includes a pressure rod, which is fixedly installed inside the cabin. Multiple pressure rods are provided and are arranged at equal intervals. The output end of the pressure rod is fixedly installed with a pressure rod.

[0012] Preferably, the pneumatic flip-plate mechanism includes a rotating base two, the rotating base two is fixedly installed on the top of the electric base, the flip-plate body is rotatably installed on the outer side of the rotating base two, the electrode is movably installed on the inner side of the flip-plate body, the air rod four is fixedly installed on the inner side of the flip-plate body, the output end of the air rod four is fixedly connected to the electrode, and the air rod five is rotatably installed on the bottom of the flip-plate body.

[0013] This invention has the following advantages over the prior art:

[0014] This utility model discloses a plate spot welding machine. The cavity positioning mechanism uses a pneumatic tensioning system to position and spot weld the cavity on the left and right sides. The rear inner positioning is driven by a cylinder for front and rear tensioning. An outer clamping mechanism, in conjunction with the inner positioning, clamps and positions the cavity plate. An outer cavity plate pressure rod presses the product into an inward V-shape. A pneumatic flipping mechanism pre-positions the upper plate, flipping the plate body to cooperate with the upper plate inner cavity positioning mechanism to press and position the upper plate. The outer cavity plate returns to its original position, supporting the electrodes and ensuring the product's inner cavity is flat. The pressure plate presses the weld seam, completing the positioning of the entire cavity. After positioning, four welding heads on each side of the weld seam extend simultaneously to perform rapid discharge welding on both sides of the cavity. After welding is completed, the welding mechanism retracts, the outer clamping mechanism of the cavity plate releases, the pneumatic flipping mechanism opens, the cavity positioning mechanism retracts to its original position, and the upper plate inner cavity positioning mechanism returns to its original position. A robotic arm removes the product, and the process is repeated cyclically, resulting in higher automation and effectively improving production efficiency and spot welding quality. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a plate spot welding machine according to the present invention;

[0016] Figure 2 This is a structural diagram of the cavity positioning mechanism of the upper plate spot welding machine according to the present invention;

[0017] Figure 3This is a structural diagram of the clamping mechanism on the outer side of the cavity plate of the upper plate spot welding machine according to the present invention;

[0018] Figure 4 This is a structural diagram of the upper plate inner cavity positioning mechanism in an upper plate spot welding machine according to the present invention;

[0019] Figure 5 This is a structural diagram of the machine compartment in an upper plate spot welding machine according to the present invention;

[0020] Figure 6 This is a structural diagram of a pneumatic flipping mechanism in a plate spot welding machine according to the present invention;

[0021] Numbered in the diagram: 1. Electric base; 2. Pneumatic flipping mechanism; 3. Seam pressing mechanism; 4. Upper plate inner cavity positioning mechanism; 5. Cavity plate outer clamping mechanism; 6. Cavity plate inner cavity positioning mechanism; 7. Welding mechanism; 8. Clamping plate one; 9. Welding head one; 10. Clamp; 11. Rotating seat one; 12. Pneumatic rod one; 13. Frame; 14. Clamping plate two; 15. Connecting shaft; 16. Pneumatic rod two; 17. Cabin; 18. Pneumatic rod three; 19. Mounting seat; 20. Welding head two; 21. Pressure plate; 22. Pressure rod; 23. Rotating seat two; 24. Flipping plate body; 25. Electrode; 26. Pneumatic rod four; 27. Pneumatic rod five. Detailed Implementation

[0022] Please see Figure 1-6 This utility model provides a technical solution: a plate spot welding machine, including an electric base 1, a pneumatic flipping mechanism 2, a seam pressing mechanism 3, an upper plate inner cavity positioning mechanism 4, a cavity plate outer clamping mechanism 5, a cavity plate inner cavity positioning mechanism 6, and a welding mechanism 7. The welding mechanism 7 is fixedly installed on both sides of the electric base 1. There are two welding mechanisms 7, which are symmetrically arranged. The upper plate inner cavity positioning mechanism 4 is movably installed on the top of the electric base 1. There are two upper plate inner cavity positioning mechanisms 4 symmetrically arranged, and the two upper plate inner cavity positioning mechanisms 4 correspond to the welding mechanism 7. The pneumatic flipping mechanism 2 is rotatably installed on the top of the electric base 1. The cavity plate inner cavity positioning mechanism 6 is movably installed on the rear side of the electric base 1. There are two cavity plate inner cavity positioning mechanisms 6 symmetrically arranged. The cavity plate outer clamping mechanism 5 is rotatably installed on the two cavity plate inner cavity positioning mechanisms 6 in relative positions.

[0023] Furthermore, the cavity positioning mechanism 6 includes a frame 13. The frame 13 is movably installed above the electric base 1. Two frames 13 are symmetrically arranged. The two frames 13 are fixedly installed with clamping plates 8 at relative positions. Welding heads 9 are fixedly installed on the inner side of the clamping plates 8. Welding heads 9 are electrically connected to an external power supply.

[0024] Furthermore, the outer clamping mechanism 5 of the cavity plate includes a rotating seat 11, which is rotatably mounted on the top of the frame 13. A chuck 10 is fixedly mounted on the other side of the rotating seat 11, and a pneumatic rod 12 is provided between the chuck 10 and the frame 13.

[0025] Furthermore, the upper plate inner cavity positioning mechanism 4 includes a connecting shaft 15. The connecting shaft 15 is movably installed above the electric base 1. Two connecting shafts 15 are symmetrically arranged. The two connecting shafts 15 are fixedly installed with clamping plates 14 in relative positions. A pneumatic rod 16 is provided on the rear side of the clamping plates 14.

[0026] Furthermore, the welding mechanism 7 includes a cabin 17, the cabin 17 is fixedly installed above the electric base 1, the air rod 18 is fixedly installed inside the cabin 17, the output end of the air rod 18 is fixedly provided with a mounting seat 19, there are multiple mounting seats 19, the multiple mounting seats 19 are arranged at equal intervals, and the welding head 20 is fixedly installed on the outside of the mounting seat 19.

[0027] Furthermore, the seam pressing mechanism 3 includes a pressure rod 22, which is fixedly installed inside the engine compartment 17. Multiple pressure rods 22 are provided and are arranged at equal intervals. The output end of the pressure rod 22 is fixedly installed with a pressure rod.

[0028] Furthermore, the pneumatic flap mechanism 2 includes a rotating seat 23, which is fixedly installed on the top of the electric base 1. The flap body 24 is rotatably installed on the outside of the rotating seat 23. The electrode 25 is movably installed on the inside of the flap body 24. The air rod 26 is fixedly installed on the inside of the flap body 24. The output end of the air rod 26 is fixedly connected to the electrode 25. The air rod 27 is rotatably installed on the bottom of the flap body 24.

[0029] Working principle:

[0030] The cavity positioning mechanism 6 uses a pneumatic mechanism for tensioning, and the left and right positioning spot welded cavities are positioned. The rear inner positioning is driven by a cylinder for front and rear tensioning. The outer clamping mechanism 5 of the cavity plate works with the inner positioning to position and clamp the cavity plate. The outer cavity plate pressure rod 22 presses the product into an inward shape. The pneumatic flipping mechanism 2 is pre-positioned on the upper plate. The flipping body 24 flips over and works with the upper plate inner cavity positioning mechanism 4 to press and position the upper plate. The outer cavity plate is pressed back to its original position, supporting the electrode 25 to ensure the product's inner cavity is flat. The pressure plate 21 presses the weld seam, completing the positioning of the entire cavity. After positioning, four welding heads 20 on each side of the weld seam extend simultaneously to perform rapid discharge welding on the weld seams on both sides of the cavity. After welding is completed, the welding mechanism 7 retracts, the outer clamping mechanism 5 of the cavity plate is released, the pneumatic flipping mechanism 2 opens, the cavity positioning mechanism 6 of the cavity plate retracts to its original position, and the upper plate inner cavity positioning mechanism 4 returns to its original position. The robot arm removes the product, and the production cycle is repeated. This process has a higher degree of automation and effectively improves production efficiency and spot welding quality.

Claims

1. A plate spot welding machine, comprising an electric base (1), a pneumatic flipping mechanism (2), a seam pressing mechanism (3), a plate inner cavity positioning mechanism (4), a cavity plate outer clamping mechanism (5), a cavity plate inner cavity positioning mechanism (6), and a welding mechanism (7), characterized in that: Welding mechanisms (7) are fixedly installed on both sides of the electric base (1). There are two welding mechanisms (7) arranged symmetrically. An upper plate cavity positioning mechanism (4) is movably installed above the electric base (1). There are two upper plate cavity positioning mechanisms (4) arranged symmetrically. The two upper plate cavity positioning mechanisms (4) correspond to the welding mechanisms (7). A pneumatic flipping mechanism (2) is rotatably installed on the top of the electric base (1). A cavity plate cavity positioning mechanism (6) is movably installed on the rear side of the electric base (1). There are two cavity plate cavity positioning mechanisms (6) arranged symmetrically. A cavity plate outer clamping mechanism (5) is rotatably installed on the two cavity plate cavity positioning mechanisms (6) in relative positions.

2. The upper plate spot welding machine according to claim 1, characterized in that, The cavity positioning mechanism (6) includes a frame (13). The frame (13) is movably installed above the electric base (1). Two frames (13) are symmetrically arranged. The two frames (13) are fixedly installed with clamping plates (8) at opposite positions. Welding head (9) is fixedly installed inside the clamping plate (8). Welding head (9) is electrically connected to an external power supply.

3. The upper plate spot welding machine according to claim 2, characterized in that, The outer clamping mechanism (5) of the cavity plate includes a rotating seat (11), which is rotatably mounted on the top of the frame (13). A chuck (10) is fixedly mounted on the other side of the rotating seat (11), and a pneumatic rod (12) is provided between the chuck (10) and the frame (13).

4. The upper plate spot welding machine according to claim 1, characterized in that, The upper plate inner cavity positioning mechanism (4) includes a connecting shaft (15). The connecting shaft (15) is movably installed above the electric base (1). Two connecting shafts (15) are symmetrically arranged. The two connecting shafts (15) are fixedly installed with clamping plates (14) at opposite positions. A gas rod (16) is provided on the rear side of the clamping plates (14).

5. The upper plate spot welding machine according to claim 1, characterized in that, The welding mechanism (7) includes a cabin (17), the cabin (17) is fixedly installed above the electric base (1), the air rod three (18) is fixedly installed inside the cabin (17), the output end of the air rod three (18) is fixedly provided with a mounting seat (19), there are multiple mounting seats (19), the multiple mounting seats (19) are arranged at equal intervals, and the welding head two (20) is fixedly installed on the outside of the mounting seat (19).

6. A spot welding machine for upper plates according to claim 5, characterized in that, The seam pressing mechanism (3) includes a pressure rod (22). The pressure rod (22) is fixedly installed inside the cabin (17). There are multiple pressure rods (22), which are arranged at equal intervals. The output end of the pressure rod (22) is fixedly installed with a pressure plate (21).

7. The upper plate spot welding machine according to claim 1, characterized in that, The pneumatic flap mechanism (2) includes a rotating seat two (23), the rotating seat two (23) is fixedly installed on the top of the electric base (1), the flap body (24) is rotatably installed on the outside of the rotating seat two (23), the electrode (25) is movably installed on the inside of the flap body (24), the air rod four (26) is fixedly installed on the inside of the flap body (24), the output end of the air rod four (26) is fixedly connected to the electrode (25), and the air rod five (27) is rotatably installed on the bottom of the flap body (24).

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