Feeding mechanism for welding large round iron sheet oil drum

Abstract

The utility model discloses a feeding mechanism for welding a large round iron sheet oil drum, and relates to the field of oil drum welding, the feeding mechanism comprises welding equipment, the welding equipment comprises a feeding plate rolling mechanism mounted on a base, and the feeding plate rolling mechanism comprises side plates symmetrically and fixedly arranged at the left end and the right end of the base; fixing assemblies used for fixing the upper pressing roller between the two mounting rings are arranged in the two mounting rings, each fixing assembly comprises a friction block which is movably arranged in the corresponding mounting ring, the arc-shaped inner surface of each friction block abuts against the surface of the upper pressing roller, and a right triangle groove is formed in the center of one end of each friction block; and the position, corresponding to the right-angled triangular groove, of the side face of the mounting ring is in threaded connection with a threaded rod with the inner end penetrating through the side wall of the mounting ring in a threaded mode and extending into the right-angled triangular groove. According to the device, the fixing assembly is arranged, so that the upper pressing roller is mounted, and the upper pressing roller is convenient and fast to mount and dismount.

Description

Technical Field

[0001] This application relates to the field of oil drum welding, and in particular to a feeding mechanism for welding large circular sheet metal oil drums. Background Technology

[0002] Currently, oil drums are containers used for storing and transporting liquids (usually petroleum and its derivatives), typically made of metal (such as steel) or plastic. They are generally cylindrical in shape, closed at both ends, and equipped with a lid or stopper for filling and emptying. Oil drum welding refers to the process of welding metal oil drums. Welding is commonly used to join metal parts, forming them into a single, integrated structure.

[0003] For example, Chinese patent CN118060906A discloses a welding device for a large circular iron oil drum, but it still has the following shortcomings in practical use:

[0004] When the sheet metal cylinder is removed after welding, the first adjusting block and the second adjusting block need to be separated. However, the first adjusting block and the second adjusting block are fixed by threads, making disassembly and installation quite cumbersome. Utility Model Content

[0005] To improve the cumbersome process of separating the first and second adjusting blocks, this application provides a feeding mechanism for welding large circular sheet metal oil drums.

[0006] The feeding mechanism for welding large circular sheet metal oil drums provided in this application adopts the following technical solution:

[0007] A feeding mechanism for welding large circular sheet metal oil drums includes a welding device. The welding device includes a feeding coil mechanism mounted on a base. The feeding coil mechanism includes side plates symmetrically fixed at the left and right ends of the base. A mounting block is movably provided in the middle of each of the two side plates. A mounting ring is rotatably mounted in the center of each of the two mounting blocks. An upper pressure roller is provided between the two mounting rings. A fixing component for fixing the upper pressure roller between the two mounting rings is provided inside each of the two mounting rings.

[0008] The fixing component includes a friction block movably disposed within the mounting ring and whose arc-shaped inner surface abuts against the surface of the upper pressure roller. A right-angled triangular groove is formed at the center of one end of the friction block. A threaded rod with its inner end threaded through the side wall of the mounting ring and extending into the right-angled triangular groove is threadedly connected to the side of the mounting ring at the position corresponding to the right-angled triangular groove.

[0009] By adopting the above technical solution, the two ends of the upper pressure roller are located in the through holes on the mounting rings on both sides. By setting the fixing components, the arc-shaped inner surface of the friction block perfectly fits the surface of the upper pressure roller. Thus, the arc-shaped inner surface of the friction block abuts against the surface of the upper pressure roller, generating friction between the friction block and the upper pressure roller. Under the action of friction, the upper pressure roller is fixed in the through hole. When the upper pressure roller rotates, the mounting ring rotates in the through hole with the cooperation of the rotating ring and the rotating groove, and at the same time drives the upper pressure roller to rotate. When it is necessary to disassemble the upper pressure roller, the threaded rod is rotated. The threaded rod applies a thrust to the inclined surface of the right-angled triangular groove, and the friction block receives a component force in the direction away from the upper pressure roller. As a result, the friction block slides in the direction away from the upper pressure roller, and the arc-shaped inner surface of the friction block no longer abuts against the surface of the upper pressure roller. Thus, the upper pressure roller can be pulled out from between the two mounting blocks. The installation and disassembly are simple and quick.

[0010] Preferably, the mounting ring has a through hole in the center of its side surface that matches the shape of the upper pressure roller, and a sliding groove in the inner wall of the through hole that matches the shape of the friction block. The friction block is located in the sliding groove and slides longitudinally. A spring is fixedly connected to the top of the friction block, with its top end fixed to the top of the inner cavity of the sliding groove. The mounting ring has a threaded groove in the side surface that matches the shape of the threaded rod, and the threaded groove communicates with the sliding groove.

[0011] By adopting the above technical solution, the matching design of the slide groove and the friction block can ensure that the friction block remains stable during the movement, avoiding shaking or deviation from the track. At the same time, the matching slide groove and the friction block can reduce the friction area, thereby reducing frictional resistance and making the movement of the friction block more effortless and smooth. Furthermore, when the friction block slides into the slide groove, it will compress the spring. When the force acting on the friction block disappears, the friction block can automatically rebound to its original position under the action of the spring.

[0012] Preferably, a limiting disc is fixedly sleeved on the surface of the threaded rod, and a second sliding groove adapted to the shape of the limiting disc is opened in the mounting ring. The second sliding groove is connected to the threaded groove, and the limiting disc is located in the second sliding groove and can slide laterally.

[0013] By adopting the above technical solution, when the threaded rod rotates clockwise, it moves towards the right-angled triangular groove while rotating, thus applying the thrust force to the inclined surface of the inner cavity of the right-angled triangular groove. The limiting plate and the second slide groove can limit the threaded rod. When the threaded rod drives the limiting plate to the innermost end of the second slide groove, the limiting plate can no longer move, and the threaded rod can no longer move into the right-angled triangular groove. At this time, the arc-shaped inner surface of the friction block no longer abuts against the surface of the upper pressure roller, and there is no friction between them. When the threaded rod rotates counterclockwise, the threaded rod drives the limiting plate to slide away from the right-angled triangular groove. When the threaded rod drives the limiting plate to slide to the outermost end of the second slide groove, the limiting plate can no longer slide, and at this time the friction block is no longer subjected to the force of the threaded rod. Then, the friction block rebounds to its original position under the action of the spring, and the arc-shaped inner surface of the friction block continues to abut against the surface of the upper pressure roller, and there is friction between them.

[0014] Preferably, a hexagonal groove is formed at the center of the outer end of the threaded rod.

[0015] By adopting the above technical solution and opening a hexagonal groove, the threaded rod can be rotated with the help of a hexagonal wrench, eliminating the need to rotate the threaded rod by hand, making the operation simpler and less strenuous.

[0016] Preferably, a rotating ring is fixedly sleeved on the outer circumference of the mounting ring, and a cavity adapted to the shape of the mounting ring is opened on the side of the mounting block. A rotating groove adapted to the shape of the rotating ring is opened on the inner wall of the cavity, and the mounting ring is located in the rotating groove and can rotate.

[0017] By adopting the above technical solution, the matching design between the rotating groove and the rotating ring can ensure that the rotating ring remains stable during rotation, avoiding shaking or deviation from the track.

[0018] Preferably, a cavity two adapted to the shape of the mounting block is provided in the center of the side of the side plate, and the mounting block is located in the cavity two and can slide longitudinally.

[0019] By adopting the above technical solution, the matching design between cavity two and mounting block can ensure that the mounting block remains stable during movement, avoiding shaking or deviation from the track. At the same time, the matching cavity two and mounting block can reduce the friction area, thereby reducing frictional resistance and making the movement of the friction block more effortless and smooth.

[0020] Preferably, two cavities three are symmetrically opened on the side of the side plate on both sides of the cavity two. The mounting block has a sliding plate fixedly connected to the left and right sides of the side plate through the ear plate. The sliding plate is located in the cavity three and can slide longitudinally. The side plate has a sliding groove three that matches the shape of the ear plate. The sliding groove three is connected to the cavity two and the cavity three. The ear plate is located in the sliding groove three and can slide longitudinally. The sliding plate is located in the cavity three. An electric push rod with an output shaft fixed to the top of the sliding plate is fixed to the top of the cavity three.

[0021] By adopting the above technical solution, the electric actuator can drive the mounting block to slide up and down in the cavity, thereby adjusting the distance between the upper and lower pressure rollers. This allows the bending degree of the sheet metal to be adjusted when it passes between the lower and upper pressure rollers, thus improving the ease of bending the sheet metal.

[0022] Preferably, two lower pressure rollers are rotatably arranged between the two side plates, and the lower pressure rollers are spaced apart from the upper pressure rollers.

[0023] By adopting the above technical solution, the upper pressure roller is located between the two lower pressure rollers, and the upper pressure roller and the two lower pressure rollers are triangularly distributed on the side plate. The sheet metal passes through the two lower pressure rollers and the upper pressure roller. At this time, the upper pressure roller presses against the sheet metal, and the two lower pressure rollers support the sheet metal. During the bending process of the sheet metal, the pressure of the sheet metal acts on the lower pressure rollers.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The upper pressure roller is fixed between two mounting rings by setting a fixing component. The upper pressure roller is driven to rotate by the rotation of the two mounting rings in the through hole. When the welded iron sheet needs to be removed, the upper pressure roller needs to be removed. The threaded rod is rotated clockwise. The bottom end of the threaded rod abuts against the inclined surface of the right-angled triangular groove. The threaded rod then applies a thrust to the inclined surface of the right-angled triangular groove. As a result, the friction block receives a component force in the direction away from the upper pressure roller. The friction block then slides away from the upper pressure roller, and the arc-shaped inner surface of the friction block no longer abuts against the surface of the upper pressure roller. Thus, the upper pressure roller can be pulled out from between the two mounting blocks. Disassembly is simple and quick.

[0026] 2. When it is necessary to reinstall the upper pressure roller, rotate the threaded rod counterclockwise. The threaded rod moves away from the right-angled triangular groove. The bottom of the threaded rod no longer abuts against the inner wall of the right-angled triangular groove. As a result, the thrust of the threaded rod on the inclined surface of the right-angled triangular groove disappears, and the friction block is no longer under force. Under the action of the spring, it springs back to its original position. The arc-shaped inner surface of the friction block continues to abut against the surface of the upper pressure roller, and there is friction between them. This fixes the upper pressure roller in the through hole of the mounting block, completing the installation of the upper pressure roller. The installation is simple and quick. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this application;

[0028] Figure 2 This is a schematic diagram of the feeding coil assembly structure of this application;

[0029] Figure 3 This is a schematic diagram of the fixed component structure of this application;

[0030] Figure 4 This is a left view of the cross-sectional structure of the fixed component in this application;

[0031] Figure 5 This is a schematic diagram of the mounting ring and mounting block structure of this application;

[0032] Figure 6 This is the left view of the cross-sectional structure of the mounting ring in this application.

[0033] Reference numerals: 1. Base; 2. Welding equipment;

[0034] 4. Feeding coil mechanism; 41. Side plate; 42. Cavity II; 43. Mounting block; 44. Mounting ring; 45. Upper pressure roller; 46. Rotating ring; 47. Rotary groove;

[0035] 48. Fixing component; 481. Friction block; 482. Slide groove one; 483. Spring; 484. Right-angled triangular groove; 485. Threaded rod; 486. Limiting plate; 487. Slide groove two; 488. Hexagonal groove; 489. Threaded groove;

[0036] 49. Through hole; 410. Lower pressure roller; 411. Cavity three; 412. Electric actuator; 413. Slide plate; 414. Ear plate; 415. Slide groove three; 416. Cavity one; 417. Driven gear; 418. Drive gear; 419. Drive motor; 420. Mounting bracket. Detailed Implementation

[0037] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0038] This application discloses a feeding mechanism for welding large circular sheet metal oil drums.

[0039] Reference Figure 1 , Figure 2 , Figure 5 A feeding mechanism for welding large circular iron sheet oil drums includes a welding device 2 (the device in the Chinese patent authorization announcement number CN118060906A, the specific working principle of which will not be described in detail). The welding device 2 includes a feeding coil mechanism 4 installed on a base 1. The feeding coil mechanism 4 includes side plates 41 symmetrically fixed at the left and right ends of the base 1. A cavity 42 is opened in the middle part of the side of each of the two side plates 41. Two mounting blocks 43 are located in the cavities 42 on both sides respectively. The four sides of the mounting blocks 43 abut against the inner walls of the cavities 42 to avoid misalignment. The height of the cavity 42 is greater than the height of the mounting blocks 43 so that the mounting blocks 43 can slide longitudinally in the cavity 42.

[0040] Both mounting blocks 43 have cavities 416 in the center of their sides. The mounting ring 44 is located in the cavity 416 and its surface abuts against the inner wall of the cavity 416. The rotating ring 46 is fixedly sleeved on the surface of the mounting ring 44. The rotating groove 47 is opened in the inner wall of the cavity 416. The mounting ring 44 is located in the rotating groove 47 through the rotating ring 46 and is rotatably mounted in the cavity 416. The two sides and the outer circumference of the rotating ring 46 abut against the two sides and the inner circumference of the cavity of the rotating groove 47, respectively. The two mounting rings 44 have through holes 49 in the center of their sides. The upper pressure roller 45 is inserted between the two through holes 49 and its surface abuts against the inner wall of the through hole 49 to avoid misalignment.

[0041] Two lower pressure rollers 410 are rotatably mounted between two side plates 41. The two lower pressure rollers 410 are arranged in parallel intervals. An upper pressure roller 45 is located between the two lower pressure rollers 410, and the upper pressure roller 45 and the two lower pressure rollers 410 are triangularly distributed on the side plate 41. A driven gear 417 is fixedly mounted at one end of each of the two lower pressure rollers 410. A driving gear 418 is arranged between the two driven gears 417. The driving gear 418 is rotatably mounted on the outside of the side plate 41, and the driving gear 418 meshes with the two driven gears 417. A mounting bracket 420 is fixedly connected to the outside of one side plate 41. A drive motor 419 is fixedly mounted on the top of the mounting bracket 420, and the output shaft of the drive motor 419 is connected to the driving gear 418.

[0042] The sheet metal passes between the two lower pressure rollers 410 and the upper pressure roller 45. At this time, the upper pressure roller 45 presses against the sheet metal, while the two lower pressure rollers 410 support the sheet metal. During the bending process of the sheet metal, the pressure of the sheet metal acts on the lower pressure rollers 410. The drive motor 419 drives the drive gear 418 to rotate, and the drive gear 418 drives the two driven gears 417 to rotate. As the two driven gears 417 rotate, the two lower pressure rollers 410 rotate on the side plate 41.

[0043] A pair of ear plates 414 are fixedly connected to the left and right sides of the mounting block 43. Two cavities 3 411 are symmetrically opened on the left and right sides of the cavity 2 42. The slide groove 3 415, which is connected to the cavity 3 411 on the same side, is opened in the side plate 41. Both slide grooves 3 415 are connected to the cavity 2 42. The two ear plates 414 are located in the slide grooves 3 415 on both sides. The left and right sides of the ear plates 414 abut against the left and right sides of the inner cavity of the slide groove 3 415 to avoid play. The height of the slide groove 3 415 is greater than the height of the ear plates 414, so that the ear plates 414 can slide longitudinally in the slide groove 3 415. The end of the ear plate 414 away from the mounting block 43 is fixedly connected to the slide plate 413. The slide plate 413 is located in the cavity 3 411. The electric push rod 412 is fixedly installed on the top of the inner cavity of the cavity 3 411. The electric push rod 412 is vertically set. The piston rod of the electric push rod 412 is fixedly connected to the center of the top of the slide plate 413.

[0044] The electric actuator 412 adjusts the distance between the upper pressure roller 45 and the lower pressure roller 410, so that the bending degree of the sheet metal can be adjusted when it passes between the lower pressure roller 410 and the upper pressure roller 45, thereby improving the ease of bending the sheet metal.

[0045] Reference Figure 3 , Figure 4 , Figure 6 Each of the two mounting rings 44 is fixedly fitted with a fixing component 48, which is used to fix the upper pressure roller 45 between the two mounting rings 44. The fixing component 48 includes a friction block 481 that is movably disposed within the mounting ring 44 and whose arc-shaped inner surface abuts against the surface of the upper pressure roller 45. A sliding groove 482 is formed in the inner wall of the through hole 49. The friction block 481 is located in the sliding groove 482 and all four sides of the friction block 481 abut against the inner wall of the inner cavity of the sliding groove 482 to avoid false pressure. The height of the slide groove 482 is greater than the height of the friction block 481, allowing the friction block 481 to slide longitudinally within the slide groove 482. The arc-shaped side of the friction block 481 near the upper pressure roller 45 is completely fitted with the surface of the upper pressure roller 45. The arc-shaped surface of the friction block 481 near the upper pressure roller 45 abuts against the surface of the upper pressure roller 45. A spring 483 is fixedly connected to the center of the top of the friction block 481, and the end of the spring 483 away from the friction block 481 is fixedly connected to the top of the inner cavity of the slide groove 482.

[0046] A right-angled triangular groove 484 is formed at the center of one end of the friction block 481. A threaded groove 489 is formed on the side of the mounting ring 44 at the position corresponding to the right-angled triangular groove 484. A threaded rod 485 is threadedly connected to the threaded groove 489, and the threaded groove 489 and the threaded rod 485 are adapted to each other. The inner end of the threaded rod 485 extends into the right-angled triangular groove 484, and the outer end of the threaded rod 485 is flush with the side of the mounting ring 44. A hexagonal groove 488 is formed at the center of the outer end of the threaded rod 485.

[0047] The limiting plate 486 is fixedly sleeved on the surface of the threaded rod 485. The inner wall of the threaded groove 489 is provided with a second sliding groove 487. The limiting plate 486 is located in the second sliding groove 487 and the circumferential surface of the limiting plate 486 abuts against the inner wall of the second sliding groove 487. The lateral depth of the second sliding groove 487 is greater than the height of the limiting plate 486, so that the limiting plate 486 can slide laterally in the second sliding groove 487.

[0048] When the upper pressure roller 45 needs to be fixedly connected between the two through holes 49, use a hexagonal plate to rotate the threaded rod 485 clockwise. The threaded rod 485 moves into the right-angled triangular groove 484 while rotating. When the threaded rod 485 drives the limiting plate 486 to slide to the innermost end in the second slide groove 487, the limiting plate 486 is limited, and the rotation of the threaded rod 485 stops. At this time, the inner end of the threaded rod 485 abuts against the inclined surface of the inner cavity of the right-angled triangular groove 484 and applies a thrust to the inclined surface of the inner cavity of the right-angled triangular groove 484. Through the decomposition of forces, it can be seen that the friction block 481 is subjected to a component force in the direction of the first slide groove 482. As a result, the friction block 481 slides into the first slide groove 482 and compresses the spring 483. Then the arc surface of the friction block 481 does not abut against the surface of the upper pressure roller 45. There is no friction between the friction block 481 and the upper pressure roller 45, so that the upper pressure roller 45 can be inserted between the two through holes 49.

[0049] After installation, use the hexagonal plate to rotate the threaded rod 485 counterclockwise. As the threaded rod 485 rotates, it moves away from the right-angled triangular groove 484. When the threaded rod 485 drives the limiting plate 486 to slide to its outermost end within the second slide groove 487, the limiting plate 486 is stopped, thus stopping the rotation of the threaded rod 485 and preventing it from rotating entirely out of the threaded groove 489. At this point, the inner end of the threaded rod 485 no longer abuts against the inclined surface of the right-angled triangular groove 484, and instead acts on the inclined surface of the right-angled triangular groove 484. When the thrust disappears, the friction block 481 is no longer under force, and then the friction block 481 rebounds to its original position under the action of the spring 483. The arc surface of the friction block 481 continues to abut against the surface of the upper pressure roller 45. There is friction between the friction block 481 and the upper pressure roller 45. Under the action of friction, the upper pressure roller 45 cannot move in the through hole 49. As a result, the upper pressure roller 45 is fixedly connected between the two mounting rings 44, and does not hinder the rotation of the upper pressure roller 45. The two mounting rings 44 rotate in the cavity 416, thereby driving the upper pressure roller 45 to rotate.

[0050] After the oil drum is welded, the upper pressure roller 45 needs to be removed in order to remove the iron tube. Following the same principle, the threaded rod 485 is rotated clockwise to pull out the upper pressure roller 45. The support roller also needs to be removed in welding equipment 2. The installation method of the support roller is the same as that of the upper pressure roller 45, and the installation and removal are also the same. It will not be explained in detail here. After the upper pressure roller 45 and the support roller are removed, the iron tube can be removed along the axis of the upper pressure roller 45 and the support roller. Then, the upper pressure roller 45 and the support roller can be installed according to the above steps.

[0051] The electric actuator 412 and the drive motor 419 are both existing technologies, and their structural principles will not be described in detail. In addition, the device also contains a microcontroller, microprocessor, control system and other structures, which are not the main technologies and will not be described in detail.

[0052] The implementation principle of a feeding mechanism for welding large circular sheet metal oil drums according to an embodiment of this application is as follows: A flat sheet of iron is passed between the lower pressure roller 410 and the upper pressure roller 45. Then, the electric actuator 412 presses the upper pressure roller 45 against the iron sheet. Next, one end of the iron sheet is passed between the positioning roller and the support roller. As the drive motor 419 drives the drive gear 418 to rotate, the two lower pressure rollers 410 rotate. During the rotation of the lower pressure rollers 410, the iron sheet is driven to pass between the lower pressure roller 410 and the upper pressure roller 45. After the iron sheet is bent into a cylindrical shape, the welding equipment 2 completes the welding of the cylinder.

[0053] Rotating the threaded rod 485 clockwise causes it to move towards the right-angled triangular groove 484. The inner end of the threaded rod 485 abuts against the inclined surface of the inner cavity of the right-angled triangular groove 484, applying a thrust to the inclined surface of the inner cavity. Through force decomposition, it can be seen that the friction block 481 experiences a component force in the direction of the slide groove 482. Consequently, the friction block 481 slides towards the slide groove 482 while simultaneously compressing the spring 483. Therefore, the arc-shaped surface of the friction block 481 does not contact the surface of the upper pressure roller 45. The friction block 481 and the upper... There is no friction between the pressure rollers 45, so the upper pressure roller 45 can be pulled out. In welding equipment 2, the support roller also needs to be disassembled. The installation method of the support roller is the same as that of the upper pressure roller 45, and the installation and disassembly are also the same, so it will not be explained in detail here. After the upper pressure roller 45 and the support roller are removed, the iron tube can be removed along the axial direction of the upper pressure roller 45 and the support roller. Then, the upper pressure roller 45 and the support roller can be installed according to the above steps, so that the upper pressure roller 45 and the support roller can be removed. Finally, the iron tube can be removed along the axial direction of the upper pressure roller 45 and the support roller.

[0054] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A feeding mechanism for welding large round sheet iron oil drums, comprising a welding device (2), said welding device (2) comprising a feeding roll mechanism (4) mounted on a base (1), said feeding roll mechanism (4) comprising side plates (41) symmetrically fixed on the left and right ends of the base (1), characterized in that: Two installation blocks (43) are movably arranged at the middle parts of the two side plates (41), two installation rings (44) are rotatably arranged at the centers of the two installation blocks (43), an upper compression roller (45) is arranged between the two installation rings (44), and a fixing assembly (48) for fixing the upper compression roller (45) between the two installation rings (44) is arranged in the two installation rings (44). The fixing assembly (48) comprises a friction block (481) movably arranged in the installation ring (44) and abutting against the surface of the upper compression roller (45) through the arc-shaped inner surface, a right-angled triangular recess (484) is arranged at the center of one end of the friction block (481), and a threaded rod (485) penetrating through the side wall of the installation ring (44) and extending into the right-angled triangular recess (484) is threadedly connected to the position corresponding to the right-angled triangular recess (484) on the side surface of the installation ring (44).

2. A feeding mechanism for welding large round sheet iron oil drums as claimed in claim 1, characterized in that: A through hole (49) matching the shape of the upper compression roller (45) is arranged at the center of the side surface of the installation ring (44), a sliding groove one (482) matching the shape of the friction block (481) is arranged on the inner wall of the through hole (49), the friction block (481) is located in the sliding groove one (482) and realizes longitudinal sliding, a spring (483) is fixedly connected to the top of the friction block (481) and fixedly connected to the top inner cavity of the sliding groove one (482), and a threaded groove (489) matching the shape of the threaded rod (485) is arranged on the side surface of the installation ring (44), and the threaded groove (489) is in communication with the sliding groove one (482).

3. A feeding mechanism for welding large round sheet iron oil drums as claimed in claim 2, characterized in that: A limiting disc (486) is fixedly arranged on the surface of the threaded rod (485), a sliding groove two (487) matching the shape of the limiting disc (486) is arranged in the installation ring (44), the sliding groove two (487) is in communication with the threaded groove (489), and the limiting disc (486) is located in the sliding groove two (487) and realizes transverse sliding.

4. A feed mechanism for welding large round sheet iron drums as defined in claim 3, wherein: A hexagonal groove (488) is arranged at the center of the outer end of the threaded rod (485).

5. A feed mechanism for welding large round sheet iron oil drums as claimed in claim 4, wherein: A rotating ring (46) is fixedly arranged on the circumferential outer surface of the installation ring (44), a cavity one (416) matching the shape of the installation ring (44) is arranged on the side surface of the installation block (43), a rotating groove (47) matching the shape of the rotating ring (46) is arranged on the inner wall of the cavity one (416), and the installation ring (44) is located in the rotating groove (47) and realizes rotation.

6. A feed mechanism for welding large round sheet iron drums as defined in claim 1, wherein: A cavity two (42) matching the shape of the installation block (43) is arranged at the center of the side surface of the side plate (41), and the installation block (43) is located in the cavity two (42) and realizes longitudinal sliding.

7. A feed mechanism for welding large round sheet iron drums as defined in claim 6, wherein: The side plate (41) is symmetrically provided with two cavity threes (411) on both sides of the cavity two (42), the mounting block (43) is fixedly connected with a sliding plate (413) on the left and right sides through an ear plate (414), the sliding plate (413) is located in the cavity three (411) and realizes longitudinal sliding, a sliding groove three (415) that is matched with the shape of the ear plate (414) is formed in the inside of the side plate (41), the sliding groove three (415) is communicated with the cavity two (42) and the cavity three (411), the ear plate (414) is located in the sliding groove three (415) and realizes longitudinal sliding, the sliding plate (413) is located in the cavity three (411), and the cavity three (411) is internally fixedly connected with an output shaft, and the electric push rod (412) fixedly connected on the top of the sliding plate (413).

8. A feed mechanism for welding large round sheet iron drums as defined in claim 7, wherein: Two lower pressing rollers (410) are rotatably arranged between the two side plates (41), and the lower pressing rollers (410) are arranged at intervals from the upper pressing roller (45).

Images