Double-roller welding machine

Abstract

The utility model discloses a double-roller welding machine in the technical field of roller welding machines, which comprises a square tube base, one side of the upper end of the square tube base is fixedly connected with a rack, the other side of the upper end of the square tube base is fixedly connected with a guide rod support, two sides of the upper end of the guide rod support are fixedly connected with guide rod supports, and the outer sides of the guide rod supports are fixedly connected with connecting plate seats. Sliding bottom plates are arranged at the two ends of the connecting plate base in a sliding mode, one sides of the sliding bottom plates are fixedly connected with plug screws, the lower end of the guide rod support is connected with an upper die device, the upper end of the rack is fixedly connected with a moving device, and one side of the upper end of the moving device is fixedly connected with a lower die rotating device; the other side of the upper end of the moving device is fixedly connected with a transposition motor, and the transposition motor is in transmission connection with the lower die rotating device through a belt. By means of the arrangement, products can be conveniently taken and placed, the products can be rapidly moved to the welding position, welding of a plurality of welding beads can be automatically completed through one-time starting, and compared with traditional starting and stopping manual transposition, the welding efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of roller welding machines, specifically relating to a double roller welding machine. Background Technology

[0002] A roll welding machine is a machine used for roll welding. Roll welding, also known as circumferential seam welding, uses a pair of roller electrodes instead of the cylindrical electrodes used in spot welding. The workpiece moves between the rollers, creating overlapping weld nuggets that seal the workpiece together. It typically uses AC pulse current or amplitude-modulated current, but can also use three-phase (single-phase) rectified, medium-frequency, or high-frequency DC current. Roll welding is widely used for welding thin plates in sealed containers such as oil drums, cans, radiators, aircraft and automobile fuel tanks, rockets, and missiles. The typical welding thickness is within 3mm for a single plate.

[0003] Currently available roller welding machines can only complete single-sided welding in a single start-stop cycle. When a single part requires multi-sided processing, such as welding a circular pipe, multiple start-stop cycles are required for manual rotation welding, which easily wastes a lot of processing time, resulting in low efficiency and certain limitations. Utility Model Content

[0004] The purpose of this invention is to provide a double roller welding machine to solve the problem mentioned in the background art that existing roller welding machines can only perform single welding, which affects processing efficiency. This invention adopts a movable and rotatable lower mold, which facilitates the loading and unloading of products. At the same time, it can automatically rotate to perform multiple weld passes without having to start and stop the workpiece multiple times, thus improving welding efficiency. Compared with traditional manual adjustment of the welding surface, this device has significant advantages.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double roller welding machine, comprising a square tube base, a frame fixedly connected to one side of the upper end of the square tube base, a guide rod bracket fixedly connected to the other side of the upper end of the square tube base, guide rod supports fixedly connected to both sides of the upper end of the guide rod bracket, a connecting plate seat fixedly connected to the outer side of the guide rod support, sliding base plates slidably disposed at both ends of the connecting plate seat, a plug screw fixedly connected to one side of the sliding base plate, adjusting handles rotatably connected to both ends of the guide rod support, the adjusting handles being threadedly engaged with the plug screws, a cylinder body fixedly connected to one end of the sliding base plates on both sides, an upper mold device fixedly connected to the lower end of the cylinder body, a moving device fixedly connected to the upper end of the frame, a lower mold rotating device fixedly connected to one side of the upper end of the moving device, a shifting motor fixedly connected to the other side of the upper end of the moving device, the shifting motor and the lower mold rotating device being connected by belt drive.

[0006] Preferably, the guide rod bracket includes a top plate, a guide rod, a photoelectric switch, and a fixing base plate. The guide rod is fixedly connected to the four corners of the lower end of the top plate, the photoelectric switch is fixedly connected to one side of the surface of the guide rod, and the fixing base plate is fixedly connected to the lower end of the guide rod.

[0007] Preferably, the upper mold device includes a seated bearing, a rotating rod, a welding roller, a fixed pressure plate, and a rotary joint. There are two seated bearings. The rotating rod is rotatably connected to the center of each seated bearing. A welding roller is sleeved on one end of the rotating rod. The welding roller is fixed by the fixed pressure plate. The other end of the rotating rod is fixedly connected to the rotary joint.

[0008] Preferably, the moving device includes a limiting rail, a translation base, a nut seat, a threaded support, a threaded rod, and a servo motor. The upper ends of the square tube base are fixedly connected to the limiting rails on both sides, and the translation base is slidably sleeved on the surface of the limiting rails.

[0009] Preferably, threaded supports are fixedly connected to both ends of the upper side of the square tube base, and a threaded rod is rotatably connected between the two threaded supports. One end of the threaded rod is fixedly connected to a servo motor via a shaft. The servo motor is fixedly connected to the upper end of the square tube base. A nut seat is fixedly connected to one side of the translation base, and the nut seat is threaded onto the outer surface of the threaded rod.

[0010] Preferably, the lower mold rotating device includes a lower mold body, a water-cooled mold, a rotating shaft, a through-hole synchronous wheel, a shaft locking device, and a rotating seat. The rotating shaft is rotatably connected to the center of the rotating seat. The shaft locking device is fixedly connected to the lower end of the rotating shaft. The through-hole synchronous wheel is fixedly connected to the upper end of the shaft locking device. The lower mold body is fixedly connected to the upper end of the rotating shaft. The water-cooled mold is fixedly installed at the lower end of the lower mold body.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model facilitates product handling and quick movement to the welding position, enabling automatic completion of welding of multiple weld passes with a single start-up. Compared to traditional manual start-up and stop methods, it improves welding efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the guide rod bracket of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the connecting plate base of this utility model;

[0016] Figure 4This is a schematic diagram of the upper mold device of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the mobile device of this utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the lower mold rotation device of this utility model.

[0019] In the diagram: 1. Square tube base; 2. Frame; 3. Guide rod bracket; 4. Moving device; 5. Lower mold rotating device; 6. Top plate; 7. Guide rod; 8. Photoelectric switch; 9. Fixed base plate; 10. Guide rod support; 11. Connecting plate seat; 12. Sliding base plate; 13. Adjusting handle; 14. Plug screw; 15. Cylinder body; 16. Upper mold device; 17. Bearing with seat; 18. Rotating rod; 19. Welding roller; 20. Fixed pressure plate; 21. Rotary joint; 22. Limiting rail; 23. Translation base; 24. Nut seat; 25. Threaded support; 26. Threaded rod; 27. Servo motor; 28. Shifting motor; 29. ​​Lower mold body; 30. Water-cooled mold; 31. Rotating shaft; 32. Through-hole synchronous wheel; 33. Shaft locking device; 34. Rotating seat. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-6 This utility model provides a technical solution: a double roller welding machine, including a square tube base 1, a frame 2 fixedly connected to one side of the upper end of the square tube base 1, a guide rod bracket 3 fixedly connected to the other side of the upper end of the square tube base 1, guide rod supports 10 fixedly connected to both sides of the upper end of the guide rod support 3, a connecting plate seat 11 fixedly connected to the outer side of the guide rod support 10, sliding base plates 12 slidably arranged at both ends of the connecting plate seat 11, a plug screw 14 fixedly connected to one side of the sliding base plate 12, adjusting handles 13 rotatably connected to both ends of the guide rod support 10, the adjusting handles 13 and the plug screws 14 threadedly connected, a cylinder body 15 fixedly connected to one end of the sliding base plates 12 on both sides, an upper mold device 16 fixedly connected to the lower end of the cylinder body 15, a moving device 4 fixedly connected to the upper end of the frame 2, a lower mold rotating device 5 fixedly connected to one side of the upper end of the moving device 4, a shifting motor 28 fixedly connected to the other side of the upper end of the moving device 4, the shifting motor 28 and the lower mold rotating device 5 are connected by belt drive.

[0022] In this embodiment, during welding, the product is fixed to the upper end of the lower mold rotating device 5. The moving device 4 then moves the lower mold rotating device 5 to the lower end of the upper mold device 16. The cylinder body 15 then presses the upper mold device 16 down to the set welding length, completing one welding operation. The upper mold device 16 then rises under the influence of the cylinder body 15, and the lower mold rotating device 5 rotates the product to the set angle. After reaching the set angle, the cylinder body 15 again presses the upper mold device 16 down to the set welding length for a second welding operation. This process can be repeated multiple times at different angles. After welding, the cylinder body 15 raises the upper mold device 16, and the moving device 4 moves the lower mold rotating device 5 to the welding start position for product loading and unloading. This design avoids operating below the welding rollers, making it safer. This design facilitates product loading and unloading and quickly moves the product to the welding position. It allows for automatic completion of multiple weld passes with a single start-up, significantly improving welding efficiency compared to traditional manual start-stop methods.

[0023] Specifically, the guide rod bracket 3 includes a top plate 6, a guide rod 7, a photoelectric switch 8, and a fixing base plate 9. The guide rod 7 is fixedly connected to the four corners of the lower end of the top plate 6. The photoelectric switch 8 is fixedly connected to one side of the surface of the guide rod 7. The fixing base plate 9 is fixedly connected to the lower end of the guide rod 7.

[0024] In this embodiment, the fixed base plate 9 facilitates the overall fixing of the guide rod bracket 3.

[0025] Specifically, the upper mold device 16 includes a seated bearing 17, a rotating rod 18, a welding roller 19, a fixed pressure plate 20, and a rotary joint 21. There are two seated bearings 17. The rotating rod 18 is rotatably connected to the center of the seated bearing 17. The welding roller 19 is sleeved at one end of the rotating rod 18. The welding roller 19 is fixed by the fixed pressure plate 20. The other end of the rotating rod 18 is fixedly connected to the rotary joint 21.

[0026] In this embodiment, by sleeved on the center of the bearing 17, the rotating rod 18 can be rotated. The rotating joint 21 can be connected to an external rotating component to drive the rotating rod 18 to rotate. The other end of the rotating rod 18 is fixedly connected to a welding roller 19 through a fixed pressure plate 20. After the rotating rod 18 rotates, it can be used for rolling welding.

[0027] Specifically, the moving device 4 includes a limiting rail 22, a translation base 23, a nut seat 24, a threaded support 25, a threaded rod 26, and a servo motor 27. The limiting rail 22 is fixedly connected to both sides of the upper end of the square tube base 1, and the translation base 23 is slidably sleeved on the surface of the limiting rail 22.

[0028] In this embodiment, the limiting track 22 limits the translation base 23 to only slide.

[0029] Specifically, threaded supports 25 are fixedly connected to both ends of one side of the upper end of the square tube base 1, and a threaded rod 26 is rotatably connected between the two threaded supports 25. One end of the threaded rod 26 is fixedly connected to a servo motor 27 via a shaft. The servo motor 27 is fixedly connected to the upper end of the square tube base 1. A nut seat 24 is fixedly connected to one side of the translation base 23. The nut seat 24 is threaded onto the outer surface of the threaded rod 26.

[0030] In this embodiment, the servo motor 27 can be driven to rotate when the internal power is turned on, thereby driving the threaded rod 26 to rotate. After the threaded rod 26 rotates, it can rotate with the nut seat 24. Since the nut seat 24 is fixed on the surface of the translation base 23 and the translation base 23 can only translate, the rotation of the nut seat 24 can drive the translation base 23 to translate, thereby enabling movement.

[0031] Specifically, the lower mold rotation device 5 includes a lower mold body 29, a water-cooled mold 30, a rotating shaft 31, a through-hole synchronous wheel 32, a shaft locking device 33, and a rotating seat 34. The rotating shaft 31 is rotatably connected to the center of the rotating seat 34. The shaft locking device 33 is fixedly connected to the lower end of the rotating shaft 31. The through-hole synchronous wheel 32 is fixedly connected to the upper end of the shaft locking device 33. The lower mold body 29 is fixedly connected to the upper end of the rotating shaft 31. The water-cooled mold 30 is fixedly installed at the lower end of the lower mold body 29.

[0032] In this embodiment, the through-hole synchronous pulley 32 can be belt-driven to the shifting motor 28. When the shifting motor 28 is powered on, it can drive the through-hole synchronous pulley 32 to rotate, thereby driving the rotating shaft 31 to rotate. The product is fixedly placed on the upper end of the lower mold body 29. After the rotating shaft 31 rotates, it can drive the product to rotate and change position, which is more convenient. In use, after the product is fixed on the upper end of the lower mold body 29, the control switch of the servo motor 27 is turned on, so that the translation base 23 can be threaded to transport the product to the welding position. At this time, the cylinder body 1 is used to transport the product to the welding position. After the upper mold device 16 is lowered to the welding position, the product can be welded by the fixed pressure plate 20. After the single-sided welding is completed, the upper mold device 16 drives the fixed pressure plate 20 to rise. At this time, the set shifting motor 28 drives the through hole synchronous wheel 32 to rotate, so that the product can be rotated and shifted without manual shifting, which is more convenient. After the shifting is completed, the cylinder body 15 drives the upper mold device 16 to descend again for secondary welding. This process can be repeated to complete single-channel multi-sided welding. After the welding is completed, the servo motor 27 drives the translation base 23 to move outward, which can pick up and put down the product, making it safer.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-roller welding machine, comprising a square tube base (1), characterized in that: A frame (2) is fixedly connected to one side of the upper end of the square tube base (1), and a guide rod bracket (3) is fixedly connected to the other side of the upper end of the square tube base (1). Guide rod supports (10) are fixedly connected to both sides of the upper end of the guide rod bracket (3). A connecting plate seat (11) is fixedly connected to the outer side of the guide rod support (10). A sliding base plate (12) is slidably provided at both ends of the connecting plate seat (11). A plug screw (14) is fixedly connected to one side of the sliding base plate (12). An adjusting handle (13) is rotatably connected to both ends of the guide rod support (10). The adjusting handle (13) is threadedly connected to the plug screw (14). A cylinder body (15) is fixedly connected to one end of the sliding base plate (12) on both sides. An upper mold device (16) is fixedly connected to the lower end of the cylinder body (15). A moving device (4) is fixedly connected to the upper end of the frame (2). A lower mold rotating device (5) is fixedly connected to one side of the upper end of the moving device (4). A shifting motor (28) is fixedly connected to the other side of the upper end of the moving device (4). The shifting motor (28) and the lower mold rotating device (5) are connected by belt drive.

2. The double-roller welding machine according to claim 1, characterized in that: The guide rod bracket (3) includes a top plate (6), a guide rod (7), a photoelectric switch (8) and a fixed base plate (9). The guide rod (7) is fixedly connected to the four corners of the lower end of the top plate (6). The photoelectric switch (8) is fixedly connected to one side of the surface of the guide rod (7). The fixed base plate (9) is fixedly connected to the lower end of the guide rod (7).

3. The double-roller welding machine according to claim 1, characterized in that: The upper mold device (16) includes a seated bearing (17), a rotating rod (18), a welding roller (19), a fixed pressure plate (20), and a rotary joint (21). There are two seated bearings (17). The rotating rod (18) is rotatably connected to the center of the seated bearing (17). The welding roller (19) is sleeved at one end of the rotating rod (18). The welding roller (19) is fixed by the fixed pressure plate (20). The other end of the rotating rod (18) is fixedly connected to the rotary joint (21).

4. The double-roller welding machine according to claim 1, characterized in that: The moving device (4) includes a limiting rail (22), a translation base (23), a nut seat (24), a threaded support (25), a threaded rod (26), and a servo motor (27). The limiting rail (22) is fixedly connected to both sides of the upper end of the square tube base (1), and the translation base (23) is slidably sleeved on the surface of the limiting rail (22).

5. The double-roller welding machine according to claim 4, characterized in that: The upper end of the square tube base (1) is fixedly connected to two threaded supports (25) at both ends, and a threaded rod (26) is rotatably connected between the two threaded supports (25). One end of the threaded rod (26) is fixedly connected to a servo motor (27) via a shaft. The servo motor (27) is fixedly connected to the upper end of the square tube base (1). A nut seat (24) is fixedly connected to one side of the translation base (23), and the nut seat (24) is threaded onto the outer surface of the threaded rod (26).

6. The double-roller welding machine according to claim 4, characterized in that: The lower mold rotating device (5) includes a lower mold body (29), a water-cooled mold (30), a rotating shaft (31), a through-hole synchronous wheel (32), a shaft lock (33), and a rotating seat (34). The rotating seat (34) is rotatably connected to the rotating shaft (31). The lower end of the rotating shaft (31) is fixedly connected to the shaft lock (33). The upper end of the shaft lock (33) is fixedly connected to the through-hole synchronous wheel (32). The upper end of the rotating shaft (31) is fixedly connected to the lower mold body (29). The lower end of the lower mold body (29) is fixedly provided with the water-cooled mold (30).

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